An electric power meter with a long-distance detection function
By designing power meters with active wiring safety, follow-up wire management and opening and closing protection mechanisms, the problems of loose wiring and chaotic wiring of existing power meters are solved, and more stable and reliable power transmission and more efficient wiring harness management are achieved, reducing maintenance costs and safety hazards.
Patent Information
- Application Number
- CN202410943737.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2044-07-15
AI Technical Summary
The existing power meters need manual wiring before use and lack of a protective mechanism, which causes the wiring parts to loosen or fall off, affecting the measurement accuracy and instrument functions, and increasing maintenance difficulty. In addition, uneven wiring harness lengths lead to confusion in wiring, increasing the difficulty of troubleshooting and repair.
A power meter with long-distance detection function is designed, adopting a rectangular frame structure, including an active wiring safety mechanism, a follow-up wire management mechanism and an opening and closing protection mechanism. The active wiring safety mechanism ensures the plug is firmly connected through arc-shaped fixing plates and levers; the follow-up wire management mechanism manages excessively long wire harnesses through the clamping posts and torsion springs, and is automatically wound into the clamping posts; the opening and closing protection mechanism protects the wiring harness from external damage through sliders and baffles.
The active wiring safety mechanism ensures that the plug is firmly connected, prevents loosening or falling off, and improves the stability and reliability of power transmission; the follow-up wire management mechanism manages the wiring harness, saves space, reduces cable damage, and extends the service life; the opening and closing protection mechanism protects the wiring harness, extends the service life, and reduces maintenance costs and safety hazards.
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Figure CN118962189B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of power meter detection, and specifically relates to a power meter with a long-distance detection function. Background Art
[0002] Power instruments and meters are used to monitor, detect, test, probe, detect, measure, observe, calculate and other processes of various physical quantities, material components, physical property parameters, etc. of power appliances or power equipment in various hydropower, wind power, thermal power, nuclear power, new energy and power generation, transmission, transformation, and distribution power plants and power stations. A power fault detector is a power meter with a long-distance detection function. Specifically, power meters are usually used to measure electrical parameters such as voltage, current, and power. At the same time, power instruments and meters also have functions such as remote detection, automatic control, alarm, signal transmission, and data processing;
[0003] There are still the following defects in specific use:
[0004] 1. Before the existing power meters are used, they are connected manually. Since the wiring parts of the power meters lack protection mechanisms, after a period of time, the wiring parts of the power meters will loosen at the joints under the action of external forces such as collision and pulling. If the wiring is disconnected, causing the current or voltage sensor to be unable to correctly connect to the circuit, it will lead to inaccurate measurement values or complete failure. At the same time, the disconnected wiring may cause damage to the instrument function or abnormal operation. In summary, the disconnection of the wiring of the power meter will cause the detection and control functions of the power detection meter to fail, thereby affecting the stability and reliability of the entire power system.
[0005] 2. In addition, when the existing power detection meters are used, they are usually connected to the equipment using wire harnesses. Most of the wire harnesses have uneven lengths. If the wire harness is too long, it is easy to cause the wire harness to be entangled, the wire harness to be scattered, and the wire body to fall off. All these situations will lead to chaos in the overall wiring, making the cables difficult to use and maintain. At the same time, it will also increase the difficulty of troubleshooting, maintenance, and wiring modification.
[0006] Therefore, in view of this, the present invention proposes a power meter with a long-distance detection function to make up for and improve the deficiencies of the existing technology. Summary of the Invention
[0007] To solve the above technical problems, the present invention provides a power meter with a long-distance detection function to solve the technical problems raised in the above background art.
[0008] To achieve the above object, the technical solution adopted by the present invention is as follows: A power meter with a long-distance detection function, including a meter assembly with a rectangular frame structure, a display screen is arranged on the outer surface of the meter assembly, a telescopic bracket is fixedly connected to the bottom end of the meter assembly, the telescopic bracket is in a three-sided shape, a plurality of communication interfaces are fixedly connected to the outer wall of the meter assembly close to the display screen, plugs are arranged on the outer walls of the plurality of communication interfaces far from the meter assembly, the shapes of the plurality of plugs are cylindrical, external power supply lines are fixedly connected to the outer walls of the plurality of plugs far from the communication interfaces, meter test clips are fixedly connected to the outer walls of the plurality of external power supply lines far from the plugs, the plurality of communication interfaces and the plugs are plugged and matched to realize the transmission of detection data, an active wiring safety mechanism is arranged on the outer wall of the communication interface, a follow-up wire management mechanism is arranged on the outer wall of the communication interface close to the meter assembly, and an opening and closing protection mechanism is arranged on the upper surface of the meter assembly;
[0009] The active wiring safety mechanism is used to ensure that the plug is firmly connected to the meter assembly, and to ensure the rationality and safety of the overall operation of the equipment detection;
[0010] The follow-up wire management mechanism is used to effectively manage the overlong wire harness, collect the redundant cables, and ensure the orderliness of the wire harness when the equipment is used;
[0011] The opening and closing protection mechanism is used to protect the wire harness from damage by the external environment.
[0012] Further, the active wiring safety mechanism includes an arc-shaped fixing plate fixedly connected to the outer wall of the plug, fixing shafts are fixedly connected through the inner walls of the arc-shaped fixing plates far from the plug, rotating blocks are fixedly connected to the outer walls of the fixing shafts, a lever is rotatably connected to the inner wall of the rotating block far from the fixing shaft, a first spring is fixedly connected to the outer wall of the lever close to the rotating block, a fixed sleeve is fixedly connected to the outer wall of the communication interface close to the plug, a square opening groove is formed on the top outer wall of the fixed sleeve, a first support tube is fixedly connected to the outer wall of the plug close to the external power supply line, a first electromagnet is fixedly connected to the outer wall of the first support tube far from the external power supply line, and a plug-in power supply is electrically connected to the inside of the communication interface.
[0013] Further, a plurality of the arc-shaped fixing plates are fixedly connected to the outer wall of the plug, the plurality of arc-shaped fixing plates are annularly distributed on the outer wall of the plug, the first springs are symmetrically distributed at both ends on the outer wall of the lever, a plurality of the fixed sleeves are fixedly connected to the outer wall of the communication interface, and the plurality of fixed sleeves are annularly distributed on the outer wall of the communication interface.
