Disassembling and assembling tool for drilling machine base connecting large pin shaft

Abstract

The invention provides a dismounting tool for a drilling machine base connecting large pin shaft, and relates to the technical field of equipment maintenance. The dismounting tool drives the pin shaft to axially move along a pin hole through a power mechanism; the disassembling and assembling tool comprises a connecting rod, a lining cylinder and a hollow hydraulic cylinder, when the pin shaft is disassembled and assembled, the connecting rod sequentially penetrates through the hollow hydraulic cylinder and the lining cylinder, and the end, penetrating through the lining cylinder, of the connecting rod is connected with the pin shaft in a matched mode. One end of the bushing abuts against the pin hole lug plate, the other end of the bushing is fixed to the hollow hydraulic cylinder, the other end of the connecting rod extends out of the hollow hydraulic cylinder and is connected with the hollow hydraulic cylinder in an abutting mode through a limiting pull block assembled on the connecting rod, when the hollow hydraulic cylinder extends out, the limiting pull block drives the connecting rod to move, the connecting rod drives the pin shaft to move, and disassembly and assembly of the pin shaft are completed. The pin shaft mounting and dismounting device is simple in structural connection mode and convenient to mount, the dismounting and mounting time is shortened, the workload of technicians is reduced, time and labor are saved, the pin shaft can be dismounted and mounted more efficiently, and the working efficiency of equipment maintenance is improved.

Description

Technical Field

[0001] The invention relates to the technical field of equipment maintenance, in particular to a drilling rig base connecting large pin shaft disassembly and assembly tool. Background Art

[0002] At present, most of the components of the drilling rig base are connected by pins, and the connecting ear plates have single holes and double holes; the connection methods include horizontal, vertical and mutually perpendicular; the positions are high and low, and the space at which most pins are located is limited.

[0003] Traditional pin disassembly and assembly usually requires the cooperation of multiple people, using a hammer to repeatedly strike the pin. When disassembling, first lift the hammer in the direction of the pin axis, adjust it to a suitable height, and repeatedly swing the hammer to hammer the end of the pin. As the displacement changes, it is necessary to add push rods of different lengths until the pin is removed. When installing, first put the pin cone into the pin hole and support or fix the pin, then lift the hammer in the direction of the pin axis, adjust it to a suitable height, and repeatedly swing the hammer to hammer the end of the pin until it is installed in place. The traditional method is inefficient and has certain safety hazards. The tilted impact angle can easily cause the pin and push rod to pop out. For large pins with a pin diameter of more than 100mm, the adhesion area is large and the friction is large. If the operating space is limited, due to the long length and heavy weight of the hammer, the swing amplitude is small and the impact force is weak, making it more difficult to disassemble and install using traditional tools and methods.

[0004] There are also existing technologies that improve traditional pin disassembly and assembly tools and methods. For example, in the patent document, the application date is February 10, 2022, and the application number is CN202210123755.5. The name is an invention patent for a hydraulic support pin disassembly and assembly tool equipment, which includes a vehicle body, and a plug-in and pull-out device and a storage device arranged on the vehicle body, and the wheel is rotatably arranged on the vehicle body; the plug-in and pull-out device includes a first lifting cylinder, a lifting platform, a support arm, a plug-in and pull-out cylinder and a pin shaft mating head arranged in sequence, the first lifting cylinder is arranged on the vehicle body in a vertical direction, the lifting platform is arranged on the top of the first lifting cylinder, the support arm is arranged on the lifting platform, and the plug-in and pull-out cylinder is arranged on the support arm in a horizontal direction. The pin shaft mating head is rotatably connected to the end of the piston rod of the plug-in and pull-out cylinder, and a thread matching the pin shaft to be disassembled is arranged on the outside of the pin shaft mating head, and a laser sensor is arranged on the plug-in and pull-out cylinder; the storage device includes a second lifting cylinder and a storage tray thereon. This prior art solves the difficulties in disassembling the pin shaft using traditional tools and methods, but it still has shortcomings. The equipment of this prior art is heavy, large in size, high in equipment cost, difficult to store, and it takes a long time to drive the equipment to a position near the disassembly pin shaft. Summary of the invention

[0005] In order to address the deficiencies in the prior art, the present invention provides a tool for disassembling and assembling a large pin shaft for connecting a drilling rig base. The present invention has a simple structure, an easy connection method, and is easy to install. It occupies a small space and is easy to store, which is beneficial for the next use. It effectively solves the difficulty in disassembling and assembling the pin shaft, shortens the disassembly and assembly time, reduces the workload of technicians, saves time and effort, can disassemble and install the pin shaft more efficiently, and improves the working efficiency of the maintenance equipment.

