Electronic belt scale for coal mine

Abstract

This utility model discloses an electronic belt scale for coal mines, belonging to the technical field of electronic belt scales. The electronic belt scale for coal mines includes a support assembly and a belt. The support assembly includes a leg assembly, a crossbeam, and a pair of rotating rollers. The crossbeam is fixedly connected to one end face of the leg assembly. Both rotating rollers are rotatably connected to the crossbeam. The belt is fitted onto the pair of rotating rollers. The crossbeam includes a connecting beam, and a cleaning assembly is fixedly connected to one end face of the connecting beam. The cleaning assembly includes a first scraper and a second scraper, which respectively abut against the opposite end faces of the belt. Compared with the prior art, this electronic belt scale for coal mines can clean coal dust adhering to the belt feeding surface and speed measuring surface, keeping the belt surface clean, increasing the accuracy of belt speed measurement, and reducing the measurement error of the electronic belt scale.

Description

Technical Field

[0001] This utility model belongs to the technical field of electronic belt scales, specifically relating to an electronic belt scale for coal mines. Background Technology

[0002] An electronic belt scale is an automated weighing instrument that can continuously and dynamically weigh bulk materials without interrupting the conveyor belt's movement. It calculates instantaneous flow rate and cumulative weight by detecting belt load and speed signals. During coal mining, water is sprayed onto the coal ore to reduce airborne coal dust. This damp coal dust adheres to the feeding surface of the electronic belt scale, increasing the belt's weight. Since the speed measuring roller rolls on the belt's speed measuring surface to measure speed, damp coal dust adhering to the measuring surface can cause the speed measuring roller to malfunction, leading to inaccurate belt speed measurements. Furthermore, damp coal dust adhering to the belt causes variations in belt weight and inaccurate belt speed measurements, all of which increase the error in measuring the weight of the coal.

[0003] Therefore, in order to address the aforementioned technical problems, it is necessary to provide an electronic belt scale for coal mines.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to provide an electronic belt scale for coal mines, which can solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0007] An electronic belt scale for coal mines includes a support assembly and a belt. The support assembly includes a leg assembly, a crossbeam, and a pair of rotating rollers. The crossbeam is fixedly connected to one end face of the leg assembly. The pair of rotating rollers are rotatably connected to the crossbeam. The belt is sleeved on the pair of rotating rollers. The crossbeam includes a connecting beam. A cleaning assembly is fixedly connected to one end face of the connecting beam. The cleaning assembly includes a first scraper, a second scraper, a movable beam, and a pair of first connecting blocks. The pair of first connecting blocks are fixedly connected to the connecting beam. The movable beam is slidably connected to the pair of first connecting blocks. The first scraper is fixedly connected to the movable beam. The second scraper is slidably connected to the movable beam. The first scraper and the second scraper respectively abut against the opposite end faces of the belt.

[0008] In one or more embodiments of the present invention, the cleaning assembly further includes a pair of first sliders, each pair of first sliders being fixedly connected to a movable beam, and each pair of first sliders being slidably connected within a first connecting block. A first spring is installed inside the first connecting block, and the first spring abuts against the first slider. A second sliding groove is provided on the opposite end face of each of the first connecting blocks, and a first limiting block matching the second sliding groove is fixedly connected to the opposite end face of each of the first sliders.

[0009] In one or more embodiments of this utility model, a pair of first bolts are threadedly connected to one end face of the movable beam, and both of the first bolts are threadedly connected to the first scraper.

[0010] In one or more embodiments of this utility model, the first scraper is a scraper with a transverse V-shaped structure.

[0011] In one or more embodiments of this utility model, a pair of second connecting blocks are fixedly connected to one end face of the movable beam. The pair of second connecting blocks are respectively located on both sides of the belt. A second slider is slidably connected inside the second connecting block. The second slider is fixedly connected to the second scraper. A second spring is fixedly connected inside the second connecting block. The second spring is fixedly connected to the second slider. A third sliding groove is provided on the opposite end face of the second connecting block. A second limiting block matching the third sliding groove is fixedly connected to the opposite end face of the second slider.

