Dustproof device and laser coal checking instrument

Abstract

The invention belongs to the technical field of dust removal devices of laser coal checking instruments, and discloses a dustproof device and a laser coal checking instrument. The dustproof device comprises a protective shell and a protective piece. The protective shell is provided with a window, the laser module can be placed in the protective shell, and a probe of the laser module directly faces the window. The protection piece covers the window, the protection piece is detachably connected with the protection shell, and the probe can detect through the protection piece. The dustproof device can prevent dust, harmful gas and other pollutants from blocking the laser module, the protection effect on the laser module is good, and the measurement precision of the laser module is improved; the structure is simple, the arrangement cost is low, and the maintenance cost is low. The laser coal checking instrument comprises the laser module and the dustproof device, the laser module is located in the protective shell, and the probe of the laser module directly faces the protective piece, so that the measurement precision of the laser coal checking instrument is high.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal devices for laser coal counting instruments, and in particular to a dust prevention device and a laser coal counting instrument. Background Art

[0002] The laser coal meter is suitable for measuring the height, length and volume of coal piles, earthworks or ore piles of any shape in the power, coal, metallurgy and other industries. Its working principle is to use laser ranging technology to quickly measure the three-dimensional data of feature points on the coal pile and automatically record its spatial coordinates; then, the measurement data is transmitted to the PC, and the surface shape of the coal pile is fitted by digital interpolation technology to calculate the coal storage volume of the entire coal yard. The application scenario of the laser coal meter is seriously polluted by dust. When dust adheres to the probe of the laser coal meter, it is easy to hinder the emission and reception of the laser and affect the measurement results. Therefore, it is necessary to regularly remove dust from the laser coal meter. At present, the laser coal meter is generally dusted by jet or water spray through the pipeline. However, the jet dust removal method has a relatively high cost for laying air ducts and requires regular security inspection and maintenance of air ducts; the jet dust removal effect is not good. In addition to laying pipes and increasing pressure devices, water spraying for dust removal cannot be used immediately due to the presence of water droplets after spraying. Moreover, over time, the water droplets easily mix with dust in the air to form hard scale that is extremely difficult to clean and can easily damage the probe mirror.

[0003] Therefore, it is urgent to provide a dust prevention device to solve the above problems. Summary of the invention

[0004] The first purpose of the present invention is to provide a dustproof device, which can prevent dust, harmful gases and other pollution from blocking the laser module, has good protection effect on the laser module, and improves the measurement accuracy of the laser module; the structure is simple, the installation cost is low, and the maintenance cost is low.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] Dust protection device, including:

[0007] A protective shell, wherein the protective shell is provided with a window, the laser module can be placed in the protective shell, and the probe of the laser module faces the window;

[0008] A protective member is provided to cover the window, and the protective member is detachably connected to the protective shell, and the probe can detect through the protective member.

[0009] As an optional technical solution of the dustproof device, the dustproof device also includes a pressing frame, the pressing frame is pressed at the window of the protective shell, and the protective member is clamped between the protective shell and the pressing frame.

[0010] As an optional technical solution for the dustproof device, a gap is left between the pressure frame and the protective shell, and the protective member is arranged in the gap.

[0011] As an optional technical solution for the dustproof device, the protective member is a coated film, the coated film passes through the gap, and is attached to the window of the protective shell.

[0012] As an optional technical solution for the dustproof device, the dustproof device also includes a first roller, which is located on the outer wall of the protective shell, the coated film is partially wound around the first roller, the coated film is partially attached to the window of the protective shell, and the free end of the coated film extends beyond the edge of the pressure frame. The free end is pulled along a first direction away from the first roller, and the first roller rotates to release the coated film.

[0013] As an optional technical solution for the dustproof device, the dustproof device also includes a second reel, which is located on the outer wall of the protective shell and is arranged opposite to the first reel. The coated film at the free end portion is wound around the second reel. The second reel is rotated, and the second reel winds up the coated film pulled out from the window, driving the first reel to rotate and release the coated film, and the released coated film is pulled to the window.

[0014] As an optional technical solution for the dustproof device, the first roller and the second roller are both pulled tight on the coating film portion located at the window in a direction close to the protective shell.

[0015] As an optional technical solution of the dustproof device, the dustproof device further includes a sealing member, the sealing member extends along the circumference of the window and is arranged in a closed loop, and the pressing frame is pressed on the sealing member.

