CN118518404B - A belt fully automatic sampling method and device - Google Patents

Abstract

The invention discloses a full-automatic belt sampling method and device, the device comprises a base and a bucket, wherein a transverse plate is rotatably arranged on the base, a bucket is rotatably arranged at each of two ends of the transverse plate, a coal conveying mechanism and a detection mechanism are correspondingly arranged below each of two ends of the transverse plate, the full-automatic belt sampling method and device also comprises a protection unit, the protection unit comprises a first elastic piece and a shovel head, a U-shaped groove is formed at the end part of the bucket, the shovel head is slidably arranged in the U-shaped groove, and the shovel head is connected with the inner wall of the U-shaped groove through the first elastic piece; carry out the operation of getting material through the scraper bowl to the coal sample, owing to the scraper bowl tip is provided with the shovel head to be connected through first elastic component between shovel head and the U-shaped groove, make the shovel head have certain elasticity, even when shovel head and scraper bowl support each other tightly with the belt, through the elasticity of first elastic component, make shovel head shrink to the U-shaped inslot of scraper bowl, make the shovel head reduce to belt extrusion force, greatly reduced belt damage's frequency.

Description

A belt fully automatic sampling method and device

Technical Field

The invention relates to the technical field related to coal mine sampling, and in particular to a fully automatic belt sampling method and device.

Background Art

As is known, the traditional coal quality analysis process mainly includes three steps: sampling, sample preparation and testing. In order to timely grasp the coal quality of the coal preparation plant production process, sampling work needs to be carried out. The coal quality analysis process initially relied mainly on manual sampling, which means that on-site inspectors take sampling shovels to take samples. Manual sampling requires high manpower costs, high labor intensity and high risk factors for sampling personnel; moreover, manual sampling has human errors such as randomness and hysteresis, resulting in low coal quality sampling accuracy.

With the development of technology, coal quality sampling technology has been improved and upgraded on the basis of manual sampling. Through the combination of computer hardware and software, manual sampling has been significantly improved, the accuracy has been significantly improved, the actual controllability has become stronger and stronger, and it has played an important role in sampling. Mechanized sampling relies on a sampling machine to complete automatic sampling. Figure 1 is a schematic diagram of an automatic sampling device in the prior art. As shown in Figure 1, the sampling machine includes a base 1 and a stepper motor 2. A protective box 3 is provided on the base. A stepper motor 2 is provided in the protective box 3 on the base. The output shaft of the stepper motor 2 passes through the protective box 3 upward and is fixedly connected to the bottom end of the column 4. Two cross plates 5 are symmetrically arranged on both sides of the top of the column 4. A first oil cylinder 6 is provided on the two cross plates 5. A support plate 7 is fixedly connected to the piston rod of the first oil cylinder 6. Two connecting rods 8 are symmetrically arranged at both ends of the bottom surface of the two support plates 7, that is, two connecting rods 8 are provided on each support plate 7. A bucket 9 is rotatably arranged between the two connecting rods 8. A second oil cylinder 10 is hinged on the support plate 7. The output end of the second oil cylinder 10 is connected to the bucket 9. A plurality of shovel teeth 11 are provided on the bucket 9. The shovel teeth 11 are arranged opposite to the conveying direction of the belt 14 when in use. A mounting seat 12 is mounted on the top surface of the base 1, and a sample box 13 is placed on the mounting seat 12.

When the above-mentioned sampling machine is working, the stepper motor 2 drives the column 4 to rotate 180 degrees, and the column 4 drives the bucket 9 to rotate 180 degrees, so that the bucket 9 is aligned with the belt, and then the first oil cylinder 6 drives the bucket 9 and the shovel teeth 11 to press against the belt, and the second oil cylinder 10 drives the bucket 9 to rotate, so that the bucket 9 excavates and samples the coal sample on the belt. When the bucket 9 completes the sampling, the stepper motor 2 drives the column 4 to rotate 180 degrees, so that the column 4 drives the cross plate 5 to rotate 180 degrees, and the cross plate 5 drives the bucket 9 to rotate 180 degrees through the support plate 7 and the connecting rod 8, so that the bucket is aligned with the sample box 13, and the first oil cylinder 6 drives the bucket 9 and the shovel teeth 11 to move to the top of the sample box 13, and the second oil cylinder 10 drives the bucket 9 to rotate, so that the coal sample in the bucket 9 falls into the sample box 13, thus completing a sampling operation of the coal sample.

