A single drum workover rig

Abstract

The present application relates to the technical field of oilfield workover operation equipment, in particular to a single-drum workover rig, which comprises a vehicle body, a moving device and a crown block assembly, the top of the vehicle body is provided with a vehicle frame, the moving device comprises a support seat, the support seat is arranged on the top of the vehicle frame, the crown block assembly is installed on the top of the support seat, the crown block assembly comprises a load-bearing frame, the load-bearing frame is fixedly installed on the top of the support seat, the top of the load-bearing frame is provided with a lower body of a derrick, the lower body of the derrick is provided with two groups, the crown block assembly and the moving device are installed on the vehicle body, and the vehicle body is transported to a designated work station at the same time to achieve rapid deployment, and the height of the upper body of the derrick is adjusted at will by cooperation of the moving seat, the inner cylinder and the outer cylinder, so that the single-drum workover rig is suitable for oil wells of various depths, and the problem that the working length of the existing single-drum workover rig cannot be adjusted and rapid deployment cannot be achieved is solved.

Description

Technical Field

[0001] This invention relates to the field of oilfield well workover equipment technology, specifically to a single-drum well workover machine. Background Technology

[0002] Well workover rigs are drilling and production equipment specifically designed for the oil industry and are the most basic and primary power source for well workover and downhole operations.

[0003] Existing single-drum workover rigs have the following drawbacks:

[0004] 1. Oil wells can be classified into shallow wells, medium-deep wells, deep wells and ultra-deep wells according to their depth. The extension frame of the existing single-drum workover rig is usually connected by a winch rope. When it is working, the winch rope needs to be pulled to the end to extend the extension frame. Therefore, the working length of the extension frame is not adjustable. As a result, the range of oil wells that the existing single-drum workover rig can work on is relatively small.

[0005] 2. Before working, the existing single-drum workover rig requires the chassis to be pulled out of the truck body and installed on the ground. At the same time, the position of the chassis needs to be adjusted before installation. Due to the large weight of the chassis, it cannot be deployed quickly.

[0006] Therefore, it is necessary to invent a single-drum well workover machine. Summary of the Invention

[0007] To address this, the present invention provides a single-drum workover rig, which installs the overhead crane assembly and the moving device onto the vehicle body and transports the vehicle body to a designated work position for rapid deployment. Furthermore, by utilizing the coordination of the moving seat, inner cylinder, and outer cylinder, the height of the upper body of the derrick can be adjusted arbitrarily, making it suitable for oil wells of various depths. This solves the problem that the working length of the extension frame of existing single-drum workover rigs is not adjustable and cannot be deployed quickly.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a single-drum workover rig, comprising a vehicle body, a moving device, and a crane assembly, wherein a frame is provided on the top of the vehicle body, the moving device includes a support seat, the support seat is provided on the top of the frame, and the crane assembly is installed on the top of the support seat;

[0009] The overhead crane assembly includes a load-bearing frame, which is fixedly installed on the top of the support base. The top of the load-bearing frame is provided with a lower derrick body, which has two sets. A base plate is fixedly installed on the right side of the lower derrick body, and a tripod is fixedly installed on the right side of the base plate. The right end of the tripod is movably connected to the top of the load-bearing frame. An upper derrick body is provided on the inner wall of the lower derrick body. A single-cylinder mechanism is installed on the left end of the upper derrick body, and a drive assembly is provided on the inner wall of the upper derrick body.

[0010] The drive assembly includes an outer cylinder, the right end of which is fixedly connected to a tripod. Limiting holes one are evenly provided on the top of the outer cylinder. An inner cylinder is movably installed on the inner wall of the outer cylinder. The left end of the inner cylinder is fixedly connected to the left end of the derrick upper body. Strip grooves are provided on both sides of the inner cylinder. A limiting plate is provided on the left end of the inner wall of the inner cylinder. The limiting plate is inserted into the inner wall of the strip groove on both sides and fixedly connected to the inner wall of the outer cylinder. The limiting plate is slidably connected to the strip groove. Limiting holes three are provided on both sides of the right end of the inner cylinder. Limiting holes two are provided on the top of the right end of the inner cylinder. A top column is sequentially inserted into the inner wall of a set of limiting holes one and limiting holes two.

