Control cabinet test device

Abstract

The utility model discloses a control cabinet testing device. The control cabinet testing device comprises a workbench; a hydraulic mechanism; the clamping mechanism comprises two bidirectional lead screws, the two ends of each bidirectional lead screw are rotationally connected with mounting plates, the mounting plates are fixed to the bottom face of the workbench, each bidirectional lead screw comprises two sections of threads opposite in screwing direction, each section of thread is provided with a nut, each nut is connected with a sliding block, and the sliding blocks are connected with the two ends of each bidirectional lead screw. A through sliding groove is formed in the top face of the workbench, the sliding block is connected with the sliding groove in a sliding mode, and a clamping plate is arranged on the sliding block. The hydraulic mechanism is used for detecting and testing the structural strength of the control cabinet, the two bidirectional lead screws are arranged to control the four clamping plates to clamp the control cabinet from the four side faces of the control cabinet at the same time, the control cabinet can be located in the center of the workbench, and therefore the pressing blocks apply pressure to the center of the side faces of the control cabinet, and the control cabinet is more stable. The stress is more uniform, and the detection test result is more accurate.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection, in particular to a control cabinet test device. Background Art

[0002] The control cabinet is the control center of the elevator, which contains various electrical circuits such as control relays, contactors, transformers, counters, PLCs, explosion-proof safety barriers, and wiring terminals. Various signal instructions from the elevator shaft, machine room, and car enter the elevator control cabinet through various cables and are collected in the cabinet. The control cabinet stipulates various action procedures of the elevator, determines the elevator's working status, running direction, signal display, circuit protection and other functions. The explosion-proof performance of the control cabinet must comply with standards such as GB3836.1, GB3836.2 and GB3836.4, and the shell protection should not be lower than IP44 level.

[0003] Flameproof and intrinsically safe are the two most common types of explosion-proof control cabinets. Flameproof products are a type of strength-type explosion-proof products. The shell of the flameproof explosion-proof control cabinet can be cast or welded with steel plates. It is often used for explosion-proof of strong electric systems. Its shell can withstand the internal explosion of the flammable mixture that penetrates into the shell through any joint surface or structural gap of the shell without damage, and will not cause the ignition of the external explosive environment formed by one or more gases or vapors.

[0004] The control cabinet has certain requirements for its structural strength, especially the explosion-proof control cabinet welded from steel plates, which has higher requirements for its structural strength. When the factory produces the control cabinet, it is necessary to test the compressive strength of the control cabinet body to determine whether its structural strength is qualified.

[0005] The Chinese utility model patent with publication number CN214149880U discloses a strength detection device for an air-conditioning control cabinet, comprising a base plate, a fixed plate fixedly installed at the top center of the base plate, and a placement groove is opened on the top of the fixed plate, a U-shaped plate is fixedly connected to the top of the base plate, and a fixing rod is fixedly connected to the inner wall of one side of the U-shaped plate, a first clamping plate is welded to the end of the fixing rod away from the U-shaped plate, an outer shell is fixedly installed on the outer wall of the other side of the U-shaped plate, and movable plates are slidably connected to the inner walls at both ends of the outer shell, and a servo motor is fixedly installed at the center of the movable plate.

[0006] Although this control cabinet strength testing device can fix the control cabinet, it is difficult to ensure that pressure is applied to the center of the test surface of the control cabinet, which can easily lead to inaccurate test results. Utility Model Content

[0007] The purpose of the utility model is to provide a control cabinet test device in view of the problems existing in the prior art.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A control cabinet test device, comprising:

[0010] Workbench, used to place the control cabinet;

[0011] The hydraulic mechanism includes a hydraulic cylinder vertically installed just above the workbench, a pressure sensor is provided on the piston rod of the hydraulic cylinder, a pressure block is provided at the bottom end of the pressure sensor, and the pressure block is driven by the hydraulic cylinder to apply pressure to the control cabinet to be tested, so as to perform a control cabinet structural strength test, and the pressure sensor located between the pressure block and the hydraulic cylinder is used to detect the pressure applied by the pressure block to the control cabinet;