For example, the sampling device and coal conveying sampling equipment disclosed in the patent with announcement number CN106289878B and publication date November 21, 2023, discloses a sampling device and coal conveying sampling equipment, wherein the sampling device comprises a sampling arm (2) and a sampling spoon (1) connected to one end of the sampling arm (2) and having a sampling cavity, wherein the lateral width of the sampling cavity of the sampling spoon (1) is adjustable. The sampling device and coal conveying sampling equipment provided by the invention can effectively realize full-section sampling, and prevent the problem of bucket elevator blockage caused by excessive sampling volume or unrepresentative sampling caused by half-section sampling.

The shortcoming of the existing technology is that, due to the certain vibration effect of the coal conveying mechanism during the conveying process, the conveyed coal shows a segregation phenomenon in which small-sized coal is gathered at the bottom and large-sized coal is gathered at the top. Based on this, when the sampling machine is actually used, in order to make the sample representative, the sample is required to cover the vertical section on the coal conveying mechanism, and the bucket is required to shovel the complete part from top to bottom of the coal conveying mechanism. As a result, when the bucket is sampling the coal sample, the tip of the bucket will abut against the belt of the coal conveying mechanism, and the coal conveying mechanism will produce slight vertical vibrations during the conveying process, which causes the bucket to be frequently squeezed on the belt, easily causing damage to the belt.

Summary of the invention

The purpose of the present invention is to provide a fully automatic belt sampling method and device to solve the technical problems in the related art.

In order to achieve the above object, the present invention provides the following technical solutions:

A fully automatic belt sampling device comprises a base and a bucket, wherein a transverse plate is rotatably provided on the base, and a bucket is rotatably provided at each end of the transverse plate, and the lower parts of the two ends of the transverse plate are respectively used to correspondingly provide a coal conveying mechanism and a detection mechanism, and further comprises a protection unit, wherein the protection unit comprises a first elastic member and a shovel head, a U-shaped groove is provided at the end of the bucket, a shovel head is slidably installed in the U-shaped groove, and the shovel head and the inner wall of the U-shaped groove are connected by a first elastic member.

As mentioned above, a first driving member is arranged on the base.

As mentioned above, the output end of the first driving member is provided with a second driving member, and the top end of the second driving member is provided with a horizontal plate.

As mentioned above, two sampling units are symmetrically arranged at both ends of the horizontal plate, and the sampling unit includes a sliding plate. Two through grooves are symmetrically opened at both ends of the horizontal plate, and a sliding plate is slidably installed in each of the two through grooves. Two supporting plates are symmetrically installed at the bottom ends of the two sliding plates, and a bucket is rotatably installed between the two support plates of the same sliding plate through a positioning shaft.

As mentioned above, the two sliding plates and the transverse plate are connected via a second elastic member.

As mentioned above, a plurality of third driving members are rotatably mounted on each of the two sliding plates, and the output end of each of the third driving members is connected to the middle of the bucket in a rotatably matched manner.

As mentioned above, a protection box is arranged on the base outside the first driving member, and the protection box surrounds the first driving member.

As mentioned above, a fourth driving member is arranged on the base, a flat plate is installed at the output end of the fourth driving member, an electronic scale is arranged on the flat plate, a mounting seat is arranged on the electronic scale, an electromagnet is arranged in the mounting seat, and a sample box is placed on the mounting seat.

As mentioned above, a plurality of circular grooves are evenly arranged at the bottom end of the base, a connecting round rod is slidably installed in each of the circular grooves, the top end of each connecting round rod and the corresponding circular groove are connected by a plurality of evenly arranged third elastic members, a U-shaped frame is rotatably installed at the bottom end of each connecting round rod, and a roller is rotatably installed on each of the U-shaped frames.

A belt full-automatic sampling method, which is based on the above-mentioned belt full-automatic sampling device, and the belt full-automatic sampling method comprises the following steps:

1. Sorting operation: The minerals are sorted by the jig. The minerals are stratified by density and gravity in the jig, so that the low-density mineral particles are concentrated in the upper layer and the high-density mineral particles are concentrated in the bottom. They are discharged from the jig respectively to obtain products of different densities, such as coal and gangue;

2. Transportation operation: the medium coal and gangue fall into the belt conveyor, and the medium coal and gangue are transported by the belt conveyor;

3. Sampling operation: Sampling operation is carried out on medium coal and gangue. The medium coal and gangue are sampled separately by the above-mentioned belt automatic sampling device. The medium coal and gangue are transported to the online ash analyzer. The ash content value of the medium coal or gangue is obtained by the online ash analyzer, and the sampling and detection results of the medium coal and gangue are obtained.

