Clamping mechanism of safety valve testing device

Abstract

The utility model discloses a clamping mechanism of a safety valve testing device, which relates to the technical field of safety valves and comprises a supporting table, a circular placing frame is fixedly connected to the top of the supporting table, a plurality of clamping jaws are arranged on the top of the circular placing frame, a supporting disc is arranged in the circular placing frame, and a connecting rotary drum is rotatably connected to the top of the supporting disc. A driving structure is arranged on the outer side of the connecting rotary drum, a rotary disc is fixedly connected to the top of the connecting rotary drum, push rods are arranged on the outer sides of the multiple clamping jaws, and hinge seats are rotationally connected to the two ends of each push rod. The outer gear ring drives the rotating disc to rotate through the connecting rotating cylinder, the rotating disc can synchronously adjust the positions of the clamping jaws through cooperation of a plurality of hinge bases and a plurality of push rods so as to adapt to safety valves of various sizes, the positions of the clamping jaws do not need to be manually adjusted one by one by personnel, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of safety valve technology, specifically to the clamping mechanism of a safety valve testing device. Background Technology

[0002] Safety valves are crucial safety protection devices in industrial equipment. Their performance directly affects the safe operation of the equipment. Their main function is to automatically open when the pressure of the medium within the equipment or pipeline exceeds a specified value, thereby preventing the pressure from exceeding the prescribed level by discharging the medium outside the system. Safety valves belong to the category of automatic valves and are mainly used in boilers, pressure vessels, and pipelines to control pressure and ensure it does not exceed specified values, playing a vital role in protecting personal safety and equipment operation.

[0003] In the existing technology, clamping machines are often used when periodically inspecting and testing safety valves. However, the clamping method for safety valves usually involves multiple jaws. When clamping a safety valve, personnel need to manually slide the positions of multiple jaws one by one to adapt to safety valves of different sizes. This operation is not convenient and reduces the practicality of the device. Utility Model Content

[0004] The purpose of this invention is to provide a clamping mechanism for a safety valve testing device, in order to solve the problem in the prior art that when clamping a safety valve, personnel need to manually slide the positions of multiple clamps one by one to adapt to safety valves of different sizes, which is not convenient to operate.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamping mechanism for a safety valve testing device, including a support platform, a circular placement frame fixedly connected to the top of the support platform, multiple grippers on the top of the circular placement frame, a support plate inside the circular placement frame, a connecting cylinder rotatably connected to the top of the support plate, a driving structure on the outside of the connecting cylinder, a rotating disk fixedly connected to the top of the connecting cylinder, push rods on the outside of the multiple grippers, hinge seats rotatably connected to both ends of the push rods, two hinge seats being fixedly connected to the grippers and the rotating disk respectively, multiple convex grooves on the top of the support plate, convex sliders slidably disposed inside the convex grooves, the convex sliders being fixedly connected to the bottom of the grippers, and a hydraulic structure at the bottom of the support plate. The arrangement of multiple convex grooves and multiple convex sliders can improve the stability of the movement of the multiple grippers.

[0006] Preferably, the top of the support platform is provided with a pressure tube head, the top of which passes through the inner top of the circular placement frame and is fixedly connected to the circular placement frame.

[0007] Preferably, the circular placement frame has multiple sliding grooves on its top, and the bottom ends of the multiple grippers pass through the multiple sliding grooves and extend into the interior of the circular placement frame. The outer side of the circular placement frame has multiple heat dissipation holes to facilitate heat dissipation of the drive motor.

[0008] Preferably, the drive structure includes an external gear ring, which is fixedly connected to the outside of the connecting drum. A gear is meshed with the outside of the external gear ring, and a drive motor is provided at the bottom of the gear. The output end of the drive motor is fixedly connected to the gear.

[0009] Preferably, the drive structure further includes a fixing plate, which is fixedly connected to the bottom of the drive motor and to the outside of the support plate. The fixing plate provides a fixed support for the drive motor.

