CN113395853B - Adjustable waterproof supporting base for user outside assembly of communication cabinet - Google Patents

Abstract

The invention discloses an adjustable waterproof supporting base assembled outside a communication cabinet user, which belongs to the technical field of communication cabinets and comprises an adjusting base, a lifting slider, a rotary rod, a limiting slider, a limiting column, a lifting cylinder barrel and a fixed column, wherein a threaded rod for driving the lifting slider to vertically slide penetrates through the inner wall of the adjusting base, and a lifting pore plate for driving the rotary rod to swing in a reciprocating manner is fixedly connected to the side wall of the lifting slider.

Description

Adjustable waterproof supporting base for user outside assembly of communication cabinet

Technical Field

The invention relates to the technical field of communication cabinets, in particular to an adjustable waterproof supporting base assembled outside a user of a communication cabinet.

Background

The outdoor communication cabinet is one of outdoor cabinets, is a cabinet body which is directly under the influence of natural climate and is made of metal or nonmetal materials, does not allow an unauthorized operator to enter the cabinet body for operation, provides an outdoor physical working environment and a safety system for a wireless communication station or a wired network station workstation, and needs to be installed on a supporting base when the communication cabinet is installed outdoors.

Through retrieval, chinese patent publication No. CN109451693A, specifically, a height-adjustable heat dissipation type communication cabinet, which includes a base, a fixing base and an electric hydraulic telescopic rod are disposed on the top of the base, the fixing base is hinged to a first supporting rod, a supporting plate is disposed on the top of the first supporting rod, a communication cabinet is disposed on the top of the supporting plate, a sleeve, a placing plate, a fixing rod, a lifting rod, a slider is sleeved on the fixing rod, a heat dissipation fan is fixedly connected to the slider, a rotating motor is disposed on the left side of the communication cabinet, a gear is sleeved on the rotating motor, a first fixing block is fixedly connected to the gear, an L-shaped hinge rod is hinged to the first fixing block, an illuminating lamp is disposed on the top of the lifting rod, a second supporting rod and a solar battery are disposed on the top of the communication cabinet, a rain shield is disposed on the top of the second supporting rod, and a solar panel is disposed on the top of the rain shield.

In the heat dissipation type communication cabinet with adjustable height of above-mentioned patent, when in-service use, the existence can't install the operation to the inclined road surface, can't install the cabinet body of different specifications, and the fixed unstable problem of installation leads to the communication cabinet to install unstably in the open air, can not satisfy people's demand, for this we provide a communication cabinet user external assembly adjustable waterproof supporting base.

Disclosure of Invention

The invention aims to provide an adjustable waterproof supporting base for the user outside of a communication cabinet, which aims to solve the problems that the installation operation on an inclined road surface cannot be carried out, cabinets with different specifications cannot be installed, and the installation and fixation are unstable in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a waterproof support base with adjustable communication cabinet user's external assembly, is including adjusting base, lifting slide, rotary rod, spacing slider, spacing post, lift cylinder and fixed column, the inner wall of adjusting the base runs through to have the drive the vertical gliding threaded rod of lifting slide, the lateral wall fixedly connected with of lifting slide is used for driving the reciprocating swing's of rotary rod lift orifice plate, the one end that the lift orifice plate was kept away from to the rotary rod has connect soon and is used for driving spacing slider follows the vertical gliding support bent plate of spacing post to make support the rotatory drive of bent plate the lift cylinder is along the outer wall vertical slip of fixed column, the top fixedly connected with of lift cylinder and the backup pad of adjusting base inner wall sliding connection.

Preferably, the top end of the supporting plate is fixedly connected with a clamping mechanism, the top end of the clamping mechanism is provided with a pressing mechanism in sliding connection with the clamping mechanism, and one side of the pressing mechanism is tightly attached to the cabinet body.

