CN220454935U

CN220454935U - Coal sampling device

Info

Publication number: CN220454935U
Application number: CN202321986596.8U
Authority: CN
Inventors: 刘鹏; 高健; 王丹; 高飞; 梁军
Original assignee: Shaanxi Shenmu Chemical Industrial Co ltd; China Shenhua Coal to Liquid Chemical Co Ltd
Current assignee: Shaanxi Shenmu Chemical Industrial Co ltd; China Shenhua Coal to Liquid Chemical Co Ltd
Priority date: 2023-07-26
Filing date: 2023-07-26
Publication date: 2024-02-06
Anticipated expiration: 2033-07-26

Abstract

The utility model discloses a coal taking and sampling device which comprises a coal conveying belt, a portal frame, a motor screw mechanism, a first oil cylinder, a suspension arm, a turnover bucket and a second oil cylinder. The first cylinder drives the turnover bucket to lift and move through the suspension arm, the second cylinder is used for driving the turnover bucket to turn over and reset, the motor screw mechanism is used for driving the first cylinder to move and adjust along the width direction of the coal conveying belt, and then the turnover bucket is driven to move transversely, so that the turnover bucket can horizontally push and take the coal sample along the width direction of the coal conveying belt, the coal sample on the whole section of the width direction of the coal conveying belt can be taken, coal blocks and coal dust below can not be smashed, damage to the coal sample can not be caused, impact can not be caused to the coal conveying belt below, the turnover bucket can be accurately lifted to the position of the blanking opening to overturn and pour the coal sample, and the coal sample can fall into the blanking opening, so that the coal sample is effectively prevented from being wasted.

Description

Coal sampling device

Technical Field

The utility model relates to the technical field of coal sampling, in particular to a coal sampling device.

Background

In the coal mining process, coal is transported by a coal transporting belt of a belt conveyor. In order to study and analyze the components, quality and the like of coal, a coal sampling device is arranged beside or above the coal conveying belt. The coal sampling device can be manually operated or automatically operated through a remote controller so as to take coal samples from the coal conveying belt, and then the coal samples are conveyed to a designated channel or equipment and conveyed to an experiment place for analysis by researchers.

The Chinese patent publication No. CN204479373U discloses an automatic coal sampling and sample preparing device, which comprises a bracket longitudinally arranged on two sides of a coal conveying belt, wherein the top of the bracket is provided with a pivot shaft and a motor for driving the pivot shaft to rotate, a sampling arm is fixedly arranged on the pivot shaft, the tail end of the sampling arm is fixedly provided with a rotary bucket, and the rotary bucket is positioned right above the coal conveying belt.

The automatic coal sampling and sample preparation device disclosed in the above patent document has the following defects that a bucket is driven by a rocker arm to take coal from a coal conveying belt in a swinging mode, and the swinging direction of the bucket when taking the coal is opposite to the running direction of the coal conveying belt:

first: the bucket can smash coal pieces and coal dust downwards when swinging downwards and forwards to take coal, damage the coal sample, impact the coal conveying belt below and influence the service life of the coal conveying belt.

Second,: the bucket can not take the coal sample of the whole section of the width direction of the coal conveying belt, and can only take a part of the coal sample in the middle of the coal conveying belt.

Third,: when the coal sample is placed upside down by the bucket, the coal sample is completely thrown to the crusher in a throwing mode, and part of coal blocks, especially coal dust, fall off, so that waste is caused.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a coal sampling device, which can drive a first oil cylinder, a suspension arm and a turnover bucket to move along the width direction of a coal conveying belt through a motor screw mechanism, wherein the first oil cylinder can drive the suspension arm and the turnover bucket to move up and down, so that the turnover bucket can horizontally push and take a coal sample along the width direction of the coal conveying belt, the coal sample of the whole section of the width direction of the coal conveying belt can be taken, coal blocks and coal dust downwards can not be smashed, the coal sample can not be damaged, impact can not be caused to the coal conveying belt below, the turnover bucket can be accurately lifted to a discharging opening to overturn and fall down the coal sample, and the coal sample can fall into the discharging opening, so that the waste of the coal sample is effectively avoided.

