CN219776880U

CN219776880U - Material weighing device

Info

Publication number: CN219776880U
Application number: CN202320954035.3U
Authority: CN
Inventors: 李泽虎; 易勇; 牛灿卫; 贺孟; 赵阔
Original assignee: China Construction Machinery Co ltd
Current assignee: China Construction Machinery Co ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-09-29
Anticipated expiration: 2033-04-25

Abstract

The utility model provides a material weighing device, comprising: aggregate piece, sensing subassembly, fender material piece and first drive arrangement. The first driving device is used for driving the material blocking piece to switch to a first state, the material is filled into the material collecting piece through the first opening, and meanwhile the sensing assembly is used for detecting the weight of the material. When the weight of the material reaches the required amount, the material injection is stopped, and the first driving device is used for switching to drive the material blocking piece to be switched to the second state, so that the material with the required amount is discharged out of the material collecting piece. By the mode, the material collecting piece can temporarily store materials, the sensing assembly is used for detecting the weight of the materials, and the material blocking piece is opened to discharge the materials with required quantity; the automatic measuring and injecting device can measure the amount of added materials more accurately, realize automatic measurement and injection simultaneously, save labor and improve working efficiency.

Description

Material weighing device

Technical Field

The present disclosure relates generally to the field of material weighing technology, and in particular, to a material weighing apparatus.

Background

The novel multiphase composite material can be obtained by doping the steel fibers which are distributed in a random way into the common concrete, the steel fibers which are distributed in a random way can effectively prevent the expansion of cracks and the formation of macroscopic cracks in the concrete, and the tensile, bending, impact and fatigue resistance of the concrete can be obviously improved, so that the concrete has better ductility.

In the steel fiber concrete production process, the traditional adding mode is usually completed by manual adding. Because the addition amount is inaccurate in a manual addition mode, the error is larger, and after repeated addition for multiple times, steel fibers doped in concrete are also uneven, so that the quality of subsequent engineering is affected; meanwhile, the manual adding mode has low working efficiency and can not meet and adapt to the requirements of modern automatic production in the current society.

Disclosure of Invention

In view of the above-described drawbacks or deficiencies of the prior art, it is desirable to provide a material weighing apparatus.

The utility model provides a material weighing device, comprising:

the material collecting device comprises a material collecting piece, a material collecting device and a material collecting device, wherein a weighing space is arranged in the material collecting piece and used for temporarily storing materials; the material collecting piece is provided with a first opening and a second opening, and the first opening and the second opening are communicated with the weighing space; the material enters the collecting piece from the first opening and is poured out of the collecting piece from the second opening;

the support frame is arranged on the mounting frame; the aggregate piece is mounted on the support frame;

the detection end of the sensing component is arranged on the supporting frame and used for detecting the weight of the material;

one end of the material blocking piece is hinged with the second opening; the material blocking piece is provided with a first state and a second state; when the material blocking piece is in the first state, the material blocking piece is abutted with the second opening and used for blocking the material from being discharged from the second opening; when the material blocking piece is in the second state, the material blocking piece rotates relative to the second opening, and the second opening is opened, so that the material is discharged from the second opening;

the first driving device is rotatably arranged on the collecting piece; the driving end of the first driving device is hinged with the other end of the material blocking piece, and the first driving device is used for driving the material blocking piece to rotate relative to the material collecting piece.

According to the technical scheme provided by the embodiment of the utility model, the material weighing device further comprises:

the conveying piece is provided with a first end and a second end, and the first end is arranged below the second opening and is used for receiving poured materials; the second end stretches into the stirring main machine and is used for guiding the materials into the stirring main machine.

According to the technical scheme provided by the embodiment of the utility model, the material blocking piece comprises:

one end of the material blocking part is hinged with the outer side wall of the second opening; when the material blocking part is in the first state, the material blocking part is abutted with the second opening to block the material from pouring out; when the material blocking part is in a second state, the material blocking part rotates relative to the second opening, and the second opening is opened to enable the material to be discharged from the second opening;

the connecting part is fixedly connected with the material blocking part and is perpendicular to the material blocking part, and one end of the connecting part, which is far away from the material blocking part, is hinged with the driving end of the first driving device.

