A mining explosion-proof refrigeration device assembly

Abstract

This invention discloses an assembly for an explosion-proof refrigeration device used in mining, comprising a base and a housing. The base houses an explosion-proof condenser and an explosion-proof evaporator, which are arranged side-by-side and interconnected. An explosion-proof compressor is also mounted on the base and is connected to the explosion-proof condenser. An explosion-proof expansion valve is also mounted on the base and is connected to the explosion-proof condenser. The explosion-proof evaporator is connected to the explosion-proof compressor. Two fans are spaced apart on the base and are respectively connected to the explosion-proof condenser and the explosion-proof evaporator. The explosion-proof condenser and the explosion-proof evaporator are detachably connected to the base via two mounting mechanisms. The housing is fitted onto the base and is detachably connected to it. This invention, through its detachable connection structure, allows critical components such as the explosion-proof condenser and the explosion-proof evaporator to be separated from the base during transportation, preventing damage from shaking caused by the mining environment.

Description

Technical Field

[0001] This invention relates to the field of refrigeration equipment technology, and in particular to an assembly of an explosion-proof refrigeration device for mining. Background Technology

[0002] In mines, as the mining depth increases, the ground temperature also rises, leading to higher temperatures in the mines. When the temperature in the mines reaches a certain level, the physical and mental health of workers in high-temperature and heat-hazardous mining will be greatly affected, thus requiring the use of refrigeration equipment.

[0003] Before use, mining refrigeration equipment needs to be moved to a designated location. During this movement, the unique environment of the mine causes the equipment to shake continuously. Due to the complex terrain of the mine, severe vibrations are unavoidable during transportation. Existing mining refrigeration equipment generally lacks effective shock-absorbing components. This continuous vibration can easily damage critical components such as explosion-proof condensers and evaporators. More seriously, existing mining refrigeration equipment typically uses bolts to directly fix components to the base plate. While this method is simple, it has significant drawbacks in practical applications: Firstly, bolt fixing prevents the quick disassembly of important components, necessitating the entire device to be moved during transportation, increasing transportation difficulty and the risk of damage. Secondly, when maintenance or replacement of specific components is required, the disassembly process is cumbersome and time-consuming, severely impacting work efficiency. Summary of the Invention

[0004] (a) Purpose of the invention

[0005] To address the technical problems existing in the background art, this invention proposes a general assembly for an explosion-proof refrigeration device used in mining. This technical solution utilizes a detachable connection structure, allowing critical components such as the explosion-proof condenser and evaporator to be separated from the base during transportation, preventing damage from shaking caused by the mining environment. The detachable connection between the outer shell and the base further facilitates the inspection and maintenance of internal components. This design solves the problem of existing mining refrigeration devices being easily damaged during transportation due to their fixed connections, while maintaining the structural stability of the device during use.

[0006] (II) Technical Solution

[0007] This invention provides an assembly for an explosion-proof refrigeration device used in mining, comprising a base and a housing. The base is equipped with an explosion-proof condenser and an explosion-proof evaporator, which are arranged side-by-side and interconnected. An explosion-proof compressor is mounted on the base and is interconnected with the explosion-proof condenser. An explosion-proof expansion valve is also mounted on the base and is interconnected with the explosion-proof condenser. The explosion-proof evaporator is connected to the explosion-proof compressor. Two fans are spaced apart on the base and are respectively connected to the explosion-proof condenser and the explosion-proof evaporator. The explosion-proof condenser and the explosion-proof evaporator are detachably connected to the base via two mounting mechanisms. The housing is fitted onto the base and is detachably connected to it.

[0008] Preferably, the base is horizontally provided with a first partition plate, and two second partition plates are spaced apart on the base and are both perpendicular to the first partition plate. The two second partition plates, the first partition plate and the base form two mounting cavities, and the two mounting mechanisms are respectively located in the two mounting cavities.

[0009] Preferably, the installation mechanism includes a support plate, which is slidably disposed in the installation cavity and fits against its cavity wall. The support plate is provided with a first groove, and a positioning component for positioning the explosion-proof condenser is provided in the first groove. A driving component for driving the support plate to move in the vertical direction is provided on the bottom wall of the installation cavity. A fixing component for fixing the explosion-proof condenser is provided in the installation cavity.