[0016] As an optional technical solution of the dustproof device, the dustproof device further includes a driving member, and an output end of the driving member is connected to the rotating shaft of the second reel.

[0017] The second object of the present invention is to provide a laser coal meter with high measurement accuracy.

[0018] To achieve this object, the present invention adopts the following technical solutions:

[0019] The laser coal counting instrument comprises a laser module and the above-mentioned dust-proof device, wherein the laser module is located in the protective shell, and the probe of the laser module faces the protective component.

[0020] Beneficial effects of the present invention:

[0021] The dustproof device provided by the present invention includes a protective shell and a protective member. The protective shell is provided with a window, and the laser module can be placed in the protective shell. The probe of the laser module is facing the window, and the protective member is covered on the window, and the probe can detect through the protective member. The protective shell and the protective member form a closed space to prevent the laser module from being polluted and damaged by dust, harmful gases, etc., and can especially prevent dust, harmful gases, etc. from polluting and blocking the probe of the laser module, thereby improving the measurement accuracy of the laser module. The dustproof device can prevent dust, harmful gases, etc. from polluting the laser module. Compared with the prior art in which the dust removal operation is performed after the dust and harmful gases pollute the laser module, the dustproof device has a good protective effect on the laser module, so that the measurement accuracy of the laser module is high, and the laser module can be avoided from being damaged by cleaning the laser module. In addition, the dustproof device has a simple structure and low installation cost; and the protective member is detachably connected to the protective shell, which is convenient for checking and repairing the laser module, as well as convenient for replacing the protective member and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a dustproof device provided by an embodiment of the present invention;

[0023] Figure 2 is a schematic structural diagram of a dustproof device (without showing the roll cover) provided in an embodiment of the present invention;

[0024] Figure 3 is a schematic structural diagram of a pressure frame of a dustproof device provided in an embodiment of the present invention;

[0025] Figure 4 is an assembly diagram of a pressing frame and a sealing member of a dustproof device provided in an embodiment of the present invention;

[0026] Figure 5 It is an assembly diagram of the first reel and the coating film of the dustproof device provided in an embodiment of the present invention.

[0027] In the figure:

[0028] 100, protective shell; 200, protective part; 210, coating film; 300, pressure frame; 310, connecting ear; 311, first side; 312, second side; 400, first reel; 500, second reel; 600, sealing part; 700, driving part; 800, bracket assembly; 810, reel bracket; 820, roller; 900, reel cover; 901, slit. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0033] The dustproof device provided in this embodiment can prevent dust, harmful gases and the like from polluting and blocking the laser module, has a good protective effect on the laser module, and improves the measurement accuracy of the laser module; it has a simple structure, low installation cost, and low maintenance cost.

[0034] Specific as Figure 1 , Figure 2 and Figure 3 As shown, the dustproof device includes a protective shell 100 and a protective member 200. The protective shell 100 is provided with a window, and the laser module can be placed in the protective shell 100, and the probe of the laser module faces the window. The protective member 200 is covered on the window, and the protective member 200 is detachably connected to the protective shell 100, and the probe can detect through the protective member 200.

[0035] Based on the above design, the laser module can be placed in the protective shell 100, and the probe can detect through the protective member 200. The protective shell 100 and the protective member 200 form a closed space to prevent the laser module from being polluted and damaged by dust, harmful gases, etc., and especially to prevent dust, harmful gases, etc. from blocking the probe of the laser module, thereby improving the measurement accuracy of the laser module. The dustproof device can prevent dust, harmful gases, etc. from polluting the laser module. Compared with the prior art in which the dust removal operation is performed after the dust and harmful gases pollute the laser module, the dustproof device has a good protective effect on the laser module, so that the measurement accuracy of the laser module is high, and the laser module can be avoided from being damaged by cleaning the laser module. In addition, the dustproof device has a simple structure and low installation cost; and the protective member 200 is detachably connected to the protective shell 100, which is convenient for checking and repairing the laser module, and convenient for replacing the protective member 200, reducing maintenance costs.

[0036] Furthermore, the dustproof device also includes a pressing frame 300, which is pressed at the window of the protective shell 100, and the protective member 200 is clamped between the protective shell 100 and the pressing frame 300. The pressing frame 300 is used to fix the pressed protective member 200; and by disassembling the pressing frame 300, the protective member 200 can be disassembled, assembled and replaced to avoid damage to the protective member 200 and affect the perspective effect and sealing effect of the protective member 200.