[0014] Furthermore, the interiors of the multiple fixed sheaths are penetrated. The penetration diameters of the multiple fixed sheaths are adapted to the diameter of the fixed shaft. The number of the multiple fixed sheaths is adapted to the number of the fixed shafts. The diameter of the multiple square opening grooves is adapted to the diameter of the lever.
[0015] Furthermore, the follow-up cable management mechanism includes an external plate body fixedly connected to the upper surface of the instrument assembly. Square sliders are slidably connected in the slide rails opened on the inner walls on both sides of the external plate body. A rotary spring is fixedly connected to the outer wall of one side of the square slider close to the external plate body. There are two rotary springs symmetrically arranged with the center axis of the square slider. A second support tube is fixedly connected to the upper outer wall of the square slider. A second electromagnet is fixedly connected to the end of the second support tube away from the rotary spring. A moving toothed plate is fixedly connected to the outer wall of one side of the square slider away from the rotary spring. There are two moving toothed plates symmetrically arranged with the center axis of the square slider. A large gear is arranged on the outer wall of one side of the two moving toothed plates away from the external plate body. A winding sheath is fixedly connected to the outer wall of the end of the large gear away from the external plate body. A wire clamping column is fixedly connected to the end of the winding sheath away from the large gear. A rotating shaft is fixedly connected to the end of the wire clamping column away from the large gear. A wire clamping device is fixedly connected to the outer wall of the rotating shaft. An inner shaft is fixedly connected to the outer wall of the end of the rotating shaft away from the wire clamping column. A torsion spring is fixedly connected to the outer wall of the end of the inner shaft away from the rotating shaft. A rotating plate is rotatably connected to the outer wall of one side of the external plate body away from the square slider.
[0016] Furthermore, a groove is opened in the interior of the external plate body. Slide rails are opened on the inner walls on both sides of the external plate body. The ends of the two rotary springs away from the square slider are fixedly connected to the inner wall of the external plate body. The two moving toothed plates are both slidably connected inside the slide rails opened on the inner walls on both sides of the external plate body. The second electromagnet and the first electromagnet are of the same pole. The final movement position of the second electromagnet is at the same level as the first electromagnet, that is, when the first electromagnet reaches the same horizontal position as the second support tube, they repel each other.
[0017] Furthermore, the large gear is rotatably connected to the inner axis center of the external plate body. The large gear meshes with the two moving toothed plates. An arc-shaped groove is opened on the outer wall of the wire clamping column. The diameter of the arc-shaped groove opened on the outer wall of the wire clamping column is adapted to the diameter of the power cord. There are two winding sheaths symmetrically arranged with the center axis of the wire clamping column. The distribution of the two winding sheaths is vertically distributed.
[0018] Furthermore, the inner wall diameter of one end of the wire clamping device close to the rotating shaft is adapted to the diameter of the rotating shaft. The inner wall shape of one end of the wire clamping device close to the rotating shaft is arc-shaped. The material of the wire clamping device is silicone.
[0019] Furthermore, the opening and closing protection mechanism includes a placement plate fixedly connected to the outer wall of the upper surface of the external plate body. One outer wall of the placement plate is fixedly connected with a slider body. The outer wall of the slider body is slidably connected with a first baffle plate. A connecting column is arranged on the outer wall of the first baffle plate away from the placement plate. One side surface of the first baffle plate away from the slider body is fixedly connected with a first sliding plate groove body. One outer wall of the slider body away from the first baffle plate is slidably connected with a second baffle plate. One upper surface of the second baffle plate away from the slider body is fixedly connected with an obstacle plate. One upper surface of the obstacle plate away from the second baffle plate is fixedly connected with a second sliding plate groove body. One outer wall of the placement plate near the center of the upper end of the second sliding plate groove body is rotatably connected with a small gear.
[0020] Furthermore, a square opening is formed at the center of the outer wall of the placement plate. A square groove is formed on the outer wall of the first baffle plate away from the placement plate. The connecting column is fixedly connected inside the square groove. One end of the connecting column away from the square groove is fixedly connected to the upper surface of the moving tooth plate. The initial position of the first sliding plate groove body is at half the width of the upper surface of the first baffle plate and on the side surface away from the placement plate. The initial positions of the obstacle plate and the second sliding plate groove body are both at half the width of the upper surface of the second baffle plate and on the side surface close to the placement plate. The small gear meshes with both the first sliding plate groove body and the second sliding plate groove body.
[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0022] (1) By using the cooperation of the lever and the square opening, the active wiring safety mechanism can ensure that the plug is firmly connected to the instrument assembly, preventing accidental loosening or detachment that may cause circuit short - circuit, fire or other safety problems. At the same time, through the active wiring safety mechanism, the connection between the plug and the instrument assembly can be kept stable, avoiding loosening or disconnection during vibration or movement, ensuring the stability and reliability of power transmission. Moreover, the active wiring safety mechanism can prevent users from accidentally pulling out or moving the plug, avoiding problems caused by misoperation. Especially in industrial environments or places with dense equipment, it helps to maintain the stability and consistency of operation. And the instrument assemblies of the active wiring safety mechanism are usually easy to maintain because they can reduce the loosening and wear of the plug connection part, reducing the maintenance frequency and cost.
