A mobile device for oil pipes

Abstract

The invention relates to the technical field of auxiliary devices for well repair operations, and discloses a petroleum pipe moving device, specifically, a loading and unloading device is placed above a gear, a gear cover at the bottom of the loading and unloading device is connected to the gear through a connecting shaft, and the bottom of the gear cover is fixed in a sliding track of an auxiliary track of a transport device, a front base connected to a front base earring is fixedly installed at a certain distance below the transport device near a catwalk, the front base is fixed to the lower part of the mechanism through a front base connecting pin and the front base earring, and a catwalk fixing device is fixed on the front base, and the catwalk fixing device can fix the upper and lower pipe devices of the well repair operation catwalk to the catwalk; the invention has a small transportation range during the process of transporting pipes and rods through the device, the loading and unloading device has a fixed track, and the device can be fixed to the catwalk, thereby ensuring the stability of the transportation process, and will not affect the various performances of the catwalk and the pipes and rods, and the controllable transportation process improves the safety during operation, and the automatic transportation of the device reduces the labor intensity of workers.

Description

Technical Field

[0001] The invention relates to an auxiliary device for well repairing operation, in particular to a petroleum pipe moving device. Background Art

[0002] During the well repair operation, the work of raising and lowering pipes is the most tedious. In the existing well repair operation, the work of raising and lowering pipes on the catwalk is mostly completed by workers using clamps, small pulleys and elevators. The workers have high labor intensity, tedious work content, and there are safety hazards in the operation process. At the same time, there is also a pipe pulling mechanical device to assist in completing the work of raising and lowering pipes on the catwalk, but this device allows the pipe rod to roll freely inside the mechanical device, which poses a safety hazard and is also easy to damage the catwalk and the pipe rod.

[0003] In daily use of the existing pipe moving device, because the flipping direction of the flipping arm is counterclockwise, the vertical catwalk itself also needs to be flipped to work. When the vertical catwalk is not flipped and laid flat, the flipping arm flips to the right side above the vertical catwalk, stops flipping and waits at this position. When the vertical catwalk is flipped and nearly laid flat, the flipping arm continues to flip. When the vertical catwalk is flipped and laid flat, the flipping arm also flips to above the vertical catwalk to wait for further pipe placement. After the flipping arm flips to the corresponding angle, it arrives above the vertical catwalk. When facing different oil pipe transportation, the different sizes and models of oil pipes will affect the transportation safety of the equipment, thereby affecting the operator's experience.

[0004] During daily use of the existing pipe moving device, the driving piston rod drives the movable clamping claw to move away from the fixed clamping claw. The pipe rod moves downward due to gravity and no longer contacts the horizontal surface on the movable clamping claw. By adjusting the driving distance of the piston rod, the distance between the movable clamping claw and the fixed clamping claw can be adjusted, thereby adjusting the relative position of the pipe rod with respect to the center plane of the catwalk to ensure that the pipe rod is always on the center plane of the catwalk. When the pipe rod is on the center plane of the catwalk and contacts the fixed clamping claw of the catwalk, the fixed clamping claw of the catwalk supports the pipe rod. At this time, the movable clamping claw and the fixed clamping claw are fully opened, and the flipping arm is flipped in the opposite direction. The process will cause certain safety hazards in the moving track when the flipping arm for clamping the pipe rod is working because the mechanical device is too redundant. Summary of the invention

[0005] In order to overcome the above defects of the prior art, the present invention provides a petroleum pipe moving device to solve the problems existing in the above background technology.

[0006] The present invention provides the following technical solutions: The present invention mentions a device for raising and lowering pipes on a catwalk for well repair operations, comprising a loading and unloading device, a transport device, a front base and a rear base. The loading and unloading device is placed above the gear, and the gear cover at the bottom of the loading and unloading device is connected to the gear through a connecting shaft, and the bottom of the gear cover is fixed in the sliding track of the auxiliary track of the transport device. A front base connected to the front base earring is fixedly installed at a certain distance below the transport device near the catwalk. The front base is fixed to the lower part of the mechanism through the front base connecting shaft and the front base earring, and at the same time, a catwalk fixing device is fixed on the front base. The catwalk fixing device can fix the device for raising and lowering pipes on the catwalk for well repair operations to the catwalk, thereby improving the stability and scope of application of the mechanism during operation. The transport device is fixed to the rear base keyway below one end of the pipe rack, and the hydraulic rod of the rear base is fixed to the keyway sliding shaft and can move in the rear base keyway. The front base and the rear base are fixed with a front base connecting rod, and the pipe raising and lowering device of the well repair operation catwalk is composed of three completely identical mechanisms constituted by the above-mentioned devices through the rear base connecting rod. At the same time, a transmission shaft is used in the middle of the loading and unloading devices of the three mechanisms to fix the transmission, but the gear under the transport device of the middle mechanism is replaced by a gear power motor, which provides power for the free transportation of pipe rods between the pipe rack and the catwalk for the entire well repair operation catwalk pipe raising and lowering device.

