Rail clamp locking type drilling rig sliding device

Abstract

The track clamping and locking type drilling rig sliding device disclosed by the application comprises a sliding hydraulic cylinder and a clamping and locking device, one end of the sliding hydraulic cylinder is connected with a base, the other end is connected with the clamping and locking device through a connecting lug plate, the clamping and locking device is connected with a sliding track through a bottom guide plate, and locking and drilling rig sliding of the device are realized through a hydraulic system. The application utilizes the wedge force increasing principle, realizes locking and releasing of the device and the track through horizontal expansion and contraction of the wedge double-acting telescopic cylinder, and does not need to process a pawl hole on a wing plate of the track, so that the machining cost and production cycle of the track are greatly reduced. In the locking state, the sliding hydraulic cylinder can be elongated or shortened, continuous sliding and accurate adjustment of a wellhead are realized.

Description

Technical Field

[0001] This invention belongs to the field of petroleum machinery and equipment technology, specifically relating to a track-clamping locking type drilling rig sliding device. Background Technology

[0002] For onshore cluster well operations, almost all drilling rigs are equipped with rail-mounted sliding devices to improve the efficiency of moving the rig between wellheads. The rail length is generally between 30-40 meters. For offshore fixed-platform modular drilling rigs, which are all cluster well operations, deck-level rails and mid-level rails are used. The longitudinal and lateral sliding of the modular drilling rig is achieved through a sliding device. The deck-level rail length generally ranges from 60-120 meters, and the mid-level rail length ranges from 20-30 meters. Conventional rail-mounted sliding devices require a matching sliding device to achieve the translation of the drilling rig. Currently, the matching sliding devices are all ratchet-type sliding devices, such as... Figure 1 As shown, the main components include a pawl holder, pawls, pawl shaft, clamps, and a reversing wrench. The working process is as follows: the pawl holder is pushed or pulled by a hydraulic cylinder until the pawl, under its own weight, engages with the pawl hole in the sliding track, locking the sliding device. Then, by pulling or pushing in the opposite direction with the sliding cylinder, the drilling rig moves in a step-like sliding motion. The length of each step is the spacing between the pawl holes. Its disadvantages are: pawl holes need to be machined on the upper flange surface of the track along its entire working length, resulting in a large machining volume, long manufacturing cycle, and high cost of the sliding track; the sliding method is step-like, with the sliding distance on each side equal to the pawl spacing; each sliding motion can only be in one direction, requiring manual reversing of the pawl to switch sliding directions; therefore, operation is cumbersome when precise wellhead adjustment is required. To address this, a novel clamping-type sliding device was designed that eliminates the need to machine pawl holes on the track. When the sliding device is locked, it can be pushed or pulled as needed without manual operation, achieving rapid and precise wellhead positioning. Summary of the Invention

[0003] The purpose of this invention is to provide a track-clamping locking type drilling rig sliding device, which solves the problem that existing ratchet-type sliding devices require ratchet holes to be machined on the flange surface of the sliding track along the entire working length of the track, resulting in a large amount of machining and high costs.

[0004] The technical solution adopted in this invention is: a track clamping and locking type drilling rig sliding device, including a sliding hydraulic cylinder and a clamping and locking device. One end of the sliding hydraulic cylinder is connected to the base, and the other end is connected to the clamping and locking device through a connecting ear plate. The clamping and locking device is connected to the sliding track through a bottom guide plate. The locking of the device and the sliding of the drilling rig are realized through a hydraulic system.

[0005] The invention is further characterized in that,

[0006] Furthermore, the clamping and locking device includes a double-piston rod bidirectional hydraulic cylinder disposed within the housing. The piston cylinders on both sides of the double-piston rod bidirectional hydraulic cylinder are respectively connected to the wedge-shaped slider via threads, and the wedge-shaped slider is mounted on the wedge-shaped base. A guide block is provided in the middle of the double-piston rod bidirectional hydraulic cylinder, and the guide block is installed in the guide groove on the wedge-shaped base to form the wedge-shaped slider assembly.

[0007] Furthermore, the connecting ear plate is fixedly connected to the housing.

