CN216287331U

CN216287331U - Website construction information display and release device

Info

Publication number: CN216287331U
Application number: CN202121794334.2U
Authority: CN
Inventors: 陈梦梦
Original assignee: Hangzhou Youqi Network Technology Co ltd
Current assignee: Hangzhou Youqi Network Technology Co ltd
Priority date: 2021-08-03
Filing date: 2021-08-03
Publication date: 2022-04-12
Anticipated expiration: 2031-08-03

Abstract

The utility model discloses a website construction information display and release device, which comprises a workbench, a rotary table, a housing and a display, wherein the workbench is arranged on the workbench; the rotary table is provided with a display plate; the display board comprises a vertical board and a drawing board; a plurality of T-shaped grooves are formed in the vertical plate; a first baffle is arranged at one end of the vertical plate; the top of the other end of the vertical plate is connected with a wedge-shaped strip in a sliding manner; a first spring is fixed between the wedge-shaped strip and the vertical plate; a square block is arranged on one side of the wedge-shaped strip; a plurality of T-shaped strips are arranged on the inner side of the drawing board; the T-shaped strip is inserted into the T-shaped groove; a second baffle is arranged at one end, far away from the first baffle, of the drawing board; the top of the second baffle is provided with a slot; the wedge-shaped strip is inserted into the slot; the utility model can effectively utilize the display to display and release the website construction information, and simultaneously, the drawing board with related information can be conveniently displayed on the turntable according to the requirement, and the use effect is good; the drawing board is convenient to replace through the cooperation of the wedge-shaped strips and the slots, and information needing to be displayed is convenient to adjust.

Description

Website construction information display and release device

Technical Field

The utility model belongs to the field of website information display devices, and particularly relates to a website construction information display and release device.

Background

Currently, website construction refers to the use of markup language, through a series of design, modeling, and execution processes, electronic format information is transmitted through the internet, and finally browsed by users in the form of graphical user interfaces, and the success or failure of a website has an extremely important relationship with website planning before website construction. The website construction covers many different skills and various information, and in order to enable people to better understand the website construction, the information of the website construction needs to be displayed and published.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a website construction information display and release device, which is used for better improving the website construction information display and release effect and is convenient to use as required.

The technical scheme provided by the utility model is as follows: a website construction information display and release device comprises a workbench, a rotary table rotationally connected to the workbench, a housing for separating the rotary table from the outside, and two displays symmetrically fixed outside the housing; a power chamber is arranged at the bottom of the workbench; a first motor is fixed in the power chamber; the main shaft of the first motor is connected with the rotary table; the bottom of the rotary table is provided with a spherical hinge groove; a plurality of balls are connected in the spherical hinge grooves in a sliding manner; the ball is in contact with the workbench; the door plate is rotatably connected to the housing; the rotary table is provided with a display plate; the display board comprises a vertical board arranged on the rotary table and a drawing board arranged on the vertical board; a plurality of T-shaped grooves are formed in the vertical plate; a first baffle is arranged at one end of the vertical plate; the drawing board abuts against the first baffle; the top of the other end of the vertical plate is connected with a wedge-shaped strip in a sliding manner; a first spring is fixed between the wedge-shaped strip and the vertical plate; a square block is arranged on one side of the wedge-shaped strip; the square block penetrates out of the vertical plate; a plurality of T-shaped strips are arranged on the inner side of the drawing board; the T-shaped strip is inserted into the T-shaped groove; a second baffle is arranged at one end, far away from the first baffle, of the drawing board; the second baffle is abutted against the vertical plate; the top of the second baffle is provided with a slot; the wedge-shaped strip is inserted into the slot.

When the drawing board is used, website information is put in through the display, information needing plane display is displayed through the drawing board, the drawing board is arranged on the vertical plate, and the T-shaped groove and the T-shaped strip are matched to limit the movement of the drawing board so that the drawing board is stabilized on the vertical plate; the first baffle and the second baffle block two ends of the T-shaped groove, so that the display board is more attractive; the matching of the slot and the wedge-shaped strip can prevent the drawing board from being separated from the vertical plate due to external shaking, and the drawing board can be taken down from the vertical plate after the wedge-shaped strip is separated from the slot by pushing the square block, so that the door plate can be conveniently opened to replace the drawing board; the vertical plate is arranged on the rotary table, and the rotary table can be driven by the first motor to rotate, so that the drawing board information can be displayed in all directions; the arrangement of the spherical hinge groove and the balls reduces the resistance of the rotary table during rotation, and the stable rotation of the rotary table is ensured.

