Anti-interference visible light audio and video transmission device

Abstract

The invention belongs to the technical field of anti-interference visible light audio and video transmission, and particularly relates to an anti-interference visible light audio and video transmission device which comprises an anti-interference visible light audio and video transmission equipment body and a storage plate installed on the bottom face of the anti-interference visible light audio and video transmission equipment body. The anti-interference visible light audio and video transmission equipment further comprises a supporting assembly installed on the surface of the storage plate, and the supporting assembly comprises a plurality of connecting plates arranged in the storage plate, a foot supporting frame used for supporting the anti-interference visible light audio and video transmission equipment body, a first movable rod, a buckle plate, an L-shaped plate, a pressing plate and a second movable rod. According to the anti-interference visible light audio and video transmission equipment, the anti-interference visible light audio and video transmission equipment body can be placed and supported, the anti-interference visible light audio and video transmission equipment body can be stored when not used, and the height of the anti-interference visible light audio and video transmission equipment body can be adjusted; therefore, signals of different heights of the anti-interference visible light audio and video transmission equipment body are adapted.

Description

Technical Field

[0001] The present invention belongs to the technical field of anti-interference visible light audio and video transmission, and in particular relates to an anti-interference visible light audio and video transmission device. Background Art

[0002] Video transmission is the wireless transmission of video signals from the signal source to a remote HDTV or HD projector. Video transmission technology is gradually approaching people's daily life, and video transmission equipment needs to use video transmission terminals when working;

[0003] Audio and video transmission is the wireless transmission of audio and video signals from the signal source to a remote HDTV or HD projector. Audio and video transmission technology is gradually approaching people's daily life, and audio and video transmission equipment needs to use audio and video transmission terminals when working;

[0004] The anti-interference visible light audio and video transmission equipment uses visible light to transmit video data, avoiding the interference of radio signals and electromagnetic fields in traditional wireless communications, reducing interference during video data transmission, and improving the security of video data;

[0005] However, when the existing anti-interference visible light audio and video transmission equipment is in use, the placement height of the anti-interference visible light audio and video transmission equipment will have a certain impact on the video transmission signal. Therefore, it is necessary to adjust the corresponding height of the transmission equipment according to the strength of the signal. Since the existing anti-interference visible light audio and video transmission equipment needs to be raised with the help of other objects, the adjustment process is relatively inconvenient, which affects the overall progress of the placement of the anti-interference visible light audio and video transmission equipment.

[0006] In order to solve the above problems, the present application proposes an interference-resistant visible light audio and video transmission device. Summary of the invention

[0007] To solve the problems raised in the above background technology. The present invention provides an anti-interference visible light audio and video transmission device, which can place and support the anti-interference visible light audio and video transmission device body, and can store the anti-interference visible light audio and video transmission device body when not in use, and adjust the height of the anti-interference visible light audio and video transmission device body, so as to adapt to signals of different heights of the anti-interference visible light audio and video transmission device body.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: an anti-interference visible light audio and video transmission device, comprising an anti-interference visible light audio and video transmission device body and a storage plate installed on the bottom surface of the anti-interference visible light audio and video transmission device body;

[0009] It also includes a support assembly installed on the surface of the storage board, the support assembly includes a plurality of connecting plates arranged inside the storage board and a foot support frame, a movable rod 1, a buckle plate, an L-shaped plate, a pressure plate and a movable rod 2 for supporting the body of the anti-interference visible light audio and video transmission device;

[0010] The support also includes a positioning assembly installed on the surface of the foot support, the positioning assembly includes an arc block installed on one side of the foot support, a spherical rod slidably connected to a through hole provided on the surface of the connecting plate, and a positioning groove for positioning the foot support;

[0011] It also includes an extension component installed inside the foot support frame, which includes an extension plate slidably connected to the inside of the foot support frame, an adjustment plate symmetrically installed on the surface of the foot support frame, and a positioning plate and a guide rod for positioning the extension plate.