[0008] Furthermore, an upper wing plate and two side plates are fixed inside the housing; the side plates are fixedly connected to the bottom guide plate, and the upper wing plate, the two side plates and the bottom guide plate are welded together to form a U-shape; the upper wing plate has an elongated hole in the center for connecting the hydraulic lines of the double piston rod bidirectional hydraulic cylinder; the bottom of the two bottom guide plates has threaded holes and convex steps on both sides to ensure that the clamping and locking device slides in a straight line along the sliding track direction, and the bottom of the bottom guide plate is connected to the clamping block by fixing bolts.

[0009] Furthermore, reinforcing ribs are welded between the side plates and the shell, and bottom baffles are connected to the ends of the two side plates respectively, with the bottom of the bottom baffles not higher than the bottom of the side plates.

[0010] Furthermore, the wedge-shaped base includes a wedge-shaped base plate and a guide groove. The middle of the wedge-shaped base plate is a flat surface, and wedge-shaped inclined surfaces are provided on both sides. The angle of the inclined surfaces is the same as the angle of the inclined surfaces of the wedge-shaped slider.

[0011] Furthermore, the guide groove opening faces upward, and the guide groove is welded to the middle position of the wedge-shaped base plate; this ensures that the guide groove can fix the guide plate of the double piston rod bidirectional hydraulic cylinder into the guide groove.

[0012] Furthermore, the upper surface of the clamping block is provided with a recessed platform; the bottom guide plate is fitted into the recessed platform and fixedly connected by fixing bolts; the recessed platform steps on both sides of the clamping block cooperate with the convex steps of the bottom guide plate to achieve the positioning function;

[0013] Furthermore, a pressure strip is fixed to the inward side of the clamping block, and the pressure strip is fixed to the inner side of the clamping block by countersunk screws.

[0014] Furthermore, the pressure strip is forged from hard alloy steel, with embossed patterns on the upper part and a through hole in the middle. Countersunk screws pass through the through hole to fix the pressure strip to the inside of the clamping block.

[0015] Furthermore, the double-piston rod bidirectional hydraulic cylinder has guide blocks on both sides in the middle, which are installed in conjunction with the guide grooves of the wedge-shaped base; the double-piston rod bidirectional hydraulic cylinder has oil ports on both sides set on the middle valve body, and the pipeline is connected through the elongated hole on the upper wing plate of the housing; the piston rods on both sides of the double-piston rod bidirectional hydraulic cylinder are threaded and are connected in conjunction with the threaded holes on the wedge-shaped slider.

[0016] Furthermore, the upper and lower surfaces of the wedge-shaped slider are respectively provided with multiple lubricating oil holes, which are connected to the transverse oil groove to achieve sufficient lubrication of the sliding inclined surface and the upper sliding plane; the inner side of the wedge-shaped slider is connected to the piston rod of the double piston rod bidirectional hydraulic cylinder.

[0017] Among them, the lubricating oil hole is a longitudinal hole from the surface to the inside, which is connected with the transverse oil groove to form an oil passage.

[0018] The beneficial effects of this invention are:

[0019] The present invention relates to a track clamping and locking drilling rig sliding device. The device is characterized by utilizing the wedge-shaped force amplification principle, and achieving locking and releasing between the device and the track through the horizontal extension and retraction of the wedge-shaped double-acting telescopic cylinder. There is no need to process pawl holes on the upper flange of the track, thereby significantly reducing the processing cost and production cycle of the track. In the locked state, the sliding hydraulic cylinder can extend or shorten to achieve continuous sliding and precise adjustment of the wellhead.

[0020] This device eliminates the need for ratchet holes in the upper flange of the sliding track, significantly reducing track processing costs and manufacturing cycle. The invention is easy to operate; no manual intervention is required during sliding, allowing for push or pull switching at any position on the track. It enables rapid and precise wellhead positioning and is simple to install and maintain. For upgrading existing sliding devices in oilfields, regardless of whether they have ratchet holes, only the width of the compatible guide rail needs to be changed for installation and use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a conventional ratchet sliding device;

[0022] Figure 2 This is a schematic diagram of the sliding device structure of the present invention;

[0023] Figure 3 This is a schematic diagram showing the connection between the hydraulic cylinder and the clamping and locking device of the present invention;

[0024] Figure 4 yes Figure 2 AA view;

[0025] Figure 5 yes Figure 3 CC view;

[0026] Figure 6 This is a schematic diagram of the shell structure of the present invention;

[0027] Figure 7 This is a top view of the shell structure of the present invention;

[0028] Figure 8 yes Figure 6 The P-direction view;

[0029] Figure 9 yes Figure 6 F-direction view;

[0030] Figure 10 This is a schematic diagram of the wedge-shaped locking mechanism of the present invention;

[0031] Figure 11 This is a schematic diagram of the wedge-shaped base plate and the guide groove.

