CN215592919U

CN215592919U - Calendering device

Info

Publication number: CN215592919U
Application number: CN202120891377.6U
Authority: CN
Inventors: 唐厚德; 江军
Original assignee: Anhui Tongxian New Materials Co ltd
Current assignee: Anhui Tongxian New Materials Co ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2022-01-21
Anticipated expiration: 2031-04-27

Abstract

The present invention relates to a rolling device, comprising: the fixing assembly comprises a lower shaft seat and an upper shaft seat, the upper shaft seat is arranged above the lower shaft seat, and the lower shaft seat is fixedly connected with an external support structure; the lifting assembly is fixedly connected with an external supporting structure, and the moving end of the lifting assembly is fixedly connected with the top of the upper shaft base; the first compression roller assembly is connected with the lower shaft seat; the second compression roller assembly is arranged above the first compression roller assembly and fixedly connected with the upper shaft base, the upper portion of the second compression roller assembly is fixedly connected with the moving end of the lifting assembly, and the second compression roller assembly moves under the driving of the lifting assembly and moves longitudinally relative to the first compression roller assembly. The utility model can better adjust the distance between the first compression roller assembly and the second compression roller assembly so as to realize the molding of different product structures in the same kiln and realize the production of various products by one kiln.

Description

Calendering device

Technical Field

The utility model relates to the technical field of photovoltaic solar panel manufacturing, in particular to a calendering device.

Background

Solar photovoltaic systems, also called Photovoltaics, referred to simply as Photovoltaics ("Photovoltaics") refer to devices that convert solar energy into direct current electrical energy using the photovoltaic effect of photovoltaic semiconductor materials. The core of a photovoltaic installation is a solar panel. The semiconductor materials used for power generation are mainly: monocrystalline silicon, polycrystalline silicon, amorphous silicon, cadmium telluride, and the like. Since the application of renewable energy is actively promoted in various countries in recent years, the development of the photovoltaic industry is very rapid.

In the photovoltaic solar industry, plate glass is commonly used, but in the existing ultra-thin plate forming process, a calender (calender) is usually used for manufacturing, and the calender (calender) is formed by arranging two or more rollers according to a certain form and can be divided into cold pressing and hot pressing. In the process, only one type of product can be produced in one kiln, and the limitation is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a calendering device to solve the problem that one kiln can only produce one type of product.

The utility model solves the technical problems through the following technical means:

a calendering apparatus, comprising:

the fixing assembly comprises a lower shaft seat and an upper shaft seat, the upper shaft seat is arranged above the lower shaft seat, and the lower shaft seat is fixedly connected with an external support structure;

the lifting assembly is fixedly connected with an external supporting structure, and the moving end of the lifting assembly is fixedly connected with the top of the upper shaft base;

the first compression roller assembly is connected with the lower shaft seat;

the second compression roller assembly is arranged above the first compression roller assembly and fixedly connected with the upper shaft base, the upper portion of the second compression roller assembly is fixedly connected with the moving end of the lifting assembly, and the second compression roller assembly moves under the driving of the lifting assembly and moves longitudinally relative to the first compression roller assembly.

The lower shaft seat is used for supporting the first compression roller assembly, the lifting assembly can drive the upper shaft seat to move up and down, the fixing assembly is fixedly connected with the second compression roller assembly to fixedly support the second compression roller assembly, so that the distance between the first compression roller assembly and the second compression roller assembly is better adjusted, and the first compression roller assembly and the second compression roller assembly rotate mutually to roll glass liquid.

As a further scheme of the utility model: the first compression roller assembly is connected with an external first driving mechanism and rotates under the driving of the first driving mechanism, and the second compression roller assembly is further connected with an external second driving mechanism and rotates under the driving of the second driving mechanism.

As a further scheme of the utility model: the lifting assembly comprises a lifting rod, a lifting rod support and a driving piece, the end part of the lifting rod is connected with the upper shaft base, the end part, far away from the upper shaft base, of the lifting rod is connected with the moving end of the driving piece, the lifting rod support is used for being fixedly arranged on the surface of an external supporting structure, and the lifting rod support is fixedly connected with the driving piece to support the driving piece.

