Tower crane jacking mechanism with high safety

Abstract

The utility model discloses a tower crane jacking mechanism with high safety in the field of jacking mechanisms, which comprises a plurality of support frames spliced and mounted at intervals along the vertical direction, a tower crane main body is mounted at the upper end of a movable frame, and a second frame-shaped plate is fixed on the lower end surface of the movable frame and positioned on the outer side of the corresponding support frame. First moving plates are fixed to the lower ends of output rods of the first hydraulic cylinders, second moving plates are fixed to the ends, close to each other, of output rods of the second hydraulic cylinders, and second limiting blocks are fixed to the middles of the opposite faces of the second moving plates. According to the tower crane, the movable frame and the supporting frame can be continuously locked and limited, the operation of jacking the tower crane main body is convenient and fast, the tower crane main body can be safely jacked, and the tower crane main body can be conveniently used.

Description

Technical Field

[0001] The utility model relates to the field of jacking mechanisms, in particular to a jacking mechanism with high safety for tower cranes. Background Technique

[0002] The tower crane is abbreviated as the tower hoist and is also known as the tower crane. It refers to a rotary crane with a jib installed on the upper part of a tall tower body. The tower crane has a large working space and is mainly used for the vertical and horizontal transportation of materials and the installation of building components in building construction. The tower crane mainly consists of three parts: a metal structure, a working mechanism, and an electrical system.

[0003] When the height of the tower crane does not meet the working requirements, the tower crane needs to be jacked up. When the tower crane needs to be jacked up, the tower crane is jacked up by a jacking mechanism, so that the tower crane moves upward to adjust the height of the tower crane upward, so that the height of the tower crane can meet the working requirements.

[0004] However, when the existing jacking mechanism is in use, during the process of jacking up the tower crane, it is not easy to ensure continuous locking and limiting between the frame on the tower crane and the jacking mechanism, and the operation of jacking up the tower crane is relatively cumbersome, which is not conducive to safely jacking up the tower crane and is not convenient for using the jacking mechanism.

[0005] Therefore, we propose a jacking mechanism with high safety for tower cranes. Content of the Utility Model

[0006] The purpose of the utility model is to provide a jacking mechanism with high safety for tower cranes to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A jacking mechanism with high safety for tower cranes, including several support frames spliced and installed at intervals in the vertical direction. Fixed blocks are installed in the middle of both sides of the support frames. A moving frame is slidably installed along the vertical direction on the outside of the support frame at the top. The upper end of the moving frame is installed with a tower crane main body. A retaining hole is opened at one end of the moving frame. On the lower surface of the moving frame, a second frame-shaped plate is fixed on the outside of the corresponding support frame. In the middle of both sides of the upper surface of the second frame-shaped plate, first hydraulic cylinders are installed. The output rods of the first hydraulic cylinders penetrate through the upper surface and the lower surface at the corresponding positions on the second frame-shaped plate. At the lower ends of the output rods of the first hydraulic cylinders, first moving plates are fixed. In the middle of the surfaces of the first moving plates away from each other, second hydraulic cylinders are installed. The output rods of the second hydraulic cylinders penetrate through both sides of the middle of the first moving plates. At the ends of the output rods of the second hydraulic cylinders close to each other, second moving plates are fixed. In the middle of the opposite surfaces of the second moving plates, second limiting blocks are fixed. In the middle of the fixed blocks, second limiting grooves matching the second limiting blocks are correspondingly opened.

[0009] As a further scheme of the present utility model: At the middle of the upper side and the lower side of the opposite surfaces of the second moving plates, first limiting blocks are fixed. At the middle of the upper side and the lower side of the fixed blocks, first limiting grooves matching the first limiting blocks are correspondingly opened. At the middle of both ends of the opposite surfaces of the second moving plates, clamping blocks are fixed. On the fixed blocks, clamping grooves matching the clamping blocks are correspondingly opened.