The technical scheme of the utility model provides a coal taking and sampling device which comprises a coal conveying belt, a portal frame, a motor screw mechanism, a first oil cylinder, a suspension arm, a turnover bucket and a second oil cylinder;

the portal frame comprises a first side support, a second side support and a top beam connected between the upper ends of the first side support and the second side support, wherein the first side support and the second side support are positioned on two opposite sides of the coal conveying belt, and a discharging opening is formed in the second side support above the coal conveying belt;

the motor screw mechanism comprises a motor connected with the first side bracket, a screw rod which is pivotally connected between the first side bracket and the second side bracket and is in transmission connection with the motor, a motor driving mechanism and a motor driving mechanism the guide rod is fixedly connected between the first side bracket and the second side bracket, and the sliding block is in threaded connection with the screw rod and is in sliding connection with the guide rod;

the first cylinder barrel of the first oil cylinder is connected with the sliding block, the first piston rod of the first oil cylinder extends downwards, the upper end of the suspension arm is connected with the first piston rod, the overturning bucket is hinged to the lower end of the suspension arm, and the second oil cylinder is hinged between the overturning bucket and the suspension arm.

In one optional technical scheme, a first limit switch and a second limit switch which can be triggered by the sliding block are arranged below the top beam;

the first trigger spring piece of the first limit switch and the second trigger spring piece of the second limit switch respectively extend downwards, and the sliding block is located between the first trigger spring piece and the second trigger spring piece.

In one optional technical scheme, a third limit switch which can be triggered by the overturning bucket is arranged on the inner side of the first side bracket;

the third trigger spring piece of the third limit switch extends towards the coal conveying belt side, and when the third trigger spring piece is in an initial state, the third trigger spring piece is located above the coal conveying belt, and the height difference between the third trigger spring piece and the coal conveying belt is 1-3cm.

In one optional technical scheme, a fourth limit switch which can be triggered by the overturning bucket is arranged on the inner side of the second side bracket;

the fourth limit switch is arranged on the lower side edge of the feed opening;

and a fourth triggering spring piece of the fourth limit switch extends towards the side of the first side bracket.

In one optional technical scheme, the lower side edge of the feed opening is provided with a receiving boss extending towards the side of the first side bracket;

the fourth limit switch is arranged on the bottom surface of the bearing boss, and the end part of the fourth trigger spring plate extends out of the bearing boss.

In one optional aspect, the top surface of the receiving boss is a guiding inclined surface, and the guiding inclined surface gradually and downwardly extends in a direction from the receiving boss to the second side bracket.

In one optional technical scheme, two guide rods are connected between the first side support and the second side support, the two guide rods are located on the upper side and the lower side of the screw rod, and the sliding block is in sliding connection with the two guide rods.

In one optional aspect, the turning bucket includes a main body portion and a bucket portion connected to the main body portion;

the main body part is connected with the suspension arm through a pivot shaft, an ear plate is arranged on the main body part, and the pivot shaft is positioned between the ear plate and the bucket part;

the second cylinder barrel of the second oil cylinder is hinged with the suspension arm, and the second piston rod of the second oil cylinder is hinged with the lug plate.

In one optional technical scheme, the main body part is provided with an assembly groove for inserting the suspension arm, and two side groove walls of the assembly groove are respectively provided with an assembly hole for the pivot shaft to pass through;

the top surfaces of the groove walls at the two sides of the assembly groove are respectively provided with an ear plate; two second cylinders are connected between the suspension arm and the main body part, and the second cylinders of the two second cylinders are positioned on two opposite sides of the suspension arm;

the second piston rods of the two second oil cylinders are respectively hinged with the two lug plates.

In one optional technical scheme, a limiting plate for limiting the main body part is arranged on one side of the suspension arm, which faces the second side bracket;

when the main body part is in contact with the limiting plate, the overturning bucket is in a horizontal state.

By adopting the technical scheme, the method has the following beneficial effects:

the utility model provides a coal taking and sampling device which comprises a coal conveying belt, a portal frame, a motor screw mechanism, a first oil cylinder, a suspension arm, a turnover bucket and a second oil cylinder. The first cylinder drives the turnover bucket to lift and move through the suspension arm, the second cylinder is used for driving the turnover bucket to turn over and reset, the motor screw mechanism is used for driving the first cylinder to move and adjust along the width direction of the coal conveying belt, and then the turnover bucket is driven to move transversely, so that the turnover bucket can horizontally push and take the coal sample along the width direction of the coal conveying belt, the coal sample on the whole section of the width direction of the coal conveying belt can be taken, coal blocks and coal dust below can not be smashed, damage to the coal sample can not be caused, impact can not be caused to the coal conveying belt below, the turnover bucket can be accurately lifted to the position of the blanking opening to overturn and pour the coal sample, and the coal sample can fall into the blanking opening, so that the coal sample is effectively prevented from being wasted.

