CN213583118U

CN213583118U - Article hard disk storage device of safe transportation

Info

Publication number: CN213583118U
Application number: CN202022740943.1U
Authority: CN
Inventors: 李凯阳; 李晓瑞; 潘一萍; 田超超
Original assignee: Hebei Jiuju Technology Co ltd
Current assignee: Hebei Jiuju Technology Co ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-06-29
Anticipated expiration: 2030-11-24

Abstract

The utility model provides an article hard disk storage device for safe transportation, which comprises a bearing box, wherein the front end of the bearing box is provided with a bearing cavity, the inner surfaces of the two sides of the bearing cavity are respectively provided with a slide way, one side of the outer surface of the front end of the bearing box is provided with a first round hole corresponding to the position of the bearing cavity, an opening and closing mechanism penetrates through the first round hole, the front end of the opening and closing mechanism is movably provided with a movable button, the movable button is fixedly provided with a first clapboard, the rear end of the first clapboard is movably provided with a second spring, the rear end of the movable button is fixedly provided with a movable block, one side of the inner part of the bearing cavity is provided with a groove close to the front end, the central position of the inner part of the groove is fixedly provided with a second clapboard, the inner part of the groove is movably provided with a baffle mechanism, when a user wants to use the hard disk, the device is convenient to, avoid causing the damage in the transportation.

Description

Article hard disk storage device of safe transportation

Technical Field

The utility model belongs to the technical field of the hard disk storage technique and specifically relates to an article hard disk storage device of safe transportation is related to.

Background

Hard disks are abbreviated. Magnetic disk using hard magnesium-aluminum alloy as substrate material. The hard disk is the main storage device of the computer and is composed of magnetic head, disk, motor, main control chip and other parts. The read-write mode adopts semi-random access, and can read the data in the hard disk in any sequence, but the data reading speeds at different positions are different.

In the implementation of the utility model discloses the in-process, it does not solve to have following problem among the prior art at least to discover: 1, when a hard disk is required to be used, the hard disk can be determined only by taking the hard disk for multiple times when a certain hard disk position is not known, and the access process of the hard disk is complicated and inconvenient to access; 2. in the transportation process, under the influence of the external environment, the hard disk is inevitably damaged due to impact.

Therefore, the hard disk storage device for the objects which are safely transported is provided.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide a article hard disk storage device of safe transportation, the device when the user wants to use the hard disk, the access hard disk of being convenient for also can protect the hard disk when the storage hard disk simultaneously, avoids causing the damage in the transportation to solve the problem that proposes in the above-mentioned background art.

The utility model provides an article hard disk storage device for safe transportation, which comprises a bearing box, wherein the front end of the bearing box is provided with a bearing cavity, the upper and lower ends in the bearing cavity are provided with clamping grooves near the front end, the inner surfaces of the two sides of the bearing cavity are provided with slideways, one side of the front outer surface of the bearing box is provided with a first round hole corresponding to the position of the bearing cavity, an opening and closing mechanism penetrates through the first round hole, the front end of the opening and closing mechanism is movably provided with a movable button, the middle of the outer circular surface of the movable button is fixedly provided with a first clapboard, the rear end of the first clapboard is movably provided with a second spring, the second spring is wrapped on the outer circular surface of the movable button, the rear end of the movable button is fixedly provided with a movable block, one side in the bearing cavity is provided with a groove near the front end, the inner central position of the groove is fixedly provided with a second clapboard, the second partition plate is located at the front end of the moving block, the rear end of the second spring is movably connected to the outer surface of the front end of the second partition plate, and baffle plate mechanisms are movably mounted inside the clamping groove and the groove.