The beneficial effect of the present invention is that when coal samples are taken through a bucket, a shovel head is provided at the end of the bucket, and the shovel head is connected to the U-shaped groove by a first elastic member, so that the shovel head has a certain elasticity. Even when the shovel head and the bucket are pressed against the belt, the elastic force of the first elastic member causes the shovel head to shrink into the U-shaped groove of the bucket, thereby reducing the squeezing force of the shovel head on the belt, thereby greatly reducing the frequency of belt damage.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

Fig. 1 is a schematic diagram of the principle of the present invention;

FIG2 is a schematic diagram of a partial three-dimensional structure of the present invention;

FIG3 is a schematic cross-sectional view of the structure of FIG2 of the present invention;

FIG4 is a schematic diagram of a partial three-dimensional structure of another embodiment provided by the present invention;

FIG5 is a schematic diagram of a partial cross-sectional structure of a roller of the present invention;

FIG6 is a schematic diagram of a partial three-dimensional structure of another embodiment provided by the present invention;

FIG7 is a schematic diagram of a partial cross-sectional structure of FIG6 of the present invention at a first viewing angle;

FIG8 is a schematic diagram of a partial cross-sectional structure of FIG6 of the present invention at a second viewing angle;

FIG. 9 is a schematic diagram of a partial cross-sectional structure of yet another embodiment of the present invention.

Description of reference numerals:

1. Base; 2. Stepper motor; 3. Protective box; 4. Column; 5. Horizontal plate; 6. First oil cylinder; 7. Support plate; 8. Connecting rod; 9. Bucket; 10. Second oil cylinder; 11. Shovel teeth; 12. Mounting seat; 13. Sample box; 14. Belt; 15. Through groove; 16. Second elastic member; 17. Third driving member; 18. Fourth driving member; 19. Round groove; 20. Connecting round rod; 21. Third elastic member; 22. U-shaped frame; 23. Roller; 24. Arc plate; 25. Positioning shaft; 26. Arc through groove; 27. Expansion space; 28. Arc rack; 29. Transmission round rod; 30 , baffle; 31, tightening rod; 32, driving gear; 33, cross bar; 34, extrusion rod; 35, L-shaped groove; 36, vertical groove; 37, horizontal groove; 38, driven round rod; 39, rectangular frame; 40, lifting plate; 41, friction member; 42, supporting plate; 43, slide groove; 44, auxiliary plate; 45, first rotating plate; 46, second rotating plate; 47, triangular plate; 48, anti-drop plate; 49, fourth elastic member; 50, fifth elastic member; 51, shovel head; 52, first elastic member; 53, U-shaped groove; 54, straight plate; 55, first driving member; 56, second driving member; 57, sliding plate.

DETAILED DESCRIPTION

In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with Figures 1 to 9.

An embodiment provided by the present invention relates to a fully automatic belt sampling device, including a base 1 and a bucket 9, wherein a horizontal plate 5 is rotatably provided on the base 1, and a bucket 9 is rotatably provided at each end of the horizontal plate 5, and the lower parts of the two ends of the horizontal plate 5 are respectively used to correspondingly set a coal conveying mechanism and a detection mechanism, and also include a protection unit, wherein the protection unit includes a first elastic member 52 and a shovel head 51, and a U-shaped groove 53 is opened at the end of the bucket 9, and the shovel head 51 is slidably installed in the U-shaped groove 53, and the shovel head 51 and the inner wall of the U-shaped groove 53 are connected by the first elastic member 52.

Specifically, the belt automatic sampling device is a device that performs sampling operations on a coal conveying mechanism or a conveyor belt through a bucket 9. The coal conveying mechanism includes a belt 14, and the belt 14 is connected by two or more conveying rollers, so that the conveying roller can drive the belt 14 to convey materials (i.e., coal). Each conveying roller is rotatably installed on a frame, and the frame includes two symmetrically arranged straight plates 54, and the straight plates 54 are used to support the conveying rollers, the belt 14, and the materials conveyed on the belt 14. The base 1 is preferably a movable plate, and a first driving member 55 for rotational drive is provided on the base 1. A second driving member 56 for linear drive is provided at the output end of the first driving member 55, and a cross plate 5 is provided at the top of the second driving member 56. Two sampling units are symmetrically arranged at both ends of the cross plate 5, that is, a sampling unit is respectively arranged at both ends of the cross plate 5, and the sampling units at both ends of the cross plate 5 are exactly the same. The sampling unit includes a sliding plate 57, and two through grooves 15 are symmetrically opened at both ends of the cross plate 5, and a sliding plate 57 is slidably installed in each of the two through grooves 15, and two bottom ends of the two sliding plates 57 are symmetrically installed A support plate 7, that is, two support plates 7 are symmetrically arranged at the bottom end of a sliding plate 57, and a total of four support plates 7 are arranged on the two sliding plates 57. A bucket 9 is rotatably installed between the two support plates 7 of the same sliding plate 57 through a positioning shaft 25. A U-shaped groove 53 is opened at the end of the bucket 9. A shovel head 51 is slidably installed in the U-shaped groove 53. The shovel head 51 and the inner wall of the U-shaped groove 53 are connected by a plurality of uniformly arranged first elastic members 52. The two sliding plates 57 and the cross plate 5 are connected by a second elastic member 16. The two sliding plates 5 7, each of which is rotatably mounted with a plurality of third driving members 17, and the output end of each third driving member 17 is connected to the middle part of the bucket 9 in a rotatable manner; a protective box 3 is arranged on the base 1 on the outside of the first driving member 55, and the protective box 3 surrounds the first driving member 55; a fourth driving member 18 is also arranged on the base 1, and a flat plate is installed on the output end of the fourth driving member 18, an electronic scale is arranged on the flat plate, a mounting seat is arranged on the electronic scale, an electromagnet is arranged in the mounting seat, a sample box 13 is placed on the mounting seat, and the top of the sample box 13 is an open mouth.

