A frequency converter housing strength testing device

Abstract

The present invention discloses a frequency converter housing strength detection device, including a detection fixture, an oil control component and a frame, wherein the detection fixture is arranged above the frame, the detection fixture is symmetrically arranged on both sides of the frame, and the frame is arranged on the side of the detection fixture. The present invention belongs to the technical field of frequency converter housing strength detection; the present invention transmits the frequency converter housing to between two detection fixtures through the conveyor belt of the frame, starts the oil tank cylinder of the oil control component, pushes the push rod oil cylinder piston to move through the oil tank cylinder, and the push rod oil cylinder piston pushes the sleeve oil cylinder piston forward, and pushes the hydraulic oil of the push rod oil cylinder and the sleeve oil cylinder into the push rod oil tank and the sleeve oil tank respectively, thereby completing the frequency converter housing strength detection. When the frequency converter housing is unqualified, the laser baffle on the rear side of the detection sleeve will block the laser of the laser reflector, and then the laser receiver starts the push cylinder to remove the unqualified frequency converter housing.

Description

Technical Field

[0001] The invention belongs to the technical field of inverter shell strength detection, and in particular refers to an inverter shell strength detection device. Background Art

[0002] Existing frequency converters generally have the problem of short service life, the main reason for which is that the quality of the frequency converter housing cannot meet existing needs. Therefore, after the frequency converter housing is produced, the hardness and strength of the housing need to be tested.

[0003] However, the existing inverter housing detection device has low working efficiency when performing strength detection on the inverter housing because the detection is carried out through several processes, and it is unable to fully fit the surface of the inverter housing for irregular inverter housings, resulting in a narrow detection range and incomplete detection results. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a frequency converter housing strength detection device, which effectively solves the above problem.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a frequency converter housing strength detection device, including a detection fixture, an oil control component and a frame, the detection fixture is arranged above the frame, the detection fixture is symmetrically arranged on both sides of the frame, and the oil control component is arranged on the side of the detection fixture.

[0006] Furthermore, the detection fixture includes a detection rod and a sub-control compression box, the detection rod rectangular array is arranged on the sub-control compression box, the detection rod includes a detection telescopic rod and a detection shaft sleeve, the detection telescopic rod slides in the detection shaft sleeve, and a telescopic rod spring is provided at the end of the detection telescopic rod, and the telescopic rod spring is located inside the detection shaft sleeve.

[0007] Furthermore, a sleeve top plate is provided at the front end of the detection sleeve, a sleeve spring is provided on the front side of the sleeve top plate, a laser baffle is provided at the bottom of the detection sleeve, an oil hole is provided at the inner end of the detection sleeve, and the oil hole runs through the interior of the detection sleeve.

[0008] Furthermore, a partition plate is provided in the center of the sub-control compression box, which divides the sub-control compression box into a sleeve oil tank and a push rod oil tank. The sleeve oil tank is located on the front side of the sub-control compression box, and the push rod oil tank is located on the rear side of the sleeve oil tank. One end of the detection sleeve having an oil hole is located in the push rod oil tank, and the laser baffle is located outside the rear side of the push rod oil tank.

[0009] Furthermore, a top plate sleeve is provided in the sleeve oil tank, a chamber is provided on the front side of the top plate sleeve, a sleeve sleeve is provided on the rear side of the chamber, the sleeve top plate slides in the chamber, the front end of the sleeve spring is fixed on the inner wall on the front side of the top plate sleeve, the sleeve of the detection sleeve slides in the sleeve sleeve, and an oil groove is provided on the top plate sleeve and the sleeve sleeve that runs through the two.

[0010] Furthermore, the detection fixture also includes a laser reflector and a laser receiver, and the light emitted by the laser reflector passes through the gap of the laser baffle and irradiates the laser receiver.

[0011] Furthermore, the oil control assembly includes a push rod cylinder and a sleeve cylinder, the push rod cylinder is connected to the push rod oil tank, the sleeve cylinder is connected to the sleeve oil tank, and oil replenishing pipes are provided on the top of the push rod cylinder and the sleeve cylinder, and the oil replenishing pipes are connected to an external oil tank.

[0012] Furthermore, a push rod cylinder piston is provided inside the push rod cylinder, a top plate spring is provided at the front end of the push rod cylinder piston, a piston top plate is provided at the front end of the top plate spring, the piston top plate slides in the push rod cylinder, a piston bottom plate is provided at the rear end of the push rod cylinder piston, and an oil tank cylinder is provided on the rear side of the piston bottom plate.

