A gantry crane hoist

Abstract

The utility model relates to the technical field of crane slings, and in particular discloses a gantry crane sling, including a sling seat, a hoist, a lifting shaft, a sliding seat and a clamping claw. The sling seat includes a lifting bracket, an annular base and an intermediate seat. The lifting bracket is arranged at the top of the annular base, the intermediate seat is coaxially arranged with the annular base, and a plurality of support rods are evenly arranged on the annular base. The hoist is arranged on the lifting bracket, the lifting shaft is penetrated and arranged on the intermediate seat, the lifting shaft is connected to the hoist, the sliding seat is slidably arranged on the support rod, and is connected to the lifting shaft, and the clamping claw is arranged on the sliding seat. The utility model drives the sliding seat to slide along the support rod by moving the lifting shaft up and down relative to the sling seat, and adjusts the distance of the clamping claw relative to the center of the sling seat, so as to clamp objects of different sizes, thereby improving the clamping range, and greatly improving the application range of the crane. The actuator drives the positioning block to be inserted into the positioning groove, thereby improving the stability of the clamping and the safety of use.

Description

Technical Field

[0001] The utility model relates to the technical field of crane slings, in particular to a gantry crane sling. Background Art

[0002] As a large-scale special equipment in the infrastructure and logistics and transportation industries, gantry cranes have the characteristics of high site utilization, large operating range, wide adaptability, and strong versatility. They have become indispensable key equipment in many construction sites, especially in port cargo yards. Spreaders refer to devices used by gantry cranes to lift heavy objects. There are many types of spreaders. Commonly used spreaders include hooks, slings, rings, clamps, etc., in various forms. However, when the objects to be lifted are of different sizes, especially for the lifting of round objects, the existing spreaders are not convenient for clamping or cannot achieve a reliable clamping effect, and are not convenient for transporting and processing the lifted objects, which makes the application scope of the crane small.

[0003] Therefore, it is necessary to propose a gantry crane spreader to overcome the defects of the prior art. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art and provides a gantry crane hoist.

[0005] The technical solution of the utility model is:

[0006] A gantry crane hoist includes a hoist seat, a hoist, a lifting shaft, a sliding seat and a clamping claw. The hoist seat includes a lifting bracket, an annular base and an intermediate seat. The lifting bracket is arranged at the top of the annular base. The intermediate seat and the annular base are coaxially and integrally arranged. A plurality of support rods are evenly distributed on the circumferential side wall of the annular base. The hoist is arranged on the lifting bracket. The lifting shaft penetrates and is slidably arranged on the intermediate seat. The lifting shaft is connected to the hoist. The sliding seat is slidably arranged on the support rod and is connected to the lifting shaft. The clamping claw is arranged on the sliding seat.

[0007] Preferably, a plurality of connecting rods are evenly distributed along the circumferential direction on the upper end of the lifting shaft, the connecting rods correspond to the support rods one by one, the end of the connecting rod away from the lifting shaft is hinged with a connecting rod, and the end of the connecting rod away from the connecting rod is hinged with the sliding seat.

[0008] Preferably, a slot hole penetrating the support rod is arranged on the side wall of the support rod, and a connecting shaft is arranged on the sliding seat, and the connecting shaft is slidably arranged in the slot hole.

[0009] Preferably, a first lifting ring is provided at the top end of the lifting shaft, and the first lifting ring is connected to the hoist through a steel wire rope.

[0010] Preferably, the middle seat is connected to the annular base via a plurality of evenly distributed connecting columns.

[0011] Preferably, a plurality of fixing holes are evenly distributed on the circumferential side wall of the upper end of the intermediate seat, a locking assembly matched with the fixing holes is provided on the connecting column, and a positioning groove matched with the locking assembly is provided on the circumferential surface of the lifting shaft.

[0012] Preferably, the locking assembly includes an actuator and a positioning block, the fixed end of the actuator is arranged on the connecting column, the extended end of the actuator is connected to the positioning block, and a first spring is arranged between the positioning block and the actuator.

