A tensioning device for a power plant boiler slag conveyor

Abstract

The utility model discloses a power station boiler slag conveyor tensioner, including the casing, set up the tensioning assembly at the top of casing, this power station boiler slag conveyor tensioner is driven two -way screw rod rotation through starting second motor, under the guidance of guide rod makes the moving block move, and then with the synergetic effect of linkage link, fixed plate, fixed cylinder, spring, sliding block, connecting rod, connecting plate etc.

Description

Technical Field

[0001] This utility model belongs to the technical field of power plant boiler slag removal machine, specifically relating to a tensioning device for a power plant boiler slag removal machine. Background Technology

[0002] In the operation system of a coal-fired power plant, the ash removal system is an indispensable key link to ensure the stable and efficient operation of the boiler. The boiler ash remover, as the core equipment of the ash removal system, undertakes the important task of discharging the ash and slag produced after boiler combustion from the bottom of the furnace and transporting it to subsequent processing equipment. Its efficiency directly affects the overall production efficiency and operational stability of the power plant. Currently, boiler ash removers commonly use chain drive, relying on the chain to drive the scraper to transport the ash and slag. In this process, chain tension becomes a key factor affecting the operational stability and service life of the equipment. When the chain tension is too loose, slippage and tooth skipping are likely to occur during operation. Slippage leads to unstable scraper movement speed, making it impossible to smoothly transport the ash and slag according to the predetermined rhythm. The conveying efficiency is greatly reduced, making it impossible to complete the slag removal task in a timely and effective manner. This affects the normal slag discharge of the boiler, which may lead to the accumulation of ash and slag inside the boiler, affecting combustion efficiency and even causing safety hazards. Tooth skipping will disrupt the meshing relationship between the chain and sprocket, aggravating the wear of the chain and sprocket and shortening their service life. Conversely, if the chain tension is too tight, it will put excessive load on the chain and drive device. Excessive load will cause the chain to bear tension beyond its design load capacity, accelerating the wear of various chain components, such as chain links and pins, leading to premature chain failure. At the same time, the drive device will also increase the energy consumption of the motor, reduce the service life of the motor, and may even cause motor overheating and damage, greatly shortening the overall service life of the equipment.

[0003] However, most existing slag removal machine tensioning devices employ manual adjustment or simple mechanical automatic adjustment. Manual adjustment requires stopping the machine, meaning the machine stops operating during chain tension adjustment, interrupting continuous operation and reducing production efficiency. Furthermore, manual adjustment relies on human experience; different operators have varying judgments and adjustment levels regarding chain tension, resulting in low precision and difficulty in accurately controlling chain tension, failing to ensure the chain is always in optimal working condition. While simple mechanical automatic adjustment eliminates the need for machine shutdown, it suffers from slow response and a narrow adjustment range. In actual power plant boiler operation, conditions are complex and variable. Factors such as ash and slag production, humidity, and particle size all affect the chain's stress, leading to changes in chain tension. Existing mechanical automatic adjustment devices cannot adjust promptly and effectively in the face of these complex and variable conditions, failing to quickly and accurately change chain tension according to actual conditions, thus failing to meet the demands of efficient and stable operation in modern power plants. Therefore, this invention proposes a tensioning device for a power plant boiler slag removal machine. Utility Model Content

[0004] The purpose of this utility model is to provide a tensioning device for a power plant boiler slag removal machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tensioning device for a power plant boiler slag remover, comprising...