Before the bucket 9 digs and samples the coal sample, the bucket 9 is driven by the base 1 and the cross plate 5 to move to the top of the belt 14. When the coal sample needs to be sampled, the fourth driving member 18 is started (the fourth driving member 18 is a component capable of linear reciprocating motion, preferably a hydraulic cylinder) to drive the flat plate and the electronic scale to move toward one end of the cross plate 5 (that is, upward movement). The flat plate and the electronic scale drive the mounting seat and the sample box 13 to move toward one end of the cross plate 5 until the top of the sample box 13 is at the same height as the top surface of the belt 14, that is, the top opening of the sample box 13 and the top height of the belt 14 are at the same height in the extension and contraction direction of the fourth driving member 18. For the convenience of description, the extension and contraction direction of the fourth driving member 18 is set to the vertical direction. At the same time, the conveying roller drives the belt 14 to operate, so that the belt 14 conveys the coal. The base 1 is moved to one side of the belt 14, so that one of the buckets 9 is aligned with the belt 14, and the second driving member 56 is started (the second driving member 56 is a component capable of linear reciprocating motion, preferably a hydraulic cylinder The hydraulic cylinder is selected to drive the cross plate 5 to move toward one end of the belt 14, and the cross plate 5 drives the sliding plate 57 and the support plate 7 to rotate toward one end of the belt 14. The support plate 7 drives the bucket 9 and the shovel head 51 to move toward one end of the belt 14 through the positioning shaft 25, until the shovel head 51 moves to a position where it abuts against the belt 14. At this time, each third driving member 17 on the same sliding plate 57 is simultaneously started (the third driving member 17 is a component capable of linear reciprocating motion, preferably a hydraulic cylinder) to drive the middle of the bucket 9 to The shovel head 51 rotates around the positioning shaft 25, so that the bucket 9 drives the shovel head 51 to rotate around the positioning shaft 25, so that the bucket 9 and the shovel head 51 perform excavation and sampling operations on the coal transported on the belt 14. Even if the second driving member 56 drives the bucket 9 to move excessively toward one end of the belt 14 (that is, when the bucket 9 moves toward one end of the belt 14, the bucket 9 and the belt 14 are pressed against each other, and at this time the shovel head 51 applies a certain extrusion force to the belt 14), since the shovel head 51 is slidably arranged in the U-shaped groove 53 on the bucket 9, and the shovel head 51 The shovel head 51 is connected to the inner wall of the U-shaped groove by a first elastic member 52 (the first elastic member 52 is a member capable of telescopic reset, preferably a spring), so that the shovel head 51 has a certain telescopic force, and the extrusion force of the shovel head 51 on the belt 14 is partially offset by the elastic force of the first elastic member 52, thereby reducing the extrusion force of the bucket 9 on the belt 14, and better elastically protecting the belt 14. When the bucket 9 and the shovel head 51 complete the sampling operation of the coal transported on the belt 14, the second driving member 56 drives the cross plate 5 to move away The horizontal plate 5 drives the sliding plate 57 and the support plate 7 to move away from the end of the belt 14, and the support plate 7 drives the bucket 9 and the shovel head 51 to move away from the end of the belt 14 through the positioning shaft 25, until the vertical height of the bucket 9 is higher than the vertical height of the straight plate 54. At this time, the first driving member 55 is started (the first driving member 55 is a component that can reciprocate at the output end, preferably a motor) to drive the second driving member 56 and the horizontal plate 5 to rotate 180 degrees, so that The bucket 9 loaded with coal (i.e., coal sample) moves to the top of the sample box 13, while the bucket 9 that has not yet been sampled moves to the top of the belt 14. The second driving member 56 is started to drive the sliding plate 57 and the support plate 7 to move toward one end of the belt 14 through the cross plate 5. The support plate 7 drives the bucket 9 loaded with coal sample and the shovel head 51 to move toward one end of the belt 14 and the sample box 13 through the positioning shaft 25 until one shovel head 51 (i.e., the shovel head 51 on the bucket 9 that has not yet been sampled) moves to the belt 14. The two buckets 10 abut against each other, and the bucket 9 filled with the coal sample moves to the top of the sample box 13 at the same time. The bucket 9 that has not yet taken a sample repeats the above operation, and the bucket 9 filled with the coal sample is driven by the third driving member 17 to rotate around the positioning shaft 25, so that the coal sample in the bucket 9 falls into the sample box 13. The above operation is repeated, and the coal sampling operation can be continuously performed. In addition, since the shovel head 51 at the end of the bucket 9 is movably connected, the shovel head 51 has a smaller squeezing force on the belt 14, which greatly reduces the frequency of damage to the belt 14.

