Phosphorite belt conveying and tensioning mechanism

Abstract

The utility model discloses a phosphorite belt conveying tensioning mechanism which comprises a machine shell, a baffle is arranged on one side of the machine shell, a belt is arranged between the machine shell and the baffle, an automatic tensioning mechanism is arranged on the belt, the automatic tensioning mechanism comprises two supporting frames, a plurality of pressing wheels are arranged on the two supporting frames on the belt, and the pressing wheels are arranged on the two supporting frames. A two-way lead screw is rotationally installed between the machine shell and the baffle, moving blocks are arranged at the two ends of the two-way lead screw, two transmission rods are arranged between the two moving blocks and the two supporting frames respectively, a second motor is fixedly installed on one side of the machine shell, and the output end of the second motor is fixedly connected with the two-way lead screw; the two supporting frames are each provided with a distance sensor, and a signal receiver matched with the two distance sensors is fixedly installed on the second motor. According to the automatic tensioning device, the tensioning force of the belt can be automatically adjusted through the automatic tensioning mechanism, and the situation that the service life of the belt is affected due to the fact that the belt is loose or too tight is reduced.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of phosphate ore belt conveyors, in particular to a phosphate ore belt conveying tensioning mechanism. Background Art

[0002] Phosphate rock is an important mineral resource with a wide range of applications in agriculture and industry. As global demand for phosphorus resources continues to grow, the rational development and utilization of phosphate rock resources is particularly important. In the mining and processing of phosphate rock, belt conveyors are required for transportation.

[0003] The existing phosphate ore belt conveyor tensioning mechanism requires manual adjustment when adjusting the belt tension. Due to the limitations of manual operation, the belt tension cannot be adjusted frequently, and the belt tension may continue to change with changes in time, temperature, load and other factors. Manual adjustment is difficult to keep up with these changes in time, resulting in the belt being in an inappropriate tension state for a long time. Manual adjustment mainly relies on the operator's experience and subjective judgment to determine the degree of belt tension, which is prone to errors, resulting in excessive or insufficient belt tension. When the tension is too high, it will increase the wear and fatigue of the belt and shorten the service life of the belt. When the tension is too low, the belt is prone to slipping, resulting in increased wear on the belt surface, which will also affect the life of the belt. Utility Model Content

[0004] The utility model aims to solve the problem that the existing phosphate ore belt conveyor tensioning mechanism is manually adjusted, which easily causes the belt tension to be too large or too small, thereby causing damage to the belt.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A phosphate ore belt conveyor tensioning mechanism comprises a casing, a baffle is provided on one side of the casing, a belt is provided between the casing and the baffle, slide grooves are provided on both sides of the inner wall of the casing, an automatic tensioning mechanism is provided on the belt, the automatic tensioning mechanism comprises two support frames slidably installed in the two slide grooves respectively, the two support frames are provided with a number of pressure wheels on the belt, a bidirectional screw rod is rotatably installed between the casing and the baffle, moving blocks are provided at both ends of the bidirectional screw rod, two transmission rods are respectively provided between the two moving blocks and the two support frames, a second motor is fixedly installed on one side of the casing, the output end of the second motor passes through the bidirectional screw rod and is fixedly connected to the bidirectional screw rod, distance sensors are provided on the two support frames, and a signal receiver cooperating with the two distance sensors is fixedly installed on the second motor.

[0007] As a further description of the above technical solution, the lower ends of several pressure wheels are attached to the surface of the belt and are rotatably connected to the belt. The support frame is fixedly connected to a fixed plate below the belt, and the distance sensor is fixedly mounted on the fixed plate.

[0008] As a further description of the above technical solution, the thread grooves at both ends of the bidirectional screw are set in opposite directions, the moving block is arranged in string on the bidirectional screw and is threadedly connected to the bidirectional screw, two fixed blocks are fixedly installed on the moving block, and the support frame is provided with a long groove at the lower end of the fixed plate, and the two ends of the transmission rod are respectively installed between the two fixed blocks and in the long groove.

[0009] As a further description of the above technical solution, two wheels are rotatably installed between the casing and the baffle, and belts are provided on the two wheels. A first motor is fixedly installed on one side of the casing, and the output end of the first motor passes through the casing and is fixedly connected to one of the wheels.

[0010] As a further description of the above technical solution, a receiving groove is opened on one side of the casing, a U-shaped connecting rod is slidably installed in the receiving groove, a fixing rod is fixedly connected to the side of the baffle close to the receiving groove, and the fixing rod is rotatably installed in the U-shaped connecting rod on the side away from the baffle, and a limiting mechanism is provided between the two ends of the U-shaped connecting rod and the casing.

