Automatic sampling machine of scraper conveyor

Abstract

The invention provides an automatic sampling machine of a scraper conveyor, and relates to the technical field of coal sampling, the automatic sampling machine comprises a support and a material collecting box, the support is arranged on one side of the scraper conveyor, the material collecting box is arranged below the inner side of the support, a moving block is slidably arranged above the inner side of the support, an electric telescopic rod is arranged below the moving block, and the electric telescopic rod is arranged below the moving block. A sampling assembly is arranged at the output end of the electric telescopic rod, and an electric control box is arranged on the support. The electric cabinet time controller periodically controls the moving block to move, the electric telescopic rod to ascend and descend and the sampling assembly to operate, when sampling is needed, the moving block moves to the position above the scraper conveyor, the electric telescopic rod descends the sampling assembly, the opened sampling groove is inserted into a coal sample, the sampling groove is driven by the linkage arm unit to be closed for sampling, and the sampling efficiency is improved. And the coal samples are fed into the material collecting box through follow-up movement, reset and opening, the sampling task is completed, the sampling time interval can be freely set, and the labor intensity of workers is relieved.

Description

Technical Field

[0001] The invention relates to the technical field of coal sampling, in particular to an automatic sampler for a scraper conveyor. Background Art

[0002] The collection and preparation of coal samples is an important part of coal production. Sampling is the most critical step, used to guide production, control production indicators, and ensure product quality requirements. Incorrect sampling is difficult to detect, check, and remedy afterwards. In the prior art, coal preparation plant product inspection and testing can only be carried out by sampling after various clean coal products are mixed, and sampling is generally not allowed at transfer points such as conveyors. As a result, some sampling and preparation work cannot collect sub-samples, and the collected coal samples are not representative. No matter how accurate the subsequent sample preparation and testing are, they are useless and may even lead to wrong conclusions, causing quality imbalance of coal washing products. In order to change this situation, sampling workers are arranged at transfer points such as conveyors to conduct regular sampling. The labor intensity is high, and the sampling is not uniform, which affects subsequent testing. Therefore, the present invention proposes an automatic sampler for scraper conveyors to solve the problems existing in the prior art. Summary of the Invention

[0003] In response to the above problems, the present invention proposes an automatic sampler for a scraper conveyor, which periodically controls the movement of a moving block, the lifting of an electric telescopic rod, and the operation of a sampling assembly through a time controller in an electric control box. When sampling is required, the moving block moves to the top of the scraper conveyor, and the electric telescopic rod lowers the sampling assembly, so that the open sampling slot is inserted into the coal sample. The sampling slot is closed by a linkage arm unit for sampling, and subsequently moved and reset to open and send the coal sample into the aggregate box to complete the sampling task. The sampling time interval can be freely set, which reduces the labor intensity of employees.

[0004] To achieve the purpose of the present invention, the present invention is implemented through the following technical solutions: an automatic sampler for a scraper conveyor, comprising a bracket and an aggregate box, the bracket being arranged at one side of the scraper conveyor, the aggregate box being arranged below the inner side of the bracket, a moving block being slidingly provided on the upper inner side of the bracket, and an electric telescopic rod being provided below the moving block, a sampling assembly being provided at the output end of the electric telescopic rod, an electric control box being provided on the bracket, and a time controller being provided inside the electric control box, the time controller being used to periodically control the movement of the moving block, the lifting and lowering of the electric telescopic rod, and the operation of the sampling assembly, and the sampling is then sent to the aggregate box; The sampling assembly includes a linkage arm unit and a sampling slot. The sampling slots are provided in two groups adapted to each other. The linkage arm unit is used to control the two groups of sampling slots to open and close for sampling.

[0005] A further improvement is that a guide groove is provided on the upper inner side of the bracket, and the moving block is slidably installed in the guide groove.

[0006] A further improvement is that a threaded screw is provided for rotation inside the guide groove, and the threaded screw passes through the moving block and is threadedly adapted, a motor is provided above one side of the bracket, and the output end of the motor is connected to the threaded screw.

