Tower crane standard knot easy to disassemble and assemble

Abstract

The utility model relates to a tower crane standard knot easy to disassemble and assemble, which comprises a first standard knot and a second standard knot, the top of the first standard knot is provided with an I-shaped fixing block, the bottom of the second standard knot is provided with a fixing groove, and the I-shaped fixing block and the fixing groove are matched and clamped. A first connecting base, a U-shaped supporting arm, a protective net, a connecting rod, a movable block, a hydraulic cylinder and a second connecting base are installed on the side wall of the first standard section, the first standard section is provided with an I-shaped fixing block, a corresponding inserting hole is formed between the I-shaped fixing block and the fixing groove, and a plug pin is inserted into the inserting hole. By starting the hydraulic cylinder, the U-shaped supporting arms can be driven to rotate by 90 degrees along the first connecting base to the horizontal position, so that the protective net connected between the U-shaped supporting arms moves to the horizontal position, workers above the protective net can be protected and prevented from directly falling to the ground, and safety is improved.

Description

Technical Field

[0001] This application relates to the technical field of tower crane standard sections, and in particular to an easily disassembled tower crane standard section. Background Technology

[0002] Tower crane standard sections play a vital role in mechanical equipment such as cranes, tower cars, and elevators. A good standard section can not only improve the stability of these heavy machines, but also enhance the overall safety performance.

[0003] A search revealed that patent application number CN202121811488.8 discloses an easily detachable tower crane standard section, comprising a standard section support frame, a fixing block, a fixing sleeve, a limiting component, and a movable sleeve. The standard section support frame has standard section crossbeams fixed at its upper and lower ends. The fixing block is fixed to the upper outer side of the standard section support frame, and a connecting rod is fixed to the top of the fixing block. The fixing sleeve is fixed to the lower outer side. The limiting component, for easy disassembly and assembly, is located on the outer side of the fixing sleeve. This easily detachable tower crane standard section features a limiting block and a fixing sleeve. The conical limiting block can abut against a limiting rod inside the fixing sleeve during installation, allowing the limiting rod to move outward. When the height of the limiting block is higher than the limiting rod, the limiting rod will be engaged below the limiting block under the spring force, thus limiting and fixing the limiting block. The structure is simple, solves the problem of difficult disassembly due to rusted bolts, and improves disassembly and assembly efficiency.

[0004] However, the device lacks protective features during use, and workers are at risk of falling while working on it. Furthermore, when disassembling the standard section support frame, all the pull rings must be pulled simultaneously to retract the limit rods in order to disassemble the standard section support frame. This process requires the cooperation of multiple people, making the disassembly process inconvenient and labor-intensive. Utility Model Content

[0005] To address the problems mentioned in the background art, this application provides an easily disassembled and assembled tower crane standard section.

[0006] The standard tower crane section that is easy to disassemble and assemble provided in this application adopts the following technical solution:

[0007] A tower crane standard section that is easy to disassemble and assemble includes a first standard section and a second standard section. The first standard section has protective structures on both sides and an I-shaped fixing block on the top. The second standard section has a fixing groove on the bottom. The I-shaped fixing block and the fixing groove are fitted together. A corresponding insertion hole is provided between the I-shaped fixing block and the fixing groove. A pin is inserted into the insertion hole. The bottom of the second standard section is also provided with a clamping structure to fix the pin.

[0008] Preferably, the protective mechanism includes two sets of symmetrical first connecting seats installed on both sides of the first standard section, and U-shaped support arms are rotatably installed in the two sets of first connecting seats, with a protective net provided between the U-shaped support arms.

[0009] Preferably, the top of the U-shaped support arm is provided with a through groove, and a connecting rod is fixedly installed on the inner wall of the U-shaped support arm at the through groove. A movable block is movably installed on the connecting rod, and one end of the movable block is connected to a hydraulic cylinder.

[0010] Preferably, the other end of the hydraulic cylinder is provided with a protrusion, and the protrusion is movably installed between the protrusion and the second connecting seat provided on the side wall of the first standard section.

[0011] Preferably, the clamping structure includes L-shaped fixing blocks installed at the bottom positions of the left and right sidewalls of the second standard section. A positioning block is also provided at the edge of the L-shaped fixing block. Corresponding through holes are opened on the sidewalls of the L-shaped fixing block and the positioning block. A sleeve is also fixedly installed on one side of the L-shaped fixing block.

[0012] Preferably, a pull rod extends from one end of the sleeve, one end of the pull rod is inserted into the sleeve, and the other end is connected to a pressing block. A spring is connected to one side of the pressing block, and the other end of the spring is connected to the inner wall of one end of the sleeve.

[0013] Preferably, a clamping rod is provided on the other side of the compression block. One end of the clamping rod passes through the corresponding through holes opened on the side walls of the L-shaped fixing block and the positioning block, and enters the fixing hole opened on one end of the pin.

[0014] Preferably, a blocking block is rotatably installed on the side wall of the positioning block, and a support rod is also provided on the side wall of the positioning block at the bottom of the through hole.

