A microgrid dispatch and control terminal system

Abstract

This utility model discloses a microgrid dispatch and control terminal system, including a controller body. A line straightening mechanism is fixedly connected to the bottom of the front middle part of the controller body, and a joint reinforcement mechanism is fixedly connected to the top of the line straightening mechanism. The line straightening mechanism includes a connecting plate. By setting up the line straightening mechanism and the controller body, rapid line straightening and stable clamping are achieved. It also has intelligent monitoring and protection functions, which greatly improves the safety and operation and maintenance efficiency of the microgrid. During use, operation and maintenance personnel can complete the line connection and fixation with simple operation, which greatly saves working time and labor costs. At the same time, the addition of intelligent monitoring function enables operation and maintenance personnel to understand the line operation status in real time, and can promptly detect and deal with potential safety hazards, effectively avoiding safety accidents caused by line faults and ensuring the long-term stable operation of the microgrid.

Description

Technical Field

[0001] This utility model relates to the field of microgrid technology, specifically a microgrid dispatch and control terminal system. Background Technology

[0002] A microgrid is a small-scale power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, loads, monitoring and protection devices, etc. It can be connected to the main power grid or operated in isolation. Microgrids have advantages such as flexibility, reliability, economy and environmental protection. They can achieve effective management and optimized scheduling of distributed energy resources, improve energy utilization efficiency, and reduce dependence on traditional power grids. It is one of the important directions for the development of smart grids.

[0003] According to patent document CN212649108U, a new energy control device integrating energy storage and distribution is disclosed, comprising: a distribution network system, a microgrid system, a power supply management system, an energy storage system, and a power consumption system. All three systems are connected to the power supply management system. This invention collects power supply information from the microgrid and distribution network systems, as well as energy consumption information from the power consumption system. Based on the energy consumption needs of the power consumption system, it intelligently analyzes the power supply demand, switches power supply between the microgrid and distribution network systems, and provides auxiliary power supply through the energy storage system. This achieves a reasonable allocation of power supply from the microgrid, distribution network, and energy storage systems to the power consumption system, reducing the impact of power supply fluctuations from the distribution network and microgrid systems on the power consumption system, improving the scheduling level of power supply control and management, and realizing integrated control of multiple energy forms and the power distribution system.

[0004] Microgrid dispatching typically involves connecting multiple connectors to a controller to achieve centralized management and control of multiple microgrids. However, the wiring of most controllers is usually quite complex, and in actual operation, due to the distributed nature of microgrids, the wiring is usually quite long. This increases the difficulty of management and maintenance, and when a line ages or fails due to long-term use, the time cost of locating and repairing the problem is high. Utility Model Content

[0005] The purpose of this utility model is to provide a microgrid dispatch and control terminal system to solve the problems mentioned in the background art, such as the fact that most controllers have relatively complex lines, and that in actual operation, due to the distributed nature of microgrids, the lines are usually quite long, which increases the difficulty of management and maintenance, and that when a line ages or fails due to long-term use, the time cost of locating and repairing the problem is high.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a microgrid dispatch and control terminal system, comprising the following steps:

[0007] Step 1: The data acquisition module collects key information in real time from various distributed power sources, energy storage devices, loads, and grid status in the microgrid to ensure the accuracy and timeliness of the data;

[0008] Step 2: The data processing module preprocesses the collected data, including data cleaning, format conversion, and outlier detection, to provide a reliable data foundation for subsequent analysis and control.

[0009] Step 3: The intelligent analysis module uses advanced algorithms to perform real-time analysis based on the processed data, identify the operating status of the microgrid, predict future trends, and automatically adjust the scheduling strategy to optimize energy distribution and improve the stability and efficiency of the microgrid.

[0010] Step 4: Based on the output of the intelligent analysis module, the control execution module executes corresponding scheduling instructions, including adjusting the output of distributed power sources, the charging and discharging strategies of energy storage devices, and the allocation of loads, to ensure that the microgrid can operate stably under various operating conditions, while meeting the energy needs of users and maximizing energy utilization and minimizing costs.

