Bellows testing bench

Abstract

The present invention belongs to the field of bellows detection, and provides a bellows detection test bench, including a water tank, fixed seats are fixedly connected on both sides of the water tank, and slide plates are slidably connected on the fixed seats, and a retractable electric push seat is connected between the slide plates and the fixed seats, and sealing mechanisms are fixedly connected on the slide plates, and two sealing mechanisms can fix and seal the bellows at both ends of the fixed seats, and stretching components are provided in the sealing mechanisms, and a rubber tube is provided in the middle of the two stretching components, and the two stretching components can fix the two ends of the rubber tube. In the present invention, the start-up limit mechanism and the positioning mechanism are clamped to the bellows at the same time, and at this time, under the magnetic force of the electromagnet, the elastic component is adsorbed and connected to the limit mechanism, and the support component is adsorbed and connected to the positioning mechanism at the same time, and the middle part of the bellows is fixed by the support component and the positioning mechanism, and there are elastic components and limit mechanisms on both sides of the positioning mechanism to elastically limit the bellows.

Description

Technical Field

[0001] The invention belongs to the field of bellows detection, and in particular relates to a bellows detection test bench. Background Art

[0002] Bellows refers to a tubular elastic sensitive element connected by foldable corrugated sheets along the folding and stretching direction. The wall of the bellows is thin, its open end is fixed, the sealed end is in a free state, and auxiliary spiral springs or reeds are used to increase elasticity. Bellows are sometimes also used as isolation elements.

[0003] The existing corrugated pipe detection device generally seals both ends of the corrugated pipe when detecting the corrugated pipe, and then puts the corrugated pipe in a water pool, and determines whether the surface of the corrugated pipe has cracks by observing whether bubbles float on the surface of the corrugated pipe in the water pool.

[0004] However, in the above technology, since the cracks of the bellows are not easy to leak in the contracted state, the small cracks on the surface of the bellows are not easy to be found. In addition, due to the limited hardness of the bellows, it is difficult to firmly clamp the bellows in the water, so the bellows is stretched for observation. Furthermore, the stretching process of the bellows is also likely to cause the water flow in the pool to be mixed, affecting the observation. Summary of the invention

[0005] The purpose of the present invention is to provide a bellows detection test bench, aiming to solve the technical problem in the prior art that cracks of the bellows in a contracted state are not easy to leak, resulting in small cracks on the surface of the bellows in a contracted state being difficult to be discovered.

[0006] The present invention is implemented as follows: a bellows testing bench comprises a water tank, fixed seats are fixedly connected on both sides of the water tank, slide plates are slidably connected to the fixed seats, a retractable electric push seat is connected between the slide plates and the fixed seats, sealing mechanisms are fixedly connected to the slide plates, two sealing mechanisms can fix and seal the bellows at both ends of the fixed seats, stretching components are arranged in the sealing mechanisms, a rubber tube is arranged in the middle of the two stretching components, the two stretching components can fix the two ends of the rubber tube, one of the sealing mechanisms and one of the stretching components are respectively connected to a No. 1 air pump and a No. 2 air pump;

[0007] Two elastic components are connected to the rubber tube, and a support component is arranged between the two elastic components. Under the action of the air pressure in the rubber tube, the two elastic components can be elastically squeezed with the inner wall of the bellows, and at the same time, the support component can rigidly squeeze the inner wall of the bellows. Two limiting mechanisms are respectively arranged in the water tank, and the two limiting mechanisms are respectively arranged outside the two elastic components. The limiting mechanisms can perform vertical elastic limiting on the bellows. A positioning mechanism is arranged between the two limiting mechanisms, and the positioning mechanism is arranged outside the support component. The positioning mechanism can perform vertical positioning on the bellows by cooperating with the limiting mechanism, and the positioning mechanism can drive the bellows to twist; a pressure sensor is arranged in one of the sealing mechanisms;

[0008] The limiting mechanism and the positioning mechanism are both fixedly connected with an electromagnet, the electromagnet is made of metal, and the elastic component and the supporting component can be adsorbed by the electromagnet, and the rubber tube has good shrinkage;

[0009] The first air pump (12) can increase the air pressure in the bellows, and the second air pump (13) can inflate the rubber tube (11), the elastic component (6) and the support component (7).

[0010] Further technical solution: the elastic component includes a fixing sleeve and an airbag, the fixing sleeve is fixed to the outside of the rubber tube, the airbag is wrapped around the outside of the fixing sleeve, and the fixing sleeve is connected to the rubber tube and the airbag.

[0011] Further technical solution: the support assembly includes a rotating tube, a telescopic sleeve and an arc-shaped support frame;

[0012] The rubber tube is rotatably connected to a rotating tube, and the rubber tube is communicated with the rotating tube. The rotating tube is externally communicated with a telescopic sleeve, and the telescopic end of the telescopic sleeve is communicated with an arc-shaped support frame. An air guide valve for unidirectionally guiding air into the arc-shaped support frame is arranged inside the telescopic sleeve.

