Safety production data parallel acquisition device
By introducing dehumidification and refrigeration mechanisms into the parallel collection device for safe production data, the problems of poor heat dissipation and moisture are solved, efficient heat dissipation and moisture-proof effects are achieved, and the stability of the device is ensured.
Patent Information
- Application Number
- CN202510960837.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-12
- Publication Date
- 2025-09-05
AI Technical Summary
The existing parallel collection device for production safety data has poor heat dissipation effect during the heat dissipation process and is easily damaged by moisture, and external moisture enters the interior of the device.
The blower fan is combined with a dehumidification component and a refrigeration mechanism. The air is absorbed by the dehumidification component before entering the device. The serpentine coil and the semiconductor refrigerator of the cooling box are used for cooling and cooling. The opening and closing of the air outlet mesh plate is automatically controlled by the closing component to prevent moisture from entering.
It effectively improves the heat dissipation effect inside the device, prevents components from being damaged by moisture, and ensures the long-term stable operation of the device.
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Figure CN120603210A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of data acquisition equipment, and in particular to a parallel acquisition device for production safety data. Background Art
[0002] The parallel production safety data acquisition device is a device or system used to efficiently and synchronously collect multi-source production safety-related data. Its core advantage lies in "parallel acquisition", which can process multiple data acquisition tasks at the same time, improving the real-time and comprehensiveness of data acquisition.
[0003] The existing parallel collection device for safe production data usually uses a fan to blow air into the interior of the parallel collection device for safe production data to dissipate heat. On the one hand, the heat dissipation effect is poor. On the other hand, when blowing air into the interior of the parallel collection device for safe production data, moisture in the external environment will also enter the interior of the parallel collection device for safe production data, which can easily cause the internal components of the parallel collection device to become damp and damaged. For this reason, we propose a parallel collection device for safe production data. Summary of the Invention
[0004] The present invention provides a parallel collection device for production safety data, which solves the technical problems raised in the above background technology.
[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A parallel data collection device for production safety includes a parallel data collection device body, wherein the four corners of the lower end surface of the parallel data collection device body are fixedly connected to support legs, the left side of the parallel data collection device body is provided with an air outlet, and the interior of the air outlet is fixedly connected to an air outlet mesh plate; A blower mechanism for blowing air and dissipating heat from the interior of the data parallel acquisition device body is provided at the right end of the data parallel acquisition device body. The blower mechanism includes a square tube at one end inserted into the data parallel acquisition device body and maintained in a sealed connection with the data parallel acquisition device body. A blower fan is provided inside the square tube, and a dehumidification component is provided at the air outlet end of the blower fan. A refrigeration mechanism is provided below the body of the parallel data acquisition device for cooling and cooling the air blown from the inside of the square tube to the inside of the parallel data acquisition device body.
[0006] A further improvement of the technical solution of the present invention is that: the air blowing mechanism further includes a dustproof screen plate arranged at the air inlet end of the air blowing fan, and the dustproof screen plate is fixedly connected to the inner wall of the square through pipe.
[0007] A further improvement of the technical solution of the present invention is that the dehumidification component includes a cleaning port opened on the upper end face of the square through pipe, a rubber plug plate is inserted into the inside of the cleaning port, a disassembly plate is fixedly connected to the upper end face of the rubber plug plate, and a pull handle is fixedly connected to the upper end face of the disassembly plate.
[0008] A further improvement of the technical solution of the present invention is that two symmetrical mounting rails are provided below the rubber plug plate, the two mounting rails are fixedly connected to the inner wall of the square through tube, and a moisture-absorbing plate is slidably connected between the two mounting rails.
[0009] A further improvement of the technical solution of the present invention is that the refrigeration mechanism includes a cooling box fixedly connected to the lower end surface of the data parallel acquisition device body, the bottom surface of the cooling box is provided with a groove, and a semiconductor cooler is installed inside the groove.
