Combined belt conveyor

Abstract

The utility model discloses a combined belt conveyor. The combined belt conveyor comprises a belt and a rack, the turnabout drum is rotationally arranged at the end part of the rack; the movable cam is movably arranged in the middle of the turnabout drum, the first end of the movable cam abuts against the inner wall of the belt, a lower pressing roller is rotationally arranged at the second end opposite to the movable cam, and when the belt reversely slides relative to the turnabout drum, the movable cam deflects so that the lower pressing roller can abut against the belt till the belt is tensioned; the movable cam is provided with a vertical station used for abutting against the belt. According to the combined belt conveyor, through the design of the movable cam, when the belt slips, the belt slips reversely relative to the turnabout drum, the movable cam is made to deflect, the belt is tensioned and straightened through the lower pressing roller, and therefore the slipping phenomenon of the belt is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of belt transportation, and particularly relates to a combined belt conveyor. Background Art

[0002] Belt conveyors are widely used in industries such as mines, construction, and ports for transporting various bulk materials, such as coal, ore, sand and gravel, etc. It has the advantages of simple structure, stable operation, and convenient maintenance.

[0003] Combined with the publication number CN209427623U, the publication date September 24, 2019, a combined telescopic belt conveyor is disclosed.

[0004] In the prior art including the above patent, it includes a mounting base, and an independent electric control cabinet for the telescopic machine, a belt motor, a telescopic motor, and an oil pump motor are provided inside the mounting base. The independent electric control cabinet for the telescopic machine is electrically connected to the belt motor, the telescopic motor, and the oil pump motor respectively. An installation frame, a hydraulic station, and an electric control box are further provided on the independent electric control cabinet for the telescopic machine. The hydraulic station and the electric control box are arranged on one side of the installation frame and the electric control box is located above the hydraulic station. A swing arm belt unit and a pulley group are further provided on the installation frame. Through the arrangement of the swing arm belt unit and the pulley group, the above technology can meet the use requirements of the lengthened vehicle as much as possible without increasing the floor area of the equipment. However, due to the long-term stretching of the belt by the telescopic motor, the problem of slack will occur, and slipping will occur between the belt and the deflecting roller, affecting the use of the belt conveyor. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a combined belt conveyor to solve the above problems.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a combined belt conveyor, including a belt and a frame;

[0007] A deflecting roller rotatably arranged at the end of the frame;

[0008] A movable cam movably arranged in the middle of the deflecting roller, its first end abuts against the inner wall of the belt, and a pressing roller is rotatably arranged at the second end opposite thereto. When the belt slides reversely relative to the deflecting roller, the movable cam deflects to make the pressing roller press against the belt until the belt is tensioned;

[0009] The movable cam has a vertical working position for pressing against the belt.

[0010] Preferably, the movable cam is kept inclined by the frictional force of the belt, and a ratchet wheel that forms a one-way rotational fit with the movable cam is rotatably arranged at the first end of the movable cam, and a pawl that engages with the ratchet wheel is arranged on the movable cam.

[0011] Preferably, a gear ring is fixedly arranged in the middle of the inner wall of the belt, and a plurality of external teeth meshing with the gear ring are arranged in a circumferential array on the ratchet wheel.

[0012] Preferably, it further includes a deviation correction roller arranged on the frame and driven to deflect to correct the deviation of the belt.

[0013] Preferably, a rotating inclined groove for controlling the movement of the deviation correction roller is rotatably arranged on the frame, and a transmission rod that moves synchronously with the belt is slidably assembled on the rotating inclined groove.

[0014] Preferably, the transmission rod is rotatably connected to the movable cam.

[0015] In the above technical solution, a combined belt conveyor provided by the present utility model has the following beneficial effects: through the design of the movable cam, when the belt slips, it slips reversely relative to the redirecting roller, causing the movable cam to deflect, and making the belt tense and straight through the pressing roller, thereby reducing the slipping phenomenon of the belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0017] Figure 1 Schematic diagram of the end structure of the belt conveyor provided by the embodiment of the present utility model;

[0018] Figure 2 Schematic diagram of the belt and the deviation correction roller provided by the embodiment of the present utility model;

[0019] Figure 3 Schematic diagram of the internal structure of the movable cam provided by the embodiment of the present utility model.

[0020] Description of the reference numerals:

[0021] 1. Belt; 11. Gear ring; 2. Frame; 3. Deviation correction roller; 4. Movable cam; 41. Ratchet wheel; 42. External teeth; 43. Pawl; 5. Redirecting roller; 6. Pressing roller; 7. Transmission rod; 8. Rotating inclined groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the following will further introduce the present utility model in detail with reference to the drawings.

