Outdoor rainproof charging pile

Abstract

The invention discloses an outdoor rainproof charging pile, and relates to the technical field of charging piles, the outdoor rainproof charging pile comprises a charging pile body, the bottom surface of the charging pile body is fixedly connected with a supporting column, the bottom end of the supporting column is fixedly connected with a chassis, the chassis is provided with a plurality of groups of mounting holes, and the surface of the charging pile body is fixedly provided with a control panel. The charging pile comprises a charging pile body, storage racks are fixedly connected to the two sides of the charging pile body, storage grooves are formed in the storage racks, a top plate is fixedly connected to the top end of the charging pile body, a cable is fixedly connected to the charging pile body, and a charging head is fixedly installed at the other end of the cable and inserted into a plug. The charging pile is reasonable in structure, rainwater cannot enter the interior of the charging pile body through the waterproof cloth by opening the waterproof cloth on the shielding assembly, the situation that overall use of the charging pile body is affected is avoided, and the cable can be wound conveniently through the limiting assembly and the adjusting assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to an outdoor rainproof charging pile. Background Art

[0002] Charging piles are mainly divided into floor-standing charging piles and wall-mounted charging piles. They mainly adopt the charging method of time, electricity meter and amount meter. Charging piles can be fixed on the ground or wall and installed in public buildings (public buildings, shopping malls, public parking lots, etc.) and residential parking lots or charging stations. They can charge various types of electric vehicles according to different voltage levels. The input end of the charging pile is directly connected to the AC power grid, and the output end is equipped with a charging plug for charging electric vehicles.

[0003] Most of the existing charging piles are installed outdoors. When encountering windy and rainy weather, rain will flow into the charging piles, which will easily affect the later use of the charging piles. In addition, the charging piles are equipped with wires. After some charging is completed, the cables placed on the charging piles are prone to become untied and tangled, thus affecting the later user experience. Summary of the invention

[0004] The purpose of the present application is to provide an outdoor rainproof charging pile, which can be opened by the tarpaulin on the shielding component. Rainwater cannot enter the interior of the charging pile body through the tarpaulin, thereby avoiding affecting the overall use of the charging pile body. The cable can be easily reeled in by means of a limit component and an adjustment component.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an outdoor rainproof charging pile, comprising a charging pile body, a support column fixedly connected to the bottom surface of the charging pile body, a bottom end of the support column fixedly connected to a chassis, a plurality of groups of mounting holes are provided on the chassis, a control panel is fixedly installed on the surface of the charging pile body, racks are fixedly connected to both sides of the charging pile body, a placement slot is provided on the racks, a top plate is fixedly connected to the top of the charging pile body, a cable is fixedly connected to the charging pile body, a charging head is fixedly installed on the other end of the cable, the charging head is inserted into a plug, and the plug is fixedly installed on the bottom surface of the charging pile body; further comprising a shielding component, a limiting component and an adjusting component, the shielding component is arranged at the top position of the top plate for rainproofing the entire charging pile body, the limiting component is arranged on the surface of the support column for storing the cable, the adjusting component is arranged on the rear side of the support column for cooperating with the limiting component for use on both sides of the box, and the stirring component is arranged on the stirring component for use.

[0006] Preferably, the shielding assembly includes a pair of fixing seats fixedly mounted on the top surface of the top plate, a pair of fixing seats being rotatably connected to a rotating rod, both ends of the rotating rod are fixedly connected to a wall panel, the other end of the wall panel is rotatably connected to a rotating shaft, a positioning plate is fixedly connected to the rotating shaft, a docking plate is rotatably connected to the positioning plate, a first spring is sleeved on the rotating shaft, and both ends of the first spring are respectively fixedly connected to the inner side of the positioning plate and the inner side of the docking plate.

[0007] Preferably, a winding roller is fixedly connected to the docking disk, a tarpaulin is provided on the winding roller, a baffle is fitted in the middle of the tarpaulin, a baffle plate is fixedly connected to one end of the baffle, the other end of the baffle is fixedly connected to a support plate, the bottom end of the support plate is fixedly connected to a fixing rod, the other end of the fixing rod is fixedly connected to a first axle seat, and the first axle seat is fixedly mounted on the top surface of the top plate.