Preferably, clamping mechanism includes clamping motor, screw rod, removal slider, connecting rod, spring sleeve, compression spring, draws and rises cylinder, clamping slider and spacing traveller, clamping mechanism inner wall fixedly connected with clamping motor, and the output of clamping motor installs the screw rod, the outer wall threaded connection of screw rod has and removes the slider, the lateral wall of removing the slider has connect the connecting rod soon, and the connecting rod keeps away from the one end that removes the slider and is provided with the spring sleeve, the inside of spring sleeve is located the inner wall fixedly connected with compression spring of connecting rod, and the compression spring one end of keeping away from the connecting rod extends to the outside fixedly connected with that the spring sleeve draws and rises the cylinder, the one end that the spring sleeve was kept away from to drawing the cylinder has connect soon with the clamping slider of hold-down mechanism bottom fixed connection, and the inside of clamping slider runs through there is spacing traveller.

Preferably, four groups of connecting rods are arranged, the position relation of the four groups of connecting rods is distributed in an equiangular circumference manner relative to the central axis of the screw, and the connecting rods and the screw form a sliding rotation structure through the movable sliding blocks.

Preferably, the central axis of the connecting rod, the central axis of the spring sleeve and the central axis of the pulling cylinder coincide, the pulling cylinder forms a telescopic structure with the spring sleeve through the compression spring, the clamping slide block forms a sliding structure with the limiting slide column through the pulling cylinder, and the sliding length of the clamping slide block is equal to the length of the limiting slide column.

Preferably, hold-down mechanism includes telescopic link, butt piece, butt slider, butt spring, drive lever, compressing rod and compact heap, hold-down mechanism's inner wall runs through there is the telescopic link, and the one end of telescopic link extends to hold-down mechanism's outside fixedly connected with butt piece, the one end fixedly connected with butt slider of butt piece is kept away from to the telescopic link, and the lateral wall and the hold-down mechanism inner wall connection position fixedly connected with butt spring of butt slider, the top of butt slider has connect the drive lever soon, and the top of drive lever has connect soon with the compressing rod that the hold-down mechanism inner wall connects soon, the one end that the drive lever was kept away from to the compressing rod extends to the outside of hold-down mechanism and the butt position fixedly connected with compact heap of the cabinet body.

Preferably, the compressing mechanisms are provided with four groups, the four groups of compressing mechanisms are respectively located on the periphery of the cabinet body in position distribution, and the central axis of the telescopic rod and the central axis of the compressing rod are located on the same vertical plane.

Preferably, the driving rod forms a sliding rotation structure through the abutting sliding block and the pressing mechanism, the pressing rod forms a rotation structure through the driving rod and the pressing mechanism, and the length of the driving rod is greater than the vertical height from the abutting sliding block to the rotation center of the pressing rod.

Preferably, the support bent plate is an L-shaped plate, the bending part of the support bent plate can be folded, and the central axis of the limiting column is parallel to the central axis of the fixing column.

Compared with the prior art, the invention has the beneficial effects that:

1. this waterproof support base with adjustable communication cabinet is equipped with to user's external, through setting up the lift cylinder, in adjusting the base, the threaded rod rotates and drives the lift orifice plate and slide along the inner wall of adjusting the base, so that the lift orifice plate drives the rotary rod through the lift orifice plate and rotates, the rotary rod drives and supports the bent plate motion, it drives spacing slider and slides along spacing post to support the bent plate motion, so that the crooked position of supporting the bent plate drives the lift cylinder and slides along the outer wall of fixed column, the realization is carried out the horizontal adjustment operation to clamping mechanism.

2. This waterproof support base with adjustable communication cabinet user external assembly through setting up the spring sleeve, and in clamping mechanism, the screw rod drives and removes the slider and slide along clamping mechanism's inner wall to make and remove the slider motion and drive four group's connecting rod synchronous motion, the connecting rod drives through the compression spring in the spring sleeve and draws and rise the motion of cylinder, through compression spring effect, realizes the length adjustment operation to the connecting rod and draw and rise the cylinder.

3. This waterproof support base with adjustable communication cabinet user external assembly through setting up clamping slide, and the connecting rod drives through the compression spring in the spring sleeve and draws and rises the cylinder motion, draws and rises the cylinder motion and drive clamping slide and slide along the outer wall of spacing traveller, realizes the tight fixed operation of clamp of hold-down mechanism to the clamp of the cabinet body of different specifications.

