Full-depth bottom-touching rebound mechanism of coal sampling machine

Abstract

The utility model relates to a kind of full-depth bottom-touching rebound mechanism of coal sampling machine, it includes travelling trolley, the travelling trolley is connected with guide rail by bottom moving wheel, the travelling trolley inside is provided with lifting tackle, the lifting tackle includes lifting frame, the lifting frame top is provided with upper sprocket combination, the lifting frame bottom is provided with lower sprocket combination, the upper sprocket combination is driven by lifting motor, the lifting frame inside movably is provided with spiral cylinder, the spiral cylinder inside is provided with sampling drill rod, the spiral cylinder bottom is provided with spiral bottom head, the spiral cylinder upside is provided with discharge gate, the travelling trolley side is provided with strip frame, the strip frame outside is provided with induction mechanism;The device carries out comprehensive detection to sampling process, bottom-touching rebound mechanism fundamentally avoids the rigid collision of equipment and hard, greatly reduces derailment, damage and other mechanical failure rate, prolongs the equipment life.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal sampler, specifically relating to a full-depth bottom-reaching rebound mechanism for a coal sampler. Background Technology

[0002] Currently, enterprises using coal and ore as raw materials use fully automatic sampling machines for sampling during incoming material inspection. These fully automatic sampling machines use a spiral sampling shaft that penetrates deep into the material. A sampling cylinder is set outside the spiral sampling shaft, and the upper part of the sampling cylinder is equipped with a sample outlet and a residual material return outlet. During sampling, the spiral sampling shaft spirally conveys the material from the bottom to the top, and it comes out from the sample outlet on the sampling cylinder. Then it enters the subsequent crushing and reduction process to produce the required sample for analysis and testing.

[0003] Currently, the known bridge-type and gantry-type truck sampling machines have the following technical defects in sampling operations: Insufficient sampling depth: The sampling auger is limited by the bottom three-grip structure and cannot reach the bottom plate of the truck bed, resulting in the inability to collect low-quality coal and bottom coal at the bottom of the truck bed, and poor coal sample representativeness; High mechanical failure rate: During the sampling process, the auger drill bit is prone to collision with the tie rods, reinforcing plates or large hard objects in the truck bed, which may cause the sampling trolley to derail, the auger drill rod to deform or the drive mechanism to be damaged, resulting in low equipment reliability. Summary of the Invention

[0004] The purpose of this invention is to provide a full-depth bottom-reaching rebound mechanism for a coal-fired sampler, in order to solve the problems mentioned in the background art.

[0005] The purpose of this utility model is achieved as follows: a full-depth bottom-touching and rebound mechanism for a coal-fired sampler, comprising a traveling trolley, which is connected to a guide rail via bottom moving wheels. A lifting trolley is installed inside the traveling trolley, and the lifting trolley includes a lifting frame. An upper sprocket assembly is installed at the top of the lifting frame, and a lower sprocket assembly is installed at the bottom of the lifting frame. The upper sprocket assembly is driven by a lifting motor. A spiral cylinder is movably installed inside the lifting frame, and a sampling drill rod is installed inside the spiral cylinder. A spiral head is installed at the bottom of the spiral cylinder, and a discharge port is installed on the upper side of the spiral cylinder. A strip frame is installed on the side of the traveling trolley, and a sensing mechanism is installed on the outer side of the strip frame.

[0006] The spiral bottom includes grounding claws, which are evenly arranged at the bottom of the spiral cylinder. The grounding claws ensure that coal material at the bottom can be collected while also protecting the spiral bottom.

[0007] A reinforcing block is fixedly installed on the outside of the grounding claw. The grounding claw and the spiral cylinder are an integral structure. The reinforcing block strengthens the grounding claw and avoids the risk of the grounding claw coming into contact with foreign objects such as the tie rod.

[0008] The grounding claw is 5 cm high. Compared to the 25 cm height of traditional claws, the grounding claw of this device can effectively collect coal from the bottom, basically meeting the requirements for a flat surface.

