A sealing clamping mechanism and a self-centering valve detection device

Abstract

The utility model relates to valve detection technical field, concretely relates to a sealing clamping mechanism and from finding the valve detection device of heart, including drive mechanism and clamping piece, and clamping piece installs drive mechanism through installation assembly, clamping piece includes main part and sets up the pushed part of one end of main part near telescopic part, and pushed part is used for bearing the thrust of drive mechanism, and the contact between pushed part and telescopic part is point contact. The assembly mode of point contact between pushed part and telescopic part eliminates the constraint of telescopic part to clamping piece, makes clamping piece be only installed assembly constraint, can ensure the effective transmission of huge axial clamping force of clamping piece while resolving the over -constraint problem due to the machining error, realizes smooth, efficient assembly, and guarantees the reliability of long -term operation of equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of sealing clamping mechanisms, specifically to a sealing clamping mechanism and a self-centering valve detection device. Background Technology

[0002] In the field of automated valve seal testing, a cylinder-driven sealing clamp is typically used to perform the testing task. The front end of this sealing clamp is conical or has a sealing ring structure to insert into and seal the valve interface; its rear end needs to be connected to the piston rod of the cylinder to withstand the huge axial thrust output by the cylinder and ensure the reliability of the seal.

[0003] Because the clamping force required for valve seal testing is very large, the current mainstream design approach is to allow the sealing clamping component itself to directly bear most or even all of the axial clamping force. This design aims to avoid the force being entirely borne by the connecting parts (such as threaded joints, flanges, etc.) between it and the cylinder, thereby preventing the connecting parts from being damaged due to long-term exposure to large loads and improving the overall rigidity and durability of the system.

[0004] However, this "body-borne force" design concept has led to a significant assembly and operational hazard in practice—the sealing clamp is excessively constrained in space. Specifically, in order to achieve power transmission and fixation, the sealing clamp needs to meet two constraints simultaneously: first, its tail end needs to be tightly fitted with the end of the cylinder's piston rod to withstand the thrust; second, its side or tail end usually needs to be connected to the cylinder or a fixed bracket via screws, pins, or other connecting parts to determine its radial position and prevent it from rotating or falling off.

[0005] This dual-constraint architecture places extremely high demands on the machining precision of components and the assembly process. In actual manufacturing, minor machining errors and cumulative tolerances are unavoidable on the cylinder mounting surface, piston rod axis, and mounting hole positions of connecting parts. During assembly, these errors cause the sealing clamping component to be simultaneously "pulled" or "compressed" in different directions by the cylinder and connecting parts, thus generating assembly stress. This can lead to difficulties in assembling parts, requiring repeated adjustments; or even prevent the connecting parts from being installed smoothly, or even cause slight bending deformation of the sealing clamping component or cylinder piston rod, affecting its smoothness of movement and service life. Utility Model Content

[0006] 1. The problem to be solved To address the problem of excessive constraint on sealing clamping components in space, leading to assembly difficulties in existing technologies, this utility model provides a sealing clamping mechanism and a self-centering valve detection device, resolving the problem of excessive constraint on sealing clamping components caused by processing errors.

[0007] 2. Technical Solution To solve the above problems, the technical solution adopted by this utility model is as follows: This utility model provides a sealing clamping mechanism, including a driving mechanism and a clamping member, wherein the clamping member is mounted on the telescopic part of the driving mechanism via a mounting assembly; The clamping member includes a main body and a push-receiving part disposed at one end of the main body near the telescopic part. The push-receiving part is used to bear the thrust of the drive mechanism, and the contact between the push-receiving part and the telescopic part is a point contact.

[0008] As a preferred embodiment of this utility model, the telescopic part of the drive mechanism is provided with a horizontal sliding position, the mounting component slides linearly with the horizontal sliding position, and when the telescopic part contacts the clamping member, the mounting component does not contact the end of the horizontal sliding position away from the clamping member, so that the clamping member bears the thrust of the drive mechanism.

[0009] As a preferred embodiment of this utility model, a limiting member is also connected to the telescopic part. The limiting member is located on the side of the horizontal sliding part close to the clamping member, so that when the telescopic part retracts, it can drive the clamping member away from the valve.

[0010] The second aspect of this utility model provides a self-centering valve testing device, including a valve fixing seat for installing the valve and the aforementioned sealing clamping mechanism, wherein the valve fixing seat is provided with a testing through hole for inserting the clamping component.

[0011] As a preferred embodiment of this utility model, the main body of the clamping member is mounted on the telescopic part of the drive mechanism via a mounting assembly; A calibration part is fixedly arranged around the outer peripheral wall of the main body. The calibration part is adapted to the detection through hole and is used to calibrate the position of the main body in the vertical direction when the main body is inserted into the detection through hole in the direction of clamping the valve.