[0013] Preferably, a second spring is sleeved on the lifting shaft, one end of the second spring is fixedly arranged on the lifting shaft, and the other end of the second spring abuts against the middle seat.

[0014] Preferably, a second lifting ring is provided at the top of the lifting bracket.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model drives the lifting shaft to move up and down relative to the spreader seat by winding and unwinding the wire rope through the hoist, and then drives the sliding seat to slide along the support rod through the connecting rod, so that the clamping claw moves close to or away from the center of the spreader seat. The distance between the clamping claw and the center of the spreader seat can be adjusted, so that objects of different sizes can be clamped, and the clamping range is improved. The clamping is stable and reliable, which greatly improves the application range of the crane. The actuator drives the positioning block to be inserted into the positioning groove of the lifting shaft to lock the position of the lifting seat relative to the spreader seat, which further improves the stability of the clamping and the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from another angle;

[0019] Figure 3 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 4 This is a structural schematic diagram of a sling seat of the utility model;

[0021] Figure 5 This is a schematic diagram of the lifting shaft structure of the utility model;

[0022] Figure 6 It is a schematic diagram of the locking assembly structure of the utility model.

[0023] Among them, 1. sling seat; 11. lifting bracket; 12. annular base; 13. middle seat; 14. support rod; 15. connecting column; 16. slot hole; 17. fixing hole; 18. second lifting ring; 2. hoist; 3. lifting shaft; 31. connecting rod; 32. positioning groove; 33. first lifting ring; 4. sliding seat; 41. connecting shaft; 5. clamp; 6. connecting rod; 7. actuator; 8. positioning block; 9. first spring; 10. second spring. DETAILED DESCRIPTION

[0024] In order to make the technical means, technical features, utility model objectives and technical effects achieved by the utility model easy to understand, the utility model is further explained below with reference to specific illustrations.

[0025] like Figure 1-Figure 6 As shown, a gantry crane hoist includes a hoist seat 1, a hoist 2, a lifting shaft 3, a sliding seat 4, a clamp 5 and a locking assembly. The hoist 2, the lifting shaft 3, the sliding seat 4 and the locking assembly are all installed on the hoist seat 1. The hoist 2 and the lifting shaft 3 are connected by a wire rope. The hoist 2 drives the lifting shaft 3 to rise and fall relative to the hoist seat 1. The lifting shaft 3 is connected to the sliding seat 4 through a connecting rod 6. The lifting of the lifting shaft 3 drives the sliding seat 4 to slide closer to or away from the hoist seat 1. The clamp 5 is installed on the sliding seat 4 and moves synchronously with the sliding seat 4, so as to clamp the hoisted object and adjust the clamping range. The number of sliding seats 4 and clamps 5 is multiple, which ensures balanced and stable clamping of the hoisted object. The locking assembly is used to auxiliary lock the lifting position of the lifting shaft 3 to prevent the hoisted object from falling when the wire rope connecting the hoist 2 and the lifting shaft 3 fails, thereby improving the safety of use.

[0026] like Figure 1-Figure 3As shown, the sling seat 1 includes a lifting bracket 11, an annular base 12, an intermediate seat 13, a support rod 14 and a connecting column 15. The lifting bracket 11, the annular base 12, the intermediate seat 13, the support rod 14 and the connecting column 15 are integrally processed and have high structural strength. The lifting bracket 11 is connected to the top of the annular base 12, and the intermediate seat 13 is coaxially installed inside the annular base 12. The intermediate seat 13 and the annular base 12 are connected as a whole through the connecting column 15. The number of the connecting column 15 is multiple, and the multiple connecting columns 15 are evenly distributed and connected between the intermediate seat 13 and the annular base 12. The number of the support rod 14 is also multiple. Multiple support rods 14 correspond to the number of sliding seats 4 and clamping jaws 5. Multiple support rods 14 are evenly distributed on the outer circumferential side wall of the annular base 12 in a circle. The interior of the support rod 14 is processed into a hollow structure. A slot 16 is processed on the side wall of the support rod 14. The slot 16 runs through the two side walls of the support rod 14. The sliding seat 4 is installed in the hollow interior of the support rod 14. Both sides of the sliding seat 4 are processed with connecting shafts 41 that can slide and fit in the slot 16. One end of the connecting rod 6 is hinged on the sliding seat 4. A second lifting ring 18 is connected to the top of the lifting bracket 11 to achieve overall lifting.

