Clamp for tensile test of silver-plated alloy wire

Abstract

The invention discloses a clamp for a tensile test of a silver-plated alloy wire, and relates to the technical field of silver-plated alloy wire tests.The clamp comprises a bottom plate, two fixing blocks are fixedly connected to the upper side of the bottom plate, a mounting rod is fixedly connected between the two fixing blocks, and a limiting wheel is fixedly connected to the middle of the mounting rod; fixing discs are fixedly connected to the front side and the rear side of the limiting wheel, a stabilizing unit is arranged on the outer side of the limiting wheel and comprises side rods, the side rods are arranged on the outer sides of the two fixing blocks, and the outer ends of the side rods penetrate through the outer sides of the fixing blocks and the outer sides of the fixing discs and are fixedly connected with clamping blocks. According to the clamp for the tensile test of the silver-plated alloy wire, by arranging the bottom plate, the limiting wheels, the clamping blocks, the side rods, the first inclined plate and the first sliding block, when the silver-plated alloy wire is tested, the clamping blocks on the two sides can be conveniently controlled to limit the wire, the wire is not prone to deviation in the test process, and therefore the situation that the test precision is affected due to deviation of the wire is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of silver-plated alloy wire testing, in particular to a clamp for a silver-plated alloy wire tensile test. Background Art

[0002] Silver-plated alloy wire is a composite material consisting of a silver layer plated on an alloy substrate. It combines the excellent electrical conductivity, thermal conductivity, and oxidation resistance of silver with the mechanical strength and cost-effectiveness of the alloy matrix. When performing a tensile test on silver-plated alloy wire, a clamp is required to limit the ends of the wire to facilitate the tensile test.

[0003] After searching, the Chinese patent with announcement number CN206862764U discloses a fixture for tensile testing of filamentary materials, including an upper fixture and a lower fixture with the same structure and central symmetry, both of which are composed of a fixture body and guide wheels, blocks, movable clamps, guide rods and ejector pins installed thereon; the upper and lower guide wheels have a common tangent surface in the vertical direction and are arranged on both sides of the common tangent surface, the two blocks are located between the two guide wheels and contact the two guide wheels respectively, and a clamping surface tangent to the guide wheels is formed between the movable clamp and the block, and the clamping surface is also parallel to the common tangent surface of the two guide wheels; the movable clamp is moved by the ejector pin and is limited by the guide rod.

[0004] In the above patent, the guide wheel and the clamp block are used to limit the wire to facilitate the subsequent tensile test. The guide wheel is the positioning reference of the wire, but the wheel rim may wear after long-term use, causing the wire to deviate from the common cutting surface and introduce non-axial force (such as lateral bending), which will cause deviation in the tensile test results. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention provides a clamp for tensile testing of silver-plated alloy wires, which solves the problem that the wires are easily deflected when being limited by guide wheels.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: The clamp for tensile testing of silver-plated alloy wire includes a base plate, two fixed blocks are fixedly connected to the upper side of the base plate, a mounting rod is fixedly connected between the two fixed blocks, the middle part of the mounting rod is fixedly connected to a limiting wheel, the front and rear sides of the limiting wheel are fixedly connected to a fixing disk, a stabilizing unit is provided on the outside of the limiting wheel, and the stabilizing unit includes a side rod, which is provided on the outside of the two fixed blocks, one end of the side rod is fixedly connected to a clamping block, one end of the side rod passes through the outside of the fixing disk, a limiting assembly is provided on the outside of the side rod, the limiting assembly makes the wire more stable on the limiting wheel, and a fastening assembly is provided on the outside of the fixed block, the fastening assembly makes the wire clamping more secure.

[0007] Preferably, the limit assembly includes an L-shaped plate, which is fixedly connected to one end of the two side rods away from the limiting wheel, the upper side of the L-shaped plate is rotatably connected to an inclined plate 1, the outer sides of the two inclined plates 1 are rotatably connected to a rotating block 1, the left side of the rotating block 1 is fixedly connected to a moving block, a sliding groove 1 is provided on the upper side of the base plate, the inner side of the sliding groove 1 is slidably connected to a slider 1, the slider 1 is fixedly connected to the moving block, the upper side of the base plate is fixedly connected to a mounting block 1, and an electric push rod is fixedly connected between the mounting block 1 and the slider 1.

