CN114447812A - Combined electrical cabinet with remote monitoring function for electrical engineering - Google Patents

Abstract

The invention discloses a combined electrical cabinet with remote monitoring function for electrical engineering, which comprises a fixed base and a rubber pad, wherein a cavity is formed in the fixed base, a plurality of radiating fans are fixedly connected in the cavity, a fixed plate is fixedly connected to the top end of the fixed base at the top end of the fixed base, the rubber pad is fixedly connected to two sides of the bottom end of the fixed base, a second electrical cabinet is fixedly connected to the top end of the fixed plate, sliding doors are rotatably connected to two side walls of a built-in cavity, a plurality of air holes I are formed in a top plate, and a shielding assembly is arranged at the top end of the top plate. The invention not only realizes the heat dissipation function of the combined electrical cabinet for electrical engineering with remote monitoring when in use, realizes the dustproof function of the combined electrical cabinet for electrical engineering with remote monitoring when in use, but also realizes the function of convenient assembly when in use.

Description

A combined electrical cabinet for electrical engineering with remote monitoring

technical field

The invention relates to the technical field of electrical engineering, in particular to a combined electrical cabinet for electrical engineering with remote monitoring.

Background technique

Electrical engineering basically covers almost all engineering behaviors related to electronics and photons. With the continuous development of electrical engineering, computer networks can be put into use, enabling people to carry out the information age. Electrical cabinets are a kind of electrical components synthesized from metal materials. The device for protection. Due to the small internal stock of a single electrical cabinet, there will be insufficient phenomenon when there are too many electrical components, and the combined type can facilitate the user to increase the number of electrical cabinets, which is convenient for users to use and reduces the cost of There is a possibility that the user is not enough inside when using it. At the same time, a long-distance detection is installed inside, which is convenient for the user to monitor the internal situation and reduces the probability of failure without knowing it during use.

There are many types of such combined electrical cabinets for electrical engineering on the market today, which can basically meet people's needs, but there are still certain problems. When the combined electrical cabinet is in use, there will be internal heat accumulation, which will lead to damage to the internal components. At the same time, due to the possibility of dust accumulation inside the combined electrical cabinet for electrical engineering, it will bring certain troubles to the user. Finally, it is inconvenient to combine and assemble the combined electrical cabinet for electrical engineering when it is used, which makes the combined electrical cabinet for electrical engineering extremely inconvenient to use.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a combined electrical cabinet for electrical engineering with remote monitoring, so as to solve the problem of heat accumulation in the above-mentioned background technology, which leads to damage to internal components. It brings certain troubles and inconvenience in combination and assembly.

In order to achieve the above purpose, the present invention provides the following technical solution: a combined electrical cabinet for electrical engineering with remote monitoring, comprising a fixed base and a rubber pad, a cavity is opened inside the fixed base, and the interior of the cavity is Several cooling fans are fixedly connected, the top of the fixed base is fixedly connected to the top of the fixed base with a fixed plate, both sides of the bottom of the fixed base are fixedly connected with rubber pads, and the top of the fixed plate is fixedly connected with an electrical cabinet Second, the top of the electrical cabinet 2 is fixedly connected with a bottom plate 2, an electrical cabinet 1 is arranged above the bottom plate 2, and the bottom end of the electrical cabinet 1 is fixedly connected with a bottom plate 1. Installation components are provided on the sides, and built-in cavities are opened inside the second electrical cabinet and the first electrical cabinet. The interior of the built-in cavity is fixedly connected with a storage rod, and a camera is arranged between the adjacent storage rods. A limit ring is fixedly connected to the inner wall of the built-in cavity on one side of the camera, a limit component is arranged inside the limit ring and the camera, and the limit ring outside the limit component and the inside of the camera are provided with four thread grooves. Both side walls of the built-in cavity are rotatably connected with sliding doors, the top of the electrical cabinet 1 is fixedly connected with a top plate, the interior of the top plate is provided with a number of ventilation holes, and the top of the top plate is provided with a shielding component.

