A carriage material surface height detection device

Abstract

The utility model discloses a material surface height detection device for a carriage, comprising a sampling basket, a lifting drive mechanism, a sampling mechanism and a material surface detection mechanism, wherein the sampling basket is hung in the carriage, the lifting drive mechanism is arranged on the top of the carriage to drive the sampling basket to lift and lower along the carriage height, the sampling mechanism is arranged on the sampling basket to take samples at different material surface heights, and the material surface detection mechanism is arranged on the basket to detect the material surface height downward. The utility model drives the sampling basket to lift and lower along the carriage height through the lifting drive mechanism, and when the material surface detection mechanism detects that the sampling mechanism is in contact with the material surface, the sampling mechanism starts to take samples at different material surface heights, thereby improving the representativeness and accuracy of sampling, and avoiding the problem of empty sampling due to the sampling mechanism not being in contact with the material surface.

Description

Technical Field

[0001] The utility model relates to the technical field of material surface height detection, in particular to a vehicle compartment material surface height detection device. Background Art

[0002] The train automatic sampling machine is a special sampling equipment used by steel, coal and power enterprises to conduct quality inspection on incoming rail transport materials (ore, coal). It can automatically complete all the work of sampling point selection, sampling and unloading. Compared with manual sampling, sampling by sampling machine has many advantages such as safety, reliability, speed, standardization and random sampling points. Although the technology of domestic train automatic sampling machines is relatively mature and widely used, there is still a lot of room for improvement. For example, the accurate acquisition of the height of the material surface in the carriage (the loading height of the material in the carriage) is still ignored by most manufacturers.

[0003] The standard for fully automatic sampling on trains stipulates that each carriage must have no less than 3 points, of which the deep and shallow points are not subject to human intervention and are automatically controlled (randomly) by the sampling machine system, with the height of the carriage floor as the zero coordinate for reading. Affected by the uneven loading of the carriage (the carriage material is hump-shaped due to forklift loading, with the material layer thickness of more than 1 meter in some places, and only a dozen centimeters or even no material layer at all), if the height of the carriage floor (the distance from the train track to the carriage floor) is directly used as the zero coordinate (safe depth) to control the sampling depth distribution point, when the sampling head is distributed to places with thin material layers to sample shallow points or directly to places where there is no material, there may be a phenomenon of empty sampling of the sampling head (the sampling head does not enter the material layer and completes the sampling action in the air), thereby affecting the representativeness of the sampling (the number of sampling points and the total sample volume do not meet the national standard requirements), and then causing inaccurate sampling. Utility Model Content

[0004] The utility model aims to provide a vehicle compartment material surface height detection device which improves sampling representativeness and accuracy, so as to solve the problem of inaccurate sampling caused by the empty sampling phenomenon of the sampling head proposed in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for detecting the material surface height in a carriage comprises a sampling basket, a lifting drive mechanism, a sampling mechanism and a material surface detection mechanism, wherein the sampling basket is hung in the carriage, the lifting drive mechanism is arranged on the top of the carriage and is used to drive the sampling basket to rise and fall along the height of the carriage, the sampling mechanism is arranged on the sampling basket and is used to take samples at different material surface heights, and the material surface detection mechanism is arranged on the basket and is used to detect the height of the material surface downwards.

[0007] Preferably, the sampling mechanism includes a driving member, a transmission rod and a sampling head, the driving member is fixedly arranged on the top surface of the sampling basket, the top end of the transmission rod is connected to the driving member, and the bottom end of the transmission rod passes through the sampling basket and is downwardly connected to the sampling head facing the material surface.

[0008] Preferably, the driving member adopts a motor reducer, and the output shaft of the motor reducer is drivingly connected to the top end of the transmission rod.

[0009] Preferably, the material surface detection mechanism includes a detection rod and a proximity switch, the sampling basket is provided with a through hole running through the upper and lower surfaces thereof, the detection rod arranged parallel to the transmission rod is movably arranged in the through hole, and the proximity switch is arranged on the sampling basket for detecting the movement of the detection rod.

[0010] Preferably, the bottom end of the detection rod is flush with the bottom end of the sampling head.

[0011] Preferably, the detection rod passes through the top end of the sampling basket and is connected to a sensing block, and the width of the sensing block is larger than the diameter of the detection rod.

[0012] Preferably, the proximity switch is fixed to the side of the sensing block, and the detection end of the proximity switch is aligned with the side end of the sensing block.