[0010] By adopting the above technical scheme: The setting of the first limiting blocks and the first limiting grooves helps to limit between the second moving plate and the fixed block.

[0011] As a further scheme of the present utility model: Between the upper end of the moving frame and the lower surface of the tower crane main body, they are rotatably installed through a gear set. The retaining hole penetrates through the inner side and the outer side of the corresponding position on the moving frame. The retaining hole on the moving frame is larger than the support frame.

[0012] By adopting the above technical scheme: The setting of the retaining hole on the moving frame helps to send the support frame to the inner side of the moving frame.

[0013] As a further scheme of the present utility model: At the middle of the surface of the second frame-shaped plate close to one end of the retaining hole, a feeding plate is fixed. Between both sides of the upper surface of the feeding plate and the edge parts of the corresponding sides of the upper surface of the second frame-shaped plate, guardrails are jointly fixed.

[0014] By adopting the above technical scheme: The setting of the second frame-shaped plate can fix and limit the feeding plate.

[0015] As a further solution of the present utility model: a first frame plate is fixed to the upper end of the outer side of the movable frame, the first hydraulic cylinders are all in a vertical state, and the upper ends of the first hydraulic cylinders are respectively installed between the middle parts of the corresponding sides of the lower surface of the first frame plate.

[0016] By adopting the above technical solution: the setting of the movable frame can support and limit the first frame plate.

[0017] As a further solution of the present utility model: the first moving plates are all in a horizontal state, both ends of the upper surface of the first moving plates are fixed with first limiting rods, the first limiting rods are all in a vertical state, and the first limiting rods all penetrate through the upper surface and the lower surface of the corresponding positions on the second frame plate.

[0018] By adopting the above technical solution: the setting of the first limiting rods can limit the first moving plates, which is convenient for stably moving the first moving plates.

[0019] As a further solution of the present utility model: the second moving plates are all in a horizontal state, both middle parts of the two ends of the surfaces of the second moving plates away from each other are fixed with second limiting rods, and the second limiting rods all penetrate through the two side surfaces of the corresponding positions on the first moving plates.

[0020] By adopting the above technical solution: the setting of the second limiting rods can limit the second moving plates, which is convenient for stably moving the second moving plates.

[0021] As a further solution of the present utility model: the four corners between the adjacent ends of the support frames close to each other are all fixedly installed by bolts, and the lower end of the support frame at the bottom is installed with a base by bolts.

[0022] By adopting the above technical solution: the setting of the base can support and limit the support frame, which helps to stably use the support frame.

[0023] Compared with the prior art, the beneficial effects of the present utility model are:

[0024] In the present utility model, the fixing block can support and limit the second frame plate and the movable frame through the second limiting groove, the second limiting block, the second moving plate, the second hydraulic cylinder, the first moving plate and the first hydraulic cylinder. When the main body of the tower crane is jacked up during use, it helps to ensure continuous locking and limiting between the movable frame and the support frame, and the operation of jacking up the main body of the tower crane is relatively convenient, which helps to safely jack up the main body of the tower crane, so as to facilitate the use of the main body of the tower crane.

[0025] 2. In the present utility model, the fixed block can support and limit the second moving plate through the first limiting groove, the first limiting block, the second limiting groove, the second limiting block, the clamping groove and the clamping block, and the second frame-shaped plate can limit the first moving plate through the first limiting rod, which is convenient for stably moving the first moving plate. The first moving plate can limit the second moving plate through the second limiting rod, which helps to stably move the second moving plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural view of the present utility model;

[0027] Figure 2 is a schematic structural view of the base of the present utility model;

[0028] Figure 3 is a schematic structural view of the second moving plate of the present utility model;

[0029] Figure 4 is a schematic structural view of the first frame-shaped plate of the present utility model;

[0030] Figure 5 is a schematic structural view of the fixed block of the present utility model;

[0031] Figure 6 is a schematic structural view of the first limiting rod of the present utility model.