As a further scheme of the utility model: the first compression roller assembly comprises a first pipeline, a first gear, a first outer pipeline and a first compression roller, the first pipeline comprises a first horizontal part and a first longitudinal part, a first outer pipeline is arranged outside the first horizontal part, the end, close to the first longitudinal part, of the first outer pipeline is provided with the first gear, the first gear is connected with an external first driving mechanism and rotates under the driving of the first driving mechanism, the first outer pipeline penetrates through the lower shaft seat and is connected with the first outer pipeline in a rotating mode, the first compression roller is fixedly arranged outside the first outer pipeline, and the upper end of the first longitudinal part extends to the ground or is fixed with an external supporting mechanism.

As a further scheme of the utility model: the second compression roller assembly comprises a second pipeline, a second gear, a second outer pipeline, a connecting plate and a second compression roller, the second pipeline comprises a second horizontal part and a second longitudinal part, the second outer pipeline is sleeved outside the second horizontal part, one end of the second outer pipeline close to the second longitudinal part is fixedly connected with the second gear, the second gear is connected with an external second driving mechanism, the second outer pipeline penetrates through the upper shaft seat and is connected with the upper shaft seat in a rotating mode, the second outer pipeline is fixedly provided with the second compression roller which is connected integrally, and one end of the second compression roller is attached to the side face of the upper shaft seat, which deviates from the second longitudinal part.

As a further scheme of the utility model: the second longitudinal portion is provided with a connecting rod, and the connecting rod is connected with the suspender.

As a further scheme of the utility model: the first driving mechanism and the second driving mechanism are opposite in rotation direction.

The first driving mechanism and the second driving mechanism are opposite in rotation direction, so that the first compression roller and the second compression roller are opposite in rotation direction, and rolling is facilitated.

As a further scheme of the utility model: the external support structure is a support assembly, the support assembly is fixed on the wall, and the upper portion of the support assembly is fixedly connected with the lifting assembly to support the lifting assembly.

As a further scheme of the utility model: the support component is characterized by further comprising a vertical plate, the upper end of the vertical plate is fixedly connected with the top portion of the support component, the lower end of the vertical plate is in contact with the lower portion of the support component, and the vertical plate is further fixedly connected with the fixing component.

As a further scheme of the utility model: the support assembly comprises a cross beam, an anti-thrust fixing plate, an anti-thrust screw and a screw fixing seat, the cross beam is fixedly connected with the wall, the anti-thrust fixing plate is symmetrically arranged on two sides of the cross beam, the anti-thrust screw is arranged at the lower end of the anti-thrust fixing plate, the anti-thrust screw penetrates through the screw fixing seat and is abutted to the vertical plate, and the screw fixing seat is arranged at the lower end of the screw fixing seat.

The utility model has the advantages that: the replacement of the upper and lower rolls can be completed in a short time (about 1 hour).

1. According to the utility model, the lower shaft seat is used for supporting the first compression roller assembly, the lifting assembly can drive the upper shaft seat to move up and down, the fixing assembly is fixedly connected with the second compression roller assembly to fixedly support the second compression roller assembly, so that the distance between the first compression roller assembly and the second compression roller assembly can be better adjusted, different product structures can be formed in the same kiln, and multiple products can be produced in one kiln.

2. According to the utility model, the first driving mechanism and the second driving mechanism are opposite in rotation direction, so that the first compression roller and the second compression roller are opposite in rotation direction, and rolling is convenient.

3. According to the utility model, when the driving part is stretched and retracted during working, the moving end drives the pin boss to move up and down, the pin boss and the upper shaft seat are fixedly connected into a whole, the second outer pipeline penetrates through the pin boss, so that the pin boss moves up and down to drive the second outer pipeline to move up and down, the second longitudinal part is provided with the connecting rod, and the connecting rod is connected with the suspender, so that the second gear can be automatically carried to move up and down during the movement of the driving part, the second gear and the second outer pipeline can be ensured to move simultaneously and cannot be contacted, and the distance between the second compression roller and the first compression roller is further adjusted;

under the drive of first actuating mechanism, first outer pipeline can rotate for first horizontal part, and then drives first compression roller and rotate, and first compression roller turns to opposite with the second compression roller, can mangle better.

