Dust removal device for crushing sand making machine

Abstract

The present application discloses a dust removal device for a crushing sand making machine, and relates to the technical field of sand making machines. The present application includes a machine body and a feed port and a discharge port both arranged thereon, the feed port is provided with a sieve plate and a fixed plate, the fixed plate is provided with a first dust removal member, the dust passing through the sieve plate is processed by the first dust removal member, the discharge port is provided with a mesh plate, and also includes: two frames, the frames are provided with a slider slidably, the frames are provided with a processing box, the first dust removal member is connected to the processing box, the slider, the frame and the processing box are provided with a driving member and a second dust removal member, the slider is driven to slide back and forth by the driving member, the dust passing through the mesh plate is processed by the second dust removal member, and a filter is provided in the processing box. When the present application is in use, the dust generated when sand and gravel pass through the feed port and the discharge port can be processed to avoid harm to the environment and staff, so it is more practical.

Description

Technical Field

[0001] The present application relates to the technical field of sand making machines, and in particular to a dust removal device for a crushing sand making machine. Background Art

[0002] The scientific name of sand making machine is impact crusher, abbreviated as impact crusher. It is a high-energy and low-consumption impact crusher with international advanced level. Its performance plays an irreplaceable role in various ore fine crushing equipment. It is currently the most effective, practical and reliable stone crushing machine. Sand making machine will generate a lot of dust when in use. In order to avoid the dust from causing harm to the environment and staff, it is necessary to use a dust removal device to deal with the dust. In the prior art, the dust removal device usually removes dust from the crushing chamber, but in actual use, sand and gravel will also generate a certain amount of dust when passing through the feed port and the discharge port. Although it is less than the dust generated during crushing, it will also cause harm to the environment and staff. Therefore, a dust removal device for crushing sand making machine is proposed. Summary of the invention

[0003] The purpose of this application is to solve the technical problem that the dust removal device usually removes dust from the crushing chamber, but in actual use, a certain amount of dust will be generated when sand and gravel pass through the feed port and the discharge port. Although it is less than the dust generated during crushing, it will also cause harm to the environment and workers. This application provides a dust removal device for a crushing and sand making machine.

[0004] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0005] The dust removal device of the crushing sand making machine comprises a machine body and a feed port and a discharge port both arranged thereon, the feed port is provided with a screen plate and a fixed plate, the fixed plate is provided with a first dust removal member, the dust passing through the screen plate is processed by the first dust removal member, the discharge port is provided with a mesh plate, and further comprises:

[0006] Two frames, a slider is slidably arranged on the frame, a processing box is arranged on the frame, a first dust removal component is connected with the processing box, a driving component and a second dust removal component are arranged on the slider, the frame and the processing box, the slider is driven to slide back and forth by the driving component, the dust passing through the mesh plate is processed by the second dust removal component, a filter is arranged in the processing box, a cleaning component and a collecting bucket are arranged on the processing box, the filter is cleaned by the cleaning component, a three-way pipe is connected between the two processing boxes, and the free end of the three-way pipe is connected with an exhaust fan.

[0007] Furthermore, the first dust removal component includes an annular tube arranged on the fixed plate, the annular tube is connected with a delivery pipe and a plurality of air inlet heads, and the free end of the delivery pipe is connected with the processing box.

[0008] Furthermore, the driving member includes a rope winding wheel rotatably arranged on the processing box, a pull rope is wound around the rope winding wheel, a free end of the pull rope is connected to a slider, and a compression spring is arranged between the slider and the frame.

[0009] Furthermore, the second dust removal component includes a dust collector head arranged on the slider, a through hole is opened on the frame, an air inlet pipe is connected to the processing box, a free end of the air inlet pipe is connected to a hose, and the free end of the hose passes through the through hole and is connected to the dust collector head.

[0010] Furthermore, a protective member is provided on the hose, and the protective member is used to limit and protect the hose.

[0011] Furthermore, the protective member comprises an arc-shaped tube movably sleeved on the hose, and a counterweight block is arranged on the arc-shaped tube.