[0008] Preferably, the fastening assembly includes side panels, which are fixedly connected to the left and right sides of the fixed block, a slide groove 2 is provided on the outer side of the side panel, a slider 2 is slidably connected to the inner side of the slide groove 2, a connecting plate is fixedly connected to the outer side of the slider 2, and two mounting blocks 2 are fixedly connected to the side of the connecting plates on both sides close to the limiting wheel, a limiting roller is provided between the two mounting blocks 2, and a protective plate is fixedly connected to the outer side of the side panel.

[0009] Preferably, the outer side of the fixed block is rotatably connected to a rotating shaft, the outer end of the rotating shaft is fixedly connected to a triangular block, the outer side of the triangular block is rotatably connected to two inclined plates two, the outer side of the inclined plate two is fixedly connected to a connecting rod one, the connecting rod one is rotatably connected to the slider two, the outer side of the fixed block is fixedly connected to a guide plate, the outer side of the guide plate is slidably connected to a guide block, the side of the guide block close to the triangular block is rotatably connected to an inclined plate three, the inclined plate three is rotatably connected to the triangular block, the outer side of the L-shaped plate is rotatably connected to the connecting rod two, the outer end of the connecting rod two is fixedly connected to the control plate, and the control plate is rotatably connected to the guide block.

[0010] Preferably, an installation component is provided on the upper side of the side panel, and the installation component includes a top plate, the top plate is fixedly connected to the upper side of the side panel, a slide groove three is provided on the outer side of the top plate, a slide plate is slidably connected to the inner side of the slide groove three, a clamping plate one is fixedly connected to the side of the slide plate close to the limiting wheel, a clamping plate two is fixedly connected to the side of the top plate close to the limiting wheel, a plurality of plug rods are fixedly connected to the side of the clamping plate one close to the clamping plate two, and a socket adapted to the plug rods is provided on the outer side of the clamping plate two.

[0011] Preferably, the upper side of the bottom plate is fixedly connected to an air box, a piston plate 1 is provided on the inner side of the air box, a moving rod is fixedly connected between the piston plate 1 and the slider 1, the top plate is fixedly connected to a control box on the side away from the limiting wheel, a piston plate 2 is provided on the inner side of the control box, a spring is fixedly connected between the outer side of the piston plate 2 and the inner wall of the control box, the upper side of the piston plate 2 is fixedly connected to a lifting rod, a rectangular groove is provided on the upper side of the lifting rod, an inclined plate 4 is rotatably connected to the inner side of the rectangular groove, a connecting rod 3 is fixedly connected to the side of the inclined plate 4 close to the slide, the connecting rod 3 is rotatably connected to the slide, and a delivery pipe is fixedly connected between the control box and the air box.

[0012] The present invention provides a fixture for tensile testing of silver-plated alloy wires, which has the following advantages compared with the prior art: (1) The fixture for the tensile test of the silver-plated alloy wire is provided with a bottom plate, a limiting wheel, a clamping block, a side rod, an inclined plate and a slider. When the silver-plated alloy wire is tested, it is convenient to control the clamping blocks on both sides to limit the wire, so that the wire is not easily deflected during the test, thereby avoiding affecting the test accuracy due to the deflection of the wire.

[0013] (2) The clamp for the tensile test of the silver-plated alloy wire is equipped with side plates, connecting plates, limiting rollers, triangular blocks, inclined plates 2, and guide blocks. When the clamping blocks on both sides limit the wire, the limiting rollers on both sides can be controlled to move closer to the limiting wheels, thereby further limiting the wire and enhancing the tightness during the limit test.

[0014] (3) The fixture for the tensile test of the silver-plated alloy wire is provided with a top plate, a first clamping plate, a second clamping plate, a control box and an air box. When the clamping block limits the position of the wire, the first clamping plate and the second clamping plate can conveniently limit the extended portion of the wire to prevent the wire from falling off from the limit position. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a side perspective structural diagram of the whole invention; Figure 3 Schematic diagram of the three-dimensional structure of the limiting component in the present invention; Figure 4 It is a schematic diagram of a partial three-dimensional structure of the present invention; Figure 5 is a schematic diagram of the three-dimensional structure of the fastening assembly in the present invention; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 It is a sectional perspective structural diagram of the installation component in the present invention; Figure 8 for Figure 7 Enlarged view of point B in the middle.