[0013] Further technical solution: the limiting mechanism includes a No. 1 support frame, a No. 1 electric rod, a No. 1 limiting frame, a No. 2 electric rod, a No. 2 limiting frame and a rubber pad;

[0014] The No. 1 support frame is fixedly connected to the outer wall of the water tank, one end of the No. 1 support frame is fixedly connected to the No. 1 electric rod, the telescopic end of the No. 1 electric rod is fixedly connected to the No. 1 limit frame, the inner bottom surface of the water tank is fixedly connected to the No. 2 electric rod, the telescopic end of the No. 2 electric rod is fixedly connected to the No. 2 limit frame, the No. 2 limit frame and the No. 1 limit frame are both facing the elastic component, and rubber pads are provided on the end surfaces of the No. 2 limit frame and the No. 1 limit frame facing the elastic component.

[0015] Further technical solution: the positioning mechanism includes a No. 2 support frame, a No. 3 electric rod, a No. 1 guide rail, a torsion assembly, a No. 4 electric rod, a No. 2 guide rail and a No. 4 limit frame;

[0016] The outer wall of the water tank is fixedly connected to the No. 2 support frame, one end of the No. 2 support frame is fixedly connected to the No. 3 electric rod, the telescopic end of the No. 3 electric rod is fixedly connected to the No. 1 guide rail, and the No. 1 guide rail is provided with a torsion component that drives the bellows to twist, and the inner bottom surface of the water tank is provided with the No. 4 electric rod, the telescopic end of the No. 4 electric rod is fixedly connected to the No. 2 guide rail, and the No. 2 guide rail is slidably connected to the No. 4 limit frame.

[0017] Further technical solution: the torsion assembly includes a third limit frame, a rack plate, a motor and a gear;

[0018] The third limiting frame is slidably connected to the first guide rail, a rack plate is arranged on the back of the third limiting frame, a motor is fixedly connected to the upper end face of the first guide rail, a gear is fixedly connected to the output shaft of the motor, and the gear is meshed with the rack plate.

[0019] Further technical solution: the inner walls of the No. 1 limit frame and the No. 3 limit frame are fixedly connected with electromagnets, and the fixed sleeve and the arc-shaped support frame can be adsorbed by the electromagnets, and the side wall of the No. 1 guide rail is fixedly connected with a rubber strip to prevent the corrugated tube from rigidly abutting against the side wall of the No. 1 guide rail when it is bent.

[0020] Further technical solution: the sealing mechanism includes a sealing end cover, a rubber ring, a sleeve and an electric push plate;

[0021] The slide plate is fixedly connected to a sealing end cover, a rubber ring is arranged in a groove on a side wall of the sealing end cover, a sleeve is fixedly connected to an outer wall of the sealing end cover, an electric push plate is slidably and sealingly connected in the sleeve, the electric push plate can slide vertically along the inner wall of the sleeve, the sleeve is connected to the rubber ring, a No. 1 bolt is threadedly connected to the outer wall of the sealing end cover, and the No. 1 air pump is connected to the interior of a sealing end cover; an air pressure sensor is arranged inside one of the sealing end covers.

[0022] Further technical solution: the stretching assembly includes an electric sleeve, a connecting sleeve and a No. 2 bolt;

[0023] The sealing end covers are fixedly connected to electric sleeves, the telescopic ends of the electric sleeves are fixedly connected to connecting sleeves, the connecting sleeves are threadedly connected to No. 2 bolts, one of the electric sleeves is connected to No. 2 air pump, and the two connecting sleeves can be connected to the joints at both ends of the rubber tube respectively.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Start the limiting mechanism and the positioning mechanism to clamp the bellows at the same time. At this time, under the magnetic force of the electromagnet, the elastic component is adsorbed and connected to the limiting mechanism, and the supporting component is adsorbed and connected to the positioning mechanism. The middle part of the bellows is fixed by the supporting component and the positioning mechanism, and there are elastic components and limiting mechanisms on both sides of the positioning mechanism to elastically limit the bellows;

[0026] 2. Start the positioning mechanism to move vertically, and stretch the bellows vertically through the positioning mechanism to observe the sealing performance of the bellows under the stretching condition; start the positioning mechanism to drive the bellows to twist, so as to detect the sealing performance of the bellows under the twisting condition. The support assembly and the positioning mechanism can clamp the bellows inside and outside, so as to improve the clamping stability of the bellows when it moves, and avoid the unstable clamping and shaking of the bellows when it moves, which will cause the water flow in the water tank to mix and affect the bubble observation;

[0027] 3. Inside the bellows, since the inner wall of the No. 3 limit frame is provided with an electromagnet, under the suction of the electromagnet, the arc support frame rotates simultaneously with the No. 3 limit frame, so that the No. 1 guide rail and the No. 3 limit frame always clamp and fix the wall of the bellows; during the rotation process, under the internal support of the arc support frame, it can avoid the external clamping of the No. 3 limit frame in a single direction causing the bellows to sag inward, and avoid the reverse rotation vibration caused by loose clamping during the torsion of the bellows, which affects the observation of the air tightness of the bellows;

[0028] 4. When the limiting mechanism stretches the bellows vertically, the bellows on both sides of the limiting mechanism bend, and the stretched position of the bellows is prone to breakage due to excessive stretching angle. At this time, the airbag in the bellows will increase the fitting area with the bellows as the bellows bends, thereby preventing the bellows from breaking due to excessive stretching angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 It is a schematic diagram of the connection between the fixing seat and the slide plate in the present invention.