[0008] Preferably, one of the rotating rods is fixedly connected to a first pulley, the first pulley is sleeved with a transmission belt, the other end of the transmission belt is sleeved on a second pulley, the second pulley is fixedly connected to a driving rod, the driving rod is rotatably connected to a second shaft seat, the bottom end of the second shaft seat is fixedly connected to the top plate, one end of the driving rod is fixedly connected to an adjusting head, the driving rod is fixedly connected to a first toothed disc, the first toothed disc is meshed with a second toothed disc, and the second toothed disc is fixedly connected to the rotating rod.

[0009] Preferably, the limiting assembly includes a storage plate fixedly mounted on the surface of the support column, a guide rail is fixedly connected to the middle position of the storage plate, a pair of sliders are slidably connected to the guide rail, a disc is fixedly connected to the storage plate, an L-shaped column is fixedly connected to the middle position of the disc, and a sliding shaft is rotatably connected to the L-shaped column.

[0010] Preferably, a main shaft is rotatably connected to the middle of the storage plate, one end of the main shaft is fixedly connected to a first clamping ring, an outer surface of the first clamping ring is symmetrically fixedly connected to a docking plate, and the other end of the docking plate is fixedly connected to a second clamping ring.

[0011] Preferably, an axle pin is fixedly connected to the second clamping ring, a bottom end of the axle pin is rotatably connected to a linkage plate, and the other end of the linkage plate is rotatably connected to the slider.

[0012] Preferably, the other end of the main shaft extends to the rear side of the support column through the storage plate, the other end of the main shaft is fixedly connected to a limit plate, a plurality of groups of slots are provided on the limit plate, and the other end of the sliding shaft is fixedly connected to a handle.

[0013] Preferably, the adjustment assembly includes a side plate fixedly mounted on the rear side of the support column, a bracket fixedly connected to the side plate, a limiting rod fixedly connected to both ends of the bracket, a ring fixedly connected to the other end of the limiting rod, a sliding seat slidably connected to the limiting rod, a retaining ring fixedly connected to one side of the sliding seat, a second spring sleeved on the limiting rod, and two ends of the second spring are respectively fixedly connected to one side of the bracket and one side of the retaining ring.

[0014] Preferably, the sliding seat is fixedly connected to the adjusting block, one side of the adjusting block is fixedly connected to a docking seat, the docking seat is fixedly connected to a pulling column, the other side of the adjusting block is fixedly connected to a limiting block, an arc groove is provided on the limiting block, the inner wall of the arc groove is fixedly connected to a latch tooth, and the latch tooth is clamped inside the latch groove.

[0015] In summary, the present invention has the following beneficial effects:

[0016] 1. The structure of the present invention is reasonable. When the awning is opened, the adjusting head is rotated, the adjusting head is fixedly connected to the driving rod, and the driving rod is rotated by the rotation of the adjusting head. The driving rod is fixedly connected with a first toothed disc, and the first toothed disc is rotated by the rotation of the driving rod. The first toothed disc and the second toothed disc are meshed with each other, and the rotating rod on the second toothed disc is rotated by the rotation of the first toothed disc. The driving rod is fixedly connected with a second pulley, and the rotation of the second pulley drives the rotating rod on the first pulley to rotate through the transmission belt, so that the wall panels at both ends of the rotating rod pull the rotating shaft, so that the awning on the winding roller is opened.

[0017] 2. In the present invention, the cable is wound around the sliding shaft surface on the L-shaped column, and then the handle is rotated to drive the main shaft to rotate. The rotation of the main shaft causes the first clamping ring to rotate, and the rotation of the first clamping ring drives the second clamping ring to rotate through the docking plate, so that the shaft pin on the second clamping ring is easy to move. The shaft pin is rotatably connected with a linkage plate, and the other end of the linkage plate is rotatably connected to the slider. The movement of the shaft pin pushes the slider to slide on the guide rail through the linkage plate, so that the sliding shaft is easy to tighten the cable and avoid the cable from being loose.

