Clamp for welding ball valve

Abstract

The utility model discloses a clamp for welding a ball valve, which belongs to the technical field of welding clamps and comprises a bottom plate, a screw rod driving mechanism and a supporting door frame are mounted on the bottom plate, a height-adjustable supporting frame is mounted on the screw rod driving mechanism, and a pipe clamp is mounted on the height-adjustable supporting frame and comprises a lower clamping block and an upper clamping block. And the valve body clamp is installed on the supporting door frame, comprises two sets of clamping frames and is used for clamping and fixing the valve body to be welded. According to the technical scheme, the arrangement height of the pipe clamp can be changed by adjusting the height-adjustable supporting frame, namely, the axis height of a pipe clamped by the pipe clamp is adjusted, so that the axis of the pipe can coincide with the axis of the valve body, then tight splicing of the welding position of the two parts is achieved, in addition, the distance between the pipe clamp and the valve body clamp can be changed through the lead screw driving mechanism, and the welding efficiency is improved. Therefore, the clamp can be applied to welding work of ball valves of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, specifically a fixture for welding ball valves. Background Technology

[0002] Ball valve welding fixtures are specialized tooling fixtures used in the ball valve manufacturing process to fix and position ball valve components (such as the ball and valve body, valve stem and valve body, etc.) during welding. These fixtures are crucial for ensuring the precision and quality of ball valve welding. Ball valve welding fixtures can accurately fix and position the various components of the ball valve in the correct positions, ensuring that the components do not move or shift during welding. Furthermore, using fixtures simplifies the welding process, reduces manual adjustment time, and thus improves production efficiency.

[0003] The utility model with announcement number CN219665801U discloses a special fixture for machining a fully welded ball valve. This utility model can clamp and fix the fully welded ball valve by moving the upper and lower clamping blocks to ensure the stability of the fully welded ball valve during machining. In addition, the fully welded ball valve can be rotated to machine different surfaces of the fully welded ball valve.

[0004] However, the height of the clamping components on both sides of the above-mentioned fixture cannot be adjusted. Furthermore, the ball valve is usually not cylindrical, and the valve body in the middle is usually larger than the pipe body on both sides. This means that when welding the valve body to the connecting pipes on both sides, if the above-mentioned fixture is used, it cannot be ensured that the two parts can be coaxially spliced. That is, due to the difference in the height of the two parts' axes, the above-mentioned fixture cannot achieve the splicing of the weld joint, resulting in a height difference. Therefore, to address the above problem, a ball valve welding fixture is proposed. Utility Model Content

[0005] The technical problem this utility model aims to solve is to provide a welding fixture for ball valves. This fixture includes a pipe clamp and a valve body clamp, used to clamp and fix the pipe fitting and the valve body, respectively. The pipe clamp is mounted on an adjustable support frame, allowing the height of the pipe clamp to be adjusted, thus adjusting the axial height of the clamped pipe fitting. This ensures the pipe fitting's axis coincides with the valve body's axis, achieving a tight fit at the weld joint. Furthermore, a screw drive mechanism can change the distance between the pipe clamp and the valve body clamp, enabling the fixture to be applied to welding ball valves of different sizes. This solves the technical problem in comparative technologies where the height of the clamping components on both sides cannot be adjusted, resulting in a height difference between the central axis and the valve body during welding, thus preventing a tight fit.

[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0007] A ball valve welding fixture includes a base plate on which a screw drive mechanism and a support gantry are mounted. An adjustable height support frame is mounted on the screw drive mechanism, which drives the adjustable height support frame to move back and forth. A pipe clamp is movably mounted on the adjustable height support frame and includes a lower clamping block and an upper clamping block. These two blocks work together to clamp and fix the pipe fitting to be welded to the valve body. A valve body clamp is mounted on the support gantry and includes two symmetrically arranged clamping frames. These two sets of clamping frames work together to clamp and fix the valve body to be welded. Based on the above technical solution, the setting height of the pipe clamp can be changed by adjusting the adjustable height support frame, i.e., adjusting the axial height of the pipe fitting held by the pipe clamp, so that the axis of the pipe fitting can coincide with the axis of the valve body, thereby achieving a tight fit at the welding point of the two parts. In addition, the screw drive mechanism can change the distance between the pipe clamp and the valve body clamp, thus enabling the fixture to be applied to the welding of ball valves of different sizes.

[0008] In one possible implementation, the adjustable support frame includes a base with two threaded rods fixedly mounted on its upper surface. An adjustable support wheel is threaded onto the threaded rod. When the adjustable support wheel is turned, its height on the threaded rod changes, thereby changing its support height and achieving the function of height adjustment.