[0010] A further improvement of the technical solution of the present invention is that a water pump is fixedly connected to the left side of the cooling box, a liquid extraction end of the water pump is fixedly connected to a liquid extraction pipe, one end of the liquid extraction pipe is inserted into the cooling box and maintains a sealed connection with the cooling box.
[0011] A further improvement of the technical solution of the present invention is that: the infusion end of the water pump is fixedly connected to an infusion tube 1, one end of the infusion tube 1 is provided with a closing component, one side of the closing component is provided with an infusion tube 2, one end of the infusion tube 2 is fixedly connected to a serpentine coil arranged between the blowing fan and the dehumidification component, both ends of the serpentine coil pass through one side of the square through pipe and are fixedly connected to the passing part, one end of the serpentine coil is fixedly connected to a return pipe, one end of the return pipe is inserted into the cooling box and maintained in a sealed connection with the cooling box.
[0012] A further improvement of the technical solution of the present invention is that the closing component includes a square tube fixedly connected to the left side of the data parallel acquisition device body, and one end of the infusion tube 1 and the infusion tube 2 are both inserted into the square tube and maintain a sealed connection with the square tube.
[0013] A further improvement of the technical solution of the present invention is that: the inner wall of the square tube is slidably connected to a sealing slider, the upper end face of the sealing slider is fixedly connected to a square push rod that passes through the top of the square tube and is slidably connected to the passing part, the upper end face of the square push rod is fixedly connected to a closing plate that is slidably connected to the surface of the air outlet mesh plate, and a spring is provided above the sealing slider and is sleeved on the surface of the square push rod.
[0014] A further improvement of the technical solution of the present invention is that: two fixed blocks are provided on both sides of the closing plate, both of which are fixedly connected to the left side of the data parallel acquisition device body; a limit block is provided between the two fixed blocks, which is slidably connected to the left side of the data parallel acquisition device body; one end of the limit block is fixedly connected to the closing plate; and a limit rod is fixedly connected between the two fixed blocks, which passes through the corresponding limit blocks and is slidably connected to the passing part.
[0015] The beneficial effects of the present invention are as follows: the present invention provides a parallel collection device for production safety data, which has the following advantages: 1. The present invention provides a parallel data acquisition device for safe production. A fan can blow air into the interior of the device. A dehumidification component can absorb moisture from the air before it enters the device, preventing moisture from entering the device along with the air and affecting the use of components within the device. 2. The present invention proposes a safe production data parallel acquisition device. When the fan delivers the dehumidified air into the data parallel acquisition device body, the coolant in the cooling box after being cooled by the semiconductor refrigerator can be circulated inside the serpentine coil under the action of the water pump, infusion tube 1, infusion tube 2, serpentine coil, return pipe and closing component, thereby cooling the air entering the data parallel acquisition device body and improving the heat dissipation effect of the data parallel acquisition device body. When the water pump is started, the closing component will automatically open the air outlet mesh plate, so that the air inside the data parallel acquisition device body forms an air delivery channel for heat dissipation. When the water pump stops, the closing mechanism will automatically close the air outlet mesh plate to prevent external moisture from directly entering the data parallel acquisition device body through the air outlet mesh plate when the entire device is not in use, thereby further preventing the components inside the data parallel acquisition device body from being damaged by moisture.
[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the following preferred embodiments of the present invention are described in detail with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail by the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 A schematic structural diagram of a parallel collection device for production safety data provided by one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the bottom structure of a parallel collection device for production safety data is provided; Figure 3 for Figure 1 A schematic diagram of the structure of a parallel collection device for production safety data from a left perspective is provided; Figure 4 for Figure 1 A schematic diagram of the structure of a parallel collection device for production safety data from a right side view is provided; Figure 5 for Figure 1 A schematic diagram of the structure of a data parallel acquisition device body in a safety production data parallel acquisition device provided by the invention is shown in a left side view; Figure 6 for Figure 1 A schematic diagram of the partial structure disassembly of a parallel collection device for production safety data is provided; Figure 7 for Figure 3 A schematic cross-sectional view of the structure of a closing component in a parallel collection device for production safety data is provided.