[0032] Figure 12 This is a schematic diagram of the wedge-shaped base structure of the present invention;

[0033] Figure 13 This is a schematic diagram of the clamping block structure of the present invention;

[0034] Figure 14 This is a schematic diagram of the pressure strip structure of the present invention.

[0035] In the diagram: 1. Sliding hydraulic cylinder, 2. Housing, 3. Wedge base, 4. Wedge slider, 5. Double piston rod bidirectional hydraulic cylinder, 6. Clamping block, 7. Fixing bolt, 8. Pressure strip, 9. Countersunk screw, 10. Pin, 11. Connecting lug, 12. Upper wing plate, 13. Side plate, 14. Bottom baffle, 15. Reinforcing rib plate, 16. Bottom guide plate, 17. Oil groove, 18. Wedge base plate, 19. Guide groove. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0037] Example 1

[0038] This invention provides a track-clamping locking type drilling rig sliding device, such as... Figure 2-3 As shown, it includes a sliding hydraulic cylinder 1 and a clamping and locking device. One end of the sliding hydraulic cylinder 1 is connected to the base, and the other end is connected to the clamping and locking device through a connecting ear plate 11. The clamping and locking device is connected to the sliding track through a bottom guide plate 16. The locking of the device and the sliding of the drilling rig are realized through the hydraulic system, forming a complete sliding system. The connecting ear plate 11 is fixedly connected to the housing 2 of the clamping and locking device.

[0039] like Figure 5 As shown, the clamping and locking device includes a double-piston rod bidirectional hydraulic cylinder 5 disposed in the housing 2. The piston cylinders on both sides of the double-piston rod bidirectional hydraulic cylinder 5 are respectively connected to the wedge-shaped slider 4 by threads. The wedge-shaped slider 4 is mounted on the wedge-shaped base 3. A guide block is provided in the middle of the double-piston rod bidirectional hydraulic cylinder 5. The guide block is installed in the guide groove 19 on the wedge-shaped base 3 to form a wedge-shaped slider assembly.

[0040] like Figure 7-8 As shown, the housing 2 includes an upper wing plate 12 and two side plates 13; the side plates 13 are fixedly connected to the bottom guide plate 16, and the upper wing plate 12, the two side plates 13 and the bottom guide plate 16 are welded together to form a U-shape; the upper wing plate 12 has an elongated hole in the center for connecting the hydraulic lines of the double piston rod bidirectional hydraulic cylinder 5; the bottom of the two bottom guide plates 16 has threaded holes and convex steps on both sides to ensure that the clamping and locking device slides linearly along the sliding track direction, and the bottom of the bottom guide plate 16 is connected to the clamping block 6 by fixing bolts 7.

[0041] like Figure 9 As shown, a reinforcing rib plate 15 is welded between the side plate 13 and the housing 2; a bottom baffle plate 14 is connected to the ends of the two side plates 13 respectively, and the bottom of the bottom baffle plate 14 is not higher than the bottom of the side plate 13; to ensure that the bottom baffle plate 14 can contact the surface of the sliding guide rail.

[0042] like Figure 11-12 As shown, the wedge-shaped base 3 includes a wedge-shaped base plate 18 and a guide groove 19. The wedge-shaped base plate 18 has a flat surface in the middle and wedge-shaped inclined surfaces on both sides. The angle of the inclined surfaces is the same as the angle of the inclined surfaces of the wedge-shaped slider 4. By using a small-angle inclined surface and lever principle, the horizontal thrust of the double piston rod bidirectional hydraulic cylinder 5 can be converted into a vertical locking force by a factor of two.

[0043] The guide groove 19 faces upward and is welded to the middle of the wedge-shaped base plate 18. This ensures that the guide groove can fix the guide plate of the double piston rod bidirectional hydraulic cylinder 5 into the guide groove. This ensures the synchronization of the piston rods on both sides. At the same time, as the height of the double piston rod bidirectional hydraulic cylinder 5 changes due to the movement of the wedge-shaped slider, the hydraulic cylinder can slide up and down along the wedge-shaped base.