Drawings

The present disclosure will become more readily understood with reference to the accompanying drawings. It should be understood that: the drawings are for illustrative purposes only and are not intended to limit the scope of the present utility model. In the figure:

FIG. 1 is a schematic diagram of a coal sampling device according to an embodiment of the present utility model, when a motor screw mechanism and a first cylinder are both in an initial state;

fig. 2 is a schematic diagram of a coal sampling device according to an embodiment of the present utility model, when a motor screw mechanism and a first piston rod of a first cylinder are in a downward extending state;

FIG. 3 is a schematic diagram of a coal sampling device according to an embodiment of the present utility model, wherein after a motor screw mechanism drives a first cylinder, a boom and a turning bucket to push through a coal conveying belt, a first piston rod of the first cylinder drives the boom and the turning bucket to lift;

FIG. 4 is a schematic diagram of a coal sampling device according to an embodiment of the present utility model, in which a turning bucket turns over a discharge opening;

FIG. 5 is a side view of a coal sampling device according to an embodiment of the present utility model, as seen from a first side stand;

FIG. 6 is a side view of a coal sampling device according to an embodiment of the present utility model, as seen from the second side stand;

FIG. 7 is a cross-sectional view of the motor lead screw mechanism mounted between the first side bracket and the second side bracket;

FIG. 8 is a schematic view of a pilot hole of the slider provided with an internally threaded hole;

FIG. 9 is a schematic illustration of the attachment of the boom, the flip bucket, and the second cylinder;

FIG. 10 is a schematic diagram of the connection of the boom, limiting plate, and second cylinder;

FIG. 11 is a schematic view of two second cylinders mounted on either side of a boom;

FIG. 12 is a perspective view of the flip bucket from the bucket section;

fig. 13 is a perspective view of the tilting bucket from the main body.

Detailed Description

Specific embodiments of the present utility model will be further described below with reference to the accompanying drawings. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

As shown in fig. 1 to 9, the coal sampling device provided by an embodiment of the utility model comprises a coal conveying belt 1, a portal frame 2, a motor screw mechanism 3, a first oil cylinder 4, a suspension arm 5, a turning bucket 6 and a second oil cylinder 7.

The portal frame 2 comprises a first side support 21, a second side support 22 and a top beam 23 connected between the upper ends of the first side support 21 and the second side support 22, wherein the first side support 21 and the second side support 22 are positioned on two opposite sides of the coal conveying belt 1, and a feed opening 221 is arranged on the second side support 22 above the coal conveying belt 1.

The motor screw mechanism 3 includes a motor 31 connected to the first side bracket 21, a screw 32 pivotably connected between the first side bracket 21 and the second side bracket 22 and drivingly connected to the motor 31, a guide rod 33 fixedly connected between the first side bracket 21 and the second side bracket 22, and a slider 34 threadedly connected to the screw 32 and slidably connected to the guide rod 33.

The first cylinder 41 of the first cylinder 4 is connected with the sliding block 34, the first piston rod 42 of the first cylinder 4 extends downwards, the upper end of the suspension arm 5 is connected with the first piston rod 42, the overturning bucket 6 is hinged at the lower end of the suspension arm 5, and the second cylinder 7 is hinged between the overturning bucket 6 and the suspension arm 5.

The utility model provides a coal sampling device which is used for sampling coal samples. The coal taking and sampling device comprises a coal conveying belt 1, a portal frame 2, a motor screw mechanism 3, a first oil cylinder 4, a suspension arm 5, a turnover bucket 6 and a second oil cylinder 7. The coal transporting belt 1 is a belt of an adhesive tape conveyor, and is used for transporting coal. The portal frame 2 spans the coal conveying belt 1, and the portal frame 2 comprises a first side support 21, a second side support 22 and a top beam 23, wherein the first side support 21 and the second side support 22 are arranged on two sides of the coal conveying belt 1, and the top beam 23 is connected between the upper ends of the first side support 21 and the second side support 22 to play a reinforcing role. The first side bracket 21 and the second side bracket 22 can be formed by connecting a plurality of posts, and one or a plurality of bracket plates can also be adopted. The second side bracket 22 is provided with a blanking opening 221, and the blanking opening 221 is positioned above the coal conveying belt 1. For the discharge opening 221 in the tilting bucket 6 and discharging the shoveled coal sample. A pipe 24 for outputting a coal sample to a specified device (e.g., a crusher or the like) or a specified area (e.g., a detection analysis site) is connected to the outside of the feed opening 221.

