CN210919813U - Joint bearing for main driving assembly of shield tunneling machine and shield tunneling machine - Google Patents
Joint bearing for main driving assembly of shield tunneling machine and shield tunneling machine Download PDFInfo
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- CN210919813U CN210919813U CN201922093423.3U CN201922093423U CN210919813U CN 210919813 U CN210919813 U CN 210919813U CN 201922093423 U CN201922093423 U CN 201922093423U CN 210919813 U CN210919813 U CN 210919813U
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- 230000005641 tunneling Effects 0.000 title claims abstract description 36
- 238000007789 sealing Methods 0.000 claims abstract description 132
- 239000010687 lubricating oil Substances 0.000 claims abstract description 76
- 230000001050 lubricating effect Effects 0.000 claims abstract description 28
- 239000003921 oil Substances 0.000 claims description 184
- 238000003825 pressing Methods 0.000 claims description 24
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 9
- 238000005299 abrasion Methods 0.000 description 10
- 239000000306 component Substances 0.000 description 7
- 239000004519 grease Substances 0.000 description 6
- 238000005553 drilling Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005267 amalgamation Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model relates to the technical field of shield tunneling machines, in particular to a joint bearing for a shield tunneling machine main driving assembly and a shield tunneling machine, wherein the joint bearing comprises an inner ring, a first outer ring, a second outer ring, a first sealing element, a second sealing element, a third sealing element and a fourth sealing element; the first lubricating oil channel is arranged on the first outer ring, the second lubricating oil channel is arranged on the second outer ring, and the third lubricating oil channel is arranged on the inner ring and is communicated with the first and/or second lubricating oil channels. Has the advantages that: the lubricating medium lubricates the space between the inner ring and the first outer ring and the space between the inner ring and the second outer ring, so that the relative rotation between the inner ring and the first outer ring and the relative rotation between the inner ring and the second outer ring are smooth, and the service performance of the joint bearing is improved. In addition, a lubricating medium introduced into the first lubricating oil channel and/or the second lubricating oil channel can enter the third lubricating oil channel to lubricate the inner ring and the active driving assembly, so that the relative rotation and the forward and backward movement between the inner ring and the active driving assembly are ensured to be smooth, and the service performance of the joint bearing and the shield tunneling machine is improved.
Description
Technical Field
The utility model relates to a shield constructs quick-witted technical field, concretely relates to shield constructs owner joint bearing and shield constructs machine for drive assembly.
Background
The main drive assembly is the core component of the shield machine, and is mounted in the cavity of the shield body, and is generally rigidly connected with the shield body. The front end of the main driving component is connected with the cutter head, the rear end of the main driving component is connected with the propelling hydraulic cylinder, and the front end surface and the outer diameter of the cutter head are provided with hobs. The main driving component realizes a rotating function under the driving of the pinion and realizes a forward moving function together with the shield body under the propelling action of the hydraulic cylinder. Due to the need to change the hob and adjust the direction of the line during the excavation, the main drive assembly is required to have a certain swing angle in the shield body, which is usually achieved by providing a knuckle bearing between the shield body and the main drive assembly.
The utility model discloses a chinese utility model patent that bulletin number is CN208486881U discloses a shield constructs sealed urgent prosthetic devices of quick-witted spherical hinge with swing function, including the spherical hinge sealing member, interior spherical hinge (being the inner circle), outer spherical hinge (including first outer lane and second outer lane), preceding shield centre ring (being the shield body), urgent sealing member, fastener and clamp plate, wherein joint bearing is constituteed with first outer lane and second outer lane to the inner circle, between inner circle and the first outer lane, through the sphere cooperation between inner circle and the second outer lane, the spherical hinge sealing member is established between inner circle and first outer lane. The shield body is established in the outside of first outer lane and second outer lane, the shield body and first outer lane fixed connection, and emergency seal establishes between inner circle, second outer lane and the shield body, and the clamp plate passes through the fastener to be fixed on the rear end face of the shield body, and the clamp plate contacts with emergency seal, can adjust emergency seal's compressive capacity. In addition, a main driving assembly of the shield machine is matched with the inner ring, can rotate and move back and forth relative to the inner ring, and can swing relative to the shield body.
For the emergency repairing device for the spherical hinge seal of the shield machine, because the inner ring and the first outer ring and the second outer ring rotate relatively, and the inner ring and the main driving assembly rotate relatively and move back and forth, enough lubrication is required between the inner ring and the first outer ring and between the inner ring and the main driving assembly, otherwise, the service performance of the joint bearing and the shield machine is affected, however, the conventional joint bearing does not have the function.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a joint bearing for a main driving component of a shield machine, which has better service performance; an object of the utility model is also to provide a better shield of performance constructs machine.
