Quick dismounting mechanism for pin shaft of construction machinery

Abstract

The application discloses a kind of building engineering machinery with pin shaft quick dismounting mechanism, belong to pin shaft dismounting technical field, including support base, the upper surface of the support base is provided with rotating sleeve, the inside of the rotating sleeve is installed with lifting rod, the top of the lifting rod is connected with fixed collar, the rotating sleeve is connected with movable pin between lifting rod, the fixed collar is provided with fixed sleeve, the inside of the fixed sleeve is installed with extension rod, the extension rod is opened with positioning hole, the bolt is connected between the extension rod and fixed collar.The application utilizes lever principle, by the cooperation of extension rod and fixed sleeve, the length of force arm can be flexibly adjusted, the force of staff is amplified, the pin shaft that is difficult to take out due to corrosion, wear or deformation can be easily disassembled, without the help of hammering, prying and other laborious operation, the labor intensity of staff is greatly reduced;Meanwhile, operation steps are simple, without complex professional skills.

Description

Technical Field

[0001] This invention belongs to the field of pin assembly and disassembly technology, specifically referring to a quick assembly and disassembly mechanism for pins used in construction machinery. Background Technology

[0002] In the field of construction machinery, pins, as core connecting components, are widely used in the connection of structural components bearing heavy loads, such as the booms, hydraulic cylinders, and standard sections of excavators, tower cranes, and scrapers. The ease and efficiency of their installation and disassembly directly affect the construction efficiency, maintenance costs, and operational safety of construction machinery.

[0003] Currently, the disassembly and assembly of pins used in construction machinery mostly rely on traditional manual operations or simple tools, presenting numerous technical challenges that urgently need to be addressed. On one hand, traditional methods require workers to use hammers, crowbars, and other simple tools for hammering and prying, which is not only labor-intensive but also prone to damaging the pins and equipment connections during the process. This leads to accelerated wear and deformation of the pins, shortening their lifespan and increasing equipment maintenance and replacement costs. On the other hand, due to the differences in height and specifications of pins of different models and installation locations, existing disassembly tools are mostly fixed structures, unable to flexibly adjust height and length according to actual working conditions, resulting in extremely poor adaptability. For special scenarios such as high-altitude operations or outdoor rescues, traditional tools are even more difficult to adapt, hindering disassembly and assembly operations and severely impacting construction progress and rescue efficiency.

[0004] In addition, some existing pin assembly and disassembly devices have problems such as complex structure, cumbersome operation and inconvenience of carrying. For pins with increased friction due to rust, wear or equipment deformation, existing devices often cannot provide sufficient disassembly force and require destructive disassembly methods, resulting in waste of parts and further increasing construction costs. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a quick assembly and disassembly mechanism for pins used in construction machinery, which effectively solves the problems currently on the market.

[0006] The technical solution adopted by this invention is as follows: This invention proposes a quick assembly and disassembly mechanism for pins used in construction machinery, including a support base, a rotating sleeve provided on the upper surface of the support base, a lifting rod installed inside the rotating sleeve, a fixed collar connected to the top end of the lifting rod, a movable pin connected between the rotating sleeve and the lifting rod, a fixed sleeve provided inside the fixed collar, an extension rod installed inside the fixed sleeve, a positioning hole provided on the extension rod, and a bolt connected between the extension rod and the fixed collar.

[0007] Furthermore, a connecting rod is provided at one end of the fixed sleeve, and a connecting rod is connected between the connecting rod and the fixed sleeve. A docking block is connected at the other end of the connecting rod. A sliding groove is provided on the docking block. An adjusting screw is provided on the docking block. A clamping block is provided at one end of the adjusting screw. An anti-slip pad is installed on the clamping block. A guide rod is provided on the clamping block.

[0008] Furthermore, the rotating sleeve is rotatably connected to the middle position of the support base, the lifting rod is slidably connected inside the rotating sleeve, and the fixed collar is fixedly connected to the end of the lifting rod away from the rotating sleeve.