The motor screw mechanism 3 is installed below the top beam 23, and the motor screw mechanism 3 includes a motor 31, a screw 32, a guide rod 33, and a slider 34. The motor 31 may be a servo motor or a stepping motor, which is installed at the outer side of the first side bracket 21. One end of the screw 32 is connected to the first side bracket 21 through a bearing, and the other end is connected to the second side bracket 22 through a bearing. The screw 32 is located below the top beam 23 and above the belt 1. One end of the screw 32 is in transmission connection with the motor 31, and the motor 31 drives the screw 32 to rotate. One end of the screw 32 may be directly connected to the motor shaft of the motor 31, or may be connected to the motor shaft of the motor 31 through a transmission mechanism (e.g., a transmission gear set). The guide rod 33 is arranged in parallel with the screw rod 32, one end of the guide rod 33 is fixedly connected with the first side bracket 21, and the other end is fixedly connected with the second side bracket 22. The slider 34 has an internally threaded hole 341 and a guide hole 342. The screw 32 passes through the internally threaded hole 341 and is screwed. The guide rod 33 passes through the guide hole 342 and the guide rod and the guide hole are in clearance fit. When the motor 31 drives the screw 32 to rotate, the sliding block 34 does not rotate, and under the action of the screw thread, the sliding block 34 can slide along the guide rod 33, so that the sliding block can move between the first side bracket 21 and the second side bracket 22. If the slider 34 moves toward the second side bracket 22 when the motor 31 rotates in the forward direction, the slider 34 moves toward the first side bracket 21 when the motor 31 rotates in the reverse direction.

The upper end of the first cylinder 41 of the first cylinder 4 is fixedly connected with the slider 34, and may be connected by a clip, a fastener, or the like. The first piston rod 42 of the first cylinder 4 extends vertically downward, i.e., toward the downward-facing belt 1. The upper end of the boom 5 is connected to the lower end of the first piston rod 42 by pins, clips, bolts, couplings or the like. The turning bucket 6 is hinged at the lower end of the boom 5 by a hinge or a pivot shaft, and the turning bucket 6 can swing relative to the boom 5 to realize turning unloading. The second cylinder 71 of the second cylinder 7 is hinged to the boom 5 by a hinge or a pivot, and its second piston rod 72 is hinged to the turning bucket 6 by a hinge or a pivot. The second cylinder 7 is used for driving the turning bucket 6 to swing and tilt for turning a certain angle, like a tipping bucket, so as to discharge the shoveled coal sample from the bucket opening 621. When the second cylinder 7 is in the initial state, the second piston rod 72 is in the extended state, the tilting bucket 6 is in the horizontal state, and the bucket opening 621 is directed toward the second side bracket 22 side. When the second cylinder 7 is in the retracted state, the second piston rod 72 is contracted, and the tilting bucket 6 swings obliquely and is tilted by a certain angle, so that the bucket opening 621 is inclined downward.

The coal taking and sampling device comprises a control system, wherein the control system comprises a motor control system and an oil cylinder control system. The motor 31 is in signal connection with a motor control system, which controls the operation of the motor 31. The first oil cylinder 4 and the second oil cylinder 7 are respectively connected with an oil cylinder control system, and the oil cylinder control system controls the telescopic stroke of the first oil cylinder 4 and the second oil cylinder 7. The oil cylinder control system controls the oil way and the oil quantity of the oil inlet and outlet cylinder through the electromagnetic valve to control the expansion and contraction quantity of a piston rod of the oil cylinder. The motor control system and the oil cylinder control system can be selectively controlled by a user through buttons of the remote controller, and can also operate according to preset parameters, instructions and the like. The motor control system and the oil cylinder control system are the contents in the prior art and are not described in detail herein.