In order to achieve the above object, the utility model provides a shield constructs owner joint bearing for drive assembly adopts following technical scheme:
shield constructs owner joint bearing for drive assembly includes:
the inner ring is provided with an outer spherical surface and a matching hole which is used for being in clearance fit with an active driving assembly of the shield tunneling machine, and the axis of the matching hole extends along the front-back direction;
the first outer ring is arranged outside the inner ring and is provided with a first inner spherical surface matched with the outer spherical surface;
the second outer ring is fixedly connected with the first outer ring and arranged outside the inner ring, and the second outer ring is provided with a second inner spherical surface matched with the outer spherical surface;
a first seal disposed between the inner race and the first outer race;
a second seal disposed between the inner race and the second outer race;
the shield constructs owner and drives joint bearing for the subassembly and still includes:
the third sealing element is arranged at the front end of the matching hole of the inner ring and is used for being in sealing contact with the driving component;
the fourth sealing element is arranged at the rear end of the matching hole of the inner ring and is used for being in sealing contact with the driving component;
the first lubricating oil channel is arranged on the first outer ring and provided with a first oil outlet facing the outer spherical surface;
the second lubricating oil channel is arranged on the second outer ring and provided with a second oil outlet facing the outer spherical surface, and the second oil outlet and the first oil outlet are positioned in a sealing area formed by the first sealing element and the second sealing element so as to lubricate the space between the inner ring and the first outer ring and the space between the inner ring and the second outer ring by using a lubricating medium;
and the third lubricating oil channel is arranged on the inner ring, is communicated with the first oil outlet and/or the second oil outlet, is provided with a third oil outlet used for facing the active driving assembly, and is positioned between the third sealing element and the fourth sealing element so as to lubricate the position between the inner ring and the active driving assembly by using a lubricating medium.
The beneficial effects of the above technical scheme are that: set up first lubricated oil duct on first outer lane, set up second lubricated oil duct on second outer lane, they all have the oil-out towards inner circle ectosphere, and two oil-outs are located the sealed area that first sealing member and second sealing member enclose, like this after letting in lubricating medium, just can utilize lubricating medium to between inner circle and the first outer lane, lubricate between inner circle and the second outer lane, guarantee that the relative rotation between inner circle and first outer lane and the second outer lane can be smooth and easy, and then improve shield structure owner and drive joint bearing's for the subassembly performance.
In addition, a third lubricating oil channel is arranged on the inner ring and is communicated with the first oil outlet and/or the second oil outlet, so that a lubricating medium introduced into the first lubricating oil channel and/or the second lubricating oil channel can enter the third lubricating oil channel, the third lubricating oil channel is provided with a third oil outlet used for facing the active driving assembly, and the third oil outlet is positioned between the third sealing element and the fourth sealing element, so that the lubricating medium can be utilized for lubricating the inner ring and the active driving assembly, the relative rotation and the forward and backward movement between the inner ring and the main driving assembly can be ensured to be smooth, and the service performance of the joint bearing and the shield tunneling machine can be further improved.
Further, in order to protect a third sealing element and a fourth sealing element which are easy to wear, the third lubricating oil channel comprises a main oil channel and a branch oil channel communicated with the main oil channel, the main oil channel is communicated with the first oil outlet and/or the second oil outlet, the branch oil channel comprises a first branch oil channel with an oil outlet facing the third sealing element, a second branch oil channel with an oil outlet facing the fourth sealing element, and a third branch oil channel with an oil outlet facing the active driving assembly, and the oil outlet of the third branch oil channel is the third oil outlet.
Furthermore, in order to facilitate the setting and processing of the main oil gallery, the main oil gallery comprises a radial main oil gallery extending along the radial direction of the inner ring and an axial main oil gallery parallel to the axial direction of the inner ring, the axial main oil gallery is communicated with the radial main oil gallery, and the branch oil gallery is communicated with the axial main oil gallery.
Furthermore, in order to reduce friction and abrasion between the inner ring and the main driving assembly, the inner ring comprises an inner ring body and an anti-abrasion sleeve fixed on the inner wall of the inner ring body, an inner hole of the anti-abrasion sleeve forms the matching hole, and the third oil outlet is formed in the anti-abrasion sleeve.
Furthermore, in order to facilitate the communication among the first lubricating oil channel, the second lubricating oil channel and the third lubricating oil channel, an oil storage cavity respectively communicated with the first lubricating oil channel, the second lubricating oil channel and the third lubricating oil channel is arranged at the junction of the inner ring, the first outer ring and the second outer ring.
Furthermore, in order to conveniently adjust the first sealing element after the first sealing element is worn and reduce the wear amount of the first sealing element, the first outer ring is positioned on the front side of the second outer ring, the first outer ring is close to a front-end cutter head of the main driving assembly when the main driving assembly is used, a mounting groove for mounting the first sealing element is formed in the first outer ring, a pressing plate for pressing the first sealing element is arranged in the mounting groove, a bolt is connected to the first outer ring in a threaded manner and used for tightly pressing the pressing plate to adjust the compression amount of the first sealing element; a fourth lubricating oil channel is further arranged on the first outer ring, and an oil outlet of the fourth lubricating oil channel is arranged towards the first sealing element.