[0007] Further improvements are as follows: the linkage arm assembly includes a top frame, a support arm and a transfer frame, the support arm is rotatably arranged on both sides below the top frame, and both ends of the top of the two groups of sampling troughs are provided with axis plates, and the lower ends of the support arms on both sides are respectively hinged to the outer sides of the axis plates of the two groups of sampling troughs.

[0008] A further improvement is that hinge grooves are provided at both ends of the interior of the transfer rack, and the inner sides of the axis plates of the two groups of sampling grooves are hinged to the hinge grooves at both ends respectively.

[0009] A further improvement is that pneumatic cylinders are provided at both ends of the top of the transfer rack, and the output ends of the pneumatic cylinders are connected to the top rack.

[0010] A further improvement is that connecting rods are provided on the inner sides of the support arms on both sides, and multiple groups of connecting rods are equidistantly provided and are integrally formed with the support arms.

[0011] A further improvement is that the sampling trough is bucket-shaped, the inner side of the sampling trough is a sampling port, and the outer side of the sampling trough is welded with reinforcing ribs.

[0012] A further improvement is that the lower end of the bracket is supported on the ground, and the bracket and the ground are fixed by bolts.

[0013] Further improvements are: the electric control box is equipped with two operating modes: manual and automatic control. The electric control box is provided with a control panel, which is used for manual control through the control surface for speed regulation, maintenance and single-machine startup. The automatic control is based on the time controller, which performs periodic automatic sampling through the time controller.

[0014] The beneficial effects of the present invention are: 1. The present invention uses an electric control box time controller to periodically control the movement of the moving block, the lifting of the electric telescopic rod, and the operation of the sampling assembly. When sampling is required, the moving block moves to the top of the scraper conveyor, and the electric telescopic rod lowers the sampling assembly, so that the open sampling slot is inserted into the coal sample. The sampling slot is closed by the linkage arm unit for sampling, and then moved back to open and send the coal sample into the aggregate box to complete the sampling task. The sampling time interval can be freely set, which reduces the labor intensity of employees.

[0015] 2. When the sampling assembly of the present invention is used, the pneumatic cylinder pushes the transfer frame to rise and fall, and the two groups of sampling slots are opened or closed under the hinged linkage of the axis plate, the hinge slot and the support arm, so as to perform a sampling operation, clamp the sample, fill the interior of the sampling slot, and obtain a coal sample with a complete cross section. The sampling quality meets the standard requirements, avoids the problem of weak representativeness of the coal sample, reduces sampling errors, improves the qualified rate of clean coal products, and improves the economic benefits of the coal preparation plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the structure at A in the middle; Figure 3 Open the schematic diagram for the sampling assembly of the present invention; Figure 4 It is a closed schematic diagram of the sampling component of the present invention.

[0017] Among them: 1. Bracket; 2. Aggregate box; 3. Moving block; 4. Electric telescopic rod; 5. Electric control box; 6. Scraper conveyor; 7. Sampling trough; 8. Motor; 9. Top frame; 10. Support arm; 11. Transfer frame; 12. Axis plate; 13. Articulated slot; 14. Pneumatic cylinder; 15. Connecting rod. DETAILED DESCRIPTION

[0018] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the examples. The examples are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0019] Example 1 according to Figure 1 、 2 , 3, and 4, this embodiment proposes an automatic sampler for a scraper conveyor, comprising a bracket 1 and a collection box 2, wherein the bracket 1 is provided at one side of the scraper conveyor 6, and the collection box 2 is provided at the lower inner side of the bracket 1, and a moving block 3 is provided on the upper inner side of the bracket 1 for sliding, and an electric telescopic rod 4 is provided below the moving block 3, and a sampling component is provided at the output end of the electric telescopic rod 4, an electric control box 5 is provided on the bracket 1, and a time controller is provided inside the electric control box 5, and the time controller is used to periodically control the movement of the moving block 3, the lifting and lowering of the electric telescopic rod 4, and the operation of the sampling component, and the sampling is sent to the collection box 2; The sampling assembly includes a linkage arm unit and a sampling slot 7. The sampling slot 7 is provided with two groups adapted to each other. The linkage arm unit is used to control the opening and closing of the two groups of sampling slots 7 for sampling. During use, the time controller of the electric control box 5 periodically controls the movement of the moving block 3, the lifting and lowering of the electric telescopic rod 4, and the operation of the sampling assembly. When sampling is required, the moving block 3 moves above the scraper conveyor 6, and the electric telescopic rod 4 lowers the sampling assembly, so that the open sampling slot 7 is inserted into the coal sample. The sampling slot 7 is driven to close by the linkage arm unit for sampling, and then moved back to open and send the coal sample into the aggregate box 2 to complete the sampling task. The sampling time interval can be freely set, which reduces the labor intensity of employees.

