Anti-falling locking device for jacking cross beam of tower crane

Abstract

The utility model provides an anti-falling locking device for a jacking cross beam of a tower crane, which is characterized in that a step (4) is fixedly arranged on the side surface of a standard knot main limb (3) of the tower crane, an obliquely upward arc groove is formed in the side surface of the step (4), and the shaft end of the jacking cross beam (1) of the tower crane is matched with the arc groove; the device is provided with a locking device used for locking the shaft end and the arc groove. The device is further provided with an anti-disengaging device used for preventing the shaft end from being disengaged from the arc groove. The lifting device is reasonable in structural design, simple to operate and capable of improving the stability and the safety of the jacking operation of the tower crane.

Description

Technical Field

[0001] The utility model relates to an anti-dropout locking device, in particular to an anti-dropout locking device for a jacking beam of a tower crane. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] With the rapid development of the construction industry, tower cranes have been widely used in various construction sites. The disassembly and installation of tower cranes are inseparable from jacking operations. The jacking operation is mainly achieved by using hydraulic cylinders to push the jacking beam to act on the standard section steps. If this process is not properly operated, it is easy for the jacking beam to slip out of the step groove, causing the tower crane to overturn, resulting in casualties and property losses. Therefore, it is particularly important to design an anti-slip locking device that can prevent the jacking beam from slipping out.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] Purpose of the invention: The technical problem to be solved by the utility model is to provide a tower crane lifting beam anti-detachment locking device in view of the deficiencies in the prior art.

[0006] In order to solve the above technical problems, the utility model discloses a tower crane lifting beam anti-drop locking device, comprising:

[0007] A step is fixedly provided on the side of the main limb of the standard section of the tower crane, and an arc groove obliquely upward is provided on the side of the step, and the shaft end of the lifting beam of the tower crane matches the arc groove;

[0008] The device is provided with a locking device for locking the shaft end with the circular arc groove;

[0009] The device is also provided with an anti-slip device for preventing the shaft end from detaching from the circular arc groove.

[0010] Furthermore, the locking device comprises:

[0011] A clamping block is installed on the step of the main limb of the standard section through a first pin shaft and a first cotter pin, and the clamping block is closed at the opening of the circular arc groove.

[0012] Furthermore, the clamping block is a 7-shaped structure, with a hole at one end of the top, a hole at the upper end of the step, and the first pin passes through the above-mentioned hole to install the clamping block on the step.

[0013] Furthermore, a protrusion is provided on the bottom side of the block, and a protrusion is also provided at the lower opening of the arc groove of the step. The above-mentioned protrusions are all opened with holes and are fixed by a second pin shaft and a second cotter pin.

[0014] Furthermore, the anti-falling device comprises:

[0015] A safety pin movably arranged below the axial end of the lifting beam, the safety pin sliding in the horizontal direction along the axis of the axial end of the lifting beam;

[0016] A through hole is provided on the step, and one end of the safety pin passes through the through hole to prevent the shaft end from being separated from the circular arc groove.

[0017] Furthermore, the anti-falling device further comprises:

[0018] A locking device fixedly arranged on the step is used to lock the safety pin.

[0019] Furthermore, the locking device comprises:

[0020] A locking device shell is fixedly mounted on the outside of the through hole of the step, and the shell is a hollow square structure. A spring is fixedly mounted on the top end thereof, and a locking block is provided at the other end of the spring. A locking device outer shell is fixedly mounted on the outside of the locking device shell, and a slide groove is vertically provided on the locking device outer shell. The locking block is horizontally provided with a first protrusion and moves up and down along the slide groove.

[0021] Furthermore, a second protrusion is provided at the bottom of the locking block, and a groove of a corresponding shape is provided at a corresponding position at one end of the safety pin.

[0022] Furthermore, a safety pin handle is fixedly provided on the safety pin.

[0023] Furthermore, the safety pin handle and the groove are arranged on the same plane.

[0024] Beneficial effects:

[0025] 1. The utility model solves the problem of the tower crane's lifting beam and safety pin falling off through an anti-falling locking device.