Preferably, the installation assembly includes a telescopic rod fixedly connected to the bottom ends of the bottom plate, the bottom ends of the telescopic rods are all fixedly connected with a bottom bracket, and one side of the top end of the bottom bracket is fixedly connected with a return spring, and the return spring The top end of the bottom plate is fixedly connected with the bottom end of the bottom plate 2, the top end of the bottom bracket on one side of the reset spring is fixedly connected with a connecting plate, and one side of the connecting plate is fixedly connected with a connecting rod, and the connecting rod is far from the bottom end of the connecting plate. A clamping rod is fixedly connected, and a surface of the bottom plate below the clamping rod is provided with a concave cavity.

Preferably, the outer size of the clamping rod is smaller than the inner size of the cavity, and the clamping rod is sleeved with the cavity.

Preferably, a "C" shape is formed between the connecting rod, the connecting plate and the bottom bracket.

Preferably, a plurality of ventilation holes 2 are opened in the interior of the bottom plate 1 and the bottom plate 2, the ventilation holes 2 in the bottom plate 1 and the bottom plate 2 are in one-to-one correspondence, and the bottom plate 1 and the bottom plate 2 outside the ventilation holes 2 are inside. A number of threaded counterbores are opened, and fixing bolts are threadedly connected inside the threaded counterbores.

Preferably, the shielding assembly includes a rotating shaft rotatably connected to the top of the top plate, the surface of the rotating shaft is fixedly connected with a sleeve rod, one side of the sleeve rod is rotatably connected with a folding plate, and the top of the top plate on one side of the folding plate is fixed Connect the limit plate.

Preferably, the cooling fans are distributed at equal intervals inside the cavity, a shielding plate is arranged on one side of the cavity, and the shielding plate is fixed to the side wall of the fixing base by fixing screws.

Preferably, a plurality of ventilation holes 3 are opened in the interior of the fixing plate and the fixing base, and the ventilation holes 3 are distributed at equal intervals in the interior of the fixing plate.

Preferably, the limiting assembly includes four limiting grooves formed on the inner wall of the limiting ring, the interior of the limiting grooves are all provided with limiting blocks, and one side of the limiting blocks is fixedly connected with a limiting spring , one end of the limit spring away from the limit block is fixedly connected with the side wall of the camera.

Preferably, the limiting blocks and the limiting grooves are designed in a one-to-one correspondence, and the limiting blocks and the limiting grooves are snap-connected.

Compared with the prior art, the beneficial effects of the present invention are: the combined electrical cabinet for electrical engineering with remote monitoring not only realizes the heat dissipation function of the combined electrical cabinet for electrical engineering with remote monitoring during use, but also achieves The dustproof function of the combined electrical cabinet for electrical engineering with remote monitoring in use, and the function of easy assembly when the combined electrical cabinet for electrical engineering with remote monitoring is realized;

(1) By arranging a cavity and a cooling fan inside the fixed base, and setting a fixing plate, a second ventilation hole and a first ventilation hole above the fixed base, the cooling fan will pass through the fixing plate, the second ventilation hole and the first ventilation hole when in use. The hot air is exhausted to realize the heat dissipation function of the combined electrical cabinet for electrical engineering with remote monitoring during use, thereby improving the service life of the combined electrical cabinet for electrical engineering with remote monitoring;

(2) By arranging a rotating shaft, a sleeve rod, a limit plate and a folding plate at the top of the top plate, the folding plate outside the rotating shaft can be retracted and shielded during use, and the combined electrical cabinet for electrical engineering with remote monitoring is realized. The dustproof function during use reduces the possibility of internal dust accumulation when the combined electrical cabinet for electrical engineering with remote monitoring is used;

(3) By arranging a bottom bracket, a return spring, a connecting plate, a connecting rod, a clamping rod and a cavity between the base plate 1 and the base plate 2, the clamping rod will move the base plate 1 and the base plate 2 under the elastic action of the return spring during use. Limit clamping, and then lock the electrical cabinet 2 and electrical cabinet 1 through threaded countersunk holes and fixing bolts, so as to realize the function of easy assembly when the combined electrical cabinet for electrical engineering with remote monitoring is used, thereby improving the The convenience of using the combined electrical cabinet for electrical engineering with remote monitoring.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the present invention;

Fig. 2 is the partial enlarged structural schematic diagram of A in Fig. 1 of the present invention;

3 is a schematic diagram of the internal structure of the fixed base of the present invention;

Fig. 4 is the top plan view structure schematic diagram of the top plate of the present invention;

FIG. 5 is a schematic diagram of the retractable structure of the shielding assembly of the present invention;

6 is a schematic diagram of the internal structure of the limiting ring of the present invention;

FIG. 7 is a schematic top view structure diagram of the second base plate of the present invention.