[0044] like Figure 4 , Figure 6 and Figure 13 As shown, the upper surface of the clamping block 6 is provided with a recessed platform; the bottom guide plate 16 is fitted into the recessed platform and fixedly connected by fixing bolts 7; the recessed platform steps on both sides of the clamping block 6 cooperate with the convex steps of the bottom guide plate 16 to achieve the positioning function; the steps are used to limit the sliding direction of the clamping block and can withstand part of the thrust or pull of the oil cylinder during sliding.

[0045] A pressure strip 8 is also fixed to the inward side of the clamping block 6, and the pressure strip 8 is fixed to the inner side of the clamping block 6 by countersunk screws 9.

[0046] like Figure 14 As shown, the pressure strip 8 is forged from hard alloy steel, with a raised and recessed pattern on the upper part and a through hole in the middle. The countersunk screw 9 passes through the through hole to fix the pressure strip 8 to the inside of the clamping block 6.

[0047] The double piston rod bidirectional hydraulic cylinder 5 has guide blocks on both sides in the middle, which are installed in conjunction with the guide grooves 19 of the wedge-shaped base 3; the double piston rod bidirectional hydraulic cylinder 5 has oil ports on both sides set on the middle valve body, and the pipeline is connected through the elongated hole on the upper wing plate 12 of the housing; the piston rods on both sides of the double piston rod bidirectional hydraulic cylinder 5 are threaded and are connected in conjunction with the threaded holes on the wedge-shaped slider 4.

[0048] Example 2.

[0049] Based on Example 1,

[0050] The reinforcing ribs 15 are welded to both sides of the shell 2 to reinforce the shell at the position of maximum load.

[0051] The wedge-shaped base plate 18 is characterized by its size being slightly smaller than the longitudinal interface size of the housing 2, ensuring that it can be installed inside the housing. It has wedge-shaped inclined surfaces on both sides with an angle q that is the same as the inclined surface angle q of the wedge-shaped slider 4, and a flat surface in the middle.

[0052] The guide groove 19 is made of steel plate and consists of two parts. The groove opening faces upward and is welded to both sides of the middle position of the wedge-shaped base plate. It ensures that the left and right guide grooves can fix the guide plate of the double piston rod bidirectional hydraulic cylinder 5 into the groove and can move freely up and down. The height of the guide groove ensures that the cylinder can still play a guiding and positioning role when it is at the extreme high position, so as to realize the function of limiting the cylinder in the left and right directions and guiding it in the height direction.

[0053] Example 3

[0054] Based on Example 1,

[0055] Reference Figure 8 The pressure bar structure, as shown in the figure, is forged from hard alloy steel and tempered to a certain hardness to increase wear resistance and durability. The upper part has raised and recessed patterns to increase the roughness between the pressure bar and the sliding track surface, thus increasing friction. A through hole is provided in the middle for fixing it to the inside of the clamping block with countersunk screws 9.

[0056] The double-piston rod bidirectional hydraulic cylinder 5 has guide blocks on both sides in the middle, which cooperate with the guide grooves of the wedge block base to position and guide the hydraulic cylinder, preventing insufficient locking force caused by asynchronous piston rods on both sides of the cylinder. It can also move freely up and down along the guide rail as the height of the wedge block is adjusted. The hydraulic cylinder has oil ports on both sides located on the middle valve body, and the pipelines are connected through elongated holes on the upper wing plate 12 of the housing. The piston rods on both sides of the hydraulic cylinder 5 are threaded and connect to the threaded holes of the wedge block slider.

[0057] The upper and lower surfaces of the wedge-shaped slider 4 are provided with multiple lubricating oil holes, which are connected to the transverse oil groove 17, see... Figure 10The HH view allows for adequate lubrication of the sliding ramp and the upper sliding plane, reducing frictional resistance. A threaded hole is provided on the inner side of the wedge-shaped slider 4, which connects to the piston rod of the double-piston rod bidirectional hydraulic cylinder 5.

[0058] The wedge-shaped slider 4 slides along the inclined surface of the wedge-shaped base under the action of the double piston rod bidirectional hydraulic cylinder 5. Since the inclined surface angle q of the two is the same, the upper part of the wedge-shaped slider can be ensured to be horizontal, thus ensuring planar contact with the lower plane of the upper wing plate 12 of the housing, ensuring the smoothness of load transmission.

