JP5570169B2 - Slide-type chain bracket for hanging suspension - Google Patents

Description

  The present invention relates to a sliding chain bracket used when a workpiece such as a steel material is squeezed and suspended with a sling chain suspended on a hook of a crane, and more specifically, the length of the sling chain can be adjusted in the sliding chain bracket. It is related with the thing provided with the composition.

  When squeezing and lifting a steel material such as a column or shape steel, or when lifting and transporting a large number of small-diameter round bars or steel pipes together These works are squeezed and suspended with a sling chain suspended on a hook. At this time, it is necessary to adjust the length of the sling chain (shorten the sling chain) (generally called shortening) depending on the lift of the crane, the work space, and the like.

  More specifically, as shown in FIG. 16, a coupling 2 is connected to a master link 1 connected to a crane hook (not shown), a sling chain 3 is connected to this coupling 2, The length of the sling chain 3 is adjusted by connecting the shortening block 5 via the three-link chain 4 and engaging the sling chain 3 at an arbitrary position while passing through the shortening block 5. The sling chain 3 whose length has been adjusted in this manner is wound around the outer periphery of the work 7 (column = square steel pipe in this example) through the chain slide hole of the slide hook 6 and is coupled to the tip of the coupler. The work 7 is squeezed and suspended while the 8 is engaged with the slide hook 6.

Eagle Clamp Co., “Chain sling product search”, [online], [Search September 10, 2009], Internet (URL: http://www.eagleclamp.co.jp/products/chain_search.php),

  According to the above-described prior art, there are a total of seven points: a master link 1, a coupling 2, a sling chain 3, a 3 link chain 4, a shortening block 5, a slide hook 6, and a coupler 8, as drawing suspension parts with a length adjusting function. Necessary and costly.

  In addition, when adjusting the length of the sling chain 3, the crane hook has to be lowered to a position where the operator can reach the shortening block 5, and the complexity of workability has been a problem.

  Furthermore, when a large number of small diameter long materials such as round bars and steel pipes are squeezed and suspended together, the slide hook 6 becomes an obstacle and the work cannot be completely squeezed. .

  Therefore, the problem to be solved by the present invention is to reduce the number of parts for adjusting the length of the sling chain, to facilitate the length adjustment work, and to squeeze a large number of small diameter long materials together. It is an object of the present invention to provide a sliding-type chain fitting for squeezing and lifting having a novel configuration that can fully squeeze a workpiece when it is hung and can safely work without risk of dropping the workpiece.

In order to solve this problem, the present invention according to claim 1 is a slide-type chain fitting used when a workpiece is drawn and suspended by a sling chain suspended on a hook of a crane, wherein the sling chain can be slid. A chain slide hole to be inserted, and a locking part for adjusting the length by locking one link at an arbitrary position in a state in which the sling chain inserted through the chain slide hole is wound around the work and made one round. The chain slide part having a chain slide hole and the locking part are connected to each other so as to be relatively rotatable .

According to a second aspect of the present invention, there is provided the slide-type chain bracket for suspending a diaphragm according to the first aspect, wherein two stoppers formed to protrude at a predetermined angle from the connecting end portion of the chain slide portion are provided on the locking portion. The chain slide part and the locking part can be in contact with the stopper formed on the connecting end, and the first relative position where one stopper contacts the stopper and the other stopper contacts the stopper. Relative rotation is possible within a predetermined angle range between the second relative position and the second relative position .

  According to the present invention, a chain slide hole through which a sling chain is slidably inserted, and a link at an arbitrary position in a state in which the sling chain inserted through the chain slide hole is wound around the work and substantially made a round are engaged. Since the slide-type chain fitting provided with the locking portion that stops and adjusts the length is provided, it is not necessary to separately use a member for adjusting the length as in the prior art.

  Further, since the length of the sling chain can be adjusted without having to lower the crane hook, the operation is easy.

In addition, since the chain slide part and the locking part are connected so as to be rotatable relative to each other, the curved surface is irregular or irregular, as in the case of a large number of small diameter long materials such as round bars and steel pipes. Even a workpiece having the outer peripheral shape can follow the irregular outer peripheral shape satisfactorily and give a sufficient squeezing force to squeeze and avoid the danger of the workpiece falling.