[0006] The technical solution of the present invention is as follows: A large pin disassembly and assembly tool connected to a drilling rig base is used for disassembling and assembling the pin. The disassembly and assembly tool drives the pin to move axially along the pin hole through a power mechanism. The disassembly and assembly tool comprises a connecting rod, a bushing and a hollow hydraulic cylinder. When disassembling and assembling the pin, the connecting rod passes through the hollow hydraulic cylinder and the bushing in sequence, and one end of the connecting rod passes through the bushing and is connected with the pin. One end of the bushing is abutted against the pin hole ear plate, and the other end is fixed to the hollow hydraulic cylinder. The other end of the connecting rod extends out of the hollow hydraulic cylinder and is abutted against and connected with the hollow hydraulic cylinder through a limit pull block assembled thereon. When the hollow hydraulic cylinder is extended, the connecting rod is driven to move through the limit pull block, and the connecting rod drives the pin to move, thereby completing the disassembly and assembly of the pin.

[0007] Furthermore, the liner is cylindrical and hollow inside.

[0008] Furthermore, one end of the liner is evenly provided with arc-shaped baffles extending upward in the circumferential direction.

[0009] Furthermore, a through hole for the connecting rod to pass through is correspondingly arranged at one end of the bushing, and an inlet for the pin shaft to enter the interior of the bushing is correspondingly arranged at the other end.

[0010] Furthermore, both ends of the hollow hydraulic cylinder are provided with connecting holes for the connecting rod to pass through.

[0011] Furthermore, the through hole, the inlet, the connecting hole and the pin hole are all on the same axis.

[0012] Furthermore, the diameter of the bushing is greater than the shaft diameter of the pin.

[0013] Furthermore, threads are provided at both ends of the connecting rod, one end of the connecting rod is threadedly connected to a pin shaft with a threaded hole, and the other end is tightened and fixed to the hollow hydraulic cylinder by a locking nut.

[0014] Furthermore, the power mechanism is a hydraulic pump.

[0015] Furthermore, the hollow hydraulic cylinder and the hydraulic pump are both provided with hose connectors, and the high-pressure hose is respectively connected to the hose connectors on the hollow hydraulic cylinder and the hydraulic pump so that the hydraulic pressure generated by the hydraulic pump enters the hollow hydraulic cylinder.

[0016] The working principle of the present invention is as follows: 1. When installing the pin shaft, the connecting rod passes through the ear plates at both ends of the pin hole and is threadedly connected with the pin shaft with a threaded hole. Then the connecting rod passes through the hollow hydraulic cylinder and the bushing in sequence. One end of the bushing is against the ear plate of the pin hole. The other end of the bushing is evenly provided with arc-shaped baffles extending upward in the circumferential direction to fix one end of the hollow hydraulic cylinder. The other end of the hollow hydraulic cylinder is threadedly connected to the connecting rod through a locking nut to lock the hollow hydraulic cylinder. Then, the high-pressure hose is respectively connected to the hose connectors on the hollow hydraulic cylinder and the hydraulic pump. Finally, the hydraulic pump is started so that the hydraulic pressure generated by the hydraulic pump enters the hollow hydraulic cylinder. The hollow hydraulic cylinder drives the connecting rod to move, and the connecting rod drives the pin shaft to move axially along the pin hole until the pin shaft completely enters the pin hole, and the hydraulic pump is turned off.

[0017] 2. When removing the pin shaft, thread the connecting rod with one end of the pin shaft with a threaded hole in the pin hole, then pass the connecting rod through a bushing of appropriate length and the hollow hydraulic cylinder in turn, and use a locking nut to thread the connecting rod to lock the hollow hydraulic cylinder, connect the hollow hydraulic cylinder and the hydraulic pump with a high-pressure hose, and finally start the hydraulic pump so that the hydraulic pressure generated by the hydraulic pump enters the hollow hydraulic cylinder. The hollow hydraulic cylinder drives the connecting rod to move, and the connecting rod drives the pin shaft to move axially along the pin hole until the pin shaft is completely out of the pin hole, and then turn off the hydraulic pump.

[0018] The beneficial effects of the present invention are as follows: 1. In the present invention, the bushing is set to be cylindrical and hollow inside, which matches the shape of the pin shaft. When the pin shaft smoothly enters the pin hole or leaves the pin hole, a part or most of the pin shaft can enter the bushing, which can protect the pin shaft and stabilize the pin shaft. In addition, the diameter of the bushing is larger than the shaft diameter of the pin shaft, which protects the pin shaft when entering the bushing and avoids friction between the pin shaft and the inner wall of the bushing, which causes wear on the pin shaft.

[0019] 2. In the present invention, one end of the liner is evenly provided with arc-shaped baffles extending upward in the circumferential direction. The inlet formed by the arc-shaped baffles can allow one end of the hollow hydraulic cylinder to be embedded in the space formed by the arc-shaped baffles to stabilize the hollow hydraulic cylinder. When the entire disassembly and assembly tool is in operation, the end of the liner in contact with the hollow hydraulic cylinder serves as the load-bearing end of the hollow hydraulic cylinder.

