Illumination type adjustable curtain board maintenance workbench suitable for static contact of high-voltage switch cabinet

Abstract

The invention discloses a high-voltage switch cabinet static contact illumination type adjustable shielding plate maintenance workbench, and belongs to the technical field of high-voltage cabinet maintenance, the high-voltage switch cabinet static contact illumination type adjustable shielding plate maintenance workbench comprises a driving mechanism used for moving, a height adjusting mechanism used for height adjustment is installed on the upper surface of the driving mechanism, and guide plates are installed at the bottoms of the two sides of the height adjusting mechanism; a position adjusting mechanism is installed on the upper surface of the height adjusting mechanism, a protection mechanism used for protection is arranged on the surface of the position adjusting mechanism, and two light supplementing mechanisms are installed in front of the upper surface of the height adjusting mechanism. According to the invention, on the basis of realizing auxiliary maintenance of the high-voltage switch cabinet, the safety of the whole process can be enhanced, and accurate and efficient operation can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-voltage cabinet maintenance, more particularly to a lighting type adjustable shielding plate maintenance workbench for the static contact of a high-voltage switch cabinet. BACKGROUND

[0002] A high-voltage cabinet, also known as a high-voltage switch cabinet, is commonly used in power generation places such as switching stations and power distribution rooms, and refers to an electrical product used in power generation, power transmission, power distribution, and electrical energy conversion in a power system, which plays a role in switching, control, or protection and has a voltage level of 3.6kV-550kV. It is commonly used in power generation places such as switching stations and power distribution rooms, and its main function is to open and close, control, and protect electrical equipment during power generation, power transmission, power distribution, and electrical energy conversion in a power system. There are many classification methods for high-voltage switch cabinets, such as by the installation method of circuit breakers, which can be divided into removable high-voltage switch cabinets and fixed high-voltage switch cabinets.

[0003] Metal armored removable high-voltage switch cabinets have achieved standardized production, but maintenance tools rely on traditional manual operation, which has high personal risk and low efficiency. The existing equipment is not optimized for static contact maintenance scenarios. Currently, metal armored removable high-voltage switch cabinets are widely used in 10kV power distribution equipment in substations.

[0004] During actual operation and maintenance, when performing single-outline interval power-off maintenance work, the upper contact bin is still live, which poses the following problems:

[0005] Opening the upper shielding plate by mistake can cause electric shock and personal injury;

[0006] The movement of personnel in the narrow cabinet body is limited, and two people cannot normally cooperate to open the lower shielding plate for maintenance work, resulting in extremely low efficiency for a single person, and the guardian personnel cannot effectively monitor the workers;

[0007] The light in the cabinet is dim, and ordinary hand lights are blocked by workers, which cannot provide sufficient illumination. SUMMARY

[0008] 1. Technical problem to be solved

[0009] In view of the problems in the prior art, the present application aims to provide a lighting type adjustable shielding plate maintenance workbench for the static contact of a high-voltage switch cabinet. The present application can not only assist in the maintenance of a high-voltage switch cabinet, but also strengthen safety throughout the process, and achieve precise and efficient work.

[0010] 2. Technical solution

[0011] To solve the above problems, the present application adopts the following technical solution:

[0012] An adjustable shielded maintenance workbench with illumination for stationary contacts in high-voltage switchgear includes: a drive mechanism for movement; a height adjustment mechanism for height adjustment mounted on the upper surface of the drive mechanism; guide plates mounted on the bottom of both sides of the height adjustment mechanism; a position adjustment mechanism mounted on the upper surface of the height adjustment mechanism; a protective mechanism for protection on the surface of the position adjustment mechanism; and two supplementary lighting mechanisms mounted in front of the upper surface of the height adjustment mechanism. In a preferred embodiment, the drive mechanism includes a drive base; drive wheels are rotatably connected to both sides of the drive base; rotating wheels are rotatably connected to the surface of the drive base and to both sides of the drive wheels; two first timing gears are fixedly connected to the surface of the drive wheels; and second timing gears are fixedly connected to the surfaces of the two rotating wheels. The two first timing gears and the two second timing gears are rotatably connected via two timing belts.