The shortcoming of the prior art is that, due to the certain vibration effect of the coal conveying mechanism during the conveying process, the conveyed coal shows a segregation phenomenon in which small-sized coal is gathered at the bottom and large-sized coal is gathered at the top. Based on this, when the sampling machine is actually used, in order to make the sample representative, the sample is required to cover the vertical cross-section on the coal conveying mechanism, and it is required to shovel the complete part from top to bottom of the coal conveying mechanism from the bucket 9. As a result, when the bucket 9 is sampling the coal sample, the tip of the bucket 9 will abut against the belt 14 of the coal conveying mechanism, and the coal conveying mechanism will produce slight vertical vibrations during the conveying process, which causes the bucket 9 to be frequently squeezed on the belt 14, which can easily cause damage to the belt 14.

The beneficial effect of the embodiment of the present invention is that: the coal sample is taken through the bucket 9. Since a shovel head 51 is provided at the end of the bucket 9, and the shovel head 51 is connected to the U-shaped groove by the first elastic member 52, the shovel head 51 has a certain elasticity. Even if the shovel head 51 and the bucket 9 are pressed against the belt 14, the elastic force of the first elastic member 52 causes the shovel head 51 to shrink inside the bucket 9, thereby reducing the squeezing force of the shovel head 51 on the belt 14, thereby greatly reducing the frequency of damage to the belt 14.

Preferably, a plurality of circular grooves 19 are evenly formed at the bottom end of the base 1, a connecting round rod 20 is slidably installed in each of the circular grooves 19, the top of each connecting round rod 20 and the corresponding circular groove 19 are connected by a plurality of evenly arranged third elastic members 21, a U-shaped frame 22 is rotatably installed at the bottom end of each connecting round rod 20, and a roller 23 is rotatably installed on each of the U-shaped frames 22.

Specifically, when the base 1 needs to be pushed to move, the base 1 drives the roller 23 to roll through the connecting round rod 20 and the U-shaped frame 22. Since the connecting round rod 20 and the circular groove 19 are connected by the third elastic member 21 (the third elastic member 21 is a component that can be telescopically reset, preferably a spring), when the roller 23 drives the base 1 to move, it has a certain shock-absorbing effect, making the base 1 more stable when moving.

In another embodiment provided by the present invention, each of the support plates 7 is provided with an arc plate 24 at the bottom end, and the center of each of the arc plates 24 coincides with the center of the positioning shaft 25 between the corresponding support plates 7, that is, the center of each of the arc plates 24 is the same as the center of the positioning shaft 25, each of the arc plates 24 is provided with an arc-shaped through groove 26, the center of the arc-shaped through groove 26 is the same as the center of the positioning shaft 25, and the top of each of the arc-shaped through grooves 26 is provided with an expansion space 27, and an arc-shaped rack 28 is provided on the side wall of each of the arc plates 24 at the position of the expansion space 27, and each of the buckets 9 is rotatably provided with a transmission round rod at both ends. 29, a baffle 30 is installed on the part of the two transmission round rods 29 located between the buckets 9, that is, each end of the baffle 30 is connected to a transmission round rod 29, and both ends of each transmission round rod 29 pass through the bucket 9 and are slidably installed in the arc-shaped through-groove 26. Preferably, the parts of the two ends of each transmission round rod 29 located in the arc-shaped through-groove 26 are each installed with two protruding clamping rods 31, and each of the clamping rods 31 is clamped on the inner wall of the corresponding arc-shaped through-groove 26, and the end of each transmission round rod 29 passes through the arc-shaped through-groove 26 and is installed with a driving gear 32, and the driving gear 32 is meshed with the arc-shaped rack 28 for use.