In the figure: 1. Fixed base; 2. Blocking plate; 3. Fixing screw; 4. Rubber pad; 5. Sliding door; connecting plate; 704, connecting rod; 705, clamping rod; 706, cavity; 707, telescopic rod; 8, electrical cabinet 1; 801, top plate; 9, built-in cavity; 10, ventilation hole 1; 11, shielding component; 1101 , rotating shaft; 1102, sleeve rod; 1103, limit plate; 1104, folding plate; 12, threaded countersunk hole; 13, fixing bolt; 14, ventilation hole two; 15, limit ring; 16, electrical cabinet two; 17, Camera; 18, bottom plate one; 19, bottom plate two; 20, cooling fan; 21, cavity; 22, ventilation hole three; 23, fixed plate; ; 2403, limit spring; 25, thread groove.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-7, an embodiment provided by the present invention: a combined electrical cabinet for electrical engineering with remote monitoring, comprising a fixed base 1 and a rubber pad 4, the interior of the fixed base 1 is provided with a cavity 21, It is convenient to place the fixing plate 23 in the interior of the cavity 21. Several cooling fans 20 are fixedly connected to the interior of the cavity 21. The side is provided with a shielding plate 2, the shielding plate 2 is fixed with the side wall of the fixed base 1 by the fixing screw 3, the shielding plate 2 is fixed with the fixing base 1 by the fixing screw 3, and the shielding plate 2 can be replaced by turning the fixing screw 3 at the same time. , the top of the fixed base 1 is fixedly connected to the top of the fixed base 1 with a fixed plate 23, the interior of the fixed plate 23 and the fixed base 1 are both provided with a number of ventilation holes 3 22, and the ventilation holes 3 22 are equally spaced inside the fixed board 23 Distribution, the cavity 21 can blow hot air to the outside of the electrical cabinet 2 16 and the electrical cabinet 1 8 through the ventilation holes 3 22, the fixing bolts 13 and the ventilation holes 10, and reduce the internal appearance of the electrical cabinet 1 8 and the electrical cabinet 2 16. possible damage to components.

Both sides of the bottom end of the fixed base 1 are fixedly connected with rubber pads 4, which increases the friction force between the fixed base 1 and the desktop. The top of the fixed plate 23 is fixedly connected with the electrical cabinet 2 16, and the top of the electrical cabinet 16 is fixedly connected with a The bottom plate 2 19 is provided with an electrical cabinet 1 8 above the bottom plate 2 19 , and the bottom end of the electrical cabinet 1 8 is fixedly connected with the bottom plate 1 18 . The design of the electrical cabinet 2 16 and the electrical cabinet 1 8 facilitates the installation of electrical components.

There are several ventilation holes 214 in the bottom plate 1 18 and the bottom plate 2 19, which are convenient for the electrical cabinet 1 8 and the electrical cabinet 2 16 to dissipate heat. A large number of threaded counterbores 12 are opened inside the bottom plate 18 and the bottom plate 2 19 outside the ventilation hole 2 14, and the inside of the threaded counterbore 12 is threadedly connected with fixing bolts 13, which is convenient for the electrical cabinet. Two 16 and electrical cabinet one 8 are locked.

