CN217447258U

CN217447258U - Exhibition device

Info

Publication number: CN217447258U
Application number: CN202221492050.2U
Authority: CN
Inventors: 张潇杨
Original assignee: HENAN MUSEUM
Current assignee: HENAN MUSEUM
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-09-20
Anticipated expiration: 2032-06-15

Abstract

The utility model relates to an art show technical field, concretely relates to exhibition device, the fruit pick-up device comprises a frame body, framework one side is provided with the mounting panel, and the relative both sides of framework all are provided with translation mechanism, two translation mechanism one end all is provided with slewing mechanism, and two slewing mechanism are located the relative both sides of mounting panel respectively. The utility model discloses in, through installing the wall with the framework, then install the mounting panel with the exhibit on, when the mounting panel position is adjusted to needs, can pull the slide bar and drive the slider to the mounting panel tip, pull stay cord pulling slider again and drive adjacent mounting panel tip, thereby make the mounting panel can turn from top to bottom and adjust, then support the piece and block adjacent ring gear fixed mounting board position, and can promote to control the mounting panel, then two fixed connecting rods of screw in fastening bolt and mounting panel position, the angle of readjustment universal pipe and lamp body, thereby can adjust light angle and picture show angle, improve the bandwagon effect of picture.

Description

Exhibition device

Technical Field

The utility model relates to an art show technical field, concretely relates to exhibition device.

Background

The artwork is the crystal of the intellectual labor achievement of the artist, circulates in the art market as a special commodity, is mostly painting, is one of the most common types in the art variety class, and is inconvenient for an observer to adjust the painting for watching when the painting is displayed.

Also some angle regulation's technical scheme has appeared among the prior art, chinese patent as application number 202121425134.X discloses a multi-functional display device of work of art, including show frame and the setting can control work of art pivoted adjustment mechanism in show frame inboard, adjustment mechanism includes that the activity is pegged graft at the bull stick at show frame one side inner wall middle part, cup joints the gear of bull stick front end lateral wall and bonds the traceless subsides that are used for bonding fixed work of art in the gear front side, the below of gear is provided with the regulation pole, the part evenly cut integrated into one piece that the regulation pole is located the gear below has a plurality of wedges, and the wedge meshing is in the bottom of gear, the other end of adjusting the pole runs through the inside wall of show frame and extends to the outside of show frame, the inboard of show frame still is provided with the lighting mechanism who provides soft light irradiation.

Although this technical scheme can be convenient adjust the show angle of work, and shine light gentler make the detail of work of art watch more easily, however, this scheme angle of regulation when adjusting is limited, and the light angle of shining also is difficult to adjust, and the work of art, especially the painting, the sense of feeling of vwatching under different light and different angles all probably is different, and the user of service when appreciating the painting, the angle of perhaps difficult regulation light and painting, thereby influence the bandwagon effect of painting, it is comparatively inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to overcome foretell technical problem, the utility model aims to provide an exhibition device, through installing the wall with the framework, then install the mounting panel with the exhibit on, when the mounting panel position is adjusted to needs, can pull the slide bar and drive the slider to the mounting panel tip, pull stay cord pulling slider again and drive adjacent mounting panel tip, thereby make the mounting panel can turn from top to bottom and adjust, then support the piece and block adjacent ring gear fixed mounting board position, and can promote to control about the mounting panel, then two connecting rods of screw in fastening bolt fixation and mounting panel position, the angle of readjustment universal pipe and lamp body, thereby can adjust light angle and picture show angle, improve the bandwagon effect of picture.

The purpose of the utility model can be realized by the following technical scheme:

an exhibition device comprises a frame body, wherein a mounting plate is arranged on one side of the frame body, translation mechanisms are arranged on two opposite sides of the frame body, rotating mechanisms are arranged at one ends of the two translation mechanisms, the two rotating mechanisms are respectively positioned on two opposite sides of the mounting plate, an adjusting mechanism is arranged in the frame body, a universal pipe is fixedly connected to the top end of the frame body, and a lamp body is fixedly connected to one end of the universal pipe;