[0032] In the figure: 1, main body of tower crane; 2, support frame; 3, moving frame; 4, first frame-shaped plate; 5, second frame-shaped plate; 6, retention hole; 7, discharge plate; 8, first hydraulic cylinder; 9, second hydraulic cylinder; 10, first moving plate; 11, second moving plate; 12, first limiting rod; 13, second limiting rod; 14, first limiting block; 15, second limiting block; 16, clamping block; 17, fixed block; 18, first limiting groove; 19, second limiting groove; 20, clamping groove; 21, base. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] Please refer to Figures 1 to 6, in the embodiment of the present utility model, a jacking mechanism with high safety for a tower crane includes a plurality of support frames 2 spliced and installed at intervals in the vertical direction. Fixed blocks 17 are installed in the middle of both sides of the support frame 2. A moving frame 3 is slidably installed along the vertical direction on the outside of the support frame 2 at the top. The upper end of the moving frame 3 is installed with a tower crane main body 1. A retaining hole 6 is opened at one end of the moving frame 3. A second frame-shaped plate 5 is fixed on the lower surface of the moving frame 3 at the outside of the corresponding support frame 2. First hydraulic cylinders 8 are installed in the middle of both sides of the upper surface of the second frame-shaped plate 5. The output rods of the first hydraulic cylinders 8 penetrate through the upper surface and the lower surface of the corresponding positions on the second frame-shaped plate 5. The lower ends of the output rods of the first hydraulic cylinders 8 are both fixed with first moving plates 10. Second hydraulic cylinders 9 are installed in the middle of the surfaces on the sides away from each other of the first moving plates 10. The output rods of the second hydraulic cylinders 9 penetrate through both sides of the middle of the first moving plates 10. The ends of the output rods of the second hydraulic cylinders 9 close to each other are both fixed with second moving plates 11. Second limiting blocks 15 are fixed in the middle of the opposite surfaces of the second moving plates 11. Second limiting grooves 19 matching the second limiting blocks 15 are correspondingly opened in the middle of the fixed blocks 17. The fixed blocks 17 can support and limit the second frame-shaped plate 5 and the moving frame 3 through the second limiting grooves 19, the second limiting blocks 15, the second moving plates 11, the second hydraulic cylinders 9, the first moving plates 10 and the first hydraulic cylinders 8. When the tower crane main body 1 is jacked up during use, it helps to ensure continuous locking and limiting between the moving frame 3 and the support frame 2, and the operation of jacking up the tower crane main body 1 is relatively convenient, which helps to safely jack up the tower crane main body 1 for the use of the tower crane main body 1.

[0035] Among them, first limiting blocks 14 are fixed in the middle of the upper sides and the lower sides of the opposite surfaces of the second moving plates 11. First limiting grooves 18 matching the first limiting blocks 14 are correspondingly opened in the middle of the upper sides and the lower sides of the fixed blocks 17. Blocks 16 are fixed in the middle of both ends of the opposite surfaces of the second moving plates 11. Slots 20 matching the blocks 16 are correspondingly opened on the fixed blocks 17. The first limiting blocks 14 and the first limiting grooves 18 help to limit between the second moving plates 11 and the fixed blocks 17. The upper end of the moving frame 3 and the lower surface of the tower crane main body 1 are rotatably installed through a gear set. The retaining hole 6 penetrates through the inner side and the outer side of the corresponding position on the moving frame 3. The retaining hole 6 on the moving frame 3 is larger than the support frame 2. The retaining hole 6 on the moving frame 3 helps to send the support frame 2 to the inner side of the moving frame 3.