Both sides of the bottom plate 18 and the bottom plate 2 19 are provided with installation components 7. The installation components 7 include a telescopic rod 707 fixedly connected to the bottom end of the bottom plate 19. The bottom ends of the telescopic rods 707 are fixedly connected with a bottom bracket 701. The bottom bracket 701 A return spring 702 is fixedly connected to one side of the top end. Under normal conditions, the bottom bracket 701 does not generate tension. The top end of the return spring 702 is fixedly connected to the bottom end of the bottom plate 19, and the top end of the bottom bracket 701 on one side of the return spring 702 is fixed. A connecting plate 703 is connected, and one side of the connecting plate 703 is fixedly connected with a connecting rod 704. The connecting rod 704, the connecting plate 703 and the bottom bracket 701 are designed in a "C" shape, which is convenient for the connecting plate 703 to connect to the bottom plate 18 and the bottom plate 2 19 For docking, the bottom end of the connecting rod 704 away from the connecting plate 703 is fixedly connected with a clamping rod 705. The outer size of the clamping rod 705 is smaller than the inner size of the cavity 706, and the clamping rod 705 is sleeved with the cavity 706, which is convenient for the bottom plate 18 Docking with the position of the second bottom plate 19, a cavity 706 is provided on the surface of the bottom plate one 18 under the clamping rod 705. When using this mechanism, the connecting plate 703 is pulled to increase the distance between the connecting rod 704 and the second bottom plate 19, and then Overlap the bottom plate 18 at the bottom of the electrical cabinet 18 with the bottom plate 2 19. After the cavity 706 is aligned with the clamping rod 705, release the connecting plate 703. At this time, the connecting plate 703 will be under the elastic action of the return spring 702. The rod 705 is docked with the cavity 706 to limit the positions of the bottom plate one 18 and the bottom plate two 19, so that the position of the electrical cabinet one 8 is fixed, and at the same time, the positions between the ventilation hole two 14 and the threaded counterbore 12 are fixed one by one. correspond.

Inside the electrical cabinet 2 16 and the electrical cabinet 1 8, a built-in cavity 9 is opened, and the inside of the built-in cavity 9 is fixedly connected with a storage rod 6, which is convenient for installing electrical components in the built-in cavity 9. The camera 17 can monitor the interior of the built-in cavity 9, and at the same time transmit the data to the interior of the main machine through the microcontroller for display.

A limit ring 15 is fixedly connected to the inner wall of the built-in cavity 9 on one side of the camera head 17 , a limit assembly 24 is arranged inside the limit ring 15 and the camera head 17 , and the limit ring 15 outside the limit assembly 24 and the camera head 17 are provided with four The threaded groove 25, the limit component 24 includes four limit grooves 2401 formed on the inner wall of the limit ring 15, the limit blocks 2402 are arranged inside the limit grooves 2401, and the limit blocks 2402 correspond to the limit grooves 2401 one-to-one In the design, the limit block 2402 and the limit slot 2401 are snapped together, which facilitates the installation and positioning of the camera 17. One side of the limit block 2402 is fixedly connected to the limit spring 2403, and the end of the limit spring 2403 away from the limit block 2402 is connected to the limit spring 2403. It is fixedly connected to the side wall of the camera 17. When using this mechanism, the camera 17 is sleeved with the limit ring 15, and then the camera 17 is rotated. At this time, the limit block 2402 outside the camera 17 will be under the elastic action of the limit spring 2403. , to limit the position of the camera head 17 , rotate and tighten the screws with the camera head 17 and the threaded groove 25 inside the limit ring 15 to fix the position of the camera head 17 .

Both side walls of the built-in cavity 9 are rotatably connected with sliding doors 5, which are convenient for closing the built-in cavity 9. The top of the electrical cabinet 8 is fixedly connected with a top plate 801, and the interior of the top plate 801 is provided with a number of ventilation holes 10, which is convenient for The second electrical cabinet 16 and the electrical cabinet one 8 dissipate heat. The top of the top plate 801 is provided with a shielding component 11. The shielding component 11 includes a rotating shaft 1101 that is rotatably connected to the top of the top plate 801. The surface of the rotating shaft 1101 is fixedly connected with a sleeve rod 1102. A folding plate 1104 is rotatably connected to one side of the folding plate 1104, and a limit plate 1103 is fixedly connected to the top of the top plate 801 on one side of the folding plate 1104. When this mechanism is used, the rotating shaft 1101 can be rotated during heat dissipation. The folding plate 1104 is retracted to the side of the limit plate 1103 under the action of the electric cabinet 1103 to facilitate the heat dissipation of the electrical cabinet one 8 and the electrical cabinet two 16. At this time, since the wind is blowing upward, the electrical cabinet one 8 and the electrical cabinet two 16 The probability of dust entering the inside of the cabinet is very small. When not only dissipating heat, rotate the rotating shaft 1101 in the opposite direction to cover the ventilation holes 10 to reduce the possibility of dust appearing inside the electrical cabinet 2 16 and the electrical cabinet 1 8 when placed.

