Automatic inspection cabinet for fire pump
By using moisture-proof plates and fixed strip structures in the fire pump automatic inspection cabinet, the inside of the cabinet body is kept dry and closed, and the wires are neatly tied, the problems of unstable use of traditional fire pump automatic inspection cabinets in humid environments are solved, and the safety and maintenance convenience of the equipment are improved.
Patent Information
- Application Number
- CN202520514864.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2035-03-24
AI Technical Summary
When used in humid environments, traditional fire pump automatic inspection cabinets are likely to cause circuit breakage, and internal electronic components are connected in a mess, affecting maintenance and maintenance.
An automatic fire pump inspection cabinet is designed, using moisture-proof board and fixed strip structure to keep the inside of the cabinet dry and sealed, and the wire harness limiting plate and protective ring are neatly tied to avoid mess.
It realizes the normal operation of the circuit in a humid environment, improves the safety and convenience of the equipment, and the neat wiring harness layout facilitates subsequent maintenance.
Smart Images
Figure CN222788379U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field related to fire fighting technology, in particular to an automatic inspection cabinet for fire fighting pumps. Background Art
[0002] Fire pump automatic inspection cabinet, this device can prevent fire pump corrosion, moisture and abnormal operation of the water pump. During the fire inspection, an inspection cabinet is usually used to check the working status of the fire pump control cabinet and the fire hydrant control cabinet. However, the existing fire pump automatic inspection cabinet has certain defects. Since there are a large number of automated circuit components inside the inspection cabinet, it cannot be used in a humid environment. During the installation process, in a humid environment, water vapor will be generated inside the inspection cabinet, which is extremely likely to cause a circuit break, greatly reducing the safety of the inspection cabinet.
[0003] In the process of realizing the present utility model, it was found that the prior art had the following problems: 1. During the use of the traditional fire pump automatic inspection cabinet, since it has the functions of automatic detection and remote monitoring and control, there are a large number of circuit components inside the equipment, and it is necessary to avoid a humid environment inside the equipment to affect the normal operation of the circuit; 2. There are many electronic components inside the traditional fire pump automatic inspection cabinet, and the connecting data lines between them will be relatively messy, which will affect the subsequent inspection and maintenance work of the users. Utility Model Content
[0004] The purpose of the present utility model is to provide an automatic inspection cabinet for fire pumps, so as to solve the problems of the lack of moisture-proof adjustment components and the lack of wiring structure in the traditional automatic inspection cabinet for fire pumps mentioned in the above background technology. To achieve the above purpose, the present utility model provides the following technical solutions: an automatic inspection cabinet for fire pumps, comprising an inspection cabinet body, a cabinet door body is provided in the middle of the front end surface of the inspection cabinet body, and a group of intelligent control panels are installed in the middle of the cabinet door body, a group of heat dissipation notches are provided in the middle of the left and right side surfaces of the inspection cabinet body, and a group of through grooves are provided in the middle of the left and right sides of the bottom end surface of the inspection cabinet body;
[0005] A group of sliding sealing plates are arranged on the inner side of the through slot of the inspection cabinet body, and a group of protective rings are arranged on the inner middle of the rear end of the through slot, a group of moisture-proof plates are arranged on one side of the heat dissipation slot close to the inner middle of the inspection cabinet body, and a group of signal transmission modules are arranged on the middle of the left and right sides of the inner upper end of the inspection cabinet body;
[0006] A group of rectangular through-slide grooves are provided on both upper and lower sides of the middle part of the rear end surface of the inspection cabinet body, and a group of fixing strips are provided on one side of the through-slide grooves close to the middle part of the inner side of the inspection cabinet body, a group of wire harness limiting plates are provided at equal intervals on the bottom side of the inner rear end surface of the inspection cabinet body, and a group of slide rails are provided on the bottom end of the rear side of the inner wall of the inspection cabinet body;
[0007] A group of rectangular sliding grooves are provided in the middle of the upper and lower sides of the inner wall of the fixing strip, and a group of sliding adjustment shafts are provided in the middle of the inner side of the fixing strip, a group of fixing bolts are provided in the middle of the inner side of the sliding adjustment shaft, and the upper end of the fixing strip is slotted and connected with a locking shaft, and the middle of the rear end surface of the locking shaft is slotted and connected with a locking knob;
[0008] A group of wire harness fixing rings are symmetrically arranged on the left and right sides of the inner middle part of the wire harness limiting plate, and the front and rear ends of the wire harness fixing rings are slotted and connected with a group of elastic sliding rods, a group of pressing rods are connected to the middle part of the rear end surface of the wire harness limiting plate, and a group of limiting bevel blocks are symmetrically arranged on the left and right sides of the rear end of the pressing rods, and the outer surface of the limiting bevel blocks is connected with a sliding round button.