[0012] In one or more embodiments of this utility model, a pair of second bolts are threadedly connected to one end face of the movable beam, and the second bolts are threadedly connected to the second connecting block.

[0013] In one or more embodiments of this utility model, a pair of third bolts are threadedly connected to one end face of the second scraper, and the third bolts are threadedly connected to the second slider.

[0014] In one or more embodiments of this utility model, a tray that matches the cleaning assembly is rotatably connected to the support leg assembly.

[0015] In one or more embodiments of this utility model, the support leg assembly includes a first support leg and a second support leg. Both the first support leg and the second support leg are provided with a pivot hole and a limiting hole. Both opposite end faces of the tray are provided with a rotation hole. A second pivot is rotatably connected inside the wall of the pivot hole. The second pivot passes through the rotation hole. A third limiting block and a handle are fixedly connected to the opposite end faces of the tray. The third limiting block and the handle are slidably connected inside the wall of the limiting hole.

[0016] In one or more embodiments of this utility model, a speed measuring component is rotatably connected to one end face of the connecting beam. The speed measuring component includes a speed measuring roller, which abuts against the belt. Anti-slip texture is provided on the outer side of the speed measuring roller.

[0017] Compared with the prior art, the electronic belt scale for coal mines of this utility model can clean the coal dust adhering to the feeding surface and speed measuring surface of the belt, keep the belt surface clean, maintain the stability of the belt weight, increase the accuracy of belt running speed measurement, and reduce the measurement error of the electronic belt scale. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of an electronic belt scale for coal mines according to one embodiment of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle;

[0021] Figure 3 A 3D view of the cleaning components;

[0022] Figure 4 Exploded view of the tensioning component;

[0023] Figure 5 Exploded view of the cleaning components;

[0024] Figure 6 This is a three-dimensional view of the first and second scrapers.

[0025] Explanation of key figure labels:

[0026] 1. Support leg assembly; 101. First support leg; 102. Second support leg; 103. First slide groove; 104. Limiting hole; 105. Rotating shaft hole; 2. Crossbeam; 201. Connecting beam; 3. Rotating roller; 4. Support roller; 5. Belt; 6. Speed ​​measuring assembly; 601. Speed ​​measuring roller; 7. Tensioning assembly; 701. Sliding block; 702. First rotating shaft; 703. Lifting rod; 704. Limiting ring; 705. Tensioning roller; 706. Handwheel; 8. Cleaning assembly; 801. First scraper; 802. 803. First scraper; 804. First slider; 805. Movable beam; 806. First spring; 807. First limiting block; 808. Second slide groove; 809. First bolt; 810. Second bolt; 811. Second connecting block; 812. Second slider; 813. Third bolt; 814. Second spring; 815. Second limiting block; 816. Third slide groove; 9. Tray; 901. Rotating hole; 902. Second rotating shaft; 903. Third limiting block; 904. Handle. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, an electronic belt scale for coal mines in one embodiment of this utility model includes a support assembly and a belt 5. The support assembly includes a leg assembly 1, a crossbeam 2 and a pair of rotating rollers 3. The crossbeam 2 is welded to one end face of the leg assembly 1. The pair of rotating rollers 3 are rotatably connected to the crossbeam 2. Several support rollers 4 are installed on the crossbeam 2. The belt 5 is sleeved on the pair of rotating rollers 3. The outer surface of the belt 5 is the feeding surface, and the inner surface of the belt 5 is the speed measuring surface. The feeding surface contacts the coal block, and the speed measuring surface abuts against the support rollers 4.

[0029] The crossbeam 2 includes a connecting beam 201. A cleaning component 8 is welded to the bottom end face of the connecting beam 201. The belt 5 passes through the middle of the cleaning component 8. The cleaning component 8 abuts against the feeding surface and the speed measuring surface of the belt 5. When the belt 5 passes through the cleaning component 8, the cleaning component 8 can remove the coal dust adhering to the inner and outer surfaces of the belt 5.

