Filling machine for lubricating oil production

By designing the filling and adjustment sections, the vertical positioning and horizontal fine-tuning of the lubricating oil filling machine are achieved, solving the problem of cumbersome adjustments when switching between different product specifications. This improves the equipment's versatility and adaptability, and reduces production interruptions and labor costs.

CN224393106UActive Publication Date: 2026-06-23ZHENGZHOU XINAO TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHENGZHOU XINAO TECH CO LTD
Filing Date
2025-08-06
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing lubricating oil filling machines are cumbersome and time-consuming to adjust when switching between different product specifications, resulting in low adaptation efficiency, production interruptions and efficiency losses, and increased production costs.

Method used

A filling machine for lubricating oil production has been designed, comprising a filling section and an adjustment section. By setting limit components, adjustment components and fixing components, the vertical positioning and horizontal fine adjustment of the filling parts can be realized, simplifying the container switching process and improving the equipment's versatility and adaptability.

Benefits of technology

It simplifies the switching process for containers of different sizes, shortens downtime for adjustments, reduces production interruptions, lowers conversion losses and labor costs, and improves the versatility and adaptability of the equipment.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224393106U_ABST
    Figure CN224393106U_ABST
Patent Text Reader

Abstract

The utility model discloses a filling machine for lubricating oil production relates to lubricating oil processing technical field. The utility model discloses a base and the casing of fixed connection at the top of base, the top of base is provided with a plurality of oil pipes, the base bottom is fixedly connected with a plurality of support columns, the casing inner wall is fixedly connected with the support plate no.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model belongs to the field of lubricating oil processing technology, and in particular relates to a filling machine for lubricating oil production. Background Technology

[0002] Lubricating oil is a functional oil used to reduce mechanical friction, reduce wear, cool and clean metal surfaces. It is used in various mechanical scenarios, and its performance is designed according to the machine's speed, load, temperature and other operating conditions. Reasonable selection can ensure the efficient operation of equipment and extend its service life. It is an important consumable in the industrial and mechanical fields. Lubricating oil filling machine is a special equipment for accurately filling various types of lubricating oil. It is suitable for drums, bottles or soft packaging. The equipment adopts a variety of technologies to achieve the required filling accuracy and improves the lubricating oil production efficiency through other equipment.

[0003] Existing lubricating oil filling machines suffer from cumbersome and time-consuming adjustments when switching between different product specifications. They also exhibit significant shortcomings in adaptability, poor compatibility with different container sizes, and difficulty in quickly switching between filling tasks for different products. This adjustment process leads to production interruptions, efficiency losses, and increased production costs. Utility Model Content

[0004] The purpose of this utility model is to provide a lubricating oil filling machine. By setting an adjustment part, it solves the problem of cumbersome and time-consuming adjustment when switching between different specifications of products. Existing lubricating oil filling machines have obvious shortcomings in adaptability, poor adaptability to different specifications of containers, difficulty in quickly switching between filling tasks of different products, and production interruption and efficiency loss during the adjustment process, which increases production costs.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a filling machine for producing lubricating oil, comprising a base and a housing fixedly connected to the top of the base. Several oil supply pipes are arranged above the top of the base, and several support columns are fixedly connected to the bottom of the base. A support plate is fixedly connected to the inner wall of the housing. The machine also includes a filling section located above the base, and an adjustment section located on the front side of the housing. The oil supply pipes connect to multiple components.

[0007] Furthermore, the filling unit includes an oil storage assembly disposed above the base; an oil delivery assembly disposed to the right of the oil storage assembly; a filling assembly, both of which are disposed on the adjustment unit; and a conveying assembly disposed above the base; wherein, some parts of the oil delivery assembly are disposed inside the housing, and the conveying assembly is disposed on the front side of the housing.

[0008] Furthermore, the adjustment part includes a limiting component disposed on the front side of the housing, an adjustment component disposed on the front side of the housing, and a fixing component disposed on the front side of the housing; wherein the adjustment component passes through the limiting component and the fixing component.

