Movable elbow assembly tool

Abstract

The utility model discloses a movable elbow assembling tool which is mainly composed of a supporting base, a clamping assembly and a pipe pulling assembly. The supporting base provides a stable platform for all the assemblies, and the center of the clamping assembly and the center of the pipe pulling assembly are coaxially arranged. The clamping assembly comprises a fixing plate, a sliding rail, a clamping block and a threaded rod, the threaded rod is rotated through a hand wheel so that the clamping block can move along the sliding rail, and the movable elbow is clamped through a V-shaped groove. The pipe shifting assembly is composed of a rotating shaft, a main shifting rod, an auxiliary shifting rod, an adjusting rod, a speed reducer and a driving motor, and the driving motor drives the rotating shaft through the speed reducer to achieve elbow rotation. In addition, a guide seat, a threaded sleeve and the like are further arranged and used for adjusting the position of the clamping assembly, a foot switch controls the motor, and a protective cover is arranged outside the foot switch. According to the tool, automatic rotation of the movable elbow is achieved, traditional manual rotation is replaced, single-person operation is facilitated, the assembling efficiency and precision are improved, and the operation difficulty and the labor cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling and production equipment technology, specifically to a movable elbow assembly fixture. Background Technology

[0002] Sliding elbows are a common type of pipe fitting used in oilfield pipeline installation. These specialized tools in drilling and production equipment are used for connecting pipes at bends. During operation, sliding elbows need to change direction relatively flexibly, resulting in significant relative movement between their internal components. Ball bearings, located in the rotating parts of the sliding elbow, convert sliding friction into rolling friction. Since the coefficient of rolling friction is significantly lower than that of sliding friction, this greatly reduces frictional resistance between components. During oil drilling and production, pipelines frequently need to be repositioned; the presence of ball bearings makes the rotation of the sliding elbow smoother, reduces energy loss, and minimizes damage to equipment caused by frictional heat.

[0003] In the prior art, a movable elbow assembly fixture with publication number "CN210046595U" is disclosed. This assembly fixture includes: a support base; a rotating device horizontally and rotatably connected to the support base; and a first clamping device, a second clamping device, and a third clamping device disposed on the rotating device, arranged circumferentially around the rotation axis of the rotating device. This invention uses the first clamping device to clamp the first movable elbow section, keeping the loading hole facing upwards, and assembles the first and second movable elbow sections. After assembly, the second clamping device fixes the second movable elbow section, and a reduction motor drives the rotating device to keep the loading hole of the second movable elbow section facing upwards, assembling the third movable elbow section. Repeating the above steps allows for multiple flips to keep the loading hole facing upwards and fix the elbow, facilitating the installation of the movable elbow.

[0004] However, existing technologies still have significant shortcomings, such as:

[0005] In existing technologies, when assembling movable elbows, install the ball bearings by manually rotating the elbow, requiring multiple workers to cooperate—one to rotate the elbow and another to install the ball bearings. Furthermore, traditional manual rotation of the elbow is not only labor-intensive but also difficult to maintain high efficiency for extended periods. Operators are prone to fatigue during manual rotation, and work efficiency gradually decreases over time. Utility Model Content

[0006] The purpose of this utility model is to provide a tooling for assembling movable elbows to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A movable elbow assembly fixture includes a support base, on which a clamping assembly and a pipe-pulling assembly are fixedly mounted. The clamping assembly is used to fix one of the movable elbows, and the pipe-pulling assembly is used to drive the other movable elbow to rotate.

[0009] The clamping center of the clamping assembly is coaxially arranged with the rotation center of the tube-pulling assembly.

[0010] Preferably, the clamping assembly includes a fixed plate disposed on a support base, a slide rail fixedly disposed on the fixed plate, and two clamping blocks slidably disposed on the slide rail;

[0011] The fixed plate is rotatably provided with two screws with opposite directions of rotation, and the two screws are fixedly connected to each other. The two clamping blocks are respectively engaged with the screws through threaded holes.

[0012] Preferably, the lever assembly includes a rotating shaft rotatably mounted on a support base, a main lever fixedly mounted at one end of the rotating shaft, an adjusting rod slidably mounted on the main lever, a locking screw mounted on the adjusting rod, and a secondary lever fixedly mounted on the adjusting rod.

[0013] A speed reducer is fixedly mounted on the support base, and a drive motor is fixedly mounted on the speed reducer. The shaft of the drive motor is fixedly connected to the input end of the speed reducer, and the output end of the speed reducer is fixedly connected to the rotating shaft.