[0020] A guide groove is provided above the inner side of the bracket 1, and the movable block 3 is slidably mounted within the guide groove. A threaded screw is provided within the guide groove, which extends through the movable block 3 and engages with the threaded screw. A motor 8 is provided above one side of the bracket 1, and the output end of the motor 8 is connected to the threaded screw. During operation, the motor 8 drives the threaded screw to rotate, causing the movable block 3 to move and change position along the guide groove, thereby changing the position of the sampling assembly. This facilitates sampling by the sampling assembly and also facilitates unloading of the coal sample to the electrical control box 5 after sampling.

[0021] The linkage arm assembly includes a top frame 9, a support arm 10, and a middle transfer frame 11. The support arm 10 is rotatably arranged on both sides below the top frame 9. Both ends of the top of the two groups of sampling troughs 7 are provided with an axis plate 12. The lower ends of the support arms 10 on both sides are respectively hinged to the outer sides of the axis plates 12 of the two groups of sampling troughs 7. Both ends of the inside of the middle transfer frame 11 are provided with a hinge groove 13. The inner sides of the axis plates 12 of the two groups of sampling troughs 7 are respectively hinged to the hinge grooves 13 at both ends. Both ends of the top of the middle transfer frame 11 are provided with a pneumatic cylinder 14, and the output end of the pneumatic cylinder 14 is connected to the top frame 9. When the sampling assembly is in use, the pneumatic cylinder 14 pushes the transfer frame 11 up and down, and the two groups of sampling slots 7 are opened or closed under the hinged linkage action of the axis plate 12, the hinge slot 13 and the support arm 10, so as to perform a sampling, clamp the sample, fill the interior of the sampling slot 7, and obtain a coal sample with a complete cross section. The sampling quality meets the standard requirements, avoids the problem of weak representativeness of the coal samples, reduces sampling errors, improves the qualified rate of clean coal products, and improves the economic benefits of the coal preparation plant.

[0022] The inner sides of the support arms 10 on both sides are provided with connecting rods 15, and the connecting rods 15 are provided in multiple groups at equal distances and are integrally formed with the support arms 10. Multiple groups of connecting rods 15 are connected to the inner sides of the support arms 10 for reinforcement, making the support arms 10 on both sides more solid and not easy to deform or break during long-term sampling.

[0023] The sampling trough 7 is bucket-shaped, with a sampling port located inside. Reinforcement ribs are welded to the outside of the sampling trough 7. Two sets of sampling troughs 7 are opened or closed to perform a single sampling operation. The sampling port is used to clamp the sample, filling the interior of the sampling trough 7 and obtaining a complete cross-section of the coal sample. The sampling quality meets standard requirements, avoiding the problem of poor representativeness of the sampled coal. The reinforcement ribs reinforce the outer surface of the sampling trough 7 to prevent deformation and cracking after long-term use.

[0024] The lower end of the bracket 1 is supported on the ground, and the bracket 1 and the ground are fixed by bolts. When in use, the bracket 1 is placed at a position where sampling is required on one side of the scraper conveyor 6, and the bracket 1 and the ground are fixed by bolts to improve stability.