[0026] 2. The utility model has an innovative structural design and a simple and reliable structure, which significantly improves the safety and reliability of preventing the tower crane's jacking beam from falling off. The device has a simple structure and is easy to operate, and can provide a solid guarantee for efficient and safe tower crane jacking operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods, and the above and / or other advantages of the present invention will become more clear.

[0028] Figure 1 The present invention is a front view of an anti-disengagement locking device for a tower crane's jacking beam.

[0029] Figure 2 The present invention is a side view of an anti-disengagement locking device for a tower crane's jacking beam.

[0030] Figure 3 It is an isometric exploded view of an anti-disengagement locking device for the lifting beam of a tower crane.

[0031] Figure 4 The present invention is a side view of the left and right diagonal axes of an anti-drop locking device for a jacking beam of a tower crane.

[0032] Figure 5 It is a schematic diagram of a safety pin.

[0033] In the figure: 1 is the lifting beam; 2 is the safety pin; 3 is the standard section main limb; 4 is the standard section main limb step; 5 is the stopper; 6 is the safety pin handle; 7 is the clamping block; 8 is the first pin shaft 1; 9 is the first cotter pin; 10 is the locking device housing; 11 is the locking device outer shell; 12 is the spring; 13 is the locking block; 14 is the second pin shaft 2; 15 is the second cotter pin; 16 is the square groove. DETAILED DESCRIPTION

[0034] The utility model discloses a tower crane lifting beam anti-dropping locking device, and the specific technical scheme is as follows: the device comprises: a lifting beam 1, a safety pin 2, a standard section main limb 3, a standard section main limb step 4, a stopper 5, a safety pin handle 6, a clamping block 7, a first pin shaft 8, a first cotter pin 9, a locking device shell 10, a locking device housing 11, a spring 12, a locking block 13, a second pin shaft 14, and a second cotter pin 15.

[0035] like Figure 3 As shown, the block 7 is installed on the standard section main limb step 4 through the pin shaft 8 and the first cotter pin 9, and the locking device housing 10 is welded on the step.

[0036] The locking device comprises a safety pin 2 , a locking device housing 10 , a locking device shell 11 , a spring 12 and a locking block 13 .

[0037] One end of the spring 12 is welded inside the locking device housing 10 , and the other end is welded to the locking block 13 .

[0038] The locking device housing 10 can be designed as an integral unit with the standard section main limb step 4, or can be additionally designed and welded to the step.

[0039] The locking device housing 11 is provided with a square slide groove, and a protrusion is provided at a corresponding position on the locking block 13 . The protrusion slides along the square slide groove, so that the locking block 13 can be moved up and down by compressing the spring 12 .

[0040] The protruding end of the safety pin 2 is provided with a square groove 16;

[0041] like Figure 5 As shown, the safety pin 2 is provided with a safety pin handle 6;

[0042] The plane on which the square groove 16 is arranged is parallel to the plane on which the safety pin handle 6 is fixed to the safety pin 2 .

[0043] Example:

[0044] like Figure 1 As shown, a tower crane lifting beam anti-disengagement locking device includes: a lifting beam 1, a safety pin 2, a standard section main limb 3, a standard section step 4, a stopper 5, a safety pin handle 6, a clamping block 7, a pin shaft 8, a cotter pin 9, a locking device shell 10, a locking device casing 11, a spring 12, and a locking block 13.

[0045] like Figure 2 As shown, a tower crane anti-slip locking device is mainly composed of a clamping block 7 and a locking device. The clamping block 7 and the step 4 are both provided with mounting holes, and the clamping block 7 is mounted and fixed on the step 4 through a pin shaft 8, a split pin 9 and a pin shaft 14, a split pin 15. The installation process is simple and reliable.

[0046] The locking device comprises a safety pin 2, a locking device housing 10, a locking device shell 11, a spring 12 and a locking block 13. One end of the spring 12 is welded inside the locking device housing 10, and the other end is welded to the locking block 13. The spring 12 and the locking block 13 are installed in the locking device housing 10 and are encapsulated by being welded to the housing with the locking device shell 11.

