Horn support machining integrated device

Abstract

The horn support machining integrated device comprises a bottom plate, the upper side of the bottom plate is fixedly connected with a vertical rod, the upper end of the vertical rod is fixedly connected with a top plate, the upper side of the top plate is fixedly connected with a hydraulic cylinder, and the output end of the lower side of the hydraulic cylinder is fixedly connected with a lifting plate; a lifting plate is fixedly connected to the upper side of the bottom plate, a drilling machine is fixedly connected to the lower side of the lifting plate, two first guide plates are fixedly connected to the upper side of the bottom plate, first guide blocks are slidably connected to the outer sides of the first guide plates, a fixing plate is fixedly connected to the upper sides of the first guide blocks, and two second guide plates are fixedly connected to the upper side of the fixing plate. According to the horn support machining integrated device, through the arrangement of the bottom plate, the containing box, the sliding grooves, the sliding blocks, the clamping plates, the rotating plate, the lifting disc and the first electric push rod, the first electric push rod is conveniently controlled, the clamping plates in multiple directions are controlled to limit a horn support, the clamping and limiting effect is improved, and punching is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of speaker bracket processing, and in particular to an integrated speaker bracket processing device. Background Art

[0002] A speaker stand is a device used to fix and support the speaker. It ensures that the speaker is stably installed in a specific position to optimize sound propagation.

[0003] When processing the speaker bracket, it is necessary to drill holes on the base and mounting seat of the bracket to facilitate the installation of the bracket and the speaker. When drilling, the bracket needs to be placed on the device and clamped and limited to ensure that the bracket is stable during drilling. When limiting the bracket, only the two sides of the workpiece are limited, and the limiting effect of the bracket is not good. In addition, when limiting brackets with different signals, different signal fixtures need to be used for clamping, and the applicability of the device is not high. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides an integrated device for processing a speaker bracket, which solves the problem of poor clamping and limiting effect on the bracket.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A speaker bracket processing integrated device comprises a bottom plate, the upper side of the bottom plate is fixedly connected to a vertical rod, the upper end of the vertical rod is fixedly connected to a top plate, the upper side of the top plate is fixedly connected to a hydraulic cylinder, the output end of the lower side of the hydraulic cylinder is fixedly connected to a lifting plate, the lower side of the lifting plate is fixedly connected to a drilling machine, the upper side of the bottom plate is fixedly connected to two guide plates 1, the outer side of the guide plate 1 is slidably connected to a guide block 1, the upper side of the guide block 1 is fixedly connected to a fixed plate, the upper side of the fixed plate is fixedly connected to two guide plates 2, the outer side of the guide plate 2 is slidably connected to a guide block 2, and a clamping unit is provided on the upper side of the guide block 2; Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0006] Preferably, a fixing rod is fixedly connected to the outside of the placement box, the outer end of the fixing rod is fixedly connected to a square tube, the left side of the placement box is fixedly connected to a mounting plate, the upper side of the mounting plate is fixedly connected to an air pump, a delivery pipe is fixedly connected between the air pump and the square tube, and a pressure relief valve is provided on the outside of the delivery pipe.

[0007] Preferably, a lifting slot is provided on the outer side of the splint, and a lifting block is slidably connected to the inner side of the lifting slot, and two mounting blocks are fixedly connected to one side of the lifting block near the middle of the placement box, and a lifting rod is provided on the lower side of the mounting block, and the lower end of the lifting rod is fixedly connected to the lower pressure block, and the upper end of the lifting rod passes through the upper side of the mounting block and is fixedly connected to the piston disk 2, and the upper side of the mounting block is fixedly connected to the fixed cylinder 2, and a spring 3 is fixedly connected between the inner wall of the fixed cylinder 2 and the piston disk 2, and a fixed tube 2 is fixedly connected between the two fixed cylinders 2, and a fixed tube 1 is fixedly connected between the two fixed cylinders 1, and a connecting tube is fixedly connected between the fixed tube 1 and the fixed tube 2, and branch tubes are fixedly connected between the multiple connecting tubes and the square tube.