[0012] As a preferred anti-interference visible light audio and video transmission device of the present invention, a movable rod one is rotatably connected in a groove opened on the surface of the connecting plate, a foot support is installed on the surface of the movable rod one, a snap plate is symmetrically installed on one side surface of the foot support, a movable rod two is rotatably connected in a rectangular groove opened on the surface of the connecting plate, an L-shaped plate is installed on the surface of the movable rod two, the L-shaped plate is snapped into the inside of the snap plate, a pressure plate is installed on one side surface of the L-shaped plate, and the pressure plate is an inclined structure connected to the L-shaped plate.

[0013] As a preferred anti-interference visible light audio and video transmission device of the present invention, a torsion spring is sleeved on the surface of the movable rod, one end of the torsion spring is connected to the connecting plate, and the other end of the torsion spring is connected to the foot support.

[0014] As a preferred anti-interference visible light audio and video transmission device of the present invention, a torsion spring 2 is sleeved on the surface of the movable rod 2, one end of the torsion spring 2 is connected to the connecting plate, and the other end of the torsion spring 2 is connected to the L-shaped plate.

[0015] As a preferred anti-interference visible light audio and video transmission device of the present invention, a moving bar is symmetrically installed on the bottom surface of the connecting plate, a moving groove matched with the moving bar is opened on the surface of the storage plate, the connecting plate and the storage plate are slidingly connected through the moving bar and the moving groove, a baffle is symmetrically arranged on the surface of the storage plate, a bolt 1 is slidably connected in the through hole opened on the surface of the baffle, one end of the bolt 1 passes through the baffle, and is threadedly connected in the threaded hole opened on the surface of the anti-interference visible light audio and video transmission equipment body.

[0016] As a preferred anti-interference visible light audio and video transmission device of the present invention, the surface of the foot support is provided with a positioning groove adapted to the spherical rod, the spherical rod is clamped inside the positioning groove, and the spherical rod is adapted to the arc block.

[0017] As a preferred anti-interference visible light audio and video transmission device of the present invention, a return spring 1 is sleeved on the surface of the spherical rod, one end of the return spring 1 is connected to the connecting plate, and the other end of the return spring 1 is connected to the spherical rod.

[0018] As a preferred anti-interference visible light audio and video transmission device of the present invention, a positioning plate is symmetrically installed on the surface of the extension plate, a guide rod is slidably connected in the through hole opened on the surface of the adjustment plate, one end of the guide rod passes through the adjustment plate and is connected to the positioning plate.

[0019] As a preferred anti-interference visible light audio and video transmission device of the present invention, a second return spring is sleeved on the surface of the guide rod, one end of the second return spring is connected to the guide rod, and the other end of the second return spring is connected to the adjustment plate.

[0020] As a preferred anti-interference visible light audio and video transmission device of the present invention, a mounting plate is installed on the surface of the adjustment plate, and a second bolt is slidably connected in a through hole opened on the surface of the mounting plate, one end of the second bolt passes through the mounting plate and is threadedly connected in a threaded hole opened on the surface of the guide rod, and the surface of the guide rod is provided with a plurality of threaded holes compatible with the second bolt.

[0021] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0022] 1. By setting the support assembly, the operator presses the pressure plate, and the pressure plate drives the L-shaped plate to move. The L-shaped plate rotates in the rectangular groove provided on the surface of the connecting plate through the movable rod 2. At this time, the L-shaped plate drives the torsion spring 2 to deform, and the torsion spring 2 can reset the moving position of the L-shaped plate. When the L-shaped plate is separated from the buckle plate on the surface of the foot support frame during the rotation, the foot support frame is not blocked, so that the torsion spring 1 drives the movable rod 1 to reset. At this time, the movable rod 1 rotates in the groove provided on the surface of the connecting plate, so that the foot support frame rotates from the horizontal position to the vertical position, thereby supporting the position of the anti-interference visible light audio and video transmission device body, so that the anti-interference visible light audio and video transmission device body can increase the overall height, and improve the strength of the signal received by the anti-interference visible light audio and video transmission device body;