[0012] The clamping mechanism comprises two bidirectional screw rods arranged in the horizontal direction and perpendicular to each other, both ends of the bidirectional screw rods are rotatably connected with mounting plates, the mounting plates are fixed to the bottom surface of the workbench, the bidirectional screw rods comprise two sections of threads with opposite rotation directions, each section of the threads is provided with a nut, each nut is connected with a slide block, a through slide groove is provided on the top surface of the workbench, the slide block is passed through the slide groove and slidably connected to the slide groove, a clamping plate for clamping the control cabinet is provided on the slide block, and the pressure block is located directly above the center of the enclosed area of ​​the four clamping plates; through the slider and the slide block provided The grooves cooperate so that the nut and the clamping plate connected to the slider can only move along the length direction of the slide groove. By rotating the bidirectional lead screw, the two nuts on the same bidirectional lead screw can be driven to move closer to or farther from each other, thereby driving the corresponding clamping plates to move closer to or farther from each other, thereby enabling the control cabinet to be clamped from two corresponding sides at the same time. By setting two bidirectional lead screws, the four sides of the control cabinet can be clamped and fixed at the same time, thereby fixing the control cabinet in the center of the workbench, so that the pressure block can apply pressure to the center of the surface to be tested of the control cabinet, the side force of the control cabinet is more uniform, and the detection result is more accurate.

[0013] The utility model is used for the structural strength detection of the control cabinet through the hydraulic mechanism provided, and by providing two bidirectional screw rods, four clamping plates are controlled to clamp the control cabinet from four sides at the same time, so that the control cabinet can be located in the center of the workbench, so that the pressure block applies pressure to the center of the side surface of the control surface, so that the force is more uniform and the detection result is more accurate.

[0014] Furthermore, a wheel disc is fixed to the end face of one end of the bidirectional screw rod, and a penetrating screw hole is opened on the side of the wheel disc, and a screw rod is threadedly connected to the screw hole, and the screw rod abuts against the mounting plate. By setting the screw rod to abut the mounting plate, the bidirectional screw rod can be locked to prevent it from rotating, and then the position of the clamping plate can be fixed, so that the clamping plate clamps the control cabinet to prevent the control cabinet from moving during the detection process.

[0015] Furthermore, a gripping rod is provided at one end of the screw rod away from the mounting plate, and the gripping rod is provided to facilitate the screw rod to be turned and the bidirectional screw rod to be locked.

[0016] Furthermore, a rocker is rotatably provided on the side edge of the wheel away from the bidirectional screw rod, so as to facilitate the rotation of the wheel wheel, thereby driving the bidirectional screw rod to rotate and controlling the movement of the splint.

[0017] Furthermore, a horizontal top plate is provided directly above the workbench through two side plates, and the hydraulic cylinder is installed on the bottom surface of the top plate.

[0018] Furthermore, a control component for controlling the hydraulic cylinder is provided on the workbench, and the control component is electrically connected to the hydraulic cylinder and the pressure sensor.

[0019] Furthermore, a two-hand start button is provided on the side of the workbench, and the two-hand start button is electrically connected to the control component and is used to start the hydraulic cylinder for detection, while also protecting the operator's hands.

[0020] Furthermore, support legs are provided at the four corners of the bottom surface of the workbench for supporting the workbench.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] The utility model is used for the structural strength detection test of the control cabinet through the hydraulic mechanism provided, and by providing two bidirectional screw rods, four clamping plates are controlled to clamp the control cabinet from four sides at the same time, so that the control cabinet can be located in the center of the workbench, so that the pressure block applies pressure to the center of the side surface of the control surface, so that the force is more uniform and the result of the detection test is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of a control cabinet test device in this embodiment;

[0024] Figure 2 This is a diagram showing the relationship between the position of the slide and the workbench in this embodiment;

[0025] In the figure: 1. workbench; 2. hydraulic mechanism; 201. hydraulic cylinder; 202. pressure sensor; 203. pressure block; 3. clamping mechanism; 301. bidirectional screw; 302. mounting plate; 303. nut; 304. slider; 305. slide groove; 306. clamping plate; 4. wheel; 5. screw; 6. grip; 7. rocker; 8. side panel; 9. top panel; 10. two-hand start button; 11. guide cylinder. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1 As shown, this embodiment provides a control cabinet test device, including: a workbench 1, a hydraulic mechanism 2 and a clamping mechanism 3.

[0028] The workbench 1 is used to place the control cabinet and conduct control cabinet tests. Support legs (not shown in the figure) are provided at the four corners of the bottom surface of the workbench 1, which are used to support the workbench 1 and facilitate the setting of a clamping mechanism 3 under the workbench 1; a horizontal top plate 9 is provided directly above the workbench 1 through two side panels 8, and the two side panels 8 are vertically arranged and parallel to each other. The two side panels 8 are located on both sides of the top surface of the workbench 1.