Specifically, during the process in which the third driving member 17 drives the middle part of the bucket 9 to rotate around the positioning shaft 25: (1) when the bucket 9 has not yet started to excavate the coal sample, the opening of the bucket 9 faces the side of the belt 14. At this time, since the two abutting rods 31 on the transmission rod 29 abut against the inner wall of the arc-shaped groove 26, the baffle 30 is in a position perpendicular to the support plate 7; (2) when the bucket 9 and the shovel head 51 rotate around the positioning shaft 25, the opening of the bucket 9 performs an excavation and sampling operation on the coal, that is, the bucket 9 rotates toward the top side of the cross plate 5 until the opening of the bucket 9 is perpendicular to the support plate 7. During this process, the bucket 9 drives the transmission rod 29 to slide along the trajectory of the arc-shaped groove 26. Since the center of the arc plate 24 coincides with the center of the positioning shaft 25, the transmission rod 29 can slide smoothly along the trajectory of the arc-shaped groove 26. When the transmission rod 29 slides to the expansion space 27, the transmission rod 29 drives the driving gear 32 to align with the arc plate 24. The arc-shaped racks 28 are meshed with each other. Since the expansion space 27 is larger than other positions of the arc-shaped through grooves 26, the clamping rod 31 is no longer pressed against the inner wall of the expansion space 27, so that the clamping rod 31 is no longer restricted in rotation, but the driving gear 32 is meshed with the arc-shaped rack 28, so that the driving gear 32 drives the baffle 30 to slide toward one end of the inside of the bucket 9 through the transmission round rod 29, so that the baffle 30 blocks the opening of the bucket 9, so that the bucket 9 is rotated 180 degrees when the first driving member 55 drives the second driving member 56 and the cross plate 5, so that the bucket 9 filled with coal (that is, the coal sample) rotates to the top of the sample box 13, and the coal sample in the bucket 9 will not fall out of the bucket 9, so that the sampling operation of the bucket 9 for the coal sample is more uniform and stable, and the baffle 30 can move the coal on the belt 14 into the bucket 9 during the rotation process, and the baffle 30 has a certain guiding effect on the bucket 9 to shovel coal, thereby improving the balance of coal sampling.

The present invention provides another embodiment, in which a cross bar 33 is installed at the top of each sliding plate 57, and two vertically arranged extrusion rods 34 are symmetrically installed at both ends of each cross bar 33, and a semicircular groove is opened at the bottom of each extrusion rod 34, and an L-shaped groove 35 is opened on the two straight plates 54, one section of the L-shaped groove 35 is a vertical groove 36 which is perpendicular to the belt 14, and the other section of the L-shaped groove 35 is a horizontal groove 37 which is parallel to the belt 14, and a driven round rod 38 is slidably installed in each of the two L-shaped grooves 35, and the two driven round rods 38 are slidably installed in each of the two L-shaped grooves 35. The movable round rods 38 are connected by a rectangular frame 39, and the rectangular frame 39 is located between the two straight plates 54 and between the upper surface and the lower surface of the belt 14, that is, the rectangular space formed by the belt 14 and the two straight plates 54 is provided with a rectangular frame 39, and a lifting plate 40 is slidably installed in the rectangular frame 39, and a friction member 41 is provided at the top of the lifting plate 40, and the friction member 41 cooperates with the bottom surface of the belt 14. The two straight plates 54 and the bottom end of the L-shaped groove 35 are connected by a supporting plate 42, and the supporting plate 42 is provided at the bottom end of the L-shaped groove 35. The plate 42 is provided with a slide groove 43, in which an auxiliary plate 44 is slidably installed, and two first rotating plates 45 are symmetrically installed on the top of the auxiliary plate 44 in a rotationally matched manner, and two second rotating plates 46 are symmetrically installed on both sides of the bottom end of the lifting plate 40 in a rotationally matched manner. The first rotating plate 45 and the second rotating plate 46 located on the same side of the auxiliary plate 44 and the lifting plate 40 are rotatably connected by a pin shaft, and the two first rotating plates 45 and the two second rotating plates 46 are in a bent state under the gravity of the lifting plate 40, and the rectangular A triangular plate 47 is provided at the outer side of the two second rotating plates 46 at the bottom end of the frame 39, and the triangular plate 47 and the second rotating plate 46 are used in conjunction with each other. Two anti-fall plates 48 are symmetrically provided at the top of the auxiliary plate 44, and the two anti-fall plates 48 are abutted against the lifting plate 40. The lifting plate 40 and the auxiliary plate 44 are connected by a fourth elastic member 49. A fixed round rod is respectively provided on the side of the L-shaped groove 35 on the two straight plates 54, and the two driven round rods 38 and the corresponding fixed round rods are connected by a fifth elastic member 50.