[0012] As a preferred embodiment of this utility model, the calibration part is provided with a slope, and the slope gradually moves away from the main body in the direction close to the drive mechanism.

[0013] As a preferred embodiment of the present invention, the clamping member further includes a first fixing plate fixedly disposed on the main body, and the first fixing plate is provided with at least two insertion holes; The installation components include: The second fixing plate is sleeved on the horizontal sliding position of the telescopic part and can slide linearly along the horizontal sliding position. It is provided with threaded holes equal to the number of insertion holes. The number of connecting rods is equal to the number of insertion holes; one end of each connecting rod is threaded to the threaded hole, and the other end passes through the insertion hole, with a movable gap between the inner circumferential wall of the insertion hole and the connecting rod. Nuts are used to constrain the first fixing plate. Two nuts are provided on each connecting rod, and the first fixing plate is located between the two nuts.

[0014] As a preferred embodiment of this utility model, the valve fixing seat includes an outer mounting box and a slider seat mounted on the outer mounting box. The slider seat penetrates the side wall of the outer mounting box, and a detection through hole is provided on the slider seat. Furthermore, the hardness of both the slider seat and the clamping member is greater than the hardness of the outer mounting box.

[0015] As a preferred embodiment of this utility model, the slider seat and the clamping member are made of steel, and the outer mounting box is made of aluminum.

[0016] 3. Beneficial effects Compared with the prior art, the beneficial effects of this utility model are as follows: (1) In this utility model, the clamping component includes a main body and a push-receiving part disposed at one end of the main body near the telescopic part. The contact between the push-receiving part and the telescopic part is a point contact. The point contact assembly method between the push-receiving part and the telescopic part eliminates the constraint of the telescopic part on the clamping component, so that the clamping component is only constrained by the mounting component. This can ensure that the clamping component can effectively transmit huge axial clamping force while resolving the problem of excessive constraint caused by machining errors, achieving smooth and efficient assembly, and ensuring the reliability of long-term operation of the equipment.

[0017] (2) In this utility model, the telescopic part is provided with a horizontal sliding position, and the mounting component slides in a straight line with the horizontal sliding position, so that the mounting component and the telescopic part can slide relative to each other, ensuring that the main body bears the thrust of the drive mechanism. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the valve detection device in this utility model; Figure 2 This is a split diagram of the sealing clamping mechanism in this utility model; Figure 3 This is a schematic diagram of the valve fixing seat in this utility model; Figure 4 This is a cross-sectional schematic diagram of the valve fixing seat and clamping component in this utility model; Figure 5 for Figure 4 A schematic diagram of the structure of the calibration section.

[0019] Explanation of the labels in the diagram: 100. Drive mechanism; 110. Telescopic part; 120. Horizontal sliding part; 130. Limiting component; 200 Clamping component; 210 Main body; 220 Push-receiving part; 230 Alignment part; 231 Slope; 240 First fixing plate; 241 Insertion hole; 300. Mounting component; 310. Second fixing plate; 320. Connecting rod; 330. Playing clearance; 340. Nut; 400. Valves; 500. Valve mounting seat; 510. Inspection through hole; 520. External mounting box; 530. Slider seat. Detailed Implementation

[0020] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0021] The structures, proportions, and sizes illustrated in the accompanying drawings are solely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0022] Example 1 like Figure 1 and Figure 2 The embodiment shown provides a sealing clamping mechanism, including a drive mechanism 100 and a clamping member 200. The drive mechanism 100 can be configured as a cylinder, which includes a body and a telescopic part 110. The clamping member 200 is mounted on the telescopic part 110 of the drive mechanism 100 via a mounting assembly 300.

[0023] The clamping member 200 comprises a main body 210 and a push-receiving part 220 disposed at one end of the main body 210 near the telescopic part 110. The push-receiving part 220 is used to bear the thrust of the drive mechanism 100, and the contact between the push-receiving part 220 and the telescopic part 110 is point contact. This point contact assembly method between the push-receiving part 220 and the telescopic part 110 eliminates the constraint of the telescopic part 110 on the clamping member 200, so that the clamping member 200 is only constrained by the mounting assembly 300. This ensures that the clamping member 200 can effectively transmit huge axial clamping forces while resolving the problem of excessive constraint caused by machining errors, achieving smooth and efficient assembly, and ensuring the long-term reliability of the equipment.

[0024] Preferably, the push-receiving part 220 is integrally formed with the main body part 210, the surface of the push-receiving part 220 that contacts the telescopic part 110 is a spherical surface, and the end face of the telescopic part 110 is a plane.