4. In the utility model, the distance between the first compression roller and the second compression roller can be adjusted, so that different product structures can be formed in the same kiln, and multiple products can be produced by one kiln.

Drawings

Fig. 1 is a schematic structural diagram of a calendering apparatus according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a first roll assembly in the calendering apparatus according to an embodiment of the present invention.

Fig. 3 is a schematic perspective view of a second roll assembly in the calendering apparatus according to the embodiment of the present invention.

In the figure, 1, a support assembly; 101. a cross beam; 102. a thrust fixing plate; 103. a thrust screw; 104. A lead screw fixing seat;

2. a vertical plate;

3. a fixing assembly; 301. a lower shaft seat; 302. an upper shaft seat; 303. a pin boss;

4. a lifting assembly; 401. a boom; 402. a boom support; 403. a drive member;

5. a first press roll assembly; 501. a first conduit; 502. a first gear; 503. a first outer conduit; 504. a first press roll;

6. a second press roll assembly; 601. a second conduit; 602. a second gear; 603. a second outer duct; 604. a connecting plate; 605. and a second press roll.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1, fig. 1 is a schematic structural diagram of a rolling device according to an embodiment of the present invention, the rolling device includes:

the fixing assembly 3 comprises a lower shaft seat 301 and an upper shaft seat 302, wherein the upper shaft seat 302 is arranged above the lower shaft seat 301, and the lower shaft seat 301 is fixedly connected with an external supporting structure;

the lifting assembly 4 is fixedly connected with an external supporting structure, and the moving end of the lifting assembly 4 is fixedly connected with the top of the upper shaft base 302;

the first compression roller assembly 5 is connected with the lower shaft seat 301, and the first compression roller assembly 5 is connected with an external first driving mechanism and driven by the first driving mechanism to rotate;

second compression roller assembly 6 sets up in the top of first compression roller assembly 5 and with upper shaft base 302 fixed connection, just the top of second compression roller assembly 6 and the lower extreme fixed connection of lifting subassembly 4, second compression roller assembly 6 moves relative first compression roller assembly 5 longitudinal movement under the drive of lifting subassembly 4, just second compression roller assembly 6 still is connected with external second actuating mechanism, rotates under the drive of second actuating mechanism.

Lower shaft seat 301 is used for supporting first compression roller assembly 5, and lifting subassembly 4 work can drive upper shaft seat 302 up-and-down motion, fixed subassembly 3 and second compression roller assembly 6 fixed connection to fixed stay second compression roller assembly 6, thereby adjust the interval between first compression roller assembly 5 and the second compression roller assembly 6 better, thereby can be in the different product structures of shaping in same kiln, realize the multiple product of a kiln production.

As a further solution of the embodiment of the present disclosure, an integrated pin seat 303 is fixedly connected to the top of the upper shaft seat 302, and the upper shaft seat 302 is detachably connected to the lifting assembly 4 through the pin seat 303.

In order to drive the fixing assembly 3 to drive the second compression roller assembly 6 to move longitudinally relative to the first compression roller assembly 5, in the embodiment of the present disclosure, the lifting assembly 4 includes a suspension rod 401, a suspension rod support 402, and a driving member 403, a pin hole is formed in an end of the suspension rod 401 and is used for being connected to the pin boss 303 through a pin shaft, an end of the suspension rod 401 away from the pin boss 303 is connected to a moving end of the driving member 403 through a bolt, a screw, or a weld, the suspension rod support 402 is disposed on an external supporting structure surface through a bolt, a through hole of the driving member 403 is formed in the middle of the suspension rod support 402, and the driving member 403 is disposed in the through hole and is connected to the driving member 403 through a bolt, so as to support the driving member.

In the above solution, the driving member 403 can be controlled by an external controller to move up and down, and the control by the controller is prior art, so it is not described in detail here.

In addition, no matter lower shaft seat 301 or suspender support 402, all need to have external supporting mechanism to come fixed connection, this external supporting mechanism can be wall, or other bracing pieces etc. can set up according to actual conditions can.