[0009] Further preferably, one side surface of the moisture-proof plate close to the heat dissipation slot is fixed to the middle part of the left and right side surfaces of the inner wall of the inspection cabinet body by screws, and the upper and lower side ends of the signal transmission module are connected to the left and right side surfaces of the upper end of the inner wall of the inspection cabinet body by screw fixings, and the middle part of the protective ring is fixedly mounted on the inner side of the inner wall of the bottom circular groove of the inspection cabinet body, the upper and lower side surfaces of the sliding sealing plate are slidably connected to the inner wall of the rectangular through groove at the bottom end of the inspection cabinet body, and the middle part of the sliding sealing plate is grooved and slidably connected to the middle part of the sliding rod inside the sliding groove at the bottom end of the inspection cabinet body through a spring.
[0010] Further preferably, the left and right side surfaces of the rear end of the locking shaft are slidably connected to the inner wall of the rear end rectangular through-slide groove of the inspection cabinet body, and the front end end of the locking knob is threadedly connected to the inner wall of the rear end threaded groove of the locking shaft, and the upper end of the fixing bar is grooved and rotatably connected to the front end of the locking shaft, and the rear end front side surface of the locking knob is fixed with an anti-slip pad.
[0011] Further preferably, the upper and lower end portions of the sliding adjustment shaft are slidably connected to the inner wall of the rectangular slide groove on the inner wall of the fixing bar, and the middle part of the fixing bolt is threadedly connected to the inner wall of the middle circular groove of the sliding adjustment shaft, and the front side surfaces of the fixing bolt and nut are tightly attached to the middle part of the rear end surface of the sliding adjustment shaft.
[0012] Further preferably, the left and right end portions of the elastic sliding rod are fixed to the left and right sides of the inner wall of the wiring harness limiting plate, and a group of traction springs are sleeved on the middle part of the left and right ends of the elastic sliding rod, and the two end portions of the traction springs are respectively connected to the inner wall of the wiring harness limiting plate and the front and rear end surfaces of the wiring harness fixing ring.
[0013] Further preferably, a group of protective gaskets are fixed to the middle of the inner arc surface of the wiring harness fixing ring, and the inner walls of the circular grooves at the front and rear ends of the wiring harness fixing ring are slidably connected to the middle of the elastic sliding rod.
[0014] Further preferably, the front end portion of the pressing rod is fixed to the middle part of the rear surface of the wiring harness limiting plate, and the middle part of the pressing rod is connected to the inner wall of the sliding round button by a spring, and the middle part of the pressing rod is slidably connected to the inner wall of the circular groove in the middle part of the front end surface of the sliding round button, the rear end inclined surface of the pressing rod is tightly attached to the inclined surface of one end of the limiting inclined block close to the middle part of the inner side of the sliding round button, and the middle part of the limiting inclined block is slidably connected to the inner wall of the rectangular sliding groove in the middle part of the sliding round button through a spring.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] In the utility model, a moisture-proof plate and a fixing strip are provided. By grooving on the left and right surfaces of the inspection cabinet body to provide heat dissipation slots, and by connecting the moisture-proof plate to the inner side, the interior of the inspection cabinet body can maintain a dry and closed environment. At the same time, the position of the detection device can be adjusted by adjusting the height position of the fixing strip inside the rectangular groove at the rear end of the inspection cabinet body, so that the detection device can be kept away from the fire pump body to prevent water stains on the fire pump from affecting the normal operation of the detection device.