[0010] Preferably, the driving assembly includes a first mounting frame, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, and a second mounting frame. The first mounting frame is connected to the bottom wall of the mounting cavity, and the second mounting frame is located above the first mounting frame and connected to the support plate. The inner wall of the first mounting frame has a first through-hole, and the inner wall of the second mounting frame has a second through-hole. One end of the first connecting rod is rotatably slidably disposed in the first through-hole, and one end of the second connecting rod is rotatably connected to the inner wall of the first mounting frame. The first and second connecting rods are arranged crosswise, and the intersection of the first and second connecting rods is rotatably connected by a first rotating shaft. The other end of the second connecting rod is rotatably connected to one end of the third connecting rod, and the other end of the third connecting rod is rotatably connected to the inner wall of the second mounting frame. The other end of the first connecting rod is rotatably connected to one end of the fourth connecting rod, and the other end of the fourth connecting rod is rotatably slidably disposed in the second through-hole. The third and fourth connecting rods are arranged crosswise, and their intersection is rotatably connected by a second rotating shaft. The mounting cavity is provided with a driving unit for driving the first connecting rod to move.

[0011] Preferably, the driving unit includes a push plate, which is slidably disposed within the first mounting frame and slidably connected to the inner wall of the first mounting frame. The push plate is movable to abut against the first connecting rod and push it to slide within the first strip-shaped through hole.

[0012] Preferably, it further includes a motor and a first screw. The second spacer plate is provided with a second groove, the motor is fixedly disposed in the second groove, the push plate is provided with a first threaded through hole, one end of the first screw is coaxially connected to the output shaft of the motor, the other end of the first screw passes through the first threaded through hole and is rotatably connected to the inner wall of the mounting cavity, and the first screw is threadedly connected to the push plate.

[0013] Preferably, the positioning component includes positioning blocks and springs. The two positioning blocks are slidably disposed in the first groove. The ends of the two positioning blocks that are far apart from each other are connected to the inner wall of the first groove through the springs. There is a gap between the two positioning blocks for the installation of the explosion-proof condenser.

[0014] Preferably, the fixing component includes a transmission plate, two transmission plates are slidably disposed on the bottom wall of the mounting cavity, a first notch on the support plate for the transmission plate to pass through, the transmission plate is slidably disposed in the first notch and slidably disposed in contact with the inner wall of the first notch, the transmission plate can be moved to abut against the positioning block to drive the positioning block to abut against the explosion-proof condenser, and a power unit for driving the transmission plate to move is provided in the mounting cavity.

[0015] Preferably, the power unit includes a bidirectional screw, which is horizontally disposed in the mounting cavity, with its two ends rotatably connected to the inner wall of the mounting cavity. The bidirectional screw is provided with a first gear and a second gear, which mesh with each other for transmission. The transmission plate is provided with a second threaded through hole, and the two ends of the bidirectional screw pass through the two second threaded through holes and are threadedly connected to the two transmission plates respectively.

[0016] Preferably, the transmission plate is provided with two mounting plates at a distance from one end facing the positioning block, and a plurality of rotatably arranged sliding rollers are provided vertically between the two mounting plates. The sliding rollers can be moved to abut against and slide against the positioning block.

[0017] Compared with the prior art, the above-mentioned technical solution of the present invention has the following beneficial technical effects:

[0018] In this invention, the technical solution utilizes a detachable connection structure, allowing critical components such as the explosion-proof condenser and evaporator to be separated from the base during transportation, preventing damage from shaking caused by the mining environment. The detachable connection between the outer shell and the base further facilitates the inspection and maintenance of internal components. This design solves the problem of existing mining refrigeration devices being easily damaged during transportation due to their fixed connections, while maintaining the structural stability of the device during use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall assembly of a mine explosion-proof refrigeration device proposed in this invention.

[0020] Figure 2 This is a schematic diagram of the internal structure of a mining explosion-proof refrigeration device assembly proposed in this invention.

[0021] Figure 3 This is a schematic diagram of the base structure in the assembly of a mine explosion-proof refrigeration device proposed in this invention.

[0022] Figure 4 This is a schematic diagram of the internal structure of the mounting cavity in the assembly of a mine explosion-proof refrigeration device proposed in this invention.

[0023] Figure 5 This is a partially enlarged structural diagram of point A in the assembly of a mine explosion-proof refrigeration device proposed in this invention.