[0027] like Figure 1-Figure 3 and Figure 4 As shown, the lifting shaft 3 is installed in the middle seat 13, and a first lifting ring 33 is connected to the top of the lifting shaft 3. The first lifting ring 33 is connected to the hoist 2 installed on the lifting bracket 11 through a wire rope. The hoist 2 drives the lifting shaft 3 to slide up and down relative to the middle seat 13 through the wire rope. A plurality of connecting rods 31 are connected to the upper end of the lifting shaft 3. The plurality of connecting rods 31 are evenly distributed on the lifting shaft 3. The connecting rods 31 correspond to the support rods 14 one by one. The end of the connecting rod 31 away from the lifting shaft 3 The lifting shaft 3 is hinged with the other end of the connecting rod 6, and the lifting and lowering of the lifting shaft 3 is transmitted by the connecting rod 6 to drive the sliding seat 4 to slide along the support rod 14. A second spring 10 is mounted on the lower part of the lifting shaft 3, and one end of the second spring 10 is fixedly connected to the lower end of the lifting shaft 3, and the other end of the second spring 10 abuts against the lower surface of the middle seat 13. In the initial state, the hoist 2 unwinds the wire rope, and the lifting shaft 3 is in the lowermost position under the action of gravity and the force of the second spring 10. At this time, the clamp 5 is in the maximum opening range.

[0028] like Figure 3-Figure 6As shown, a plurality of fixing holes 17 are processed on the circumferential side wall near the upper end of the intermediate seat 13, and the plurality of fixing holes 17 are evenly distributed around the circumference. A locking assembly adapted to the fixing holes 17 is installed on the connecting column 15, and the locking assembly includes an actuator 7 and a positioning block 8. The fixed end of the actuator 7 is connected to the connecting column 15, and the protruding end of the actuator 7 is connected to the positioning block 8. The front end of the positioning block 8 is inserted and connected in the fixing hole 17. Positioning grooves 32 adapted to the locking assembly are evenly distributed around the circumference of the circumferential surface of the lifting shaft 3. There are a plurality of positioning grooves 32 corresponding to each locking assembly, and the plurality of positioning grooves 32 are evenly distributed along the axial direction of the lifting shaft 3. The front end of the positioning block 8 is contoured with the shape of the positioning groove 32, so as to facilitate the insertion and positioning of the positioning block 8. In the groove 32, the position of the lifting shaft 3 is locked to prevent the wire rope on the hoist 2 from failing during the lifting process, which would cause the lifting shaft 3 to slide downward and lose the clamping effect on the lifted object, thereby eliminating safety hazards. A first spring 9 is connected between the positioning block 8 and the actuator 7, one end of the first spring 9 abuts against the positioning block 8, and the other end of the first spring 9 abuts against the fixed end of the actuator 7. Under the action of the first spring 9, the positioning block 8 maintains a movement trend away from the actuator 7. When the actuator 7 fails, the first spring 9 pushes the positioning block 8 to be reliably inserted into the positioning groove 32, and safety is guaranteed. The force between the lifting shaft 3 and the positioning block 8 is borne by the positioning block 8 and the intermediate seat 13, and the actuator 7 is not subjected to force, thereby preventing the actuator 7 from being damaged by force.

