CN113120818A

CN113120818A - Maintenance platform that landscape removed with being convenient for

Info

Publication number: CN113120818A
Application number: CN202110409680.2A
Authority: CN
Inventors: 刘莉苹
Original assignee: Individual
Current assignee: Fujian Jinding Construction Development Co ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-07-16
Anticipated expiration: 2041-04-16
Also published as: CN113120818B

Abstract

The invention discloses a maintenance platform convenient to move for garden landscapes, which comprises a long plate, wherein two sides of the lower part of the long plate are connected with connecting frames; the moving mechanism is arranged between the long plate and the connecting frame; the lifting mechanism is arranged on the long plate. The maintenance platform convenient to move for the garden landscape disclosed by the invention has the advantages that the maintenance platform is easily fixed and is stabilized on the land, the user is prevented from falling down and being injured due to the unstable maintenance platform, the fixed feet are automatically driven to rotate, manpower is saved, the user is assisted to step on and step off the lifting frame, and the design is more humanized.

Description

Maintenance platform that landscape removed with being convenient for

Technical Field

The invention relates to a maintenance platform, in particular to a maintenance platform which is convenient to move and used for garden landscape.

Background

The landscape is the crystal of human wisdom, and the main objective is to add thick artistic interest to cultural square, park, district, and meanwhile, the wood-like series landscape product is used as a novel ecological landscape product, and the application and popularization of the product are also the actual actions of protecting the environment and making love with nature.

The garden landscape needs to maintain the optimal state for a long time, so that people are needed, namely, a so-called gardener regularly trims the garden landscape, sometimes, some green plants with higher height need to be trimmed, at the moment, an auxiliary tool is used for maintaining the platform, the existing maintenance platform cannot be fixed on the ground after an auxiliary user rises, if the maintenance platform shakes, the user is easy to fall down and hurt, and then, the maintenance platform is manually stabilized, manpower is inevitably wasted, and the maintenance platform is troublesome, and finally, the lifting frame is located at a certain height, and the ascending and the descending frame are inconvenient and dangerous to ascend and descend.

Therefore, it is necessary to provide a maintenance platform for landscape architecture, which easily assists a user to ascend and repair a garden, automatically stabilizes the maintenance platform on the ground and is convenient to unlock, and provides a ladder to assist the user to ascend and descend the frame.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the maintenance platform which is convenient to move and is used for garden landscape, the maintenance platform can easily assist a user to lift up and trim a garden, the maintenance platform can be automatically and stably fixed on the ground and is convenient to unlock, and the ladder can assist the user to lift up and down the frame.

The purpose of the invention can be achieved by adopting the following technical scheme:

in a first aspect, the present invention provides a maintenance platform for garden landscape, which is convenient to move, and comprises: the two sides of the lower part of the long plate are connected with connecting frames; the moving mechanism is arranged between the long plate and the connecting frame; the lifting mechanism is arranged on the long plate.

Further, the moving mechanism includes: the two sides of the lower part of the long plate are symmetrically connected with supporting legs; the lower parts of the supporting legs are rotatably connected with wheels; four fixing rods are connected between the supporting legs at the two sides of the fixing rods, and the lower side fixing rods are connected with the outer side of the connecting frame; handles are connected between the outer sides of the middle parts of the supporting legs at the two sides.

Further, the lifting mechanism includes: the cylinders are arranged on both sides of the long plate; the lifting frame is connected between the upper sides of the piston rods of the air cylinders; the two sides of the lifting frame are rotatably connected with the revolving door; the clamping hooks are symmetrically connected to one side of the rotating door on one side up and down, and the rotating door on one side of the clamping hooks is matched with the rotating door on one side.

Further, still including fixed establishment, fixed establishment includes: the outer sides of the upper parts of the supporting legs are symmetrically connected with the fixing plates; the first rotating shafts are rotatably connected between the fixing plates; the first rotating shafts are connected with the fixing pins; the upper parts of the fixing feet are evenly connected with a plurality of anti-skid nails at intervals; the inner sides of the upper parts of the fixing legs are connected with the inserting plates.