[0011] As a further description of the above technical solution, the limiting mechanism includes two symmetrically arranged blocks, and circular grooves are provided on the upper and lower sides of the U-shaped connecting rod. The two blocks are slidably installed in the two circular grooves respectively, and springs are fixedly installed between the two blocks and the inner walls of the two circular grooves. Card holes that cooperate with the two blocks are provided on both sides of the inner wall of the accommodating groove close to one end of the baffle, and the side of the two blocks away from the baffle is set as a slope.

[0012] As a further description of the above technical solution, two threaded holes are opened on the side of the casing away from the accommodating groove, and threaded rods are threadedly installed in the two threaded holes. The ends of the two threaded rods away from the two threaded holes respectively pass through the baffle and are threadedly connected to the baffle, and the ends of the two threaded rods passing through the baffle are fixedly connected with knobs.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] In the utility model, due to the adoption of an automatic tensioning mechanism, when the belt becomes slack, the middle part of the belt falls close to the two distance sensors, and the two distance sensors transmit an on signal to the signal receiver, so that the second motor starts automatically, and then drives the bidirectional screw rod to rotate, so that the two moving blocks approach each other, and the two transmission rods respectively pull the two support frames to slide downward in the two slide grooves, driving a number of pressure wheels to move downward and fit the inner wall surface of the belt, thereby tensioning the belt, so that the lower surface of the belt is away from the two distance sensors, and then the two distance sensors transmit a closing signal to the signal receiver, so that the belt can be automatically tensioned, avoiding manual adjustment to cause excessive or insufficient belt tension, which affects the life of the belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure inside the casing of the utility model;

[0017] Figure 3 This is an exploded view of the structure of the connection between the housing and the baffle of the utility model;

[0018] Figure 4 This is a cross-sectional view of the structure of the connection between the housing and the baffle of the utility model;

[0019] Figure 5 for Figure 2 A magnified view of the structure at center A;

[0020] Figure 6 for Figure 4 A magnified view of the structure at B in the middle.

[0021] Reference numerals: 10, housing; 101, slide groove; 102, receiving groove; 103, clamping hole; 104, threaded hole; 11, baffle; 111, fixing rod; 12, U-shaped connecting rod; 121, circular groove; 13, clamping block; 14, spring; 15, threaded rod; 16, rotating wheel; 17, belt; 18, first motor; 19, knob;

[0022] 20. Support frame; 201. Long slot; 21. Pressure wheel; 22. Fixed plate; 23. Distance sensor; 24. Transmission rod; 25. Fixed block; 26. Moving block; 27. Bidirectional screw; 28. Second motor; 29. ​​Signal receiver. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0024] Please refer to the attached Figures 1-6 As shown, the utility model provides a technical solution: a phosphate ore belt conveyor tensioning mechanism, comprising a casing 10, a baffle 11 is provided on one side of the casing 10, a belt 17 is provided between the casing 10 and the baffle 11, slide grooves 101 are provided on both sides of the inner wall of the casing 10, and an automatic tensioning mechanism is provided on the belt 17, the automatic tensioning mechanism comprises two support frames 20 respectively slidably mounted in the two slide grooves 101, the two support frames 20 are provided with a number of pressure wheels 21 on the belt 17, a bidirectional screw rod 27 is rotatably installed between the casing 10 and the baffle 11, a moving block 26 is provided at both ends of the bidirectional screw rod 27, two transmission rods 24 are respectively provided between the two moving blocks 26 and the two support frames 20, a second motor 28 is fixedly installed on one side of the casing 10, the output end of the second motor 28 passes through the bidirectional screw rod 27 and is fixedly connected to the bidirectional screw rod 27, a distance sensor 23 is provided on the two support frames 20, and a signal receiver 29 cooperating with the two distance sensors 23 is fixedly mounted on the second motor 28.

[0025] Specifically, when the belt 17 becomes loose, the middle part of the belt 17 will move away from the lower surface of the several pressure wheels 21, and then fall close to the two distance sensors 23. The two distance sensors 23 transmit an open signal to the signal receiver 29, so that the second motor 28 starts automatically, and then drives the bidirectional screw rod 27 to rotate, so that the two moving blocks 26 approach each other, and then through the two transmission rods 24, the two support frames 20 are pulled to slide downward in the two slide grooves 101, driving the several pressure wheels 21 to move downward and fit the inner wall surface of the belt 17, squeezing the belt 17, and tightening the belt 17, so that the lower surface of the belt 17 is away from the two distance sensors 23, and then the two distance sensors 23 transmit a close signal to the signal receiver 29, so that the belt 17 can be automatically tensioned to prevent the belt 17 from having too much or too little tension and causing damage to the belt 17. The distance sensor 23 is an ultrasonic distance sensor, model HC-SR04.