Furthermore, in order to adjust the third sealing element after the third sealing element is worn and reduce the wear amount of the third sealing element, the front end of the matching hole of the inner ring is one end, close to a front end cutter head of the main driving assembly, of the inner ring, a mounting groove for mounting the third sealing element is formed in the inner ring, a pressing plate for pressing the third sealing element is arranged in the mounting groove, a bolt is connected to the inner ring in a threaded mode, and the bolt is used for tightly pressing the pressing plate to adjust the compression amount of the third sealing element.
In order to achieve the above object, the utility model provides a shield constructs machine adopts following technical scheme:
shield constructs machine, including shield structure owner drive assembly and shield structure owner joint bearing for drive assembly, shield structure owner drive assembly includes with joint bearing:
the inner ring is provided with an outer spherical surface and a matching hole in clearance fit with the shield machine active driving assembly, and the axis of the matching hole extends along the front-back direction;
the first outer ring is arranged outside the inner ring and is provided with a first inner spherical surface matched with the outer spherical surface;
the second outer ring is fixedly connected with the first outer ring and arranged outside the inner ring, and the second outer ring is provided with a second inner spherical surface matched with the outer spherical surface;
a first seal disposed between the inner race and the first outer race;
a second seal disposed between the inner race and the second outer race;
the shield constructs owner and drives joint bearing for the subassembly and still includes:
the third sealing element is arranged at the front end of the matching hole of the inner ring and is used for being in sealing contact with the shield machine active driving assembly;
the fourth sealing element is arranged at the rear end of the matching hole of the inner ring and is used for being in sealing contact with the shield machine active driving assembly;
the first lubricating oil channel is arranged on the first outer ring and provided with a first oil outlet facing the outer spherical surface;
the second lubricating oil channel is arranged on the second outer ring and provided with a second oil outlet facing the outer spherical surface, and the second oil outlet and the first oil outlet are positioned in a sealing area formed by the first sealing element and the second sealing element so as to lubricate the space between the inner ring and the first outer ring and the space between the inner ring and the second outer ring by using a lubricating medium;
and the third lubricating oil channel is arranged on the inner ring, is communicated with the first oil outlet and/or the second oil outlet, is provided with a third oil outlet used for driving the driving assembly towards the shield tunneling machine, and is positioned between the third sealing element and the fourth sealing element so as to lubricate the inner ring and the shield tunneling machine driving assembly by using a lubricating medium.
The beneficial effects of the above technical scheme are that: set up first lubricated oil duct on first outer lane, set up second lubricated oil duct on second outer lane, they all have the oil-out towards inner circle ectosphere, and two oil-outs are located the sealed area that first sealing member and second sealing member enclose, like this after letting in lubricating medium, just can utilize lubricating medium to between inner circle and the first outer lane, lubricate between inner circle and the second outer lane, guarantee that the relative rotation between inner circle and first outer lane and the second outer lane can be smooth and easy, and then improve shield structure owner and drive joint bearing's for the subassembly performance.
In addition, a third lubricating oil channel is arranged on the inner ring and is communicated with the first oil outlet and/or the second oil outlet, so that a lubricating medium introduced into the first lubricating oil channel and/or the second lubricating oil channel can enter the third lubricating oil channel, the third lubricating oil channel is provided with a third oil outlet used for facing the active driving assembly, and the third oil outlet is positioned between the third sealing element and the fourth sealing element, so that the lubricating medium can be utilized for lubricating the inner ring and the active driving assembly, the relative rotation and the forward and backward movement between the inner ring and the main driving assembly can be ensured to be smooth, and the service performance of the joint bearing and the shield tunneling machine can be further improved.
Further, in order to protect a third sealing element and a fourth sealing element which are easy to wear, the third lubricating oil channel comprises a main oil channel and a branch oil channel communicated with the main oil channel, the main oil channel is communicated with the first oil outlet and/or the second oil outlet, the branch oil channel comprises a first branch oil channel with an oil outlet facing the third sealing element, a second branch oil channel with an oil outlet facing the fourth sealing element, and a third branch oil channel with an oil outlet facing the active driving assembly, and the oil outlet of the third branch oil channel is the third oil outlet.
Furthermore, in order to facilitate the setting and processing of the main oil gallery, the main oil gallery comprises a radial main oil gallery extending along the radial direction of the inner ring and an axial main oil gallery parallel to the axial direction of the inner ring, the axial main oil gallery is communicated with the radial main oil gallery, and the branch oil gallery is communicated with the axial main oil gallery.
Furthermore, in order to reduce friction and abrasion between the inner ring and the main driving assembly, the inner ring comprises an inner ring body and an anti-abrasion sleeve fixed on the inner wall of the inner ring body, an inner hole of the anti-abrasion sleeve forms the matching hole, and the third oil outlet is formed in the anti-abrasion sleeve.