[0029] The working principle of the utility model is:

[0030] The connection between the utility model and the crane (not shown in the figure) is achieved through the second lifting ring 18. In the initial state, the hoist 2 unwinds the wire rope, the lifting shaft 3 is in the lower position under the action of gravity and the first spring 9, and the clamping jaw 5 is in the maximum opening range. The crane drives the utility model to move to the lifting position. According to the size of the object to be lifted, the hoist 2 is reeled in, and the lifting shaft 3 is pulled upward in the middle seat 13 by the wire rope, and then the sliding seat 4 is driven by the connecting rod 6 to slide along the support rod 14 toward the center direction of the middle seat 13 to adjust the clamping range of the clamping jaw 5. After the clamping jaw 5 is clamped in place, the actuator 7 extends to drive the positioning block 8 to be inserted into the corresponding positioning groove 32, lock the position of the lifting shaft 3 relative to the middle seat 13, and improve the stability and safety of the clamping.

[0031] The above description is only a preferred embodiment of the utility model, and is not intended to limit the scope of implementation of the utility model. That is, all equivalent changes and modifications made according to the content of the patent application scope of the utility model should belong to the technical scope of the utility model.

Claims

1. A gantry crane spreader, characterized in that: The invention comprises a sling seat (1), a hoist (2), a lifting shaft (3), a sliding seat (4) and a clamping claw (5); the sling seat (1) comprises a lifting bracket (11), an annular base (12) and an intermediate seat (13); the lifting bracket (11) is arranged at the top of the annular base (12); the intermediate seat (13) and the annular base (12) are coaxially arranged as a whole; a plurality of support rods (14) are evenly distributed on the circumferential side wall of the annular base (12); the hoist (2) is arranged on the lifting bracket (11); the lifting shaft (3) penetrates and is slidably arranged on the intermediate seat (13); the lifting shaft (3) is connected to the hoist (2); the sliding seat (4) is slidably arranged on the support rod (14) and is connected to the lifting shaft (3); and the clamping claw (5) is arranged on the sliding seat (4).

2. The gantry crane spreader according to claim 1, characterized in that: A plurality of connecting rods (31) are evenly distributed along the circumferential direction at the upper end of the lifting shaft (3), the connecting rods (31) corresponding to the support rods (14) one by one, the ends of the connecting rods (31) away from the lifting shaft (3) are hingedly connected to connecting rods (6), and the ends of the connecting rods (6) away from the connecting rods (31) are hingedly connected to the sliding seat (4).

3. The gantry crane spreader according to claim 1, characterized in that: A slot hole (16) penetrating the support rod (14) is provided on the side wall of the support rod (14), and a connecting shaft (41) is provided on the sliding seat (4), wherein the connecting shaft (41) is slidably disposed in the slot hole (16).

4. The gantry crane spreader according to claim 1, characterized in that: A first lifting ring (33) is provided at the top end of the lifting shaft (3), and the first lifting ring (33) is connected to the hoist (2) via a steel wire rope.

5. The gantry crane spreader according to claim 1, characterized in that: The intermediate seat (13) is connected to the annular base (12) via a plurality of evenly distributed connecting columns (15).

6. The gantry crane hanger according to claim 5, characterized in that: A plurality of fixing holes (17) are evenly distributed on the circumferential side wall of the upper end of the intermediate seat (13), a locking assembly matched with the fixing holes (17) is provided on the connecting column (15), and a positioning groove (32) matched with the locking assembly is provided on the circumferential surface of the lifting shaft (3).

7. The gantry crane hanger according to claim 6, characterized in that: The locking assembly comprises an actuator (7) and a positioning block (8), wherein a fixed end of the actuator (7) is arranged on a connecting column (15), an extended end of the actuator (7) is connected to the positioning block (8), and a first spring (9) is arranged between the positioning block (8) and the actuator (7).

8. The gantry crane spreader according to claim 1, characterized in that: A second spring (10) is sleeved on the lifting shaft (3); one end of the second spring (10) is fixedly arranged on the lifting shaft (3), and the other end of the second spring (10) abuts against the middle seat (13).

9. The gantry crane spreader according to claim 1, characterized in that: A second lifting ring (18) is provided at the top end of the lifting bracket (11).

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