Device for testing tension of spiral pipe

Abstract

The utility model discloses a device for testing tension of a spiral tube, which comprises a base and the spiral tube, two clamp assemblies are arranged at the top of the base, and the spiral tube is clamped between the clamp assemblies; the clamp assembly comprises a mounting plate of an L-shaped structure, a supporting plate fixedly connected to the side, close to the bottom, of the mounting plate, a first air cylinder fixedly connected to the top of the mounting plate and arranged opposite to the supporting plate, a first pressing plate fixedly connected to the bottom of the first air cylinder and an inner supporting assembly. The inner supporting assembly is arranged on one sides of the mounting plates and located between the first pressing plate and the supporting plate, the opposite sides of the first pressing plate and the supporting plate are each of an arc structure, one mounting plate is fixedly connected to the top of the base, and the other mounting plate is movably connected to the top of the base. Through the structure, the overall operation is simple, automatic clamping and positioning operation of the spiral pipe is achieved, errors possibly caused by manual operation are reduced while the working efficiency is improved, and the convenience of device operation and the continuity of testing are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tension testing, in particular to a device for testing the tension of a spiral tube. Background Art

[0002] Spiral pipes are widely used in many fields, such as machinery, construction, and fluid transmission systems. In order to ensure the safety and reliability of spiral pipes in actual use, tensile testing is required.

[0003] In the prior art, after searching, it was found that a Chinese patent disclosed "a device for testing the tension of a spiral tube", and its application number is "202322389793.8". The above patent mainly includes a base plate and a spiral tube. Two support plates are fixedly provided on the upper surface of the base plate, and a bidirectional screw is provided between the two support plates. The rod walls at both ends of the bidirectional screw are rotatably connected to the side walls of the corresponding support plates respectively. The rod walls of the bidirectional screw are symmetrically threaded with two sliders. An L-shaped rod is fixedly provided on the top of each slider. The other end of each L-shaped rod is connected to a pulling mechanism. The spiral tube is provided between the two pulling mechanisms and its two ends are respectively connected to the corresponding pulling mechanisms. Conical plugs are inserted into the inner walls of the two ends of the spiral tube. Although the above utility model can insert the conical plug into the interior of the spiral tube and clamp it to fix it through the provided conical plug and two clamping mechanisms, it can effectively ensure the stability of the clamping, thereby avoiding the situation where the spiral tube becomes loose during the tension test. However, when the above-mentioned device is clamping and fixing the spiral tube, it is necessary to sleeve a bellows and a throat clamp on the end of the spiral tube, and then fix the spiral tube by tightening the throat clamp. Its operation process is relatively cumbersome and time-consuming. The tester first needs to select a matching bellows, and then tighten the throat clamp with a tool. After the tension test is completed, the bellows and the throat clamp need to be disassembled again. Repeated disassembly and assembly not only reduces the test efficiency, but also may cause the throat clamp to be not tightened in place due to manual negligence or fatigue. The spiral tube may become loose or slip during the test, affecting the accuracy and reliability of the test. Therefore, the utility model provides a device for testing the tension of a spiral tube to solve the problems raised in the above-mentioned background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a device for testing the tensile force of a spiral tube. The overall operation is simple, and the automatic clamping and positioning operation of the spiral tube is realized, which is beneficial to improving work efficiency while reducing errors that may be caused by manual operation, thereby improving the convenience of device operation and the continuity of testing.

[0005] To achieve the above object, a device for testing the tension of a spiral tube is provided, comprising a base and a spiral tube, wherein two clamp assemblies are provided on the top of the base, and the spiral tube is clamped between the clamp assemblies;

[0006] The clamp assembly includes an L-shaped mounting plate, a support plate fixedly connected to one side of the mounting plate near the bottom, a first cylinder fixedly connected to the top of the mounting plate and arranged opposite to the support plate, a first pressure plate fixedly connected to the bottom of the first cylinder, and an inner support assembly, wherein the inner support assembly is provided on one side of the mounting plate and is located between the first pressure plate and the support plate, and the sides of the first pressure plate and the support plate facing each other are both configured as arc structures, one of the mounting plates is fixedly connected to the top of the base, and the other mounting plate is movably connected to the top of the base;

[0007] The internal support assembly includes a connecting plate installed on the outside of the mounting plate, two movable rods symmetrically slidably connected to the inside of the connecting plate, two second pressure plates fixedly connected to one end of the movable rods and a control assembly arranged inside the mounting plate for adjusting the distance between the two second pressure plates. The separated sides of the second pressure plates are also set to an arc structure.