It is the front view (a) and side view (b) of the slide-type chain metal fitting for diaphragm | squeezing suspension by one Embodiment (Example 1) of this invention. It is a use condition figure when a workpiece | work is squeezed and suspended using the chain metal fitting of FIG. It is the front view (a) and side view (b) of the slide-type chain metal fitting for diaphragm | throttle suspension by other embodiment (Example 2) of this invention. It is the front view (a) and side view (b) of the slide-type chain metal fitting for stop-hanging by the modification (Example 3) of the embodiment shown in FIG. It is a use condition figure when a workpiece | work is squeezed and suspended using the chain metal fitting of FIG. It is the front view (a) and side view (b) of the slide-type chain metal fitting for diaphragm | squeezing suspension by other embodiment (Example 4) of this invention. FIG. 7 is a front view (a) and a side view (b) of a slide-type chain fitting for squeezing and squeezing according to a modification of the embodiment shown in FIG. It is the front view (a) and side view (b) of the slide-type chain metal fitting for suspension suspension by other embodiment (Example 6) of this invention. It is the front view (a) and side view (b) of the slide-type chain metal fitting for suspension suspension by other embodiment (Example 7) of this invention. It is a side view which shows the 90 degree rotation state of the chain metal fitting of FIG. It is the front view (a) and side view (b) of the slide-type chain metal fitting for suspension suspension by other embodiment (Example 8) of this invention. It is a side view which shows the 90 degree rotation state of the chain metal fitting of FIG. It is a use condition figure when many small diameter long materials are squeezed and suspended collectively using the chain metal fitting of FIG. It is the front view (a) and side view (b) of the slide-type chain metal fitting for suspension suspension by other embodiment (Example 9) of this invention. It is a use condition figure when many small diameter long materials are collectively drawn and suspended using the chain metal fitting of FIG. It is a use condition figure which shows the technique of the prior art which adjusts the length of a sling chain in the case of suspension by drawing.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. However, the present invention is not limited to these embodiments, and various modifications and changes can be made within the scope of the invention described in the claims. Needless to say, is acceptable.

  1 has a chain slide hole 11 through which a sling chain 3 (see FIG. 2) is slidably inserted at one end in the length direction, and at the other end. Is provided with a locking portion 12 that allows the length of the sling chain 3 to be adjusted by locking one horizontal link 3a.

  The chain slide hole 11 is shown in a circular shape in this embodiment, but its shape and size are not limited as long as the sling chain 3 can be slidably inserted.

  The locking portion 12 includes a vertical slot 121 that passes through the chain fitting 10 in the front-rear direction (the vertical direction in FIG. 1A), and a horizontal slot 122 that is orthogonal to the vertical slot 121 in a cross shape. In the front view (FIG. 1 (a)), it is observed as a groove that opens in a substantially cross shape, but the lateral slot 122 is formed to be inclined at a predetermined angle with respect to the length direction of the chain fitting 10, and A groove bottom 122a is provided without penetrating the chain fitting 10 in the front-rear direction (see FIG. 1B).

  The sling chain 3 is configured by alternately connecting horizontal links 3a and vertical links 3b having the same size and shape, and the longitudinal dimension of the horizontal slot 122 is slightly larger than the short diameter of the links 3a and 3b. The short dimension is slightly larger than the wire diameter of the links 3a and 3b, and the groove depth is smaller than the long diameter of the links 3a and 3b. The short dimension of the vertical slot 121 is also slightly larger than the wire diameter of the links 3a and 3b, and the long dimension is appropriately formed.

  An example of squeezing and hanging the workpiece 7 (column in this example) using this chain fitting 10 is shown in FIG. In this figure, parts / elements that are the same as or correspond to the parts / elements in FIG. 16 used to describe the prior art are denoted by the same reference numerals.

  As shown in FIG. 2, a coupling 2 is connected to a master link 1 connected to a crane hook (not shown), and a sling chain 3 is connected to the coupling 2 to squeeze the workpiece 7. The sling chain 3 is inserted into the chain slide hole 11 of the chain fitting 10 shown in FIG. 1 and wound around the work 7 so as to make one round. The horizontal slot 122 of the locking portion 12 of the chain fitting 10 has any horizontal link. 3a is locked and the length is adjusted.

  That is, one of the lateral links 3a of the sling chain 3 is inserted into the lateral slot 122 from the front side (FIG. 1A) where the lateral slot 122 is open in the locking portion 12 of the chain fitting 10, and the groove bottom 122a is inserted. Push until it hits. The upper half of the horizontal link 3a 'inserted and locked in the horizontal slot 122 protrudes from the horizontal slot 122, and this protrusion is shown in black in FIG. The vertical link 3 b connected to the lower side of the horizontal link 3 a is inserted into the vertical slot 121 of the locking portion 12.