After the devices are installed, the number of turns of the motor 31 driving the screw 32 to rotate is preset so as to drive the turning bucket 6 to transversely push through the coal conveying belt 1 and reset. The extension of the first piston rod 42 of the first cylinder 4 in the descending stage is preset to ensure that the turning bucket 6 can fall on the coal conveyor belt 1 or slightly above the coal conveyor belt 1 so that a coal sample can be scooped. The amount of contraction of the first piston rod 42 of the first cylinder 4 in the rising stage is preset to ensure that the turning bucket 6 can reach the discharge opening 221. The retraction amount of the second piston rod 72 of the second cylinder 7 when driving the turning bucket 6 to turn is preset to ensure that the turning bucket 6 can turn, and the coal sample sliding from the bucket port 621 is ensured to enter the blanking port 221 by tilting the blanking port 221 downward from the bucket port 621 instead.

According to the utility model, the first piston rod 42 of the first oil cylinder 4 drives the suspension arm 5 and the overturning bucket 6 to move up and down, the second oil cylinder 7 is used for driving the overturning bucket 6 to overturn and reset, the sliding block 34 of the motor screw mechanism 3 drives the first oil cylinder 4 to move and adjust along the width direction of the coal conveying belt 1, and further the overturning bucket 6 is driven to move transversely through the first oil cylinder 4 and the suspension arm 5, so that the overturning bucket 6 can horizontally push and take a coal sample along the width direction of the coal conveying belt 1, the coal sample of the whole section of the coal conveying belt 1 in the width direction can be taken, the coal blocks and coal dust below can not be smashed, the coal sample can not be damaged, impact can not be caused to the coal conveying belt 1 below, the overturning bucket 6 can be accurately lifted to the feed opening 221 to overturn and pour the coal sample, and the coal sample can fall into the feed opening 221, and the waste of the coal sample is effectively avoided.

The operation mode of the coal taking sampling device provided by the utility model is as follows, and a user can select to operate by adopting a remote controller or select automatic operation according to actual needs:

the first step: as shown in fig. 1, in the initial state, the slider 34 is reset to a side close to the first side bracket 21, the first piston rod 42 of the first cylinder 4 is contracted, the turning bucket 6 is in the horizontal state, and is suspended on the left side above the coal conveyor belt 1.

And a second step of: as shown in fig. 2, the first cylinder 4 starts to extend, the first piston rod 42 extends downwards, and drives the turning bucket 6 to reach one side of the coal conveyor belt 1, and the turning bucket 6 can be slightly higher than the coal conveyor belt 1.

And a third step of: the motor 31 drives the screw 32 to rotate forward, the sliding block 34 drives the first oil cylinder 4, the suspension arm 5 and the overturning bucket 6 to move rightwards together, at this time, the overturning bucket 6 is pushed over from the upper side of the coal conveying belt 1 along the width direction, and the coal sample enters the bucket groove 622 of the overturning bucket 6 through the bucket opening 621 until the bucket opening 621 of the overturning bucket 6 reaches the right side edge of the coal conveying belt 1.

Fourth step: as shown in fig. 3-4, the first cylinder 4 starts to retract, and the first piston rod 42 retracts upward, driving the turning bucket 6 to the discharge opening 221. After that, the second cylinder 7 starts the retraction operation, the second piston rod 72 retracts to drive the turning bucket 6 to turn and tilt by a certain angle, so that the bucket mouth 621 tilts to the lower discharge opening 221, the coal sample in the bucket groove 622 slides from the bucket mouth 621 and enters the discharge opening 221, and then the coal sample is output to a specified device (e.g., a crusher or the like) or a specified area (e.g., a detection analysis place) via the pipe 24.

In one embodiment, as shown in fig. 1-4 and 7, a first limit switch 26 and a second limit switch 27, which can be triggered by a slider 34, are provided below the top beam 23. The first triggering spring 261 of the first limit switch 26 and the second triggering spring 271 of the second limit switch 27 respectively extend downward, and the sliding block 34 is located between the first triggering spring 261 and the second triggering spring 271.

In this embodiment, a first limit switch 26 and a second limit switch 27 are disposed below the top beam 23, where the first limit switch 26 and the second limit switch 27 are travel switches, and include a trigger spring, and when the trigger spring is pressed, the travel switch sends a signal to indicate that the moving element has moved in place, and the control system can send a corresponding instruction.

The first limit switch 26 may be selectively installed inside the first side bracket 21, and the second limit switch 27 may be selectively installed inside the second side bracket 22.

