A fixing device for power tongs of a truck-mounted workover rig

Abstract

The utility model discloses a kind of vehicle-mounted well-repairing machine power tongs fixing devices, including base, rotating support assembly, fixed support assembly, power tongs is fixed in the space below chassis, realize power tongs arrangement and transport with vehicle, need not to prepare separate support or toolbox storage from vehicle, it is convenient to use and shift transport at any time, save operation preparation time and transport space, when needing power tongs, rotate out rotating support assembly outward, take out power tongs, use conveniently and quickly, when not needing, rotate in rotating support assembly to fixed position, rotating support assembly is fixed with fixed support assembly by pin shaft locking, power tongs fixing device and power tongs cannot protrude frame and car platform, do not affect the width of frame and the installation of car platform component, wide application range.

Description

Technical Field

[0001] This utility model relates to the technical field of oilfield vehicle-mounted workover rig equipment. More specifically, this utility model relates to a power clamp fixing device for a vehicle-mounted workover rig. Background Technology

[0002] In oilfield well workover operations, such as connecting single sections and tripping drill bits, the power tongs are frequently used. However, most truck-mounted workover rigs lack a designated location for the power tongs. They are typically placed on a dedicated bracket or in a designated safe storage area, positioned in the wellhead operating area when needed, and returned to their original position after use. Since the power tongs are crucial equipment in well workover operations and are used frequently, this process is cumbersome and time-consuming. To address this issue, some designs have incorporated brackets for storing the power tongs, allowing for transport with the vehicle. However, mounting the power tongs on the bracket exceeds the vehicle's frame space, potentially causing interference and limiting its applicability. Furthermore, it requires separate transport with spare parts, impacting transport efficiency and remaining inconvenient to use. Summary of the Invention

[0003] The purpose of this utility model is to provide a vehicle-mounted power tong fixing device for workover rigs, so as to solve the technical problem that the existing power tongs for workover rigs are inconvenient to transport and use with vehicles.

[0004] To achieve these objectives and other advantages according to this utility model, a vehicle-mounted well workover rig power clamp fixing device is provided, comprising:

[0005] The base is fixed to the rear beam of the chassis frame and has a detachable shaft vertically connected to the side facing the empty space on the vehicle.

[0006] The rotating support assembly has a sleeve at one end, a middle part for placing the power clamp, and a first ear plate at the other end. The sleeve is sleeved on the outside of the rotating shaft and the upper and lower ends are rotatably connected to the rotating shaft through bearings. The first ear plate extends along the rotation tangent of the sleeve and is set on the side away from the placement space.

[0007] The fixed support assembly is fixed to the lower flange of the main longitudinal beam of the chassis frame, including a cross brace extending toward the space above the vehicle, and a second ear plate is horizontally connected to the bottom of the cross brace.

[0008] The second ear plate is located below the first ear plate and has ear holes through it. When the support plate is rotated to the end position in the placement space, the second ear plate can be positioned directly above the first ear plate, and a pin is temporarily fixed through the upper and lower ear holes.

[0009] Preferably, the rotating support assembly further includes a diagonal brace, a crossbeam, and a base plate. The upper end of the diagonal brace is connected to the sleeve, and the lower end is connected to the top surface of the crossbeam. The first ear plate is connected to the side of the crossbeam away from the sleeve. The base plate is fixed to the upper surface of the crossbeam. The power clamp is placed on the base plate, and the two ends of the crossbeam are respectively fixedly connected to the first sealing plate.

[0010] Preferably, a buckle is connected upward to the top surface of the base plate near the diagonal brace, and a disc is connected upward to the top of the crossbeam at the end away from the diagonal brace. The buckle is used to mate with and limit the hole at the front end of the power pliers, and the disc is used to support the rear end of the power pliers. Limiting blocks are also provided at intervals on both sides of the upper surface of the base plate to limit the bottom of the placed power pliers in the front and rear directions of rotation.

[0011] Preferably, a first stiffening plate is connected between the lower end of the diagonal brace and the crossbeam, and a second stiffening plate is connected between the upper end of the diagonal brace and the sleeve.

