CN116906257A - Hydraulic motor with overload pressure relief function - Google Patents
Hydraulic motor with overload pressure relief function Download PDFInfo
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- CN116906257A CN116906257A CN202310344431.9A CN202310344431A CN116906257A CN 116906257 A CN116906257 A CN 116906257A CN 202310344431 A CN202310344431 A CN 202310344431A CN 116906257 A CN116906257 A CN 116906257A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
- F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
- F03C1/0403—Details, component parts specially adapted of such engines
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
本发明公开了一种具有过载泄压功能的液压马达，包括壳体、内曲线圈、活塞驱动机构、分流机构、输出轴、进油管和回油管，所述壳体内部固定安装有内曲线圈，且壳体内部设置有主轴，所述主轴外侧转动连接有活塞驱动机构，且活塞驱动机构外侧贴合内曲线圈内壁设置。该具有过载泄压功能的液压马达，设置有泄压机构和减压管，液压推动打开减压阀，使进油管通过减压管直接与减压管相连通，便于超压的液压油通过减压管回到泵送装置，而活塞槽内液压过大时，液压克服第一压缩弹簧的弹力推动堵头及活塞板，使活塞槽内的液压油经过堵孔进入泄压腔，通过上述双重结构保护了该液压马达内部部件不受过载超压的液压油影响，使用起来更加安全。
The invention discloses a hydraulic motor with an overload pressure relief function, which includes a casing, an inner curved ring, a piston driving mechanism, a diverting mechanism, an output shaft, an oil inlet pipe and an oil return pipe. The inner curved ring is fixedly installed inside the casing. , and a main shaft is provided inside the housing, a piston driving mechanism is rotatably connected to the outside of the main shaft, and the outside of the piston driving mechanism is arranged to fit the inner wall of the inner curved circle. The hydraulic motor with overload pressure relief function is equipped with a pressure relief mechanism and a pressure reducing pipe. The pressure reducing valve is opened by hydraulic pressure, so that the oil inlet pipe is directly connected to the pressure reducing pipe through the pressure reducing pipe, so that the overpressure hydraulic oil can pass through the pressure reducing pipe. The pressure pipe returns to the pumping device, and when the hydraulic pressure in the piston groove is too large, the hydraulic pressure overcomes the elastic force of the first compression spring and pushes the plug and piston plate, so that the hydraulic oil in the piston groove enters the pressure relief chamber through the plugged hole, and passes through the above-mentioned double The structure protects the internal components of the hydraulic motor from overload and overpressure of hydraulic oil, making it safer to use.
Description
Technical Field
The invention relates to the technical field of hydraulic motors, in particular to a hydraulic motor with an overload pressure relief function.
Background
The hydraulic motor is an executive component in a liquid system, has the advantages of high power-weight ratio, large output torque and strong bearing capacity, and is widely applied to the fields of navigation, aviation, engineering machinery and the like.
In the actual use, the part in the hydraulic motor will be worn and torn inevitably by frictional force influence, and current hydraulic motor is not provided with wear compensation mechanism generally, along with the growth of live time, this hydraulic motor seal also becomes invalid gradually, then lead to hydraulic motor's work efficiency to reduce, and life is influenced by the part wearing and tearing greatly, and current hydraulic motor relies on only to let out the pressure pipe pressure release that is linked together with the oil feed pipe usually, and drive plunger part is not provided with pressure release mechanism, once this hydraulic motor stops the operation, and inside confined hydraulic oil is heated the expansion, very easily lead to this hydraulic motor internal part overload deformation, vibrate above-mentioned problem, need improve current equipment.
Disclosure of Invention
The invention aims to provide a hydraulic motor with an overload pressure relief function, so as to solve the problems that the prior hydraulic motor proposed in the background art is not provided with a wear compensation mechanism, the sealing of the hydraulic motor is gradually failed along with the increase of the service time, the working efficiency of the hydraulic motor is reduced, the service life is greatly influenced by the wear of components, the prior hydraulic motor is usually relieved by only relying on a pressure relief pipe communicated with an oil inlet pipe, a driving plunger part is not provided with the pressure relief mechanism, and once the hydraulic motor stops running, the internal sealed hydraulic oil is heated and expanded, and the overload deformation of the internal components of the hydraulic motor is extremely easy to cause.