4. This waterproof support base with adjustable communication cabinet user external assembly through setting up the compact heap, in hold-down mechanism, when the butt piece carries out the butt with the outer wall of the cabinet body for the butt piece passes through the butt spring and drives the telescopic link motion, and the telescopic link motion drives the compact heap rotation through the active lever, rotates through the compact heap and drives the motion, realizes compressing tightly fixed operation to the cabinet body.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the adjusting base according to the present invention;

FIG. 3 is a schematic view of the inner structure of the adjusting base according to the present invention;

FIG. 4 is a first perspective view of the clamping mechanism of the present invention;

FIG. 5 is a second perspective view of the clamping mechanism of the present invention;

FIG. 6 is a schematic view of the internal connection structure of the spring sleeve of the present invention;

FIG. 7 is a schematic view of the external structure of the pressing mechanism of the present invention;

fig. 8 is a schematic view of the internal structure of the pressing mechanism of the present invention.

In the figure: 1. adjusting the base; 2. a threaded rod; 3. a lifting slide block; 4. lifting the pore plate; 5. rotating the rod; 6. supporting the bent plate; 7. a limiting slide block; 8. a limiting post; 9. lifting the cylinder barrel; 10. fixing the column; 11. a support plate; 12. a clamping mechanism; 1201. clamping the motor; 1202. a screw; 1203. moving the slide block; 1204. a connecting rod; 1205. a spring sleeve; 1206. a compression spring; 1207. pulling up the cylinder barrel; 1208. clamping the sliding block; 1209. a limiting sliding column; 13. a hold-down mechanism; 1301. a telescopic rod; 1302. a butting block; 1303. abutting against the sliding block; 1304. an abutment spring; 1305. a driving lever; 1306. a compression bar; 1307. a compression block; 14. a cabinet body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 8, in an embodiment of the present invention, an adjustable waterproof supporting base for a communication cabinet outdoor assembly includes an adjusting base 1, a lifting slider 3, a rotating rod 5, a limiting slider 7, a limiting post 8, a lifting cylinder 9 and a fixing post 10, a threaded rod 2 for driving the lifting slider 3 to vertically slide penetrates through an inner wall of the adjusting base 1, a lifting hole plate 4 for driving the rotating rod 5 to swing back and forth is fixedly connected to a side wall of the lifting slider 3, a supporting bent plate 6 for driving the limiting slider 7 to vertically slide along the limiting post 8 is screwed to one end of the rotating rod 5 far away from the lifting hole plate 4, so that the supporting bent plate 6 rotates to drive the lifting cylinder 9 to vertically slide along an outer wall of the fixing post 10, and a supporting plate 11 slidably connected to an inner wall of the adjusting base 1 is fixedly connected to a top end of the lifting cylinder 9.

The top end fixedly connected with clamping mechanism 12 of backup pad 11, and the top of clamping mechanism 12 be provided with clamping mechanism 12 sliding connection's hold-down mechanism 13, one side of hold-down mechanism 13 closely laminates has cabinet body 14, through setting up clamping mechanism 12, realizes the tight fixed operation of clamp of hold-down mechanism 13 to the cabinet body 14 of different specifications, through setting up hold-down mechanism 13, is favorable to realizing that compression bar 1306 rotates and drives compressing block 1307 and stabilize the operation that compresses tightly to cabinet body 14.

The clamping mechanism 12 comprises a clamping motor 1201, a screw 1202, a moving slider 1203, a connecting rod 1204, a spring sleeve 1205, a compression spring 1206, a lifting cylinder 1207, a clamping slider 1208 and a limiting sliding column 1209, the inner wall of the clamping mechanism 12 is fixedly connected with the clamping motor 1201, the screw 1202 is installed at the output end of the clamping motor 1201, the outer wall of the screw 1202 is in threaded connection with the moving slider 1203, the connecting rod 1204 is screwed to the side wall of the moving slider 1203, one end of the connecting rod 1204, far away from the moving slider 1203, is provided with the spring sleeve 1205, the interior of the spring sleeve 1205 is fixedly connected with the compression spring 1206, the end of the compression spring 1206, far away from the connecting rod 1204, extends to the exterior of the spring sleeve 1205, is fixedly connected with the lifting cylinder 1207, one end of the lifting slider 1207, far away from the spring sleeve 1205, is screwed with the clamping slider 1208, the limiting sliding column 1209 penetrates through the interior of the clamping slider 1208, the clamping slider is beneficial to drive the moving slider 1203 to synchronously move, the connecting rod 1204 drives the lifting cylinder 1207 to move through the compression spring in the sleeve 1205, and the sliding of the sliding cylinder 1207, and the sliding operation mechanism 12014 with different specifications of the fixed sliding cylinder 1207 is realized along the fixed outer wall of the fixed sliding cylinder 12014.