[0026] In one embodiment of the present invention, Figure 1 、 Figure 2 and Figure 5As shown, the lower ends of several pressure wheels 21 are in contact with the surface of the belt 17 and are rotatably connected to the belt 17. The support frame 20 is fixedly connected to a fixed plate 22 at a position below the belt 17. The distance sensor 23 is fixedly installed on the fixed plate 22. Under normal circumstances, the lower surface of the pressure wheel 21 is in contact with the belt 17, and there is a certain distance between the distance sensor 23 on the fixed plate 22 and the lower surface of the belt 17. When the belt 17 is relaxed, the lower surface of the belt 17 will be close to the surface of the distance sensor 23, causing the distance between the distance sensor 23 and the belt 17 to change, and then the distance sensor 23 transmits a signal to the signal receiver 29 to automatically tighten the belt 17.

[0027] In one embodiment of the present invention, Figure 2 and Figure 5 As shown, the thread grooves at both ends of the bidirectional screw rod 27 are set in opposite directions, the moving block 26 is arranged in series on the bidirectional screw rod 27 and is threadedly connected to the bidirectional screw rod 27, and two fixed blocks 25 are fixedly installed on the moving block 26. The support frame 20 is provided with an elongated groove 201 at the lower end of the fixed plate 22, and the two ends of the transmission rod 24 are respectively installed between the two fixed blocks 25 and in the elongated groove 201. When the two moving blocks 26 approach each other, the two transmission rods 24 are close to one end of the two moving blocks 26 and approach each other. Since the lengths of the two transmission rods 24 are fixed, the two transmission rods 24 are close to one end of the two support frames 20, which will pull the two support frames 20 to slide down in the two slide grooves 101 respectively.

[0028] In one embodiment of the present invention, Figure 1 and Figure 3 As shown, two wheels 16 are rotatably installed between the casing 10 and the baffle 11, and a belt 17 is provided on the two wheels 16. A first motor 18 is fixedly installed on one side of the casing 10. The output end of the first motor 18 passes through the casing 10 and is fixedly connected to one of the wheels 16. The first motor 18 drives one of the wheels 16 to rotate, thereby driving the belt 17 to rotate, so that the belt 17 can transport the phosphate rock.

[0029] In one embodiment of the present invention, Figure 3 、 Figure 4 and Figure 6As shown, a receiving groove 102 is opened on one side of the casing 10, and a U-shaped connecting rod 12 is slidably installed in the receiving groove 102. A fixing rod 111 is fixedly connected to the side of the baffle 11 close to the receiving groove 102, and the fixing rod 111 is rotatably installed in the U-shaped connecting rod 12 on the side away from the baffle 11. A limiting mechanism is provided between the two ends of the U-shaped connecting rod 12 and the casing 10. When the U-shaped connecting rod 12 is moved so that the U-shaped connecting rod 12 moves in the receiving groove 102 and the connection between the U-shaped connecting rod 12 and the fixing rod 111 extends out of the receiving groove 102, the baffle 11 can be flipped so that the casing 10 is opened, thereby facilitating the replacement of the damaged belt 17.

[0030] In one embodiment of the present invention, Figure 4 and Figure 6 As shown, the limiting mechanism includes two symmetrically arranged blocks 13, and circular grooves 121 are provided on the upper and lower sides of the U-shaped connecting rod 12. The two blocks 13 are respectively slidably installed in the two circular grooves 121, and springs 14 are fixedly installed between the two blocks 13 and the inner walls of the two circular grooves 121. Both sides of the inner wall of the accommodating groove 102 close to one end of the baffle 11 are provided with card holes 103 that match the two blocks 13. The side of the two blocks 13 away from the baffle 11 is set as an inclined surface, which is convenient for shrinking the two blocks 13 into the two circular grooves 121 respectively.

[0031] Specifically, when the U-shaped connecting rod 12 continues to move in the accommodating groove 102 and the two circular grooves 121 coincide with the two clamping holes 103, under the elastic force of the two springs 14, the two clamping blocks 13 slide and engage in the two clamping holes 103 respectively, fixing the position of the U-shaped connecting rod 12 and preventing the U-shaped connecting rod 12 from escaping from the accommodating groove 102 when moving.