[0016] In the figure: 1, bottom plate; 2, fixed block; 3, mounting rod; 4, fixed plate; 5, limiting wheel; 6, stabilizing unit; 61, side rod; 62, clamping block; 63, limiting assembly; 64, fastening assembly; 65, mounting assembly; 631, L-shaped plate; 632, inclined plate 1; 633, rotating block 1; 635, moving block; 636, slide 1; 637, slider 1; 638, electric push rod; 639, mounting block 1; 641, side plate; 642, slide 2; 643, slider 2; 644, connecting plate; 645, mounting block 2; 646, limiting roller; 647, protective plate; 648, connecting rod 1; 64 9. Inclined plate 2; 6410. Rotating shaft; 6411. Triangular block; 6412. Inclined plate 3; 6413. Guide plate; 6414. Guide block; 6415. Control plate; 6416. Connecting rod 2; 651. Air box; 652. Moving rod; 653. Piston plate 1; 654. Delivery pipe; 655. Top plate; 656. Slide chute 3; 657. Slide plate; 658. Card plate 1; 659. Insert rod; 6510. Card plate 2; 6511. Control box; 6512. Spring; 6513. Piston plate 2; 6514. Lifting rod; 6515. Rectangular slot; 6516. Inclined plate 4; 6517. Connecting rod 3. DETAILED DESCRIPTION

[0017] 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.

[0018] Example 1: Please refer to Figure 1 - Figure 6 The clamp for the tensile test of silver-plated alloy wire includes a base plate 1, two fixed blocks 2 are fixedly connected to the upper side of the base plate 1, a mounting rod 3 is fixedly connected between the two fixed blocks 2, the middle part of the mounting rod 3 is fixedly connected to the limiting wheel 5, the front and rear sides of the limiting wheel 5 are fixedly connected to the fixing disk 4, a stabilizing unit 6 is arranged on the outside of the limiting wheel 5, the stabilizing unit 6 includes a side rod 61, the side rod 61 is arranged on the outside of the two fixed blocks 2, one end of the side rod 61 is fixedly connected to the clamping block 62, one end of the side rod 61 passes through the outside of the fixing disk 4, a limiting component 63 is arranged on the outside of the side rod 61, the limiting component 63 makes the wire more stable on the limiting wheel 5, and a fastening component 64 is arranged on the outside of the fixed block 2. The fastening component 64 makes the wire clamping more secure. Before the tensile test, the silver-plated alloy wire bypasses the limiting wheel 5 and passes through the stabilizing unit 6 to make the wire limitation more stable.

[0019] The limiting assembly 63 includes an L-shaped plate 631, which is fixedly connected to the ends of the two side rods 61 away from the limiting wheel 5. The upper side of the L-shaped plate 631 is rotatably connected to an inclined plate 632. The outer sides of the two inclined plates 632 are rotatably connected to a rotating block 633. The left side of the rotating block 633 is fixedly connected to a moving block 635. A sliding groove 636 is provided on the upper side of the bottom plate 1. A slider 637 is slidably connected to the inner side of the sliding groove 636. The slider 637 is fixedly connected to the moving block 635. The upper side of the bottom plate 1 is fixedly connected to a mounting block 639. A mounting block 639 is fixedly connected to the slider 637. An electric push rod 638 is fixedly connected. When the wire is limited, the electric push rod 638 is controlled, and the electric push rod 638 drives the slider 637 to move to the left, and the slider 637 drives the moving block 635 to move, and the moving block 635 drives the inclined plate 632 to rotate, and the inclined plate 632 drives the L-shaped plate 631 to move. Since the two inclined plates 632 are symmetrically distributed, the L-shaped plates 631 on both sides are close to each other, and the L-shaped plate 631 drives the side rod 61 to move, and the side rod 61 drives the clamping block 62 to move, so that the clamping blocks 62 on both sides are close to each other, which is convenient for correcting the offset wire and preventing the wire offset from affecting the accuracy of the tensile test.