[0013] As a preferred embodiment of the present invention, a first servo motor is fixedly connected to both sides inside the drive base. A first transmission gear is fixedly connected to the surface of the output shaft of the first servo motor. A second transmission gear is fixedly connected to the surface of the drive wheel. A third transmission gear that meshes with the first transmission gear is rotatably connected to the surface of the drive base. A fourth transmission gear that is compatible with the second transmission gear is fixedly connected to the surface of the third transmission gear.

[0014] In a preferred embodiment of the present invention, the height adjustment mechanism includes a lower mounting frame fixedly connected to the surface of the drive base, an upper mounting frame above the lower mounting frame, and a hinge frame between the lower and upper mounting frames. One end of the hinge frame is rotatably connected to the upper surface of the lower mounting frame and the bottom of the upper mounting frame, respectively. A mounting plate is fixedly connected to one side of the hinge frame, and an electric telescopic rod is rotatably connected to the surface of the mounting plate. The piston rod of the electric telescopic rod is rotatably connected to the other side of the hinge frame. Guide grooves are provided on the inner sides of both the lower and upper mounting frames, and a guide wheel is rotatably connected to the surface of the upper mounting frame, with the guide wheel corresponding to the guide groove.

[0015] In a preferred embodiment of the present invention, the guide plate is fixedly connected to the surface of the lower mounting frame, and a movable groove is provided on the inner side of the guide plate.

[0016] In a preferred embodiment of the present invention, the position adjustment mechanism includes a support housing fixedly connected to the upper surface of the upper mounting frame. Two transmission threaded rods are rotatably connected inside the support housing. A movable frame is threadedly connected to the surface of each transmission threaded rod. Pulleys are fixedly connected to the surfaces of both transmission threaded rods. The two pulleys are rotatably connected via a transmission belt. A second servo motor is fixedly connected to the surface of the support housing, and the output shaft of the second servo motor is fixedly connected to one of the transmission threaded rods.

[0017] In a preferred embodiment of the present invention, the protective mechanism includes a protective seat fixedly connected to the surface of the movable frame. The surface of the protective seat is provided with a connecting groove, and two internally threaded blocks are slidably connected to the surface of the connecting groove. A first protective plate is fixedly connected to the surface of the internally threaded blocks. A second protective plate is fixedly connected to the upper and lower surfaces of the protective seat. A bidirectional lead screw is rotatably connected inside the protective seat, and the two internally threaded blocks are threaded to the surface of the bidirectional lead screw. A third servo motor is fixedly connected to one side of the protective seat, and the output shaft of the third servo motor is fixedly connected to one end of the bidirectional lead screw.

[0018] As a preferred embodiment of the present invention, the supplementary lighting mechanism includes a mounting base fixedly connected to the upper surface of the upper mounting frame, the surface of the mounting base is provided with a gooseneck tube, and a supplementary light is fixedly connected to one end of the outer side of the gooseneck tube.

[0019] 3. Beneficial Effects

[0020] Compared with the prior art, the advantages of this invention are:

[0021] (1) The present invention achieves millisecond-level closure by using a servo motor to drive a bidirectional lead screw through a protective mechanism, thereby improving the coverage. The insulation materials of the first and second protective plates increase the pressure resistance and increase the leakage current, thus eliminating the risk of electric shock. The universal adjustable LED light source of the supplementary lighting mechanism covers the dead corners, and the illuminance of 800 lux is evenly distributed, reducing the error rate.

[0022] (2) The present invention achieves three-dimensional positioning through a drive mechanism, a height adjustment mechanism and a protective mechanism, shortens preparation time, the guide plate and the cabinet guide rail are seamlessly engaged, reducing the offset rate drop, the drive, lifting and protective mechanisms are electrically controlled and linked, supporting one-button operation of mobile positioning protection, improving maintenance efficiency, the first protective plate and the second protective plate increase the opening and closing range, and are compatible with mainstream cabinet types. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of an adjustable shield maintenance workbench with lighting for stationary contacts in high-voltage switchgear, according to the present invention.

[0024] Figure 2This is an unfolded view of the height adjustment mechanism and supplementary lighting mechanism in a high-voltage switchgear static contact illumination adjustable shield maintenance workbench of the present invention.