[0018] 3. In the present invention, when the main shaft is rotated, the pulling column is first pulled. The pulling of the pulling column causes the adjusting block on the docking seat to move. The movement of the adjusting block causes the slide seat to slide on the limiting rod, thereby facilitating the squeezing of the second spring. One side of the adjusting block is fixedly connected to the limiting block, and an arc groove is provided on the limiting block. The locking teeth inside the arc groove are clamped inside the locking groove. The movement of the adjusting block facilitates the locking teeth to disengage from the locking groove, thereby facilitating the rotation of the main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the charging pile body;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the charging pile body from the rear;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the charging pile body when viewed from above;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the shielding component;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the cross section of the winding roller;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the storage plate;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the adjustment component;

[0027] Figure 8 for Figure 7 Enlarged structural diagram at A in the middle.

[0028] In the figure: 1. Charging pile body; 101. Support column; 102. Chassis; 103. Mounting hole; 104. Control panel; 105. Storage rack; 106. Placement slot; 107. Top plate; 108. Cable; 109. Charging head; 110. Plug; 2. Fixed seat; 201. Rotating rod; 202. Wall plate; 203. Rotating shaft; 204. Positioning plate; 205. Docking plate; 206. First spring; 207. Winding roller; 208. Rain cloth; 209. Baffle rod; 210. Baffle plate; 211. Support plate; 212. Fixed rod; 213. First shaft seat; 3. First pulley; 301. Transmission belt; 302. Second pulley; 303. Driving rod; 304. Second shaft 1. seat; 305. adjusting head; 306. first toothed disc; 307. second toothed disc; 4. storage plate; 401. guide rail; 402. slider; 403. disc; 404. L-shaped column; 405. sliding shaft; 406. main shaft; 407. first retaining ring; 408. docking plate; 409. second retaining ring; 410. axle pin; 411. linkage plate; 412. limit plate; 413. slot; 414. turning handle; 5. side plate; 501. bracket; 502. limit rod; 503. sleeve ring; 504. sliding seat; 505. retaining ring; 506. second spring; 507. adjusting block; 508. docking seat; 509. pulling column; 510. limit block; 511. arc groove; 512. slot. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example: Reference Figure 1 - Figure 8The outdoor rainproof charging pile shown in the figure includes a charging pile body 1, a support column 101 is fixedly connected to the bottom surface of the charging pile body 1, a bottom end of the support column 101 is fixedly connected to a chassis 102, a plurality of groups of mounting holes 103 are provided on the chassis 102, a control panel 104 is fixedly installed on the surface of the charging pile body 1, racks 105 are fixedly connected to both sides of the charging pile body 1, a placement groove 106 is provided on the racks 105, a top plate 107 is fixedly connected to the top of the charging pile body 1, a cable 108 is fixedly connected to the charging pile body 1, and the other end of the cable 108 is fixedly connected to the charging pile body 1. A charging head 109 is fixedly installed, and the charging head 109 is inserted into the plug 110, and the plug 110 is fixedly installed on the bottom surface of the charging pile body 1; it also includes a shielding component, a limiting component and an adjusting component. The shielding component is arranged at the top position of the top plate 107 to protect the charging pile body 1 as a whole from rain, the limiting component is arranged on the surface of the support column 101 to store the cable 108, the adjusting component is arranged on the rear side of the support column 101 to cooperate with the limiting component for use on both sides of the box, and the stirring component is arranged on the stirring component for use.

[0031] Specifically, it should be noted that the control panel 104 and the charging pile body 1 are electrically connected through wires, and the specific working principles therebetween are referenced through existing technologies and will not be elaborated on here. The charging work is completed by removing the charging head 109 and inserting it into the charging port of the tram.

