Automatic transmission chain tensioning device of submerged chain conveyor and using method of automatic transmission chain tensioning device

By designing an automated transmission chain tensioning device in the slag retrieval machine, using mechanical automation processing and the cooperation of spring and hydraulic cylinders, the operation problems caused by chain slack are solved, the efficiency and reliability of the equipment are improved, and the cost and workload are reduced. .

CN119218641APending Publication Date: 2024-12-31HEBEI HANFENG POWER GENERATION CO LTD +1
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Patent Information

Application Number
CN202411469939.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-21
Publication Date
2024-12-31

AI Technical Summary

Technical Problem

The transmission chain of the slag retrieval machine is prone to slack during the transmission process, which leads to slip and stops, and cannot effectively drive the load, affecting the operation of the entire machine. The manual tensioning process is cumbersome, which increases workload and cost.

Method used

An automatic tensioning device for transmission chain is designed, and mechanical automation is used to achieve automatic tensioning of the chain through the cooperation of the U-frame and the mounting frame, using springs and hydraulic cylinders to reduce manual adjustments and improve operating efficiency.

Benefits of technology

It realizes automatic tensioning of the transmission chain, improves the equipment's usage effect and operating efficiency, reduces costs, extends the equipment's life, and ensures a stable and reliable operating state.

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Abstract

The invention discloses an automatic transmission chain tensioning device of a submerged chain conveyor and a using method, and belongs to the technical field of submerged chain conveyors. Comprising a slag salvaging rack, a transmission gear is installed on one side of the interior of the slag salvaging rack, a first tensioning seat on a first tensioning gear is in butt joint with the interior of a guide hole in a U-shaped frame in a sliding mode through a guide column, a spring is arranged on the outer wall of the guide column in a sleeving mode, and according to the effect of the elastic reacting force of the spring, the slag salvaging rack is driven to rotate; according to the transmission chain tensioning device, the first tensioning gear is arranged on the transmission chain, the first tensioning gear is elastically pushed by the spring to abut against and be meshed with the transmission chain, and then the transmission chain can be tensioned, the movable base is fixedly installed at the output end of the hydraulic cylinder, and the second tensioning base on the second tensioning gear is installed in the guide groove in the movable base through the guide base in a sliding mode; and the installed second tensioning gear is adjusted in a lifting mode through the hydraulic cylinder till the second tensioning gear is meshed with the transmission chain and is stretched upwards, and the pulling tensioning state is achieved.
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Description

Technical Field

[0001] The invention belongs to the technical field of slag scooping machines, and in particular relates to an automatic transmission chain tensioning device of a slag scooping machine and a use method thereof. Background Art

[0002] As a mechanical device specially designed for efficient cleaning, precise separation and proper treatment of solid impurities contained in various liquids, the importance of slag remover has been widely recognized and deeply applied in many industrial fields such as sewage treatment, mining, metallurgical production, etc. This type of equipment can ensure the purification of liquid media in the production process and recover valuable solid substances through its unique structural design, which plays a vital role in maintaining the cleanliness of the production environment, improving resource utilization and ensuring the smooth progress of subsequent processes.

[0003] However, the transmission chain currently used in the slag picker is in the transmission process for a long time, and the wear of the transmission chain and the transmission gear causes the chain to become longer, thereby causing relaxation. Changes in ambient temperature will affect the expansion and contraction of the material, and may also cause the transmission chain to relax. When the transmission chain on the slag picker is in a relaxed state, it is easy to cause slipping and pauses during transportation, and it cannot effectively drive the load, thereby affecting the operation of the entire machine. At the same time, if the transmission chain is too loose, it is easy to fall off during operation, causing equipment shutdown and even causing safety hazards. When the transmission chain of the slag picker is tensioned, the tensioning method is particularly important. Manual tensioning of the transmission chain involves relevant technical personnel. On the one hand, it increases the corresponding workload. On the other hand, the tensioning state of the transmission chain needs to be continuously debugged to achieve the optimal tensioning state. The process is relatively troublesome, thereby affecting the use effect and operation efficiency of the slag picker.