  According to this embodiment, as described above, any one of the horizontal links 3a provided in the sling chain 3 every other is inserted and locked into the horizontal slot 122 of the locking portion 12 of the chain fitting 10. Thus, the length of the sling chain 3 can be easily adjusted. Since the chain fitting 10 is located close to the upper end of the work 7 and is at a relatively low position, the length can be adjusted smoothly without having to hang the crane hook.

  Further, in the state where one horizontal link 3a is inserted and locked in the horizontal slot 12 of the chain fitting 10, the sling chain 3 is not attached to the chain fitting 10 unless the horizontal link 3a is pulled up and separated from the horizontal slot 12. Since it does not move, a sufficient squeezing force can be applied to the workpiece 7 when squeezing and suspending, and the work can be performed safely without risk of the workpiece falling.

  In FIG. 2, the coupler is connected by passing a pin (not shown) of the coupler 8 through the link at the end of the sling chain. This is because the chain fitting 10 is removed from the sling chain 3 when the suspension work is not performed. It is intended to prevent it from falling off, and may have any shape and size that cannot be inserted through the chain slide hole 11 of the chain fitting 10, and therefore is not limited to the coupler 8, and is commonly used for this type of suspension device. Arbitrary parts such as round rings and bolt / nut assemblies can be used.

  Further, if a chain hooking coupler (having a hook that can be locked to the links 3a and 3b on the side opposite to the pin of the coupler 8) is used here, the sling chain 3 is placed at an arbitrary point above the chain fitting 10. By hooking the hook of the chain hooking coupler on any one of the links 3a or 3b, it is possible to prevent the sling chain 3 remaining from the chain fitting 10 from drooping excessively (see FIG. 13).

  FIG. 3 shows a slide-type chain fitting 20 for squeezing and hanging according to the second embodiment. The chain metal fitting 20 has a chain slide hole 21 through which the sling chain 3 is slidably inserted at one end in the length direction, and the sling chain 3 is elongated by engaging one horizontal link 3a at the other end. A locking portion 22 that can be adjusted is provided.

  The chain slide hole 21 is circular in this embodiment, but the shape and size thereof are not limited as long as the sling chain 3 can be slidably inserted.

  The locking portion 22 has a main body portion 221 that extends downward from the chain slide hole 21 and has a hook shape at the lower end thereof, so that one horizontal link 3 a can be fitted and accommodated between the main body portion 221 and the hook portion 222. A fitting portion 223 and a guide portion 224 for guiding the lateral link 3a to the fitting portion 223 are continuously formed in a state of being bent at a predetermined angle. Accordingly, the fitting portion 223 and the guide portion 224 are formed to have a groove width slightly larger than the wire diameter of the horizontal link 3a and the vertical link 3b having the same size and shape constituting the sling chain 3. Further, the groove width of the bent portion continuing from the guide portion 224 to the fitting portion 223 is slightly widened so that the horizontal link 3a can be moved smoothly (see FIG. 3B).

  When the chain 7 is used to squeeze and hang the workpiece 7, it can be performed in the same manner as described in the first embodiment and shown in FIG. That is, when the coupling 2 is connected to the master link 1 connected to a crane hook (not shown), and the sling chain 3 is connected to the coupling 2 and the work 7 is drawn and suspended, the chain of the chain fitting 20 After the sling chain 3 is inserted into the slide hole 21 and wound around the work 7 to make one round, one of the lateral links 3a is inserted into the guide portion 224 of the locking portion 22 of the chain fitting 20 and finally fitted. The length of the sling chain 3 is adjusted by accommodating and fitting the portion 223.

  According to this embodiment, as described above, any one of the lateral links 3a provided in the sling chain 3 every other is accommodated and fitted into the fitting portion 223 of the locking portion 22 of the chain fitting 20. By doing so, the length of the sling chain 3 can be easily adjusted. Since the chain fitting 20 is located close to the upper end of the work 7 and is at a relatively low position, the length can be adjusted smoothly without having to hang the crane hook.