[0008] Preferably, a placement groove is provided on the outer side of the lower end of the splint, and a control rod is provided on the inner side of the placement groove, one end of the control rod is fixedly connected to the contact plate, and the other end of the control rod passes through the outer side of the splint and is fixedly connected to the control plate, the upper side of the control plate is fixedly connected to a rotating block 1, the outer side of the rotating block 1 is rotatably connected to an inclined plate, and the side of the lifting block away from the placement box is fixedly connected to a rotating block 2, and the rotating block 2 is rotatably connected to the inclined plate.

[0009] Preferably, a spring 1 is fixedly connected between the control plate and the clamping plate.

[0010] Preferably, the control rod is slidably connected to the clamping plate.

[0011] Preferably, the plurality of rotating plates are all inclined structures, and the plurality of rotating plates are arranged in a circular array.

[0012] Preferably, a fixed block 1 is fixedly connected to the upper side of the base plate, a control block 1 is fixedly connected to the lower side of the fixed plate, an electric push rod 2 is fixedly connected between the control block 1 and the fixed block 1, a control block 2 is fixedly connected to the lower side of the placement box, a fixed block 2 is fixedly connected to the upper side of the fixed plate, and an electric push rod 3 is fixedly connected between the fixed block 2 and the control block 2.

[0013] Beneficial effects The present invention provides an integrated device for processing a speaker bracket. Compared with the prior art, it has the following advantages: (1) The speaker bracket processing integrated device is provided with a bottom plate, a placement box, a slide groove, a slider, a clamping plate, a rotating plate, a lifting plate and an electric push rod, which is convenient for controlling the electric push rod, and controls the clamping plates in multiple directions to limit the speaker bracket, thereby increasing the clamping and limiting effect and facilitating punching.

[0014] (2) The speaker bracket processing integrated device is provided with a clamping plate, a lifting groove, a lifting block, a pressing block, a fixing tube 1, a fixing tube 2, a moving rod, a lifting rod and an inclined plate. When the clamping plate limits the speaker bracket, the pressing block presses the bracket downward to limit the bracket, thereby increasing the clamping and limiting effect of the speaker bracket.

[0015] (3) The integrated speaker bracket processing device is provided with an air pump, a fixing tube 1, a fixing tube 2, a delivery pipe, a fixing tube 1, a fixing tube 2 and a branch pipe, which facilitates the positioning of various types of speaker brackets and increases the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the overall three-dimensional structural diagram of the present invention; Figure 2 It is a three-dimensional structural diagram of the present invention; Figure 3 is a three-dimensional structural diagram of the middle clamping unit of the present invention; Figure 4 This is a three-dimensional diagram of the internal structure of the clamping unit in the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 It is a partial three-dimensional structural diagram of the clamping unit in the present invention; Figure 7 It is a three-dimensional structural diagram of the splint in the present invention; Figure 8 It is a partially cutaway three-dimensional structural diagram of the clamping unit in the present invention; Figure 9 It is a cross-sectional three-dimensional structural diagram of the splint in the present invention.