[0023] (2) The present invention utilizes the cooperation of the wire clamping post and the torsion spring. Through the follow-up wire management mechanism, the redundant cables can be compactly stored, saving valuable space and improving the usage efficiency. Moreover, the wire harness is often damaged due to being pulled, squeezed or stepped on. The follow-up wire management mechanism can gently wind the cables, reducing the possibility of external damage to the cables, extending the service life of the cables. And by protecting the cables from damage, the follow-up wire management mechanism can reduce the frequency of cable repair and replacement, reduce the maintenance cost and downtime. In addition, the overly long wire harness is prone to causing tripping or cross-interference, leading to safety hazards. The follow-up wire management mechanism can neatly store the cables on the outer wall of the wire clamping post, reducing the possibility of accidents and improving the usage safety. Finally, the follow-up wire management mechanism can save the user's time and energy, reduce the operation of manual wiring, and improve the convenience and efficiency of the operation;
[0024] (3) The present invention utilizes the cooperation of the wire clamp and the rotating shaft. The wire clamp can effectively fix the wire harness, preventing it from loosening or falling off during transportation or use, and keeping the wire harness clean and orderly. Secondly, the wire harness often loosens or crosses on the wire clamping post, resulting in chaotic and intricate wiring. By fixing the wire harness with the wire clamp, the cross-interference and chaos of the wire harness can be effectively avoided, and the wiring can be kept clear and regular. In addition, the wire harness is prone to wear and damage due to long-term friction on the wire clamping post. The wire clamp can reduce the friction between the wire harness and the wire clamping post, extending the service life of the wire harness. At the same time, fixing the wire harness makes the maintenance and replacement of the wire harness more convenient and fast, without worrying about the loosening or difficulty of the wire harness. Finally, fixing the wire harness can reduce the risk of the wire harness loosening or falling off, reducing the possibility of safety accidents caused by wire harness problems;
[0025] (4) The present invention utilizes the cooperation of the first baffle and the second baffle. The opening and closing protection mechanism can completely wrap the wire harness inside, effectively protecting the wire harness from damage, extrusion or wear by external objects, extending the service life of the wire harness. At the same time, the opening and closing protection mechanism protecting the wire clamping post can effectively prevent dust, moisture or other sundries from entering the wire harness, improving the dust and waterproof performance of the wire harness and ensuring the normal operation of the instrument. And the external protection of the wire clamping post by the opening and closing protection mechanism can prevent human or accidental touch, avoiding the occurrence of short circuits, electric shocks or other safety accidents. In addition, by effectively protecting the wire harness from damage through the opening and closing protection mechanism, the maintenance work and replacement frequency of the wire harness are reduced, and the maintenance cost is lowered. Finally, the protection of the wire clamping post by the opening and closing protection mechanism also enables the user to easily open or close it, facilitating the inspection, replacement or maintenance of the wire harness, and improving the convenience and flexibility of the operation. Brief Description of the Drawings
[0026] Figure 1 is the front perspective structural schematic diagram of the present invention;
[0027] Figure 2Schematic diagram of the partial three-dimensional structure of the active wiring safety mechanism of the present invention;
[0028] Figure 3 Schematic diagram of the three-dimensional structure of the positional relationship between the first electromagnet and the first support tube of the present invention;
[0029] Figure 4 For the present invention Figure 3 Schematic diagram of the partial three-dimensional enlarged structure at position A in the present invention;
[0030] Figure 5 Schematic diagram of the partial three-dimensional structure of the semi-sectional view of the plug of the present invention;
[0031] Figure 6 Schematic diagram of the three-dimensional structure of the positional relationship between the first electromagnet and the second electromagnet of the present invention;
[0032] Figure 7 Schematic diagram of the three-dimensional structure of the positional relationship between the moving toothed plate and the large gear of the present invention;
[0033] Figure 8 Schematic diagram of the three-dimensional structure of the positional relationship between the wire clamping device and the rotating shaft of the present invention;
[0034] Figure 9 Schematic diagram of the three-dimensional structure of the positional relationship between the connecting column and the first baffle of the present invention;
[0035] Figure 10 Schematic diagram of the three-dimensional structure of the positional relationship between the first slide plate groove body and the second slide plate groove body of the present invention.
[0036] The reference numerals in the figure are: 1. Instrument assembly; 11. Display screen; 12. Instrument test clip; 13. Telescopic bracket; 14. Communication interface; 15. Plug; 16. External power cord; 2. Active wiring safety mechanism; 21. Fixed shaft; 22. Lever; 23. Spring 1; 24. Fixed housing; 25. Square opening groove body; 26. Rotating block; 27. Arc-shaped fixing plate; 28. First support tube; 29. First electromagnet; 210. Plug-in power supply; 3. Follow-up wire management mechanism; 31. External plate body; 32. Square slider; 33. Rotating spring; 34. Second support tube; 35. Second electromagnet; 36. Moving toothed plate; 37. Large gear; 38. Winding housing; 39. Wire clamping column; 310. Rotating shaft; 311. Wire clamping device; 312. Inner shaft; 313. Torsion spring; 314. Rotating plate; 4. Opening and closing protection mechanism; 41. Placement plate; 42. Slider body; 43. First baffle; 44. Connecting column; 45. First slide plate groove body; 46. Second slide plate groove body; 47. Small gear; 48. Obstacle plate; 49. Second baffle. Detailed implementation mode
[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention;
[0038] Please refer to Figure 1 As shown, a power meter with a long-distance detection function includes a meter assembly 1 with a rectangular frame structure. A display screen 11 is provided on the outer surface of the meter assembly 1. A telescopic bracket 13 is fixedly connected to the bottom end of the meter assembly 1. The telescopic bracket 13 is in a three-sided shape. A plurality of communication interfaces 14 are fixedly connected to the outer wall of the meter assembly 1 on the side close to the display screen 11. Plug heads 15 are provided on the outer walls of the plurality of communication interfaces 14 away from the meter assembly 1. The plurality of plug heads 15 are in a cylindrical shape. External power supply lines 16 are fixedly connected to the outer walls of the plurality of plug heads 15 away from the communication interfaces 14. Meter test clips 12 are fixedly connected to the outer walls of the plurality of external power supply lines 16 away from the plug heads 15. The plurality of communication interfaces 14 and the plug heads 15 are plugged and matched to realize the transmission of detection data;