[0012] Furthermore, the cleaning part includes a sliding rod slidably arranged on the processing box, and a brush plate and a limit block are respectively arranged at both ends of the sliding rod, the brush plate is in contact with and overlaps the filter screen, a return spring sleeved on the sliding rod is arranged between the limit block and the processing box, a roller is rotatably arranged on the limit block, and a rotating rod is rotatably arranged on the processing box, and a cam is arranged on the rotating rod and is in contact with and overlaps the roller.

[0013] Furthermore, the opposite ends of the two rotating rods are fixedly connected, the rotating rods are provided with half gears, and the rope winding wheel is provided with full gears meshing with the half gears.

[0014] Furthermore, a knocking piece is provided on the slider and the frame, and when the slider slides back and forth, the knocking piece knocks the screen plate intermittently.

[0015] Furthermore, the knocking member includes a fixed rack arranged on the frame, a fixed frame is arranged on the sliding block, a cross bar and a vertical bar are rotatably arranged on the fixed frame, and the two are connected by a bevel gear assembly, a fixed gear meshing with the fixed rack is arranged on the cross bar, a turntable is arranged on the vertical bar, a moving rod is slidably arranged on the fixed frame, a knocking block and a fixed rod are respectively arranged at both ends of the moving rod, a waist hole is opened on the fixed rod, and a protrusion that slides with the waist hole is eccentrically arranged on the turntable.

[0016] The beneficial effects of this application are as follows:

[0017] When the present application is in use, the dust generated when sand and gravel pass through the feed port and the discharge port can be processed to avoid harm to the environment and workers, so it is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the structure of this application;

[0019] Figure 2 It is a three-dimensional diagram of some structures of this application;

[0020] Figure 3 It is a three-dimensional diagram of some structures of this application;

[0021] Figure 4 This application Figure 3 The enlarged view of point A in the middle;

[0022] Figure 5 This application Figure 3 The enlarged view of point B in the middle;

[0023] Figure 6 This application Figure 3 Enlarged view of point C in the middle;

[0024] Figure 7 This application Figure 3 A three-dimensional cross-sectional view of

[0025] Figure 8 This application Figure 7 Enlarged view of point D in the middle.

[0026] Figure numerals: 1, machine body; 2, feed inlet; 3, discharge outlet; 4, sieve plate; 5, fixing plate; 6, first dust removal member; 601, annular tube; 602, conveying tube; 603, air inlet head; 7, mesh plate; 8, frame; 9, slider; 10, processing box; 11, driving member; 1101, rope wheel; 1102, pull rope; 1103, extrusion spring; 12, second dust removal member; 1201, dust suction head; 1202, through hole; 1203, air inlet pipe; 1204, hose; 13, filter screen; 14, cleaning member; 1401, slide bar; 1402, brush plate; 1403, limit block; 1404 , return spring; 1405, roller; 1406, rotating rod; 1407, cam; 15, collecting bucket; 16, three-way pipe; 17, exhaust fan; 18, protective part; 1801, arc tube; 1802, counterweight; 19, half gear; 20, full gear; 21, knocking piece; 2101, fixed rack; 2102, fixed frame; 2103, cross bar; 2104, vertical bar; 2105, bevel gear assembly; 2106, fixed gear; 2107, turntable; 2108, moving rod; 2109, knocking block; 21010, fixed rod; 21011, waist hole; 21012, bump. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0028] like Figure 1-Figure 8As shown, a dust removal device for a crushing sand making machine proposed in an embodiment of the present application includes a body 1 and a feed port 2 and a discharge port 3 both arranged thereon, the feed port 2 and the discharge port 3 are distributed up and down, a sieve plate 4 and a fixed plate 5 are arranged on the feed port 2, the sieve plate 4 is in a vertical direction and is configured in a frustum shape, the sieve plate 4 is fixed on the feed port 2, the fixed plate 5 is in a horizontal direction and is fixed on the feed port 2, a first dust removal member 6 is arranged on the fixed plate 5, and the dust passing through the sieve plate 4 is processed by the first dust removal member 6, a mesh plate 7 is arranged on the discharge port 3, the mesh plate 7 is in a vertical direction and is configured in a cone shape, and the mesh plate 7 is fixed on the discharge port 3, and also includes:

