Pulley device for small sling

Abstract

The utility model relates to the technical field of sling devices, and discloses a pulley device for a small sling, which comprises a pulley and a support shaft sleeved on the inner side of the middle of the pulley, a first support frame is sleeved on the outer side of the pulley, and clamping grooves are arranged in the front end and the rear end of one side of the first support frame. Two clamping grooves are formed in the front end face and the rear end face of one side of the first supporting frame, the two clamping grooves are connected with the ends of the two ends of a supporting shaft in a clamped mode correspondingly, a handle is fixedly connected to the end face of one end of the supporting shaft, semi-open grooves are formed in the tops of the front end and the rear end of one side of the first supporting frame correspondingly, the two semi-open grooves communicate with the two clamping groove spaces correspondingly, and elastic limiting assemblies are arranged in the two semi-open grooves in a sleeved mode correspondingly. According to the multifunctional pulley device, the pulley, the first supporting frame, the supporting shaft and the second supporting frame are assembled to form the multifunctional pulley device, the structure is simple, the occupied area is small, and in the follow-up using process, operation stability of a sling can be guaranteed to a large extent, and meanwhile operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sling devices, in particular to a pulley device for a small sling. Background Technique

[0002] A sling is a rope used for hoisting, usually made of steel wire rope or synthetic fiber, and is also known as a hoisting rope or a rope buckle. The sling is mainly used to connect the crane hook and the hoisted equipment, and is an important part of the hoisting operation. The types of slings include two categories: metal slings and synthetic fiber slings. Among them, metal slings include wire rope slings and chain slings, while synthetic fiber slings are ropes and belt slings produced from materials such as nylon, polypropylene, polyester, and high-strength high-modulus polyethylene fibers.

[0003] At present, metal slings are mainly made of steel wire ropes or chains, with high load-bearing capacity and durability, and are suitable for most hoisting operations. However, due to the large weight of metal slings, the problem of time-consuming and laborious is very obvious in the case of manual operation, and there are certain safety hazards, which need to be further improved. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a pulley device for a small sling, which solves the problems put forward in the above background technique.

[0005] The utility model provides the following technical scheme: a pulley device for a small sling, including a pulley and a support shaft sleeved inside the middle part of the pulley. A first support frame is sleeved outside the pulley. Card slot positions are respectively opened at the front and rear ends inside one side of the first support frame, and the two card slots are respectively clamped with the two end heads of the support shaft. A handle is fixedly connected to one end face of the support shaft;

[0006] Semi-open slots are respectively opened at the tops of the front and rear ends inside one side of the first support frame. The two semi-open slots are respectively communicated with the two card slots in space. Elastic limiting components are sleeved inside the two semi-open slots. One side structure of the elastic limiting component can penetrate through the semi-open slot and be sleeved into the corresponding card slot. A second support frame is connected to the other side of the first support frame.

[0007] The two elastic limit assemblies each include an L-shaped pressure plate, an auxiliary guide rod, and a buffer spring. A constraint sleeve is opened in the middle of the front and rear ends of the first support frame. The two constraint sleeves are arranged in a spatial communication with the two semi-open grooves in a one-to-one manner. The other side of the L-shaped pressure plate is clamped in the corresponding semi-open groove, and one side of the L-shaped pressure plate passes through the semi-open groove and fits with the surface of the corresponding end of the support shaft for limitation. The two ends of the auxiliary guide rod are respectively fixedly connected to the surface of the other side of the L-shaped pressure plate and clamped in the inside of the constraint sleeve. The two ends of the buffer spring are respectively fixedly connected to the surface of the other side of the L-shaped pressure plate and the corresponding inner wall of the semi-open groove. The elastic limit assembly is used to cover and limit the fitting point of the first support frame and the end of the support shaft.

[0008] Preferably, the other side surface of the first support frame and the surface of one side of the second support frame are respectively fixedly connected with a first sleeve and a second sleeve, the first sleeve is aligned with the second sleeve and is jointly clamped with a first long bolt, and a nut is threadedly connected to the bottom surface of the first long bolt.

[0009] Preferably, mounting holes are provided in the front and rear ends of the other side of the second support frame, and the first support frame can be rotated and adjusted relative to the second support frame under the support of the hinge structure formed by the first long bolt, the second sleeve and the first sleeve.