Specifically, when the second driving member 56 drives the sliding plate 57 and the supporting plate 7 to move toward one end of the belt 14 through the cross plate 5, the supporting plate 7 drives the bucket 9 and the shovel head 51 to move toward one end of the belt 14 through the positioning shaft 25, the sliding plate 57 drives the cross bar 33 to move toward one end of the belt 14, the cross bar 33 drives the extruding rod 34 to move toward one end of the belt 14, the semicircular groove on the extruding rod 34 and the driven round rod 38 abut and cooperate with each other, so that the extruding rod 34 drives the driven round rod 38 to slide from the vertical groove 36 of the L-shaped groove 35 to one end of the horizontal groove 37, the driven round rod 38 drives the rectangular frame 39 to slide toward one end of the base 1, and the rectangular frame 39 drives the triangular plate 47 to slide toward one end of the base 1, because the two first rotating plates 45 and the two second rotating plates 46 are in a bent state under the gravity of the lifting plate 40, the triangular plate 47 and the rectangular frame 39 squeeze the two second rotating plates 46, so that the two first rotating plates 45 and the second rotating plates 46 are in a bent state under the gravity of the lifting plate 40, The two rotating plates 46 rotate toward one end close to each other. Since the first rotating plate 45 is supported by the auxiliary plate 44 and the anti-fall plate 48 supports the lifting plate 40 to a certain extent, the first rotating plate 45 also rotates accordingly, so that the combined length between the first rotating plate 45 and the second rotating plate 46 increases, so that the first rotating plate 45 and the second rotating plate 46 push the lifting plate 40 and the friction member 41 (there is a certain concave surface at the top of the friction member 41, which is used to increase the friction force of the friction member 41) to slide toward one end close to the belt 14. The rotational connection position of the first rotating plate 45 and the second rotating plate 46 is located in the rectangular frame 39. The lifting plate 40 stretches the fourth elastic member 49 (the fourth elastic member 49 is an original member that can be retracted and reset, preferably a spring), so that the fourth elastic member 49 is in a stretched state. When the shovel head 51 moves to a position where it abuts against the belt 14, the lifting plate 40 and the friction member 4 1 moves to a position where it is pressed against the belt 14. Under the action of the movement of the belt 14, the belt 14 and the friction member 41 are frictionally transmitted with each other, so that the belt 14 drives the friction member 41 and the lifting plate 40 to slide along the track of the horizontal groove 37 of the L-shaped groove 35 (that is, the belt 14 can drive the friction member 41 and the lifting plate 40 to move synchronously with the rotation of the belt 14). Since the lifting plate 40 is slidably installed in the rectangular frame 39, the lifting plate 40 drives the rectangular frame 39 and the driven round rod 38 to slide along the track of the horizontal groove 37 of the L-shaped groove 35, so that the driven round rod 38 squeezes the fifth elastic member 50 (the fifth elastic member 50 is an original member that can be telescopically reset, preferably a spring), so that the fifth elastic member 50 is in a compressed state. At the same time, the driven round rod 38 drives the extrusion rod 34 and the cross bar 33 to slide along the track of the horizontal groove 37 of the L-shaped groove 35. The extrusion rod 34 drives the sliding The movable plate 57 slides in the through groove 15, and the sliding plate 57 drives the support plate 7 and the bucket 9 to slide along the trajectory of the horizontal groove 37 of the L-shaped groove 35. At the same time, the first rotating plate 45 and the second rotating plate 46 drive the auxiliary plate 44 to slide along the trajectory of the slide groove 43, so that the bucket 9 can follow the movement of the belt 14 and move to a certain extent (the two are not completely synchronized, only the bucket 9 can move to a certain extent along the movement direction of the belt 14), preventing the bucket 9 from generating a large squeezing force on the belt 14 and causing damage to the belt 14, and the friction transmission between the friction member 41 and the belt 14 makes the moving speed between the friction member 41 and the belt 14 not consistent, so the friction member 41 has a certain moving vibration on the belt 14 when the belt 14 is running, so that the coal can better enter the bucket 9, and provide a certain vibration force for the bucket 9 to excavate the coal, so that the bucket 9 excavates the coal and samples it more evenly.

When the coal sampling is completed, the squeezing rod 34 no longer provides squeezing force on the driven round rod 38. Under the rebound action of the fifth elastic member 50, the driven round rod 38 slides from the horizontal groove 37 to the top position of the vertical groove 36. Under the rebound action of the lifting plate 40 on the fourth elastic member 49, the lifting plate 40 moves to a position abutting against the anti-fall plate 48, so that the two first rotating plates 45 and the two second rotating plates 46 are in a bent state, preparing for the next sampling of the bucket 9.