[0004] Therefore, developing a device that can realize automatic tensioning of the slag scoop transmission chain has become the key to solving the current difficulties and improving equipment performance. Summary of the invention

[0005] The purpose of the present invention is to overcome the problem that the chain of the existing slag scoop machine is loose during the transmission process, causing the chain to slip and stop, and the load cannot be effectively driven, which affects the operation of the whole machine. An automatic tensioning device and a method for using the transmission chain of the slag scoop machine are provided. The whole process adopts mechanical automatic tensioning processing, which effectively realizes the automatic tensioning effect of the transmission chain of the slag scoop machine, and also effectively improves the use effect and operation efficiency of the slag scoop machine.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: The invention discloses an automatic transmission chain tensioning device for a slag scooping machine, comprising a slag scooping machine frame, wherein the slag scooping machine frame comprises a transmission gear and a U-shaped frame, a transmission chain is meshedly arranged on the transmission gear, a first tensioning gear is arranged inside the U-shaped frame, a mounting frame is arranged on the top of the slag scooping machine frame, a second tensioning gear is arranged inside the mounting frame, and the transmission chain links the first tensioning gear and the second tensioning gear.

[0007] The U-shaped frame is provided with a guide hole, a guide column is arranged through the guide hole, a spring is arranged around the outer wall of the guide column, the guide column is connected to the first tensioning seat, and the first tensioning seat is provided with a first tensioning gear.

[0008] The guide column is fixed on the U-shaped frame through a first nut.

[0009] A hydraulic cylinder is installed on the top of the mounting frame, and an output end of the hydraulic cylinder is connected to the moving seat.

[0010] A second tensioning seat is installed at the bottom of the movable seat, and the second tensioning seat is connected to a second tensioning gear.

[0011] The movable seat is provided with a guide groove, the upper part of the second tensioning seat is connected with the guide seat, and the guide seat is clamped in the guide groove.

[0012] The movable seat is provided with a first mounting hole, the guide groove is provided with a second mounting hole, the screw rod passes through the first mounting hole and the second mounting hole, and the guide seat and the guide groove are fixed by a second nut.

[0013] A method for using an automatic tensioning device for a driving chain of a slag scooping machine includes meshing a driving chain with a driving gear, a first tensioning gear and a second tensioning gear, starting a slag scooping machine frame, and controlling the tensioning of the driving chain under the cooperation of a U-shaped frame and a mounting frame.

[0014] The tensioning process of the U-shaped frame controlling the transmission chain is: The first tensioning gear is rotatably connected to the first tensioning seat, a spring is sleeved on the outer wall of the guide column, and according to the elastic reaction force of the spring, the spring elastically pushes the first tensioning gear to be tightly engaged with the transmission chain.

[0015] The tensioning process of the mounting frame controlling the transmission chain is as follows: The movable seat is fixed at the output end of the hydraulic cylinder, the second tensioning seat is installed in the guide groove through the guide seat, and the second tensioning gear is installed on the second tensioning seat. Through the lifting and lowering adjustment of the hydraulic cylinder, the second tensioning gear is engaged with the transmission chain and the hydraulic cylinder is stretched upward to achieve the pulling and tensioning state of the transmission chain.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an automatic tensioning device for a transmission chain of a slag scooping machine and a method for using the device, comprising a slag scooping machine frame, the slag scooping machine frame including a transmission gear and a U-shaped frame inside, a transmission chain meshed on the transmission gear, a first tensioning gear inside the U-shaped frame, a mounting frame arranged on the top of the slag scooping machine frame, a second tensioning gear inside the mounting frame, the transmission chain meshed with the transmission gear, the first tensioning gear and the second tensioning gear, the slag scooping machine frame is started, and the transmission chain tensioning is controlled under the cooperation of the U-shaped frame and the mounting frame. The whole process adopts mechanical automatic tensioning processing, during which there is no need for related technical personnel to manually adjust the tensioning state of the transmission chain, reducing the investment of personnel costs and the degree of personnel workload, effectively realizing the automatic tensioning effect of the transmission chain of the slag scooping machine, and effectively improving the use effect and operation efficiency of the slag scooping machine. The device can not only provide a stable and reliable tensioning function, but also significantly reduce costs, improve overall performance and efficiency, and has a simple structure and broad application prospects.

