A crane drum structure with double brake interlock

Abstract

The present application relates to the technical field of double brake interlocking crane, and particularly relates to a crane drum structure with double brake interlocking, which comprises two reels, each reel is fixedly installed with a long arc-shaped connecting piece on the inner side, each long arc-shaped connecting piece is provided with a sliding groove through a contraction mechanism, each sliding groove is installed with a folding piece through a push mechanism, two reels are installed with a lifting hook through a main body mechanism, two long arc-shaped connecting pieces are installed with a connecting piece through a left-right distance adjusting mechanism, and the connecting piece is installed with a top plate through a top support mechanism, the present application realizes that the first inclined surface and the second inclined surface of the folding piece are used to make the lifting hook stressed to enter between the two folding pieces, the lifting hook is limited between the two folding pieces, the shaking problem is effectively reduced, the lifting hook is limited by the two folding pieces, when the lifting hook is lowered, the normal work of the lifting hook is not hindered, and the lifting hook does not need to be manually untied or fixed each time.

Description

Technical Field

[0001] This invention relates to the field of crane technology with double brake interlocking, and more particularly to a crane drum structure with double brake interlocking. Background Technology

[0002] A crane, also known as a hoist or overhead crane, is a type of electromechanical equipment that uses a lifting hook or other lifting device to vertically lift or horizontally move materials. It is widely used in warehouses, docks, stations, mines, construction sites, and other similar locations, and is an indispensable piece of equipment in modern production. Based on their structure and function, cranes can be divided into several types: The first type is the bridge crane, including bridge and gantry cranes, suitable for fixed locations such as workshops and warehouses. The second type is the tower crane, used in construction, capable of vertically lifting and horizontally moving heavy objects. The third type is the mobile crane, such as truck cranes and tire cranes, which are mobile and flexible, suitable for outdoor operations. The working principle of a crane is based on the lever principle and torque balance. The crane's drive system includes a hydraulic pump driving hydraulic oil to achieve boom lifting and extension, an electric motor driving a reducer to drive the drum rotation and wind up and unwind the wire rope. Modern cranes are equipped with sensors and monitoring systems to calculate torque and tilt angle in real time and automatically adjust the balance. Its applications include hoisting steel bars, concrete and other materials, assisting in building construction, installing large components in infrastructure construction such as bridges and roads, high-altitude operations during power transmission line maintenance, using agricultural cranes to carry agricultural machinery to improve production efficiency, and loading and unloading cargo at ports and wharves, as well as emergency rescue and other scenarios.

[0003] As one of the main load-bearing components of a crane, the drum undergoes slight deformation during movement due to the weight of the load. This results in the two reels moving slightly outwards downwards and slightly inwards upwards. When suspended at a fixed length for a long time, this can easily cause structural deformation and affect the service life. The crane hook often swings when retracting, which is extremely dangerous. Existing cranes use safety locks or anti-detachment pins to prevent the hook from accidentally coming off, but this requires controlling the drum to retract at a fixed distance. If the retraction is too fast or excessive, the safety lock or anti-detachment pin will be damaged.

[0004] To address this issue, a crane drum structure with dual braking interlocks is designed. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by proposing a crane drum structure with dual braking interlocking.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a crane drum structure with double brake interlocking, comprising two reels, each reel having a long arc-shaped connector fixedly installed on its inner side, each long arc-shaped connector having a sliding groove opened through a shrinking mechanism, each sliding groove having a folding member installed through a pushing mechanism, the two reels having hooks installed through a main body mechanism, the two long arc-shaped connectors having connectors installed through a left-right adjusting mechanism, and the connectors having top plates installed through a top support mechanism;

[0007] The pushing mechanism includes a T-shaped moving member movably mounted on the inner surface of each sliding groove, and each of the folding members is fixedly mounted on the lower surface of the T-shaped moving member. The front surface of the folding member has a first inclined surface, and the lower surface of the folding member has a second inclined surface, for guiding the hook.