In order to achieve the above purpose, the present invention provides the following technical solutions: the hydraulic motor with the overload pressure relief function comprises a shell, an inner curved coil, a piston driving mechanism, a flow dividing mechanism, an output shaft, an oil inlet pipe and an oil return pipe, wherein the inner curved coil is fixedly arranged in the shell, a main shaft is arranged in the shell, the outer side of the main shaft is rotationally connected with the piston driving mechanism, and the outer side of the piston driving mechanism is attached to the inner wall of the inner curved coil;
one end of the main shaft is provided with a connecting mechanism, one end of the piston driving mechanism is provided with a shunting mechanism in a laminating way, and the shunting mechanism is connected with the main shaft through the connecting mechanism;
the end cover is installed to casing one side, and the terminal surface middle part rotates to be connected with the connecting sleeve, piston actuating mechanism one end is provided with the spline housing, and spline housing and connecting sleeve splined connection, the one end that the spline shaft axle sleeve was kept away from to the connecting sleeve is provided with the output shaft, the casing is run through with main shaft inside has into oil pipe and returns oil pipe, and returns oil pipe and advance oil pipe between and be linked together through the relief pressure pipe, relief pressure pipe internally mounted has the relief pressure valve simultaneously.
Preferably, the piston driving mechanism comprises a rotary table, a piston groove, a piston head, a rotating wheel, a connecting hole and a pressure relief mechanism, wherein the rotary table is rotatably arranged on the outer side of the main shaft, the piston groove is formed in the outer side of the rotary table, the piston head is slidably arranged in the piston groove, one side, far away from the rotary table, of the piston head is rotatably connected with the rotating wheel, the connecting hole communicated with the piston groove is formed in the rotary table, and the pressure relief mechanism is arranged in the piston head;
by adopting the technical scheme, oil enters the piston groove through the connecting hole, the piston head is extruded through hydraulic pressure, the piston head extrudes the inner curved coil, and the rotating disc is pushed to rotate by utilizing the reaction force.
Preferably, the center line of the turntable, the rotation symmetry axes of the plurality of piston heads, the center line of the inner curved coil, the center line of the flow dividing plate, the rotation symmetry axes of the plurality of oil inlet holes and the rotation symmetry axes of the plurality of oil return holes are all coincident with the center line of the main shaft;
through adopting above-mentioned technical scheme, when making the carousel rotate, the connecting hole is linked together with inlet port or oil gallery all the time, and the piston head rotates around the main shaft on the carousel simultaneously.
Preferably, the pressure release mechanism comprises a pressure release cavity, a piston plate, a plug, a plugging hole and a first compression spring, wherein the pressure release cavity is formed in the piston head, the piston plate is slidably arranged in the pressure release cavity, one end of the piston plate is fixed with the plug, the other end of the piston plate is connected with the first compression spring in the pressure release cavity, the pressure release cavity is communicated with the piston groove through the plugging hole formed in the piston head, and the plug is attached to the inner wall of the plugging hole;
through adopting above-mentioned technical scheme, first compression spring promotes piston plate and end cap, makes the end cap paste closely stifled hole and separates piston groove and pressure release chamber, and in case the hydraulic pressure in the piston groove is too big, hydraulic pressure promotes the end cap to open stifled hole, makes the hydraulic oil pressure release in the hydraulic pressure groove get into the pressure release intracavity, has played the effect of protecting this hydraulic motor internal part.
Preferably, the connecting mechanism comprises a spline shaft, a threaded column, a pressing plate and a second compression spring, wherein one end of the spline shaft is arranged on the main shaft, the spline shaft penetrates through the flow dividing mechanism and is rotationally connected with the flow dividing mechanism, the threaded column is fixed at one end of the spline shaft, the pressing plate is in threaded connection with the outer side of the threaded column, the second compression spring is fixed at one end of the pressing plate, and the other end of the second compression spring is attached to the flow dividing mechanism;
through adopting above-mentioned technical scheme, in case the flow distribution plate in the flow distribution mechanism produces wearing and tearing, the second compression spring promotes the flow distribution plate and pastes tight carousel, makes the connecting hole on the carousel remain the intercommunication with inlet port and the oil return hole on the flow distribution plate all the time.