[0029] The hydraulic mechanism 2 includes a hydraulic cylinder 201 vertically installed just above the workbench 1. Specifically, the hydraulic cylinder 201 is installed at the center of the bottom surface of the top plate 9. A pressure sensor 202 is provided on the piston rod of the hydraulic cylinder 201. A pressure block 203 is provided at the bottom end of the pressure sensor 202. The hydraulic cylinder 201 drives the pressure block 203 to apply pressure to the control cabinet to be tested, so as to test the structural strength of the control cabinet. The pressure sensor 202 located between the pressure block 203 and the hydraulic cylinder 201 is used to detect the pressure applied by the pressure block 203 to the control cabinet.

[0030] The clamping mechanism 3 includes two bidirectional screw rods 301 arranged in a horizontal direction and perpendicular to each other. Both ends of the bidirectional screw rods 301 are rotatably connected to the bottom surface of the workbench 1 through a mounting plate 302. Specifically, the mounting plate 302 is fixed to the bottom surface of the workbench 1, and the bidirectional screw rod 301 is rotatably connected to the mounting plate 302 through a rotating shaft; the bidirectional screw rod 301 includes two sections of threads with opposite rotation directions, and each section of the thread is provided with a nut 303, and each nut 303 is fixedly connected to an "I"-shaped slider 304, such as Figure 2As shown, the top surface of the workbench 1 is provided with two through slide grooves 305, the two slide grooves 305 are perpendicular to each other and intersect, the intersection is located in the middle of the two slide grooves 305, and the hydraulic cylinder 201 is located just above the intersection of the two slide grooves 305; the slider 304 is inserted into its corresponding slide groove 305 and slidably connected in the slide groove 305, the slider 304 is in contact with both the top and bottom surfaces of the workbench 1, and the opposite sides of the two sliders 304 are provided with clamping plates 306 for clamping the control cabinet; the pressing block 203 is located just above the center of the enclosed area of ​​the four clamping plates 306, the clamping plates 306 are vertically arranged, and the four clamping plates 306 correspond to the four vertical sides of the control cabinet one by one and are parallel to the corresponding sides; through the set sliding The block 304 cooperates with the slide groove 305 so that the nut 303 and the clamping plate 306 connected to the slider 304 can only move along the length direction of the slide groove 305. By rotating the bidirectional screw rod 301, the two nuts 303 located on the same bidirectional screw rod can be driven to move closer to or farther from each other, thereby driving the corresponding clamping plates 306 to move closer to or farther from each other, so that the control cabinet can be clamped from the corresponding two sides at the same time. By setting two bidirectional screw rods 301, the four sides of the control cabinet can be clamped and fixed at the same time, so that the control cabinet can be fixed in the center of the workbench 1, so that the pressure block 203 can apply pressure to the center of the surface to be tested of the control cabinet, the side force of the control cabinet belt is more uniform, and the detection result is more accurate.

[0031] The utility model is used for detecting the structural strength of the control cabinet by setting up a hydraulic mechanism 2. By setting up two bidirectional screw rods 301, four clamping plates 306 are controlled to clamp the control cabinet from four sides at the same time, so that the control cabinet can be located in the center of the workbench 1, so that the pressure block 203 applies pressure to the center of the side surface of the control surface, so that the force is more uniform and the detection result is more accurate.

[0032] Furthermore, a wheel disc 4 is fixed to the end face of the bidirectional screw rod 301 at one end, a screw hole is provided on the side of the wheel disc 4, a screw rod 5 is connected with the inner thread of the screw hole, the screw rod 5 abuts against the mounting plate 302, and a guide cylinder 11 for guiding the screw rod 5 is also provided on the side of the wheel disc 4, the guide cylinder 11 is fixed to the side of the wheel disc 4 close to the mounting plate 302, the screw rod 5 is passed through the guide cylinder 11, and a gap is left between the guide cylinder 11 and the mounting plate 302; by the set screw rod 5 abutting against the mounting plate 302, the bidirectional screw rod 301 can be locked to prevent it from rotating, and then the position of the clamping plate 306 can be fixed, so that the clamping plate 306 clamps the control cabinet to prevent the control cabinet from moving during the detection process; when the screw rod 5 is out of contact with the mounting plate 302, the bidirectional screw rod 301 is unlocked and can rotate.

[0033] Furthermore, a gripping rod 6 is provided at one end of the screw rod 5 away from the mounting plate 302 , and the gripping rod 6 is provided to facilitate the screw rod 5 to be screwed, thereby facilitating the locking of the bidirectional screw rod 301 .