[0032] As an implementation method in this embodiment, the shielding assembly includes a pair of fixed seats 2 fixedly installed on the top surface of the top plate 107, a pair of fixed seats 2 are rotatably connected with a rotating rod 201, both ends of the rotating rod 201 are fixedly connected with a wall panel 202, the other end of the wall panel 202 is rotatably connected to a rotating shaft 203, a positioning disk 204 is fixedly connected to the rotating shaft 203, a docking disk 205 is rotatably connected to the positioning disk 204, a first spring 206 is sleeved on the rotating shaft 203, the two ends of the first spring 206 are respectively fixedly connected to the inner side of the positioning disk 204 and the inner side of the docking disk 205, a winding roller 207 is fixedly connected to the docking disk 205, a tarpaulin 208 is provided on the winding roller 207, a blocking rod 209 is attached to the middle position of the tarpaulin 208, one end of the blocking rod 209 is fixedly connected to a blocking sheet 210, and the other end of the blocking rod 209 is fixedly connected to the support On the support plate 211, the bottom end of the support plate 211 is fixedly connected to the fixing rod 212, the other end of the fixing rod 212 is fixedly connected to the first shaft seat 213, the first shaft seat 213 is fixedly installed on the top surface of the top plate 107, one of the rotating rods 201 is fixedly connected to the first pulley 3, the first pulley 3 is sleeved with a transmission belt 301, the other end of the transmission belt 301 is sleeved on the second pulley 302, the second pulley 302 is fixedly connected to the driving rod 303, the driving rod 303 is rotatably connected to the second shaft seat 304, the bottom end of the second shaft seat 304 is fixedly connected to the top plate 107, one end of the driving rod 303 is fixedly connected to the adjusting head 305, the driving rod 303 is fixedly connected to the first toothed disc 306, the first toothed disc 306 is meshed with the second toothed disc 307, and the second toothed disc 307 is fixedly connected to the rotating rod 201.

[0033] Specifically, when the tarpaulin 208 is opened, the adjusting head 305 is rotated, and the adjusting head 305 is fixedly connected to the driving rod 303. The driving rod 303 is rotated by rotating the adjusting head 305. The driving rod 303 is fixedly connected with a first toothed disc 306, and the first toothed disc 306 is rotated by rotating the driving rod 303. The first toothed disc 306 and the second toothed disc 307 are meshed with each other. The rotation of the first toothed disc 306 rotates the rotating rod 201 on the second toothed disc 307, and the driving rod 303 is fixedly connected with a second pulley 302. The rotation of the second pulley 302 drives the rotating rod 201 on the first pulley 3 to rotate through the transmission belt 301, so that the wall panels 202 at both ends of the rotating rod 201 pull the rotating shaft 203, so that the tarpaulin 208 on the winding roller 207 is opened.

[0034] As an implementation method in this embodiment, the limiting component includes a storage plate 4 fixedly installed on the surface of the support column 101, a guide rail 401 is fixedly connected to the middle position of the storage plate 4, a pair of sliders 402 are slidably connected to the guide rail 401, a disk 403 is fixedly connected to the storage plate 4, an L-shaped column 404 is fixedly connected to the middle position of the disk 403, a sliding shaft 405 is rotatably connected to the L-shaped column 404, a main shaft 406 is rotatably connected to the middle position of the storage plate 4, one end of the main shaft 406 is fixedly connected to a first retaining ring 407, and the outer surface of the first retaining ring 407 A docking plate 408 is symmetrically fixedly connected, and the other end of the docking plate 408 is fixedly connected to a second retaining ring 409, and an axle pin 410 is fixedly connected to the second retaining ring 409. The bottom end of the axle pin 410 is rotatably connected to a linkage plate 411, and the other end of the linkage plate 411 is rotatably connected to the slider 402. The other end of the main shaft 406 extends to the rear side of the support column 101 through the storage plate 4, and the other end of the main shaft 406 is fixedly connected to a limit plate 412, and a plurality of groups of slots 413 are provided on the limit plate 412. The other end of the sliding shaft 405 is fixedly connected to a turning handle 414.