[0020] The fastening assembly 64 includes a side plate 641, which is fixedly connected to the left and right sides of the fixed block 2. A second slide groove 642 is provided on the outer side of the side plate 641. A second slider 643 is slidably connected to the inner side of the second slide groove 642. A connecting plate 644 is fixedly connected to the outer side of the second slider 643. Two mounting blocks 645 are fixedly connected to the side of the connecting plates 644 on both sides close to the limiting wheel 5. A limiting roller 646 is provided between the two mounting blocks 645. A protective plate 647 is fixedly connected to the outer side of the side plate 641. The outer side of the fixed block 2 is rotatably connected to a rotating shaft 6410. The outer end of the rotating shaft 6410 is fixedly connected to a triangular block 6411. The triangular block 641 1 is rotatably connected to two inclined plates 649 on the outside, and the outside of the inclined plate 649 is fixedly connected to a connecting rod 1 648, which is rotatably connected to the slider 2 643. The outside of the fixed block 2 is fixedly connected to a guide plate 6413, and the outside of the guide plate 6413 is slidably connected to a guide block 6414. The side of the guide block 6414 close to the triangular block 6411 is rotatably connected to the inclined plate 3 6412, and the inclined plate 3 6412 is rotatably connected to the triangular block 6411. The outside of the L-shaped plate 631 is rotatably connected to the connecting rod 2 6416, and the outer end of the connecting rod 2 6416 is fixedly connected to the control plate 6415, which is rotatably connected to the guide block 6414.

[0021] When limiting the wire, the L-shaped plate 631 moves in the direction close to the fixed block 2, and the L-shaped plate 631 drives the connecting rod 2 6416 to move, and the connecting rod 2 6416 drives the control plate 6415 to rotate, and the control plate 6415 drives the guide block 6414 to rise, and the guide block 6414 drives the inclined plate 3 6412 to rotate, and the inclined plate 3 6412 drives the triangular block 6411 to rotate clockwise, and the triangular block 6411 drives the inclined plate 2 649 to rotate, and the inclined plate 2 649 drives the slider 2 643 to move, so that the sliders 2 643 on both sides approach each other, and the slider 2 643 drives the connecting plate 644 to move, and the connecting plate 644 drives the mounting block 2 645 to move, and the mounting block 2 645 drives the limiting rollers 646 to move, so that the limiting rollers 646 on both sides approach the limiting wheel 5, so that the limiting rollers 646 on both sides are convenient for contacting with the wire, thereby facilitating the limiting of the wire, increasing the effect of the wire limiting, and preventing the wire from slipping.

[0022] Example 2: Based on Example 1, Figure 7 、 Figure 8 As shown, the upper side of the side plate 641 is provided with a mounting assembly 65, and the mounting assembly 65 includes a top plate 655, which is fixedly connected to the upper side of the side plate 641, and a sliding groove 3 656 is provided on the outer side of the top plate 655, and a slide plate 657 is slidably connected to the inner side of the sliding groove 656, and a clamping plate 1 658 is fixedly connected to the side of the slide plate 657 close to the limiting wheel 5, and a clamping plate 2 6510 is fixedly connected to the side of the top plate 655 close to the limiting wheel 5, and a plurality of plug rods 659 are fixedly connected to the side of the clamping plate 1 658 close to the side of the clamping plate 2 6510, and a socket adapted to the plug rod 659 is provided on the outer side of the clamping plate 2 6510, and an air box 651 is fixedly connected to the upper side of the bottom plate 1, and a piston plate 1 653 is provided on the inner side of the air box 651, and the piston plate 1 653 is connected to the slider A moving rod 652 is fixedly connected between the first and second plates 637, and a control box 6511 is fixedly connected to the side of the top plate 655 away from the limiting wheel 5. A piston plate 2 6513 is provided on the inner side of the control box 6511, and a spring 6512 is fixedly connected between the outer side of the piston plate 2 6513 and the inner wall of the control box 6511. A lifting rod 6514 is fixedly connected to the upper side of the piston plate 2 6513, and a rectangular groove 6515 is provided on the upper side of the lifting rod 6514. The inner side of the rectangular groove 6515 is rotatably connected to an inclined plate 4 6516, and the side of the inclined plate 4 6516 close to the slide plate 657 is fixedly connected to a connecting rod 3 6517, and the connecting rod 3 6517 is rotatably connected to the slide plate 657. A delivery pipe 654 is fixedly connected between the control box 6511 and the air tank 651.