[0029] Two frames 8, both frames 8 are located at the bottom of the machine body 1 and are symmetrically distributed, a slider 9 is slidably provided on the frame 8, the slider 9 slides in the horizontal direction, a processing box 10 is provided on the frame 8, the first dust removal member 6 is connected with the processing box 10, a driving member 11 and a second dust removal member 12 are provided on the slider 9, the frame 8 and the processing box 10, the slider 9 is driven by the driving member 11 to slide back and forth, and the dust passing through the mesh plate 7 is processed by the second dust removal member 12, a filter screen 13 is provided in the processing box 10, the filter screen 13 is in a vertical direction and is fixed in the processing box 10, a cleaning member 14 and a collecting bucket 15 are provided on the processing box 10, a through groove corresponding to the filter screen 13 is opened at the bottom of the processing box 10, the collecting bucket 15 is arranged at the bottom of the processing box 10 and corresponds to the through groove, the filter screen 13 is cleaned by the cleaning member 14, a three-way pipe 16 is connected between the two processing boxes 10, and the free end of the three-way pipe 16 is connected with an exhaust fan 17;

[0030] When in use, the exhaust fan 17 is turned on, and sand and gravel are put into the feed port 2. The sand and gravel will pass through the sieve plate 4, and the sieve plate 4 can prevent the sand and gravel from entering the first dust removal component 6. The first dust removal component 6 processes the dust passing through the sieve plate 4, and then the sand and gravel enter the crushing chamber of the machine body 1 for crushing. The crushed sand and gravel are discharged from the discharge port 3, and the sand and gravel pass through the mesh plate 7, and the mesh plate 7 can prevent the sand and gravel from entering the second dust removal component 12. The driving component 11 drives the slider 9 to slide back and forth in the horizontal direction, and passes through the second dust removal component 12. The dust piece 12 processes the dust passing through the mesh plate 7, and the first dust removal piece 6 and the second dust removal piece 12 discharge the dust into the processing box 10 together, and the dust is filtered by the filter 13, and the filter 13 is cleaned by the cleaning piece 14 to prevent the filter 13 from being blocked. The cleaned dust falls into the collection bucket 15 through the through groove, and the dust is centrally cleaned by the collection bucket 15. In actual use, the collection bucket 15 should be detachably connected to the processing box 10 to facilitate the pouring out of the collected dust;

[0031] In summary, when the present application is used, the dust generated when sand and gravel pass through the feed port 2 and the discharge port 3 can be processed to avoid harm to the environment and workers, and therefore it is more practical.

[0032] like Figure 2 As shown, in some embodiments, the first dust removal member 6 includes an annular tube 601 disposed on the fixed plate 5, the annular tube 601 is horizontally oriented and fixedly disposed on the fixed plate 5, the annular tube 601 is connected with a delivery tube 602 and a plurality of air inlet heads 603, the plurality of air inlet heads 603 are all horizontally oriented and are all funnel-shaped, the plurality of air inlet heads 603 are distributed in an annular array, the free end of the delivery tube 602 is connected with the processing box 10, the delivery tube 602 has two free ends in total, and the two free ends are respectively connected with two processing boxes 10;

[0033] Referring to the above, when in use, dust enters the air inlet head 603, the annular pipe 601, the delivery pipe 602 and the processing box 10 in sequence, and then the dust is filtered by the filter net 13 to achieve the processing of the dust passing through the screen plate 4.

[0034] like Figure 4-Figure 5 As shown, in some embodiments, the driving member 11 includes a rope wheel 1101 rotatably arranged on the processing box 10, the rope wheel 1101 is in a horizontal direction, a pull rope 1102 is wound around the rope wheel 1101, the free end of the pull rope 1102 is connected to the slider 9, the free end of the pull rope 1102 is fixedly connected to the slider 9, an extrusion spring 1103 is arranged between the slider 9 and the frame 8, the extrusion spring 1103 is in a horizontal direction and the two ends are respectively fixedly connected to the slider 9 and the frame 8;

[0035] Referring to the above, in the initial state, the extrusion spring 1103 is in a natural state, the slider 9 is in the initial position, and the rope wheel 1101 relaxes the pull rope 1102. When in use, the rope wheel 1101 is driven to rotate unidirectionally, and the rope wheel 1101 tightens the pull rope 1102. The pulling force of the pull rope 1102 drives the slider 9 to slide horizontally to the extreme position, forcing the extrusion spring 1103 to be squeezed, and then the extrusion spring 1103 will be reset to the natural state due to being squeezed, and the slider 9 slides to the initial position due to elastic potential energy, and the rope wheel 1101 relaxes the pull rope 1102, and this is repeated to drive the slider 9 to slide back and forth.

