Bidirectional telescopic supporting leg

Abstract

The utility model provides a two-way telescopic supporting leg, and belongs to the technical field of well repair auxiliary equipment. The two-way telescopic supporting leg comprises telescopic rods at the upper end and the lower end and an adjusting rod connecting the two telescopic rods, the telescopic rods and the adjusting rod are matched through threads, the telescopic rod at the upper end is provided with a platform connecting end, the telescopic rod at the lower end is connected with a supporting foot disc, one of the supporting foot disc and the telescopic rods is provided with a ball head, and the ball head is connected with a platform connecting end. A ball socket matched with the ball head to form a universal joint is arranged on the other one, a ball head baffle ring is arranged at an opening of the ball socket, the ball head baffle ring is provided with an elastic piece for pressing the ball head baffle ring to the ball socket, and the ball head baffle ring is provided with a pressing position for pressing and locking the ball head and the ball socket and a releasing position in floating fit with the ball head. In use, the height of the workover operation platform can be adjusted by rotating the adjusting rod to enable the telescopic rod to stretch out at the same time, and compared with the prior art, operation is convenient, and manpower is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of well repair auxiliary equipment, in particular to a bidirectional telescopic support leg. Background Art

[0002] When performing well repair operations in oil fields, it is first necessary to build an operating platform above the wellhead for the placement and removal of well repair tools. Generally, the well repair operation platform includes an operating platform, which is located above the blowout preventer. A ladder is provided on one side of the operating platform. One end of the ladder is connected to the operating platform, and the other end is placed on the ground. Support legs are installed at the four corners of the operating platform to support the operating platform. Since there are large differences in the height of the wellhead blowout preventer, the height of the well repair platform also needs to be flexibly adjusted according to the height of the blowout preventer. Usually, in order to adapt to the height of different wellhead blowout preventers, the height of the support legs needs to be adjusted according to the height of the wellhead blowout preventer when installing the well repair operation platform.

[0003] A Chinese utility model patent with authorization announcement number CN209444315U and authorization announcement date September 27, 2019 discloses an integrated well repair work platform, which has a support assembly and an operating platform. The operating platform is located above the wellhead, and the support assembly includes a support pipe located at the four corners of the operating platform. Support legs are inserted into the support pipe, and a plurality of first sockets are provided at different heights on the circumference of the support pipe, and second sockets matching the first sockets are provided on the circumference of the support leg. During installation, the first socket at the appropriate position on the support pipe is aligned with the second socket on the support leg according to the height of the blowout preventer, and fixed by a latch. When the height of the operating platform needs to be adjusted, unplug the latch, adjust the operating platform to the appropriate height, and then fix the support pipe and the support leg with the latch again.

[0004] When the above-mentioned operating platform is adjusted according to the height of the wellhead blowout preventer, it is necessary to unplug the pin to adjust the overall height of the operating platform, and then insert the pin into the first hole and the second hole at the appropriate position of the support pipe and the support leg to fix it. When adjusting the height of the operating platform, it is necessary to first remove or jack up the operating platform to adjust the overall height of the well repair operation platform. The operation is cumbersome and the labor intensity is high. It is impossible to adjust the height of the operating platform without disassembling or jacking up the operating platform. Utility Model Content

[0005] The utility model aims to provide a bidirectional telescopic outrigger to solve the problem in the prior art that the height of the well repair work platform cannot be adjusted without disassembling or jacking up the operation platform.

[0006] In order to achieve the above purpose, the utility model provides a bidirectional telescopic support leg adopting the following technical solutions:

[0007] A two-way telescopic leg comprises telescopic rods at upper and lower ends and an adjusting rod connecting the two telescopic rods, the telescopic rod and the adjusting rod are both matched by threads, a platform connecting end is provided on the telescopic rod at the upper end, and a supporting foot plate is connected to the telescopic rod at the lower end, a ball head is provided on one of the supporting foot plate and the telescopic rod, and a ball socket that cooperates with the ball head to form a universal joint is provided on the other, a ball head retaining ring is provided at the opening of the ball socket, the ball head retaining ring is configured with an elastic member that presses it toward the ball socket, and the ball head retaining ring has a pressing position for pressing and locking the ball head and the ball socket and a releasing position for floating cooperation with the ball head.