[0017] In the figure: 1, bottom plate; 2, vertical pole; 3, top plate; 4, hydraulic cylinder; 5, lifting plate; 6, drilling machine; 7, clamping unit; 701, placement box; 702, mounting plate; 703, air pump; 704, fixed rod; 705, square tube; 706, slide; 707, slider; 708, delivery pipe; 709, pressure relief valve; 710, bottom block 1; 711, rotating plate; 712, bottom block 2; 713, lifting plate; 714, electric push rod 1; 715, moving block; 716, fixed cylinder 1; 717, moving rod; 718, clamping plate; 719, fixed pipe 1; 720, branch pipe; 721, connecting pipe; 722, lifting slot; 723, lifting 724, mounting block; 725, fixing cylinder two; 726, fixing tube two; 727, placement slot; 728, control rod; 729, contact plate; 730, control plate; 731, spring one; 732, lifting rod; 733, pressing block; 734, spring two; 735, piston disc one; 736, rotating block one; 737, inclined plate; 738, rotating block two; 739, spring three; 740, piston disc two; 8, guide plate one; 9, guide block one; 10, fixing plate; 11, control block one; 12, electric push rod two; 13, fixing block one; 14, guide plate two; 15, guide block two; 16, control block two; 17, electric push rod three; 18, fixing block two. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0019] Example 1: See also Figure 1 - Figure 6The present invention provides a technical solution: a speaker bracket processing integrated device, including a bottom plate 1, the upper side of the bottom plate 1 is fixedly connected to a vertical rod 2, the upper end of the vertical rod 2 is fixedly connected to a top plate 3, the upper side of the top plate 3 is fixedly connected to a hydraulic cylinder 4, the output end of the lower side of the hydraulic cylinder 4 is fixedly connected to a lifting plate 5, and the lower side of the lifting plate 5 is fixedly connected to a drilling machine 6, the upper side of the bottom plate 1 is fixedly connected to two guide plates 8, the outer side of the guide plate 8 is slidably connected to a guide block 9, the upper side of the guide block 9 is fixedly connected to a fixed plate 10, the upper side of the fixed plate 10 is fixedly connected to two guide plates 2 14, the outer side of the guide plate 2 14 is slidably connected to a guide block 2 15, and a clamping unit 7 is provided on the upper side of the guide block 2 15, the upper side of the bottom plate 1 is fixedly connected to a fixed block 13, the lower side of the fixed plate 10 is fixedly connected to a control block 11, and an electric push rod 2 12 is fixedly connected between the control block 11 and the fixed block 13. The lower side of the box 701 is fixedly connected with a control block 2 16, the upper side of the fixed plate 10 is fixedly connected with a fixed block 2 18, and an electric push rod 3 17 is fixedly connected between the fixed block 2 18 and the control block 2 16. When drilling the speaker bracket, the hydraulic cylinder 4 is controlled to drive the lifting plate 5 to descend, and the lifting plate 5 drives the drilling machine 6 to descend, and the drilling machine 6 is started to make the drilling machine 6 drill holes in the speaker bracket, and the electric push rod 2 12 is controlled to drive the control block 11 to move left and right, and the control block 11 drives the fixed plate 10 to move left and right, and the fixed plate 10 drives the speaker bracket to move up and down in the left and right directions, and then the electric push rod 3 17 is controlled to drive the control block 2 16 to move forward and backward, and the control block 2 16 drives the placement box 701 to move forward and backward, and the placement box 701 drives the speaker bracket to move forward and backward, so as to facilitate the adjustment of the speaker bracket and the drilling of the speaker bracket, and the speaker bracket is clamped and limited by the clamping unit 7.

[0020] The clamping unit 7 includes a placement box 701, which is fixedly connected to the upper side of the guide block 2 15. A plurality of sliding grooves 706 are provided on the upper side of the placement box 701, and a slider 707 is slidably connected to the inner side of the plurality of sliding grooves 706. The upper sides of the plurality of sliders 707 are fixedly connected to a moving block 715. The moving block 715 is fixedly connected to one side of the middle of the placement box 701 with two fixed cylinders 1 716. A piston disk 1 735 is provided on the inner side of the fixed cylinder 1 716. A moving rod 717 is fixedly connected to one side of the piston disk 1 735. The outer end of the moving rod 717 is fixedly connected to a splint 718. A spring 2 734 is fixedly connected between the other side of the piston disk 1 735 and the inner wall of the fixed cylinder 1 716. The lower sides of the plurality of sliders 707 are fixedly connected to the bottom block 1 710. The outer side of the bottom block 1 710 is rotatably connected to a rotating plate 711. The outer side of the lower end of the rotating plate 711 is rotatably connected to the bottom block 2 712 The lower side of the bottom block 712 is fixedly connected to a lifting plate 713, and an electric push rod 1 714 is fixedly connected between the lifting plate 713 and the placement box 701. The multiple rotating plates 711 are all inclined structures, and the multiple rotating plates 711 are arranged in a circular array. When punching the bracket, the speaker bracket is placed on the placement box 701, and then the electric push rod 1 714 is controlled to drive the lifting plate 713 to move. The lifting plate 713 drives the multiple rotating plates 711 to move while rotating, and the rotating plate 711 drives the slider 707 to move, so that the multiple sliders 707 are close to the bracket, and the slider 707 drives the moving block 715 to move. The moving block 715 drives the fixed cylinder 1 716 to move, and the fixed cylinder 1 716 drives the splint 718 on the moving rod 717 to move, so that the multiple splints 718 are close to the bracket, which is convenient for the multiple splints 718 to limit the bracket, and it is convenient to limit the bracket in multiple directions, thereby increasing the clamping and limiting effect of the bracket.