By adopting the technical scheme, in a normal state, the movable button in the opening and closing mechanism protrudes out of the first round hole, and in a closed state of the whole bearing box, the opening and closing mechanism is firstly pressed to start the opening and closing mechanism, the first clapboard moves towards the rear end along with the movable button through the movement of the movable button towards the first round hole, the movable block is pushed to move backwards by the movable button, so that the opening and closing mechanism moves towards the inner part of the groove to open the bearing cavity, then the hard board is pushed into the bearing cavity through the slideway, the second spring is pushed through the first clapboard, so that the second spring is extruded on the second clapboard, when the movable button is not pressed by force, the opening and closing mechanism automatically rebounds to the original position, the bearing cavity is closed at the moment, the hard board is stored in the bearing cavity, due to the action of the first partition plate and the second partition plate, the opening and closing mechanism cannot be completely moved into the groove and cannot be ejected out of the groove when not stressed.

Preferably, a second round hole is formed in the middle of the second partition plate, the size of the second round hole is consistent with that of the first round hole, the opening and closing mechanism penetrates through the first round hole and the second round hole, and the opening and closing mechanism is located in the groove.

Through adopting above-mentioned technical scheme, remove to first round hole through the activity button for first baffle is along with the activity button removes to the rear end, promotes the movable block through first baffle and removes backward, makes the mechanism that opens and shuts open and open the bearing chamber to the inside removal of recess, runs through the mechanism that opens and shuts in the second baffle through first round hole and two round holes in ground, makes the mechanism that opens and shuts can be firm arrange in the recess.

Preferably, a sliding block is movably mounted on one side of the baffle mechanism, a baffle is movably mounted at the position where the other side of the baffle mechanism is connected with the sliding block, and a third spring is movably mounted between the sliding block and the baffle.

Through adopting above-mentioned technical scheme, under bearing the closed state of chamber, baffle mechanism is in the closure, and through pressing the mechanism that opens and shuts inwards promote the movable block extrusion slider for the slider moves to both ends from top to bottom, drives the baffle through the slider and moves to both ends from top to bottom, makes the baffle move into the draw-in groove, and baffle mechanism opens this moment, through third spring pulling slider, makes the slider fix in the recess, has fixed baffle mechanism simultaneously and in bearing the chamber.

Preferably, both sides of the inner surface of the rear end of the bearing cavity are fixedly provided with first springs, the front ends of the first springs are fixedly provided with sliding plates, and the outer surface of the front end of each sliding plate is consistent with the inner surface of the rear end of the bearing cavity.

Through adopting above-mentioned technical scheme, push into through the hard disk and bear the weight of the chamber, make the slide remove to the rear end, extrude first spring through the slide, make first spring have a forward power to promote the slide, press the mechanism that opens and shuts this moment, make baffle mechanism closed, under the common clamping action through slide and baffle, make the hard disk can fix in bearing the weight of the chamber and bear the weight of the chamber, extrude the slide through first spring simultaneously, make the hard disk have the effect of buffering in bearing the weight of the chamber, prevent that the hard disk from causing the damage because of the collision in the transportation.

Preferably, the moving block is composed of a rectangle and a triangle, the upper end and the lower end of the moving block are both provided with an inclined plane, the sliding block is a table body, and the inclined plane of the sliding block corresponds to the inclined plane of the moving block up and down.

Through adopting above-mentioned technical scheme, promote the movable block through the movable button for the movable block moves backward, inwards promote the movable block extrusion slider through pressing the mechanism that opens and shuts, two inclined planes are corresponding, make the slider move to both ends from top to bottom, drive the baffle through the slider and move to both ends from top to bottom, make the baffle move into in the draw-in groove.

Preferably, eight apex angles of bearing the box are equipped with the rubber layer, the front and back end surface of baffle all is equipped with the rubber layer, and the front end surface of slide is equipped with the rubber layer.

