Disassembling and assembling tool for damping short section of cable logging tractor

Abstract

The utility model relates to petroleum engineering equipment, in particular to a dismounting tool for a shock-absorbing short section of a cable logging tractor, and aims to solve the problems that the conventional shock-absorbing short section is inconvenient to dismount and time-consuming and labor-consuming. According to the technical scheme, the device comprises two parallel buckle steel pipes, the upper ends of the two buckle steel pipes are connected through a supporting rod, and buckle screws are correspondingly arranged on the inner sides of the lower ends of the two buckle steel pipes; a T-shaped groove is formed in the center of the supporting rod, a T-shaped nut is arranged in the T-shaped groove, a positioning screw is connected into a threaded hole of the T-shaped nut through threads, and a rotating handle is arranged at the upper end of the positioning screw. The device is simple in structure, easy to operate, high in disassembly and assembly efficiency, good in safety and reliability and low in cost.

Description

Technical Field

[0001] The utility model relates to petroleum engineering equipment, in particular to a cable logging tractor shock-absorbing short joint disassembly and assembly tool. Background Art

[0002] As the application scale of cable logging tractor technology in the field of petroleum engineering continues to expand, the market demand for tractor equipment is increasing. In order to ensure the technical status of the tractor, reduce potential risks in operation, and extend its service life, the corresponding auxiliary short section came into being.

[0003] During the tractor perforating operation, the shock-absorbing short section is located at the bottom of the traction instrument string and the upper end of the perforating gun tool string. When the perforating gun is towed to the perforating layer for ignition construction, a huge blasting force will be generated, which will have a certain impact on the tractor at its upper end, and there is a risk of destroying the tractor drive wheel and other components. Therefore, a shock-absorbing short section is connected to the head end of the perforating gun at the end of the traction section. A certain number of disc springs are installed in the short section. It is a special spring that is conical in the axial direction and can withstand axial impact loads. During assembly, the disc springs are combined and strung on the support rod, and then external force is used to make them deform under the corresponding load, and then they are installed in the outer shell, and the outer shell is fixed with a pressure ring. Therefore, a certain potential energy is stored in the short section, which has the characteristics of small deformation under impact and high bearing capacity, and can play a shock-absorbing role.

[0004] Combined with the characteristics of construction work, it can be seen that the shock-absorbing short section is in a harsh working environment for a long time, so it is a unit that requires mandatory periodic maintenance in daily maintenance. There is a lack of professional disassembly and assembly tools during maintenance. Due to the influence of its internal stored potential energy, its disassembly and assembly not only wastes manpower but is also difficult to buckle and tighten in place, which brings certain difficulties to assembly.

[0005] Patent No. 201420539481.9 discloses a flexible short section disassembly and assembly tool, in which a fork-shaped connector is connected to a flexible short section instrument cap through a fixing pin, the right end of the fork-shaped connector is connected to a support rod, a handle is welded to the right end of the support rod, and a heavy hammer is mounted on the support rod and can move forward and backward along the support rod. It is for the disassembly and assembly of flexible short section structures, and is not suitable for shock-absorbing short sections.

[0006] Patent No. 201921777924.7 discloses a casing pup joint loading and unloading device. The casing pup joint loading and unloading device includes a pup joint clamping device, which is used to clamp onto the outer peripheral surface of the casing pup joint to be disassembled to drive the casing pup joint to rotate; the pup joint clamping device is provided with a driving arm, which extends toward one side of the pup joint clamping device, and is used to extend the top of the driving arm above the ground when in use; the top of the driving arm is provided with a booster rod connecting structure for connecting the corresponding booster rod, and the booster rod connecting structure is used to enable the booster rod to drive the pup joint clamping device to rotate through the driving arm. The above scheme solves the problem that when the casing pup joint is lower than the ground, the casing pup joint is difficult to disassemble and assemble due to limited space. This structure is also only applicable to casing pup joints, and has the problems of complex structure, large size, and inconvenient operation.