Furthermore, a plurality of support legs are arranged at the bottom of the workbench; the supporting legs are rotatably connected with pulleys; an electric push rod is further fixed in the power chamber; the bottom of the electric push rod is fixed with an anti-skid pad; a cavity is formed inside the anti-skid pad; and a plurality of rubber strips are arranged at the bottom of the non-slip mat.

The working table can move conveniently by arranging the pulley, and the electric push rod drives the anti-slip mat to move downwards to block the pulley from moving so as to fix the working table; the arrangement of the cavity enables the non-slip mat to be more tightly attached to the bottom surface under the influence of air pressure in the cavity, so that the using effect of the non-slip mat is improved; the rubber strips enable a gap to be reserved between the bottom of the non-slip mat and the ground, and the non-slip mat is prevented from being pressed tightly on the ground and generating negative pressure between the non-slip mat and the ground to block subsequent separation.

Further, the display comprises a display screen, a mounting plate for fixing the display screen and a support column; one end of the supporting column is fixed on the housing; the other end of the supporting column is hinged with the mounting plate; a first gear is arranged on the supporting column; the back of the mounting plate is provided with a clamping groove; a first clamping block is connected in the clamping groove in a sliding manner; one end of the first clamping block is embedded with the first gear; a plurality of elastic ropes are fixed between the first clamping block and the clamping groove; the other end of the first clamping block is provided with a first inclined plate; a through groove is formed at the bottom of the clamping groove; a locking strip is inserted into the through groove; the bottom of the locking bar penetrates through the through groove; the top of the locking bar is inserted into the clamping groove and is provided with a second inclined plate; the first inclined plate is abutted against the second inclined plate; a flat plate is arranged in the middle of the locking bar; and a plurality of second springs are fixed between the flat plate and the through groove.

The first clamping block is matched with the first clamping tooth to limit the mounting plate to rotate relative to the support column, so that the mounting angle of the display screen is fixed; when the inclination angle of the display screen needs to be adjusted, the lock bar is pushed upwards to enable the second inclined plate to slide, the first inclined plate slides along the clamping groove under the action of the elastic rope, the first clamping tooth is far away from the first gear, the rotation of the supporting column is not limited any more, and the angle of the display screen can be adjusted; after the angle adjustment is completed, only the locking bar needs to be loosened, the second inclined plate is moved to be abutted against the first inclined plate under the action of the second spring, and the first clamping tooth is embedded with the first gear, so that the rotation stopping matching with the supporting column is realized again.

Further, a first supporting rod is rotatably connected to the supporting column; the mounting plate is rotatably connected with a second support rod; one end of the second supporting rod is provided with a return groove; the end part of the first supporting rod is inserted into the clip groove and can slide along the clip groove; the other end of the second supporting rod is provided with a second gear; the flat plate penetrates out of the back face of the mounting plate and is provided with a second clamping block; the second clamping block is embedded with the second gear.

The positions of the first supporting rod and the second supporting rod are fixed through the matching of the second clamping block and the second gear, so that the supporting column is assisted to support the mounting plate backwards; when the angle of the display screen is adjusted, the second clamping block is separated from the second gear along with the upward movement of the locking bar, the second supporting rod rotates along with the rotation of the display screen, the first supporting rod moves along with the second supporting rod, and one end of the first supporting rod moves in the clip groove to adapt to the position change of the second supporting rod; after the angle adjustment is completed, the second clamping block is re-engaged with the second gear to limit the rotation of the second supporting rod, and the position of the first supporting rod is fixed along with the second clamping block so as to continue to assist the supporting rod to fix the mounting plate.

Further, the top of the mounting plate is rotatably connected with a crawler belt; a second motor is fixed on the back of the mounting plate; the second motor is used for driving the crawler belt to rotate; a first connecting block is fixed on the track; the bottom of the mounting plate is provided with a sliding groove; a second connecting block is connected in the sliding groove in a sliding manner; an atomizing pipe is fixed between the first connecting block and the second connecting block; a brush plate is rotatably connected between the first connecting block and the second connecting block; the spraying pipe is positioned on one side of the brush plate; the spray pipe is provided with a spray nozzle; the spray nozzle is obliquely arranged; a liquid supply tank is fixed at the bottom of the workbench; the spraying pipe is communicated with the liquid supply tank through a hose; the bottom of the brush plate is provided with a round rod; the round rod is inserted into the second connecting block; the top of the brush plate is provided with a cross groove; a connecting rod is inserted in the first connecting block; the bottom of the connecting rod is provided with a cross rod; the cross rod is inserted into the cross groove.

