Explosion-proof performance detection device for distribution box

Abstract

The utility model relates to the technical field of distribution box detection, and discloses a distribution box explosion-proof performance detection device which comprises a detection box, an air cylinder is installed on the inner wall of the detection box, the telescopic end of the air cylinder is fixedly connected with a fixing seat, a clamping assembly is arranged on the fixing seat, a supporting table is installed in the detection box, and a clamping assembly is arranged on the supporting table. An extrusion assembly is arranged on the upper side of the supporting table, and a protective shell is mounted on the upper side of the detection box; the clamping assembly comprises a clamping plate, the clamping plate is arranged on the right side of the fixing base, a dovetail block is installed on the clamping plate, a dovetail groove is formed in the fixing base, and the dovetail block is slidably connected into the dovetail groove. According to the utility model, in the face of distribution boxes with different specifications, the installation bolt is rotated to release the fixation of the limiting plate, the clamping plate is slid, the dovetail block is matched with the dovetail groove to disassemble the old clamping plate, and after the matched new clamping plate is installed, the limiting plate is installed again to limit the dovetail block.

Description

Technical Field

[0001] This utility model relates to the field of electrical distribution box testing technology, and in particular to a device for testing the explosion-proof performance of electrical distribution boxes. Background Technology

[0002] An explosion-proof distribution box is a device used for power distribution and control in flammable and explosive environments. It has explosion-proof, fireproof, and corrosion-resistant properties, and can effectively prevent electrical equipment from causing fires or explosions. Explosion-proof distribution boxes usually adopt special materials and structural designs to ensure their safe operation in hazardous environments. They are widely used in industries such as petroleum, chemical, pharmaceutical, and shipbuilding, and are one of the important pieces of equipment to ensure production safety.

[0003] Ensuring the reliable explosion-proof performance of distribution boxes throughout the entire production process and their long-term use is crucial. Only when the explosion-proof performance meets the standards can the production safety of related industries be truly guaranteed. In daily life, testing devices can be used to inspect them to avoid major safety accidents caused by distribution boxes.

[0004] However, most existing testing devices use fixed-size clamping structures, which can only be used to fix distribution boxes of specific specifications. When encountering distribution boxes of different sizes and shapes, a lot of time is required for manual adjustment. Furthermore, the extrusion heads are often fixed and cannot be flexibly replaced according to the testing requirements of different distribution boxes. Moreover, it is difficult to accurately extrude and test specific parts of the distribution box.

[0005] Therefore, an explosion-proof performance testing device for distribution boxes is provided to solve the problems mentioned in the background art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a device for testing the explosion-proof performance of distribution boxes. It aims to improve the existing technology that uses a fixed-size clamping structure, which can only be used to fix distribution boxes of specific specifications. When encountering distribution boxes of different sizes and shapes, a lot of time is required for manual adjustment. In addition, the extrusion head is often fixed and it is difficult to flexibly change it according to the testing requirements of different distribution boxes. Furthermore, it is difficult to accurately extrude and test specific parts of the distribution box.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a distribution box explosion-proof performance testing device, comprising a testing box, a cylinder installed on the inner wall of the testing box, a fixed base fixedly connected to the telescopic end of the cylinder, a clamping assembly provided on the fixed base, a support platform installed inside the testing box, a pressing assembly provided on the upper side of the support platform, and a protective shell installed on the upper side of the testing box; the clamping assembly includes a clamping plate, the clamping plate is located on the right side of the fixed base, a dovetail block is installed on the clamping plate, a dovetail groove is opened inside the fixed base, the dovetail block is slidably connected inside the dovetail groove, a limit plate is provided on the upper side of the fixed base, an installation bolt is installed inside the limit plate, and an installation hole is opened inside the testing box.

[0008] Furthermore, the extrusion assembly includes an electric push rod, which is mounted on the detection box. The telescopic end of the electric push rod is fixedly connected to a mounting base. A rotating assembly is provided inside the mounting base, and a turntable is provided on the lower side of the mounting base. The mounting assembly is provided on the turntable.

[0009] Furthermore, the rotating assembly includes a motor, which is installed inside the mounting base. The output end of the motor is fixedly connected to a rotating shaft, and the side of the rotating shaft away from the motor is fixedly connected to the upper side of the turntable.