[0018] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Data parallel acquisition device body; 2. Support legs; 3. Blowing mechanism; 301. Square through-tube; 302. Blowing fan; 303. Dust-proof screen; 304. Cleaning port; 305. Dehumidification assembly; 3051. Disassembly plate; 3052. Rubber plug plate; 3053. Mounting slide rail; 3054. Desiccant plate; 4. Refrigeration mechanism; 401. Cooling box; 402. Semiconductor refrigerator; 403. Water pump; 404. Infusion tube 1; 405. Extraction tube; 406. Closing assembly; 4061. Fixing block; 4062. Limiting rod; 4063. Limiting block; 4064. Closing plate; 4065. Square tube; 4066. Square push rod; 4067. Spring; 4068. Sealing slider; 407. Infusion tube 2; 408. Serpentine coil; 409. Return pipe; 5. Air outlet screen. DETAILED DESCRIPTION
[0019] The following is combined with Figure 1-7 The principles and features of the present invention are described, and the examples given are only for the purpose of explaining the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are in a very simplified form and are not in exact proportions, and are only used for the purpose of conveniently and clearly assisting in illustrating the embodiments of the present invention.
[0020] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0022] Example 1 like Figure 1-7 As shown, the present invention provides a safe production data parallel acquisition device, including a data parallel acquisition device body 1, wherein the four corners of the lower end face of the data parallel acquisition device body 1 are fixedly connected to support legs 2, an air outlet is opened on the left side of the data parallel acquisition device body 1, and an air outlet mesh plate 5 is fixedly connected to the inside of the air outlet; a blower mechanism 3 for blowing air and dissipating heat from the interior of the data parallel acquisition device body 1 is provided at the right end of the data parallel acquisition device body 1, the blower mechanism 3 includes a square through-tube 301 at one end inserted into the data parallel acquisition device body 1 and maintained in a sealed connection with the data parallel acquisition device body 1, a blower fan 302 is provided inside the square through-tube 301, and a dehumidification component 305 is provided at the air outlet end of the blower fan 302; a refrigeration mechanism 4 for cooling and cooling the air blown from the inside of the square through-tube 301 to the inside of the data parallel acquisition device body 1 is provided below the data parallel acquisition device body 1, the blower mechanism 3 also includes a dustproof mesh plate 303 arranged at the air inlet end of the blower fan 302, and the dustproof mesh plate 303 is fixedly connected to the inner wall of the square through-tube 301.
[0023] In this embodiment, when the entire device is in use, the blower fan 302 is activated to blow air into the interior of the parallel data acquisition device body 1. The dehumidification component 305 dehumidifies the air entering the parallel data acquisition device body 1, preventing moisture from damaging the components within the parallel data acquisition device body 1. Simultaneously with the activation of the blower fan 302, the refrigeration mechanism 4 is activated to cool the air blown into the parallel data acquisition device body 1, effectively improving the heat dissipation effect within the parallel data acquisition device body 1.
[0024] Example 2 like Figure 1-7 As shown, based on Example 1, the present invention provides a technical solution. Preferably, the dehumidification component 305 includes a cleaning port 304 opened on the upper end face of the square through-tube 301, and a rubber plug plate 3052 is inserted into the interior of the cleaning port 304. The upper end face of the rubber plug plate 3052 is fixedly connected to a disassembly plate 3051, and the upper end face of the disassembly plate 3051 is fixedly connected to a pull handle. Two symmetrical mounting rails 3053 are arranged below the rubber plug plate 3052, and the two mounting rails 3053 are fixedly connected to the inner wall of the square through-tube 301. A desiccant plate 3054 is slidably connected between the two mounting rails 3053.