the rotating mechanism comprises a rotating block, one end of the rotating block is rotatably connected with an adjacent translation mechanism, one side of the rotating block is rotatably connected with a fixed block, the fixed block is fixedly connected with the adjacent side wall of the mounting plate, a toothed ring is fixedly sleeved on the outer side wall of the fixed block, one side of the rotating block is fixedly connected with a U-shaped block, the inner wall of the U-shaped block is fixedly connected with a rebound spring, one end of the rebound spring is fixedly connected with a supporting block, the supporting block is movably clamped with the toothed ring, a frame body is mounted on the wall surface, artworks such as art paintings and the like are mounted on the mounting plate through screws, then the mounting plate is pushed to use the two fixed blocks as shafts, the mounting plate can be turned over a certain angle up and down, the toothed ring is clamped with the supporting block to fix the angle, then the universal pipe can be adjusted to adjust the irradiation angle of the light on the lamp body, so that the display angle can be adjusted according to the requirements of an observer, and the light angle and the picture display angle can be adjusted at the same time, the display effect of the picture is improved.

Further, the method comprises the following steps: the translation mechanism comprises a connecting block, one end of the connecting block is fixedly connected with the adjacent side wall of the frame body, the other end of the connecting block is rotatably connected with a connecting rod, one end of the connecting rod is rotatably connected with one end of the adjacent rotating block, the other end of the connecting rod is fixedly connected with a split ring, and a fastening bolt is arranged between the other end of the connecting rod and the inner side wall of the split ring, a threaded hole is arranged on the top surface of the connecting block, the fastening bolt is screwed in the threaded hole, by rotating the connecting rods on the two translation mechanisms, the two connecting rods can drive the picture of the mounting plate to move left and right through the connected rotating blocks, a parallelogram is formed among the frame body, the mounting plate and the two connecting rods, thereby when various factors such as light irradiation need move the picture partial position, can move the picture through rotating the connecting rod, need not dismantle the framework to the user of being convenient for quick adjustment picture position.

Further, the method comprises the following steps: the adjusting mechanism comprises a sliding rod, two opposite inner side walls of the frame body are respectively provided with a sliding groove, the sliding rod is connected between the two sliding grooves in a sliding manner, the middle part of one side of the sliding rod is rotatably connected with a belt pulley, one end of the sliding rod is fixedly connected with a U-shaped frame, one end of the U-shaped frame is provided with a supporting plate, one side of the supporting plate is fixedly connected with an inserting rod, one end of the inserting rod penetrates through one end of the U-shaped frame and is connected with one end of the U-shaped frame in a sliding manner, one end of the inserting rod is positioned in the U-shaped frame and is fixedly connected with a top block, the outer side wall of the inserting rod is movably sleeved with a stretching spring, one end of the stretching spring is fixedly connected with one end of the U-shaped frame, the other end of the stretching spring is fixedly connected with one side of the supporting plate, one side of the mounting plate is provided with a guide groove, the inside of the guide groove is connected with a sliding block, one end of the sliding block is fixedly connected with a pull rope, one end of the pull rope bypasses the belt pulley and penetrates through the U-shaped frame, and the top block is movably clamped with the pull rope, the sliding block can be pulled to move towards the frame body direction by pulling the pull rope, so as to drive the mounting plate to rotate towards the frame body direction, the sliding block is slid to two ends of the guide groove, then the pull rope is pulled, so that the adjacent mounting plate end part can be driven to rotate towards the frame body direction by the sliding block, the mounting plate rotates by taking the two fixing blocks as axes when rotating, so that the other end of the mounting plate can retract when one end of the mounting plate tilts, so that the mounting plate can be driven to incline to carry out angle adjustment by pulling the pull rope when the sliding block is positioned at the two ends of the guide groove, the mounting plate is fixed by the two abutting blocks clamped adjacent toothed rings, then a user can pull the abutting plate, then the sliding rod is slid to the lowest end of the frame body, and then the hand is loosened, so that one end of the pull rope is abutted to the sliding rod by the ejecting block, thereby the end part of the pull rope can be kept positioned at the side part of the frame body, the user can pull the pull rope, and the direct contact between the user and the display product is reduced, the display article is prevented from being damaged.