Further, still including stop gear, stop gear is including: the inner sides of the upper parts of the supporting legs are connected with the brackets; the upper parts of the brackets on both sides are connected with the gap platforms; the inner side of the opening table is symmetrically and slidably connected with a sliding frame; three first springs are connected between the sliding frame and the opening table and sleeved on the sliding frame; the outer sides of the sliding frames are uniformly connected with three long nails at intervals, and the long nails are matched with the inserting plates; the middle parts of the two sides of the arc-shaped plate and the lifting frame are symmetrically connected with the arc-shaped plate, and the arc-shaped plate is matched with the sliding frame.

Further, still including canceling release mechanical system, canceling release mechanical system includes: the two sides of the lower part of the lifting frame are symmetrically connected with racks; the torsion springs are symmetrically connected between the fixing legs and the fixing plate and sleeved on the first rotating shaft; the inner sides of the first rotating shafts are connected with gears, and the gears are matched with the racks.

Furthermore, the lifting frame also comprises a ladder mechanism which is arranged between one side of the lower part of the lifting frame and one side of the lower part of the long plate.

Further, the ladder mechanism comprises: the middle of one side of the lower part of the lifting frame is connected with a hook plate; the limiting blocks are symmetrically connected to one side of the bottom of the lifting frame; the middle of one side of the lower part of the long plate is connected with a connecting plate; the connecting plate is characterized by comprising three thick round rods, wherein one side of the lower part of the connecting plate is uniformly connected with the three thick round rods in a sliding manner at intervals; the second springs are connected between the lower sides of the rough round rods and the connecting plate and sleeved on the rough round rods; three thin round rods are connected to one side of the lower part of the connecting plate at intervals in a sliding manner; the limiting plate is connected between the upper parts of the thick round rod and the thin round rod; one side of the limiting plate is rotatably connected with the second rotating shaft; the second rotating shaft is connected with a prism ladder which is matched with the limiting block and the limiting plate; the connecting blocks are symmetrically connected to one side of the lower part of the connecting plate; the third springs are connected between the connecting blocks and the prismatic ladder; the cylinder, one side of the second spindle is symmetrically connected with two cylinders; the dog, connecting plate both sides all are connected with the dog, and the dog is mutually supported with the cylinder.

The invention has the advantages that: (1) according to the invention, the lifting frame drives the arc-shaped plate to move upwards, the long nail is pushed to move outwards, the fixing feet are loosened, and the fixing feet are pushed to rotate outwards, so that the anti-skid pins are inserted into the ground, the maintenance platform is fixed, the effect of easily fixing the maintenance platform and stabilizing the maintenance platform on the ground is achieved, and a user is prevented from falling down and being injured due to the unstable maintenance platform;

(2) according to the invention, the lifting platform drives the rack to move upwards and drives the gear and the fixing feet to move outwards to rotate, so that the maintenance platform is fixed, the lifting platform drives the rack to move upwards and drives the gear and the fixing feet to move inwards to fold the fixing feet, the effect of automatically driving the fixing feet to rotate is achieved, and manpower is saved;

(3) according to the invention, the user steps on the prismatic ladder to ascend the lifting frame, after the garden is finished, the hook plate moves downwards to push the prismatic ladder to rotate clockwise to abut against the ground, and the user steps on the prismatic ladder to descend the lifting frame, so that the effect of assisting the user to ascend and descend the lifting frame is achieved, and the design is more humanized.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of the moving mechanism of the present invention.

Fig. 3 is a schematic perspective view of the lifting mechanism of the present invention.

Fig. 4 is a schematic perspective view of the fixing mechanism of the present invention.

Fig. 5 is a schematic perspective view of the limiting mechanism of the present invention.

Fig. 6 is a schematic perspective view of the reset mechanism of the present invention.

Fig. 7 is a perspective view of the ladder mechanism of the present invention.