[0007] Therefore, it is necessary to design a disassembly and assembly tool suitable for the traction device shock-absorbing short section according to the process structure of the shock-absorbing short section. Summary of the invention

[0008] The utility model aims to solve the above technical problems and provide a cable logging tractor shock absorbing short joint disassembly and assembly tool which has simple structure, is easy to operate, has high disassembly and assembly efficiency, is safe and reliable, and has low cost.

[0009] The technical solution includes two parallel arranged snap-on steel pipes, the upper ends of the two snap-on steel pipes are connected via a support rod, and the inner sides of the lower ends of the two snap-on steel pipes are correspondingly provided with snap-on screws; a T-slot is opened in the center of the support rod, a T-nut is provided in the T-slot, a positioning screw is threadedly connected in the threaded hole of the T-nut, and a rotating handle is provided at the upper end of the positioning screw.

[0010] The rear end of the snap screw is fixed to the lower end of the snap steel pipe via a square nut.

[0011] Limiting holes are arranged at both ends of the support rod, and the rivets pass through the upper end of the buckle steel pipe and the limiting holes and are fixed to the support rod.

[0012] The limiting hole is an elliptical hole.

[0013] The lower end of the positioning screw is threadedly connected with a positioning nut.

[0014] The positioning nut is a semicircular head cap nut.

[0015] A protective tube is sleeved on the support rod outside the T-slot, and the positioning screw passes through the protective tube and is threadedly connected with the T-nut in the T-slot.

[0016] The utility model has a simple structure. The corresponding snap screws arranged on the inner side of the lower end of the snap steel pipe can clamp the observation port of the instrument. The lower end of the screw rod is used to resist the cap nut of the instrument, so that the instrument housing can be quickly snapped into place by using the screw rod principle. It is easy to operate and saves time and effort. The disassembly and assembly that used to take 3 people 1 hour to complete can now be easily completed by 1 person within 5 minutes, with good safety and reliability and high operating efficiency. The design of movable parallel snap steel pipes can be conveniently applied to the disassembly and assembly of shock-absorbing short sections of tractors with various pipe diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model.

[0018] Figure 2 It is a perspective view of the utility model.

[0019] Figure 3 Schematic diagram of support rod and positioning screw.

[0020] Figure 4 This is a state diagram used in the present utility model.

[0021] Among them, 1-support rod, 1.1-limiting hole, 1.2-protective tube, 1.3-T-nut, 1.4-T-slot, 2-snare steel pipe, 2.1-rivet, 3-snare screw, 3.1-square nut, 4-positioning screw, 4.1-turn handle, 4.2-positioning nut, 5-impact protective cap, 5.1-protective cap nut, 6-pressure ring, 7-instrument housing, 7.1-observation port, 8-disc spring. DETAILED DESCRIPTION

[0022] The utility model is further explained below in conjunction with the accompanying drawings:

[0023] Referring to the accompanying drawings, it includes two parallel arranged snap-on steel pipes 2, the upper ends of the two snap-on steel pipes 2 are connected via a support rod 1, and the inner sides of the lower ends of the two snap-on steel pipes 2 are correspondingly provided with snap-on screws 3, and the rear ends of the snap-on screws 3 are fixed to the lower ends of the snap-on steel pipes 2 via square nuts 3.1; a T-slot 1.4 is opened in the center of the support rod 1, a T-nut 1.3 is arranged in the T-slot 1.4, a positioning screw 4 is threadedly connected in the threaded hole of the T-nut 1.3, a rotating handle 4.1 is arranged at the upper end of the positioning screw 4, and a positioning nut 4.2 is threadedly connected at the lower end of the positioning screw 4, and the positioning nut 4.2 is a semi-circular head cap nut, which can be correspondingly positioned on the protective cap nut 5.1 of the impact type protective cap 5 without damaging the protective cap nut 5.1.