[0008] Beneficial effect: The bidirectional support leg of the utility model is a pioneering invention. Through the threaded cooperation of the telescopic rod and the adjusting rod, the telescopic rod that cooperates with the thread of the adjusting rod will extend or retract when the adjusting rod is rotated, wherein the platform connecting end of the upper telescopic rod is connected to the platform, and the supporting foot plate connected to the lower telescopic rod is in contact with the ground to form support for the platform. A ball head is provided on the supporting foot plate and the telescopic rod, and a ball socket that cooperates with the ball head is provided on the other. The ball head is pressed into the ball socket by a ball head retaining ring provided at the opening of the ball socket and an elastic member arranged on the ball head retaining ring. During the installation process, if the ground is uneven, the ball head retaining ring is in the release position. At this time, the ball head retaining ring and the ball head are in floating cooperation, and the telescopic rod can automatically adjust its own inclination angle and direction according to the inclination of the ground; when the platform height needs to be adjusted during the support process, the ball head retaining ring presses the ball head tightly in the ball socket to ensure that when the adjusting rod is rotated, the telescopic rod will not rotate with the adjusting rod and extend smoothly to achieve the adjustment of the platform height. Compared with the prior art, the bidirectional telescopic legs of the utility model can adjust the platform height only by rotating the adjustment rod. Before adjusting the platform height, there is no need to lift the operating platform as a whole, which is easy to operate and saves manpower.

[0009] Furthermore, the ball head retaining ring is a compression ring, and the compression ring is installed at the opening of the ball socket through a threaded fastener.

[0010] Furthermore, the ball head retaining ring is a split structure and is radially assembled to the corresponding telescopic rod.

[0011] Furthermore, the ball socket is formed on the boss after a boss is arranged on the component where the ball socket is located, and a reinforcing rib is arranged between the outer periphery of the boss and the component where the ball socket is located.

[0012] Furthermore, there are multiple reinforcing ribs, which are evenly distributed around the central axis of the boss.

[0013] Furthermore, the telescopic rod is an externally threaded rod, and the adjusting rod is a hollow rod with internal threads.

[0014] Furthermore, the externally threaded rods are respectively provided with locking nuts for tightly fitting with corresponding ends of the hollow rods to lock the corresponding externally threaded rods.

[0015] Furthermore, a handle for rotating the locking nut is provided on the circumference of the locking nut.

[0016] Furthermore, the adjusting rod is provided with a socket for installing the wrench force applying rod or is fixedly provided with the wrench force applying rod.

[0017] Furthermore, the elastic member is a spring washer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the bidirectional telescopic supporting leg of the utility model;

[0019] Figure 2 for Figure 1 The structural diagram of the left-hand screw in FIG.

[0020] Figure 3 for Figure 1 A schematic diagram of the structure of a left-hand locking nut;

[0021] Figure 4 for Figure 1 A schematic diagram of the structure of the adjusting rod;

[0022] Figure 5 for Figure 1 Schematic diagram of the structure of the right-hand screw;

[0023] Figure 6 for Figure 1 A schematic diagram of the structure of a right-hand locking nut;

[0024] Figure 7 for Figure 1 A schematic diagram of the structure of the pressure ring in FIG.

[0025] Figure 8 for Figure 1 Schematic diagram of the positional relationship between the support foot, reinforcement ribs, boss and ball socket.

[0026] In the figure: 1. left-hand screw; 2. left-hand locking nut; 201. handle; 3. adjustment rod; 301. socket; 4. right-hand locking nut; 5. pressure ring; 6. right-hand screw; 601. ball head; 7. screw; 8. support foot; 801. reinforcement rib; 802. boss; 803. ball socket; 9. spring washer. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] The present invention is further described in detail below in conjunction with the embodiments.

[0029] Oil fields often need to use a workover platform when performing workover operations. The workover platform is installed above the wellhead. However, due to the large differences in the heights of blowout preventers at different wellheads, it is necessary to select support legs of appropriate height or adjust the height of the support legs when installing the workover platform to ensure that the workover platform is at an appropriate height.

[0030] The prior art discloses a technical solution for adjusting the height of the well repair work platform by putting a support tube on the support leg and opening a plurality of plug holes at different heights on the support leg and the support tube, and adjusting the height of the support tube by means of a latch. However, when adjusting the height of the well repair work platform, the operating platform needs to be lifted as a whole before the support leg height can be adjusted, and then fixed after adjustment, which is cumbersome and labor-intensive.