[0039] Please refer to Figure 2 As shown, an active wiring safety mechanism 2 is provided on the outer wall of the communication interface 1. A follow-up wire management mechanism 3 is provided on the outer wall of the communication interface 1 close to the meter assembly 1. An opening and closing protection mechanism 4 is provided on the upper surface of the meter assembly 1;
[0040] Please refer to Figures 3 - 5 As shown, preferably, the active wiring safety mechanism 2 is used to ensure that the plug head 15 is firmly connected to the meter assembly 1, ensuring the rationality and safety of the overall operation of the equipment detection;
[0041] Please refer to Figure 3 As shown, preferably, the active wiring safety mechanism 2 includes an arc-shaped fixing plate 27 fixedly connected to the outer wall of the plug head 15. Fixed shafts 21 are fixedly connected through the inner walls of the arc-shaped fixing plate 27 away from the plug head 15. Rotating blocks 26 are fixedly connected to the outer walls of the fixed shafts 21. Pushing rods 22 are rotatably connected to the inner walls of the rotating blocks 26 away from the fixed shafts 21. A first spring 23 is fixedly connected to the outer wall of the pushing rod 22 close to the rotating block 26. A fixed sleeve 24 is fixedly connected to the outer wall of the communication interface 1 close to the plug head 15. A square opening groove 25 is opened on the top outer wall of the fixed sleeve 24. A first support tube 28 is fixedly connected to the outer wall of the plug head 15 close to the external power supply line 16. A first electromagnet 29 is fixedly connected to the outer wall of the first support tube 28 away from the external power supply line 16. A plug-in power supply 210 is electrically connected inside the communication interface 1;
[0042] Please refer to Figure 4 As shown, preferably, a plurality of arc-shaped fixing plates 27 are fixedly connected to the outer wall of the plug 15, and the plurality of arc-shaped fixing plates 27 are annularly distributed on the outer wall of the plug 15. The first springs 23 are symmetrically distributed at both ends on the outer wall of the lever 22. A plurality of fixed sleeve cases 24 are fixedly connected to the outer wall of the communication interface 14, and the plurality of fixed sleeve cases 24 are annularly distributed on the outer wall of the communication interface 14. When the fixed shaft 21 moves into the fixed sleeve case 24 during movement, the rotating block 26 will move together with the movement of the fixed shaft 21. When the lever 22 rotatably connected to the inner wall of the rotating block 26 moves to the square opening groove 25, it will be inserted into the square opening groove 25;
[0043] Please refer to Figure 5 As shown, preferably, the interiors of the plurality of fixed sleeve cases 24 are penetrated. The penetration diameters of the plurality of fixed sleeve cases 24 are adapted to the diameter of the fixed shaft 21. The quantity of the plurality of fixed sleeve cases 24 is adapted to the quantity of the fixed shafts 21. The diameter of the plurality of square opening grooves 25 is adapted to the diameter of the lever 22. The active wiring safety mechanism 2 can ensure that the plug 15 is firmly connected to the instrument assembly 1, preventing accidental loosening or detachment that may cause circuit short circuits, fires or other safety problems;
[0044] Please refer to Figures 6 - 8 As shown, preferably, the follow-up cable management mechanism 3 is used to effectively manage the overlong wire harness, store the excess cables, and ensure the orderliness of the wire harness during equipment use;
[0045] Please refer to Figure 6As shown, as preferably, the follow-up wire management mechanism 3 includes an external plate body 31 fixedly connected to the upper surface of the instrument assembly 1, and a square slider 32 is slidably connected in the slide rails opened on the inner walls of both sides of the external plate body 31, and the outer wall of the square slider 32 on one side close to the external plate body 31 is fixedly connected to a rotation spring 33, and two rotation springs 33 are symmetrically arranged around the central axis of the square slider 32, and the upper outer wall of the square slider 32 is fixedly connected to a second support tube 34, and the end of the second support tube 34 away from the rotation spring 33 is fixedly connected to a second electromagnet 35, and the outer wall of the square slider 32 on one side away from the rotation spring 33 is fixedly connected to a movable tooth plate 36, and the movable tooth plate 36 is aligned with the central axis of the square slider 32 There are two of them, and a large gear 37 is provided on the outer wall of one side of the two movable tooth plates 36 away from the external plate body 31, and a winding sleeve 38 is fixedly connected to the outer wall of one end of the large gear 37 away from the external plate body 31, and a wire clamping column 39 is fixedly connected to the end of the winding sleeve 38 away from the large gear 37, and a rotating shaft 310 is fixedly connected to the end of the wire clamping column 39 away from the large gear 37, and a wire clamp 311 is fixedly connected to the outer wall of the rotating shaft 310, and an inner shaft 312 is fixedly connected to the outer wall of the end of the rotating shaft 310 away from the wire clamping column 39, and a torsion spring 313 is fixedly connected to the outer wall of the end of the inner shaft 312 away from the rotating shaft 310, and a rotating plate 314 is rotatably connected to the outer wall of the side of the external plate body 31 away from the square slider 32;
[0046] Please refer to Figure 7 As shown, as a preferred embodiment, a groove is provided inside the external plate body 31, and slide rails are provided on the inner walls on both sides of the external plate body 31. One end of the two rotating springs 33 away from the square slider 32 is fixedly connected to the inner wall of the external plate body 31, and the two movable tooth plates 36 are slidably connected to the inside of the slide rails provided on the inner walls on both sides of the external plate body 31. The second electromagnet 35 and the first electromagnet 29 are of the same polarity, and the final moving position of the second electromagnet 35 is at the same level as the first electromagnet 29, that is, the first electromagnet 29 repel each other when it reaches the same horizontal position as the second support tube 34. The wiring harness will first be wound in the arc groove provided on the outer wall of the wiring harness post 39 as the wiring harness post 39 rotates, and then the inner shaft 312 will stop rotating when the torsional force of the torsion spring 313 reaches the maximum limit;
[0047] Please refer to Figure 7 As shown, as a preferred embodiment, the large gear 37 is rotatably connected to the internal axis of the external plate body 31, the large gear 37 is meshed with the two movable tooth plates 36, the outer wall of the clamping column 39 is provided with an arc groove, the diameter of the arc groove provided on the outer wall of the clamping column 39 is adapted to the diameter of the power line, and two reeling shells 38 are symmetrically arranged about the central axis of the clamping column 39, and the two reeling shells 38 are distributed vertically, and the follow-up wire management mechanism 3 can automatically roll the overlong wire harness into the clamping column 39, so that the cable wiring of the instrument assembly 1 is more neat and orderly, and the messy cable accumulation is avoided;