[0008] Preferably, the shrinking mechanism includes an L-shaped connector fixedly installed on the rear surface of each long arc-shaped connector, and each sliding groove is formed on the upper surface of the lower end of the L-shaped connector. Each L-shaped connector has a moving groove at its upper end, and an L-shaped adjusting member is movably installed on the inner surface of the moving groove. Each L-shaped connector has a third threaded hole at its upper end, and each third threaded hole is formed above the moving groove. A third threaded rod is movably installed on the inner surface of each third threaded hole, and each third threaded rod is threadedly engaged with the third threaded hole. Each third threaded rod is rotatably connected to the outside of the L-shaped adjusting member.

[0009] Preferably, each of the L-shaped adjusting members has a first movable groove on its inner side, and a first ball bearing is movably installed on the inner surface of each first movable groove.

[0010] Preferably, a fixing plate is fixedly installed on the inner surface of each of the folded parts, and a tension spring is fixedly installed on the opposite surfaces of the two fixing plates.

[0011] Preferably, the main body mechanism includes a drum rotatably mounted on the inner surfaces of two reels, an outer wall fixedly mounted on the outer surface of one reel, and the drum on that side movably passes through the outer wall. A power mechanism is fixedly mounted on the inner surface of the outer wall, and the drum on the other side is fixedly mounted to the power mechanism. A wire rope is fixedly mounted on the outer surface of the drum, and a hook is fixedly mounted on the other end of the wire rope.

[0012] Preferably, the left and right adjustment mechanism includes two L-shaped extended support plates fixedly installed on the upper surface of the connector, and the front L-shaped extended support plate is fixedly installed on the rear surface of the upper end of the outer long arc connector. The connector has second threaded holes on both sides, and a second threaded rod is movably installed in the second threaded hole, and the second threaded rod is threadedly engaged with the second threaded hole. A second guide rod is movably passed through both sides of the connector, and a connecting plate is fixedly installed on the inner side of the second guide rod, and the second threaded rod is rotatably connected to the connecting plate. Two L-shaped support plates are fixedly installed on the upper surface of the connecting plate, and the front L-shaped support plate is fixedly installed on the rear surface of the upper end of the inner long arc connector.

[0013] Preferably, a positioning element is fixedly installed on the outer side of each L-shaped support plate and the L-shaped extended support plate, and two second movable grooves are respectively opened on the outer side of each L-shaped support plate and the L-shaped extended support plate. The second movable grooves are opened below the positioning element, and a second ball is movably installed in each second movable groove.

[0014] Preferably, the top support mechanism includes a first threaded hole formed on the upper surface of the connector, a first threaded rod movably installed on the inner surface of the first threaded hole, and the first threaded rod is threadedly engaged with the first threaded hole. A first guide rod movably passes through the upper surface of the connector, a top plate is fixedly installed on the upper surface of the first guide rod, and the first threaded rod is rotatably connected to the top plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This invention utilizes the first and second inclined surfaces of the folded parts. During the upward pulling process, the hook moves between the two folded parts due to its own weight, effectively limiting the sway amplitude. Furthermore, by limiting the hook with the two folded parts, there is no need to precisely control the distance during the winding process; it is sufficient to roughly retract the hook. When lowering the hook, it will not hinder the normal operation of the hook. There is no need to manually untie or fix the hook each time, saving labor.

[0017] 2. This invention can be flexibly adapted and arranged on the inner side of the outer wall of the crane. By rotating the second threaded rod, the L-shaped support plate and the L-shaped extended support plate support the inside of the reel. By rotating the third threaded rod, the L-shaped adjusting piece in the moving groove moves inward, thereby squeezing the lower part of the outer side of the reel inward, so as to adapt to the shape of the reel and play a supporting role, improving the structural strength of both ends of the drum, and thus effectively preventing the deformation of the drum during suspension.

