Multi-stage automatic deviation correcting device for coal conveying belt of thermal power plant

Abstract

The invention discloses a thermal power plant coal conveying belt multistage automatic deviation rectifying device which comprises a rack, a plurality of conveying belt carrier roller mechanisms are fixedly connected to the rack, a conveying belt is connected to the conveying belt carrier roller mechanisms in a sleeving mode, the device further comprises a first deviation rectifying mechanism and a second deviation rectifying mechanism, and the first deviation rectifying mechanism comprises a supporting frame, a coal pushing plate and a second U-shaped frame; the lower end of the supporting frame is fixedly connected with the rack, a first U-shaped frame is fixedly connected to one side of the upper end of the supporting frame, the other end of the first U-shaped frame is fixedly connected with the coal pushing plate, a connecting frame is fixedly connected to the first deviation rectifying mechanism, a through hole is formed in the connecting frame, and an extrusion wheel is rotationally installed in a second U-shaped frame through a shaft. A connecting rod is fixedly connected to the second U-shaped frame, the connecting rod is in sliding fit with the through hole, and the connecting rod is sleeved with a return spring. And a second deviation rectifying mechanism. Through mutual cooperation of the first deviation rectifying mechanism and the second deviation rectifying mechanism, deviation of the conveying belt can be automatically rectified in the normal operation process of the coal conveying belt.

Description

Technical Field

[0001] The invention relates to an automatic deviation-correcting device, in particular to a multi-stage automatic deviation-correcting device for a coal conveying belt in a thermal power plant. Background Art

[0002] Belt conveyor is a main continuous transportation equipment, which realizes continuous transportation through friction transmission belt. Belt conveyor has the advantages of large conveying capacity, a wide variety of conveying materials, adaptability to a variety of conveying lines, flexible and changeable conveying distance, smooth and reliable operation, less power loss, high working efficiency, long service life, convenient installation, free loading and unloading, etc. It is widely used in material transmission systems in coal, electricity, building materials, chemical industry, machinery, light industry and other industries. However, during the operation of the belt, the belt often deviates, resulting in a significant reduction in the belt life, so a deviation correction device is needed.

[0003] For example, the Chinese patent publication number CN214933143U discloses an automatic deviation correction device for preventing the coal conveying belt from running off, comprising: a belt conveyor as the bearing base of the device; a conveyor belt, which is sleeved in the belt conveyor and used to transport coal; a side plate, which is fixedly connected to one side of the belt conveyor, and a driving motor is fixedly connected to one side of the side plate, and an active bevel gear is fixedly connected to the output end of the driving motor. The automatic deviation correction device for preventing the coal conveying belt from running off detects whether the conveyor belt is deviated when conveying coal through a contact sensor. If deviated, the driving motor drives the driven bevel gear to rotate, so that the threaded rod pushes the push plate inward to reset the conveyor belt, thereby correcting the deviation. The telescopic rod drives the L-shaped plate to slide back and forth on the side plate, so that the scraper slides back and forth on the surface of the conveyor belt, cleans up the coal slag above, collects the coal through the collection frame, and gathers it on the bottom side of the collection frame, so as to facilitate the collection of the fallen coal. The patent has the following problems:

[0004] First, use a push plate to directly push the output belt to reset. First of all, the conveyor belt is made of rubber and has a certain deformation ability. Strong pushing may cause the edge of the conveyor belt to deform and flip, resulting in reset failure.

[0005] Second, when using the pushing method from both sides, it is necessary to stop the operation of the conveyor belt after discovering that the conveyor belt is offset in order to correct the deviation. This requires suspending the transportation of coal, which affects the normal supply of coal. Summary of the invention

[0006] The object of the present invention is to provide a multi-stage automatic deviation correction device for a coal conveyor belt of a thermal power plant to solve the existing problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a multi-stage automatic deviation correction device for a coal conveyor belt in a thermal power plant, comprising a frame, a plurality of conveyor belt roller mechanisms are fixedly connected to the frame, a conveyor belt is sleeved on the conveyor belt roller mechanism, and further comprising:

[0008] A first deviation-correcting mechanism, the first deviation-correcting mechanism comprises a support frame, a coal pushing plate, and a second U-shaped frame, the lower end of the support frame is fixedly connected to the frame, one side of the upper end of the support frame is fixedly connected to the first U-shaped frame, the other end of the first U-shaped frame is fixedly connected to the coal pushing plate, a connecting frame is fixedly connected to the first deviation-correcting mechanism, a through hole is provided in the connecting frame, an extrusion wheel is rotatably installed in the second U-shaped frame through an axis, a connecting rod is fixedly connected to the second U-shaped frame, the connecting rod is slidably matched with the through hole, and a return spring is sleeved on the connecting rod;

[0009] The second deviation-correcting mechanism comprises a fixed seat and a third U-shaped frame. The fixed seat is fixedly connected to the frame at the bottom. The third U-shaped frame is rotatably connected to the fixed seat through a rotating mechanism. A deviation-correcting roller is rotatably installed in the third U-shaped frame through an axis.

[0010] Preferably, a lower pressing roller is rotatably mounted in the first U-shaped frame via an axis.

[0011] Preferably, a stroke sensor is fixedly connected to the front edge of the connecting frame, and a connecting piece is fixedly connected to the upper end of the stroke sensor.

[0012] Preferably, an anti-dropout limiting cover is fixedly connected to the upper end of the connecting rod, and one of the anti-dropout limiting covers is fixedly connected to the connecting piece.

[0013] Preferably, the bottom of the coal pushing plate is in contact with the top of the conveyor belt, and the coal pushing plate is inclined inwards.

[0014] Preferably, the rotating mechanism comprises a first rotating disk and a second rotating disk, a connecting support plate is fixedly connected to the fixing seat, and the connecting support plate is fixedly connected to the first rotating disk.

[0015] Preferably, the third U-shaped frame is fixedly connected to the second rotating disk at the bottom, and the second rotating disk is rotatably connected to the third U-shaped frame.

[0016] Preferably, an angle adjustment motor is fixedly connected to the lower side of the first rotating disk, and an output end of the angle adjustment motor is fixedly connected to the second rotating disk.

[0017] Preferably, the first deviation-correcting mechanism is provided with two groups, and each group is symmetrically fixed to two sides of the frame.

[0018] Preferably, two second deviation-correcting mechanisms are provided, and each group is symmetrically fixed to two sides of the frame, and the first deviation-correcting mechanism and the second deviation-correcting mechanism of each group are arranged at intervals.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By arranging the first deviation correction mechanism and the second deviation correction mechanism to cooperate with each other, the deviation of the conveyor belt can be automatically corrected during the normal operation of the coal conveyor belt.

[0021] 2. The extrusion wheel is installed in the second U-shaped frame through the rotation of the shaft. After the conveyor belt contacts the extrusion wheel, the extrusion wheel can rotate synchronously with the conveyor belt, so that no friction will be generated. There is no need to stop the normal operation of the coal conveyor belt, and the extrusion wheel can be used to push the conveyor belt to reset.

[0022] 3. Use the travel sensor to detect the degree of deviation of the conveyor belt, and then control the rotation angle of the correction roller according to the degree of deviation of the conveyor belt. When the conveyor belt is gradually reset, the correction roller follows the reset rotation and reduces the deflection angle to avoid the correction roller being in a deflected state after the conveyor belt is reset, and the conveyor belt will deflect to the other side. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the whole of the present invention after being connected with a belt;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 3 It is a schematic structural diagram of the first deviation-correcting mechanism of the present invention;

[0026] Figure 4 It is a schematic structural diagram of the second deviation-correcting mechanism of the present invention;

[0027] Figure 5 For the present invention Figure 1 Enlarged view of point A in the middle.

[0028] In the figure: 1. frame; 101. conveyor belt roller mechanism; 102. conveyor belt; 2. first deviation-correcting mechanism; 201. support frame; 202. first U-shaped frame; 203. lower pressure roller; 204. coal pushing plate; 205. second U-shaped frame; 206. connecting rod; 207. return spring; 208. anti-drop limit cover; 209. extrusion wheel; 210. connecting frame; 211. stroke sensor; 212. connecting piece; 3. second deviation-correcting mechanism; 301. fixed seat; 302. connecting support plate; 303. first rotating disk; 304. angle adjustment motor; 305. second rotating disk; 306. third U-shaped frame; 307. deviation-correcting roller. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 1-5 As shown, the present invention has the following specific embodiments.