Furthermore, in order to facilitate the communication among the first lubricating oil channel, the second lubricating oil channel and the third lubricating oil channel, an oil storage cavity respectively communicated with the first lubricating oil channel, the second lubricating oil channel and the third lubricating oil channel is arranged at the junction of the inner ring, the first outer ring and the second outer ring.
Furthermore, in order to conveniently adjust the first sealing element after the first sealing element is worn and reduce the wear amount of the first sealing element, the first outer ring is positioned on the front side of the second outer ring, the first outer ring is close to a front-end cutter head of the main driving assembly when the main driving assembly is used, a mounting groove for mounting the first sealing element is formed in the first outer ring, a pressing plate for pressing the first sealing element is arranged in the mounting groove, a bolt is connected to the first outer ring in a threaded manner and used for tightly pressing the pressing plate to adjust the compression amount of the first sealing element; a fourth lubricating oil channel is further arranged on the first outer ring, and an oil outlet of the fourth lubricating oil channel is arranged towards the first sealing element.
Furthermore, in order to adjust the third sealing element after the third sealing element is worn and reduce the wear amount of the third sealing element, the front end of the matching hole of the inner ring is one end, close to a front end cutter head of the main driving assembly, of the inner ring, a mounting groove for mounting the third sealing element is formed in the inner ring, a pressing plate for pressing the third sealing element is arranged in the mounting groove, a bolt is connected to the inner ring in a threaded mode, and the bolt is used for tightly pressing the pressing plate to adjust the compression amount of the third sealing element.
Drawings
Fig. 1 is a structural diagram of a joint bearing of a middle shield tunneling machine of the present invention;
fig. 2 is a schematic view of a partial structure of the middle shield tunneling machine of the present invention.
In the figure: 1. a first outer race; 1-1, fixing holes; 1-2, a fourth lubricating oil channel; 1-3, a groove; 1-4, a first lubricating oil channel; 2. a first puller bolt; 3. a first platen; 4. a first seal member; 5. an inner race body; 5-1, oil outlet; 5-2, a third branch oil gallery main body; 5-3, oil storage chamber; 5-4, a radial main oil gallery; 5-5, an axial main oil gallery; 5-6, a second branch oil duct; 5-7, a first branch oil duct; 6. a second puller bolt; 7. a second platen; 8. a third seal member; 9. fixing the bolt; 10. a second outer race; 10-1. a second lubricating oil channel; 11. a second seal member; 12. a first plug; 13. a fourth seal member; 14. an antifriction sleeve; 15. a connecting screw; 16. a second plug; 17. a shield body; 18. a main drive assembly; 19. a cutter head; o. inner ring spherical center; o is1A first outer race spherical center; o is2A second outer race spherical center; e. eccentricity amount; SR. inner spherical radius; sr. outer spherical surface radius.
Detailed Description
The utility model discloses an embodiment of well shield constructs machine is shown in fig. 2, including main drive assembly 18, the shield body 17, the front end and the blade disc 19 of main drive assembly 18 are connected, are provided with joint bearing between main drive assembly 18 and the shield body 17, and joint bearing's concrete structure is shown in fig. 1.
The knuckle bearing comprises an inner ring, a first outer ring 1 and a second outer ring 10, wherein the inner ring comprises an inner ring body 5 and an antifriction sleeve 14 fixed on the inner wall of the inner ring body 5 through a connecting screw 15, the inner ring body 5 is provided with an outer spherical surface, the spherical center of the inner ring is O, the radius of the outer spherical surface is Sr, and for a large knuckle bearing used on a shield machine, Sr is generally more than 1500 mm.
The inner bore of the wear sleeve 14 forms a mating bore that is a clearance fit with the main drive assembly 18, the axis of the mating bore extending in the fore-aft direction. The material of antifriction sleeve 14 is aluminium bronze to antifriction sleeve 14 is provided with two circles side by side along the fore-and-aft direction, and each circle antifriction sleeve all is formed by the segmental segment amalgamation of a plurality of components of a whole that can function independently.
The first outer race 1 is located forward of the second outer race 10, the first outer race 1 being adjacent an impeller 19 at the forward end of the main drive assembly 18. The first outer ring 1 and the second outer ring 10 are both positioned outside the inner ring, the first outer ring 1 is provided with a first inner spherical surface matched with the outer spherical surface of the inner ring body 5, the radius of the inner spherical surface is SR, and the spherical center of the first outer ring is O1. The second outer ring 10 has a second inner spherical surface adapted to the outer spherical surface of the inner ring body 5, the inner spherical surface also has a radius of SR, and the second outer ring has a spherical center of O2. Generally, SR/Sr = 1-1.2, and in order to improve the service life, the outer spherical surface, the first inner spherical surface and the second inner spherical surface can be subjected to quenching treatment.