[0017] Furthermore, the guide column is detachable, and the spring can be easily removed and replaced through the detachable nut, so as to avoid the poor spring effect after long-term use. This not only extends the service life of the slag scoop machine, but also effectively improves the maintenance efficiency and reliability of the equipment, ensuring that the slag scoop machine can continue to maintain a good working condition during long-term use, thereby avoiding various problems and failures caused by poor spring effect.

[0018] Furthermore, the guide column is limited by the nut and the first tensioning seat to prevent the guide column from being separated from the U-shaped frame. By tightening the nut, the guide column can be firmly locked in the desired position, effectively preventing it from displacement or shaking during operation. The first tensioning seat can fit the guide column tightly and provide additional support and fixing effects through its unique structure and material properties. This design not only improves the positioning accuracy of the guide column, but also ensures the stability and reliability of the mechanical system during operation, enhances the firmness of the guide column, and improves its ability to withstand heavy loads and complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic front cross-sectional view of the overall structure provided by the present invention; Figure 2 The present invention provides Figure 1 A magnified view of the structure at A; Figure 3 A schematic front cross-sectional view of a mounting frame provided by the present invention; Figure 4 A schematic diagram of the upper half of the mobile base provided by the present invention; Figure 5 This is a schematic diagram of the lower half of the moving seat provided by the present invention.

[0021] Explanation of the reference numerals in the figure: 1. slag scooping frame; 101. transmission gear; 102. transmission chain; 2. U-shaped frame; 201. guide hole; 202. guide column; 203. first nut; 204. first tensioning seat; 205. spring; 206. first tensioning gear; 3. mounting frame; 301. hydraulic cylinder; 4. moving seat; 401. second tensioning seat; 402. guide groove; 403. guide seat; 404. second tensioning gear; 405. first mounting hole; 406. second mounting hole; 407. screw; 408. second nut. DETAILED DESCRIPTION

[0022] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0023] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0027] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0028] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0029] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0030] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] Embodiment 1: like Figure 1As shown, an automatic tensioning device for a transmission chain of a slag scooping machine and a method of using the device include a slag scooping machine frame 1, a transmission gear 101 is installed on one side of the interior of the slag scooping machine frame 1, a transmission chain 102 is meshed on the outer wall of the transmission gear 101, a U-shaped frame 2 is installed on the other side of the interior of the slag scooping machine frame 1, the U-shaped frame 2 includes a first tensioning gear 206, a mounting frame 3 is installed on one side of the top of the slag scooping machine frame 1, a second tensioning gear 404 is arranged inside the mounting frame 3, and the transmission chain 102 meshes with the first tensioning gear 206 and the second tensioning gear 404.

[0032] In this embodiment, the transmission chain 102 is meshed with the transmission gear 101, the first tensioning gear 206 and the second tensioning gear 404, the slag scooping frame 1 is started, and the transmission chain 102 is tensioned in cooperation with the U-shaped frame 2 and the mounting frame 3. The entire process adopts mechanical automatic tensioning processing, during which there is no need for related technicians to manually adjust the tensioning state of the transmission chain, reducing the investment of personnel costs and the workload of personnel, effectively realizing the automatic tensioning effect of the transmission chain of the slag scooping machine, and effectively improving the use effect and operation efficiency of the slag scooping machine.

[0033] Embodiment 2: like Figure 2 As shown, on the basis of Example 1, as a further improvement of the present invention, a guide hole 201 is opened on the surface of the U-shaped frame 2, and a guide column 202 is installed through the guide hole 201. The outer wall of the guide column 202 is slidably connected to the inner wall of the guide hole 201, and a first nut 203 is threadedly connected to one side of the outer wall of the guide column 202. A spring 205 is arranged around the outer wall of the guide column 202, and a first tensioning seat 204 is installed at one end of the guide column 202. A first tensioning gear 206 is rotatably connected to the outer wall of one side of the first tensioning seat 204. In this embodiment, the U-shaped frame 2 is fixed at the required designated position by fastening bolts, and the guide column 202 is slidably docked in the guide hole 201 on the U-shaped frame 2, and the first nut 203 is installed on one side of the outer wall of the guide column 202 in a threaded connection manner, so that the guide column 202 moves horizontally left and right on the U-shaped frame 2. The first nut 203 and the first tensioning seat 204 after installation limit the guide column 202 to prevent the guide column 202 from detaching from the U-shaped frame 2. The tensioning gear 206 is rotatably connected to the first tensioning seat 204, and a spring 205 is mounted on the outer wall of the guide column 202. According to the effect of the elastic reaction force of the spring 205, the spring 205 elastically pushes the first tensioning gear 206 to tightly engage with the transmission chain 102, so as to achieve the tensioning treatment of the transmission chain 102. At the same time, the guide column 202 has a detachable effect and a detachable nut A203, which is convenient for taking out and replacing the spring 205, and trying to avoid the situation where the spring 205 has poor effect after long-term use.