Further, the method comprises the following steps: one end of the sliding rod is fixedly connected with a handle, so that a user can conveniently hold the handle to move the sliding rod.

Further, the method comprises the following steps: the draw-in groove has been seted up to handle one end, and the user of being convenient for utilizes the draw-in groove to block the stay cord, and the user of being convenient for can be with the stay cord winding on the handle after having used up the stay cord, and later with the terminal card of stay cord inside the draw-in groove.

Further, the method comprises the following steps: the cross section of the clamping groove is triangular, so that the pull rope can be embedded into the clamping groove to be clamped.

Further, the method comprises the following steps: handle one side is provided with the bull stick, and the bull stick middle part rotates with handle one side to be connected, bull stick one end fixedly connected with trapezoidal piece, and trapezoidal piece contacts with offset one side, and when the slide bar slides, the user can grip the handle and the bull stick other end, makes the bull stick other end turn to handle department, and bull stick one end drives trapezoidal piece jack-up offset part, makes the stay cord can remove between U type frame to make the user can singlehandedly grip the handle and through trapezoidal piece control kicking block conflict stay cord.

The utility model has the advantages that:

the frame body is arranged on the wall surface, artistic exhibitions such as a picture frame and the like are arranged on the mounting plate, when the position of the mounting plate needs to be adjusted, the slide rod can be pulled to drive the slide block to move to the position of any one end of the two ends of the mounting plate, then the pull rope is pulled, the pull rope pulls the slide block to drive any one end of the mounting plate to rotate towards the direction of the frame body, so that the mounting plate can be turned up and down for adjustment, the display picture can be rotated and adjusted in two directions, the irradiation effect of light on the picture is changed, the adjacent toothed ring fixed mounting plate is clamped by the abutting block, the mounting plate can be pushed to move left and right, then the positions of the two connecting rods are fixed by the fastening bolt, the picture of the mounting plate is moved left and right, then the angle of the universal pipe and the lamp body can be adjusted, the display angle can be adjusted according to the requirements of an observer, and the light angle and the picture display angle can be adjusted at the same time, the display effect of the picture is improved.

Drawings

The present invention will be further described with reference to the accompanying drawings.

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

fig. 2 is a schematic structural view of a rotating mechanism and a translating mechanism in the present invention;

FIG. 3 is a partial enlarged view of the position A of the present invention;

FIG. 4 is a schematic structural view of an adjusting mechanism of the present invention;

FIG. 5 is a schematic view of the position relationship between the middle butt plate and the trapezoidal block of the present invention;

fig. 6 is a schematic structural view of the middle guide groove of the present invention.

In the figure: 100. a frame body; 101. a chute; 110. a universal tube; 120. a lamp body; 200. mounting a plate; 201. a guide groove; 300. a rotating mechanism; 310. rotating the block; 320. a fixed block; 321. a toothed ring; 330. a U-shaped block; 340. a rebound spring; 341. a resisting block; 400. a translation mechanism; 410. connecting blocks; 420. a connecting rod; 430. an open ring; 440. fastening a bolt; 500. an adjustment mechanism; 510. a slide bar; 520. a belt pulley; 530. a slider; 531. pulling a rope; 540. a U-shaped frame; 550. a resisting plate; 551. inserting a rod; 552. a top block; 553. an extension spring; 560. a handle; 561. a card slot; 570. a rotating rod; 571. a trapezoidal block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-6, an exhibition device includes a frame 100, a mounting plate 200 is disposed on one side of the frame 100, translation mechanisms 400 are disposed on two opposite sides of the frame 100, a rotation mechanism 300 is disposed at one end of each of the translation mechanisms 400, the two rotation mechanisms 300 are respectively disposed on two opposite sides of the mounting plate 200, an adjusting mechanism 500 is disposed inside the frame 100, a universal tube 110 is fixedly connected to the top end of the frame 100, and a lamp body 120 is fixedly connected to one end of the universal tube 110;