[0036] like Figure 3-Figure 6 As shown, in some embodiments, the second dust removal member 12 includes a dust suction head 1201 disposed on the slider 9, the dust suction head 1201 is horizontally oriented and fixedly disposed on the slider 9, the dust suction head 1201 is funnel-shaped, a through hole 1202 is provided on the frame 8, the through hole 1202 is horizontally oriented, an air intake pipe 1203 is connected to the processing box 10, a free end of the air intake pipe 1203 is connected to a hose 1204, and the free end of the hose 1204 passes through the through hole 1202 and is connected to the dust suction head 1201;

[0037] Referring to the above, when the slider 9 slides back and forth, it drives the dust head 1201 to move together, and the hose 1204 moves with the dust head 1201. The hose 1204 is guided through the through hole 1202, and the dust enters the dust head 1201, the hose 1204, the air inlet pipe 1203 and the processing box 10 in turn, and then the dust is filtered through the filter net 13 to achieve the processing of the dust passing through the mesh plate 7.

[0038] like Figure 6 As shown, in some embodiments, a protective member 18 is provided on the hose 1204, and the protective member 18 is used to limit and protect the hose 1204;

[0039] Referring to the above, when the slider 9 slides, the hose 1204 will move therewith. At this time, the hose 1204 is limited and protected by the protective member 18 to avoid movement interference caused by the hose 1204 and to avoid damage to the hose 1204.

[0040] like Figure 6 As shown, in some embodiments, the protection member 18 includes an arc-shaped tube 1801 movably mounted on the hose 1204, a counterweight 1802 is disposed on the arc-shaped tube 1801, and the arc-shaped tube 1801 and the counterweight 1802 are fixedly connected;

[0041] Referring to the above, when the slider 9 is in the initial position, the counterweight 1802 is in the initial position due to gravity. When the slider 9 slides to the extreme position, the counterweight 1802 moves downward to the extreme position, driving the arc tube 1801 to move together. Conversely, when the slider 9 returns to the initial position, the counterweight 1802 moves upward to the initial position. During this process, the arc tube 1801 can prevent the hose 1204 from bending, so as to limit and protect the hose 1204.

[0042] like Figure 4-Figure 8As shown, in some embodiments, the cleaning member 14 includes a slide bar 1401 slidably arranged on the processing box 10, the slide bar 1401 is in a vertical direction and slides in the vertical direction, and a brush plate 1402 and a limit block 1403 are respectively arranged at both ends of the slide bar 1401, the brush plate 1402 and the limit block 1403 are both in a horizontal direction and are fixedly connected to the slide bar 1401, the limit block 1403, the slide bar 1401 and the brush plate 1402 are distributed in sequence from top to bottom and form a step-like structure, the brush plate 1402 is located in the processing box 10, and the brush plate 1402 is in contact with the filter screen 13 and overlaps. A return spring 1404 sleeved on the slide bar 1401 is provided between the limit block 1403 and the processing box 10, the return spring 1404 is in a vertical direction and the two ends are respectively fixedly connected to the limit block 1403 and the processing box 10, a roller 1405 is rotatably provided on the limit block 1403, and the roller 1405 is in a horizontal direction, and a rotating rod 1406 is rotatably provided on the processing box 10, and the rotating rod 1406 is in a horizontal direction, and a cam 1407 that contacts and overlaps with the roller 1405 is provided on the rotating rod 1406, and the cam 1407 is in a vertical direction and fixed on the rotating rod 1406;

[0043] Referring to the above, when in use, the rotating rod 1406 is driven to rotate, driving the cam 1407 to rotate together, and the protruding part of the cam 1407 intermittently contacts and overlaps with the roller 1405. When the two contact and overlap, the roller 1405, the limit block 1403, the slide bar 1401 and the brush plate 1402 move downward together, forcing the reset spring 1404 to be squeezed. Conversely, when the protruding part of the cam 1407 is away from the roller 1405, the reset spring 1404 will be squeezed and reset to a natural state. The roller 1405, the limit block 1403, the slide bar 1401 and the brush plate 1402 move upward together, and this process is repeated to achieve a linear reciprocating motion of the brush plate 1402 in the vertical direction, thereby cleaning the filter 13.