[0007] Furthermore, the loading and unloading device is mainly composed of a front baffle, a bottom plate, a rear baffle, a base, a rear hydraulic cylinder, a bottom plate hydraulic cylinder, a front hydraulic cylinder and a gear cover. The base is fixed above the gear cover, and the base is connected to the bottom plate and the front baffle pin. The front end of the front baffle is connected to the front hydraulic cylinder, and the front hydraulic cylinder is fixed to the outside of the gear cover. The outer end of the bottom plate is connected to the rear baffle key, and the outside of the bottom plate is connected to the bottom plate hydraulic cylinder, and the bottom plate hydraulic cylinder is fixed to the outside of the gear cover. The above-mentioned rear baffle is connected to the rear hydraulic cylinder, and the rear hydraulic cylinder is fixed to the outside of the gear cover. The loading and unloading device completes the pipe and rod loading and unloading task by changing the shape of each hydraulic cylinder. At the same time, the range of loading and unloading pipes and rods is determined by the bottom plate length of the loading and unloading device. By designing a suitable bottom plate length, the loading and unloading of pipes and rods of different specifications can be completed.

[0008] Furthermore, the transport device is mainly composed of a gear, a rack, an auxiliary track, a rear baffle of the transport device, and a front baffle of the transport device. The gear is meshed above the rack, and the auxiliary tracks are fixed on both sides of the rack. At the same time, the front baffle of the transport device is fixed at the front end of the rack and the auxiliary track, and the rear baffle of the transport device is fixed at the rear end, so as to prevent the movement of the loading and unloading device on the upper part of the transport device from deviating from the designed track and improve the safety of the device. The bottom of the gear cover can be fixed in the sliding track of the auxiliary track to ensure the smoothness of the transport operation process.

[0009] Furthermore, the supporting base is mainly composed of a front base, a rear base, a front base earring, a front base connecting pin, a catwalk fixing device, a rear base keyway, and a keyway sliding shaft. The front base earring is fixed to the lower end of the transport device on the catwalk side of the mechanism, the front base is connected and fixed to the front base earring by the front base connecting pin, the rear base keyway is fixed to the lower part of the transport device on the pipe rack side of the mechanism, and the hydraulic rod of the rear base is fixed to the keyway sliding shaft and can move in the keyway of the rear base.

[0010] Furthermore, the upper and lower pipe devices of the well repair operation catwalk are first placed between the pipe rack and the catwalk, and then the front end of the mechanism and the catwalk are fixed to a suitable position by the catwalk fixing device of the front base.

[0011] Furthermore, after the front base is fixed to the catwalk, the hydraulic rod of the rear base is adjusted to a suitable position to complete the adaptation of the rear base of the mechanism and the pipe rack, and finally complete the adaptation and fixation of the upper and lower pipe devices of the catwalk for well repair operations and the catwalk of the pipe rack.

[0012] Furthermore, when the pipe rod is put on, the gear power motor provides power to rotate the gear, driving the upper loading and unloading device to move to a fixed position at one end of the pipe rack. The rear hydraulic cylinder extends to control the rear baffle to pick the pipe rod in the pipe rack into the loading and unloading device, completing the loading of the mechanism.

[0013] Furthermore, the front hydraulic cylinder is extended to retract the front baffle, and the entire loading and unloading device forms a groove for fixing the pipe rod. The gear power motor provides power to complete the rotation of the gear on the rack, driving the loading and unloading device to be transported to a fixed position on one side of the catwalk.