[0017] In the utility model, a protective ring and a wiring harness limiting plate are provided. By slotting two groups of grooves at the bottom end of the inspection cabinet body and providing a protective ring, the connecting wiring harness can be concentrated on the inner side of the protective ring. At the same time, the wiring harness inside the inspection cabinet body can be clamped and fixed by the wiring harness fixing ring in the middle of the inner side of the wiring harness limiting plate, so that the wiring harness inside the inspection cabinet body can be neatly routed to avoid the influence of cluttered space on subsequent maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 This is an enlarged structural diagram of the moisture-proof board of the utility model;
[0020] Figure 3 This is an enlarged structural diagram of the fixing bar of the utility model;
[0021] Figure 4 This is an enlarged structural diagram of the wiring harness fixing ring of the utility model;
[0022] Figure 5 It is a schematic diagram of the enlarged structure of the sliding round button of the utility model.
[0023] In the figure: 1. Inspection cabinet body; 2. Cabinet door body; 3. Heat dissipation slot; 4. Intelligent control panel; 5. Sliding sealing plate; 6. Moisture-proof plate; 7. Signal transmission module; 8. Protective ring; 9. Fixing bar; 10. Wire harness limit plate; 11. Locking knob; 12. Locking shaft; 13. Fixing bolt; 14. Sliding adjustment shaft; 15. Wire harness fixing ring; 16. Elastic sliding rod; 17. Sliding round button; 18. Pressing rod; 19. Limiting bevel block. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.
[0025] See also Figures 1 to 5 The utility model provides a technical solution: an automatic inspection cabinet for fire pumps, comprising an inspection cabinet body 1, a cabinet door body 2 is provided in a groove in the middle of the front end surface of the inspection cabinet body 1, and a group of intelligent control panels 4 are installed in the middle groove of the cabinet door body 2, a group of heat dissipation notches 3 are provided in the middle of the left and right side surfaces of the inspection cabinet body 1, and a group of through grooves are provided in the middle of the left and right sides of the bottom end surface of the inspection cabinet body 1;
[0026] A group of sliding sealing plates 5 are provided on the inner side of the through groove of the inspection cabinet body 1, and a group of protective rings 8 are provided on the inner middle of the rear end of the through groove, a group of moisture-proof plates 6 are provided on the side of the heat dissipation slot 3 close to the inner middle of the inspection cabinet body 1, and a group of signal transmission modules 7 are provided on the inner upper side of the inspection cabinet body 1.
[0027] A set of rectangular through-slide grooves are provided on both upper and lower sides of the middle of the rear end surface of the inspection cabinet body 1, and a set of fixing strips 9 are provided on one side of the through-slide grooves close to the middle of the inner side of the inspection cabinet body 1, a set of wire harness limiting plates 10 are provided at equal intervals on the bottom side of the inner rear end surface of the inspection cabinet body 1, and a set of slide rails are provided at the bottom end of the rear side of the inner wall of the inspection cabinet body 1;
[0028] A set of rectangular sliding grooves are provided in the middle of the upper and lower sides of the inner wall of the fixing bar 9, and a set of sliding adjustment shafts 14 are provided in the middle of the inner side of the fixing bar 9, and a set of fixing bolts 13 are provided in the middle of the inner side of the sliding adjustment shaft 14, and the upper end of the fixing bar 9 is slotted and connected with a locking shaft 12, and the middle of the rear end surface of the locking shaft 12 is slotted and connected with a locking knob 11;
[0029] A group of wire harness fixing rings 15 are symmetrically arranged on the left and right sides of the inner middle part of the wire harness limiting plate 10, and the front and rear ends of the wire harness fixing rings 15 are slotted and connected with a group of elastic sliding rods 16. A group of pressing rods 18 are connected to the middle part of the rear end surface of the wire harness limiting plate 10, and a group of limiting bevel blocks 19 are symmetrically arranged on the left and right sides of the rear end of the pressing rods 18, and the outer surface of the limiting bevel blocks 19 is connected with a sliding round button 17.
