Lifting appliance

Abstract

The utility model discloses a lifting appliance, which belongs to the technical field of lifting and comprises a lifting body and a lifting ring. The hoisting body is provided with a jacking mechanism and a power mechanism; the jacking mechanism comprises an opening and closing boosting block and a plurality of locking blocks; a containing cavity is formed in the lower end face of the hoisting body, and a plurality of locking holes are formed in the side wall of the containing cavity. The opening and closing boosting block and the locking block are both located in the containing cavity, and the opening and closing boosting block can move up and down relative to the containing cavity. The locking block corresponds to the locking hole, partially extends into the locking hole and can slide relative to the locking hole; an inclined plane is arranged at the position, corresponding to the locking block, of the opening and closing boosting block, and the locking block abuts against the inclined plane; the power mechanism drives the opening and closing boosting block to move upwards, and when the opening and closing boosting block is driven to move upwards, the locking block can be pushed to partially stretch out of the hoisting body to be attached to and locked with an inner hole of a workpiece. The locking block is pushed by the opening and closing boosting block to extend out of the hoisting body, so that the locking with a workpiece is realized; operation is convenient, procedures are smooth, and machining efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to hoisting technical field, concretely relates to a lifting appliance. BACKGROUND

[0002] Generally need hoisting to work piece in equipment assembly, production process, the present technique commonly uses thread lifting ring, steel wire rope binding, lifting belt binding etc. to hoist, and it is time -consuming and laborious to disassemble. In the tire production process, the thread block is hoisted by using the thread lifting ring, in order to avoid the thread hole of the thread block from being damaged due to long-term use, a steel thread sleeve is usually installed to protect it. The steel thread sleeve may rotate in the thread block, affecting the assembly accuracy of the thread block. The current control method is to add a compression screw or a cylindrical pin to the side of the thread sleeve to prevent the thread sleeve from rotating in the thread block by damaging the thread. However, the above-mentioned improvement method needs to damage the structure of the thread sleeve and the thread block after the thread sleeve is inserted, which is complicated and irreversible, and difficult to replace later. SUMMARY

[0003] To solve the problems in the prior art, the utility model provides a lifting appliance which is convenient to operate and efficient.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] The utility model provides a lifting appliance, which comprises a lifting body and a lifting ring.

[0006] The tightening mechanism comprises an opening and closing assisting block and a plurality of locking blocks. The lower end surface of the lifting body is provided with a receiving cavity, and the side wall of the receiving cavity is provided with a plurality of locking holes. The opening and closing assisting block and the locking block are located in the receiving cavity, and the opening and closing assisting block can move up and down relative to the receiving cavity. The locking block corresponds to the locking hole, and the locking block partially extends into the locking hole and can slide relative to the locking hole. The position corresponding to the locking block of the opening and closing assisting block is provided with an inclined surface, and the locking block abuts against the inclined surface.

[0007] When the power mechanism drives the opening and closing assisting block to move, it can push the locking block so that part of the locking block protrudes out of the lifting body and is attached to and locked with the inner hole of the workpiece.

[0008] In the above-mentioned lifting appliance, the lifting body is a cylinder, and the plurality of locking holes are evenly distributed in the circumference of the lifting body.

[0009] And / or, the number of locking blocks is 2-6.

[0010] And / or, the side surface of the locking block away from the opening and closing assisting block is provided with a plurality of anti-skid protrusions.

[0011] In the lifting appliance, the inclined surface is recessed in the outer side of the opening and closing boost block to form a sliding groove; a sliding block is arranged in the sliding groove and connected with the locking block to move synchronously.

[0012] In the lifting appliance, a limiting part is arranged on one or both groove walls of the sliding groove to limit the sliding block to avoid the sliding block from sliding out of the groove opening.

[0013] In the lifting appliance, an opening is arranged at one end of the sliding groove, and a limiting block is arranged at the opening.

[0014] In the lifting appliance, the opening is arranged at the upper end of the sliding groove.

[0015] In the lifting appliance, the power mechanism comprises a first locking rod and a second locking rod.

[0016] A first driving threaded hole is arranged on the upper end surface of the lifting body and communicates with the accommodating cavity; the first locking rod is screwed and combined with the first driving threaded hole.

[0017] A second driving threaded hole is arranged on the lower end surface of the first locking rod, the upper end of the second locking rod is screwed and combined with the second driving threaded hole, the second locking rod extends into the accommodating cavity and is rotationally connected with the opening and closing boost block, the second locking rod moves up and down synchronously with the opening and closing boost block and can rotate relatively.

[0018] In the lifting appliance, the threads of the first locking rod and the second locking rod are opposite.