[0059] The dual piston rods can switch the oil inlet in both directions through the hydraulic control system, enabling the synchronous extension or retraction of the piston rods on both sides of the hydraulic cylinder.

[0060] Example 4

[0061] The installation process of the device of the present invention is as follows:

[0062] First, place the wedge base 3 on the sliding guide rail, and simultaneously connect the wedge sliders 4 at both ends of the double piston rod bidirectional hydraulic cylinder 5. Install the guide block in the middle of the double piston rod bidirectional hydraulic cylinder 5 into the guide groove of the wedge base. Then install the housing 2, placing the wedge base assembly inside it, ensuring that the bottom baffle 14 of the housing contacts the upper flange surface of the sliding guide rail. Install the two pressure strips 8 inside the clamping block 6 using countersunk screws 9, and simultaneously fix the clamping block containing the pressure strips 8 to the lower part of the bottom guide plate 16 of the housing using fixing bolts 7. Connect one end of the sliding hydraulic cylinder 1 to the connecting ear plate 11 using a pin 10, and connect the other end of the sliding hydraulic cylinder 1 to the ear plate on the oil drilling rig base. Finally, complete the connection of the hydraulic cylinder pipelines to complete the installation of a sliding device.

[0063] Example 5

[0064] The unlocking and loosening process of the device of the present invention is as follows:

[0065] like Figure 10As shown, after the installation of the sliding device is completed, the hydraulic system is first operated to control the extension of the double-piston rod bidirectional hydraulic cylinder 5 and push the wedge slider 4 to slide outward. The spacing of the wedge sliders increases from dimension B1 to B2. The single-sided wedge slider moves upward along the inclined plane, and the horizontal distance is b = 0.5 * B2 - B2. According to the trigonometric function relationship, the vertical distance is h = tan(q) × b. The distance from the top of the wedge slider to the upper surface of the sliding track increases from H1 to H2 = H1 + h. The wedge slider rises by sliding, and drives the clamping and locking device to rise to a height h by lifting the upper wing plate 12 of the housing. Since the effective gap s between the pressure bar and the sliding track is less than the height h, the housing drives the pressure bar to continue to rise until the gap s shrinks to 0, until the device and the sliding track are firmly locked. According to the principle of torque increase of the wedge inclined plane, a clamping load much greater than the thrust of the oil cylinder is obtained. According to the calculation, by controlling the hydraulic pressure of the hydraulic cylinder 5, the frictional load generated by locking is greater than the frictional force when the base slides. Similarly, as long as the hydraulic system is controlled to operate the hydraulic cylinder to retract to its original position, the housing with clamping block 6 will move down under its own weight and return to the gap s, thus unlocking the sliding device and the track, and allowing it to slide freely along the length of the track.

[0066] Example 6

[0067] The sliding process of the drilling rig:

[0068] First, test the hydraulic system to ensure that the sliding hydraulic cylinder and the double piston cylinder can achieve the predetermined extension and retraction actions. Then, operate the hydraulic system to control the extension of the double piston rod bidirectional hydraulic cylinder 5 until the rated hydraulic pressure is reached and maintained to ensure that sufficient friction is generated to maintain the clamping and locking. Operate the extension or retraction of the sliding hydraulic cylinder 1 to achieve the sliding of the drilling rig. After the cylinder reaches its limit stroke, operate the piston rod of the double piston rod bidirectional hydraulic cylinder 5 to retract, releasing the clamping and locking device. Then operate the retraction or extension of the sliding hydraulic cylinder 1 again to prepare for the next sliding step, completing one sliding of the base. Repeat the above operation to achieve continuous sliding of the base.

[0069] It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit the invention. All other embodiments obtained by those skilled in the art based on the described embodiments are within the scope of protection of this invention.

Claims

1. A track-clamping locking type drilling rig sliding device, characterized in that, It includes a sliding hydraulic cylinder (1) and a clamping and locking device. One end of the sliding hydraulic cylinder (1) is connected to the base, and the other end is connected to the clamping and locking device through a connecting ear plate (11). The clamping and locking device is connected to the sliding track through a bottom guide plate (16). The device is locked and the drilling rig is slidable through a hydraulic system.