According to the technical scheme provided by the embodiment of the utility model, the connecting part is provided with two end parts far away from the material blocking part to form an avoidance space; the material weighing device further comprises:

the guide plate, the one end of guide plate with the surface fixed connection of one side under the second opening, the other end stretches into in the conveying member, the guide plate passes through dodge the space for with the material direction carry extremely in the conveying member.

According to the technical scheme provided by the embodiment of the utility model, the first end of the conveying piece is hinged on the mounting frame;

the outer side wall of the conveying piece is connected with a first vibration assembly, and the first vibration assembly comprises a first vibration assembly body and a first vibration assembly driving end; the first vibration assembly body is fixedly arranged on the mounting frame; the driving end of the first vibration component is hinged with the outer side wall of the second end and is used for driving the conveying piece to move relative to the first vibration component body.

According to the technical scheme provided by the embodiment of the utility model, a vibration gap is reserved between the second end and the stirring host.

According to the technical scheme provided by the embodiment of the utility model, the abutting part is fixedly arranged at the port of the first end and is used for abutting against the material blocking piece to block the gap between the first end and the second opening.

According to the technical scheme provided by the embodiment of the utility model, one side of the abutting part, which is close to the material blocking piece, is provided with the protruding part, and the protruding part is used for blocking the material blocking piece.

According to the technical scheme provided by the embodiment of the utility model, the second vibration assembly is arranged between the outer side wall of the collecting piece and the supporting frame and is used for driving the collecting piece to move along the first direction.

According to the technical scheme provided by the embodiment of the utility model, the second vibration assembly comprises:

the sliding rail is fixedly arranged on the supporting frame along the first direction;

the sliding block can be slidably arranged on the sliding rail;

the second vibration device comprises a second vibration device body and a second vibration device driving end; the driving end of the second vibration device is connected with the outer side wall of the collecting piece and is used for driving the collecting piece to move relative to the second vibration device body.

The utility model has the beneficial effects that:

the first driving device is used for driving the material blocking piece to switch to a first state, the material is filled into the material collecting piece through the first opening, and meanwhile the sensing assembly is used for detecting the weight of the material. When the weight of the material reaches the required amount, the material injection is stopped, and the first driving device is used for switching to drive the material blocking piece to be switched to the second state, so that the material with the required amount is discharged out of the material collecting piece. By the mode, the material collecting piece can temporarily store materials, the sensing assembly is used for detecting the weight of the materials, and the material blocking piece is opened to discharge the materials with required quantity; the automatic measuring and injecting device can measure the amount of added materials more accurately, realize automatic measurement and injection simultaneously, save labor and improve working efficiency.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of a material weighing device according to the present utility model;

FIG. 2 is a schematic view of a material weighing device in a first state of a material blocking member;

FIG. 3 is a schematic view of a material retainer;

FIG. 4 is a schematic view of the structure of the abutting portion;

FIG. 5 is a top view of a second vibration assembly;

wherein: 1. a collecting member; 2. a sensing assembly; 3. a material blocking piece; 4. a first driving device; 5. a first opening; 6. a second opening; 7. a conveying member; 8. a stirring main machine; 9. a first end; 10. a second end; 11. a guide plate; 12. a first vibration assembly; 13. an abutting portion; 14. a boss; 15. a material blocking part; 16. a connection part; 17. a second vibration assembly; 18. a slide rail; 19. a slide block; 20. and a second vibration device.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the utility model are shown in the drawings.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1-2, a schematic diagram of a material weighing apparatus according to the present embodiment includes:

the material collecting device comprises a material collecting piece 1, wherein a weighing space is formed in the material collecting piece 1 and used for temporarily storing materials; the collecting piece 1 is provided with a first opening 5 and a second opening 6, and the first opening 5 and the second opening 6 are communicated with the weighing space; the material enters the collecting piece 1 from the first opening 5 and is poured out of the collecting piece 1 from the second opening 6;

a support frame 21, the support frame 21 being provided on the mounting frame; the aggregate 1 is mounted on the support frame 21;

the sensing assembly 2, the detection end of the sensing assembly 2 is installed on the supporting frame 21 and used for detecting the weight of materials;