[0008] According to the device for testing the tension of a spiral tube, the internal support assembly also includes two fixed rods fixedly connected to the outside of the connecting plate, a bidirectional screw rod rotatably connected to the inside of the connecting plate, two bevel gears arranged inside the connecting plate and meshing with each other, a motor fixedly connected to one side of the connecting plate and a rotating rod fixedly connected to the output shaft of the motor, the two fixed rods are fixedly connected to the mounting plate, the two movable rods are symmetrically threadedly connected to the outside of the bidirectional screw rod, one of the bevel gears is fixedly connected to the middle of the bidirectional screw rod, and the other bevel gear is fixedly connected to the end of the rotating rod opposite to the motor, and the rotating rod is rotatably connected to the inside of the connecting plate.

[0009] According to the device for testing the tension of a spiral tube, a fourth fixed plate is fixedly connected to the top of the base and on one side close to the movable mounting plate, a second cylinder is fixedly connected to the side of the fourth fixed plate close to the mounting plate, and the piston rod of the second cylinder is fixedly connected to the adjacent mounting plate.

[0010] According to the device for testing the tension of a spiral tube, a second fixed plate is fixedly connected to the outer side of the movable mounting plate, a first fixed plate is fixedly connected to the top of the base and on one side close to the second fixed plate, and a tension sensor is installed between the first fixed plate and the second fixed plate.

[0011] According to the device for testing the tension of a spiral tube, two third fixed plates are symmetrically fixedly connected to the top of the base and on one side close to the first fixed plate, and a guide rod is fixedly connected between the two third fixed plates and the fourth fixed plate, and a mounting plate close to the guide rod is slidably connected to the guide rod.

[0012] According to the device for testing the tension of a spiral tube, the first pressing plate, the second pressing plate and the support plate are all provided with anti-slip textures on one side close to the spiral tube.

[0013] The utility model has the following beneficial effects:

[0014] Compared with the existing technology, this device for testing the tension of a spiral tube has simple overall operation and realizes automatic clamping and positioning operations of the spiral tube, which is beneficial to improving work efficiency while reducing errors that may be caused by manual operation, thereby improving the convenience of device operation and the continuity of testing.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a first overall structural diagram of a device for testing the tension of a spiral tube according to the present invention;

[0018] Figure 2 This is a second overall structural diagram of a device for testing the tension of a spiral tube according to the present invention;

[0019] Figure 3 This is a schematic diagram of the internal cross-sectional structure of a spiral tube of a device for testing the tension of a spiral tube according to the present invention;

[0020] Figure 4 The utility model is a schematic diagram of the internal cross-sectional structure of a connecting plate of a device for testing the tension of a spiral tube.

[0021] Legend:

[0022] 1. Base; 2. Spiral tube; 3. Mounting plate; 4. First cylinder; 5. First pressure plate; 6. Support plate; 7. Fixed rod; 8. Connecting plate; 9. Movable rod; 10. Second pressure plate; 11. Motor; 12. Bidirectional screw; 13. Bevel gear; 14. Rotating rod; 15. First fixed plate; 16. Tension sensor; 17. Second fixed plate; 18. Third fixed plate; 19. Guide rod; 20. Second cylinder; 21. Fourth fixed plate. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0024] Reference Figure 1-4The present invention provides a device for testing the tension of a spiral tube, which includes a base 1 and a spiral tube 2. Two clamp assemblies are provided on the top of the base 1, and the spiral tube 2 is clamped between the clamp assemblies.

[0025] The clamp assembly includes an L-shaped mounting plate 3, a support plate 6 fixedly connected to the mounting plate 3 near the bottom side, a first cylinder 4 fixedly connected to the top of the mounting plate 3 and arranged opposite to the support plate 6, a first pressure plate 5 fixedly connected to the bottom of the first cylinder 4, and an inner support assembly. The inner support assembly is provided on one side of the mounting plate 3 and is located between the first pressure plate 5 and the support plate 6. The sides of the first pressure plate 5 and the support plate 6 facing each other are both configured as arc structures. One of the mounting plates 3 is fixedly connected to the top of the base 1, and the other mounting plate 3 is movably connected to the top of the base 1.

[0026] By controlling the extension and contraction of the first cylinder 4, the first pressing plate 5 moves downward, contacts the top surface of the spiral tube 2 and applies a certain pre-tightening force, and in cooperation with the support plate 6, the spiral tube 2 can be clamped.