[0012] Preferably, the diagonal brace is connected to a baffle on the same side as the first ear plate, which is used to abut the end of the chassis frame tail beam when rotating outward, so as to achieve the maximum outward rotation angle.

[0013] Preferably, the base plate is configured such that its width increases in the direction away from the sleeve.

[0014] Preferably, the fixed support assembly further includes a longitudinal brace, which is integrally formed and connected with the transverse brace. The transverse brace has a second sealing plate welded to one end connected to the second ear plate. The bottom of the second sealing plate is welded to the top of the second ear plate. When the crossbeam rotates to abut the second sealing plate, the length direction of the crossbeam is perpendicular to the length direction of the transverse brace, and the two ear holes of the first ear plate and the second ear plate are aligned. A third sealing plate is welded to the top of the longitudinal brace and is welded to the bottom of the lower flange of the main longitudinal beam of the chassis frame through the third sealing plate.

[0015] Preferably, the base includes a fixed panel, an upper limit plate, a lower support plate, and a rotating shaft. The inner side of the fixed panel is fixed to the side of the rear beam of the chassis frame. The upper limit plate is an L-shaped structure facing downward and is bolted to the upper outer side of the fixed panel. The lower support plate is an L-shaped structure facing upward and is bolted to the lower outer side of the fixed panel. The rotating shaft is connected between the upper limit plate and the lower support plate.

[0016] Preferably, on the outer side of the rotating shaft, a pressure cap is connected to the top of the upper bearing, and a support cap is connected to the bottom of the lower bearing. Oil seals are respectively provided between the inner bottom of the pressure cap and the upper bearing, and between the inner top of the support cap and the lower bearing. A gasket is respectively filled between the pressure cap and the top surface of the sleeve, and between the support cap and the bottom surface of the sleeve. Oil holes are opened at the upper and lower ends of the sleeve facing the bearings on the corresponding sides, and oil cups are screwed onto the oil holes.

[0017] This utility model has at least the following beneficial effects: The vehicle-mounted well-servicing rig power tong fixing device of this utility model includes a base, a rotating support assembly, and a fixed support assembly. It fixes the power tong in the space under the chassis, enabling the power tong to be arranged and transported with the vehicle. It eliminates the need for a separate bracket or toolbox for storage outside the vehicle, making it convenient to access and transfer at any time, saving preparation time and transportation space. When the power tong is needed, the rotating support assembly is turned outward to take out the power tong, which is convenient and quick to use. When not needed, the rotating support assembly is turned inward to a fixed position, and the rotating support assembly and the fixed support assembly are locked together by a pin. The power tong fixing device and the power tong will not protrude from the frame and platform, and will not affect the width of the frame or the installation of platform components, making it widely applicable.

[0018] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the vehicle-mounted well-servicing rig power clamp fixing device of this utility model;

[0020] Figure 2 This is a top view of the vehicle-mounted well-servicing rig power clamp fixing device of this utility model.

[0021] Figure 3 This is a schematic diagram of the structure of a rotating support assembly according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of a fixed support assembly according to an embodiment of the present invention;

[0023] Figure 5 This is a perspective view illustrating the working principle of the power clamp fixing device of this utility model.

[0024] Figure 6 A top view showing the working principle of the power clamp fixing device of this utility model;

[0025] Figure 7 This is a cross-sectional view of the rotating shaft according to an embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram of the sleeve structure according to one embodiment of the present invention.

[0027] Instruction manual drawing reference numerals: 1. Base, 2. Fixed panel, 3. Upper limit plate, 4. Lower support plate, 5. Rotary shaft, 6. Sleeve, 7. Diagonal brace, 8. Baffle, 9. Crossbeam, 10. Base plate, 11. Fastener, 12. Disc, 13. First ear plate, 14. First sealing plate, 15. First stiffening plate, 16. Second stiffening plate, 17. Limiting block, 18. Horizontal brace, 19. Longitudinal brace, 20. Second ear plate, 21. Second sealing plate, 22. Third sealing plate, 23. Chassis frame rear beam, 24. Main longitudinal beam lower flange, 25. Bearing, 26. Pressure cap, 27. Support cover, 28. Oil seal, 29. Washer, 30. Oil cup, 31. Pin. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0029] In the description of this utility model, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] like Figure 1-8 As shown, the vehicle-mounted well-servicing rig power clamp fixing device of this utility model includes:

[0031] The base 1 is fixed to the rear beam 23 of the chassis frame and has a detachable shaft 5 vertically connected to the side facing the empty space on the vehicle.

