Welding fixture for processing valve cover of flat gate valve

Abstract

The utility model discloses a welding fixture for processing a valve cover of a flat gate valve, which belongs to the technical field of valve cover fixing and comprises a placing plate, the bottom end of the placing plate is fixedly connected with a mounting base, a plurality of slots are arranged on the periphery of the mounting base, the valve cover is placed at the top end of the placing plate, and the valve cover is fixed on the mounting base. A fixed pipe in the middle of the mounting base is connected with a sliding column, and a self-adaptive clamp is arranged on the inner side of the mounting base. According to the utility model, a flexible and stable clamp system is constructed through the components such as the open groove, the bent plate, the clamping block, the sliding groove and the push column. According to the system, self-adaptive adjustment can be conducted according to the sizes and shapes of different valve decks, and the stability and precision of the valve decks in the clamping process are ensured. In addition, through sliding of the push column in the sliding groove and rotating connection of the bent plate and the third convex groove, the flexibility and the clamping force of the clamp are further improved, and therefore the machining quality and efficiency of the valve deck of the flat gate valve are effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve cover fixed technical field, concretely relates to a kind of welding fixture of flat gate valve valve cover processing. BACKGROUND

[0002] The valve cover of flat gate valve is one of its key components, mainly to seal and protect internal structure. The valve cover is fastened with the valve body by bolts, forming a closed space, to prevent medium leakage. The design of the valve cover usually considers the convenience of operation and the sealing performance. Its structure is simple and compact, which can meet the installation requirements in narrow space. In some special applications, such as low temperature environment, the valve cover adopts long neck structure to make the stuffing box away from low temperature medium, protecting the sealing packing. In addition, the valve cover is also provided with an auxiliary sealing grease injection structure to further enhance the sealing performance and ensure the reliable operation of the valve.

[0003] During the welding process of the valve cover, it needs to be fixed to ensure the precision and quality of welding. The traditional welding fixture is usually adjusted according to the size of the valve cover. This adjustment method not only consumes time and effort, but also is difficult to ensure the consistency of precision each time, which is difficult to meet the needs of high-precision processing, resulting in low processing efficiency and difficult to ensure the processing precision. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a welding fixture for flat gate valve cover processing.

[0005] The technical solution adopted to solve the above technical problems is: a welding fixture for flat gate valve cover processing, including a placing plate, the bottom end of the placing plate is fixedly connected with a mounting base, the mounting base is provided with a plurality of slots around, the top end of the placing plate is placed with a valve cover, the mounting base is fixedly connected with a slide column in the middle, and the inner side of the mounting base is provided with a self-adaptive clamp.

[0006] Further, the self-adaptive clamp includes a first ring plate, the middle part of the first ring plate is slidably connected with the upper half of the slide column, a plurality of first convex grooves are fixedly connected on the surface of the four corners of the first ring plate, the plurality of first convex grooves are arranged in a circular array, and a push column is fixedly connected on the inner side of the end of the first convex groove away from the first ring plate.

[0007] Further, a plurality of grooves are provided around the first ring plate, and the plurality of grooves are arranged in a circular array, and the grooves are located between the plurality of first convex grooves.

[0008] Through the technical scheme, the self-adaptive clamp can be self-adaptively adjusted according to valve covers of different sizes, the universality and flexibility of the clamp are improved, the movement of the push column can drive the first ring plate to slide up and down along the slide column, self-adaptive adjustment is realized, the valve cover is more easily clamped, the design of the self-adaptive clamp not only improves the machining efficiency, but also ensures the machining precision, so that the size of the valve cover after welding is more accurate and meets the use requirements.

[0009] Further, the self-adaptive clamp comprises a second ring plate, the second ring plate is in sliding connection with the lower half of the slide column, a plurality of third convex grooves are fixedly connected to the periphery surface of the second ring plate, and the third convex grooves are arranged in a circumferential array.

[0010] Further, a plurality of second convex grooves are fixedly connected to the periphery surface of the second ring plate, the second convex grooves are arranged in a circumferential array, and the second convex grooves are located between the third convex grooves.