  In addition, since the vertical link 3b that is connected to the horizontal link 3a in an orthogonal state cannot enter the fitting portion 223 of the chain bracket 20, in the state where one horizontal link 3a is housed and fitted in the fitting portion 223. The sling chain 3 does not move relative to the chain fitting 20 unless the lateral link 3a is pulled up and separated from the fitting portion 223 and the guide portion 224. Therefore, a sufficient squeezing force can be applied to the workpiece 7 when squeezing and suspending, and the work can be performed safely without risk of the workpiece falling. The protrusions 225 that are formed on both sides of the lower end of the locking portion 22 of the chain fitting 20 are symmetrical with respect to the posture of the vertical links 3b and 3b that are connected to both sides of the horizontal link 3a that is housed and fitted in the fitting portion 223. It helps to keep the fitting state of the horizontal link 3a stationary.

  FIG. 4 shows a slide-type chain fitting 20 'for suspending a diaphragm according to the third embodiment. This chain metal fitting 20 ′ is a modification of the chain metal fitting 20 (FIG. 3) of the second embodiment, and the through-hole direction of the chain slide hole 21 and the through-hole direction of the fitting portion 223 of the locking portion 22 and the guide portion 224. Are different in that they are in the same direction. The chain fitting 20 'according to this embodiment can be forged in one process and has manufacturing advantages. However, the configuration other than the above differences is the same as that of the second embodiment, and is the same as or corresponding to the second embodiment. Parts / elements to be assigned are denoted by the same reference numerals and description thereof is omitted.

  The usage and operational effects when the work 7 is drawn and hung using this chain fitting 20 'are the same as those in the third embodiment. The state of use in this case is shown in FIG. As already described with respect to the second embodiment, the coupling 2 is connected to the master link 1 connected to the crane hook (not shown), and the sling chain 3 is connected to the coupling 2 to squeeze the workpiece 7. In doing so, after the sling chain 3 is inserted into the chain slide hole 21 of the chain fitting 20 'and wound around the work 7 to make a substantially round, the lateral link 3a is guided to the engaging portion 22 of the chain fitting 20'. The length of the sling chain 3 is adjusted by inserting it into 224 and finally accommodating and fitting it into the fitting portion 223. In FIG. 5, the lateral link 3 a ′ formed by being housed and fitted in the fitting portion 223 of the chain metal fitting 20 ′ is shown in black.

  FIG. 6 shows a slide-type chain fitting 30 for squeezing a diaphragm according to the fourth embodiment. The chain fitting 30 has a chain slide hole 31 through which the sling chain 3 is slidably inserted at one end in the length direction, and the sling chain 3 is elongated by engaging one horizontal link 3a at the other end. A locking portion 22 that can be adjusted is provided.

  One end portion having the chain slide hole 31 is formed in a choker hook shape, and is provided with an opening 31a having a dimension slightly larger than the wire diameter of the horizontal link 3a and the vertical link 3b constituting the sling chain 3. Since the chain slide holes 11 and 21 of the chain fittings 10, 20, and 20 ′ according to the above-described embodiments have a closed shape having no opening, the sling chain 3 is passed through the chain slide holes 11 and 21, and then the tip ends. The set of the sling chain must be assembled by attaching the coupler 8 and the like (see FIGS. 2 and 5). However, in this embodiment, even after the set of the sling chain is assembled by attaching the coupler 8 etc. There exists an advantage which can be inserted in the chain slide hole 31 from the choker hook opening part 31a in the position. The shape and size of the chain slide hole 31 are not limited as long as the sling chain 3 can be slidably inserted therethrough.

  The locking portion 32 has the same configuration as the locking portion 22 in the chain fittings 20 and 20 ′ (FIGS. 3 and 4) of the second and third embodiments. That is, the locking portion 32 has a main body portion 321 extending below the chain slide hole 31 in a hook shape at the lower end, and a single horizontal link 3a is fitted and accommodated between the main body portion 321 and the hook portion 322. The fitting part 323 to be guided and the guide part 324 for guiding the lateral link 3a to the fitting part 323 are continuously formed in a state bent at a predetermined angle. Accordingly, the fitting portion 323 and the guide portion 324 are formed to have a groove width slightly larger than the wire diameter of the horizontal link 3a and the vertical link 3b constituting the sling chain 3. In the bent portion that continues from the guide portion 324 to the fitting portion 323, the groove width is slightly widened so that the movement of the lateral link 3a is performed smoothly (see FIG. 6B). In addition, the protrusions 325 formed on both sides of the lower end of the locking portion 32 stably stabilize the postures of the vertical links 3b and 3b connected to both sides of the horizontal link 3a accommodated and fitted in the fitting portion 323. It helps to keep the fitting state of the horizontal link 3a stationary.