Preferably, the flow dividing mechanism comprises a flow dividing plate, an oil inlet flow dividing cavity, an oil return flow dividing cavity, an oil inlet hole, an oil return hole, an oil inlet plunger, an oil return plunger and a slide hole, wherein the oil inlet flow dividing cavity and the oil return flow dividing cavity are formed in the flow dividing plate, and the slide hole communicated with the oil inlet pipe and the oil return pipe is formed in the surface of the main shaft;
through adopting above-mentioned technical scheme, be convenient for high-pressure hydraulic oil distributes to each hydraulic tank inside through the cooperation of advance oil flow distribution chamber and inlet port, and the low-pressure hydraulic oil in each hydraulic tank gathers through the return oil flow distribution chamber simultaneously.
Preferably, one side of the flow distribution plate is provided with an oil inlet plunger communicated with an oil inlet flow distribution cavity, the oil inlet plunger is slidably arranged in the sliding hole and is communicated with the oil inlet pipe, the oil inlet flow distribution cavity is communicated with the connecting hole through an oil inlet hole formed in the surface of the flow distribution plate, the other side of the flow distribution plate is provided with an oil return plunger communicated with an oil return flow distribution cavity, the oil return plunger is slidably arranged in the sliding hole and is communicated with the oil return pipe, and the oil return flow distribution cavity is communicated with the connecting hole through an oil return hole formed in the surface of the flow distribution plate;
through adopting above-mentioned technical scheme, the hydraulic pump loops through oil feed pipe, oil feed reposition of redundant personnel chamber, inlet port and connecting hole and carries high-pressure hydraulic oil to the hydraulic tank in, and the low-pressure hydraulic oil that does not communicate with the hydraulic pump simultaneously passes through another group of connecting hole, oil return reposition of redundant personnel chamber and returns the oil pipe in proper order and discharges.
Preferably, the oil inlet holes and the oil return holes are staggered, and the distance between the oil inlet holes and the adjacent oil return holes is equal to the diameter of the connecting hole;
through adopting above-mentioned technical scheme, make the connecting hole be linked together with inlet port and oil gallery in proper order when the carousel rotates, guarantee simultaneously that the connecting hole can not be linked together with inlet port and oil gallery simultaneously, avoided the hydraulic pump to take place to leak at the pressurization in-process, lead to the problem that hydraulic motor energy conversion efficiency reduces.
Preferably, a certain gap is reserved between one end of the oil inlet plunger and one end of the oil return plunger and the inner wall of the sliding hole, and a certain gap is reserved between the middle part of the flow dividing plate and one end of the main shaft;
through adopting above-mentioned technical scheme, after the division board wearing and tearing, the second compression spring promotes the division board and is close the main shaft, advances oil plunger and oil return plunger simultaneously and slides in a sliding hole respectively, has played the effect of compensation then.
Compared with the prior art, the invention has the beneficial effects that: the hydraulic motor with the overload relief function,
(1) The hydraulic oil in the piston groove enters the pressure relief cavity through the blocking hole, and the internal components of the hydraulic motor are protected from the influence of the overload and overpressure hydraulic oil through the double structure, so that the hydraulic oil is safer to use;
(2) The rotary table, the pressing plate and the flow dividing plate are arranged, the pressing plate fixed on the threaded column limits the position of one end of the second compression spring, the second compression spring pushes the flow dividing plate to be tightly attached to the rotary table, when the rotary table rotates to enable the contact surface of the rotary table and the flow dividing plate to be worn, the second compression spring continuously pushes the flow dividing plate, meanwhile, the oil inlet plunger and the oil return plunger respectively penetrate into one sliding hole, the flow dividing plate is tightly attached to the rotary table all the time, meanwhile, the oil inlet hole and the oil return hole on the flow dividing plate are communicated with the connecting hole on the rotary table, gaps generated due to running wear are conveniently and automatically filled, leakage of the hydraulic motor after long-time use is reduced, and the use effect is improved;
(3) The end cover and the inner curve coil are arranged, the end cover is opened, the turntable is manually pushed to rotate, at the moment, the piston heads on the turntable are contacted with the inner wall of the inner curve coil and shrink until all piston heads shrink into the innermost side of the piston groove, at the moment, the positions of the piston heads are fixed by utilizing the negative pressure effect, the bolts on the inner curve coil are taken down, the inner curve coil is taken down in a sliding mode, the new inner curve coil is replaced, the parts inside the hydraulic motor are simplified, the inner curve coil easy to wear is replaced, the maintenance difficulty is reduced, and the hydraulic motor is more practical to use.