[0009] Furthermore, the oil storage assembly includes several brackets fixedly connected to the base, with a tank fixedly connected to the outer wall of each bracket, and a tank fixedly connected to the top of each bracket. The top of the tank is connected to an oil inlet, and the bottom of the tank is connected to an oil outlet. The oil delivery assembly includes a gear pump fixedly connected to the base, and an oil distribution pipe fixedly connected to the outer wall of the support plate. The oil storage assembly is located to the left of the gear pump for storage, and the gear pump is positioned between the oil storage assembly and the housing. The oil delivery pipe connects the oil outlet, the gear pump, the oil distribution pipe, and the filling assembly for delivery. The brackets are arranged in a circular array around the tank.

[0010] Furthermore, the two filling components include two slide plates disposed on the front side of the housing, a motor disposed above each of the two slide plates, several sliders fixedly connected to the outer walls of the two slide plates, and filling components fixedly connected to the inner walls of the two slide plates, with an oil injection pipe connected to the bottom of the filling component; wherein, there are two filling components, which are connected by an oil supply pipe and an oil distribution pipe for filling.

[0011] Furthermore, the conveying assembly includes a fixed frame fixedly connected above the base, and a plurality of rotating rods are rotatably connected to the inner wall of the fixed frame; wherein the plurality of rotating rods are arranged in a linear array for conveying and facilitating the movement of large-sized containers.

[0012] Furthermore, the limiting component includes a limiting plate one fixedly connected to the top of the housing, two sliding rods fixedly connected to the outer wall of the limiting plate one, and a limiting plate two fixedly connected to the bottom of the two sliding rods, the limiting plate two being fixedly connected to the outer wall of the housing; the adjusting component includes a fixing plate one fixedly connected above the limiting plate one, a screw threadedly connected to the inner wall of the fixing plate one, and a hand crank fixedly connected to the top of the screw; wherein, the limiting component is located on the front side of the base for limiting the position, the inner wall of the fixing plate one is threaded, and the screw passes through the fixing plate one and the limiting plate one for adjusting the height.

[0013] Furthermore, the fixing assembly includes a second fixing plate threaded to the outer wall of the screw, two fixing rings fixedly connected to the bottom of the second fixing plate, a third fixing plate fixedly connected to the bottom of the two fixing rings, a sliding rod slidably connected to the front side of the third fixing plate, and the inner wall of the sliding rod slidably connected to the slider; wherein, the sliding rod has an internal groove that runs through the entire part, the slider slides along the internal sliding groove of the sliding rod, the screw passes through the second fixing plate and the third fixing plate, the sliding rod passes through the entire fixing assembly, and the two fixing rings are located between the second fixing plate and the third fixing plate to ensure that the sliding rod remains horizontal.

[0014] Furthermore, the filling component includes a housing fixedly connected to the inner wall of the slide plate, a piston slidably connected to the inner wall of the housing, a tension shaft fixedly connected to the top of the piston, two sealing rings fixedly connected to the outer wall of the piston, the outer walls of the two sealing rings contacting the housing, an oil injection pipe connected to the bottom of the housing, and a filling nozzle threadedly connected to the bottom of the housing. The two filling components have the same structure, the oil injection pipe is connected to the oil distribution pipe through the oil delivery pipe, the bottom of the housing is threaded, and the filling nozzle is detachable, improving the versatility of the filling assembly.

[0015] This utility model has the following beneficial effects:

[0016] 1. By setting up a filling section, during filling, the raw material enters the tank through the oil inlet, then through the oil outlet, and enters the gear pump via the oil delivery pipe. The gear pump is started, drawing the raw material through the oil delivery pipe into the oil distribution pipe. The oil distribution pipe then delivers the raw material into two separate oil injection pipes. After the gear pump starts, the motor is energized, driving the tension shaft to move vertically. The tension shaft is connected to a piston, which moves upwards until the piston is above the oil injection pipe, initiating filling. After the gear pump stops working, the motor is energized again, driving the tension shaft to move vertically, causing the piston to... Moving downwards lowers the piston height until it is below the injection pipe, stopping the injection process and preventing dripping and stringing after injection. Furthermore, the injection nozzle can be easily disassembled via threads on the bottom outer wall of the housing, allowing for the replacement of different nozzles for different injection speeds, thus improving versatility. The motor drives the vertical movement of the tension shaft and piston, controlling start and stop to avoid dripping and stringing. Additionally, the threaded design at the bottom of the housing facilitates easy disassembly of the injection nozzle, allowing for the replacement of different nozzle specifications for different injection speeds, effectively enhancing the equipment's versatility.

[0017] 2. By setting up an adjustment section, the height can be adjusted when filling stops or when changing to containers of different sizes. By rotating the hand crank, the screw rotates, driving the fixed component to move up and down. The vertical position of the filling component can be adjusted via the screw. The two sliding rods remain stationary, and the fixed component moves along the sliding rods to ensure that the horizontal position remains unchanged. In addition, the sliding rods have a moving groove inside, and the slider is installed in the moving groove. It moves horizontally along the moving groove, and the filling component can also be adjusted to a horizontal position along the moving groove. Furthermore, the container is placed on the rotating rod, which is convenient to move after filling large-sized containers. This achieves vertical positioning and horizontal fine adjustment of the filling component. At the same time, the sliding rods ensure horizontal stability during the adjustment process, avoiding recalibration, simplifying the switching process for different container sizes, shortening downtime for adjustment, reducing production interruptions, and lowering conversion losses and labor costs.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the filling section structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the adjustment part of this utility model;

[0023] Figure 4 This is a schematic diagram of the fixing component structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the filling section of this utility model.

[0025] Figure 6 This is a partial cross-sectional view of some components of the filling section of this utility model;

[0026] Figure 7 This is a schematic diagram of some components of the filling section of this utility model.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Base; 111. Shell; 112. Support column; 113. Oil delivery pipe; 114. Support plate one; 2. Filling section; 21. Oil storage assembly; 211. Tank body; 212. Oil inlet; 213. Oil outlet; 214. Bracket; 22. Oil delivery assembly; 221. Gear pump; 222. Oil distribution pipe; 23. Filling assembly; 231. Slide plate; 232. Slider; 233. Motor; 234. Shell; 235. Piston; 236. Sealing ring; 23 7. Tensioning shaft; 238. Filling nozzle; 239. Oil injection pipe; 24. Conveying assembly; 241. Fixing frame; 242. Rotating rod; 3. Adjusting part; 31. Limiting assembly; 311. Limiting plate one; 312. Slide rod; 313. Limiting plate two; 32. Adjusting assembly; 321. Hand crank handle; 322. Fixing plate one; 323. Screw; 33. Fixing assembly; 331. Fixing plate two; 332. Fixing ring; 333. Fixing plate three; 334. Sliding rod. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-7 As shown, this utility model, named "A Filling Machine for Lubricating Oil Production," includes a base 1 and a housing 111 fixedly connected to the top of the base 1. Several oil supply pipes 113 are arranged above the top of the base 1, and several support columns 112 are fixedly connected to the bottom of the base 1. A support plate 114 is fixedly connected to the inner wall of the housing 111. The machine also includes a filling section 2, located above the base 1, and an adjustment section 3, located on the front side of the housing 111. The oil supply pipes 113 connect to multiple components.