Referring to fig. 1 and fig. 2, fig. 2 is a schematic perspective view of a first roll assembly in a rolling device according to an embodiment of the present invention, the first press roller assembly 5 comprises a first duct 501, a first gear 502, a first outer duct 503, a first press roller 504, the first duct 501 is an upper press roll air-cooling blowing duct, the first duct 501 includes a first horizontal portion and a first longitudinal portion, a first outer pipeline 503 is arranged outside the first horizontal part, one end of the first outer pipeline 503 close to the first longitudinal part is provided with a first gear 502, the first gear 502 is connected with an external first driving mechanism through a chain, driven by a first driving mechanism to rotate, the first outer pipeline 503 penetrates through the lower shaft seat 301 and is rotatably connected with the lower shaft seat 301, thus, under the support of the lower shaft seat 301, the first outer pipeline 503 will not fall down due to gravity and will not be attached to the first horizontal part; a first pressing roller 504 is further fixedly disposed outside the first outer pipe 503, and an upper end of the first longitudinal portion extends to the ground or is fixed to an external supporting mechanism (such as a supporting rod or a wall), so as to prevent the first horizontal portion of the first pipe 501 from contacting the first outer pipe 503.

It is understood that the first driving mechanism may be a servo motor, and is connected to the first gear 502 through a chain, and the first outer pipe 503 is rotated relative to the first horizontal portion by the first driving mechanism, so as to drive the first pressing roller 504 to rotate.

Of course, the first gear 502 may also be a rotating wheel, in which case the first gear 502 is connected to the first driving mechanism through a belt, and the fixing position of the first driving mechanism may be selected according to actual situations, which will not be described in detail herein.

Still alternatively, the first driving mechanism may be directly connected to another gear and engaged with the first gear 502 to drive the first gear 502 to rotate.

Referring to fig. 1 and 3, fig. 3 is a schematic perspective view of a second press roll assembly in the rolling device according to the embodiment of the present invention, where the second press roll assembly 6 includes a second pipeline 601, a second gear 602, a second outer pipeline 603, a connecting plate 604, and a second press roll 605, the second pipeline 601 is a lower-pattern roller cooling air blowing pipeline, the second pipeline 601 includes a second horizontal portion and a second longitudinal portion, the second outer pipeline 603 is sleeved outside the second horizontal portion, one end of the second outer pipeline 603 close to the second longitudinal portion is welded, or fixedly connected with the second gear 602 by a bolt or a screw, the second gear 602 is connected with an external second driving mechanism by a chain, the second outer pipeline 603 penetrates through the upper bearing 302 and is rotatably connected with the upper bearing 302, the second outer pipeline 603 is further fixedly provided with a second press roll 605 integrally connected, one end of the second press roll 605 is attached to a side surface of the upper bearing 302 away from the second longitudinal portion, the second longitudinal portion is provided with a connecting rod (not shown) which is connected to the boom 401 so as to automatically carry the second gear 602 up and down when the driving member 403 is moved.

It is understood that the first driving mechanism may be a servo motor, which is connected to the second gear 602 through a chain, and the second outer pipe 603 is rotated relative to the second horizontal portion by the first driving mechanism, so as to drive the second pressing roller 605 to rotate.

Of course, the second gear 602 may also be a rotating wheel, in which case the second gear 602 is connected to the first driving mechanism through a belt, and the fixing position of the first driving mechanism may be selected according to actual situations, which will not be described in detail herein.

Alternatively, the first driving mechanism may be directly connected to another gear and engaged with the second gear 602 to drive the second gear 602 to rotate.

When the driving part 403 stretches and retracts during operation, the moving end drives the pin boss 303 to move up and down, the pin boss 303 is fixedly connected with the upper shaft boss 302 into a whole, the second outer pipeline 603 penetrates through the pin boss 303, the pin boss 303 can drive the second outer pipeline 603 to move up and down when moving up and down, the connecting rod is arranged at the second longitudinal part and is connected with the suspender 401, and therefore the second gear 602 can be automatically carried to move up and down when the driving part 403 moves, the second gear 602 and the second outer pipeline 603 can be guaranteed to move simultaneously and cannot be contacted, and the distance between the second pressing roller 605 and the first pressing roller 504 can be adjusted.