[0009] In one possible implementation, connecting feet are fixedly provided on both sides of the lower clamping block and the upper clamping block, which are sleeved on the threaded rod and slide in contact with it. The connecting feet on the lower clamping block are in contact with the height adjustment support wheel. The above form can realize the height adjustment of the lower clamping block and the upper clamping block, providing the necessary structural basis for the overall height adjustment of the pipe clamp.

[0010] In one possible implementation, guide rods are fixedly provided on both sides of the lower clamping block, which pass through both sides of the upper clamping block and slide in contact with it. A first horizontal plate is fixedly connected to the top of the guide rod, and a first adjusting screw is threaded onto the plate. The bottom end of the first adjusting screw is rotatably connected to the upper clamping block. When the first adjusting screw is turned, it will drive the upper clamping block to move up or down, thus cooperating with the lower clamping block to complete the loosening and clamping of the component to be clamped.

[0011] In one possible implementation, the support gantry includes support legs with a second horizontal plate mounted on its top, and several guide grooves are provided on both sides of the support legs. The above structure provides the necessary structural foundation for the overall installation and normal operation of the valve body clamp.

[0012] In one possible implementation, the valve body clamp includes a lower bracket fixedly disposed between the support legs and an upper bracket slidably disposed between the support legs. Two sets of clamping frames are respectively mounted on the lower bracket and the upper bracket. A second adjusting screw is threadedly connected to the second horizontal plate, and its bottom end is rotatably connected to the upper bracket. In addition, guide blocks that slide in guide grooves are fixedly disposed on both sides of the upper bracket. When the second adjusting screw is turned, it will drive the upper bracket to move the clamping frames on it up or down, which, together with the clamping frames on the lower bracket, completes the loosening and clamping of the component to be clamped. Furthermore, the cooperation between the guide blocks and the guide grooves can play a guiding role and prevent the upper bracket from deviating during the up and down movement.

[0013] In one possible implementation, the clamping frame includes a base plate with clamping plates fixedly disposed at both its front and rear ends. The clamping plates have mounting grooves with anti-slip rubber strips. This structure enables multi-point fixation of the valve body structure, improving clamping stability. At the same time, the anti-slip rubber strips increase the friction between the clamping plates and the valve body, further improving clamping stability.

[0014] In one possible implementation, the lead screw drive mechanism includes a guide rail, wherein a sliding mounting platform fixedly connected to the base is slidably disposed therein. A drive motor is mounted on one end of the guide rail, and its output shaft is fixedly connected to a drive screw threadedly connected to the sliding mounting platform. When the drive motor is working, it drives the drive screw to rotate, thereby driving the sliding mounting platform to slide, so as to adjust the position of the adjustable height support frame.

[0015] In summary, this utility model has the following beneficial technical effects:

[0016] The welding fixture includes a pipe clamp and a valve body clamp, which are used to clamp and fix the pipe fitting and the valve body respectively. The pipe clamp is mounted on an adjustable support frame. The setting height of the pipe clamp can be changed by adjusting the adjustable support frame, that is, adjusting the axial height of the pipe fitting held by the pipe clamp, so that the axial line of the pipe fitting can coincide with the axial line of the valve body, thereby achieving a tight splicing of the two parts at the weld joint.

[0017] In addition, the screw drive mechanism can drive the adjustable support frame to move back and forth, adjust its position, and thus change the distance between the pipe clamp and the valve body clamp. This allows the clamp to be used for welding ball valves of different sizes, thus broadening its applicability. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the valve body clamping structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the pipe clamping structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the lead screw drive mechanism of this utility model;

[0023] Figure 5 This is a schematic diagram of the clamping frame structure of this utility model.

[0024] In the diagram: 1. Base plate; 2. Screw drive mechanism; 21. Guide rail; 22. Sliding mounting platform; 23. Drive motor; 24. Drive screw; 3. Adjustable height support frame; 31. Base; 32. Threaded rod; 33. Adjustable height support wheel; 4. Pipe clamp; 41. Lower clamping block; 42. Guide rod; 43. Upper clamping block; 44. First horizontal plate; 45. First adjusting screw; 46. Connecting foot; 5. Support frame; 51. Support leg; 52. Second horizontal plate; 53. Guide groove; 6. Valve body clamp; 61. Lower bracket; 62. Clamping frame; 621. Frame base plate; 622. Clamping plate; 623. Anti-slip rubber strip; 63. Upper bracket; 64. Second adjusting screw; 65. Guide block. Detailed Implementation