[0030] In this embodiment, Figure 2 As shown, the side surface of the moisture-proof plate 6 close to the heat dissipation slot 3 is fixed to the middle of the left and right surfaces of the inner wall of the inspection cabinet body 1 by screws, and the upper and lower end portions of the signal transmission module 7 are connected to the left and right surfaces of the upper end of the inner wall of the inspection cabinet body 1 by screw fixings, and the middle part of the protective ring 8 is fixedly sleeved on the inner side of the inner wall of the bottom circular groove of the inspection cabinet body 1, and the upper and lower side surfaces of the sliding sealing plate 5 are slidably connected to the inner wall of the bottom rectangular through-groove of the inspection cabinet body 1, and the middle part of the sliding sealing plate 5 is grooved and slidably connected to the middle part of the sliding rod inside the sliding groove at the bottom end of the inspection cabinet body 1 through a spring; moisture-proof plates 6 are provided in the middle of the left and right ends of the inner side of the inspection cabinet body 1 to establish a dry and sealed environment, and the wiring harness passing through the inspection cabinet body 1 is locked by the protective ring 8 and the sliding sealing plate 5.
[0031] In this embodiment, Figure 3 As shown, the left and right side surfaces of the rear end of the locking shaft 12 are slidably connected to the inner wall of the rear end rectangular through-slot of the inspection cabinet body 1, and the front end of the locking knob 11 is threadedly connected to the inner wall of the rear end threaded groove of the locking shaft 12, and the upper end of the fixing bar 9 is slotted and rotatably connected to the front end of the locking shaft 12, and the rear front surface of the locking knob 11 is fixed with an anti-slip pad; the locking shaft 12 is arranged inside the rear side of the rear rectangular through-slot of the inspection cabinet body 1, and the locking shaft 12 and the fixing bar 9 are adjusted and fixed inside the rectangular groove of the inspection cabinet body 1 by rotating the locking knob 11.
[0032] In this embodiment, Figure 3As shown, the upper and lower ends of the sliding adjustment shaft 14 are slidably connected to the inner wall of the rectangular slide groove of the inner wall of the fixing bar 9, and the middle part of the fixing bolt 13 is threadedly connected to the inner wall of the middle circular groove of the sliding adjustment shaft 14, and the front side surface of the nut of the fixing bolt 13 is tightly attached to the middle part of the rear end surface of the sliding adjustment shaft 14; the sliding adjustment shaft 14 is slidably arranged on the inner side of the fixing bar 9, and then the detection equipment is fixed to the front side of the fixing bar 9 together with the sliding adjustment shaft 14 through the fixing bolt 13.
[0033] In this embodiment, Figure 4 As shown, the left and right ends of the elastic sliding rod 16 are fixed to the left and right sides of the inner wall of the wire harness limiting plate 10, and a group of traction springs are sleeved in the middle of the left and right ends of the elastic sliding rod 16, and the two end ends of the traction springs are respectively connected to the inner wall of the wire harness limiting plate 10 and the front and rear end surfaces of the wire harness fixing ring 15; two groups of elastic sliding rods 16 are symmetrically arranged on the inner side of the wire harness limiting plate 10, and the elastic force of the traction springs sleeved on the left and right sides of the elastic sliding rod 16 enables the wire harness fixing ring 15 to be tightly attached to the left and right sides of the wire harness.
[0034] In this embodiment, Figure 4 As shown, a group of protective gaskets are fixed to the middle part of the inner arc surface of the wire harness fixing ring 15, and the inner walls of the circular grooves at the front and rear ends of the wire harness fixing ring 15 are slidably connected to the middle part of the elastic sliding rod 16; by arranging protective gaskets on the inner side of the wire harness fixing ring 15, the wire harness fixing ring 15 can be fixed on both sides of the wire harness by the elastic clamping on both sides.
[0035] In this embodiment, Figure 5 As shown, the front end portions of the pressing rod 18 are fixed to the middle part of the rear surface of the wiring harness limiting plate 10, and the middle parts of the pressing rod 18 are connected to the inner wall of the sliding round button 17 by means of a spring sleeve, and the middle parts of the pressing rod 18 are penetrated and slidably connected to the inner wall of the circular groove in the middle part of the front end surface of the sliding round button 17, and the rear end inclined surfaces of the pressing rod 18 are tightly attached to the inclined surfaces of one end of the limiting inclined block 19 close to the middle part of the inner side of the sliding round button 17, and the middle parts of the limiting inclined blocks 19 are slidably connected to the inner wall of the rectangular sliding groove in the middle part of the sliding round button 17 through a spring; by connecting the pressing rod 18 to the rear end of the wiring harness limiting plate 10, the user can pull the wiring harness limiting plate 10 and slide the sliding round button 17 along the slide rail inside the inspection cabinet body 1 to adjust the position, so as to facilitate the binding of the data line.