[0013] Furthermore, a sleeve cylinder piston is provided inside the sleeve cylinder, a threaded adjustment plate is provided on the piston rod of the sleeve cylinder piston, the threaded adjustment plate is connected to the piston rod of the sleeve cylinder piston by threads, a top plate spring 2 is provided at the front end of the sleeve cylinder piston, a piston top plate 2 is provided at the front end of the top plate spring 2, and the piston top plate 2 slides in the sleeve cylinder.

[0014] Furthermore, a conveyor belt is provided in the center of the frame, the sub-control compression boxes are symmetrically arranged on both sides of the conveyor belt, a pushing cylinder is provided on the right side of the frame, a material unloading baffle is arranged on the left side of the conveyor belt, and the pushing cylinder is connected to a laser receiver.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows:

[0016] 1. The conveyor belt conveys the inverter housing to be tested between two testing fixtures, and pushes the push rod cylinder piston through the oil tank cylinder to push the hydraulic oil inside the push rod cylinder into the push rod oil tank. The hydraulic oil in the push rod oil tank enters the detection sleeve through the oil hole, and then pushes the detection telescopic rod forward, and then the detection telescopic rod fixes the inverter housing. At this time, each detection telescopic rod exerts the same pressure on the inverter housing, and can fix irregular inverter housings. At the same time, the push rod oil tank gives the detection sleeve backward pressure, but at this time the rear side of the sleeve top plate is blocked by the sleeve sleeve, making the top plate sleeve unable to move, thereby achieving the technical effect of fixing irregular inverter housings.

[0017] 2. When the helix lead angle of the thread is less than or equal to the friction angle, the thread will self-lock. According to the principle of thread self-locking, the thread adjustment plate is fixed on the piston of the sleeve cylinder and can only be moved by rotating the thread adjustment plate. As the oil tank cylinder pushes, the piston bottom plate of the push rod cylinder piston will push the thread adjustment plate forward, and then the thread adjustment plate drives the sleeve cylinder piston forward and pushes the hydraulic oil in the sleeve cylinder into the sleeve oil tank. The hydraulic oil in the sleeve oil tank passes through the oil groove and applies pressure to the sleeve top plate. The elastic coefficients of the top plate spring 1 and the top plate spring 2 are different. Under the same elongation, the pressure given by the sleeve cylinder piston is greater than the pressure given by the push rod cylinder piston. The sleeve spring on the front side of the sleeve top plate is compressed, thereby reducing the volume between the detection rod and the detection sleeve, that is, increasing the pressure of the detection telescopic rod on the inverter housing, thereby achieving the technical effect of inverter housing strength detection.

[0018] 3. By changing the position of the threaded adjustment plate, the pressure applied to the inverter housing is adjusted. If the inverter housing is unqualified, it will sink under the action of pressure, causing the detection telescopic rod to move forward, and the volume between the detection telescopic rod and the detection sleeve will increase. In order to balance the pressure reduction caused by the increase in volume, the detection sleeve will move forward, and then the laser baffle at the tail of the detection sleeve will move forward, and then the gaps in the same row of laser baffles are no longer in a straight line. The light emitted by the laser reflector is blocked by the laser baffle, and the laser receiver cannot receive the light signal. After the inspection is completed, while the conveyor belt drives the inverter housing forward, the laser receiver sends a signal, and then the push cylinder is started, pushing the unqualified inverter housing down from the unloading baffle and recovering it in the unqualified box. The qualified inverter housing will not trigger the push cylinder, and then move forward with the conveyor belt, thereby achieving the technical effect of removing defective inverter housings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of a frequency converter housing strength detection device proposed by the present invention;

[0020] Figure 2 A top view of a frequency converter housing strength detection device proposed by the present invention;

[0021] Figure 3 for Figure 2 A cross-sectional view along the cutting line AA;

[0022] Figure 4 for Figure 2 A cross-sectional view along the cutting line BB;

[0023] Figure 5 for Figure 2 A cross-sectional view along the cutting line CC;

[0024] Figure 6 for Figure 3A partial enlarged view of part D in FIG.

[0025] Figure 7 for Figure 5 A partial enlarged view of part E in FIG.

