Special clamp for pipe hydrostatic testing machine

Abstract

The utility model discloses a special fixture for a pipe hydrostatic testing machine, which comprises a mounting seat, a plurality of electric push rods are fixedly mounted on the mounting seat, the output ends of the plurality of electric push rods are fixedly provided with the same arc-shaped placing plate, a cavity is formed in the mounting seat, and two sliding blocks are arranged in the cavity. A plurality of connecting rods are fixedly mounted on the sliding blocks, sliding grooves matched with the connecting rods for use are formed in the mounting base, the same mounting plate is fixedly mounted at the top ends of the connecting rods located on the same sliding block, mounting sleeves are fixedly mounted on the two mounting plates, and the two mounting sleeves are symmetrically arranged; the same pipe is placed between the two mounting sleeves; the connecting blocks move to drive the clamping plate to move along with the connecting blocks, the connecting blocks are close to one another, so that a pipe can be clamped and fixed through the clamping plate, operation is easy, time and labor are saved, and working efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field related to a special clamp of a pipe static hydraulic testing machine, in particular to a special clamp of a pipe static hydraulic testing machine. Background Art

[0002] The pipe hydrostatic testing machine is used to measure the pressure-resistant failure time or the maximum instantaneous bursting pressure value of various pipes such as thermoplastic pipes, composite pipes (such as PP-R, PP-B, PP-A, PE, PE-X, PVC, PVC-U, PVC-C) and aluminum-plastic composite pipes under long-term constant internal pressure and constant temperature. It is an essential testing equipment for plastic pipe manufacturers and testing institutions.

[0003] The existing pipe hydrostatic testing machine needs to use a clamp to clamp and fix the pipe to be tested when testing the pipe, but the existing clamps mostly fix the pipes by bolts, which is time-consuming and cumbersome to operate, resulting in reduced work efficiency and reduced practicality of the clamp. Utility Model Content

[0004] In order to solve the defects in the prior art, the utility model provides a special clamp for a pipe hydrostatic testing machine.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a special clamp for a pipe hydrostatic testing machine, comprising a mounting seat, a plurality of electric push rods are fixedly mounted on the mounting seat, and the output ends of the plurality of electric push rods are fixedly mounted with the same arc-shaped placement plate, a cavity is provided in the mounting seat and two sliders are arranged in the cavity, a plurality of connecting rods are fixedly mounted on the slider, a sliding groove used to cooperate with the connecting rods is provided on the mounting seat, the top ends of the plurality of connecting rods located on the same slider are fixedly mounted with the same mounting plate, mounting sleeves are fixedly mounted on both mounting plates, the two mounting sleeves are symmetrically arranged, the same pipe is placed between the two mounting sleeves, a clamping assembly for clamping and fixing the pipe is provided on the mounting sleeve, and an adjusting assembly is arranged in the mounting seat.

[0007] As a preferred technical solution of the utility model, the clamping assembly includes a mounting plate rotatably mounted in a mounting sleeve, the mounting plate is provided with a channel for the pipe to pass through, the mounting plate is provided with a plurality of guide grooves, a connecting column is slidingly mounted in the guide groove and a connecting block is fixedly mounted on the connecting column, a clamping plate is fixedly mounted on one end of the plurality of connecting blocks close to each other, a circular ring is fixedly mounted on the mounting plate and a worm wheel is fixedly mounted on the circular ring, a worm meshing with the worm wheel is rotatably mounted on the mounting sleeve, and a handwheel is fixedly mounted on one end of the worm.

[0008] As a preferred technical solution of the utility model, a plurality of guide grooves are evenly distributed in an array along the circumference.

[0009] As a preferred technical solution of the utility model, an anti-slip pad is fixedly installed on the clamping plate.

[0010] As a preferred technical solution of the utility model, a telescopic rod is fixedly installed on one end of the connecting block away from the clamping plate on the same side, and one end of the telescopic rod away from the connecting block on the same side is fixedly connected to the mounting sleeve on the same side.