[0010] Furthermore, the mounting assembly includes a connecting seat disposed on the lower side of the turntable, a spring fixedly mounted on the connecting seat, the end of the spring away from the connecting seat being fixedly connected to the lower side of the turntable, an mounting rod being threadedly connected to the internal thread of the connecting seat, a pressing head being mounted on the lower side of the mounting rod, a pressure sensor being mounted on the connecting seat, and an adjusting nut being threadedly connected to the external thread of the mounting rod.

[0011] Furthermore, the mounting bolt is threaded into the inside of the mounting hole, and the limiting plate is located on the upper side of the dovetail block.

[0012] Furthermore, the protective housing is disposed on the outside of the electric push rod.

[0013] Furthermore, the extrusion heads are provided in four groups, and the extrusion heads are evenly distributed in a ring on the lower side of the turntable.

[0014] Furthermore, the adjusting nut is located on the lower side of the connecting seat.

[0015] This utility model has the following beneficial effects:

[0016] In this utility model, when testing the distribution box, the box door is opened and the box is placed on the internal support platform. The cylinder is started, and the cylinder drives the fixed seat to push the clamping plate to fix the distribution box. For distribution boxes of different specifications, the mounting bolts are rotated to release the fixation of the limit plate. The clamping plate is slid, and the old clamping plate is removed by using the dovetail block and dovetail groove. After replacing it with a new clamping plate that is suitable, the limit plate and limit dovetail block are reinstalled.

[0017] In this invention, when performing extrusion testing, the motor inside the mounting base is started. The motor drives the turntable to rotate through the rotating shaft, so that the four extrusion heads on the lower side of the turntable are aligned with the four corners on the upper side of the distribution box. Then, the electric push rod is started to apply pressure to the extrusion heads. During extrusion, the spring buffers to prevent excessive pressure from damaging the equipment. The pressure sensor measures the pressure in real time and outputs data. When the extrusion head needs to be replaced, the adjusting nut is rotated to move it down, and then the mounting rod is rotated to disengage from the connecting seat to remove the old head. After replacing the new head, the adjusting nut is operated in reverse to limit the position. Attached Figure Description

[0018] Figure 1 This is a perspective view of a power distribution box explosion-proof performance testing device proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of a power distribution box explosion-proof performance testing device proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the clamping component structure of a power distribution box explosion-proof performance testing device proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the mounting base of the explosion-proof performance testing device for a distribution box proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the extrusion head installation structure of a power distribution box explosion-proof performance testing device proposed in this utility model;

[0023] Figure 6 This is a partial structural schematic diagram of a power distribution box explosion-proof performance testing device proposed in this utility model.

[0024] Legend:

[0025] 1. Testing box; 2. Cylinder; 3. Clamping assembly; 31. Clamping plate; 32. Dovetail block; 33. Dovetail groove; 34. Limiting plate; 35. Mounting hole; 36. Mounting bolt; 4. Support platform; 5. Fixing seat; 6. Protective housing; 7. Extrusion assembly; 71. Electric push rod; 72. Mounting seat; 73. Spring; 74. Connecting seat; 75. Mounting rod; 76. Extrusion head; 77. Pressure sensor; 78. Motor; 79. Turntable; 710. Adjusting nut; 711. Rotating shaft. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figure 1 , Figure 2 and Figure 6 This utility model provides an embodiment of an explosion-proof performance testing device for a distribution box, comprising a testing box 1, a cylinder 2 installed on the inner wall of the testing box 1, a fixed seat 5 fixedly connected to the telescopic end of the cylinder 2, a clamping assembly 3 provided on the fixed seat 5, a support platform 4 installed inside the testing box 1, a pressing assembly 7 provided on the upper side of the support platform 4, a protective shell 6 installed on the upper side of the testing box 1, the protective shell 6 being located outside the electric push rod 71; the clamping assembly 3 includes a clamping plate 31, the clamping plate 31 being located on the right side of the fixed seat 5, a dovetail block 32 installed on the clamping plate 31, a dovetail groove 33 being opened inside the fixed seat 5, the dovetail block 32 being slidably connected inside the dovetail groove 33, a limiting plate 34 being provided on the upper side of the fixed seat 5, an installation bolt 36 being installed inside the limiting plate 34, an installation hole 35 being opened inside the testing box 1, the installation bolt 36 being threadedly connected inside the installation hole 35, and the limiting plate 34 being located on the upper side of the dovetail block 32;

