Grounding rebound twist drill sampling equipment

Abstract

The utility model relates to grounding rebound twist drill sampling equipment which comprises a lifting frame, a trolley and twist drill limiting rollers, a motor drives the trolley to move back and forth on a track of a cart, a first roller set and a second chain wheel set are installed on the upper portion and the lower portion of the lifting frame respectively, and twist drill lifting sliding rails are vertically installed on the two sides of the inner side of the lifting frame. A chain upper connecting end and a chain lower connecting end are fixedly installed on the two sides of a sampling twist drill and a division cylinder of the twist drill assembly respectively, and a roller is installed at the end of the chain upper connecting end through a rotating shaft and moves back and forth in a twist drill lifting sliding rail. According to the spiral drill assembly, the material returning groove is additionally arranged, dust raising can be effectively prevented, the tension sensor is arranged at the lower connecting end of the chain of the spiral drill assembly, the tension change is sensed in time, the spiral drill assembly is prevented from being damaged, and the service life of the spiral drill assembly is prolonged. And when the tension is suddenly increased to a set value, the machine is stopped in time, so that the sampling head drill tip can be effectively prevented from penetrating through the vehicle bottom.

Description

Technical Field

[0001] This utility model relates to coal sample sampling equipment, specifically a bottom-bounce spiral drilling sampling equipment. Background Technology

[0002] To determine coal quality, coal samples are typically taken after loading. Current auger sampling devices collect a large number of samples during the sampling process, which may contain materials of varying compositions and properties. To ensure that the collected samples are representative of the overall material, a reduction process is required. During this reduction process, only a portion of the material is sampled, while the majority needs to be returned to the truck. This process generates a significant amount of coal dust, impacting the environment and the health of workers.

[0003] Currently, a utility model patent with publication number CN212903992U discloses a spiral sampling head that automatically rebounds upon bottoming out. This effectively avoids the risk of the spiral drill bit accidentally sampling the reinforcing bars, sides, or bottom plates of vehicles during the sampling process of bulk materials transported by automobiles and trains, ensuring the service life of the equipment and improving safety. The device includes a lifting mechanism, a spiral drill cylinder, a tension sensor, a transmitter, a control module, and an execution module. The upper and lower halves of the spiral drill cylinder are respectively provided with an upper traction plate and a lower traction plate. The lifting mechanism includes a chain and a power device that drives the chain. One end of the chain is connected to the upper traction plate, and the other end of the chain is connected to the lower traction plate through a tension sensor. The tension sensor is connected to the transmitter via a signal. The transmitter and the execution module are both connected to the control module via a signal. The execution module is electrically connected to the power device.

[0004] As can be seen from the above-disclosed technical content, although the utility model with announcement number CN212903992U can effectively prevent the sampling head drill tip from penetrating the bottom of the car, the reinforcing bars, the sides of the car, etc., as it is existing technology, it does not have the function of material reduction. This will result in too many coal samples being collected and unevenly distributed. At the same time, the returned material will fall directly from the trough, causing a lot of dust. It is not suitable for coal sample collection in coal mines. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a bottom-bounce spiral drill sampling device, which can effectively prevent dust and prevent the sampling head tip from penetrating the bottom of the vehicle.

[0006] To achieve the above objectives, this utility model discloses a bottom-bounce auger sampling device, comprising a lifting frame, a trolley, and auger limiting rollers. A motor drives the trolley to move back and forth on the track of the main trolley. The trolley is mounted on the lifting frame. Roller assembly one and sprocket assembly two are respectively installed on the upper and lower parts of the lifting frame. Aauger lifting slide rail is vertically installed on both sides of the inner side of the lifting frame. The sampling auger and the reducing cylinder of the auger assembly have an upper chain connection end and a lower chain connection end fixedly installed on both sides. A roller is mounted on the upper chain connection end via a rotating shaft. The roller moves back and forth within the auger lifting slide rail. The upper chain connection end passes around the roller assembly via a chain. The tension sensor at the lower end of the chain is connected to the first and second sprocket sets. The ratchet assembly lifting drive motor drives the second sprocket set. The top of the sampling auger is connected to the reducer inside the reducing cylinder. The auger drive motor is fixedly installed on the top of the reducing cylinder. The auger drive motor drives the sampling auger through the rotating shaft. The first dispensing end of the reducing cylinder is aligned with the inlet of the sample collection trough. The top of the trough-shaped return trough is sleeved with the second dispensing end of the reducing cylinder. The lower end of the return trough is fixedly connected to the lifting frame. The bottom of the lifting frame is equipped with three or four auger limit rollers arranged around the sampling auger. The opening of the return trough facing the sampling auger is equipped with a liftable rubber curtain.

[0007] In addition, the bottom-bounce spiral drilling sampling device proposed in the above embodiments of this utility model may also have the following additional technical features:

[0008] As a further improvement of this utility model, the opening of the return trough facing the sampling auger is fitted with a liftable rubber curtain via a slide rail or guide shaft, and the top of the rubber curtain is connected to the second material distribution end.

[0009] As a further improvement of this utility model, the lower end of the return trough is provided with a rubber enclosure.