  When the workpiece 7 is squeezed and suspended using the chain fitting 30, it can be performed in the same manner as described in the third embodiment and shown in FIG. In addition, since the operations and effects in that case are the same, description thereof will be omitted.

  FIG. 7 shows a slide-type chain fitting 30 ′ for hanging a diaphragm according to the fifth embodiment. This chain metal fitting 30 ′ is a modification of the chain metal fitting 30 (FIG. 6) of the fourth embodiment, and the direction of the through hole of the chain slide hole 31, the direction of the through hole of the fitting portion 323 of the locking portion 32, and the guide portion 324. Are different in that they are in the same direction. The chain fitting 30 'according to this embodiment can be forged in one process and has manufacturing advantages. However, the configuration other than the above differences is the same as that of the second embodiment, and is the same as or corresponding to the second embodiment. Parts / elements to be assigned are denoted by the same reference numerals and description thereof is omitted.

  When the work 7 is squeezed and hung using the chain fitting 30 ', it can be performed in the same manner as described in the third embodiment and shown in FIG. In addition, since the operations and effects in that case are the same, description thereof will be omitted.

  FIG. 8 shows a slide-type chain fitting 40 for squeezing and hanging according to the sixth embodiment. The chain fitting 40 has a chain slide hole 41 through which the sling chain 3 is slidably inserted at one end in the length direction, and the sling chain 3 is elongated by locking one horizontal link 3a at the other end. A locking portion 42 that can be adjusted is provided.

  One end portion having the chain slide hole 41 is formed in a choker hook shape similarly to the chain metal fitting 30 (FIG. 6) of the fourth embodiment, and from the wire diameters of the horizontal link 3a and the vertical link 3b constituting the sling chain 3 Since the opening 41a has a slightly larger size, it can be inserted into the chain slide hole 41 from the choker hook opening 41a at any position even after the coupler 8 or the like is attached and the set of sling chains is assembled. There are advantages you can do. The shape and size of the chain slide hole 41 are not limited as long as the sling chain 3 can be slidably inserted therethrough.

  The locking portion 42 has substantially the same configuration as the locking portion 12 in the chain fitting 10 (FIG. 1) of the first embodiment, and the chain fitting 40 is moved in the front-rear direction (the vertical direction in FIG. 8A). ) And a horizontal slot 422 that is orthogonal to the vertical slot 421 in a substantially cross shape. In the front view (FIG. 8A), it is observed as a groove that opens in a substantially cross shape, but the lateral slot 422 is formed to be inclined at a predetermined angle with respect to the length direction of the chain fitting 40, and It has a groove bottom 422a without penetrating the chain fitting 40 in the front-rear direction (see FIG. 8B). As in the first embodiment, the length of the sling chain 3 can be adjusted by inserting and locking any one of the horizontal links 3a '(see FIG. 2) of the sling chain 3 into the horizontal slot 422.

  FIG. 9 shows a slide-type chain fitting 50 for squeezing and hanging according to the seventh embodiment. In this chain fitting 50, the portion having the chain slide hole 11 of the chain fitting 10 of FIG. 1 (FIG. 1) and the locking portion 12 are formed as separate members and can be rotated within a range of 0 to 90 degrees. It has the structure connected to. That is, in this chain fitting 50, the chain slide part 51 having the chain slide hole 511 and the locking part 52 are rotatably connected within a range of 0 to 90 degrees via the connecting means 53.

  The locking portion 52 has substantially the same configuration as the locking portion 12 in the chain fitting 10 (FIG. 1) of the first embodiment, and the chain fitting 50 is arranged in the front-rear direction (the vertical direction in FIG. 9A). ) And a horizontal slot 522 orthogonal to the vertical slot 521 in a substantially cross shape. In the front view (FIG. 9A), it is observed as a groove that opens in a substantially cross shape, but the lateral slot 522 is formed to be inclined at a predetermined angle with respect to the length direction of the chain fitting 50, and It has a groove bottom 522a without penetrating the chain fitting 50 in the front-rear direction (see FIG. 9B). As in the first embodiment, the length of the sling chain 3 can be adjusted by inserting and locking any one of the horizontal links 3a (see FIG. 2) of the sling chain 3 into the horizontal slot 522.