[0028] By opening the door of the testing box 1, the distribution box to be tested is placed on the internal support platform 4. After it is placed stably, the cylinder 2 is started. The cylinder 2 drives the fixed seat 5 to move, and the fixed seat 5 pushes the clamping plate 31 towards the distribution box to clamp and fix the distribution box. When it is necessary to clamp distribution boxes of different specifications, first rotate the mounting bolt 36 so that the mounting bolt 36 gradually disengages from the mounting hole 35 of the fixed seat 5, thereby releasing the fixation of the limiting plate 34. After the limit is released, slide the clamping plate 31. During the sliding process, the dovetail block 32 on the clamping plate 31 slides inside the dovetail groove 33 of the fixed seat 5 until the old clamping plate 31 is removed. Select a new clamping plate 31 that conforms to the specifications of the distribution box, slide the dovetail block 32 into the dovetail groove 33, and after the installation is completed, install the limiting plate 34 in the mounting hole 35 again with the mounting bolt 36 to limit the dovetail block 32 and prevent it from sliding out in subsequent operations.

[0029] Reference Figure 3 , Figure 4 and Figure 5The extrusion assembly 7 includes an electric push rod 71, which is mounted on the detection box 1. A mounting base 72 is fixedly connected to the telescopic end of the electric push rod 71. A rotating assembly is located inside the mounting base 72. A turntable 79 is located on the lower side of the mounting base 72, and a mounting assembly is mounted on the turntable 79. The rotating assembly includes a motor 78, which is mounted inside the mounting base 72. A rotating shaft 711 is fixedly connected to the output end of the motor 78. The side of the rotating shaft 711 away from the motor 78 is fixedly connected to the upper side of the turntable 79. The mounting assembly includes a connecting seat 74. A connector 74 is located on the lower side of the turntable 79. A spring 73 is fixedly installed on the connector 74. The end of the spring 73 away from the connector 74 is fixedly connected to the lower side of the turntable 79. An installation rod 75 is connected to the internal thread of the connector 74. An extrusion head 76 is installed on the lower side of the installation rod 75. Four sets of extrusion heads 76 are arranged in a ring and evenly distributed on the lower side of the turntable 79. A pressure sensor 77 is installed on the connector 74. An adjusting nut 710 is connected to the outer thread of the installation rod 75. The adjusting nut 710 is located on the lower side of the connector 74.

[0030] When a compression test is required on the distribution box, the motor 78 inside the mounting base 72 is started. After the motor 78 starts, it drives the turntable 79 to rotate via the rotating shaft 711. During the rotation, the operator can observe the position of the turntable 79, ensuring that the four compression heads 76 on the lower side of the turntable 79 are accurately aligned with the four upper corners of the distribution box. After alignment, the electric push rod 71 is activated, causing the turntable 79 to move downwards, applying compression force between the compression heads 76 and the distribution box. During the compression process, the spring 73 between the compression head 76 and the connecting base 74 is compressed, preventing excessive instantaneous compression force from damaging the distribution box and the test equipment. The device is damaged. At the same time, the pressure sensor 77 on the connecting seat 74 senses the magnitude of the extrusion force in real time and outputs the data for recording and analysis. When the extrusion head 76 needs to be replaced, first turn the adjusting nut 710 to gradually move it down outside the mounting rod 75. After the adjusting nut 710 moves down a certain distance, turn the mounting rod 75 to gradually disengage it from the inside of the connecting seat 74. At this time, the old extrusion head 76 can be removed. Then, turn the mounting rod 75 on the new extrusion head 76 into the inside of the connecting seat 74, and then turn the adjusting nut 710 to limit the mounting rod 75.

