Clamp for automatic surfacing of sealing surface of wedge gate valve

Abstract

This utility model discloses an automated welding fixture for the sealing surface of a wedge gate valve, comprising a hand-cranked stud, a support base, a correction disc, a leveling seat, a nut, and a bearing. The support base is fixedly installed on one side of the correction disc, and the leveling seat is disposed on the upper part of the correction disc. The hand-cranked stud is rotatably mounted on the support base. A through hole is provided on one side of the front of the leveling seat, and the end of the hand-cranked stud passes through the through hole in the leveling seat. The nut and bearing are disposed on the hand-cranked stud and symmetrically distributed on both sides of the through hole in the leveling seat. This utility model corrects the concentricity of the sealing surface by moving the leveling seat left and right, and levels the sealing surface of the wedge gate valve, thereby realizing automated welding of the sealing surface and greatly improving the welding quality and production efficiency of the wedge gate valve sealing surface.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, specifically a fixture for automated overlay welding of the sealing surface of a wedge gate valve. Background Technology

[0002] The mechanization and automation of welding processes represent a significant advancement in modern welding technology. This not only signifies higher welding production efficiency and better welding quality but also greatly improves working conditions. Plasma arc powder cladding, due to its advantages such as fast cladding speed, low dilution rate, high bonding strength, and good stability, is widely used in the plasma arc cladding of valve sealing surfaces. In the automated cladding of wedge gate valves, because the sealing surface has an angle, a reliable fixture is needed to level, lock, and position the workpiece. Therefore, an automated welding fixture is required. Utility Model Content

[0003] The purpose of this invention is to provide a fixture for automated welding of the sealing surface of a wedge gate valve, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A fixture for automated welding of the sealing surface of a wedge gate valve includes a hand-cranked stud, a support base, a straightening disc, a leveling seat, a nut, and a bearing. The support base is fixedly installed on one side of the straightening disc, and the leveling seat is located on the upper part of the straightening disc. The hand-cranked stud is rotatably installed on the support base. A through hole is provided on one side of the front of the leveling seat, and the end of the hand-cranked stud passes through the through hole provided on the leveling seat. The nut and the bearing are provided on the hand-cranked stud and are symmetrically distributed on both sides of the through hole provided on the leveling seat.

[0006] Furthermore, a long keyway for the calibration disk is provided on one side plane, and a T-shaped groove is also provided.

[0007] Furthermore, the front of the leveling seat is provided with an inclined surface, and a countersunk hole is provided on the inclined surface; a long keyway for the leveling seat is provided on the back of the leveling seat.

[0008] Furthermore, a T-shaped nut is placed in the T-slot.

[0009] Furthermore, a screw is placed inside the countersunk hole.

[0010] Compared with existing technologies, the beneficial effects of this utility model are:

[0011] This invention can level the sealing surface of a wedge gate valve using a leveling seat. By moving the leveling seat left and right on the correction plate, the concentricity of the sealing surface of the wedge gate valve is corrected, thereby realizing automated welding of the sealing surface of the wedge gate valve. It is applicable to the positioning and locking of various specifications of the same type of products, thereby improving the welding quality and production efficiency of the welded parts. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the front structure of the calibration disc of this utility model.

[0014] Figure 3 This is a schematic diagram of the side structure of the calibration disc of this utility model.

[0015] Figure 4 This is a schematic diagram of the top surface structure of the leveling seat of this utility model.

[0016] Figure 5 This is a schematic diagram of the front structure of the leveling seat of this utility model.

[0017] In the diagram: 1-hand-cranked stud; 2-support base; 3-correction disc; 4-leveling base; 5-nut; 6-bearing; 7-correction disc long keyway; 8-T-slot; 9-leveling base long keyway; 10-counterhead; 11-bevel; 12-through hole. Detailed Implementation

[0018] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0019] Please see Figure 1-5 A fixture for automated welding of the sealing surface of a wedge gate valve is characterized by comprising a hand-cranked stud 1, a support base 2, a straightening disc 3, a leveling seat 4, a nut 5, and a bearing 6. The support base 2 is fixedly installed on one side of the straightening disc 3. The leveling seat 4 is disposed on the upper part of the straightening disc 3, and the hand-cranked stud 1 is rotatably mounted on the support base 2. A through hole 12 is provided on one side of the front of the leveling seat 4, and the end of the hand-cranked stud 1 passes through the through hole 12 on the leveling seat. The nut 5 and the bearing 6 are disposed on the hand-cranked stud 1 and symmetrically distributed on both sides of the through hole 12 on the leveling seat 4. A long keyway 7 and a T-slot 8 are provided on one side plane of the straightening disc 3. An inclined surface 11 is provided on the front of the leveling seat 4, and a countersunk hole 10 is provided on the inclined surface 11. A long keyway 9 is provided on the back of the leveling seat 4.

[0020] Before welding, first fix the straightening disc 3 on the bottom rotating mechanism, then install the set of fixtures in sequence, and place the wedge gate valve on the leveling seat 4. The sealing surface of the wedge gate valve is leveled by the leveling seat 4. The specific leveling method is as follows: if the inclination angle between the sealing surface of the wedge gate valve and the vertical center line of the valve plate is θ, then set the inclination angle of the leveling seat 4 to 2θ. At this time, after placing the wedge gate valve on the inclination surface of the leveling seat 4, the sealing surface of the wedge gate valve will be in the horizontal direction. Therefore, the sealing surface can be leveled by setting an inclination on the leveling seat 4. The calibration disc 3 is equipped with a long keyway 7. A flat key is placed in the long keyway, and the long keyway 9 of the leveling seat 4 is aligned with the flat key. The leveling seat 4 is then pushed onto the calibration disc 3. At this time, the leveling seat 4 can only move left and right on the calibration disc 3. A dial indicator is then used to correct the concentricity of the sealing surface. After correction, the screw placed in the countersunk hole 10 on the inclined surface of the leveling seat 4 is tightened to complete the positioning and locking of the wedge gate valve. This achieves automated welding of the sealing surface of the wedge gate valve, which is applicable to the positioning and locking of various specifications of the same type, improving the welding quality and production efficiency of the welded parts.

[0021] The embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A fixture for automated overlay welding of the sealing surface of a wedge gate valve, characterized in that: It includes a hand-cranked stud (1), a support base (2), a correction plate (3), a leveling base (4), a nut (5), and a bearing (6); the support base (2) is fixedly installed on one side of the correction plate (3), the leveling base (4) is set on the upper part of the correction plate (3), the hand-cranked stud (1) is rotatably installed on the support base (2), a through hole (12) is provided on one side of the front of the leveling base (4), the end of the hand-cranked stud (1) passes through the through hole (12) provided on the leveling base, and the nut (5) and bearing (6) are set on the hand-cranked stud (1) and symmetrically distributed on both sides of the through hole (12) provided on the leveling base.

2. The fixture for automated overlay welding of the sealing surface of a wedge gate valve according to claim 1, characterized in that: The calibration disk (3) has a calibration disk key (7) on one side plane and a T-slot (8).

3. A fixture for automated overlay welding of the sealing surface of a wedge gate valve according to claim 1 or 2, characterized in that: The leveling seat (4) has a slope (11) on its front side and a countersunk hole (10) on the slope (11). The leveling seat (4) also has a long keyway (9) on its back side.

4. The fixture for automated overlay welding of the sealing surface of a wedge gate valve according to claim 2, characterized in that: A T-nut is placed in the T-slot (8).

5. A fixture for automated overlay welding of the sealing surface of a wedge gate valve according to claim 3, characterized in that: A screw is placed inside the countersunk hole (10).

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