[0036] In the middle of the surface of one end of the second frame-shaped plate 5 close to the retention hole 6, a material placing plate 7 is fixed. On both sides of the upper surface of the material placing plate 7, guardrails are commonly fixed between the corresponding edge parts of the upper surface of the second frame-shaped plate 5. The second frame-shaped plate 5 can fix and limit the material placing plate 7; at the upper end of the outer side of the moving frame 3, a first frame-shaped plate 4 is fixed. The first hydraulic cylinders 8 are all in a vertical state. The upper ends of the first hydraulic cylinders 8 are respectively installed between the middle parts of the corresponding sides of the lower surface of the first frame-shaped plate 4. The moving frame 3 can support and limit the first frame-shaped plate 4; the first moving plates 10 are all in a horizontal state. At both ends of the upper surface of the first moving plates 10, first limiting rods 12 are fixed. The first limiting rods 12 are all in a vertical state. The first limiting rods 12 all penetrate through the upper surface and the lower surface of the corresponding positions on the second frame-shaped plate 5. The first limiting rods 12 can limit the first moving plates 10, facilitating the stable movement of the first moving plates 10.

[0037] The second moving plates 11 are all in a horizontal state. At the middle parts of both ends of the surfaces of the second moving plates 11 away from each other, second limiting rods 13 are fixed. The second limiting rods 13 all penetrate through the two surfaces of the corresponding positions on the first moving plates 10. The second limiting rods 13 can limit the second moving plates 11, facilitating the stable movement of the second moving plates 11; between the four corners of the adjacent support frames 2 close to each other at one end, they are all fixedly installed by bolts. At the lower end of the support frame 2 at the bottom, a base 21 is installed by bolts. The base 21 can support and limit the support frame 2, contributing to the stable use of the support frame 2.

[0038] The working principle of the present utility model is as follows: During use, the base 21 is stably placed at the position where it needs to be used, such that the lower surface of the base 21 is in a state of being matched and adhered to the external position where it needs to be used. Further, the base 21 and the external position where it needs to be used are installed, contributing to the stable use of the base 21. The support frame 2 is aligned with the middle part above the base 21, and the support frame 2 and the base 21 are installed and limited by bolts. Further, the support frames 2 are spliced and installed in the vertical direction by bolts, so as to facilitate the stable use of the support frame 2.

[0039] When it is necessary to limit the movement between the moving frame 3 and the corresponding support frame 2, the first hydraulic cylinder 8 between the first frame plate 4 and the second frame plate 5 is opened. The first frame plate 4 and the second frame plate 5 can support and limit the first hydraulic cylinder 8, which helps to stably use the first hydraulic cylinder 8. In the state where the first hydraulic cylinder 8 is opened, the output rod of the first hydraulic cylinder 8 can drive the first moving plate 10 to move in the vertical direction. When the first moving plate 10 moves in the vertical direction, it can drive the second moving plate 11 to move in the vertical direction through the second hydraulic cylinder 9 and the second limiting rod 13. After moving the first moving plate 10 to correspond to the second moving plate 11, the second hydraulic cylinder 9 on the first moving plate 10 is opened. The first moving plate 10 can support and limit the second hydraulic cylinder 9, which is convenient for stably using the second hydraulic cylinder 9.

[0040] In the state where the second hydraulic cylinder 9 is opened, the output rod of the second hydraulic cylinder 9 can drive the second moving plate 11 to move towards the fixed block 17. When the second moving plate 11 moves, it can drive the second limiting rod 13 to move on the first moving plate 10. The first moving plate 10 can limit the second moving plate 11 through the second limiting rod 13, which helps to stably move the second moving plate 11. When the second moving plate 11 moves, it can drive the first limiting block 14, the second limiting block 15 and the clamping block 16 to move towards the fixed block 17, so that the first limiting block 14 moves into the first limiting groove 18, the second limiting block 15 moves into the second limiting groove 19, and the clamping block 16 moves into the clamping groove 20. The support frame 2 can fix and limit the fixed block 17. The fixed block 17 can support and limit the second moving plate 11 through the first limiting groove 18, the first limiting block 14, the second limiting groove 19, the second limiting block 15, the clamping groove 20 and the clamping block 16. The second moving plate 11 can support and limit the first moving plate 10 through the second limiting rod 13 and the second hydraulic cylinder 9. The first moving plate 10 can support and limit the second frame plate 5 through the first hydraulic cylinder 8 and the first limiting rod 12. The second frame plate 5 can support and limit the moving frame 3, so as to limit the movement between the moving frame 3 and the corresponding support frame 2.