[0031] Working principle: When using this device, open the door of the detection box 1 and place the distribution box on the internal support platform 4. Start the cylinder 2, which drives the fixing seat 5 and clamping plate 31 to clamp and fix the distribution box. When different sizes of distribution boxes need to be clamped, rotate the mounting bolt 36 to disengage it from the mounting hole 35 of the fixing seat 5, releasing the fixation of the limiting plate 34. Then slide the clamping plate 31, while the dovetail block 32 slides inside the dovetail groove 33, removing the old clamping plate 31. Then, slide the dovetail block 32 of the new clamping plate 31 (fitting the distribution box) into the dovetail groove 33. Finally, install the limiting plate 34 in the mounting hole 35 using the mounting bolt 36. The dovetail block 32 is limited to prevent it from slipping out. When the distribution box needs to be squeezed for testing, the motor 78 inside the mounting base 72 is started. The motor 78 drives the turntable 79 to rotate through the rotating shaft 711, so that the four squeezing heads 76 on the lower side of the turntable 79 are aligned with the four upper corners of the distribution box. Then the electric push rod 71 is started to drive the turntable 79 to move down. During squeezing, the spring 73 is squeezed and buffered, and the data is measured by the pressure sensor 77 on the connecting base 74. When the squeezing head 76 needs to be replaced, the adjusting nut 710 is turned to move it down outside the mounting rod 75. Then the mounting rod 75 is turned to disengage it from the inside of the connecting base 74, and the squeezing head 76 can be replaced.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for testing the explosion-proof performance of a distribution box, comprising a testing box (1), characterized in that: A cylinder (2) is installed on the inner wall of the test box (1). A fixed seat (5) is fixedly connected to the telescopic end of the cylinder (2). A clamping component (3) is provided on the fixed seat (5). A support platform (4) is installed inside the test box (1). A squeezing component (7) is provided on the upper side of the support platform (4). A protective shell (6) is installed on the upper side of the test box (1). The clamping assembly (3) includes a clamping plate (31), which is located on the right side of the fixed base (5). A dovetail block (32) is installed on the clamping plate (31). A dovetail groove (33) is provided inside the fixed base (5). The dovetail block (32) is slidably connected inside the dovetail groove (33). A limit plate (34) is provided on the upper side of the fixed base (5). An installation bolt (36) is installed inside the limit plate (34). An installation hole (35) is provided inside the detection box (1).

2. The explosion-proof performance testing device for a distribution box according to claim 1, characterized in that: The extrusion assembly (7) includes an electric push rod (71), which is mounted on the detection box (1). The telescopic end of the electric push rod (71) is fixedly connected to a mounting base (72). A rotating assembly is provided inside the mounting base (72). A turntable (79) is provided on the lower side of the mounting base (72). An installation assembly is provided on the turntable (79).

3. The explosion-proof performance testing device for a distribution box according to claim 2, characterized in that: The rotating assembly includes a motor (78) which is installed inside the mounting base (72). The output end of the motor (78) is fixedly connected to a rotating shaft (711), and the side of the rotating shaft (711) away from the motor (78) is fixedly connected to the upper side of the turntable (79).

4. The explosion-proof performance testing device for a distribution box according to claim 2, characterized in that: The mounting assembly includes a connector (74) disposed on the lower side of the turntable (79), a spring (73) fixedly mounted on the connector (74), the end of the spring (73) away from the connector (74) being fixedly connected to the lower side of the turntable (79), an mounting rod (75) being threadedly connected to the inside of the connector (74), a pressing head (76) being mounted on the lower side of the mounting rod (75), a pressure sensor (77) being mounted on the connector (74), and an adjusting nut (710) being threadedly connected to the outside of the mounting rod (75).

5. The explosion-proof performance testing device for a distribution box according to claim 1, characterized in that: The mounting bolt (36) is threaded into the interior of the mounting hole (35), and the limiting plate (34) is located on the upper side of the dovetail block (32).

6. The explosion-proof performance testing device for a distribution box according to claim 1, characterized in that: The protective housing (6) is located on the outside of the electric push rod (71).

7. The explosion-proof performance testing device for a distribution box according to claim 4, characterized in that: The extrusion head (76) is provided in four groups, and the extrusion head (76) is evenly distributed in a ring on the lower side of the turntable (79).

8. The explosion-proof performance testing device for a distribution box according to claim 4, characterized in that: The adjusting nut (710) is located on the lower side of the connecting seat (74).

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