[0026] Among them, 1. detection fixture, 11. detection rod, 111. detection telescopic rod, 1111. telescopic rod spring, 112. detection sleeve, 1121. sleeve top plate, 1122. sleeve spring, 1123. laser baffle, 1124. oil hole, 12. sub-control compression box, 121. sleeve oil tank, 1211. top plate sleeve, 1212. sleeve sleeve, 1213. oil groove, 1214. chamber, 122. push rod oil tank, 13. Laser reflector, 14. Laser receiver, 2. Oil control assembly, 21. Push rod cylinder, 22. Bushing cylinder, 23. Push rod cylinder piston, 231. Piston top plate one, 232. Top plate spring one, 233. Piston bottom plate, 24. Bushing cylinder piston, 241. Threaded adjustment plate, 242. Piston top plate two, 243. Top plate spring two, 25. Oil tank cylinder, 3. Rack, 31. Conveyor belt, 32. Push cylinder, 33. Unloading baffle.

[0027] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] like Figure 1-Figure 7 As shown, the present invention proposes a frequency converter housing strength detection device, comprising a detection fixture 1, an oil control component 2 and a frame 3, wherein the detection fixture 1 is arranged above the frame 3, the detection fixture 1 is symmetrically arranged on both sides of the frame 3, and the oil control component 2 is arranged on the side of the detection fixture 1.

[0030] The detection fixture 1 includes a detection rod 11 and a sub-control compression box 12. The detection rod 11 is arranged in a rectangular array on the sub-control compression box 12. The detection rod 11 includes a detection telescopic rod 111 and a detection shaft sleeve 112. The detection telescopic rod 111 slides in the detection shaft sleeve 112. A telescopic rod spring 1111 is provided at the end of the detection telescopic rod 111, and the telescopic rod spring 1111 is located inside the detection shaft sleeve 112.

[0031] A sleeve top plate 1121 is provided at the front end of the detection sleeve 112, a sleeve spring 1122 is provided on the front side of the sleeve top plate 1121, a laser baffle 1123 is provided at the bottom of the detection sleeve 112, an oil hole 1124 is provided at the inner end of the detection sleeve 112, and the oil hole 1124 runs through the interior of the detection sleeve 112.

[0032] A partition is provided in the center of the sub-control compression box 12, which divides the sub-control compression box 12 into a sleeve oil tank 121 and a push rod oil tank 122. The sleeve oil tank 121 is located on the front side of the sub-control compression box 12, and the push rod oil tank 122 is located on the rear side of the sleeve oil tank 121. The detection sleeve 112 is provided with an oil hole 1124 at one end thereof, and the laser baffle 1123 is located on the rear side of the push rod oil tank 122.

[0033] A top plate sleeve 1211 is provided in the sleeve oil tank 121, a chamber 1214 is provided on the front side of the top plate sleeve 1211, a sleeve sleeve 1212 is provided on the rear side of the chamber 1214, the sleeve top plate 1121 slides in the chamber 1214, the front end of the sleeve spring 1122 is fixed on the front inner wall of the top plate sleeve 1211, the sleeve of the detection sleeve 112 slides in the sleeve sleeve 1212, and an oil groove 1213 running through the top plate sleeve 1211 and the sleeve sleeve 1212 is provided.

[0034] The detection fixture 1 further includes a laser reflector 13 and a laser receiver 14 . The light emitted by the laser reflector 13 passes through the gap of the laser baffle 1123 and irradiates the laser receiver 14 .

[0035] The oil control assembly 2 includes a push rod cylinder 21 and a sleeve cylinder 22. The push rod cylinder 21 is connected to the push rod oil tank 122, and the sleeve cylinder 22 is connected to the sleeve oil tank 121. Oil replenishing pipes are provided on the tops of the push rod cylinder 21 and the sleeve cylinder 22, and the oil replenishing pipes are connected to the external oil tank.

[0036] A push rod cylinder piston 23 is provided inside the push rod cylinder 21, a top plate spring 232 is provided at the front end of the push rod cylinder piston 23, a piston top plate 231 is provided at the front end of the top plate spring 232, the piston top plate 231 slides in the push rod cylinder 21, a piston bottom plate 233 is provided at the rear end of the push rod cylinder piston 23, and an oil tank cylinder 25 is provided on the rear side of the piston bottom plate 233.