[0011] A movable seat is movably installed on the inner wall of the inner cylinder. Cylinders are fixedly installed on both sides of the movable seat. The output ends of the two sets of cylinders are inserted into the inner wall of the limiting hole three. A screw is provided on the inner wall of the inner cylinder. The left end of the screw is movably connected to the limiting plate. The inner wall of the movable seat is threadedly connected to the screw. A limiting box is fixedly installed on the top of the movable seat. A left wedge is installed on the left side of the inner wall of the limiting box. The left wedge is slidably connected to the bottom of the limiting box. A screw is provided on the inner wall of the limiting box. The inner wall of the left wedge is threadedly connected to the screw. Both ends of the screw are movably connected to the inner wall of the limiting box. A right wedge is installed on the right side of the inner wall of the limiting box. The right side of the right wedge is slidably connected to the inner wall of the limiting box. The left wedge and the right wedge are slidably connected. A convex angle plate is fixedly installed on the top of the right wedge. A claw-shaped plate is fixedly installed on the top of the convex angle plate. The claw-shaped plate is used in conjunction with the top column.

[0012] Preferably, a second motor is fixedly installed on one side of the limiting box, the output end of the second motor is fixedly connected to the second screw, limiting posts are fixedly installed at the four corners of the convex corner plate, and sliding holes are opened on both sides of the cylinder, with the limiting posts inserted into the inner wall of the sliding holes and slidably connected to the cylinder.

[0013] Preferably, side slide plates are fixedly installed on both sides of the movable seat, and bottom slide plates are fixedly installed at the bottom of the movable seat. The outer walls of the side slide plates and bottom slide plates are slidably connected to the inner wall of the inner cylinder. Wear-resistant plates are evenly installed on the outer wall of the inner cylinder, and the outer walls of the wear-resistant plates are slidably connected to the inner wall of the outer cylinder.

[0014] Preferably, the overhead crane assembly includes a locking mechanism, which is fixedly installed on the top right side of the support base. A support column one is fixedly installed on the right side of the tripod. A support column two is detachably installed between the support column one and the tripod. The support column one is detachably connected to the locking mechanism. A motor one is fixedly installed between the right side of the base plate and the tripod. The left output end of the motor one is fixedly connected to the right end of the screw one.

[0015] Preferably, an outer frame is fixedly installed on the outer wall of the lower part of the derrick, and a hydraulic rod II is installed on the top left side of the support base, with the top output end of the hydraulic rod II connected to the bottom of the outer frame.

[0016] Preferably, sliding strips are fixedly installed on both sides of the inner wall of the lower body of the derrick, and sliding grooves are opened on both sides of the upper body of the derrick. The lower body of the derrick is slidably connected to the upper body of the derrick by sliding strips inserted into the inner wall of the sliding grooves.

[0017] Preferably, the single-cylinder mechanism includes a top plate, which is provided in two sets. The two sets of top plates are respectively fixedly connected to the left end of the upper body of the derrick, and a pulley group is fixedly installed between the two sets of top plates.

[0018] Preferably, a support frame is fixedly installed on the top of the frame, a hydraulic rod is installed on the left side of the top of the support frame, the right output end of the hydraulic rod is connected to the left side of the support base, cross arms are fixedly installed at the four corners of the support base, hydraulic outriggers are fixedly installed at the bottom of the cross arms, auxiliary slide rails are fixedly installed on both sides of the top of the support frame, a slide groove is opened at the bottom of the cross arm, and the support frame is slidably connected to the cross arm by inserting the auxiliary slide rails into the inner wall of the slide groove.

[0019] Preferably, a rope release groove is provided on the top left side of the support base, and a tube release groove is provided on the top right side of the support base. A winch is fixedly installed on the top of the inner wall of the frame, and a rope release frame is fixedly installed on the right side of the winch. Rope take-up shafts are evenly installed on the inner wall of the rope release frame. The winch, rope take-up shafts and rope release groove are used in conjunction with the rope release groove, and the tube release groove is used in conjunction with the single-tube mechanism.