[0011] Through the technical scheme, the design of the second ring plate further enhances the stability and adaptability of the self-adaptive clamp, the third convex grooves are arranged to enable the second ring plate to cooperate with the first ring plate, by adjusting the relative position between the two, more accurate clamping of valve covers of different sizes can be realized, at the same time, the second convex grooves are located between the third convex grooves, such a design not only increases the contact points between the clamp and the valve cover, improves the firmness of the clamp, but also makes the clamp more stable during adjustment, avoids machining errors caused by the shaking of the clamp, therefore, the universality and flexibility of the self-adaptive clamp are further improved, which can better adapt to the machining requirements of valve covers of different specifications and sizes, thereby improving the machining efficiency and product quality.

[0012] Further, a hydraulic push column is fixedly connected to the surface of the mounting base in a penetrating manner, a pull sleeve is fixedly connected to the telescopic end of the hydraulic push column, and a push plate is rotatably connected to the inner side of the pull sleeve at the upper end and the lower end.

[0013] Through the technical scheme, the design of the mounting base provides a stable support basis for the self-adaptive clamp, the introduction of the hydraulic push column realizes automatic control of the valve cover clamping process, the hydraulic push column can accurately push the pull sleeve to move through the movement of the telescopic end, and the push plate rotatably connected inside the pull sleeve plays a key transmission role, one push plate is rotatably connected with the groove, so that the clamp can adapt to the curved surface or flat surface structure on one side of the valve cover, and the other push plate is rotatably connected with the second convex groove, which further enhances the clamping force and stability of the clamp on the valve cover, such a design not only simplifies the operation process of the clamp, improves the work efficiency, but also ensures the stability and safety of the valve cover during the machining process, thereby further improving the machining precision and product quality.

[0014] Further, the slotted inner side is slidably connected with a bent plate, the top end of the bent plate is rotatably connected with a clamping block, the clamping block is slidably attached to the valve cover, the middle part of the bent plate is provided with a sliding groove, the inner side of the sliding groove is slidably connected with a push column, and the end of the bent plate away from the clamping block is rotatably connected with a third convex groove.

[0015] Through the above technical scheme, the design of the slot provides a flexible sliding path for the bent plate, so that the clamping block can be adaptively adjusted according to different valve cover shapes. The clamping block at the top end of the bent plate is rotatably connected, which can closely fit the surface of the valve cover, ensuring the stability and reliability of the clamp during clamping. The setting of the sliding groove allows the push column to slide in the middle part of the bent plate. This design not only enhances the flexibility of the clamp, but also makes the clamping process smoother. At the same time, the rotatable connection between the end of the bent plate away from the clamping block and the third convex groove further enhances the overall stability and clamping force of the clamp, improving the applicability and clamping effect of the clamp, and ensuring the stability and precision of the valve cover during welding, thereby further improving the quality and efficiency of the flat gate valve cover machining.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model discloses a slotted, bent plate, clamping block, sliding groove and push column etc. component, constructs a flexible and stable clamp system. The system can be adaptively adjusted according to the size and shape of different valve covers, ensuring the stability and precision of the valve cover during clamping. In addition, through the sliding of the push column in the sliding groove and the rotatable connection of the bent plate and the third convex groove, the utility model further improves the flexibility and clamping force of the clamp, thereby effectively improving the quality and efficiency of the flat gate valve cover machining. ACCURATE DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure schematic diagram of the utility model;

[0019] Figure 2 It is the internal structure schematic diagram of the mounting base of the utility model;

[0020] Figure 3 It is the first structure schematic diagram of the adaptive clamp of the utility model;

[0021] Figure 4 It is the second structure schematic diagram of the adaptive clamp of the utility model;

[0022] Figure 5 It is the clamp structure expansion schematic diagram of the utility model.