[0025] In one embodiment, the telescopic portion 110 is provided with a horizontal sliding position 120. The mounting component 300 slides linearly with the horizontal sliding position 120, allowing the mounting component 300 and the telescopic portion 110 to slide relative to each other. When the telescopic portion 110 contacts the main body 210, the mounting component 300 does not contact the end of the horizontal sliding position 120 away from the clamping member 200. That is, when the telescopic portion 110 pushes the clamping member 200, the telescopic portion 110 gradually approaches the main body 210, and the mounting component 300 slides relatively backward on the horizontal sliding position 120. Before the mounting component 300 reaches the rear end of the horizontal sliding position 120, the telescopic portion 110 first abuts against the main body 210, pushing the clamping member 200 to move, ensuring that the main body 210 bears the thrust of the drive mechanism 100. The main body 210 has a simple structure and high structural stability, and can more stably bear the strong clamping force applied by the drive mechanism 100.

[0026] In one embodiment, a limiting member 130 is also connected to the telescopic part 110. The limiting member 130 is located on the side of the horizontal sliding part 120 close to the clamping member 200. On the one hand, it prevents the mounting component 300 from disengaging from the telescopic part 110 when it retracts. On the other hand, it allows the mounting component 300 to be pulled backward by the limiting member 130 when the telescopic part 110 retracts, thereby moving the clamping member 200 away from the valve 400.

[0027] Preferably, the limiting member 130 is threaded onto the telescopic part 110 to facilitate the installation and removal of the mounting assembly 300 on the telescopic part 110.

[0028] Example 2 like Figures 1-5 As shown, this embodiment provides a self-centering valve testing device, including a valve mounting base 500 for mounting a valve 400 and a sealing clamping mechanism as described in Embodiment 1. The valve mounting base 500 is provided with a testing through hole 510 for inserting a clamping member 200. When testing the valve 400, the valve 400 is first placed on the valve mounting base 500, and then the driving mechanism 100 drives the clamping member 200 through the testing through hole 510 to clamp and fix the valve interface. It should be noted that the number and position of the testing through holes 510 are adapted to the position and number of the valve 400 interfaces.

[0029] In one embodiment, the main body 210 of the clamping member 200 is mounted on the telescopic part 110 of the drive mechanism 100 via the mounting assembly 300, and an movable gap 330 is provided between the main body 210 and the mounting assembly 300, so that the clamping member 200 can produce a small amplitude of wobbling relative to the mounting assembly 300, so that the main body 210 can move in the vertical plane, providing a basis for the clamping member 200 to self-center in the vertical plane.

[0030] A calibration section 230 is fixedly arranged around the outer peripheral wall of the main body 210. The calibration section 230 is adapted to the detection through hole 510. The outer diameter of the calibration section 230 is equal to the inner diameter of the detection through hole 510. It is used to calibrate the position of the main body 210 in the vertical direction. Specifically, the calibration section 230 is ring-shaped and integrally formed with the main body 210. The calibration section 230 is provided with a slope 231, and the slope 231 gradually moves away from the main body 210 in the direction close to the drive mechanism 100.

[0031] The specific calibration principle of the main body 210 is as follows: When the extension part 110 of the drive mechanism 100 drives the clamping member 200 into the detection through hole 510, if the clamping member 200 is slightly deviated from the center position of the detection through hole 510 due to installation errors or other reasons, the slope 231 of the calibration part 230 will abut against the entrance end of the detection through hole 510 when entering the detection through hole 510, which plays a guiding role and adjusts the position of the clamping member 200 in the vertical plane so that the clamping member 200 can smoothly enter the detection through hole 510.

[0032] In one embodiment, the calibration part 230 is configured as a triangular pyramid. When the calibration part 230 is located inside the detection through hole 510, the tip of the triangular pyramid faces the inner wall of the detection through hole 510, and the tip is rounded to form an arc-shaped surface.

[0033] This embodiment also provides an implementation in which the clamping member 200 can wobble slightly in a vertical plane relative to the mounting assembly 300, and the telescopic part 110 can slide relative to the mounting assembly 300 in the front-to-back direction. The clamping member 200 also includes a first fixing plate 240 fixedly disposed on the main body 210, and the first fixing plate 240 is provided with at least two insertion holes 241-; preferably, the first fixing plate 240 is symmetrically disposed on both sides of the main body 210 and integrally formed with the main body 210.

[0034] Installation component 300 includes: The second fixing plate 310 is sleeved on the horizontal sliding position 120 of the telescopic part 110 and can slide linearly along the horizontal sliding position 120. Specifically, the telescopic part 110 has symmetrical sliding planes on both sides of its cylindrical body, and the second fixing plate 310 has through holes that match its shape. When the second fixing plate 310 is sleeved on the telescopic part 110, it can slide back and forth without rotating. The second fixing plate 310 also has threaded holes equal in number to the insertion holes 241. The number of connecting rods 320 is equal to the number of insertion holes 241. One end of each connecting rod 320 is threaded into a threaded hole, and the other end passes through an insertion hole 241 on the first fixing member. There is a play gap 330 between the inner peripheral wall of the insertion hole 241 and the connecting rod 320, that is, the diameter of the insertion hole 241 is larger than the diameter of the connecting rod 320. For example, the insertion hole 241 can be set as an oblong hole, so that the clamping member 200 can produce a small range of movement in the vertical plane. At the same time, excessive constraints are avoided during assembly.