[0041] When it is necessary to move the tower crane body 1 upward by jacking, the first hydraulic cylinders 8 on both sides are opened. In the state where the first hydraulic cylinders 8 are opened, when the output rods of the first hydraulic cylinders 8 extend, they will support the moving frame 3 upward through the first frame plate 4 and the second frame plate 5, so that the moving frame 3 moves upward. After the moving frame 3 moves to the upper side of the assembled support frame 2, the support frame 2 that needs to be assembled externally is correspondingly placed on the upper side of the discharge plate 7. The support frame 2 on the upper side of the discharge plate 7 is placed into the moving frame 3 through the retaining holes 6 on the moving frame 3, and the lower end of the support frame 2 that needs to be assembled is correspondingly aligned with the upper end of the assembled support frame 2. Bolts are used to assemble and install between the support frame 2 that needs to be assembled and the assembled support frame 2. Further, the first hydraulic cylinders 8 are opened to further support the moving frame 3 upward to move the moving frame 3 upward.

[0042] Open the second hydraulic cylinder 9 on one side. Through the second hydraulic cylinder 9, the second moving plate 11 drives the first limiting block 14, the second limiting block 15 and the clamping block 16 to separate from the first limiting groove 18, the second limiting groove 19 and the clamping groove 20 on the corresponding fixed block 17. After separation, the first limiting block 14, the second limiting block 15, the clamping block 16 and the second moving plate 11 on the other side will support the moving frame 3. Further, open the first hydraulic cylinder 8 on the side of the second moving plate 11 close to the separation from the fixed block 17, so that the first moving plate 10 moves upward. After moving the first moving plate 10 to correspond to the fixed block 17 on the top support frame 2, open the second hydraulic cylinder 9, so that the second moving plate 11 drives the corresponding first limiting block 14, the second limiting block 15 and the clamping block 16 to insert into the first limiting groove 18, the second limiting groove 19 and the clamping groove 20 on the corresponding fixed block 17 at the top.

[0043] After the fixed block 17 at the top supports the moving frame 3 through the first limiting groove 18, the first limiting block 14, the second limiting groove 19, the second limiting block 15, the clamping groove 20, and the clamping block 16 and the first moving plate 10, the second hydraulic cylinder 9 near the first moving plate 10 on the bottom side is opened, so that the corresponding second moving plate 11, the first limiting block 14, the second limiting block 15, and the clamping block 16 are separated from the fixed block 17. Further, the first hydraulic cylinder 8 near the first moving plate 10 on the bottom side is opened, so that the first moving plate 10 moves to correspond to the fixed block 17 at the top. Through the second hydraulic cylinder 9 and the second moving plate 11, the first limiting block 14, the second limiting block 15, and the clamping block 16 are moved into the first limiting groove 18, the second limiting groove 19, and the clamping groove 20 on the corresponding fixed block 17 to complete the lifting of the moving frame 3. When the moving frame 3 is lifted and moves upward, it can drive the tower crane main body 1 to move upward to lift the tower crane main body 1. The first moving plate 10 and the second moving plate 11 on both sides are moved in sequence to facilitate continuous limiting between the moving frame 3 and the support frame 2, which helps to adjust the height of the tower crane main body 1.

[0044] During the use process, when jacking up the tower crane main body 1, it helps to ensure continuous locking and limiting between the moving frame 3 and the support frame 2, and the operation of jacking up the tower crane main body 1 is relatively convenient, which helps to safely jack up the tower crane main body 1 for the use of the tower crane main body 1.

[0045] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, with equivalent substitution or change, should be covered within the protection scope of the present invention.