the rotating mechanism 300 comprises a rotating block 310, one end of the rotating block 310 is rotatably connected with an adjacent translation mechanism 400, one side of the rotating block 310 is rotatably connected with a fixed block 320, the fixed block 320 is fixedly connected with the side wall of an adjacent mounting plate 200, the outer side wall of the fixed block 320 is fixedly sleeved with a toothed ring 321, one side of the rotating block 310 is fixedly connected with a U-shaped block 330, the inner wall of the U-shaped block 330 is fixedly connected with a rebound spring 340, one end of the rebound spring 340 is fixedly connected with a resisting block 341, the resisting block 341 is movably clamped with the toothed ring 321, the frame body 100 is mounted on the wall surface, artworks such as art paintings and the like are mounted on the mounting plate 200 through screws, then the mounting plate 200 is pushed to use the two fixed blocks 320 as shafts, so that the mounting plate 200 can be turned over up and down for a certain angle, then the toothed ring 321 is clamped by the resisting block 341 for fixing the angle, then the universal tube 110 can be adjusted to adjust the irradiation angle of the light on the lamp body 120, thereby adjusting the display angle according to the requirements of an observer, meanwhile, the lamplight angle and the picture display angle can be adjusted, and the picture display effect is improved.

The translation mechanism 400 comprises a connecting block 410, one end of the connecting block 410 is fixedly connected with the adjacent side wall of the frame body 100, the other end of the connecting block 410 is rotatably connected with a connecting rod 420, one end of the connecting rod 420 is rotatably connected with one end of the adjacent rotating block 310, the other end of the connecting rod 420 is fixedly connected with an open ring 430, a fastening bolt 440 is arranged between the other end of the connecting rod 420 and the inner side wall of the open ring 430, the top surface of the connecting block 410 is provided with a threaded hole, the fastening bolt 440 is screwed in the threaded hole, the two connecting rods 420 can drive the picture of the mounting plate 200 to move left and right through the connected rotating block 310 by rotating the connecting rods 420 on the two translation mechanisms 400, a parallelogram is formed among the frame body 100, the mounting plate 200 and the two connecting rods 420, so that when the picture needs to be moved partially due to various factors such as light irradiation, the picture can be moved by rotating the connecting rods 420, the frame body 100 does not need to be disassembled, thereby facilitating the user to quickly adjust the picture position.

The adjusting mechanism 500 comprises a sliding rod 510, two opposite inner side walls of the frame body 100 are both provided with sliding grooves 101, the sliding rod 510 is slidably connected between the two sliding grooves 101, the middle part of one side of the sliding rod 510 is rotatably connected with a belt pulley 520, one end of the sliding rod 510 is fixedly connected with a U-shaped frame 540, one end of the U-shaped frame 540 is provided with a supporting plate 550, one side of the supporting plate 550 is fixedly connected with an inserting rod 551, one end of the inserting rod 551 penetrates through one end of the U-shaped frame 540 and is slidably connected with one end of the U-shaped frame 540, one end of the inserting rod 551 is positioned in the U-shaped frame 540 and is fixedly connected with a top block 552, the outer side wall of the inserting rod 551 is movably sleeved with a tension spring 553, one end of the tension spring 553 is fixedly connected with one end of the U-shaped frame 540, the other end of the tension spring 553 is fixedly connected with one side of the supporting plate 550, one side of the mounting plate 200 is provided with a guide groove 201, a sliding block 530 is slidably connected with a pull rope 531, one end of the slide block 530 is fixedly connected with a pull rope 531, and one end of the pull rope 531 winds around the belt pulley 520 and penetrates through the U-shaped frame 540, the top block 552 is movably clamped with the pull rope 531, the slide block 530 can be pulled to move towards the frame body 100 by pulling the pull rope 531, so as to drive the mounting plate 200 to rotate towards the frame body 100, the slide block 530 slides to the two ends of the guide groove 201, then the pull rope 531 is pulled, so as to drive the adjacent end part of the mounting plate 200 to rotate towards the frame body 100 through the slide block 530, the mounting plate 200 rotates by taking the two fixing blocks 320 as an axis when rotating, so that one end of the mounting plate 200 can retract when tilting, so that the slide block 530 is positioned at the two ends of the guide groove 201, the pull rope 531 can drive the mounting plate 200 to incline for angle adjustment, the mounting plate 200 is fixed by the two abutting blocks 341 clamped with the adjacent toothed rings 321, then a user can pull the abutting plate 550 up, slide the slide rod 510 to the lowest end of the frame body 100, and release the hand, so that one end of the pull rope 531 is abutted to the slide rod 510 by the top block 552, thereby can keep stay cord 531 tip to be located the framework 100 lateral part, the user of being convenient for draws stay cord 531 to can avoid personnel direct contact to mounting panel 200 through stay cord 531 pulling mounting panel 200, reduce the direct contact of user of being in contact with the show article, avoid damaging the show article.