[0014] Furthermore, after the transport device is fixed, the front hydraulic cylinder retracts the front baffle and lowers it, while the bottom plate hydraulic cylinder extends, so that the front baffle, bottom plate and rear baffle form a slope, allowing the pipe rods inside the loading and unloading device to slide into the catwalk.

[0015] Furthermore, after the pipe rod is transported, the bottom plate hydraulic cylinder and the rear hydraulic cylinder are retracted to return the tailgate base to its initial state, and at the same time, the gear power motor provides power to complete the rotation of the gear on the rack to move the loading and unloading device to the starting position and wait for the next operation instruction.

[0016] Furthermore, when the pipe rod is lowered, the gear power motor provides power to rotate the gear, driving the upper loading and unloading device to move to a fixed position at one end of the catwalk, the rear hydraulic cylinder extends to control the rear baffle to retract a certain angle and then fix it, and the front hydraulic cylinder extends to control the rear baffle to retract a certain angle to pick the pipe rod in the catwalk into the loading and unloading device, completing the loading of the mechanism.

[0017] Furthermore, the gear power motor provides power to the gear to complete the movement on the rack, driving the loading and unloading device to be transported to a fixed position on one side of the pipe rack.

[0018] Furthermore, after the transport device is fixed, the rear hydraulic cylinder retracts and the rear baffle is lowered. At this time, due to the angle of the mechanism itself, the front baffle, bottom plate and rear baffle form a slope, and the pipe rods in the loading and unloading device automatically slide into the pipe rack.

[0019] Furthermore, after the pipe rod is transported, the gear power motor provides power to rotate the gear on the rack to move the loading and unloading device to the starting position and wait for the next operation instruction.

[0020] Technical effects and advantages of the present invention:

[0021] 1. The present invention can load and transport pipes of different specifications without replacing clamps, and can complete automated transportation between the pipe rack and the catwalk, thereby improving operating efficiency. The mechanism runs smoothly and the operating process is controllable, thereby improving safety during production operations. Before loading, the base can be fixed to the catwalk, and the height of the base can be adjusted after loading to match the pipe rack, thereby increasing the scope of application of the device. At the same time, the mechanism is relatively simple, easy to manufacture, and has good market competitiveness.

[0022] 2. The present invention uses a device to transport pipes and rods with a small transportation range. The loading and unloading device has a fixed track. At the same time, the device can be fixed to the catwalk, which ensures the stability of the transportation process and will not affect the various performances of the catwalk and the pipes and rods. The controllable transportation process improves the safety during operation. At the same time, the automated transportation of the device reduces the labor intensity of workers.

[0023] 3. The present invention installs an adjusting device on the front base, which allows the operator to send the transported oil pipe to the device that is adapted and fixed to the catwalk. The adjusting device installed on the front base can adjust the height of the front base to make it better adapted to the pipe rack, thereby widening the application range of the device and effectively optimizing the operator's experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a catwalk pipe lowering and lowering device for well repair operations of the present invention;

[0025] Figure 2 It is a structural schematic diagram of a catwalk pipe lowering and lowering device for well repairing operation of the present invention used in conjunction with the catwalk;

[0026] Figure 3 It is a side structural schematic diagram of a catwalk pipe lowering and lowering device for well repair operations of the present invention;

[0027] Figure 4 It is a schematic diagram of a loading and unloading device for a catwalk pipe lowering and lowering device for well repair operations of the present invention;

[0028] Figure 5 It is a schematic diagram of a catwalk pipe lowering and lowering device for well repairing operation of the present invention for loading large-size pipe rods;

[0029] Figure 6 This is a schematic diagram of a catwalk pipe lowering and lowering device for well repair operations of the present invention for loading small-sized pipe rods

[0030] Figure 7 It is a schematic diagram of a transport device for a catwalk pipe lowering and lowering device for well repair operations of the present invention;

[0031] Figure 8 It is a cross-sectional schematic diagram of a transport device for a catwalk pipe lowering and lowering device for well repair operations of the present invention;

[0032] Fig. 9 It is a schematic diagram of the work of loading pipe rods when the pipe raising and lowering device of a catwalk for well repairing operation of the present invention is put on the pipe rods;

[0033] Fig.10 It is a schematic diagram of the operation of transporting pipe rods when the pipe rods are loaded on a pipe loading and unloading device for a catwalk for well repairing operation of the present invention;