[0021] Example 2: Based on the first embodiment, Figure 7 - Figure 9As shown, the outer side of the placement box 701 is fixedly connected to a fixing rod 704, the outer end of the fixing rod 704 is fixedly connected to a square tube 705, the left side of the placement box 701 is fixedly connected to a mounting plate 702, the upper side of the mounting plate 702 is fixedly connected to an air pump 703, a delivery pipe 708 is fixedly connected between the air pump 703 and the square tube 705, a pressure relief valve 709 is provided on the outer side of the delivery pipe 708, a lifting groove 722 is provided on the outer side of the splint 718, and a lifting groove 722 is slidably connected to the inner side of the lifting groove Block 723, the lifting block 723 is fixedly connected to two mounting blocks 724 on one side near the middle of the placement box 701, a lifting rod 732 is provided on the lower side of the mounting block 724, the lower end of the lifting rod 732 is fixedly connected to the pressing block 733, the upper end of the lifting rod 732 passes through the upper side of the mounting block 724 and is fixedly connected to the second piston disc 740, the upper side of the mounting block 724 is fixedly connected to the second fixing cylinder 725, and the inner wall of the second fixing cylinder 725 and the second piston disc 740 are fixedly connected to the third spring 739. A fixed tube 2 726 is fixedly connected between the two fixed tubes 2 725, a fixed tube 1 719 is fixedly connected between the two fixed tubes 1 716, a connecting tube 721 is fixedly connected between the fixing tube 1 719 and the fixing tube 2 726, and branch tubes 720 are fixedly connected between the multiple connecting tubes 721 and the square tube 705. A placement groove 727 is provided on the outer side of the lower end of the splint 718, and a control rod 728 is provided on the inner side of the placement groove 727. One end of the control rod 728 is fixedly connected to the contact plate 7 29. The other end of the control rod 728 passes through the outer side of the splint 718 and is fixedly connected to the control plate 730. The upper side of the control plate 730 is fixedly connected to a rotating block 1 736. The outer side of the rotating block 1 736 is rotatably connected to an inclined plate 737. The side of the lifting block 723 away from the placement box 701 is fixedly connected to a rotating block 2 738. The rotating block 2 738 is rotatably connected to the inclined plate 737. A spring 1 731 is fixedly connected between the control plate 730 and the splint 718. The control rod 728 is slidably connected to the splint 718.

[0022] When the clamping plate 718 is close to the speaker bracket, the clamping plate 718 drives the contact plate 729 on the control rod 728 to move. When the contact plate 729 contacts the speaker bracket, the clamping plate 718 continues to move, the contact plate 729 drives the control rod 728 to move, and the control rod 728 drives the control plate 730 to move. At the same time, the clamping plate 718 drives the lower pressing block 733 on the lifting rod 732 to move, so that the lower pressing block 733 is located above the speaker bracket. When the control plate 730 moves to the side away from the middle of the placement box 701, the control plate 730 0 drives the inclined plate 737 to rotate, the inclined plate 737 drives the lifting block 723 to descend, the lifting block 723 drives the installation block 724 to descend, the installation block 724 drives the lifting rod 732 to descend, the lifting rod 732 drives the pressing block 733 to descend, so that the pressing block 733 contacts the bracket, and when the contact plate 729 moves to the inner side of the placement groove 727, the clamping plate 718 limits the speaker bracket, and the pressing block 733 presses the speaker bracket downward to limit it, so that the bracket is doubly limited, thereby increasing the clamping effect and facilitating the later punching.