the material blocking piece 3, one end of the material blocking piece 3 is hinged with the second opening 6; the material blocking piece 3 has a first state and a second state; when in the first state, the material blocking piece 3 is abutted with the second opening 6 and used for blocking the material from being discharged from the second opening 6; when in the second state, the material blocking piece 3 rotates relative to the second opening 6, and opens the second opening 6 to enable the material to be discharged from the second opening 6;

the first driving device 4 is rotatably arranged on the collecting piece 1; the driving end of the first driving device 4 is hinged with the other end of the material blocking piece 3, and the first driving device 4 is used for driving the material blocking piece 3 to rotate relative to the material collecting piece 1.

In some embodiments, the aggregate 1 is funnel-shaped, with the first opening 5 being larger than the second opening 6. The larger first opening 5 facilitates the rapid injection of material into the aggregate 1 and the smaller second opening 6 facilitates the blocking of material leakage by the stopper 3.

In some embodiments, the sensing component 2 is a pressure sensor, the detection end of which is arranged between the mounting frame and the supporting frame 21, and the pressure of the supporting frame 21 to the detection end is detected and a pressure signal is transmitted to the PLC weighing module; and stopping injecting the material when the pressure reaches the weighing threshold set by the PLC.

Specifically, the pressure sensor detects the dead weights of the aggregate 1, the support frame 21, the baffle 3, the guide plate 11, the first driving device 4 and the second vibration assembly 17 when no material is added, and detects the total weight of the material and the aggregate 1, the support frame 21, the baffle 3, the guide plate 11, the first driving device 4 and the second vibration assembly 17 when the material is added, and the weight of the material is calculated by subtracting the dead weight from the total weight. Before weighing, an operator is required to input the weight of the required material into a PLC weighing module, and the PLC weighing module takes the input weight of the material as a weighing threshold value.

In some embodiments, the material blocking member 3 is larger than the second opening 6, and when the material blocking member 3 is in the first state and abuts against the second opening 6, the material blocking member can seal the second opening 6, so as to prevent the material from leaking.

In some embodiments, the first driving device 4 is a telescopic cylinder, one end of which is hinged on the outer side wall of the collecting member 1, and the other end of which is hinged with the blocking member 3.

When the material piece 3 needs to be cut and shifted to a first state, the driving end of the first driving device 4 is controlled to shrink relative to the material piece 1, and then the material blocking piece 3 is driven to rotate forward relative to the material piece 1, so that the material blocking piece 3 is finally abutted with the second opening 6, and leakage of materials is prevented.

When the material piece 3 needs to be cut and shifted to a second state, the driving end of the first driving device 4 is controlled to extend out relative to the material piece 1, and then the material blocking piece 3 is driven to reversely rotate relative to the material piece 1, and finally the material blocking piece 3 and the second opening 6 are separated from each other, so that materials can be discharged through the second opening 6.

In some embodiments, an arch breaking device is also installed inside the aggregate 1; the arch breaking device can break the stable structure formed randomly among materials, reduce the problem of agglomeration and accumulation of fiber materials and ensure smooth discharging.

Further, the material weighing device further comprises:

a conveyor 7, said conveyor 7 having a first end 9 and a second end 10, said first end 9 being arranged below said second opening 6 for receiving poured material; the second end 10 extends into the stirring main machine 8 and is used for guiding materials into the stirring main machine 8.

In some embodiments, the conveying member 7 is configured to receive the material discharged from the second opening 6 and guide the material into the stirring main machine 8. The stirring host 8 is used for fully mixing the weighed materials with the materials of other materials, and finally realizing the uniform and separate effects of the materials.

Further, referring to fig. 3, the stopper 3 includes:

a blocking part 15, wherein one end of the blocking part 15 is hinged with the outer side wall of the second opening 6; when the material blocking piece 3 is in the first state, the material blocking part 15 is abutted with the second opening 6 to block the material from pouring out; when the material blocking part 3 is in the second state, the material blocking part 15 rotates relative to the second opening 6, and opens the second opening 6 to enable the material to be discharged from the second opening 6;

the connecting part 16, connecting part 16 with keep off material portion 15 fixed connection and mutually perpendicular setting, connecting part 16 keep away from keep off the one end of material portion 15 with the drive end of first drive arrangement 4 articulates.