Drawings
FIG. 1 is a schematic view of a front view in cross section;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic diagram of a cross-sectional structure of an oil return diversion cavity of the present invention;
FIG. 4 is a schematic diagram of a cross-sectional structure of an oil inlet distribution chamber according to the present invention;
FIG. 5 is an enlarged schematic view of the structure of FIG. 1A according to the present invention;
FIG. 6 is a schematic view of a three-dimensional cutaway structure of a diverter plate according to the present invention.
In the figure: 1. the casing, 2, the inner winding, 3, the main shaft, 4, the piston driving mechanism, 41, the turntable, 42, the piston groove, 43, the piston head, 44, the rotating wheel, 45, the connecting hole, 46, the pressure relief mechanism, 461, the pressure relief cavity, 462, the piston plate, 463, the plug, 464, the plug hole, 465, the first compression spring, 5, the connecting mechanism, 51, the spline shaft, 52, the threaded column, 53, the pressing plate, 54, the second compression spring, 6, the shunt mechanism, 61, the shunt plate, 62, the oil inlet shunt cavity, 63, the oil return shunt cavity, 64, the oil inlet hole, 65, the oil return hole, 66, the oil inlet plunger, 67, the oil return plunger, 68, the slide hole, 7, the end cover, 8, the connecting shaft sleeve, 9, the spline housing, 10, the output shaft, 11, the oil inlet pipe, 12, the oil return pipe, 13, the pressure reducing pipe, 14 and the pressure reducing valve.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the present invention provides a technical solution: as shown in fig. 1 and 2, an inner curved coil 2 is fixedly installed inside a shell 1, a main shaft 3 is arranged inside the shell 1, a piston driving mechanism 4 is rotatably connected to the outer side of the main shaft 3, and the outer side of the piston driving mechanism 4 is attached to the inner wall of the inner curved coil 2.
In a further embodiment, the piston driving mechanism 4 comprises a turntable 41, a piston groove 42, a piston head 43, a rotating wheel 44, a connecting hole 45 and a pressure release mechanism 46, the turntable 41 is rotatably arranged on the outer side of the main shaft 3, the piston groove 42 is arranged on the outer side of the turntable 41, the piston head 43 is slidably arranged in the piston groove 42, the rotating wheel 44 is rotatably connected to one side of the piston head 43 far away from the turntable 41, the connecting hole 45 communicated with the piston groove 42 is arranged in the turntable 41, the pressure release mechanism 46 is arranged in the piston head 43, high-pressure hydraulic oil enters the piston groove 42 through the connecting hole 45 and pushes the piston head 43, the rotating wheel 44 on the piston head 43 contacts the inner wall of the inner curved coil 2 and pushes the turntable 41 to rotate by utilizing reaction force, and when the turntable 41 rotates, the same connecting hole 45 rotates and is gradually communicated with the oil return hole 65, and meanwhile the piston head 43 is pushed back into the piston groove 42 by the inner wall of the inner curved coil 2, so that the hydraulic oil in the piston groove 42 is discharged through the connecting hole 45.
As shown in fig. 1 and 5, the center line of the turntable 41, the rotational symmetry axis of the plurality of piston heads 43, the center line of the inner curved coil 2, the center line of the flow dividing plate 61, the rotational symmetry axis of the plurality of oil inlet holes 64 and the rotational symmetry axis of the plurality of oil return holes 65 are all coincident with the center line of the main shaft 3, and when the turntable 41 rotates, the piston heads 43 rotate around the main shaft 3, so that the rotating wheels 44 on the plurality of piston heads 43 uniformly circulate to be in contact with the inner wall of the inner curved coil 2, and the plurality of oil inlet holes 64 are communicated with the plurality of oil return holes 65 and the connecting holes 45.
In a further embodiment, the pressure release mechanism 46 includes a pressure release chamber 461, a piston plate 462, a plug 463, a plug hole 464, and a first compression spring 465, where the pressure release chamber 461 is opened inside the piston head 43, the pressure release chamber 461 is internally slidably provided with the piston plate 462, one end of the piston plate 462 is fixed with the plug 463, the other end of the piston plate 462 is connected with the first compression spring 465 inside the pressure release chamber 461, the pressure release chamber 461 is communicated with the piston groove 42 through the plug hole 464 opened on the piston head 43, the plug 463 is attached to the inner wall of the plug hole 464, when the hydraulic pressure in the piston groove 42 is too high, the hydraulic pressure overcomes the elasticity of the first compression spring 465 to push the plug 463 and the piston plate 462, so that the hydraulic oil in the piston groove 42 enters the pressure release chamber 461 through the plug hole 464, and once the hydraulic pressure is smaller than the elasticity of the first compression spring 465, the first compression spring 465 pushes the piston plate 462 and the plug 463 to reset, and the hydraulic oil in the pressure release chamber 461 returns to the interior of the piston groove 42.