[0013] Preferably, the lifting drive mechanism includes a lifting motor, a chain and a sprocket. The lifting motor is fixed on the top of the carriage. One end of the chain is wrapped around the output shaft of the lifting motor. The other end of the chain is wrapped downwardly around the sprocket and fixed upwardly to the top of the carriage. The sprocket is rotatably mounted on the sampling basket.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the sampling basket is driven to rise and fall along the height of the carriage by the lifting drive mechanism, and when the material surface detection mechanism detects that the sampling mechanism is in contact with the material surface, the sampling mechanism starts to take samples at different material surface heights, and at the same time, the height of the material in the carriage is accurately obtained through the detection rod. The sampling head will not be emptied due to uneven loading of the carriage, the sampling head descends to a place with a thinner material layer or directly to a place where there is no material, thereby improving the sampling representativeness and accuracy, and avoiding the problem of emptying the sampling head due to the sampling mechanism not being in contact with the material surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure when the sampling head of the utility model just contacts the material surface;

[0016] Figure 2 This is a structural schematic diagram of the sampling head of the utility model passing through the material surface to take materials at different depths.

[0017] The markings in the figure correspond to the following:

[0018] 1-sampling basket; 2-lifting drive mechanism; 21-lifting motor; 22-chain; 23-sprocket; 3-sampling mechanism; 31-driving member; 32-transmission rod; 33-sampling head; 4-material surface detection mechanism; 41-detection rod; 42-proximity switch; 43-sensing block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-2 A device for detecting the height of a material surface in a carriage comprises a sampling basket 1, a lifting drive mechanism 2, a sampling mechanism 3 and a material surface detection mechanism 4. The sampling basket 1 is hung in a carriage, and the carriage is filled with materials. The lifting drive mechanism 2 is arranged on the top of the carriage (not shown) and is used to drive the sampling basket 1 to rise and fall along the height of the carriage. The sampling mechanism 3 is arranged on the sampling basket 1 and is used to take samples at different material surface heights. The material surface detection mechanism 4 is arranged on the basket and is used to detect the height of the material surface downward.

[0021] In this embodiment, there are two lifting drive mechanisms 2, which are respectively arranged on both sides of the top of the carriage to drive the two ends of the sampling basket 1 to rise and fall synchronously. The lifting drive mechanism 2 includes a lifting motor 21, a chain 22 and a sprocket 23. The lifting motor 21 is fixed on the top of the carriage, one end of the chain 22 is wound around the output shaft of the lifting motor 21, and the other end of the chain 22 is wound downwardly through the sprocket 23 and fixed upwardly on the top of the carriage. The sprocket 23 is rotatably mounted on the sampling basket 1.

[0022] The lifting and lowering of the sampling basket 1 is achieved by the winding and releasing of the chain 22 by the lifting motor 21; when the lifting motor 21 rotates forward, the chain 22 is continuously unwound from the output shaft of the lifting motor 21, so that the chain 22 is continuously lengthened downward, and the sprocket 23 rotates under the drive of the chain 22 while driving the sampling basket 1 to descend; when the lifting motor 21 rotates reversely, the chain 22 is continuously wound around the output shaft of the lifting motor 21, so that the chain 22 is continuously shortened upward, and the sprocket 23 rotates under the drive of the chain 22 while driving the sampling basket 1 to rise.

[0023] See also Figure 1The sampling mechanism 3 includes a driving member 31, a transmission rod 32 and a sampling head 33. The driving member 31 is fixedly arranged on the top surface of the sampling basket 1, and the top of the transmission rod 32 is connected to the driving member 31. The bottom end of the transmission rod 32 passes through the sampling basket 1 and is downwardly connected to the sampling head 33 facing the material surface. In this embodiment, the driving member 31 adopts a motor reducer, and the output shaft of the motor reducer is connected to the top of the transmission rod 32 for driving the transmission rod 32 to rotate. The sampling head 33 at the bottom end of the transmission rod 32 drills into the material layer for sampling, which improves the material sampling efficiency and reduces the labor intensity of manual sampling.

[0024] The material surface detection mechanism 4 includes a detection rod 41 and a proximity switch 42. The sampling basket 1 is provided with a through hole penetrating the upper and lower surfaces thereof, and the detection rod 41 arranged parallel to the transmission rod 32 is movably arranged in the through hole. The proximity switch 42 is arranged on the sampling basket 1 to detect the movement of the detection rod 41. In this embodiment, the proximity switch 42 is linked to the PLC module of the sampling machine system to provide the system with a material surface sensing signal.

[0025] See also Figure 1 When the sampling head 33 is not in contact with the material surface, the bottom end of the detection rod 41 is flush with the bottom end of the sampling head 33.

[0026] The detection rod 41 passes through the top of the sampling basket 1 and is connected to a sensing block 43. The proximity switch 42 is fixed beside the sensing block 43, and the detection end of the proximity switch 42 is aligned with the side end of the sensing block 43. The width of the sensing block 43 is larger than the diameter of the detection rod 41, and is used to limit the detection rod 41 from falling downward.