[0025] Figure 3 This is a cross-sectional view of the drive mechanism in a maintenance workbench with an adjustable shield for lighting the stationary contacts of a high-voltage switchgear, according to the present invention.

[0026] Figure 4 This is a first-view schematic diagram of the position adjustment mechanism and protection mechanism in a maintenance workbench with an adjustable shield for lighting the stationary contacts of a high-voltage switchgear, according to the present invention.

[0027] Figure 5 This is a second-view schematic diagram of the position adjustment mechanism and protective mechanism in a maintenance workbench with an adjustable shield for lighting the stationary contacts of a high-voltage switchgear, according to the present invention.

[0028] Figure 6 This is a first-view schematic diagram of a protective mechanism for a maintenance workbench with an adjustable shield for lighting the stationary contacts of a high-voltage switchgear, according to the present invention.

[0029] Figure 7 This is a second-view schematic diagram of a protective mechanism for a maintenance workbench with an adjustable shield for lighting the stationary contacts of a high-voltage switchgear, according to the present invention.

[0030] Explanation of the labels in the diagram:

[0031] 1. Drive mechanism; 101. Drive base; 102. Drive wheel; 103. Rotating wheel; 104. First timing gear; 105. Second timing gear; 106. Timing belt; 107. First servo motor; 108. First transmission gear; 109. Second transmission gear; 110. Third transmission gear; 111. Fourth transmission gear; 2. Height adjustment mechanism; 201. Lower mounting frame; 202. Upper mounting frame; 203. Hinge frame; 204. Mounting cross plate; 205. Guide groove; 206. Guide wheel; 20 7. Electric telescopic rod; 3. Guide plate; 4. Position adjustment mechanism; 401. Support shell; 402. Transmission threaded rod; 403. Moving frame; 404. Pulley; 405. Transmission belt; 406. Second servo motor; 5. Protective mechanism; 501. Protective seat; 502. Connecting groove; 503. Internal threaded block; 504. First protective plate; 505. Second protective plate; 506. Third servo motor; 507. Bidirectional lead screw; 6. Lighting mechanism; 601. Mounting base; 602. Gooseneck tube; 603. Lighting lamp. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] Example:

[0034] Please see Figures 1-7 An adjustable shield maintenance workbench with lighting for static contacts of high-voltage switchgear includes: a drive mechanism 1 for movement; a height adjustment mechanism 2 for height adjustment installed on the upper surface of the drive mechanism 1; guide plates 3 installed on the bottom of both sides of the height adjustment mechanism 2; a position adjustment mechanism 4 installed on the upper surface of the height adjustment mechanism 2; a protective mechanism 5 for protection on the surface of the position adjustment mechanism 4; and two supplementary lighting mechanisms 6 installed in front of the upper surface of the height adjustment mechanism 2.

[0035] In a specific embodiment of the present invention, the protective mechanism 5 achieves millisecond-level closure by driving the bidirectional lead screw 507 via a servo motor, improving coverage. The insulation materials of the first protective plate 504 and the second protective plate 505 increase the withstand voltage effect and simultaneously increase leakage current, eliminating the risk of electric shock. The universal adjustable LED light source of the supplementary lighting mechanism 6 covers blind spots, with uniform distribution of supplementary lighting, reducing the rate of misoperation. Three-dimensional positioning is achieved through the drive mechanism 1, the height adjustment mechanism 2, and the protective mechanism 5, shortening preparation time. The guide plate 3 seamlessly engages with the cabinet guide rail, reducing the offset rate. The drive, lifting, and protective mechanisms 5 are electrically linked, supporting one-button operation for mobile positioning protection, improving maintenance efficiency. The first protective plate 504 and the second protective plate 505 increase the opening and closing range, adapting to mainstream cabinet types.

[0036] Specifically, the drive mechanism 1 includes a drive base 101. Drive wheels 102 are rotatably connected to both sides of the drive base 101. Rotating wheels 103 are rotatably connected to both sides of the drive base 101 and the drive wheels 102. Two first timing gears 104 are fixedly connected to the surface of the drive wheels 102. Second timing gears 105 are fixedly connected to the surface of the two rotating wheels 103. The two first timing gears 104 and the two second timing gears 105 are rotatably connected via two timing belts 106. A first servo motor 107 is fixedly connected to both sides inside the drive base 101. A first transmission gear 108 is fixedly connected to the surface of the output shaft of the first servo motor 107. A second transmission gear 109 is fixedly connected to the surface of the drive wheels 102. A third transmission gear 110 meshing with the first transmission gear 108 is rotatably connected to the surface of the drive base 101. A fourth transmission gear 111 corresponding to the second transmission gear 109 is fixedly connected to the surface of the third transmission gear 110.