[0035] Specifically, the cable 108 is wound around the surface of the sliding shaft 405 on the L-shaped column 404, and then the handle 414 is rotated to drive the main shaft 406 to rotate. The rotation of the main shaft 406 causes the first retaining ring 407 to rotate. The rotation of the first retaining ring 407 drives the second retaining ring 409 to rotate through the docking plate 408, thereby facilitating the movement of the axle pin 410 on the second retaining ring 409. The axle pin 410 is rotatably connected to a linkage plate 411, and the other end of the linkage plate 411 is rotatably connected to the slider 402. The movement of the axle pin 410 pushes the slider 402 to slide on the guide rail 401 through the linkage plate 411, thereby facilitating the sliding shaft 405 to tighten the cable 108 and prevent the cable 108 from becoming loose.

[0036] As an implementation method in this embodiment, the adjustment component includes a side plate 5 fixedly installed on the rear side of the support column 101, a bracket 501 is fixedly connected to the side plate 5, both ends of the bracket 501 are fixedly connected to the limit rod 502, the other end of the limit rod 502 is fixedly connected to the ring 503, the limit rod 502 is slidably connected to the slide seat 504, one side of the slide seat 504 is fixedly connected to the retaining ring 505, the limit rod 502 is sleeved with a second spring 506, both ends of the second spring 506 The slide seat 504 is fixedly connected to the adjusting block 507, one side of the adjusting block 507 is fixedly connected to the docking seat 508, the docking seat 508 is fixedly connected to the pulling column 509, the other side of the adjusting block 507 is fixedly connected to the limiting block 510, the limiting block 510 is provided with an arc groove 511, the inner wall of the arc groove 511 is fixedly connected with a latch tooth 512, and the latch tooth 512 is clamped inside the latch groove 413.

[0037] Specifically, when the main shaft 406 is rotated, the pulling column 509 is first pulled, and the pulling of the pulling column 509 causes the adjusting block 507 on the docking seat 508 to move. The movement of the adjusting block 507 causes the slide seat 504 to slide on the limiting rod 502, thereby facilitating the squeezing of the second spring 506. One side of the adjusting block 507 is fixedly connected to the limiting block 510, and an arc groove 511 is provided on the limiting block 510. The locking tooth 512 inside the arc groove 511 is clamped in the inside of the locking groove 413. The movement of the adjusting block 507 facilitates the locking tooth 512 to disengage from the locking groove 413, thereby facilitating the rotation of the main shaft 406.

[0038] The working principle of the present invention is as follows: when the tarpaulin 208 is opened, the adjusting head 305 is rotated, the adjusting head 305 is fixedly connected to the driving rod 303, and the driving rod 303 is rotated by the rotation of the adjusting head 305. The driving rod 303 is fixedly connected with a first toothed disc 306, and the first toothed disc 306 is rotated by the rotation of the driving rod 303. The first toothed disc 306 and the second toothed disc 307 are meshed with each other, and the rotating rod 201 on the second toothed disc 307 is rotated by the rotation of the first toothed disc 306, and the driving rod 303 is fixedly connected with a second pulley 302, and the rotation of the second pulley 302 drives the rotating rod 201 on the first pulley 3 to rotate through the transmission belt 301, so that the wall panels 202 at both ends of the rotating rod 201 pull the rotating shaft 203, so that the tarpaulin 208 on the winding roller 207 is opened;

[0039] The cable 108 is wound around the surface of the sliding shaft 405 on the L-shaped column 404, and then the turning handle 414 is rotated to drive the main shaft 406 to rotate. The rotation of the main shaft 406 causes the first clamping ring 407 to rotate. The rotation of the first clamping ring 407 drives the second clamping ring 409 to rotate through the docking plate 408, so that the shaft pin 410 on the second clamping ring 409 can move. The shaft pin 410 is rotatably connected with a linkage plate 411, and the other end of the linkage plate 411 is rotatably connected to the slider 402. The movement of the shaft pin 410 pushes the slider 402 to slide on the guide rail 401 through the linkage plate 411, so that the sliding shaft 405 can tighten the cable 108 to prevent the cable 108 from becoming loose.