The meaning of the reference symbols in the figures: 1: long plate, 2: connecting frame, 3: moving mechanism, 31: support leg, 32: wheel, 33: fixing rod, 34: handle, 4: lifting mechanism, 41: air cylinder, 42: lifting frame, 43: revolving door, 44: hook, 5: fixing mechanism, 51: fixing plate, 52: first rotating shaft, 53: fixing leg, 54: stud, 55: plug board, 6: stop gear, 61: bracket, 62: gap table, 63: carriage, 64: spike, 65: first spring, 66: arc plate, 7: reset mechanism, 71: rack, 72: gear, 73: torsion spring, 8: ladder mechanism, 81: hook plate, 82: stopper, 83: a stopper plate, 84: prismatic ladder, 85: connection plate, 86: thin round bar, 87: round bar, 88: second spring, 89: third spring, 810: second rotation shaft, 811: connection block, 812: cylinder, 813: and a stop block.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.

Example 1

As shown in fig. 1-3, this embodiment discloses a maintenance platform for landscape with being convenient for remove, including long board 1, link 2, moving mechanism 3 and lifting mechanism 4, the link 2 is all connected with to the left and right sides of long board 1 lower part, is equipped with moving mechanism 3 between long board 1 and the link 2, is equipped with lifting mechanism 4 on the long board 1.

The moving mechanism 3 comprises supporting legs 31, wheels 32, fixing rods 33 and handles 34, the supporting legs 31 are symmetrically connected to the front and the rear of the lower portion of the long plate 1 in a left-right mode, the wheels 32 are connected to the lower portion of the supporting legs 31 in a rotating mode, the four fixing rods 33 are connected between the supporting legs 31 on the left side and the right side, the fixing rods 33 on the lower side are connected with the outer side of the connecting frame 2, and the handles 34 are connected between the outer sides of the middle portions of the.

The lifting mechanism 4 comprises a cylinder 41, a lifting frame 42, a rotating door 43 and a clamping hook 44, the cylinder 41 is installed on the left side and the right side of the long plate 1, the lifting frame 42 is connected between the upper sides of piston rods of the cylinder 41, the rotating door 43 is rotatably connected on the left side and the right side of the front portion of the lifting frame 42, the clamping hooks 44 are symmetrically connected on the left side and the right side of the right rotating door 43 in an up-and-down mode, and the clamping hooks 44 and the.

When a user needs to use the maintenance platform to trim gardens, firstly, the handle 34 is pushed, the maintenance platform is pushed to a proper position under the rotating action of the wheels 32, then the left revolving door 43 is pushed to rotate clockwise to be far away from the hook 44, the lifting frame 42 is opened, the user can get on the lifting frame 42, after the user stands stably in the lifting frame 42, the left revolving door 43 is rotated anticlockwise, the left revolving door 43 is clamped in the hook 44 again, the lifting frame 42 is closed, at the moment, the air cylinder 41 is started, the piston rod of the air cylinder 41 moves upwards to drive the lifting frame 42 and the user to move upwards, after the user moves to a proper position, the air cylinder 41 is closed, the piston rod of the air cylinder 41 does not move any more, so that the lifting frame 42 and the user stop moving, at the moment, the user can trim gardens at the height, after trimming, the air cylinder 41 is started again, the piston rod of the air, drive lifting frame 42 and user's downward movement and get back to the original position, close cylinder 41 once more, promote left revolving door 43 clockwise rotation and keep away from pothook 44, open lifting frame 42, after the user jumps down lifting frame 42, rotate left revolving door 43 anticlockwise again and go into in pothook 44, fix left revolving door 43, resume to original state, so reciprocal, reach the effect that the person of facilitating the use repaiied different height landscape.

Example 2

As shown in fig. 1 and fig. 4 to 7, in some embodiments, the fixing device 5 is further included, the fixing device 5 includes a fixing plate 51, a first rotating shaft 52, fixing feet 53, anti-skid nails 54 and an inserting plate 55, the fixing plates 51 are symmetrically connected to the outer sides of the upper portions of the supporting legs 31, the first rotating shaft 52 is rotatably connected between the fixing plates 51, the fixing feet 53 are connected to the first rotating shaft 52, the anti-skid nails 54 are uniformly connected to the upper portions of the fixing feet 53 at intervals, and the inserting plate 55 is connected to the inner sides of the upper portions of the fixing feet 53.