In some embodiments, the structure of the blocking member 3 is shown in fig. 3, and one end of the blocking portion 15 is hinged to the side of the outer side wall of the second opening 6, so that the blocking portion 15 can rotate relative to the second opening 6.

The connecting part 16 and the material blocking part 15 are mutually perpendicular, so that the connecting part 16 can block the space parallel to the two sides of the material blocking part 15; when the material blocking piece 3 is in the second state and the material is poured out from the second opening 6, the material is prevented from falling to the outside from the space parallel to the two sides of the material blocking part 15, and further, errors are prevented from being generated between the amount of the weighed material and the amount actually input into the stirring main machine 8.

The end of the connecting part 16 far away from the material blocking part 15 is hinged with the driving end of the first driving device 4, so that the rotation moment of the material blocking piece 3 can be increased, and the material blocking piece 3 can be driven to rotate more easily; meanwhile, when the material blocking piece 3 is in the first state, the material blocking portion 15 can be tightly abutted with the second opening 6, and the leakage of materials due to gaps is avoided.

Further, the connecting portion 16 is provided with two end portions far away from the material blocking portion 15 to form an avoidance space; the material weighing device further comprises:

the deflector 11, the one end of deflector 11 with the surface fixed connection of one side under the second opening 6, the other end stretches into in the conveying member 7, deflector 11 passes through dodge the space for with the material direction carry extremely in the conveying member 7.

In some embodiments, a gap is typically created between the first end 9 of the transport 7 and the second opening 6; therefore, the mode that one end of the guide plate 11 stretches into the conveying piece 7 can play a role in receiving materials, and the materials can conveniently enter the conveying piece 7.

The length of the material blocking portion 15 is smaller than that of the connecting portion 16, and when the two portions are perpendicular to each other, one end of the connecting portion 16 away from the material blocking portion 15 may have a space for avoiding, that is, a space at a lower end of the material blocking portion 15 in fig. 3. The avoidance space is formed, so that the material blocking piece 3 can not generate motion interference with the guide plate 11 in the rotating process, and the material blocking piece 3 can be ensured to normally rotate.

Further, the first end 9 of the conveyor 7 is hingedly mounted on the mounting frame;

the outer side wall of the conveying piece 7 is connected with a first vibration component 12, and the first vibration component 12 comprises a first vibration component 12 body and a first vibration component 12 driving end; the first vibration assembly 12 body is fixedly arranged on the mounting frame; the driving end of the first vibration component 12 is hinged to the outer side wall of the second end 10, and is used for driving the conveying member 7 to move relative to the first vibration component 12 body.

In some embodiments, the conveying member 7 is in a pipe shape, and is obliquely arranged when conveying materials, so that the materials can conveniently enter the stirring host 8 through the conveying member 7.

In some embodiments, the first vibration component 12 is a pneumatic vibrator, so that the material can be prevented from agglomerating in the conveying member 7, the falling is influenced, the amount of the material added at a time is further ensured, and the error is reduced. Meanwhile, the pneumatic vibrator is simple in structure and easy to maintain.

Further, a vibration gap is reserved between the second end 10 and the stirring main machine 8.

In some embodiments, when the conveying member 7 vibrates under the drive of the first vibration assembly 12, the second end 10 and the stirring main machine 8 can generate relative motion; therefore, a vibration gap is reserved between the two, so that the phenomenon that the side wall of the second end 10 collides with the stirring main machine 8 to cause the stirring main machine 8 to break down can be avoided.

Further, an abutting portion 13 is fixedly mounted at the port of the first end 9, and the abutting portion 13 is used for abutting against the material blocking piece 3 to block a gap between the first end 9 and the second opening 6.