[0010] Preferably, the hydraulic structure includes multiple hydraulic cylinders, all of which are fixedly connected to the bottom of the support plate, are arranged in a ring around the support plate, and have their bottom ends fixedly connected to the top of the support platform.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This application drives the gear to rotate through the output end of the drive motor. The gear meshes with the external gear ring. The external gear ring drives the rotating disk to rotate through the connecting drum. The rotating disk can synchronously adjust the position of the gripper through the cooperation of multiple hinge seats and multiple push rods to adapt to safety valves of various sizes. There is no need for personnel to manually adjust the position of each gripper, which improves the practicality of the device.

[0013] 2. This application activates multiple hydraulic cylinders, which drive the support plate to move downwards. The support plate, through the setting of multiple convex sliding grooves, can pull multiple grippers downwards. At the same time, the support plate drives the rotating plate and multiple push rods to move downwards synchronously through the connecting rotating cylinder. Therefore, the downward position of multiple grippers can be adjusted, and the flange on the safety valve can be clamped onto the circular placement frame through multiple grippers. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the clamping mechanism of the safety valve testing device of this utility model;

[0015] Figure 2 This is a cross-sectional view of the circular mounting frame of the clamping mechanism of the safety valve testing device of this utility model;

[0016] Figure 3 This is a schematic diagram of the connecting rotary drum structure of the clamping mechanism of the safety valve testing device of this utility model;

[0017] Figure 4This is a schematic diagram of the convex slider structure of the clamping mechanism of the safety valve testing device of this utility model.

[0018] The following are the labels in the diagram: 1. Support platform; 2. Circular placement rack; 200. Sliding groove; 201. Heat dissipation hole; 3. Pressure pipe head; 4. Support plate; 400. Convex sliding groove; 5. Hydraulic cylinder; 6. Connecting drum; 7. Rotary disk; 8. Gripper; 800. Convex slider; 9. Push rod; 900. Hinge seat; 10. External gear ring; 11. Gear; 12. Drive motor; 13. Fixing plate. Detailed Implementation

[0019] 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.

[0020] Example: Figure 1 - Figure 4 As shown, this utility model provides a clamping mechanism for a safety valve testing device, including a support platform 1. A circular mounting bracket 2 is fixedly connected to the top of the support platform 1. A pressure tube head 3 is provided on the top of the support platform 1. The top end of the pressure tube head 3 passes through the inner top of the circular mounting bracket 2 and is fixedly connected to the circular mounting bracket 2. The top of the circular mounting bracket 2 is provided with multiple grippers 8. The top of the circular mounting bracket 2 is provided with multiple sliding grooves 200. The bottom ends of the multiple grippers 8 pass through the multiple sliding grooves 200 and extend into the interior of the circular mounting bracket 2. The outer side of the circular mounting bracket 2 is provided with multiple heat dissipation holes 201. The placement rack 2 has a support plate 4 inside, and a connecting cylinder 6 is rotatably connected to the top of the support plate 4. A drive structure is provided on the outside of the connecting cylinder 6, and a rotating disk 7 is fixedly connected to the top of the connecting cylinder 6. Push rods 9 are provided on the outside of multiple grippers 8. Hinges 900 are rotatably connected to both ends of the push rods 9. The two hinges 900 are fixedly connected to the grippers 8 and the rotating disk 7 respectively. Multiple convex grooves 400 are opened on the top of the support plate 4. Convex sliders 800 are slidably arranged inside the convex grooves 400. The convex sliders 800 are fixedly connected to the bottom of the grippers 8. A hydraulic structure is provided at the bottom of the support plate 4.

[0021] The drive structure includes an external gear ring 10, which is fixedly connected to the outside of the connecting drum 6. A gear 11 is meshed with the outside of the external gear ring 10. A drive motor 12 is provided at the bottom of the gear 11. The output end of the drive motor 12 is fixedly connected to the gear 11. The drive structure also includes a fixing plate 13, which is fixedly connected to the bottom of the drive motor 12 and to the outside of the support plate 4.

[0022] Specifically, the safety valve is placed on top of the circular mounting bracket 2. A sealing gasket can be placed between the safety valve and the circular mounting bracket 2 to improve the sealing effect. Then, the drive motor 12 is started. The model of the drive motor 12 is not specifically limited, but depends on the compatible equipment. The output end of the drive motor 12 drives the gear 11 to rotate. The gear 11 meshes with the outer gear ring 10. The outer gear ring 10 drives the rotating disk 7 to rotate through the connecting rotating cylinder 6. The rotating disk 7 can synchronously adjust the position of the gripper 8 through the cooperation of multiple hinge seats 900 and multiple push rods 9, so as to adapt to safety valves of various sizes. There is no need for personnel to manually adjust the position of each gripper 8, which improves the practicality of the device.