[0019] In the lifting appliance, a connecting hole is arranged in the center of the opening and closing boost block and penetrates the upper end surface and the lower end surface of the opening and closing boost block; the second locking rod is located in the connecting hole, and a limiting table is arranged on the lower end of the second locking rod and supports the lower side of the opening and closing boost block.

[0020] In the lifting appliance, a disc spring is arranged between the first locking rod and the lifting body or between the first locking rod and the lifting ring.

[0021] The lifting appliance has the following beneficial effects:

[0022] The tightening mechanism of the lifting appliance comprises the opening and closing boost block and a plurality of locking blocks; the opening and closing boost block is used to push the locking blocks to extend out of the lifting body to realize locking with the workpiece; the lifting body can be directly inserted into the inner hole of the workpiece to quickly realize the locking of the lifting appliance, the operation is convenient, the process is smooth, and the machining efficiency is high.

[0023] The structure of the limiting block, the second locking rod, the disc spring, the sliding block and other components is simple, and the cost is low.

[0024] The lifting appliance is installed more quickly, and does not need to rely on long-time screwing of bolts or binding of lifting belts, but can be quickly installed and fixed by relying on the self-tightening mechanism, can be repeatedly disassembled, and is convenient for replacement of the tight-ening mechanism in the later period.

[0025] The lifting hole of the workpiece has low precision requirement, high machining efficiency and saved machining cost. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic view of the overall structure of an embodiment of the lifting appliance of the utility model;

[0027] Figure 2 It is Figure 1 It is a sectional view of the A-A section.

[0028] In the drawing:

[0029] 1-limiting block, 2-second locking rod, 3-lifting ring, 4-lifting body, 5-disc spring, 6-sliding block, 7-first locking rod, 8-opening and closing boost block, 9-locking block, 10-inclined surface, 11-opening, 12-receiving cavity, 13-second driving threaded hole, 14-first driving threaded hole, 15-locking hole, 16-connection hole, 17-anti-skid protrusion, 18-limiting part. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in combination with the drawings.

[0031] Please refer to Figure 1 and Figure 2 , an embodiment of the lifting appliance provided by the utility model, including lifting body 4 and lifting ring 3, lifting ring 3 is connected with lifting body 4, and both synchronous lifting;Wherein, lifting ring 3 is used for connecting hoisting equipment, lifting body 4 is equipped with tight-ening mechanism and power mechanism, and the stable and reliable connection of lifting appliance and workpiece is realized through the power mechanism, and the safe operating environment is provided for the hoisting of workpiece.

[0032] The lower end face of lifting body 4 is provided with receiving cavity 12, and the side wall of receiving cavity 12 is provided with a plurality of locking holes 15, locking holes 15 penetrate the side wall of receiving cavity 12, and locking holes 15 are communicated with the outside space of lifting body 4. Lifting body 4 can be a cylinder, at this time, a plurality of locking holes 15 are distributed uniformly in the circumferential direction of lifting body 4;Lifting body 4 can also be a polyhedron, for example, rectangular body, and a plurality of locking holes 15 are symmetrically distributed on each side of lifting body 4.

[0033] The top-tightening mechanism comprises an opening and closing boost block 8 and a plurality of locking blocks 9. The opening and closing boost block 8 is located in the accommodating cavity 12 and can move up and down relative to the accommodating cavity 12. The locking blocks 9 are located in the accommodating cavity 12 and correspond to the locking holes 15 one by one. The locking blocks 9 partially extend into the locking holes 15 and can slide relative to the locking holes 15. The locking blocks 9 can slide out of the hoisting body 4 from the locking holes 15 or slide into the hoisting body 4.

[0034] The position corresponding to the opening and closing boost block 8 and the locking block 9 is provided with an inclined surface 10, and the locking block 9 abuts against the inclined surface 10. In the direction perpendicular to the movement direction of the opening and closing boost block 8, one end of the inclined surface 10 is inclined to the side close to the locking hole 15, and the other end is relatively far away from the locking hole 15. In this way, when the opening and closing boost block 8 moves up or down, the inclined surface 10 can push the locking block 9 to make the locking block 9 partially extend out of the hoisting body 4 and fit and lock with the inner hole of the workpiece.

