CN116412962A

CN116412962A - Flywheel detection table

Info

Publication number: CN116412962A
Application number: CN202310325124.6A
Authority: CN
Inventors: 陈国祥; 王纯孟
Original assignee: Sichuan Cementhai Machinery Co ltd
Current assignee: Sichuan Cementhai Machinery Co ltd
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-07-11

Abstract

The invention provides a flywheel detection table, which relates to the technical field of detection equipment and comprises a base; the detection seat is fixed on the base; the rotating shaft is rotationally connected with the detection seat, and the flywheel is fixed on the rotating shaft; the movable seat is movably arranged on the base; the ejector rod is connected to the movable seat, is coaxial with the rotating shaft, and is provided with a connecting part at one end facing the rotating shaft, and the connecting part is spliced with one end of the rotating shaft; when the flywheel is accidentally separated from the rotating shaft, the flywheel can move to the ejector rod; the transverse moving mechanism is used for enabling the ejector rod to be close to or far away from the rotating shaft; the cross rod is inserted on the movable seat and can transversely move; and the buffer mechanism plays a role in buffering the transverse movement of the cross rod. When the flywheel is accidentally separated from the rotating shaft and moves to the ejector rod, the buffer mechanism can buffer the flywheel, and the gear ring of the flywheel cannot collide with other objects, so that the flywheel is not easy to damage. When the stability of the rotation of the flywheel is detected, the flywheel is not required to be shielded, and an operator can intuitively observe the state of the flywheel.

Description

Flywheel detection table

Technical Field

The invention relates to the technical field of detection equipment, in particular to a flywheel detection table.

Background

The flywheel is an important part of the engine, the rim of the flywheel is embedded with a gear ring, a plurality of holes are formed in the side face of the flywheel, and key grooves are formed in the inner sides of the holes in the center of the flywheel. A flywheel connected to the output of the crankshaft for storing rotational kinetic energy during rotational movement, which tends to resist rotational speedChanging when the power source is to

When a variable moment acts, the flywheel can reduce the fluctuation of the rotating speed, so that the rotating motion is smoother.

In the production process of the flywheel, the stability of the flywheel in the rotation process needs to be sampled and detected, and the publication number is

The patent document discloses a flywheel stability test board, and it shelters from the flywheel through two protection frames that can open and shut, prevents to appear unexpected in the in-process of test, causes the flywheel to break away from driving motor output shaft and hurt the condition emergence of people.

The flywheel stability test board can play a role in protection through shielding the rotating flywheel, but the following technical problems to be improved still exist:

1. in the process of rotating the flywheel, the flywheel is shielded by the protection frame, so that an operator is difficult to intuitively observe the condition of the flywheel.

2. If the flywheel accidentally breaks away from the output shaft of the driving motor, the flywheel flies away from the output shaft of the driving motor under the action of inertia and collides with the protection frame severely, and even if a buffer structure made of rubber materials is arranged in the protection frame, the gear ring at the rim of the flywheel is difficult to ensure not to be damaged.

Disclosure of Invention

In view of the above, the present invention provides a flywheel detecting platform, which solves the technical problems set forth in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions:

a flywheel detection platform mainly comprises:

a base;

the detection seat is fixed on the base;

the rotating shaft is rotationally connected with the detection seat, and the flywheel is fixed on the rotating shaft;

the movable seat is movably arranged on the base;

the ejector rod is connected to the movable seat, is coaxial with the rotating shaft, and is provided with a connecting part at one end facing the rotating shaft, and the connecting part is spliced with one end of the rotating shaft; when the flywheel is accidentally separated from the rotating shaft, the flywheel can move to the ejector rod;

the transverse moving mechanism is used for enabling the ejector rod to be close to or far away from the rotating shaft;

the cross rod is inserted on the movable seat and can transversely move; and

The buffer mechanism can play a role in buffering the transverse movement of the cross rod.

In some embodiments of the invention, the diameter of the stem is equal to the diameter of the shaft.

