Automatic tensioning device for mining belt conveyor

Abstract

The utility model relates to the field of mining belt conveyors, in particular to an automatic tensioning device of a mining belt conveyor. The automatic tensioning device of the mining belt conveyor comprises a belt conveyor body, a tensioning roller and a cleaning assembly, a supporting plate is fixedly connected into the belt conveyor body, a winch is fixedly connected to the top end of the supporting plate, a gravity sensor is fixedly connected into the belt conveyor body, and a fixed pulley is installed in the belt conveyor body; a tensioning roller sliding in the length direction of the belt conveyor body is installed in the belt conveyor body, one side of the tensioning roller is rotationally connected with a support, and one end of the support is fixedly connected with a steel wire rope. The tension state of the belt is monitored in real time through the gravity sensor, and the intelligent algorithm of the controller is combined, so that the tension degree of the belt can be accurately controlled; no matter the belt conveyor is in a no-load state or a heavy-load state, the optimal tension degree of the belt can be ensured, and the service life of the steel wire rope and the rubber belt is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of mine belt conveyor, especially to a kind of automatic tensioner of mine belt conveyor. BACKGROUND

[0002] In the daily operation of coal mine driving face, with the forward driving of roadway and the periodic maintenance of equipment, the tail end of belt conveyor needs to be frequently extended, and the belt is loosened and tensioned in the process;This link is crucial to ensure the normal operation of belt conveyor;However, in the current operation practice, there are several significant problems in the process of tensioning the belt, which need to be solved urgently;

[0003] On the one hand, the common operation method is to start the belt conveyor while tensioning the belt, and then stop tensioning after the belt conveyor runs normally;The disadvantage of this method is that it usually needs two workers to cooperate, one responsible for operating the tensioner, and the other responsible for starting and monitoring the belt conveyor;This not only increases labor cost, but also may trigger the speed protection mechanism of belt conveyor due to the rapid change of belt tension in the tensioning and starting process, resulting in unexpected shutdown and affecting production efficiency;

[0004] On the other hand, in order to avoid the problems caused by simultaneous operation, some operation sites adopt the strategy of first tensioning the belt and then starting the belt conveyor after tensioning is completed;However, this method also has obvious defects;Firstly, due to the inability to accurately control the tensioning degree of the belt, the belt may not be able to drive normally if it is too loose, while the belt may be damaged due to overwork if it is too tight, which shortens its service life;Secondly, this method requires the operator to go back and forth between the tensioner and the belt conveyor switch many times, which not only wastes time but also increases the operation complexity;More importantly, the friction between the belt and the main drum changes under the conditions of empty load and heavy load, and the existing technology cannot monitor this change in real time, resulting in difficulty in accurately controlling the tensioning degree of the belt, and often causing problems of over-tensioning or over-loosening.

[0005] Therefore, it is necessary to provide a new automatic tensioner of mine belt conveyor to solve the above technical problems. SUMMARY

[0006] To solve the above technical problems, the utility model provides an automatic tensioner of mine belt conveyor.

[0007] The utility model provides a mine belt feeder automatic tensioner includes: belt feeder body, tensioning roller and cleaning component, the inside fixedly connected with support plate of belt feeder body, the top fixedly connected with winch of support plate, the inside fixedly connected with gravity sensor of belt feeder body, the inside installation of belt feeder body has fixed pulley, the inside installation of belt feeder body has tensioning roller who slides along the length direction of belt feeder body, the one end fixedly connected steel wire rope of support connected with tensioning roller side, the steel wire rope passes through fixed pulley and installs with winch cooperation, the one end installation of belt feeder body near tensioning roller has cleaning component, and the cleaning component includes scraper, and one end fixedly connected with scraper of belt feeder body, and the scraper contacts the outside of the belt of belt feeder body.

[0008] Preferably, the cleaning component further comprises a connecting shaft, the inside of the belt feeder body is rotatably connected with the connecting shaft, one end of the connecting shaft is equidistantly fixedly connected with a connecting disc, the top of the connecting disc is rotatably connected with a knocking ball, one end of the connecting shaft extends out of the belt feeder body and is fixedly connected with a first pulley, the driving end inside the belt feeder body is fixedly connected with a driving pulley, and the driving pulley and the first pulley are connected through a belt transmission.