[0034] Furthermore, a rocker 7 is rotatably provided at the side edge of the wheel disc 4 away from the bidirectional screw rod 301 , so as to facilitate the rotation of the wheel disc 4 , thereby driving the bidirectional screw rod 301 to rotate and controlling the movement of the clamping plate 306 .

[0035] Furthermore, a control component for controlling the hydraulic cylinder 201 is provided on the workbench 1 . The control component is a programmable logic controller. The control component is electrically connected to the hydraulic cylinder 201 and the pressure sensor 202 .

[0036] Furthermore, a two-hand start button 10 is provided on the side of the workbench 1. The two-hand start button 10 is electrically connected to the control component and is used to start the hydraulic cylinder 201 for detection, while also protecting the operator's hands.

[0037] Working principle: Place the control cabinet to be tested between the four clamping plates 306 on the workbench 1, hold the rocker 7 and shake it, the rocker 7 drives the wheel 4 to rotate, and then drives the bidirectional screw 301 to rotate, the bidirectional screw 301 drives its corresponding two nuts 303 to approach each other along the length direction of the slide 305, the clamping plates 306 move with the nuts 303, the two clamping plates 306 located in the same slide 305 clamp the two sides of the control cabinet, the four clamping plates 306 move together, and fix the control cabinet from four directions; during the movement of the clamping plates 306, the clamping plates 306 that touch the control cabinet first push the control cabinet to move , until the other clamping plate 306 opposite to it also touches the control cabinet, and the control cabinet is pushed to the center of the workbench 1; at this time, hold the handle 6 and rotate it, the screw 5 cooperates with the screw hole, so that the screw 5 abuts against the mounting plate 302, and the wheel 4 is difficult to rotate due to the friction between the screw 5 and the mounting plate 302, resulting in the two-way screw 301 being locked, and the corresponding clamping plate 306 is also fixed, thereby fixing the control cabinet; the hydraulic cylinder 201 is started, driving the pressure block 203 to move vertically downward, and the pressure block 203 is aligned with the center of the top surface of the control cabinet, pressed down, and exerted pressure on it, and the structural strength test of the control cabinet is carried out.

[0038] It should be noted that although the present invention is disclosed as above with specific embodiments, the above embodiments are not intended to limit the present invention. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A control cabinet test device, characterized in that: include: Workbench; The hydraulic mechanism comprises a hydraulic cylinder vertically installed just above the workbench, a pressure sensor is provided on the piston rod of the hydraulic cylinder, and a pressure block is provided at the bottom end of the pressure sensor; The clamping mechanism includes two bidirectional screw rods arranged in the horizontal direction and perpendicular to each other, both ends of the bidirectional screw rods are rotatably connected to mounting plates, the mounting plates are fixed to the bottom surface of the workbench, the bidirectional screw rods include two sections of threads with opposite rotation directions, each section of the threads is provided with a nut, each nut is connected to a slider, a through slide groove is provided on the top surface of the workbench, the slider is inserted into the slide groove and slidably connected to the slide groove, a clamping plate for clamping the control cabinet is provided on the slider, and the pressure block is located directly above the center of the area enclosed by the four clamping plates.

2. A control cabinet test device as claimed in claim 1, characterized in that: A wheel disc is fixed on one end surface of the bidirectional screw rod, a screw hole is provided through the side surface of the wheel disc, a screw rod is threadedly connected to the inner thread of the screw hole, and the screw rod is in contact with the mounting plate.

3. A control cabinet test device as claimed in claim 2, characterized in that: A gripping rod is provided at one end of the screw rod away from the mounting plate.

4. A control cabinet test device as claimed in claim 2, characterized in that: A rocker is rotatably provided on the side edge of the wheel away from the bidirectional screw rod.

5. A control cabinet test device as claimed in claim 1, characterized in that: A horizontal top plate is arranged directly above the workbench through two side plates, and the hydraulic cylinder is installed on the bottom surface of the top plate.

6. A control cabinet test device as claimed in claim 1, characterized in that: A control component for controlling the hydraulic cylinder is disposed on the workbench, and the control component is electrically connected to the hydraulic cylinder and the pressure sensor.

7. A control cabinet test device as claimed in claim 6, characterized in that: A two-hand start button is provided on the side of the workbench, and the two-hand start button is electrically connected to the control component.

8. A control cabinet test device as claimed in claim 1, characterized in that: Support legs are arranged at the four corners of the bottom surface of the workbench.

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