[0023] 2. By setting a positioning component, when the foot support frame moves from a horizontal position to a vertical position, the foot support frame drives the arc block to squeeze the spherical rod in the through hole provided on the surface of the connecting plate. At this time, the spherical rod is squeezed by the arc block to slide inside the connecting plate. During the sliding process, the spherical rod drives the reset spring to deform. As the foot support frame continues to move, the arc block is separated from the spherical rod. At this time, the spherical rod is not squeezed at all. The reset spring drives the spherical rod to reset. At this time, the spherical rod is inserted into the positioning groove provided on the surface of the foot support frame, thereby positioning the vertical position of the foot support frame;

[0024] 3. By setting an extension component, when the placement height of the anti-interference visible light audio and video transmission device body is adjusted, the extension plate is pulled at this time, and the extension plate slides inside the foot support. During the movement, the extension plate drives the guide rod to slide in the through hole opened on the surface of the adjustment plate through the positioning plate. The guide rod and the adjustment plate can guide the moving position of the extension plate to avoid position displacement of the extension plate during the movement. At this time, the guide rod squeezes the reset spring 2 during the movement, causing the reset spring 2 to deform. The reset spring 2 can reset the position of the extension plate, thereby further improving the use effect of the device. When the height adjustment of the extension plate is completed, the bolt 2 inside the mounting plate is rotated at this time, so that the bolt 2 is threadedly connected to the threaded hole opened on the surface of the guide rod, thereby positioning the moving height of the extension plate. At this time, the extension plate can drive the anti-interference visible light audio and video transmission device body to adjust the height, thereby adapting to signals of different heights of the anti-interference visible light audio and video transmission device body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 It is a schematic diagram of the cross-sectional structure of the storage plate in the present invention;

[0028] Figure 3 It is a structural schematic diagram of the horizontal position of the foot support frame in the present invention;

[0029] Figure 4 It is a structural schematic diagram of the vertical position of the foot support frame in the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the foot support frame and the arc block in the present invention;

[0031] Figure 6It is a schematic diagram of the structure of the L-shaped plate and the pressing plate in the present invention;

[0032] Figure 7 It is a schematic diagram of the cross-sectional structure of the foot support frame in the present invention;

[0033] Figure 8 It is a schematic diagram of the structure of the extension plate and the mounting plate in the present invention.

[0034] In the figure:

[0035] 1. Anti-interference visible light audio and video transmission equipment body; 12. Storage board;

[0036] 2. Support assembly; 21. Connecting plate; 22. Foot support; 23. Active rod 1; 24. Snap plate; 25. L-shaped plate; 26. Press plate; 27. Active rod 2; 28. Torsion spring 1; 29. ​​Torsion spring 2; 210. Moving bar; 211. Baffle; 212. Bolt 1;

[0037] 3. Positioning assembly; 31. Arc block; 32. Spherical rod; 33. Positioning groove; 34. Return spring 1;

[0038] 4. Extension assembly; 41. Extension plate; 42. Adjustment plate; 43. Positioning plate; 44. Guide rod; 45. Return spring 2; 46. Mounting plate; 47. Bolt 2. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example: Figure 1-Figure 8 As shown, the present invention provides a technical solution, an anti-interference visible light audio and video transmission device, comprising an anti-interference visible light audio and video transmission device body 1 and a storage plate 12 installed on the bottom surface of the anti-interference visible light audio and video transmission device body 1;

[0041] It also includes a support assembly 2 installed on the surface of the storage plate 12, and the support assembly 2 includes a plurality of connecting plates 21 arranged inside the storage plate 12 and a foot support 22, a movable rod 1 23, a snap plate 24, an L-shaped plate 25, a pressure plate 26 and a movable rod 27 for supporting the anti-interference visible light audio and video transmission device body 1;