[0018] 3. The present invention reduces the friction between the L-shaped adjusting member and the reel by means of the first ball bearing and the second ball bearing by means of ... Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a crane drum structure with dual braking interlocking according to the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of a crane drum structure with dual braking interlock according to the present invention;

[0021] Figure 3 This is a schematic diagram of the steel wire rope and hook of a crane drum structure with double braking interlock according to the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of a crane drum with a double braking interlock and a fixing plate and tension spring according to the present invention;

[0023] Figure 5 This invention relates to a crane drum structure with dual braking interlocking. Figure 4 A magnified structural diagram at point A;

[0024] Figure 6 This is a schematic diagram of the L-shaped connector and L-shaped adjusting component of a crane drum structure with double brake interlocking according to the present invention.

[0025] Figure 7 This is a schematic diagram of the left and right distance adjustment mechanism of a crane drum structure with double brake interlocking according to the present invention;

[0026] Figure 8 This is a schematic diagram of the connecting plate structure of a crane drum structure with dual braking interlock according to the present invention;

[0027] Figure 9 This is a schematic diagram of the folding structure of a crane drum structure with dual braking interlock according to the present invention;

[0028] In the diagram: 1. Reel; 2. Drum; 3. Outer wall; 4. Power mechanism; 5. Long arc-shaped connector; 6. L-shaped connector; 7. Moving groove; 8. L-shaped adjusting component; 9. First movable groove; 10. First ball bearing; 11. Third threaded hole; 12. Third threaded rod; 13. Sliding groove; 14. T-shaped moving component; 15. Folding component; 16. Fixing plate; 17. Tension spring; 18. First inclined plane; 19. Second inclined plane; 20. Connecting plate; 21. Connector; 22. First threaded rod; 23. Second threaded rod; 24. First guide rod; 25. Second guide rod; 26. L-shaped support plate; 27. Positioning component; 28. Second movable groove; 29. ​​Second ball bearing; 30. L-shaped extended support plate; 31. Top plate; 32. Wire rope; 33. First threaded hole; 34. Second threaded hole; 35. Hook. Detailed Implementation

[0029] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0030] like Figures 1-9 The crane drum structure shown includes two reels 1. Each reel 1 has a long arc-shaped connector 5 fixedly installed on its inner side. Each long arc-shaped connector 5 has a sliding groove 13 opened through a retraction mechanism. Each sliding groove 13 has a folding piece 15 installed through a pushing mechanism. The two reels 1 are equipped with hooks 35 through a main body mechanism. The two long arc-shaped connectors 5 are equipped with connectors 21 through a left and right adjustment mechanism. The connectors 21 are equipped with a top plate 31 through a top support mechanism.

[0031] The pushing mechanism includes a T-shaped moving member 14 movably mounted on the inner surface of each sliding groove 13, and each folding member 15 is fixedly mounted on the lower surface of the T-shaped moving member 14. A first inclined surface 18 is formed on the front surface of the folding member 15, and a second inclined surface 19 is formed on the lower surface of the folding member 15 to guide the hook 35. The hook 35 is prior art and will not be described in detail here. During the retraction process, when the hook 35 passes the second inclined surface 19, it is pressed into the two folding members 15. When the hook 35 enters between the two folding pieces 15 without contacting them, it will reach between the two first inclined surfaces 18. Due to the weight of the hook 35 itself and the upward and backward pulling effect of the wire rope 32, the hook 35 will still push the two folding pieces 15 apart and enter between the two folding pieces 15, thereby limiting the range of motion of the hook 35 and playing a buffering role, effectively reducing the swinging problem of the hook 35. When the folding piece 15 moves, it drives the T-shaped moving piece 14 to move in the sliding groove 13.