[0035] Nuts 340 are used to constrain the position of the first fixing plate 240 in the horizontal direction. Two nuts 340 are provided on each connecting rod 320. The first fixing plate 240 is located between the two nuts 340, so that the first fixing plate 240 can only move slightly in the vertical plane.

[0036] In one embodiment, the valve fixing seat 500 includes a slider seat 530 mounted on an outer mounting box 520 and mounted on the outer mounting box 520. The slider seat 530 penetrates the side wall of the outer mounting box 520, and a detection through hole 510 is provided on the slider seat 530. The hardness of both the slider seat 530 and the clamping member 200 is greater than the hardness of the outer mounting box 520. Preferably, the slider seat 530 and the clamping member 200 are made of steel, while the outer mounting box 520 is made of aluminum. This saves costs and prevents the valve fixing seat 500 from generating aluminum shavings due to friction with the clamping member 200.

[0037] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A sealing clamping mechanism, comprising a drive mechanism (100) and a clamping member (200), wherein the clamping member (200) is mounted on the telescopic portion (110) of the drive mechanism (100) via a mounting assembly (300); Its features are: The clamping member (200) includes a main body (210) and a push-receiving part (220) disposed at one end of the main body (210) near the telescopic part (110). The push-receiving part (220) is used to bear the thrust of the drive mechanism (100), and the contact between the push-receiving part (220) and the telescopic part (110) is a point contact.

2. The sealing clamping mechanism according to claim 1, characterized in that: A horizontal sliding position (120) is provided on the telescopic part (110) of the drive mechanism (100). The mounting component (300) slides linearly with the horizontal sliding position (120). When the telescopic part (110) contacts the clamping member (200), the mounting component (300) does not contact the end of the horizontal sliding position (120) away from the clamping member (200), so that the clamping member (200) bears the thrust of the drive mechanism (100).

3. The sealing clamping mechanism according to claim 2, characterized in that: The telescopic part (110) is also connected to a limiting member (130), which is located on the side of the horizontal sliding part (120) close to the clamping member (200) so that when the telescopic part (110) retracts, it can drive the clamping member (200) away from the valve (400).

4. A valve detection device with self-finding mechanism, characterized in that: It includes a valve mounting base (500) for mounting a valve (400) and a sealing clamping mechanism as described in any one of claims 1-3, wherein the valve mounting base (500) is provided with a detection through hole (510) for inserting a clamping member (200).

5. The self-centering valve detection device according to claim 4, characterized in that: The main body (210) of the clamping member (200) is mounted on the telescopic part (110) of the drive mechanism (100) via the mounting assembly (300); A calibration part (230) is fixedly arranged around the outer peripheral wall of the main body (210). The calibration part (230) is adapted to the detection through hole (510) and is used to calibrate the position of the main body (210) in the vertical direction when the main body (210) is inserted into the detection through hole (510) in the direction of clamping valve (400).

6. The self-centering valve detection device according to claim 5, characterized in that: The calibration section (230) is provided with a slope (231), and the slope (231) gradually moves away from the main body (210) in the direction close to the drive mechanism (100).

7. The self-centering valve detection device according to claim 5, characterized in that: The clamping member (200) also includes a first fixing plate (240) fixedly disposed on the main body (210), and the first fixing plate (240) is provided with at least two insertion holes (241). The installation components (300) include: The second fixing plate (310) is sleeved on the horizontal sliding position (120) of the telescopic part (110) and can slide linearly along the horizontal sliding position (120). It has a number of threaded holes equal to the number of insertion holes (241). The number of connecting rods (320) is equal to the number of insertion holes (241); one end of each connecting rod (320) is threaded to a threaded hole, and the other end passes through the insertion hole (241), and there is a movable gap (330) between the inner peripheral wall of the insertion hole (241) and the connecting rod (320). Nuts (340) are used to constrain the first fixing plate (240). Two nuts (340) are provided on each connecting rod (320), and the first fixing plate (240) is located between the two nuts (340).

8. The self-centering valve detection device according to claim 4, characterized in that: The valve mounting base (500) includes a slider seat (530) on the outer mounting box (520) and mounted on the outer mounting box (520). The slider seat (530) penetrates the side wall of the outer mounting box (520). The detection through hole (510) is provided on the slider seat (530). The hardness of both the slider seat (530) and the clamping member (200) is greater than the hardness of the outer mounting box (520).

9. The self-centering valve detection device according to claim 8, characterized in that: The slider base (530) and the clamping part (200) are made of steel, while the outer mounting box (520) is made of aluminum.

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