Through adopting above-mentioned technical scheme, the rubber layer plays the effect of protection and buffering, in the transportation hard disk process, it can inevitably receive the collision to bear the box, through bearing the rubber layer on the eight apex angles of box this moment, make whole box body can be with arranging the plane in steadily, under the common clamping action through slide and baffle, make the hard disk fixed in bearing the weight of the intracavity, utilize the rubber layer of the front end surface of outer surface and slide around the baffle to protect the hard disk simultaneously, prevent that the hard disk from causing the loss because of the striking in bearing the weight of the chamber.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the first partition board moves towards the rear end along with the movable button by moving the movable button in the first round hole, the movable block is pushed to move backwards by the movable button, the opening and closing mechanism moves towards the inside of the groove, the movable block is pushed inwards to extrude the sliding block by pressing the opening and closing mechanism, the sliding block moves towards the upper end and the lower end, the baffle is driven by the sliding block to move towards the upper end and the lower end, the baffle is moved into the clamping groove, the baffle mechanism is opened, when the bearing cavity is opened, the hard plate is pushed into the bearing cavity by the slideway, the sliding plate is pushed into the bearing cavity by the hard disk to move towards the rear end, the first spring is extruded by the sliding plate, the sliding plate is pushed by the first spring with a forward force, the second spring is pushed by the first partition board, the second spring is extruded on the second partition board, and when the movable button is not pressed by force, the opening and, at the moment, the bearing cavity is closed, under the common clamping action of the sliding plate and the baffle, the hard disk can be fixed in the bearing cavity, when the hard disk is to be taken out, the sliding block is extruded by pushing the moving block inwards by pressing the opening and closing mechanism, the two inclined planes are corresponding, the sliding block is moved towards the upper end and the lower end, the baffle is driven by the sliding block to move towards the upper end and the lower end, the baffle is moved into the clamping groove, the baffle mechanism is opened, the first spring is extruded by the sliding plate, the sliding plate is pushed by a forward force of the first spring, the hard disk is pushed to move forwards by the sliding plate, the hard disk is.

2. Meanwhile, the sliding plate is extruded through the first spring, the hard disk has a buffering effect in the bearing cavity, the hard disk is prevented from being damaged due to collision in the transportation process, the baffle mechanism is opened, the first spring is extruded through the sliding plate, the first spring has a forward force to push the sliding plate, the hard disk is pushed to move forwards through the sliding plate, the hard disk is automatically ejected out, the rubber layer plays a role in protection and buffering, in the hard disk transportation process, the bearing box can not avoid collision, the whole box body can be stably placed on a plane through the rubber layer on the eight vertex angles of the bearing box at the moment, the hard disk is fixed in the bearing cavity under the common clamping effect of the sliding plate and the baffle, the hard disk is protected by the rubber layer on the front end outer surface of the sliding plate and the front end outer surface of the baffle, and the hard disk is prevented from being lost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a structural view of the present invention;

FIG. 2 is a combination view of the groove and the second partition plate of the present invention;

FIG. 3 is a structural view of the opening and closing mechanism of the present invention;

fig. 4 is a structural view of the baffle mechanism of the present invention;

FIG. 5 is a structural view of the middle bearing chamber of the present invention

Description of reference numerals:

1. a carrying box; 2. an opening and closing mechanism; 21. a movable button; 22. a first separator; 23. a second spring; 24. a second separator; 241. a second circular hole; 25. a moving block; 3. a baffle mechanism; 31. a slider; 32. a baffle plate; 33. a third spring; 4. a load bearing cavity; 5. a card slot; 6. a slideway; 7. a first spring; 8. a slide plate; 9. a first circular hole; 10. and (4) a groove.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 5, the present invention provides a technical solution:

a storage device for an article hard disk for safe transportation comprises a bearing box 1, wherein a bearing cavity 4 is arranged at the front end of the bearing box 1, clamping grooves 5 are respectively arranged at the upper end and the lower end of the interior of the bearing cavity 4, which are close to the front end, slide ways 6 are respectively arranged on the inner surfaces of the two sides of the bearing cavity 4, a first round hole 9 is arranged at one side of the outer surface of the front end of the bearing box 1, which corresponds to the bearing cavity 4, an opening and closing mechanism 2 penetrates through the first round hole 9, a movable button 21 is movably arranged at the front end of the opening and closing mechanism 2, a first partition plate 22 is fixedly arranged in the middle of the outer circular surface of the movable button 21, a second spring 23 is movably arranged at the rear end of the first partition plate 22, the second spring 23 is wrapped on the outer circular surface of the movable button 21, a movable block 25 is fixedly arranged at the rear end of the movable button 21, a groove 10, a second partition plate 24 is fixedly installed in the center of the inside of the groove 10, the second partition plate 24 is located at the front end of the moving block 25, the rear end of the second spring 23 is movably connected to the outer surface of the front end of the second partition plate 24, and the baffle mechanism 3 is movably installed in the clamping groove 5 and the inside of the groove 10.

By adopting the technical scheme, in a normal state, the movable button 21 in the opening and closing mechanism 2 protrudes out of the first round hole 9, and in a closed state of the whole bearing box 1, firstly, the opening and closing mechanism 2 is pressed to start the opening and closing mechanism 2, the movable button 21 is moved into the first round hole 9 by pressing the movable button 21, so that the first partition plate 22 moves towards the rear end along with the movable button 21, the movable block 25 is pushed to move backwards by the movable button 21, the opening and closing mechanism 2 moves towards the inside of the groove 10, the baffle mechanism 3 is opened by the movable block 25, the bearing cavity 4 is opened, then, the hard plate is pushed into the bearing cavity 4 by the slideway 6, the second spring 23 is pushed by the first partition plate 22, so that the second spring 23 is extruded on the second partition plate 24, when the movable button 21 is not pressed under stress, the opening and closing mechanism 2 automatically rebounds to a position, at the moment, the bearing cavity 4 is closed, and the hard plate is stored in, due to the action of the first and second partitions 22, 24, the opening and closing mechanism 2 is neither completely moved into the recess 10 nor ejected out of the recess 10 when not subjected to a force.

Specifically, a second circular hole 241 is formed in the middle of the second partition plate 24, the size of the second circular hole 241 is consistent with that of the first circular hole 9, the opening and closing mechanism 2 penetrates through the first circular hole 9 and the second circular hole 241, and the opening and closing mechanism 2 is located in the groove 10.

Through adopting above-mentioned technical scheme, remove to first round hole 9 through activity button 21 for first baffle 22 moves to the rear end along with activity button 21, promotes the movable block 25 through first baffle 22 and moves backward, makes mechanism 2 that opens and shuts open and bear chamber 4 to the inside removal of recess 10, will open and shut mechanism 2 through first round hole 9 and second round hole 241 and run through in second baffle 24, makes mechanism 2 that opens and shuts can be firm arrange in recess 10.

Specifically, a sliding block 31 is movably mounted on one side of the baffle mechanism 3, a baffle 32 is movably mounted at a position where the other side of the baffle mechanism 3 is connected with the sliding block 31, and a third spring 33 is movably mounted between the sliding block 31 and the groove 10.

Through adopting above-mentioned technical scheme, under bearing chamber 4 closed state, baffle mechanism 3 is in the closure, through pressing open and shut mechanism 2 and inwards promote movable block 25 extrusion slider 31 for slider 31 both ends move from top to bottom, drive baffle 32 through slider 31 and move from top to bottom both ends, make baffle 32 immigration draw-in groove 5, baffle mechanism 3 opens this moment, through third spring 33 pulling slider 31, make slider 31 fix in recess 10, fixed baffle mechanism 3 simultaneously in bearing chamber 4.

Specifically, the moving block 25 is composed of a rectangle and a triangle, the upper end and the lower end of the moving block 25 are both provided with an inclined surface, the sliding block 31 is a table body, and the inclined surface of the sliding block 31 corresponds to the inclined surface of the moving block 25 up and down.