[0020] The beneficial effects of this invention are:

[0021] 1. Drive motor one according to the required lifting height, so that its output shaft drives screw one to rotate, forcing the moving seat to mesh with screw one. At the same time, drive two sets of cylinders to make their output shafts engage in limit hole three, fixing the moving seat and the inner cylinder. When the moving seat moves, it can drive the inner cylinder to move synchronously. When it moves to the specified height, that is, limit hole two coincides with limit hole one at that height, at this time, drive motor two to make its output shaft drive screw two, so that the left wedge block slides in the limit box, thereby squeezing the right wedge block and making it slide in screw two, forcing the convex plate to drive the claw plate to move up, so that the top column engaged with the claw plate engages in the corresponding limit hole one, thus fixing the outer cylinder and the inner cylinder. At this time, the inner cylinder can push the upper body of the derrick to the rated height. At this time, release the winch rope in the winch, and the well workover equipment can be put into the oil well.

[0022] 2. Park the vehicle body at the designated work position. Drive hydraulic rod one to push the support seat to slide on the auxiliary slide rail. When the support seat moves to the end, the pipe slot and the pipe hole coincide. At the same time, drive four sets of hydraulic outriggers to fix them on the ground, thereby supporting the support seat and the overhead crane assembly. After the support is completed, drive two sets of hydraulic rod two to lift the lower body of the derrick. When the lower body of the derrick is fully erected, the bottom end of support column one coincides with the locking mechanism. At this time, support column one can be fixed to the locking mechanism with bolts. Then, the workover equipment can be installed on the pulley block, and the rope winding shaft can be driven to lift the workover equipment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the well workover machine provided by the present invention;

[0024] Figure 2 A transportation status diagram of the well workover rig provided by the present invention;

[0025] Figure 3 This is a diagram illustrating the working state of the well workover rig provided by the present invention.

[0026] Figure 4 An installation location diagram of the mobile device provided by the present invention;

[0027] Figure 5 This is a diagram showing the installation location of the overhead crane assembly provided by the present invention.

[0028] Figure 6 An exploded view of the overhead crane assembly provided by this invention;

[0029] Figure 7 A plan view of the overhead crane assembly in its upright state provided by the present invention;

[0030] Figure 8 A plan view of the overhead crane assembly in its transportation state provided by the present invention;

[0031] Figure 9 This is a split view of the lower body and upper body of the derrick provided by the present invention;

[0032] Figure 10 This is a schematic diagram of the structure of the upper body of the derrick provided by the present invention;

[0033] Figure 11 Plan view of the lower body and upper body of the derrick provided by the present invention;

[0034] Figure 12 The structure of the single-tube mechanism provided by the present invention is shown in the schematic diagram;

[0035] Figure 13 A diagram showing the installation position of the slide bar provided by the present invention;

[0036] Figure 14 This is a schematic diagram of the structure of the driving component provided by the present invention;

[0037] Figure 15 A split view of the driving component provided by the present invention;

[0038] Figure 16 Internal structure diagram of the inner cylinder provided by the present invention;

[0039] Figure 17 This is a schematic diagram of the structure of the inner cylinder end provided by the present invention;

[0040] Figure 18 A split view of the interior of the inner cylinder provided for this invention;

[0041] Figure 19 A plan view of the interior of the inner cylinder provided for this invention;

[0042] Figure 20 This is a schematic diagram of the structure of the movable base provided by the present invention;

[0043] Figure 21 An exploded view of the movable base provided by the present invention;

[0044] Figure 22 A diagram showing the installation position of the convex corner plate provided by this invention;

[0045] Figure 23 This is a diagram showing the internal structure of the limiting box provided by the present invention.

[0046] Figure 24 An installation position diagram of the bottom sliding plate provided by the present invention;

[0047] Figure 25 This is a diagram showing the installation position of the claw-shaped plate provided by the present invention.