[0011] In addition, this application also relates to a microgrid dispatch control terminal controller, including a controller body, a line straightening mechanism fixedly connected to the bottom of the front middle part of the controller body, and a joint reinforcement mechanism fixedly connected to the top of the line straightening mechanism.

[0012] Preferably, the line straightening mechanism includes a connecting plate, with L-shaped connecting plates fixedly connected to the left and right sides of the connecting plate, the rear sides of the two L-shaped connecting plates fixedly connected to the front sides of the controller body, inverted L-shaped connecting rods fixedly connected to the top left and right sides of the connecting plate, slide rail rods fixedly connected to the front left and right sides of the connecting plate, and columnar slide rail rod side plates fixedly connected to the left and right sides of the inner wall of the two slide rail rods on the front side of the connecting plate, with columnar slide rail rods fixedly connected to the top and bottom of the inner sides of the two columnar slide rail rod side plates.

[0013] Preferably, a hydraulic push rod connecting block is fixedly connected to the middle of the top front side of the connecting plate, a hydraulic push rod is fixedly connected to the inner wall of the hydraulic push rod connecting block, multiple sides of the outer walls of the two columnar slide rails are slidably connected to expansion plates, a line clamping plate is fixedly connected to the front side of the multiple expansion plates, multiple clamping grooves are opened on the top inner side of the multiple line clamping plates, and a stop block is fixedly connected to the bottom front side of the multiple line clamping plates.

[0014] Preferably, a slider is slidably connected to the front side of the outer wall of each of the two slide rail rods, a lifting plate is fixedly connected to the front side of the two sliders, a lifting plate push block is fixedly connected to the bottom of the middle rear side of the lifting plate, the top of the lifting plate push block is fixedly connected to the bottom end of the hydraulic push rod, and multiple inclined slide grooves are provided on the left and right sides of the front side of the lifting plate, with the inclination of the two sets of inclined slide grooves being opposite.

[0015] Preferably, the joint reinforcement mechanism includes two columnar push-pull rod sliding blocks. The bottoms of the two columnar push-pull rod sliding blocks are respectively fixedly connected to the opposite sides of the tops of two inverted L-shaped connecting rods. Columnar push-pull rods are slidably connected to the inner walls of both columnar push-pull rod sliding blocks. A convex pressure plate is fixedly connected to the rear side of the two columnar push-pull rods. An inverted U-shaped connecting block is fixedly connected to the top center of the convex pressure plate. Multiple plug slots extending to the rear side are provided on the front side of the convex pressure plate. A T-shaped locking block groove is provided on the front side of the inverted U-shaped connecting block. A T-shaped locking block is slidably connected to the inner wall of the T-shaped locking block. The left and right sides of the front side of the T-shaped locking block... Two springs are fixedly connected to each other. The rear ends of the two springs are fixedly connected to the left and right sides of the front side of the inverted U-shaped connecting block. A limit rod is fixedly connected to the rear side of the T-shaped block. Multiple plug grooves are opened on the side of the limit rod that is aligned with multiple plug slots. An inverted U-shaped connecting rod is fixedly connected to the front end of the two columnar push-pull rods. A lead screw is threaded to the inner wall of the top middle part of the inverted U-shaped connecting rod. The rear end of the lead screw is rotatably connected to the top of the front middle part of the controller body. Limit plate sliding rods are fixedly connected to the left and right sides of the front side of the convex pressure plate. The left and right sides of the limit rod are slidably connected to the inner sides of the two limit plate sliding rods.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. By incorporating a line straightening mechanism and a controller body, the system achieves rapid line straightening and stable clamping, and also features intelligent monitoring and protection functions, greatly improving the safety and operation and maintenance efficiency of the microgrid. During use, maintenance personnel can easily connect and fix the lines with simple operations, significantly saving working time and labor costs. At the same time, the addition of intelligent monitoring functions allows maintenance personnel to understand the operating status of the lines in real time, promptly detect and handle potential safety hazards, effectively avoid safety accidents caused by line faults, and ensure the long-term stable operation of the microgrid.