[0034] Fig.11 It is a schematic diagram of the work of unloading pipe rods when loading pipe rods on a pipe loading and unloading device for a catwalk for well repairing operation of the present invention;

[0035] The accompanying drawings are marked as follows: 1. loading and unloading device; 101. front baffle; 102. bottom plate; 103. rear baffle; 104. base; 105. rear hydraulic cylinder; 106. bottom plate hydraulic cylinder; 107. front hydraulic cylinder; 108. gear cover; 2. transportation device; 201. gear; 202. rack; 203. auxiliary rail; 204. rear baffle of transportation device; 205. front baffle of transportation device; 3. front base; 301. front base earring; 302. front base connecting pin; 303. catwalk fixing device; 4. rear base; 401. rear base keyway; 402. keyway sliding shaft; 5. front base connecting rod; 6. rear base connecting rod; 7. transmission shaft; 8. gear power motor; 9. pipe rack; 10. catwalk; 11. pipe rod; 111. large-size pipe rod; 112. small-size pipe rod; 12. catwalk upper and lower pipe device for well repair operation. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. In addition, the forms of the various structures described in the following embodiments are only examples. The oil pipe moving device involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0037] Reference Figure 1-11The present invention provides a mobile device for oil pipes, comprising a loading and unloading device 1, a transport device 2, a front base 3 and a rear base 4. The loading and unloading device 1 is placed above a gear 201. The gear cover 108 at the bottom of the loading and unloading device 1 is connected to the gear 201 through a connecting shaft, and the bottom of the gear cover 108 is fixed in the sliding track of the auxiliary track 203 of the transport device 2. The front base 3 is fixed to the front base earring 301 at a certain distance below the transport device 2 near the catwalk 10. The front base 3 is fixed to the lower part of the mechanism through the front base connecting pin 302 and the front base earring 301. At the same time, the catwalk fixing device 303 is fixed on the front base 3. The catwalk fixing device 303 can fix the catwalk pipe up and down device 12 of the well repair operation with the catwalk 10 to improve the stability and application range of the mechanism during operation. The rear base keyway 401 is fixed below one end of the transport device 2 near the pipe rack 9, and the hydraulic rod of the rear base 4 and the keyway sliding shaft 402 are fixed to the rear base keyway 401 for movement. The front base 3 and the rear base 4 are fixed by the front base connecting rod 5. The pipe loading and unloading device 12 of the well repair operation catwalk is composed of three identical mechanisms composed of the above-mentioned devices through the rear base connecting rod 6. At the same time, the transmission shaft 7 is used to fix the transmission in the middle of the loading and unloading device 1 of the three mechanisms, but the gear 201 under the transportation device 2 of the middle mechanism is replaced by the gear power motor 8, which provides the power for the whole well repair operation catwalk pipe loading and unloading device 12 to freely transport the pipe rod 11 between the pipe rack 9 and the catwalk 10.

[0038] In a preferred embodiment, the loading and unloading device 1 is mainly composed of a front baffle 101, a bottom plate 102, a rear baffle 103, a base 104, a rear hydraulic cylinder 105, a bottom plate hydraulic cylinder 106, a front hydraulic cylinder 107 and a gear cover 108. The base 104 is fixed above the gear cover 108, and the base 104 is pin-connected to the bottom plate 102 and the front baffle 101. The front end of the front baffle 101 is connected to the front hydraulic cylinder 107, and the front hydraulic cylinder 107 is fixed on the outside of the gear cover 108. The outer end of the bottom plate 102 is connected to the rear baffle 103, and the outside of the bottom plate 102 is connected to the bottom plate hydraulic cylinder 106, and the bottom plate hydraulic cylinder 106 is fixed on the outside of the gear cover 108. The above-mentioned rear baffle 103 is connected to the rear hydraulic cylinder 105, and the rear hydraulic cylinder 105 is fixed on the outside of the gear cover 108. The loading and unloading device 1 completes the loading and unloading task of the pipe rod 11 by changing the shape of each hydraulic cylinder. At the same time, the range of loading and unloading the pipe rod 11 is determined by the length of the bottom plate 102 of the loading and unloading device 1. By designing a suitable length of the bottom plate 102, the loading and unloading of pipe rods 11 of different specifications can be completed.