[0048] In the diagram: Car body 100, frame 110, winch 120, rope release frame 130, rope take-up shaft 140, support frame 150, auxiliary slide rail 160, hydraulic rod one 170, moving device 200, support base 210, cross arm 220, hydraulic outrigger 230, slide groove one 240, rope release groove 250, pipe release groove 260, overhead crane assembly 300, locking mechanism 310, load-bearing frame 320, hydraulic rod two 330, derrick lower body 340, base plate 341, tripod 342, support column one 343, support column two 344, motor one 345, outer frame 346, slide bar 347, derrick upper body 350, Slide 2; 351, Single cylinder mechanism; 360, Top plate; 361, Pulley block; 362, Drive assembly; 370, Outer cylinder; 371, Limiting hole 1; 372, Inner cylinder; 373, Strip groove; 374, Wear-resistant plate; 375, Limiting plate; 376, Screw 1; 377, Limiting hole 2; 378, Limiting hole 3; 379, Moving seat; 380, Cylinder; 381, Slide hole; 382, ​​Side slide plate; 383, Bottom slide plate; 384, Limiting box; 385, Motor 2; 386, Left wedge block; 387, Right wedge block; 388, Screw 2; 389, Convex angle plate; 390, Limiting post; 391, Claw plate; 392, Top post; 393. Detailed Implementation

[0049] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0050] See attached document Figure 1-25 The present invention provides a single-drum workover rig, including a vehicle body 100, a moving device 200 and a crane assembly 300. The vehicle body 100 is provided with a frame 110 on the top. The moving device 200 includes a support seat 210, which is disposed on the top of the frame 110 and provides support for the support seat 210. The crane assembly 300 is installed on the top of the support seat 210.

[0051] The overhead crane assembly 300 includes a load-bearing frame 320, which is fixedly installed on the top of a support base 210. The support base 210 provides support for the load-bearing frame 320. A lower derrick body 340 is provided on the top of the load-bearing frame 320. The lower derrick body 340 has two sets. A base plate 341 is fixedly installed on the right side of the lower derrick body 340. A tripod 342 is fixedly installed on the right side of the base plate 341. The right end of the tripod 342 is movably connected to the top of the load-bearing frame 320. The tripod 342 rotates on the top of the load-bearing frame 320, thereby driving the lower derrick body 340 to rotate. A derrick upper body 350 is provided on the inner wall of the lower derrick body 340. A single-cylinder mechanism 360 is installed on the left end of the upper derrick body 350. A drive assembly 370 is provided on the inner wall of the upper derrick body 350.

[0052] The drive assembly 370 includes an outer cylinder 371, the right end of which is fixedly connected to a tripod 342, which provides support for the outer cylinder 371. Limiting holes 372 are evenly distributed on the top of the outer cylinder 371. An inner cylinder 373 is movably installed on the inner wall of the outer cylinder 371, the left end of which is fixedly connected to the left end of the derrick upper body 350, providing support for the movement of the derrick upper body 350. Strip grooves 374 are provided on both sides of the inner cylinder 373, and a limiting plate 376 is provided on the left end of the inner wall of the inner cylinder 373. Limiting plates 376 are located on both sides of the limiting plate 376. Inserted into the inner wall of the strip groove 374 and fixedly connected to the inner wall of the outer cylinder 371, when the limiting plate 376 slides in the strip groove 374, it can force the inner cylinder 373 to push the upper body 350 of the derrick to the top. The limiting plate 376 is slidably connected to the strip groove 374. Limiting holes 379 are opened on both sides of the right end of the inner cylinder 373, and limiting holes 278 are opened at the top of the right end of the inner cylinder 373. A set of limiting holes 1 372 and limiting holes 2 378 are sequentially inserted into the inner walls of the inner walls. Limiting holes 2 378 and multiple sets of limiting holes 1 372 cooperate with each other.