[0048] Please refer to Figure 8 As shown, preferably, the inner wall diameter of one end of the wire clamping device 311 close to the rotating shaft 310 is adapted to the diameter of the rotating shaft 310. The inner wall shape of one end of the wire clamping device 311 close to the rotating shaft 310 is arc-shaped. The material of the wire clamping device 311 is silica gel. A wire clamping device 311 is also fixedly connected to the outer wall of the rotating shaft 310, and the inner wall shape of one end of the wire clamping device 311 close to the rotating shaft 310 is arc-shaped. Thus, when the staff uses the device for testing, one end of the too-long wire harness can be first wound around the wire clamping device 311, and the plug-and-play can be realized as the rotating shaft 310 rotates;
[0049] Please refer to Figures 9 - 10 As shown, preferably, the opening and closing protection mechanism 4 is used to protect the wire harness from damage by the external environment;
[0050] Please refer to Figure 9 As shown, preferably, the opening and closing protection mechanism 4 includes a mounting plate 41 fixedly connected to the outer wall of the upper surface of the external plate body 31. A slider body 42 is fixedly connected to one side outer wall of the mounting plate 41. A first baffle 43 is slidably connected to the outer wall of the slider body 42. A connecting column 44 is arranged on the outer wall of the first baffle 43 away from the mounting plate 41. A first slide plate groove body 45 is fixedly connected to the surface of the first baffle 43 away from the slider body 42. A second baffle 49 is slidably connected to the outer wall of the slider body 42 away from the first baffle 43. An obstacle plate 48 is fixedly connected to the upper surface of the second baffle 49 away from the slider body 42. A second slide plate groove body 46 is fixedly connected to the upper surface of the obstacle plate 48 away from the second baffle 49. A small gear 47 is rotatably connected to the axis center of the outer wall of the mounting plate 41 near the second slide plate groove body 46;
[0051] Please refer to Figure 10 As shown, preferably, a square opening is provided at the axis center of the outer wall of the mounting plate 41. A square groove is provided on the outer wall of the first baffle 43 away from the mounting plate 41. The connecting column 44 is fixedly connected to the inside of the square groove. One end of the connecting column 44 away from the square groove is fixedly connected to the upper surface of the moving tooth plate 36. The initial position of the first slide plate groove body 45 is at half the width of the upper surface of the first baffle 43 and on the surface away from the mounting plate 41. The initial positions of the obstacle plate 48 and the second slide plate groove body 46 are both at half the width of the upper surface of the second baffle 49 and on the surface close to the mounting plate 41. The small gear 47 meshes with both the first slide plate groove body 45 and the second slide plate groove body 46. By the opposite movement of the first baffle 43 and the second baffle 49, the wire clamping column 39 is shielded and protected. The opening and closing protection mechanism 4 can completely wrap the wire harness inside, effectively protecting the wire harness from damage, extrusion or abrasion by external objects, and extending the service life of the wire harness;
[0052] The following are the complete usage steps and working principles of the above embodiments:
[0053] The device is mainly used for: Figure 1 As shown, first, install sensors or detection equipment at the location that needs to be monitored. These sensors can be of various types, such as temperature sensors, humidity sensors, current sensors, etc. Different types of sensors are selected according to needs. Secondly, connect the sensor to the end of the external power cord 16 away from the plug 15. At the same time, the instrument test clamp 12 fixedly connected to the outer wall of the end of the external power cord 16 away from the plug 15 clamps the external power cord 16 to facilitate the detection of the pressure value of the external power cord 16. Before use, the staff props up the telescopic bracket 13, and the plug 15 and the communication interface 14 are not in a connected state. Finally, the instrument component 1 starts to collect data obtained by the sensor, such as temperature, humidity, current and other information, and processes and organizes the collected data, and then transmits it to the remote monitoring center or data center through communication, and finally displays it on the display screen 11, so that the monitoring personnel can view the real-time data.
[0054] The active wiring safety mechanism 2 is used to ensure that the plug 15 is firmly connected to the instrument assembly 1 to ensure the rationality and safety of the overall operation of the equipment detection. When used specifically:
[0055] In the process of testing the stability and safety of the plug-in, Figure 3 , Figure 4 As shown, as the operator first inserts the external power cord 16 into the center of the plug 15, and the plug 15 is inserted into the communication interface 14, since the outer wall of the plug 15 is fixedly connected with an arc-shaped fixed plate 27, and the inner wall of the arc-shaped fixed plate 27 is fixedly connected with a fixed shaft 21, the fixedly installed fixed shaft 21 will move toward the fixed sleeve 24 fixedly installed on the outer wall of the communication interface 14. In addition, since a rotating block 26 is fixedly installed on the outer surface of one end of the fixed shaft 21, and the inner wall of the rotating block 26 is rotatably connected with a lever 22, and the outer wall of the fixed sleeve 24 is provided with a penetrating square opening groove 25, when the fixed shaft 21 enters the fixed sleeve 24 with movement, the rotating block 26 will move together with the movement of the fixed shaft 21, and then the lever 22 rotatably connected to the inner wall of the rotating block 26 moves to the square opening groove 25 and is inserted into the square opening groove 25. Figure 5As shown, a plurality of arc-shaped fixing plates 27 are annularly distributed on the outer wall of the plug 15, and a plurality of fixed sleeve shells 24 are annularly distributed on the outer wall of the communication interface 14. In addition, a plurality of square opening grooves 25 are formed on the outer wall of the fixed sleeve shell 24, making the fixing shaft 21 more firmly inserted into the fixed sleeve shell 24. Thus, the plug 15 is inserted into the power supply 210 to complete power connection, and then when the plug 15 is docked and powered on, the plug 15 is locked to prevent it from falling off due to external force during use, ensuring the rationality of the overall operation of the device. At the same time, both sides of the bottom end of the lever 22 are fixedly installed with a first spring 23, which also plays a role in clamping the lever 22 when it is inserted into the square opening groove 25 and is easy to recover during movement;
[0056] Summary 1: In contrast to the prior art, the wiring part of the instrument assembly 1 will have the problem of loose joints under external forces such as collision and pulling. When the fixing shaft 21 moves into the fixed sleeve shell 24 during movement, the rotating block 26 will move together with the movement of the fixing shaft 21. Then, when the lever 22 rotatably connected to the inner wall of the rotating block 26 moves to the square opening groove 25, it will be inserted into the square opening groove 25. The active wiring safety mechanism 2 can ensure that the plug 15 is firmly connected to the instrument assembly 1, preventing accidental loosening or detachment that may cause circuit short circuits, fires or other safety problems. At the same time, through the active wiring safety mechanism 2, the connection between the plug 15 and the instrument assembly 1 can be kept stable, avoiding loosening or disconnection during vibration or movement, ensuring the stability and reliability of power transmission. Moreover, the active wiring safety mechanism 2 can prevent users from accidentally pulling out or moving the plug, avoiding problems caused by misoperation, especially in industrial environments or places with dense equipment, which helps to maintain the stability and consistency of operation. In addition, the instrument assembly 1 with the active wiring safety mechanism 2 is usually easy to maintain because it can reduce the loosening and wear of the connection part of the plug 15, reducing the maintenance frequency and cost;