[0027] The working principle of the vehicle compartment material surface height detection device of the utility model is: Figure 1 , the lifting drive mechanism 2 on both sides of the top of the carriage drives the sampling basket 1 together with the sampling mechanism 3 and the material surface detection mechanism 4 thereon to descend downward, at which time the bottom end of the detection rod 41 and the bottom end of the sampling head 33 remain at the same horizontal plane; when the sampling head 33 contacts the material surface, the detection rod 41 stops moving downward due to the resistance of the material surface. At this time, the system defaults the material surface height to the zero coordinate, and randomly generates the depth coordinates required for sampling for sampling. At the same time, the height of the carriage floor defaults to the safe depth; please refer to Figure 2 , then the sampling basket 1 continues to descend driven by the lifting drive mechanism 2, and the driving member 31 drives the sampling head 33 at the bottom end of the transmission rod 32 to rotate and drill into the material layer, and samples are taken at different depths of the material layer, thereby completing the sampling. It should be noted that the sampling depth must not be greater than the height of the carriage floor to avoid collision between the sampling head 33 and the carriage floor; during the sampling process, the sensing block 43 at the top of the detection rod 41 moves upward relative to the proximity switch 42 and begins to disengage from the proximity switch 42, and the bottom end of the detection rod 41 is no longer flush with the bottom end of the sampling head 33.

[0028] The detection device of the utility model can accurately obtain the height of the material in the car through the detection rod 41, and there will be no situation where the sampling head 33 is empty due to uneven loading of the car, the sampling head 33 descends and is distributed to a place with a thinner material layer, or is directly distributed to a place where there is no material. Because the bottom of the detection rod 41 is initially parallel to the sampling head 33, when the detection rod 41 does not sense the material surface, the system will not generate a sampling depth, and the sampling head 33 will not complete the sampling action; when the sampling head 33 descends to a safe depth and the detection rod 41 has not sensed the material surface, it means that there is no material in the area, and the system will automatically increase the sampling points and reallocate the sampling area for sampling, so that the sampling is more rigorous.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A carriage material surface height detection device, characterized in that: The invention comprises a sampling basket (1), a lifting drive mechanism (2), a sampling mechanism (3) and a material surface detection mechanism (4); the sampling basket (1) is suspended in a carriage; the lifting drive mechanism (2) is arranged on the top of the carriage and is used to drive the sampling basket (1) to be lifted and lowered along the height of the carriage; the sampling mechanism (3) is arranged on the sampling basket (1) and is used to take samples at different material surface heights; and the material surface detection mechanism (4) is arranged on the basket and is used to detect the height of the material surface downwards.

2. The carriage material surface height detection device according to claim 1 is characterized in that: The sampling mechanism (3) comprises a driving member (31), a transmission rod (32) and a sampling head (33); the driving member (31) is fixedly arranged on the top surface of the sampling basket (1); the top end of the transmission rod (32) is connected to the driving member (31); the bottom end of the transmission rod (32) passes through the sampling basket (1) and is downwardly connected to the sampling head (33) facing the material surface.

3. The carriage material surface height detection device according to claim 2 is characterized in that: The driving member (31) is a motor reducer, and the output shaft of the motor reducer is in driving connection with the top end of the driving rod (32).

4. The carriage material surface height detection device according to claim 2 is characterized in that: The material surface detection mechanism (4) comprises a detection rod (41) and a proximity switch (42); a through hole penetrating the upper and lower surfaces of the sampling basket (1) is provided; the detection rod (41) arranged parallel to the transmission rod (32) is movably arranged in the through hole; and the proximity switch (42) is arranged on the sampling basket (1) for detecting the movement of the detection rod (41).

5. The carriage material surface height detection device according to claim 4 is characterized in that: The bottom end of the detection rod (41) is flush with the bottom end of the sampling head (33).

6. The carriage material surface height detection device according to claim 4 is characterized in that: The detection rod (41) passes through the top end of the sampling basket (1) and is connected to a sensing block (43), and the width of the sensing block (43) is larger than the diameter of the detection rod (41).

7. The carriage material surface height detection device according to claim 6 is characterized in that: The proximity switch (42) is fixed on the side of the sensing block (43), and the detection end of the proximity switch (42) is aligned with the side end of the sensing block (43).

8. The carriage material surface height detection device according to any one of claims 1 to 7, characterized in that: The lifting drive mechanism (2) comprises a lifting motor (21), a chain (22) and a sprocket (23); the lifting motor (21) is fixed on the top of the carriage; one end of the chain (22) is wound around the output shaft of the lifting motor (21); the other end of the chain (22) is wound downwardly around the sprocket (23) and fixed upwardly on the top of the carriage; the sprocket (23) is rotatably mounted on the sampling basket (1).

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