An anti-rigid collision device and method for a tower crane

Abstract

The present invention discloses an anti-rigid collision device and method for a tower crane, including a support plate and a protection plate. The protection plate is located on the front side of the support plate. A damping rod 1 is fixedly installed at a position near the center of the bottom of the support plate. A fixing plate is fixedly connected to a position near the center of the top of the support plate. A fixing rod is fixedly connected to a position near the center of the top of the fixing plate. A groove 1 is formed inside the fixing plate. For the anti-rigid collision device of the tower crane, through the settings of the connecting plate, the buffer pressing plate, the fixing rod, the movable plate, the sponge pad, the abutting rod, the damping rod 2, the inclined rod, the support sliding sleeve, the buffer spring 1 and the support sliding rod, when the protection plate moves inward due to a collision and contacts the buffer pressing plate, the movable plate moves inside the fixing rod, the abutting rod contacts the inside of the sponge pad, and the damping rod 2 and the sponge pad effectively cancel and buffer the impact force.

Description

Technical Field

[0001] The present invention relates to the technical field of crane protection devices, and specifically to an anti-rigid collision device and method for tower cranes. Background Art

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally transports heavy objects within a certain range. Also known as a gantry crane, overhead crane, or hoist, the main feature of a tire crane is that its driving cab and lifting control cab are combined into one. It evolved from a crawler crane (crawler hoist), changing the crawler and walking support parts of the walking mechanism into a chassis with tires, overcoming the drawback of the crawler plates of the crawler crane damaging the road surface. It belongs to a material handling machine. A bridge crane is a lifting equipment that spans across workshops, warehouses, and yards to lift materials. The bridge of the bridge crane runs longitudinally along the tracks laid on the high racks on both sides, making full use of the space under the bridge to lift materials without being hindered by ground equipment. It is the most widely used and most numerous type of lifting machine. Currently, cranes use protection devices to prevent key parts on the crane from being rigidly collided.

[0003] The comparative document (an anti-rigid collision device for tower cranes, CN115321393A) is provided with a protection device. During use, the fixed seat is installed near the key parts on the crane, and the protection device is extended to both sides of the key parts through the connecting support rods. When the crane is operating and an obstacle moves towards its key parts, it first contacts the outer protection plate. After the outer protection plate is impacted, it deforms and squeezes the protection airbag. After the protection airbag is squeezed, the air pressure inside it increases, and the gas enters the control sleeve and squeezes the sliding plug head inside the control sleeve. The impact is buffered by the elastic force generated by the sliding plug head squeezing the anti-slip spring and the elastic force generated by the control sleeve moving inside the extrusion sleeve and squeezing the buffer spring, which is convenient for protecting the key parts of the crane from being directly collided and damaged, and has good protection performance.

[0004] However, for the protection device provided in the comparative document, the protection airbag is prone to deformation, resulting in the protection airbag being unable to return to its initial state, which will affect the next protection effect and has a low service life, making it inconvenient for users to use in the long term. Summary of the Invention

[0005] (I) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the present invention provides an anti-rigid collision device and method for a tower crane to solve the problems in the above-mentioned background art that in the protection device set in the comparative document, the protection airbag is prone to deformation, resulting in the protection airbag not being able to return to its initial state, which will affect the next protection effect, has a low service life, and is not convenient for users to use in the long term.

[0007] (II) Technical solution

[0008] To achieve the above object, the present invention provides the following technical solution: An anti-rigid collision device for a tower crane, including a support plate and a protection plate. The protection plate is located in front of the support plate. A damping rod I is fixedly installed at a position near the center of the bottom of the support plate. A fixing plate is fixedly connected to a position near the center of the top of the support plate. A fixing rod is fixedly connected to a position near the center of the top of the fixing plate. A groove I is opened inside the fixing plate. Moving grooves I are opened at positions near the front, back, left, and right ends on both sides of the top of the fixing plate. Support sliding rods are fixedly connected to positions near both sides of the bottom of the groove I. A support sliding sleeve is sleeved and slidably connected to one side of the surface of the support sliding rod. A buffer spring I is sleeved on the surface of the support sliding rod. The top of the support sliding sleeve is fixedly connected to an arc-shaped bracket I. The top of the arc-shaped bracket I is movably connected to an inclined rod. The top of the inclined rod is movably connected to an arc-shaped bracket II. A connecting plate is fixedly connected to the top inside the protection plate. The top of the arc-shaped bracket II is fixedly connected to the bottom of the connecting plate. A groove II is opened inside the fixing rod. An activity plate is arranged at the top of the fixing rod. A buffer pressing plate is fixedly connected to the top of the activity plate. The bottom of the activity plate penetrates into the inside of the groove II. A resisting rod is fixedly connected to a position near the center of the bottom of the activity plate. A sponge pad is fixedly installed at a position near the center of the inner bottom of the groove II. Moving plates are fixedly connected to positions near the four corners of the bottom of the connecting plate. A tooth opening is opened at a position near the center of one side of the moving plate. A gear is arranged at one end of the moving plate. The gear meshes with the tooth opening. An activity groove is opened at a position near the center of the bottom of the moving plate. A sliding plate is slidably connected to the inside of the activity groove. A support rod is fixedly connected to a position near the center of the bottom of the sliding plate.