[0034] Embodiment 3: like Figures 3 to 5 As shown, on the basis of Example 1, as a further improvement of the present invention, a mounting frame 3 is installed on one side of the top of the slag scooping frame 1, a hydraulic cylinder 301 is installed on the top of the mounting frame 3, a moving seat 4 is installed at the output end of the hydraulic cylinder 301, a second tensioning seat 401 is installed at the bottom of the moving seat 4, a guide groove 402 is provided on the lower surface of the moving seat 4, a guide seat 403 is provided on the top of the second tensioning seat 401, the outer wall of the guide seat 403 is slidably connected to the inner wall of the guide groove 402, and the second tensioning gear 404 is rotatably connected to the bottom of the second tensioning seat 401, a first mounting hole 405 is provided on the surface of the moving seat 4, a second mounting hole 406 is provided on the surface of the guide seat 403, a screw 407 is provided inside the second mounting hole 406 and the first mounting hole 405, the outer walls of the screw 407 are slidably connected to the inner walls of the second mounting hole 406 and the first mounting hole 405, and second nuts 408 are threadedly connected to the outer walls of the screw 407.

[0035] In this embodiment, the movable seat 4 is installed and fixed at the output end of the hydraulic cylinder 301 on the mounting frame 3, and the second tensioning seat 401 on the second tensioning gear 404 is installed in the guide groove 402 on the movable seat 4 in a sliding manner by the guide seat 403. The installation and disassembly effect can be achieved by pushing or pulling the second tensioning seat 401. According to the installed second tensioning seat 401, the screw 407 slides through the first mounting hole 405 and the second mounting hole 406, and then the second nut 408 is threadedly tightened to achieve the installation and fixing of the second tensioning seat 401. At the same time, the installed second tensioning gear 404 is raised and lowered by the hydraulic cylinder 301 until the second tensioning gear 404 is engaged with the transmission chain 102, and the hydraulic cylinder 301 is adjusted upward to reach the pulling and tensioning state.

[0036] Working principle of the present invention: When using the device, the U-shaped frame 2 is fixed at the required designated position by fastening bolts, and the guide column 202 is connected to the guide hole 201 on the U-shaped frame 2 in a sliding manner. The first nut 203 is installed on one side of the outer wall of the guide column 202 in a threaded connection manner, so that the guide column 202 moves horizontally left and right on the U-shaped frame 2. The first nut 203 and the first tensioning seat 204 after installation limit the guide column 202 to prevent the guide column 202 from detaching from the U-shaped frame 2 The situation occurs by rotating the first tensioning gear 206 to connect it to the first tensioning seat 204, and installing the spring 205 on the outer wall of the guide column 202. According to the effect of the elastic reaction force of the spring 205, the spring 205 elastically pushes the tensioning gear A206 to press against the transmission chain 102, and at the same time, the mobile seat 4 is fixed to the output end of the hydraulic cylinder 301 on the mounting frame 3, and the second tensioning seat 401 on the second tensioning gear 404 is slidably installed on the mobile seat 4 by the guide seat 403. The second tensioning seat 401 is pushed in or pulled out of the guide groove 402 to achieve the installation and disassembly effect. According to the installed second tensioning seat 401, the screw 407 slides through the first installation hole 405 and the second installation hole 406, and then the second nut 408 is threadedly tightened to achieve the installation and fixing of the second tensioning seat 401. At the same time, the installed second tensioning gear 404 is raised and lowered by the hydraulic cylinder 301 until the second tensioning gear 404 is engaged with the transmission chain 102 and stretched upward to achieve the tensioning effect. The tensioning state is set according to the mechanical and automatic tensioning treatment of the transmission chain 102 on the slag picker. During the process, there is no need for relevant technical personnel to manually adjust the tensioning state of the transmission chain, which reduces the investment in personnel costs and the workload of personnel. The second tensioning gear 404 and the first tensioning gear 206 are both detachable, which is convenient for later disassembly, maintenance, repair or replacement, and improves its durability and stability. The transmission chain of the slag picker is effectively tensioned, and the use effect and operation efficiency of the slag picker are effectively improved.