[0023] When the clamping block 62 corrects the deviation of the wire, the slider 1 637 drives the moving rod 652 to move, and the moving rod 652 drives the piston plate 1 653 to move, so that the piston plate 1 653 pushes out the gas in the gas box 651, and the gas is transported to the control box 6511 through the delivery pipe 654. The gas pushes the piston plate 2 6513 to rise, and the piston plate 2 6513 drives the lifting rod 6514 to rise, and the lifting rod 6514 drives the inclined plate 4 6516 to rotate, and the inclined plate 4 6516 drives the slide plate 657 on the connecting rod 3 6517 to move right, and the slide plate 657 drives the clamping plate 1 658 to move right, so that the clamping plate 1 658 limits the protruding part of the wire, so that the end of the wire is limited, thereby enhancing the limiting effect of the wire and preventing the wire from falling off.

[0024] Working principle: When in use, the staff first winds the silver-plated alloy wire around the limiting wheel 5, and then controls the electric push rod 638 to drive the slider 1 637 to move, and the slider 1 637 drives the inclined plate 1 632 to rotate. Under the action of the L-shaped plate 631 and the side rod 61, it is convenient to control the clamping blocks 62 on both sides to approach each other, so as to facilitate the deviation correction operation of the wire. At the same time, the L-shaped plate 631 drives the control plate 6415 on the connecting rod 2 6416 to rotate, and the control plate 6415 drives the guide block 6414 to rise, and the guide block 6414 drives the inclined plate 3 6412 to rotate. Under the action of the triangular block 6411 and the inclined plate 2 649, it is convenient to control the sliders 2 643 on both sides to approach each other, and the sliders 2 643 drive the connecting plate 6 44 moves, and the limiting roller 646 on the mounting block 2 645 on the connecting plate 644 moves, which makes it convenient for the limiting rollers 646 on both sides to tighten the wire, so that the wire limiting effect is better. At the same time, the slider 1 637 drives the moving rod 652 to move, and the moving rod 652 drives the piston plate 1 653 to move. Under the action of the conveying pipe 654 and the control box 6511, the piston plate 2 6513 rises, and the piston plate 2 6513 drives the lifting rod 6514 to rise. The lifting rod 6514 drives the inclined plate 4 6516 to rotate, so that the slide plate 657 moves to the right, and the slide plate 657 drives the card plate 1 658 to move, which makes it convenient for the card plate 1 658 and the card plate 2 6510 to limit the end of the wire to prevent the wire from falling off during the test.

[0025] 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 fixture for tensile testing of silver-plated alloy wire, comprising a base plate (1), characterized in that: Two fixed blocks (2) are fixedly connected to the upper side of the bottom plate (1), a mounting rod (3) is fixedly connected between the two fixed blocks (2), a middle part of the mounting rod (3) is fixedly connected to a limiting wheel (5), the front and rear sides of the limiting wheel (5) are fixedly connected to a fixing disk (4), a stabilizing unit (6) is provided on the outside of the limiting wheel (5), and the stabilizing unit (6) includes a side rod (61), the side rod (61) is provided on the outside of the two fixed blocks (2), one end of the side rod (61) is fixedly connected to a clamping block (62), one end of the side rod (61) passes through the outside of the fixing disk (4), a limiting component (63) is provided on the outside of the side rod (61), the limiting component (63) makes the wire more stable on the limiting wheel (5), and a fastening component (64) is provided on the outside of the fixed block (2), the fastening component (64) makes the wire clamping more secure.