[0031] The filling unit 2 includes an oil storage assembly 21, which is disposed above the base 1; an oil delivery assembly 22, which is disposed to the right of the oil storage assembly 21; two filling assemblies 23, both of which are disposed on the adjusting unit 3; and a conveying assembly 24, which is disposed above the base 1. Parts of the oil delivery assembly 22 are disposed inside the housing 111, and the conveying assembly 24 is disposed on the front side of the housing 111. The oil storage assembly 21 includes several supports 214 fixedly connected to the base 1, a tank 211 fixedly connected to the outer wall of the supports 214, and the tank 211 fixedly connected to the top of the supports 214. An oil inlet 212 is connected to the top of the tank 211, and an oil outlet 212 is connected to the bottom of the tank 211. There is an oil outlet 213; the oil delivery assembly 22 includes a gear pump 221 fixedly connected to the base 1, and an oil distribution pipe 222 fixedly connected to the outer wall of the support plate 114; wherein, the oil storage assembly 21 is located to the left of the gear pump 221 for storage, the gear pump 221 is located between the oil storage assembly 21 and the housing 111, the oil delivery pipe 113 connects the oil outlet 213, the gear pump 221, the oil distribution pipe 222 and the filling assembly 23 for delivery, the support 214 is arranged in a circumferential array around the tank 211, the two filling assemblies 23 include two slide plates 231 located on the front side of the housing 111, a motor 233 is respectively installed above the two slide plates 231, and several sliders 232 are fixedly connected to the outer wall of the two slide plates 231. Filling components are fixedly connected to the inner wall of the slide plate 231, and an oil injection pipe 239 is provided at the bottom of each filling component. Two filling components are provided, connected by an oil supply pipe 113 and an oil distribution pipe 222, for filling. Each filling component includes a shell 234 fixedly connected to the inner wall of the slide plate 231. A piston 235 is slidably connected to the inner wall of the shell 234. A tension shaft 237 is fixedly connected to the top of the piston 235. Two sealing rings 236 are fixedly connected to the outer wall of the piston 235, and the outer walls of both sealing rings 236 are in contact with the shell 234. An oil injection pipe 239 is provided at the bottom of the shell 234, and a filling nozzle 238 is threadedly connected to the bottom of the shell 234. The two filling components have identical structures, and the oil injection pipe 239 is connected to the inner wall of the slide plate 231 via an oil supply pipe 113 and an oil distribution pipe 222. The oil pipe 113 is connected to the oil distribution pipe 222. The bottom of the outer casing 234 is threaded, and the filling nozzle 238 is detachable, which improves the versatility of the filling component 23. The conveying component 24 includes a fixed frame 241 fixedly connected to the base 1. Several rotating rods 242 are rotatably connected to the inner wall of the fixed frame 241. The rotating rods 242 are arranged in a linear array for conveying and facilitating the movement of large containers. By setting the filling section 2, the motor 233 drives the vertical movement of the tension shaft 237 and the piston 235 to control the start and stop to avoid dripping and stringing. In addition, the threaded design at the bottom of the outer casing 234 allows the filling nozzle 239 to be easily disassembled. Different specifications of filling nozzles 239 can be replaced for different filling speeds, which effectively improves the versatility of the equipment.

[0032] The adjustment unit 3 includes a limiting component 31, which is located on the front side of the housing 111; an adjustment component 32, which is also located on the front side of the housing 111; and a fixing component 33, which is located on the front side of the housing 111. The adjustment component 32 passes through the limiting component 31 and the fixing component 33. The limiting component 31 includes a first limiting plate 311 fixedly connected to the top of the housing 111. Two sliding rods 312 are fixedly connected to the outer wall of the first limiting plate 311. A second limiting plate 313 is fixedly connected to the bottom of the two sliding rods 312 and is fixedly connected to the outer wall of the housing 111. The adjustment component 32 includes a first fixing plate 322 fixedly connected above the first limiting plate 311. A screw 323 is threadedly connected to the inner wall of the first fixing plate 322, and a hand crank 321 is fixedly connected to the top of the screw 323. The limiting component 31 is located on the front side of the base 1 and is used to limit the position. The first fixing plate 322... The inner wall is threaded, and the screw 323 passes through the first fixing plate 322 and the first limiting plate 311 for height adjustment. The fixing assembly 33 includes a second fixing plate 331 threaded to the outer wall of the screw 323. Two fixing rings 332 are fixedly connected to the bottom of the second fixing plate 331. A third fixing plate 333 is fixedly connected to the bottom of the two fixing rings 332. A sliding rod 334 is slidably connected to the front side of the third fixing plate 333. The inner wall of the sliding rod 334 is slidably connected to the slider 232. The sliding rod 334 has a groove inside that runs through the entire part. The slider 232 slides along the sliding groove inside the sliding rod 334. The screw 323 passes through the second fixing plate 331 and the third fixing plate 333. The sliding rod 312 passes through the entire fixing assembly 33. The two fixing rings 332 are located between the second fixing plate 331 and the third fixing plate 333 to ensure that the sliding rod 334 remains horizontal. By setting the adjustment part 3, the vertical positioning and horizontal fine adjustment of the filling part are realized. Meanwhile, slide bar 312 ensures horizontal stability during the adjustment process, avoids recalibration, simplifies the switching process for containers of different sizes, shortens downtime for adjustment, reduces production interruptions, and lowers conversion losses and labor costs.

