Automatic testing device for corrugated pipe

Abstract

The utility model discloses an automatic testing device used for a corrugated pipe, comprising a rack, a torsion clamp, a lifting mechanism and a tensioning mechanism, the rack is provided with a guide rail, one side of the rack is provided with a first interface, the lifting mechanism is slidably assembled on the guide rail, the torsion clamp is connected with the lifting mechanism, and the tensioning mechanism is connected with the torsion clamp. The end, away from the first connector, of the lifting mechanism is connected with a tensioning mechanism mounted on the rack, the torsion clamp comprises a mounting plate, a first rotating pipe, first mounted bearings and a rotating driving part, the first mounted bearings are arranged on the mounting plate at intervals in the length direction of the guide rail, the first rotating pipe penetrates through the first mounted bearings, and the rotating driving part drives the first rotating pipe to rotate. A first synchronous part is arranged on the periphery of the first rotating pipe, the output end of the rotating driving part is connected with the first synchronous part through a transmission part, a second connector is arranged at the end, close to the first connector, of the first rotating pipe, and a water inlet assembly is arranged at the other end of the first rotating pipe. According to the utility model, a plurality of performance items can be tested.

Description

Technical Field

[0001] The utility model relates to the technical field of performance testing of bellows, in particular to an automatic testing device for bellows. Background Art

[0002] A bellows is a tubular elastic sensitive element with axial corrugations. It absorbs or compensates for displacement, stress, and vibration in piping systems caused by temperature fluctuations, mechanical vibration, and other factors through its elastic deformation. Bellows are widely used in industry and instrumentation, for example, as measuring elements in pressure gauges, converting pressure into displacement or force.

[0003] Bellows need to undergo a series of tests after production to ensure that they meet specific performance standards and usage requirements. Most existing testing equipment only has a single testing function. For example, a bellows bending test tool with patent number CN105203406B can only perform bellows bending tests and is less compatible with multiple performance item tests. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present utility model is to provide an automatic testing device for a bellows.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The lifting mechanism is connected with the lifting mechanism by the help of the lifting mechanism, and the lifting mechanism is connected with the lifting mechanism at the end thereof away from the first interface. The lifting mechanism is connected with the help of the lifting mechanism and the helper mechanism.

[0007] As a further improvement of the present invention: the lifting mechanism includes a lifting drive member, a fixed plate and a linear bearing, the lifting drive member is fixedly installed on the lower end of the fixed plate, a guide column is passed through the linear bearing, the fixed end of the guide column is fixedly connected to the torsion clamp, and the movable end of the guide column passes through the lower end surface of the fixed plate.

[0008] As a further improvement of the present invention: the tensioning mechanism is provided with a pulley assembly, a traction rope, a tension sensor and a tensioning drive component, the pulley assembly is arranged on the other side of the frame, one end of the traction rope is connected to the lifting mechanism, and the other end of the traction rope is connected to the drive component by passing around the pulley assembly, the traction rope drives the lifting mechanism and the torsion clamp to slide along the guide rail, and the tension sensor is arranged on the traction rope.

[0009] As a further improvement of the present invention: second seat bearings are arranged at intervals on the mounting plate along the length direction of the guide rail, a second rotating tube is passed through the second seat bearing, a second synchronizing member is sleeved on the outer periphery of the second rotating tube, a third synchronizing member is sleeved on the outer periphery of the first rotating tube, and the second synchronizing member and the third synchronizing member are connected through a transmission member.

[0010] As a further improvement of the present invention: the torsion clamp is also provided with a support plate, the rotation drive member is installed on the support plate, the fixed end of the guide column is connected to the lower end of the support plate, the output end of the lifting drive member is connected to the support plate, and the upper end of the support plate is connected to the mounting plate.

[0011] As a further improvement of the present invention: the pulley assembly includes a first pulley module and a second pulley module arranged opposite to each other, the first pulley module and the second pulley module each have two movable pulleys, a connecting plate is installed on the front side of the fixed plate, two fixing rings are provided on the connecting plate, and the fixing rings are connected to the traction rope.

[0012] As a further improvement of the present invention: a support guide column is provided between the support plate and the mounting plate.

[0013] As a further improvement of the present invention: the lifting mechanism is further provided with a limit seat and a slider, the limit seat is provided with a limit channel along the length direction of the guide rail, the slider is arranged in the limit channel, and the lower end of the slider abuts against the guide rail.