[0035] The opening and closing boost block 8 is a tapered cone with one end large and one end small, or the outer contour of the opening and closing boost block 8 is adapted to the inner contour of the accommodating cavity 12, as long as the opening and closing boost block 8 can move up and down relative to the accommodating cavity 12. The lower end of the inclined surface 10 is closer to the locking hole 15, or the upper end is closer to the locking hole 15, both of which are possible. When the lower end of the inclined surface 10 is closer to the locking hole 15, the opening and closing boost block 8 pushes the locking block 9 to lock when moving up, as shown in FIG. 2; when the upper end of the inclined surface 10 is closer to the locking hole 15, the opening and closing boost block 8 can push the locking block 9 to lock only when moving down. Figure 2

[0036] Further, the inclined surface 10 is recessed in the outer side surface of the opening and closing boost block 8 to form a sliding groove. A sliding block 6 is slidably arranged in the sliding groove. The sliding block 6 is connected with the locking block 9 and moves synchronously. The sliding block 6 and the locking block 9 can be an integral structure, or they can be threadedly connected as shown in FIG. 3. Figure 2 A limiting portion 18 is arranged on one side wall or both side walls of the sliding groove. The limiting portion 18 is located at the slot opening of the sliding groove and limits the sliding block 6 to avoid sliding out of the slot opening. According to the position of the limiting portion 18 on the sliding groove, the cross section of the sliding groove is inverted T-shaped or L-shaped. When the limiting portion 18 is arranged on both side walls, the slot opening between the two limiting portions 18 is in an open state. At this time, the cross section of the sliding groove is inverted T-shaped, and the local part of the sliding block 6 extends out of the sliding groove and is connected with the locking block 9. When the limiting portion 18 is arranged on one side wall, the slot opening between the limiting portion 18 and the other side wall is open. At this time, the sliding groove is L-shaped.

[0037] ​In order to facilitate the processing of the sliding slot, one end of the sliding slot is provided with an opening 11, preferably, the opening 11 is located at the upper end of the sliding slot. The opening 11 is blocked by the limiting block 1 to prevent the sliding block 6 from being pulled out of the sliding slot from the opening 11. Specifically, the limiting block 1 is threadedly connected with the opening and closing assisting block 8. In this way, it is convenient to disassemble and assemble. When installing the clamping mechanism, first, the sliding block 6 is connected with the locking block 9, then the sliding block 6 is put into the sliding slot, and finally the limiting block 1 is connected with the opening and closing assisting block 8, and the assembly is completed. When the opening and closing assisting block 8 moves upward, the sliding block 6 pushes the locking block 9 to move and partially protrude out of the lifting body 4; when the opening and closing assisting block 8 moves downward, the sliding block 6 pulls the locking block 9 to retract into the lifting body 4, thereby releasing the locking with the workpiece.

[0038] The number of locking blocks 9 and locking holes 15 can be set according to the needs, for example, 2-6 blocks; preferably, the side surface of the opening and closing assisting block 8 away from the locking block 9 is provided with a plurality of anti-skid protrusions 17, and the plurality of anti-skid protrusions 17 are distributed in a tooth shape along the length direction of the lifting body 4.

[0039] The power mechanism can drive the opening and closing assisting block 8 to move upward and downward; as an embodiment of the power mechanism, the power mechanism includes a first locking rod 7 and a second locking rod 2. The upper end surface of the lifting body 4 is processed with a first driving threaded hole 14, and the first driving threaded hole 14 is communicated with the accommodating cavity 12. The first locking rod 7 is provided with an external thread and is threadedly combined with the first driving threaded hole 14. The lower end surface of the first locking rod 7 is provided with a second driving threaded hole 13, and the upper end of the second locking rod 2 is provided with an external thread and is threadedly combined with the second driving threaded hole 13. The second locking rod 2 extends into the accommodating cavity 12 and is rotationally connected with the opening and closing assisting block 8, and the two can move upward and downward synchronously, but can rotate relatively. For example, the rotation directions of the first locking rod 7 and the second locking rod 2 are opposite, the thread of the first locking rod 7 is right-handed, and the thread of the second locking rod 2 is left-handed. When the first locking rod 7 rotates counterclockwise to rotate out, the second locking rod 2 has a tendency to rotate in left-handed, and is driven to rise by the first locking rod 7, and at the same time, the connection failure of the second locking rod 2 and the first locking rod 7 can be avoided.

[0040] Preferably, the opening and closing assisting block 8 is centrally provided with a connecting hole 16, and the connecting hole 16 penetrates the upper end surface and the lower end surface of the opening and closing assisting block 8; the second locking rod 2 is threadedly connected with the first locking rod 7 after penetrating the connecting hole 16 from bottom to top. The lower end of the second locking rod 2 is provided with a limiting table which is supported on the lower side of the opening and closing assisting block 8, so as to drive the opening and closing assisting block 8 to move upward together.

[0041] In order to facilitate the operation of the first locking rod 7, the lifting ring 3 can be rotationally connected with the lifting body 4; when the locking operation is performed, the lifting ring 3 avoids the operation area; or the distance between the lifting ring 3 and the first locking rod 7 is large enough to provide sufficient operation space for the operation tool; or the lifting ring 3 has a certain elastic deformation amount, which can be deformed to avoid the operation space during the locking operation.