By arranging the brush plate, when impurities such as dust and the like are accumulated on the surface of the display screen, the second motor drives the track to move, so that the first connecting block drives the brush plate and the second connecting block to move, the brush plate falls on the surface of the display screen, and the display screen is cleaned; during the moving process of the brush plate, alcohol or other liquid capable of cleaning the display screen is stored in the liquid supply tank, is conveyed into the spray pipe through the hose, forms spray from the spray opening and then is sprayed onto the display screen and the brush plate, so that the cleaning effect of the brush plate is improved, and the display effect of the display screen is ensured; the brush plate is fixed between the first connecting block and the second connecting block through the matching of the cross rod and the cross groove and the matching of the round rod and the second connecting block; after the connecting rod is lifted up to enable the cross rod to be separated from the cross groove, the round rod is lifted up to enable the round rod to be separated from the second connecting block, the brush plate can be taken down, and dirty brush plates are convenient to replace or clean.

Further, a torsion spring is arranged between the connecting rod and the first connecting block; the top of the connecting rod is provided with a rotating rod; a push block is arranged on one side of the mounting plate; the push block can be contacted with the rotating rod; the bottom of the rotating rod is provided with an arc-shaped groove; the first connecting block is connected with a stop lever in a sliding manner; the top of the stop lever is inserted into the arc-shaped groove and can slide along the arc-shaped groove; a third spring is fixed between the bottom of the stop lever and the first connecting block; a pressing block is arranged in the middle of the stop lever; the pressing block penetrates out of the first connecting block; a wedge-shaped block is arranged on the other side of the mounting plate; the wedge-shaped block falls above the pressing block.

When the brush plate moves from one side of the display screen to the other side, the push block is in contact with the rotating rod and enables the rotating rod to rotate, the cross block drives the brush plate to turn, the stop rod slides to the end part relative to the arc-shaped groove, and then the stop rod is driven by the third spring to move upwards to abut against one side of the rotating rod, so that one side of the brush plate, which is far away from the spray pipe, is in contact with the display screen in the return reset process, so that the liquid remained on the surface of the display screen is cleaned by the drier side of the brush plate, and the cleaning effect is improved; when the brush plate is reset, the wedge-shaped block is gradually contacted with and extrudes the pressing block, the stop lever moves downwards along with the wedge-shaped block, the connecting rod rotates to reset under the action of the torsional spring, and the stop lever is inserted into the arc-shaped groove again to prepare for next cleaning.

In conclusion, the utility model can effectively utilize the display to display and release the website construction information, is convenient to display the drawing board with the related information on the turntable according to the requirement and has good use effect; the drawing board is convenient to replace through the cooperation of the wedge-shaped strips and the slots, and information needing to be displayed is convenient to adjust.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Figure 2 is an isometric cross-sectional view of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is an exploded view of the display board of fig. 2.

Fig. 5 is a schematic structural diagram of the display in fig. 1.

Fig. 6 is a partially enlarged view of a portion B in fig. 5.

Fig. 7 is an isometric cross-sectional view of the display of fig. 1.

Fig. 8 is a partially enlarged view of a portion C in fig. 7.

FIG. 9 is a partial enlarged view of portion D of FIG. 7

Fig. 10 is a schematic structural diagram of the first latch in fig. 8.

Fig. 11 is a schematic view of the structure of the spray pipe of fig. 7.

Fig. 12 is a schematic view of the structure of the brush plate of fig. 7.

Fig. 13 is a schematic structural view of the connecting rod of fig. 9.

Fig. 14 is a schematic view of the stopper rod of fig. 9.

Detailed Description

In order to make the technical solutions of the present invention better understood, 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.