[0031] Figure 3 It is a schematic diagram of the structure of the sealing mechanism and the stretching assembly in the present invention.

[0032] Figure 4 It is a schematic diagram of the internal structure of the water tank in the present invention.

[0033] Figure 5 It is a schematic diagram of the structure of the elastic component and the supporting component in the present invention.

[0034] Figure 6 It is a structural schematic diagram of the limiting mechanism in the present invention.

[0035] Figure 7 It is a structural schematic diagram of the positioning mechanism in the present invention.

[0036] Figure 8 It is a schematic diagram of the structure of the torsion assembly in the present invention.

[0037] In the attached figure: 1, water tank; 2, fixing seat; 3, slide plate; 4, sealing mechanism; 41, sealing end cover; 42, rubber ring; 43, sleeve; 44, electric push plate; 45, No. 1 bolt; 5, stretching assembly; 51, electric sleeve; 52, connecting sleeve; 53, No. 2 bolt; 6, elastic assembly; 61, fixing sleeve; 62, airbag; 7, support assembly; 71, rotating tube; 72, telescopic sleeve; 73, arc support frame; 8, limiting mechanism; 81, No. 1 support frame; 82, No. 1 electric rod; 83, No. 1 Limiting frame; 84, No. 2 electric rod; 85, No. 2 limiting frame; 86, rubber pad; 9, positioning mechanism; 91, No. 2 supporting frame; 92, No. 3 electric rod; 93, No. 1 guide rail; 94, torsion assembly; 941, No. 3 limiting frame; 942, rack plate; 943, motor; 944, gear; 95, No. 4 electric rod; 96, No. 2 guide rail; 97, No. 4 limiting frame; 10, electric push seat; 11, rubber tube; 12, No. 1 air pump; 13, No. 2 air pump; 14, electromagnet; 15, rubber strip. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0040] like Figure 1-Figure 8 As shown, the bellows detection test bench provided by the present invention includes a water tank 1, fixed seats 2 are fixedly connected on both sides of the water tank 1, and slide plates 3 are slidably connected to the fixed seats 2. A retractable electric push seat 10 is connected between the slide plates 3 and the fixed seats 2, and sealing mechanisms 4 are fixedly connected to the slide plates 3. The two sealing mechanisms 4 can fix and seal the bellows at both ends of the fixed seats 2. The sealing mechanisms 4 are each provided with a stretching assembly 5, and a rubber tube 11 is provided in the middle of the two stretching assemblies 5. The two stretching assemblies 5 can fix both ends of the rubber tube 11, and one of the sealing mechanisms 4 and one of the stretching assemblies 5 are respectively connected to a No. 1 air pump 12 and a No. 2 air pump 13;

[0041] The rubber tube 11 is connected with two elastic components 6, and a support component 7 is arranged between the two elastic components 6. Under the action of the air pressure in the rubber tube 11, the two elastic components 6 can be elastically squeezed with the inner wall of the bellows, and the support component 7 can rigidly squeeze the inner wall of the bellows. Two limiting mechanisms 8 are respectively arranged in the water tank 1. The two limiting mechanisms 8 are respectively arranged outside the two elastic components 6. The limiting mechanisms 8 can perform vertical elastic limiting on the bellows. A positioning mechanism 9 is arranged between the two limiting mechanisms 8. The positioning mechanism 9 is arranged outside the support component 7. The positioning mechanism 9 can vertically position the bellows by cooperating with the limiting mechanisms 8, and the positioning mechanism 9 can drive the bellows to twist; a pressure sensor is arranged in one of the sealing mechanisms 4;

[0042] The limiting mechanism 8 and the positioning mechanism 9 are both fixedly connected with an electromagnet 14 , the electromagnet 14 is made of metal, and the elastic component 6 and the supporting component 7 can be adsorbed with the electromagnet 14 , and the rubber tube 11 has good shrinkage.