The center of the inner ring is O, and the center of the first outer ring is O1The second outer ring has a spherical center of O2The first outer ring spherical center O1 is arranged at the right side of the inner ring spherical center O, and the eccentricity is e; second outer ring spherical center O2On the left side of the spherical center O of the inner ring, the eccentricity is e, after the knuckle bearing is assembled, the inner ring forms a contact angle with the first outer ring 1 and the second outer ring 10, wherein the contact angle is α, and the angle of α is adjusted during design according to the magnitude of the axial force and the radial force applied to the knuckle bearing.
The first outer ring 1 and the second outer ring 10 are fixedly connected through a fixing bolt 9, and a convex-concave spigot structure is designed on the matching surface of the first outer ring and the second outer ring. The first outer ring 1 is provided with a connecting flange connected with the shield body 17, and the connecting flange is provided with a fixing hole 1-1.
As shown in fig. 1, a sealing member mounting groove is provided on a portion of an inner wall of the first outer race 1 near the front end, a first sealing member 4 is provided in the sealing member mounting groove, and the first sealing member 4 is in sealing contact with an outer spherical surface of the inner race body 5, and is used for sealing a gap between the first outer race 1 and the inner race body 5. Still be provided with first clamp plate 3 in the sealing member mounting groove, first clamp plate 3 is located the front side of first sealing member 4, and threaded connection has first puller bolt 2 on the first outer lane 1, and first puller bolt 2 is used for the tight first clamp plate 3 of top in order to adjust the compression capacity of first sealing member 4.
A sealing element mounting groove is also formed in the inner wall of the inner ring body 5 close to the front end, a third sealing element 8 is arranged in the sealing element mounting groove, and the third sealing element 8 is in sealing contact with the main drive assembly 18 and used for sealing a gap between the inner ring body 5 and the main drive assembly 18. Still be provided with second clamp plate 7 in the sealing member mounting groove of inner circle body 5, second clamp plate 7 is located the front side of third sealing member 8, and threaded connection has second puller bolt 6 on the inner circle body 5, and second puller bolt 6 is used for the tight second clamp plate 7 of top in order to adjust the compression capacity of third sealing member 8.
The reason for arranging the first sealing element 4 and the third sealing element 8 in the above manner is that considering that the cutter head 19 is used as the working end of the shield machine, a great amount of soil tries to enter the front end of the knuckle bearing during the tunneling process, and the first sealing element 4 and the third sealing element 8 are close to the front end, so that the abrasion amount is relatively large, and if the first sealing element 4 and the third sealing element 8 cannot be replaced or adjusted in time, the sealing performance is lost.
In addition, a packing attachment groove is also provided in a portion of the inner wall of the second outer ring 10 near the rear end, a second packing 11 is attached in the packing attachment groove, and the second packing 11 is in sealing contact with the outer spherical surface of the inner ring body 5. A seal member mounting groove is also provided on the inner wall of the inner race body 5 near the rear end, a fourth seal member 13 is mounted in the seal member mounting groove, and the fourth seal member 13 is in sealing contact with the main drive unit 18. Since the amount of seal wear near the rear end is relatively small, neither the second seal 11 nor the fourth seal 13 is provided with a pressure plate and an adjusting bolt.
Because the inner ring and the first outer ring 1 and the second outer ring 10 have relative rotation, and the inner ring and the main driving assembly 18 have relative rotation and back-and-forth movement, enough lubrication is needed between the inner ring and the main driving assembly, therefore, the utility model discloses a plurality of first lubricating oil ducts 1-4 which are circumferentially and uniformly distributed are arranged on the first outer ring 1, and the first lubricating oil ducts 1-4 have first oil outlets facing the outer spherical surface of the inner ring body 5; meanwhile, a plurality of second lubricating oil channels 10-1 are uniformly distributed on the second outer ring 10 in the circumferential direction, and the second lubricating oil channels 10-1 are provided with second oil outlets facing the outer spherical surface of the inner ring body 5. The first oil outlet and the second oil outlet are located in a sealing area formed by the first sealing element 4 and the second sealing element 11 in an enclosing mode, so that after the lubricating medium is introduced, the lubricating medium can be used for lubricating the space between the inner ring body 5 and the first outer ring 1 and the space between the inner ring body 5 and the second outer ring 10, the relative rotation between the inner ring body 5 and the first outer ring 1 and the second outer ring 10 can be guaranteed to be smooth, and the use performance of the joint bearing is further improved.
Specifically, a step is arranged at a position, close to the convex-concave spigot structure, of the first outer ring 1, a step is also arranged at a position, close to the convex-concave spigot structure, of the second outer ring 10, the two steps are aligned to form a groove 1-3, and the first lubricating oil passage 1-4 and the second lubricating oil passage 10-1 are respectively arranged on the corresponding steps. In the embodiment, the adopted lubricating medium is lubricating grease, a certain amount of lubricating grease can be stored in the grooves 1-3, and when the shield 17 is used, an oil injection channel communicated with the grooves 1-3 is arranged on the shield body 17 and is externally connected with the lubricating grease with certain engineering pressure.