[0006] chassis;

[0007] The slag removal assembly installed inside the casing includes a first motor fixedly installed on the side of the casing, an active roller and a driven roller respectively rotatably installed at both ends inside the casing, an active wheel fixedly installed at the end of the active roller, a driven wheel fixedly installed at the end of the driven roller, a belt sleeved on the active wheel and the driven wheel, a chain installed on the surface of the active roller and the driven roller, and a scraper fixed on the side of the chain, and the output shaft of the first motor is fixedly connected to the active roller;

[0008] The tensioning assembly located on the top of the housing includes a mounting base fixedly mounted on the top of the housing, a fixed body fixedly mounted on the top of the mounting base, a second motor fixedly mounted on the side of the fixed body, a bidirectional threaded rod rotatably mounted inside the fixed body, two moving blocks threaded onto the two end surfaces of the bidirectional threaded rod, a linkage rod hinged to the bottom of the moving blocks, a fixed plate hinged to the bottom of the two linkage rods, a fixed cylinder fixed to the bottom of the fixed plate, a connecting rod movably mounted on the bottom of the fixed cylinder with its bottom end extending to the bottom of the mounting base, a connecting plate fixedly mounted on the bottom of the connecting rod, and two semicircular blocks corresponding to the chain fixedly mounted on the bottom of the connecting plate. The output end of the second motor is connected to the bidirectional threaded rod.

[0009] Preferably, the tensioning assembly further includes a guide rod fixedly installed inside the fixed body and located at the bottom of the bidirectional threaded rod, the guide rod passing through the surfaces of the two moving blocks.

[0010] Preferably, a slider is movably installed inside the fixed cylinder, and a spring is also installed inside the fixed cylinder above the slider. The top end of the connecting rod passes through the fixed cylinder and is fixedly connected to the slider.

[0011] Preferably, one end of the spring abuts against the fixed cylinder, and the other end of the spring abuts against the slider.

[0012] Preferably, a circular hole is provided at the center of the top surface of the mounting base for the connecting rod to pass through.

[0013] Preferably, the housing is U-shaped with the opening facing upwards, and both ends of the mounting base are fixed to the top surface of the housing.

[0014] Preferably, a sprocket for chain mounting is fixed to both ends of the driving roller and the driven roller.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The tensioning device of the boiler slag remover in this power plant drives the bidirectional threaded rod to rotate by starting the second motor. Under the guidance of the guide rod, the moving block moves. Then, with the help of the coordinated action of a series of components such as the linkage rod, fixed plate, fixed cylinder, spring, slider, connecting rod, and connecting plate, the semi-circular block moves downward to apply pressure to the chain, thereby achieving effective adjustment of the chain tension. This adjustment method not only avoids the production interruption caused by manual adjustment requiring machine stoppage, thus improving production efficiency, but also overcomes the shortcomings of manual adjustment, which relies on human experience and has low adjustment accuracy. It can accurately control the chain tension. At the same time, compared with the existing simple mechanical automatic adjustment method, this device has a faster response speed and a wider adjustment range, and can adjust the chain tension in a timely and effective manner under complex and changing working conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the first motor, the drive roller, and the drive wheel of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the fixing body, the second motor, and the bidirectional threaded rod of this utility model.

[0019] Figure 4 This is a schematic diagram of the connecting rod, connecting plate, and semi-circular block of this utility model;

[0020] In the diagram: 1. Casing; 2. Slag removal assembly; 201. First motor; 202. Driven roller; 203. Driven wheel; 204. Belt; 205. Driven roller; 206. Driven wheel; 207. Chain; 208. Scraper; 3. Tensioning assembly; 301. Mounting base; 302. Fixing body; 303. Second motor; 304. Bidirectional threaded rod; 305. Guide rod; 306. Moving block; 307. Linkage rod; 308. Fixing plate; 309. Fixing cylinder; 310. Spring; 311. Slider; 312. Connecting rod; 313. Connecting plate; 314. Semicircular block. Detailed Implementation

[0021] 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.

[0022] Example

[0023] Please see Figures 1 to 4 This is an embodiment of the present utility model, which provides the following technical solution: a tensioning device for a power plant boiler slag remover, comprising...