[0018] 2. By incorporating a joint reinforcement mechanism and a controller body, the system effectively fixes and pressurizes the line joints, improving their stability and greatly simplifying the installation and maintenance process. Furthermore, the tight and flexible connections between the components ensure the reliability and durability of the entire system. In practical applications, this design will help improve the working efficiency of the microgrid dispatch and control terminal, reduce the failure rate caused by loose joints, and provide strong support for the safe and stable operation of the microgrid. Attached Figure Description

[0019] Figure 1 This is a step diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the main three-dimensional structure of the present utility model;

[0021] Figure 3 This is a schematic diagram of the three-dimensional separation structure of the main body of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the circuit straightening mechanism of this utility model.

[0023] Figure 5 This is a three-dimensional structural diagram of the joint reinforcement mechanism of this utility model.

[0024] In the diagram: 1. Controller body; 2. Line straightening mechanism; 21. Connecting plate; 22. Inverted L-shaped connecting rod; 23. L-shaped connecting plate; 24. Slide rail rod; 25. Columnar slide rail rod side plate; 26. Columnar slide rail rod; 27. Hydraulic push rod connecting block; 28. Hydraulic push rod; 29. ​​Expanding plate; 210. Line clamping plate; 211. Abutment block; 212. Clamping groove; 213. Slider; 214. Lifting plate; 215. 1. Lifting plate push block; 2. 16. Inclined slide groove; 3. Joint reinforcement mechanism; 31. Columnar push-pull rod slide block; 32. Columnar push-pull rod; 33. Convex pressure plate; 34. Plug slot; 35. Inverted U-shaped connecting block; 36. T-shaped locking block groove; 37. Pressure limiting plate slide rod; 38. Limiting pressure rod; 39. Plug pressure groove; 310. T-shaped locking block; 311. Spring; 312. Inverted U-shaped connecting rod; 313. Screw rod. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1This utility model provides a technical solution: a microgrid dispatch and control terminal system, comprising the following steps:

[0027] Step 1: The data acquisition module collects key information in real time from various distributed power sources, energy storage devices, loads, and grid status in the microgrid to ensure the accuracy and timeliness of the data;

[0028] Step 2: The data processing module preprocesses the collected data, including data cleaning, format conversion, and outlier detection, to provide a reliable data foundation for subsequent analysis and control.

[0029] Step 3: The intelligent analysis module uses advanced algorithms to perform real-time analysis based on the processed data, identify the operating status of the microgrid, predict future trends, and automatically adjust the scheduling strategy to optimize energy distribution and improve the stability and efficiency of the microgrid.

[0030] Step 4: Based on the output of the intelligent analysis module, the control execution module executes corresponding scheduling instructions, including adjusting the output of distributed power sources, the charging and discharging strategies of energy storage devices, and the allocation of loads, to ensure that the microgrid can operate stably under various operating conditions, while meeting the energy needs of users and maximizing energy utilization and minimizing costs.

[0031] Please see Figure 2-4Furthermore, this application also relates to a microgrid dispatch control terminal controller, including a controller body 1. A line straightening mechanism 2 is fixedly connected to the bottom of the front middle of the controller body 1. A joint reinforcement mechanism 3 is fixedly connected to the top of the line straightening mechanism 2. The line straightening mechanism 2 includes a connecting plate 21. L-shaped connecting plates 23 are fixedly connected to the left and right sides of the connecting plate 21, respectively. The rear sides of the two L-shaped connecting plates 23 are fixedly connected to the front sides of the controller body 1. Inverted L-shaped connecting rods 22 are fixedly connected to the top left and right sides of the connecting plate 21, respectively. Slide rail rods 24 are fixedly connected to the left and right sides of the front side of the connecting plate 21, respectively. Columnar slide rail rod side plates 25 are fixedly connected to the left and right sides of the inner wall of the two slide rail rods 24 on the front side of the connecting plate 21, respectively. Columnar slide rail rods 26 are fixedly connected to the top and bottom of the inner sides of the two columnar slide rail rod side plates 25, respectively. A hydraulic push rod connecting block 27 is fixedly connected to the middle of the top side. A hydraulic push rod 28 is fixedly connected to the inner wall of the hydraulic push rod connecting block 27. Multiple expansion plates 29 are slidably connected to the outer walls of the two columnar slide rail rods 26. Line clamping plates 210 are fixedly connected to the front side of the multiple expansion plates 29. Multiple clamping grooves 212 are opened on the top inner side of the multiple line clamping plates 210. A stop block 211 is fixedly connected to the bottom front side of the multiple line clamping plates 210. Slider 213 is slidably connected to the front side of the outer wall of the two slide rail rods 24. Lifting plate 214 is fixedly connected to the front side of the two sliders 213. Lifting plate push block 215 is fixedly connected to the bottom of the middle rear side of the lifting plate 214. The top of the lifting plate push block 215 is fixedly connected to the bottom end of the hydraulic push rod 28. Multiple inclined slide grooves 216 are opened on the left and right sides of the front side of the lifting plate 214. The inclination of the two sets of inclined slide grooves 216 is opposite.