[0042] A movable rod 23 is rotatably connected in the groove opened on the surface of the connecting plate 21, a foot support frame 22 is installed on the surface of the movable rod 23, and a snap plate 24 is symmetrically installed on one side surface of the foot support frame 22. A movable rod 27 is rotatably connected in the rectangular groove opened on the surface of the connecting plate 21, and an L-shaped plate 25 is installed on the surface of the movable rod 27. The L-shaped plate 25 is snapped into the inside of the snap plate 24, and a pressure plate 26 is installed on one side surface of the L-shaped plate 25. The pressure plate 26 is an inclined structure connected to the L-shaped plate 25. A torsion spring 28 is sleeved on the surface of the movable rod 23, one end of the torsion spring 28 is connected to the connecting plate 21, and the other end of the torsion spring 28 is connected to the foot support frame 22. The movable rod The surface of the second 27 is sleeved with a torsion spring 29, one end of the torsion spring 29 is connected to the connecting plate 21, and the other end of the torsion spring 29 is connected to the L-shaped plate 25. The bottom surface of the connecting plate 21 is symmetrically installed with a moving bar 210, and the surface of the storage plate 12 is provided with a moving groove adapted to the moving bar 210. The connecting plate 21 and the storage plate 12 are slidably connected through the moving bar 210 and the moving groove. The surface of the storage plate 12 is symmetrically provided with a baffle 211, and a bolt 212 is slidably connected in the through hole opened on the surface of the baffle 211. One end of the bolt 212 penetrates the baffle 211 and is threadedly connected in the threaded hole opened on the surface of the anti-interference visible light audio and video transmission device body 1.

[0043] The support frame 22 further includes a positioning assembly 3 mounted on the surface of the support frame 22. The positioning assembly 3 includes an arc block 31 mounted on one side of the support frame 22, a spherical rod 32 slidably connected to a through hole on the surface of the connecting plate 21, and a positioning groove 33 for positioning the support frame 22.

[0044] A positioning groove 33 matched with the spherical rod 32 is formed on the surface of the foot support 22. The spherical rod 32 is clamped in the inside of the positioning groove 33. The spherical rod 32 is matched with the arc block 31. A return spring 34 is sleeved on the surface of the spherical rod 32. One end of the return spring 34 is connected to the connecting plate 21, and the other end of the return spring 34 is connected to the spherical rod 32.

[0045] The support frame 22 further includes an extension assembly 4 installed inside the support frame 22, the extension assembly 4 includes an extension plate 41 slidably connected inside the support frame 22, an adjustment plate 42 symmetrically installed on the surface of the support frame 22, and a positioning plate 43 and a guide rod 44 for positioning the extension plate 41;

[0046] A positioning plate 43 is symmetrically installed on the surface of the extension plate 41, and a guide rod 44 is slidably connected in a through hole opened on the surface of the adjustment plate 42, one end of the guide rod 44 passes through the adjustment plate 42 and is connected to the positioning plate 43, a return spring 2 45 is sleeved on the surface of the guide rod 44, one end of the return spring 2 45 is connected to the guide rod 44, and the other end of the return spring 2 45 is connected to the adjustment plate 42, a mounting plate 46 is installed on the surface of the adjustment plate 42, a bolt 2 47 is slidably connected in a through hole opened on the surface of the mounting plate 46, one end of the bolt 2 47 passes through the mounting plate 46 and is threadedly connected in a threaded hole opened on the surface of the guide rod 44, and a plurality of threaded holes matching the bolt 2 47 are opened on the surface of the guide rod 44.

[0047] The working principle and use process of the present invention are as follows: when the main body 1 of the anti-interference visible light audio and video transmission device is placed and supported, firstly, the bolt 212 in the through hole provided on the surface of the baffle 211 is rotated so that the bolt 212 is disengaged from the threaded hole provided on the surface of the anti-interference visible light audio and video transmission device main body 1, and then the baffle 211 is pulled so that the baffle 211 and the anti-interference visible light audio and video transmission device main body 1 are separated, and then the connecting plate 21 is pulled as a whole, and the moving bar 210 at the bottom of the connecting plate 21 slides in the moving groove provided on the surface of the storage plate 12, so that the connecting plate 21 is taken out as a whole, so that the anti-interference visible light audio and video transmission device main body 1 can be placed and supported, and the anti-interference visible light audio and video transmission device main body 1 can be stored when not in use;