[0037] A gap is left between the pressing frame 300 and the protective shell 100 , and the protective member 200 is inserted into the gap. The protective member 200 can be pushed, pulled, disassembled, and replaced without disassembling the pressing frame 300 .

[0038] Optionally, the protective member 200 is in the shape of a thin sheet, and the protective member 200 in the shape of a thin sheet can be penetrated and installed in the gap position.

[0039] Optionally, the protective member 200 is a coating film 210, the coating film 210 penetrates a gap and is attached to the window of the protective shell 100. The coating film 210 has good perspective and low cost, and is attached to the window of the protective shell 100 with good sealing.

[0040] Furthermore, the dustproof device further includes a first reel 400, which is located on the outer wall of the protective shell 100, and the coating film 210 is partially wound around the first reel 400, and the coating film 210 is partially attached to the window of the protective shell 100, and the free end of the coating film 210 exceeds the edge of the pressing frame 300, and the free end is pulled away from the first reel 400 along the first direction, and the first reel 400 rotates to release the coating film 210. This method is similar to the principle of taking and using a roll of paper, and the coating film 210 can be replaced as it becomes dirty, without disassembling the pressing frame 300, and the coating film 210 can be replaced by pulling it.

[0041] It should be noted that the first direction is direction A in the figure.

[0042] Furthermore, the dustproof device further includes a second reel 500, which is located on the outer wall of the protective shell 100 and is arranged opposite to the first reel 400. The coating film 210 at the free end portion is wound around the second reel 500. The second reel 500 is rotated, and the second reel 500 winds up the coating film 210 pulled out from the window, driving the first reel 400 to rotate and release the coating film 210, and the released coating film 210 is pulled to the window. On the one hand, the second reel 500 can rotate and pull the coating film 210 portion that needs to be replaced at the window to pull the new coating film 210 portion to the window, and on the other hand, it can wind and collect the discarded coating film 210 that is pulled out.

[0043] In order to increase the sealing performance between the coating film 210 and the protective housing 100 , the first reel 400 and the second reel 500 are both pulled tight on the coating film 210 located at the window in a direction close to the protective housing 100 .

[0044] Furthermore, if Figure 4 As shown, the dustproof device also includes a seal 600, which extends circumferentially along the window and is arranged in a closed loop. The pressure frame 300 is pressed on the seal 600 to increase the sealing performance of the protective shell 100 and the protective member 200 to avoid the phenomenon that the coating film 210 does not seal the window tightly, thereby increasing the protection of the laser module.

[0045] In this embodiment, the sealing member 600 is a foam sealing ring.

[0046] Optionally, a plurality of connecting ears 310 are provided at both end edges of the pressing frame 300 along the second direction, the plurality of connecting ears 310 are arranged at intervals, and bolts are passed through to connect the connecting ears 310 and the protective shell 100 .

[0047] In this embodiment, the connecting ear 310 includes a first edge 311 and a second edge 312 connected in an L shape, the first edge 311 is attached to the side wall of the pressure frame 300 and the side wall of the seal 600, the second edge 312 is attached to the protective shell 100, and bolts are passed through to connect the first edge 311 and the protective shell 100.

[0048] It should be noted that the second direction is direction B in the figure, which is perpendicular to the first direction.

[0049] In order to realize the automatic movement of the coating film 210 , the dustproof device further includes a driving member 700 , the output end of the driving member 700 is connected to the rotating shaft of the second reel 500 , and the driving member 700 drives the second reel 500 to rotate.

[0050] In this embodiment, the driving member 700 is a reduction motor, and in this embodiment, the dustproof device also includes a control system, through which the driving member 700 can be remotely automatically / manually controlled to run, and the precise movement of the coating film 210 can be accurately controlled to ensure the measurement accuracy of the laser module. In the actual operation of the laser module, a set value (for example, 1%) is set. When there is a discrete value greater than the set value in the point cloud data measured by the laser module, the control system remotely automatically controls or manually controls the driving member 700 to rotate a stroke of the length of the pressing frame 300 (the length dimension along the first direction).

