Tensioning device for downward conveying crossheading belt conveyor

Abstract

The utility model relates to the technical field of downward conveying crossheading belt conveyors, in particular to a tensioning device for a downward conveying crossheading belt conveyor, which comprises a winch, a bin frame, a heavy punch device, a heavy punch device guide rod, a top plate, a first pulley block, a second pulley block and a reversing pulley block. The heavy hammer device is slidably arranged on the heavy hammer device guide rod in the vertical direction, a steel wire rope is wound on the winch, one end of the steel wire rope sequentially penetrates through the first pulley block, the reversing pulley block and the second pulley block and is fixedly connected with the top plate, and the first pulley block comprises a plurality of pulleys I alternately arranged between the belt conveyor moving trolley and the bin frame. The second pulley block comprises a plurality of pulleys II which are alternately arranged between the top plate and the heavy hammer device; and a heavy hammer locking mechanism is arranged on the heavy hammer device guide rod. The winch and the heavy hammer are combined for tensioning, and the tensioning force is stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of down-carrying chute belt conveyors, and more specifically to a tensioning device for down-carrying chute belt conveyors. Background Art

[0002] Due to the requirements of the coal mining process, the tail of the down-haul chute belt conveyor needs to move in time during operation, and its driving device is not convenient to be arranged at the tail of the machine. Therefore, the driving device and the tensioning device are arranged at the head position, which is at the point where the belt tension of the down-haul chute belt conveyor is the smallest. The belt tension changes continuously during the operation of the down-haul chute belt conveyor under the influence of various complex working conditions. The existing tensioning device cannot stabilize the tensioned belt in time and cannot ensure the minimum non-slip force required for the roller friction traction belt to operate, which easily causes the belt conveyor to slip and run away, and the existing tensioning device is not convenient for retracting and releasing the belt.

[0003] Therefore, it is necessary to improve the prior art. Utility Model Content

[0004] In order to overcome the deficiencies in the prior art, a tensioning device for a down-carrying chute belt conveyor is provided, which can be tensioned in real time and is convenient for retracting and releasing the belt.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A tensioning device for a down-carrying chute belt conveyor comprises a winch, a warehouse frame, a weight device, a guide rod for the weight device, a top plate, a first pulley block, a second pulley block and a reversing pulley block, wherein the top plate is relatively fixed to the guide rod for the weight device, the winch is fixedly arranged on the warehouse frame, the weight device is slidably arranged on the guide rod for the weight device in a vertical direction, a steel wire rope is wound around the winch, and one end of the steel wire rope passes through the first pulley block, the reversing pulley block, the second pulley block in sequence and is fixedly connected to the top plate;

[0007] The first pulley block includes a plurality of pulleys I alternately arranged between the belt conveyor traveling trolley and the storage frame, and the second pulley block includes a plurality of pulleys II alternately arranged between the top plate and the weight device;

[0008] A weight locking mechanism is arranged on the guide rod of the weight device.

[0009] Preferably, both sides of the weight device are provided with limiting grooves that cooperate with the guide rod of the weight device, the weight locking mechanism includes a pin shaft, the lower end of the guide rod of the weight device is provided with a lower limiting block and a positioning hole, the side of the limiting groove is provided with a locking hole that cooperates with the positioning hole, and the locking hole and the positioning hole are locked by a pin shaft.

[0010] Preferably, a controller is further included, an upper travel switch and a lower travel switch are arranged on the guide rod of the weight device, the upper travel switch and the lower travel switch are electrically connected to the controller, and the controller is electrically connected to the drive motor of the winch.

[0011] Preferably, the first pulley block includes four pulleys I, and the four pulleys I are arranged on the same horizontal plane; the second pulley block includes four pulleys II, and the four pulleys II are arranged on the same vertical plane.

[0012] Preferably, the storage rack and the guide rod of the weight device are fixedly arranged on the bottom plate of the tunnel, and the top plate is fixedly arranged on the top plate of the tunnel.

[0013] Preferably, a fixed rope seat is provided at the lower end of the top plate, and one end of the steel wire rope is fixedly connected to the fixed rope seat.