[0031] The idea of ​​the utility model is: in order to simplify the operation process and reduce the intensity of manual labor, it is best not to lift the operating platform as a whole before adjusting the height of the legs. Under this idea, the bidirectional telescopic legs of the utility model are provided with an adjustment rod, and telescopic rods are respectively connected to the two ends of the adjustment rod by threads, and the telescopic rod at the lower end is connected to the support foot plate, and a platform connection end connected to the platform is provided at the upper end to support the platform, and the telescopic rod is extended by rotating the adjustment rod to adjust the height of the platform. Considering that the load on the operating platform is large during actual use, when the adjustment rod is rotated, the telescopic rod will rotate together with the adjustment rod, resulting in the telescopic rod being unable to be smoothly extended. A ball head is provided on one of the support foot plate and the telescopic rod, and a ball socket is provided on the other to form a universal joint with the ball head, and a ball head retaining ring with a pressing position and a release position is provided at the opening of the ball socket, and the ball head retaining ring is provided with an elastic member that presses it toward the ball socket. When the platform height needs to be adjusted during the support process, the ball head retaining ring is pressed down to make the ball head pressed against the ball head. At this time, the ball head retaining ring is in the pressing position to prevent the telescopic rod from rotating with the adjusting rod and being unable to extend when the adjusting rod is turned. During installation, the ball head retaining ring is in the release position, and the ball head retaining ring and the ball head are in floating fit. If the ground is uneven, the two-way telescopic legs can be adjusted according to the height and inclination of the ground.

[0032] exist Figure 1 , Figure 2 and Figure 5 In the illustrated embodiment, the telescopic rod is an externally threaded rod, and locking nuts are respectively installed on the externally threaded rod. The locking nuts are tightened, and the locking nuts are pressed against the corresponding ends of the adjusting rod to achieve locking between the externally threaded rod and the hollow rod, so as to avoid that the adjusting rod 3 rotates under the action of external force after the platform height adjustment is completed, thereby affecting the platform height and causing safety accidents during the operation. In other embodiments, the telescopic rods at the upper and lower ends may also be hollow rods with internal threads, and the adjusting rod 3 may be a hollow rod or a solid rod with external threads. Specifically, the telescopic rod at the upper end is a left-handed screw rod 1, and the telescopic rod at the lower end is a right-handed screw rod 6. A left-handed locking nut 2 is provided at the connection between the left-handed screw rod 1 and the adjusting rod 3, and a right-handed locking nut 4 is provided at the connection between the right-handed screw rod 6 and the adjusting rod 3. The inner holes of the left-handed locking nut 2 and the right-handed locking nut 4 are respectively provided with a left-handed trapezoidal thread and a second right-handed trapezoidal thread. The locking nuts are used to fix the positions of the left-handed screw rod 1 and the right-handed screw rod 6 after the well repair work platform is adjusted to a suitable height, so as to prevent the left-handed screw rod 1 and the right-handed screw rod 6 from extending or retracting into the adjusting rod 3 under the action of external force, causing the height of the well repair work platform to change, affecting the safety of personnel and equipment, and improving the stability and reliability of the entire leg.

[0033] Specifically, a plurality of handles 201 are evenly distributed on the sides of the left-hand locking nut 2 and the right-hand locking nut 4. The handles 201 are used to more conveniently turn the locking nut when the locking nut needs to be adjusted. Figure 1 and Figure 3 In the illustrated embodiment, there are three handles 201 which are evenly distributed around the locking nut. In other embodiments, the number of handles 201 may be 0, 1, 4 or other numbers.

[0034] like Figure 1 and Figure 4 As shown, the adjusting rod 3 is provided with a radial socket 301 between the lower end of the left-hand screw 1 and the upper end of the right-hand screw 6. When it is necessary to adjust the height of the well repair work platform, the force rod is passed through the socket 301, and the force rod is rotated. The force rod rotates to drive the adjusting rod 3 to rotate, and the left-hand screw 1 and the right-hand screw 6 are extended or retracted in the adjusting rod 3 while the adjusting rod 3 rotates. The socket 301 is provided to facilitate the use of the force rod to rotate the adjusting rod 3, making it more convenient to adjust the height of the outrigger. In other embodiments, the socket 301 for the force rod to pass through may not be provided on the adjusting rod 3, and the adjusting rod 3 may be directly rotated when adjusting the height of the outrigger, or the force rod may be directly provided on the adjusting rod 3.

[0035] The ball socket 803 is formed on the boss 802 after the boss 802 is set on the component where it is located, and a reinforcing rib 801 is set between the outer periphery of the boss 802 and the component where it is located. When the ball head 601 is set on the upper telescopic rod, the ball socket 803 is set on the boss 802 at the bottom of the platform. When the ball head 601 is set on the lower telescopic rod, the ball socket 803 is set on the boss 802 supporting the foot plate 8. Figure 1 , Figure 6 and Figure 7 In the embodiment, the ball head 601 at the lower end of the right-hand screw rod 6 is disposed in the ball socket 803 of the boss 802 on the supporting foot plate 8 .