Still including stop gear 6, stop gear 6 is including support 61, opening platform 62, balladeur train 63, spike 64, first spring 65 and arc 66, supporting leg 31 upper portion inboard all is connected with support 61, all be connected with opening platform 62 between the left and right sides support 61 upper portion, symmetrical sliding connection has the balladeur train 63 around opening platform 62 inboard, all be connected with three first springs 65 between balladeur train 63 and the opening platform 62, first spring 65 overlaps on balladeur train 63, the equal interval evenly connected with three spike 64 in balladeur train 63 outside, spike 64 and picture peg 55 mutually support, symmetrical connection has arc 66 around the equal both sides middle part of lifting frame 42, arc 66 and balladeur train 63 mutually support.

In the starting state, the spike 64 presses the inserting plate 55, the fixing leg 53 is fixed, when the lifting frame 42 moves upwards, the arc-shaped plate 66 is driven to move upwards, firstly, the pushing sliding frame 63 moves inwards, the first spring 65 is stretched, the spike 64 is driven to move inwards to be far away from the inserting plate 55, the inserting plate 55 is loosened, namely, the fixing leg 53 is loosened, the outer side of the fixing leg 53 is pushed to rotate 90 degrees, the inserting plate 55 and the antiskid nail 54 are driven to rotate 90 degrees outwards, so that the antiskid nail 54 is pricked into the ground, the maintenance platform is stabilized on the ground, then, the arc-shaped plate 66 continues to move upwards until the lower side inclined plane contacts with the sliding frame 63, the sliding frame 63 is not pushed any more, the sliding frame 63 is pushed to move inwards under the action of the first spring 65, the original state is restored, finally, the arc-shaped plate 66 continues to move upwards to be far away from the sliding frame 63, after the, arc 66 moves to contacting the back of balladeur train 63, will promote balladeur train 63 and spike 64 and move to the outside, first spring 65 is stretched, promote fixed foot 53 and rotate 90 degrees to the inboard this moment, drive antiskid nail 54 and picture peg 55 rotate 90 degrees to the inboard and get back to the original position, antiskid nail 54 breaks away from the soil, arc 66 continues to move down to the upside inclined plane and contacts the back of balladeur train 63 afterwards, will no longer promote balladeur train 63, under the effect of first spring 65, promote balladeur train 63 and spike 64 and move to the inboard, spike 64 pushes down picture peg 55 once more, fix fixed foot 53, resume to former state, can promote the pulling once more this moment, thereby promote the maintenance platform and move, so reciprocal, reach light fixed maintenance platform, stabilize its effect on the soil, avoid the user to fall down the injury because of maintenance platform unstable.

The lifting frame is characterized by further comprising a reset mechanism 7, wherein the reset mechanism comprises a rack 71, a gear 72 and a torsion spring 73, the rack 71 is symmetrically connected to the front side and the rear side of the lower portion of the lifting frame 42 in the bilateral mode, the torsion spring 73 is symmetrically connected between the fixing foot 53 and the fixing plate 51 in the bilateral mode, the torsion spring 73 is sleeved on the first rotating shaft 52, the gear 72 is connected to the inner side of the first rotating shaft 52, and the gear 72 is matched with the rack 71.

In the starting state, the torsion spring 73 is in a deformed state, when the lifting frame 42 drives the arc-shaped plate 66 to move upwards, the inserting plate 55 and the fixing leg 53 are released, and at the same time, the lifting frame 42 also drives the rack 71 to move upwards, drives the gear 72 to rotate outwards, drives the first rotating shaft 52 to rotate outwards, and simultaneously pushes the fixing leg 53 to rotate outwards under the action of the torsion spring 73, after the fixing leg 53 rotates outwards by 90 degrees, the rack 71 moves upwards to separate from the gear 72, so that the anti-skid stud 54 rotates outwards by 90 degrees and is pricked in the ground, after the user finishes trimming the garden, the lifting frame 42 drives the rack 71 to move downwards to contact with the gear 72, drives the gear 72 to rotate inwards, thereby driving the first rotating shaft 52 and the fixing leg 53 to rotate inwards by 90 degrees to return to the original position, the torsion spring 73 deforms, so that the anti-skid stud 54 separates from the ground, and simultaneously drives the inserting plate, and finally is pressed and fixed by the long nail 64, thereby fixing the fixing foot 53 and restoring to the original state, and the reciprocating way is performed, so as to achieve the effect of automatically driving the fixing foot 53 to rotate, and save labor.