The connecting rods 1204 are provided with four groups, the positional relationship of the four groups of connecting rods 1204 is distributed in an equal-angle circumference manner about the central axis of the screw 1202, the connecting rods 1204 form a sliding rotation structure through the movable sliding block 1203 and the screw 1202, and the four groups of connecting rods 1204 are arranged, so that the movable sliding block 1203 moves to drive the four groups of connecting rods 1204 to move synchronously, and the connecting rods 1204 are favorable for driving the lifting cylinder 1207 to move through the compression spring 1206 in the spring sleeve 1205.

The axis of connecting rod 1204, the axis of spring sleeve 1205 coincides with the axis of drawing up cylinder 1207, it constitutes extending structure to draw up cylinder 1207 through between compression spring 1206 and connecting rod 1204 and the spring sleeve 1205, press from both sides tight slider 1208 and constitute sliding structure through drawing up between cylinder 1207 and the spacing traveller 1209, and the length of sliding length and the spacing traveller 1209 of pressing from both sides tight slider 1208 equals, through setting up the relative position of connecting rod 1204, spring sleeve 1205 and drawing up cylinder 1207, be favorable to the clamping operation to the cabinet body 14 of different specifications.

The pressing mechanism 13 comprises a telescopic rod 1301, an abutting block 1302, an abutting sliding block 1303, an abutting spring 1304, a driving rod 1305, a pressing rod 1306 and a pressing block 1307, the telescopic rod 1301 penetrates through the inner wall of the pressing mechanism 13, one end of the telescopic rod 1301 extends to the external fixedly connected abutting block 1302 of the pressing mechanism 13, the telescopic rod 1301 is fixedly connected with the abutting sliding block 1303 away from the one end of the abutting block 1302, the abutting spring 1304 is fixedly connected with the connecting portion of the side wall of the abutting sliding block 1303 and the inner wall of the pressing mechanism 13, the driving rod 1305 is screwed at the top end of the abutting sliding block 1303, the pressing rod 1306 screwed with the inner wall of the pressing mechanism 13 is screwed at the top end of the driving rod 1305, one end of the pressing rod 1306 away from the driving rod 1305 extends to the pressing block 1307 fixedly connected with the outer portion of the pressing mechanism 13 and the abutting portion of the cabinet 14, the pressing mechanism 13 is arranged, when the abutting block 1302 abuts against the cabinet 14, the telescopic rod 1301 is driven by the abutting spring 1304 to move, the telescopic rod 1301 is driven by the driving rod 1305 to rotate the pressing rod 1306, and the pressing rod 1307 is achieved.

The four groups of pressing mechanisms 13 are arranged, the position distribution of the four groups of pressing mechanisms 13 is respectively located around the cabinet body 14, the central axis of the telescopic rod 1301 and the central axis of the pressing rod 1306 are located on the same vertical plane, stable and fixed operation on the cabinet body 14 is achieved by arranging the four groups of pressing mechanisms 13, the telescopic rod 1301 is facilitated to move, the driving rod 1305 drives the pressing rod 1306 to rotate, and control operation on rotation of the pressing rod 1306 is achieved.

The active rod 1305 forms a sliding rotating structure through the abutting sliding block 1303 and the pressing mechanism 13, the pressing rod 1306 forms a rotating structure through the active rod 1305 and the pressing mechanism 13, the length of the active rod 1305 is larger than the vertical height from the abutting sliding block 1303 to the rotating center of the pressing rod 1306, the telescopic rod 1301 is facilitated to move, the pressing rod 1306 is driven to rotate through the active rod 1305, and the pressing block 1307 is enabled to press the cabinet 14 through the rotation of the pressing rod 1306.