[0025] In this embodiment, the air entering the data parallel acquisition device body 1 can be dehumidified by the desiccant plate 3054 to prevent moisture from causing damage to the components inside the data parallel acquisition device body 1. The cleaning port 304 can be opened by the rubber plug plate 3052, and the desiccant plate 3054 can be removed from the inside of the square through tube 301 and replaced by installing the slide rail 3053.
[0026] Example 3 like Figure 1-7 As shown, on the basis of Example 1, the present invention provides a technical solution. Preferably, the refrigeration mechanism 4 includes a cooling box 401 fixedly connected to the lower end surface of the data parallel acquisition device body 1, the bottom surface of the cooling box 401 is provided with a groove, and a semiconductor refrigerator 402 is installed inside the groove. The left side of the cooling box 401 is fixedly connected to a water pump 403, and the liquid extraction end of the water pump 403 is fixedly connected to a liquid extraction pipe 405. One end of the liquid extraction pipe 405 is inserted into the cooling box 401 and maintains a sealed connection with the cooling box 401. The infusion end of the water pump 403 is fixedly connected to the cooling box 401. It is connected to an infusion tube 404, one end of which is provided with a closing component 406, one side of which is provided with an infusion tube 2 407, one end of which is fixedly connected to a serpentine coil 408 arranged between the blowing fan 302 and the dehumidification component 305, both ends of the serpentine coil 408 pass through one side of the square through pipe 301 and are fixedly connected to the passing portion, one end of the serpentine coil 408 is fixedly connected to a return pipe 409, one end of which is inserted into the cooling box 401 and maintained in a sealed connection with the cooling box 401.
[0027] In this embodiment, the coolant inside the refrigeration box is cooled by the semiconductor refrigerator 402. When the water pump 403 is activated, the cooled coolant is transferred to the interior of the serpentine coil 408 through the infusion tube 1 404, the infusion tube 2 407, and the closing assembly 406. The cooled coolant then flows back to the interior of the cooling box 401 through the return pipe 409. This allows the coolant to circulate within the serpentine coil 408, causing the air blown into the interior of the data parallel acquisition device body 1 to cool the air, thereby effectively improving the heat dissipation effect of the data parallel acquisition device body 1. When the water pump 403 is activated, the closing assembly 406 automatically opens the air outlet mesh plate 5 to allow air to flow out. When the water pump 403 stops, the closing assembly 406 automatically closes the air outlet mesh plate 5, preventing external moisture from entering the interior of the data parallel acquisition device body 1 through the air outlet mesh plate 5 when the entire device is not in use, further preventing the components inside the data parallel acquisition device body 1 from being damaged by moisture.
[0028] Example 4 like Figure 1-7 As shown, based on Example 1, the present invention provides a technical solution. Preferably, the closing component 406 includes a square tube 4065 fixedly connected to the left side of the data parallel acquisition device body 1, one end of the infusion tube 1 404 and the infusion tube 2 407 are inserted into the square tube 4065 and maintain a sealed connection with the square tube 4065, the inner wall of the square tube 4065 is slidably connected to a sealing slider 4068, the upper end face of the sealing slider 4068 is fixedly connected to the top of the square tube 4065 and slidably connected to the through-portion, the upper end face of the square push rod 4066 is fixedly connected to the air outlet mesh plate 5 A closing plate 4064 is connected in a sliding manner on the surface, and a spring 4067 is provided above the sealing slider 4068 and is sleeved on the surface of the square push rod 4066. Two fixed blocks 4061 are provided on both sides of the closing plate 4064, both of which are fixedly connected to the left side of the data parallel acquisition device body 1. A limit block 4063 is provided between the two fixed blocks 4061 and is connected in a sliding manner to the left side of the data parallel acquisition device body 1. One end of the limit block 4063 is fixedly connected to the closing plate 4064. A limit rod 4062 is fixedly connected between the two fixed blocks 4061, which passes through the corresponding limit blocks 4063 and is slidably connected to the passing part.