As shown in fig. 2, the spindle 3 is provided at one end with a connection mechanism 5.
In a further embodiment, the connecting mechanism 5 comprises a spline shaft 51, a threaded post 52, a pressing plate 53 and a second compression spring 54, one end of the spline shaft 51 is arranged on the main shaft 3, the spline shaft 51 penetrates through the split mechanism 6 and is rotationally connected with the split mechanism, the threaded post 52 is fixed at one end of the spline shaft 51, the pressing plate 53 is in threaded connection with the outer side of the threaded post 52, the second compression spring 54 is fixed at one end of the pressing plate 53, the other end of the second compression spring 54 is arranged in fit with the split mechanism 6, the pressing plate 53 is rotated, the pressing plate 53 pushes the second compression spring 54, the second compression spring 54 contracts and presses the split plate 61, and the split plate 61 slides along the spline shaft 51 and is in fit with the turntable 41.
As shown in fig. 1 and 6, one end of the piston driving mechanism 4 is provided with a shunt mechanism 6 in a fitting manner, and the shunt mechanism 6 is connected with the main shaft 3 through a connecting mechanism 5.
In a further embodiment, the flow dividing mechanism 6 includes a flow dividing plate 61, an oil inlet flow dividing chamber 62, an oil return flow dividing chamber 63, an oil inlet hole 64, an oil return hole 65, an oil inlet plunger 66, an oil return plunger 67 and a sliding hole 68, the oil inlet flow dividing chamber 62 and the oil return flow dividing chamber 63 are formed in the flow dividing plate 61, the sliding hole 68 communicated with the oil inlet pipe 11 and the oil return pipe 12 is formed in the surface of the main shaft 3, hydraulic oil enters the oil inlet flow dividing chamber 62 through the oil inlet pipe 11 and is dispersed to each oil inlet hole 64, hydraulic oil in the piston groove 42 is collected into the oil return flow dividing chamber 63 through each oil return hole 65, and then hydraulic oil in the oil return flow dividing chamber 63 is discharged through the oil return pipe 12.
As shown in fig. 3 and 4, one side of the flow dividing plate 61 is provided with an oil feeding plunger 66 communicated with the oil feeding flow dividing cavity 62, the oil feeding plunger 66 is slidably arranged in the sliding hole 68 and communicated with the oil feeding pipe 11, the oil feeding flow dividing cavity 62 is communicated with the connecting hole 45 through an oil feeding hole 64 formed in the surface of the flow dividing plate 61, the other side of the flow dividing plate 61 is provided with an oil return plunger 67 communicated with the oil return flow dividing cavity 63, the oil return plunger 67 is slidably arranged in the sliding hole 68 and communicated with the oil feeding pipe 12, the oil return flow dividing cavity 63 is communicated with the connecting hole 45 through an oil return hole 65 formed in the surface of the flow dividing plate 61, when the flow dividing plate 61 is worn due to the influence of rotation, the first compression spring 465 pushes the flow dividing plate 61 to slide, at this time, the oil feeding plunger 66 on the flow dividing plate 61 penetrates into the sliding hole 68 communicated with the oil feeding pipe 11, the oil return plunger 67 on the flow dividing plate 61 stretches into the sliding hole 68 communicated with the oil feeding pipe 12, after the flow dividing plate 61 is shifted, the oil feeding flow dividing cavity 62 is kept communicated with the oil feeding pipe 11 through the matching between the oil feeding plunger 66 and the sliding hole 68, and the oil returning pipe 67 is kept communicated with the other oil feeding pipe 12 through the matching between the sliding hole 67 and the sliding hole 12.
In a further embodiment, the oil inlet holes 64 and the oil return holes 65 are staggered, and the distance between the oil inlet holes 64 and the adjacent oil return holes 65 is equal to the diameter of the connecting hole 45, and when the turntable 41 rotates, the connecting hole 45 on the turntable 41 is sequentially communicated with the oil inlet holes 64 and the oil return holes 65.