[0009] Furthermore, the movable pin passes through and slides through the rotating sleeve, the movable pin passes through and slides through the lifting rod, and the fixed sleeve is fixedly connected to the fixed collar.

[0010] Furthermore, the extension rod is slidably connected to the fixing sleeve, the positioning holes are evenly opened on the extension rod, the bolt passes through and is threadedly connected to the extension rod, and the bolt is located in the positioning hole.

[0011] Furthermore, the connecting rod passes through and rotatably connects to one end of the connecting rod, and the connecting rod rotatably connects to the fixed sleeve.

[0012] Furthermore, the docking block is rotatably connected to the end of the connecting rod away from the fixed sleeve, and the sliding groove is symmetrically formed on the docking block.

[0013] Furthermore, the end of the connecting rod near the docking block is slidably connected to the sliding groove.

[0014] Furthermore, the adjusting screws are evenly distributed on the mating block, the adjusting screws pass through and are threadedly connected to the mating block, and the clamping block is rotatably connected to the adjusting screws.

[0015] Furthermore, the anti-slip pad is fixedly connected to the clamping block, the clamping block is arc-shaped, the guide rod is symmetrically arranged on the clamping block, and the guide rod is fixedly connected to the clamping block, the guide rod passes through and is slidably connected to the docking block.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows:

[0017] (1) By utilizing the lever principle, the lever arm length can be flexibly adjusted through the cooperation of the extension rod and the fixed sleeve, which amplifies the force of the workers and makes it easy to disassemble the pins that are difficult to remove due to rust, wear or deformation. There is no need to use hammers, prying or other laborious operations, which greatly reduces the labor intensity of the workers. At the same time, the entire disassembly and assembly process can be completed by only 1-2 workers. The operation steps are simple and do not require complicated professional skills. This significantly shortens the time required for pin disassembly and assembly, effectively improves the construction efficiency and maintenance efficiency of construction machinery, and avoids the loss caused by equipment downtime due to excessive time spent on pin disassembly and assembly.

[0018] (2) By sliding the lifting rod and rotating sleeve together, combined with the positioning function of the movable pin, the height of the docking block can be flexibly adjusted to adapt to pins at different heights; by sliding the extension rod and fixed sleeve together, and the positioning function of bolts and positioning holes, the lever arm length can be flexibly adjusted to meet the disassembly and assembly of pins of different specifications and different disassembly force requirements; at the same time, the docking block moves the clamping block by adjusting the screw, which can adapt to pins of different diameters, and the clamping block adopts an arc structure and is equipped with anti-slip pads, which can closely fit the outer surface of the pin and adapt to pins of different shapes, effectively solving the problem of poor compatibility of existing tools, and can be widely used in the disassembly and assembly of pins of various construction machinery, covering a variety of equipment such as excavators, tower cranes, and scrapers, with significantly better compatibility than existing technologies. Attached Figure Description

[0019] Figure 1 This invention proposes a three-dimensional structure for a quick-assembly and disassembly mechanism for pins used in construction machinery. Figure 1 ;

[0020] Figure 2 This invention proposes a three-dimensional structure for a quick-assembly and disassembly mechanism for pins used in construction machinery. Figure 2 ;

[0021] Figure 3 This invention proposes a three-dimensional structure for a quick-assembly and disassembly mechanism for pins used in construction machinery. Figure 3 ;

[0022] Figure 4 This invention proposes a three-dimensional structure for a quick-assembly and disassembly mechanism for pins used in construction machinery. Figure 4 ;

[0023] Figure 5 This invention proposes a three-dimensional structure for a quick-assembly and disassembly mechanism for pins used in construction machinery. Figure 5 .

[0024] The components include: 1. Support base; 2. Rotating sleeve; 3. Lifting rod; 4. Fixed collar; 5. Movable pin; 6. Fixed sleeve; 7. Extension rod; 8. Positioning hole; 9. Bolt; 10. Connecting rod; 11. Connecting rod; 12. Connecting block; 13. Sliding groove; 14. Adjusting screw; 15. Clamping block; 16. Anti-slip pad; and 17. Guide rod.