[0011] As a preferred technical solution of the utility model, the adjustment component includes a bidirectional screw rod rotatably installed in the cavity, the two sliders are respectively threadedly installed on the outer surfaces of the two sections of the thread of the bidirectional screw rod, a reduction motor is fixedly installed on one side of the mounting seat, and the output end of the reduction motor is fixedly connected to one end of the bidirectional screw rod.

[0012] As a preferred technical solution of the utility model, sliding rods are fixedly installed in the mounting seat cavities on both sides of the bidirectional screw rod, and the sliding block is slidably connected to the two sliding rods.

[0013] The beneficial effects of the utility model are:

[0014] 1. The special fixture of this pipe hydrostatic testing machine is provided with a mounting sleeve, a mounting plate and a clamping assembly. The hand wheel is turned to drive the worm to rotate. The rotation of the worm drives the mounting plate to rotate through the worm gear. The mounting plate rotates through the guide groove and the connecting column and cooperates with the telescopic rod to drive the connecting blocks to approach each other. The movement of the connecting block drives the clamping plate to follow the movement. Several connecting blocks are close to each other so that the pipe can be clamped and fixed by the clamping plate. The operation is simple, time-saving and labor-saving, and the work efficiency is high. The self-locking characteristics of the worm gear and the worm can ensure the stability of the clamping, and the fixing effect is good and it is easy to use.

[0015] 2. The special fixture of this pipe hydrostatic testing machine is equipped with an adjustment component, a mounting seat, a slider, a connecting rod, a mounting plate and a mounting sleeve. The reduction motor drives the bidirectional screw to rotate, and the rotation of the bidirectional screw cooperates with the slide rod to drive the slider to move. The movement of the slider drives the connecting rod and the mounting plate to follow the movement, so that the distance between the two mounting plates can be adaptively adjusted according to the size of the pipe to be tested, which is convenient for clamping and fixing pipes of different sizes. The operation is simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of a special fixture for a pipe static hydraulic testing machine of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of a special fixture of a pipe static hydraulic testing machine of the utility model from another angle;

[0019] Figure 3 It is a schematic diagram of the worm gear structure of a special fixture of a pipe static hydraulic testing machine of the utility model;

[0020] Figure 4 This is a schematic diagram of the clamping block structure of a special clamp for a pipe static hydraulic testing machine of the utility model;

[0021] Figure 5 The utility model is a schematic diagram of the cross-sectional structure of a mounting seat of a special clamp of a pipe static hydraulic testing machine.

[0022] In the figure: 1. mounting seat; 2. electric push rod; 3. arc placement plate; 4. slider; 5. connecting rod; 6. slide groove; 7. mounting plate; 8. mounting sleeve; 9. pipe; 10. mounting plate; 11. guide groove; 12. connecting column; 13. connecting block; 14. clamping plate; 15. worm gear; 16. worm; 17. anti-slip pad; 18. telescopic rod; 19. bidirectional screw; 20. reduction motor; 21. slide rod. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0024] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the utility model is a special fixture for a static hydraulic testing machine for a pipe 9, comprising a mounting seat 1, on which a plurality of electric push rods 2 are fixedly mounted, and the output ends of the plurality of electric push rods 2 are fixedly mounted with the same arc-shaped placement plate 3, a cavity is opened in the mounting seat 1 and two sliders 4 are arranged in the cavity, a plurality of connecting rods 5 are fixedly mounted on the slider 4, a sliding groove 6 for cooperating with the connecting rods 5 is opened on the mounting seat 1, and the top ends of the plurality of connecting rods 5 located on the same slider 4 are fixedly mounted with the same mounting plate 7, both mounting plates 7 are fixedly mounted with mounting sleeves 8, the two mounting sleeves 8 are symmetrically arranged, the same pipe 9 is placed between the two mounting sleeves 8, a clamping assembly for clamping and fixing the pipe 9 is arranged on the mounting sleeve 8, an adjusting assembly is arranged in the mounting seat 1, the pipe 9 to be tested is placed on the arc-shaped placement plate 3, the position of the pipe 9 to be tested can be adjusted by the extension and retraction of the electric push rod 2, so as to facilitate the subsequent alignment and clamping of the pipe 9.