[0029] In this embodiment, when the water pump 403 is activated, the coolant in the cooling box 401 is fed into the square tube 4065 through the first infusion tube 404, pushing the sealing slider 4068 inside the square tube 4065 upward. The rise of the sealing slider 4068 causes the square push rod 4066 to rise, thereby raising the closing plate 4064, thereby opening the air outlet mesh panel 5 for use. The limit block 4063 and the limit rod 4062 enhance the stability of the closing plate 4064 during its sliding. When the sealing slider 4068 moves above one end of the second infusion tube 407, the coolant flows out of the square tube 4065 through the second infusion tube 407. At this time, the closing plate 4064 can remain raised, allowing the air outlet mesh panel 5 to be opened for use. When the subsequent water pump 403 stops, the sealing slider 4068 can be lowered inside the square tube 4065 under the action of the spring 4067, so that the square push rod 4066 drives the closing plate 4064 to descend, and the closing plate 4064 closes the air outlet mesh plate 5, thereby preventing external moisture from entering the interior of the data parallel acquisition device body 1 through the air outlet mesh plate 5 when the entire device is not in use, and further preventing the internal components of the data parallel acquisition device body 1 from being damaged by moisture.
[0030] The specific working principle and method of use of the present invention are as follows: The present invention provides a parallel data collection device for safe production, such as Figure 1-7 As shown, during use, when heat is needed within the data parallel acquisition device body 1, water pump 403 and blower fan 302 are activated. The activation of water pump 403 causes the coolant, cooled by semiconductor cooler 402 within cooling box 401, to be delivered to square tube 4065 via infusion tube 1 404. This in turn pushes sealing slider 4068 within square tube 4065 upward. The upward movement of sealing slider 4068 raises square push rod 4066, which in turn raises closing plate 4064, opening air outlet screen 5. When sealing slider 4068 moves above one end of infusion tube 2 407, the coolant flows out of square tube 4065 through infusion tube 2 407. Closing plate 4064 then remains raised, allowing air outlet screen 5 to be opened. Through infusion tube 2 407, the coolant is delivered to the interior of serpentine coil 408, where it circulates, thereby cooling the air entering data parallel acquisition device body 1. When the blower fan 302 is activated, air can be blown into the interior of the parallel data acquisition device body 1. The moisture in the air entering the parallel data acquisition device body 1 can be absorbed by the moisture absorbing plate 3054, thereby preventing moisture from entering the interior of the parallel data acquisition device body 1 along with the air and causing damage to the components inside the parallel data acquisition device body 1. When the entire device is not in use, the operation of the blowing fan 302 and the water pump 403 is stopped. At this time, the sealing slider 4068 will descend on the inner wall of the square tube 4065 under the action of the spring 4067, and the closing plate 4064 can be driven to descend under the action of the square push rod 4066, so that the closing plate 4064 closes the air outlet mesh plate 5, thereby preventing external moisture from entering the interior of the data parallel acquisition device body 1 through the air outlet mesh plate 5 when the entire device is not in use, and further preventing the internal components of the data parallel acquisition device body 1 from being damaged by moisture.
[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.
Claims
1. A parallel data acquisition device for safe production, comprising a parallel data acquisition device body (1), characterized in that: The four corners of the lower end surface of the data parallel acquisition device body (1) are fixedly connected to support legs (2), the left side of the data parallel acquisition device body (1) is provided with an air outlet, and the interior of the air outlet is fixedly connected to an air outlet mesh plate (5); The right end of the data parallel acquisition device body (1) is provided with a blower mechanism (3) for blowing air to dissipate heat inside the data parallel acquisition device body (1), the blower mechanism (3) comprising a square tube (301) one end of which is inserted into the data parallel acquisition device body (1) and is kept in sealed connection with the data parallel acquisition device body (1), a blower fan (302) is provided inside the square tube (301), and a dehumidification component (305) is provided at the air outlet end of the blower fan (302); A refrigeration mechanism (4) is provided below the data parallel acquisition device body (1) for cooling and cooling the air blown from the inside of the square through pipe (301) toward the inside of the data parallel acquisition device body (1).