[0030] The speed measuring component 6 is rotatably connected to one end face of the connecting beam 201. The speed measuring component 6 includes a speed measuring roller 601, which abuts against the belt 5. The belt 5 passes through the cleaning component 8 and then contacts the speed measuring roller 601. At this time, the coal dust on the measuring surface has been removed, and the speed measuring roller 601 has good contact with the measuring surface, which can more accurately measure the speed of the belt.

[0031] Furthermore, the outer surface of the speed measuring roller 601 is provided with anti-slip texture to increase the friction between the speed measuring roller 601 and the belt 5, prevent the speed measuring roller 601 from sliding with the speed measuring surface, and improve the measurement accuracy.

[0032] like Figure 5 As shown, the cleaning assembly 8 includes a first scraper 801, a second scraper 802, a movable beam 805, and a pair of first connecting blocks 803. The pair of first connecting blocks 803 are welded to the bottom surface of the connecting beam 201. A first slider 804 is slidably connected inside each first connecting block 803. The first sliders 804 are all welded to the movable beam 805. A first spring 806 is installed inside each first connecting block 803, and the first spring 806 abuts against the first slider 804. A second groove 808 is formed on the opposite end face of each first connecting block 803. The opposite end faces of 04 are each welded with a first limiting block 807 that matches the second slide groove 808. The first scraper 801 is installed on the movable beam 805. The bottom end face of the first scraper 801 abuts against the speed measuring surface. Due to gravity and the thrust of the first spring 806 on the first slider 804, the first scraper 801 can make close contact with the speed measuring surface of the belt 5. The first scraper 801 can block the coal dust adhering to the speed measuring surface of the belt 5. At the same time, since the first slider 804 can slide up and down, the first scraper 801 will not affect the movement of the belt 5.

[0033] Furthermore, a pair of first bolts 809 are threadedly connected to one end face of the movable beam 805. Both of the first bolts 809 are threadedly connected to the first scraper 801. In this way, the first scraper 801 is fixed to the movable beam 805 by the first bolts 809. When it is necessary to replace or clean the first scraper 801, the first scraper 801 can be easily removed.

[0034] like Figure 6 As shown, the first scraper 801 is a horizontal V-shaped scraper with the apex of the first scraper 801 on the center line of the belt 5. The coal dust scraped off by the first scraper 801 can move to both sides along the side of the first scraper 801 and finally fall off the speed measuring surface of the belt 5, which can prevent the coal dust on the speed measuring surface from accumulating in front of the first scraper 801.

[0035] like Figure 5As shown, a pair of second connecting blocks 811 are installed on one end face of the movable beam 805. The pair of second connecting blocks 811 are located on both sides of the belt 5. A second slider 812 is slidably connected inside the second connecting block 811. A second spring 814 is welded to the second connecting block 811. The second spring 814 is welded together with the second slider 812. The second spring 814 retracts and pulls the second slider 812 upward. A third groove 816 is opened on the opposite end face of the second connecting block 811. A second limiting block 815 matching the third groove 816 is welded to the opposite end face of the second slider 812. The second scraper 802 is fixedly connected to the second slider 812 and abuts against the feeding surface of the belt 5. Because the second spring 814 applies a pulling force to the second slider 812, the second slider 812 slides upward, which in turn drives the second scraper 802 to slide upward, so that the top end face of the second scraper 802 is in close contact with the feeding surface of the belt 5, thereby scraping off the coal powder adhering to the feeding surface and keeping the feeding surface clean.

[0036] Preferably, a pair of second bolts 810 are threadedly connected to one end face of the movable beam 805. The second bolts 810 are threadedly connected to the second connecting block 811. The second connecting block 811 is connected to the movable beam 805 by the second bolts 810, so that the second connecting block 811 can be detached, thereby facilitating the installation of the second scraper 802 under the belt 5.

[0037] Furthermore, a pair of third bolts 813 are threadedly connected to one end face of the second scraper 802. The third bolts 813 are threadedly connected to the second slider 812. In this way, the second scraper 802 is fixed together with the second slider 812 by the third bolts 813. When it is necessary to replace or clean the second scraper 802, the second scraper 802 can be easily removed.

