Heavy chain circulating replacement device

Abstract

The utility model relates to the technical field of heavy chain maintenance, in particular to a heavy chain circulating replacement device which comprises a base, a first support and a second support are installed on the top of the base, a winding drum is rotatably installed on the first support, the axial direction of the winding drum is horizontally arranged, and the second support is located on one side of the first support. A horizontally-arranged connecting rod is installed on the second support, rolling shafts are rotationally installed at the two ends of the connecting rod, and the rolling shafts are parallel to the winding drum. The chain winding device has the beneficial effects that the chain can be quickly and easily wound, time and labor are saved, safety is high, use is convenient, the structural size is small, simplicity is achieved, and cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of heavy chain maintenance, in particular to a heavy chain circulation replacement device. Background Art

[0002] A tire crane is a full-slewing crane that has its lifting mechanism mounted on a special chassis consisting of heavy-duty tires and axles. The transmission mode of the tire container crane (also known as a "tire crane") used at the container terminal is chain transmission. The trolley chain is an important component of the tire crane trolley, and it uses a double-row heavy-duty roller chain.

[0003] The trolley chain of the tire crane will suffer serious wear and even break after long-term use, and needs to be replaced according to the actual use status. Otherwise, the chain breakage will cause serious damage to the chain guard and the serious consequence of sudden shutdown, causing safety hazards in operation and causing adverse effects.

[0004] There are several ways to replace the trolley chain: first, manual replacement. Since each trolley chain weighs hundreds of pounds, pure manual installation requires manual replacement and transportation of the chain, as well as manual storage of the chain, which is time-consuming, labor-intensive, dirty, and tiring, and will cause environmental pollution; second, using a forklift to lift the chain for replacement. This method has problems with coordination between people and forklifts, and there are hidden dangers of personal injury such as squeezing and smashing; third, special heavy-duty chain replacement devices have appeared in the prior art. For example, the patent document with publication number CN113290200A proposes a heavy-duty chain replacement device, but it has the problems of complex structure, high cost, large structural size, inconvenient transportation, and the need for electricity to use. Utility Model Content

[0005] In order to solve the technical problems in the prior art of replacing heavy chains, which are time-consuming, labor-intensive, low safety and inconvenient to use, the utility model provides a heavy chain circulation replacement device.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A heavy-duty chain circulation replacement device comprises a base, a first bracket and a second bracket are installed on the top of the base, a reel is rotatably mounted on the first bracket, and the axial direction of the reel is horizontally arranged, the second bracket is located on one side of the first bracket, and a horizontally arranged connecting rod is installed on the second bracket, rollers are rotatably mounted on both ends of the connecting rod, and the rollers are arranged parallel to the reel.

[0008] The base is moved to the outside of the tire of the tire crane, and a large sprocket is installed on the tire of the tire crane, and a small sprocket is also installed on the tire crane. The above structural scheme is adopted, so that the two ends of the connecting rod are located on the left and right sides of the rotating shaft of the small sprocket, so that the two rollers can hold the chain, reduce the contact area between the chain and the small sprocket, and make it easier to wind up the chain. One end of the chain is fixed to the outer peripheral surface of the reel, which can be fixed with a tool or manually, and then the reel is rotated to easily wind up the chain and wind the chain onto the reel. In this way, the present application can quickly and easily wind up the chain, save time and effort, has high safety, is easy to use, has a small structure size, is simple, and has low cost.

[0009] As a preferred implementation of a heavy-duty chain cyclic replacement device, the second bracket is connected to the connecting rod via a first lifting mechanism, and the first lifting mechanism can drive the connecting rod to be lifted and lowered in a vertical direction.

[0010] By adopting the above structural solution, it is convenient to adjust the height of the connecting rod and the roller according to the height of the equipment and the needs of the staff, making the winding of the chain more labor-saving and convenient.

[0011] As a preferred implementation method of a heavy-duty chain circulation replacement device, the second bracket is a vertically arranged hollow shell with openings on the top and sides of the second bracket; the second lifting mechanism includes a frame, which is installed in the side opening of the second bracket, and the frame has a lifting opening facing the side opening of the second bracket, and the interior of the frame is hollow and through-through from top to bottom; the interior of the second bracket is provided with a vertically arranged rack, which passes through the frame, and the side of the rack with teeth faces the lifting opening; a ratchet shaft is rotatably installed in the lifting opening, and a ratchet is fixedly installed on the outside of the ratchet shaft, and the ratchet cooperates with the rack; the ratchet shaft passes through the side of the frame, and a rocker is rotatably installed on one end of the ratchet shaft that passes through the frame, and a pawl is hinged on the rocker, the hinge shaft is arranged parallel to the ratchet shaft, and the pawl is adapted to the ratchet; the top of the rack is fixedly connected to the connecting rod.