[0057] The follow-up wire management mechanism 3 is used to effectively manage too long wire harnesses, collect the redundant cables, and ensure the orderliness of the wire harness during device use. When the follow-up wire management mechanism 3 is specifically used:
[0058] In the step of wire management and storage, as Figure 3 shown, since a first support tube 28 is fixedly connected to the outer wall of the side of the plug 15 away from the communication interface 14, and a first electromagnet 29 is also fixedly connected to the end of the first support tube 28 away from the plug 15, so as Figure 6As shown, while the plug 15 is inserted manually, the first electromagnet 29 will move closer to one side of the second support tube 34, and the second electromagnet 35 and the first electromagnet 29 are of the same level. When the final movement position of the first electromagnet 29 is at the same level as the first support tube 28, that is, when the first electromagnet 29 reaches the same horizontal position as the second support tube 34, they will repel each other, causing the square slider 32 fixedly connected to the end of the second support tube 34 away from the second electromagnet 35 to slide on the slide rail opened on the inner wall of the outer connecting plate body 31 towards the side away from the inner wall of the outer connecting plate body 31. Moreover, a moving toothed plate 36 is fixedly connected to the outer wall of the side of the square slider 32 away from the outer connecting plate body 31, and two moving toothed plates 36 are symmetrically arranged with the center of the square slider 32 as the axis. The two moving toothed plates 36 are also slidably connected to the slide rail. Therefore, when the square slider 32 moves towards the side away from the outer connecting plate body 31, it will synchronously drive the two moving toothed plates 36 to slide. In addition, as Figure 7 shown, both of the two moving toothed plates 36 are engaged with the large gear 37. The moving toothed plate 36 and the large gear 37 constitute an engaged transmission, and the large gear 37 is rotatably connected to the inner axis of the outer connecting plate body 31. Therefore, as the two moving toothed plates 36 move, they will synchronously drive the large gear 37 to rotate. Furthermore, the wire clamping column 39 fixedly connected to the end of the large gear 37 away from the outer connecting plate body 31 will rotate together with the rotation of the large gear 37. And as Figure 8 shown, a rotating shaft 310 is also fixedly connected to the end of the wire clamping column 39 away from the winding sleeve 38. At the same time, an inner shaft 312 is fixedly connected to the end of the rotating shaft 310 away from the winding sleeve 38. Therefore, the rotation of the wire clamping column 39 will also drive the rotating shaft 310 and the inner shaft 312 to rotate together. Therefore, the rotation of the inner shaft 312 will cause the torsion spring 313 fixedly connected to the outer wall of the inner shaft 312 to twist and be stressed. Thus, when the operator uses the device, he will flip the rotating plate 314 to one side, then first clamp one end of the too long wire harness in the arc-shaped groove opened on the outer wall of the wire clamping column 39. Subsequently, the wire harness will first wind around the arc-shaped groove opened on the outer wall of the wire clamping column 39 as the wire clamping column 39 rotates. Secondly, when the torsion spring 313 is twisted and stressed to the maximum extent, the rotation of the inner shaft 312 will stop. Furthermore, the stop of the rotation of the torsion spring 313 will also cause the rotating wire clamping column 39 to stop, thereby realizing the winding process of the too long wire harness, preventing the too long wire harness from affecting the use of the device, and ensuring the orderly operation of the device;
[0059] Overview II: Compared with most of the prior art, the lengths of wire harnesses are uneven. If the wire harness is too long, it is likely to cause entanglement. This mechanism enables the wire harness to first wind around the arc-shaped groove formed on the outer wall of the wire clamping post 39 as the wire clamping post 39 rotates. Secondly, when the torsional force of the torsion spring 313 reaches the maximum, the rotation of the inner shaft 312 will stop. The follow-up wire management mechanism 3 can automatically wind the overly long wire harness into the wire clamping post 39, making the cable routing of the instrument assembly 1 more tidy and orderly, avoiding the accumulation of messy cables. Secondly, overly long wire harnesses may occupy a large amount of space, easily causing wiring chaos and space waste. With the follow-up wire management mechanism 3, the redundant cables can be neatly stored, saving valuable space and improving the usage efficiency. Moreover, wire harnesses are often damaged due to being pulled, squeezed, or stepped on. The follow-up wire management mechanism 3 can gently wind the cables, reducing the possibility of external damage to the cables and extending the service life of the cables. And by protecting the cables from damage, the follow-up wire management mechanism 3 can reduce the frequency of cable repair and replacement, reducing maintenance costs and downtime. In addition, overly long wire harnesses are likely to cause tripping or cross-interference, leading to safety hazards. The follow-up wire management mechanism 3 can neatly store the cables on the outer wall of the wire clamping post 39, reducing the possibility of accidents and improving the usage safety. Finally, the follow-up wire management mechanism 3 can save the user's time and energy, reduce the operation of manual wiring, and improve the convenience and efficiency of operation;
[0060] When the wire clamping device 311 for convenient pulling is specifically used:
[0061] As Figure 8 shown, a wire clamping device 311 is also fixedly connected to the outer wall of the rotating shaft 310, and the inner wall shape of one end of the wire clamping device 311 close to the rotating shaft 310 is arc-shaped. Thus, when the staff is using the device for testing, one end of the overly long wire harness can first wind around the wire clamping device 311, and with the rotation of the rotating shaft 310, it can be used in a plug-and-play manner, so that the lengths of the wire harnesses are not uneven and it is convenient for pulling. Moreover, the wire clamping device 311 is made of rubber, ensuring its durability and anti-drop property, improving the reliability and practicality of the device. Also, because a telescopic bracket 13 is installed at the bottom, the device can be lifted for use in some places with uneven ground, avoiding the bottom of the device from contacting the ground and improving the durability of the device;