[0032] The rotating support assembly has a sleeve 6 at one end, a power clamp in the middle, and a first ear plate 13 at the other end. The sleeve 6 is sleeved on the outside of the rotating shaft 5 and the upper and lower ends are rotatably connected to the rotating shaft 5 through bearings 25 respectively. The first ear plate 13 extends along the rotation tangent of the sleeve 6 and is set on the side away from the placement space.

[0033] The fixed support assembly is fixed to the lower flange 24 of the main longitudinal beam of the chassis frame, including a cross brace 18 extending toward the placement space on the vehicle, and a second ear plate 20 is horizontally connected to the bottom of the cross brace 18.

[0034] The second ear plate 20 is located below the first ear plate 13 and has ear holes through it. When the support plate is rotated to the end position in the placement space, the second ear plate 20 can be located directly above the first ear plate 13, and a pin 31 is temporarily fixed through the upper and lower ear holes.

[0035] The rotating support assembly is rotated and supported by the connecting base 1. The upper and lower ends of the rotating shaft 5 are fixedly connected to the base 1 by bolts. To ensure the free rotation of the rotating support assembly relative to the base 1, bearings 25 are installed at the upper and lower ends of the shaft. To ensure the lubrication of the bearings 25, lubricating oil is added to the bearings 25. The base 1 is welded to the rear beam 23 of the chassis frame. The end of the fixed support assembly away from the second ear plate 20 is welded to the lower flange 24 of the main longitudinal beam of the chassis frame. The rotating support assembly serves as a support structure for placing the power pliers. An anti-slip limiting structure is set at the bottom. The fixed support assembly is used to lock the position of the power pliers when they are stored in the inner space of the vehicle and to provide partial support at the corresponding end. At the same time, it improves the strength of the support structure when the power pliers are transported with the vehicle. The pin 31 is inserted by aligning the ear holes of the second ear plate 20 and the first ear plate 13 to quickly lock or unlock the pliers. The operation is convenient. Before placing the power pliers, the ear holes of the first ear plate 13 and the second ear plate 20 are drilled in the same vertical direction after alignment.

[0036] Working principle:

[0037] When the power caliper is not needed, the power caliper is placed on the swivel support assembly, which is positioned towards the main longitudinal beam of the chassis (i.e., as shown). Figure 6 Rotate the rotating support assembly (in the direction shown to the right and upward) until it contacts the fixed support assembly. At this time, the ear hole of the second ear plate 20 is aligned with the ear hole of the first ear plate 13 in the vertical direction. Insert the pin 31 into the through hole to fix the rotating support assembly.

[0038] When the power pliers are needed, remove pin 31, rotate the swivel support assembly away from the main longitudinal beam of the chassis (i.e., the opposite of the rotation direction when the power pliers are not needed) to a certain angle, remove the power pliers, and the maximum angle at which the power pliers can rotate is when the swivel support assembly contacts the rear beam 23 of the chassis frame.

[0039] This embodiment provides a new method for fixing the power tongs of a vehicle-mounted well workover rig. Utilizing the vehicle-mounted well workover rig power tong fixing device, the power tongs are fixed in the space under the chassis, allowing for convenient placement and transportation of the power tongs with the vehicle. This eliminates the need for a separate bracket or toolbox for storage outside the vehicle, facilitating easy access and transfer, saving preparation time and transportation space. When the power tongs are needed, the rotating support assembly is rotated outwards to retrieve them, making access quick and easy. When not needed, the rotating support assembly is rotated inwards to a fixed position, and the rotating support assembly and fixed support assembly are locked together using pin 31. The power tong fixing device and the power tongs themselves do not protrude from the frame or platform, and do not affect the width of the frame or the installation of platform components, making it widely applicable.