[0033] A specific application of this embodiment is as follows: In use, the raw material enters the tank 211 through the oil inlet 212, then through the oil outlet 213, and enters the gear pump 221 through the oil delivery pipe 113. The gear pump 221 is started, and it draws the raw material through the oil delivery pipe 113 into the oil distribution pipe 222. The oil distribution pipe 222 then delivers the raw material into two oil injection pipes 239. After the gear pump 221 starts, the motor 233 is energized, driving the tension shaft 237 to move vertically. The tension shaft 237 is connected to the piston 235, causing the piston 235 to move upwards. 235 moves upward, making piston 235 higher than oil injection pipe 239, and filling begins. After gear pump 221 stops working, motor 233 is energized. Motor 233 drives tension shaft 237 to move vertically, making piston 235 move downward, lowering the height of piston 235. When piston 235 is lower than oil injection pipe 239, filling stops, preventing dripping and stringing after filling. In addition, by setting threads on the bottom outer wall of housing 234, filling nozzle 238 can be easily disassembled. Different filling nozzles 238 can be replaced for different filling speeds, improving versatility. When stopping filling or changing to containers of different sizes, the height is adjusted by rotating the hand crank 321, which rotates the screw 323 and drives the fixing component 33 to move up and down. The filling component 23 can be adjusted vertically by the screw 323. The two sliding rods 312 are fixed, and the fixing component 33 moves along the sliding rods 312 to ensure that the horizontal position remains unchanged. In addition, the sliding rod 334 is provided with a moving groove, and the slider 232 is installed in the moving groove and moves horizontally along the moving groove. The filling component can also be adjusted horizontally along the moving groove. In addition, the container is placed on the rotating rod 242, which is convenient for moving after the filling of large-sized containers is completed.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A filling machine for producing lubricating oil, comprising a base (1) and a housing (111) fixedly connected to the top of the base (1), wherein a plurality of oil supply pipes (113) are arranged above the top of the base (1), a plurality of support columns (112) are fixedly connected to the bottom of the base (1), and a support plate (114) is fixedly connected to the inner wall of the housing (111), characterized in that, Also includes: A filling section (2) is disposed above the base (1); as well as Adjustment part (3), the adjustment part (3) is disposed on the front side of housing (111); Among them, several oil pipelines (113) connect multiple components; The filling section (2) includes an oil storage assembly (21), which is disposed above the base (1); Oil delivery assembly (22), which is located to the right of oil storage assembly (21); Filling assembly (23), both filling assemblies (23) are disposed on the adjustment section (3); and A conveying assembly (24) is disposed above the base (1); Among them, some parts of the oil delivery assembly (22) are located inside the housing (111), and the delivery assembly (24) is located on the front side of the housing (111); The adjustment part (3) includes a limiting component (31), which is disposed on the front side of the housing (111). Adjustment assembly (32); the adjustment assembly (32) is disposed on the front side of the housing (111); and A fixing component (33) is disposed on the front side of the housing (111); The adjustment component (32) passes through the limiting component (31) and the fixing component (33). The oil storage assembly (21) includes several brackets (214) fixedly connected to the base (1) above, a tank (211) fixedly connected to the outer wall of the several brackets (214), a tank (211) fixedly connected to the top of the several brackets (214), an oil inlet (212) connected to the top of the tank (211), and an oil outlet (213) connected to the bottom of the tank (211). The oil delivery assembly (22) includes a gear pump (221) fixedly connected above the base (1), and an oil distribution pipe (222) is fixedly connected to the outer wall of the support plate (114). Among them, the oil storage component (21) is located on the left side of the gear pump (221) for storage, the gear pump (221) is located between the oil storage component (21) and the shell (111), the oil delivery pipe (113) connects the oil outlet (213), the gear pump (221), the oil distribution pipe (222) and the filling component (23) for delivery, and the support (214) is arranged in a circular array around the tank (211); The two filling assemblies (23) include two slide plates (231) disposed on the front side of the housing (111), a motor (233) is disposed above the two slide plates (231), a plurality of sliders (232) are fixedly connected to the outer wall of the two slide plates (231), and filling components are fixedly connected to the inner wall of the two slide plates (231), and an oil injection pipe (239) is connected to the bottom of the filling component. There are two filling components, which are connected by an oil supply pipe (113) and an oil distribution pipe (222) for filling. The filling component includes a housing (234) fixedly connected to the inner wall of the slide plate (231), a piston (235) slidably connected to the inner wall of the housing (234), a tension shaft (237) fixedly connected to the top of the piston (235), two sealing rings (236) fixedly connected to the outer wall of the piston (235), the outer walls of the two sealing rings (236) are in contact with the housing (234), an oil injection pipe (239) is connected to the bottom of the housing (234), and a filling nozzle (238) is threadedly connected to the bottom of the housing (234). The two filling components have the same structure. The oil injection pipe (239) is connected to the oil distribution pipe (222) through the oil delivery pipe (113). The bottom of the outer shell (234) is provided with threads, and the filling nozzle (238) is detachable, which improves the versatility of the filling component (23).