The first triggering spring 261 of the first limit switch 26 and the second triggering spring 271 of the second limit switch 27 respectively extend downward, and the sliding block 34 is located between the first triggering spring 261 and the second triggering spring 271. After the sliding block 34 moves to the left, the first triggering spring 261 is pressed, and the first limit switch 26 is triggered. After the slider 34 moves to the right, the second trigger spring 271 is pressed, and the second limit switch 27 is triggered. The distance between the first trigger piece 261 and the second trigger piece 271 is greater than the width of the coal conveyor belt 1, the second trigger piece 271 is slightly outside the right side edge of the coal conveyor belt 1, and the first trigger piece 261 is outside the left side edge of the coal conveyor belt 1.

The first limit switch 26 and the second limit switch 27 can be respectively connected with a control system through signals, after the first limit switch 26 and the second limit switch 27 are triggered, signals are respectively sent to the control system, and the control system controls the motor 31 and the first oil cylinder 4 to operate and switch.

When the sliding block 34 moves rightwards, the overturning bucket 6 is horizontally pushed rightwards on the coal conveying belt 1, and after the sliding block 34 triggers the second limit switch 27, the control system gives out an instruction, the motor 31 stops running, and the first piston rod 42 of the first oil cylinder 4 starts to shrink upwards.

When the slide block 34 drives the first oil cylinder 4 and the like to move leftwards for resetting, after the slide block 34 triggers the first limit switch 27, the control system gives out an instruction, the motor 31 stops running, and the slide block 34 and the first oil cylinder 4 and the like stay at the initial positions.

In one embodiment, as shown in figures 1-4, a third limit switch 28 which can be triggered by the tilting bucket 6 is arranged on the inner side of the first side bracket 21.

The third triggering spring plate 281 of the third limit switch 28 extends towards the coal conveying belt 1, and when the third triggering spring plate 281 is in an initial state, the third triggering spring plate 281 is located above the coal conveying belt 1, and the height difference between the third triggering spring plate 281 and the coal conveying belt 1 is 1-3cm.

In this embodiment, a travel switch, namely a third limit switch 28, is disposed on the first side bracket 21 near the coal conveyor belt 1. The third trigger piece 281 of the third limit switch 28 extends toward the belt 1 side or toward the inside of the first side bracket 21. When the third trigger piece 281 is not pressed, that is, when the third trigger piece 281 is in the initial state, the third trigger piece 281 is about 1-3cm higher than the coal conveyor belt. When the third trigger piece 281 is pressed by the descending flip bucket 6, the third limit switch 28 is triggered. The third limit switch 28 is in signal connection with the control system, after the third limit switch 28 is triggered, a signal is sent to the control system, the control system controls the first oil cylinder 4 to stop descending, at the moment, the bottom plate of the overturning bucket 6 is positioned above the coal conveying belt 1 for about 1-3cm, and the overturning bucket cannot fall below the coal conveying belt 1, so that the overturning bucket can be ensured to be pushed horizontally along the width direction of the coal conveying belt 1.

After the third limit switch 28 is triggered, the control system also controls the motor 31 to drive the screw 32 to rotate forward, the slide 34 drives the first the cylinder 4 is moved to the right, the cylinder 4 is right the movement of the device is carried out.

After the slide 34 activates the second limit switch 27, it is indicated that the turning bucket 6 has been moved to the right into position, at which time the turning bucket 6 needs to be lifted. The first piston rod 42 of the first cylinder 4 starts to retract upward.

In one embodiment, as shown in fig. 1-4, the second side bracket 22 is provided on the inside with a fourth limit switch 29 that can be triggered by the tilting bucket 6.

The fourth limit switch 29 is installed at the lower side edge of the discharge opening 221.

The fourth triggering piece 291 of the fourth limit switch 29 extends toward the first side bracket 21 side.