[0043] In this embodiment, when the bellows is tested, one end of the rubber tube 11 is always fixed to one stretching assembly 5, and with the cooperation of the stretching assembly 5, the other end of the rubber tube 11 is passed through the bellows and fixed to another stretching assembly 5, and then the two ends of the bellows are respectively fixed to the sealing mechanisms 4 on both sides and sealed;

[0044] Start the two stretching components 5 to straighten the rubber tube 11, so that the elastic component 6 and the support component 7 are respectively facing the limiting mechanism 8 and the positioning mechanism 9, and start the No. 2 air pump 13, and the No. 2 air pump 13 inflates the elastic component 6 and the support component 7. At this time, the elastic component 6 and the support component 7 are in contact with the inner wall of the bellows; start the limiting mechanism 8 and the positioning mechanism 9 to approach the bellows. At this time, under the adsorption effect of the electromagnet 14, the elastic component 6 is adsorbed and connected with the limiting mechanism 8, and the support component 7 is adsorbed and connected with the positioning mechanism 9. The middle part of the bellows is fixed by the support component 7 and the positioning mechanism 9, and the bellows is elastically limited by the elastic component 6 and the limiting mechanism 8;

[0045] The two electric push seats 10 are started to extend, and the two electric push seats 10 respectively drive the slide plates 3 connected thereto to approach the middle of the water tank 1, so as to put the bellows into the water tank 1. At this time, the limiting mechanism 8 and the positioning mechanism 9 are simultaneously started to push the bellows into the water tank 1 to prevent the bellows from floating;

[0046] Start the No. 1 air pump 12 to increase the air pressure in the bellows, and then observe whether bubbles float upward from the outside of the bellows to determine whether there are cracks in the bellows, thereby detecting the sealing of the bellows;

[0047] Start the positioning mechanism 9 to move vertically, and use the positioning mechanism 9 to vertically stretch the bellows, so as to observe the sealing performance of the bellows under the stretching condition; start the positioning mechanism 9 to drive the bellows to twist, so as to detect the sealing performance of the bellows in the twisted state. The support assembly 7 and the positioning mechanism 9 can clamp the bellows inside and outside, so as to improve the clamping stability of the bellows when it moves, and avoid unstable clamping and shaking of the bellows when it moves, which will cause the water flow in the water tank 1 to mix and affect the bubble observation.

[0048] like Figure 5 As shown, it is a bellows detection test bench provided by the present invention, the elastic component 6 includes a fixing sleeve 61 and an airbag 62, the fixing sleeve 61 is fixed to the outside of the rubber tube 11, the airbag 62 is wrapped around the outside of the fixing sleeve 61, and the fixing sleeve 61 is connected to the rubber tube 11 and the airbag 62.

[0049] In this embodiment, after the No. 2 air pump 13 inflates the rubber tube 11, the airbag 62 elastically abuts against the inner wall of the bellows. When the limiting mechanism 8 elastically clamps the outer wall of the bellows, the airbag 62 can cooperate with the limiting mechanism 8 to increase the stability of the elastic limiting of the bellows, thereby avoiding the bellows being squeezed and deformed to the other side when limited in a single direction, thereby affecting the limiting effect of the bellows.

[0050] like Figure 5 As shown, it is a bellows testing bench provided by the present invention, wherein the support assembly 7 includes a rotating tube 71, a telescopic sleeve 72 and an arc-shaped support frame 73;

[0051] The rubber tube 11 is rotatably connected to a rotating tube 71, and the rubber tube 11 is communicated with the rotating tube 71. The rotating tube 71 is externally communicated with a telescopic sleeve 72, and the telescopic end of the telescopic sleeve 72 is communicated with an arc-shaped support frame 73. The telescopic sleeve 72 is internally provided with an air guide valve for unidirectionally guiding air into the arc-shaped support frame 73.

[0052] In this embodiment, after the No. 2 air pump 13 inflates the rubber tube 11, the telescopic sleeve 72 extends vertically, and the telescopic sleeve 72 drives the arc-shaped support frame 73 to contact the inner wall of the bellows. At this time, the positioning mechanism 9 is clamped on the outside of the bellows. Under the suction force of the electromagnet 14, the arc-shaped support frame 73 and the positioning mechanism 9 jointly clamp and fix the side wall of the bellows.

[0053] like Figure 6 As shown, it is a bellows testing bench provided by the present invention, the limiting mechanism 8 comprises a No. 1 support frame 81, a No. 1 electric rod 82, a No. 1 limiting frame 83, a No. 2 electric rod 84, a No. 2 limiting frame 85 and a rubber pad 86;

[0054] The No. 1 support frame 81 is fixedly connected to the outer wall of the water tank 1, one end of the No. 1 support frame 81 is fixedly connected to the No. 1 electric rod 82, the telescopic end of the No. 1 electric rod 82 is fixedly connected to the No. 1 limiting frame 83, the inner bottom surface of the water tank 1 is fixedly connected to the No. 2 electric rod 84, the telescopic end of the No. 2 electric rod 84 is fixedly connected to the No. 2 limiting frame 85, the No. 2 limiting frame 85 and the No. 1 limiting frame 83 are both facing the elastic component 6, and rubber pads 86 are provided on the end surfaces of the No. 2 limiting frame 85 and the No. 1 limiting frame 83 facing the elastic component 6.