[0032] After the line connector is inserted into the connector slot of the controller body 1, when it is necessary to straighten the line connected to the connector, the hydraulic push rod 28 is activated. The hydraulic push rod 28 pushes the lifting plate 214 up and down along the slide rail 24 through the lifting plate push block 215. During the up and down sliding process, the lifting plate 214, through the cooperation of the inclined slide groove 216 and the expansion plate 29, drives the expansion plate 29 to slide outward along the columnar slide rail 26, thereby driving the line clamp 210 to move outward and placing the line between multiple line clamps 210. Then, the hydraulic push rod 28 is activated in reverse. The hydraulic push rod 28 drives the lifting plate 214 to reset through the lifting plate push block 215. During the reset process, the lifting plate 214, through the cooperation of the inclined slide groove 216 and the expansion plate 29, drives the expansion plate 29 to slide inward along the columnar slide rail 26, thereby driving the line clamp 210 to move inward and placing the line between multiple line clamps 210. The clamping groove 212 on the inner side of 210 clamps and fixes the line, while the abutment block 211 presses the line firmly, improving the stability of the line fixation. In addition, the inner wall of each clamping groove 212 is equipped with a heat-sensing element. When the line temperature is too high, the heat-sensing element can quickly sense it and transmit the signal to the controller body 1. The controller body 1 determines whether protective measures need to be taken based on the received signal and through an internal preset algorithm. If the determination result is that protective measures are needed, the controller body 1 will immediately cut off the power supply related to the line or adjust the current distribution to prevent safety hazards such as fire or equipment damage caused by line overheating. In addition, the system also has an intelligent monitoring function, which can monitor the current, voltage and other parameters of the line in real time and transmit the data to a remote monitoring center, so that maintenance personnel can keep abreast of the line's operating status, discover and deal with potential problems in a timely manner, and ensure the safe and stable operation of the microgrid.

[0033] Please see Figure 5The joint reinforcement mechanism 3 includes two columnar push-pull rod sliding blocks 31. The bottoms of the two columnar push-pull rod sliding blocks 31 are respectively fixedly connected to the tops of two inverted L-shaped connecting rods 22 on opposite sides. Columnar push-pull rods 32 are slidably connected to the inner walls of both columnar push-pull rod sliding blocks 31. A convex pressure plate 33 is fixedly connected to the rear side of the two columnar push-pull rods 32. An inverted U-shaped connecting block 35 is fixedly connected to the top center of the convex pressure plate 33. Multiple plug slots 34 extending to the rear side are opened on the front side of the convex pressure plate 33. A T-shaped locking block groove 36 is opened on the front side of the inverted U-shaped connecting block 35. A T-shaped locking block 310 is slidably connected to the inner wall of the T-shaped locking block groove 36. The left and right sides of the front side of the T-shaped locking block 310 are respectively fixedly connected to... There are springs 311, and the rear ends of the two springs 311 are respectively fixedly connected to the left and right sides of the front side of the inverted U-shaped connecting block 35. The rear side of the T-shaped card block 310 is fixedly connected to the limiting pressure rod 38. The side of the limiting pressure rod 38 that is aligned with the multiple plug slots 34 is respectively provided with multiple plug pressure grooves 39. The front ends of the two columnar push-pull rods 32 are fixedly connected to the inverted U-shaped connecting rod 312. The inner wall of the top middle of the inverted U-shaped connecting rod 312 is threaded with a screw rod 313. The rear end of the screw rod 313 is rotatably connected to the top of the front middle of the controller body 1. The left and right sides of the front side of the convex pressure plate 33 are respectively fixedly connected to the pressure plate slide rod 37. The left and right sides of the limiting pressure rod 38 are respectively slidably connected to the inner side of the two pressure plate slide rods 37.