[0009] The sensing mechanism includes a sliding seat, a locking block on the rear side of the sliding seat, and a horizontal plate on the front side of the sliding seat. A sensor is locked inside the horizontal plate, and a spring wire is provided on the upper side of the sensor. The spring wire is elastic, ensuring an effective connection between the sensor and the control system. A certain distance is typically maintained between the sensing head at the bottom of the sensor and the guide rail.

[0010] The frame has a vertical groove inside, and an adjusting screw is rotatably installed inside the vertical groove. The upper end of the adjusting screw is provided with a bolt head, and the moving seat is screwed to the adjusting screw through a locking block.

[0011] The horizontal plate has evenly spaced elongated slots inside, and the sensor is engaged and positioned within these slots. The sensor can move back and forth within the elongated slots.

[0012] The beneficial effects of this utility model are: The spiral bottom head includes grounding claws evenly arranged at the bottom of the spiral cylinder. This design allows the spiral bottom head to make better contact with the bottom of the coal seam, ensuring that the sampling drill rod can reach the bottom of the coal seam. The "flat-mouth spiral cylinder" design truly realizes full-depth and full-section sampling from the top of the carriage to the bottom plate. The collected coal samples can truly reflect the coal quality of the whole vehicle.

[0013] The sensing mechanism performs comprehensive detection of the sampling process, and the sensor monitors the position of the traveling trolley in real time. The bottom-bounce mechanism fundamentally avoids rigid collisions between the equipment and hard objects, greatly reducing the rate of mechanical failures such as derailment and damage, and extending the equipment's lifespan.

[0014] The sensing mechanism, through the cooperation of components such as a shifter, a locking block, and an adjusting screw, enables the vertical adjustment of the sensor's position. By rotating the bolt head, the adjusting screw rotates, and the shifter moves up and down along the vertical groove under the action of the locking block. This allows for flexible adjustment of the sensor's position according to actual sampling needs, improving the accuracy and adaptability of the sensing. Attached Figure Description

[0015] Figure 1 This is a front view of the traveling trolley portion of the full-depth bottom-touching and rebound mechanism of a coal-fired sampler according to this utility model.

[0016] Figure 2 This is a side view of the traveling trolley and guide rail of a full-depth bottom-touching and rebound mechanism for a coal-fired sampler according to this utility model.

[0017] Figure 3 This is a structural diagram of the lifting trolley of a coal sampling machine with a full-depth bottom-touching and rebound mechanism according to the present invention.

[0018] Figure 4 This is a diagram of the spiral bottom structure of a full-depth bottom-touching and rebound mechanism for a coal-fired sampler according to this utility model.

[0019] Figure 5 This is a structural diagram of the sensing mechanism of a coal-fired sampler with a full-depth bottom-touching and rebound mechanism according to the present invention.

[0020] Figure 6 This is a diagram of the shifting structure of a full-depth bottom-touching and rebound mechanism for a coal-fired sampler according to this utility model.

[0021] In the diagram: 1. Traveling trolley; 2. Moving wheels; 3. Lifting trolley; 4. Bar frame; 5. Sensing mechanism; 6. Guide rail; 7. Lifting frame; 8. Upper sprocket assembly; 9. Lower sprocket assembly; 10. Lifting motor; 11. Spiral cylinder; 12. Spiral bottom; 13. Discharge port; 14. Sampling drill rod; 15. Grounding claw; 16. Reinforcing block; 17. Vertical groove; 18. Adjusting screw; 19. Bolt head; 20. Moving seat; 21. Locking block; 22. Sensor; 23. Spring wire; 24. Horizontal plate; 25. Long groove. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Example 1 like Figure 1-3 As shown, a full-depth bottom-touching and rebound mechanism for a coal-fired sampler includes a traveling trolley 1, which is engaged with a guide rail 6 via bottom moving wheels 2. A lifting trolley 3 is installed inside the traveling trolley 1, and the lifting trolley 3 includes a lifting frame 7. An upper sprocket assembly 8 is installed at the top of the lifting frame 7, and a lower sprocket assembly 9 is installed at the bottom of the lifting frame 7. The upper sprocket assembly 8 is driven by a lifting motor 10. A spiral cylinder 11 is movably installed inside the lifting frame 7, and a sampling drill rod 14 is installed inside the spiral cylinder 11. A spiral head 12 is installed at the bottom of the spiral cylinder 11, and a discharge port 13 is installed on the upper side of the spiral cylinder 11. A strip frame 4 is installed on the side of the traveling trolley 1, and a sensing mechanism 5 is installed on the outer side of the strip frame 4.