2. The filling machine for lubricating oil production according to claim 1, characterized in that, The conveying assembly (24) includes a fixed frame (241) fixedly connected above the base (1), and a plurality of rotating rods (242) are rotatably connected to the inner wall of the fixed frame (241). Among them, several rotating rods (242) are arranged in a linear array for conveying and facilitating the movement of large containers.

3. A filling machine for lubricating oil production according to claim 2, characterized in that, The limiting component (31) includes a limiting plate one (311) fixedly connected to the top of the housing (111), two sliding rods (312) fixedly connected to the outer wall of the limiting plate one (311), and a limiting plate two (313) fixedly connected to the bottom of the two sliding rods (312), and the limiting plate two (313) fixedly connected to the outer wall of the housing (111); The adjustment assembly (32) includes a fixing plate (322) fixedly connected above the limiting plate (311), and a screw (323) is threadedly connected to the inner wall of the fixing plate (322), and a hand crank (321) is fixedly connected to the top of the screw (323). The limiting component (31) is located on the front side of the base (1) to limit the position. The inner wall of the fixing plate (322) is provided with threads, and the screw (323) passes through the fixing plate (322) and the limiting plate (311) to adjust the height.

4. A filling machine for lubricating oil production according to claim 3, characterized in that, The fixing component (33) includes a fixing plate two (331) threaded to the outer wall of the screw (323), two fixing rings (332) fixedly connected to the bottom of the fixing plate two (331), a fixing plate three (333) fixedly connected to the bottom of the two fixing rings (332), a sliding rod (334) slidably connected to the front side of the fixing plate three (333), and the inner wall of the sliding rod (334) slidably connected to the slider (232); The sliding rod (334) has an internal slot that runs through the entire part. The slider (232) slides along the internal sliding slot of the sliding rod (334). The screw (323) runs through the second fixed plate (331) and the third fixed plate (333). The sliding rod (312) runs through the entire fixed assembly (33). The two fixing rings (332) are located between the second fixed plate (331) and the third fixed plate (333) to ensure that the sliding rod (334) remains horizontal.