[0025] The clamping assembly includes a mounting plate 10 rotatably mounted in the mounting sleeve 8, a channel for the pipe 9 to pass through is provided on the mounting plate 10, a plurality of guide grooves 11 are provided on the mounting plate 10, a connecting column 12 is slidably mounted in the guide groove 11, and a connecting block 13 is fixedly mounted on the connecting column 12, a clamping plate 14 is fixedly mounted on one end of the plurality of connecting blocks 13 close to each other, a circular ring is fixedly mounted on the mounting plate 10, and a worm gear 15 is fixedly mounted on the circular ring, a worm 16 meshing with the worm gear 15 is rotatably mounted on the mounting sleeve 8, and a hand wheel is fixedly mounted on one end of the worm 16, A plurality of guide grooves 11 are evenly distributed in an array along the circumference. The hand wheel is turned to drive the worm 16 to rotate. The rotation of the worm 16 drives the mounting plate 10 to rotate through the worm wheel 15. The mounting plate 10 rotates through the guide groove 11 and the connecting column 12 to drive the connecting blocks 13 to approach each other. The movement of the connecting block 13 drives the clamping plate 14 to follow the movement. The plurality of connecting blocks 13 are close to each other so that the pipe 9 can be clamped and fixed by the clamping plate 14. The operation is simple, time-saving and labor-saving, and the work efficiency is high. The self-locking characteristics of the worm wheel 15 and the worm 16 can ensure the stability of the clamping, and the fixing effect is good and the use is convenient.

[0026] Among them, an anti-skid pad 17 is fixedly installed on the clamping plate 14, and the anti-skid pad 17 can increase the friction between the clamping plate 14 and the pipe 9 to be tested, thereby improving the stability of clamping the pipe 9.

[0027] Among them, a telescopic rod 18 is fixedly installed on the end of the connecting block 13 away from the clamping plate 14 on the same side, and the end of the telescopic rod 18 away from the connecting block 13 on the same side is fixedly connected to the mounting sleeve 8 on the same side. The telescopic rod 18 can guide and limit the movement of the connecting block 13 and the clamping plate 14 to ensure the stability of the movement of the connecting block 13 and the clamping plate 14.

[0028] Among them, the adjustment component includes a bidirectional screw 19 rotatably installed in the cavity, and two sliders 4 are respectively threadedly installed on the outer surfaces of the two sections of the thread of the bidirectional screw 19. A reduction motor 20 is fixedly installed on one side of the mounting seat 1. The output end of the reduction motor 20 is fixedly connected to one end of the bidirectional screw 19. The reduction motor 20 drives the bidirectional screw 19 to rotate, and the rotation of the bidirectional screw 19 drives the two sliders 4 to move. The movement of the slider 4 drives the connecting rod 5 and the mounting plate 7 to follow the movement, so that the distance between the two mounting plates 7 can be adaptively adjusted according to the size of the pipe 9 to be tested, which is convenient for clamping and fixing pipes 9 of different sizes. The operation is simple and practical.

[0029] Among them, sliding rods 21 are fixedly installed in the cavities of the mounting seat 1 on both sides of the bidirectional screw rod 19, and the slider 4 is slidably connected to the two sliding rods 21. The sliding rods 21 can guide and limit the movement of the slider 4 to prevent the slider 4 from offset and rotating during the movement on the bidirectional screw rod 19, thereby ensuring the stability of the slider 4 during the movement.