[0023] The pressure tube head 3 in this application is existing technology, and will not be described in detail.

[0024] Example: Figure 2 - Figure 3 As shown, the hydraulic structure includes multiple hydraulic cylinders 5, which are all fixedly connected to the bottom of the support plate 4. The multiple hydraulic cylinders 5 are arranged in a ring around the support plate 4, and the bottom ends of the multiple hydraulic cylinders 5 are all fixedly connected to the top of the support platform 1.

[0025] Specifically, after the positions of the multiple grippers 8 are adjusted, multiple hydraulic cylinders 5 are activated. The multiple hydraulic cylinders 5 drive the support plate 4 to move downward. The support plate 4, through the setting of multiple convex sliding grooves 400, can pull the multiple grippers 8 downward. At the same time, the support plate 4 drives the rotating plate 7 and multiple push rods 9 to move downward synchronously through the connecting rotating cylinder 6. Therefore, the downward position of the multiple grippers 8 can be adjusted, and the flange on the safety valve can be clamped onto the circular placement frame 2 by the multiple grippers 8.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A clamping mechanism for a safety valve testing apparatus, characterised in that: The utility model relates to a kind of support table and its hydraulic structure, including support table (1), the top of support table (1) is fixedly connected with circular placing rack (2), the top of circular placing rack (2) is equipped with multiple clamping jaws (8), the inside of circular placing rack (2) is equipped with support disc (4), the top of support disc (4) is rotatably connected with connecting rotary drum (6), the outside of connecting rotary drum (6) is equipped with drive structure, the top of connecting rotary drum (6) is fixedly connected with rotary disc (7), the outside of multiple clamping jaws (8) is equipped with push rod (9), the both ends of push rod (9) are rotatably connected with hinged seat (900), two hinged seats (900) are fixedly connected with clamping jaw (8) and rotary disc (7) respectively, the top of support disc (4) is equipped with multiple male sliding grooves (400), the inside of male sliding groove (400) is slidably provided with male sliding block (800), and the bottom end of male sliding block (800) is fixedly connected to clamping jaw (8), and the bottom of support disc (4) is equipped with hydraulic structure.

2. A clamping mechanism for a safety valve testing apparatus according to claim 1, characterised in that: The top of support table (1) is provided with a pressure pipe head (3), and the top end of the pressure pipe head (3) penetrates the inside top end of the circular placing rack (2) and is fixedly connected with the circular placing rack (2).

3. The clamping mechanism of a safety valve testing apparatus of claim 1, wherein: The top of the circular placing rack (2) is provided with a plurality of sliding grooves (200), and the bottom ends of the plurality of clamping jaws (8) penetrate the plurality of sliding grooves (200) and extend into the circular placing rack (2), and the outer side of the circular placing rack (2) is provided with a plurality of heat dissipation holes (201).

4. The clamping mechanism of a safety valve testing apparatus of claim 1, wherein: The drive structure includes an outer gear ring (10) fixedly connected to the outer side of the connecting rotary drum (6), a gear (11) meshingly connected to the outer side of the outer gear ring (10), and a drive motor (12) provided at the bottom of the gear (11) and fixedly connected to the output end of the gear (11).

5. A clamping mechanism for a safety valve testing apparatus according to claim 4, characterised in that: The drive structure further includes a fixed plate (13) fixedly connected to the bottom of the drive motor (12) and fixedly connected to the outer side of the support disc (4).

6. The clamping mechanism of a safety valve testing apparatus of claim 1, wherein: The hydraulic structure includes a plurality of hydraulic cylinders (5) fixedly connected to the bottom of the support disc (4), and the plurality of hydraulic cylinders (5) are annularly distributed around the support disc (4), and the bottom ends of the plurality of hydraulic cylinders (5) are fixedly connected to the top of the support table (1).

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