The ladder mechanism 8 further comprises a ladder mechanism 8, the ladder mechanism 8 comprises a hook plate 81, limiting blocks 82, limiting plates 83, a prismatic ladder 84, a connecting plate 85, thin round rods 86, thick round rods 87, second springs 88, third springs 89, a second rotating shaft 810, a connecting block 811, a cylinder 812 and a stop 813, the hook plate 81 is connected in the middle of the front side of the lower portion of the lifting frame 42, the limiting blocks 82 are symmetrically connected in the left-right direction of the front side of the bottom of the lifting frame 42, the connecting plate 85 is connected in the middle of the front side of the lower portion of the long plate 1, the three thick round rods 87 are evenly connected in a sliding mode at intervals in the front side of the lower portion of the connecting plate 85, the second springs 88 are connected between the lower side of the thick round rods 87 and the connecting plate 85, the second springs 88 are sleeved on the thick round rods 87, the three thin round rods 86 are evenly connected in a sliding mode at intervals in the rear side of the, be connected with prismatic ladder 84 on the second pivot 810, prismatic ladder 84 and stopper 82 and limiting plate 83 are mutually supported, and connecting plate 85 lower part front side bilateral symmetry is connected with connecting block 811, all is connected with third spring 89 between connecting block 811 and the prismatic ladder 84, and upside bilateral symmetry is connected with two cylinders 812 behind the second pivot 810, and the anterior left and right sides of connecting plate 85 all is connected with dog 813, and dog 813 and cylinder 812 are mutually supported.

In the starting state, the prismatic ladder 84 is in a tilting state, the second spring 88 is stretched, the third spring 89 is stretched, a user steps on the prismatic ladder 84 to climb on the lifting frame 42, then the lifting frame 42 moves upwards to drive the hook plate 81 and the limiting block 82 to move upwards and keep away from the prismatic ladder 84, under the action of the second spring 88, the rough round rod 87 and the limiting block 83 are pushed to move upwards, meanwhile, under the action of the third spring 89, the prismatic ladder 84 is pushed to rotate clockwise to drive the second rotating shaft 810 and the cylinder 812 to rotate clockwise, the cylinder 812 is stopped after rotating to contact with the stopper 813, so that the second rotating shaft 810 and the prismatic ladder 84 stop rotating, the prismatic ladder 84 is in a vertical state, after the user finishes trimming in a garden, the lifting frame 42 moves downwards to drive the hook plate 81 and the limiting block 82 to move downwards, and after the hook plate 81 contacts the prismatic ladder 84, the prismatic ladder 84 is pushed to rotate anticlockwise, the prismatic ladder 84 rotates to the stopper 82 of contact back stop rotating, prismatic ladder 84 supports subaerial, third spring 89 is stretched, prismatic ladder 84 will promote limiting plate 83 and move down simultaneously, drive thin round bar 86 and thick round bar 87 and move down, second spring 88 is stretched, resume to former state, the user can step on prismatic ladder 84, step down lifting frame 42 and come to subaerial, so reciprocal, reach the effect that the auxiliary user steps on and step down lifting frame 42, the design is more humanized.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a landscape is with maintenance platform convenient to remove, characterized by, including: the connecting frames (2) are connected to the two sides of the lower part of the long plate (1); the moving mechanism (3) is arranged between the long plate (1) and the connecting frame (2); the lifting mechanism (4) is arranged on the long plate (1).

2. A maintenance platform for garden landscapes convenient to move according to claim 1, characterized in that the moving mechanism (3) comprises: the support legs (31) are symmetrically connected to both sides of the lower part of the long plate (1); the lower parts of the supporting legs (31) are respectively and rotatably connected with the wheels (32); four fixing rods (33) are connected between the supporting legs (31) on the two sides of the fixing rods (33), and the lower fixing rods (33) are connected with the outer side of the connecting frame (2); the handles (34) are connected between the outer sides of the middle parts of the handles (34) and the supporting legs (31) at the two sides.