One end of the sliding rod 510 is fixedly connected with a handle 560, so that a user can conveniently hold the handle 560 to move the sliding rod 510; a clamping groove 561 is formed in one end of the handle 560, so that a user can conveniently clamp the pull rope 531 through the clamping groove 561, the user can conveniently wind the pull rope 531 on the handle 560 after using the pull rope 531, and then clamp the tail end of the pull rope 531 in the clamping groove 561; the cross section of the clamping groove 561 is triangular, so that the pull rope 531 can be embedded into the clamping groove 561 to be clamped; the rotating rod 570 is arranged on one side of the handle 560, the middle of the rotating rod 570 is rotatably connected with one side of the handle 560, one end of the rotating rod 570 is fixedly connected with the trapezoidal block 571, the trapezoidal block 571 is contacted with one side of the abutting plate 550, when the sliding rod 510 slides, a user can hold the handle 560 and the other end of the rotating rod 570, so that the other end of the rotating rod 570 is rotated to the handle 560, one end of the rotating rod 570 drives the trapezoidal block 571 to jack up the abutting plate 550, the pull rope 531 can move between the U-shaped frames 540, and the user can hold the handle 560 with one hand and control the jacking block 552 to abut against the pull rope 531 through the trapezoidal block 571.

The working principle is as follows: when the display device is used, firstly, the frame body 100 is installed on a wall surface through screws, then, a display product is installed on the installation plate 200, when the transverse position of the display product needs to be adjusted, a user can hold any one of the connecting rods 420 by hand and pull the connecting rod 420 to rotate, so that one connecting rod 420 drives the installation plate 200 to rotate transversely, and the other connecting rod 420 is pulled by the installation plate 200 to rotate synchronously, and then after the adjustment is finished, two fastening bolts 440 can be screwed into threaded holes in the two connecting blocks 410, so that the fastening bolts 440 abut against the adjacent split rings 430, and the positions of the two connecting rods 420 are fixed;

when the mounting plate 200 needs to be adjusted to rotate up and down, the handle 560 is held by a hand, the other end of the rotating rod 570 is simultaneously and loosely held by the hand, the other end of the rotating rod 570 rotates towards the handle 560, the trapezoidal block 571 at one end of the rotating rod 570 jacks up the part of the abutting plate 550, the pulling rope 531 can move between the U-shaped frames 540, then the sliding rod 510 is driven to slide by the sliding handle 560, when the sliding rod slides to the top end part of the mounting plate 200, the pulling rope 531 is pulled by the other hand, the pulling rope 531 drives the sliding block 530 to move upwards, at the moment, the toothed rings 321 on the fixing blocks 320 at two ends of the mounting plate 200 are abutted by the adjacent abutting blocks 341 to be difficult to rotate, then the pulling rope 531 is continuously pulled, the top end of the mounting plate 200 rotates towards the frame body 100, the two fixing blocks 320 are driven to rotate synchronously when the mounting plate 200 rotates, the two toothed rings 321 synchronously rotate with the two fixing blocks 320 and push the adjacent abutting blocks 341 open to move to the adjacent U-shaped blocks 330, after the mounting plate 200 stops, the two abutting blocks 341 are reset and clamped between the gear teeth of the adjacent gear ring 321 due to the reset elasticity of the adjacent rebound springs 340, so that the angle of the mounting plate 200 is stabilized;

then, the sliding rod 510 can slide to the bottom end of the mounting plate 200 through the handle 560, then the pulling rope 531 is pulled to pull the sliding block 530 to the bottom end of the guiding groove 201, then the pulling rope 531 is continuously pulled to drive the sliding block 530 and the mounting plate 200 to rotate towards the frame body 100, so that the mounting plate 200 can rotate in the opposite direction, after the position of the artwork is adjusted, the position of the universal tube 110 is adjusted according to the requirement of the artwork, the irradiation angle of the lamp body 120 is adjusted, and the artwork can be irradiated.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only, and various modifications, additions and substitutions as described for the specific embodiments described herein may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.