[0039] In a preferred embodiment, the transport device 2 is mainly composed of a gear 201, a rack 202, an auxiliary track 203, a transport device rear baffle 204 and a transport device front baffle 205. The gear 201 is meshed above the rack 202, and the auxiliary tracks 203 are fixed on both sides of the rack 202. In a preferred embodiment, the front baffle 205 of the transport device is fixed at the front end of the rack 202 and the auxiliary track 203, and the rear baffle 204 of the transport device is fixed at the rear end to prevent the loading and unloading device 1 on the upper part of the transport device 2 from deviating from the designed track and improve the safety of the device. The bottom of the gear cover 108 can be fixed in the sliding track of the auxiliary track 203 to ensure the smoothness of the transportation operation process.

[0040] In a preferred embodiment, the supporting base is mainly composed of a front base 3, a rear base 4, a front base earring 301, a front base connecting pin 302, a catwalk fixing device 303, a rear base keyway 401, and a keyway sliding shaft 402. The front base earring 301 is fixed to the lower end of the transport device 2 on the side of the mechanism close to the catwalk 10. In a preferred embodiment, the front base 3 is connected and fixed to the front base earring 301 by the front base connecting pin 302, and the rear base keyway 401 is fixed to the lower part of the transport device 2 on the side of the mechanism close to the pipe rack 9. The hydraulic rod of the rear base 4 and the keyway sliding shaft 402 can move in the rear base keyway 401.

[0041] The working principle of the present invention is as follows: preparation work before the operation begins; first, place the pipe-up and down device 12 of the well repair operation catwalk between the pipe rack 9 and the catwalk 10, and then fix the front end of the mechanism and the catwalk 10 to a suitable position through the catwalk fixing device 303 of the front base 3. After the front base 3 and the catwalk 10 are fixed, adjust the extension and contraction of the hydraulic rod of the rear base 4 to a suitable position to complete the adaptation of the mechanism rear base 4 and the pipe rack 9. Finally, the adaptation and fixation of the pipe-up and down device 12 of the well repair operation catwalk with the pipe rack 9 and the catwalk 10 are completed. Pipe rod operation process; when the pipe rod is installed, the gear power motor 8 provides power to rotate the gear 201, driving the upper loading and unloading device 1 to move to the fixed position at one end of the pipe rack 9, and the rear hydraulic cylinder 105 extends to control the rear baffle 103 to pick up the pipe rod 11 in the pipe rack 9 into the loading and unloading device 1, completing the loading of the mechanism, and at the same time, the front hydraulic cylinder 107 extends to retract the front baffle 101, and the entire loading and unloading device 1 forms a groove for fixing the pipe rod 11. The gear power motor 8 provides power to the gear 201 to complete the rotation on the rack 202, driving the loading and unloading device 1 to be transported to a fixed position on one side of the catwalk 10. After the transport device 2 is fixed, the front hydraulic cylinder 107 retracts the front baffle 101 and lowers it. At the same time, the bottom plate hydraulic cylinder 106 extends out, so that the front baffle 101, the bottom plate 102 and the rear baffle 103 form a slope, allowing the internal pipe rod 11 of the loading and unloading device 1 to slide into the catwalk 10. After the pipe rod 11 is transported, the bottom plate hydraulic cylinder 106 and the rear hydraulic cylinder 105 retract to return the rear baffle base to its initial state. At the same time, the gear power motor 8 provides power to the gear 201 to complete the rotation on the rack 202, so that the loading and unloading device 1 moves to the starting position and waits for the next operation instruction. The operation process of lowering the pipe rod; when lowering the pipe rod, the gear power motor 8 provides power to rotate the gear 201, driving the upper loading and unloading device 1 to move to a fixed position at one end of the catwalk 10, the rear hydraulic cylinder 105 extends to control the rear baffle 103 to retract a certain angle and then fix it, the front hydraulic cylinder 107 extends to control the rear baffle 103 to retract a certain angle to pick the pipe rod 11 in the catwalk 10 into the loading and unloading device 1, and the loading of the mechanism is completed. The gear power motor 8 provides power for the gear 201 to complete the movement on the rack 202, The loading and unloading device 1 is driven to be transported to a fixed position on one side of the pipe rack 9. After the transport device 2 is fixed, the rear hydraulic cylinder 105 retracts the rear baffle 103 and lowers it. At this time, due to the angle of the mechanism itself, the front baffle 101, the bottom plate 102 and the rear baffle 103 form a slope, and the pipe rod 11 in the loading and unloading device 1 automatically slides into the pipe rack 9. After the pipe rod 11 is transported, the gear power motor 8 provides power to the gear 201 to complete the rotation on the rack 202, so that the loading and unloading device 1 moves to the starting position and waits for the next operation instruction.