[0010] Selectedly, a plurality of limit grooves are opened on the surface of one end of the support shaft, and the plurality of limit grooves are distributed along the circumference of the end head of one end of the support shaft. An anti-motion block is fixedly connected to the bottom of one side of the L-shaped pressure plate arranged at the front end of the first support frame. The anti-motion block can be limited by the corresponding limit groove set, thereby providing insurance conditions for the stability of the use of the elastic limit assembly.

[0011] Preferably, a slide groove is provided in the front end structure of one side of the first support frame, and the slide groove is communicated with a semi-open groove space arranged at the front end of the first support frame, and a limiting screw is installed inside the slide groove, and a threaded hole is provided in the other side of the L-shaped pressure plate arranged at the front end of the first support frame, and one end of the limiting screw can pass through the slide groove and be threadedly connected in the corresponding threaded hole, and the slide groove is used as a clearance space, and the threaded hole arranged in the L-shaped pressure plate is used to limit the assembly and protect the L-shaped pressure plate and the first support frame without interfering with the movement of the L-shaped pressure plate.

[0012] The middle part of the front end of the first support frame is fixedly connected with a constraint sleeve block and a wiring sleeve block respectively, and the interior of the constraint sleeve block is sleeved with a second long bolt. One side of the front end of the pulley is provided with an assembly hole that can be clamped with one end of the second long bolt. The second long bolt can be connected with the assembly hole with the support of the constraint sleeve block to provide limited protection for the pulley and the first support frame.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model assembles a multifunctional pulley device through the arranged pulleys, first support frames, support shafts and second support frames. The structure is simple, occupies a small area, and can ensure the stability of the sling operation to a large extent and is convenient to operate during subsequent use.

[0015] 2. The first sleeve, first long bolt, second sleeve and nut set in the utility model are used as a transition connection structure, so that while ensuring the stable connection of the first support frame and the second support frame, the pulley main body formed by the pulley and the first support frame can be modularly repaired and replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front view schematic diagram of the structure of the utility model;

[0017] Figure 2 is a top view schematic diagram of the structure of the utility model;

[0018] Figure 3 is a partial cross-sectional view schematic diagram of the structure of the utility model;

[0019] Figure 4 is the structure of the utility model Figure 1 an enlarged schematic diagram of part A in;

[0020] Figure 5 is the structure of the utility model Figure 2 an enlarged schematic diagram of part B in.

[0021] In the figure: 1. Pulley; 2. Support shaft; 3. First support frame; 4. Second support frame; 5. Semi-open slot; 6. Elastic limit component; 61. L-shaped pressing plate; 62. Auxiliary guide rod; 63. Buffer spring; 7. Chute; 8. Limit screw; 9. Anti-moving block; 10. First sleeve; 11. Second sleeve; 12. First long bolt; 13. Nut; 14. Handle; 15. Constraint sleeve block; 16. Second long bolt; 17. Wiring sleeve block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5, a pulley device for a small sling, comprising a pulley 1, a support shaft 2 sleeved inside the middle part of the pulley 1. A first support frame 3 is sleeved outside the pulley 1. Clamping grooves are respectively formed in the front and rear ends inside one side of the first support frame 3, and the two clamping grooves are respectively clamped with the two end heads of the support shaft 2. A handle 14 is fixedly connected to one end face of the support shaft 2;

[0024] Semi-open slots 5 are respectively formed in the tops inside the front and rear ends of one side of the first support frame 3. The two semi-open slots 5 are respectively in spatial communication with the two clamping grooves. Elastic limit components 6 are sleeved inside the two semi-open slots 5. One side structure of the elastic limit component 6 can penetrate through the semi-open slot 5 and be sleeved into the corresponding clamping groove;

[0025] The two elastic limit components 6 both include an L-shaped pressing plate 61, an auxiliary guide rod 62, and a buffer spring 63. Constraint sleeve blocks 15 are respectively formed in the middle parts inside the front and rear ends of the first support frame 3. The two constraint sleeve blocks 15 are arranged in spatial communication with the two semi-open slots 5 in one-to-one correspondence. The other side of the L-shaped pressing plate 61 is clamped inside the corresponding semi-open slot 5. One side of the L-shaped pressing plate 61 penetrates through the semi-open slot 5 and is attached and limited to the surface of the corresponding end head of the support shaft 2. The two ends of the auxiliary guide rod 62 are respectively fixedly connected to the surface of the other side of the L-shaped pressing plate 61 and clamped inside the constraint sleeve block 15. The two ends of the buffer spring 63 are respectively fixedly connected to the surface of the other side of the L-shaped pressing plate 61 and the inner wall of the corresponding semi-open slot 5. The elastic limit component 6 is used to cover and limit the sleeve joint between the first support frame 3 and the end head of the support shaft 2 for protection;