[0020] 3. In the present invention, a through hole for the connecting rod to pass through is correspondingly provided at one end of the bushing, and an inlet for the pin to enter the interior of the bushing is correspondingly provided at the other end. Connecting holes for the connecting rod to pass through are provided at both ends of the hollow hydraulic cylinder, ensuring that the connecting rod can smoothly pass through the hollow hydraulic cylinder and the bushing; the through hole, the inlet, the connecting hole and the pin are on the same axis, ensuring that they move in the same horizontal direction when the disassembly and assembly tool is in operation as a whole, preventing disassembly and assembly failure due to the skewed state of the pin when the pin is removed or installed.

[0021] 4. In the present invention, both ends of the connecting rod are provided with threads, one end of the connecting rod is threadedly connected to the pin shaft through a locking nut, and the other end is screwed and fixed to the hollow hydraulic cylinder through a locking nut. This arrangement ensures the stability of the entire disassembly and assembly tool, and ensures that when the disassembly and assembly tool is in operation, the two ends of the connecting rod will not loosen and cause disassembly and assembly failure.

[0022] 5. The present invention has a simple structure, a simple connection method, is easy and convenient to install, has a light overall weight, is low in cost, is easy to operate, shortens the disassembly and assembly time, reduces the workload of technicians, and improves the work efficiency of repairing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention.

[0024] Figure numerals: 1-pin, 2-connecting rod, 3-bushing, 4-hollow hydraulic cylinder, 5-locking nut. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings of the present invention specification to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1 As a preferred embodiment of the present invention, refer to the attached specification Figure 1 As shown, this embodiment provides a large pin disassembly and assembly tool for connecting the base of a drilling rig, which is used for disassembling and assembling the pin. The disassembly and assembly tool drives the pin 1 to move axially along the pin hole through a power mechanism; the disassembly and assembly tool includes a connecting rod 2, a bushing 3, and a hollow hydraulic cylinder 4. When disassembling and assembling the pin 1, the connecting rod 2 passes through the hollow hydraulic cylinder 4 and the bushing 3 in sequence, and one end of the connecting rod 2 passes through the bushing 3 and is connected with the pin 1; one end of the bushing 3 is abutted against the pin hole ear plate, and the other end is fixed to the hollow hydraulic cylinder 4, and the other end of the connecting rod 2 extends out of the hollow hydraulic cylinder 4, and is abutted against and connected with the hollow hydraulic cylinder 4 through a limit pull block assembled thereon. When the hollow hydraulic cylinder 4 is extended, the connecting rod 2 is driven to move through the limit pull block, and the connecting rod 2 drives the pin 1 to move, thereby completing the disassembly and assembly of the pin 1.

[0027] In this embodiment, the present invention has a simple structure, a simple connection method, is easy to install, occupies a small space, is easy to store, is beneficial to the next use, and has a low equipment cost. It effectively solves the difficulty of disassembling and assembling the pin shaft 1, shortens the disassembly and assembly time, reduces the workload of technicians, saves time and effort, can more efficiently disassemble and install the pin shaft 1, and improves the working efficiency of the maintenance equipment.

[0028] Example 2 As another preferred embodiment of the present invention, this embodiment further elaborates and supplements the implementation method of the present invention on the basis of Embodiment 1.

[0029] As an implementation of this embodiment, the bushing 3 is cylindrical and hollow inside, which matches the shape of the pin 1. When the pin 1 enters or leaves the pin hole, a part or most of the pin 1 can enter the bushing 3, which can protect and stabilize the pin 1.

[0030] As another implementation of this embodiment, one end of the liner is evenly provided with arc-shaped baffles extending upward in the circumferential direction. The arc-shaped baffles can allow one end of the hollow hydraulic cylinder to be embedded in the space formed by the arc-shaped baffles to stabilize the hollow hydraulic cylinder.

[0031] Example 3 As another preferred embodiment of the present invention, this embodiment further elaborates and supplements the implementation mode of the present invention on the basis of Embodiment 1 or Embodiment 2.

[0032] As another implementation of this embodiment, one end of the bushing 3 is correspondingly provided with a through hole for the connecting rod 2 to pass through, and the other end is correspondingly provided with an inlet for the pin shaft 1 to enter the interior of the bushing 3.

[0033] As another implementation of this embodiment, both ends of the hollow hydraulic cylinder 4 are provided with connecting holes for the connecting rod 2 to pass through.

[0034] As another implementation of this embodiment, the through hole, the inlet, and the connecting hole are all coaxial with the pin hole. This arrangement ensures that the connecting rod 2 is in a horizontal direction when driving the pin shaft 1 to move, and prevents the pin shaft 1 from being in a skewed state when removing or installing the pin shaft 1, resulting in disassembly and assembly failure.