[0025] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0026] like Figure 1 - Figure 3 As shown, this embodiment provides a ball valve welding fixture, including a base plate 1 on which a screw drive mechanism 2 and a support gantry 5 are mounted. An adjustable height support frame 3 is mounted on the screw drive mechanism 2, which drives the adjustable height support frame 3 to move back and forth. A pipe clamp 4 is movably mounted on the adjustable height support frame 3 and includes a lower clamping block 41 and an upper clamping block 43. These two components work together to clamp and fix the pipe fitting to be welded to the valve body. A valve body clamp 6 is mounted on the support gantry 5 and includes two sets of... Symmetrically arranged clamping frames 62, two sets of clamping frames 62 work together to clamp and fix the valve body to be welded. Based on the above technical solution, the setting height of the pipe clamp 4 can be changed by adjusting the adjustable support frame 3, that is, adjusting the axial height of the pipe clamp 4, so that the axial line of the pipe can coincide with the axial line of the valve body, thereby achieving a tight splicing of the two parts at the welding point. In addition, the screw drive mechanism 2 can change the distance between the pipe clamp 4 and the valve body clamp 6, so that the clamp can be applied to the welding of ball valves of different sizes.

[0027] like Figure 3As shown, the adjustable height support frame 3 includes a base 31, on the upper surface of which two threaded rods 32 are fixedly mounted. Adjustable height support wheels 33 are threadedly connected to the threaded rods 32. When the adjustable height support wheels 33 are turned, their height on the threaded rods 32 changes, thus changing the support height and achieving the function of height adjustment. Connecting feet 46 are fixedly mounted on both sides of the lower clamping block 41 and the upper clamping block 43, which are sleeved on the threaded rods 32 and slide in contact with them. The connecting feet 46 on the lower clamping block 41 are in contact with the adjustable height support wheels 33. This configuration allows for height adjustment of the lower clamping block 41 and the upper clamping block 43, providing the necessary structural basis for the overall height adjustment of the pipe clamp 4.

[0028] To achieve the clamping function, guide rods 42 are fixedly provided on both sides of the lower clamping block 41. They pass through both sides of the upper clamping block 43 and slide in contact with it. A first horizontal plate 44 is fixedly connected to the top of the guide rod 42, and a first adjusting screw 45 is threadedly connected to it. The bottom end of the first adjusting screw 45 is rotatably connected to the upper clamping block 43. When the first adjusting screw 45 is turned, it will drive the upper clamping block 43 to move up or down, and cooperate with the lower clamping block 41 to complete the release and clamping of the part to be clamped.

[0029] like Figure 2 As shown, the support gantry 5 includes a support leg 51, with a second horizontal plate 52 mounted on its top end, and several guide grooves 53 are provided on both sides of the support leg 51. The above structure provides the necessary structural foundation for the overall installation and normal operation of the valve body clamp 6.

[0030] The valve body clamp 6 includes a lower bracket 61 fixedly disposed between the support legs 51 and an upper bracket 63 slidably disposed between the support legs 51. Two sets of clamping frames 62 are respectively mounted on the lower bracket 61 and the upper bracket 63. A second adjusting screw 64 is threadedly connected to the second horizontal plate 52, and its bottom end is rotatably connected to the upper bracket 63. In addition, guide blocks 65 that slide in the guide groove 53 are fixedly disposed on both sides of the upper bracket 63. When the second adjusting screw 64 is turned, it will drive the upper bracket 63 to move the clamping frames 62 on it up or down, and cooperate with the clamping frames 62 on the lower bracket 61 to complete the release and clamping of the clamped parts. In addition, the cooperation between the guide blocks 65 and the guide groove 53 can play a guiding role and prevent the upper bracket 63 from deviating during the up and down movement.

[0031] like Figure 5 As shown, the clamping frame 62 includes a frame base plate 621, with clamping plates 622 fixedly installed at both its front and rear ends. The clamping plates 622 have mounting grooves, in which anti-slip rubber strips 623 are provided. The above structure can achieve multi-point fixation of the valve body structure, improving the clamping stability. At the same time, the anti-slip rubber strips 623 can increase the friction between the clamping plates 622 and the valve body, further improving the clamping stability.

[0032] like Figure 4As shown, the lead screw drive mechanism 2 includes a guide rail 21, in which a sliding mounting platform 22 fixedly connected to the base 31 is slidably arranged. A drive motor 23 is installed at one end of the guide rail 21, and its output shaft is fixedly connected to a drive lead screw 24 threadedly connected to the sliding mounting platform 22. When the drive motor 23 works, it drives the drive lead screw 24 to rotate, thereby driving the sliding mounting platform 22 to slide, so as to adjust the position of the adjustable height support frame 3.