As shown in fig. 1, oil storage chambers 5-3 respectively communicated with the first oil passage 1-4 and the second oil passage 10-1 are provided at junctions of the inner ring body 5, the first outer ring 1 and the second outer ring 10, the oil storage chambers 5-3 are specifically annular chambers defined by recesses provided on the inner ring body 5, the first outer ring 1 and the second outer ring 10, and grease from the respective first oil passage 1-4 and the second oil passage 10-1 is first collected in the oil storage chambers 5-3.
The inner ring is provided with a plurality of third lubricating oil channels which are communicated with the oil storage cavity 5-3 and are uniformly distributed on the circumference, each third lubricating oil channel comprises a main oil channel and a branch oil channel communicated with the main oil channel, each main oil channel comprises a radial main oil channel 5-4 extending along the radial direction of the inner ring and an axial main oil channel 5-5 parallel to the axial direction of the inner ring, and the radial main oil channels 5-4 are communicated with the axial main oil channels 5-5 and are vertically arranged. The branch oil passages include a first branch oil passage 5-7 with an oil outlet facing the third seal 8, a second branch oil passage 5-6 with an oil outlet facing the fourth seal 13, and a third branch oil passage with an oil outlet facing the active drive assembly 18.
The first branch oil gallery 5-7 and the second branch oil gallery 5-6 are arranged on the inner ring body 5, the third branch oil gallery comprises a third branch oil gallery main body 5-2 arranged in the inner ring body 5 and an oil outlet 5-1 arranged on the anti-wear sleeve 14, and the oil outlet 5-1 corresponds to the third branch oil gallery main body 5-2 one by one. That is, similarly, the third branch oil gallery main body 5-2 has two turns, corresponding to each turn of the wear reducing sleeve 14, and each segment of the specific wear reducing sleeve 14 has the third branch oil gallery main body 5-2 corresponding thereto.
The oil outlet of the third branch oil passage, namely the port of the oil outlet 5-1, is arranged towards the active driving assembly 18 to form a third oil outlet of a third lubricating oil passage, and the third oil outlets are all positioned between the third sealing element 8 and the fourth sealing element 13, so that the inner ring and the active driving assembly 18 can be lubricated by using lubricating grease, the relative rotation and the forward and backward movement between the inner ring and the active driving assembly 18 can be ensured to be smooth, and the service performance of the joint bearing and the shield tunneling machine can be further improved.
In addition, a fourth lubricating oil channel 1-2 is further arranged on the first outer ring 1, and an oil outlet of the fourth lubricating oil channel 1-2 is arranged towards the first sealing element 4. In this way, in the present embodiment, the first seal 4, the third seal 8, and the fourth seal 13 are each provided with a corresponding lubricant passage, so that the effect of preventing the intrusion of foreign matters can be achieved under the effect of the grease under a certain working pressure.
The first branch oil passage 5-7 in this embodiment is shaped like "┫", and during drilling, holes can be drilled in the seal installation grooves of the inner ring body 5 and the third seal 8, and the two parts of the holes are drilled through. The third branch oil gallery main body 5-2 and the second branch oil gallery 5-6 are directly formed by drilling on the inner ring body 5. The axial main oil gallery 5-5 is formed by drilling from the rear end of the inner ring body 5 along the direction parallel to the axial direction of the inner ring, and the radial main oil gallery 5-4 is formed by drilling from the outer side of the inner ring body 5 along the radial direction of the inner ring. The third lubricating oil passage is convenient to process, and when the third lubricating oil passage is used at a later stage, a first plug 12 needs to be arranged at the rear end of the axial main oil passage 5-5, and a second plug 16 needs to be arranged at a port, facing the main driving assembly 18, of the first branch oil passage 5-7.
In addition, the structure of the fourth lubricating oil passage 1-2 is basically the same as that of the first branch oil passage 5-7, and holes are drilled from the sealing element mounting grooves of the first outer ring 1 and the first sealing element 4 respectively, and the holes of the two parts can be drilled through, so that the processing is also convenient.
The utility model discloses well shield constructs joint bearing of machine when using, inner circle and the 18 clearance fit of main drive assembly, main drive assembly 18 can slide around the inner circle is inside. Because the inner ring and the two outer rings are matched by convex-concave spherical surfaces and the inner ring has a swinging function within a range of +/-5 degrees relative to the two outer rings, the main driving assembly 18 can swing within a range of +/-5 degrees relative to the shield body 17, and the requirements of replacing the hob 19 and adjusting the direction of a tunneling line are further met.
In other embodiments of the shield tunneling machine, the wear reducing sleeve may be made of other materials, such as pure copper, tin bronze, etc.
In other embodiments of the shield tunneling machine, the lubricating medium may also be lubricating oil.
In other embodiments of the shield tunneling machine, the first branch oil passage may also be a straight hole, for example, a straight hole may be directly drilled from the seal installation groove of the third seal to communicate with the axial main oil passage.