  The connecting means 53 passes through the pin hole 513 of the connecting end portion 512 of the chain slide portion 51 and also has a pin hole of the connecting end portion 523 of the locking portion 52 formed in a bifurcated shape so as to sandwich the connecting end portion 512. A connection pin 531 to be inserted into 524 and a spring pin 533 to be fitted into the pin reduced diameter portion 532 to prevent the connection pin 531 from coming off.

  The chain slide part 51 and the locking part 52 are connected so as to be rotatable relative to each other with the connecting pin 531 as a rotation axis. Two stoppers 514 and 515 and a stopper contact 526 formed so as to protrude from the groove bottom 525 of the bifurcated coupling end 523 of the locking portion 52 so as to be able to come into contact with the stoppers 514 and 515 are engaged with the chain slide portion 51. The relative rotation angle with the stopper 52 is restricted to a range of 90 degrees.

  That is, when the stopper 514 is in contact with the stopper 526, the chain slide portion 51 and the locking portion 52 are connected in a state of extending in a substantially linear shape (FIG. 9B). In the figure, when the chain slide part 51 is rotated 90 degrees clockwise with respect to the locking part 52, this time, the stopper 515 comes into contact with the stopper 526 to restrict further rotation (FIG. 10). That is, the chain slide portion 51 and the locking portion 52 are relatively rotatable within a range of an angle θ (90 degrees in this embodiment). The angle range in which the relative rotation is possible can be freely changed by changing the position of the stopper 515. Further, if the stoppers 514 and 515 and the stopper 526 are omitted, the chain slide portion 51 and the locking portion 52 can freely rotate relative to each other without restriction of the angle.

  FIG. 11 shows a slide-type chain fitting 60 for suspending a diaphragm according to the eighth embodiment. In this chain fitting 60, the portion having the chain slide hole 21 of the chain fitting 20 (FIG. 3) of the second embodiment and the engaging portion 22 are formed as separate members and can be rotated within a range of 0 to 90 degrees. It has the structure connected to. That is, in this chain fitting 60, a chain slide portion 61 having a chain slide hole 611 and a locking portion 62 are rotatably connected within a range of 0 to 90 degrees via a connecting means 63.

  The locking portion 62 has substantially the same configuration as the locking portion 22 in the chain metal fitting 20 of the second embodiment, and one horizontal link 3a is fitted between the main body portion 621 and the hook portion 622. An accommodating fitting portion 623 and a guide portion 624 that guides the lateral link 3a to the fitting portion 623 are continuously formed in a state of being bent at a predetermined angle. In the bent portion that continues from the guide portion 624 to the fitting portion 623, the groove width is slightly widened so that the horizontal link 3a can be moved smoothly (see FIG. 11B). Similarly to the second embodiment, the length of the sling chain 3 can be adjusted by inserting and locking any one of the horizontal links 3a of the sling chain 3 to the fitting portion 623. Protrusions 625 formed on both sides of the lower end of the locking part 62 stabilize the postures of the vertical links 3b, 3b connected to both sides of the horizontal link 3a accommodated and fitted in the fitting part 623 symmetrically. The fitting state of the horizontal link 3a is kept stationary.

  The connecting means 63 has substantially the same structure as the connecting means 53 in the chain fitting 50 (FIG. 9) of the seventh embodiment, and penetrates the pin hole 613 of the connecting end 612 of the chain slide part 61. The connecting pin 631 inserted into the pin hole 624 of the connecting end portion 623 of the locking portion 62 formed in a bifurcated manner so as to sandwich the connecting end portion 612, and a pin for preventing the connecting pin 631 from coming off And a spring pin 633 fitted into the reduced diameter portion 632.

  The chain slide portion 61 and the locking portion 62 are connected so as to be relatively rotatable with a connecting pin 631 as a rotation axis, but are formed to protrude at an outer periphery of a substantially circular connecting end portion 612 of the chain slide portion 61 at an interval of 90 degrees. Two stoppers 614 and 615, and a stopper contact 629 that protrudes from the groove bottom 628 of the bifurcated connecting end 626 of the locking portion 62 so as to be able to contact these stoppers 614 and 615, are engaged with the chain slide portion 61. The relative rotation angle with the stopper 62 is restricted to a range of 90 degrees.