[0027] The inner support assembly includes a connecting plate 8 installed on the outside of the mounting plate 3, two movable rods 9 symmetrically slidably connected to the inside of the connecting plate 8, two second pressure plates 10 fixedly connected to the ends of the movable rods 9 and a control assembly provided inside the mounting plate 3 for adjusting the distance between the two second pressure plates 10, and the sides of the second pressure plates 10 separated are also set as arc structures. The inner support assembly also includes two fixed rods 7 fixedly connected to the outside of the connecting plate 8, a bidirectional screw rod 12 rotatably connected to the inside of the connecting plate 8, two bevel gears 13 provided inside the connecting plate 8 and meshing with each other, a motor 11 fixedly connected to one side of the connecting plate 8 and a rotating rod 14 fixedly connected to the output shaft of the motor 11. The two fixed rods 7 are fixedly connected to the mounting plate 3, and the two movable rods 9 are symmetrically threadedly connected to the outside of the bidirectional screw rod 12, one of the bevel gears 13 is fixedly connected to the middle of the bidirectional screw rod 12, and the other bevel gear 13 is fixedly connected to the end of the rotating rod 14 opposite to the motor 11, and the rotating rod 14 is rotatably connected to the inside of the connecting plate 8.

[0028] When the first pressing plate 5 clamps the spiral tube 2, the motor 11 runs, and through the transmission of the rotating rod 14 and the bevel gear 13, the bidirectional screw 12 rotates, thereby driving the two movable rods 9 to move away from each other, adjusting the distance between the second pressing plate 10 to ensure that the inner wall of the spiral tube 2 is effectively supported. By cooperating with the first pressing plate 5 and the support plate 6, the stability of the clamping is enhanced, and the uniformity of the clamping is significantly improved, which facilitates the subsequent tensile test work and realizes the automatic clamping and positioning operation of the spiral tube 2, which is beneficial to improving work efficiency while reducing the errors that may be caused by human operation, improving the convenience of device operation and the continuity of testing.

[0029] A fourth fixing plate 21 is fixedly connected to the top of the base 1, near one side of the movable mounting plate 3. A second cylinder 20 is fixedly connected to the side of the fourth fixing plate 21 near the mounting plate 3. The piston rod of the second cylinder 20 is fixedly connected to the adjacent mounting plate 3. The operation of the second cylinder 20 can drive the mounting plate 3 to move left and right through the extension and retraction of its telescopic rod. When the mounting plate 3 moves toward the side away from the spiral tube 2, a pulling force can be applied to the spiral tube 2. Two third fixing plates 18 are symmetrically fixedly connected to the top of the base 1, near one side of the first fixing plate 15. A guide rod 19 is fixedly connected between the two third fixing plates 18 and the fourth fixing plate 21. The mounting plate 3 near the guide rod 19 is slidably connected to the guide rod 19. The operation of the second cylinder 20 can smoothly push the movable mounting plate 3 to slide along the guide rod 19, ensuring that the mounting plate 3 slides smoothly during movement and avoiding deviation.

[0030] A second fixed plate 17 is fixedly connected to the outer side of the movable mounting plate 3, and a first fixed plate 15 is fixedly connected to the top of the base 1 and on one side close to the second fixed plate 17. A tension sensor 16 is installed between the first fixed plate 15 and the second fixed plate 17. When the movable mounting plate 3 moves, the tension sensor 16 can measure and record the tension applied to the spiral tube 2 in real time.

[0031] The first pressing plate 5 , the second pressing plate 10 and the support plate 6 are all provided with anti-slip textures on one side close to the spiral tube 2 , and the anti-slip textures are used to enhance the stability of the connection between the first pressing plate 5 , the second pressing plate 10 and the support plate 6 and the spiral tube 2 .

[0032] Working principle: Place the spiral tube 2 to be tested above the support plate 6, control the expansion and contraction of the first cylinder 4 to move the first pressure plate 5 downward, contact the top surface of the spiral tube 2 and apply a certain pre-tightening force. Under the cooperation with the support plate 6, the spiral tube 2 can be clamped.

[0033] After the first pressure plate 5 clamps the spiral tube 2, the motor 11 runs, and through the transmission of the rotating rod 14 and the bevel gear 13, the bidirectional screw 12 rotates, thereby driving the two movable rods 9 to move away from each other, adjusting the distance between the second pressure plate 10 to ensure that the inner wall of the spiral tube 2 is effectively supported. By cooperating with the first pressure plate 5 and the support plate 6, the stability of the clamping is enhanced and the uniformity of the clamping is significantly improved, which facilitates the subsequent tensile test.