In some embodiments, two abutting portions 13 are provided, the material blocking member 3 is disposed between the two abutting portions 13, and an inner side wall of the abutting portion 13 abuts against an outer side wall of the material blocking member 3 and can slide relatively. Because the conveying member 7 is in a pipeline shape and a space is required to be reserved for the rotation of the material blocking member 3, a larger interval gap is reserved between the first end 9 and the second opening 6; when the material is poured out, the material may come back out of the void to the outside, resulting in an error between the injected material and the desired amount. Therefore, the abutting portion 13 is additionally provided at the first end 9, so that a gap between the first end 9 and the second opening 6 can be blocked, and the material can be prevented from falling outside.

Further, referring to fig. 4, a side of the abutting portion 13, which is close to the material blocking member 3, is provided with a protruding portion 14, and the protruding portion 14 is used for shielding the material blocking member 3.

In some embodiments, the protruding portion 14 can shield the material blocking member 3, so as to prevent the material from leaking out of the gap at the upper end of the abutting portion 13 during the process of pouring out the material.

Further, a second vibration assembly 17 is installed between the outer sidewall of the aggregate 1 and the supporting frame 21, and the second vibration assembly 17 is used for driving the aggregate 1 to move along the first direction.

In some embodiments, the second vibration component 17 is mounted on the mounting frame, and is used for driving the aggregate 1 to reciprocate along the first direction at high frequency to generate vibration, so as to avoid the aggregation of materials in the aggregate 1 and further influence the blanking.

Further, referring to fig. 5, the second vibration assembly 17 includes:

a slide rail 18, the slide rail 18 being fixedly mounted on the support frame 21 along a first direction;

a slider 19, the slider 19 being slidably mounted on the slide rail 18;

the second vibration device 20, the second vibration device 20 includes a second vibration device 20 body and a second vibration device 20 driving end; the driving end of the second vibration device 20 is connected with the outer side wall of the collecting member 1, and is used for driving the collecting member 1 to move relative to the second vibration device 20 body.

In some embodiments, the second vibration device 20 is a pneumatic vibrator.

In some embodiments, the blocking member 3 is fixedly mounted on the sliding block 19, the sliding block 19 is slidably mounted on the sliding rail 18, and the second vibration device 20 drives the sliding block 19 and the blocking member 3 to reciprocate along the first direction relative to the sliding rail 18 at a high frequency, so that the blocking member 1 is prevented from agglomerating, and the blanking is further affected.

In some embodiments, the detection end of the sensing component 2 is disposed at one end of the sliding rail 18, and when the aggregate 1 is driven by the second vibration device 20 to vibrate, the detection end of the sensing component 2 and the sliding rail 18 are relatively fixed and cannot vibrate together with the aggregate 1, so that abrasion of the detection end of the sensing component 2 caused by vibration can be reduced, and the service life is prolonged.

The working process comprises the following steps:

s1: the driving end of the first driving device 4 contracts to drive the material blocking piece 3 to rotate forward to be switched to a first state, so that the material blocking piece 3 is tightly abutted with the second opening 6, and the second opening 6 is closed;

s2: continuously injecting materials into the aggregate 1, and simultaneously detecting the total weight of the aggregate 1 and the materials by using the sensing assembly 2;

s3: stopping injecting the material when the total weight reaches the sum of the weighing threshold and the self weight of the aggregate 1;

s4: the driving end of the first driving device 4 extends out to drive the material blocking piece 3 to reversely switch to a second state, so that the material blocking piece 3 and the second opening 6 are separated from each other, and the second opening 6 is opened;

s5: the first vibration component 12 drives the conveying piece 7 to vibrate; the second vibration device 20 drives the material collecting piece 1 to vibrate, so that materials smoothly enter the stirring main machine 8 from the material collecting piece 1 through the conveying piece 7.

The above description is only illustrative of the preferred embodiments of the present utility model and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the utility model referred to in the present utility model is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present utility model (but not limited to) having similar functions are replaced with each other.