In some embodiments of the invention, the traversing mechanism comprises a traversing cylinder.

In some embodiments of the invention, a buffer head is fixed to an end of the cross bar facing the detection seat.

In some embodiments of the invention, the cushioning mechanism comprises:

the fixed plate is fixedly arranged on the movable seat;

the connecting rod is longitudinally spliced on the fixed plate;

the top plate is fixed at the upper end of the connecting rod; and

One end of the buffer spring is connected with the top plate, and the other end of the buffer spring is connected with the fixed plate;

wherein, the horizontal pole is connected with the roof transmission, and when the horizontal pole moved to the right, the roof moved down.

In some embodiments of the invention, the cushioning mechanism further comprises:

the support plate is fixed on the movable seat and is positioned above the cross rod; and

The upper portion is articulated mutually with the extension board, and the lower extreme can the butt in the upside of roof, and the right-hand member of horizontal pole can the butt in the left side lower part of extension board.

In some embodiments of the invention, the ejector rod is provided with a transmission rib which is matched with a key groove of the flywheel;

the cross section of the connecting part is polygonal, and the ejector rod is rotationally connected with the movable seat;

the flywheel detection platform also comprises a speed reduction assembly;

when the flywheel is accidentally separated from the rotating shaft and moves onto the ejector rod, the speed reducing assembly can act on the ejector rod to limit the rotation of the ejector rod.

In some embodiments of the present invention, a deceleration assembly includes:

a pressing block fixed at the lower end of the connecting rod; and

The arc friction plate is detachably connected to the lower side of the pressing block and used for limiting the rotation of the ejector rod.

In some embodiments of the invention, a laser detection device is mounted on the detection mount, the laser detection device being used to detect a ring gear located at the rim of the flywheel.

In some embodiments of the invention, the flywheel test stand further comprises:

the first baffle is fixed at the left part of the cross rod;

the second baffle is fixed on the left side of the movable seat and is spliced with the cross rod;

the pressure spring is sleeved on the cross rod and positioned between the first baffle and the second baffle; and

A supporting sleeve sleeved with the cross rod, a sliding groove is arranged on the inner side, a sliding block is fixedly arranged on the outer side,

wherein,,

the outer diameter of the supporting sleeve gradually increases from left to right;

the plurality of support sleeves are sleeved in sequence from left to right to form a conical structure as a whole; any two adjacent supporting sleeves are connected through a sliding block and a sliding groove; the leftmost end of the conical structure is fixedly connected with the first baffle, and the rightmost end of the conical structure is fixedly connected with the second baffle.

The embodiment of the invention has at least the following advantages or beneficial effects:

1. when the flywheel is accidentally separated from the rotating shaft and moves onto the ejector rod, the flywheel can move rightwards along the ejector rod under the action of inertia, the right-moving flywheel can push the cross rod to move rightwards, and under the action of the buffer mechanism, the flywheel can be buffered, so that the flywheel finally stops moving, and in the process, the gear ring of the flywheel cannot collide with other objects, and is not easy to damage.

2. When accidents happen, although the flywheel is separated from the rotating shaft, the flywheel is transferred to the ejector rod, the flywheel can be supported by the ejector rod, compared with the situation that the flywheel flies out of the rotating shaft directly and falls down randomly, the flywheel has smaller kinetic energy in right movement, the flywheel can stop moving more easily under the action of the buffer mechanism, the acting force between the cross rod and the flywheel is smaller, and the side face of the flywheel is not easy to damage.

3. When the rotation stability of the flywheel is detected, the flywheel is not required to be shielded, so that an operator can conveniently and intuitively observe the state of the flywheel.

