Coal surface detection device and sampling device
By installing the coal surface detection device of elastic components and detection components on the sampling head, the problem of inaccurate coal surface height detection in the prior art is solved by using the elastic component deformation and the contact signal of the counterweight block, and the coal sample volume calculation is realized and precise control of sample preparation ratio.
Patent Information
- Application Number
- CN202420095066.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-12
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-01-12
AI Technical Summary
The existing coal surface detection device cannot accurately detect the coal surface height, resulting in uncertain sampling volume, affecting the representativeness of coal samples and the accuracy of sample preparation.
Design a coal surface detection device including a mounting frame, elastic components, connectors and detection components. The coal surface height is detected by the deformation of the elastic components, and the physical contact and signal conversion of the counterweight block and detection components are used to calculate the sampling head drop height. To obtain the exact height of the coal surface.
Accurate detection of coal surface height is achieved, ensuring that the coal sample volume at each sampling point is accurately calculated, and providing more accurate data support for subsequent sample reduction ratios.
Smart Images
Figure CN222279700U_ABST
Abstract
Description
Technical Field
[0001] The utility model mainly relates to the technical field of sampling detection, in particular to a coal surface detection device and a sampling device. Background Art
[0002] In order to control the quality of coal, it is usually necessary to sample, prepare and test the coal to know the quality of the coal sample. In the prior art, coal sampling includes car sampling, train sampling, etc. Taking car sampling as an example, after the coal car is loaded with coal, the coal surface will be uneven. The sampling device needs to collect representative coal samples that meet national standards from the coal transport car in order to monitor the quality of the coal sample and price. However, most of the current sampling devices do not have the coal surface detection function, that is, the sampling head does not know the height of the coal surface in the coal transport car during the lifting and sampling process. If the height of the coal surface is not detected, the following problems will occur:
[0003] (1) The sampling device does not know the sampling volume. If three points are sampled on a coal truck, the sum of the coal sample volumes at the three sampling points is also unclear. There are risks of empty sampling and insufficient sampling volume, and it is impossible to obtain accurate and representative coal samples.
[0004] (2) The sampling volume of the sampling device is unclear, so the reduction ratio in the subsequent sample preparation process cannot be accurately set. Samples can only be prepared using a fixed reduction ratio. The amount of sample retained after each sample preparation is uneven, and the representativeness of the sample preparation is inaccurate.
[0005] In the prior art, some practitioners have designed coal surface detection devices, which indirectly obtain the coal surface height by detecting the current of the lifting drive motor of the sampling head. However, this method still has defects. Since the current of the lifting drive motor is relatively large, when the coal surface is relatively soft, the current change is not obvious when the sampling head just contacts the soft coal surface. When the current monitor detects the current change, the sampling head has entered a certain height of the coal seam. This height value is uncertain each time the sampling is performed, resulting in the detected coal surface height being generally lower than the actual coal surface height, and there is a deviation in the detection accuracy. Utility Model Content
[0006] In view of the technical problems existing in the prior art, the utility model provides a coal surface detection device and a sampling device which have a simple structure and can directly detect the coal surface height and produce more accurate and reliable detection results.
[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0008] A coal surface detection device is used to be installed on a sampling head, comprising a mounting frame, an elastic component, a connecting piece, a counterweight block and a detection component. The elastic component, the connecting piece and the counterweight block are installed on the sampling head via the mounting frame, the elastic component is connected to the counterweight block via the connecting piece, and the detection component is used to detect whether the elastic component is deformed.
[0009] As a further improvement of the utility model: the elastic component includes a guide pin and a spring, the spring is sleeved on the guide pin, and the bottom of the guide pin is connected to the counterweight block through a connecting piece.
[0010] As a further improvement of the present invention: the detection component is any one of a micro switch, a proximity switch or a photoelectric switch.
[0011] As a further improvement of the utility model: the spring is one of a compression spring, a tension spring or a torsion spring.
[0012] As a further improvement of the utility model: the connecting piece is a rope structure.
[0013] As a further improvement of the utility model: the rope structure is a steel wire rope.
[0014] The utility model also provides a sampling device, including a driving motor, a sampling head and the coal surface detection device as described above, wherein the coal surface detection device is installed on the sampling head, the driving motor drives the sampling head to move up and down, and the coal surface detection device moves up and down with the sampling head.
[0015] As a further improvement of the utility model: the position of the counterweight block is higher than the bottom end of the sampling head.