[0062] Summary III: Compared with the prior art, the wire harnesses are of uneven lengths and are prone to cross-use. With this mechanism, when the staff uses the device for testing, one end of the too-long wire harness can be first wound around the wire clamping device 311, and with the rotation of the rotating shaft 310, it can be plugged and used immediately. The wire clamping device 311 can effectively fix the wire harness, preventing it from loosening or falling off during transportation or use, keeping the wire harness clean and orderly. Secondly, the wire harness often loosens or crosses on the wire clamping column 39, resulting in chaotic and intricate wiring. By fixing the wire harness with the wire clamping device 311, the cross-interference and chaos of the wire harness can be effectively avoided, keeping the wiring clear and regular. In addition, the wire harness is prone to wear and damage due to long-term friction on the wire clamping column 39. The wire clamping device 311 can reduce the friction between the wire harness and the wire clamping column 39, extend the service life of the wire harness, and at the same time fixing the wire harness makes the maintenance and replacement of the wire harness more convenient and fast, without worrying about the loosening or difficulty of the wire harness. Finally, fixing the wire harness can reduce the risk of the wire harness loosening or falling off, and reduce the possibility of safety accidents caused by wire harness problems;
[0063] The opening and closing protection mechanism 4 for protecting the wire harness from external environmental damage is specifically used as follows:
[0064] As Figure 9 、 Figure 10 shown, when the square slider 32 moves away from the outer connecting plate body 31 and synchronously drives the two moving toothed plates 36 to slide, the connecting column 44 fixedly connected to the upper surface of the moving toothed plate 36 will move synchronously. In addition, one end of the connecting column 44 away from the moving toothed plate 36 is fixedly connected to the inside of the square groove opened on the surface of the first baffle 43 away from the placement plate 41. Therefore, when the connecting column 44 follows the moving toothed plate 36 and moves away from the outer connecting plate body 31, it will synchronously push the first baffle 43 to move to the right on the outer wall of the slider body 42. In addition, a first slide plate groove body 45 is fixedly connected to the half-width position on the upper surface of the first baffle 43, and the first slide plate groove body 45 is located on the surface away from the placement plate 41. Thus, when the first baffle 43 moves to the right on the outer wall of the slider body 42, it will jointly drive the first slide plate groove body 45 to slide to the right on the upper surface of the slider body 42. In addition, a small gear 47 is engaged with the outer wall of the first slide plate groove body 45, and the first slide plate groove body 45 and the small gear 47 form an engaged transmission. The rightward sliding of the first slide plate groove body 45 will also drive the small gear 47 to rotate. Furthermore, the outer wall of the small gear 47 is also engaged with a second slide plate groove body 46. Therefore, when the small gear 47 rotates, it will also drive the second slide plate groove body 46 to move to the left. The lower end of the second slide plate groove body 46 is fixedly connected to an obstacle plate 48, and the lower end of the obstacle plate 48 is fixedly connected to a second baffle 49. Therefore, when the obstacle plate 48 and the second slide plate groove body 46 at the half-width position on the upper surface of the second baffle 49 move to the left, they will jointly drive the second baffle 49 to move to the left on the outer wall of the slider body 42. In summary, the wire clamping column 39 is shielded and protected through the opposite movement of the first baffle 43 and the second baffle 49.
[0065] Summary Four: Compared with the prior art, the wire harness is exposed externally and is easily damaged by extrusion. This mechanism realizes the shielding protection of the wire clamping post 39 through the opposite movement of the first baffle 43 and the second baffle 49. The opening and closing protection mechanism 4 can completely wrap the wire harness inside, effectively protecting the wire harness from damage, extrusion or abrasion by external objects, extending the service life of the wire harness. At the same time, the opening and closing protection mechanism 4 protecting the wire clamping post 39 can effectively prevent dust, moisture or other sundries from entering the wire harness, improve the dust and waterproof performance of the wire harness, ensure the normal operation of the instrument, and the external protection of the wire clamping post 39 by the opening and closing protection mechanism 4 can prevent human or accidental touch, avoid the occurrence of short circuit, electric shock or other safety accidents, and effectively protect the wire harness from damage through the opening and closing protection mechanism 4, reducing the maintenance work and replacement frequency of the wire harness, lowering the maintenance cost. Finally, the protection of the wire clamping post 39 by the opening and closing protection mechanism 4 also enables the user to easily open or close it, facilitating the inspection, replacement or maintenance of the wire harness, and improving the convenience and flexibility of operation.
[0066] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An electric power meter with a long-distance detection function, comprising an instrument assembly (1) with a rectangular frame structure, wherein a display screen (11) is arranged on the outer surface of the instrument assembly (1), a telescopic bracket (13) is fixedly connected to the bottom end of the instrument assembly (1), the telescopic bracket (13) is in a triangular shape, a plurality of communication interfaces (14) are fixedly connected to the outer wall of the instrument assembly (1) on one side close to the display screen (11), a plurality of the communication interfaces (14) are provided with plugs (15) on the outer walls at one end away from the instrument assembly (1), the plurality of the plugs (15) are in a cylindrical shape, a plurality of the plugs (15) are fixedly connected to the outer walls at one end away from the communication interface (14), a plurality of the external power cords (16) are fixedly connected to the outer walls at one end away from the plugs (15), a plurality of the communication interfaces (14) are plugged in and matched with the plugs (15) to realize detection data transmission, characterized in that: The outer wall of the communication interface (14) is provided with an active wiring safety mechanism (2), the outer wall of the communication interface (14) on one side close to the instrument assembly (1) is provided with a follow-up wire management mechanism (3), and the upper surface of the instrument assembly (1) is provided with an opening and closing protection mechanism (4); the active wiring safety mechanism (2) is used to ensure that the plug (15) is firmly connected to the instrument assembly (1) to ensure the rationality and safety of the overall operation of the equipment detection; the follow-up wire management mechanism (3) is used to effectively manage the overlong wire harness and store the excess cables to ensure the orderliness of the wire harness when the equipment uses the wire harness; the opening and closing protection mechanism (4) is used to protect the wire harness from damage by the external environment, and the active wiring safety mechanism (2) includes a fixed connection An arc-shaped fixed plate (27) is arranged on the outer wall of the plug (15); a fixed shaft (21) is penetrated and fixedly connected to the inner wall of the arc-shaped fixed plate (27) on the side away from the plug (15); a rotating block (26) is fixedly connected to the outer wall of the fixed shaft (21); a lever (22) is rotatably connected to the inner wall of the rotating block (26) on the side away from the fixed shaft (21); a spring (23) is fixedly connected to the outer wall of one end of the lever (22) close to the rotating block (26); a fixed sleeve (24) is fixedly connected to