Claims

1. A material weighing apparatus disposed on a mounting bracket, comprising:

the material collecting device comprises a material collecting piece (1), wherein a weighing space is formed in the material collecting piece (1) and used for temporarily storing materials; the collecting piece (1) is provided with a first opening (5) and a second opening (6), and the first opening (5) is communicated with the second opening (6) to form the weighing space; the material enters the collecting piece (1) from the first opening (5) and is poured out of the collecting piece (1) from the second opening (6);

-a support frame (21), said support frame (21) being arranged on said mounting frame; the aggregate (1) is mounted on the support frame (21);

the sensing assembly (2), the detection end of the sensing assembly (2) is installed on the supporting frame (21) and used for detecting the weight of materials;

the material blocking piece (3), one end of the material blocking piece (3) is hinged with the second opening (6); the material blocking piece (3) has a first state and a second state; when in the first state, the material blocking piece (3) is abutted with the second opening (6) and used for blocking the material from being discharged from the second opening (6); when in the second state, the material blocking piece (3) rotates relative to the second opening (6), and the second opening (6) is opened, so that the material is discharged from the second opening (6);

the first driving device (4) is rotatably arranged on the collecting piece (1); the driving end of the first driving device (4) is hinged with the other end of the material blocking piece (3), and the first driving device (4) is used for driving the material blocking piece (3) to rotate relative to the material collecting piece (1).

2. A material weighing apparatus according to claim 1, wherein said material weighing apparatus further comprises:

-a conveyor (7), the conveyor (7) having a first end (9) and a second end (10), the first end (9) being arranged below the second opening (6) for receiving the poured material; the second end (10) stretches into the stirring main machine (8) and is used for guiding materials into the stirring main machine (8).

3. A material weighing device according to claim 2, characterized in that the material stop (3) comprises:

a material blocking part (15), wherein one end of the material blocking part (15) is hinged with the outer side wall of the second opening (6); when the material blocking piece (3) is in a first state, the material blocking part (15) is abutted with the second opening (6) to block pouring of materials; when the material blocking part (3) is in a second state, the material blocking part (15) rotates relative to the second opening (6), and the second opening (6) is opened to enable the material to be discharged from the second opening (6);

the connecting part (16), connecting part (16) with keep off material portion (15) fixed connection and mutually perpendicular setting, connecting part (16) keep away from keep off the one end of material portion (15) with the drive end of first drive arrangement (4) articulates.

4. A material weighing device according to claim 3, characterized in that the connecting part (16) is provided with two end parts which are far away from the material blocking part (15) and form an avoidance space; the material weighing device further comprises:

the guide plate (11), the one end of guide plate (11) with the surface fixed connection of one side under second opening (6), the other end stretches into in carrying piece (7), guide plate (11) are passed through dodge the space is used for carrying the material direction extremely in carrying piece (7).

5. A material weighing device according to claim 2, characterized in that the first end (9) of the conveying member (7) is hinged to the mounting frame;

the outer side wall of the conveying piece (7) is connected with a first vibration assembly (12), and the first vibration assembly (12) comprises a first vibration assembly (12) body and a first vibration assembly (12) driving end; the first vibration assembly (12) body is fixedly arranged on the mounting frame; the driving end of the first vibration assembly (12) is hinged with the outer side wall of the second end (10) and is used for driving the conveying piece (7) to move relative to the body of the first vibration assembly (12).

6. A material weighing apparatus according to claim 5, wherein a vibration gap is left between said second end (10) and said stirring main body (8).

7. A material weighing device according to claim 2, characterized in that an abutment (13) is also fixedly mounted at the port of the first end (9), said abutment (13) being adapted to abut the stopper (3) shielding the gap between the first end (9) and the second opening (6).

8. A material weighing device according to claim 7, characterized in that the abutment (13) has a projection (14) on the side close to the stopper (3), which projection (14) is intended to shield the stopper (3).

9. A material weighing device according to claim 1, characterized in that a second vibration assembly (17) is mounted between the outer side wall of the collecting member (1) and the supporting frame (21), said second vibration assembly (17) being adapted to drive the collecting member (1) to move in the first direction.

10. A material weighing apparatus according to claim 9, wherein said second vibration assembly (17) comprises:

a slide rail (18), the slide rail (18) being fixedly mounted on the support frame (21) along a first direction;

a slider (19), the slider (19) being slidably mounted on the slide rail (18);

the second vibration device (20), the second vibration device (20) comprises a second vibration device (20) body and a second vibration device (20) driving end; the driving end of the second vibration device (20) is connected with the outer side wall of the collecting piece (1) and is used for driving the collecting piece (1) to move relative to the second vibration device (20) body.