[0012] By adopting the above-mentioned structural scheme, the pawl is moved to the lower or upper side of the rocker, and the end of the pawl can be inserted between two adjacent ratchet teeth of the ratchet wheel. By swinging the rocker back and forth up and down, the pawl can push the ratchet wheel to rotate in one direction, thereby causing the rack to move continuously upward or downward to achieve lifting.

[0013] As a preferred implementation method of a heavy-duty chain circulation replacement device, a third bracket is also installed on the base, and the third bracket is located on the side of the second bracket away from the first bracket. A folding hinge is installed on the top of the third bracket, and the folding hinge is arranged parallel to the roller. A plurality of folding rods are hingedly installed on the folding hinge, and the angles between the folding rods are adjustable; a roller is rotatably installed on the end of the folding rod away from the folding hinge, and the roller is arranged parallel to the roller.

[0014] By adopting the above-mentioned structural scheme, the angle between the two folding rods is adjusted so that the two folding rods are respectively located on the upper and lower sides of the rotating shaft of the large sprocket, so that the roller on the upper folding rod can support the chain, and the lower folding rod is located between the chain and the large sprocket, thereby reducing the contact area between the chain and the large sprocket and facilitating the winding of the chain.

[0015] As a preferred implementation of a heavy-duty chain circulation replacement device, a second lifting mechanism is installed on the third bracket, and the second lifting mechanism can drive the folding hinge shaft to move up and down in the vertical direction.

[0016] The above structural solution makes it easy to adjust the height of the folding hinge shaft according to the height of the equipment and the needs of the staff, making the winding of the chain more labor-saving and convenient.

[0017] As a preferred implementation of a heavy-duty chain cyclic replacement device, the first bracket is connected to the reel via a third lifting mechanism, and the third lifting mechanism can drive the reel to move up and down in a vertical direction.

[0018] The above structural solution makes it easy to adjust the height of the reel according to the height of the equipment and the needs of the staff, making the winding of the chain more labor-saving and convenient.

[0019] As a preferred implementation method of a heavy-duty chain circulation replacement device, the third lifting mechanism includes a lifting screw, which is arranged in a vertical direction. The bottom end of the lifting screw is rotatably installed on the base, and the lifting screw is located on the side of the first bracket away from the reel; a lifting nut is installed on the outside of the lifting screw, a bearing is installed on the outside of the lifting nut, a connecting piece is installed on the outer ring of the bearing, the first bracket is provided with a stop groove, the stop groove is opened in the vertical direction, a protruding shaft is provided on one side of the connecting piece, the protruding shaft is vertically arranged to the lifting screw, the protruding shaft extends out of the stop groove, and the reel is rotatably installed on the protruding shaft.

[0020] By adopting the above-mentioned structural scheme, the lifting screw is rotated to move the lifting nut up and down. Since a bearing is installed between the connecting piece and the outside of the lifting nut, the connecting piece will not rotate with the lifting nut. The protruding shaft on the connecting piece is inserted into the anti-rotation groove, so that the connecting piece will not rotate but will only move up and down in the anti-rotation groove. In this way, the height of the reel can be adjusted to facilitate the winding of the chain.

[0021] As a preferred implementation of a heavy-duty chain cycle replacement device, a rotating handle is fixedly mounted on the top of the lifting screw, and the rotating handle is vertically arranged to the lifting screw.

[0022] By adopting the above structural solution, the lifting screw can be rotated by turning the rotating handle, which is convenient and labor-saving.

[0023] As a preferred implementation of a heavy-duty chain cyclic replacement device, a locking threaded hole is provided on the outer circumferential surface of the reel, and a locking bolt is threadedly connected in the locking threaded hole.

[0024] The above structural solution makes it easy to fix the end of the chain on the reel, so that the chain can be more tightly wound on the reel.

[0025] As a preferred implementation of a heavy-duty chain cycle replacement device, a moving wheel is installed at the bottom of the base.

[0026] The above structural solution is adopted to facilitate the movement of the base.