[0024] Casing 1;

[0025] The slag removal assembly 2, located inside the housing 1, includes a first motor 201 fixedly mounted on the side of the housing 1, a drive roller 202 and a driven roller 205 respectively rotatably mounted at both ends inside the housing 1, a drive wheel 203 fixedly mounted at the end of the drive roller 202, a driven wheel 206 fixedly mounted at the end of the driven roller 205, a belt 204 sleeved on the drive wheel 203 and the driven wheel 206, a chain 207 mounted on the surfaces of the drive roller 202 and the driven roller 205, and a fixing... The scraper 208 is located on the side of the chain 207, and the output shaft of the first motor 201 is fixedly connected to the drive roller 202. The drive wheel 203, belt 204, and driven wheel 206 are connected for transmission. When the first motor 201 is started, the drive roller 202 can be driven to rotate. Under the action of the drive wheel 203, belt 204, and driven wheel 206, the driven roller 205 can be rotated, thereby causing the chain 207 to drive the scraper 208 to operate, which can normally scrape off the residue generated by the power plant boiler.

[0026] The tensioning assembly 3, located on the top of the housing 1, includes a mounting base 301 fixedly mounted on the top of the housing 1, a fixing body 302 fixedly mounted on the top of the mounting base 301, a second motor 303 fixedly mounted on the side of the fixing body 302, a bidirectional threaded rod 304 rotatably mounted inside the fixing body 302, two moving blocks 306 threadedly mounted to the two end surfaces of the bidirectional threaded rod 304, a linkage rod 307 hinged to the bottom of the moving blocks 306, a fixing plate 308 hinged to the bottom of the two linkage rods 307, a fixing cylinder 309 fixed to the bottom of the fixing plate 308, and a movably mounted on the bottom of the fixing cylinder 309. A connecting rod 312 extends through the bottom of the mounting base 301, a connecting plate 313 is fixedly installed at the bottom of the connecting rod 312, and two semicircular blocks 314 corresponding to the chain 207 are fixedly installed at the bottom of the connecting plate 313. The output end of the second motor 303 is connected to the bidirectional threaded rod 304. When the second motor 303 is started, it can drive the bidirectional threaded rod 304 to rotate, thereby driving the moving block 306 to move laterally, causing the fixed plate 308 to move up and down. Through the fixed cylinder 309 and the connecting rod 312, the connecting plate 313 moves up and down, so that the semicircular blocks 314 can apply pressure to the chain 207 for tension adjustment.

[0027] In this embodiment, preferably, the tensioning assembly 3 further includes a guide rod 305 fixedly installed inside the fixing body 302 and located at the bottom of the bidirectional threaded rod 304. The guide rod 305 passes through the surfaces of the two moving blocks 306, which is equivalent to the moving blocks 306 being slidably installed on the guide rod 305. The guide rod 305 can play a guiding and supporting role during the subsequent lateral movement of the moving blocks 306.

[0028] In this embodiment, preferably, a slider 311 is movably installed inside the fixed cylinder 309, and a spring 310 is also installed inside the fixed cylinder 309 above the slider 311. The top end of the connecting rod 312 passes through the fixed cylinder 309 and is fixedly connected to the slider 311. The design of the spring 310 and the slider 311 allows the semicircular block 314 to adapt to the tension of the chain 207 within a certain range.

[0029] In this embodiment, preferably, one end of the spring 310 abuts against the fixed cylinder 309, and the other end of the spring 310 abuts against the slider 311. The spring 310 is provided to reset the slider 311 after it moves.

[0030] In this embodiment, preferably, a circular hole is provided at the center of the top surface of the mounting base 301 for the connecting rod 312 to pass through.

[0031] In this embodiment, preferably, the housing 1 is U-shaped with the opening facing upwards, and both ends of the mounting base 301 are fixed to the top surface of the housing 1.

[0032] In this embodiment, preferably, a sprocket for mounting the chain 207 is fixed to both ends of the driving roller 202 and the driven roller 205.