4. The connecting portion of ejector rod can peg graft mutually with the right-hand member of pivot for the ejector rod can support the flywheel together with the pivot, that is to say, whether the flywheel is on the pivot or on the ejector rod, the flywheel can all obtain good support.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a flywheel test stand;

FIG. 2 is a schematic view of the structure of the ejector pin, the buffer mechanism and the deceleration assembly;

FIG. 3 is a right side view of FIG. 2;

FIG. 4 is an enlarged view of a portion of the position A of FIG. 3;

FIG. 5 is a schematic diagram of a laser detection device;

FIG. 6 is a schematic view of a cone structure;

fig. 7 is a partial enlarged view of the position B in fig. 3.

Icon:

1-a base, 11-a guide rail,

2-detecting seat, 21-laser detecting device,

3-a rotating shaft, 31-a connecting disc,

4-a movable seat, wherein the movable seat is provided with a plurality of movable seats,

5-ejector pins, 51-connecting parts, 52-transmission ribs,

61-a transverse moving cylinder,

7-a cross bar, 71-a buffer head,

8-buffer mechanism, 81-fixing plate, 82-connecting rod, 83-top plate, 84-buffer spring, 85-support plate, 86-driving plate, 87-press block, 88-friction plate, 881-connecting lug,

891-a first baffle plate, 892-a second baffle plate, 893-a pressure spring, 894-a supporting sleeve, 895-a sliding groove, 896-a sliding block and 897-a conical structure,

9-flywheel, 91-gear ring.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present invention.

In the description of embodiments of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "left," "right," "bottom," "axial," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of embodiments of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and are therefore not to be construed as limiting embodiments of the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

Referring to fig. 1-4, the present embodiment provides a flywheel 9 detection table, which mainly includes a base 1, a detection seat 2, a rotating shaft 3, a movable seat 4, a push rod 5, a traversing mechanism, a cross rod 7 and a buffer mechanism 8.

The detection seat 2 is fixed on the base 1, the rotating shaft 3 is rotationally connected to the detection seat 2, the rotating shaft 3 is fixedly provided with a connecting disc 31, the flywheel 9 is fixed on the rotating shaft 3 through the connecting disc 31, the movable seat 4 is movably arranged on the base 1, the ejector rod 5 is connected on the movable seat 4 and is coaxial with the rotating shaft 3, the left end of the ejector rod 5 is provided with a connecting part 51, the connecting part 51 is spliced with the right end of the rotating shaft 3, the diameter of the ejector rod 5 is smaller than or equal to the diameter of the rotating shaft 3, and after the flywheel 9 is accidentally separated from the rotating shaft 3, the flywheel 9 can be moved onto the ejector rod 5. The traversing mechanism is used for enabling the ejector rod 5 to be close to or far away from the rotating shaft 3, the cross rod 7 is inserted on the movable seat 4 and can transversely move, and the buffer mechanism 8 can play a role in buffering the transverse movement of the cross rod 7.

The left end of the rotating shaft 3 can be connected with a power source in a transmission way, after the flywheel 9 is fixed on the rotating shaft 3, the rotating shaft 3 can drive the flywheel 9 to rotate so as to conveniently detect the stability of the flywheel 9 when rotating, when the flywheel 9 accidentally breaks away from the rotating shaft 3 and moves to the ejector rod 5, the flywheel 9 can rotate under the action of inertia and move right along the ejector rod 5, the flywheel 9 moving right can push the cross rod 7 to move right, under the action of the buffer mechanism 8, the flywheel 9 can be buffered, the flywheel 9 can finally stop moving, and in the process, the gear ring 91 of the flywheel 9 cannot collide with other objects, so that the flywheel 9 is not easy to damage.

It will be appreciated that the cross bar 7 should be offset from the aperture in the flywheel 9 to ensure that the left end of the cross bar 7 is able to contact the right side of the flywheel 9.