Claims

1. The exhibition device comprises a frame body (100) and is characterized in that a mounting plate (200) is arranged on one side of the frame body (100), translation mechanisms (400) are arranged on two opposite sides of the frame body (100), rotating mechanisms (300) are arranged at one ends of the two translation mechanisms (400), the two rotating mechanisms (300) are respectively located on two opposite sides of the mounting plate (200), an adjusting mechanism (500) is arranged inside the frame body (100), a universal pipe (110) is fixedly connected to the top end of the frame body (100), and a lamp body (120) is fixedly connected to one end of the universal pipe (110);

slewing mechanism (300) are including changeing piece (310), and change piece (310) one end and adjacent translation mechanism (400) and rotate and be connected, change piece (310) one side and rotate and be connected with fixed block (320), and fixed block (320) and adjacent mounting panel (200) lateral wall fixed connection, the fixed cover of fixed block (320) lateral wall has cup jointed ring gear (321), change piece (310) one side fixedly connected with U type piece (330), and U type piece (330) inner wall fixedly connected with resilience spring (340), resilience spring (340) one end fixedly connected with supports piece (341), and supports piece (341) and ring gear (321) activity joint.

2. The exhibition apparatus of claim 1, wherein the translation mechanism (400) comprises a connecting block (410), one end of the connecting block (410) is fixedly connected with the adjacent side wall of the frame body (100), the other end of the connecting block (410) is rotatably connected with a connecting rod (420), one end of the connecting rod (420) is rotatably connected with one end of the adjacent rotating block (310), the other end of the connecting rod (420) is fixedly connected with a split ring (430), a fastening bolt (440) is arranged between the other end of the connecting rod (420) and the inner side wall of the split ring (430), a threaded hole is formed in the top surface of the connecting block (410), and the fastening bolt (440) is screwed into the threaded hole.

3. The exhibition apparatus of claim 1, wherein the adjusting mechanism (500) comprises a sliding rod (510), the frame (100) has two opposing inner sidewalls with sliding grooves (101), the sliding rod (510) is slidably connected between the two sliding grooves (101), the middle of one side of the sliding rod (510) is rotatably connected with a belt pulley (520), one end of the sliding rod (510) is fixedly connected with a U-shaped frame (540), one end of the U-shaped frame (540) is provided with a resisting plate (550), one side of the resisting plate (550) is fixedly connected with an inserting rod (551), one end of the inserting rod (551) penetrates through one end of the U-shaped frame (540) and is slidably connected with one end of the U-shaped frame (540), one end of the inserting rod (551) is located inside the U-shaped frame (540) and is fixedly connected with a top block (552), the outer sidewall of the inserting rod (551) is movably sleeved with a tension spring (553), and one end of the tension spring (553) is fixedly connected with one end of the U-shaped frame (540), The other end and support board (550) one side fixed connection, mounting panel (200) one side has been seted up guide way (201) and has been gone, and the inside sliding connection of guide way (201) has slider (530), slider (530) one end fixedly connected with stay cord (531), and inside pulley (520) and run through U type frame (540) are walked around to stay cord (531) one end, kicking block (552) and stay cord (531) activity joint.

4. A display device as claimed in claim 3, characterised in that a handle (560) is fixedly attached to one end of the slide bar (510).

5. The exhibition device of claim 4, wherein one end of the handle (560) is provided with a slot (561).

6. An exhibition device according to claim 5, characterized in that the slots (561) are triangular in cross-section.

7. The exhibition apparatus according to claim 4, wherein a rotating rod (570) is disposed at one side of the handle (560), and the middle portion of the rotating rod (570) is rotatably connected to one side of the handle (560), one end of the rotating rod (570) is fixedly connected to a trapezoidal block (571), and the trapezoidal block (571) contacts one side of the butt plate (550).