The present invention also provides a belt full-automatic sampling method, which is based on the above-mentioned belt full-automatic sampling device, and the belt full-automatic sampling method comprises the following steps:

1. Sorting operation: The minerals are sorted by the jig. The minerals are stratified by density and gravity in the jig, so that the low-density mineral particles are concentrated in the upper layer and the high-density mineral particles are concentrated in the bottom. They are discharged from the jig respectively to obtain products of different densities, such as coal and gangue;

2. Transportation operation: the medium coal and gangue fall into the belt conveyor, and the medium coal and gangue are transported by the belt conveyor;

3. Sampling operation: Sampling operation is carried out on medium coal and gangue. The medium coal and gangue are sampled separately by the above-mentioned belt automatic sampling device. The medium coal and gangue are transported to the online ash analyzer. The ash content value of the medium coal or gangue is obtained by the online ash analyzer, and the sampling and detection results of the medium coal and gangue are obtained.

The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims (5)

1. The full-automatic belt sampling device comprises a base and a bucket, wherein a transverse plate is rotatably arranged on the base, a bucket is rotatably arranged at each of two ends of the transverse plate, and a coal conveying mechanism and a detection mechanism are correspondingly arranged below each of two ends of the transverse plate;

the base is provided with a first driving piece;

The output end of the first driving piece is provided with a second driving piece, and the top end of the second driving piece is provided with a transverse plate;

Two sampling units are symmetrically arranged at two ends of the transverse plate, each sampling unit comprises a sliding plate, two through grooves are symmetrically formed in two ends of the transverse plate, a sliding plate is slidably arranged in each through groove, two supporting plates are symmetrically arranged at the bottom ends of the two sliding plates, and a bucket is rotatably arranged between the two supporting plates of the same sliding plate through a positioning shaft;

The two sliding plates and the transverse plate are connected through a second elastic piece;

A plurality of third driving parts are rotatably arranged on the two sliding plates respectively, and the output ends of the third driving parts are connected with the middle part of the bucket in a rotating fit mode;

An arc plate is arranged at the bottom end of each supporting plate, the circle centers of the arc plates are coincident with the circle centers of the positioning shafts between the supporting plates which are correspondingly arranged, namely, the circle centers of the arc plates are identical to the circle centers of the positioning shafts, arc-shaped penetrating grooves are formed in the arc plates, the circle centers of the arc-shaped penetrating grooves are identical to the circle centers of the positioning shafts, arc-shaped racks are arranged at the top ends of the arc-shaped penetrating grooves, a transmission round rod is rotatably arranged at the two ends of each bucket on the side wall of the arc plates, a baffle is arranged at the part, which is positioned between the buckets, of each transmission round rod, namely, two ends of each baffle are respectively connected with a transmission round rod, each transmission round rod penetrates through the bucket and is slidably arranged in each arc-shaped penetrating groove, two convex supporting rods are respectively arranged at the parts, which are positioned at the two ends of each transmission round rod in the arc-shaped penetrating groove, each supporting rod is tightly supported on the inner wall of each corresponding expansion space, each supporting rod is meshed with each arc-shaped gear, and each driving gear penetrates through each arc-shaped rack.

2. The belt full-automatic sampling device according to claim 1, wherein a protective box is arranged on the base and located on the outer side of the first driving piece, and the protective box surrounds the first driving piece.

3. The belt full-automatic sampling device according to claim 1, wherein a fourth driving piece is arranged on the base, a flat plate is arranged at the output end of the fourth driving piece, an electronic scale is arranged on the flat plate, a mounting seat is arranged on the electronic scale, an electromagnet is arranged in the mounting seat, and a sample box is arranged on the mounting seat.

4. The full-automatic belt sampling device according to claim 1, wherein a plurality of round grooves are uniformly formed in the bottom end of the base, a connecting round rod is slidably mounted in each round groove, the top ends of the connecting round rods are connected with the corresponding round grooves through a plurality of third elastic pieces which are uniformly arranged, a U-shaped frame is rotatably mounted at the bottom ends of the connecting round rods, and a roller is rotatably mounted on each U-shaped frame.

5. A belt full-automatic sampling method based on the belt full-automatic sampling device according to any one of claims 1 to 4, characterized in that the belt full-automatic sampling method comprises the following steps:

Sorting operation: the mineral is separated by a jigger, density gravity layering is completed in the jigger, so that low-density mineral particles are concentrated on the upper layer, high-density mineral particles are concentrated at the bottom, and the low-density mineral particles are respectively discharged from the jigger, so that coal and gangue in products with different densities are obtained;

conveying operation: the middle coal and the gangue fall into a belt conveyor, and conveying operation is carried out on the middle coal and the gangue through the belt conveyor;

sampling: and the middle coal and the gangue are sampled, the middle coal and the gangue are sampled respectively through the belt full-automatic sampling device, the middle coal and the gangue are conveyed into the online ash analyzer, ash values of the middle coal or the gangue are obtained through the online ash analyzer, and sampling detection results of the middle coal and the gangue are obtained.