It should be noted that, when an accident occurs, the flywheel 9 is also separated from the rotating shaft 3, but the flywheel 9 is transferred to the ejector rod 5, the flywheel 9 can be supported by the ejector rod 5, compared with the flywheel 9 which flies directly from the rotating shaft 3 and falls down randomly, the kinetic energy of the flywheel 9 moving rightwards is smaller, on the one hand, the flywheel 9 can be stopped moving more easily under the action of the buffer mechanism 8, on the other hand, the acting force between the cross rod 7 and the flywheel 9 is smaller, and the flywheel 9 is not easy to damage. Furthermore, since the connection portion 51 of the ejector pin 5 can be inserted into the right end of the rotating shaft 3, the ejector pin 5 can support the flywheel 9 together with the rotating shaft 3, that is, the flywheel 9 can be well supported regardless of whether the flywheel 9 is on the rotating shaft 3 or the ejector pin 5.

The main components and the principle of functioning of the flywheel 9 inspection station are generally described above, and the flywheel 9 inspection station will be described in more detail below.

Referring to fig. 2 and 3, the buffer mechanism 8 may mainly include a fixing plate 81, a connecting rod 82, a top plate 83, and a buffer spring 84. The fixed plate 81 is fixedly arranged on the movable seat 4, the connecting rod 82 is longitudinally inserted on the fixed plate 81, the top plate 83 is fixed at the upper end of the connecting rod 82, one end of the buffer spring 84 is connected with the top plate 83, and the other end is connected with the fixed plate 81. The cross bar 7 is in transmission connection with the top plate 83, when the cross bar 7 moves rightwards, the cross bar 7 can enable the top plate 83 to move downwards, so that the impact from the flywheel 9 received by the cross bar 7 is relieved through the buffer spring 84, and the flywheel 9 can finally stop moving. In this embodiment, in order to facilitate the downward movement of the top plate 83 by the cross bar 7 when the cross bar 7 moves rightward, the buffer mechanism 8 may further include a support plate 85 and a transmission plate 86, where the support plate 85 is fixed on the movable seat 4 and located above the cross bar 7, the upper portion of the transmission plate 86 is hinged to the support plate 85, the lower end of the transmission plate 86 can be abutted to the upper side of the top plate 83, and the right end of the cross bar 7 can be abutted to the lower left side of the transmission plate 86. The transmission plate 86 can convert the movement of the cross bar 7 to the right into the downward movement of the top plate 83, and when the top plate 83 moves downward, the buffer spring 84 is in a compressed state, so that the kinetic energy of the top plate 83 is converted into the elastic potential energy of the buffer spring 84 to play a role in buffering. Of course, in other embodiments, other ways of translating movement of the rail 7 to the right into movement of the top plate 83 to the bottom may be used, which is not shown.

It should be noted that, the connection mode of the ejector rod 5 and the movable seat 4 may be a fixed connection mode or a rotation connection mode, preferably, the ejector rod 5 and the movable seat 4 are rotationally connected in this embodiment, at this time, a transmission rib 52 capable of being matched with a key slot of the flywheel 9 may be disposed on the ejector rod 5, and when the transmission rib 52 is matched with the key slot of the flywheel 9, the flywheel 9 can drive the ejector rod 5 to rotate and simultaneously move along the axial direction of the ejector rod 5. In order to facilitate the cooperation between the transmission rib 52 and the key slot of the flywheel 9, the cross section of the connecting portion 51 is polygonal, for example, the cross section of the connecting portion 51 may be rectangular, so that the ejector rod 5 can be driven by the rotating shaft 3, and the transmission rib 52 can be smoothly matched with the key slot of the flywheel 9 in the process of moving the flywheel 9 onto the ejector rod 5.