[0024] Reference numerals: 1. Base; 2. Housing; 3. Explosion-proof compressor; 4. Explosion-proof condenser; 5. Explosion-proof evaporator; 6. Fan; 7. First partition plate; 8. Second partition plate; 9. Support plate; 10. First mounting frame; 11. First connecting rod; 12. Second connecting rod; 13. Third connecting rod; 14. Fourth connecting rod; 15. Second mounting frame; 16. Push plate; 17. Motor; 18. First screw; 20. Bidirectional screw; 21. Transmission plate; 22. Mounting plate; 23. Sliding roller; 24. Positioning block; 25. Spring. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0026] like Figure 1-5As shown, the present invention proposes a mine explosion-proof refrigeration device assembly, comprising a base 1 and a housing 2. The base 1 is equipped with an explosion-proof condenser 4 and an explosion-proof evaporator 5, which are arranged side-by-side with spacing and interconnected. An explosion-proof compressor 3 is also mounted on the base 1 and is interconnected with the explosion-proof condenser 4. An explosion-proof expansion valve is also mounted on the base 1 and is interconnected with the explosion-proof condenser 4. The explosion-proof evaporator 5 is connected to the explosion-proof compressor 3. Two fans 6 are spaced apart on the base 1, and the two fans 6 are respectively connected to the explosion-proof condenser 4 and the explosion-proof evaporator 5. Evaporator 5 is connected. Explosion-proof condenser 4 and explosion-proof evaporator 5 are detachably connected to base 1 via two mounting mechanisms. Outer shell 2 is fitted onto base 1 and detachably connected to base 1. Outer shell 2 and base 1 are installed using bolts and nuts. Base 1 has a connecting square plate for installation, with a first opening on the connecting square plate and a second opening on outer shell 2. The first and second openings overlap. Bolts are inserted into the first and second openings, and the nuts are rotated to abut against outer shell 2. The bolts abut against the connecting square plate.

[0027] The explosion-proof condenser 4, explosion-proof evaporator 5, explosion-proof compressor 3, and explosion-proof expansion valve are all existing technologies, and therefore will not be described in detail in this application.

[0028] This technical solution utilizes a detachable connection structure, allowing critical components such as the explosion-proof condenser 4 and explosion-proof evaporator 5 to be separated from the base 1 during transportation, preventing damage from shaking caused by the mine environment. The detachable connection between the outer casing 2 and the base 1 further facilitates the inspection and maintenance of internal components. This design solves the problem of existing mine refrigeration devices being easily damaged during transportation due to their fixed connections, while maintaining the structural stability of the device during use.

[0029] Furthermore, this application also proposes that the base 1 is horizontally provided with a first partition plate 7, and two second partition plates 8 are spaced apart on the base 1 and are both perpendicular to the first partition plate 7. The two second partition plates 8, the first partition plate 7 and the base 1 form two mounting cavities, and the two mounting mechanisms are located in the two mounting cavities respectively.

[0030] The mounting cavity is formed by the second partition plate 8, the first partition plate 7, and the base 1. By setting the first partition plate 7 and the second partition plate 8 perpendicular to each other, independent mounting cavities are formed, allowing the explosion-proof condenser 4 and the explosion-proof evaporator 5 to be installed in separate cavities. The mounting cavity structure provides a stable mounting base for the drive assembly and the positioning assembly, ensuring that the support plate 9 can move accurately in the vertical direction.

[0031] Furthermore, this application also proposes that the installation mechanism includes a support plate 9, which is slidably disposed in the installation cavity and fits against its cavity wall. The support plate 9 is provided with a first groove, and a positioning component for positioning the explosion-proof condenser 4 is provided in the first groove. A driving component for driving the support plate 9 to move in the up and down direction is provided on the bottom wall of the installation cavity. A fixing component for fixing the explosion-proof condenser 4 is provided in the installation cavity.

[0032] Specifically, the support plate 9 is adjustablely connected to the mounting cavity via a sliding mechanism. This technical solution utilizes the liftable support plate 9 in conjunction with positioning and fixing components to achieve rapid positioning and reliable fixation of the explosion-proof condenser 4. When disassembly is required, the drive component raises the support plate 9, causing the explosion-proof condenser 4 to rise vertically and break free from the fixed constraints. Furthermore, the vertical rise of the explosion-proof condenser 4 provides more space for disassembly, facilitating a more direct, vertical disassembly process and effectively preventing the condenser 4 from tilting during disassembly and colliding with other components at its bottom. Compared to traditional bolt fixing methods, this structure avoids thread damage caused by repeated bolt disassembly and assembly. Moreover, multi-directional synchronous constraints are achieved through mechanical linkage, ensuring both ease of disassembly during transportation and structural stability during operation, especially under conditions of frequent movement of mining equipment.