[0024] Furthermore, the spiral bottom head 12 includes grounding claws 15, which are evenly arranged at the bottom of the spiral cylinder 11. This ensures that the sampling drill rod 14 can reach the bottom of the coal seam, achieving full-depth sampling and improving the integrity and representativeness of the sampling.

[0025] Furthermore, a reinforcing block 16 is fixedly provided on the outer side of the grounding claw 15.

[0026] Furthermore, the grounding claw 15 has a height of five centimeters.

[0027] In use, according to the sampling position requirements of the control system, the trolley 1 is driven to move on the guide rail 6 to reach the sampling area. The lifting motor 10 is started, which drives the upper sprocket assembly 8 to rotate, cooperating with the lower sprocket assembly 9 to drive the lifting frame 7 to descend. The spiral cylinder 11 and sampling drill rod 14 inside the lifting frame 7 gradually penetrate into the coal seam for sampling. The coal sample entering the spiral cylinder 11 is gradually transported to the discharge port 13 on the upper side of the spiral cylinder 11.

[0028] The current and torque of the drive motor on the upper side of the auger drum 11 are monitored in real time. When the sampling drill rod 14 reaches the bottom of the coal seam, the load torque will increase instantaneously when the drill bit contacts the floor of the carriage or an unbreakable hard object. When the torque value exceeds the preset safety threshold, the control system immediately triggers the "bottoming out and rebounding" command: first, the power supply to the drive motor on the upper side of the auger drum is cut off and braking is applied, and at the same time, the drive motor on the upper side of the auger drum is commanded to immediately reverse, raising the auger head 12 a safe distance. On the other hand, the reaction force of the auger head 12 upon bottoming out will cause the lifting frame 7 to drive the auger drum 11 and the sampling drill rod 14 to rebound upwards a certain distance, thereby driving the traveling trolley 1 to move upwards. At this time, the sensor 22 detects the change in the distance between itself and the guide rail 6, and then sends an alarm signal to the control system, which has a secondary braking effect.

[0029] Example 2 like Figure 1-6 As shown, a full-depth bottom-touching and rebound mechanism for a coal-fired sampler includes a traveling trolley 1, which is engaged with a guide rail 6 via bottom moving wheels 2. A lifting trolley 3 is installed inside the traveling trolley 1, and the lifting trolley 3 includes a lifting frame 7. An upper sprocket assembly 8 is installed at the top of the lifting frame 7, and a lower sprocket assembly 9 is installed at the bottom of the lifting frame 7. The upper sprocket assembly 8 is driven by a lifting motor 10. A spiral cylinder 11 is movably installed inside the lifting frame 7, and a sampling drill rod 14 is installed inside the spiral cylinder 11. A spiral head 12 is installed at the bottom of the spiral cylinder 11, and a discharge port 13 is installed on the upper side of the spiral cylinder 11. A strip frame 4 is installed on the side of the traveling trolley 1, and a sensing mechanism 5 is installed on the outer side of the strip frame 4.

[0030] Furthermore, the spiral bottom head 12 includes grounding claws 15, which are evenly arranged at the bottom of the spiral cylinder 11. This ensures that the sampling drill rod 14 can reach the bottom of the coal seam, achieving full-depth sampling and improving the integrity and representativeness of the sampling.

[0031] Furthermore, a reinforcing block 16 is fixedly provided on the outer side of the grounding claw 15.

[0032] Furthermore, the grounding claw 15 has a height of five centimeters.