[0037] In a specific embodiment of the present invention, the first servo motor 107 drives the first transmission gear 108 to mesh with the third transmission gear 110, thereby driving the fourth transmission gear 111 to work in conjunction with the second transmission gear 109. The drive wheel 102 rotates the wheel 103 synchronously through the timing belt 106, realizing the coordinated movement of the four wheels. The dual-motor four-wheel drive enhances the obstacle crossing ability, and the timing belt 106 transmission eliminates slippage and improves the stability of movement.

[0038] Specifically, the height adjustment mechanism 2 includes a lower mounting frame 201 fixedly connected to the surface of the drive base 101, an upper mounting frame 202 above the lower mounting frame 201, and a hinge frame 203 between the lower mounting frame 201 and the upper mounting frame 202. One end of the hinge frame 203 is rotatably connected to the upper surface of the lower mounting frame 201 and the bottom of the upper mounting frame 202, respectively. A mounting plate 204 is fixedly connected to one side of the hinge frame 203. An electric telescopic rod 207 is rotatably connected to the surface of the mounting plate 204, and the piston rod of the electric telescopic rod 207 is rotatably connected to the other side of the hinge frame 203. Guide grooves 205 are provided on the inner sides of both the lower mounting frame 201 and the upper mounting frame 202. A guide wheel 206 is rotatably connected to the surface of the upper mounting frame 202, and the guide wheel 206 is adapted to the guide groove 205.

[0039] In a specific embodiment of the present invention, the electric telescopic rod 207 pushes the hinge frame 203, which in turn drives the upper mounting frame 202 to rise and fall along the guide groove 205. The guide wheel 206 constrains the lifting trajectory to avoid skewness, thereby increasing the lifting range of the height adjustment mechanism 2 and adapting to different cabinet heights. The guide wheel 206 and the groove structure reduce mechanical vibration and improve stability.

[0040] Specifically, the guide plate 3 is fixedly connected to the surface of the lower mounting frame 201, and a moving groove is provided on the inner side of the guide plate 3.

[0041] In a specific embodiment of the present invention, the moving groove of the guide plate 3 engages with the switch cabinet guide rail to restrict the lateral displacement of the workbench. When the hinge frame 203 retracts, the guide wheel 206 slides along the groove to ensure that vertical lifting is unimpeded, avoid equipment deviation during maintenance, and quickly position to shorten preparation time.

[0042] Specifically, the position adjustment mechanism 4 includes a support housing 401 fixedly connected to the upper surface of the upper mounting frame 202. Two transmission threaded rods 402 are rotatably connected inside the support housing 401. A movable frame 403 is threadedly connected to the surface of the transmission threaded rods 402. Pulleys 404 are fixedly connected to the surfaces of the two transmission threaded rods 402. The two pulleys 404 are rotatably connected through a transmission belt 405. A second servo motor 406 is fixedly connected to the surface of the support housing 401, and the output shaft of the second servo motor 406 is fixedly connected to one of the transmission threaded rods 402.

[0043] In a specific embodiment of the present invention, the second servo motor 406 drives the transmission threaded rod 402, and the two transmission threaded rods 402 rotate synchronously through the pulley 404 and the transmission belt 405, thereby driving the moving frame 403 to move horizontally, which increases the horizontal positioning accuracy. The synchronous backlash elimination design of the two transmission threaded rods 402 eliminates mechanical backlash, which is suitable for precise alignment in narrow spaces.