[0031] Example 1

[0032] A multi-stage automatic deviation correction device for a coal conveyor belt in a thermal power plant comprises a frame 1, a plurality of conveyor belt roller mechanisms 101 are fixedly connected to the frame 1, a conveyor belt 102 is sleeved on the conveyor belt roller mechanism 101, and further comprises:

[0033] The first deviation-correcting mechanism 2 includes a support frame 201, a coal pushing plate 204, and a second U-shaped frame 205. The lower end of the support frame 201 is fixedly connected to the frame 1, and one side of the upper end of the support frame 201 is fixedly connected to the first U-shaped frame 202, and the other end of the first U-shaped frame 202 is fixedly connected to the coal pushing plate 204. A connecting frame 210 is fixedly connected to the first deviation-correcting mechanism 2, and a through hole is opened in the connecting frame 210. An extrusion wheel 209 is installed in the second U-shaped frame 205 through an axis rotation. A connecting rod 206 is fixedly connected to the second U-shaped frame 205, and the connecting rod 206 is slidably matched with the through hole. A return spring 207 is sleeved on the connecting rod 206;

[0034] The second deflection correcting mechanism 3 comprises a fixed seat 301 and a third U-shaped frame 306. The fixed seat 301 is fixedly connected to the frame 1 at the bottom. The third U-shaped frame 306 is rotatably connected to the fixed seat 301 through a rotating mechanism. A deflection correcting roller 307 is rotatably installed in the third U-shaped frame 306 through an axis.

[0035] In this embodiment, the support frame 201 and the first U-shaped frame 202 support the coal pushing plate 204 above the conveyor belt 102. The coal pushing plate 204 can scrape the coal at the upper edge of the conveyor belt 102, so that the coal transported on the conveyor belt 102 is centered, avoiding the excessive weight and uneven force on the edge of the conveyor belt 102, which leads to continuous deviation. Secondly, the extrusion wheel 209 is against the edge of the conveyor belt 102. After the conveyor belt 102 deviates, it will squeeze the extrusion wheel 209. The second U-shaped frame 205 is slidably inserted into the through hole of the connecting frame 210 by the connecting rod 206, and then the extrusion wheel 209 is forced to drive the second U-shaped frame 205 to move outward and compress the return spring 207. After the return spring 207 is compressed, it will reversely apply a certain thrust to the second U-shaped frame 205, so that the extrusion wheel 209 in the second U-shaped frame 205 always applies a certain thrust to the conveyor belt 102, and the conveyor belt 102 is continuously pressed. During the rotation, the deviation of the conveyor belt 102 is gradually corrected instead of directly resisting the conveyor belt 102 to prevent it from deviating. This can avoid the problem that the edge of the conveyor belt 102 is subjected to excessive force, resulting in the edge flipping and deformation. The third U-shaped frame 306 is connected to the fixed seat 301 by a rotating mechanism, and the correcting roller 307 is attached to the bottom of the conveyor belt 102 and is similar to the conveyor belt roller mechanism 101. During the stage of the conveyor belt 102 rotating operation, the correcting roller 307 will maintain the same horizontal state as the conveyor belt 102 and act as a supporting roller. After the conveyor belt 102 deviates, the rotating mechanism can be used to drive the third U-shaped frame 306 to rotate. The rotation of the third U-shaped frame 306 can drive the correcting roller 307 to rotate, so that the correcting roller 307 is in a deflected state. At this time, the correcting roller 307 is inclined at a certain angle parallel to the side. During the rotation of the conveyor belt 102, the conveyor belt 102 can be guided to deviate inward, so that the conveyor belt 102 is automatically reset.

[0036] Example 2

[0037] like Figure 2 , 3 As shown in , 4, a lower pressure roller 203 is installed in the first U-shaped frame 202 through an axial rotation, a stroke sensor 211 is fixedly connected to the front edge of the connecting frame 210, a connecting piece 212 is fixedly connected to the upper end of the stroke sensor 211, an anti-slip limit cover 208 is fixedly connected to the upper end of the connecting rod 206, one of the anti-slip limit covers 208 is fixedly connected to the connecting piece 212, the lower side of the coal pushing plate 204 is in contact with the upper surface of the conveyor belt 102, and the coal pushing plate 204 is inclined inward.