3. A maintenance platform for garden landscapes convenient to move according to claim 2, characterized in that the lifting mechanism (4) comprises: the air cylinders (41) are mounted on two sides of the long plate (1); the lifting frame (42) is connected between the upper sides of the piston rods of the air cylinders (41); the two sides of the lifting frame (42) are both rotatably connected with the revolving door (43); the clamping hooks (44) are symmetrically connected to one side of the rotating door (43) at one side of the clamping hook (44) in an up-and-down mode, and the rotating door (43) at one side of the clamping hook (44) is matched with each other.

4. A maintenance platform for garden landscape convenient to move according to claim 3, characterized in that it further comprises a fixing mechanism (5), the fixing mechanism (5) comprises: the outer sides of the upper parts of the supporting legs (31) are symmetrically connected with the fixing plates (51); the first rotating shaft (52) is rotatably connected between the first rotating shaft (52) and the fixed plate (51); the fixing feet (53) are connected to the first rotating shaft (52); the upper parts of the anti-skid nails (54) and the fixing feet (53) are uniformly connected with a plurality of anti-skid nails (54) at intervals; the inner sides of the upper parts of the inserting plates (55) and the fixing legs (53) are connected with the inserting plates (55).

5. The maintenance platform convenient for movement for garden landscape according to claim 4, further comprising a limiting mechanism (6), wherein the limiting mechanism (6) comprises: the inner sides of the upper parts of the supporting legs (31) are connected with the supports (61); the upper parts of the brackets (61) on both sides are connected with the gap table (62); the inner side of the gap table (62) is symmetrically and slidably connected with the sliding frame (63); three first springs (65) are connected between the sliding frame (63) and the notch table (62), and the first springs (65) are sleeved on the sliding frame (63); the outer sides of the sliding frames (63) are uniformly connected with three long nails (64) at intervals, and the long nails (64) are matched with the inserting plate (55); the middle parts of the two sides of the arc-shaped plate (66) and the lifting frame (42) are symmetrically connected with the arc-shaped plate (66), and the arc-shaped plate (66) is matched with the sliding frame (63).

6. A maintenance platform convenient for moving for garden landscape according to claim 5, characterized by further comprising a reset mechanism (7), the reset mechanism comprising: the two sides of the lower part of the lifting frame (42) are symmetrically connected with the racks (71); the torsion springs (73) are symmetrically connected between the fixing legs (53) and the fixing plate (51), and the torsion springs (73) are sleeved on the first rotating shaft (52); the inner sides of the gears (72) and the first rotating shaft (52) are connected with the gears (72), and the gears (72) are matched with the racks (71).

7. The maintenance platform for garden landscape convenient to move according to claim 6, further comprising a ladder mechanism (8), wherein the ladder mechanism (8) is arranged between one side of the lower part of the lifting frame (42) and one side of the lower part of the long plate (1).

8. A maintenance platform for garden landscapes convenient to move according to claim 7, wherein the ladder mechanism (8) comprises: the middle of one side of the lower part of the lifting frame (42) is connected with the hook plate (81); the limiting blocks (82) are symmetrically connected to one side of the bottom of the lifting frame (42); the middle of one side of the lower part of the long plate (1) is connected with a connecting plate (85); three thick round rods (87) are connected to one side of the lower part of the connecting plate (85) at intervals in a sliding manner; the second springs (88) are connected between the lower sides of the rough round rods (87) and the connecting plate (85), and the second springs (88) are sleeved on the rough round rods (87); three thin round rods (86) are connected to one side of the lower part of the connecting plate (85) at intervals in a sliding manner; a limiting plate (83), wherein the limiting plate (83) is connected between the upper parts of the thick round rod (87) and the thin round rod (86); one side of the limiting plate (83) is rotatably connected with the second rotating shaft (810); the second rotating shaft (810) is connected with a prism ladder (84), and the prism ladder (84), the limiting block (82) and the limiting plate (83) are matched with each other; the connecting block (811), one side of the lower part of the connecting plate (85) is symmetrically connected with the connecting block (811); the third spring (89) is connected between the connecting block (811) and the prism ladder (84); the cylinder (812), one side of the second rotating shaft (810) is symmetrically connected with two cylinders (812); the stop blocks (813) are connected to the two sides of the connecting plate (85), and the stop blocks (813) are matched with the cylinders (812).