[0009] Preferably, one side of the belt feeder body is rotatably connected with a driving shaft, one end of the driving shaft is fixedly connected with a second pulley, the second pulley and the driving pulley are connected through a belt transmission, one end of the driving shaft is fixedly connected with a square rod, one end of the square rod is slidably connected with a cleaning roller, one end of the cleaning roller away from the square rod is rotatably connected with a driving rod, one end of the driving rod is fixedly connected with a reciprocating screw rod away from the first pulley, and one end of the driving rod is connected with one end of the reciprocating screw rod.

[0010] Preferably, the outer wall of the cleaning roller is fixedly connected with bristles, and the bristles contact the belt of the belt feeder body.

[0011] Preferably, the length of the reciprocating screw rod is less than the distance between the two ends of the cleaning roller and the inner wall of the belt feeder body.

[0012] Preferably, the diameters of the driving pulley, the first pulley and the second pulley are the same.

[0013] Preferably, the top of the support plate is fixedly connected with a controller, and the controller is electrically connected with the gravity sensor and the winch.

[0014] Compared with the related art, the mine belt feeder automatic tensioner has the following beneficial effects:

[0015] Improve work efficiency and safety: through automatic control, the accurate tensioning of the belt is realized, manual frequent operation and adjustment are not needed, and the demand for manpower is significantly reduced. At the same time, the speed protection shutdown problem triggered by improper tensioning is avoided, and the continuity and safety of the production process are ensured.

[0016] Precise control of the tensioning degree: the tensioning state of the belt is monitored in real time by using the gravity sensor, and the intelligent algorithm of the controller can realize precise control of the belt tensioning degree. Whether the belt machine is in an empty load or heavy load state, the belt can maintain the best tensioning degree, effectively prolonging the service life of the steel wire rope and the rubber belt.

[0017] Optimize the cleaning effect of the belt: the integrated cleaning assembly effectively cleans the impurities and ore fines on the surface of the belt through rotation and reciprocating motion, avoiding belt wear and failure caused by impurity accumulation. This function not only improves the running efficiency of the belt machine, but also reduces the production loss caused by downtime cleaning. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure diagram of the inside of the mine belt machine is provided.

[0019] Figure 2 The overall structure diagram is shown. Figure 1

[0020] Figure 3 The structure diagram of another view is shown. Figure 1

[0021] Figure 4 The structure diagram of the cleaning assembly is shown. Figure 1

[0022] Figure 5 The structure diagram of the cleaning roller is shown. Figure 1

[0023] Reference numerals in the drawing: 1, belt machine body; 2, support plate; 3, winch; 4, gravity sensor; 5, fixed pulley; 6, tensioning roller; 7, bracket; 8, steel wire rope; 9, scraper; 10, connecting shaft; 11, connecting disc; 12, knocking ball; 13, first pulley; 14, driving pulley; 15, drive shaft; 16, second pulley; 17, square rod; 18, cleaning roller; 19, driving rod; 20, reciprocating screw rod; 21, controller. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application more clear, the following will further describe the present application in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0025] The specific implementation of the present application will be described in detail in combination with specific examples.

[0026] Please refer to Figures 1-5 ​​​​The utility model provides an automatic tensioner of mine belt conveyor, the automatic tensioner of mine belt conveyor includes: the belt conveyor body 1, tensioning roller 6 and cleaning assembly, the inside fixed connection of belt conveyor body 1 has support plate 2, the top of support plate 2 is fixedly connected with winch 3, the inside fixed connection of belt conveyor body 1 has gravity sensor 4, the inside installation of belt conveyor body 1 has fixed pulley 5, the inside installation of belt conveyor body 1 has the tensioning roller 6 along the length direction of belt conveyor body 1 sliding, one side of tensioning roller 6 is rotatably connected with support 7, one end of support 7 is fixedly connected with steel wire rope 8, and steel wire rope 8 passes through fixed pulley 5 and is installed in cooperation with winch 3 through gravity sensor 4, and the end close to tensioning roller 6 of belt conveyor body 1 is installed with cleaning assembly, and cleaning assembly includes scraper 9, and one end of belt conveyor body 1 is fixedly connected with scraper 9, and scraper 9 contacts the outer side of the belt of belt conveyor body 1, and the top of support plate 2 is fixedly connected with controller 21, and controller 21 is electrically connected with gravity sensor 4 and winch 3 respectively;

[0027] It should be noted that: gravity sensor 4 transmits signal to controller 21, and controller 21 receives signal and sends tensioning signal to winch 3;Winch 3 starts working after receiving the signal, and through the cooperation of steel wire rope 8 and fixed pulley 5, support 7 and tensioning roller 6 are pulled along the length direction of belt conveyor body 1, so that the belt is tensioned.