In other embodiments of the shield tunneling machine, a second outer ring may also be provided near the cutter head at the front end of the main drive assembly, that is, the second outer ring is provided at the front side of the first outer ring, and at this time, the first sealing element, the first pressure plate, and the first tightening bolt are provided on the second outer ring.
In other embodiments of the shield tunneling machine, the rear end of the mating hole of the inner ring is the end close to the cutter head, that is, the installation form of the main drive assembly is changed, at this time, the fourth sealing element is closer to the cutter head, and the second pressure plate and the second tightening bolt are arranged in a matched manner with the fourth sealing element.
In other embodiments of the shield tunneling machine, the first sealing element and the third sealing element may also be the same as the fourth sealing element, and no pressure plate or bolt is provided, and the function of adjusting the compression amount is not provided, at this time, when the abrasion amount of the sealing element is relatively large, the sealing element needs to be replaced frequently.
In other embodiments of the shield tunneling machine, the oil storage cavity may not be provided, and the third lubricating oil passage is directly communicated with the first lubricating oil passage and the second lubricating oil passage.
In other embodiments of the shield tunneling machine, the inner ring does not include the antifriction sleeve, and only the inner ring body is formed, at this time, the inner hole of the inner ring body directly forms the matching hole, and the third oil outlet is arranged on the inner ring body.
In other embodiments of the shield tunneling machine, the main oil gallery does not include the axial main oil gallery, and only consists of the radial main oil gallery, and at this time, each branch oil gallery is directly communicated with the radial main oil gallery.
In other embodiments of the shield tunneling machine, the third lubricating oil passage only includes the main oil passage, an oil outlet of the main oil passage faces the active driving assembly to form a third oil outlet, and at this time, the lubricating medium does not enter the third sealing element and the fourth sealing element, that is, the third lubricating oil passage does not protect the third sealing element and the fourth sealing element.
In other embodiments of the shield tunneling machine, the third lubricating oil passage may be communicated with only the first lubricating oil passage or only the second lubricating oil passage.
The utility model discloses well shield constructs owner joint bearing for drive assembly's embodiment does: the specific structure of the joint bearing for the main driving assembly of the shield machine is the same as that of the joint bearing in the embodiment of the shield machine, and the detailed description is omitted here.
Claims (8)
1. Shield constructs owner joint bearing for drive assembly includes:
the inner ring is provided with an outer spherical surface and a matching hole which is used for being in clearance fit with an active driving assembly of the shield tunneling machine, and the axis of the matching hole extends along the front-back direction;
the first outer ring is arranged outside the inner ring and is provided with a first inner spherical surface matched with the outer spherical surface;
the second outer ring is fixedly connected with the first outer ring and arranged outside the inner ring, and the second outer ring is provided with a second inner spherical surface matched with the outer spherical surface;
a first seal disposed between the inner race and the first outer race;
a second seal disposed between the inner race and the second outer race;
its characterized in that, shield constructs owner joint bearing for drive assembly still includes:
the third sealing element is arranged at the front end of the matching hole of the inner ring and is used for being in sealing contact with the driving component;
the fourth sealing element is arranged at the rear end of the matching hole of the inner ring and is used for being in sealing contact with the driving component;
the first lubricating oil channel is arranged on the first outer ring and provided with a first oil outlet facing the outer spherical surface;
the second lubricating oil channel is arranged on the second outer ring and provided with a second oil outlet facing the outer spherical surface, and the second oil outlet and the first oil outlet are positioned in a sealing area formed by the first sealing element and the second sealing element so as to lubricate the space between the inner ring and the first outer ring and the space between the inner ring and the second outer ring by using a lubricating medium;
and the third lubricating oil channel is arranged on the inner ring, is communicated with the first oil outlet and/or the second oil outlet, is provided with a third oil outlet used for facing the active driving assembly, and is positioned between the third sealing element and the fourth sealing element so as to lubricate the position between the inner ring and the active driving assembly by using a lubricating medium.
2. The joint bearing for the main driving assembly of the shield tunneling machine according to claim 1, wherein the third lubricating oil passage comprises a main oil passage and a branch oil passage communicated with the main oil passage, the main oil passage is communicated with the first oil outlet and/or the second oil outlet, the branch oil passage comprises a first branch oil passage with an oil outlet facing the third sealing element, a second branch oil passage with an oil outlet facing the fourth sealing element, and an oil outlet facing the third branch oil passage of the driving assembly, and the oil outlet of the third branch oil passage is the third oil outlet.
3. The spherical plain bearing for the main drive assembly of the shield tunneling machine according to claim 2, wherein the main oil gallery comprises a radial main oil gallery extending in a radial direction of the inner ring and an axial main oil gallery parallel to an axial direction of the inner ring, the axial main oil gallery is communicated with the radial main oil gallery, and the branch oil gallery is communicated with the axial main oil gallery.