[0055] In this embodiment, the No. 1 electric rod 82 and the No. 2 electric rod 84 are started to extend at the same time, and the No. 1 electric rod 82 and the No. 2 electric rod 84 respectively drive the No. 1 limiting frame 83 and the No. 2 limiting frame 85 connected thereto to clamp the bellows. At this time, the rubber pads 86 on the No. 1 limiting frame 83 and the No. 2 limiting frame 85 are elastically squeezed with the outer wall of the bellows, and at the same time, the air bags 62 on the two fixing sleeves 61 can elastically limit the bellows from the inner wall of the bellows. Under the cooperation of the elastic component 6 and the limiting mechanism 8, the elastic limiting effect of the bellows is increased to prevent the bellows from shaking when moving in water;

[0056] Start the second electric rod 84 and the first electric rod 82 to move in opposite directions at the same time, so that the bellows can be clamped and stretched vertically at the same time. At this time, the rubber tube 11 can be stretched along with the stretching of the bellows, thereby ensuring that the elastic component 6 and the limiting mechanism 8 can be stably matched;

[0057] When the limiting mechanism 8 stretches the bellows vertically, the bellows on both sides of the limiting mechanism 8 bend, and the stretched position of the bellows is prone to breakage due to excessive stretching angle. At this time, the airbag 62 in the bellows will increase the fitting area with the bellows as the bellows bends, thereby preventing the bellows from breaking due to excessive stretching angle.

[0058] like Figure 7 As shown, the bellows detection test bench provided by the present invention, the positioning mechanism 9 includes a No. 2 support frame 91, a No. 3 electric rod 92, a No. 1 guide rail 93, a torsion assembly 94, a No. 4 electric rod 95, a No. 2 guide rail 96 and a No. 4 limit frame 97;

[0059] The outer wall of the water tank 1 is fixedly connected to a No. 2 support frame 91, one end of the No. 2 support frame 91 is fixedly connected to a No. 3 electric rod 92, the telescopic end of the No. 3 electric rod 92 is fixedly connected to a No. 1 guide rail 93, and the No. 1 guide rail 93 is provided with a torsion component 94 for driving the bellows to twist, and the inner bottom surface of the water tank 1 is provided with a No. 4 electric rod 95, the telescopic end of the No. 4 electric rod 95 is fixedly connected to a No. 2 guide rail 96, and the No. 2 guide rail 96 is slidably connected to a No. 4 limit frame 97.

[0060] In this embodiment, the third electric rod 92 and the fourth electric rod 95 are started at the same time, and the third electric rod 92 and the fourth electric rod 95 respectively drive the first guide rail 93 and the second guide rail 96 connected thereto to approach the bellows. At this time, the torsion assembly 94 and the fourth limiting frame 97 clamp the outside of the bellows, and at the same time, the arc support frame 73 squeezes and limits the bellows from the inside of the bellows; the bellows is firmly fixed under the support of the support assembly 7 and the clamping of the positioning mechanism 9;

[0061] The third electric rod 92 and the fourth electric rod 95 are started to move in opposite directions at the same time, so that the bellows can be clamped and stretched vertically at the same time, so as to detect the sealing performance of the bellows in the stretched state.

[0062] like Figure 8 As shown, it is a bellows testing bench provided by the present invention, the torsion assembly 94 includes a third limit frame 941, a rack plate 942, a motor 943 and a gear 944;

[0063] The third limit frame 941 is slidably connected to the first guide rail 93, and a rack plate 942 is provided on the back of the third limit frame 941. A motor 943 is fixedly connected to the upper end face of the first guide rail 93, and a gear 944 is fixedly connected to the output shaft of the motor 943, and the gear 944 is meshed with the rack plate 942.

[0064] In this embodiment, the motor 943 is started to rotate, and the motor 943 drives the gear 944 to rotate. Under the meshing action of the gear 944 and the rack plate 942, the rack plate 942 drives the third limit frame 941 to slide along the first guide rail 93. At this time, the third limit frame 941 and the fourth limit frame 97 drive the clamped bellows to twist, so that the airtightness of the bellows in the twisted state can be observed. At the same time, when the bellows is twisted, the gap on the side wall of the bellows can be enlarged, thereby increasing the bubble surge rate in the gap of the bellows, thereby improving the accuracy of observing the gap position on the bellows.

[0065] like Figure 8 As shown, it is a bellows detection test bench provided by the present invention, the inner walls of the No. 1 limit frame 83 and the No. 3 limit frame 941 are fixedly connected with the electromagnet 14, and the fixed sleeve 61 and the arc support frame 73 can be adsorbed with the electromagnet 14, and the side wall of the No. 1 guide rail 93 is fixedly connected with a rubber strip 15 to prevent the bellows from rigidly abutting against the side wall of the No. 1 guide rail 93 when bending.