Furthermore, the first driving mechanism and the second driving mechanism in the embodiment of the present disclosure may be servo motors, and the rotation directions of the first driving mechanism and the second driving mechanism are opposite, so that the rotation directions of the first pressing roller 504 and the second pressing roller 605 are opposite, which facilitates rolling.

In addition, the embossing is performed on the first press roller 504 or the second press roller 605 to facilitate the molding.

It should be emphasized that, in the actual production process, the first horizontal portion and the second horizontal portion are located in the kiln, and the lower shaft seat 301 and the upper shaft seat 302 are located outside the kiln, and the first roller assembly 5 and the second roller assembly 6 are not shown in fig. 1 for better showing the structure, but it is understood that the first horizontal portion and the second horizontal portion of the first roller assembly 5 and the second roller assembly 6 vertically penetrate through the lower shaft seat 301 and the upper shaft seat 302, respectively, and extend to the inside of the kiln.

In the actual installation process of the device, the device is not convenient to be directly installed on a wall, so in order to better fix the lifting assembly 4, the first compression roller assembly 5 and the second compression roller assembly 6 and facilitate construction, in the embodiment of the disclosure, the external support structure is the support assembly 1, the support assembly 1 is fixed in the wall through bolts, and the upper part of the support assembly 1 is also fixedly connected with the lifting assembly 4 to support the lifting assembly 4;

further comprising:

the upper end of the vertical plate 2 is connected with the top part of the supporting component 1, the lower end of the vertical plate 2 is in contact with the lower part of the supporting component 1, and the vertical plate 2 is further connected with the fixing component 3.

Supporting component 1 can support lifting component 4, and lifting component 4 can pass through convenient dismantlement of being connected such as bolt with supporting component 1, and avoids damaging the wall because of the vibrations that actuating mechanism leads to, and the use scenario is better, and the both ends of riser 2 and fixed subassembly 3 fixed connection are in order to support fixed subassembly 3, avoid fixed subassembly 3 to lead to the wall to damage because of vibrations.

The supporting assembly 1 comprises a cross beam 101, thrust fixing plates 102, thrust screws 103 and screw fixing seats 104, the cross beam 101 is fixedly connected with a wall through bolts, the thrust fixing plates 102 are symmetrically arranged on two sides of the cross beam 101, the thrust screws 103 are arranged at the lower ends of the thrust fixing plates 102, the thrust screws 103 penetrate through the screw fixing seats 104 and abut against the vertical plates 2 to prevent the vertical plates 2 from shifting and running in the glass production process, and the screw fixing seats 104 are arranged at the lower ends of the screw fixing seats 104.

Specifically, the number of the vertical plates 2 in the embodiment of the present disclosure is two, the two vertical plates are symmetrically disposed at two ends of the lower shaft seat 301, and two sides of the lower shaft seat 301 are fixed to the two vertical plates 2 through bolts, so that the lower shaft seat 301 is conveniently supported.

The working principle is as follows:

when the driving part 403 stretches and retracts during operation, the moving end drives the pin boss 303 to move up and down, the pin boss 303 and the upper shaft boss 302 are fixedly connected into a whole, the second outer pipeline 603 penetrates through the pin boss 303, the pin boss 303 moves up and down to drive the second outer pipeline 603 to move up and down, the second longitudinal part is provided with a connecting rod, and the connecting rod is connected with the suspender 401, so that the second gear 602 can be automatically carried to move up and down when the driving part 403 moves, the second gear 602 and the second outer pipeline 603 can be ensured to move simultaneously and can not be contacted, and the distance between the second compression roller 605 and the first compression roller 504 can be adjusted;

under the driving of the first driving mechanism, the first outer pipe 503 rotates relative to the first horizontal portion, and further drives the first pressing roller 504 to rotate, and the first pressing roller 504 and the second pressing roller 605 rotate in opposite directions, so that better rolling can be achieved.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A calendering apparatus, comprising:

the fixing assembly (3) comprises a lower shaft seat (301) and an upper shaft seat (302), the upper shaft seat (302) is arranged above the lower shaft seat (301), and the lower shaft seat (301) is fixedly connected with an external supporting structure;

the lifting assembly (4) is fixedly connected with an external supporting structure, and the moving end of the lifting assembly (4) is fixedly connected with the top of the upper shaft seat (302);

the first compression roller assembly (5) is connected with the lower shaft seat (301);

the second compression roller assembly (6) is arranged above the first compression roller assembly (5) and fixedly connected with the upper shaft seat (302), the upper portion of the second compression roller assembly (6) is fixedly connected with the moving end of the lifting assembly (4), and the second compression roller assembly (6) moves under the driving of the lifting assembly (4) and moves longitudinally relative to the first compression roller assembly (5).