[0035] As another implementation of this embodiment, the diameter of the bushing 3 is larger than the diameter of the pin 1. The pin 1 is protected from friction with the inner wall of the bushing 3 and wear of the pin 1 when entering the bushing 3.

[0036] As another implementation of this embodiment, both ends of the connecting rod 2 are provided with threads, one end of the connecting rod 2 is threadedly connected to the pin shaft 1 with a threaded hole, and the other end is screwed and fixed to the hollow hydraulic cylinder 4 by a locking nut 5. This arrangement ensures the stability of the entire disassembly and assembly tool, and ensures that when the disassembly and assembly tool is in operation, the two ends of the connecting rod 2 will not loosen, causing the disassembly and assembly tool to loosen, resulting in disassembly and assembly failure.

[0037] Example 4 As an implementation mode of this embodiment, the power mechanism is a hydraulic pump, which serves as the power source of the entire disassembly and assembly tool, ensuring that the disassembly and assembly tool can operate normally.

[0038] As another implementation of this embodiment, the hollow hydraulic cylinder 4 and the hydraulic pump are both provided with hose connectors, and the high-pressure hose is respectively connected to the hose connectors on the hollow hydraulic cylinder 4 and the hydraulic pump so that the hydraulic pressure generated by the hydraulic pump enters the hollow hydraulic cylinder 4.

Claims

1. A tool for disassembling and assembling a large pin connected to a drilling rig base, used for disassembling and assembling a pin, characterized in that The disassembly and assembly tool drives the pin shaft (1) to move axially along the pin hole through a power mechanism; the disassembly and assembly tool comprises a connecting rod (2), a bushing (3), and a hollow hydraulic cylinder (4); when disassembling and assembling the pin shaft (1), the connecting rod (2) passes through the hollow hydraulic cylinder (4) and the bushing (3) in sequence; one end of the connecting rod (2) passes through the bushing (3) and is matched and connected with the pin shaft (1); one end of the bushing (3) abuts against the pin hole ear plate, and the other end is fixed to the hollow hydraulic cylinder (4); the other end of the connecting rod (2) extends out of the hollow hydraulic cylinder (4) and abuts against the hollow hydraulic cylinder (4) through a limit pull block assembled thereon; when the hollow hydraulic cylinder (4) extends out, the connecting rod (2) is driven to move through the limit pull block, and the connecting rod (2) drives the pin shaft (1) to move, thereby completing the disassembly and assembly of the pin shaft (1).

2. A drilling rig base connecting large pin disassembly and assembly tool as claimed in claim 1, characterized in that: The liner (3) is cylindrical and hollow inside.

3. A drilling rig base connecting large pin disassembly and assembly tool as claimed in claim 2, characterized in that: One end of the liner (3) is evenly provided with arc-shaped baffles extending upward in the circumferential direction.

4. A drilling rig base connecting large pin disassembly and assembly tool as claimed in claim 3, characterized in that: A through hole for the connecting rod (2) to pass through is correspondingly provided at one end of the bushing (3), and an inlet for the pin shaft (1) to enter the interior of the bushing (3) is correspondingly provided at the other end.

5. A drilling rig base connecting large pin disassembly and assembly tool as claimed in claim 4, characterized in that: Both ends of the hollow hydraulic cylinder (4) are provided with connection holes for the connection rod (2) to pass through.

6. A drilling rig base connecting large pin disassembly and assembly tool as claimed in claim 5, characterized in that: The through hole, the inlet, and the connecting hole are all located on the same axis as the pin shaft (1).

7. A drilling rig base connecting large pin disassembly and assembly tool as claimed in any one of claims 1 to 6, characterized in that: The diameter of the bushing (3) is greater than the shaft diameter of the pin (1).

8. A drilling rig base connecting large pin disassembly and assembly tool as claimed in any one of claims 1 to 6, characterized in that: Both ends of the connecting rod (2) are provided with threads; one end of the connecting rod (2) is threadedly connected to a pin shaft (1) with a threaded hole, and the other end is screwed and fixed to the hollow hydraulic cylinder (4) via a locking nut (5).

9. A drilling rig base connecting large pin disassembly and assembly tool as claimed in claim 1, characterized in that: The power mechanism is a hydraulic pump.

10. A drilling rig base connecting large pin disassembly and assembly tool as claimed in claim 9, characterized in that: The hollow hydraulic cylinder (4) and the hydraulic pump are both provided with hose connectors, and the high-pressure hoses are respectively connected to the hose connectors on the hollow hydraulic cylinder (4) and the hydraulic pump so that the hydraulic pressure generated by the hydraulic pump enters the hollow hydraulic cylinder (4).

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