[0066] In this embodiment, inside the bellows, since the inner wall of the No. 3 limit frame 941 is provided with an electromagnet 14, under the suction of the electromagnet 14, the arc support frame 73 rotates simultaneously with the No. 3 limit frame 941, so that the No. 1 guide rail 93 and the No. 3 limit frame 941 always clamp and fix the wall of the bellows; in the process of rotation, under the internal support of the arc support frame 73, it is possible to avoid the external clamping of the No. 3 limit frame 941 in a single direction causing the bellows to sink inward, and to avoid the reverse rotation and vibration of the bellows during the torsion process due to loose clamping, which affects the observation of the air tightness of the bellows.

[0067] like Figure 3 As shown, it is a bellows testing bench provided by the present invention, wherein the sealing mechanism 4 comprises a sealing end cover 41, a rubber ring 42, a sleeve 43 and an electric push plate 44;

[0068] The slide plate 3 is fixedly connected to a sealing end cover 41, a rubber ring 42 is provided in a groove on the side wall of the sealing end cover 41, a sleeve 43 is fixedly connected to the outer wall of the sealing end cover 41, an electric push plate 44 is slidably and sealingly connected in the sleeve 43, the electric push plate 44 can slide vertically along the inner wall of the sleeve 43, the sleeve 43 is connected to the rubber ring 42, a No. 1 bolt 45 is threadedly connected to the outer wall of the sealing end cover 41, the No. 1 air pump 12 is connected to the interior of a sealing end cover 41; an air pressure sensor is provided inside one of the sealing end covers 41.

[0069] In this embodiment, the two ends of the bellows are respectively sleeved in the slots on the two sealing end covers 41, and then the No. 1 bolt 45 is twisted to fix the side wall of the bellows with the No. 1 bolt 45, and then the electric push plate 44 is started to slide down, so that the air pressure in the rubber ring 42 increases, so that the rubber ring 42 squeezes the bellows, so that the bellows fits with the side wall of the slot of the sealing end cover 41, thereby ensuring the sealing of the two ends of the bellows; start the No. 1 air pump 12, the No. 1 air pump 12 increases the air pressure inside the bellows, and after the bellows is put into the water, the internal sealing of the bellows is determined by observing whether there are bubbles floating upward in the water tank 1;

[0070] Furthermore, the interior of the sealing end cover 41 is connected to the bellows, and the air tightness of the bellows can be further confirmed by observing the air pressure change of the air pressure sensor.

[0071] like Figure 3 As shown, it is a bellows testing bench provided by the present invention, wherein the stretching assembly 5 comprises an electric sleeve 51, a connecting sleeve 52 and a No. 2 bolt 53;

[0072] The sealing end covers 41 are fixedly connected with electric sleeves 51, and the telescopic ends of the electric sleeves 51 are fixedly connected with connecting sleeves 52. The connecting sleeves 52 are threadedly connected with No. 2 bolts 53. One of the electric sleeves 51 is connected with No. 2 air pump 13, and the two connecting sleeves 52 can be connected to the joints at both ends of the rubber tube 11 respectively.

[0073] In this embodiment, the joints at both ends of the rubber tube 11 are respectively placed into two connecting sleeves 52, and then the electric sleeve 51 is twisted to fix the joints at both ends of the rubber tube 11 to the connecting sleeves 52. At this time, the No. 2 air pump 13 is started, and the No. 2 air pump 13 increases the air pressure in the rubber tube 11 through the electric sleeve 51.

[0074] Working principle:

[0075] When testing the bellows, one end of the rubber tube 11 is always fixed to one stretching assembly 5. With the cooperation of the stretching assembly 5, the other end of the rubber tube 11 is passed through the bellows and fixed to another stretching assembly 5. Then, the two ends of the bellows are respectively fixed and sealed to the sealing mechanisms 4 on both sides. At this time, the rubber tube 11 passes through the bellows, and both ends of the rubber tube 11 and the bellows are fixed and sealed.

[0076] Start the two stretching components 5 to straighten the rubber tube 11. After the rubber tube 11 is pulled to the predetermined position, the elastic component 6 is vertically facing the limit mechanism 8, and the support component 7 is vertically facing the positioning mechanism 9. Start the second air pump 13, and the second air pump 13 inflates the elastic component 6 and the support component 7. At this time, the elastic component 6 and the support component 7 are in contact with the inner wall of the corrugated tube;

[0077] Start the limiting mechanism 8 and the positioning mechanism 9 to clamp the bellows at the same time. At this time, under the adsorption effect of the electromagnet 14, the elastic component 6 is adsorbed and connected with the limiting mechanism 8, and the support component 7 is adsorbed and connected with the positioning mechanism 9. The middle part of the bellows is fixed by the support component 7 and the positioning mechanism 9, and the elastic component 6 and the limiting mechanism 8 are on both sides of the positioning mechanism 9 to elastically limit the bellows;

[0078] The two electric push seats 10 are started to extend, and the two electric push seats 10 respectively drive the slide plates 3 connected thereto to approach the middle of the water tank 1, so as to put the bellows into the water tank 1. At this time, the No. 1 electric rod 82 and the No. 3 electric rod 92 are started to extend at the same time, and the No. 1 electric rod 82 and the No. 3 electric rod 92 push the bellows into the water tank 1 to prevent the bellows from floating;