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] like Figures 1-5 As shown, the present invention proposes a quick assembly and disassembly mechanism for pins used in construction machinery, including a support base 1, a rotating sleeve 2 on the upper surface of the support base 1, a lifting rod 3 installed inside the rotating sleeve 2, a fixing collar 4 connected to the top end of the lifting rod 3, a movable pin 5 connecting the rotating sleeve 2 and the lifting rod 3, a fixing sleeve 6 installed inside the fixing collar 4, an extension rod 7 installed inside the fixing sleeve 6, a positioning hole 8 on the extension rod 7, and a bolt 9 connecting the extension rod 7 and the fixing collar 4.

[0029] A connecting rod 10 is provided at one end of the fixed sleeve 6. A connecting rod 11 is connected between the connecting rod 10 and the fixed sleeve 6. A docking block 12 is connected at the other end of the connecting rod 10. A sliding groove 13 is provided on the docking block 12. An adjusting screw 14 is provided on the docking block 12. A clamping block 15 is provided at one end of the adjusting screw 14. An anti-slip pad 16 is installed on the clamping block 15. A guide rod 17 is provided on the clamping block 15.

[0030] The rotating sleeve 2 is rotatably connected to the middle position of the support base 1, the lifting rod 3 is slidably connected inside the rotating sleeve 2, and the fixed collar 4 is fixedly connected to the end of the lifting rod 3 away from the rotating sleeve 2.

[0031] The movable pin 5 passes through and slides to connect the rotating sleeve 2, the movable pin 5 passes through and slides to connect the lifting rod 3, and the fixed sleeve 6 is fixedly connected to the fixed collar 4.

[0032] The extension rod 7 is slidably connected to the fixed sleeve 6. The positioning holes 8 are evenly opened on the extension rod 7. The bolt 9 passes through and is threadedly connected to the extension rod 7. The bolt 9 is located in the positioning hole 8.

[0033] The connecting rod 11 passes through and rotatably connects to one end of the connecting rod 10, and the connecting rod 11 rotatably connects to the fixed sleeve 6.

[0034] The docking block 12 is rotatably connected to the end of the connecting rod 10 away from the fixed sleeve 6, and the sliding groove 13 is symmetrically opened on the docking block 12.

[0035] The end of the connecting rod 10 near the docking block 12 is slidably connected to the sliding groove 13.

[0036] The adjusting screws 14 are evenly distributed on the mating block 12. The adjusting screws 14 pass through and are threadedly connected to the mating block 12. The clamping block 15 is rotatably connected to the adjusting screws 14.

[0037] The anti-slip pad 16 is fixedly connected to the clamping block 15. The clamping block 15 is arc-shaped. The guide rod 17 is symmetrically arranged on the clamping block 15 and is fixedly connected to the clamping block 15. The guide rod 17 passes through and is slidably connected to the docking block 12.

[0038] In actual use, the support base 1 is installed in the designated position by bolts 9 and other components. The device is adjusted according to the height of the pin shaft. The movable pin 5 is manually removed to separate the movable pin 5 from the lifting rod 3. At this time, the lifting rod 3 can be raised and lowered in the rotating sleeve 2.

[0039] Manually control the docking block 12 to move to the position of the pin and put the docking block 12 on the pin. Manually rotate the adjusting screw 14. The rotation of the adjusting screw 14 drives the clamping block 15 to move inside the docking block 12, so that the clamping block 15 abuts against the outer surface of the pin through the anti-slip pad 16, so that the docking block 12 and the pin are fixed together. Under the action of the guide rod 17, the clamping block 15 will only move in a straight line and will not rotate with the adjusting screw 14.

[0040] After the connecting block 12 is fixed with the pin, the height of the fixing collar 4 is also fixed. At this time, the movable pin 5 is reinserted into the lifting rod 3 to fix the height of the lifting rod 3. Then, the bolt 9 can be manually rotated to disengage from the positioning hole 8. The extension rod 7 is pulled outward to increase the distance between the end of the extension rod 7 away from the fixing collar 4 and the fixing collar 4. After the extension rod 7 is adjusted to the appropriate position, the bolt 9 is used to fix the position of the extension rod 7 again. The worker holds the end of the extension rod 7 away from the fixing collar 4 and applies force to make the extension rod 7 drive the fixing sleeve 6 to rotate around the lifting rod 3. The pin is removed by using the lever principle. If the force after lever amplification is still insufficient to remove the pin, the position of the extension rod 7 can be adjusted until the pin is removed.