[0034] The wiring connector is connected to the inner wall of the controller body 1 through multiple plug slots 34 opened in the convex pressure plate 33. When it is necessary to prevent the connector from loosening, the T-shaped locking block 310 is pulled. The T-shaped locking block 310 pulls to release the limiting pressure rod 38 from the plug slot 34. Then, the limiting pressure rod 38 moves downward through the inner side of the sliding rod 37 of the two limiting pressure plates and locks on the top of the multiple connectors. After that, the lead screw 313 is rotated. The lead screw 313 drives the inverted U-shaped connecting rod 312 to move backward. The inverted U-shaped connecting rod 312 drives the two columnar push-pull rods 32 to move backward at the same time. The columnar push-pull rods 32 drive the convex pressure plate 33 to move backward. The convex pressure plate 33 pressurizes the wiring connector, so that the wiring connector is tightly fitted to the inner wall of the controller body 1, thereby effectively preventing the wiring connector from loosening.

[0035] Working principle: When using this device, after connecting the line connector to the connector slot of the controller body 1, if it is necessary to straighten the line connected to the connector, the hydraulic push rod 28 is activated. The hydraulic push rod 28 pushes the lifting plate 214 up and down along the slide rail 24 through the lifting plate push block 215. During the up and down sliding process, the lifting plate 214, through the cooperation of the inclined slide groove 216 and the expansion plate 29, drives the expansion plate 29 to slide outward along the columnar slide rail 26, thereby driving the line clamp 210 to move outward and placing the line between multiple line clamps 210. Then, the hydraulic push rod 28 is activated in reverse. The hydraulic push rod 28 drives the lifting plate 214 to reset through the lifting plate push block 215. During the reset process, the lifting plate 214, through the cooperation of the inclined slide groove 216 and the expansion plate 29, drives the expansion plate 29 to slide inward along the columnar slide rail 26, thereby driving the line clamp 210 to move inward. The line is clamped and fixed by the clamping groove 212 on the inner side of the line clamping plate 210, and the abutment block 211 presses the line firmly, which improves the stability of the line fixation. Each clamping groove 212 is equipped with a heat sensing element on its inner wall. When the line temperature is too high, the heat sensing element can quickly sense it and transmit the signal to the controller body 1. The controller body 1 determines whether to take protective measures based on the received signal and through the internal preset algorithm. If the determination result is that protective measures are needed, the controller body 1 will immediately cut off the power supply related to the line or adjust the current distribution to prevent safety hazards such as fire or equipment damage caused by line overheating. In addition, the system also has an intelligent monitoring function, which can monitor the current, voltage and other parameters of the line in real time and transmit the data to the remote monitoring center, so that the operation and maintenance personnel can keep abreast of the line's operating status, discover and deal with potential problems in a timely manner, and ensure the safe and stable operation of the microgrid.

[0036] The wiring connector is connected to the inner wall of the controller body 1 through multiple plug slots 34 opened in the convex pressure plate 33. When it is necessary to prevent the connector from loosening, the T-shaped locking block 310 is pulled. The T-shaped locking block 310 pulls to release the limiting pressure rod 38 from the limiting slot 34. Then, the limiting pressure rod 38 moves downward through the inner side of the sliding rod 37 of the two limiting pressure plates and locks on the top of the multiple connectors. After that, the lead screw 313 is rotated. The lead screw 313 drives the inverted U-shaped connecting rod 312 to move backward. The inverted U-shaped connecting rod 312 drives the two columnar push-pull rods 32 to move backward at the same time. The columnar push-pull rods 32 drive the convex pressure plate 33 to move backward. The convex pressure plate 33 pressurizes the wiring connector, so that the wiring connector is tightly fitted to the inner wall of the controller body 1.