As shown in fig. 1 to 14, a website construction information display and release device includes a workbench 1, a turntable 2, a housing 3, and a display 4; the bottom of the rotary table 2 is provided with a spherical hinge groove 21, the spherical hinge groove 21 is an annular groove with a circular cross section, a plurality of balls 22 slide in the spherical hinge groove, and the bottom of each ball 22 falls on the workbench 1, so that the rotary table 2 is rotationally connected with the workbench 1; the turntable 2 is positioned inside the housing 3; the whole housing 3 is made of transparent acrylic plate material, and iron plates are fixed between the two sides and the workbench 1; the number of the displays 4 is two, and the displays are respectively arranged on the iron plates at two sides of the housing 3; the bottom of the working table 1 is provided with a power chamber 11, and a first motor 12 is fixed in the power chamber 11. A main shaft of the first motor 12 is connected with the rotary table 2 to drive the rotary table 2 to rotate; the rotary table 2 is provided with a display plate 5; the display board 5 comprises a vertical board 51 arranged on the turntable 2 and a drawing board 52 arranged on the vertical board 51; a door panel 23 is rotatably connected to the housing 3, so that the drawing board 52 can be taken out from the housing 3 for replacement; a plurality of T-shaped grooves 511 are formed in the surface of the vertical plate 51 from top to bottom, a plurality of T-shaped strips 521 are formed on the inner side of the drawing board 52 from top to bottom, and the T-shaped strips 521 are inserted into the T-shaped grooves 511 so that the drawing board 52 can be mounted on the vertical plate 51; a first baffle 512 is arranged at one end of the vertical plate 51, a second baffle 522 is arranged at one end of the drawing board 52 far away from the first baffle 512, and the T-shaped block and the T-shaped groove 511 are positioned between the first baffle 512 and the second baffle 522; a wedge-shaped strip 513 is connected to the top of the other end of the vertical plate 51 in a sliding manner, and a first spring 514 is fixed between the wedge-shaped strip 513 and the vertical plate 51; one side of the wedge-shaped strip 513 is provided with a square block 515, the square block 515 penetrates out of the vertical plate 51, and the wedge-shaped strip 513 can move up and down by pushing the square block 515; the second stopper 522 has a slot 523 at the top, and the wedge 513 is inserted into the slot 523 to limit the sliding of the drawing board 52 along the length direction of the T-shaped slot 511.

Furthermore, four corners of the bottom of the workbench 1 are respectively provided with support legs 13, and the support legs 13 are rotatably connected with pulleys 14; an electric push rod 15 is fixed in the power chamber 11, an anti-skid pad 16 is fixed at the movable end of the electric push rod 15, and the electric push rod 15 can drive the anti-skid pad 16 to move up and down; the non-slip mat 16 is provided with a cavity 17 inside and a plurality of rubber strips 18 at the bottom.

Further, the display 4 includes a display screen 41, a mounting plate 42, a support column 43; the display 4 is fixed on the mounting plate 42 in a conventional threaded connection, which is not described herein; one end of the supporting column 43 is fixed on the housing 3, and the other end is hinged with the mounting plate 42; one end of the supporting column 43 close to the mounting plate 42 is provided with a first gear 431; a clamping groove 421 is formed in the back surface of the mounting plate 42, a first clamping block 44 is connected in the clamping groove 421 in a sliding mode, and one end of the first clamping block 44 is embedded into the first gear 431; a plurality of elastic ropes 441 are fixed between the first fixture block 44 and the slot 421, and the elastic ropes 441 can pull the first fixture block 44 to slide in the slot 421; the other end of the first latch 44 is provided with a first inclined plate 442, and one end of the first inclined plate 442 is inclined; the bottom of the clamping groove 421 is provided with a through groove 422, the inside of the through groove 422 is inserted with the locking strip 45, the bottom of the locking strip 45 penetrates out of the through groove 422, the top of the locking strip is inserted into the clamping groove 421 and is provided with a second inclined plate 451, and the end part of the second inclined plate 451 inclines to abut against the first inclined plate 442 and can push the first inclined plate 442 to slide; a flat plate 452 is disposed in the middle of the locking bar 45, and a plurality of second springs 453 are fixed between the flat plate 452 and the through groove 422.

Further, a first supporting rod 432 is hinged below the supporting column 43; a second support rod 46 is hinged on the mounting plate 42, one end of the second support rod 46 is provided with a circular groove 461, and the end of the first support rod 432 is inserted into the circular groove 461 and can slide along the circular groove 461; the other end of the second support rod 46 is provided with a second gear 462; one end of the plate 452 extends out of the back surface of the mounting plate 42 and is provided with a second latch 454, and the second latch 454 is engaged with the second gear 462.