[0037] A sleeve cylinder piston 24 is provided inside the sleeve cylinder 22, and a threaded adjustment plate 241 is provided on the piston rod of the sleeve cylinder piston 24. The threaded adjustment plate 241 is connected to the piston rod of the sleeve cylinder piston 24 through threads. A top plate spring 243 is provided at the front end of the sleeve cylinder piston 24, and a piston top plate 242 is provided at the front end of the top plate spring 243. The piston top plate 242 slides in the sleeve cylinder 22.

[0038] A conveyor belt 31 is provided in the center of the frame 3, and the sub-control compression box 12 is symmetrically arranged on both sides of the conveyor belt 31. A pushing cylinder 32 is provided on the right side of the frame 3, and a unloading baffle 33 is arranged on the left side of the conveyor belt 31. The pushing cylinder 32 is connected to the laser receiver 14.

[0039] During specific use, the conveyor belt 31 conveys the inverter housing to be tested to between the two testing fixtures 1, the oil tank cylinder 25 is started, and pushes the push rod cylinder piston 23 forward, and the forward-moving push rod cylinder piston 23 pushes the hydraulic oil inside the push rod cylinder 21 into the push rod oil tank 122, and the hydraulic oil in the push rod oil tank 122 enters the detection sleeve 112 through the oil hole 1124, thereby pushing the detection telescopic rod 111 forward, and then the detection telescopic rod 111 fixes the inverter housing. At this time, each detection telescopic rod 111 has the same pressure on the inverter housing, and at the same time, the push rod oil tank 122 gives the detection sleeve 112 backward pressure, but at this time the rear side of the sleeve top plate 1121 is blocked by the sleeve sleeve 1212, so that the top plate sleeve 1211 cannot move.

[0040] As the oil tank cylinder 25 is pushed forward, when the piston bottom plate 233 of the push rod oil cylinder piston 23 moves to the threaded adjustment plate 241 of the sleeve oil cylinder piston 24, the threaded adjustment plate 241 will be pushed forward, and then the threaded adjustment plate 241 will drive the sleeve oil cylinder piston 24 to move forward, and push the hydraulic oil in the sleeve oil cylinder 22 into the sleeve oil tank 121. The hydraulic oil in the sleeve oil tank 121 passes through the oil groove 1213 and applies pressure on the sleeve top plate 1121. The elastic coefficients of the top plate spring 1 232 and the top plate spring 2 243 are different. Under the same elongation, the pressure given by the sleeve oil cylinder piston 24 is greater than the pressure given by the push rod oil cylinder piston 23. The sleeve spring 1122 on the front side of the sleeve top plate 1121 is compressed, thereby reducing the volume between the detection rod 11 and the detection sleeve 112, that is, increasing the pressure of the detection telescopic rod 111 on the inverter housing, that is, performing strength detection on the inverter housing.

[0041] If the inverter housing is unqualified, the inverter housing will be dented under the pressure of the detection telescopic rod 111, which will cause the detection telescopic rod 111 to move forward, and the volume between the detection telescopic rod 111 and the detection sleeve 112 will increase. In order to balance the pressure reduction caused by the increase in volume, the detection sleeve 112 will move forward, and then the laser baffle 1123 at the tail of the detection sleeve 112 will move forward, and then the gap between the laser baffles 1123 in the same row will no longer be in a straight line, and the light emitted by the laser reflector 13 will be blocked by the laser baffle 1123, and the laser receiver 14 cannot receive the light signal. After the inspection is completed, while the conveyor belt 31 drives the inverter housing forward, the laser receiver 14 sends a signal, and then the pushing cylinder 32 is started, and the unqualified inverter housing is pushed down from the unloading baffle 33 and recovered by the unqualified box. The qualified inverter housing will not trigger the pushing cylinder 32, and then move forward with the conveyor belt 31.