[0032] In one embodiment of the present invention, Figure 2 and Figure 3 As shown, two threaded holes 104 are provided on the side of the casing 10 away from the accommodating groove 102, and threaded rods 15 are threadedly installed in the two threaded holes 104. The ends of the two threaded rods 15 away from the two threaded holes 104 respectively pass through the baffle 11 and are threadedly connected to the baffle 11. The ends of the two threaded rods 15 passing through the baffle 11 are fixedly connected with knobs 19. By rotating the two knobs 19 respectively, the two threaded rods 15 are respectively rotated on the two threaded holes 104 and the baffle 11, so that the two threaded rods 15 are respectively disengaged from the two threaded holes 104, thereby facilitating the release of the lock between the baffle 11 and the casing 10.

[0033] The above description of the present invention is illustrative in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A phosphate ore belt conveyor tensioning mechanism, comprising a housing (10), a baffle (11) provided on one side of the housing (10), and a belt (17) provided between the housing (10) and the baffle (11), characterized in that: Slide grooves (101) are provided on both sides of the inner wall of the casing (10), and an automatic tensioning mechanism is provided on the belt (17), and the automatic tensioning mechanism includes two support frames (20) respectively slidably installed in the two slide grooves (101), and the two support frames (20) are provided with a plurality of pressure wheels (21) on the belt (17). A bidirectional screw rod (27) is rotatably installed between the casing (10) and the baffle (11), and a moving block (26) is provided at both ends of the bidirectional screw rod (27). Two transmission rods (24) are respectively provided between the two moving blocks (26) and the two support frames (20). A second motor (28) is fixedly installed on one side of the casing (10), and the output end of the second motor (28) passes through the bidirectional screw rod (27) and is fixedly connected to the bidirectional screw rod (27). A distance sensor (23) is provided on the two support frames (20), and a signal receiver (29) matched with the two distance sensors (23) is fixedly installed on the second motor (28).

2. A phosphate rock belt conveyor tensioning mechanism according to claim 1, characterized in that: The lower ends of the plurality of pressure wheels (21) are attached to the surface of the belt (17) and are rotatably connected to the belt (17); the support frame (20) is fixedly connected to a fixing plate (22) below the belt (17); and the distance sensor (23) is fixedly mounted on the fixing plate (22).

3. The phosphate rock belt conveyor tensioning mechanism according to claim 1, characterized in that: The thread grooves at both ends of the bidirectional screw (27) are arranged in opposite directions. The moving block (26) is arranged in series on the bidirectional screw (27) and is threadedly connected to the bidirectional screw (27). Two fixed blocks (25) are fixedly installed on the moving block (26). The support frame (20) is provided with an elongated groove (201) at the lower end of the fixed plate (22). The two ends of the transmission rod (24) are respectively installed between the two fixed blocks (25) and in the elongated groove (201).

4. The phosphate rock belt conveyor tensioning mechanism according to claim 1, characterized in that: Two rotating wheels (16) are rotatably mounted between the housing (10) and the baffle (11), and a belt (17) is sleeved on the two rotating wheels (16). A first motor (18) is fixedly mounted on one side of the housing (10), and an output end of the first motor (18) passes through the housing (10) and is fixedly connected to one of the rotating wheels (16).

5. The phosphate rock belt conveyor tensioning mechanism according to claim 1, characterized in that: A receiving groove (102) is provided on one side of the housing (10), a U-shaped connecting rod (12) is slidably installed in the receiving groove (102), a fixing rod (111) is fixedly connected to the side of the baffle (11) close to the receiving groove (102), and the fixing rod (111) is rotatably installed in the U-shaped connecting rod (12) on the side away from the baffle (11), and a limiting mechanism is provided between the two ends of the U-shaped connecting rod (12) and the housing (10).

6. A phosphate rock belt conveyor tensioning mechanism according to claim 5, characterized in that: The limiting mechanism comprises two symmetrically arranged clamping blocks (13), circular grooves (121) are provided on the upper and lower sides of the U-shaped connecting rod (12), the two clamping blocks (13) are respectively slidably installed in the two circular grooves (121), springs (14) are fixedly installed between the two clamping blocks (13) and the inner walls of the two circular grooves (121), clamping holes (103) matching with the two clamping blocks (13) are provided on both sides of the inner wall of the accommodating groove (102) close to one end of the baffle (11), and the sides of the two clamping blocks (13) away from the baffle (11) are arranged as inclined surfaces.

7. The phosphate rock belt conveyor tensioning mechanism according to claim 5, characterized in that: Two threaded holes (104) are provided on a side of the housing (100) away from the receiving groove (102), and threaded rods (15) are threadedly installed in the two threaded holes (104). One end of the two threaded rods (15) away from the two threaded holes (104) respectively passes through the baffle (11) and is threadedly connected to the baffle (11), and one end of the two threaded rods (15) passing through the baffle (11) is fixedly connected to a knob (19).

Images