[0025] Example 2 according to Figure 1 、 2 , 3, and 4, this embodiment proposes an automatic sampler for a scraper conveyor, comprising a bracket 1 and a collection box 2, wherein the bracket 1 is provided at one side of the scraper conveyor 6, and the collection box 2 is provided at the lower inner side of the bracket 1, and a moving block 3 is provided on the upper inner side of the bracket 1 for sliding, and an electric telescopic rod 4 is provided below the moving block 3, and a sampling component is provided at the output end of the electric telescopic rod 4, an electric control box 5 is provided on the bracket 1, and a time controller is provided inside the electric control box 5, and the time controller is used to periodically control the movement of the moving block 3, the lifting and lowering of the electric telescopic rod 4, and the operation of the sampling component, and the sampling is sent to the collection box 2; The sampling assembly includes a linkage arm unit and a sampling slot 7. The sampling slot 7 is provided with two groups adapted to each other. The linkage arm unit is used to control the opening and closing of the two groups of sampling slots 7 for sampling. During use, the time controller of the electric control box 5 periodically controls the movement of the moving block 3, the lifting and lowering of the electric telescopic rod 4, and the operation of the sampling assembly. When sampling is required, the moving block 3 moves above the scraper conveyor 6, and the electric telescopic rod 4 lowers the sampling assembly, so that the open sampling slot 7 is inserted into the coal sample. The sampling slot 7 is driven to close by the linkage arm unit for sampling, and then moved back to open and send the coal sample into the aggregate box 2 to complete the sampling task. The sampling time interval can be freely set, which reduces the labor intensity of employees.

[0026] A guide groove is provided above the inner side of the bracket 1, and the movable block 3 is slidably mounted within the guide groove. A threaded screw is provided within the guide groove, which extends through the movable block 3 and engages with the threaded screw. A motor 8 is provided above one side of the bracket 1, and the output end of the motor 8 is connected to the threaded screw. During operation, the motor 8 drives the threaded screw to rotate, causing the movable block 3 to move and change position along the guide groove, thereby changing the position of the sampling assembly. This facilitates sampling by the sampling assembly and also facilitates unloading of the coal sample to the electrical control box 5 after sampling.

[0027] The sampling trough 7 is bucket-shaped, with a sampling port located inside. Reinforcement ribs are welded to the outside of the sampling trough 7. Two sets of sampling troughs 7 are opened or closed to perform a single sampling operation. The sampling port is used to clamp the sample, filling the interior of the sampling trough 7 and obtaining a complete cross-section of the coal sample. The sampling quality meets standard requirements, avoiding the problem of poor representativeness of the sampled coal. The reinforcement ribs reinforce the outer surface of the sampling trough 7 to prevent deformation and cracking after long-term use.

[0028] The lower end of the bracket 1 is supported on the ground, and the bracket 1 and the ground are fixed by bolts. When in use, the bracket 1 is placed at a position where sampling is required on one side of the scraper conveyor 6, and the bracket 1 and the ground are fixed by bolts to improve stability.

[0029] The electric control box 5 is equipped with two operating modes: manual and automatic control. The electric control box 5 is provided with a control panel. Manual control is performed through the control surface for speed regulation, maintenance and single-machine startup. Automatic control is based on the time controller, and periodic automatic sampling is performed through the time controller. When starting, the time controller of the electric control box 5 periodically controls the movement of the moving block 3, the lifting and lowering of the electric telescopic rod 4, and the operation of the sampling assembly. When sampling is required, the moving block 3 moves to the top of the scraper conveyor 6, and the electric telescopic rod 4 lowers the sampling assembly so that the open sampling slot 7 is inserted into the coal sample. The sampling slot 7 is driven to close for sampling by the linkage arm unit, and subsequently moved and reset to open and send the coal sample into the aggregate box 2. After obtaining a complete cross-section of the coal sample, the time controller automatically controls the stop, completing the sampling process of a sub-sample. Multiple operating control modes make operation more convenient.

[0030] The scraper conveyor automatic sampling machine uses a time controller in the electric control box 5 to periodically control the movement of the moving block 3, the lifting of the electric telescopic rod 4, and the operation of the sampling assembly. When sampling is required, the moving block 3 moves to the top of the scraper conveyor 6, and the electric telescopic rod 4 lowers the sampling assembly, allowing the open sampling slot 7 to insert the coal sample. The sampling slot 7 is driven to close by the linkage arm unit for sampling, and then moved back to open and send the coal sample into the collection box 2 to complete the sampling task. The sampling time interval can be freely set, reducing the labor intensity of employees. When the sampling assembly is in use, the pneumatic cylinder 14 drives the transfer frame 11 to rise and fall. Under the articulated linkage action of the shaft plate 12, the hinge slot 13, and the support arm 10, the two sets of sampling slots 7 are opened or closed, and a sampling is performed. The sample is clamped and filled inside the sampling slot 7 to obtain a complete cross-section of the coal sample. The sampling quality meets the standard requirements, avoiding the problem of poor representativeness of the collected coal sample, reducing sampling errors, and improving the qualified rate of clean coal products, thereby improving the economic benefits of the coal preparation plant.