[0014] Preferably, the main lever has an anti-rotation groove, the locking screw extends into the anti-rotation groove, and the auxiliary lever is fitted with a buffer sleeve.

[0015] Preferably, a guide seat and a screw sleeve are fixedly provided on the support base, the fixing plate is slidably disposed in the guide seat through a guide post, and a lead screw is rotatably disposed on the fixing plate, the lead screw cooperating with the screw sleeve for transmission.

[0016] Preferably, a handwheel is fixedly provided at one end of both the screw and the lead screw.

[0017] Preferably, the clamping block has a V-shaped groove.

[0018] Preferably, it also includes a foot switch, which is electrically connected to the drive motor.

[0019] Preferably, a protective cover is provided on the outside of the foot switch.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. The design of the clamping and manipulating components facilitates single-person operation. The operator can first use the clamping components to secure one movable elbow, then adjust the position of the auxiliary manipulator using the adjusting rod to bring it into contact with another movable elbow. Next, by controlling the drive motor to rotate the elbow, the operator can independently add ball bearings to the connection points of the elbow using both hands during rotation, allowing a single person to complete the elbow assembly.

[0022] 2. The drive motor is started and stopped by stepping on a foot switch, enabling automatic rotation of the elbow. The entire operation is simple and intuitive, requiring no complex skills training. Ordinary operators can complete the operation independently after simple guidance, reducing training costs. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the overall device of this utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of the overall device of this utility model from another perspective;

[0025] Figure 3 This is a three-dimensional structural diagram of the clamping component of this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the guide seat and guide post of this utility model.

[0027] Figure 5 This is a three-dimensional structural diagram of the tube-pulling assembly and clamping assembly of this utility model;

[0028] Figure 6 This is a schematic diagram of the operation of the tube-pulling assembly of this utility model.

[0029] In the diagram: 1. Support base; 2. Clamping assembly; 21. Fixing plate; 22. Slide rail; 23. Clamping block; 231. V-groove; 24. Screw; 3. Tube assembly; 31. Rotating shaft; 32. Main lever; 321. Anti-rotation groove; 33. Adjusting rod; 34. Locking screw; 35. Secondary lever; 351. Buffer sleeve; 36. Reducer; 37. Drive motor; 4. Guide seat; 41. Screw sleeve; 42. Guide column; 43. Lead screw; 5. Handwheel; 6. Foot switch; 61. Protective cover. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1-6 This utility model provides a technical solution:

[0032] Example 1:

[0033] This assembly fixture mainly consists of a support base 1, a clamping assembly 2, and a pipe-pulling assembly 3. The support base 1 serves as the basic component of the entire fixture, providing a stable installation platform for other components. Both the clamping assembly 2 and the pipe-pulling assembly 3 are fixedly mounted on the support base 1, and to ensure the accuracy of the movable elbow assembly, the clamping center of the clamping assembly 2 is coaxially aligned with the rotation center of the pipe-pulling assembly 3.

[0034] like Figure 1 As shown, the clamping assembly 2 is used to fix one of the movable elbows. It mainly includes components such as a fixing plate 21, a slide rail 22, a clamping block 23, and a screw 24.

[0035] The fixing plate 21 is securely mounted on the support base 1 by multiple high-strength bolts, which are evenly distributed along the edges of the fixing plate 21 to ensure the stability of the installation. The fixing plate 21 is typically made of high-strength steel plate and undergoes precise machining and surface treatment to ensure its flatness and surface quality, providing a good foundation for the installation of other components.

[0036] The slide rail 22 is fixed to the fixed plate 21 by welding or bolting. The slide rail 22 is generally a high-precision linear slide rail, possessing good straightness and wear resistance. The length of the slide rail 22 is designed according to actual needs to meet the sliding stroke requirements of the clamping block 23.

[0037] Two clamping blocks 23 slide against the slide rail 22 via grooves. Each clamping block 23 has a threaded hole that matches the screw 24. The clamping blocks 23 are generally made of alloy structural steel, which has undergone quenching and tempering treatment, resulting in high hardness and strength. A V-groove is formed on the inner side of the clamping block 23. The angle and size of the V-groove are optimized according to the pipe diameter of common movable elbows, which can better fit the outer surface of the movable elbow, increase friction, and improve clamping stability. Through the reasonable setting of the V-groove 231, the center of the elbow can be made coaxial with the rotation center of the rotating shaft 31.