[0047] The specific usage process is as follows: Figure 4 As shown: when the axial end of the lifting beam 1 completely falls onto the standard section step 4, first pull the locking block 13 upwards, insert the safety pin 2 completely into the safety pin hole under the step and make the safety pin handle 6 vertically downwards, then release the locking block 13, and use the spring force to press the locking block on the square groove of the safety pin, thereby locking the position of the safety pin 2 to prevent the safety pin 2 from being unsafely inserted or falling off due to vibration or other reasons; then, fix the clamping block 7 on the step 4 with the pin shaft 8 and the cotter pin 9, thereby preventing the lifting beam 1 from falling out of the arc groove of the step 4, and the function of anti-falling locking of the lifting beam is achieved through the action of both the clamping block 7 and the locking device.

[0048] Through the above improvements, this embodiment provides a self-locking device to prevent the lifting beam of the tower crane from falling off, so that the lifting beam of the tower crane can be prevented from falling off from the step groove during the lifting operation, reducing the risk of overturning the tower crane and providing a solid guarantee for efficient and safe tower crane lifting operations.

[0049] The utility model provides a concept and method for a tower crane jacking beam anti-disengagement locking device. There are many methods and ways to implement the technical solution. The above is only a preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications should also be regarded as the protection scope of the utility model. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A tower crane lifting beam anti-drop locking device, characterized in that: include: A step (4) is fixedly provided on the side of the standard section main limb (3) of the tower crane, and an arc groove obliquely upward is provided on the side of the step (4), and the shaft end of the lifting beam (1) of the tower crane matches the arc groove; The device is provided with a locking device for locking the shaft end with the circular arc groove; The device is also provided with an anti-slip device for preventing the shaft end from detaching from the circular arc groove.

2. The anti-drop locking device for the lifting beam of a tower crane according to claim 1 is characterized in that: The locking device comprises: A block (7) is installed on the step (4) of the main limb (3) of the standard section through a first pin shaft (8) and a first cotter pin (9), and the block (7) is closed at the opening of the circular arc groove.

3. The anti-drop locking device for the lifting beam of a tower crane according to claim 2 is characterized in that: The clamping block (7) is a 7-shaped structure, with a hole at one end of its top, and a hole at the upper end of the step (4). The first pin shaft (8) passes through the above-mentioned hole to install the clamping block (7) on the step (4).

4. The anti-drop locking device for the lifting beam of a tower crane according to claim 3 is characterized in that: The bottom side of the block (7) is provided with a protrusion, and the lower opening of the arc groove of the step (4) is also provided with a protrusion. The protrusions are all opened and fixed by a second pin shaft (14) and a second cotter pin (15).

5. The anti-drop locking device for the lifting beam of a tower crane according to claim 1, characterized in that: The anti-slip device comprises: A safety pin (2) movably arranged below the shaft end of the lifting beam (1), wherein the safety pin (2) slides in the horizontal direction along the axis of the shaft end of the lifting beam (1); The step (4) is provided with a through hole, and one end of the safety pin (2) passes through the through hole, so as to prevent the shaft end from being separated from the circular arc groove.

6. The anti-drop locking device for the lifting beam of a tower crane according to claim 5, characterized in that: The anti-slip device further comprises: A locking device fixedly arranged on the step (4) is used to lock the safety pin (2).

7. The anti-drop locking device for the lifting beam of a tower crane according to claim 6, characterized in that: The locking device comprises: A locking device housing (10) is fixedly arranged on the outside of the through hole of the step (4), the housing is a hollow square structure, a spring (12) is fixedly arranged at the top end thereof, a locking block (13) is arranged at the other end of the spring (12), a locking device outer shell (11) is fixedly arranged on the outside of the locking device housing (10), a sliding groove is vertically provided on the locking device outer shell (11), and the locking block (13) is horizontally provided with a first protrusion and moves up and down along the sliding groove.

8. The anti-drop locking device for the lifting beam of a tower crane according to claim 7, characterized in that: A second protrusion is provided at the bottom of the locking block (13), and a groove (16) of a corresponding shape is provided at a corresponding position at one end of the safety pin (2).

9. The anti-drop locking device for the lifting beam of a tower crane according to claim 8, characterized in that: A safety pin handle (6) is fixedly provided on the safety pin (2).

10. The anti-drop locking device for the lifting beam of a tower crane according to claim 9, characterized in that: The safety pin handle (6) and the groove (16) are arranged on the same plane.

Images