[0009] Preferably, an activity sleeve is sleeved on the outer side of the damping rod I at a position near the bottom. Reinforcing plates are fixedly connected to both sides of the activity sleeve. A support frame is fixedly connected to one side of the top of the reinforcing plate. The top of the support frame is fixedly connected to the bottom of the support plate.

[0010] Preferably, limit strips are fixedly connected to both the top and bottom of the surface of the damping rod I.

[0011] Preferably, the moving groove I penetrates through the groove I, and the top of the support sliding sleeve penetrates to the outside of the moving groove I and is slidably connected to the moving groove I.

[0012] Preferably, both sides of the first buffer spring are fixedly connected to one side of the support sliding sleeve and one end of the support sliding rod respectively.

[0013] Preferably, the bottom of the outer side of the movable plate is slidably connected to the inner wall of the fixed rod.

[0014] Preferably, anti-collision pads are fixedly connected to both sides and the positions near both sides of the top of the protection plate.

[0015] Preferably, damping rods II are fixedly connected to the four corners of the bottom of the movable plate, and the bottoms of the damping rods II are fixedly connected to the bottom inside the second groove.

[0016] Preferably, a movable shaft is arranged inside the gear ring. The front side and the rear side of the movable shaft are fixedly connected to the inner walls of the front side and the rear side of the protection plate respectively. The gear is sleeved and slidably connected to the movable shaft.

[0017] Preferably, the bottom of the support rod penetrates to the outside of the moving plate and is fixedly connected to the top of the support plate. A second buffer spring is sleeved on the surface of the support rod. The top and the bottom of the second buffer spring are fixedly connected to the moving plate and the support plate respectively.

[0018] (III) Beneficial effects

[0019] The present invention provides an anti-rigid collision device and method for a tower crane. The following beneficial effects are achieved:

[0020] The anti-rigid collision device and method for tower cranes, through the settings of connecting plates, buffer pressure plates, fixed rods, movable plates, sponge pads, abutting rods, damping rods II, inclined rods, support sliding sleeves, buffer springs I and support sliding rods, when the protective plate moves inward in contact with the buffer pressure plate due to a collision, the movable plate moves inside the fixed rod, the abutting rod contacts the inside of the sponge pad, and the damping rod II and the sponge pad effectively offset and buffer the impact force. At the same time, the relative movement between the first arc-shaped bracket and the second arc-shaped bracket causes the inclined rod to tilt, and the inclined rod drives the second arc-shaped bracket and the support sliding sleeve to move on the support sliding rod, and the buffer spring I buffers its movement, thereby reducing the impact force. At the same time, through the settings of the moving plate, tooth openings, movable shafts, gears, movable grooves, sliding plates, support rods and buffer springs II, when the protective plate moves towards the support plate, the tooth openings can be engaged with the gears and the buffer springs II can be used to assist in buffering the impact force, and at the same time support the protective plate. The settings of the damping rod I, movable sleeves, reinforcement plates and support frames can buffer the support plate when the impact force is too large and causes the support plate to move, thereby effectively improving the anti-rigid collision effect of the tower crane, avoiding the situation where the protective structure is deformed and cannot be restored, and the setting of the multiple buffer protection structures can improve the service life of the protection structure, facilitating long-term use by users. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present invention;

[0022] Figure 2 is the present invention Figure 1 is a partial enlarged schematic view of A in the present invention;

[0023] Figure 3 is the present invention Figure 1 is a partial enlarged schematic view of B in the present invention;

[0024] Figure 4 is the present invention Figure 1 is a partial enlarged schematic view of C in the present invention;

[0025] Figure 5 is a structural cross-sectional view of the fixed rod of the present invention;

[0026] Figure 6 is a structural cross-sectional view of the moving plate of the present invention;

[0027] Figure 7 is a three-dimensional structural view of the fixed plate of the present invention.