[0030] During operation, the pipe 9 to be tested is placed on the arc-shaped placement plate 3, and then the electric push rod 2 is started. According to the axial position of the pipe 9 to be tested, the pipe 9 to be tested is adjusted to a suitable height by the extension and retraction of the electric push rod 2, and then the reduction motor 20 is started. The reduction motor 20 drives the bidirectional screw rod 19 to rotate, and the rotation of the bidirectional screw rod 19 cooperates with the slide bar 21 to drive the slider 4 to move. The movement of the slider 4 drives the connecting rod 5 and the mounting plate 7 to follow the movement, so that the two ends of the pipe 9 to be tested pass through the channels on the mounting plates 10 on both sides respectively, and then the hand wheel is turned to drive the pipe 9 to pass through the channels on the mounting plates 10 on both sides. The movable worm 16 rotates, and the worm 16 rotates through the worm wheel 15 to drive the mounting plate 10 to rotate. The mounting plate 10 rotates through the guide groove 11 and the connecting column 12 and cooperates with the telescopic rod 18 to drive the connecting blocks 13 to approach each other. The movement of the connecting blocks 13 drives the clamping plate 14 to follow the movement. Several connecting blocks 13 are close to each other so that the pipe 9 can be clamped and fixed by the clamping plate 14. The operation is simple, time-saving and labor-saving, and the work efficiency is high. The self-locking characteristics of the worm wheel 15 and the worm 16 can ensure the stability of the clamping, and the fixing effect is good and easy to use.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A special fixture for a pipe hydrostatic testing machine, comprising a mounting seat (1), characterized in that: A plurality of electric push rods (2) are fixedly mounted on the mounting seat (1), and the output ends of the plurality of electric push rods (2) are fixedly mounted with a same arc-shaped placement plate (3), a cavity is provided in the mounting seat (1) and two sliders (4) are arranged in the cavity, a plurality of connecting rods (5) are fixedly mounted on the sliders (4), a sliding groove (6) used in conjunction with the connecting rods (5) is provided on the mounting seat (1), a same mounting plate (7) is fixedly mounted on the top ends of the plurality of connecting rods (5) located on the same slider (4), a mounting sleeve (8) is fixedly mounted on both mounting plates (7), the two mounting sleeves (8) are symmetrically arranged, a same pipe (9) is placed between the two mounting sleeves (8), a clamping assembly for clamping and fixing the pipe (9) is arranged on the mounting sleeve (8), and an adjustment assembly is arranged in the mounting seat (1).

2. A special fixture for a pipe hydrostatic testing machine according to claim 1, characterized in that: The clamping assembly comprises a mounting plate (10) rotatably mounted in a mounting sleeve (8), the mounting plate (10) being provided with a channel for the pipe (9) to pass through, the mounting plate (10) being provided with a plurality of guide grooves (11), a connecting column (12) being slidably mounted in the guide groove (11) and a connecting block (13) being fixedly mounted on the connecting column (12), a clamping plate (14) being fixedly mounted on one end of the plurality of connecting blocks (13) close to each other, a circular ring being fixedly mounted on the mounting plate (10) and a worm gear (15) being fixedly mounted on the circular ring, a worm (16) meshing with the worm gear (15) being rotatably mounted on the mounting sleeve (8), and a hand wheel being fixedly mounted on one end of the worm gear (16).

3. A special fixture for a pipe hydrostatic testing machine according to claim 2, characterized in that: A plurality of guide grooves (11) are evenly distributed in an array along the circumference.

4. The special fixture for a pipe hydrostatic testing machine according to claim 2, characterized in that: An anti-slip pad (17) is fixedly mounted on the clamping plate (14).

5. The special fixture for a pipe hydrostatic testing machine according to claim 2, characterized in that: A telescopic rod (18) is fixedly mounted on one end of the connecting block (13) away from the clamping plate (14) on the same side, and one end of the telescopic rod (18) away from the connecting block (13) on the same side is fixedly connected to the mounting sleeve (8) on the same side.

6. The special fixture for a pipe hydrostatic testing machine according to claim 1, characterized in that: The adjustment assembly comprises a bidirectional screw (19) rotatably mounted in the cavity, the two sliders (4) being respectively threadedly mounted on the outer surfaces of two sections of threads of the bidirectional screw (19), a reduction motor (20) being fixedly mounted on one side of the mounting seat (1), and the output end of the reduction motor (20) being fixedly connected to one end of the bidirectional screw (19).

7. A special fixture for a pipe hydrostatic testing machine according to claim 6, characterized in that: Sliding rods (21) are fixedly installed in the cavities of the mounting seats (1) on both sides of the bidirectional screw rod (19), and the sliding block (4) is slidably connected to the two sliding rods (21).

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