[0010] As a further improvement of this utility model, a rain shelter is installed on the top of the lifting frame.

[0011] As a further improvement of this utility model, the surface of the spiral drill limiting roller is wrapped with rubber.

[0012] By means of the above solution, this utility model has at least the following advantages: compared with conventional auger drills, by adding a return chute, dust can be effectively prevented; by setting a tension sensor at the lower connection end of the chain of the auger drill assembly, changes in tension can be detected in time, and the machine can be stopped in time when the tension suddenly increases to the set value, which can effectively prevent the sampling head drill tip from penetrating the bottom of the vehicle. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of a bottom-bounce spiral drilling sampling device;

[0014] Figure 2This is a 3D view of the auger assembly of the bottom-bounce auger sampling equipment;

[0015] Figure 3 yes Figure 2 A magnified view of a portion of A;

[0016] Figure 4 This is a three-dimensional view of the rubber curtain of the return trough of the bottom-bounce spiral drilling sampling equipment being lifted by the second distribution end;

[0017] In the diagram: 1. Lifting frame, 2. Trolley, 3. Roller assembly 1, 4. Spiral drill assembly, 41. Sampling spiral drill, 42. Dividing cylinder, 421. Distributing end 1, 422. Distributing end 2, 43. Return chute, 431. Rubber curtain, 44. Upper connection end of chain, 45. Spiral drill drive motor, 46. Lower connection end of chain, 5. Sample collection trough, 6. Spiral drill lifting slide rail, 7. Sprocket assembly 2, 8. Ratchet assembly lifting drive motor, 9. Spiral drill limit roller. Detailed Implementation

[0018] The bottom-bounce spiral drilling sampling device of this utility model is described below with reference to the accompanying drawings.

[0019] In Embodiment 1 of this application, as Figures 1 to 3As shown, this bottom-bounce auger sampling device (hereinafter referred to as "the present invention") includes a lifting frame 1, a trolley 2, a roller assembly 3, an auger assembly 4, a sampling auger 41, a reducing cylinder 42, a distributing end 1 421, a distributing end 2 422, a return trough 43, a rubber curtain 431, an upper chain connection end 44, an auger drive motor 45, a lower chain connection end 46, a sample collection trough 5, an auger lifting slide rail 6, a sprocket assembly 2 7, a ratchet lifting drive motor 8, and an auger limiting roller 9. The motor drives the trolley 2 to move back and forth on the track of the trolley. The trolley 2 is mounted on the lifting frame 1. The upper and lower parts of the lifting frame 1 are respectively equipped with roller assembly 3 and sprocket assembly 2 7. The auger lifting slide rail 6 is vertically installed on both sides of the inner side of the lifting frame 1. The sampling auger 41 and the reducing cylinder 42 of the auger assembly 4 are respectively fixedly installed with the upper chain connection end 44 and the lower chain connection end 46. A roller is installed at the end of the connecting end 44 via a rotating shaft. The roller moves back and forth within the auger lifting slide rail 6. The connecting end 44 on the chain passes through the first roller group 3 and the second sprocket group 7 and is connected to the tension sensor at the lower connecting end 46 of the chain. The ratchet group lifting drive motor 8 drives the second sprocket group 7. The top of the sampling auger 41 is connected to the reducer inside the reducing cylinder 42. The auger drive motor 45 is fixedly installed on the top of the reducing cylinder 42. The auger drive motor 45 drives the sampling auger 41 via a rotating shaft. The first distributing end 421 of the reducing cylinder 42 is aligned with the inlet of the sample collection trough 5. The top of the trough-shaped return trough 43 is sleeved with the second distributing end 422 of the reducing cylinder 42. The lower end of the return trough 43 is fixedly connected to the lifting frame 1. The bottom of the lifting frame 1 is provided with three or four auger limiting rollers 9 arranged around the sampling auger 41. The opening of the return trough 43 facing the sampling auger 41 is equipped with a liftable rubber curtain 431.

[0020] The utility model patent CN212903992U describes a spiral sampling head with automatic bottom rebound (hereinafter referred to as "the patent"). Although the patent can effectively prevent the sampling head tip from penetrating the bottom of the vehicle, such as the reinforcing bars or sides, the patent itself does not have a material reduction function. This will result in too many coal samples being collected and unevenly distributed. At the same time, the returned material will fall directly from the trough, causing a large amount of dust. It is not suitable for coal sample collection in coal mines. The present invention can effectively prevent dust by adding a return trough (43). At the same time, with the help of the reduction cylinder 42 built-in reduction device, the material can be automatically reduced to ensure that the collected sample can represent the whole material.

[0021] This second embodiment is basically the same in structure as the first embodiment, except that the opening of the return material trough 43 facing the sampling auger 41 is fitted with a liftable rubber curtain 431 via a slide rail or guide shaft, and the top of the rubber curtain 431 is connected to the second material distribution end 422. The slide rail or guide shaft allows the rubber curtain 431 to be automatically folded during lifting, ensuring that the return material trough 43 remains unobstructed.