[0048] At this time, the operator presses the pressing plate 26, and the pressing plate 26 drives the L-shaped plate 25 to move. The L-shaped plate 25 rotates in the rectangular groove provided on the surface of the connecting plate 21 through the movable rod 27. At this time, the L-shaped plate 25 drives the torsion spring 29 to deform, and the torsion spring 29 can reset the moving position of the L-shaped plate 25. When the L-shaped plate 25 is disengaged from the buckle plate 24 on the surface of the foot support frame 22 during the rotation, the foot support frame 22 is not blocked, so that the torsion spring 1 28 drives the movable rod 1 23 to reset. At this time, the movable rod 1 23 rotates in the groove provided on the surface of the connecting plate 21, so that the foot support frame 22 rotates from the horizontal position to the vertical position, thereby supporting the position of the anti-interference visible light audio and video transmission device body 1, so that the anti-interference visible light audio and video transmission device body 1 can increase the overall height, and improve the strength of the signal received by the anti-interference visible light audio and video transmission device body 1;

[0049] When the foot support 22 moves from the horizontal position to the vertical position, the foot support 22 drives the arc block 31 to squeeze the spherical rod 32 in the through hole on the surface of the connecting plate 21. At this time, the spherical rod 32 is squeezed by the arc block 31 and slides inside the connecting plate 21. The spherical rod 32 drives the reset spring 34 to deform during the sliding process. As the foot support 22 continues to move, the arc block 31 is separated from the spherical rod 32. At this time, the spherical rod 32 is not squeezed at all. The reset spring 34 drives the spherical rod 32 to reset. At this time, the spherical rod 32 is inserted into the positioning groove 33 on the surface of the foot support 22, thereby positioning the foot support 22 in the vertical position;

[0050] When the placement height of the anti-interference visible light audio and video transmission device body 1 is adjusted, the extension plate 41 is pulled at this time, and the extension plate 41 slides inside the foot support 22 at this time. During the movement, the extension plate 41 drives the guide rod 44 to slide in the through hole opened on the surface of the adjustment plate 42 through the positioning plate 43. The guide rod 44 and the adjustment plate 42 can guide the moving position of the extension plate 41 to avoid the position deviation of the extension plate 41 during the movement. At this time, the guide rod 44 squeezes the reset spring 45 during the movement, so that the reset spring 45 is deformed, and the reset spring 45 can reset the position of the extension plate 41, thereby further improving the use effect of the device. When the height adjustment of the extension plate 41 is completed, the bolt 47 inside the mounting plate 46 is rotated at this time, so that the bolt 47 is threadedly connected in the threaded hole opened on the surface of the guide rod 44, thereby positioning the moving height of the extension plate 41. At this time, the extension plate 41 can drive the anti-interference visible light audio and video transmission device body 1 to adjust the height, thereby adapting to signals of different heights of the anti-interference visible light audio and video transmission device body 1.

[0051] It should be noted that the anti-interference working process and principle of the anti-interference visible light audio and video transmission device body 1 in the device: using visible light to transmit video data avoids the interference of radio signals and electromagnetic fields in traditional wireless communications, reduces interference in the video data transmission process, and improves the security of video data. The camera in the video acquisition unit collects video data, and the optical transmission circuit converts the video data into an optical signal and transmits it through visible light. The optical receiving circuit of the monitoring unit wirelessly receives the video data transmitted by the optical transmission circuit, and transmits it to the main controller after being processed by the level conversion circuit. The main controller then stores the data in the data storage device, and can communicate data with the host computer through the communication circuit interface.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-interference visible light audio and video transmission device, comprising an anti-interference visible light audio and video transmission device body (1) and a storage plate (12) installed on the bottom surface of the anti-interference visible light audio and video transmission device body (1); Features: It also includes a support assembly (2) mounted on the surface of the storage plate (12), the support assembly (2) including a plurality of connection plates (21) arranged inside the storage plate (12) and a foot support frame (22), a movable rod 1 (23), a snap plate (24), an L-shaped plate (25), a pressure plate (26) and a movable rod 2 (27) for supporting the anti-interference visible light audio and video transmission device body (1); It also includes a positioning assembly (3) mounted on the surface of the foot support (22), the positioning assembly (3) including an arc block (31) mounted on one side of the foot support (22), a spherical rod (32) slidably connected to a through hole provided on the surface of the connecting plate (21), and a positioning groove (33) for positioning the foot support (22); The invention also comprises an extension assembly (4) installed inside the foot support frame (22), wherein the extension assembly (4) comprises an extension plate (41) slidably connected inside the foot support frame (22), an adjustment plate (42) symmetrically installed on the surface of the foot support frame (22), and a positioning plate (43) and a guide rod (44) for positioning the extension plate (41).