By adopting the technical scheme, the moving block 25 is pushed by the movable button 21, so that the moving block 25 moves backwards, the sliding block 31 is extruded by pushing the moving block 25 inwards by pressing the opening and closing mechanism 2, the two inclined planes correspond to each other, the sliding block 31 moves towards the upper end and the lower end, and the sliding block 31 drives the baffle 32 to move towards the upper end and the lower end, so that the baffle 32 moves into the clamping groove 5.

Specifically, eight apex angles of the bearing box 1 are provided with rubber layers, the outer surfaces of the front end and the rear end of the baffle 32 are provided with rubber layers, and the outer surface of the front end of the sliding plate 8 is provided with a rubber layer.

Through adopting above-mentioned technical scheme, the rubber layer plays the effect of protection and buffering, in the transportation hard disk process, it can not avoid receiving the collision to bear box 1, through the rubber layer on the eight apex angles that bear box 1 this moment, make whole box body can be with arranging the plane in steadily, under the common clamping action through slide 8 and baffle 32, make the hard disk at bearing chamber 4 internal fixation, utilize the baffle 32 around the surface and the front end surface's of slide 8 rubber layer to protect the hard disk simultaneously, prevent that the hard disk from leading to the fact the loss because of the striking in bearing chamber 4.

Specifically, the inner surface of the rear end of the bearing cavity 4 is fixedly provided with a first spring 7 on both sides, the front end of the first spring 7 is fixedly provided with a sliding plate 8, and the outer surface of the front end of the sliding plate 8 is consistent with the inner surface of the rear end of the bearing cavity 4.

Through adopting above-mentioned technical scheme, push into through the hard disk and bear chamber 4, make slide 8 remove to the rear end, extrude first spring 7 through slide 8, make first spring 7 have a forward power to promote slide 8, press opening and shutting mechanism 2 this moment, make baffle mechanism 3 closed, under the common clamping action through slide 8 and baffle 32, make the hard disk can fix in bearing chamber 4 and bear chamber 4, extrude slide 8 through first spring 7 simultaneously, make the hard disk have the effect of buffering in bearing chamber 4, prevent that the hard disk from leading to the fact the damage because of the collision in the transportation.