[0042] Before the device is put into operation, the standard sample of the inverter housing to be tested is placed on the two testing fixtures 1, and the oil supply pipes on the top of the push rod cylinder 21 and the sleeve cylinder 22 are opened for adjustment to ensure that the push rod cylinder 21 has sufficient oil and can provide appropriate oil pressure when the testing rod 11 is working. At the same time, the threaded adjustment plate 241 is rotated to move it. By changing the position of the threaded adjustment plate 241, the pressure applied to the inverter housing is adjusted.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

[0045] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A frequency converter housing strength testing device, characterized in that: The invention comprises a detection fixture (1), an oil control component (2) and a frame (3), wherein the detection fixture (1) is arranged above the frame (3), the detection fixture (1) is symmetrically arranged on both sides of the frame (3), and the oil control component (2) is arranged on the side of the detection fixture (1); The detection fixture (1) comprises a detection rod (11) and a sub-control compression box (12); the detection rods (11) are arranged in a rectangular array on the sub-control compression box (12); the detection rods (11) comprise a detection telescopic rod (111) and a detection shaft sleeve (112); the detection telescopic rod (111) slides in the detection shaft sleeve (112); a telescopic rod spring (1111) is provided at the end of the detection telescopic rod (111); and the telescopic rod spring (1111) is located inside the detection shaft sleeve (112); A sleeve top plate (1121) is provided at the front end of the detection sleeve (112), a sleeve spring (1122) is provided at the front side of the sleeve top plate (1121), a laser baffle (1123) is provided at the bottom of the detection sleeve (112), and an oil hole (1124) is provided at the inner end of the detection sleeve (112), and the oil hole (1124) runs through the interior of the detection sleeve (112); A partition plate is provided at the center of the sub-control compression box (12), and the partition plate divides the sub-control compression box (12) into a sleeve oil tank (121) and a push rod oil tank (122); the sleeve oil tank (121) is located at the front side of the sub-control compression box (12), and the push rod oil tank (122) is located at the rear side of the sleeve oil tank (121); one end of the detection sleeve (112) having an oil hole (1124) is located in the push rod oil tank (122), and the laser baffle (1123) is located outside the rear side of the push rod oil tank (122); A top plate sleeve (1211) is provided in the shaft sleeve oil tank (121), a chamber (1214) is provided on the front side of the top plate sleeve (1211), a shaft sleeve sleeve (1212) is provided on the rear side of the chamber (1214), the shaft sleeve top plate (1121) slides in the chamber (1214), a front end of the shaft sleeve spring (1122) is fixed on the front inner wall of the top plate sleeve (1211), a sleeve of the detection shaft sleeve (112) slides in the shaft sleeve sleeve (1212), and an oil groove (1213) penetrating the top plate sleeve (1211) and the shaft sleeve sleeve (1212) is provided on both. The detection fixture (1) further comprises a laser reflector (13) and a laser receiver (14); light emitted by the laser reflector (13) passes through the gap of the laser baffle (1123) and irradiates the laser receiver (14); The oil control assembly (2) comprises a push rod oil cylinder (21) and a shaft sleeve oil cylinder (22), wherein the push rod oil cylinder (21) is connected to a push rod oil tank (122), and the shaft sleeve oil cylinder (22) is connected to the shaft sleeve oil tank (121), and oil replenishing pipes are provided at the tops of the push rod oil cylinder (21) and the shaft sleeve oil cylinder (22), and the oil replenishing pipes are connected to an external oil tank; A push rod cylinder piston (23) is provided inside the push rod cylinder (21); a top plate spring (232) is provided at the front end of the push rod cylinder piston (23); a piston top plate (231) is provided at the front end of the top plate spring (232); the piston top plate (231) slides in the push rod cylinder (21); a piston bottom plate (233) is provided at the rear end of the push rod cylinder piston (23); and an oil tank cylinder (25) is provided at the rear side of the piston bottom plate (233); A sleeve cylinder piston (24) is provided inside the sleeve cylinder (22); a threaded adjustment plate (241) is provided on the piston rod of the sleeve cylinder piston (24); the threaded adjustment plate (241) is connected to the piston rod of the sleeve cylinder piston (24) via threads; a second top plate spring (243) is provided at the front end of the sleeve cylinder piston (24); a second piston top plate (242) is provided at the front end of the second top plate spring (243); and the second piston top plate (242) slides in the sleeve cylinder (22).

2. The inverter housing strength detection device according to claim 1 is characterized in that: A conveyor belt (31) is provided at the center of the frame (3), the sub-control compression boxes (12) are symmetrically arranged on both sides of the conveyor belt (31), a material pushing cylinder (32) is provided on the right side of the frame (3), a material unloading baffle (33) is provided on the left side of the frame (3), and the material pushing cylinder (32) is connected to a laser receiver (14).

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