[0038] Two screws 24 with opposite directions of rotation are rotatably mounted on the fixed plate 21 via bearing seats. The bearing seats are fixed to the fixed plate 21, providing stable support and rotational freedom for the screws 24. The two screws 24 are fixedly connected by welding to ensure that they can rotate synchronously. When the screws 24 are rotated, because the two screws 24 have opposite directions of rotation, the two clamping blocks 23 that cooperate with the screws 24 will move in opposite directions or in opposite directions along the slide rail 22, thereby completing the clamping of the elbow.

[0039] A handwheel 5 is fixedly installed at one end of the screw 24. The outer surface of the handwheel 5 has anti-slip texture, which makes it convenient for the operator to manually rotate the screw 24, thereby realizing the clamping and loosening operation of the movable elbow.

[0040] The pipe-shifting assembly 3 is used to drive another movable elbow to rotate. It mainly consists of a rotating shaft 31, a main lever 32, an adjusting rod 33, a secondary lever 35, a reducer 36, and a drive motor 37.

[0041] The rotating shaft 31 is rotatably mounted on the support base 1 via high-precision bearings. The bearings are installed in the bearing housing of the support base 1, providing stable support and a low-friction rotational environment for the rotating shaft 31. The rotating shaft 31 is typically made of high-quality alloy steel, precision machined and heat-treated, possessing high strength and rigidity, and capable of withstanding torque and bending moment during rotation.

[0042] The main lever 32 is fixedly mounted at one end of the rotating shaft 31 and is perpendicular to the rotating shaft 31. An adjusting rod 33 is slidably mounted on the main lever 32, and an anti-rotation groove 321 is also provided on the main lever 32.

[0043] A locking screw 34 is provided on the adjusting rod 33. After the adjusting rod 33 slides to the appropriate position, the locking screw 34 is tightened, so that the locking screw 34 extends into the anti-rotation groove 321 of the main lever 32, thereby fixing the adjusting rod 33 to the main lever 32 and preventing it from sliding during operation. A secondary lever 35 is fixedly provided at one end of the adjusting rod 33. The secondary lever 35 and the adjusting rod 33 can be connected by welding or bolts to ensure a firm connection. A buffer sleeve 351 is fitted on the secondary lever 35. The buffer sleeve 351 is generally made of elastic materials such as rubber. Its function is to buffer when the secondary lever 35 comes into contact with the movable elbow, so as to avoid damage to the surface of the movable elbow.

[0044] The reducer 36 is bolted to the support base 1, and the drive motor 37 is also bolted to the reducer 36. The output shaft of the drive motor 37 is fixedly connected to the input end of the reducer 36 via a coupling, and the output end of the reducer 36 is fixedly connected to the rotating shaft 31 via a coupling. The drive motor 37 provides power to the toggle assembly 3. After the reducer 36 reduces speed and increases torque, it drives the rotating shaft 31, the main lever 32, and the auxiliary lever 35 to rotate, thereby enabling the movable elbow to rotate. This allows the operator to independently add rollers between the elbows, reducing operational difficulty.

[0045] Example 2:

[0046] Based on Embodiment 1, in order to assemble elbows of different sizes, in this embodiment, the clamping component 2 is slidably mounted on the support base 1 to satisfy the above-mentioned functions.

[0047] like Figure 4 As shown, a guide seat 4 and a threaded sleeve 41 are fixedly mounted on the support base 1 by bolts. A guide post 42 is fixedly mounted on the fixing plate 21, and the guide post 42 can be connected to the fixing plate 21 by welding or interference fit. The guide post 42 is inserted into the guide seat 4, forming a sliding fit with the guide seat 4. The guide seat 4 provides guidance for the sliding of the fixing plate 21, ensuring the straightness of the fixing plate 21 during the sliding process.

[0048] A lead screw 43 is rotatably mounted on the fixed plate 21 via a bearing, and a threaded transmission engagement is formed between the lead screw 43 and the threaded sleeve 41. A handwheel 5 is fixedly mounted on one end of the lead screw 43. When the operator turns the handwheel 5, the lead screw 43 rotates within the threaded sleeve 41, thereby causing the fixed plate 21 to slide linearly along the guide seat 4, thus adjusting the position of the clamping assembly 2.

[0049] This fixture is also equipped with a foot switch 6, which is electrically connected to the drive motor 37 via a wire. The operator can control the start and stop of the drive motor 37 by stepping on the foot switch 6, facilitating flexible control of the rotating elbow during operation. To protect the foot switch 6, a protective cover 61 is installed on its outer side. The protective cover 61 is generally made of plastic or metal and is fixed around the foot switch 6 by bolts or clips to prevent accidental stepping or damage from external objects.