[0051] Optionally, the dustproof device further includes a bracket assembly 800 , the bracket assembly 800 includes a reel bracket 810 , the reel bracket 810 is connected to the protective shell 100 , and the first reel 400 and the second reel 500 are both connected to the protective shell 100 via the reel bracket 810 .

[0052] Each reel support 810 is provided with a roller 820, one of the rollers 820 is located between the first reel 400 and the protective shell 100, and the other roller 820 is located between the protective shell 100 and the second reel 500. The coated film 210 released from the first reel 400 sequentially bypasses the roller 820 adjacent to the first reel 400, passes through the gap, bypasses the roller 820 adjacent to the second reel 500, and enters the second reel 500.

[0053] Alternatively, if Figure 1 , Figure 2 and Figure 5 As shown, a roll cover 900 is disposed outside the first roll 400 and the second roll 500, and the coating film 210 wound on the first roll 400 and the second roll 500 is respectively located in the corresponding roll cover 900. A slit 901 is disposed on the roll cover 900, and the width of the slit 901 is greater than the width of the coating film 210, and the coating film 210 is rolled into or out of the roll cover 900 through the slit 901.

[0054] In this embodiment, a half outer cover is further provided outside the roll cover 900 , and the half outer cover is connected to the reel support 810 for protecting the roll cover 900 .

[0055] The laser coal meter provided in this embodiment has high measurement accuracy.

[0056] Specifically, the laser coal meter includes a laser module and the above-mentioned dustproof device, the laser module is located in the protective housing 100, and the probe of the laser module faces the protective member 200. The laser module is located in a closed space formed by the protective housing 100 and the protective member 200, which prevents dust, harmful gases, etc. from contaminating the probe of the laser module, thereby improving the measurement accuracy of the laser module.

[0057] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A dustproof device, characterized in that: include: A protective shell (100), wherein the protective shell (100) is provided with a window, and a laser module can be placed in the protective shell (100), with a probe of the laser module facing the window; A protective member (200) is provided to cover the window, and the protective member (200) is detachably connected to the protective shell (100), and the probe can detect through the protective member (200).

2. The dustproof device according to claim 1, characterized in that: The dustproof device further comprises a pressing frame (300), wherein the pressing frame (300) is pressed on the window of the protective shell (100), and the protective member (200) is sandwiched between the protective shell (100) and the pressing frame (300).

3. The dustproof device according to claim 2, characterized in that: A gap is left between the pressing frame (300) and the protective shell (100), and the protective member (200) is arranged through the gap.

4. The dustproof device according to claim 3, characterized in that: The protective member (200) is a coating film (210), and the coating film (210) penetrates the gap and is attached to the window of the protective shell (100).

5. The dustproof device according to claim 4, characterized in that: The dustproof device also includes a first reel (400), the first reel (400) is located on the outer wall of the protective shell (100), the coating film (210) is partially wound around the first reel (400), the coating film (210) is partially attached to the window of the protective shell (100), and the free end of the coating film (210) exceeds the edge of the pressing frame (300), and the free end is pulled along a first direction away from the first reel (400), and the first reel (400) rotates to release the coating film (210).

6. The dustproof device according to claim 5, characterized in that: The dustproof device also includes a second reel (500), which is located on the outer wall of the protective shell (100) and is arranged opposite to the first reel (400). The coating film (210) at the free end portion is wound around the second reel (500). When the second reel (500) is rotated, the second reel (500) winds up the coating film (210) pulled out from the window, driving the first reel (400) to rotate and release the coating film (210), and the released coating film (210) is pulled to the window.

7. The dustproof device according to claim 6, characterized in that: The first reel (400) and the second reel (500) are both pulled tight on the portion of the coating film (210) located at the window in a direction close to the protective shell (100).

8. The dust prevention device according to claim 7, characterized in that: The dustproof device further comprises a sealing member (600), the sealing member (600) extending along the circumference of the window and arranged in a closed loop, and the pressing frame (300) is pressed on the sealing member (600).

9. The dustproof device according to claim 6, characterized in that: The dustproof device further comprises a driving member (700), the output end of the driving member (700) being connected to the rotating shaft of the second reel (500).

10. Laser coal meter, characterized in that: It comprises a laser module and the dustproof device according to any one of claims 1 to 9, wherein the laser module is located in the protective shell (100), and a probe of the laser module faces the protective member (200).

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