the outer wall of the side of the communication interface (14) close to the plug (15); a square opening groove (25) is provided on the top outer wall of the fixed sleeve (24); and an outer wall of one end of the plug (15) close to the external power cord (16) is fixedly connected to the outer wall of the fixed sleeve (24). A first support tube (28) is fixedly connected, and a first electromagnet (29) is fixedly connected to the outer wall of one end of the first support tube (28) away from the external power line (16); the interior of the communication interface (14) is electrically connected to a plug-in power supply (210); a plurality of arc-shaped fixing plates (27) are fixedly connected to the outer wall of the plug (15); the plurality of arc-shaped fixing plates (27) are distributed in an annular shape on the outer wall of the plug (15); the spring 1 (23) is symmetrically distributed at both ends of the outer wall of the lever (22); a plurality of fixed sleeves (24) are fixedly connected to the outer wall of the communication interface (14); the plurality of fixed sleeves (24) are distributed in an annular shape on the outer wall of the communication interface (14); the interior of the plurality of fixed sleeves (24) penetrates The through diameters of the plurality of fixed sleeves (24) are matched to the diameter of the fixed shaft (21); the number of the plurality of fixed sleeves (24) is matched to the number of the fixed shafts (21); the diameters of the plurality of square opening slots (25) are matched to the diameter of the lever (22); the follow-up wire management mechanism (3) comprises an external plate (31) fixedly connected to the upper surface of the instrument assembly (1); a square slider (32) is slidably connected in a slide rail provided on the inner walls on both sides of the external plate (31); a rotation spring (33) is fixedly connected to the outer wall of the square slider (32) on one side close to the external plate (31); two rotation springs (33) are symmetrically arranged about the central axis of the square slider (32);The upper outer wall of the square slider (32) is fixedly connected to a second support tube (34); one end of the second support tube (34) away from the rotation spring (33) is fixedly connected to a second electromagnet (35); the outer wall of the square slider (32) on one side away from the rotation spring (33) is fixedly connected to a movable tooth plate (36); two movable tooth plates (36) are symmetrically arranged about the central axis of the square slider (32); large gears (37) are arranged on the outer walls of the two movable tooth plates (36) on one side away from the external plate body (31); a winding sleeve (38) is fixedly connected to the outer wall of one end of the large gear (37) away from the external plate body (31); the winding sleeve (38) is fixedly connected to the outer wall of the second support tube (34) away from the rotation spring (33); 38) is fixedly connected to a wire clamping column (39) at one end away from the large gear (37), and the wire clamping column (39) is fixedly connected to a rotating shaft (310) at one end away from the large gear (37). The outer wall of the rotating shaft (310) is fixedly connected to a wire clamping device (311). The outer wall of the end of the rotating shaft (310) away from the wire clamping column (39) is fixedly connected to an inner shaft (312), and the outer wall of the end of the inner shaft (312) away from the rotating shaft (310) is fixedly connected to a torsion spring (313). The outer wall of one side of the external plate body (31) away from the square slider (32) is rotatably connected to a rotating plate (314). A groove is provided inside the external plate body (31). Slide rails are provided on the inner walls of both sides of the plate body (31); one end of the two rotating springs (33) away from the square slider (32) is fixedly connected to the inner wall of the external plate body (31); the two movable tooth plates (36) are slidably connected to the inside of the slide rails provided on the inner walls of both sides of the external plate body (31); the second electromagnet (35) and the first electromagnet (29) have the same polarity; the final movement position of the second electromagnet (35) is at the same level as the first electromagnet (29), that is, the first electromagnet (29) repels each other when it reaches the same horizontal position as the second support tube (34); the large gear (37) is rotatably connected to the inner axis of the external plate body (31); The large gear (37) is meshed with the two movable tooth plates (36), the outer wall of the wire clamping column (39) is provided with an arc groove, the diameter of the arc groove provided on the outer wall of the wire clamping column (39) is adapted to the diameter of the power cord, two winding shells (38) are symmetrically arranged about the central axis of the wire clamping column (39), the two winding shells (38) are vertically distributed, the inner wall diameter of one end of the wire clamping device (311) close to the rotating shaft (310) is adapted to the diameter of the rotating shaft (310), the inner wall shape of one end of the wire clamping device (311) close to the rotating shaft (310) is circular arc-shaped, and the material of the wire clamping device (311) is silicone.
2. The electric power meter with long-distance detection function according to claim 1, characterized in that: The opening and closing protection mechanism (4) comprises a placement plate (41) fixedly connected to the outer wall of the upper surface of the external plate body (31); a slider body (42) is fixedly connected to one side outer wall of the placement plate (41); a first baffle plate (43) is slidably connected to the outer wall of the slider body (42); a connecting column (44) is provided on the outer wall of the first baffle plate (43) on the side away from the placement plate (41); a first slide plate groove body (45) is fixedly connected to the surface of the first baffle plate (43) on the side away from the slider body (42); a second baffle plate (49) is slidably connected to the outer wall of one end of the slider body (42) away from the first baffle plate (43); an obstruction plate (48) is fixedly connected to the upper surface of the second baffle plate (49) on the side away from the slider body (42); a second slide plate groove body (46) is fixedly connected to the upper surface of the obstruction plate (48) on the side away from the second baffle plate (49); and a pinion gear (47) is rotatably connected to the axis of the top outer wall of one side of the placement plate (41) close to the second slide plate groove body (46).
3. The electric power meter with long-distance detection function according to claim 2, characterized in that: A square opening is provided at the axis center of the outer wall of the placement plate (41); a square groove is provided on the outer wall of the first baffle plate (43) on a side away from the placement plate (41); the connecting column (44) is fixedly connected to the inside of the square groove; one end of the connecting column (44) away from the square groove is fixedly connected to the upper surface of the movable tooth plate (36); the initial position of the first slide groove body (45) is located at half the width of the upper surface of the first baffle plate (43) and away from the side surface of the placement plate (41); the initial positions of the barrier plate (48) and the second slide groove body (46) are both located at half the width of the upper surface of the second baffle plate (49) and close to the side surface of the placement plate (41); and the pinion (47) is meshed with the first slide groove body (45) and the second slide groove body (46).
Citation Information
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