[0038] In this embodiment, the upper edge of the conveyor belt 102 can be squeezed by the lower pressure roller 203 to prevent the conveyor belt 102 from being forced to fold upward, the anti-slip limit cover 208 is fixed to the upper end of the connecting rod 206 to prevent the connecting rod 206 from moving out of the through hole in the connecting frame 210, and the stroke sensor 211 is connected to the anti-slip limit cover 208 through the connecting piece 212. After the squeezing wheel 209 is squeezed and drives the anti-slip limit cover 208 to move, the stroke sensor 211 can be driven to move through the connecting piece 212, and then the stroke sensor 211 can be The deviation degree of the conveyor belt 102 is monitored in real time, and the stroke sensor 211 generates a signal to the control host. The control host controls the angle adjustment motor 304 to start and drive the third U-shaped frame 306 to rotate. According to the deviation degree of the conveyor belt 102, the rotation angle of the third U-shaped frame 306 is controlled. When the conveyor belt 102 is gradually reset, the third U-shaped frame 306 will also be gradually rotated and reset, so as to avoid the problem that the deviation correction roller 307 is still in a deflected state after the conveyor belt 102 is reset, and the conveyor belt 102 will deflect to the other side.

[0039] Example 3

[0040] like Figure 2 , 4 As shown, the rotating mechanism includes a first rotating disk 303 and a second rotating disk 305. A connecting support plate 302 is fixedly connected to the fixed seat 301, the connecting support plate 302 is fixedly connected to the first rotating disk 303, the third U-shaped frame 306 is fixedly connected to the second rotating disk 305 at the bottom, the second rotating disk 305 is rotatably connected to the third U-shaped frame 306, an angle adjustment motor 304 is fixedly connected to the bottom of the first rotating disk 303, and the output end of the angle adjustment motor 304 is fixedly connected to the second rotating disk 305.

[0041] In this embodiment, the connecting support plate 302 and the third U-shaped frame 306 are rotationally connected together through the rotational cooperation of the first rotating disk 303 and the second rotating disk 305, and the output end of the angle adjustment motor 304 is fixedly connected to the second rotating disk 305. Then, starting the angle adjustment motor 304 can drive the second rotating disk 305 to rotate, and the rotation of the second rotating disk 305 can drive the third U-shaped frame 306 to rotate.

[0042] Example 4

[0043] like Figure 1 , 2 As shown, two groups of first correcting mechanisms 2 are provided, each group is symmetrically fixed on both sides of the frame 1, and two second correcting mechanisms 3 are provided, each group is symmetrically fixed on both sides of the frame 1, and each group of first correcting mechanisms 2 and second correcting mechanisms 3 are arranged at intervals.

[0044] In this embodiment, by symmetrically arranging two first deviation correcting mechanisms 2 and second deviation correcting mechanisms 3 on the frame 1, the two first deviation correcting mechanisms 2 and second deviation correcting mechanisms 3 are a group, and two groups are arranged in the front and back, which effectively prevents the front and rear end belts of the conveyor belt from deviation and corrects the coal conveyor belt in time.