  That is, when the stopper 614 is in contact with the stopper 629, the chain slide portion 61 and the locking portion 62 are connected in a state of extending in a substantially linear shape (FIG. 11B). In the figure, when the chain slide portion 61 is rotated 90 degrees clockwise with respect to the locking portion 62, the stopper 615 comes in contact with the stopper 629 and restricts further rotation (FIG. 12). That is, the chain slide portion 61 and the locking portion 62 are relatively rotatable within a range of an angle θ (90 degrees in this embodiment). This angular range in which relative rotation is possible can be freely changed by changing the position of the stopper 615. If the stoppers 614 and 615 and the stopper 629 are omitted, the chain slide portion 61 and the locking portion 62 can freely rotate relative to each other without restriction of the angle.

  As described above, in the chain fitting 50 according to the seventh embodiment and the chain fitting 60 according to the eighth embodiment, the chain slide portions 51, 61 and the locking portions 52, 62 are within a predetermined angle θ range via the connecting means 53, 63. This embodiment can be used particularly suitably when a large number of small diameter long materials such as round bars and steel pipes are drawn and hung together.

  That is, when the chain fitting 60 of Example 8 is described as an example with reference to FIG. 13, such a workpiece 7 ′ has an uneven curved surface shape or an irregular outer peripheral shape. However, if an integrated chain bracket that extends linearly is used, the workpiece 7 'cannot be brought into close contact with the outer peripheral surface, and there is a risk that the workpiece 7 may fall without being provided with sufficient squeezing force. If this chain fitting 60 is used, the chain slide portion 61 and the locking portion 62 can freely rotate relative to each other within the range of the angle θ. Follow closely. In the example of FIG. 13, the chain slide portion 61 and the locking portion 62 are connected at an angle β (0 ≦ β ≦ θ) and follow the outer peripheral surface of the workpiece 7 ′. Therefore, it is possible to perform the suspension by applying a sufficient squeezing force, and the danger of the workpiece falling is avoided. This effect is also exhibited when the chain bracket 50 of the seventh embodiment is used.

  In FIG. 13, a chain hooking coupler 9 is attached to the tip of the sling chain 3 as a metal fitting for retaining, and this is hooked on a link at an arbitrary point as shown in the figure, thereby engaging the chain metal fitting 60. There is an advantage that the sling chain 3 remaining on the tip side from the stopped link can be prevented from drooping excessively (described above with reference to the first embodiment and FIG. 2).

  FIG. 14 shows a slide-type chain fitting 70 for squeezing and hanging according to the ninth embodiment. The chain fitting 70 has a configuration in which a chain slide portion 71 having a chain slide hole 711 is connected to a locking portion 72 by a link chain 73 so as to be relatively rotatable.

  A conventional coupler (see coupler 8 in FIG. 2) may be used for the chain slide portion 71. However, in the illustrated example, several types of chains with different wire diameters (for example, three types of wire diameters of 6 mm, 8 mm, and 10 mm) are used. A coupler body 712 that can also be used as a chain) has a pin hole 713 processed according to the wire diameter of the chain used, and a connecting pin 714 is attached to the pin hole 713 to prevent it from coming off with a spring pin 715. According to this, one kind of coupler main body 712 having a chain slide hole 711 having a size that allows the maximum applicable chain to be slidably inserted is forged, and the coupler main body 712 is used as a chain to be used. A pin hole 713 having a size corresponding to the chain used can be formed at a corresponding position, and a connecting pin 714 having a thickness (diameter) corresponding to the size of the pin hole 713 can be used. There is an advantage that can be simplified.

  The locking portion 72 has substantially the same configuration as the locking portion 22 of the chain fitting 20 (FIG. 3) of the second embodiment, and one horizontal link is provided between the main body portion 721 and the hook portion 722. A fitting portion 723 capable of fitting and accommodating 3a and a guide portion 724 for guiding the lateral link 3a to the fitting portion 723 are continuously formed in a state of being bent at a predetermined angle. In the bent portion that continues from the guide portion 724 to the fitting portion 723, the groove width is slightly widened so that the movement of the lateral link 3a is performed smoothly (see FIG. 14A). Similarly to the second embodiment, the length of the sling chain 3 can be adjusted by inserting and locking any one of the lateral links 3a of the sling chain 3 to the fitting portion 723. Protrusions 725 projecting on both sides of the lower end of the locking portion 72 stabilize the postures of the vertical links 3b and 3b connected to both sides of the horizontal link 3a accommodated and fitted in the fitting portion 723 symmetrically. The fitting state of the horizontal link 3a is kept stationary.