Referring to fig. 2-4, the flywheel 9 detection platform may further include a speed reducing component, when the flywheel 9 accidentally breaks away from the rotating shaft 3, a power source in driving connection with the rotating shaft 3 may be turned off, and when the flywheel 9 moves onto the ejector rod 5, the rotating flywheel 9 may drive the ejector rod 5 to continue rotating, and at this time, the speed reducing component acts on the ejector rod 5, so as to limit the rotation of the ejector rod 5, so that the ejector rod 5 and the flywheel 9 located on the ejector rod 5 stop rotating rapidly. Specifically, the speed reducing assembly may mainly include a pressing block 87 and a friction plate 88, where the pressing block 87 is fixed at the lower end of the connecting rod 82, the friction plate 88 is arc-shaped, and the friction plate 88 is detachably connected to the lower side of the pressing block 87 to be used for limiting the rotation of the ejector rod 5. When the cross rod 7 moves rightwards under the action of the flywheel 9, the cross rod 7 not only can play a role in buffering the movement of the flywheel 9 through the buffer spring 84, but also can enable the friction plate 88 to be in contact with the ejector rod 5 through the transmission plate 86 and the connecting rod 82 so as to limit the rotation of the ejector rod 5 through the friction plate 88, thereby achieving the purpose of enabling the flywheel 9 on the ejector rod 5 to stop rotating and moving rapidly. In addition, because of the contact between the cross bar 7 and the rotating flywheel 9, under the condition that the left end of the cross bar 7 is not very smooth, a certain friction force exists between the cross bar 7 and the rotating flywheel 9, so that the cross bar 7 can slow down the rotation speed of the flywheel 9.

In the present embodiment, the friction plate 88 is preferably detachably attached to the pressing block 87 as follows: the friction plate 88 has a connecting lug 881, and the connecting lug 881 is connected with the pressing block 87 by a screw.

It will be appreciated that the function of the speed reducing assembly is to limit the rotation of the ejector 5 after the flywheel 9 is accidentally disengaged from the shaft 3 and moved onto the ejector 5, and many specific embodiments of the speed reducing assembly are possible, which are not shown in the present embodiment.

In order to facilitate the ejector rod 5 to be close to or far away from the rotating shaft 3, the traversing mechanism mainly comprises a traversing air cylinder 61, a guide rail 11 is arranged on the base 1, the bottom of the movable seat 4 is in sliding connection with the guide rail 11, the traversing air cylinder 61 moves the movable seat 4 leftwards or rightwards so as to realize the movement of the ejector rod 5, and when the ejector rod 5 moves rightwards, the distance between the ejector rod 5 and the rotating shaft 3 is increased, so that the flywheel 9 is conveniently fixed on the rotating shaft 3; when the ejector rod 5 moves leftwards and contacts with the rotating shaft 3, the flywheel 9 can be smoothly transferred to the ejector rod 5 conveniently when accidents occur.

The left end of the cross rod 7 can be further fixed with a buffer head 71, and the buffer head 71 not only can slow down the impact force of the flywheel 9 on the cross rod 7 when moving rightwards, but also can increase the friction resistance of the flywheel 9 in the rotating process.

It should be noted that, the number of the cross bars 7 is not limited in this embodiment, and the number of the cross bars 7 may be one or more, and when there are a plurality of cross bars 7, the material requirement for a single cross bar 7 is low.

Example 2

This example is a further improvement over example 1.

Referring to fig. 5, in the present embodiment, a laser detection device 21 may be mounted on the detection base 2, and the laser detection device 21 is used to detect a ring gear 91 located at the rim of the flywheel 9.

When the laser detection device is used, the rotating speed of the rotating shaft 3 can be reduced, the flywheel 9 is driven to rotate slowly through the rotating shaft 3, the laser detection device 21 can shoot laser on the gear ring 91 to detect the gear ring 91, and the laser detection device 21 can transmit detected data to a server so as to analyze the data through the server.

By the arrangement of the laser detection device 21, the flywheel 9 detection table not only can detect the stability of the flywheel 9 during rotation, but also can detect the gear ring 91 of the flywheel 9 after the rotation speed of the rotating shaft 3 is reduced, and the gear ring 91 of the flywheel 9 is not required to be detected after the flywheel 9 is transferred to other detection equipment.

Example 3

This example is a further improvement over example 1.