[0023] When the splint 718 limits the bracket, the splint 718 drives the moving rod 717 to move, the moving rod 717 drives the piston disc 1 735 to move, the pressing block 733 drives the lifting rod 732 to rise, and the lifting rod 732 drives the piston disc 2 740 to rise. At this time, the air pump 703 is started, and the air flow is distributed to the fixed tube 1 719 and the fixed tube 2 726 in the delivery pipe 708, the square tube 705, and the branch pipe 720, so that the air flow enters the fixed cylinder 1 716 and the fixed cylinder 2 725, so that the piston disc 1 735 and the piston disc 2 740 are limited, and the splint 718 and the pressing block 733 are used to limit various types of speaker brackets, thereby increasing the applicability of the limit of the speaker bracket processing.

[0024] Working principle: When in use, first place the speaker bracket on the placement box 701, then control the electric push rod 714 to drive the lifting plate 713 to descend, and under the action of multiple rotating plates 711, sliders 707, and moving blocks 715, it is convenient to move the clamping plate 718 on the rod 717 to move close to the bracket, so that the bracket is limited in multiple directions, and the clamping plate 718 drives the contact plate 729 to contact the bracket. Under the action of the control rod 728, the control plate 730 and the inclined plate 737, the pressing block 733 is controlled to press the bracket downward, so that the speaker The speaker bracket is limited again to increase stability during processing. When the splint 718 limits the bracket, the splint 718 drives the piston disc 1 735 on the movable rod 717 to move, and the lower pressure block 733 drives the piston disc 2 740 on the lifting rod 732 to rise, which makes it convenient for the splint 718 and the lower pressure block 733 to limit various types of speaker brackets, increasing applicability, and starting the air pump 703 to fill gas into the fixed cylinder 1 716 and the fixed cylinder 2 725, which makes it convenient to limit the splint 718 and the lower pressure block 733.

[0025] When drilling, control the hydraulic cylinder 4 to drive the drilling machine 6 to descend, start the drilling machine 6, and make the drilling machine 6 drill holes in the bracket. Control the electric push rod 2 12 to drive the fixed plate 10 to move left and right, and the fixed plate 10 drives the bracket to move left and right. Control the electric push rod 3 17 to drive the placement box 701 to move back and forth, so as to facilitate the adjustment of the bracket and facilitate drilling.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0027] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A speaker bracket processing integrated device, comprising a bottom plate (1), a vertical pole (2) fixedly connected to the upper side of the bottom plate (1), a top plate (3) fixedly connected to the upper end of the vertical pole (2), a hydraulic cylinder (4) fixedly connected to the upper side of the top plate (3), a lifting plate (5) fixedly connected to the output end of the lower side of the hydraulic cylinder (4), and a drilling machine (6) fixedly connected to the lower side of the lifting plate (5), characterized in that: Two guide plates (8) are fixedly connected to the upper side of the bottom plate (1); a guide block (9) is slidably connected to the outer side of the guide plate (8); a fixed plate (10) is fixedly connected to the upper side of the guide block (9); two guide plates (14) are fixedly connected to the upper side of the fixed plate (10); a guide block (15) is slidably connected to the outer side of the guide plate (14); a clamping unit (7) is provided on the upper side of the guide block (15); The clamping unit (7) comprises a placement box (701), the placement box (701) is fixedly connected to the upper side of the guide block 2 (15), a plurality of slide grooves (706) are provided on the upper side of the placement box (701), a plurality of slide grooves (706) are slidably connected to the inner sides of the plurality of slide grooves (706), a plurality of slide blocks (707) are fixedly connected to the upper sides of the plurality of slide blocks (707), a moving block (715) is fixedly connected to one side of the moving block (715) close to the middle of the placement box (701), a piston disc 1 (735) is provided on the inner side of the fixed disc 1 (716), and a moving rod (715) is fixedly connected to one side of the piston disc 1 (735). 717), the outer end of the moving rod (717) is fixedly connected with a clamping plate (718), the other side of the piston disk (735) is fixedly connected with a spring (734) between the inner wall of the fixed cylinder (716), the lower sides of the plurality of sliders (707) are fixedly connected with a bottom block (710), the outer side of the bottom block (710) is rotatably connected with a rotating plate (711), the outer side of the lower end of the rotating plate (711) is rotatably connected with a bottom block (712), the lower side of the bottom block (712) is fixedly connected with a lifting plate (713), and an electric push rod (714) is fixedly connected between the lifting plate (713) and the placement box (701).

