Tool for measuring perimeter of large-size sealing ring

Abstract

The utility model provides a tool for measuring the perimeter of a large-size sealing ring, which comprises a working rack, and six triangular supporting blocks and a central movable shaft rod which are arranged on the working rack, the central movable shaft rod can be inserted on the working rack in an up-down movable manner, and the six triangular supporting blocks are uniformly distributed in a surrounding manner by taking the central movable shaft rod as a center; the vertex angles of the triangular supporting blocks face outwards and are 120 degrees, and the vertex angle points of the six triangular supporting blocks can be sequentially connected to form a regular hexagon in a top view; the six triangular supporting blocks are movably arranged on the working rack through sliding sets respectively, a linkage rod body is rotationally arranged between each sliding set and the lower portion of the center movable shaft rod, and the six triangular supporting blocks can synchronously expand outwards or retract inwards under the action of the linkage rod bodies of the six triangular supporting blocks respectively. The six triangular supporting blocks, the center movable shaft rod, the sliding set and the linkage rod body form a telescopic regular hexagon synchronous contact structure, and synchronous external expansion of the six triangular supporting blocks is achieved.

Description

Technical Field

[0001] This utility model relates to the field of large-size sealing ring circumference measurement technology, specifically, it demonstrates a tool for measuring the circumference of large-size sealing rings. Background Technology

[0002] Large-size sealing rings are widely used in battery sealing, engine sealing, transmission sealing, and engineering machinery sealing, and are important sealing components; some large square sealing rings also belong to the category of large-size sealing rings. The main function of large-size sealing rings is to prevent foreign objects such as mud, water, dust, or acidic / alkaline environments from entering the sealing cavity, and to prevent oil or liquids from leaking out of the sealing cavity.

[0003] Large-sized sealing rings require random inspection during production. However, sealing rings are prone to deformation when subjected to force, making it difficult to roughly measure the inner diameter of the sealing ring and quickly determine whether the inner diameter of the sealing ring is within its upper and lower limits. Utility Model Content

[0004] The purpose of this invention is to provide a tool for measuring the circumference of large-size sealing rings. It has a simple and practical structure to solve the problem mentioned in the background art that it is difficult to quickly measure the inner diameter of sealing rings.

[0005] The technical solution is as follows:

[0006] A tool for measuring the circumference of large-size sealing rings includes a workbench and six triangular support blocks and a central movable shaft mounted on the workbench. The central movable shaft is vertically movably inserted into the workbench. The six triangular support blocks are evenly distributed around the central movable shaft, with the apex of each triangular support block facing outward at 120°. The apex points of the six triangular support blocks can be connected sequentially to form a regular hexagon in top view. Each of the six triangular support blocks is movably mounted on the workbench via a sliding assembly, and each sliding assembly is rotatably connected to the lower part of the central movable shaft via a linkage. Under the action of their respective linkages, the six triangular support blocks can perform synchronous outward expansion or synchronous inward contraction movements.

[0007] In addition, the above embodiments of this utility model may also have the following additional technical features:

[0008] According to one embodiment of this utility model, the top view of the triangular support block is an isosceles triangle, with the other two sides of the triangular support block both being 30°. The isosceles triangle design ensures that the contact point between the triangular support block and the inner wall of the sealing ring is always located at its apex, avoiding sliding offset caused by side-sloping contact and improving positioning accuracy.

[0009] According to one embodiment of this utility model, the sliding assembly includes a slide rail and a slider. The center of the central movable shaft and the apex point of one of the triangular support blocks are both located on the axis of the slide rail. The slide rail is embedded in the top surface of the workbench, and the slider is slidably inserted into the slide rail, with the slider protruding downwards from the workbench. This ensures that the linear motion path of the slider is consistent with the theoretical expansion or contraction direction of the triangular support block, avoiding radial deviation in the movement of the triangular support block.

[0010] In one embodiment, one end of the connecting rod is hinged to the lower part of the slider, and the other end of the connecting rod is hinged to the central movable shaft. The hinge structure converts the vertical movement of the central movable shaft into the radial movement of the slider. The hinge design allows the connecting rod to freely adjust its angle during movement, avoiding jamming caused by manufacturing tolerances or wear of parts, and ensuring synchronization.

[0011] In one embodiment, one end of the connecting rod hinged to the central movable shaft is on the same horizontal base plane, and the axis of the connecting rod is aligned with the axis of the slide rail. This collinear design of the connecting rod and the slide rail eliminates lateral forces, reduces frictional losses between the slider and the slide rail, improves smoothness of movement, and allows the connecting rod to exert a more direct force when pushing the slider.