[0023] As Figures 1-3 shown, a combined belt conveyor includes a belt 1 and a frame 2;

[0024] Rotate the redirecting roller 5 arranged at the end of the frame 2;

[0025] The movable cam 4 is movably arranged in the middle of the redirecting roller 5. Its first end abuts against the inner wall of the belt 1, and a pressing roller 6 is rotatably arranged at the second end opposite thereto. When the belt 1 slides reversely relative to the redirecting roller 5, the movable cam 4 deflects to make the pressing roller 6 press against the belt 1;

[0026] The movable cam 4 has a vertical working position for pressing against the belt 1.

[0027] Specifically, the belt 1 covers the outer wall of the redirecting roller 5. The redirecting roller 5 is driven by a motor and rotates synchronously with the belt 1. At this time, the first end of the movable cam 4 abuts against the belt 1 and the movable cam 4 maintains its initial horizontal state. When the belt 1 slips, it slides reversely relative to the redirecting roller 5. The signal of slipping can be obtained by the way of real-time monitoring of the belt 1 through a speed sensor, or it is found that the belt 1 slips by manual observation. Then, the movable cam 4 is driven to rotate by the driving motor or manually to make the movable cam 4 deflect to the vertical working position, so that the pressing roller 6 at the second end swings downward and presses against the belt 1, making the belt 1 taut, so that the friction between the belt 1 and the redirecting roller 5 increases and the slipping phenomenon of the belt 1 is reduced.

[0028] In the above technology, through the design of the movable cam 4, when the belt 1 slips, it slides reversely relative to the redirecting roller 5, making the movable cam 4 deflect, and making the belt 1 taut through the pressing roller 6, thereby reducing the slipping phenomenon of the belt 1.

[0029] As a further embodiment provided by the present utility model, the movable cam 4 is kept inclined by the friction of the belt 1, and a ratchet wheel 41 which forms a one-way rotation fit with the movable cam 4 is rotatably arranged at the first end of the movable cam 4, and a pawl 43 which is engaged with the ratchet wheel 41 is arranged on the movable cam 4.

[0030] Specifically, in the initial state, when the belt 1 operates normally, the belt 1 and the redirecting roller 5 rotate synchronously. Since the inner wall of the belt 1 abuts against the first end of the movable cam 4, the friction of the belt 1 on the movable cam 4 also includes the friction of the belt 1 on the ratchet wheel 41. The resultant force of these two frictions cancels out the self-weight of the movable cam 4, making the movable cam 4 keep an inclined state and not press against the belt 1. At this time, the ratchet wheel 41 forms a one-way rotation fit with the movable cam 4; when the belt 1 slips or slides reversely with respect to the redirecting roller 5, since the ratchet wheel 41 rotates forward under the friction of the redirecting roller 5, at this time the belt 1 slides reversely relative to the ratchet wheel 41, making the friction of the belt 1 on the ratchet wheel 41 increase and the direction opposite to the friction of the belt 1 on the movable cam 4. At this time, the resultant force cannot cancel out the self-weight of the movable cam 4, making the movable cam 4 deflect to the vertical working position under the action of its own weight, driving the pressing roller 6 to press down and making the belt 1 tightened.

[0031] As yet another embodiment further provided by the present utility model, a gear ring 11 is fixedly arranged in the middle of the inner wall of the belt 1, and a plurality of external teeth 42 meshing with the gear ring 11 are arranged in a circumferential array on the ratchet wheel 41.

[0032] Specifically, the rotation of the external teeth 42 is driven by the gear ring 11 fixed on the belt 1. At the same time, the gear ring 11 provides frictional force to the first end of the movable cam 4, ensuring that the movable cam 4 remains inclined when the belt 1 operates normally.

[0033] As yet another embodiment further provided by the present utility model, it further includes a deviation correction roller 3 arranged on the frame 2 and driven to deflect to correct the deviation of the belt 1.

[0034] Specifically, the deviation correction roller 3 includes an intermediate section arranged parallel to the belt 1 and two inclined sections symmetrically arranged with respect to the intermediate section. The deviation correction roller 3 rotates to squeeze the side of the belt 1 with the inclined sections, so that the belt 1 deflects in the direction of extrusion, achieving the effect of deviation correction.

[0035] As yet another embodiment further provided by the present utility model, a rotation slotted groove 8 for controlling the rotation of the deviation correction roller 3 is rotatably arranged on the frame 2, and a transmission rod 7 that moves synchronously with the belt 1 is slidably assembled on the rotation slotted groove 8.