[0028] In the figure: 1, support plate; 2, protection plate; 3, first damping rod; 4, movable sleeve; 5, reinforcement plate; 6, support frame; 7, fixed plate; 8, fixed rod; 9, first groove; 10, first moving groove; 11, support sliding rod; 12, support sliding sleeve; 13, first buffer spring; 14, first arc-shaped bracket; 15, inclined rod; 16, second arc-shaped bracket; 17, second groove; 18, movable plate; 19, buffer pressing plate; 20, sponge pad; 21, abutting rod; 22, second damping rod; 23, connecting plate; 24, moving plate; 25, tooth opening; 26, movable shaft; 27, gear; 28, moving groove; 29, sliding plate; 30, support rod; 31, second buffer spring. Detailed implementation manner

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figure 1-7, the present invention provides a technical solution: an anti-rigid collision device for a tower crane, including a support plate 1 and a protection plate 2. The protection plate 2 is located on the front side of the support plate 1. A damping rod 1 is fixedly installed at the center position of the bottom of the support plate 1. A fixing plate 7 is fixedly connected to the center position of the top of the support plate 1. A fixing rod 8 is fixedly connected to the center position of the top of the fixing plate 7. A groove 9 is formed inside the fixing plate 7. Moving grooves 10 are formed at the front and rear ends of both sides of the top of the fixing plate 7. Support slide rods 11 are fixedly connected to both sides of the bottom of the groove 9. A support slide sleeve 12 is sleeved and slidably connected to one side of the surface of the support slide rod 11. A buffer spring 13 is sleeved on the surface of the support slide rod 11, which can buffer the movement of the support slide sleeve 12. The top end of the support slide sleeve 12 is fixedly connected to an arc-shaped bracket 14. The top of the arc-shaped bracket 14 is movably connected to an inclined rod 15. The top of the inclined rod 15 is movably connected to an arc-shaped bracket 16. The inclination of the inclined rod 15 drives the arc-shaped bracket 14, causing the support slide sleeve 12 to move on the support slide rod 11 inside the fixing plate 7. The buffer spring 13 buffers and decelerates the movement of the support slide sleeve 12, thereby reducing the impact force during collision. A connecting plate 23 is fixedly connected to the top inside the protection plate 2. The top of the arc-shaped bracket 16 is fixedly connected to the bottom of the connecting plate 23. A groove 17 is formed inside the fixing rod 8. An activity plate 18 is arranged at the top of the fixing rod 8. A buffer pressing plate 19 is fixedly connected to the top of the activity plate 18. The bottom of the activity plate 18 penetrates into the inside of the groove 17. A resisting rod 21 is fixedly connected to the center position of the bottom of the activity plate 18. A sponge pad 20 is fixedly installed at the center position of the inner bottom of the groove 17. Moving plates 24 are fixedly connected to the four corners of the bottom of the connecting plate 23. A tooth opening 25 is formed at the center position of one side of the moving plate 24. A gear 27 is arranged at one end of the moving plate 24. The gear 27 meshes with the tooth opening 25. An activity groove 28 is formed at the center position of the bottom of the moving plate 24. A slide plate 29 is slidably connected to the inside of the activity groove 28. A support rod 30 is fixedly connected to the center position of the bottom of the slide plate 29.

[0031] In the present invention: An activity sleeve 4 is sleeved on the outer side of the damping rod 1 at the bottom position. Reinforcing plates 5 are fixedly connected to both sides of the activity sleeve 4. A support frame 6 is fixedly connected to one side of the top of the reinforcing plate 5. The top of the support frame 6 is fixedly connected to the bottom of the support plate 1, which can support the support plate 1.

[0032] In the present invention: Limit strips are fixedly connected to both the top and bottom of the surface of the damping rod 1, which can limit the movement of the activity sleeve 4, so that it can only move at the bottom position of the damping rod 1.

[0033] In the present invention: There is a through connection between the first moving groove 10 and the first groove 9. The top of the supporting sliding sleeve 12 penetrates to the outside of the first moving groove 10 and is slidably connected to the first moving groove 10, which can limit the movement of the supporting sliding sleeve 12.

[0034] In the present invention: Both sides of the first buffer spring 13 are fixedly connected to one side of the supporting sliding sleeve 12 and one end of the supporting sliding rod 11 respectively. When the supporting sliding sleeve 12 moves, it can buffer the movement of the supporting sliding sleeve 12.

[0035] In the present invention: The bottom of the outer side of the movable plate 18 is slidably connected to the inner wall of the fixed rod 8, which can limit the movable plate 18 and facilitate the movement of the movable plate 18 inside the fixed rod 8.