2. A parallel collection device for production safety data according to claim 1, characterized in that: The air blowing mechanism (3) further comprises a dustproof screen plate (303) arranged at the air inlet end of the air blowing fan (302), and the dustproof screen plate (303) is fixedly connected to the inner wall of the square through pipe (301).
3. The parallel collection device for production safety data according to claim 1, characterized in that: The dehumidification component (305) includes a cleaning port (304) opened on the upper end surface of the square through pipe (301), a rubber plug plate (3052) is inserted into the interior of the cleaning port (304), a disassembly plate (3051) is fixedly connected to the upper end surface of the rubber plug plate (3052), and a pull handle is fixedly connected to the upper end surface of the disassembly plate (3051).
4. The parallel collection device for production safety data according to claim 3, characterized in that: Two mutually symmetrical mounting rails (3053) are provided below the rubber plug plate (3052), and the two mounting rails (3053) are fixedly connected to the inner wall of the square through pipe (301), and a moisture absorption plate (3054) is slidably connected between the two mounting rails (3053).
5. The parallel collection device for production safety data according to claim 1, characterized in that: The refrigeration mechanism (4) comprises a cooling box (401) fixedly connected to the lower end surface of the data parallel acquisition device body (1); a groove is provided on the bottom surface of the cooling box (401), and a semiconductor cooler (402) is installed inside the groove.
6. The parallel collection device for production safety data according to claim 5, characterized in that: A water pump (403) is fixedly connected to the left side of the cooling box (401), and a liquid extraction pipe (405) is fixedly connected to the liquid extraction end of the water pump (403). One end of the liquid extraction pipe (405) is inserted into the cooling box (401) and maintains a sealed connection with the cooling box (401).
7. The parallel collection device for production safety data according to claim 6, characterized in that: The infusion end of the water pump (403) is fixedly connected to an infusion tube 1 (404), one end of the infusion tube 1 (404) is provided with a closing component (406), one side of the closing component (406) is provided with an infusion tube 2 (407), one end of the infusion tube 2 (407) is fixedly connected to a serpentine coil (408) provided between the blowing fan (302) and the dehumidification component (305), both ends of the serpentine coil (408) pass through one side of the square through pipe (301) and are fixedly connected to the passing portion, one end of the serpentine coil (408) is fixedly connected to a return pipe (409), one end of the return pipe (409) is inserted into the cooling box (401) and maintains a sealed connection with the cooling box (401).
8. The parallel collection device for production safety data according to claim 7, characterized in that: The closing assembly (406) comprises a square tube (4065) fixedly connected to the left side of the data parallel acquisition device body (1), and one end of each of the first infusion tube (404) and the second infusion tube (407) is inserted into the square tube (4065) and maintains a sealed connection with the square tube (4065).
9. The parallel collection device for production safety data according to claim 8, characterized in that: The inner wall of the square tube (4065) is slidably connected to a sealing slider (4068), the upper end face of the sealing slider (4068) is fixedly connected to a square push rod (4066) that passes through the top of the square tube (4065) and is slidably connected to the passing portion, the upper end face of the square push rod (4066) is fixedly connected to a closing plate (4064) that is slidably connected to the surface of the air outlet mesh plate (5), and a spring (4067) is provided above the sealing slider (4068) and is sleeved on the surface of the square push rod (4066).
10. The parallel collection device for production safety data according to claim 9, characterized in that: Two fixed blocks (4061) are provided on both sides of the closing plate (4064), both of which are fixedly connected to the left side of the data parallel acquisition device body (1); a limit block (4063) is provided between the two fixed blocks (4061) and is slidably connected to the left side of the data parallel acquisition device body (1); one end of the limit block (4063) is fixedly connected to the closing plate (4064); and a limit rod (4062) is fixedly connected between the two fixed blocks (4061) and passes through the corresponding limit blocks (4063) and is slidably connected to the passing portion.