[0032] The shrinking mechanism includes an L-shaped connector 6 fixedly installed on the rear surface of each long arc-shaped connector 5, and each sliding groove 13 is opened on the upper surface of the lower end of the L-shaped connector 6. Each L-shaped connector 6 has a moving groove 7 at its upper end, and an L-shaped adjusting member 8 is movably installed on the inner surface of the moving groove 7. Each L-shaped connector 6 has a third threaded hole 11 at its upper end, and each third threaded hole 11 is opened above the moving groove 7. A third threaded rod 12 is movably installed on the inner surface of each third threaded hole 11, and each third threaded rod 12 is threadedly engaged with the third threaded hole 11. Each third threaded rod 12 is rotatably connected to the outside of the L-shaped adjusting member 8. When the reel 1 deforms, the third threaded rod 12 is screwed inward through the third threaded hole 11, which drives the L-shaped adjusting member 8 in the moving groove 7 to move inward, thereby squeezing the lower part of the outer side of the reel 1 inward and adjusting the shape of the reel 1.

[0033] Each L-shaped adjusting member 8 has a first movable groove 9 on its inner side, and a first ball bearing 10 is movably installed on the inner surface of each first movable groove 9, thereby reducing the friction between the L-shaped adjusting member 8 and the reel 1.

[0034] A fixing plate 16 is fixedly installed on the inner surface of each folding piece 15. A tension spring 17 is fixedly installed on the opposite side of the two fixing plates 16. When the hook 35 enters the inner side of the two folding pieces 15, the two tension springs 17 fixed on the fixing plates 16 retract, causing the two folding pieces 15 to move closer together, limiting the hook 35 between the two folding pieces 15 so that it will not shake randomly. Moreover, by limiting the hook 35 through the two folding pieces 15, the normal operation of the hook 35 will not be hindered when the hook 35 is lowered.

[0035] The main mechanism includes a drum 2 rotatably mounted on the inner surface of two reels 1. An outer wall 3 is fixedly mounted on the outer surface of one reel 1, and the drum 2 on that side moves through the outer wall 3. A power mechanism 4 is fixedly mounted on the inner surface of the outer wall 3, and the drum 2 on the other side is fixedly mounted to the power mechanism 4. A wire rope 32 is fixedly mounted on the outer surface of the drum 2, and a hook 35 is fixedly mounted on the other end of the wire rope 32. The power mechanism 4 and the wire rope 32 are existing technologies and will not be elaborated on here. The outer wall 3 protects the crane drum 2, and the wire rope 32 and the power mechanism 4 control the movement of the hook 35.

[0036] The left and right adjustment mechanism includes two L-shaped extended support plates 30 fixedly installed on the upper surface of the connector 21. The front L-shaped extended support plate 30 is fixedly installed on the upper rear surface of the outer long arc connector 5. The connector 21 has second threaded holes 34 on both sides. A second threaded rod 23 is movably installed in the second threaded hole 34 and is threadedly engaged with the second threaded hole 34. A second guide rod 25 is movably inserted through both sides of the connector 21. A connecting plate 20 is fixedly installed on the inner side of the second guide rod 25 and is rotatably connected to the connecting plate 20. Two L-shaped support plates 26 are fixedly installed on the upper surface of the connecting plate 20. The front L-shaped support plate 26 is fixedly installed on the upper rear surface of the inner long arc connector 5. By screwing the second threaded rod 23 inward through the second threaded hole 34, the L-shaped support plate 26 and the L-shaped extended support plate 30 support the inside of the reel 1. At the same time, the second guide rod 25 restricts the range of motion of the connecting plate 20 to prevent the connecting plate 20 from shifting when the second threaded rod 23 is screwed inward.

[0037] Each L-shaped support plate 26 and L-shaped extended support plate 30 has a positioning element 27 fixedly installed on its outer side. Each L-shaped support plate 26 and L-shaped extended support plate 30 has two second movable grooves 28 on its outer side, and the second movable grooves 28 are located below the positioning element 27. Each second movable groove 28 has a second ball bearing 29 movably installed in it. The positioning element 27 is used to position the L-shaped support plate 26 and L-shaped extended support plate 30 relative to the reel 1. The second movable grooves 28 and the second ball bearings 29 reduce the friction between the L-shaped support plate 26, L-shaped extended support plate 30 and the reel 1.