2. The speaker bracket processing integrated device according to claim 1, characterized in that: The outer side of the placement box (701) is fixedly connected to a fixing rod (704), the outer end of the fixing rod (704) is fixedly connected to a square tube (705), the left side of the placement box (701) is fixedly connected to a mounting plate (702), the upper side of the mounting plate (702) is fixedly connected to an air pump (703), a delivery pipe (708) is fixedly connected between the air pump (703) and the square tube (705), and a pressure relief valve (709) is provided on the outer side of the delivery pipe (708).

3. The speaker bracket processing integrated device according to claim 2, characterized in that: A lifting groove (722) is provided on the outer side of the clamping plate (718), and a lifting block (723) is slidably connected to the inner side of the lifting groove (722). Two mounting blocks (724) are fixedly connected to one side of the lifting block (723) close to the middle of the placement box (701). A lifting rod (732) is provided on the lower side of the mounting block (724), and a lower pressure block (733) is fixedly connected to the lower end of the lifting rod (732). The upper end of the lifting rod (732) passes through the upper side of the mounting block (724) and is fixedly connected to a piston plate 2 (740). The mounting block (7 24), a fixed cylinder 2 (725) is fixedly connected to the upper side, a spring 3 (739) is fixedly connected between the inner wall of the fixed cylinder 2 (725) and the piston disc 2 (740), a fixed tube 2 (726) is fixedly connected between the two fixed cylinders 2 (725), a fixed tube 1 (719) is fixedly connected between the two fixed cylinders 1 (716), a connecting tube (721) is fixedly connected between the fixed tube 1 (719) and the fixed tube 2 (726), and branch tubes (720) are fixedly connected between the plurality of connecting tubes (721) and the square tube (705).

4. The speaker bracket processing integrated device according to claim 3, characterized in that: A placement groove (727) is provided on the outer side of the lower end of the clamping plate (718), and a control rod (728) is provided on the inner side of the placement groove (727). One end of the control rod (728) is fixedly connected to a contact plate (729), and the other end of the control rod (728) passes through the outer side of the clamping plate (718) and is fixedly connected to a control plate (730). A rotating block 1 (736) is fixedly connected to the upper side of the control plate (730), and an inclined plate (737) is rotatably connected to the outer side of the rotating block 1 (736). A rotating block 2 (738) is fixedly connected to the side of the lifting block (723) away from the placement box (701), and the rotating block 2 (738) is rotatably connected to the inclined plate (737).

5. The speaker bracket processing integrated device according to claim 4, characterized in that: A spring 1 (731) is fixedly connected between the control plate (730) and the clamping plate (718).

6. The speaker bracket processing integrated device according to claim 4, characterized in that: The control rod (728) is slidably connected to the clamping plate (718).

7. The speaker bracket processing integrated device according to claim 1, characterized in that: The plurality of rotating plates (711) are all inclined structures, and the plurality of rotating plates (711) are arranged in a circular array.

8. The speaker bracket processing integrated device according to claim 1, characterized in that: A fixing block 1 (13) is fixedly connected to the upper side of the bottom plate (1), a control block 1 (11) is fixedly connected to the lower side of the fixing plate (10), an electric push rod 2 (12) is fixedly connected between the control block 1 (11) and the fixing block 1 (13), a control block 2 (16) is fixedly connected to the lower side of the placement box (701), a fixing block 2 (18) is fixedly connected to the upper side of the fixing plate (10), and an electric push rod 3 (17) is fixedly connected between the fixing block 2 (18) and the control block 2 (16).

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