[0023] Reference numerals: 1. Placement plate; 2. Mounting base; 3. Slot; 4. Valve cover; 5. Sliding column; 6. First ring plate; 7. Groove; 8. First protrusion; 9. Push column; 10. Push plate; 11. Pull sleeve; 12. Hydraulic push column; 13. Second ring plate; 14. Second protrusion; 15. Third protrusion; 16. Bend plate; 17. Sliding groove; 18. Clamping block. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] like Figures 1 to 5 As shown, a welding fixture for processing a flat gate valve cover in this embodiment includes a placement plate 1, a mounting base 2 fixedly connected to the bottom end of the placement plate 1, several slots 3 provided around the mounting base 2, a valve cover 4 placed on the top of the placement plate 1, a sliding column 5 fixedly connected to the middle of the mounting base 2, and an adaptive clamp provided inside the mounting base 2, which improves the flexibility and clamping force of the fixture, thereby effectively improving the quality and efficiency of processing the flat gate valve cover 4.

[0026] The adaptive fixture includes a first ring plate 6, the middle of which is slidably connected to the upper half of the sliding column 5. Several first protrusions 8 are fixedly connected to the four sides of the first ring plate 6, and the several first protrusions 8 are arranged in a circular array. A push column 9 is fixedly connected to the inner side of the first protrusion 8 away from the first ring plate 6. Several grooves 7 are provided around the first ring plate 6, and the grooves 7 are arranged in a circular array. The grooves 7 are located between the several first protrusions 8, which not only increases the contact points between the fixture and the valve cover 4 and improves the firmness of the fixture, but also makes the fixture more stable during adjustment, avoiding machining errors caused by fixture shaking.

[0027] The adaptive fixture includes a second ring plate 13, which is slidably connected to the lower half of the sliding column 5. Several third protrusions 15 are fixedly connected to the four sides of the second ring plate 13, and the third protrusions 15 are arranged in a circular array. Several second protrusions 14 are fixedly connected to the four sides of the second ring plate 13, and the several second protrusions 14 are arranged in a circular array. The several second protrusions 14 are located between the several third protrusions 15, which can better adapt to the processing requirements of valve covers 4 of different specifications and sizes, thereby improving processing efficiency and product quality.

[0028] The surface of the mounting base 2 is fixedly connected with a hydraulic push column 12, the telescopic end of the hydraulic push column 12 is fixedly connected with a pull sleeve 11, the inner side of the pull sleeve 11 is rotatably connected with two push plates 10, one end of one of the push plates 10 away from the pull sleeve 11 is rotatably connected with the groove 7, and the other end of the other push plate 10 away from the pull sleeve 11 is rotatably connected with the second convex groove 14. The introduction of the hydraulic push column 12 realizes the automatic control of the clamping process of the valve cover 4. The hydraulic push column 12 can accurately push the pull sleeve 11 to move through the movement of the telescopic end. The push plates 10 rotatably connected in the pull sleeve 11 play a key transmission role. The rotatable connection of one of the push plates 10 with the groove 7 enables the clamp to adapt to the curved surface or flat structure on one side of the valve cover 4. The rotatable connection of the other push plate 10 with the second convex groove 14 further enhances the clamping force and stability of the clamp on the valve cover 4.

[0029] The inner side of the slot 3 is slidably connected with a bent plate 16, the top end of the bent plate 16 is rotatably connected with a clamping block 18, the clamping block 18 is in sliding fit with the valve cover 4, the middle part of the bent plate 16 is provided with a sliding groove 17, the inner side of the sliding groove 17 is slidably connected with the push column 9, and the end of the bent plate 16 away from the clamping block 18 is rotatably connected with the third convex groove 15, which further enhances the overall stability and clamping force of the clamp, improves the applicability and clamping effect of the clamp, ensures the stability and precision of the valve cover 4 in the welding process, and thus further improves the quality and efficiency of the machining of the flat gate valve cover 4.

[0030] The working principle of the embodiment is as follows:

[0031] In use, first, the valve cover 4 is placed on the placing plate 1, and then the hydraulic push column 12 is started. The telescopic end of the hydraulic push column 12 pushes the pull sleeve 11 to move, and the push plates 10 in the pull sleeve 11 rotate accordingly. One of the push plates 10 is rotatably connected with the groove 7, so that the first ring plate 6 is subjected to a pushing force and slides upward along the slide column 5. The other push plate 10 is rotatably connected with the second convex groove 14 and pushes the second ring plate 13 to slide downward along the slide column 5. Such a design enables the self-adaptive clamp to be self-adapted and adjusted according to the size of the valve cover 4, so as to ensure that the clamp can tightly clamp the valve cover 4.