[0038] The top support mechanism includes a first threaded hole 33 on the upper surface of the connector 21. A first threaded rod 22 is movably installed on the inner surface of the first threaded hole 33 and is threadedly engaged with the first threaded hole 33. A first guide rod 24 is movably passed through the upper surface of the connector 21. A top plate 31 is fixedly installed on the upper surface of the first guide rod 24 and is rotatably connected to the top plate 31. The first threaded rod 22 is screwed upward through the first threaded hole 33, thereby applying an upward force to the outer wall 3. The first guide rod 24 restricts the range of motion of the top plate 31 to prevent the top plate 31 from rotating when the first threaded rod 22 is screwed. At the same time, a second threaded hole 34 is opened on the outside of the first threaded hole 33, and a second guide rod 25 is installed on the outside of the first guide rod 24 to avoid interference.

[0039] During use, the outer wall 3 protects the crane drum 2, and the hook 35 is moved by the wire rope 32 and the power mechanism 4. When suspended, the drum 2 is subjected to gravity, and the reel 1 undergoes slight deformation. Before suspension, the third threaded rod 12 is rotated to move the L-shaped adjusting piece 8 in the moving groove 7 inward, thereby squeezing the lower outer side of the reel 1 to increase the stability of the reel 1 during rotation. At the same time, the second threaded rod 23 is rotated to support the L-shaped support plate 26 and the L-shaped extended support plate 30 inward towards the reel 1. Meanwhile, the second guide rod 25 restricts the range of motion of the connecting plate 20 to prevent displacement of the connecting plate 20 when the second threaded rod 23 is turned. The first ball bearing 10 reduces the friction between the L-shaped adjusting piece 8 and the reel 1, and the second ball bearing 29 reduces the friction between the L-shaped support plate 26, the L-shaped extended support plate 30 and the reel 1. By turning the first threaded rod 22 upward, the top plate 31 is tightened against the inner bottom surface of the outer wall 3 to ensure stability. To ensure stability during obstacle placement, the first guide rod 24 restricts the range of motion of the top plate 31, preventing the top plate 31 from rotating when the first threaded rod 22 is turned. Simultaneously, the second threaded hole 34 is located outside the first threaded hole 33, and the second guide rod 25 is installed outside the first guide rod 24 to avoid interference. During the retraction process, when the hook 35 passes the second inclined plane 19 and is squeezed into the two folding pieces 15, it enters between them. When the hook 35 enters between the two folding pieces 15 without contact, it reaches between the two first inclined planes 18. Due to the weight of the hook 35 itself and the upward and backward pulling action of the wire rope 32, the hook 35 will still push open the two folding pieces 15, thus entering between them. This restricts the range of motion of the hook 35 and acts as a buffer, effectively reducing the swinging problem of the hook 35. Furthermore, by limiting the hook 35 through the two folding pieces 15, the normal operation of the hook 35 will not be hindered when it is lowered.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A crane drum structure with dual brake interlocking, comprising two reels (1), characterized in that: Each of the reels (1) is fixedly installed with a long arc-shaped connector (5) on its inner side. Each of the long arc-shaped connectors (5) has a sliding groove (13) opened through a shrinking mechanism. Each of the sliding grooves (13) is equipped with a folding piece (15) through a pushing mechanism. The two reels (1) are equipped with hooks (35) through a main body mechanism. The two long arc-shaped connectors (5) are equipped with connectors (21) through a left and right adjustment mechanism. The connectors (21) are equipped with a top plate (31) through a top support mechanism. The pushing mechanism includes a T-shaped moving part (14) movably mounted on the inner surface of each sliding groove (13), and each of the folding parts (15) is fixedly mounted on the lower surface of the T-shaped moving part (14). The front surface of the folding part (15) is provided with a first inclined surface (18), and the lower surface of the folding part (15) is provided with a second inclined surface (19) to guide the hook (35). The shrinking mechanism includes an L-shaped connector (6) fixedly installed on the rear surface of each long arc connector (5), and each sliding groove (13) is opened on the upper surface of the lower end of the L-shaped connector (6). Each L-shaped connector (6) has a moving groove (7) at its upper end. An L-shaped adjusting member (8) is movably installed on the inner surface of the moving groove (7). Each L-shaped connector (6) has a third threaded hole (11) at its upper end. Each third threaded hole (11) is opened above the moving groove (7). A third threaded rod (12) is movably installed on the inner surface of each third threaded hole (11). Each third threaded rod (12) is threadedly engaged with the third threaded hole (11). Each third threaded rod (12) is rotatably connected to the outside of the L-shaped adjusting member (8). Each of the L-shaped adjusting members (8) has a first movable groove (9) on its inner side, and a first ball bearing (10) is movably installed on the inner surface of each of the first movable grooves (9).