2. The calendering apparatus according to claim 1, wherein the first roller assembly (5) is connected to and driven by a first drive mechanism from the outside, and the second roller assembly (6) is further connected to and driven by a second drive mechanism from the outside.

3. The calendering apparatus of claim 1, wherein the lifting assembly (4) comprises a boom (401), a boom support (402), and a drive member (403), wherein an end of the boom (401) is connected to the upper shaft seat (302), an end of the boom (401) remote from the upper shaft seat (302) is connected to a movable end of the drive member (403), the boom support (402) is configured to be fixedly disposed on an external support structure surface, and the boom support (402) is fixedly connected to the drive member (403) to support the drive member (403).

4. Calendering device according to claim 1, wherein the first roller assembly (5) comprises a first duct (501), a first gear (502), a first outer duct (503), a first roller (504), the first pipeline (501) comprises a first horizontal part and a first longitudinal part, a first outer pipeline (503) is arranged outside the first horizontal part, one end of the first outer pipeline (503) close to the first longitudinal part is provided with a first gear (502), the first gear (502) is connected with an external first driving mechanism and driven by the first driving mechanism to rotate, the first outer pipeline (503) penetrates through the lower shaft seat (301) and is connected with the lower shaft seat in a rotating way, the outer part of the first outer pipeline (503) is also fixedly provided with a first pressing roller (504), and the upper end of the first longitudinal part extends to the ground or is fixed with an external supporting mechanism.

5. Calendering device according to claim 1, wherein the second roller assembly (6) comprises a second duct (601), a second gear (602), a second outer duct (603), a web (604), a second roller (605), the second pipeline (601) comprises a second horizontal part and a second longitudinal part, a second outer pipeline (603) is sleeved outside the second horizontal part, one end of the second outer pipeline (603) close to the second longitudinal part is fixedly connected with a second gear (602), the second gear (602) is connected with an external second driving mechanism, the second outer pipeline (603) penetrates through the upper shaft seat (302) and is rotationally connected with the upper shaft seat (302), the second outer pipeline (603) is also fixedly provided with a second press roller (605) which is connected integrally, one end of the second pressing roller (605) is attached to the side surface of the upper shaft seat (302) departing from the second longitudinal part.

6. Calendering device according to claim 5, wherein the second longitudinal section is provided with a connecting rod, which is connected to the boom (401).

7. The calendering apparatus of claim 2, wherein the directions of rotation of the first drive mechanism and the second drive mechanism are opposite.

8. Calendering device according to claim 1, wherein the external support structure is a support member (1), the support member (1) being fixed to the wall, the upper part of the support member (1) being further fixedly connected to a lifting member (4) for supporting the lifting member (4).

9. The calendering device according to claim 7, further comprising a vertical plate (2), wherein the upper end of the vertical plate (2) is fixedly connected with the top part of the support assembly (1), the lower end of the vertical plate (2) is contacted with the lower part of the support assembly (1), and the vertical plate (2) is further fixedly connected with the fixing assembly (3).

10. The calendering device according to claim 8, wherein the supporting assembly (1) comprises a cross beam (101), a thrust fixing plate (102), a thrust screw (103) and a screw fixing seat (104), the cross beam (101) is fixedly connected with a wall, the thrust fixing plate (102) is symmetrically arranged on two sides of the cross beam (101), the thrust screw (103) is arranged at the lower end of the thrust fixing plate (102), the thrust screw (103) penetrates through the screw fixing seat (104) and abuts against the vertical plate (2), and the screw fixing seat (104) is arranged at the lower end of the screw fixing seat (104).