[0028] Please refer to Figures 3-4 Cleaning assembly further includes connecting shaft 10, connecting shaft 10 is rotatably connected in the inside of belt conveyor body 1, connecting disc 11 is fixedly connected at one end of connecting shaft 10 equidistantly, knocking ball 12 is rotatably connected at the top of connecting disc 11, first pulley 13 is fixedly connected at one end of connecting shaft 10 and extends out of belt conveyor body 1, driving end in the inside of belt conveyor body 1 is fixedly connected with driving pulley 14, and driving pulley 14 is connected with first pulley 13 through belt transmission between first pulley 13;

[0029] It should be noted that: the rotation of driving pulley 14 drives the rotation of first pulley 13 and second pulley 16, and further drives the rotation of connecting shaft 10 and driving shaft 15;The rotation of connecting shaft 10 makes connecting disc 11 and knocking ball 12 rotate constantly, and knocking ball 12 knocks the belt of belt conveyor body 1 under the action of centrifugal force, and the impurities such as ore scraps on the belt are shaken down.

[0030] Please refer to Figures 3-5The side of the belt conveyor body 1 is rotationally connected with a driving shaft 15, one end of the driving shaft 15 is fixedly connected with a second belt pulley 16, the second belt pulley 16 is drivingly connected with the driving belt pulley 14 through a belt, one end of the driving shaft 15 is fixedly connected with a square bar 17, one end of the square bar 17 is slidingly connected with a cleaning roller 18, one end of the cleaning roller 18, away from the square bar 17, is rotationally connected with a driving rod 19, one end of the connecting shaft 10, away from the first belt pulley 13, is fixedly connected with a reciprocating screw rod 20, one end of the driving rod 19 is cooperatively installed with one end of the reciprocating screw rod 20, the outer wall of the cleaning roller 18 is fixedly connected with bristles, and the bristles contact the belt of the belt conveyor body 1, the length of the reciprocating screw rod 20 is less than the distance between the two ends of the cleaning roller 18 and the inner wall of the belt conveyor body 1, and the diameters of the driving belt pulley 14, the first belt pulley 13 and the second belt pulley 16 are the same;

[0031] It should be noted that the connecting shaft 10 also drives the reciprocating screw rod 20 to rotate, and the cooperation between the reciprocating screw rod 20 and the driving rod 19 enables the cleaning roller 18 to reciprocate along the square bar 17 in the axial direction; the rotation of the second belt pulley 16 drives the cleaning roller 18 to rotate through the belt transmission, so that the cleaning roller 18 rotates while reciprocating, thereby more effectively cleaning the impurities on the belt.

[0032] The working principle of the automatic tensioning device of the mine belt conveyor provided by the utility model is as follows:

[0033] Automatic tensioning mechanism:

[0034] When the belt inside the belt conveyor body 1 is loosened due to running or load change, the gravity sensor 4 can monitor the loosened state of the steel wire rope 8;

[0035] The gravity sensor 4 transmits the signal to the controller 21, and after receiving the signal, the controller 21 sends a tensioning signal to the winch 3;

[0036] After receiving the signal, the winch 3 starts to work, and through the cooperation of the steel wire rope 8 and the fixed pulley 5, the support 7 and the tensioning roller 6 are pulled to slide along the length direction of the belt conveyor body 1, so as to tighten the belt;

[0037] Conversely, when the gravity sensor 4 monitors that the steel wire rope 8 is excessively tightened, the controller 21 sends a loosening signal to the winch 3, and the winch 3 works in reverse to loosen the belt to an appropriate degree;

[0038] When the gravity sensor 4 monitors that the tightening degree of the steel wire rope 8 is within the set range, the controller 21 does not send a signal, and the winch 3 remains stationary, and the belt remains in the current tensioning state;

[0039] Belt cleaning mechanism:

[0040] With the running of the belt conveyor body 1, the belt moves continuously;

[0041] The driving end inside the belt conveyor body 1 is fixedly connected with the driving pulley 14, which is connected with the first pulley 13 and the second pulley 16 through belt transmission;

