A manual four-suspension-arm fixed-column cantilever crane

Abstract

The utility model relates to cantilever crane technical field, concretely relates to a kind of manual four cantilever fixed column cantilever crane, including stand, the top of stand is fixedly connected with two oppositely arranged rotary shafts, two rotary shafts are rotatably connected with two hinge bases distributed above and below on each rotary shaft, baffle located above hinge base is equipped between two rotary shafts, each hinge base is detachably connected with cantilever by bolt, and limiting buffer device is equipped between adjacent two cantilevers;The upper portion of stand is fixedly connected with support plate, and guide wheel device for supporting cantilever is equipped between cantilever and support plate.The utility model four cantilevers can simultaneously, independently hoist goods without interfering each other, improve work efficiency, and protect equipment from collision damage, in addition, part of bending moment that cantilever bears is transferred to support plate by guide wheel device, to facilitate load dispersion, so as to be able to reduce the droop and sway of cantilever end under load, enhance the stability when cantilever works.

Description

Technical Field

[0001] This utility model relates to the field of cantilever crane technology, specifically to a manual four-cantilever fixed-column cantilever crane. Background Technology

[0002] Currently, the cantilever cranes commonly used in industrial workshops are mainly single-cantilever or double-cantilever structures. Among them, the single-cantilever structure is limited by the working range and cannot meet the needs of multi-station synchronous operation. The double-cantilever structure has the risk of collision during the rotation of the cantilever, which can easily lead to safety accidents. In addition, the bending moment generated by the lever effect when the cantilever extends can easily cause the end of the cantilever to sag and sway under load, resulting in insufficient stability. Therefore, there is an urgent need to develop a cantilever crane that supports independent operation of multiple workstations, has anti-collision function, and has strong structural stability. Utility Model Content

[0003] This utility model provides a manually operated four-cantilever fixed column cantilever crane to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a manual four-cantilever fixed column cantilever crane, including a column, the bottom end of the column is fixedly connected by a base, the top end of the column is fixedly connected to two oppositely arranged rotating shafts, each rotating shaft is rotatably connected to two vertically distributed hinge seats, a baffle is provided between the two rotating shafts and above the hinge seats, each hinge seat is detachably connected to a cantilever by bolts, and a limiting buffer device is provided between two adjacent cantilever arms; a support plate is fixedly connected to the upper part of the column, and a guide wheel device for supporting the cantilever is provided between the cantilever and the support plate.

[0005] Preferably, the limiting buffer device includes a buffer seat fixedly connected to the side of the cantilever, a polyurethane buffer block is installed inside the buffer seat, and a fixing plate corresponding to the position of the polyurethane buffer block is installed on the side of the adjacent cantilever.

[0006] Preferably, a raceway is provided on the top surface of the support plate, and the guide wheel device includes a frame fixedly connected to the bottom surface of the cantilever, with a guide wheel installed at the bottom end of the frame, and the guide wheel making rolling contact with the inner bottom surface of the raceway.

[0007] Preferably, a stop is fixedly connected to the top of the column to limit the rotation range of the cantilever.

[0008] Preferably, the hinge is rotatably connected to the rotating shaft via a sliding bearing.

[0009] Preferably, an oil nozzle is connected to the side wall of the hinge.

[0010] Preferably, an electric hoist is mounted on the cantilever.

[0011] Preferably, a traction steel wire rope is provided at the end of the cantilever away from the hinge seat, and a handle is provided at the bottom end of the traction steel wire rope.

[0012] The beneficial effects of this utility model are as follows: (1) The four cantilever arms of this utility model can lift goods simultaneously and independently without interfering with each other, which improves work efficiency and protects the equipment from collision damage. In addition, the guide wheel device transmits part of the bending moment borne by the cantilever arm to the support plate to distribute the load, thereby reducing the sagging and shaking of the cantilever end under load and enhancing the stability of the cantilever arm during operation; (2) By setting the sliding bearing, it is easier for workers to pull the cantilever arm to rotate. By setting the oil nozzle, it is easier to inject grease regularly, so that the sliding bearing is well lubricated, thereby reducing wear and extending the service life of the equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A magnified structural diagram of part A in the middle; Figure 3 This is a top view of the structure of this utility model; Figure 4 for Figure 3 A magnified structural diagram of section B in the middle.

[0014] Reference numerals: 1. Column, 2. Base, 3. Rotating shaft, 4. Hinge, 5. Baffle, 6. Bolt, 7. Cantilever, 8. Limiting buffer device, 81. Buffer seat, 82. Polyurethane buffer block, 83. Fixing plate, 9. Support plate, 10. Guide wheel device, 101. Frame, 102. Guide wheel, 11. Roller track, 12. Stop, 13. Oil nozzle, 14. Electric hoist, 15. Traction wire rope, 16. Handle. Detailed Implementation

[0015] The present invention will now be further described with reference to the accompanying drawings.

[0016] like Figure 1-4 As shown, this utility model provides a manual four-cantilever fixed column cantilever crane, including a column 1. The bottom end of the column 1 is fixed by a base 2. The top end of the column 1 is fixedly connected to two oppositely arranged rotating shafts 3. Each rotating shaft 3 is rotatably connected to two vertically distributed hinge seats 4. A baffle 5 is provided between the two rotating shafts 3 and above the hinge seats 4. Each hinge seat 4 is detachably connected to a cantilever 7 by bolts 6. A limiting buffer device 8 is provided between two adjacent cantilever 7s. A support plate 9 is fixedly connected to the upper part of the column 1. A guide wheel device 10 for supporting the cantilever 7 is provided between the cantilever 7 and the support plate 9.