[0037] Finally, it should be noted that the above embodiments only describe the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0038] In addition, it should be understood that although this specification is described in accordance with the implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. An automatic tensioning device for a transmission chain of a slag scooping machine, characterized in that: The slag scooping frame (1) comprises a transmission gear (101) and a U-shaped frame (2) inside the slag scooping frame (1), a transmission chain (102) is arranged on the transmission gear (101) in meshing, a first tensioning gear (206) is arranged inside the U-shaped frame (2), a mounting frame (3) is arranged on the top of the slag scooping frame (1), a second tensioning gear (404) is arranged inside the mounting frame (3), and the transmission chain (102) links the first tensioning gear (206) and the second tensioning gear (404).

2. The automatic transmission chain tensioning device of a slag scooping machine according to claim 1, characterized in that: The U-shaped frame (2) is provided with a guide hole (201), a guide column (202) is arranged through the guide hole (201), a spring (205) is arranged around the outer wall of the guide column (202), the guide column (202) is connected to a first tensioning seat (204), and a first tensioning gear (206) is arranged on the first tensioning seat (204).

3. The automatic transmission chain tensioning device of a slag scooping machine according to claim 2, characterized in that: The guide column (202) is fixed on the U-shaped frame (2) via a first nut (203).

4. The automatic transmission chain tensioning device of a slag scooping machine according to claim 1, characterized in that: A hydraulic cylinder (301) is installed on the top of the mounting frame (3), and the output end of the hydraulic cylinder (301) is connected to the moving seat (4).

5. The automatic transmission chain tensioning device of a slag scooping machine according to claim 4, characterized in that: A second tensioning seat (401) is installed at the bottom of the movable seat (4), and the second tensioning seat (401) is connected to a second tensioning gear (404).

6. The automatic transmission chain tensioning device of a slag scooping machine according to claim 5, characterized in that: The movable seat (4) is provided with a guide groove (402), the upper part of the second tensioning seat (401) is connected to the guide seat (403), and the guide seat (403) is clamped in the guide groove (402).

7. The automatic transmission chain tensioning device of a slag scooping machine according to claim 6, characterized in that: The movable seat (4) is provided with a first mounting hole (405), the guide groove (402) is provided with a second mounting hole (406), the screw rod (407) passes through the first mounting hole (405) and the second mounting hole (406), and the guide seat (403) and the guide groove (402) are fixed by a second nut (408).

8. The method for using the automatic tensioning device for the transmission chain of a slag dredger according to claims 1 to 7, characterized in that: The transmission chain (102) is meshed with the transmission gear (101), the first tensioning gear (206) and the second tensioning gear (404), the slag scooping frame (1) is started, and the transmission chain (102) is controlled to be tensioned in cooperation with the U-shaped frame (2) and the mounting frame (3).

9. The method for using the automatic tensioning device for the transmission chain of a slag dredger according to claim 8, characterized in that: The tensioning process of the U-shaped frame (2) controlling the transmission chain (102) is as follows: The first tensioning gear (206) is rotatably connected to the first tensioning seat (204), and a spring (205) is sleeved on the outer wall of the guide column (202). According to the elastic reaction force of the spring (205), the spring (205) elastically pushes the first tensioning gear (206) to be tightly engaged with the transmission chain (102).

10. The method for using the automatic tensioning device for the transmission chain of a slag dredger according to claim 8, characterized in that: The mounting frame (3) controls the tensioning process of the transmission chain (102) as follows: The movable seat (4) is fixedly mounted at the output end of the hydraulic cylinder (301); the second tensioning seat (401) is mounted in the guide groove (402) via the guide seat (403); the second tensioning gear (404) is mounted on the second tensioning seat (401); the second tensioning gear (404) is meshed with the transmission chain (102) by adjusting the lifting and lowering of the hydraulic cylinder (301), and the hydraulic cylinder (301) is stretched upward, thereby achieving a pulling and tensioning state of the transmission chain (102).

Citation Information

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