[0038] like Figure 3 , Figure 4 and Figure 5 As shown, a tray 9 that matches the cleaning assembly 8 is rotatably connected to the support leg assembly 1. The tray 9 is located below the cleaning assemblies 8 and 5. The cleaning assembly 8 can collect and centrally process the coal dust attached to the belt 5 by letting it fall into the tray 9.

[0039] The support leg assembly 1 includes a first support leg 101 and a second support leg 102. Both the first support leg 101 and the second support leg 102 are provided with a pivot hole 105 and a limiting hole 104. The opposite end faces of the tray 9 are provided with a rotating hole 901. A second pivot 902 is rotatably connected inside the wall of the pivot hole 105. The second pivot 902 passes through the rotating hole 901. A third limiting block 903 and a handle 904 are welded to the opposite end faces of the tray 9, respectively. The third limiting block 903 and the handle 904 are slidably connected inside the wall of the limiting hole 104. The height of the limiting hole 104 is lower than the height of the pivot hole 105. In this way, the tray 9 is placed at an angle. The coal powder in the tray 9 will fall down along the inclined surface of the tray 9, so that the coal powder will not accumulate directly under the electronic belt scale. The coal powder will fall outside the projection range of the electronic belt scale, which is convenient for subsequent processing of the coal powder.

[0040] Furthermore, the length and width of the limiting hole 104 are both greater than the diameter of the third limiting block 903, and the handle 904 protrudes from the end face of the first leg 101. Moving the handle 904 up and down can make the tray 9 rotate around the second rotating shaft 902, thereby making the tray 9 shake and shaking off the coal powder adhering to the bottom surface of the tray 9.

[0041] like Figure 2 and Figure 4 As shown, a tensioning assembly 7 is slidably connected to the support leg assembly 1. The tensioning assembly 7 includes a pair of sliding blocks 701, a first rotating shaft 702, and a tensioning roller 705. The opposite end faces of the first support leg 101 are provided with first grooves 103. The sliding blocks 701 are slidably connected to the groove wall of the first groove 103. The opposite end faces of the first rotating shaft 702 are welded to the sliding blocks 701. The tensioning roller 705 is rotatably connected to the outer side of the first rotating shaft 702. The tensioning roller 705 abuts against the belt 5. When the belt 5 is loose, the tensioning roller 705 applies a certain tension to the belt 5 to keep the belt 5 taut.

[0042] Furthermore, a lifting rod 703 is threadedly connected to the sliding block 701. The sliding block 701 has an internal thread, and the lifting rod 703 has an external thread on a portion located within the first sliding groove 103. When the lifting rod 703 rotates, it can drive the sliding block 701 to move up and down. The lifting rod 703 passes through the crossbeam 2 and is rotatably connected to the crossbeam 2. A pair of limiting rings 704 are welded to the outer side of the lifting rod 703. The pair of limiting rings 704 are located on the upper and lower end faces of the crossbeam 2, thereby locking the lifting rod 703 in place on the crossbeam 2 and preventing the lifting rod 703 from moving up and down. A handwheel 706 is welded to the top surface of the lifting rod 703 for easy rotation. When belt 5 becomes loose, rotate lifting rod 703 to move sliding block 701 downward, which in turn drives tension roller 705 downward. Tension roller 705 comes into contact with belt 5, thereby tightening belt 5. After belt 5 is tightened, the possibility of sliding friction between belt 5 and rotating roller 3 and support roller 4 is reduced, making the measurement of electronic belt scale more accurate.