As shown in fig. 6, a certain gap is left between one end of the oil inlet plunger 66 and one end of the oil return plunger 67 and the inner wall of the slide hole 68, and a certain gap is left between the middle part of the flow dividing plate 61 and one end of the main shaft 3, so that when the flow dividing plate 61 is displaced, the oil inlet plunger 66 and the oil return plunger 67 move along with the slide hole 68, and the position compensation function is achieved.
As shown in fig. 1 and 2, an end cover 7 is installed on one side of a shell 1, a connecting shaft sleeve 8 is rotationally connected to the middle of the end face, a spline sleeve 9 is arranged at one end of a piston driving mechanism 4, the spline sleeve 9 is in spline connection with the connecting shaft sleeve 8, an output shaft 10 is arranged at one end, far away from a spline shaft 51, of the connecting shaft sleeve 8, an oil inlet pipe 11 and an oil return pipe 12 penetrate through the inside of the shell 1 and a main shaft 3, the oil return pipe 12 is communicated with the oil inlet pipe 11 through a pressure reducing pipe 13, and a pressure reducing valve 14 is installed inside the pressure reducing pipe 13.
When in use, the pumping equipment injects high-pressure hydraulic oil into the oil inlet flow distribution cavity 62 through the oil inlet pipe 11, the high-pressure hydraulic oil is distributed to each oil inlet hole 64 through the oil inlet flow distribution cavity 62, when the oil inlet holes 64 are communicated with the connecting holes 45, the high-pressure hydraulic oil enters the piston grooves 42, then the high-pressure hydraulic oil pushes the piston heads 43 to slide along the piston grooves 42 under the action of the hydraulic pressure, meanwhile, the rotating wheels 44 on the piston heads 43 contact the inner walls of the inner curved coils 2, the rotating discs 41 are pushed to rotate under the reaction force, the rotating discs 41 are driven by the connecting shaft sleeves 8 and the spline sleeves 9 to drive the output shafts 10 to rotate, the output shafts 10 drive other equipment, the rotating wheels 44 on the rotating discs 41 rotate along the inner curved coils 2, meanwhile, the rotating wheels 44 autorotate to reduce abrasion caused by the reaction force, the connecting holes 45 corresponding to the piston grooves 42 are gradually separated from the communication with the oil inlet holes 64 and are gradually communicated with the oil return holes 65 when the rotating discs 41, at this time, the hydraulic oil in the piston groove 42 loses the external hydraulic pressure, which is called low-pressure hydraulic oil, and at the same time, the piston head 43 is pushed back into the piston groove 42 by the inner wall of the inner curved coil 2, the low-pressure hydraulic oil in the plurality of piston grooves 42 is collected into the oil return diversion cavity 63 and finally returns to the inside of the pumping equipment through the oil return pipe 12, once the hydraulic pressure in the oil inlet pipe 11 is too high, the oil pushes to open the pressure reducing valve 14, so that the oil inlet pipe 11 is communicated with the oil return pipe 12 through the pressure reducing pipe 13, once the hydraulic pressure in the closed piston groove 42 is too high, the hydraulic pressure overcomes the elasticity of the first compression spring 465 to push the plug 463 and the piston plate 462 to slide along the pressure reducing cavity 461, the hydraulic oil in the piston groove 42 enters the pressure reducing cavity 461 through the plug hole 464, the hydraulic pressure in the piston groove 42 is reduced, when the hydraulic motor is out of overload, the first compression spring 465 pushes the piston plate 462 to reversely move, so that the piston plate 462 and the plug 463 are reset, meanwhile, hydraulic oil in the pressure relief cavity 461 automatically returns to the inside of the piston groove 42, the hydraulic oil can be used for a second time without manual reset, the bolts on the end cover 7 are rotationally taken down, the turntable 41 is manually pushed, the piston heads 43 on the turntable 41 sequentially contact the inner walls of the inner curved coils 2, the inner curved coils 2 push the piston heads 43 to shrink in the piston groove 42, meanwhile, the positions of the piston heads 43 are fixed by utilizing negative pressure, the bolts on the inner curved coils 2 are rotationally taken down, the new inner curved coils 2 are replaced, and the end cover 7 is installed, so that the installation structure of the inner curved coils 2 is simplified, the quick replacement of easily worn parts is facilitated, the maintenance difficulty is reduced, the hydraulic oil is more practical, and the hydraulic oil is more practical to use.