[0036] The use method and advantages of the utility model: When the fire pump automatic inspection cabinet is in use, the working process is as follows:
[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, first, the user can fix and lock the rear end of the detection device to the middle of the sliding adjustment shaft 14 through the fixing bolt 13, and adaptively adjust the position of the sliding adjustment shaft 14 inside the fixing bar 9. After determining the position, the locking knob 11 threadedly connected to the end of the locking shaft 12 on the rear side of the fixing bar 9 is used to lock the locking shaft 12 inside the rectangular groove on the rear side of the inspection cabinet body 1;
[0038] The wiring harness inside the inspection cabinet body 1 is placed inside the wiring harness fixing ring 15, and the wiring harness inside the wiring harness fixing ring 15 is limited by the elastic force of the traction spring connected to the middle of the elastic sliding rod 16 at the front and rear ends of the wiring harness fixing ring 15. At the same time, the user can pull the wiring harness limiting plate 10 so that the pressing rod 18 connected to the middle of the rear end of the wiring harness limiting plate 10 can slide along the front end circular groove of the sliding round button 17, and the limiting inclined block 19 can be retracted into the groove of the sliding round button 17 by the elastic force of the spring, and then the sliding round button 17 can be pulled to adjust the position of the sliding round button 17 inside the slide rail inside the inspection cabinet body 1. At the same time, the wiring harness connected to the inside of the inspection cabinet body 1 is passed through the protective ring 8 and can be slidably locked inside the protective ring 8 through the sliding sealing plate 5. During the detection work, the equipment inside the inspection cabinet body 1 adjusts the value through the intelligent control panel 4 on the front side of the cabinet door body 2, and dissipates heat through the heat dissipation slot 3, and is moisture-proof through the moisture-proof plate 6, and at the same time, the signal transmission module 7 remotely transmits data to the control device.
[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. A fire pump automatic inspection cabinet, comprising an inspection cabinet body (1), characterized in that: The front end surface of the inspection cabinet body (1) is grooved in the middle to provide a cabinet door body (2), and the cabinet door body (2) is grooved in the middle to install a group of intelligent control panels (4), the left and right side surfaces of the inspection cabinet body (1) are grooved in the middle to provide a group of heat dissipation notches (3), and the bottom end surface of the inspection cabinet body (1) is grooved in the middle to provide a group of through grooves on both left and right sides; A group of sliding sealing plates (5) are arranged on the inner side of the through slot of the inspection cabinet body (1), and a group of protective rings (8) are arranged on the inner middle of the rear end of the through slot, a group of moisture-proof plates (6) are arranged on one side of the heat dissipation slot (3) close to the inner middle of the inspection cabinet body (1), and a group of signal transmission modules (7) are arranged on the inner middle of the left and right sides of the upper end of the inspection cabinet body (1); A group of rectangular through-slide grooves are provided on both upper and lower sides of the middle of the rear end surface of the inspection cabinet body (1), and a group of fixing strips (9) are provided on one side of the through-slide grooves close to the middle of the inner side of the inspection cabinet body (1), a group of wire harness limiting plates (10) are provided at equal intervals on the bottom side of the inner rear end surface of the inspection cabinet body (1), and a group of slide rails are provided on the bottom end of the rear side of the inner wall of the inspection cabinet body (1); A group of rectangular sliding grooves are provided in the middle of the upper and lower sides of the inner wall of the fixing strip (9), and a group of sliding adjustment shafts (14) are provided in the middle of the inner side of the fixing strip (9), and a group of fixing bolts (13) are provided in the middle of the inner side of the sliding adjustment shaft (14), and the upper end of the fixing strip (9) is slotted and connected to a locking shaft (12), and the middle of the rear end surface of the locking shaft (12) is slotted and connected to a locking knob (11); A group of wire harness fixing rings (15) are symmetrically arranged on the left and right sides of the inner middle part of the wire harness limiting plate (10), and the front and rear ends of the wire harness fixing rings (15) are slotted and connected to a group of elastic sliding rods (16), a group of pressing rods (18) are connected to the middle part of the rear end surface of the wire harness limiting plate (10), and a group of limiting inclined blocks (19) are symmetrically arranged on the left and right sides of the rear end of the pressing rods (18), and the outer surface of the limiting inclined blocks (19) is connected to the sliding round button (17).