[0037] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A microgrid dispatch and control terminal system, characterized in that: The controller body (1) is fixedly connected to the bottom of the front middle part of the controller body (1) and a joint reinforcement mechanism (3) is fixedly connected to the top of the line straightening mechanism (2).

2. The microgrid dispatch and control terminal system according to claim 1, characterized in that: The line straightening mechanism (2) includes a connecting plate (21). L-shaped connecting plates (23) are fixedly connected to the left and right sides of the connecting plate (21). The rear sides of the two L-shaped connecting plates (23) are fixedly connected to the front sides of the controller body (1). Inverted L-shaped connecting rods (22) are fixedly connected to the top left and right sides of the connecting plate (21). Slide rail rods (24) are fixedly connected to the left and right sides of the front side of the connecting plate (21). Columnar slide rail rod side plates (25) are fixedly connected to the left and right sides of the inner wall of the two slide rail rods (24) on the front side of the connecting plate (21). Columnar slide rail rods (26) are fixedly connected to the top and bottom of the inner sides of the two columnar slide rail rod side plates (25).

3. The microgrid dispatch and control terminal system according to claim 2, characterized in that: A hydraulic push rod connecting block (27) is fixedly connected to the middle of the top front side of the connecting plate (21). A hydraulic push rod (28) is fixedly connected to the inner wall of the hydraulic push rod connecting block (27). Multiple sides of the outer walls of the two columnar slide rail rods (26) are slidably connected to expansion plates (29). Line clamps (210) are fixedly connected to the front side of multiple expansion plates (29). Multiple clamping grooves (212) are opened on the top inner side of multiple line clamps (210). A stop block (211) is fixedly connected to the bottom front side of multiple line clamps (210).

4. A microgrid dispatch and control terminal system according to claim 2, characterized in that: The two slide rail rods (24) are slidably connected to the front side of the outer wall of each slide rail rod (24). The two slide rail rods (213) are fixedly connected to the front side of the two slide rail rods (213). The bottom of the middle rear side of the lifting plate (214) is fixedly connected to the lifting plate push block (215). The top of the lifting plate push block (215) is fixedly connected to the bottom end of the hydraulic push rod (28). Multiple inclined slide grooves (216) are opened on the left and right sides of the front side of the lifting plate (214). The inclination of the two sets of inclined slide grooves (216) is opposite.

5. A microgrid dispatch and control terminal system according to claim 1, characterized in that: The joint reinforcement mechanism (3) includes two columnar push-pull rod sliding blocks (31). The bottoms of the two columnar push-pull rod sliding blocks (31) are respectively fixedly connected to the opposite sides of the tops of two inverted L-shaped connecting rods (22). Columnar push-pull rods (32) are slidably connected to the inner walls of the two columnar push-pull rod sliding blocks (31). A convex pressure plate (33) is fixedly connected to the rear side of the two columnar push-pull rods (32). An inverted U-shaped connecting block (35) is fixedly connected to the top center of the convex pressure plate (33). Multiple plug slots (34) extending to the rear side are provided on the front side of the convex pressure plate (33). A T-shaped locking block groove (36) is provided on the front side of the inverted U-shaped connecting block (35). A T-shaped locking block (310) is slidably connected to the inner wall of the T-shaped locking block groove (36). The left and right sides of the front side of the T-shaped locking block (310) are respectively fixedly connected to... The springs (311) are fixedly connected to the left and right sides of the front of the inverted U-shaped connecting block (35) respectively. The T-shaped card block (310) is fixedly connected to the rear side of the limiting pressure rod (38). The limiting pressure rod (38) is provided with multiple plug slots (39) on the side that is aligned with multiple plug slots (34). The front ends of the two columnar push-pull rods (32) are fixedly connected to the inverted U-shaped connecting rod (312). The inner wall of the top middle of the inverted U-shaped connecting rod (312) is threaded with a screw rod (313). The rear end of the screw rod (313) is rotatably connected to the top of the front middle of the controller body (1). The left and right sides of the front of the convex pressure plate (33) are fixedly connected to the pressure plate slide rod (37). The left and right sides of the limiting pressure rod (38) are slidably connected to the inner side of the two pressure plate slide rods (37).

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