[0014] As a further improvement of the present invention: the first interface and the second interface have the same structure, one end of the first interface is detachably mounted on the first rotating tube, and the other end of the first interface is matched with the bellows.

[0015] As a further improvement of the present invention: a second interface is provided at one end of the second rotating tube close to the first interface, and a water inlet assembly is provided at the other end of the second rotating tube.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model utilizes a tensioning mechanism to straighten the bellows for testing, realizes automatic up and down swing testing through a lifting mechanism, realizes torsion testing through a rotating drive member of a torsion fixture, a rotating tube, a first synchronous member, a first seat bearing, etc. The up and down swing test and the torsion test of the bellows can be carried out simultaneously, combining automatic vibration, rotation, and straightening tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic structural diagram of an automatic testing device for a bellows according to an embodiment of the present invention.

[0019] Figure 2 This is a partial schematic diagram of an automatic testing device for a bellows according to an embodiment of the present utility model.

[0020] Figure 3 This is a schematic diagram of an automatic testing device for a bellows according to an embodiment of the present utility model.

[0021] Reference numerals:

[0022] 1. Rack, 101. First interface, 11. Guide rail, 12. Recovery tank, 13. Control cabinet,

[0023] 2. Torsion fixture, 21. Mounting plate, 22. First rotating tube, 221. Second interface, 222. Water inlet assembly, 23. First seat bearing, 24. Rotary drive member, 25. First synchronizer, 26. Second seat bearing, 27. Second rotating tube, 28. Second synchronizer, 29. Third synchronizer,

[0024] 3. Lifting mechanism, 31. Lifting drive component, 32. Fixed plate, 33. Linear bearing, 34. Guide column, 35. Limit seat, 41. First pulley module, 42. Second pulley module, 43. Traction rope, 5. Support plate. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will provide a clear and complete description of the technical solutions of the present invention in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0026] In order to solve the technical problems in the prior art, the present invention is further described in conjunction with the accompanying drawings and embodiments:

[0027] like Figures 1 to 3As shown, an embodiment of the utility model discloses an automatic testing device for a corrugated pipe, comprising a frame 1, a torsion fixture 2, a lifting mechanism 3 and a tensioning mechanism, wherein a guide rail 11 is provided on the frame 1, a first interface 101 is provided on one side of the frame 1, the lifting mechanism 3 is slidably assembled on the guide rail 11, the torsion fixture 2 is connected to the lifting mechanism 3, and the end of the lifting mechanism 3 away from the first interface 101 is connected to the tensioning mechanism installed on the frame 1, the torsion fixture 2 comprises a mounting plate 21, a first rotating tube 22, a first seat bearing 23 and a rotating drive member 24, the first seat bearings 23 are arranged at intervals on the mounting plate 21 along the length direction of the guide rail 11, the first rotating tube 22 is inserted into the first seat bearing 23, the outer periphery of the first rotating tube 22 is provided with a first synchronizing member 25, the output end of the rotating drive member 24 is connected to the first synchronizing member 25 through a transmission member, the end of the first rotating tube 22 close to the first interface 101 is provided with a second interface 221, and the other end of the first rotating tube 22 is provided with a water inlet assembly 222.

[0028] In the embodiment, one end of the bellows is manually installed on the first interface 101, and the other end of the bellows is connected to the second interface 221 on the rotating tube. The test is started, water is passed through the bellows through the water inlet assembly 222, and the tensioning mechanism is started and stops according to the set vertical tension to reach the preset value. The lifting mechanism 3 drives the torsion clamp 2 to realize the up and down swing test, and the torsion clamp 2 drives the first rotating tube 22 and the bellows to torsion test synchronously. In this way, automatic vibration, automatic rotation, and straightening tests are realized.

[0029] In order to ensure the stability of the lifting mechanism 3 and the torsion clamp 2 thereon in moving on the guide rail 11, at least two guide rails 11 are further provided on the frame 1 to improve the smoothness of the lifting mechanism 3 sliding on the guide rail 11 and balance the bearing capacity of the lifting mechanism 3 on the torsion clamp 2.

[0030] In some embodiments, second seat bearings 26 are spaced apart on the mounting plate 21 along the length direction of the guide rail 11, a second rotating tube 27 is passed through the second seat bearing 26, a second synchronizing member 28 is sleeved on the outer periphery of the second rotating tube 27, a third synchronizing member 29 is sleeved on the outer periphery of the first rotating tube 22, and the second synchronizing member 28 and the third synchronizing member 29 are connected by a transmission member.