Further, the top of the mounting plate 42 is rotatably connected with a crawler belt 47; a second motor 48 is fixed at the back of the mounting plate 42, and the second motor 48 is used for driving the crawler belt 47 to rotate; a first connecting block 49 is fixed on the crawler 47; the bottom of the mounting plate 42 is provided with a sliding groove 423, and the sliding groove 423 is connected with the second connecting block 40 in a sliding way; an atomizing pipe 6 is fixed between the first connecting block 49 and the second connecting block 40; the brush plate 7 is rotatably connected between the first connecting block 49 and the second connecting block 40, the spray pipe 6 is positioned on one side of the brush plate 7, the spray pipe 6 is provided with a spray opening 61, and the spray opening 61 is provided with a fine opening and is obliquely arranged along the direction close to the brush plate 7; a liquid supply tank 10 is fixed at the bottom of the workbench 1, the liquid supply tank 10 is formed by combining a conventional tank body and a water pump and is used for supplying cleaning liquid into the spray pipe 6, and the spray pipe 6 is connected with the liquid supply tank 10 through a hose 62; the bottom of the brush plate 7 is provided with a round rod 71, and the round rod 71 is inserted into the second connecting block 40; the top of the brush plate 7 is provided with a cross groove 72; the first connecting block 49 is inserted with the connecting rod 8, the bottom of the connecting rod 8 is provided with a cross rod 81, and the cross rod 81 is inserted into the cross groove 72 to install the brush plate 7 between the first connecting block 49 and the second connecting block 40.

Further, a torsion spring 82 is installed between the connecting rod 8 and the first connecting block 49, a rotating rod 83 is arranged at the top of the connecting rod 8, and the torsion spring 82 can pull the rotating rod 83 to rotate; a push block 424 is arranged on one side of the mounting plate 42, and the push block 424 can be contacted with the rotating rod 83; the bottom of the rotating rod 83 is provided with an arc-shaped groove 84; the first connecting block 49 is connected with a stop lever 9 in a sliding way, and the top of the stop lever 9 is inserted into the arc-shaped groove 84 and can slide along the arc-shaped groove 84; a third spring 91 is fixed between the bottom of the stop lever 9 and the first connecting block 49; a pressing block 92 is arranged in the middle of the stop rod 9, the third spring 91 is positioned below the pressing block 92, and one end of the pressing block 92 penetrates out of the first connecting block 49; the other side of the mounting plate 42 is provided with a wedge block 425, and one end of the wedge block 425 inclines and falls above the pressing block 92.

Claims

1. A website construction information display and release device comprises a workbench (1), a rotary table (2) rotatably connected to the workbench (1), a housing (3) used for separating the rotary table (2) from the outside, and two displays (4) symmetrically fixed outside the housing (3); the method is characterized in that: a power chamber (11) is arranged at the bottom of the workbench (1); a first motor (12) is fixed in the power chamber (11); the main shaft of the first motor (12) is connected with the rotary table (2); the bottom of the rotary table (2) is provided with a spherical hinge groove (21); a plurality of balls (22) are connected in the spherical hinge groove (21) in a sliding manner; the ball (22) is in contact with the workbench (1); a door plate (23) is rotatably connected to the housing (3); a display board (5) is arranged on the rotary table (2); the display board (5) comprises a vertical board (51) arranged on the rotary table (2) and a drawing board (52) arranged on the vertical board (51); a plurality of T-shaped grooves (511) are formed in the vertical plate (51); one end of the vertical plate (51) is provided with a first baffle (512); the drawing board (52) is abutted against the first baffle (512); the top of the other end of the vertical plate (51) is connected with a wedge-shaped strip (513) in a sliding manner; a first spring (514) is fixed between the wedge-shaped strip (513) and the vertical plate (51); a square block (515) is arranged on one side of the wedge-shaped strip (513); the square block (515) penetrates out of the vertical plate (51); a plurality of T-shaped strips (521) are arranged on the inner side of the drawing board (52); the T-shaped strip (521) is inserted into the T-shaped groove (511); a second baffle (522) is arranged at one end, far away from the first baffle (512), of the drawing board (52); the second baffle (522) is abutted against the vertical plate (51); the top of the second baffle (522) is provided with a slot (523); the wedge-shaped strip (513) is inserted into the slot (523).