Referring to fig. 6 and 7, in the present embodiment, the flywheel 9 inspection station may further include a first baffle 891, a second baffle 892, a compression spring 893, and a support sleeve 894. The left part at horizontal pole 7 is fixed to first baffle 891, the left side at movable seat 4 is fixed to second baffle 892 and peg graft mutually with horizontal pole 7, the pressure spring 893 cover is established on horizontal pole 7, pressure spring 893 is located between first baffle 891 and the second baffle 892, support cover 894 cup joints mutually with horizontal pole 7, support cover 894 can play the supporting role to horizontal pole 7, spout 895 has been seted up to the inboard of support cover 894, the slider 896 has been set firmly in the outside, wherein, the external diameter of support cover 894 increases gradually from left to right, a plurality of support covers 894 cup joint the back in proper order from left to right, form whole conical structure 897 that is the toper, be connected through slider 896 and spout 895 between any two adjacent support covers 894, this conical structure 897's leftmost end and first baffle 891 fixed connection, this conical structure 897's rightmost end and second baffle 892 fixed connection.

The tapered structure 897, collectively defined by the plurality of support sleeves 894, may extend or retract along the axial direction of the crossbar 7. After the cross rod 7 contacts with the rotating flywheel 9, the cross rod 7 is easy to bend, and the cross rod 7 can be supported in an auxiliary mode through the arrangement of the supporting sleeve 894, so that the deformation resistance of the cross rod 7 is improved, and the requirement on the material of the cross rod 7 is reduced. Further, the impact of the flywheel 9 can be better buffered.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art, and the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without collision. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flywheel test stand, comprising:

a base;

the detection seat is fixed on the base;

the movable seat is movably arranged on the base;

the ejector rod is connected to the movable seat, the ejector rod is coaxial with the rotating shaft, one end of the ejector rod, which faces the rotating shaft, is provided with a connecting part, and the connecting part is spliced with one end of the rotating shaft; when the flywheel is accidentally separated from the rotating shaft, the flywheel can move to the ejector rod;

the cross rod is inserted on the movable seat and can move transversely; and

And the buffer mechanism can play a role in buffering the transverse movement of the cross rod.

2. The flywheel detection stand of claim 1, wherein the diameter of the top rod is equal to the diameter of the spindle.

3. The flywheel sensing station of claim 1, wherein the traversing mechanism comprises a traversing cylinder.

4. The flywheel test stand of claim 1, wherein a buffer head is secured to an end of the cross bar facing the test seat.

5. The flywheel sensing station of claim 1, wherein the buffer mechanism comprises:

the fixed plate is fixedly arranged on the movable seat;

the connecting rod is longitudinally spliced on the fixed plate;

the top plate is fixed at the upper end of the connecting rod; and

the cross rod is in transmission connection with the top plate, and when the cross rod moves right, the top plate moves downwards.

6. The flywheel sensing station of claim 5, wherein the buffer mechanism further comprises:

The upper part of the transmission plate is hinged with the support plate, the lower end of the transmission plate can be abutted to the upper side of the top plate, and the right end of the cross rod can be abutted to the lower left side of the transmission plate.

7. The flywheel test stand of claim 5, wherein the flywheel comprises a base,

the ejector rod is provided with a transmission rib which is matched with a key slot of the flywheel;

the flywheel detection platform further comprises a speed reduction assembly;

8. The flywheel sensing station of claim 7, wherein the deceleration assembly comprises:

a pressing block fixed at the lower end of the connecting rod; and

9. A flywheel detection stand according to any of claims 1 to 8, wherein the detection seat is provided with laser detection means for detecting a ring gear at the rim of the flywheel.

10. The flywheel detection stand of any of claims 1-8, further comprising:

the first baffle is fixed at the left part of the cross rod;

A supporting sleeve sleeved with the cross rod, a sliding groove arranged on the inner side, a sliding block fixedly arranged on the outer side,

wherein,,

the supporting sleeves are sequentially sleeved from left to right, and then a conical structure is integrally formed; any two adjacent supporting sleeves are connected with the sliding chute through the sliding blocks; the leftmost end of the conical structure is fixedly connected with the first baffle, and the rightmost end of the conical structure is fixedly connected with the second baffle.