[0041] After removing the pin, reposition all components to reduce the overall size of the device, making it easier to carry and move. This is the overall workflow of the invention. Repeat this step the next time you use it. The actual operation is very simple and easy.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0044] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A quick-release mechanism for pins used in construction machinery, characterized in that: The device includes a support base (1), a rotating sleeve (2) is provided on the upper surface of the support base (1), a lifting rod (3) is installed inside the rotating sleeve (2), a fixed collar (4) is connected to the top of the lifting rod (3), a movable pin (5) is connected between the rotating sleeve (2) and the lifting rod (3), a fixed sleeve (6) is provided inside the fixed collar (4), an extension rod (7) is installed inside the fixed sleeve (6), a positioning hole (8) is provided on the extension rod (7), and a bolt (9) is connected between the extension rod (7) and the fixed collar (4).

2. The quick-release mechanism for pins used in construction machinery according to claim 1, characterized in that: One end of the fixed sleeve (6) is provided with a connecting rod (10), and a connecting rod (11) is connected between the connecting rod (10) and the fixed sleeve (6). The other end of the connecting rod (10) is connected with a docking block (12). A sliding groove (13) is provided on the docking block (12). An adjusting screw (14) is provided on the docking block (12). A clamping block (15) is provided at one end of the adjusting screw (14). An anti-slip pad (16) is installed on the clamping block (15). A guide rod (17) is provided on the clamping block (15).

3. The quick-release mechanism for pins used in construction machinery according to claim 2, characterized in that: The rotating sleeve (2) is rotatably connected to the middle position of the support base (1), the lifting rod (3) is slidably connected inside the rotating sleeve (2), and the fixed collar (4) is fixedly connected to the end of the lifting rod (3) away from the rotating sleeve (2).

4. The quick-release mechanism for pins used in construction machinery according to claim 3, characterized in that: The movable pin (5) passes through and slides through the rotating sleeve (2), the movable pin (5) passes through and slides through the lifting rod (3), and the fixed sleeve (6) is fixedly connected to the fixed collar (4).

5. The quick-release mechanism for pins used in construction machinery according to claim 4, characterized in that: The extension rod (7) is slidably connected to the fixed sleeve (6), the positioning holes (8) are evenly opened on the extension rod (7), the bolt (9) passes through and is threadedly connected to the extension rod (7), and the bolt (9) is located in the positioning hole (8).

6. The quick-release mechanism for pins used in construction machinery according to claim 5, characterized in that: The connecting rod (11) passes through and rotatably connects to one end of the connecting rod (10), and the connecting rod (11) rotatably connects to the fixed sleeve (6).

7. A quick-release mechanism for pins used in construction machinery according to claim 6, characterized in that: The docking block (12) is rotatably connected to the end of the connecting rod (10) away from the fixed sleeve (6), and the sliding groove (13) is symmetrically opened on the docking block (12).

8. A quick-release mechanism for pins used in construction machinery according to claim 7, characterized in that: The end of the connecting rod (10) near the docking block (12) is slidably connected in the sliding groove (13).

9. A quick-release mechanism for pins used in construction machinery according to claim 8, characterized in that: The adjusting screws (14) are evenly distributed on the docking block (12), the adjusting screws (14) pass through and are threadedly connected to the docking block (12), and the clamping block (15) is rotatably connected to the adjusting screws (14).

10. A quick-release mechanism for pins used in construction machinery according to claim 9, characterized in that: The anti-slip pad (16) is fixedly connected to the clamping block (15). The clamping block (15) is arc-shaped. The guide rod (17) is symmetrically arranged on the clamping block (15) and is fixedly connected to the clamping block (15). The guide rod (17) passes through and is slidably connected to the docking block (12).

Images