[0036] Specifically, a plurality of reinforcing ribs 801 are arranged between the outer periphery of the boss 802 and the support foot plate 8. The plurality of reinforcing ribs 801 are evenly distributed around the axis of the boss 802. The function of the reinforcing ribs 801 is to increase the reliability of the support foot plate 8 and prevent the support foot plate 8 from deforming when the force is unevenly applied. The more reinforcing ribs 801 there are, the less likely the support foot plate 8 is to deform. Figure 8 In the illustrated embodiment, the number of the reinforcing ribs 801 is 4, while in other embodiments, the number of the reinforcing ribs 801 may be 0, 3, 6 or other numbers.

[0037] The ball head retaining ring is a pressing ring 5, which is installed at the opening of the ball socket 803 through a threaded fastener. The function of the pressing ring 5 is to press the pressing ring 5 down to press the ball head 601 when the platform height needs to be adjusted during the support process, so as to prevent the right-hand screw 6 from rotating with the adjusting rod 3 and being unable to extend when the adjusting rod 3 is turned; when the ground is uneven during the installation process, the pressing ring 5 is loosened, and the pressing ring 5 is in the release position at this time, and the right-hand screw 6 can be tilted at a certain angle, and then its extension length is adjusted to keep the platform level.

[0038] Specifically, the pressing ring 5 is a split structure, which is assembled to the corresponding telescopic rod along the radial direction. The split structure makes it more convenient to install the pressing ring 5. Figure 1 , Figure 7 and Figure 8 As shown, three threaded holes for screws 7 to pass through are evenly distributed on each pressing ring 5, and the pressing ring 5 is connected to the upper end surface of the boss 802 through the screws 7. A spring washer 9 is provided between the screws 7 and the pressing ring 5 to press the pressing ring 5 on the surface of the boss 802 to prevent the screws 7 from loosening during use. In other embodiments, the connection between the pressing ring 5 and the boss 802 can also be a pin connection, etc.

Claims

1. A two-way telescopic outrigger, characterized in that: It includes telescopic rods at upper and lower ends and an adjusting rod connecting the two telescopic rods, the telescopic rods and the adjusting rods are both matched by threads, a platform connecting end is provided on the telescopic rod at the upper end, and a supporting foot plate is connected to the telescopic rod at the lower end, a ball head is provided on one of the supporting foot plate and the telescopic rod, and a ball socket that cooperates with the ball head to form a universal joint is provided on the other, a ball head retaining ring is provided at the opening of the ball socket, the ball head retaining ring is configured with an elastic part that presses it toward the ball socket, and the ball head retaining ring has a pressing position that presses and locks the ball head and the ball socket and a releasing position that floats with the ball head.

2. The bidirectional telescopic leg according to claim 1, characterized in that: The ball head retaining ring is a pressure ring, and the pressure ring is installed at the opening of the ball socket through a threaded fastener.

3. The bidirectional telescopic leg according to claim 1 or 2, characterized in that: The ball head retaining ring is a split structure and is assembled to the corresponding telescopic rod along the radial direction.

4. The bidirectional telescopic leg according to claim 1, characterized in that: The ball socket is formed on the boss after a boss is arranged on the component where the ball socket is located, and a reinforcing rib is arranged between the outer periphery of the boss and the component where the ball socket is located.

5. The bidirectional telescopic leg according to claim 4, characterized in that: There are multiple reinforcing ribs, which are evenly distributed around the central axis of the boss.

6. The bidirectional telescopic leg according to claim 1, characterized in that: The telescopic rod is an externally threaded rod, and the adjusting rod is a hollow rod with internal threads.

7. The bidirectional telescopic support leg according to claim 6, characterized in that: The externally threaded rods are respectively provided with locking nuts for tightly matching with corresponding ends of the hollow rods to lock the corresponding externally threaded rods.

8. The bidirectional telescopic support leg according to claim 7, characterized in that: A handle for rotating the locking nut is provided on the peripheral side of the locking nut.

9. The bidirectional telescopic leg according to claim 1, characterized in that: The adjusting rod is provided with a socket for installing the wrench force applying rod or is fixedly provided with the wrench force applying rod.

10. The bidirectional telescopic leg according to claim 1, characterized in that: The elastic member is a spring washer.

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