Working principle: When in use, the combined electrical cabinet for electrical engineering with remote monitoring is connected to an external power supply. Referring to Figure 1 and Figure 6, first, the camera 17 is socketed with the limit ring 15, and then the camera 17 is rotated. At this time, the camera 17 The outer limit block 2402 will limit the position of the camera 17 under the elastic action of the limit spring 2403, and the position of the camera 17 is fixed by rotating and tightening the screw with the camera 17 and the threaded groove 25 inside the limit ring 15. , when in use, the camera 17 can monitor the interior of the built-in cavity 9, and at the same time transmit the data to the interior of the main machine through the single-chip microcomputer for display;

1, 2 and 7, when the electrical cabinet one 8 and the electrical cabinet two 16 are assembled, pull the connecting plate 703 to increase the distance between the connecting rod 704 and the bottom plate 19, and then assemble the electrical cabinet one. 8. The bottom plate 18 and the bottom plate 19 at the bottom overlap. After the cavity 706 is aligned with the clamping rod 705, the connecting plate 703 is released. At this time, the connecting plate 703 will be under the elastic action of the return spring 702. The cavity 706 is docked to limit the positions of the bottom plate 18 and the bottom plate 19, so that the position of the electrical cabinet 1 8 is fixed, and the positions between the ventilation hole 2 14 and the threaded counterbore 12 are in a one-to-one correspondence, and the electrical Cabinet one 8 and electrical cabinet two 16 are installed;

Finally, referring to FIGS. 1 , 3 , 4 and 5 , during heat dissipation, the cooling fan 20 inside the cavity 21 is controlled to operate. At this time, the cavity 21 will be in the ventilation hole 3 22 , the fixing bolt 13 and the ventilation hole 10 . , blow the hot air to the outside of the electrical cabinet 2 16 and the electrical cabinet 1 8 to reduce the possibility of component damage in the electrical cabinet 1 8 and the electrical cabinet 2 16, and rotate the shaft 1101 at the same time. Under the action, the folding plate 1104 is retracted to the side of the limit plate 1103 to facilitate the heat dissipation of the electrical cabinet one 8 and the electrical cabinet two 16. At this time, since the wind is blowing upward, the electrical cabinet one 8 and the electrical cabinet two 16 are separated. The probability of dust entering the interior is very small. When not only dissipating heat, rotate the rotating shaft 1101 in the opposite direction to cover the ventilation holes 1 10 to reduce the possibility of dust appearing inside the electrical cabinet 2 16 and the electrical cabinet 1 8 during placement, and finally complete the Working of combined electrical cabinets for electrical engineering with remote monitoring.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (10)

1. The utility model provides a combination formula regulator cubicle for electrical engineering with remote monitoring, includes unable adjustment base (1) and rubber pad (4), its characterized in that: a cavity (21) is formed in the fixed base (1), a plurality of radiating fans (20) are fixedly connected in the cavity (21), a fixed plate (23) is fixedly connected to the top end of the fixed base (1) at the top end of the fixed base (1), rubber pads (4) are fixedly connected to two sides of the bottom end of the fixed base (1), an electrical cabinet II (16) is fixedly connected to the top end of the fixed plate (23), a bottom plate II (19) is fixedly connected to the top end of the electrical cabinet II (16), an electrical cabinet I (8) is arranged above the bottom plate II (19), a bottom plate I (18) is fixedly connected to the bottom end of the electrical cabinet I (8), mounting assemblies (7) are arranged on two sides of the bottom plate I (18) and the bottom plate II (19), and built-in cavities (9) are formed in the electrical cabinet II (16) and the electrical cabinet I (8), the utility model discloses a safe and convenient storage cabinet, including built-in chamber (9), camera (17), spacing ring (25), push-and-pull door (5), the inside fixedly connected with of built-in chamber (9) of camera (17) one side puts thing pole (6), and is adjacent put and be provided with camera (17) between the thing pole (6), fixedly connected with spacing ring (15) on the inner wall of built-in chamber (9) of camera (17) one side, the inside of spacing ring (15) and camera (17) in the spacing ring (24) outside is provided with four thread grooves (25), all rotate on the both sides wall of built-in chamber (9) and be connected with push-and-pull door (5), the top fixedly connected with roof (801) of regulator cubicle (8), a plurality of bleeder vent (10) have been seted up to the inside of roof (801), the top of roof (801) is provided with and shelters from subassembly (11).