[0040] In another technical solution, such as Figure 1-3 As shown in Figures 5-6, the rotating support assembly also includes a diagonal brace 7, a crossbeam 9, and a base plate 10. The upper end of the diagonal brace 7 is connected to the sleeve 6, and the lower end is connected to the top surface of the crossbeam 9. The first ear plate 13 is connected to the side of the crossbeam 9 away from the sleeve 6. The base plate 10 is fixed to the upper surface of the crossbeam 9. The power clamp is placed on the base plate 10. The two ends of the crossbeam 9 are respectively fixedly connected to the first sealing plate 14.

[0041] The length direction of the diagonal brace 7 relative to the crossbeam 9 is determined according to the placement space of the power clamp inside the vehicle and the position for easy welding of the fixed base 1, to ensure stable support connection and to set up reinforcing structural components. The crossbeam 9 serves as the main support structure for the bottom of the power clamp. The base plate 10 increases the support area to facilitate the setting of limiting structures on each side of the bottom of the power clamp, preventing it from slipping off or tilting due to the inertia of vehicle operation. The first sealing plate 14 is welded to the end of the crossbeam 9 to reinforce the rigidity of both ends of the crossbeam 9 structure.

[0042] In another technical solution, such as Figure 1-3 As shown in Figures 5-6, a buckle 11 is connected upward to the top surface of the base plate 10 near the end of the diagonal brace 7. A disc 12 is connected upward to the top of the crossbeam 9 at the end away from the diagonal brace 7. For the structure of the power pliers, a hole is also provided on the buckle 11 for docking and limiting the hole at the front end of the power pliers. After it is aligned with the hole of the power pliers, it can be fixed and limited by a pin. The disc 12 is used to support the rear end of the power pliers. Limiting blocks 17 are also provided at intervals on both sides of the upper surface of the base plate 10 for limiting the bottom of the placed power pliers in the front and rear directions of rotation.

[0043] In another technical solution, such as Figure 1-3 As shown in Figures 5-6, a first stiffening plate 15 is connected between the lower end of the diagonal brace 7 and the crossbeam 9, and a second stiffening plate 16 is connected between the upper end of the diagonal brace 7 and the sleeve 6, thereby improving the connection rigidity between the two ends of the diagonal brace 7 and the corresponding sleeve 6 and crossbeam 9.

[0044] In another technical solution, such as Figure 1-3 As shown in Figures 5-6, the diagonal brace 7 is connected to a baffle 8 on the same side as the first ear plate 13, which is used to abut against the end of the chassis frame tail beam 23 when rotating outward, so as to reach the maximum outward rotation angle, that is, the maximum rotation angle of the power caliper is when the baffle 8 of the rotating support assembly contacts the chassis frame tail beam 23.

[0045] In another technical solution, such as Figure 1-3 As shown in Figures 5-6, the base plate 10 is configured to increase in width along the direction away from the sleeve 6, forming a trapezoidal plate structure to better adapt to the shape of the power clamp itself.

[0046] In another technical solution, such as Figure 1 , 2 As shown in Figures 4, 5, and 6, the fixed support assembly also includes a longitudinal brace 19, which is integrally formed and connected with a transverse brace 18. A second sealing plate 21 is welded to one end of the transverse brace 18 that connects to the second ear plate 20. The bottom of the second sealing plate 21 is welded to the top of the second ear plate 20. When the crossbeam 9 rotates to abut against the second sealing plate 21, the length direction of the crossbeam 9 is perpendicular to the length direction of the transverse brace 18, and the two ear holes of the first ear plate 13 and the second ear plate 20 are aligned. A third sealing plate 22 is welded to the top of the longitudinal brace 19 and is welded to the bottom of the lower flange 24 of the main longitudinal beam of the chassis frame through the third sealing plate 22.