[0044] Specifically, the protective mechanism 5 includes a protective seat 501 fixedly connected to the surface of the movable frame 403. The surface of the protective seat 501 is provided with a connecting groove 502. Two internal threaded blocks 503 are slidably connected to the surface of the connecting groove 502. A first protective plate 504 is fixedly connected to the surface of the internal threaded blocks 503. A second protective plate 505 is fixedly connected to the upper and lower surfaces of the protective seat 501. A bidirectional lead screw 507 is rotatably connected inside the protective seat 501, and the two internal threaded blocks 503 are threaded to the surface of the bidirectional lead screw 507. A third servo motor 506 is fixedly connected to one side of the protective seat 501, and the output shaft of the third servo motor 506 is fixedly connected to one end of the bidirectional lead screw 507.

[0045] In a specific embodiment of the present invention, the third servo motor 506 drives the bidirectional lead screw 507 to rotate, causing the internal thread block 503 to slide in the opposite direction in the connecting groove 502, thereby driving the first protective plate 504 to open and close, and the second protective plate 505 to fix and cover the upper and lower stationary contacts, reducing the closing response time of the first protective plate 504 and the second protective plate 505. The first protective plate 504 and the second protective plate 505 are made of insulating resin material to block the electric arc, reducing the electric shock accident rate to zero.

[0046] Specifically, the supplementary lighting mechanism 6 includes a mounting base 601 fixedly connected to the upper surface of the upper mounting frame 202. The surface of the mounting base 601 is provided with a gooseneck tube 602, and a supplementary light 603 is fixedly connected to one end of the outer side of the gooseneck tube 602.

[0047] In a specific embodiment of the present invention, the mounting base 601 is fixed to the upper mounting frame 202, the gooseneck tube 602 adjusts the angle of the supplementary light 603, and the LED light source focuses on illuminating the static contact area to improve local illumination and eliminate shadows.

[0048] A method for using an adjustable shielded maintenance workbench with lighting for stationary contacts in high-voltage switchgear includes the following steps:

[0049] The four-wheel system of drive mechanism 1 is synchronously driven by timing belt 106, and moves smoothly along the switch cabinet guide rail to the maintenance position. The moving groove of guide plate 3 precisely engages with the cabinet guide rail, locking the lateral degree of freedom. The electric telescopic rod 207 of height adjustment mechanism 2 pushes the hinge frame 203, driving the upper mounting frame 202 to rise and fall along the guide groove 205 to the height of the stationary contact. The guide wheel 206 constrains the vertical trajectory. The second servo motor 406 of position adjustment mechanism 4 drives two transmission threaded rods 402, which move synchronously on both axes through transmission belt 405, causing the moving frame 403 to be horizontally displaced to the front of the stationary contact. The third servo motor of protection mechanism 5... When the servo motor 506 starts, it drives the bidirectional lead screw 507 to rotate. The internal thread block 503 slides in the opposite direction in the connecting groove 502, causing the first protective plate 504 to close and cover the live static contact. At the same time, the second protective plate 505 fixes and shields the upper and lower contacts, forming a fully enclosed insulation barrier. The gooseneck tube 602 of the supplementary lighting mechanism 6 adjusts the angle of the supplementary light 603, and the LED light source shines directly on the operating area to eliminate shadows inside the cabinet. The operator can fine-tune the moving frame 403 through the position adjustment mechanism 4 to align the tool with the non-live area. With the first protective plate 504 and the second protective plate 505 closed, the baffle bolts can be safely removed or the contacts can be replaced.

[0050] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A maintenance workbench with an adjustable shield for illuminating the stationary contacts of high-voltage switchgear, characterized in that, include: The driving mechanism (1) for movement is equipped with a height adjustment mechanism (2) for height adjustment on the upper surface of the driving mechanism (1). Guide plates (3) are installed on the bottom of both sides of the height adjustment mechanism (2). A position adjustment mechanism (4) is installed on the upper surface of the height adjustment mechanism (2). A protective mechanism (5) for protection is provided on the surface of the position adjustment mechanism (4). Two supplementary lighting mechanisms (6) are installed in front of the upper surface of the height adjustment mechanism (2).

2. The adjustable shield maintenance workbench with lighting for stationary contacts in high-voltage switchgear, as described in claim 1, is characterized in that... The drive mechanism (1) includes a drive base (101), on both sides of the drive base (101) are rotatably connected to drive wheels (102), and on both sides of the drive base (101) are rotating wheels (103). Two first timing gears (104) are fixedly connected to the surface of the drive wheel (102), and two second timing gears (105) are fixedly connected to the surface of the two rotating wheels (103). The two first timing gears (104) and the two second timing gears (105) are rotatably connected by two timing belts (106).