4. The joint bearing for the main driving assembly of the shield tunneling machine according to any one of claims 1 to 3, wherein the inner ring comprises an inner ring body and an anti-friction sleeve fixed on the inner wall of the inner ring body, the inner hole of the anti-friction sleeve forms the fitting hole, and the third oil outlet is arranged on the anti-friction sleeve.
5. The joint bearing for the main driving assembly of the shield tunneling machine according to any one of claims 1 to 3, wherein an oil storage cavity respectively communicated with the first lubricating oil passage, the second lubricating oil passage and the third lubricating oil passage is arranged at the junction of the inner ring, the first outer ring and the second outer ring.
6. The joint bearing for the main driving assembly of the shield tunneling machine according to any one of claims 1 to 3, wherein the first outer ring is located at the front side of the second outer ring, and when in use, the first outer ring is close to a front end cutter head of the main driving assembly, a mounting groove for mounting the first sealing element is arranged on the first outer ring, a pressing plate for pressing the first sealing element is arranged in the mounting groove, a bolt is connected to the first outer ring in a threaded manner, and the bolt is used for tightly pressing the pressing plate to adjust the compression amount of the first sealing element; a fourth lubricating oil channel is further arranged on the first outer ring, and an oil outlet of the fourth lubricating oil channel is arranged towards the first sealing element.
7. The joint bearing for the main driving assembly of the shield tunneling machine according to any one of claims 1-3, wherein the front end of the fitting hole of the inner ring is an end for approaching a front end cutter head of the main driving assembly, a mounting groove for mounting the third sealing element is arranged on the inner ring, a pressing plate for pressing the third sealing element is arranged in the mounting groove, a bolt is connected to the inner ring in a threaded manner, and the bolt is used for tightly pressing the pressing plate to adjust the compression amount of the third sealing element.
8. The shield machine comprises a shield machine main driving assembly and the joint bearing for the shield machine main driving assembly as claimed in any one of the claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922093423.3U CN210919813U (en) | 2019-11-28 | 2019-11-28 | Joint bearing for main driving assembly of shield tunneling machine and shield tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922093423.3U CN210919813U (en) | 2019-11-28 | 2019-11-28 | Joint bearing for main driving assembly of shield tunneling machine and shield tunneling machine |
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| Publication Number | Publication Date |
|---|---|
| CN210919813U true CN210919813U (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922093423.3U Active CN210919813U (en) | 2019-11-28 | 2019-11-28 | Joint bearing for main driving assembly of shield tunneling machine and shield tunneling machine |
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| CN (1) | CN210919813U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377522A (en) * | 2020-10-23 | 2021-02-19 | 东方电气集团东方汽轮机有限公司 | Self-aligning support bearing |
| CN112879423A (en) * | 2021-01-08 | 2021-06-01 | 洛阳Lyc轴承有限公司 | Joint bearing for rail vehicle vibration test bed and service life calculation method thereof |
| CN115584991A (en) * | 2022-12-07 | 2023-01-10 | 中交天和机械设备制造有限公司 | Screw machine telescoping device, muck transportation system and double-mode shield machine based on spherical hinge |
| CN117108903A (en) * | 2023-07-10 | 2023-11-24 | 中交第二公路工程局有限公司 | A TBM main drive visual lubrication equipment and its use method |
-
2019
- 2019-11-28 CN CN201922093423.3U patent/CN210919813U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377522A (en) * | 2020-10-23 | 2021-02-19 | 东方电气集团东方汽轮机有限公司 | Self-aligning support bearing |
| CN112377522B (en) * | 2020-10-23 | 2022-03-01 | 东方电气集团东方汽轮机有限公司 | Self-aligning support bearing |
| CN112879423A (en) * | 2021-01-08 | 2021-06-01 | 洛阳Lyc轴承有限公司 | Joint bearing for rail vehicle vibration test bed and service life calculation method thereof |
| CN112879423B (en) * | 2021-01-08 | 2022-08-23 | 洛阳Lyc轴承有限公司 | Joint bearing for rail vehicle vibration test bed and service life calculation method thereof |
| CN115584991A (en) * | 2022-12-07 | 2023-01-10 | 中交天和机械设备制造有限公司 | Screw machine telescoping device, muck transportation system and double-mode shield machine based on spherical hinge |
| CN117108903A (en) * | 2023-07-10 | 2023-11-24 | 中交第二公路工程局有限公司 | A TBM main drive visual lubrication equipment and its use method |
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Effective date of registration: 20221121 Address after: 471000 No. 1, Sanxi Road, Science and Technology Industrial Park, Jianxi District, Luoyang, Henan Patentee after: Luoyang axis Research Technology Co.,Ltd. Address before: 471000 No. 1 axis research road, Jianxi science and Technology Industrial Park, Luoyang, Henan Patentee before: LUOYANG BEARING RESEARCH INSTITUTE Co.,Ltd. |