[0016] As a further improvement of the utility model: the driving motor is provided with a detector for detecting the lifting height value of the sampling head.
[0017] As a further improvement of the present invention: the detector is an encoder.
[0018] Compared with the prior art, the advantages of the utility model are:
[0019] 1. The coal surface detection device of the utility model is installed on the spiral sampling head when it is used to detect the height of the coal surface. The counterweight of the coal surface detection device and the bottom end of the sampling head are in a relatively static state and have a height difference ΔL. The sampling head moves downward under the action of the driving motor and drives the coal surface detection device to descend together. When the counterweight of the coal surface detection device does not contact the coal surface, the elastic component is deformed under the gravity of the counterweight, and the detection component senses the deformation signal of the elastic component; when the coal surface detection device continues to descend and the counterweight contacts the coal surface, it is supported by the upward support force of the coal surface, and the gravity of the counterweight is offset, and the elastic component returns to its original state. The detection component does not sense the deformation signal of the elastic component at this time. At this time, the height of the coal surface at the sampling point can be obtained by calculating the sum of the height L of the lower end of the sampling head and the height difference ΔL between the counterweight and the bottom end of the sampling head.
[0020] 2. In the utility model, whether the counterweight block contacts the coal surface is strongly related to the deformation of the elastic component, which in turn determines whether the detection component will sense the signal. The method of physical contact and signal conversion is simple and direct, and the coal surface height at each sampling point can be accurately and reliably detected. The volume of the coal sample at each sampling point can be conveniently calculated, and more accurate data support can be provided for the intelligent control of the reduction ratio of the automatic sample preparation at the back end. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a structural schematic diagram of the coal surface detection device of the utility model.
[0022] Figure 2 It is a structural schematic diagram of the sampling device of the utility model.
[0023] Legend:
[0024] 1. Mounting frame; 2. Elastic component; 21. Guide pin shaft; 22. Spring; 3. Connector; 4. Counterweight; 5. Detection component; 100. Drive motor; 101. Sampling head; 102. Coal surface detection device. DETAILED DESCRIPTION
[0025] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.
[0026] In the description of the present invention, it should be understood that the terms "side", "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.
[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0028] Embodiment 1
[0029] like Figure 1 As shown, this embodiment discloses a coal surface detection device 102, which is used to be installed on a sampling head 101, and includes a mounting frame 1, an elastic component 2, a connecting piece 3, a counterweight block 4 and a detection component 5. The elastic component 2, the connecting piece 3 and the counterweight block 4 are installed on the sampling head 101 through the mounting frame 1, the elastic component 2 is connected to the counterweight block 4 through the connecting piece 3, and the detection component 5 is used to detect the deformation amount of the elastic component 2.
[0030] In the coal surface detection device 102 of this embodiment, whether the counterweight block 4 contacts the coal surface is related to whether the elastic component 2 is strongly deformed, which in turn determines whether the detection component 5 will sense the signal. The method of physical contact and signal conversion is simple and direct, and the coal surface height at each sampling point can be accurately and reliably obtained. The volume of the coal sample at each sampling point can be conveniently calculated, and at the same time, more accurate data support can be provided for the intelligent control of the reduction ratio of the automatic sample preparation at the back end.
[0031] In this embodiment, the elastic component 2 includes a guide pin 21 and a spring 22, the spring 22 is sleeved on the guide pin 21, and the bottom of the guide pin 21 is connected to the counterweight 4 through the connecting piece 3. When the counterweight 4 moves downward and has not yet contacted the coal surface, its gravity acts on the guide pin 21, driving the guide pin 21 to descend, and the spring 22 is deformed. At this time, the detection component 5 senses the deformation signal of the spring 22; when the counterweight 4 moves downward and contacts the coal surface, the upward force of the coal surface offsets the gravity, the guide pin 21 rises, and the spring 22 is deformed and restored. At this time, the detection component 5 will not sense the deformation signal of the spring 22. At this time, the height of the coal surface at the sampling point can be obtained by the sum of the actual height of the lower end of the sampling head 101 and the relative height difference ΔL between the counterweight 4 and the lower end of the sampling head 101.
[0032] In this embodiment, the detection component 5 is a micro switch. It should be noted that in other embodiments, the detection component 5 can be any one of a proximity switch and a photoelectric switch, as long as the deformation of the elastic component 2 can be detected.