[0015] In summary, this application includes the following beneficial technical effects:

[0016] 1. This utility model is equipped with a protective structure. By installing a first connecting seat, a U-shaped support arm, a protective net, a connecting rod, a movable block, a hydraulic cylinder, and a second connecting seat on the side wall of the standard section, the hydraulic cylinder can drive the U-shaped support arm to rotate 90 degrees along the first connecting seat to a horizontal position during use. This allows the protective net connected between the U-shaped support arms to move to a horizontal position, thereby protecting the workers above and preventing them from falling directly to the ground, thus improving safety.

[0017] 2. This utility model is equipped with a clamping mechanism. When disassembling the standard section, the clamping rod is pulled to disengage from the fixing hole at one end of the pin. Then, the blocking block is rotated to the support rod on the side wall of the positioning block to seal the through hole on the side wall of the positioning block. This prevents the clamping rod from springing back, allowing the workers to pull out all the pins in sequence, improving the ease of disassembling the standard section and reducing labor costs. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a standard tower crane section that is easy to disassemble and assemble, as described in an embodiment of this application.

[0019] Figure 2 This is a schematic diagram of the sidewall protection structure of the first standard section in this embodiment of the application;

[0020] Figure 3 This is an embodiment of the present application. Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 4 This is a schematic diagram of the clamping structure at one end of the second standard section in the embodiments of this application;

[0022] Figure 5 This is an embodiment of the present application. Figure 4 Enlarged view of the structure at point B in the middle.

[0023] Explanation of reference numerals in the attached drawings: 1. First standard section; 2. Second standard section; 3. I-shaped fixing block; 4. Insertion hole; 5. Pin; 6. First connecting seat; 7. U-shaped support arm; 8. Protective net; 9. Connecting rod; 10. Movable block; 11. Hydraulic cylinder; 12. Second connecting seat; 13. L-shaped fixing block; 14. Sleeve; 15. Pull rod; 16. Spring; 17. Clamping rod; 18. Positioning block; 19. Block. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 —5 provides further detailed description of this application.

[0025] This application discloses an easily detachable tower crane standard section, including a first standard section 1 and a second standard section 2. The first standard section 1 has protective structures on both sides, an I-shaped fixing block 3 on the top, and a fixing groove on the bottom. The I-shaped fixing block 3 and the fixing groove are fitted together. A corresponding insertion hole 4 is provided between the I-shaped fixing block 3 and the fixing groove. A pin 5 is inserted into the insertion hole 4. The bottom of the second standard section 2 is also provided with a clamping structure to fix the pin 5.

[0026] refer to Figure 2 and Figure 3The protective mechanism includes two sets of symmetrical first connecting seats 6 installed on both sides of the first standard section 1. U-shaped support arms 7 are rotatably installed within each of the two sets of first connecting seats 6. A protective net 8 is provided between the U-shaped support arms 7. A through groove is opened at the top of the U-shaped support arm 7. A connecting rod 9 is fixedly installed on the inner wall of the U-shaped support arm 7 at the through groove. A movable block 10 is movably installed on the connecting rod 9. One end of the movable block 10 is connected to a hydraulic cylinder 11. The other end of the hydraulic cylinder 11 is provided with a protrusion. The protrusion is movably installed between the second connecting seat 12 on the side wall of the first standard section 1. More specifically, the rotatable installation between the movable block 10 connected to one end of the hydraulic cylinder 11 and the connecting rod 9 installed on the inner wall of the U-shaped support arm 7 allows the U-shaped support arm 7 to rotate 90 degrees along the first connecting seat 6 to a horizontal position when the hydraulic cylinder 11 is activated. This allows the protective net 8 connected between them to move to a horizontal position, enabling the protective net 8 to protect the workers above, preventing them from falling directly to the ground and improving safety performance.

[0027] refer to Figure 4 and Figure 5 The clamping structure includes L-shaped fixing blocks 13 installed at the bottom of the left and right side walls of the second standard section 2. Positioning blocks 18 are also provided at the edges of the L-shaped fixing blocks 13. Corresponding through holes are opened on the side walls of the L-shaped fixing blocks 13 and the positioning blocks 18. A sleeve 14 is also fixedly installed on one side of the L-shaped fixing blocks 13. A pull rod 15 extends from one end of the sleeve 14 and is inserted into the sleeve 14. One end of the pull rod 15 is also connected to a pressing block. A spring 16 is connected to one side of the pressing block, and the other end of the spring 16 is connected to the inner wall of one end of the sleeve 14. A clamping rod 17 is provided on the other side of the pressing block. One end of the clamping rod 17 passes through the corresponding through holes opened on the side walls of the L-shaped fixing blocks 13 and the positioning blocks 18, and is inserted into one end of the pin 5. Inside the fixing hole, a blocking block 19 is rotatably installed on the side wall of the positioning block 18. A support rod is also provided at the bottom of the through hole on the side wall of the positioning block 18. More specifically, when the first standard section 1 and the second standard section 2 are disassembled, the pulling rod 15 is pulled to drive the compression plate to compress the spring 16, causing the clamping rod 17 to disengage from the fixing hole at one end of the pin 5 and retract into the sleeve 14. Then, the blocking block 19 is rotated to the top of the support rod on the side wall of the positioning block 18 to block the through hole on the side wall of the positioning block 18. This prevents the clamping rod 17 from springing back when the pulling rod 15 is released, allowing the workers to pull out all the pins 5 in sequence, improving the convenience of disassembly and reducing labor costs.