[0053] A movable seat 380 is movably installed on the inner wall of the inner cylinder 373. Cylinders 381 are fixedly installed on both sides of the movable seat 380. The output ends of the two sets of cylinders 381 are inserted into the inner wall of the limiting hole 379. When the two sets of cylinders 381 are driven, their output shafts can be inserted into the limiting hole 379, thereby fixing the movable seat 380 to the inner cylinder 373. A screw 377 is provided on the inner wall of the inner cylinder 373. The left end of the screw 377 is movably connected to the limiting plate 376, which provides a limit for the screw 377. The inner wall of the movable seat 380 is threadedly connected to the screw 377. A limiting box 385 is fixedly installed on the top of the movable seat 380. A left wedge 387 is installed on the left side of the inner wall of the limiting box 385. The left wedge 387 is slidably connected to the bottom of the limiting box 385. The bottom of the limiting box 385 has a groove, allowing the left wedge 387 to slide within the groove. A second screw 389 is located on the inner wall of the limiting box 385. The inner wall of the left wedge 387 is threadedly connected to the second screw 389. Both ends of the second screw 389 are movably connected to the inner wall of the limiting box 385. A right wedge 388 is installed on the right side of the inner wall of the limiting box 385, and its right side is slidably connected to the inner wall of the limiting box 385. The left wedge 387 and right wedge 388 are slidably connected, with their inclined surfaces engaging. A protruding angle plate 390 is fixedly installed on the top of the right wedge 388, and a claw-shaped plate 392 is fixedly installed on the top of the protruding angle plate 390. 2. Used in conjunction with the top column 393, the top column 393 has a cylindrical bottom with a wedge opening that engages with the top column 393. When the right wedge block 388 moves upward, it drives the claw plate 392 to move, thereby pushing the top column 393 out and engaging it into the limiting hole 372. Specifically, according to the required lifting height, the drive motor 345 drives the screw 377 to rotate, forcing the moving seat 380 to engage with the screw 377. At the same time, it drives two sets of cylinders 381 to engage their output shafts into the limiting hole 379, fixing the moving seat 380 and the inner cylinder 373. When the moving seat 380 moves, it drives the inner cylinder 373 to move synchronously. When it moves to the specified height... At a certain height, that is, when the second limiting hole 378 coincides with the first limiting hole 372 at that height, the output shaft of the second drive motor 386 drives the second screw 389 to move, so that the left wedge 387 slides in the limiting box 385, thereby squeezing the right wedge 388 and making it slide in the second screw 389. This forces the convex plate 390 to move the claw plate 392 upward, so that the top column 393, which engages with the claw plate 392, is engaged in the corresponding first limiting hole 372, thus fixing the outer cylinder 371 and the inner cylinder 373. At this time, the inner cylinder 373 can push the upper body 350 of the derrick to the rated height. Then, the winch rope in the winch 120 is released, and the well workover equipment can be put into the seabed.

[0054] Furthermore, a second motor 386 is fixedly installed on one side of the limit box 385. The output end of the second motor 386 is fixedly connected to the second screw 389. Limit posts 391 are fixedly installed at the four corners of the convex corner plate 390. The convex corner plate 390 slides on the limit posts 391. Sliding holes 382 are opened on both sides of the cylinder 381. The limit posts 391 are inserted into the inner wall of the sliding holes 382 and slidably connected to the cylinder 381.

[0055] Furthermore, side slide plates 383 are fixedly installed on both sides of the movable seat 380, and bottom slide plates 384 are fixedly installed at the bottom of the movable seat 380. The outer walls of the side slide plates 383 and bottom slide plates 384 are slidably connected to the inner wall of the inner cylinder 373. The side slide plates 383 and bottom slide plates 384 provide support and limit for the movement of the movable seat 380. Wear-resistant plates 375 are evenly installed on the outer wall of the inner cylinder 373. The outer wall of the wear-resistant plates 375 is slidably connected to the inner wall of the outer cylinder 371. The wear-resistant plates 375 provide protection for the inner cylinder 373.

[0056] Furthermore, the overhead crane assembly 300 includes a locking mechanism 310, which is fixedly installed on the top right side of the support base 210. A support column 343 is fixedly installed on the right side of the tripod 342. A support column 344 is detachably installed between the support column 343 and the tripod 342. The support column 344 can support the support column 343 to form the most stable triangular structure. The support column 343 is detachably connected to the locking mechanism 310. When the overhead crane assembly 300 needs to work, that is, when the lower body 340 of the derrick needs to be erected, the support column 343 can be screwed to the locking mechanism 310 so that the support column 343 supports the lower body 340 of the derrick. A motor 345 is fixedly installed between the right side of the base plate 341 and the tripod 342. The left output end of the motor 345 is fixedly connected to the right end of the screw 377.