[0036] In the present invention: Anti-collision pads are fixedly connected to both sides and the positions near both sides at the top of the protective plate 2, which can play an anti-collision and buffering effect.

[0037] In the present invention: Damping rods two 22 are fixedly connected to the four corners at the bottom of the movable plate 18. The bottom of the damping rods two 22 is fixedly connected to the bottom inside the second groove 17, which can buffer the movement of the movable plate 18 and offset the force generated by the collision at the same time.

[0038] In the present invention: A movable shaft 26 is arranged inside the inner ring of the gear 27. The front side and the rear side of the movable shaft 26 are fixedly connected to the inner walls of the front side and the rear side of the protective plate 2 respectively. The gear 27 is sleeved and slidably connected to the movable shaft 26, which can facilitate the rotation of the gear 27 driven by the tooth opening 25 on one side of the movable plate 24, thereby slowing down the moving speed of the movable plate 24.

[0039] In the present invention: The bottom of the support rod 30 penetrates to the outside of the movable plate 24 and is fixedly connected to the top of the support plate 1. A second buffer spring 31 is sleeved on the surface of the support rod 30. The top and the bottom of the second buffer spring 31 are fixedly connected to the movable plate 24 and the support plate 1 respectively, which can buffer the movement of the movable plate 24.

[0040] During use: When the protection plate 2 is collided, first, the anti-collision pad on the surface of the protection plate 2 initially buffers the force generated by the collision. Then, the protection plate 2 moves towards one side of the support plate 1, causing the connecting plate 23 to drive the moving plate 24 to move on the surface of the support rod 30, enabling the sliding plate 29 to move in the movable groove 28 formed in the moving plate 24, causing the second buffer spring 31 to contract, and the gear 27 to move inside the tooth opening 25. At the same time, the first arc-shaped bracket 14 causes the inclined rod 15 to tilt, and the inclined rod 15 drives the second arc-shaped bracket 16 and the support sliding sleeve 12 to move on the surface of the support sliding rod 11, causing the first buffer spring 13 to contract. When the connecting plate 23 contacts the buffer pressure plate 19, the buffer pressure plate 19 drives the movable plate 18 to move inside the fixed rod 8, causing the abutting rod 21 to move into the sponge pad 20 and contact the sponge pad 20, and the second damping rod 22 to contract. Through the buffering and resilience of the first buffer spring 13, the second buffer spring 31, and the second damping rod 22, the impact force is buffered and weakened. When the impact force is large enough to cause the support plate 1 to move, at the same time, the support frame 6 drives the reinforcement plate 5 to cause the movable sleeve 4 to move at the bottom position of the first damping rod 3, and the first damping rod 3 buffers and cancels the impact force.

[0041] It should be noted that in the description of the invention, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc. is the description of the structure of the present invention based on the figures shown, and is only for the convenience of describing the present invention simply, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

[0042] Regarding "first" and "second" in this technical solution, they are only used to distinguish the names of corresponding structures with the same or similar structures, or structures with similar functions, rather than arranging the importance of these structures, nor having an order, or comparing sizes, or other meanings.

[0043] In addition, unless otherwise clearly specified and defined, the terms "installation" and "connection" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two structures. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the general idea of the present invention and in connection with the specific context of this solution.

Claims

1. An anti-rigid collision device for a tower crane, comprising a support plate (1) and a protection plate (2), the protection plate (2) is located on the front side of the support plate (1), a first damping rod (3) is fixedly installed at a position close to the center at the bottom of the support plate (1), a fixing plate (7) is fixedly connected at a position close to the center at the top of the support plate (1), a fixing rod (8) is fixedly connected at a position close to the center at the top of the fixing plate (7), a first groove (9) is formed inside the fixing plate (7), first moving grooves (10) are formed at positions close to the front and rear ends on both sides at the top of the fixing plate (7), and support sliding rods (11) are fixedly connected at positions close to both sides at the bottom of the first groove (9), characterized in that: On one side of the surface of the support slide bar (11), a support slide sleeve (12) is sleeved and slidably connected. A first buffer spring (13) is sleeved on the surface of the support slide bar (11). The top of the support slide sleeve (12) is fixedly connected to a first arc-shaped bracket (14). The top of the first arc-shaped bracket (14) is movably connected to an inclined rod (15). The top of the inclined rod (15) is movably connected to a second arc-shaped bracket (16). A connecting plate (23) is fixedly connected to the top inside the protection plate (2). The top of the second arc-shaped bracket (16) is fixedly connected to the bottom of the connecting plate (23). A second groove (17) is formed inside the fixed rod (8). An activity plate (18) is arranged at the top of the fixed rod (8). A buffer pressing plate (19) is fixedly connected to the top of the activity plate (18). The bottom of the activity plate (18) penetrates into the inside of the second groove (17). A resisting rod (21) is fixedly connected to the center position of the bottom of the activity plate (18). A sponge pad (20) is fixedly installed at the center position of the inner bottom of the second groove (17). Moving plates (24) are fixedly connected to the four corner positions of the bottom of the connecting plate (23). A tooth opening (25) is formed at the center position of one side of the moving plate (24). A gear (27) is arranged at one end of the moving plate (24). The gear (27) meshes with the tooth opening (25). An activity groove (28) is formed at the center position of the bottom of the moving plate (24). A slide plate (29) is slidably connected to the inside of the activity groove (28). A support rod (30) is fixedly connected to the center position of the bottom of the slide plate (29).