[0012] According to one embodiment of this utility model, the bottom end of the triangular support block extends horizontally outward to form a blocking portion. The blocking portion can provide physical restraint, preventing the sealing ring from sliding out of the triangular support block area due to its own weight or external force during measurement. Moreover, the operator can visually align the bottom edge of the sealing ring through the blocking portion, shortening the calibration and installation time and improving the measurement efficiency of the sealing ring.

[0013] According to one embodiment of this utility model, the lower part of the workbench is provided with a drive cylinder for connecting to the bottom end of the central movable shaft, which drives the central movable shaft to move up and down. The drive cylinder provides a stable driving force, replacing manual operation and avoiding displacement errors of the triangular support block caused by uneven manual force application.

[0014] Compared with existing technologies, the advantages of this invention are as follows: This invention forms a retractable regular hexagonal synchronous contact structure through six triangular support blocks, a central movable shaft, a sliding assembly, and a connecting rod. The six triangular support blocks are distributed at equal angles, with the apex forming a regular hexagon, ensuring uniform force on the inner wall of the sealing ring and avoiding measurement errors caused by local deformation. Through the mechanical linkage between the connecting rod and the central movable shaft, the six triangular support blocks expand synchronously, eliminating the deviation of manual adjustment and significantly improving the consistency of sealing ring circumference measurement. The circumference of the regular hexagon can be directly derived from the length of one side × 6, simplifying the conversion of the inner diameter of large-size sealing rings. Attached Figure Description

[0015] Figure 1 This is a simplified top view of a tool for measuring the circumference of large-size sealing rings according to an embodiment of the present invention;

[0016] Figure 2 This is a simplified top view of an embodiment of the present invention showing the cooperation between the central movable shaft and the six triangular support blocks;

[0017] Figure 3 This is a simplified side view of an embodiment of the present invention showing the cooperation between the central movable shaft and the six triangular support blocks;

[0018] Figure 4 This is a measurement effect diagram of the final formation of the sealing ring according to an embodiment of this utility model;

[0019] The relevant markings in the attached diagram are: 1-workbench frame, 2-triangular support block, 3-central movable shaft, 4-sliding assembly, 5-connecting rod, 6-drive cylinder component; 21-blocking part, 41-slide rail, 42-slider. Detailed Implementation

[0020] 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.

[0021] Reference Figure 1 , Figure 2 , Figure 3 As shown in the figure, this utility model embodiment proposes a tool for measuring the circumference of large-size sealing rings, which mainly includes a workbench 1, six triangular support blocks 2 and a central movable shaft 3 arranged on the top surface of the workbench 1. The central movable shaft 3 is movably inserted into the middle of the top surface of the workbench 1 via a shaft assembly. The six triangular support blocks 2 are always evenly distributed around the central movable shaft 3. The apex of each triangular support block 2 faces outward at 120°. That is, the apex points of the six triangular support blocks 2 can be connected in sequence to form a regular hexagonal pattern in the top view. Each of the six triangular support blocks 2 is movably mounted on the top surface of the workbench 1 via a sliding assembly 4. Each sliding assembly 4 is rotatably connected to the lower part of the central movable shaft 3 via a connecting rod 5. That is, the six connecting rods 5 are also evenly distributed around the central movable shaft 3 below the top surface of the workbench 1. Finally, when the central movable shaft 3 moves up and down, the six triangular support blocks 2 can move outward or inward synchronously under the action of their respective connecting rods 5.

[0022] Thus, a retractable regular hexagonal synchronous contact structure is formed through six triangular support blocks, a central movable shaft, a sliding assembly, and a connecting rod. The six triangular support blocks are distributed at equal angles, with their vertices forming a regular hexagon. Through the mechanical linkage between the connecting rod and the central movable shaft, the six triangular support blocks expand outward synchronously.

[0023] In a preferred embodiment, the top view of the triangular support block 2 is an isosceles triangle, and the other two sides of the triangular support block 2 are both 30°. This isosceles triangle design ensures that the contact point between the triangular support block and the inner wall of the sealing ring is always located at its apex, avoiding sliding displacement caused by side slope contact and improving positioning accuracy.

[0024] In this embodiment, the sliding assembly 4 includes a slide rail 41 and a slider 42. The center of the central movable shaft 3 and the apex of one of the triangular support blocks 2 are both located on the axis of the slide rail 41. That is, the six slide rails 41 are also evenly distributed in an array around the central movable shaft 3. The slide rail 41 is embedded in the top surface of the workbench 1, and the slider 42 is slidably inserted into the slide rail 41, with the slider 42 protruding downwards from the workbench 1 to connect with the linkage rod 5. This design ensures that the linear motion path of the slider is consistent with the theoretical expansion or contraction direction of the triangular support block, avoiding radial deviation in the movement of the triangular support block.