[0057] Furthermore, an outer frame 346 is fixedly installed on the outer wall of the lower body 340 of the derrick, and a hydraulic rod 330 is installed on the top left side of the support base 210. The top output end of the hydraulic rod 330 is connected to the bottom of the outer frame 346, and the bottom of the hydraulic rod 330 is connected to the support base 210. It can rotate around the connection point. Similarly, its top output end is connected to the outer frame 346 and can also rotate around the connection point. When the hydraulic rod 330 is working, it can lift the lower body 340 of the derrick.

[0058] Furthermore, slide bars 347 are fixedly installed on both sides of the inner wall of the lower body 340 of the derrick, and slide grooves 351 are opened on both sides of the upper body 350 of the derrick. The lower body 340 of the derrick is slidably connected to the upper body 350 of the derrick by inserting the slide bars 347 into the inner wall of the slide grooves 351.

[0059] Furthermore, the single-cylinder mechanism 360 includes a top plate 361, which is provided in two sets. The two sets of top plates 361 are respectively fixedly connected to the left end of the upper body 350 of the derrick. The upper body 350 of the derrick provides support for the top plate 361. A pulley group 362 is fixedly installed between the two sets of top plates 361.

[0060] Furthermore, a support frame 150 is fixedly installed on the top of the frame 110. A hydraulic rod 170 is installed on the top left side of the support frame 150. The bottom of the hydraulic rod 170 is connected to the support frame 150 and can rotate around the connection point. The right output end of the hydraulic rod 170 is connected to the left side of the support base 210. Similarly, the right output end of the hydraulic rod 170 can rotate around the connection point. A cross arm 220 is fixedly installed at the four corners of the support base 210. A hydraulic outrigger 230 is fixedly installed at the bottom of the cross arm 220. The hydraulic outrigger 230 can provide support for the overhead crane assembly 300. Auxiliary slide rails 160 are fixedly installed on both sides of the top of the support frame 150. A slide groove 240 is opened at the bottom of the cross arm 220. The support frame 150 is slidably connected to the cross arm 220 by inserting the auxiliary slide rails 160 into the inner wall of the slide groove 240.

[0061] Furthermore, a rope release groove 250 is provided on the top left side of the support base 210, and a tube release groove 260 is provided on the top right side of the support base 210. A winch 120 is fixedly installed on the top of the inner wall of the frame 110, and a rope release frame 130 is fixedly installed on the right side of the winch 120. Rope take-up shafts 140 are evenly installed on the inner wall of the rope release frame 130. The winch 120, the rope take-up shaft 140 and the rope release groove 250 are used in conjunction. A rope is wound on the winch 120. The rope passes through the rope release groove 250 and is wound around the pulley block 362. Then, it is wound around the take-up rope shaft 140 through the pulley block 362. The tube release groove 260 is used in conjunction with the single-tube mechanism 360.

[0062] The process of using this invention is as follows: Those skilled in the art can place the vehicle body 100 at the designated work station and drive the hydraulic rod 170 to push the support seat 210 to slide on the auxiliary slide rail 160. When the support seat 210 moves to the end, the pipe slot 260 coincides with the pipe hole, and at the same time, drive the four sets of hydraulic outriggers 230 to fix them on the ground, thereby supporting the support seat 210 and the overhead crane assembly 300.

[0063] After the support is completed, the two sets of hydraulic rods 330 are driven to lift the lower body 340 of the derrick. When the lower body 340 of the derrick is fully erected, the bottom end of the support column 343 coincides with the locking mechanism 310. At this time, the support column 343 can be fixed to the locking mechanism 310 with bolts. At this time, the workover equipment can be installed on the pulley block 362, and the rope winding shaft 140 is driven to lift the workover equipment.