[0045] The working principle and use process of the present invention are as follows: when the belt is deviated, the conveyor belt 102 will first contact the extrusion wheel 209, and the extrusion wheel 209 will be forced to drive the second U-shaped frame 205 to move outward and compress the return spring 207. After the return spring 207 is compressed, it will apply a certain thrust to the second U-shaped frame 205 in the reverse direction. At the same time, the connecting rod 206 will synchronously drive the anti-slip limit cover 208 to move. The movement of the anti-slip limit cover 208 will drive the travel sensor 211 detection rod to extend through the connecting piece 212. The travel sensor 211 can be used to detect whether the conveyor belt 102 The offset, the stroke sensor 211 will generate a signal to the control host, and the control host will control the angle adjustment motor 304 to start. The start of the angle adjustment motor 304 will drive the third U-shaped frame 306 to rotate, and the deviation correction roller 307 in the third U-shaped frame 306 will fit under the conveyor belt 102, and then the deviation correction roller 307 rotates to have a certain angle with the conveyor belt 102, and the conveyor belt 102 will be driven to move inward, and the extrusion wheel 209 will synchronously push the conveyor belt 102 to reset. The cooperation between them can automatically correct the deviation of the conveyor belt 102 during the normal operation of the coal conveyor belt.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage automatic deviation correction device for a coal conveyor belt in a thermal power plant, comprising a frame (1), a plurality of conveyor belt roller mechanisms (101) being fixedly connected to the frame (1), a conveyor belt (102) being sleeved on the conveyor belt roller mechanisms (101), characterized in that: Also includes: A first deviation-correcting mechanism (2), the first deviation-correcting mechanism (2) comprising a support frame (201), a coal pushing plate (204), and a second U-shaped frame (205); the lower end of the support frame (201) is fixedly connected to the frame (1); one side of the upper end of the support frame (201) is fixedly connected to the first U-shaped frame (202); the other end of the first U-shaped frame (202) is fixedly connected to the coal pushing plate (204); a connecting frame (210) is fixedly connected to the first deviation-correcting mechanism (2); a through hole is provided in the connecting frame (210); an extrusion wheel (209) is rotatably installed in the second U-shaped frame (205); a connecting rod (206) is fixedly connected to the second U-shaped frame (205); the connecting rod (206) is slidably matched with the through hole; a return spring (207) is sleeved on the connecting rod (206); A second deflection correcting mechanism (3), the second deflection correcting mechanism (3) comprising a fixed seat (301) and a third U-shaped frame (306), the fixed seat (301) being fixedly connected to the frame (1) at the bottom, the third U-shaped frame (306) being rotatably connected to the fixed seat (301) via a rotating mechanism, and a deflection correcting roller (307) being rotatably installed in the third U-shaped frame (306) via an axis.

2. The multi-stage automatic deviation correction device for coal conveyor belts in thermal power plants according to claim 1 is characterized in that: A lower pressing roller (203) is rotatably mounted in the first U-shaped frame (202).

3. The multi-stage automatic deviation correction device for coal conveyor belts in thermal power plants according to claim 1 is characterized in that: A travel sensor (211) is fixedly connected to the front edge of the connecting frame (210), and a connecting piece (212) is fixedly connected to the upper end of the travel sensor (211).

4. The multi-stage automatic deviation-correcting device for coal conveyor belts in thermal power plants according to claim 3 is characterized in that: An anti-dropout limiting cover (208) is fixedly connected to the upper end of the connecting rod (206), and one of the anti-dropout limiting covers (208) is fixedly connected to a connecting piece (212) on its upper surface.

5. The multi-stage automatic deviation correction device for coal conveyor belts in thermal power plants according to claim 1 is characterized in that: The lower side of the coal pushing plate (204) is in contact with the upper side of the conveyor belt (102), and the coal pushing plate (204) is inclined inwards.

6. The multi-stage automatic deviation correction device for coal conveyor belts in thermal power plants according to claim 1 is characterized by: The rotating mechanism comprises a first rotating disk (303) and a second rotating disk (305); a connecting support plate (302) is fixedly connected to the fixing seat (301); and the connecting support plate (302) is fixedly connected to the first rotating disk (303).

7. The multi-stage automatic deviation-correcting device for coal conveyor belts in thermal power plants according to claim 6, characterized in that: The third U-shaped frame (306) is fixedly connected to the second rotating disk (305) at its lower side, and the second rotating disk (305) is rotatably connected to the third U-shaped frame (306).

8. The multi-stage automatic deviation-correcting device for coal conveyor belts in thermal power plants according to claim 7, characterized in that: An angle adjustment motor (304) is fixedly connected below the first rotating disk (303), and an output end of the angle adjustment motor (304) is fixedly connected to the second rotating disk (305).

9. The multi-stage automatic deviation correction device for coal conveyor belts in thermal power plants according to claim 1, characterized in that: The first deviation-correcting mechanism (2) is provided in two groups, and each group is symmetrically fixed to two sides of the frame (1).

10. The multi-stage automatic deviation correction device for coal conveyor belts in thermal power plants according to claim 1, characterized in that: Two second deviation correcting mechanisms (3) are provided, and each group is symmetrically fixed to two sides of the frame (1), and each group of the first deviation correcting mechanism (2) and the second deviation correcting mechanism (3) are arranged at intervals.

Images