[0033] Furthermore, the sensing mechanism 5 includes a sliding seat 20, a locking block 21 is provided on the rear side of the sliding seat 20, and a horizontal plate 24 is provided on the front side of the sliding seat 20. A sensor 22 is locked inside the horizontal plate 24, and a spring wire 23 is provided on the upper side of the sensor 22. The spring wire 23 has a certain elasticity and extensibility, and can automatically adapt to length changes during the adjustment of the sensor 22 position, avoiding wire tangling or damage from pulling.

[0034] Furthermore, the frame 4 has a vertical groove 17 inside, and an adjusting screw 18 is rotatably installed inside the vertical groove 17. The upper end of the adjusting screw 18 is provided with a bolt head 19, and the shift seat 20 is screwed to the adjusting screw 18 through a locking block 21.

[0035] Furthermore, the horizontal plate 24 is uniformly provided with elongated slots 25, and the sensor 22 is engaged and positioned with the elongated slots 25. This method is simple and reliable, ensuring the stable installation of the sensor 22 on the horizontal plate 24, preventing the sensor 22 from shaking or shifting during sampling, and ensuring accurate transmission of the sensing signal.

[0036] In another embodiment, the sensing mechanism 5 and the traveling trolley frame 4 are well-suited. Depending on the sensor model and sampling requirements, rotating the bolt head 19 drives the adjusting screw 18 to rotate. Since the shift seat 20 is screwed to the adjusting screw 18 via the locking block 21, the shift seat 20 moves up and down within the vertical slot 17, thereby adjusting the vertical position of the sensor 22 to a suitable sensing height. Simultaneously, different elongated slots 25 can be selected for sensor 22 installation according to actual conditions, and the horizontal position of the sensor 22 can be fine-tuned within the elongated slots 25 of the horizontal plate 24 to ensure accurate sensing of relevant information. The sensor 22 can be adjusted in all directions (up, down, left, right, forward, backward) within the sensing mechanism 5, demonstrating good applicability.

Claims

1. A full-depth bottom-touching and rebound mechanism for a coal-fired sampler, comprising a traveling trolley, the traveling trolley being engaged with a guide rail via bottom moving wheels, characterized in that: The traveling trolley is equipped with a lifting trolley, which includes a lifting frame. The top of the lifting frame is equipped with an upper sprocket assembly, and the bottom of the lifting frame is equipped with a lower sprocket assembly. The upper sprocket assembly is driven by a lifting motor. A spiral cylinder is movably installed inside the lifting frame. A sampling drill rod is installed inside the spiral cylinder. A spiral head is installed at the bottom of the spiral cylinder. A discharge port is installed on the upper side of the spiral cylinder. A strip frame is installed on the side of the traveling trolley, and a sensing mechanism is installed on the outer side of the strip frame.

2. The full-depth bottom-touching and rebound mechanism for a coal-fired sampler according to claim 1, characterized in that: The spiral bottom includes grounding claws, which are evenly arranged at the bottom of the spiral cylinder.

3. The full-depth bottom-touching and rebound mechanism for a coal-fired sampler according to claim 2, characterized in that: A reinforcing block is fixedly installed on the outside of the grounding claw.

4. The full-depth bottom-touching and rebound mechanism for a coal-fired sampler according to claim 3, characterized in that: The grounding claw is five centimeters high.

5. The full-depth bottom-touching and rebound mechanism for a coal-fired sampler according to claim 1, characterized in that: The sensing mechanism includes a sliding seat, a locking block is provided on the rear side of the sliding seat, a horizontal plate is provided on the front side of the sliding seat, a sensor is locked inside the horizontal plate, and a spring wire is provided on the upper side of the sensor.

6. The full-depth bottom-touching and rebound mechanism for a coal-fired sampler according to claim 5, characterized in that: The frame has a vertical groove inside, and an adjusting screw is rotatably installed inside the vertical groove. The upper end of the adjusting screw is provided with a bolt head, and the moving seat is screwed to the adjusting screw through a locking block.

7. The full-depth bottom-touching and rebound mechanism for a coal-fired sampler according to claim 6, characterized in that: The inside of the horizontal plate is evenly provided with long grooves, and the sensor is engaged and positioned with the long grooves.

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