[0064] According to the required lifting height, the drive motor 345 drives the screw 377 to rotate, forcing the movable seat 380 to engage with the screw 377. Simultaneously, it drives two sets of cylinders 381 to engage their output shafts into the limiting holes 379, fixing the movable seat 380 to the inner cylinder 373. When the movable seat 380 moves, it drives the inner cylinder 373 to move synchronously. When it reaches the designated height, i.e., when the limiting hole 378 coincides with the limiting hole 372 at that height, the drive motor 386 drives its output shaft to... The second screw 389 moves, causing the left wedge 387 to slide within the limit box 385, thereby squeezing the right wedge 388 and causing it to slide within the second screw 389. This forces the convex plate 390 to move the claw plate 392 upward, causing the top column 393, which engages with the claw plate 392, to engage with the corresponding limit hole 372. This fixes the outer cylinder 371 and the inner cylinder 373. At this time, the inner cylinder 373 can push the upper body 350 of the derrick to the rated height. Then, the winch rope in the winch 120 is released, and the workover equipment can be placed into the oil well.

[0065] The above description is merely a preferred embodiment of the present invention. Any person skilled in the art can modify the present invention or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A single-drum workover rig, comprising a vehicle body (100), a moving device (200), and a crane assembly (300), characterized in that: The vehicle body (100) is provided with a frame (110) on top, the mobile device (200) includes a support base (210), the support base (210) is provided on top of the frame (110), and the overhead crane assembly (300) is installed on top of the support base (210); The overhead crane assembly (300) includes a load-bearing frame (320), which is fixedly installed on the top of the support base (210). The top of the load-bearing frame (320) is provided with a lower body (340), which is provided with two sets. A base plate (341) is fixedly installed on the right side of the lower body (340), and a tripod (342) is fixedly installed on the right side of the base plate (341). The right end of the tripod (342) is movably connected to the top of the load-bearing frame (320). An upper body (350) is provided on the inner wall of the lower body (340). A single-cylinder mechanism (360) is installed on the left end of the upper body (350), and a drive assembly (370) is provided on the inner wall of the upper body (350). The drive assembly (370) includes an outer cylinder (371), the right end of which is fixedly connected to a tripod (342). Limiting holes (372) are evenly distributed on the top of the outer cylinder (371). An inner cylinder (373) is movably installed on the inner wall of the outer cylinder (371). The left end of the inner cylinder (373) is fixedly connected to the left end of the upper body (350) of the derrick. Strip grooves (374) are provided on both sides of the inner cylinder (373). A limiting hole is provided on the left end of the inner wall of the inner cylinder (373). Position plate (376), the two sides of the positioning plate (376) are inserted into the inner wall of the strip groove (374) and fixedly connected to the inner wall of the outer cylinder (371). The positioning plate (376) is slidably connected to the strip groove (374). The right end of the inner cylinder (373) has three positioning holes (379) on both sides and two positioning holes (378) on the top of the right end of the inner cylinder (373). A set of top columns (393) are inserted into the inner walls of the first positioning hole (372) and the second positioning hole (378) in sequence. A movable seat (380) is movably installed on the inner wall of the inner cylinder (373). Cylinders (381) are fixedly installed on both sides of the movable seat (380). The output ends of the two sets of cylinders (381) are inserted into the inner wall of the limiting hole three (379). A screw rod one (377) is provided on the inner wall of the inner cylinder (373). The left end of the screw rod one (377) is movably connected to the limiting plate (376). The inner wall of the movable seat (380) is threadedly connected to the screw rod one (377). A limiting box (385) is fixedly installed on the top of the movable seat (380). A left wedge block (387) is installed on the left side of the inner wall of the limiting box (385). The left wedge block (387) is slidably connected to the bottom of the limiting box (385). The inner wall of the limiting box (385) is provided with a screw rod (389). The inner wall of the left wedge block (387) is threadedly connected to the screw rod (389). The two ends of the screw rod (389) are movably connected to the inner wall of the limiting box (385). A right wedge block (388) is installed on the right side of the inner wall of the limiting box (385). The right side of the right wedge block (388) is slidably connected to the inner wall of the limiting box (385). The left wedge block (387) and the right wedge block (388) are slidably connected. A convex angle plate (390) is fixedly installed on the top of the right wedge block (388). A claw plate (392) is fixedly installed on the top of the convex angle plate (390). The claw plate (392) is used in conjunction with the top column (393).