[0026] A second support frame 4 is connected to the other side of the first support frame 3. A first sleeve 10 and a second sleeve 11 are respectively fixedly connected to the surface of the other side of the first support frame 3 and the surface of one side of the second support frame 4. The first sleeve 10 and the second sleeve 11 are aligned and jointly clamped with a first long bolt 12. A nut 13 is threadedly connected to the bottom surface of the first long bolt 12. Mounting holes are respectively formed in the front and rear ends inside the other side of the second support frame 4. The first support frame 3 can be rotationally adjusted relative to the second support frame 4 under the support of the hinge structure formed by the first long bolt 12, the second sleeve 11, and the first sleeve 10;

[0027] The surface of one end of the support shaft 2 is provided with a plurality of limit grooves, and the plurality of limit grooves are distributed along the circumference of the end head of one end of the support shaft 2. An anti-movement block 9 is fixedly connected to the bottom of one side of the L-shaped pressure plate 61 arranged at the front end of the first support frame 3, and the anti-movement block 9 can be limited by the corresponding limit groove set, thereby providing insurance conditions for the stability of the use of the elastic limit assembly 6. A sliding groove 7 is provided on the front end structure of one side of the first support frame 3, and the sliding groove 7 is connected to the semi-open groove 5 space arranged at the front end of the first support frame 3. A limiting screw 8 is set inside the sliding groove 7, and a threaded hole is provided in the other side of the L-shaped pressure plate 61 arranged at the front end of the first support frame 3. One end of the limiting screw 8 can pass through the sliding groove 7 and be threadedly connected in the corresponding threaded hole, and the sliding groove 7 is used as a clearance space to cooperate with the threaded hole set in the L-shaped pressure plate 61 to limit the assembly and protection of the L-shaped pressure plate 61 and the first support frame 3 without interfering with the movement of the L-shaped pressure plate 61;

[0028] A constraint sleeve 15 and a wiring sleeve 17 are fixedly connected to the middle part of the front end of the first support frame 3, and a second long bolt 16 is installed inside the constraint sleeve 15. An assembly hole that can be clamped with one end of the second long bolt 16 is opened on one side of the front end of the pulley 1. The second long bolt 16 can be connected with the assembly hole with the support of the constraint sleeve 15 to limit the pulley 1 and the first support frame 3.

[0029] Working principle:

[0030] Embodiment 1

[0031] During use, the pulley 1 provides auxiliary guidance and support for the existing metal sling under the support of the first support frame 3, the support shaft 2, and the second support frame 4, and during the rotation of the pulley 1, the support shaft 2 will reciprocate and hit the anti-movement block 9 under the support of the first support frame 3, and then the L-shaped pressure plate 61 inside the elastic limiting component 6 will reciprocate and make way in the corresponding semi-open groove 5, and the L-shaped pressure plate 61 does not completely disengage from the corresponding positioning groove, so that the support shaft 2 can be limited and prevented from falling off in the first support frame 3;

[0032] When the pulley 1 needs to be paused, the limit screw 8 can be passed through the corresponding slide groove 7 and threadedly connected to the threaded hole in the corresponding L-shaped pressure plate 61, and then the L-shaped pressure plate 61 can be assembled and limited using the first support frame 3. At the same time, the anti-movement block 9 arranged at the bottom of the L-shaped pressure plate 61 can be secondary-assembled and limited with the corresponding limit groove on the surface of the support shaft 2, thereby fully ensuring the self-stop reliability of the pulley 1 when not in use.

[0033] Embodiment 2

[0034] During use, the pulley 1 provides auxiliary guidance and support for the existing metal sling under the support of the first support frame 3, the support shaft 2, and the second support frame 4, and during the rotation of the pulley 1, the support shaft 2 will reciprocate and hit the anti-movement block 9 under the support of the first support frame 3, and then the L-shaped pressure plate 61 inside the elastic limiting component 6 will reciprocate and make way in the corresponding semi-open groove 5, and the L-shaped pressure plate 61 does not completely disengage from the corresponding positioning groove, so that the support shaft 2 can be limited and prevented from falling off in the first support frame 3;

[0035] When the pulley 1 needs to be paused, the position of the pulley 1 can be fine-tuned so that the assembly hole at the front end of the pulley 1 is aligned with the constraint sleeve 15. Then, one end of the second long bolt 16 passes through the constraint sleeve 15 and is snapped into the assembly hole to limit the pulley 1 and the first support frame 3.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. At the same time, in the drawings of the present utility model, the fill pattern is only for distinguishing the layers, without any other limitation.