[0047] After the longitudinal brace 19 and the transverse brace 18 are connected as a whole, they form an L-shaped structure with the transverse brace 18 extending outward. A second sealing plate 21 is welded to the outer end of the transverse brace 18, i.e. the end in the outward rotation direction. While strengthening the structural strength, the second sealing plate 21 can also serve as a limiting vertical plate structure for abutting the transverse beam 9. When the adjacent ends of the transverse beam 9 abut against the second sealing plate 21, the ear holes of the second ear plate 20 and the first ear plate 13 are aligned. The second sealing plate 21 and the pin 31 can serve as a limiting structure for the transverse beam 9 on opposite sides, improving the stability when the rotating support assembly and the fixed support assembly are in contact and fixed, and making it easier to align the ear holes of the first ear plate 13 and the second ear plate 20.

[0048] In another technical solution, such as Figure 1-3 As shown in Figures 5-6, the base 1 includes a fixed panel 2, an upper limit plate 3, a lower support plate 4, and a rotating shaft 5. The inner side of the fixed panel 2 is fixed to the side of the chassis frame tail beam 23. The upper limit plate 3 is an L-shaped structure that is set downwards and is bolted to the upper outer side of the fixed panel 2. The lower support plate 4 is an L-shaped structure that is set upwards and is bolted to the lower outer side of the fixed panel 2. The rotating shaft 5 is connected between the upper limit plate 3 and the lower support plate 4.

[0049] The fixed panel 2, the upper limit plate 3, and the lower support plate 4 are connected by bolts. The middle of the horizontal section of the upper limit plate 3 and the middle of the horizontal section of the lower support plate 4 are provided with through holes. The lower end of the rotating shaft 5 is inserted into the through hole of the lower support plate 4, and the upper end of the rotating shaft 5 is fixed to the upper limit plate 3 by bolts. The fixed panel 2 is welded to the rear beam 23 of the chassis frame, and the fixed support assembly is welded to the lower flange 24 of the main longitudinal beam of the chassis frame through the third sealing plate 22.

[0050] In another technical solution, such as Figure 1 , 3 As shown in Figure 5-8, on the outer side of the rotating shaft 5, a pressure cap 26 is connected to the top of the upper bearing 25, and a support cap 27 is connected to the bottom of the lower bearing 25. Oil seals 28 are respectively provided between the bottom inner side of the pressure cap 26 and the upper bearing 25, and between the top inner side of the support cap 27 and the lower bearing 25. A washer 29 is respectively filled between the pressure cap 26 and the top surface of the sleeve 6, and between the support cap 27 and the bottom surface of the sleeve 6. Oil holes are opened at the upper and lower ends of the sleeve 6 at the height of the bearing 25 on the corresponding side, and oil cups 30 are screwed on the oil holes.

[0051] To ensure lubrication of bearing 25, an oil passage is provided at bearing 25 of the rotating support assembly sleeve 6, and a round hole is opened at the corresponding position. Lubricating oil / grease is injected through the round hole. To prevent lubricating oil / grease leakage and contamination of the working environment, an oil seal 28 is installed. The oil seal 28 and bearing 25 are limited by the pressure cover 26 and the drag cover. The rotating support assembly is connected to the pressure cover 26, the drag cover, etc. by bolts. When bearing 25 needs lubrication, the oil cup 30 is unscrewed and lubricating oil / grease is injected. The lubricating oil / grease reaches bearing 25 through the oil passage in the gap, completing the lubrication.

[0052] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the drawings shown and described herein.

Claims

1. A vehicle-mounted well-servicing rig power clamp fixing device, characterized in that, include: The base is fixed to the rear beam of the chassis frame and has a detachable shaft vertically connected to the side facing the empty space on the vehicle. The rotating support assembly has a sleeve at one end, a middle part for placing the power clamp, and a first ear plate at the other end. The sleeve is sleeved on the outside of the rotating shaft and the upper and lower ends are rotatably connected to the rotating shaft through bearings. The first ear plate extends along the rotation tangent of the sleeve and is set on the side away from the placement space. The fixed support assembly is fixed to the lower flange of the main longitudinal beam of the chassis frame, including a cross brace extending toward the space above the vehicle, and a second ear plate is horizontally connected to the bottom of the cross brace. The second ear plate is located below the first ear plate and has ear holes through it. When the support plate is rotated to the end position in the placement space, the second ear plate can be positioned directly above the first ear plate, and a pin is temporarily fixed through the upper and lower ear holes.