[0028] The implementation principle of an easily disassembled tower crane standard section according to an embodiment of this application is as follows: During use, pulling the pull rod 15 causes the compression plate to compress the spring 16, which then retracts into the sleeve 14. Then, rotating the blocking block 19 above the support rod on the side wall of the positioning block 18 seals the through hole on the side wall of the positioning block 18, preventing the clamping rod 17 from springing back. Next, by placing the second standard section 2 above the first standard section 1, the I-shaped fixing block 3 at the top of the first standard section 1 matches and engages with the fixing groove at the bottom of the second standard section 2. Then, the pin 5 is inserted into the corresponding insertion hole 4 between the I-shaped fixing block 3 and the fixing groove. Simultaneously, rotating the blocking block 19 to one side of the positioning block 18 releases the pull rod 15. Under the action of the spring 16, the clamping rod 17 is inserted into the fixing hole at one end of the pin 5, causing the first standard section 1 to retract. The first standard section 1 and the second standard section 2 are fixedly installed. When the first standard section 1 and the second standard section 2 are disassembled, the same method is used: pulling the pull rod 15 causes the clamping rod 17 to retract, and then rotating the plug block 19 seals the through hole opened on the side wall of the positioning block 18, so that the workers can pull out all the pins 5 in sequence and disassemble the first standard section 1 and the second standard section 2, which improves the convenience of disassembly and reduces labor costs. When protecting the workers, the hydraulic cylinder 11 is activated to drive the U-shaped support arm 7 to drill 90 degrees along the first connecting seat 6 to the horizontal position, which can drive the protective net 8 connected between them to move to the horizontal position, so that the protective net 8 can protect the workers above and avoid the danger of falling directly to the ground, thus improving safety performance.

[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A detachable tower crane standard section comprising a first standard section (1) and a second standard section (2), characterized in that: The first standard section (1) is provided with a protective structure on both sides, the top of the first standard section (1) is provided with an I-shaped fixing block (3), the bottom of the second standard section (2) is provided with a fixing groove, the I-shaped fixing block (3) is matched and engaged with the fixing groove, a corresponding insertion hole (4) is arranged between the I-shaped fixing block (3) and the fixing groove, a bolt (5) is inserted into the insertion hole (4), and the bottom of the second standard section (2) is further provided with a clamping structure for fixing the bolt (5).

2. The detachable tower crane standard segment of claim 1, wherein: The protective structure comprises two groups of symmetrical first connecting seats (6) mounted on the side walls of the first standard section (1), and U-shaped support arms (7) are rotatably mounted in the two groups of first connecting seats (6) respectively, and a protective net (8) is arranged between the U-shaped support arms (7).

3. A detachable tower crane standard segment according to claim 2, characterized in that: A through groove is formed in the top of the U-shaped support arm (7), a connecting rod (9) is fixedly installed on the inner wall of the U-shaped support arm (7) at the through groove, a movable block (10) is movably installed on the connecting rod (9), and a hydraulic cylinder (11) is connected to one end of the movable block (10).

4. The detachable tower crane standard segment of claim 3, wherein: The other end of the hydraulic cylinder (11) is provided with a protruding block, and the protruding block is movably installed between the second connecting seat (12) arranged on the side wall of the first standard section (1).

5. The detachable tower crane standard segment of claim 1, wherein: The clamping structure comprises an L-shaped fixing block (13) mounted on the side walls of the left and right ends of the second standard section (2) at the bottom position, a positioning block (18) is further arranged at the edge of the L-shaped fixing block (13), corresponding through holes are formed in the side walls of the L-shaped fixing block (13) and the positioning block (18), and a sleeve (14) is further fixedly installed on one side of the L-shaped fixing block (13).

6. A detachable tower crane standard segment according to claim 5, characterized in that: One end of the sleeve (14) penetrates out of a pull rod (15), one end of the pull rod (15) penetrates into the sleeve (14), one end of the pull rod (15) is further connected with an extrusion block, one side of the extrusion block is connected with a spring (16), and the other end of the spring (16) is connected with the inner wall of one end of the sleeve (14).

7. A detachable tower crane standard segment according to claim 6, characterized in that: The other side of the extrusion block is provided with a clamping rod (17), one end of the clamping rod (17) penetrates through the corresponding through holes formed in the side walls of the L-shaped fixing block (13) and the positioning block (18), and penetrates into a fixing hole formed in one end of the bolt (5).

8. The detachable tower crane standard segment of claim 5, wherein: A plug block (19) is rotatably installed on the side wall of the positioning block (18), and a supporting rod is further arranged at the bottom position of the through hole formed in the side wall of the positioning block (18).

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