[0040] When the main shaft 406 is rotated, the pulling column 509 is first pulled. The pulling of the pulling column 509 causes the adjusting block 507 on the docking seat 508 to move. The movement of the adjusting block 507 causes the slide seat 504 to slide on the limiting rod 502, thereby facilitating the squeezing of the second spring 506. One side of the adjusting block 507 is fixedly connected to the limiting block 510, and an arc groove 511 is provided on the limiting block 510. The locking tooth 512 inside the arc groove 511 is clamped in the inside of the locking groove 413. The movement of the adjusting block 507 facilitates the locking tooth 512 to disengage from the locking groove 413, thereby facilitating the rotation of the main shaft 406.

[0041] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An outdoor rainproof charging pile, comprising a charging pile body (1), characterized in that: The bottom surface of the charging pile body (1) is fixedly connected to a support column (101), the bottom end of the support column (101) is fixedly connected to a chassis (102), the chassis (102) is provided with a plurality of mounting holes (103), the surface of the charging pile body (1) is fixedly installed with a control panel (104), the two sides of the charging pile body (1) are fixedly connected to storage racks (105), the storage racks (105) are provided with placement grooves (106), the top of the charging pile body (1) is fixedly connected to a top plate (107), the charging pile body (1) is fixedly connected to a cable (108), the other end of the cable (108) is fixedly installed with a charging head (109), the charging head (109) is inserted into a plug (110), and the plug (110) is fixedly installed at the bottom surface of the charging pile body (1).

2. An outdoor rainproof charging pile according to claim 1, characterized in that: It also includes a shielding component, a limiting component and an adjusting component. The shielding component is arranged at the top position of the top plate (107) to protect the entire charging pile body (1) from rain. The limiting component is arranged on the surface of the support column (101) to store the cable (108). The adjusting component is arranged on the rear side of the support column (101) to cooperate with the limiting component.

3. An outdoor rainproof charging pile according to claim 2, characterized in that: The shielding assembly comprises a pair of fixing seats (2) fixedly mounted on the top surface of the top plate (107); a rotating rod (201) is rotatably connected to the pair of fixing seats (2); both ends of the rotating rod (201) are fixedly connected to wall plates (202); the other end of the wall plate (202) is rotatably connected to a rotating shaft (203); a positioning plate (204) is fixedly connected to the rotating shaft (203); a docking plate (205) is rotatably connected to the positioning plate (204); a first spring (206) is sleeved on the rotating shaft (203); and both ends of the first spring (206) are respectively fixedly connected to the inner side of the positioning plate (204) and the inner side of the docking plate (205).

4. The outdoor rainproof charging pile according to claim 3, characterized in that: A winding roller (207) is fixedly connected to the docking plate (205), a tarpaulin (208) is provided on the winding roller (207), a blocking rod (209) is fitted in the middle of the tarpaulin (208), one end of the blocking rod (209) is fixedly connected to a blocking sheet (210), the other end of the blocking rod (209) is fixedly connected to a support plate (211), the bottom end of the support plate (211) is fixedly connected to a fixing rod (212), the other end of the fixing rod (212) is fixedly connected to a first shaft seat (213), and the first shaft seat (213) is fixedly mounted on the top surface of the top plate (107).

5. An outdoor rainproof charging pile according to claim 4, characterized in that: One of the rotating rods (201) is fixedly connected to a first pulley (3), a transmission belt (301) is sleeved on the first pulley (3), the other end of the transmission belt (301) is sleeved on a second pulley (302), the second pulley (302) is fixedly connected to a driving rod (303), the driving rod (303) is rotatably connected to a second shaft seat (304), the bottom end of the second shaft seat (304) is fixedly connected to the top plate (107), one end of the driving rod (303) is fixedly connected to an adjusting head (305), the driving rod (303) is fixedly connected to a first toothed disc (306), the first toothed disc (306) is meshed with a second toothed disc (307), and the second toothed disc (307) is fixedly connected to the rotating rod (201).

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