[0027] The beneficial effects of the utility model include:

[0028] The two ends of the connecting rod are located on the left and right sides of the rotating shaft of the small sprocket, so that the two rollers can hold the chain, reduce the contact area between the chain and the small sprocket, and make it easier to wind up the chain. One end of the chain is fixed to the outer peripheral surface of the reel, which can be fixed with a tool or manually, and then the reel is rotated to easily wind up the chain and wind the chain onto the reel. In this way, the present application can quickly and easily wind up the chain, save time and effort, has high safety, is easy to use, has a small structure size, is simple, and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a front view structural schematic diagram of a heavy-duty chain cycle replacement device in a specific implementation mode of the utility model;

[0031] Figure 2 It is a front view structural schematic diagram of a heavy-duty chain cycle replacement device in a specific implementation mode of the utility model when in use;

[0032] Figure 3 This is a front view structural diagram of the first lifting mechanism in a specific implementation mode of the utility model;

[0033] Figure 4 It is a side view half-section structure schematic diagram of the first lifting mechanism when it is lifted in a specific embodiment of the utility model;

[0034] Figure 5 It is a side view half-section structure schematic diagram of the first lifting mechanism when descending in a specific embodiment of the utility model;

[0035] Figure 6 It is a side structural schematic diagram of the third lifting mechanism in a specific implementation manner of the utility model.

[0036] List of parts and reference numerals:

[0037] 1. Base; 2. First bracket; 3. Second bracket; 4. Third bracket; 5. Lifting screw; 6. Connector; 7. Stop groove; 8. Protruding shaft; 9. Locking bolt; 10. Turning handle; 11. Reel; 12. Connecting rod; 13. Roller; 14. Frame; 15. Lifting port; 16. Rack; 17. Ratchet shaft; 18. Ratchet; 19. Rocker; 20. Paw; 21. Folding hinge; 22. Folding rod; 23. Roller; 24. Large sprocket; 25. Small sprocket. DETAILED DESCRIPTION

[0038] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme in the utility model will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] Reference Figure 1-6 This embodiment proposes a heavy-duty chain circulation replacement device, including a base 1, a moving wheel is installed at the bottom of the base 1, and a first bracket 2, a second bracket 3 and a third bracket 4 are installed at the top of the base 1.

[0040] The first bracket 2 is connected to the third lifting mechanism, which can drive the reel 11 to lift in the vertical direction, and the axial direction of the reel 11 is horizontally arranged. The third lifting mechanism includes a lifting screw 5, which is arranged in the vertical direction, and the bottom end of the lifting screw 5 is rotatably mounted on the base 1, and the lifting screw 5 is located on the side of the first bracket 2 away from the reel 11; the lifting screw 5 is equipped with a lifting nut on the outside, and a bearing is installed on the outside of the lifting nut, and a connecting member 6 is installed on the outer ring of the bearing. The first bracket 2 is provided with a stop groove 7, and the stop groove 7 is opened in the vertical direction. A protruding shaft 8 is provided on one side of the connecting member 6, and the protruding shaft 8 is vertically arranged with the lifting screw 5, and the protruding shaft 8 extends out of the stop groove 7, and the reel 11 is rotatably mounted on the protruding shaft 8, and a locking threaded hole is opened on the outer peripheral surface of the reel 11, and a locking bolt 9 is threadedly connected in the locking threaded hole. A rotating handle 10 is fixedly installed on the top of the lifting screw 5, and the rotating handle 10 is vertically arranged with the lifting screw 5. By turning the rotating handle 10, the lifting screw 5 can be rotated to move the lifting nut up and down. Since a bearing is installed between the connecting member 6 and the outside of the lifting nut, the connecting member 6 will not rotate with the lifting nut. The protruding shaft 8 on the connecting member 6 is inserted into the anti-rotation groove 7, so that the connecting member 6 will not rotate but will only move up and down in the anti-rotation groove 7. In this way, the height of the reel 11 can be adjusted to facilitate the winding of the chain.

[0041] The second bracket 3 is located at one side of the first bracket 2, and a first lifting mechanism is installed on the second bracket 3. The first lifting mechanism can drive the connecting rod 12 to lift in the vertical direction. The connecting rod 12 is arranged horizontally, and rollers 13 are rotatably installed at both ends of the connecting rod 12. The rollers 13 are arranged parallel to the reel 11. The second bracket 3 is a vertically arranged hollow shell, and the top and side of the second bracket 3 are opened. The second lifting mechanism includes a frame 14, which is installed in the side opening of the second bracket 3. The frame 14 has a lifting port 15 facing the side opening of the second bracket 3, and the interior of the frame 14 is hollow and penetrates from top to bottom; a vertically arranged rack 16 is provided inside the second bracket 3, and the rack 16 passes through the frame 14, and the side of the rack 16 with teeth faces the lifting port 15; a ratchet shaft 17 is rotatably installed in the lifting port 15, and a ratchet 18 is fixedly installed on the outside of the ratchet shaft 17, and the ratchet 18 cooperates with the rack 16, so that the frame 14 and the ratchet 18 can limit the movement of the rack 16 in the front, back, left and right directions; the ratchet shaft 17 passes through the side of the frame 14, and a rocker 19 is rotatably installed at one end of the ratchet shaft 17 passing through the frame 14, and a ratchet 20 is hinged on the rocker 19, and the hinge shaft is arranged parallel to the ratchet shaft 17, and the ratchet 20 is adapted to the ratchet 18; the top of the rack 16 is fixedly connected to the connecting rod 12.