[0033] Furthermore, this application also proposes that the drive assembly includes a first mounting frame 10, a first connecting rod 11, a second connecting rod 12, a third connecting rod 13, a fourth connecting rod 14, and a second mounting frame 15. The first mounting frame 10 is connected to the bottom wall of the mounting cavity, and the second mounting frame 15 is located above the first mounting frame 10 and connected to the support plate 9. The inner wall of the first mounting frame 10 has a first through-hole, and the inner wall of the second mounting frame 15 has a second through-hole. One end of the first connecting rod 11 is rotatably slidably disposed in the first through-hole, and one end of the second connecting rod 12 is rotatably connected to the inner wall of the first mounting frame 10. The first link 11 and the second link 12 are arranged crosswise, and the intersection of the first link 11 and the second link 12 is rotatably connected by the first rotating shaft. The other end of the second link 12 is rotatably connected to one end of the third link 13, and the other end of the third link 13 is rotatably connected to the inner wall of the second mounting frame 15. The other end of the first link 11 is rotatably connected to one end of the fourth link 14, and the other end of the fourth link 14 is rotatably slidably disposed in the second strip-shaped through hole. The third link 13 and the fourth link 14 are arranged crosswise, and their intersection is rotatably connected by the second rotating shaft. A drive unit for driving the first link 11 to move is provided in the mounting cavity.

[0034] Therefore, this technical solution converts the linear motion of the drive unit into the lifting motion of the support plate 9 through the transmission action of a multi-link mechanism. When the drive unit pushes the first link 11, it drives the second link 12 to rotate through the first rotating shaft, which in turn drives the second mounting frame 15 to move through the third link 13. At the same time, the fourth link 14 slides in the second through hole, cooperating with the third link 13 to form a stable parallelogram mechanism, ensuring that the support plate 9 remains horizontally raised and lowered. Compared with the traditional screw lifting mechanism, this design has better resistance to lateral forces and can effectively avoid the mechanism jamming caused by vibration during the transportation of mining refrigeration equipment. Furthermore, due to the use of multi-link transmission, the lifting process of the support plate 9 is more stable, which is beneficial to protecting precision components such as the explosion-proof condenser 4 installed on the support plate 9.

[0035] Furthermore, this application also proposes that the drive unit includes a push plate 16, which is slidably disposed within the first mounting frame 10 and slidably connected to the inner wall of the first mounting frame 10. The push plate 16 can be moved to abut against the first connecting rod 11 and push it to slide within the first strip-shaped through hole.

[0036] This technical solution achieves precise linear drive of the first connecting rod 11 by setting a sliding push plate 16 structure. When the push plate 16 slides along the inner wall of the first mounting frame 10, its front end forms rigid contact with the first connecting rod 11, directly transmitting the driving force to the linkage mechanism. Since the push plate 16 and the mounting frame adopt a surface contact sliding fit, the vibration generated during the transportation of mining equipment will not cause the drive unit to fail. The sliding stroke of the push plate 16 can be adjusted according to actual needs, thereby precisely controlling the lifting height of the explosion-proof condenser 4.

[0037] Furthermore, this application also proposes that the motor 17 is fixedly installed in the second groove on the second partition plate 8, the push plate 16 is provided with a first threaded through hole, one end of the first screw 18 is coaxially connected to the output shaft of the motor 17, the other end of the first screw 18 passes through the first threaded through hole and is rotatably connected to the inner wall of the mounting cavity, and the first screw 18 is threadedly connected to the push plate 16.

[0038] Therefore, this technical solution uses a motor 17 to drive a screw mechanism, which in turn moves the push plate 16 linearly, thereby controlling the sliding position of the first connecting rod 11 within the first through hole. This structure has the advantages of convenient operation and precise positioning, and can effectively solve the problem of component installation position displacement caused by vibration during the movement of mining refrigeration equipment.