2. The fixture for tensile testing of silver-plated alloy wire according to claim 1, characterized in that: The limiting assembly (63) includes an L-shaped plate (631), the L-shaped plate (631) is fixedly connected to one end of the two side rods (61) away from the limiting wheel (5), the upper side of the L-shaped plate (631) is rotatably connected to an inclined plate (632), the outer sides of the two inclined plates (632) are rotatably connected to a rotating block (633), the left side of the rotating block (633) is fixedly connected to a moving block (635), the upper side of the bottom plate (1) is provided with a sliding groove (636), the inner side of the sliding groove (636) is slidably connected to a slider (637), the slider (637) is fixedly connected to the moving block (635), the upper side of the bottom plate (1) is fixedly connected to a mounting block (639), and an electric push rod (638) is fixedly connected between the mounting block (639) and the slider (637).

3. The fixture for tensile testing of silver-plated alloy wire according to claim 2, characterized in that: The fastening assembly (64) includes a side plate (641), the side plate (641) is fixedly connected to the left and right sides of the fixed block (2), a second slide groove (642) is provided on the outer side of the side plate (641), a second slider (643) is slidably connected to the inner side of the second slide groove (642), and a connecting plate (644) is fixedly connected to the outer side of the second slider (643), and the connecting plates (644) on both sides are fixedly connected to two mounting blocks (645) on one side close to the limiting wheel (5), and a limiting roller (646) is provided between the two mounting blocks (645), and a protective plate (647) is fixedly connected to the outer side of the side plate (641).

4. The fixture for tensile testing of silver-plated alloy wire according to claim 3, characterized in that: The outer side of the fixed block (2) is rotatably connected to a rotating shaft (6410), the outer end of the rotating shaft (6410) is fixedly connected to a triangular block (6411), the outer side of the triangular block (6411) is rotatably connected to two inclined plates (649), the outer side of the inclined plate (649) is fixedly connected to a connecting rod (648), the connecting rod (648) is rotatably connected to the slider (643), the outer side of the fixed block (2) is fixedly connected to a guide plate (6413), the guide plate (64 13) is slidably connected to a guide block (6414) on the outside, and the guide block (6414) is rotatably connected to an inclined plate three (6412) on the side close to the triangular block (6411), and the inclined plate three (6412) is rotatably connected to the triangular block (6411). The outer side of the L-shaped plate (631) is rotatably connected to a connecting rod two (6416), and the outer end of the connecting rod two (6416) is fixedly connected to a control plate (6415), and the control plate (6415) is rotatably connected to the guide block (6414).

5. The fixture for tensile testing of silver-plated alloy wire according to claim 4, characterized in that: The upper side of the side plate (641) is provided with a mounting assembly (65), and the mounting assembly (65) includes a top plate (655), the top plate (655) is fixedly connected to the upper side of the side plate (641), the outer side of the top plate (655) is provided with a slide groove (656), the inner side of the slide groove (656) is slidably connected with a slide plate (657), the side of the slide plate (657) close to the limiting wheel (5) is fixedly connected with a card plate (658), the side of the top plate (655) close to the limiting wheel (5) is fixedly connected with a card plate (6510), the side of the card plate (658) close to the card plate (6510) is fixedly connected with a plurality of plug rods (659), and the outer side of the card plate (6510) is provided with a socket adapted to the plug rods (659).

6. The fixture for tensile testing of silver-plated alloy wire according to claim 5, characterized in that: The upper side of the bottom plate (1) is fixedly connected to an air box (651), the inner side of the air box (651) is provided with a piston plate 1 (653), a moving rod (652) is fixedly connected between the piston plate 1 (653) and the slider 1 (637), the side of the top plate (655) away from the limiting wheel (5) is fixedly connected to a control box (6511), the inner side of the control box (6511) is provided with a piston plate 2 (6513), the outer side of the piston plate 2 (6513) and the inner wall of the control box (6511) are fixedly connected with a spring (651). 2) A lifting rod (6514) is fixedly connected to the upper side of the piston plate 2 (6513), a rectangular groove (6515) is provided on the upper side of the lifting rod (6514), an inclined plate 4 (6516) is rotatably connected to the inner side of the rectangular groove (6515), a connecting rod 3 (6517) is fixedly connected to the side of the inclined plate 4 (6516) close to the slide plate (657), the connecting rod 3 (6517) is rotatably connected to the slide plate (657), and a delivery pipe (654) is fixedly connected between the control box (6511) and the air box (651).

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