[0042] While the invention has been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made thereto without departing from the principles and spirit of the invention, the scope of the invention being defined by the appended claims and their equivalents.

[0043] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0044] Secondly: In the drawings of the invention disclosed in the present invention, only the structures related to the invention disclosed in the present invention are involved, and other structures can refer to the usual design. In the absence of conflict, the same invention and different inventions of the present invention can be combined with each other;

[0045] Finally: The above description is only the preferred invention of the present invention and is not used to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipe loading and unloading device for a well repairing catwalk, the pipe loading and unloading device (12) for the well repairing catwalk being composed of three identical petroleum pipe moving devices connected by a rear base connecting rod (6), the pipe loading and unloading device (12) for the well repairing catwalk being placed between a pipe rack (9) and the catwalk (10), the top of the pipe rack (9) being movably provided with a pipe rod (11), the petroleum pipe moving device comprising a loading and unloading device (1), a transport device (2), a front base (3) and a rear base (4), characterized in that: The interior of the loading and unloading device (1) is fixedly sleeved with a gear power motor (8), and the interior of the gear power motor (8) is movably sleeved with a transmission shaft (7). The loading and unloading devices (1) of the three oil pipe moving devices are fixedly driven by the transmission shaft (7). The loading and unloading device (1) mainly comprises a front baffle (101), a bottom plate (102), a rear baffle (103), a base (104), a rear hydraulic cylinder (105), a bottom plate hydraulic cylinder (106), a front hydraulic cylinder (107) and a gear cover (108). The base (104) is fixed above the gear cover (108), the outside of the gear cover (108) is movably connected to the bottom plate hydraulic cylinder (106), the outside of the bottom plate hydraulic cylinder (106) is movably connected to one side of the bottom plate (102), and the other side of the bottom plate (102) is movably connected to the base (104), and the two ends of the bottom plate (102) are movably connected to the rear baffle (103) and the front baffle (101), respectively. The rear baffle (103) is externally movably connected to the rear hydraulic cylinder (105), and the other end of the rear hydraulic cylinder (105) is fixed to the outside of the gear cover (108). The front baffle (101) is externally movably connected to the front hydraulic cylinder (107), and the other end of the front hydraulic cylinder (107) is movably connected to the gear cover (108). The bottom of the loading and unloading device (1) is movably connected to the transport device (2), and a rack (202) is provided on the top of the transport device (2). The gear cover (108) at the bottom of the loading and unloading device (1) is connected to the gear (201) via a connecting shaft, and the gear (201) is meshed above the rack (202). Auxiliary rails (203) are fixed on both sides of the rack (202). The interior of the auxiliary rails (203) is movably sleeved with the loading and unloading device (1), and the front end of the rack (202) and the auxiliary rails (203) are fixed to the front baffle (205) of the transport device, and the rear end is fixed to the rear baffle (204) of the transport device.

2. A catwalk pipe lowering and lowering device for well repair operations according to claim 1, characterized in that: The bottom of the transport device (2) is fixedly connected to the rear base keyway (401), the rear base keyway (401) is internally movably sleeved with a keyway sliding shaft (402), and the bottom of the keyway sliding shaft (402) is fixedly connected to the rear base (4).

3. A catwalk pipe lowering and lowering device for well repairing operations according to claim 2, characterized in that: The exterior of the rear base (4) is fixedly connected to the front base connecting rod (5), the exterior of the front base connecting rod (5) is fixedly connected to the front base (3), the exterior of the front base (3) is movably connected to the catwalk fixing device (303), and the exterior of the front base (3) is fixedly connected to the rear base connecting rod (6).

4. A catwalk pipe lowering and lowering device for well repair operations according to claim 3, characterized in that: The top of the front base (3) is fixedly connected to the front base earring (301), the interior of the front base earring (301) is movably sleeved with the front base connecting pin (302), and the exterior of the front base earring (301) is fixedly connected to the transport device (2).

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