[0022] To further optimize the working efficiency of this application and to further reduce dust, a rubber baffle is provided at the lower end of the return chute 43. To extend the service life of the equipment, a rain shelter is installed on the top of the lifting frame 1. To reduce vibration and noise during equipment operation, the surface of the spiral drill limiting roller 9 is covered with rubber.

[0023] When in use, simply install the bottom-reaching rebound auger sampling equipment and connect it to the corresponding wiring equipment to put it into operation.

[0024] When this utility model is used, its specific operation is as follows:

[0025] In use, the trolley 2 moves along the track on the truck to the sampling point on the truck bed. Then, the ratchet assembly lifting drive motor 8 drives the sprocket assembly 7 to rotate. The sprocket assembly 7 drives the chain to rotate, and the rotating chain causes the auger assembly 4 to descend along the auger lifting slide rail 6. During descent, the rollers at the connecting end 44 on the chain, located in the auger lifting slide rail 6, and the auger limiting rollers 9 ensure the stable lifting and lowering of the sampling auger 41 of the auger assembly 4. When the sampling auger 41 descends, the second distributing end 422 also presses down and descends along the preset semi-through groove of the return chute 43. When the second distribution end 422 descends, the compressed rubber curtain 431 contracts. At the same time, the auger drive motor 45 drives the sampling auger 41 to drill for samples. The drilled samples are transported to the reducer in the reducing cylinder 42 for reduction. Part of the sample enters the first distribution end 421, and the other part enters the second distribution end 422 and falls into the return trough 43. Finally, it falls back into the hopper from the opening at the lower end of the return trough 43. Since the return trough 43 is close to the hopper, the dust generated when the material falls is completely isolated by the return trough 43 and the rubber curtain 431, effectively reducing dust during sampling. When the lower end of the sampling auger 41 touches the bottom, a tension sensor is installed at the lower connection end 46 of the chain of the auger assembly 4 to detect changes in tension in a timely manner. When the tension is lower than the threshold, the machine stops automatically, and the ratchet group lifts and drives the motor 8 to rotate in the opposite direction. The auger assembly 4 is lifted again through the roller group 3, the sprocket group 7 and the chain. When the shrinking drum 42 is lifted, the second material distribution end 422 drives the rubber curtain 431 to slide upward to ensure that the return trough 43 is completely closed.

[0026] In summary, the bottom-bounce spiral drilling sampling device of this utility model can effectively prevent dust by adding a return trough 43. By setting a tension sensor at the lower connection end 46 of the spiral drilling assembly 4 chain, it can detect changes in tension in a timely manner and stop the machine in time when the tension suddenly increases to the set value, which can effectively prevent the sampling head drill tip from penetrating the bottom of the vehicle.

[0027] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A bottom bounce auger sampling apparatus comprising a riser (1) and a trolley (2), a motor driving the trolley (2) to move back and forth on the track of the trolley, characterized in that, The trolley (2) is installed on the lifting frame (1), the lifting frame (1) is respectively installed with the roller group one (3) and the chain wheel group two (7) on the upper and lower parts, the lifting frame (1) is vertically installed with the auger lifting slide rail (6) on the two sides of the inner side, the sampling auger (41) and the reducing barrel (42) of the auger assembly (4) are respectively fixedly installed with the upper chain connecting end (44) and the lower chain connecting end (46) on the two sides, the upper chain connecting end (44) is installed with the roller through the rotating shaft at the end, the roller moves back and forth in the auger lifting slide rail (6), the upper chain connecting end (44) is connected with the tension sensor of the lower chain connecting end (46) through the chain around the roller group one (3) and the chain wheel group two (7), the ratchet group lifting drive motor (8) drives the chain wheel group two (7), the top end of the sampling auger (41) is communicated with the reducing device in the reducing barrel (42), the auger drive machine (45) is fixedly installed on the top of the reducing barrel (42), the auger drive machine (45) drives the sampling auger (41) through the rotating shaft, the material distribution end one (421) of the reducing barrel (42) is aligned with the feeding port of the sample aggregate groove (5), the top end of the groove-shaped return groove (43) is sleeved with the material distribution end two (422) of the reducing barrel (42), the lower end of the return groove (43) is fixedly connected with the lifting frame (1), the bottom of the lifting frame (1) is provided with three or four auger limiting rollers (9) arranged around the sampling auger (41), the opening of the return groove (43) on the side facing the sampling auger (41) is installed with the liftable rubber curtain (431).

2. The bottom bounce auger sampling apparatus of claim 1, wherein, The opening of the return groove (43) on the side facing the sampling auger (41) is installed with the liftable rubber curtain (431) through the slide rail or the guide shaft, and the top end of the rubber curtain (431) is connected with the material distribution end two (422).

3. The bottom bounce auger sampling apparatus of claim 2, wherein, The lower end of the return groove (43) is provided with a rubber fence.

4. The bottom bounce auger sampling apparatus of claim 1, wherein, The top of the lifting frame (1) is installed with a rain shelter.

5. The bottom bounce auger sampling apparatus of claim 4, wherein, The surface of the auger limiting roller (9) is wrapped with rubber. The surface of the auger limiting roller (9) is wrapped with rubber.

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