[0031] The first and second rotating tubes 22 and 27 enable online testing of two bellows. Depending on the number of bellows to be measured, additional components such as bearing blocks and synchronizers can be added during actual testing. Furthermore, the first, second, and third synchronizers 25, 28, and 29 can be synchronous pulleys. The output end of the rotary drive 24 is connected to a corresponding driving pulley. The transmission element utilizes a synchronous belt, and the rotary drive 24 employs a servo motor.

[0032] In some embodiments, the lifting mechanism 3 includes a lifting drive 31, a fixed plate 32 and a linear bearing 33. The lifting drive 31 is fixedly installed at the lower end of the fixed plate 32. A guide column 34 is passed through the linear bearing 33. The fixed end of the guide column 34 is fixedly connected to the torsion clamp 2, and the movable end of the guide column 34 passes through the lower end surface of the fixed plate 32.

[0033] Typically, linear bearings 33 and guide posts 34 are provided at the four corners of the fixed plate 32, so that the lifting drive 31 drives the torsion fixture 2 to move up and down for a swing test, and the movement is smooth. The lifting drive 31 is typically a lifting cylinder, which is an existing structure.

[0034] In some embodiments, the tensioning mechanism is provided with a pulley assembly, a traction rope 43, a tension sensor (not shown in the figure) and a tensioning drive (not shown in the figure). The pulley assembly is provided on the other side of the frame 1, one end of the traction rope 43 is connected to the lifting mechanism 3, and the other end of the traction rope 43 is connected to the drive member by passing around the pulley assembly. The traction rope 43 drives the lifting mechanism 3 and the torsion clamp 2 to slide along the guide rail 11, and the tension sensor is provided on the traction rope 43.

[0035] The tensioning drive is an existing structure that can drive the traction rope 43 to reel in and out. The tension value of the traction rope 43 is detected by the tension sensor. The preset value can be determined according to the corrugated tubes of different specifications and lengths. The tension value detected by the tension sensor is sent to the controller. When the tested tension value reaches the preset value, the tensioning drive is controlled to slow down the rotation speed until it stops. The corrugated tube is straightened and the test is completed. The tensioning drive is controlled to drive the traction rope 43 to unwind, and the corrugated tube is manually removed.

[0036] Furthermore, the pulley assembly includes a first pulley module 41 and a second pulley module 42 arranged relatively to each other. The first pulley module 41 and the second pulley module 42 respectively have two movable pulleys. A connecting plate is installed on the front side of the fixed plate 32. Two fixing rings are provided on the connecting plate, and the fixing rings are connected to the traction rope 43.

[0037] The traction rope 43 can be a steel rope. A tension sensor is provided on the traction rope 43 between the first pulley module 41 and the second pulley module 42.

[0038] The two pulley modules and the traction rope 43 are designed to ensure the reliability and stability of the tensioning mechanism driving the lifting mechanism 3 and the torsion clamp 2 thereon to slide on the guide rail 11.

[0039] In some embodiments, the torsion clamp 2 is further provided with a support plate 5, the rotation drive member 24 is installed on the support plate 5, the fixed end of the guide column 34 is connected to the lower end of the support plate 5, the output end of the lifting drive member 31 is connected to the support plate 5, and the upper end of the support plate 5 is connected to the mounting plate 21.

[0040] Furthermore, support guide columns are provided between the support plate 5 and the mounting plate 21. Generally, support guide columns are provided at the four corners of the support plate 5 and the mounting plate 21.

[0041] In some embodiments, the lifting mechanism 3 is further provided with a limit seat 35 and a slider. The limit seat 35 defines a limit channel along the length of the guide rail 11. The slider is disposed in the limit channel, and the lower end of the slider abuts against the guide rail 11. The slider can be replaced with a pulley.

[0042] In some embodiments, the first interface 101 and the second interface 221 have the same structure. One end of the first interface 101 is detachably mounted to the first rotating tube 22, and the other end of the first interface 101 is compatible with the bellows. The detachable mounting of the first interface 101 and the second interface 221 allows for compatibility with bellows tests of varying specifications.