[0050] Working principle: When assembling the movable elbow, first turn the handwheel 5 at one end of the screw 24 according to the pipe diameter of the movable elbow. Since the two screws 24 rotate in opposite directions, they will drive the two clamping blocks 23 to move in opposite directions along the slide rail 22 until the V-shaped grooves of the two clamping blocks 23 tightly clamp one of the movable elbows.

[0051] Next, connect and assemble the other movable elbow with the fixed movable elbow. After connecting the two elbows, adjust the handwheel 5 on the screw 43 according to the position and size of the other movable elbow, so that the clamping assembly 2 moves the elbow to a position close to the tube-shifting assembly 3. After reaching the appropriate position, slide the adjusting rod 33 to the position on the main shifting rod 32, so that the auxiliary shifting rod 35 can be inserted into the other movable elbow. After adjustment, tighten the locking screw 34 to fix the adjusting rod 33. At this time, the auxiliary shifting rod 35 is in contact with the movable elbow.

[0052] When the operator presses the foot switch 6, the drive motor 37 starts, and the power is transmitted to the reducer 36 through the coupling. The reducer 36 reduces the power and increases the torque, and then transmits the power to the rotating shaft 31 through the coupling. The rotating shaft 31 drives the main lever 32 and the auxiliary lever 35 to rotate. The auxiliary lever 35 drives the movable elbow to rotate. The operator can independently add ball bearings to the connection position of the elbow to assemble it with the clamped movable elbow.

[0053] After assembly, release the foot switch 6 to stop the drive motor 37 from rotating. Turn the handwheel 5 at one end of the screw 24 to make the two clamping blocks 23 move in opposite directions along the slide rail 22, releasing the clamp on the movable elbow, and then you can take out the assembled movable elbow.

[0054] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixture for assembling a movable elbow, comprising a support base (1), characterized in that: The support base (1) is fixedly provided with a clamping assembly (2) and a pipe-pulling assembly (3). The clamping assembly (2) is used to fix one of the movable elbows, and the pipe-pulling assembly (3) is used to drive the other movable elbow to rotate. The clamping center of the clamping assembly (2) is coaxially arranged with the rotation center of the tube-pulling assembly (3); The clamping assembly (2) includes a fixing plate (21) disposed on the support base (1), a slide rail (22) is fixedly disposed on the fixing plate (21), and two clamping blocks (23) are slidably disposed on the slide rail (22). Two screws (24) with opposite directions of rotation are rotatably mounted on the fixed plate (21). The two screws (24) are fixedly connected to each other, and the two clamping blocks (23) are respectively engaged with the screws (24) through threaded holes. The dial assembly (3) includes a rotating shaft (31) rotatably mounted on a support base (1), a main lever (32) fixedly mounted at one end of the rotating shaft (31), an adjusting rod (33) slidably mounted on the main lever (32), a locking screw (34) mounted on the adjusting rod (33), and a secondary lever (35) fixedly mounted on the adjusting rod (33). A speed reducer (36) is fixedly installed on the support base (1), and a drive motor (37) is fixedly installed on the speed reducer (36). The shaft of the drive motor (37) is fixedly connected to the input end of the speed reducer (36), and the output end of the speed reducer (36) is fixedly connected to the rotating shaft (31).

2. The assembly fixture for a movable elbow according to claim 1, characterized in that: The main lever (32) has an anti-rotation groove (321), the locking screw (34) extends into the anti-rotation groove (321), and the auxiliary lever (35) is fitted with a buffer sleeve (351).

3. The assembly fixture for a movable elbow according to claim 2, characterized in that: The support base (1) is fixedly provided with a guide seat (4) and a screw sleeve (41). The fixed plate (21) is slidably provided in the guide seat (4) through the guide post (42). The fixed plate (21) is rotatably provided with a lead screw (43). The lead screw (43) cooperates with the screw sleeve (41) for transmission.

4. The assembly fixture for a movable elbow according to claim 1, characterized in that: A handwheel (5) is fixedly installed at one end of both the screw (24) and the lead screw (43).

5. The assembly fixture for a movable elbow according to claim 2, characterized in that: The clamping block (23) has a V-shaped groove (231).

6. The assembly fixture for a movable elbow according to claim 1, characterized in that: It also includes a foot switch (6), which is electrically connected to the drive motor (37).

7. The assembly fixture for a movable elbow according to claim 6, characterized in that: A protective cover (61) is provided on the outside of the foot switch (6).

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