2. The anti-interference visible light audio and video transmission device according to claim 1, characterized in that: A movable rod 1 (23) is rotatably connected in a groove provided on the surface of the connecting plate (21), a foot support frame (22) is installed on the surface of the movable rod 1 (23), a snap plate (24) is symmetrically installed on one side surface of the foot support frame (22), a movable rod 2 (27) is rotatably connected in a rectangular groove provided on the surface of the connecting plate (21), an L-shaped plate (25) is installed on the surface of the movable rod 2 (27), the L-shaped plate (25) is snapped into the inside of the snap plate (24), a pressure plate (26) is installed on one side surface of the L-shaped plate (25), and the pressure plate (26) is an inclined structure connected to the L-shaped plate (25).

3. The anti-interference visible light audio and video transmission device according to claim 2, characterized in that: A torsion spring (28) is sleeved on the surface of the movable rod (23); one end of the torsion spring (28) is connected to the connecting plate (21); and the other end of the torsion spring (28) is connected to the foot support (22).

4. The anti-interference visible light audio and video transmission device according to claim 3, characterized in that: A torsion spring (29) is sleeved on the surface of the movable rod (27), one end of the torsion spring (29) is connected to the connecting plate (21), and the other end of the torsion spring (29) is connected to the L-shaped plate (25).

5. The anti-interference visible light audio and video transmission device according to claim 4, characterized in that: A moving bar (210) is symmetrically installed on the bottom surface of the connecting plate (21), and a moving groove matched with the moving bar (210) is opened on the surface of the receiving plate (12). The connecting plate (21) and the receiving plate (12) are slidably connected through the moving bar (210) and the moving groove. A baffle (211) is symmetrically arranged on the surface of the receiving plate (12), and a bolt (212) is slidably connected in a through hole opened on the surface of the baffle (211). One end of the bolt (212) passes through the baffle (211) and is threadedly connected in a threaded hole opened on the surface of the anti-interference visible light audio and video transmission device body (1).

6. The anti-interference visible light audio and video transmission device according to claim 5, characterized in that: A positioning groove (33) adapted to the spherical rod (32) is provided on the surface of the foot support frame (22); the spherical rod (32) is clamped inside the positioning groove (33); and the spherical rod (32) is adapted to the arc block (31).

7. The anti-interference visible light audio and video transmission device according to claim 6, characterized in that: A return spring (34) is sleeved on the surface of the spherical rod (32), one end of the return spring (34) is connected to the connecting plate (21), and the other end of the return spring (34) is connected to the spherical rod (32).

8. The anti-interference visible light audio and video transmission device according to claim 7, characterized in that: A positioning plate (43) is symmetrically mounted on the surface of the extension plate (41), a guide rod (44) is slidably connected in a through hole provided on the surface of the adjustment plate (42), one end of the guide rod (44) passes through the adjustment plate (42) and is connected to the positioning plate (43).

9. The anti-interference visible light audio and video transmission device according to claim 8, characterized in that: A second return spring (45) is sleeved on the surface of the guide rod (44), one end of the second return spring (45) is connected to the guide rod (44), and the other end of the second return spring (45) is connected to the adjustment plate (42).

10. The anti-interference visible light audio and video transmission device according to claim 9, characterized in that: A mounting plate (46) is mounted on the surface of the adjustment plate (42), a second bolt (47) is slidably connected in a through hole provided on the surface of the mounting plate (46), one end of the second bolt (47) passes through the mounting plate (46) and is threadedly connected in a threaded hole provided on the surface of the guide rod (44), and a plurality of threaded holes matching the second bolt (47) are provided on the surface of the guide rod (44).

Images