[0031] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic sampling machine for a scraper conveyor, comprising a bracket (1) and a collection box (2), characterized in that: The bracket (1) is provided at one side of the scraper conveyor (6), the aggregate box (2) is provided below the inner side of the bracket (1), a moving block (3) is provided on the upper side of the inner side of the bracket (1), and an electric telescopic rod (4) is provided below the moving block (3), and a sampling assembly is provided at the output end of the electric telescopic rod (4). An electric control box (5) is provided on the bracket (1), and a time controller is provided inside the electric control box (5). The time controller is used to periodically control the movement of the moving block (3), the lifting of the electric telescopic rod (4), and the operation of the sampling assembly, and the sampling is sent to the aggregate box (2); The sampling assembly comprises a linkage arm unit and a sampling slot (7), wherein the sampling slot (7) is provided with two groups adapted to each other, and the linkage arm unit is used to control the opening and closing of the two groups of sampling slots (7) for sampling.

2. The automatic sampling machine for scraper conveyor according to claim 1, characterized in that: A guide groove is provided above the inner side of the bracket (1), and the moving block (3) is slidably mounted in the guide groove.

3. The automatic sampling machine for scraper conveyor according to claim 2, characterized in that: A threaded screw is provided for rotation inside the guide groove, and the threaded screw passes through the moving block (3) and is threadably adapted. A motor (8) is provided above one side of the bracket (1), and the output end of the motor (8) is connected to the threaded screw.

4. The automatic sampling machine for scraper conveyor according to claim 1, characterized in that: The linkage arm assembly includes a top frame (9), a support arm (10) and a transfer frame (11), wherein the support arm (10) is rotatably arranged on both sides below the top frame (9), and both ends of the tops of the two groups of sampling troughs (7) are provided with shaft plates (12), and the lower ends of the support arms (10) on both sides are respectively hinged to the outer sides of the shaft plates (12) of the two groups of sampling troughs (7).

5. The automatic sampling machine for scraper conveyor according to claim 4, characterized in that: Both ends of the interior of the intermediate transfer rack (11) are provided with hinge grooves (13), and the inner sides of the axis plates (12) of the two groups of sampling slots (7) are hinged to the hinge grooves (13) at both ends respectively.

6. The automatic sampling machine for scraper conveyor according to claim 5, characterized in that: Both ends of the top of the intermediate transfer frame (11) are provided with a pneumatic cylinder (14), and the output end of the pneumatic cylinder (14) is connected to the top frame (9).

7. The automatic sampling machine for scraper conveyor according to claim 6, characterized in that: Connecting rods (15) are provided on the inner sides of the supporting arms (10) on both sides, and the connecting rods (15) are provided in multiple groups at equal intervals and are integrally formed with the supporting arms (10).

8. The automatic sampling machine for scraper conveyor according to claim 1, characterized in that: The sampling trough (7) is bucket-shaped, and the inner side of the sampling trough (7) is a sampling port, and the outer side of the sampling trough (7) is welded with reinforcing ribs.

9. The automatic sampling machine for scraper conveyor according to claim 1, characterized in that: The lower end of the bracket (1) is supported on the ground, and the bracket (1) and the ground are fixed by bolts.

10. The automatic sampling machine for scraper conveyor according to any one of claims 1 to 9, characterized in that: The electric control box (5) is equipped with two operating modes: manual and automatic control. The electric control box (5) is provided with a control panel. Manual control is performed through the control panel for speed regulation, maintenance and single machine start-up. Automatic control is based on the time controller, and periodic automatic sampling is performed through the time controller.

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