[0079] Start the No. 1 air pump 12 to increase the air pressure in the bellows, and then observe whether bubbles float upward from the outside of the bellows to determine whether there are cracks in the bellows, thereby detecting the sealing of the bellows;

[0080] Start the positioning mechanism 9 to move vertically, and use the positioning mechanism 9 to vertically stretch the bellows, so as to observe the sealing performance of the bellows under the stretching condition; start the positioning mechanism 9 to drive the bellows to twist, so as to detect the sealing performance of the bellows in the twisted state. The support assembly 7 and the positioning mechanism 9 can clamp the bellows inside and outside, so as to improve the clamping stability of the bellows when it moves, and avoid unstable clamping and shaking of the bellows when it moves, which will cause the water flow in the water tank 1 to mix and affect the bubble observation.

[0081] Specifically, the No. 3 electric rod 92 and the No. 4 electric rod 95 are started at the same time, and the No. 3 electric rod 92 and the No. 4 electric rod 95 respectively drive the No. 1 guide rail 93 and the No. 2 guide rail 96 connected thereto to approach the bellows. At this time, the torsion assembly 94 and the No. 4 limiting frame 97 clamp the outside of the bellows, and at the same time, the arc support frame 73 squeezes and limits the bellows from the inside of the bellows; the bellows is firmly fixed under the clamping action of the support assembly 7 and the positioning mechanism 9;

[0082] Start the third electric rod 92 and the fourth electric rod 95 to move in the opposite direction at the same time, so that the bellows can be clamped and stretched vertically at the same time, so as to detect the sealing performance of the bellows in the stretched state;

[0083] Inside the bellows, since the inner wall of the No. 3 limit frame 941 is provided with an electromagnet 14, under the suction of the electromagnet 14, the arc support frame 73 rotates simultaneously with the No. 3 limit frame 941, so that the No. 1 guide rail 93 and the No. 3 limit frame 941 always clamp and fix the wall of the bellows; during the rotation process, under the internal support of the arc support frame 73, it is possible to avoid the external clamping of the No. 3 limit frame 941 in a single direction so that the bellows is not sunken inward, and to avoid the reverse rotation vibration caused by loose clamping during the torsion of the bellows, which affects the observation of the air tightness of the bellows;

[0084] When the positioning mechanism 9 stretches or twists the bellows, the limiting mechanisms 8 on both sides can cooperate with the elastic component 6 to elastically limit the bellows, thereby reducing the vibration of the bellows when the bellows moves, preventing the bellows from swinging randomly when moving and causing mixing of water flow in the water tank 1.

[0085] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0086] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A bellows testing bench, comprising a water tank (1), wherein both sides of the water tank (1) are fixedly connected to fixed seats (2), each of the fixed seats (2) is slidably connected to a slide plate (3), and a retractable electric push seat (10) is connected between the slide plate (3) and the fixed seat (2), characterized in that: The slide plate (3) is fixedly connected with a sealing mechanism (4), the two sealing mechanisms (4) can fix and seal the corrugated pipe at both ends of the fixing seat (2), the sealing mechanism (4) is provided with a stretching assembly (5), a rubber tube (11) is provided between the two stretching assemblies (5), the two stretching assemblies (5) can fix both ends of the rubber tube (11), one of the sealing mechanisms (4) and one of the stretching assemblies (5) are respectively connected to a first air pump (12) and a second air pump (13); The rubber tube (11) is connected to two elastic components (6), and a support component (7) is arranged between the two elastic components (6). Under the action of the air pressure in the rubber tube (11), the two elastic components (6) can be elastically squeezed with the inner wall of the bellows, and at the same time, the support component (7) can rigidly squeeze the inner wall of the bellows. Two limiting mechanisms (8) are respectively arranged in the water tank (1). The two limiting mechanisms (8) are respectively arranged outside the two elastic components (6). The limiting mechanisms (8) can perform vertical elastic limiting on the bellows. A positioning mechanism (9) is arranged between the two limiting mechanisms (8). The positioning mechanism (9) is arranged outside the support component (7). The positioning mechanism (9) can perform vertical positioning on the bellows by cooperating with the limiting mechanisms (8), and the positioning mechanism (9) can drive the bellows to twist. A pressure sensor is arranged in one of the sealing mechanisms (4); The limiting mechanism (8) and the positioning mechanism (9) are both fixedly connected to an electromagnet (14), and the elastic component (6) and the supporting component (7) are capable of being adsorbed by the electromagnet (14); The first air pump (12) can increase the air pressure in the bellows, and the second air pump (13) can inflate the rubber tube (11), the elastic component (6) and the support component (7).

2. The bellows testing bench according to claim 1, characterized in that: The elastic component (6) comprises a fixing sleeve (61) and an airbag (62); the fixing sleeve (61) is fixed to the outside of the rubber tube (11); the airbag (62) is wrapped around the outside of the fixing sleeve (61); and the fixing sleeve (61) is in communication with the rubber tube (11) and the airbag (62).