2. The anti-rigid collision device for a tower crane according to claim 1, characterized in that: An activity sleeve (4) is sleeved on the outer side of the bottom of the first damping rod (3). Reinforcing plates (5) are fixedly connected to both sides of the activity sleeve (4). A support frame (6) is fixedly connected to one side of the top of the reinforcing plate (5). The top of the support frame (6) is fixedly connected to the bottom of the support plate (1).

3. The anti-rigid collision device for a tower crane according to claim 1, characterized in that: Limit strips are fixedly connected to both the top and the bottom of the surface of the first damping rod (3).

4. The anti-rigid collision device for a tower crane according to claim 1, characterized in that: The first moving groove (10) penetrates through the first groove (9). The top of the support slide sleeve (12) penetrates to the outside of the first moving groove (10) and is slidably connected to the first moving groove (10).

5. The anti-rigid collision device for a tower crane according to claim 1, characterized in that: Both sides of the first buffer spring (13) are fixedly connected to one side of the support slide sleeve (12) and one end of the support slide bar (11) respectively.

6. The anti-rigid collision device for a tower crane according to claim 1, characterized in that: The outer bottom of the activity plate (18) is slidably connected to the inner wall of the fixed rod (8).

7. The anti-rigid collision device for a tower crane according to claim 1, characterized in that: Anti-collision pads are fixedly connected to both sides and the two side positions of the top of the protection plate (2).

8. The anti-rigid collision device for a tower crane according to claim 1, characterized in that: Second damping rods (22) are fixedly connected to the four corner positions of the bottom of the activity plate (18). The bottoms of the second damping rods (22) are fixedly connected to the inner bottom of the second groove (17).

9. The anti-rigid collision device for a tower crane according to claim 1, characterized in that: The bottom of the support rod (30) penetrates to the outside of the moving plate (24) and is fixedly connected to the top of the support plate (1). A second buffer spring (31) is sleeved on the surface of the support rod (30). The top and the bottom of the second buffer spring (31) are fixedly connected to the moving plate (24) and the support plate (1) respectively.

10. A method for preventing rigid collision of a tower crane, characterized in that: It includes the anti-rigid collision device for tower cranes described in any one of claims 1 to 9 and the following method: when the protective plate (2) is collided, first, the anti-collision pad on the surface of the protective plate (2) initially buffers the force generated by the collision, and then the protective plate (2) moves towards one side of the support plate (1), so that the connecting plate (23) drives the moving plate (24) to move on the surface of the support rod (30), so that the sliding plate (29) moves in the movable groove (28) opened in the moving plate (24), so that the second buffer spring (31) contracts, and the gear (27) moves inside the tooth opening (25). At the same time, the first arc-shaped bracket (14) makes the inclined rod (15) inclined, and the inclined rod (15) drives the second arc-shaped bracket (16) and the support sliding sleeve (12) to move on the surface of the support sliding rod (11), so that the first buffer spring (13) contracts. When the connecting plate (23) touches the buffer pressure plate (19), the buffer pressure plate (19) drives the movable plate (18) to move inside the fixed rod (8), so that the abutting rod (21) moves into the sponge pad (20) and contacts the sponge pad (20), and the second damping rod (22) contracts. Through the buffering and resilience of the first buffer spring (13), the second buffer spring (31) and the second damping rod (22), the impact force is buffered and weakened. When the impact force is large enough to move the support plate (1), at the same time, the support frame (6) drives the reinforcement plate (5) so that the movable sleeve (4) moves at the bottom position of the first damping rod (3), and the impact force is buffered and offset by the first damping rod (3).

Images