2. The crane drum structure with double brake interlocking according to claim 1, characterized in that: A fixing plate (16) is fixedly installed on the inner surface of each of the two fixing plates (16), and a tension spring (17) is fixedly installed on the opposite surfaces of the two fixing plates (16).

3. The crane drum structure with double brake interlocking according to claim 1, characterized in that: The main structure includes a drum (2) rotatably mounted on the inner surfaces of two reels (1). An outer wall (3) is fixedly mounted on the outer surface of one reel (1), and the drum (2) on that side moves through the outer wall (3). A power mechanism (4) is fixedly mounted on the inner surface of the outer wall (3), and the drum (2) on the other side is fixedly mounted to the power mechanism (4). A wire rope (32) is fixedly mounted on the outer surface of the drum (2), and a hook (35) is fixedly mounted on the other end of the wire rope (32).

4. A crane drum structure with dual brake interlocking according to claim 1, characterized in that: The left and right adjustment mechanism includes two L-shaped extended support plates (30) fixedly installed on the upper surface of the connector (21), and the front L-shaped extended support plate (30) is fixedly installed on the upper rear surface of the outer long arc connector (5). The connector (21) has a second threaded hole (34) on both sides. A second threaded rod (23) is movably installed in the second threaded hole (34), and the second threaded rod (23) is threadedly engaged with the second threaded hole (34). A second guide rod (25) is movably passed through both sides of the connector (21). A connecting plate (20) is fixedly installed on the inner side of the second guide rod (25), and the second threaded rod (23) is rotatably connected to the connecting plate (20). Two L-shaped support plates (26) are fixedly installed on the upper surface of the connecting plate (20), and the front L-shaped support plate (26) is fixedly installed on the upper rear surface of the inner long arc connector (5).

5. A crane drum structure with dual brake interlocking according to claim 4, characterized in that: A positioning element (27) is fixedly installed on the outer side of each L-shaped support plate (26) and L-shaped extended support plate (30). Two second movable grooves (28) are opened on the outer side of each L-shaped support plate (26) and L-shaped extended support plate (30), and the second movable grooves (28) are opened below the positioning element (27). A second ball bearing (29) is movably installed in each second movable groove (28).

6. A crane drum structure with dual brake interlocking according to claim 1, characterized in that: The top support mechanism includes a first threaded hole (33) on the upper surface of the connector (21), a first threaded rod (22) is movably installed on the inner surface of the first threaded hole (33), and the first threaded rod (22) is threadedly engaged with the first threaded hole (33). A first guide rod (24) is movably passed through the upper surface of the connector (21), and a top plate (31) is fixedly installed on the upper surface of the first guide rod (24), and the first threaded rod (22) is rotatably connected to the top plate (31).

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