[0033] In this embodiment, the spring 22 is a compression spring. In other embodiments, it may also be a tension spring or a torsion spring.
[0034] In this embodiment, the connecting member 3 is a rope structure, and further, in a preferred embodiment, the rope structure is a steel wire rope. It should be noted that the material of the rope structure is not limited, and other materials and connection methods with the counterweight block 4 should all be within the protection scope of this application.
[0035] Embodiment 2
[0036] This embodiment provides a sampling device, including a driving motor 100, a sampling head 101 and a coal surface detection device 102 as in the first embodiment. The coal surface detection device 102 is installed on the sampling head 101. The driving motor 100 drives the sampling head 101 to move up and down, and the coal surface detection device 102 moves up and down with the sampling head 101.
[0037] In this embodiment, the position of the counterweight block 4 is higher than the bottom end of the sampling head 101. The counterweight block 4 is designed to be higher than the bottom end of the sampling head 101, so that the sampling head 101 can contact the coal surface first, and the counterweight block 4 can contact the coal surface later, which can effectively prevent the connecting piece 3 of the coal surface detection device 102 from being rolled into the spiral tube by the sampling head 101, thereby avoiding equipment failure.
[0038] In this embodiment, the driving motor 100 is provided with a detector for detecting the lifting height value of the sampling head 101. Furthermore, in a preferred embodiment, the detector is an encoder.
[0039] Here’s how it works:
[0040] When used to detect the height of the coal surface, it is installed on the spiral sampling head 101, the counterweight block 4 of the coal surface detection device 102 and the bottom end of the sampling head 101 are in a relatively static state and have a height difference ΔL. The sampling head 101 moves downward under the action of the driving motor 100 and drives the coal surface detection device 102 to descend together. When the counterweight block 4 of the coal surface detection device 102 does not contact the coal surface, the elastic component 2 is deformed under the gravity of the counterweight block 4, and the detection component 5 senses the deformation signal of the elastic component 2; when the coal surface detection device 102 continues to descend and the counterweight block 4 contacts the coal surface, it is supported by the upward support force of the coal surface, and the gravity of the counterweight block 4 is offset, and the elastic component 2 returns to its original state. The detection component 5 does not sense the deformation signal of the elastic component 2 at this time. At this time, the height of the coal surface at the sampling point can be obtained by calculating the sum of the height L of the lower end of the sampling head 101 and the height difference ΔL between the counterweight block 4 and the bottom end of the sampling head 101.
[0041] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.
Claims
1. A coal surface detection device, used to be installed on a sampling head, characterized in that: The invention comprises a mounting frame (1), an elastic component (2), a connecting piece (3), a counterweight (4) and a detection component (5); the elastic component (2), the connecting piece (3) and the counterweight (4) are mounted on a sampling head via the mounting frame (1); the elastic component (2) is connected to the counterweight (4) via the connecting piece (3); and the detection component (5) is used to detect whether the elastic component (2) is deformed.
2. The coal surface detection device according to claim 1, characterized in that: The elastic component (2) comprises a guide pin shaft (21) and a spring (22), wherein the spring (22) is sleeved on the guide pin shaft (21), and the bottom of the guide pin shaft (21) is connected to a counterweight (4) via a connecting piece (3).
3. The coal surface detection device according to claim 1, characterized in that: The detection component (5) is any one of a micro switch, a proximity switch or a photoelectric switch.
4. The coal surface detection device according to claim 2, characterized in that: The spring (22) is one of a compression spring, a tension spring or a torsion spring.
5. The coal surface detection device according to claim 1, characterized in that: The connecting piece (3) is a rope structure.
6. The coal surface detection device according to claim 5, characterized in that: The rope structure is a steel wire rope.
7. A sampling device, characterized in that: The invention comprises a driving motor (100), a sampling head (101), and a coal surface detection device (102) according to any one of claims 1 to 6, wherein the coal surface detection device (102) is installed on the sampling head (101), the driving motor (100) drives the sampling head (101) to move up and down, and the coal surface detection device (102) moves up and down along with the sampling head (101).
8. The sampling device according to claim 7, characterized in that: The position of the counterweight block (4) is higher than the bottom end of the sampling head (101).
9. The sampling device according to claim 7, characterized in that: The driving motor (100) is provided with a detector for detecting the lifting height value of the sampling head (101).
10. The sampling device according to claim 9, characterized in that: The detector is an encoder.