[0042] The rotation of the driving pulley 14 drives the first pulley 13 and the second pulley 16 to rotate, and further drives the connecting shaft 10 and the driving shaft 15 to rotate;

[0043] The rotation of the connecting shaft 10 drives the connecting disc 11 and the knocking ball 12 to rotate continuously, and the knocking ball 12 knocks the belt of the belt conveyor body 1 under the action of centrifugal force, and shakes the impurities on the belt;

[0044] Meanwhile, the connecting shaft 10 also drives the reciprocating screw rod 20 to rotate, and the cooperation of the reciprocating screw rod 20 and the driving rod 19 drives the cleaning roller 18 to move axially along the square rod 17;

[0045] The rotation of the second pulley 16 drives the cleaning roller 18 to rotate through belt transmission, so that the cleaning roller 18 rotates while reciprocating, thereby cleaning the impurities on the belt more effectively;

[0046] The cleaned impurities do not contact the tensioning roller 6, and thus do not affect the rotation and position adjustment of the tensioning roller 6.

[0047] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation according to the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A mine belt conveyor automatic tensioner characterized by, The utility model relates to a belt conveyor, which comprises a belt conveyor body (1), a support plate (2) fixedly connected inside the belt conveyor body (1), a winch (3) fixedly connected to the top end of the support plate (2), a gravity sensor (4) fixedly connected inside the belt conveyor body (1), and a fixed pulley (5) installed inside the belt conveyor body (1). The utility model also comprises a tensioning roller (6) sliding along the length direction of the belt conveyor body (1), a support (7) rotatably connected to one side of the tensioning roller (6), a steel wire rope (8) fixedly connected to one end of the support (7), and the steel wire rope (8) passing through the fixed pulley (5) and being cooperatively installed with the winch (3) through the gravity sensor (4). The utility model also comprises a cleaning assembly installed at one end of the belt conveyor body (1) close to the tensioning roller (6), wherein the cleaning assembly comprises a scraper (9) fixedly connected to one end of the belt conveyor body (1), and the scraper (9) contacts the outer side of the belt of the belt conveyor body (1). The cleaning assembly further comprises a connecting shaft (10) rotatably connected inside the belt conveyor body (1), a connecting disc (11) equidistantly fixedly connected to one end of the connecting shaft (10), a knocking ball (12) rotatably connected to the top end of the connecting disc (11), a first belt pulley (13) fixedly connected to one end of the connecting shaft (10) extending out of the belt conveyor body (1), a driving end fixedly connected to the inside of the belt conveyor body (1) and having a driving belt pulley (14), and the driving belt pulley (14) and the first belt pulley (13) being connected through a belt transmission.

2. The automatic tensioner of a mine belt conveyor according to claim 1, characterized in that, The utility model also comprises a driving shaft (15) rotatably connected to one side of the belt conveyor body (1), a second belt pulley (16) fixedly connected to one end of the driving shaft (15), the second belt pulley (16) and the driving belt pulley (14) being connected through a belt transmission, a square rod (17) fixedly connected to one end of the driving shaft (15) of the belt conveyor body (1), a cleaning roller (18) slidingly connected to one end of the square rod (17), a driving rod (19) rotatably connected to the end of the cleaning roller (18) away from the square rod (17), a reciprocating screw rod (20) fixedly connected to one end of the connecting shaft (10) away from the first belt pulley (13), and one end of the driving rod (19) being cooperatively installed with one end of the reciprocating screw rod (20).

3. The automatic tensioner of a mine belt conveyor according to claim 2, characterized by the fact that, The outer wall of the cleaning roller (18) is fixedly connected with bristles, and the bristles contact the belt of the belt conveyor body (1).

4. The automatic tensioner of a mine belt conveyor according to claim 3, characterized by the fact that, The length of the reciprocating screw rod (20) is less than the distance between the two ends of the cleaning roller (18) and the inner wall of the belt conveyor body (1).

5. The automatic tensioner of a mine belt conveyor according to claim 3, characterized by the fact that, The diameters of the driving belt pulley (14), the first belt pulley (13) and the second belt pulley (16) are the same.

6. The automatic tensioner of a mine belt conveyor according to claim 3, characterized by The top end of the support plate (2) is fixedly connected with a controller (21), and the controller (21) is electrically connected with the gravity sensor (4) and the winch (3).

7. The automatic tensioner of the mining belt conveyor according to claim 1, characterized by the fact that, ​

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