[0014] Working principle:

[0015] When the belt conveyor is operating normally, the winch does not rotate, and a heavy hammer is used for tensioning. The tensioning force is stable and tensioned at all times. When the belt conveyor needs to retract or release the tape, the heavy hammer device and the guide frame of the heavy hammer device are locked, and the winch is used for tensioning to meet the tensioning requirements of a large stroke.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The utility model adopts a structure of combined tensioning of winch and weight, and the tensioning force is stable and reliable. When the belt conveyor needs to retract and release the belt, the winch is used for tensioning to meet the tensioning requirements of a large stroke. When the belt conveyor is operating normally, the winch does not rotate, and the weight device is used for tensioning. The tensioning force is stable and tensioned at all times, which can offset the elongation caused by permanent deformation of the belt, and offset the difference in belt deformation and expansion caused by different tensions during the startup and normal operation of the lower chute belt conveyor, ensure the minimum non-slip force required for the roller friction to pull the belt, prevent the lower chute belt conveyor from slipping and running away, eliminate safety hazards, and improve transportation efficiency.

[0018] 2. The utility model is provided with a down-stroke switch and an up-stroke switch on the guide rod of the weight device. When the belt conveyor works normally, tension is performed through the weight device. If the stroke of the weight device exceeds the down-stroke switch or the up-stroke switch, the controller controls the winch to rotate and raise or lower the weight device to prevent the weight device from losing its tensioning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The specific implementation of the utility model will be further described in detail below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the installation of the first pulley block;

[0022] Figure 3 This is a schematic diagram of the installation of the second pulley block;

[0023] Figure 4 This is a schematic diagram of the installation of the heavy hammer device.

[0024] In the figure: 1-winch, 2-warehouse frame, 3-weight device, 4-weight device guide rod, 5-top plate, 6-first pulley block, 7-reversing pulley block, 8-second pulley block, 9-wire rope, 10-belt conveyor traveling trolley, 11-upper travel switch, 12-lower travel switch, 13-fixed rope seat, 14-positioning hole, 15-lower limit block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figures 1 to 4 As shown, a tensioning device for a down-carrying chute belt conveyor comprises a winch 1, a magazine frame 2, a weight device 3, a weight device guide rod 4, a top plate 5, a first pulley block 6, a second pulley block 8 and a reversing pulley block 7. The magazine frame 2 and the weight device guide rod 3 are fixedly arranged on the tunnel bottom plate, the top plate 5 is fixedly arranged on the tunnel top plate or the tunnel top plate is used as the top plate, a fixed rope seat 13 is arranged at the lower end of the top plate, the winch 1 is fixedly arranged on the magazine frame 2, the weight device 3 is slidably arranged on the weight device guide rod 4 in a vertical direction, a steel wire rope 9 is wound around the winch 1, and one end of the steel wire rope 9 passes through the first pulley block 6, the reversing pulley block 7, the second pulley block 8 in sequence and is fixedly connected to the fixed rope seat 13.

[0027] A weight locking mechanism is provided on the guide rod 4 of the weight device, and limiting grooves cooperating with the guide rod 4 of the weight device are provided on the left and right sides of the weight device 3. The weight device 3 is restricted from moving along the guide rod 4 of the weight device by the limiting grooves. The weight locking mechanism includes a pin shaft, and a lower limiting block 15 and a positioning hole 14 are provided at the lower end of the guide rod 4 of the weight device. A locking hole cooperating with the positioning hole 14 is provided on the side of the limiting groove. The locking of the weight device is achieved by passing the pin shaft through the locking hole and the positioning hole 14 at the same time.

[0028] When the weight device 3 is tensioned, in order to prevent the weight device 3 from moving beyond the stroke, an upper stroke switch 11 and a lower stroke switch 12 are provided on the weight device guide rod 4, and both the upper stroke switch 11 and the lower stroke switch 12 are electrically connected to the controller, and the controller is electrically connected to the driving motor of the winch 1. When the weight device 3 contacts the upper stroke switch 1 or the lower stroke switch 12, the controller is used to control the winch 1 to lower or raise the weight device 3.