[0044] like Figure 4 As shown, in some embodiments, the opposite ends of the two rotating rods 1406 are fixedly connected, and the rotating rod 1406 is provided with a half gear 19, which is vertically oriented and fixedly arranged on the rotating rod 1406, and the rope winding wheel 1101 is provided with a full gear 20 meshing with the half gear 19, which is vertically oriented and fixedly arranged on the rope winding wheel 1101;

[0045] Referring to the above, when in use, one of the rotating rods 1406 is driven to rotate to achieve synchronous rotation of the two rotating rods 1406. When the rotating rod 1406 rotates, it drives the half gear 19 to rotate together. The full gear 20 will first rotate unidirectionally due to the meshing action, thereby driving the rope winding wheel 1101 to rotate unidirectionally. After that, the half gear 19 is not engaged with the full gear 20, and the rope winding wheel 1101 loosens the pull rope 1102 due to elastic potential energy, thereby making the operation more convenient.

[0046] like Figure 3 As shown, in some embodiments, a knocking member 21 is provided on the slider 9 and the frame 8, and when the slider 9 slides back and forth, the knocking member 21 intermittently knocks the screen 7;

[0047] As mentioned above, during use, some dust will adhere to the mesh plate 7. When the slider 9 slides back and forth, the knocking member 21 intermittently knocks the mesh plate 7, thereby shaking off the dust attached to the mesh plate 7 to improve the dust handling effect.

[0048] like Figure 5 As shown, in some embodiments, the knocking member 21 includes a fixed rack 2101 arranged on the frame 8, the fixed rack 2101 is horizontal and fixed on the frame 8, a fixed frame 2102 is arranged on the slider 9, the fixed frame 2102 is rotatably arranged with a cross bar 2103 and a vertical bar 2104, and the two are connected by a bevel gear assembly 2105, the cross bar 2103 is horizontal, the vertical bar 2104 is vertical, the bevel gear assembly 2105 is composed of two meshing bevel gears, the two bevel gears are respectively fixed on the cross bar 2103 and the vertical bar 2104, the cross bar 2103 is provided with a fixed gear 2106 meshing with the fixed rack 2101, and the fixed gear 2106 is vertical. And it is fixed on the crossbar 2103, a turntable 2107 is arranged on the vertical bar 2104, the turntable 2107 is in a horizontal direction and is fixed on the vertical bar 2104, a moving rod 2108 is slidably arranged on the fixed frame 2102, the moving rod 2108 is in a horizontal direction and slides in the horizontal direction, a knocking block 2109 and a fixed rod 21010 are respectively arranged at both ends of the moving rod 2108, the knocking block 2109, the moving rod 2108 and the fixed rod 21010 are fixedly connected in sequence and form a step-like structure, a waist hole 21011 is opened on the fixed rod 21010, the waist hole 21011 is in a horizontal direction, a convex block 21012 that slides with the waist hole 21011 is eccentrically arranged on the turntable 2107, and the convex block 21012 is fixed on the turntable 2107;

[0049] Referring to the above, when the slider 9 slides back and forth, it drives the fixed frame 2102 to move together, and the fixed gear 2106 will reciprocate due to the meshing action, driving the cross bar 2103 to reciprocate together, and the vertical rod 2104 is driven to reciprocate together through the bevel gear assembly 2105. The turntable 2107 reciprocates with the vertical rod 2104, and the protrusion 21012 slides back and forth in the waist hole 21011, thereby driving the fixed rod 21010, the moving rod 2108 and the knocking block 2109 to reciprocate in a straight line, and the knocking block 2109 intermittently knocks the screen plate 7.