[0037] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pulley device for a small sling, comprising a pulley (1) and a support shaft (2) sleeved on the inner side of the middle part of the pulley (1), characterized in that: A first support frame (3) is sleeved on the outer side of the pulley (1). Clamping grooves are formed in the front and rear ends inside one side of the first support frame (3). The two ends of the support shaft (2) are respectively clamped in the two clamping grooves. A handle (14) is fixedly connected to one end face of the support shaft (2). Semi-open slots (5) are formed in the tops inside the front and rear ends on one side of the first support frame (3). The two semi-open slots (5) are respectively in spatial communication with the two clamping grooves. Elastic limiting components (6) are sleeved in the two semi-open slots (5). One side structure of the elastic limiting component (6) can penetrate through the semi-open slot (5) and be sleeved in the corresponding clamping groove. The other side of the first support frame (3) is connected to a second support frame (4).

2. The pulley device for a small sling according to claim 1, characterized in that: The two elastic limiting components (6) respectively include an L-shaped pressing plate (61), an auxiliary guide rod (62), and a buffer spring (63). Constraint sleeve blocks (15) are formed in the middle parts inside the front and rear ends of the first support frame (3). The two constraint sleeve blocks (15) are in spatial communication with the two semi-open slots (5) in a one-to-one correspondence. The other side of the L-shaped pressing plate (61) is clamped inside the corresponding semi-open slot (5). One side of the L-shaped pressing plate (61) penetrates through the semi-open slot (5) and is in surface contact and limitation with the corresponding end surface of the support shaft (2). The two ends of the auxiliary guide rod (62) are respectively fixedly connected to the surface on the other side of the L-shaped pressing plate (61) and are clamped inside the constraint sleeve block (15). The two ends of the buffer spring (63) are respectively fixedly connected to the surface on the other side of the L-shaped pressing plate (61) and the inner wall of the corresponding semi-open slot (5).

3. A pulley device for a small sling according to claim 1, characterized in that: A first sleeve (10) and a second sleeve (11) are respectively fixedly connected to the surfaces on the other side of the first support frame (3) and one side of the second support frame (4). The first sleeve (10) and the second sleeve (11) are aligned and jointly clamped with a first long bolt (12). A nut (13) is threadedly connected to the bottom surface of the first long bolt (12).

4. A pulley device for a small sling according to claim 3, characterized in that: Mounting holes are formed in the front and rear ends inside the other side of the second support frame (4). The first support frame (3) can be rotationally adjusted relative to the second support frame (4) under the support of the hinge structure formed by the first long bolt (12), the second sleeve (11), and the first sleeve (10).

5. The pulley device for a small sling according to claim 2, wherein: A plurality of limiting slots are formed in the surface of one end of the support shaft (2). The plurality of limiting slots are distributed along the circumferential direction of the end of the support shaft (2). An anti-movement block (9) is fixedly connected to the bottom of one side of the L-shaped pressing plate (61) arranged at the front end of the first support frame (3). The anti-movement block (9) can be sleeved and limited in the corresponding limiting slot.

6. The pulley device for a small sling according to claim 2, characterized in that: A sliding slot (7) is formed in the front-end structure on one side of the first support frame (3). The sliding slot (7) is in spatial communication with the semi-open slot (5) arranged at the front end of the first support frame (3). A limiting screw (8) is sleeved inside the sliding slot (7). A threaded hole is formed in the other side of the L-shaped pressing plate (61) arranged at the front end of the first support frame (3). One end of the limiting screw (8) can penetrate through the sliding slot (7) and be threadedly connected in the corresponding threaded hole.

7. A pulley device for a small sling according to claim 1, characterized in that: A restraint sleeve block (15) and a wiring sleeve block (17) are fixedly connected to the middle part of the front end of the first support frame (3) respectively. A second long bolt (16) is sleeved inside the restraint sleeve block (15). An assembly hole capable of being clamped with one end of the second long bolt (16) is formed in one side of the front end of the pulley (1).

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