[0025] One end of the linkage 5 is hinged to the lower part of the slider 42, and the other end of the linkage 5 is hinged to the central movable shaft 3. The hinge structure converts the vertical movement of the central movable shaft 3 into the radial movement of the slider 42. The hinge design allows the linkage to freely adjust its angle during the movement, avoiding jamming caused by manufacturing tolerances or wear of parts, and ensuring synchronization.

[0026] Furthermore, one end of the connecting rod 5 hinged to the central movable shaft 3 is on the same horizontal base plane, and the axis of the corresponding connecting rod 5 is aligned with the axis of the slide rail 41. The collinear design of the axes of the connecting rod and the slide rail eliminates lateral forces, reduces frictional losses between the slider and the slide rail, improves smoothness of movement, and makes the force exerted by the connecting rod when pushing the slider more direct.

[0027] In one embodiment, the bottom end of the triangular support block 2 extends horizontally outward to form a blocking portion 21, which protrudes from the apex of the triangular support block 2. The blocking portion can provide physical restraint, preventing the sealing ring from sliding out of the triangular support block area due to its own weight or external force during measurement. Moreover, the operator can visually align the bottom edge of the sealing ring through the blocking portion, shortening the calibration and installation time and improving the measurement efficiency of the sealing ring.

[0028] In other possible implementations, a drive cylinder 6 is provided at the lower part of the workbench 1 to connect to the bottom end of the central movable shaft 3. The drive cylinder 6 drives the central movable shaft 3 to move up and down. The drive cylinder provides a stable driving force, replacing manual operation and avoiding displacement errors of the triangular support block caused by uneven manual force application.

[0029] Measurement process: Place the sealing ring to be tested horizontally on the workbench 1, with the inner ring fitted over the six triangular support blocks 2. Use the blocking part 21 for initial positioning, ensuring that the bottom of the sealing ring is in contact with the blocking part. Move the central movable shaft 3 vertically upward. As the central movable shaft 3 rises, it drives the slider 42 to move outward along the extension direction of the slide rail 41 through the six connecting rods 6, thereby causing the triangular support blocks 2 to expand outward synchronously. Observe the contact between the triangular support blocks 2 and the inner wall of the sealing ring. When all the apex points of the triangular support blocks 2 are in close contact with the inner wall of the sealing ring, the central movable shaft 3 stops moving. Use a ruler to read the distance between the apex points of any two adjacent triangular support blocks 2. Figure 4 As shown, multiplying the reading by 6 allows for a quick and approximate deduction of the inner circumference of the sealing ring, resulting in fast measurement efficiency.

[0030] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A tool for measuring the circumference of large-size sealing rings, characterized in that, The system includes a workbench (1) and six triangular support blocks (2) and a central movable shaft (3) mounted on the workbench (1). The central movable shaft (3) is movably inserted into the workbench (1). The six triangular support blocks (2) are evenly distributed around the central movable shaft (3). The apex of each triangular support block (2) faces outward and is 120°. The apex points of the six triangular support blocks (2) can be connected in sequence to form a regular hexagon in plan view. Each of the six triangular support blocks (2) is movably mounted on the workbench (1) via a sliding group (4). Each sliding group (4) is rotatably connected to the lower part of the central movable shaft (3) with a connecting rod (5). Under the action of their respective connecting rods (5), the six triangular support blocks (2) can move synchronously outward or synchronously inward.

2. The tool for measuring the circumference of large-size sealing rings according to claim 1, characterized in that, The top view of the triangular support block (2) is an isosceles triangle, and the other two sides of the triangular support block (2) are both 30°.

3. The tool for measuring the circumference of large-size sealing rings according to claim 1, characterized in that, The sliding assembly (4) includes a slide rail (41) and a slider (42). The center of the central movable shaft (3) and the apex of one of the triangular support blocks (2) are both located on the axis of the slide rail (41). The slide rail (41) is embedded in the top surface of the workbench (1). The slider (42) is slidably inserted into the slide rail (41) and the slider (42) protrudes downward from the workbench (1).

4. The tool for measuring the circumference of large-size sealing rings according to claim 3, characterized in that, One end of the linkage rod (5) is hinged to the lower part of the slider (42), and the other end of the linkage rod (5) is hinged to the central movable shaft (3).

5. A tool for measuring the circumference of large-size sealing rings according to claim 4, characterized in that, One end of the connecting rod (5) hinged to the central movable shaft (3) is on the same horizontal base plane, and the axis of the connecting rod (5) is consistent with the axis of the slide rail (41).

6. A tool for measuring the circumference of large-size sealing rings according to claim 1, characterized in that, The bottom end of the triangular support block (2) extends horizontally outward to form a blocking part (21).

7. A tool for measuring the circumference of large-size sealing rings according to claim 1, characterized in that, The lower part of the workbench (1) is provided with a drive cylinder (6) for connecting the bottom end of the central movable shaft (3), and the drive cylinder (6) drives the central movable shaft (3) to move up and down.

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