[0042] Reference Figure 4 , move the pawl 20 to the lower side of the rocker 19, one end of the pawl 20 can be inserted between two adjacent ratchet teeth of the ratchet wheel 18, and the rocker 19 is swung back and forth up and down. When the rocker 19 is swung downward, the pawl 20 can push the ratchet wheel 18 to rotate clockwise, thereby moving the rack 16 upward and driving the connecting rod 12 to rise; when the rocker 19 is swung upward, since the pawl 20 and the rocker 19 are hinged, the pawl 20 can escape from between two adjacent ratchet teeth of the ratchet wheel 18, and then enter between the next pair of adjacent ratchet teeth, thereby reciprocating and enabling the rack 16 to continue to move upward.

[0043] Reference Figure 5 , the pawl 20 is moved in the opposite direction to the upper side of the rocker 19, and the other end of the pawl 20 can also be inserted between two adjacent ratchet teeth of the ratchet wheel 18, and the rocker 19 is swung back and forth up and down. When the rocker 19 is swung upward, the pawl 20 can push the ratchet wheel 18 to rotate counterclockwise, thereby moving the rack 16 downward and driving the connecting rod 12 to descend; when the rocker 19 is swung downward, since the pawl 20 and the rocker 19 are hinged, the pawl 20 can escape from between two adjacent ratchet teeth of the ratchet wheel 18, and then enter between the next pair of adjacent ratchet teeth, thereby reciprocating and enabling the rack 16 to continue to move downward.

[0044] A third bracket 4 is also installed on the base 1. The third bracket 4 is located on the side of the second bracket 3 away from the first bracket 2. A folding hinge 21 is installed on the top of the third bracket 4. The folding hinge 21 is arranged parallel to the roller 13. A plurality of folding rods 22 are hingedly installed on the folding hinge 21. The angle between the folding rods 22 is adjustable. Specifically, each folding rod 22 can rotate and lock along the periphery of the folding hinge 21, so as to adjust the angle between the folding rods 22. An angle adjustment device is connected between the folding rod 22 and the folding hinge 21. The angle adjustment method is the existing technology and is not described here. A roller 23 is rotatably installed on one end of the folding rod 22 away from the folding hinge 21. The roller 23 is arranged parallel to the roller 13. A second lifting mechanism is installed on the third bracket 4. The second lifting mechanism can drive the folding hinge 21 to move up and down in the vertical direction. The second lifting mechanism can be lifted and lowered in the manner of the first lifting mechanism or the third lifting mechanism.

[0045] Figure 2 The thicker lines in the middle represent the chain. Figure 2 The large sprocket 24 and the small sprocket 25 are simplified structures. Figure 4 and Figure 5 The ratchet 18, pawl 20 and rack 16 are simplified structures. Those skilled in the art should understand that the outer peripheral surface of the ratchet 18 is provided with ratchet teeth, and the end of the pawl 20 can be inserted between adjacent ratchet teeth, so that the pawl 20 can push the ratchet 18 to rotate.

[0046] The working principle of this embodiment is:

[0047] The base 1 is pushed to move to the outside of the tire of the tire crane, on which a large sprocket 24 is installed, and a small sprocket 25 is also installed. The height of the third lifting mechanism is adjusted, and the angle between the two folding rods 22 is adjusted so that the two folding rods 22 are respectively located on the upper and lower sides of the rotating shaft of the large sprocket 24, so that the rollers 23 on the upper folding rod 22 can hold the chain, and the lower folding rod 22 is located between the chain and the large sprocket 24, so as to reduce the contact area between the chain and the large sprocket 24, and facilitate the winding of the chain. Then the height of the first lifting mechanism is adjusted so that the two ends of the connecting rod 12 are located on the left and right sides of the rotating shaft of the small sprocket 25, so that both rollers 13 can hold the chain, and reduce the contact area between the chain and the small sprocket 25, and facilitate the winding of the chain. One end of the chain is connected to the outer peripheral surface of the reel 11 through the locking bolt 9, and the reel 11 is rotated to easily wind up the chain and wind the chain onto the reel 11.