[0033] The working principle and usage process of this utility model:

[0034] The welding fixture includes a pipe clamp 4 and a valve body clamp 6, which are used to clamp and fix the pipe fitting and the valve body, respectively. The pipe clamp 4 is mounted on an adjustable support frame 3. The height of the pipe clamp 4 can be changed by adjusting the adjustable support frame 3, that is, adjusting the axial height of the pipe fitting held by the pipe clamp 4 so that the axis of the pipe fitting can coincide with the axis of the valve body, thereby achieving a tight fit between the two parts at the weld. The principle of the adjustable support frame 3 is that when the adjustable support wheel 33 is turned, its height on the threaded rod 32 is changed, thereby changing its support height and playing a height adjustment role.

[0035] When clamping pipe fittings, turning the first adjusting screw 45 will drive the upper clamping block 43 to move up or down, which, together with the lower clamping block 41, will release and clamp the component to be clamped. When clamping valve body, turning the second adjusting screw 64 will drive the upper bracket 63 to move the clamping frame 62 on it up or down, which, together with the clamping frame 62 on the lower bracket 61, will release and clamp the component to be clamped.

[0036] In addition, the screw drive mechanism 2 can drive the adjustable support frame 3 to move back and forth through operation, adjust its position, and thus change the distance between the pipe clamp 4 and the valve body clamp 6. This allows the clamp to be applied to the welding of ball valves of different sizes, thus broadening its applicability.

[0037] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A fixture for welding ball valves, characterized in that, include: The base plate (1) is equipped with a screw drive mechanism (2) and a support frame (5), and an adjustable height support frame (3) is installed on the screw drive mechanism (2). The screw drive mechanism (2) is used to drive the adjustable height support frame (3) to move back and forth. Pipe clamp (4), which is movably mounted on adjustable support frame (3), and includes a lower clamp (41) and an upper clamp (43), which work together to clamp and fix the pipe fitting to be welded to the valve body; The valve body clamp (6) is mounted on the support gantry (5) and includes two sets of symmetrically arranged clamping frames (62), which work together to clamp and fix the valve body to be welded.

2. The ball valve welding fixture according to claim 1, characterized in that: The adjustable height support frame (3) includes a base (31), on which two threaded rods (32) are fixedly installed. The threaded rods (32) are threadedly connected to the adjustable height support wheel (33).

3. The ball valve welding fixture according to claim 2, characterized in that: Both sides of the lower clamping block (41) and the upper clamping block (43) are fixedly provided with connecting feet (46), which are sleeved on the threaded rod (32) and slide in contact with it. The connecting feet (46) on the lower clamping block (41) are in contact with the height adjustment support wheel (33).

4. The ball valve welding fixture according to claim 1, characterized in that: Guide rods (42) are fixedly provided on both sides of the lower clamping block (41), which pass through both sides of the upper clamping block (43) and slide in contact with it. A first horizontal plate (44) is fixedly connected to the top of the guide rod (42), and a first adjusting screw (45) is threadedly connected to it. The bottom end of the first adjusting screw (45) is rotatably connected to the upper clamping block (43).

5. A ball valve welding fixture according to claim 1, characterized in that: The supporting gantry (5) includes a supporting leg (51), with a second horizontal plate (52) mounted on its top, and several guide grooves (53) are provided on both sides of the supporting leg (51).

6. A ball valve welding fixture according to claim 5, characterized in that: The valve body clamp (6) includes a lower bracket (61) fixedly disposed between the support legs (51) and an upper bracket (63) slidably disposed between the support legs (51). Two sets of clamping frames (62) are respectively installed on the lower bracket (61) and the upper bracket (63). A second adjusting screw (64) is threadedly connected to the second horizontal plate (52), and its bottom end is rotatably connected to the upper bracket (63). In addition, guide blocks (65) that slide in the guide groove (53) are fixedly disposed on both sides of the upper bracket (63).

7. A ball valve welding fixture according to claim 1, characterized in that: The clamping frame (62) includes a frame base plate (621), and clamping plates (622) are fixedly provided at both its front and rear ends. The clamping plates (622) are provided with mounting grooves, and anti-slip rubber strips (623) are provided therein.

8. A ball valve welding fixture according to claim 2, characterized in that: The lead screw drive mechanism (2) includes a guide rail (21), in which a sliding mounting platform (22) fixedly connected to the base (31) is slidably arranged. A drive motor (23) is installed at one end of the guide rail (21), and its output shaft is fixedly connected to a drive lead screw (24) threadedly connected to the sliding mounting platform (22).

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