2. The website construction information display and release device according to claim 1, wherein: the bottom of the workbench (1) is provided with a plurality of support legs (13); the supporting legs (13) are rotatably connected with pulleys (14); an electric push rod (15) is also fixed in the power chamber (11); the bottom of the electric push rod (15) is fixed with a non-slip mat (16); a cavity (17) is arranged in the anti-skid pad (16); the bottom of the non-slip mat (16) is provided with a plurality of rubber strips (18).

3. The website construction information display and release device according to claim 1, wherein: the display (4) comprises a display screen (41), a mounting plate (42) for fixing the display screen (41), and a support column (43); one end of the supporting column (43) is fixed on the housing (3); the other end of the supporting column (43) is hinged with the mounting plate (42); a first gear (431) is arranged on the supporting column (43); a clamping groove (421) is formed in the back of the mounting plate (42); a first clamping block (44) is connected in the clamping groove (421) in a sliding manner; one end of the first clamping block (44) is embedded with the first gear (431); a plurality of elastic ropes (441) are fixed between the first fixture block (44) and the fixture groove (421); a first inclined plate (442) is arranged at the other end of the first clamping block (44); the bottom of the clamping groove (421) is provided with a through groove (422); a locking strip (45) is inserted into the through groove (422); the bottom of the locking bar (45) penetrates through the through groove (422); the top of the locking bar (45) is inserted into the clamping groove (421) and is provided with a second inclined plate (451); the first inclined plate (442) abuts against the second inclined plate (451); a flat plate (452) is arranged in the middle of the locking bar (45); a plurality of second springs (453) are fixed between the flat plate (452) and the through groove (422).

4. The website construction information display and release device according to claim 3, wherein: a first supporting rod (432) is rotatably connected to the supporting column (43); a second support rod (46) is rotatably connected to the mounting plate (42); one end of the second supporting rod (46) is provided with a return groove (461); the end part of the first supporting rod (432) is inserted into the clip-shaped groove (461) and can slide along the clip-shaped groove (461); a second gear (462) is arranged at the other end of the second supporting rod (46); the flat plate (452) penetrates out of the back surface of the mounting plate (42) and is provided with a second clamping block (454); the second fixture block (454) is embedded with the second gear (462).

5. The website construction information display and release device according to claim 3, wherein: the top of the mounting plate (42) is rotatably connected with a crawler belt (47); a second motor (48) is fixed on the back of the mounting plate (42); the second motor (48) is used for driving the crawler belt (47) to rotate; a first connecting block (49) is fixed on the crawler belt (47); the bottom of the mounting plate (42) is provided with a sliding groove (423); a second connecting block (40) is connected in the sliding groove (423) in a sliding manner; a spray pipe (6) is fixed between the first connecting block (49) and the second connecting block (40); a brush plate (7) is rotatably connected between the first connecting block (49) and the second connecting block (40); the spraying pipe (6) is positioned on one side of the brush plate (7); the spray pipe (6) is provided with a spray opening (61); the spray opening (61) is obliquely arranged; a liquid supply tank (10) is fixed at the bottom of the workbench (1); the spraying pipe (6) is communicated with the liquid supply tank (10) through a hose (62); a round rod (71) is arranged at the bottom of the brush plate (7); the round rod (71) is inserted into the second connecting block (40); the top of the brush plate (7) is provided with a cross groove (72); a connecting rod (8) is inserted in the first connecting block (49); the bottom of the connecting rod (8) is provided with a cross rod (81); the cross rod (81) is inserted into the cross groove (72).

6. The website construction information display and release device according to claim 5, wherein: a torsion spring (82) is arranged between the connecting rod (8) and the first connecting block (49); the top of the connecting rod (8) is provided with a rotating rod (83); a push block (424) is arranged on one side of the mounting plate (42); the push block (424) can be contacted with the rotating rod (83); the bottom of the rotating rod (83) is provided with an arc-shaped groove (84); the first connecting block (49) is connected with a stop lever (9) in a sliding way; the top of the stop lever (9) is inserted into the arc-shaped groove (84) and can slide along the arc-shaped groove (84); a third spring (91) is fixed between the bottom of the stop lever (9) and the first connecting block (49); a pressing block (92) is arranged in the middle of the stop lever (9); the pressing block (92) penetrates out of the first connecting block (49); a wedge-shaped block (425) is arranged on the other side of the mounting plate (42); the wedge block (425) falls over the press block (92).