[0024] The two ends of the support rod 1 are provided with elliptical limiting holes 1.1, and the rivets 2.1 pass through the upper end of the snap-fit ​​steel pipe 2 and the limiting holes 1.1 to be fixed to the support rod 1, so that the two snap-fit ​​steel pipes 2 can move horizontally along the corresponding elliptical limiting holes 1.1.

[0025] A protective tube 1.2 is mounted on the support rod 1 outside the T-slot 1.4, and the positioning screw 4 passes through the protective tube 1.2 and is threadedly connected to the T-nut 1.3 in the T-slot 1.4. The protective tube 1.2 is arranged on the through pipe to prevent the T-nut 1.3 from falling out.

[0026] Operation process:

[0027] 1) Move the two snap-on steel tubes 2 outward along the limiting holes 1.1, open the distance between the two snap-on steel tubes 2, place the instrument housing 7 (specifically the housing of the shock-absorbing short-section instrument) between the two snap-on steel tubes 2, push the snap-on steel tube 2 toward the inside of the instrument housing 7 to make it close to the instrument housing 7, so that the snap-on screws 3 at the left and right symmetrical ends of the snap-on steel tube 2 snap on the observation port 7.1 on the shock-absorbing short-section instrument housing 7;

[0028] 2) Align the positioning nut 4.2 at the bottom end of the positioning screw 4 with the protective cap nut 5.1 of the impact protective cap 5, turn the rotating handle 4.1 at the top end of the positioning screw 4 clockwise, and tighten and fix the instrument housing 7 with the cooperation of the snap screw 3;

[0029] 3) Using the pressure ring removal tool, remove the pressure ring 6 fixed on the instrument housing 7;

[0030] 4) Slowly turn the rotating handle 4.1 at the top of the positioning screw 4 counterclockwise to loosen the positioning nut 4.2 positioned on the protective cap nut 5.1. At this time, under the action of the potential energy stored in the disc spring 8, the instrument housing 7 will be separated from the main body, and the shock-absorbing short section can be easily removed, so that the damaged disc spring 8 and the maintenance instrument can be easily replaced.

Claims

1. A cable logging tractor shock-absorbing short joint disassembly and assembly tool, comprising two parallel buckle steel pipes, characterized in that: The upper ends of the two snap-on steel pipes are connected via a support rod, and snap-on screws are correspondingly provided on the inner sides of the lower ends of the two snap-on steel pipes; a T-slot is opened in the center of the support rod, a T-nut is provided in the T-slot, a positioning screw is threadedly connected in the threaded hole of the T-nut, and a rotating handle is provided at the upper end of the positioning screw.

2. The cable logging tractor shock-absorbing short joint disassembly and assembly tool according to claim 1, characterized in that: The rear end of the snap screw is fixed to the lower end of the snap steel pipe via a square nut.

3. The cable logging tractor shock-absorbing short joint disassembly and assembly tool according to claim 1, characterized in that: Limiting holes are arranged at both ends of the support rod, and the rivets pass through the upper end of the buckle steel pipe and the limiting holes and are fixed to the support rod.

4. The cable logging tractor shock-absorbing short joint disassembly and assembly tool as claimed in claim 3, characterized in that: The limiting hole is an elliptical hole.

5. The cable logging tractor shock-absorbing short joint disassembly and assembly tool according to any one of claims 1 to 4, characterized in that: The lower end of the positioning screw is threadedly connected with a positioning nut.

6. The cable logging tractor shock-absorbing short joint disassembly and assembly tool according to claim 5, characterized in that: The positioning nut is a semicircular head cap nut.

7. The cable logging tractor shock-absorbing short joint disassembly and assembly tool according to any one of claims 1 to 3, characterized in that: A protective tube is sleeved on the support rod outside the T-slot, and the positioning screw passes through the protective tube and is threadedly connected with the T-nut in the T-slot.

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