[0033] In summary, when this device is in use, the first motor 201 is started to drive the drive roller 202 to rotate. Under the action of the drive wheel 203, belt 204, and driven wheel 206, the driven roller 205 can rotate, thereby driving the chain 207 and scraper 208 to move, so as to scrape off the residue generated by the power plant boiler normally. Then, the second motor 303 is started to drive the bidirectional threaded rod 304 to rotate. Under the guidance of the guide rod 305, the moving block 306 can move. Under the action of the linkage rod 307, fixed plate 308, fixed cylinder 309, spring 310, slider 311, connecting rod 312, and connecting plate 313, the semi-circular block 314 can move downward to apply pressure to the chain 207, so as to adjust the tension of the chain 207. The spring 310 can adapt to the tension of the chain 207 within a certain range.

[0034] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensioning device for a power plant boiler slag remover, characterized in that: include Casing (1); The slag removal assembly (2) installed inside the housing (1) includes a first motor (201) fixedly installed on the side of the housing (1), an active roller (202) and a driven roller (205) respectively rotatably installed at both ends inside the housing (1), an active wheel (203) fixedly installed at the end of the active roller (202), a driven wheel (206) fixedly installed at the end of the driven roller (205), a belt (204) sleeved on the active wheel (203) and the driven wheel (206), a chain (207) installed on the surface of the active roller (202) and the driven roller (205), and a scraper (208) fixed on the side of the chain (207). The output shaft of the first motor (201) is fixedly connected to the active roller (202). The tensioning assembly (3) located on the top of the housing (1) includes a mounting base (301) fixedly mounted on the top of the housing (1), a fixing body (302) fixedly mounted on the top of the mounting base (301), a second motor (303) fixedly mounted on the side of the fixing body (302), a bidirectional threaded rod (304) rotatably mounted inside the fixing body (302), two moving blocks (306) threadedly mounted on the two ends of the bidirectional threaded rod (304), a linkage rod (307) hinged to the bottom of the moving blocks (306), and a linkage with... The two linkage rods (307) have a fixed plate (308) at the bottom, a fixed cylinder (309) fixed at the bottom of the fixed plate (308), a connecting rod (312) movably installed at the bottom of the fixed cylinder (309) and extending through to the bottom of the mounting base (301), a connecting plate (313) fixedly installed at the bottom of the connecting rod (312), and two semicircular blocks (314) fixedly installed at the bottom of the connecting plate (313) corresponding to the chain (207). The output end of the second motor (303) is connected to the bidirectional threaded rod (304).

2. The tensioning device for a power plant boiler slag remover according to claim 1, characterized in that: The tensioning assembly (3) also includes a guide rod (305) fixedly installed inside the fixing body (302) and located at the bottom of the bidirectional threaded rod (304), the guide rod (305) passing through the surfaces of the two moving blocks (306).

3. The tensioning device for a power plant boiler slag remover according to claim 1, characterized in that: The fixed cylinder (309) is movably equipped with a slider (311), and a spring (310) is also installed inside the fixed cylinder (309) above the slider (311). The top end of the connecting rod (312) passes through the fixed cylinder (309) and is fixedly connected to the slider (311).

4. The tensioning device for a power plant boiler slag remover according to claim 3, characterized in that: One end of the spring (310) abuts against the fixed cylinder (309), and the other end of the spring (310) abuts against the slider (311).

5. The tensioning device for a power plant boiler slag remover according to claim 1, characterized in that: The mounting base (301) has a circular hole through which the connecting rod (312) passes at the center of its top surface.

6. The tensioning device for a power plant boiler slag remover according to claim 1, characterized in that: The housing (1) is U-shaped with the opening facing upwards, and both ends of the mounting base (301) are fixed to the top surface of the housing (1).

7. The tensioning device for a power plant boiler slag remover according to claim 1, characterized in that: Both ends of the driving roller (202) and the driven roller (205) are fixed with a sprocket for mounting the chain (207).

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