Claims

1. A jacking mechanism for a tower crane with high safety, comprising a plurality of support frames (2) spliced and installed at intervals in the vertical direction, characterized in that: Fixed blocks (17) are installed in the middle of both sides of the support frame (2). A moving frame (3) is slidably installed along the vertical direction on the outside of the support frame (2) at the top. A tower crane main body (1) is installed at the upper end of the moving frame (3). A retaining hole (6) is formed at one end of the moving frame (3). A second frame-shaped plate (5) is fixed on the lower surface of the moving frame (3) on the outside of the corresponding support frame (2). In the middle of both sides of the upper surface of the second frame-shaped plate (5), first hydraulic cylinders (8) are installed. The output rods of the first hydraulic cylinders (8) penetrate through the upper surface and the lower surface at the corresponding positions on the second frame-shaped plate (5). At the lower ends of the output rods of the first hydraulic cylinders (8), first moving plates (10) are fixed. In the middle of the surfaces of the first moving plates (10) away from each other, second hydraulic cylinders (9) are installed. The output rods of the second hydraulic cylinders (9) penetrate through both sides of the middle of the first moving plates (10). At the ends of the output rods of the second hydraulic cylinders (9) close to each other, second moving plates (11) are fixed. In the middle of the opposite surfaces of the second moving plates (11), second limiting blocks (15) are fixed. In the middle of the fixed blocks (17), second limiting grooves (19) matching the second limiting blocks (15) are correspondingly formed.

2. The jacking mechanism with high safety of the tower crane according to claim 1, wherein: On the upper middle and lower middle of the opposite surfaces of the second moving plate (11), first limiting blocks (14) are fixed. On the upper middle and lower middle of the fixed block (17), first limiting grooves (18) matching the first limiting blocks (14) are correspondingly formed. In the middle of both ends of the opposite surfaces of the second moving plate (11), clamping blocks (16) are fixed. On the fixed blocks (17), clamping grooves (20) matching the clamping blocks (16) are correspondingly formed.

3. The jacking mechanism with high safety for tower cranes according to claim 2, characterized in that: Between the upper end of the moving frame (3) and the lower surface of the tower crane main body (1), they are rotatably installed through a gear set. The retaining hole (6) penetrates through the inner and outer sides of the corresponding position on the moving frame (3). The retaining hole (6) on the moving frame (3) is larger than the support frame (2).

4. The jacking mechanism with high safety of a tower crane according to claim 3, characterized in that: In the middle of the surface of the second frame-shaped plate (5) close to one end of the retaining hole (6), a feeding plate (7) is fixed. Between the two sides of the upper surface of the feeding plate (7) and the edge parts of the corresponding sides of the upper surface of the second frame-shaped plate (5), guardrails are commonly fixed.

5. The jacking mechanism with high safety of a tower crane according to claim 4, characterized in that: At the upper end of the outside of the moving frame (3), a first frame-shaped plate (4) is fixed. The first hydraulic cylinders (8) are all in a vertical state, and the upper ends of the first hydraulic cylinders (8) are installed between the middle parts of the corresponding sides of the lower surface of the first frame-shaped plate (4).

6. The jacking mechanism with high safety for a tower crane according to claim 5, characterized in that: The first moving plates (10) are all in a horizontal state. At both ends of the upper surface of the first moving plates (10), first limiting rods (12) are fixed. The first limiting rods (12) are all in a vertical state, and the first limiting rods (12) penetrate through the upper surface and the lower surface at the corresponding positions on the second frame-shaped plate (5).

7. The jacking mechanism with high safety of a tower crane according to claim 6, characterized in that: The second moving plates (11) are all in a horizontal state. At the middle parts of both ends of the surfaces of the second moving plates (11) away from each other, second limiting rods (13) are fixed. The second limiting rods (13) penetrate through both sides of the corresponding positions on the corresponding first moving plates (10).

8. The jacking mechanism with high safety of a tower crane according to claim 7, characterized in that: The four corners between the adjacent and closer ends of the support frames (2) are fixedly installed by bolts, and a base (21) is installed at the lower end of the support frame (2) located at the bottom by bolts.

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