Support bent plate 6 and be "L" shaped plate, and the crooked position that supports bent plate 6 can be folded, and the axis of spacing post 8 parallels with the axis of fixed column 10, is favorable to rotary rod 5 to rotate and drives and support the motion of bent plate 6, supports the motion of bent plate 6 and drives spacing slider 7 and slide along spacing post 8 to make the crooked position that supports bent plate 6 drive lift cylinder 9 and slide along the outer wall of fixed column 10, realize the lift operation to lift cylinder 9.

The working principle of the invention is as follows: this waterproof support base with adjustable communication cabinet user external assembly, when using, at first carry out the horizontal adjustment operation, in adjusting base 1, rotate four threaded rods of group 2, threaded rod 2 rotates and drives lift orifice plate 4 along the inner wall slip of adjusting base 1, so that lift orifice plate 4 drives rotary rod 5 through lift orifice plate 4 and rotates, rotary rod 5 drives and supports the motion of bent plate 6, it drives spacing slider 7 along spacing post 8 to support the motion of bent plate 6, so that the crooked position that supports bent plate 6 drives lift cylinder 9 and slides along the outer wall of fixed column 10, be favorable to lift cylinder 9 to drive clamping mechanism 12 through four backup pad of group 11 and carry out the horizontal adjustment operation.

Then, the cabinet bodies 14 of different specifications are clamped and fixed, in the clamping mechanism 12, the clamping motor 1201 operates to drive the moving slider 1203 to slide along the inner wall of the clamping mechanism 12 through the screw 1202, so that the moving slider 1203 moves to drive the four groups of connecting rods 1204 to move synchronously, the connecting rods 1204 drive the lifting cylinder 1207 to move through the compression spring 1206 in the spring sleeve 1205, the lifting cylinder 1207 moves to drive the clamping slider 1208 to slide along the outer wall of the limiting sliding column 1209, and the clamping mechanism 13 clamps and fixes the cabinet bodies 14 of different specifications.

Finally, next, the periphery of the cabinet 14 is pressed, when the cabinets 14 of different specifications are clamped and fastened, the abutting block 1302 in the pressing mechanism 13 abuts against the outer wall of the cabinet 14, so that the abutting block 1302 drives the telescopic rod 1301 to move through the abutting spring 1304, the telescopic rod 1301 moves to drive the pressing rod 1306 to rotate through the driving rod 1305, and the pressing rod 1306 rotates to drive the pressing block 1307 to press the cabinet 14.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (8)

1. The utility model provides a waterproof support base with adjustable communication cabinet user external assembly, is including adjusting base (1), lifting slide (3), rotary rod (5), spacing slider (7), spacing post (8), lift cylinder (9) and fixed column (10), its characterized in that: a threaded rod (2) for driving the lifting slider (3) to vertically slide penetrates through the inner wall of the adjusting base (1), a lifting hole plate (4) for driving the rotary rod (5) to reciprocate is fixedly connected to the side wall of the lifting slider (3), a supporting bent plate (6) for driving the limiting slider (7) to vertically slide along the limiting column (8) is screwed to one end, far away from the lifting hole plate (4), of the rotary rod (5), so that the supporting bent plate (6) rotates to drive the lifting cylinder barrel (9) to vertically slide along the outer wall of the fixing column (10), and a supporting plate (11) in sliding connection with the inner wall of the adjusting base (1) is fixedly connected to the top end of the lifting cylinder barrel (9);

the top end of the supporting plate (11) is fixedly connected with a clamping mechanism (12), a pressing mechanism (13) which is connected with the clamping mechanism (12) in a sliding mode is arranged at the top end of the clamping mechanism (12), and a cabinet body (14) is tightly attached to one side of the pressing mechanism (13).