[0048] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heavy-duty chain cycle replacement device, comprising a base (1), characterized in that: A first bracket (2) and a second bracket (3) are mounted on the top of the base (1); a reel (11) is rotatably mounted on the first bracket (2); the axial direction of the reel (11) is arranged horizontally; the second bracket (3) is located on one side of the first bracket (2); a horizontally arranged connecting rod (12) is mounted on the second bracket (3); rollers (13) are rotatably mounted on both ends of the connecting rod (12); the rollers (13) are arranged parallel to the reel (11).

2. A heavy-duty chain cycle replacement device according to claim 1, characterized in that: The second bracket (3) is connected to the connecting rod (12) via a first lifting mechanism, and the first lifting mechanism is capable of driving the connecting rod (12) to move up and down in a vertical direction.

3. A heavy-duty chain cycle replacement device according to claim 2, characterized in that: The second bracket (3) is a vertically arranged hollow shell, and the second bracket (3) has openings at the top and the side. The second lifting mechanism comprises a frame (14), the frame (14) is installed in the side opening of the second bracket (3), the frame (14) has a lifting opening (15) facing the side opening of the second bracket (3), the frame (14) is hollow inside and penetrates from top to bottom. A vertically arranged rack (16) is provided inside the second bracket (3), the rack (16) passes through the frame (14), and the side of the rack (16) having teeth faces the lifting opening (15). A ratchet shaft (17) is rotatably mounted in the lifting opening (15), a ratchet (18) is fixedly mounted on the outside of the ratchet shaft (17), and the ratchet (18) cooperates with the rack (16); the ratchet shaft (17) passes through the side of the frame (14), and a rocker (19) is rotatably mounted on one end of the ratchet shaft (17) passing through the frame (14), and a ratchet pawl (20) is hinged on the rocker (19), the hinge shaft is arranged parallel to the ratchet shaft (17), and the ratchet pawl (20) is adapted to the ratchet (18); the top end of the rack (16) is fixedly connected to the connecting rod (12).

4. A heavy-duty chain cycle replacement device according to claim 1, characterized in that: A third bracket (4) is also mounted on the base (1). The third bracket (4) is located on a side of the second bracket (3) away from the first bracket (2). A folding hinge shaft (21) is mounted on the top of the third bracket (4). The folding hinge shaft (21) is arranged parallel to the roller shaft (13). A plurality of folding rods (22) are hingedly mounted on the folding hinge shaft (21). The angles between the folding rods (22) are adjustable. A roller (23) is rotatably mounted on one end of the folding rod (22) away from the folding hinge shaft (21). The roller (23) is arranged parallel to the roller shaft (13).

5. A heavy-duty chain cycle replacement device according to claim 4, characterized in that: A second lifting mechanism is installed on the third bracket (4), and the second lifting mechanism can drive the folding hinge shaft (21) to move up and down in a vertical direction.

6. A heavy-duty chain cycle replacement device according to claim 1, characterized in that: The first bracket (2) is connected to the reel (11) via a third lifting mechanism, and the third lifting mechanism is capable of driving the reel (11) to move up and down in a vertical direction.

7. A heavy-duty chain cycle replacement device according to claim 6, characterized in that: The third lifting mechanism comprises a lifting screw (5), the lifting screw (5) is arranged in a vertical direction, the bottom end of the lifting screw (5) is rotatably mounted on the base (1), and the lifting screw (5) is located on a side of the first bracket (2) away from the reel (11); a lifting nut is mounted on the outside of the lifting screw (5), a bearing is mounted on the outside of the lifting nut, a connecting piece (6) is mounted on the outer ring of the bearing, the first bracket (2) is provided with a rotation-stop groove (7), the rotation-stop groove (7) is arranged in a vertical direction, a protruding shaft (8) is provided on one side of the connecting piece (6), the protruding shaft (8) is vertically arranged with the lifting screw (5), the protruding shaft (8) extends out of the rotation-stop groove (7), and the reel (11) is rotatably mounted on the protruding shaft (8).

8. A heavy-duty chain cycle replacement device according to claim 7, characterized in that: A rotating handle (10) is fixedly mounted on the top end of the lifting screw rod (5), and the rotating handle (10) is arranged vertically to the lifting screw rod (5).

9. A heavy-duty chain cycle replacement device according to claim 1, characterized in that: A locking threaded hole is formed on the outer peripheral surface of the winding drum (11), and a locking bolt (9) is threadedly connected in the locking threaded hole.

10. A heavy-duty chain cycle replacement device according to claim 1, characterized in that: The bottom of the base (1) is provided with moving wheels.

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