[0017] Specifically, the four cantilever arms 7 are mounted on two rotating shafts 3 via independent hinge seats 4, allowing each cantilever arm 7 to rotate independently. When two cantilever arms 7 approach each other, the limiting buffer device 8 can make contact first and buffer the movement, thereby preventing damage caused by collisions between the cantilever arms 7 during rotation. In this way, the four cantilever arms 7 can lift goods simultaneously without interfering with each other, thus improving work efficiency. In addition, the support plate 9 is fixed to the upper part of the column 1, providing an additional intermediate support point for the cantilever arm 7. The guide wheel device 10 transmits force between the cantilever arm 7 and the support plate 9, transferring part of the bending moment borne by the cantilever arm 7 to the support plate 9, effectively dispersing the load, improving the overall rigidity and load-bearing capacity, thereby reducing the sagging and swaying of the cantilever arm 7 end under load and enhancing the stability of the cantilever arm 7.

[0018] In some embodiments, the limiting buffer device 8 includes a buffer seat 81 fixedly connected to the side of the cantilever 7, a polyurethane buffer block 82 installed in the buffer seat 81, and a fixing plate 83 corresponding to the position of the polyurethane buffer block 82 installed on the side of adjacent cantilever 7. Specifically, in use, the polyurethane buffer block 82 absorbs the impact force when two cantilever 7 approach each other and limits the angle between the two cantilever 7, ensuring that the minimum angle between two cantilever 7 with the same rotation axis 3 is 40° and the minimum angle between two cantilever 7 with different rotation axes 3 is 25°, thereby reducing interference between the cantilever 7.

[0019] In some embodiments, a raceway 11 is formed on the top surface of the support plate 9, and the guide wheel device 10 includes a frame 101 fixedly connected to the bottom surface of the cantilever 7. A guide wheel 102 is mounted on the bottom end of the frame 101, and the guide wheel 102 makes rolling contact with the inner bottom surface of the raceway 11. Specifically, when the cantilever 7 rotates, the cantilever 7 drives the guide wheel 102 to roll along the raceway 11 on the support plate 9, so that the support plate 9 supports the cantilever 7 through the guide wheel 102 and the frame 101, thereby enhancing the stability of the cantilever 7.

[0020] In some embodiments, a stop 12 for limiting the rotation range of the cantilever 7 is fixedly connected to the top of the column 1. The rotation range of the cantilever 7 can be limited by setting the stop 12. The stop 12 can be welded according to the on-site requirements for the rotation range of the cantilever 7.

[0021] In some embodiments, the hinge seat 4 is rotatably connected to the rotating shaft 3 via a sliding bearing. The sliding bearing can reduce the rotational resistance of the cantilever 7, making it easier for workers to pull the cantilever 7 to rotate. An oil nozzle 13 is connected to the side wall of the hinge seat 4. Lubricating grease is periodically injected into the sliding bearing through the oil nozzle 13, which can keep the sliding bearing lubricated, thereby reducing the wear of the sliding bearing and extending its service life.

[0022] In some embodiments, an electric hoist 14 is mounted on the cantilever 7. In this embodiment, two electric hoists 14 are mounted on each cantilever 7. The two electric hoists 14 can improve the hoisting efficiency of a single workstation.

[0023] In some embodiments, a traction wire rope 15 is provided at the end of the cantilever 7 away from the hinge seat 4, and a handle 16 is provided at the bottom end of the traction wire rope 15. By providing the traction wire rope 15 and the handle 16, it is convenient for workers to rotate the cantilever 7, thereby improving the ease of operation.

[0024] The above embodiments can be combined with each other.

[0025] The above embodiments are not intended to limit the shape, material, structure, etc. of this utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A manually operated four-cantilever fixed-column cantilever crane, comprising a column, the bottom end of which is fixed by a base, characterized in that: The top of the column is fixedly connected to two opposing rotating shafts. Each rotating shaft is rotatably connected to two vertically distributed hinge seats. A baffle is provided between the two rotating shafts and above the hinge seats. Each hinge seat is detachably connected to a cantilever by bolts. A limiting buffer device is provided between two adjacent cantilever arms. A support plate is fixedly connected to the upper part of the column, and a guide wheel device for supporting the cantilever is provided between the cantilever and the support plate.

2. The manually operated four-cantilever fixed-column cantilever crane according to claim 1, characterized in that: The limiting buffer device includes a buffer seat fixedly connected to the side of the cantilever, a polyurethane buffer block installed inside the buffer seat, and a fixing plate corresponding to the position of the polyurethane buffer block installed on the side of the adjacent cantilever.

3. A manually operated four-cantilever fixed-column cantilever crane according to claim 1, characterized in that: The top surface of the support plate is provided with a raceway, and the guide wheel device includes a frame fixedly connected to the bottom surface of the cantilever. A guide wheel is installed at the bottom end of the frame, and the guide wheel makes rolling contact with the inner bottom surface of the raceway.

4. A manually operated four-cantilever fixed-column cantilever crane according to claim 1, characterized in that: The top of the column is fixedly connected to a stop to limit the rotation range of the cantilever.

5. A manually operated four-cantilever fixed-column cantilever crane according to claim 1, characterized in that: The hinge is rotatably connected to the rotating shaft via a sliding bearing.

6. A manually operated four-cantilever fixed-column cantilever crane according to claim 1, characterized in that: An oil nozzle is connected to the side wall of the hinge.

7. A manually operated four-cantilever fixed-column cantilever crane according to claim 1, characterized in that: An electric hoist is mounted on the cantilever.

8. A manually operated four-cantilever fixed-column cantilever crane according to claim 1, characterized in that: The end of the cantilever away from the hinge is provided with a traction steel wire rope, and the bottom end of the traction steel wire rope is provided with a handle.

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