[0043] In some embodiments, a second interface 221 is provided at one end of the second rotating tube 27 close to the first interface 101 , and a water inlet assembly 222 is provided at the other end of the second rotating tube 27 .

[0044] A recovery tank 12 is provided on the frame 1 and is located below the guide rail 11 for recovering water during the test for recycling.

[0045] A control cabinet 13 is provided on one side of the rack 1. The control cabinet 13 is provided with a human-computer interaction display screen, which can realize human-computer interaction and allow users to interact with the screen through touch, voice, gestures, etc. to control equipment, obtain information or perform tasks.

[0046] The main functions of this utility model are:

[0047] The utility model utilizes a tensioning mechanism to straighten the bellows for testing, and drives the bellows clamped by the torsion clamp through the lifting mechanism to realize automatic up and down swing testing. At the same time, the torsion test is realized through the rotating drive member of the torsion clamp, the rotating tube, the first synchronous member, the first seat bearing, etc. The up and down swing test and the torsion test of the bellows can be carried out simultaneously, and automatic vibration, rotation and straightening tests are combined.

[0048] In summary, after reading the document of this utility model, ordinary technicians in this field can make various other corresponding transformation schemes based on the technical scheme and technical concept of this utility model without creative mental work, which all fall within the scope of protection of this utility model.

Claims

1. An automatic testing device for a bellows, characterized in that: The cam is connected to the control stand by an end face of the first control wheel, and the control wheel is connected to the control wheel by the helper device, and the control wheel is connected to the control wheel by the helper device.

2. The automatic testing device for a corrugated pipe according to claim 1, characterized in that: The lifting mechanism includes a lifting drive component, a fixed plate and a linear bearing. The lifting drive component is fixedly installed at the lower end of the fixed plate. A guide column is passed through the linear bearing. The fixed end of the guide column is fixedly connected to the torsion clamp, and the movable end of the guide column passes through the lower end surface of the fixed plate.

3. The automatic testing device for a corrugated pipe according to claim 2, characterized in that: The tensioning mechanism is provided with a pulley assembly, a traction rope, a tension sensor and a tensioning drive. The pulley assembly is arranged on the other side of the frame. One end of the traction rope is connected to the lifting mechanism, and the other end of the traction rope passes around the pulley assembly and is connected to the drive. The traction rope drives the lifting mechanism and the torsion clamp to slide along the guide rail. The tension sensor is arranged on the traction rope.

4. An automatic testing device for a corrugated pipe according to claim 2 or 3, characterized in that: Second seat bearings are arranged at intervals on the mounting plate along the length direction of the guide rail, a second rotating tube is passed through the second seat bearing, a second synchronizing member is sleeved on the outer circumference of the second rotating tube, a third synchronizing member is sleeved on the outer circumference of the first rotating tube, and the second synchronizing member and the third synchronizing member are connected by a transmission member.

5. The automatic testing device for a corrugated pipe according to claim 2, characterized in that: The torsion clamp is also provided with a support plate, the rotation drive member is installed on the support plate, the fixed end of the guide column is connected to the lower end of the support plate, the output end of the lifting drive member is connected to the support plate, and the upper end of the support plate is connected to the mounting plate.

6. The automatic testing device for a corrugated pipe according to claim 3, characterized in that: The pulley assembly includes a first pulley module and a second pulley module arranged opposite to each other, the first pulley module and the second pulley module each having two movable pulleys, a connecting plate is installed on the front side of the fixed plate, two fixing rings are provided on the connecting plate, and the fixing rings are connected to the traction rope.

7. The automatic testing device for a corrugated pipe according to claim 5, characterized in that: A recovery pool is provided on the frame and is arranged below the guide rail.

8. The automatic testing device for a corrugated pipe according to claim 2, characterized in that: The lifting mechanism is further provided with a limiting seat and a sliding block. The limiting seat is provided with a limiting channel along the length direction of the guide rail. The sliding block is arranged in the limiting channel. The lower end of the sliding block abuts against the guide rail.

9. The automatic testing device for a corrugated pipe according to claim 4, characterized in that: The first interface and the second interface have the same structure. One end of the first interface is detachably mounted on the first rotating tube, and the other end of the first interface is matched with the corrugated tube.

10. The automatic testing device for a corrugated pipe according to claim 9, characterized in that: A second interface is provided at one end of the second rotating tube close to the first interface, and a water inlet assembly is provided at the other end of the second rotating tube.

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