[0039] Furthermore, this application also proposes that the positioning assembly includes positioning blocks 24 and springs 25, with two positioning blocks 24 slidably disposed in the first groove, and the ends of the two positioning blocks 24 that are far apart from each other being connected to the inner wall of the first groove through the springs 25, and a gap between the two positioning blocks 24 for the installation of the explosion-proof condenser 4.

[0040] Specifically, the positioning block 24 is made of wear-resistant metal material, and its contact surface with the explosion-proof condenser 4 is provided with anti-slip texture to increase friction.

[0041] Therefore, this technical solution achieves rapid positioning of the explosion-proof condenser 4 through an elastic clamping structure. That is, when installing the explosion-proof condenser 4, it can be directly placed in the first groove, and positioned and initially limited by two positioning blocks 24, thereby ensuring the stability of subsequent installation.

[0042] Furthermore, this application also proposes that the fixing component includes a transmission plate 21, both of which are slidably disposed on the bottom wall of the mounting cavity. The support plate 9 has a first notch through which the transmission plate 21 passes. The transmission plate 21 is slidably disposed in the first notch and is slidably disposed in contact with the inner wall of the first notch. The transmission plate 21 can be moved to abut against the positioning block 24 to drive the positioning block 24 to abut against the explosion-proof condenser 4. The mounting cavity is provided with a power unit for driving the transmission plate 21 to move.

[0043] This technical solution achieves rapid fixing and releasing of the explosion-proof condenser 4 through a bidirectional sliding transmission plate 21. When the power unit drives the transmission plate 21 to move towards the positioning block 24, the transmission plate 21 pushes the positioning block 24 to compress the spring 25, causing the two positioning blocks 24 to clamp the explosion-proof condenser 4; when moving in the opposite direction, the spring 25 resets, causing the positioning block 24 to release.

[0044] Furthermore, this application also proposes that the power unit includes a bidirectional screw 20, which is horizontally disposed in the mounting cavity, with its two ends respectively rotatably connected to the inner wall of the mounting cavity. The bidirectional screw 20 is provided with a first gear, and the first screw 18 is provided with a second gear. The first gear and the second gear mesh with each other for transmission. The transmission plate 21 is provided with a second threaded through hole, and the two ends of the bidirectional screw 20 respectively pass through the two second threaded through holes and are respectively threadedly connected to the two transmission plates 21.

[0045] Specifically, this technical solution transmits the rotational motion of the first screw 18 to the bidirectional screw 20 through gear meshing, and then the threaded transmission of the bidirectional screw 20 is converted into the linear motion of the transmission plate 21. Compared with the existing technology that uses a single screw to drive a single transmission plate 21, this structure has better synchronization and stability.

[0046] Furthermore, this application also proposes that the transmission plate 21 is provided with two mounting plates 22 at a distance from one end facing the positioning block 24, and a plurality of rotatably mounted sliding rollers 23 are provided vertically between the two mounting plates 22, and the sliding rollers 23 can be moved to abut against and slide against the positioning block 24.

[0047] Specifically, the sliding roller 23 is mounted between the two mounting plates 22 via bearings, allowing it to rotate freely. Therefore, this technical solution, by setting the rotatable sliding roller 23 to form rolling contact with the positioning block 24, effectively avoids the upward movement of the positioning block 24 and the support plate 9 being affected by an excessively small movement path of the transmission block when the support plate 9 needs to be moved upwards and the fixing of the explosion-proof condenser 4 is required. This further improves the stability of the device during use.

[0048] In this invention, during installation, the device is first lowered onto the support plate 9, and the support plate 9 is moved downward by the drive assembly. When the support plate 9 moves downward, the transmission block enters the first notch and moves within the first notch. After the explosion-proof condenser 4 moves downward to the correct installation position, the positioning block 24 completes the final positioning of the explosion-proof condenser 4 through the transmission block. This device can effectively complete the installation of the explosion-proof condenser 4.