In this embodiment, a travel switch, namely a fourth limit switch 29, is disposed on the inner side of the second side bracket 22 and at the lower side edge of the blanking opening 221. The fourth triggering piece 291 of the fourth limit switch 29 extends toward the first side bracket 21 side or toward the inside of the second side bracket 22. When the turning bucket 6 is lifted toward the feed opening 221 by the first cylinder 4, the fourth trigger elastic piece 291 is pressed by the coal sample in the turning bucket 6 or the bucket opening 621 thereof, and at this time, the fourth limit switch 29 is triggered. The fourth limit switch 29 is connected with a control system through signals, after the fourth limit switch 29 is triggered, the control system sends out signals, and the first oil cylinder 4 stops shrinking after time delay t1, so that the overturning bucket 6 is ensured to pass over the fourth triggering elastic piece 291 and reach the position of the feed opening 221. t1 can be set as desired, for example, t1 takes a value between 2 and 5 seconds. After t1, the control system sends out an instruction, the second oil cylinder 7 starts to retract, and the time t2 is kept, the second piston rod 72 retracts to drive the overturning bucket 6 to incline for a certain angle, so that the lower feed opening 221 of the bucket opening 621 inclines, the coal sample in the bucket groove 622 slides from the bucket opening 621 and enters the feed opening 221, and then the coal sample is output to a designated device (e.g. a crusher, etc.) or a designated area (e.g. a detection analysis place) through the pipeline 24. t2 can be set as desired, for example, t2 takes a value between 30s-3 min. After t2, the control system sends out an instruction, the second oil cylinder 7 is reset to an initial state, the overturning bucket 6 is driven to be restored to a horizontal state, the motor 31 drives the screw 32 to reversely rotate, and the sliding block 34 drives the first oil cylinder 4 and the like to be reset to an initial position.

The control logic of the control system is the content in the prior art, and can be specifically referred to the description in the prior art, the limit of each limit switch part is limited, and the setting mode and the setting position of each limit switch are mainly protected.

In one embodiment, as shown in fig. 1 to 4, the lower side edge of the blanking port 221 has a receiving boss 25 extending toward the first side bracket 21 side.

The fourth limit switch 29 is mounted on the bottom surface of the receiving boss 25, and the end of the fourth triggering spring 291 extends out of the receiving boss 25.

In this embodiment, an inwardly projecting receiving boss 25 is provided on the lower side edge of the discharge opening 221 to receive a coal sample that slides off the bucket opening 621.

The end of the fourth triggering spring 291 extends out of the receiving boss 25, and during the lifting process of the tilting bucket 6, the fourth triggering spring 291 can be touched, so that the fourth limit switch 29 is triggered. The fourth limit switch 29 is installed on the bottom surface of the receiving boss 25, so that the coal sample falling down can be prevented from being crashed, and a protection effect is achieved.

In one embodiment, as shown in fig. 1-4, the top surface of the receiving boss 25 is a guide slope 251, and the guide slope 251 gradually extends obliquely downward in the direction from the receiving boss 25 to the second side bracket 22.

In this embodiment, the top surface of the receiving boss 25 is a guiding inclined surface 251, which is beneficial to guiding the falling coal sample to slide towards the pipeline 24.

In one embodiment, as shown in fig. 1-4 and fig. 7-8, two guide rods 33 are connected between the first side bracket 21 and the second side bracket 22, the two guide rods 33 are located on the upper side and the lower side of the screw 32, and the sliding block 34 is slidably connected with the two guide rods 33.

In this embodiment, a guide rod 33 is disposed on each of the upper and lower sides of the screw 32, and two guide holes 342 are disposed on the slider 34 correspondingly. The slide 34 cooperates with the two guide rods 33, improving the assembly and guide stability.

In one embodiment, as shown in fig. 9-13, the flip bucket 6 includes a main body portion 61 and a bucket portion 62 connected to the main body portion 61.

The main body 61 is connected to the boom 5 by means of a pivot shaft 8, the body portion 61 is provided with an ear plate 63, the pivot shaft 8 is located between the ear plate 63 and the bucket portion 62.

The second cylinder 71 of the second cylinder 7 is hinged to the boom 5, and the second piston rod 72 of the second cylinder 7 is hinged to the ear plate 63.

In this embodiment, the lower end of the boom 5 has a mounting hole 51, and the pivot shaft 8 passes through the mounting hole 51. The turning bucket 6 includes a main body portion 61 and a bucket portion 62. The main body 61 is to be assembled with the boom 5, and the bucket opening 621 and the bucket groove 622 are provided in the bucket portion 62. Bucket mouth 621 is at opposite ends of bucket portion 62 from main body portion 61. The main body 61 is pivotally connected to the pivot shaft 8, and the main body 61 is rotatable relative to the boom 5. An ear plate 63 is provided on the top surface of the main body portion 61, and the pivot shaft 8 is located between the ear plate 63 and the bucket portion 62 in the left-right direction. The second cylinder 71 of the second cylinder 7 is hinged to the boom 5 by means of a hinge or pivot, and the second piston rod 72 of the second cylinder 7 is hinged to the ear plate 63 by means of a hinge or pivot. When the second piston rod 72 is extended, the flip bucket 6 can be driven to a horizontal state. When the second piston rod 72 is contracted, the tilting bucket 6 can be driven to tilt in a tilting manner, and the bucket opening 621 tilts downward.