The using method comprises the following steps: under the normal state, the movable button 21 in the opening and closing mechanism 2 protrudes out of the first circular hole 9, when the whole bearing box 1 is in a closed state, firstly, the opening and closing mechanism 2 is pressed to start the opening and closing mechanism 2, the movable button 21 moves into the first circular hole 9, the first partition plate 22 moves towards the rear end along with the movable button 21, the movable block 25 is pushed by the movable button 21 to move backwards, the opening and closing mechanism 2 moves towards the inside of the groove 10, the movable block 25 is pushed inwards to extrude the sliding block 31 by pressing the opening and closing mechanism 2, the sliding block 31 moves towards the upper end and the lower end, the baffle plate 32 is driven by the sliding block 31 to move towards the upper end and the lower end, the baffle plate 32 moves into the clamping groove 5, at the moment, the baffle plate mechanism 3 is opened, when the bearing cavity 4 is opened, then the hard plate is pushed into the bearing cavity 4 by the slideway 6, the hard plate is pushed into the bearing cavity 4 by the hard, the first spring 7 pushes the sliding plate 8 forward, the second spring 23 is pushed by the first partition plate 22, the second spring 23 is extruded on the second partition plate 24, when the movable button 21 is pressed without stress, the opening and closing mechanism 2 automatically rebounds to the original position, the bearing cavity 4 is closed at the moment, the hard disk can be fixed in the bearing cavity 4 under the common clamping action of the sliding plate 8 and the baffle plate 32, the sliding plate 8 is extruded by the first spring 7, the hard disk has the buffering effect in the bearing cavity 4, the damage caused by collision during transportation is prevented, the movable block 25 is pushed by the movable button 21, the movable block 25 moves backwards, the movable block 25 is pushed inwards by pressing the opening and closing mechanism 2 to extrude the sliding block 31, the two inclined planes correspond to each other, the sliding block 31 moves towards the upper end and the lower end, the baffle plate 32 is driven by the sliding block 31 to move towards the upper end and the lower end, make baffle 32 move into in the draw-in groove 5, baffle mechanism 3 opens, extrude first spring 7 through slide 8, make first spring 7 have a forward power to promote slide 8, promote the hard disk and move forward through slide 8, make hard disk auto-eject, the rubber layer plays the effect of protection and buffering, in the transportation hard disk process, it can not avoid receiving the collision to bear box 1, through the rubber layer on eight apex angles that bears box 1 this moment, make whole box body can be with stably arranging the plane in, under the common clamping action through slide 8 and baffle 32, make the hard disk at bearing chamber 4 internal fixation, utilize the rubber layer of outer surface and the front end surface of slide 8 to protect the hard disk around baffle 32 simultaneously, prevent that the hard disk from leading to the fact the loss because of the striking in bearing chamber 4.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The article hard disk storage device for safe transportation comprises a bearing box (1), and is characterized in that a bearing cavity (4) is formed in the front end of the bearing box (1), clamping grooves (5) are formed in the positions, close to the front end, of the upper end and the lower end of the interior of the bearing cavity (4), slideways (6) are formed in the inner surfaces of the two sides of the bearing cavity (4), a first round hole (9) is formed in one side of the outer surface of the front end of the bearing box (1) and corresponds to the position of the bearing cavity (4), an opening and closing mechanism (2) penetrates through the first round hole (9), a movable button (21) is movably mounted at the front end of the opening and closing mechanism (2), a first partition plate (22) is fixedly mounted in the middle of the outer circular surface of the movable button (21), a second spring (23) is movably mounted at the rear end of the first partition plate (22), and the second spring (23) is wrapped on the outer circular surface of, the rear end of the movable button (21) is fixedly provided with a movable block (25), a groove (10) is formed in a position, close to the front end, of one side of the interior of the bearing cavity (4), a second partition plate (24) is fixedly arranged at the central position of the interior of the groove (10), the second partition plate (24) is located at the front end of the movable block (25), the rear end of the second spring (23) is movably connected to the outer surface of the front end of the second partition plate (24), and the clamping groove (5) and the groove (10) are movably provided with a baffle mechanism (3).

2. The hard disk storage device for the objects transported safely as claimed in claim 1, wherein the second partition (24) has a second circular hole (241) in the middle, the size of the second circular hole (241) is the same as that of the first circular hole (9), the opening and closing mechanism (2) penetrates through the first circular hole (9) and the second circular hole (241), and the opening and closing mechanism (2) is located in the groove (10).

3. The hard disk storage device for the objects transported safely as claimed in claim 1, wherein a slide block (31) is movably installed on one side of the baffle mechanism (3), a baffle (32) is movably installed on the other side of the baffle mechanism (3) at the position connected with the slide block (31), and a third spring (33) is movably installed between the slide block (31) and the groove (10).

4. The hard disk storage device for the objects transported safely as claimed in claim 3, wherein the moving block (25) is composed of a rectangle and a triangle, and the upper and lower ends of the moving block (25) are provided with an inclined surface, the sliding block (31) is a platform, and the inclined surface of the sliding block (31) is corresponding to the inclined surface of the moving block (25) up and down.

5. A storage device for articles of safe transportation according to claim 3, characterized in that eight corners of the carrying case (1) are provided with rubber layers, and the outer surfaces of the front and rear ends of the baffle (32) are provided with rubber layers.

6. A hard disk storage device for articles to be transported safely as claimed in claim 1, wherein the inner surface of the rear end of the bearing chamber (4) is fixedly provided with a first spring (7) on both sides, the front end of the first spring (7) is fixedly provided with a sliding plate (8), and the size of the outer surface of the front end of the sliding plate (8) is consistent with the inner surface of the rear end of the bearing chamber (4).