[0049] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A mine explosion-proof refrigeration device assembly, characterized in that, The application relates to an explosion-proof air conditioner, which comprises a base and a shell, wherein an explosion-proof condenser and an explosion-proof evaporator are arranged on the base and are in communication with each other, an explosion-proof compressor is arranged on the base and is in communication with the explosion-proof condenser, an explosion-proof expansion valve is arranged on the base and is in communication with the explosion-proof condenser, the explosion-proof evaporator is in communication with the explosion-proof compressor, two fans are arranged on the base and are in communication with the explosion-proof condenser and the explosion-proof evaporator respectively, the explosion-proof condenser and the explosion-proof evaporator are detachably connected with the base through two mounting mechanisms, the shell is sleeved on the base and is detachably connected with the base, a first spacing plate is horizontally arranged on the base, two second spacing plates are arranged on the base and are perpendicular to the first spacing plate, the two second spacing plates, the first spacing plate and the base form two mounting cavities, the two mounting mechanisms are arranged in the two mounting cavities respectively, the mounting mechanism comprises a supporting plate which is slidably arranged in the mounting cavity and is attached to the cavity wall, a first recess is arranged on the supporting plate, a positioning assembly for positioning the explosion-proof condenser is arranged in the first recess, a driving assembly for driving the supporting plate to move in the up-down direction is arranged on the bottom wall of the mounting cavity, a fixing assembly for fixing the explosion-proof condenser is arranged in the mounting cavity, the driving assembly comprises a first mounting frame, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod and a second mounting frame, the first mounting frame is connected with the bottom wall of the mounting cavity, the second mounting frame is arranged above the first mounting frame and is connected with the supporting plate, a first strip-shaped through hole is arranged in the inner wall of the first mounting frame and penetrates through the first mounting frame, a second strip-shaped through hole is arranged in the inner wall of the second mounting frame and penetrates through the second mounting frame, one end of the first connecting rod is rotatably and slidably arranged in the first strip-shaped through hole, one end of the second connecting rod is rotatably connected with the inner wall of the first mounting frame, the first connecting rod and the second connecting rod are arranged in cross, the first connecting rod and the second connecting rod are rotatably connected through a first rotating shaft at the cross, the other end of the second connecting rod is rotatably connected with one end of the third connecting rod, the other end of the third connecting rod is rotatably connected with the inner wall of the second mounting frame, the other end of the first connecting rod is rotatably connected with one end of the fourth connecting rod, the other end of the fourth connecting rod is rotatably and slidably arranged in the second strip-shaped through hole, the third connecting rod and the fourth connecting rod are arranged in cross, and the third connecting rod and the fourth connecting rod are rotatably connected through a second rotating shaft at the cross.The installation cavity is provided with a driving unit for driving the first connecting rod to move. The driving unit comprises a push plate, which is slidingly arranged in the first mounting frame and is in sliding connection with the inner wall of the first mounting frame. The push plate is movable to abut against the first connecting rod and push the first connecting rod to slide in the first slot-shaped hole. The driving unit further comprises a motor and a first screw rod. The second spacer plate is provided with a second groove, and the motor is fixedly arranged in the second groove. The push plate is provided with a first threaded hole. One end of the first screw rod is coaxially connected with the output shaft of the motor, and the other end of the first screw rod passes through the first threaded hole and is in rotational connection with the inner wall of the installation cavity. The first screw rod is in threaded connection with the push plate. The positioning assembly comprises positioning blocks and springs. The two positioning blocks are slidingly arranged in the first groove. The ends of the two positioning blocks away from each other are connected with the inner wall of the first groove through the springs. The two positioning blocks have a gap for installing the explosion-proof condenser. The fixing assembly comprises transmission plates. The two transmission plates are slidingly arranged on the bottom wall of the installation cavity. The support plate is provided with a first gap for the transmission plates to pass through. The transmission plates are slidingly arranged in the first gap and are in close sliding connection with the inner wall of the first gap. The transmission plates are movable to abut against the positioning blocks to drive the positioning blocks to abut against the explosion-proof condenser. The installation cavity is provided with a power unit for driving the transmission plates to move. The power unit comprises a bidirectional screw rod, which is horizontally arranged in the installation cavity and is in rotational connection with the inner wall of the installation cavity at both ends. The bidirectional screw rod is provided with a first gear. The first screw rod is provided with a second gear. The first gear and the second gear are in meshing transmission with each other. The transmission plates are provided with second threaded holes. The two ends of the bidirectional screw rod pass through the two second threaded holes respectively and are in threaded connection with the two transmission plates respectively. The end of the transmission plate away from the positioning blocks is provided with two mounting plates. A plurality of sliding rollers are rotationally arranged between the two mounting plates. The sliding rollers are movable to abut against the positioning blocks and are in close sliding connection with the positioning blocks.

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