2. The automatic inspection cabinet for fire pumps according to claim 1 is characterized in that: The side surface of the moisture-proof plate (6) close to the heat dissipation slot (3) is fixed to the middle of the left and right surfaces of the inner wall of the inspection cabinet body (1) by screws, and the upper and lower ends of the signal transmission module (7) are connected to the left and right surfaces of the upper end of the inner wall of the inspection cabinet body (1) by screw fixings, and the middle part of the protective ring (8) is fixedly sleeved on the inner side of the inner wall of the bottom circular groove of the inspection cabinet body (1), the upper and lower side surfaces of the sliding sealing plate (5) are slidably connected to the inner wall of the rectangular through-groove at the bottom of the inspection cabinet body (1), and the middle part of the sliding sealing plate (5) is slotted and slidably connected to the middle part of the sliding rod inside the sliding groove at the bottom of the inspection cabinet body (1) by a spring.
3. The fire pump automatic inspection cabinet according to claim 1 is characterized in that: The left and right side surfaces of the rear end of the locking shaft (12) are slidably connected to the inner wall of the rear end rectangular through-slot of the inspection cabinet body (1), and the front end of the locking knob (11) is threadedly connected to the inner wall of the rear end thread groove of the locking shaft (12), and the upper end of the fixing bar (9) is slotted and rotatably connected to the front end of the locking shaft (12), and the front side surface of the rear end of the locking knob (11) is fixed with an anti-slip pad.
4. The fire pump automatic inspection cabinet according to claim 1 is characterized in that: The upper and lower ends of the sliding adjustment shaft (14) are slidably connected to the inner wall of the rectangular sliding groove on the inner wall of the fixing bar (9), and the middle part of the fixing bolt (13) is threadedly connected to the inner wall of the middle circular groove of the sliding adjustment shaft (14), and the front side surface of the nut of the fixing bolt (13) is tightly attached to the middle part of the rear end surface of the sliding adjustment shaft (14).
5. The fire pump automatic inspection cabinet according to claim 1 is characterized in that: The left and right ends of the elastic sliding rod (16) are fixed to the left and right sides of the inner wall of the wire harness limiting plate (10), and a group of traction springs are sleeved in the middle of the left and right ends of the elastic sliding rod (16), and the two end portions of the traction springs are respectively connected to the inner wall of the wire harness limiting plate (10) and the front and rear end surfaces of the wire harness fixing ring (15).
6. The fire pump automatic inspection cabinet according to claim 1 is characterized by: A group of protective gaskets are fixed to the middle of the inner arc surface of the wire harness fixing ring (15), and the inner walls of the circular grooves at the front and rear ends of the wire harness fixing ring (15) are slidably connected to the middle of the elastic sliding rod (16).
7. The fire pump automatic inspection cabinet according to claim 1 is characterized in that: The front end of the pressing rod (18) is fixed to the middle of the rear side surface of the wiring harness limiting plate (10), and the middle of the pressing rod (18) is connected to the inner wall of the sliding round button (17) by means of a spring sleeve, and the middle of the pressing rod (18) penetrates and is slidably connected to the inner wall of the circular groove in the middle of the front end surface of the sliding round button (17), the rear end inclined surface of the pressing rod (18) is tightly attached to the inclined surface of one end of the limiting inclined block (19) close to the inner middle of the sliding round button (17), and the middle of the limiting inclined block (19) is slidably connected to the inner wall of the rectangular sliding groove in the middle of the sliding round button (17) by means of a spring.