In one of the embodiments, as shown in fig. 11 to 13, the main body portion 61 is provided with a fitting groove 611 for insertion of the boom 5, and both side groove walls 612 of the fitting groove 611 are respectively provided with fitting holes 613 for passing the pivot shaft 8.

The top surfaces of the groove walls 612 on both sides of the fitting groove 611 are respectively provided with an ear plate 63. Two second cylinders 7 are connected between the suspension arm 5 and the main body 61, and second cylinders 71 of the two second cylinders 7 are positioned on two opposite sides of the suspension arm 5.

The second piston rods 72 of the two second cylinders 7 are respectively hinged with the two lug plates 63.

In this embodiment, two second cylinders 7 are hinged to two sides of the boom 5, and the two second cylinders 7 are arranged at intervals along the axial direction of the pivot shaft 8.

The rear end of the main body 61 is provided with a vertically penetrating fitting groove 611 for inserting the lower end of the boom 5. The both side groove walls 612 of the fitting groove 611 are respectively provided with fitting holes 613 for the pivot shaft 8 to pass through the fitting. The top surfaces of the groove walls 612 on the two sides are respectively provided with an ear plate 63, and the second piston rods 72 of the two second oil cylinders 7 are respectively hinged with the two ear plates 63, so that the stability of the lifting turnover bucket 6 is facilitated.

In one embodiment, as shown in fig. 9-10, the side of the boom 5 facing the second side bracket 22 is provided with a stop plate 52 for limiting the main body 61. When the main body 61 is in contact with the stopper plate 52, the tilting bucket 6 is in a horizontal state.

In this embodiment, a limiting plate 52 is disposed on the front side of the boom 5, and when the turning bucket 6 is reset to a horizontal state, the limiting plate 52 presses on the main body 61 to perform a limiting function, so as to prevent the second cylinder 7 from driving the turning bucket 6 to rotate and transition.

The above technical schemes can be combined according to the need to achieve the best technical effect.

The foregoing is only illustrative of the principles and preferred embodiments of the present utility model. It should be noted that several other variants are possible to those skilled in the art on the basis of the principle of the utility model and should also be considered as the scope of protection of the present utility model.

Claims

1. The coal taking and sampling device is characterized by comprising a coal conveying belt, a portal frame, a motor screw mechanism, a first oil cylinder, a suspension arm, a turnover bucket and a second oil cylinder;

the motor lead screw mechanism comprises a motor connected with the first side bracket, a screw rod which is pivotally connected between the first side bracket and the second side bracket and is in transmission connection with the motor, a guide rod fixedly connected between the first side bracket and the second side bracket, and a sliding block which is in threaded connection with the screw rod and is in sliding connection with the guide rod;

2. The coal sampling device according to claim 1, wherein a first limit switch and a second limit switch which can be triggered by the sliding block are arranged below the top beam;

3. The coal sampling device of claim 1, wherein a third limit switch which can be triggered by the turning bucket is arranged on the inner side of the first side bracket;

4. The coal sampling apparatus according to claim 1, it is characterized in that the method comprises the steps of, a fourth limit switch which can be triggered by the overturning bucket is arranged on the inner side of the second side bracket;

the fourth limit switch is arranged on the lower side edge of the feed opening;

5. The coal sampling apparatus of claim 4, wherein a lower side edge of the feed opening has a receiving boss extending toward the first side bracket side;

6. The coal sampling apparatus of claim 5, wherein the top surface of the receiving boss is a guide ramp extending progressively downwardly in a direction from the receiving boss to the second side bracket.

7. The coal sampling device according to claim 1, wherein two guide rods are connected between the first side support and the second side support, the two guide rods are located on the upper side and the lower side of the screw rod, and the sliding block is in sliding connection with the two guide rods.

8. The coal sampling device of claim 1, wherein the turning bucket comprises a main body portion and a bucket portion connected to the main body portion;

9. The coal sampling device according to claim 8, wherein the main body portion is provided with an assembly groove for insertion of the boom, and two side groove walls of the assembly groove are respectively provided with an assembly hole for passing through of the pivot shaft;

two of the second the second part of the oil cylinder the piston rod is respectively hinged with the two lug plates.

10. The coal sampling device according to claim 8, wherein a limiting plate for limiting the main body part is arranged on one side of the suspension arm facing the second side bracket;