[0034] By controlling the operation of the second air cylinder 20, the telescopic rod thereof is extended and retracted to move the mounting plate 3 away from the spiral tube 2, thereby applying tension to the spiral tube 2. Furthermore, when the movable mounting plate 3 moves, the tension sensor 16 can measure and record the tension exerted on the spiral tube 2 in real time, thereby completing the tension test of the spiral tube 2. The operation is simple, and the automatic clamping and positioning operation of the spiral tube 2 is realized, which is beneficial to improving work efficiency while reducing errors that may be caused by manual operation, thereby improving the convenience of device operation and the continuity of testing.

[0035] The embodiments of the present invention are described in detail above with reference to the drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A device for testing the tension of a spiral tube, characterized in that: It comprises a base (1) and a spiral tube (2), wherein two clamp assemblies are provided on the top of the base (1), and the spiral tube (2) is clamped between the clamp assemblies; The clamp assembly comprises an L-shaped mounting plate (3), a support plate (6) fixedly connected to the mounting plate (3) near the bottom side, a first cylinder (4) fixedly connected to the top of the mounting plate (3) and arranged opposite to the support plate (6), a first pressure plate (5) fixedly connected to the bottom of the first cylinder (4), and an inner support assembly, wherein the inner support assembly is arranged on one side of the mounting plate (3) and is located between the first pressure plate (5) and the support plate (6), and the sides of the first pressure plate (5) and the support plate (6) facing each other are both set as arc structures, one of the mounting plates (3) is fixedly connected to the top of the base (1), and the other mounting plate (3) is movably connected to the top of the base (1); The inner support assembly comprises a connecting plate (8) mounted on the outside of the mounting plate (3), two movable rods (9) symmetrically slidably connected to the inside of the connecting plate (8), two second pressing plates (10) fixedly connected to the movable rods (9) at one end thereof, and a control assembly arranged inside the mounting plate (3) for adjusting the distance between the two second pressing plates (10), wherein the separated sides of the second pressing plates (10) are also arranged as an arc structure.

2. The device for testing the tension of a spiral tube according to claim 1, characterized in that: The inner support assembly further comprises two fixed rods (7) fixedly connected to the outside of the connecting plate (8), a bidirectional screw rod (12) rotatably connected to the inside of the connecting plate (8), two bevel gears (13) arranged inside the connecting plate (8) and meshing with each other, a motor (11) fixedly connected to one side of the connecting plate (8), and a rotating rod (14) fixedly connected to the output shaft of the motor (11), the two fixed rods (7) are both fixedly connected to the mounting plate (3), the two movable rods (9) are symmetrically threadedly connected to the outside of the bidirectional screw rod (12), one of the bevel gears (13) is fixedly connected to the middle of the bidirectional screw rod (12), and the other bevel gear (13) is fixedly connected to the end of the rotating rod (14) opposite to the motor (11), and the rotating rod (14) is rotatably connected to the inside of the connecting plate (8).

3. The device for testing the tension of a spiral tube according to claim 2, characterized in that: A fourth fixed plate (21) is fixedly connected to the top of the base (1) and on one side close to the movable mounting plate (3); a second cylinder (20) is fixedly connected to the side of the fourth fixed plate (21) close to the mounting plate (3); and a piston rod of the second cylinder (20) is fixedly connected to the adjacent mounting plate (3).

4. The device for testing the tension of a spiral tube according to claim 3, characterized in that: A second fixing plate (17) is fixedly connected to the outer side of the movable mounting plate (3), a first fixing plate (15) is fixedly connected to the top of the base (1) and on a side close to the second fixing plate (17), and a tension sensor (16) is installed between the first fixing plate (15) and the second fixing plate (17).

5. The device for testing the tension of a spiral tube according to claim 4, characterized in that: Two third fixing plates (18) are symmetrically fixedly connected to the top of the base (1) and on one side close to the first fixing plate (15); a guide rod (19) is fixedly connected between the two third fixing plates (18) and the fourth fixing plate (21); and a mounting plate (3) close to the guide rod (19) is slidably connected to the guide rod (19).

6. The device for testing the tension of a spiral tube according to claim 1, characterized in that: The first pressing plate (5), the second pressing plate (10) and the supporting plate (6) are all provided with anti-slip textures on one side close to the spiral tube (2).

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