[0032] With the movement of the first ring plate 6 and the second ring plate 13, the push column 9 slides in the sliding groove 17, and the bent plate 16 slides in the slot 3, so that the clamping block 18 can tightly fit the surface of the valve cover 4. The clamping block 18 is rotatably connected and can adapt to the curved surface or flat structure of the valve cover 4, so as to ensure the stability and reliability of the clamp in the clamping process.

[0033] After the clamping is completed, welding work can be performed. After welding is completed, the hydraulic push column 12 moves reversely, the pull sleeve 11 drives the push plates 10 to return to the original position, the first ring plate 6 and the second ring plate 13 also return to the original position, the clamp releases the valve cover 4, and the whole machining process is completed.

[0034] The above merely describes preferred embodiments of the present application, and is not intended to limit the scope of protection of the present application.

Claims

1. A welding fixture for machining of a flat gate valve cover, comprising a placement plate (1), characterized in that: The bottom end of the placement plate (1) is fixedly connected with a mounting base (2), a plurality of slot (3) are arranged around the mounting base (2), the top end of the placement plate (1) is placed with a valve cover (4), the middle part of the mounting base (2) is fixedly connected with a slide column (5), the inner side of the mounting base (2) is provided with a self-adaptive clamp.

2. A welding fixture for machining a flat gate valve cover according to claim 1, characterized in that, The self-adaptive clamp comprises a first ring plate (6), the middle part of the first ring plate (6) is slidably connected with the upper half of the slide column (5), a plurality of first convex grooves (8) are fixedly connected around the surface of the first ring plate (6), a plurality of first convex grooves (8) are arranged in a circular array, and a push column (9) is fixedly connected to the inner side of the end of the first convex groove (8) away from the first ring plate (6).

3. A welding fixture for machining a flat gate valve cover according to claim 2, characterized in that, A plurality of recesses (7) are arranged around the first ring plate (6), a plurality of recesses (7) are arranged in a circular array, and the recesses (7) are located between a plurality of first convex grooves (8).

4. A welding fixture for machining a flat gate valve cover according to claim 1, characterized in that, The self-adaptive clamp comprises a second ring plate (13), the second ring plate (13) is slidably connected with the lower half of the slide column (5), a plurality of third convex grooves (15) are fixedly connected around the surface of the second ring plate (13), and the third convex grooves (15) are arranged in a circular array.

5. A welded fixture for machining a flat gate valve cover according to claim 4, characterized in that, A plurality of second convex grooves (14) are fixedly connected around the surface of the second ring plate (13), a plurality of second convex grooves (14) are arranged in a circular array, and a plurality of second convex grooves (14) are located between a plurality of third convex grooves (15).

6. A welded fixture for machining a flat gate valve cover according to claim 1, characterized in that, The surface of the mounting base (2) is fixedly connected with a hydraulic push column (12), the telescopic end of the hydraulic push column (12) is fixedly connected with a pull sleeve (11), the inner side of the pull sleeve (11) is rotatably connected with a push plate (10) at the upper and lower ends, one end of the push plate (10) away from the pull sleeve (11) is rotatably connected with the recess (7), and the other end of the push plate (10) away from the pull sleeve (11) is rotatably connected with the second convex groove (14).

7. A welding fixture for machining a flat gate valve cover according to claim 1, characterized in that, The inner side of the slot (3) is slidably connected with a bent plate (16), the top end of the bent plate (16) is rotatably connected with a clamping block (18), the clamping block (18) is slidably attached to the valve cover (4), the middle part of the bent plate (16) is provided with a sliding groove (17), the inner side of the sliding groove (17) is slidably connected with the push column (9), and the end of the bent plate (16) away from the clamping block (18) is rotatably connected with the third convex groove (15).

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