2. The adjustable waterproof support base for the outdoor assembly of the communication cabinet as claimed in claim 1, wherein: clamping mechanism (12) are including pressing from both sides tight motor (1201), screw rod (1202), removal slider (1203), connecting rod (1204), spring sleeve (1205), compression spring (1206), draw and rise cylinder (1207), press from both sides tight slider (1208) and spacing traveller (1209), clamping mechanism (12) inner wall fixedly connected with presss from both sides tight motor (1201), and press from both sides the output of motor (1201) and install screw rod (1202), the outer wall threaded connection of screw rod (1202) has removal slider (1203), the lateral wall of removal slider (1203) has screwed connection pole (1204), and the connecting rod (1204) keep away from the one end of removal slider (1203) and be provided with spring sleeve (1205), the inside of spring sleeve (1205) is located the inner wall fixedly connected with compression spring (1206) of connecting rod (1204), and compression spring (1206) keep away from the one end of connecting rod (1204) and extend to the outside fixedly connected with of spring sleeve (1207) of spring sleeve (1205), the one end that the spring sleeve (1205) was kept away from spring sleeve (1205) has screwed connection with the tight slider (1202) that is connected with the bottom end of hold-down mechanism (13) and the tight slider (1208), and the inside of the tight slider (1208) that presss from of clamping has worn the spacing traveller (1208).

3. The adjustable waterproof support base for the outdoor assembly of the communication cabinet as claimed in claim 2, wherein: the connecting rods (1204) are provided with four groups, the position relation of the four groups of connecting rods (1204) is distributed in an equiangular circle around the central axis of the screw rod (1202), and the connecting rods (1204) form a sliding rotation structure with the screw rod (1202) through the movable sliding block (1203).

4. The adjustable waterproof support base for the outdoor assembly of the communication cabinet as claimed in claim 2, wherein: the central axis of the connecting rod (1204), the central axis of the spring sleeve (1205) and the central axis of the pulling cylinder barrel (1207) coincide, the pulling cylinder barrel (1207) forms a telescopic structure through the compression spring (1206) and between the connecting rod (1204) and the spring sleeve (1205), the clamping slide block (1208) forms a sliding structure through the pulling cylinder barrel (1207) and the limiting slide column (1209), and the sliding length of the clamping slide block (1208) is equal to the length of the limiting slide column (1209).

5. The adjustable waterproof support base for the outdoor assembly of the communication cabinet as claimed in claim 1, wherein: the pressing mechanism (13) comprises a telescopic rod (1301), an abutting block (1302), an abutting sliding block (1303), an abutting spring (1304), a driving rod (1305), a pressing rod (1306) and a pressing block (1307), wherein the telescopic rod (1301) penetrates through the inner wall of the pressing mechanism (13), one end of the telescopic rod (1301) extends to the external fixedly connected abutting block (1302) of the pressing mechanism (13), one end, far away from the abutting block (1302), of the telescopic rod (1301) is fixedly connected with the abutting sliding block (1303), the connecting portion of the side wall of the abutting sliding block (1303) and the inner wall of the pressing mechanism (13) is fixedly connected with the abutting spring (1304), the driving rod (1305) is screwed to the top end of the abutting sliding block (1303), the pressing rod (1306) is screwed to the pressing rod (1306) connected with the inner wall of the pressing mechanism (13), and one end, far away from the driving rod (1305), of the pressing rod (1306) extends to the external portion, fixedly connected with the abutting block (1307) of the cabinet body (14).

6. The adjustable waterproof support base for the outdoor assembly of the communication cabinet as claimed in claim 5, wherein: the four groups of pressing mechanisms (13) are arranged, the positions of the four groups of pressing mechanisms (13) are distributed and are respectively located on the periphery of the cabinet body (14), and the central axis of the telescopic rod (1301) and the central axis of the pressing rod (1306) are located on the same vertical plane.

7. The adjustable waterproof support base for the outdoor assembly of the communication cabinet as claimed in claim 5, wherein: the active rod (1305) forms a sliding rotating structure through the abutting sliding block (1303) and the pressing mechanism (13), the pressing rod (1306) forms a rotating structure through the active rod (1305) and the pressing mechanism (13), and the length of the active rod (1305) is larger than the vertical height from the abutting sliding block (1303) to the rotating center of the pressing rod (1306).

8. The adjustable waterproof support base for the outdoor assembly of the communication cabinet as claimed in claim 1, wherein: the support bent plate (6) is an L-shaped plate, the bent part of the support bent plate (6) can be folded, and the central axis of the limiting column (8) is parallel to the central axis of the fixing column (10).

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