[0042] Before hoisting, the workpiece is locked with the lifting appliance; the specific operation is that the first locking rod 7 is rotated, the first locking rod 7 goes up relative to the lifting body 4, at the same time, the second locking rod 2 is driven to go up, the opening and closing boost block 8 pushes the locking block 9 to slide outward during the process of the second locking rod 12 going up until the local outer part of the locking block 9 extends out of the lifting body 4, and the workpiece is locked.

[0043] During hoisting, the locking state of the lifting appliance and the workpiece is maintained.

[0044] After hoisting is completed, the workpiece is unlocked with the lifting appliance; the specific operation is that the first locking rod 7 is rotated, thereby the first locking rod 7, the second locking rod 2 and the opening and closing boost block 8 go down, the locking block 9 is driven to retract into the lifting body 4, and the locking of the lifting appliance and the workpiece is quickly released.

[0045] The lifting appliance is further provided with a disc spring 5, the disc spring 5 is located between the first locking rod 7 and the lifting body 4 or between the first locking rod 7 and the lifting ring 3, the elastic force of the disc spring 5 is utilized, and the function of limiting the rotation of the first locking rod 7 is achieved.

[0046] The above only describes the preferred embodiments of the utility model and is not used for limiting the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A lifting harness comprising a lifting body (4) and a lifting loop (3); characterized in that, The lifting body (4) is provided with a tightening mechanism and a power mechanism; The tightening mechanism comprises an opening and closing boost block (8) and a plurality of locking blocks (9); the lower end surface of the lifting body (4) is provided with a containing cavity (12), the side wall of the containing cavity (12) is provided with a plurality of locking holes (15); the opening and closing boost block (8) and the locking block (9) are located in the containing cavity (12), the opening and closing boost block (8) can move up and down relative to the containing cavity (12); the locking block (9) corresponds to the locking hole (15), the locking block (9) partially extends into the locking hole (15) and can slide relative to the locking hole (15); the opening and closing boost block (8) is provided with an inclined surface (10) at a position corresponding to the locking block (9), and the locking block (9) abuts against the inclined surface (10). When the power mechanism drives the opening and closing boost block (8) to move, the locking block (9) can be pushed to make part of the locking block (9) protrude from the lifting body (4) and be in close contact with the inner hole of the workpiece.

2. A lifting harness according to claim 1, characterised in that The lifting body (4) is a cylinder, and the plurality of locking holes (15) are uniformly distributed in the circumference of the lifting body (4); And / or, the number of locking blocks (9) is 2-6; And / or, the locking block (9) is provided with a plurality of anti-skid protrusions (17) on the side surface away from the opening and closing boost block (8).

3. The sling of claim 1 wherein, The inclined surface (10) is recessed in the outer side surface of the opening and closing boost block (8) to form a sliding groove; a sliding block (6) is slidably arranged in the sliding groove, the sliding block (6) is connected with the locking block (9) and moves synchronously.

4. A lifting harness according to claim 3, wherein, A limiting portion (18) is arranged on one side groove wall or both groove walls of the sliding groove to limit the sliding block (6) to avoid the sliding block (6) from sliding out of the groove opening of the sliding groove.

5. A lifting harness according to claim 4, wherein, An opening (11) is arranged at one end of the sliding groove, and a limiting block (1) is arranged to block the opening (11).

6. A lifting harness according to claim 5, wherein, The opening (11) is located at the upper end of the sliding groove.

7. The lifting harness of claim 1, wherein, The power mechanism comprises a first locking rod (7) and a second locking rod (2); A first driving threaded hole (14) is machined on the upper end surface of the lifting body (4), the first driving threaded hole (14) communicates with the containing cavity (12); the first locking rod (7) is threadedly screwed with the first driving threaded hole (14) and connected therewith; A second driving threaded hole (13) is arranged on the lower end surface of the first locking rod (7), the upper end of the second locking rod (2) is screwed with the second driving threaded hole (13) and connected therewith, the second locking rod (2) extends into the containing cavity (12) and is rotationally connected with the opening and closing boost block (8), the second locking rod (2) moves up and down synchronously with the opening and closing boost block (8) and can rotate relative thereto.

8. A lifting harness according to claim 7, wherein, The threads of the first locking rod (7) and the second locking rod (2) are opposite in rotation direction.

9. The lifting harness of claim 7, wherein, The opening and closing boost block (8) is centrally provided with a connecting hole (16) penetrating the upper end face and the lower end face of the opening and closing boost block (8); the second locking rod (2) is located in the connecting hole (16), and the lower end of the second locking rod (2) is provided with a limiting table supported on the lower side of the opening and closing boost block (8).

10. The lifting harness of claim 7, wherein, A disc spring (5) is further included, which is located between the first locking rod (7) and the hoisting body (4) or between the first locking rod (7) and the lifting ring (3).

Images