2. The track-clamping locking type drilling rig sliding device according to claim 1, characterized in that, The clamping and locking device includes a double piston rod bidirectional hydraulic cylinder (5) disposed in the housing (2). The piston cylinders on both sides of the double piston rod bidirectional hydraulic cylinder (5) are respectively connected to the wedge slider (4) by threads. The wedge slider (4) is mounted on the wedge base (3). A guide block is provided in the middle of the double piston rod bidirectional hydraulic cylinder (5). The guide block is installed in the guide groove (19) on the wedge base (3) to form a wedge slider assembly.

3. The track-clamping locking type drilling rig sliding device according to claim 2, characterized in that, The housing (2) is fixed with an upper wing plate (12) and two side plates (13); the lower part of the side plate (13) is fixedly connected to the bottom guide plate (16), and the upper wing plate (12), the two side plates (13) and the bottom guide plate (16) are welded together in a U-shape; the upper wing plate (12) has an elongated hole in the center for connecting the hydraulic lines of the double piston rod bidirectional hydraulic cylinder (5); the bottom of the two bottom guide plates (16) has threaded holes and convex steps on both sides, and the bottom guide plates (16) are slidably connected to the sliding rail to ensure that the clamping and locking device slides in a straight line along the sliding rail direction.

4. The track-clamping locking type drilling rig sliding device according to claim 1, characterized in that, A reinforcing rib plate (15) is welded between the side plate (13) and the shell (2); the ends of the two side plates (13) are respectively connected to bottom baffles (14), and the bottom of the bottom baffles (14) is not higher than the bottom of the side plates (13).

5. The track-clamping locking type drilling rig sliding device according to claim 2, characterized in that, The wedge-shaped base (3) includes a wedge-shaped base plate (18) and a guide groove (19). The wedge-shaped base plate (18) has a flat surface in the middle and wedge-shaped inclined surfaces on both sides. The angle of the inclined surfaces is the same as the angle of the inclined surfaces of the wedge-shaped slider (4). The guide groove (19) faces upward and is welded to the middle position of the wedge-shaped base plate (18); ensuring that the guide groove can fix the guide plate of the double piston rod bidirectional hydraulic cylinder (5) into the guide groove.

6. The track-clamping locking type drilling rig sliding device according to claim 3, characterized in that, The bottom guide plate (16) is connected to the clamping block (6) by fixing bolts (7) at the bottom. The upper surface of the clamping block (6) is provided with a recessed platform. The bottom guide plate (16) is fitted into the recessed platform and fixedly connected by fixing bolts (7). The recessed platform steps on both sides of the clamping block (6) cooperate with the convex steps of the bottom guide plate (16) to achieve the positioning function. A pressure strip (8) is also fixed to the inward side of the clamping block (6), and the pressure strip (8) is fixed to the inner side of the clamping block (6) by countersunk screws (9).

7. The track-clamping locking type drilling rig sliding device according to claim 2, characterized in that, The pressure strip (8) is forged from hard alloy steel, with a raised and recessed pattern on the upper part and a through hole in the middle. The countersunk screw (9) passes through the through hole to fix the pressure strip (8) inside the clamping block (6).

8. The track-clamping locking type drilling rig sliding device according to claim 5, characterized in that, The double piston rod bidirectional hydraulic cylinder (5) has guide blocks on both sides in the middle, which are installed in conjunction with the guide groove (19) of the wedge base (3); the double piston rod bidirectional hydraulic cylinder (5) has oil ports on both sides set on the middle valve body, and the pipeline is connected through the elongated hole on the upper wing plate (12) of the housing; the piston rods on both sides of the double piston rod bidirectional hydraulic cylinder (5) are threaded and are connected in conjunction with the threaded holes on the wedge slider (4).

9. The track-clamping locking type drilling rig sliding device according to claim 5, characterized in that, The upper and lower surfaces of the wedge-shaped slider (4) are respectively provided with multiple lubricating oil holes, which are connected to the transverse oil groove (17) to achieve sufficient lubrication of the sliding inclined surface and the upper sliding plane; the inner side of the wedge-shaped slider (4) is connected to the piston rod of the double piston rod bidirectional hydraulic cylinder (5).

10. The track-clamping locking type drilling rig sliding device according to claim 5, characterized in that, The connecting ear plate (11) is fixedly connected to the housing (2).

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