  The link chain 73 is formed by connecting an arbitrary number of links. One end of the link 731 is connected to the connecting pin 712 of the chain slide part 71, and the other end link 732 is connected to the connecting pin 726 of the locking part 72. As a result, the chain slide portion 71 and the locking portion 72 are connected to each other so as to be relatively rotatable. The number of links constituting the link chain 73 is arbitrary, but it is preferable that the number of links is an odd number so that the surface of the chain slide portion 71 and the back surface of the main body portion 721 of the locking portion 72 can be brought into close contact with the outer periphery of the workpiece. Generally, it is preferable to use 3 links (shown) or 5 links.

  In this embodiment, as in the case of the chain fittings 50 and 60 of the seventh and eighth embodiments (FIGS. 9 and 11), the chain slide portion 71 and the locking portion 72 are configured to be relatively rotatable via a link chain. Therefore, it can be particularly suitably used when a large number of small diameter long materials such as round bars and steel pipes are drawn and suspended together. That is, as shown in FIG. 15, the chain slide portion 71 and the locking portion 72 can freely rotate relative to each other, so that they can follow the irregular outer peripheral surface of the work 7 'well and closely contact. Furthermore, according to this embodiment, since the link chain 73 is located in the middle part of the chain fitting 70, the followability to the irregular outer peripheral surface of the work 7 'is further improved. Therefore, the squeezing force on the workpiece is further increased, and the danger of the workpiece falling can be avoided.

DESCRIPTION OF SYMBOLS 1 Master link 2 Coupling 3 Sling chain 3a Lateral link (3a 'Lateral link neglected in the chain metal fitting of this invention)
3b Longitudinal link 7, 7 'Work piece 8 Coupler 9 Coupler with chain hook 10 Slide type chain fitting for drawing suspension (product of the present invention)
11 Chain slide hole 12 Locking part 121 Vertical slot 122 Horizontal slot 122a Slot bottom 20, 20 'of horizontal slot
21 Chain slide hole 22 Locking part 221 Main body part 222 Hook part 223 Fitting part 224 Guide part 225 Projection part 30, 30 'Sliding chain metal fitting for drawing suspension (product of the present invention)
31 Chain slide hole 31a Opening portion 32 Locking portion 321 Main body portion 322 Hook portion 323 Fitting portion 324 Guide portion 325 Projection portion 40 Slide type chain fitting for drawing suspension (product of the present invention)
41 Chain slide hole 41a Opening portion 42 Locking portion 421 Vertical slot 422 Horizontal slot 422a Horizontal slot groove bottom 423 Fitting portion 424 Guide portion 425 Projection portion 50 Slide-type chain fitting for diaphragm suspension (product of the present invention)
51 Chain Slide Portion 511 Chain Slide Hole 512 Connection End 513 Pin Hole 514, 515 Stopper 52 Locking Portion 521 Vertical Slot 522 Horizontal Slot 522a Slot Bottom of Horizontal Slot 60 Slide Type Chain Fitting for Drawing Hanging (Product of the Present Invention)
61 Chain slide portion 611 Chain slide hole 612 Connection end portion 613 Pin hole 614, 615 Stopper 62 Locking portion 621 Body portion 622 Hook portion 623 Fitting portion 624 Guide portion 625 Projection portion 626 Connection end portion 627 Pin hole 628 Groove bottom 629 70 per stopper Slide type chain bracket for hanging suspension (product of the present invention)
71 Chain slide portion 711 Chain slide hole 712 Connection pin 72 Locking portion 721 Body portion 722 Hook portion 723 Fitting portion 724 Guide portion 725 Projection portion 726 Connection pin

Claims (2)

A slide-type chain fitting used to squeeze and hang a workpiece with a sling chain suspended on a crane hook. The chain slide hole allows the sling chain to be slidably inserted, and the sling chain inserted into the chain slide hole. The chain slide part having a chain slide hole and the lock part are relatively positioned. A slide-type chain fitting for hanging a diaphragm characterized by being connected rotatably . Two stoppers that are formed to protrude from the connecting end of the chain slide portion at a predetermined angle can come into contact with stoppers formed at the connecting end of the locking portion, and the chain slide portion and the locking portion Is characterized in that it is relatively rotatable within a predetermined angular range between a first relative position where one stopper abuts against the stopper and a second relative position where the other stopper abuts against the stopper. The sliding chain bracket for suspending a diaphragm according to claim 1.

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