3. The bellows testing bench according to claim 2, characterized in that: The support assembly (7) comprises a rotating tube (71), a telescopic sleeve (72) and an arc-shaped support frame (73); The rubber tube (11) is rotatably connected to a rotating tube (71), and the rubber tube (11) is in communication with the rotating tube (71). The rotating tube (71) is externally connected to a telescopic sleeve (72), and the telescopic end of the telescopic sleeve (72) is in communication with an arc-shaped support frame (73). An air guide valve for unidirectionally guiding air into the arc-shaped support frame (73) is provided inside the telescopic sleeve (72).

4. The bellows testing bench according to claim 3 is characterized in that: The limiting mechanism (8) comprises a No. 1 support frame (81), a No. 1 electric rod (82), a No. 1 limiting frame (83), a No. 2 electric rod (84), a No. 2 limiting frame (85) and a rubber pad (86); The first support frame (81) is fixedly connected to the outer wall of the water tank (1); one end of the first support frame (81) is fixedly connected to a first electric rod (82); the telescopic end of the first electric rod (82) is fixedly connected to a first limit frame (83); the inner bottom surface of the water tank (1) is fixedly connected to a second electric rod (84); the telescopic end of the second electric rod (84) is fixedly connected to a second limit frame (85); the second limit frame (85) and the first limit frame (83) are both facing the elastic component (6); and rubber pads (86) are provided on the end surfaces of the second limit frame (85) and the first limit frame (83) facing the elastic component (6).

5. The bellows testing bench according to claim 4, characterized in that: The positioning mechanism (9) comprises a No. 2 support frame (91), a No. 3 electric rod (92), a No. 1 guide rail (93), a torsion assembly (94), a No. 4 electric rod (95), a No. 2 guide rail (96) and a No. 4 limit frame (97); The outer wall of the water tank (1) is fixedly connected to a No. 2 support frame (91); one end of the No. 2 support frame (91) is fixedly connected to a No. 3 electric rod (92); the telescopic end of the No. 3 electric rod (92) is fixedly connected to a No. 1 guide rail (93); a torsion assembly (94) for driving the bellows to torsion is arranged on the No. 1 guide rail (93); a No. 4 electric rod (95) is arranged on the inner bottom surface of the water tank (1); the telescopic end of the No. 4 electric rod (95) is fixedly connected to a No. 2 guide rail (96); and the No. 2 guide rail (96) is slidably connected to a No. 4 limiting frame (97).

6. The bellows testing bench according to claim 5, characterized in that: The torsion assembly (94) comprises a third limiting frame (941), a rack plate (942), a motor (943) and a gear (944); The third limiting frame (941) is slidably connected to the first guide rail (93); a rack plate (942) is provided on the back of the third limiting frame (941); a motor (943) is fixedly connected to the upper end surface of the first guide rail (93); a gear (944) is fixedly connected to the output shaft of the motor (943); and the gear (944) is meshed with the rack plate (942).

7. The bellows testing bench according to claim 6, characterized in that: The inner walls of the No. 1 limiting frame (83) and the No. 3 limiting frame (941) are both fixedly connected with an electromagnet (14), and the fixing sleeve (61) and the arc-shaped support frame (73) are both capable of being adsorbed by the electromagnet (14). The side wall of the No. 1 guide rail (93) is fixedly connected with a rubber strip (15) to prevent the corrugated tube from rigidly abutting against the side wall of the No. 1 guide rail (93) when it is bent.

8. The bellows testing bench according to claim 1, characterized in that: The sealing mechanism (4) comprises a sealing end cover (41), a rubber ring (42), a sleeve (43) and an electric push plate (44); The slide plate (3) is fixedly connected to a sealing end cover (41), a rubber ring (42) is arranged in a groove on a side wall of the sealing end cover (41), a sleeve (43) is fixedly connected to the outer wall of the sealing end cover (41), an electric push plate (44) is slidably and sealingly connected in the sleeve (43), the electric push plate (44) can slide vertically along the inner wall of the sleeve (43), the sleeve (43) is connected to the rubber ring (42), a No. 1 bolt (45) is threadedly connected to the outer wall of the sealing end cover (41), and the No. 1 air pump (12) is connected to the interior of one of the sealing end covers (41); an air pressure sensor is arranged inside one of the sealing end covers (41).

9. The bellows testing bench according to claim 8, characterized in that: The stretching assembly (5) comprises an electric sleeve (51), a connecting sleeve (52) and a No. 2 bolt (53); The sealing end covers (41) are fixedly connected to electric sleeves (51), and the telescopic ends of the electric sleeves (51) are fixedly connected to connecting sleeves (52), and the connecting sleeves (52) are threadedly connected to a second bolt (53). One of the electric sleeves (51) is connected to a second air pump (13), and the two connecting sleeves (52) can be connected to joints at both ends of the rubber tube (11) respectively.

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