[0050] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dust removal device for a crushing sand making machine, comprising a sand making machine body (1) and a feed inlet (2) and a discharge outlet (3) both arranged on the sand making machine body, It is characterized in that The feed port (2) is provided with a sieve plate (4) and a fixed plate (5), the fixed plate (5) is provided with a first dust removal member (6), and the dust passing through the sieve plate (4) is processed by the first dust removal member (6), and the discharge port (3) is provided with a mesh plate (7), and further comprises: Two frames (8), a slider (9) is slidably arranged on the frame (8), a processing box (10) is arranged on the frame (8), a first dust removal member (6) is connected with the processing box (10), a driving member (11) and a second dust removal member (12) are arranged on the slider (9), the frame (8) and the processing box (10), the slider (9) is driven to slide back and forth by the driving member (11), and the dust passing through the mesh plate (7) is processed by the second dust removal member (12), a filter screen (13) is arranged in the processing box (10), a cleaning member (14) and a collecting bucket (15) are arranged on the processing box (10), and the filter screen (13) is cleaned by the cleaning member (14), a three-way pipe (16) is connected between the two processing boxes (10), and the free end of the three-way pipe (16) is connected with an exhaust fan (17); The driving member (11) comprises a rope winding wheel (1101) rotatably arranged on the processing box (10), a pull rope (1102) is wound around the rope winding wheel (1101), a free end of the pull rope (1102) is connected to a slider (9), and a compression spring (1103) is arranged between the slider (9) and the frame (8); The cleaning member (14) comprises a slide bar (1401) slidably arranged on the processing box (10), a brush plate (1402) and a limit block (1403) are respectively arranged at two ends of the slide bar (1401), the brush plate (1402) and the filter screen (13) are in contact and overlapped connection, a return spring (1404) sleeved on the slide bar (1401) is arranged between the limit block (1403) and the processing box (10), a roller (1405) is rotatably arranged on the limit block (1403), a rotating rod (1406) is rotatably arranged on the processing box (10), and a cam (1407) is arranged on the rotating rod (1406) and is in contact and overlapped connection with the roller (1405); The opposite ends of the two rotating rods (1406) are fixedly connected, the rotating rod (1406) is provided with a half gear (19), and the rope winding wheel (1101) is provided with a full gear (20) meshing with the half gear (19).

2. The dust removal device for a crushing sand making machine according to claim 1, It is characterized in that The first dust removal component (6) comprises an annular tube (601) arranged on the fixed plate (5), the annular tube (601) being connected to a delivery tube (602) and a plurality of air inlet heads (603), and the free end of the delivery tube (602) being connected to the processing box (10).

3. The dust removal device for a crushing sand making machine according to claim 1, It is characterized in that The second dust removal component (12) comprises a dust collection head (1201) arranged on the slider (9); a through hole (1202) is provided on the frame (8); an air intake pipe (1203) is connected to the processing box (10); the free end of the air intake pipe (1203) is connected to a hose (1204); the free end of the hose (1204) passes through the through hole (1202) and is connected to the dust collection head (1201).

4. The dust removal device for a crushing sand making machine according to claim 3, It is characterized in that The hose (1204) is provided with a protective member (18), and the protective member (18) is used to limit and protect the hose (1204).

5. The dust removal device for a crushing sand making machine according to claim 4, It is characterized in that The protective member (18) comprises an arc-shaped tube (1801) movably sleeved on the hose (1204), and a counterweight block (1802) is arranged on the arc-shaped tube (1801).

6. The dust removal device for a crushing sand making machine according to claim 1, It is characterized in that The slider (9) and the frame (8) are provided with a knocking member (21), and when the slider (9) slides back and forth, the knocking member (21) knocks the screen plate (7) intermittently.

7. The dust removal device for a crushing sand making machine according to claim 6, It is characterized in that The knocking member (21) comprises a fixed rack (2101) arranged on the frame (8); a fixed frame (2102) is arranged on the slider (9); a crossbar (2103) and a vertical bar (2104) are rotatably arranged on the fixed frame (2102) and the two are transmission-connected via a bevel gear assembly (2105); a fixed gear (2106) meshing with the fixed rack (2101) is arranged on the crossbar (2103); and the vertical bar (2104) is rotatably arranged on the fixed frame (2102). A rotating disk (2107) is arranged on the (2104), a moving rod (2108) is slidably arranged on the fixed frame (2102), a knocking block (2109) and a fixed rod (21010) are respectively arranged at both ends of the moving rod (2108), a waist hole (21011) is opened on the fixed rod (21010), and a protrusion (21012) slidably matched with the waist hole (21011) is eccentrically arranged on the rotating disk (2107).

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