The terms "center," "longitudinal," "transverse," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for descriptive simplicity and convenience only and not as an indication or implying that the apparatus or element being referred to must have a particular orientation, be constructed and operated for a particular orientation, based on the orientation or positional relationship illustrated in the drawings, and thus should not be construed as limiting the scope of the present invention.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (9)
1. The utility model provides a hydraulic motor with overload pressure release function, includes casing (1), inner curved coil (2), piston actuating mechanism (4), reposition of redundant personnel mechanism (6), output shaft (10), advance oil pipe (11) and returns oil pipe (12), its characterized in that: the inner part of the shell (1) is fixedly provided with an inner curved coil (2), the inside of the shell (1) is provided with a main shaft (3), the outer side of the main shaft (3) is rotationally connected with a piston driving mechanism (4), and the outer side of the piston driving mechanism (4) is attached to the inner wall of the inner curved coil (2);
one end of the main shaft (3) is provided with a connecting mechanism (5), one end of the piston driving mechanism (4) is provided with a shunting mechanism (6) in a laminating way, and the shunting mechanism (6) is connected with the main shaft (3) through the connecting mechanism (5);
the end cover (7) is installed to casing (1) one side, and the terminal surface middle part rotates and is connected with connecting sleeve (8), piston actuating mechanism (4) one end is provided with spline housing (9), and spline housing (9) and connecting sleeve (8) splined connection, the one end that spline shaft (51) axle sleeve was kept away from to connecting sleeve (8) is provided with output shaft (10), casing (1) and main shaft (3) are inside to be run through have oil feed pipe (11) and to return oil pipe (12), and is linked together through reducing tube (13) between oil feed pipe (12) and oil feed pipe (11), and reducing tube (13) internally mounted has relief pressure valve (14) simultaneously.
2. A hydraulic motor with overload relief as claimed in claim 1, wherein: the piston driving mechanism (4) comprises a rotary table (41), a piston groove (42), a piston head (43), a rotating wheel (44), a connecting hole (45) and a pressure release mechanism (46), wherein the rotary table (41) is rotatably arranged on the outer side of a main shaft (3), the piston groove (42) is formed in the outer side of the rotary table (41), the piston head (43) is slidably arranged in the piston groove (42), the rotating wheel (44) is rotatably connected to one side, far away from the rotary table (41), of the piston head (43), the connecting hole (45) communicated with the piston groove (42) is formed in the rotary table (41), and the pressure release mechanism (46) is arranged in the piston head (43).
3. A hydraulic motor with overload relief as claimed in claim 2, wherein: the center line of the turntable (41), the rotational symmetry axes of the plurality of piston heads (43), the center line of the inner curved coil (2), the center line of the flow dividing plate (61), the rotational symmetry axes of the plurality of oil inlet holes (64) and the rotational symmetry axes of the plurality of oil return holes (65) are all coincident with the center line of the main shaft (3).
4. A hydraulic motor with overload relief as claimed in claim 2, wherein: the pressure release mechanism (46) comprises a pressure release cavity (461), a piston plate (462), a plug (463), a plug hole (464) and a first compression spring (465), wherein the pressure release cavity (461) is formed inside a piston head (43), the piston plate (462) is slidably mounted inside the pressure release cavity (461), one end of the piston plate (462) is fixedly provided with the plug (463), the other end of the piston plate (462) is connected with the first compression spring (465) inside the pressure release cavity (461), the pressure release cavity (461) is communicated with a piston groove (42) through the plug hole (464) formed in the piston head (43), and the plug hole (464) is formed in a manner of being attached to the inner wall of the plug hole (463).
5. A hydraulic motor with overload relief as claimed in claim 1, wherein: coupling mechanism (5) are including spline shaft (51), screw thread post (52), clamp plate (53) and second compression spring (54), spline shaft (51) one end sets up on main shaft (3), and spline shaft (51) run through reposition of redundant personnel mechanism (6) and rotate rather than being connected, spline shaft (51) one end is fixed with screw thread post (52), and screw thread post (52) outside threaded connection has clamp plate (53), clamp plate (53) one end is fixed with second compression spring (54), and second compression spring (54) other end laminating reposition of redundant personnel mechanism (6) set up.