2. The vehicle-mounted well-servicing rig power clamp fixing device as described in claim 1, characterized in that, The rotating support assembly also includes a diagonal brace, a crossbeam, and a base plate. The upper end of the diagonal brace is connected to the sleeve, and the lower end is connected to the top surface of the crossbeam. The first ear plate is connected to the side of the crossbeam away from the sleeve. The base plate is fixed to the upper surface of the crossbeam. The power clamp is placed on the base plate. The two ends of the crossbeam are respectively fixedly connected to the first sealing plate.

3. The vehicle-mounted well-servicing rig power clamp fixing device as described in claim 2, characterized in that, A buckle is connected upward to the top surface of the base plate near the diagonal brace, and a disc is connected upward to the top of the crossbeam away from the diagonal brace. The buckle is used to mate with and limit the hole at the front end of the power pliers, and the disc is used to support the rear end of the power pliers. Limiting blocks are also provided at intervals on both sides of the upper surface of the base plate to limit the bottom of the placed power pliers in the front and rear directions of rotation.

4. The vehicle-mounted well-servicing rig power clamp fixing device as described in claim 2, characterized in that, The lower end of the diagonal brace is connected to the crossbeam by a first stiffening plate, and the upper end of the diagonal brace is connected to the sleeve by a second stiffening plate.

5. The vehicle-mounted well-servicing rig power clamp fixing device as described in claim 2, characterized in that, The diagonal brace has a baffle connected to it on the same side as the first ear plate, which is used to abut against the end of the chassis frame tail beam when rotating outward, so as to achieve the maximum outward rotation angle.

6. The vehicle-mounted well-servicing rig power clamp fixing device as described in claim 2, characterized in that, The base plate is configured such that its width increases in the direction away from the sleeve.

7. The vehicle-mounted well-servicing rig power clamp fixing device as described in claim 2, characterized in that, The fixed support assembly also includes a longitudinal brace, which is integrally formed and connected with the transverse brace. The transverse brace has a second sealing plate welded to one end connected to the second ear plate. The bottom of the second sealing plate is welded to the top of the second ear plate. When the crossbeam rotates to abut the second sealing plate, the length direction of the crossbeam is perpendicular to the length direction of the transverse brace, and the two ear holes of the first ear plate and the second ear plate are aligned. A third sealing plate is welded to the top of the longitudinal brace and is welded to the bottom of the lower flange of the main longitudinal beam of the chassis frame through the third sealing plate.

8. The vehicle-mounted well-servicing rig power clamp fixing device as described in claim 1, characterized in that, The base includes a fixed panel, an upper limit plate, a lower support plate, and a rotating shaft. The inner side of the fixed panel is fixed to the side of the rear beam of the chassis frame. The upper limit plate is an L-shaped structure facing downward and is bolted to the upper outer side of the fixed panel. The lower support plate is an L-shaped structure facing upward and is bolted to the lower outer side of the fixed panel. The rotating shaft is connected between the upper limit plate and the lower support plate.

9. The vehicle-mounted well-servicing rig power clamp fixing device as described in claim 1, characterized in that, On the outside of the rotating shaft, a pressure cap is connected to the top of the upper bearing, and a support cap is connected to the bottom of the lower bearing. Oil seals are respectively provided between the bottom inner side of the pressure cap and the upper bearing, and between the top inner side of the support cap and the lower bearing. A gasket is respectively filled between the pressure cap and the top surface of the sleeve, and between the support cap and the bottom surface of the sleeve. Oil holes are opened at the upper and lower ends of the sleeve facing the bearings on the corresponding sides, and oil cups are screwed onto the oil holes.

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