[0029] Preferably, the first pulley group 6 includes four pulleys I alternately arranged between the belt conveyor traveling trolley 10 and the warehouse frame 2, two of which are arranged on the belt conveyor traveling trolley 10 and the warehouse frame 2 respectively, and the four pulleys I are arranged in the same horizontal plane, and the wire rope 9 alternately passes through the pulleys I on the belt conveyor traveling trolley 10 and the warehouse frame 2; the reversing pulley group 7 is used to guide the wire rope 9 into the second pulley group 8, and the second pulley group 8 includes four pulleys II alternately arranged between the top plate 5 and the weight device 3, and the four pulleys II are arranged in the same vertical plane, and the wire rope 9 is alternately fixed to the four pulleys II on the top plate 5 and the weight device 3 and the fixed rope seat.

[0030] When the tape needs to be retracted or released, the weight device 3 is first lowered onto the lower limit block 15. At this time, the locking hole and the positioning hole are coaxial, and the pin shaft is inserted into the locking hole and the positioning hole to lock the weight device 3. The winch 1 is used to act and the belt conveyor traveling trolley 7 is pulled to move to perform the tape retracting or releasing operation.

[0031] When the down-carrying chute belt conveyor needs to operate normally, the weight device 3 is used for tensioning operation. First, the belt is loosened, the limit of the weight device 3 is released, and the winch 1 is started to lift the weight device 3 to a suitable position to meet the tensioning stroke requirements. The winch 1 stops and the down-carrying chute belt conveyor runs. The weight device 3 provides a stable tensioning force to tension the belt at all times. The tensioning device should be arranged at the place where the belt conveyor has the lowest tension, that is, close to the unloading part, to reduce the weight of the weight device.

[0032] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.

Claims

1. A tensioning device for a down-carrying chute belt conveyor, characterized in that: The invention comprises a winch (1), a warehouse frame (2), a weight device (3), a guide rod (4) for the weight device, a top plate (5), a first pulley block (6), a second pulley block (8) and a reversing pulley block (7), wherein the top plate (5) is relatively fixed to the guide rod (4) for the weight device, the winch (1) is fixedly arranged on the warehouse frame (2), the weight device (3) is slidably arranged on the guide rod (4) for the weight device in a vertical direction, a steel wire rope (9) is wound around the winch (1), and one end of the steel wire rope (9) passes through the first pulley block (6), the reversing pulley block (7) and the second pulley block (8) in sequence and is fixedly connected to the top plate (5); The first pulley block (6) comprises a plurality of pulleys I alternately arranged between the belt conveyor trolley (10) and the storage frame (2), and the second pulley block (8) comprises a plurality of pulleys II alternately arranged between the top plate (5) and the weight device (3); A weight locking mechanism is provided on the weight device guide rod (4).

2. A tensioning device for a down-carrying chute belt conveyor according to claim 1, characterized in that: The left and right sides of the weight device (3) are both provided with limiting grooves that cooperate with the weight device guide rod (4); the weight locking mechanism comprises a pin shaft; a lower limiting block (15) and a positioning hole (14) are provided at the lower end of the weight device guide rod (4); a locking hole that cooperates with the positioning hole (14) is provided on the side of the limiting groove; the locking hole and the positioning hole (14) are locked by the pin shaft.

3. A tensioning device for a down-carrying chute belt conveyor according to claim 2, characterized in that: It also includes a controller, wherein an upper travel switch (11) and a lower travel switch (12) are provided on the guide rod (4) of the weight device, and the upper travel switch (11) and the lower travel switch (12) are both electrically connected to the controller, and the controller is electrically connected to the drive motor of the winch (1).

4. The tensioning device for a down-carrying chute belt conveyor according to claim 1, characterized in that: The first pulley group (6) comprises four pulleys I, and the four pulleys I are arranged on the same horizontal plane. The second pulley group (8) comprises four pulleys II, and the four pulleys II are arranged on the same vertical plane.

5. The tensioning device for a down-carrying chute belt conveyor according to claim 1, characterized in that: The storage frame (2) and the guide rod (4) of the weight device are both fixedly arranged on the bottom plate of the tunnel, and the top plate (5) is fixedly arranged on the top plate of the tunnel.

6. The tensioning device for a down-carrying chute belt conveyor according to claim 1, characterized in that: A fixed rope seat (13) is provided at the lower end of the top plate, and one end of the steel wire rope (9) is fixedly connected to the fixed rope seat (13).

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