3. The adjustable shield maintenance workbench with lighting for stationary contacts in high-voltage switchgear, as described in claim 2, is characterized in that... The drive base (101) has a first servo motor (107) fixedly connected to both sides inside. The output shaft of the first servo motor (107) is fixedly connected to a first transmission gear (108). The drive wheel (102) is fixedly connected to a second transmission gear (109). The drive base (101) is rotatably connected to a third transmission gear (110) that meshes with the first transmission gear (108). The surface of the third transmission gear (110) is fixedly connected to a fourth transmission gear (111) that is compatible with the second transmission gear (109).

4. A maintenance workbench with adjustable shielding for lighting the stationary contacts of high-voltage switchgear, as described in claim 3, is characterized in that... The height adjustment mechanism (2) includes a lower mounting frame (201) fixedly connected to the surface of the drive base (101). An upper mounting frame (202) is provided above the lower mounting frame (201). A hinge frame (203) is provided between the lower mounting frame (201) and the upper mounting frame (202). One end of the upper and lower sides of the hinge frame (203) is rotatably connected to the upper surface of the lower mounting frame (201) and the bottom of the upper mounting frame (202), respectively. The surface of one side of the hinge frame (203) is... A mounting plate (204) is fixedly connected to the surface of the mounting plate (204), and an electric telescopic rod (207) is rotatably connected to the surface of the mounting plate (204). The piston rod of the electric telescopic rod (207) is rotatably connected to the other side of the hinge frame (203). Guide grooves (205) are provided on the inner sides of the lower mounting frame (201) and the upper mounting frame (202). A guide wheel (206) is rotatably connected to the surface of the upper mounting frame (202), and the guide wheel (206) is adapted to the guide groove (205).

5. A maintenance workbench with adjustable shielding for lighting the stationary contacts of high-voltage switchgear, as described in claim 4, is characterized in that... The guide plate (3) is fixedly connected to the surface of the lower mounting frame (201), and a moving groove is provided on the inner side of the guide plate (3).

6. A maintenance workbench with adjustable shielding for lighting the stationary contacts of high-voltage switchgear, as described in claim 5, is characterized in that... The position adjustment mechanism (4) includes a support housing (401) fixedly connected to the upper surface of the upper mounting frame (202). The support housing (401) has two drive threaded rods (402) rotatably connected inside. The surface of the drive threaded rods (402) is threadedly connected to a movable frame (403). The surfaces of the two drive threaded rods (402) are fixedly connected to pulleys (404). The two pulleys (404) are rotatably connected through a drive belt (405). The surface of the support housing (401) is fixedly connected to a second servo motor (406), and the output shaft of the second servo motor (406) is fixedly connected to one of the drive threaded rods (402).

7. A maintenance workbench with adjustable shielding for lighting the stationary contacts of high-voltage switchgear, as described in claim 6, is characterized in that... The protective mechanism (5) includes a protective seat (501) fixedly connected to the surface of the movable frame (403). The surface of the protective seat (501) is provided with a connecting groove (502). Two internal threaded blocks (503) are slidably connected to the surface of the connecting groove (502). A first protective plate (504) is fixedly connected to the surface of the internal threaded blocks (503). A second protective plate (505) is fixedly connected to the upper and lower surfaces of the protective seat (501). A bidirectional lead screw (507) is rotatably connected inside the protective seat (501). The two internal threaded blocks (503) are threaded to the surface of the bidirectional lead screw (507). A third servo motor (506) is fixedly connected to one side of the protective seat (501). The output shaft of the third servo motor (506) is fixedly connected to one end of the bidirectional lead screw (507).

8. A maintenance workbench with adjustable shielding for lighting the stationary contacts of high-voltage switchgear, as described in claim 7, is characterized in that... The supplementary lighting mechanism (6) includes a mounting base (601) fixedly connected to the upper surface of the upper mounting frame (202). The surface of the mounting base (601) is provided with a gooseneck tube (602), and a supplementary light (603) is fixedly connected to one end of the outer side of the gooseneck tube (602).

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