[0036] Specifically, the transmission rod 7 is rotatably connected to the movable cam 4, so it moves with the movable cam 4. And due to the meshing relationship between the gear ring 11 and the external teeth 42, the movable cam 4 always remains parallel to the center line of the belt 1. A pin rod slidably matched with the rotation slotted groove 8 is arranged on the transmission rod 7. When the belt 1 deviates, it drives the transmission rod 7 to horizontally slide in the transverse direction of the belt 1 and drives the pin rod to slide. Since the moving path of the rotation slotted groove 8 relative to the transmission rod 7 is inclined, when the pin rod slides, it pushes the rotation slotted groove 8. And since the rotation slotted groove 8 is rotatably arranged on the frame 2, the transmission rod 7 drives the rotation slotted groove 8 to rotate. And to which side the transmission rod 7 deviates, the corresponding side of the deviation correction roller 3 approaches the redirecting roller 5.

[0037] Working principle: In the initial state, when the belt 1 operates normally, the belt 1 and the redirecting roller 5 rotate synchronously. Since the inner wall of the belt 1 abuts against the first end of the movable cam 4, the external tooth 42 is driven to rotate by the gear ring 11 fixed on the belt 1. At the same time, the gear ring 11 provides frictional force to the first end of the movable cam 4, and there is also the frictional force of the belt 1 on the ratchet 41. The resultant force of these two frictional forces cancels out the self-weight of the movable cam 4, so that the movable cam 4 maintains an inclined state and does not press against the belt 1. At this time, the ratchet 41 and the movable cam 4 form a one-way rotation fit. When the belt 1 slips or reversely slips between the belt 1 and the redirecting roller 5, since the ratchet 41 rotates forward under the frictional force of the redirecting roller 5, at this time the belt 1 reversely slips relative to the ratchet 41, making the frictional force of the belt 1 on the ratchet 41 increase and be opposite to the frictional force of the belt 1 on the movable cam 4. At this time, the resultant force cannot cancel out the self-weight of the movable cam 4, so that the movable cam 4 deflects to the vertical position under its own weight, driving the lower pressure roller 6 to press down and making the belt 1 tensioned, thereby increasing the frictional force between the belt 1 and the redirecting roller 5 and reducing the slipping phenomenon of the belt 1. And the movable cam 4 always remains parallel to the midline of the belt 1 through the meshing relationship between the gear ring 11 and the external tooth 42. And a pin rod slidably matched with the rotating chute 8 is arranged on the transmission rod 7. When the belt 1 deflects, it drives the transmission rod 7 to slide horizontally along the transverse direction of the belt 1 and drives the pin rod to slide. Since the moving path of the rotating chute 8 relative to the transmission rod 7 is inclined, when the pin rod slides, it pushes the rotating chute 8. And since the rotating chute 8 is rotatably arranged on the frame 2, the transmission rod 7 drives the rotating chute 8 to rotate. And on which side the transmission rod 7 deflects, the corresponding side of the deviation correcting roller 3 approaches the redirecting roller 5. The deviation correcting roller 3 rotates so that the inclined section presses against the side of the belt 1, thereby making the belt 1 deflect in the pressing direction and achieving the deviation correcting effect.

[0038] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A combined belt conveyor, characterized in that, It includes a belt (1) and a frame (2); A redirecting roller (5) rotatably arranged at the end of the frame (2); A movable cam (4) movably arranged in the middle of the redirecting roller (5), the first end of which abuts against the inner wall of the belt (1), and a pressing roller (6) is rotatably arranged at the second end opposite thereto. When the belt (1) slides reversely relative to the redirecting roller (5), the movable cam (4) deflects so that the pressing roller (6) presses against the belt (1) until the belt (1) is tensioned; The movable cam (4) has a vertical working position for pressing against the belt (1).

2. The combined belt conveyor according to claim 1, wherein, The movable cam (4) is kept inclined by the frictional force of the belt (1), and a ratchet wheel (41) that forms a one-way rotational fit with the movable cam (4) is rotatably arranged at the first end of the movable cam (4), and a pawl (43) that engages with the ratchet wheel (41) is arranged on the movable cam (4).

3. The modular belt conveyor according to claim 2, wherein A toothed ring (11) is fixedly arranged in the middle of the inner wall of the belt (1), and a plurality of external teeth (42) that engage with the toothed ring (11) are arranged in a circumferential array on the ratchet wheel (41).

4. The modular belt conveyor according to claim 1, wherein, It further includes a correcting roller (3) arranged on the frame (2) and driven to deflect to correct the belt (1).

5. The modular belt conveyor according to claim 4, wherein, A rotating inclined groove (8) for controlling the movement of the correcting roller (3) is rotatably arranged on the frame (2), and a transmission rod (7) that moves synchronously with the belt (1) is slidably assembled on the rotating inclined groove (8).

6. The modular belt conveyor according to claim 5, characterized in that, The transmission rod (7) is rotatably connected to the movable cam (4).

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