6. A hydraulic motor with overload relief as claimed in claim 1, wherein: the split-flow mechanism (6) comprises a split-flow plate (61), an oil inlet split-flow cavity (62), an oil return split-flow cavity (63), an oil inlet hole (64), an oil return hole (65), an oil inlet plunger (66), an oil return plunger (67) and a slide hole (68), wherein the oil inlet split-flow cavity (62) and the oil return split-flow cavity (63) are formed in the split-flow plate (61), and the slide hole (68) communicated with the oil inlet pipe (11) and the oil return pipe (12) is formed in the surface of the main shaft (3).
7. The hydraulic motor with overload relief function of claim 6, wherein: the oil inlet plunger (66) communicated with the oil inlet flow distribution cavity (62) is arranged on one side of the flow distribution plate (61), the oil inlet plunger (66) is slidably mounted inside the sliding hole (68) and is communicated with the oil inlet pipe (11), the oil inlet flow distribution cavity (62) is communicated with the connecting hole (45) through an oil inlet hole (64) formed in the surface of the flow distribution plate (61), an oil return plunger (67) communicated with the oil return flow distribution cavity (63) is arranged on the other side of the flow distribution plate (61), the oil return plunger (67) is slidably mounted inside the sliding hole (68) and is communicated with the oil return pipe (12), and the oil return flow distribution cavity (63) is communicated with the connecting hole (45) through an oil return hole (65) formed in the surface of the flow distribution plate (61).
8. The hydraulic motor with overload relief function of claim 6, wherein: the oil inlet holes (64) and the oil return holes (65) are arranged in a staggered mode, and the distance between the oil inlet holes (64) and the adjacent oil return holes (65) is equal to the diameter of the connecting hole (45).
9. The hydraulic motor with overload relief function of claim 6, wherein: a certain gap is reserved between one end of the oil inlet plunger (66) and one end of the oil return plunger (67) and the inner wall of the sliding hole (68), and a certain gap is reserved between the middle part of the flow dividing plate (61) and one end of the main shaft (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310344431.9A CN116906257B (en) | 2023-04-03 | A hydraulic motor with overload relief function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310344431.9A CN116906257B (en) | 2023-04-03 | A hydraulic motor with overload relief function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116906257A true CN116906257A (en) | 2023-10-20 |
| CN116906257B CN116906257B (en) | 2026-02-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118855628A (en) * | 2024-09-24 | 2024-10-29 | 湖南尚科能源科技有限公司 | A hydraulic drive motor with an oil control valve assembly |
| CN119641736A (en) * | 2024-12-30 | 2025-03-18 | 德科隆（无锡）流体控制有限公司 | Hydraulic oil return valve body |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140298982A1 (en) * | 2013-04-05 | 2014-10-09 | Sampo-Hydraulics Oy | Radial Piston Hydraulic Motor |
| WO2018090159A1 (en) * | 2016-11-18 | 2018-05-24 | 秦皇岛正时乐液压设备有限公司 | Internally curved low-speed high-torque hydraulic motor with torque being output by means of rotation of housing |
| CN112177843A (en) * | 2020-10-09 | 2021-01-05 | 东莞海特帕沃液压科技有限公司 | Inner curve radial plunger hydraulic motor |
| CN112594124A (en) * | 2021-01-27 | 2021-04-02 | 合肥皖液液压元件有限公司 | Novel integrated motor with automatic unloading function of overload |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140298982A1 (en) * | 2013-04-05 | 2014-10-09 | Sampo-Hydraulics Oy | Radial Piston Hydraulic Motor |
| WO2018090159A1 (en) * | 2016-11-18 | 2018-05-24 | 秦皇岛正时乐液压设备有限公司 | Internally curved low-speed high-torque hydraulic motor with torque being output by means of rotation of housing |
| CN112177843A (en) * | 2020-10-09 | 2021-01-05 | 东莞海特帕沃液压科技有限公司 | Inner curve radial plunger hydraulic motor |
| CN112594124A (en) * | 2021-01-27 | 2021-04-02 | 合肥皖液液压元件有限公司 | Novel integrated motor with automatic unloading function of overload |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118855628A (en) * | 2024-09-24 | 2024-10-29 | 湖南尚科能源科技有限公司 | A hydraulic drive motor with an oil control valve assembly |
| CN119641736A (en) * | 2024-12-30 | 2025-03-18 | 德科隆（无锡）流体控制有限公司 | Hydraulic oil return valve body |
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