2. The single-drum workover rig according to claim 1, characterized in that: A second motor (386) is fixedly installed on one side of the limiting box (385). The output end of the second motor (386) is fixedly connected to the second screw (389). Limiting posts (391) are fixedly installed at the four corners of the convex corner plate (390). Sliding holes (382) are opened on both sides of the cylinder (381). The limiting posts (391) are inserted into the inner wall of the sliding holes (382) and slidably connected to the cylinder (381).

3. A single-drum workover rig according to claim 1, characterized in that: Side slide plates (383) are fixedly installed on both sides of the movable seat (380), and bottom slide plates (384) are fixedly installed at the bottom of the movable seat (380). The outer walls of the side slide plates (383) and bottom slide plates (384) are slidably connected to the inner wall of the inner cylinder (373). Wear-resistant plates (375) are evenly installed on the outer wall of the inner cylinder (373), and the outer wall of the wear-resistant plates (375) is slidably connected to the inner wall of the outer cylinder (371).

4. A single-drum workover rig according to claim 1, characterized in that: The overhead crane assembly (300) includes a locking mechanism (310), which is fixedly installed on the top right side of the support base (210). A support column one (343) is fixedly installed on the right side of the tripod (342). A support column two (344) is detachably installed between the support column one (343) and the tripod (342). The support column one (343) is detachably connected to the locking mechanism (310). A motor one (345) is fixedly installed between the right side of the base plate (341) and the tripod (342). The left output end of the motor one (345) is fixedly connected to the right end of the screw one (377).

5. A single-drum workover rig according to claim 1, characterized in that: An outer frame (346) is fixedly installed on the outer wall of the lower body (340) of the derrick. A hydraulic rod (330) is installed on the top left side of the support base (210). The top output end of the hydraulic rod (330) is connected to the bottom of the outer frame (346).

6. A single-drum workover rig according to claim 1, characterized in that: Sliding strips (347) are fixedly installed on both sides of the inner wall of the lower body (340) of the derrick, and sliding grooves (351) are opened on both sides of the upper body (350) of the derrick. The lower body (340) of the derrick is slidably connected to the upper body (350) of the derrick by inserting the sliding strips (347) into the inner wall of the sliding grooves (351).

7. A single-drum workover rig according to claim 1, characterized in that: The single-cylinder mechanism (360) includes a top plate (361), which is provided in two sets. The two sets of top plates (361) are respectively fixedly connected to the left end of the upper body (350) of the derrick, and a pulley group (362) is fixedly installed between the two sets of top plates (361).

8. A single-drum workover rig according to claim 1, characterized in that: A support frame (150) is fixedly installed on the top of the frame (110). A hydraulic rod (170) is installed on the left side of the top of the support frame (150). The right output end of the hydraulic rod (170) is connected to the left side of the support seat (210). A cross arm (220) is fixedly installed at the four corners of the support seat (210). A hydraulic outrigger (230) is fixedly installed at the bottom of the cross arm (220). An auxiliary slide rail (160) is fixedly installed on both sides of the top of the support frame (150). A slide groove (240) is opened at the bottom of the cross arm (220). The support frame (150) is slidably connected to the cross arm (220) by inserting the auxiliary slide rail (160) into the inner wall of the slide groove (240).

9. A single-drum workover rig according to claim 1, characterized in that: The support base (210) has a rope release groove (250) on the top left side and a tube release groove (260) on the top right side. A winch (120) is fixedly installed on the top of the inner wall of the frame (110). A rope release frame (130) is fixedly installed on the right side of the winch (120). Rope take-up shafts (140) are evenly installed on the inner wall of the rope release frame (130). The winch (120), the rope take-up shaft (140) and the rope release groove (250) are used together. The tube release groove (260) is used together with the single tube mechanism (360).

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