[0043] When using, such as Figure 1 As shown, a cleaning assembly 8 is installed on the connecting beam 201. The belt 5 passes through the cleaning assembly 8. The first scraper 801 and the second scraper 802 are located on the upper and lower sides of the belt 5, respectively. Due to the tension of the second spring 814, the second scraper 802 and the first scraper 801 move closer to each other, so that the first scraper 801 abuts against the speed measuring surface of the belt 5 and the second scraper 802 abuts against the feeding surface of the belt 5. This can clean the coal dust adhering to the inner and outer surfaces of the belt 5, so that there is no sliding friction between the speed measuring assembly 6 and the belt 5, thereby making the speed measurement more accurate and ensuring the accuracy of the weighing. The coal dust scraped off by the cleaning assembly 8 falls into the tray 9 and slides down the inclined ground of the tray 9 beyond the projection of the electronic belt scale, which facilitates the cleaning of the coal dust. When the belt 5 becomes loose, the tensioning assembly 7 can tighten the belt 5, thereby further reducing the measurement error and improving the measurement accuracy.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electronic belt scale for coal mines, comprising a support assembly and a belt, wherein the support assembly includes a leg assembly, a crossbeam, and a pair of rotating rollers, the crossbeam being fixedly connected to one end face of the leg assembly, and the pair of rotating rollers being rotatably connected to the crossbeam, and the belt being sleeved on the pair of rotating rollers, characterized in that: The crossbeam includes a connecting beam, and a cleaning assembly is fixedly connected to one end face of the connecting beam. The cleaning assembly includes a first scraper, a second scraper, a movable beam, and a pair of first connecting blocks. The pair of first connecting blocks are fixedly connected to the connecting beam, and the movable beam is slidably connected to the pair of first connecting blocks. The first scraper is fixedly connected to the movable beam, and the second scraper is slidably connected to the movable beam. The first scraper and the second scraper respectively abut against the opposite end faces of the belt.

2. The electronic belt scale for coal mines according to claim 1, characterized in that, The cleaning assembly also includes a pair of first sliders, each pair of first sliders being fixedly connected to the movable beam. The pair of first sliders are slidably connected within a first connecting block. A first spring is installed inside the first connecting block, and the first spring abuts against the first slider. A second sliding groove is provided on the opposite end face of each of the first connecting blocks, and a first limiting block matching the second sliding groove is fixedly connected to the opposite end face of each of the first sliders.

3. The electronic belt scale for coal mines according to claim 2, characterized in that, A pair of first bolts are threaded to one end face of the movable beam, and both of the first bolts are threaded to the first scraper.

4. The electronic belt scale for coal mines according to claim 3, characterized in that, The first scraper is a scraper with a transverse V-shaped structure.

5. The electronic belt scale for coal mines according to claim 1, characterized in that, A pair of second connecting blocks are fixedly connected to one end face of the movable beam. The pair of second connecting blocks are located on both sides of the belt. A second slider is slidably connected inside the second connecting block. The second slider is fixedly connected to the second scraper. A second spring is fixedly connected inside the second connecting block. The second spring is fixedly connected to the second slider. A third sliding groove is opened on the opposite end face of the second connecting block. A second limiting block matching the third sliding groove is fixedly connected to the opposite end face of the second slider.

6. The electronic belt scale for coal mines according to claim 5, characterized in that, A pair of second bolts are threaded to one end face of the movable beam, and the second bolts are threaded to the second connecting block.

7. The electronic belt scale for coal mines according to claim 6, characterized in that, A pair of third bolts are threaded to one end face of the second scraper, and the third bolts are threaded to the second slider.

8. The electronic belt scale for coal mines according to claim 1, characterized in that, The support leg assembly is rotatably connected to a tray that matches the cleaning assembly.

9. The electronic belt scale for coal mines according to claim 8, characterized in that, The support leg assembly includes a first support leg and a second support leg. Both the first support leg and the second support leg are provided with a pivot hole and a limiting hole. The opposite end faces of the tray are provided with a rotation hole. A second pivot is rotatably connected inside the pivot hole. The second pivot passes through the rotation hole. A third limiting block and a handle are fixedly connected to the opposite end faces of the tray. The third limiting block and the handle are slidably connected inside the limiting hole.

10. An electronic belt scale for coal mines according to claim 9, characterized in that, The connecting beam is rotatably connected to a speed measuring component on one end face. The speed measuring component includes a speed measuring roller, which abuts against the belt. The outer surface of the speed measuring roller is provided with anti-slip texture.

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