2. The electrical cabinet with remote monitoring function for electrical engineering of claim 1, wherein: the mounting component (7) comprises a telescopic rod (707) fixedly connected to the bottom end of a second bottom plate (19), the bottom ends of the telescopic rods (707) are fixedly connected with a bottom support (701), one side of the top end of the bottom support (701) is fixedly connected with a reset spring (702), the top end of the reset spring (702) is fixedly connected with the bottom end of the second bottom plate (19), the top end of the bottom support (701) on one side of the reset spring (702) is fixedly connected with a connecting plate (703), one side of the connecting plate (703) is fixedly connected with a connecting rod (704), the bottom end of the connecting plate (703) is far away from the connecting rod (704) is fixedly connected with a clamping rod (705), and a cavity (706) is formed in the surface of the first bottom plate (18) below the clamping rod (705).

3. The combined electrical cabinet with remote monitoring function for electrical engineering according to claim 2, wherein: the outer dimension of the clamping rod (705) is smaller than the inner dimension of the concave cavity (706), and the clamping rod (705) is sleeved with the concave cavity (706).

4. The electrical cabinet with remote monitoring function for electrical engineering of claim 2, wherein: the connecting rod (704), the connecting plate (703) and the bottom support (701) are in a C-shaped design.

5. The electrical cabinet with remote monitoring function for electrical engineering of claim 1, wherein: a plurality of air holes II (14) are formed in the first base plate (18) and the second base plate (19), the air holes II (14) in the first base plate (18) and the second base plate (19) correspond to each other one by one, a plurality of thread counter bores (12) are formed in the first base plate (18) and the second base plate (19) in the outer side of the air holes II (14), and fixing bolts (13) are connected to the inner portions of the thread counter bores (12) in a threaded mode.

6. The electrical cabinet with remote monitoring function for electrical engineering of claim 1, wherein: shelter from subassembly (11) including rotating pivot (1101) of connecting on roof (801) top, the fixed surface of pivot (1101) is connected with loop bar (1102), one side of loop bar (1102) is rotated and is connected with folded sheet (1104), roof (801) top fixedly connected with limiting plate (1103) of folded sheet (1104) one side.

7. The electrical cabinet with remote monitoring function for electrical engineering of claim 1, wherein: the heat dissipation fan (20) is distributed in the cavity (21) at equal intervals, a shielding plate (2) is arranged on one side of the cavity (21), and the shielding plate (2) is fixed to the side wall of the fixing base (1) through a fixing screw (3).

8. The electrical cabinet with remote monitoring function for electrical engineering of claim 1, wherein: a plurality of air holes III (22) are formed in the fixing plate (23) and the fixing base (1), and the air holes III (22) are distributed in the fixing plate (23) at equal intervals.

9. The electrical cabinet with remote monitoring function for electrical engineering of claim 1, wherein: spacing subassembly (24) are including seting up four spacing groove (2401) on spacing ring (15) inner wall, the inside of spacing groove (2401) all is provided with stopper (2402), one side of stopper (2402) is spacing spring (2403) of all fixedly connected with, the one end that stopper (2402) were kept away from in spacing spring (2403) all with the lateral wall fixed connection of camera (17).

10. The electrical cabinet with remote monitoring function for electrical engineering of claim 9, wherein: the limiting blocks (2402) and the limiting grooves (2401) are designed in a one-to-one correspondence mode, and the limiting blocks (2402) are clamped with the limiting grooves (2401) in a clamping mode.

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