Freight cableway traction speed detection device

Abstract

The utility model discloses a freight cableway traction speed detection device, belongs to the field of freight cableway safety operation, and aims to monitor the cableway traction speed in real time. Comprising a fluted disc and a speed measurement sensor, wherein the fluted disc is a circular ring with uniformly distributed gears on the periphery; the fluted disc is coaxially mounted on a wheel cover of the vertical guide wheel; the speed measurement sensor is mounted on the bracket; a monitoring gap is formed between the speed measuring sensor and the fluted disc, and the speed measuring sensor monitors each tooth passing through the speed measuring sensor on the fluted disc to obtain the traction speed. When the fluted disc rotates and each tooth passes through the speed measuring sensor, the speed measuring sensor can detect the existence of the teeth and generate an electric pulse signal, and the rotating speed of the fluted disc can be calculated by counting the number of pulses generated in unit time, so that the rotating speed of the vertical guide wheel is obtained, and the traction speed of the ore bucket is further obtained. A judgment basis is provided for the online operation condition of the ore bucket, and corresponding countermeasures are guided to be taken actively, so that the fault rate of operation of the freight cableway ore bucket is reduced.

Description

Technical Field

[0001] This utility model relates to the field of safe operation technology of freight cableways, specifically a traction speed detection device for freight cableways. Background Technology

[0002] Circulating freight cableways are essential transportation equipment in coal mine production lines, widely used for raw coal transportation and gangue disposal. Currently, there is no effective monitoring of the traction speed of freight cableways.

[0003] A certain type of freight cableway is over 2 kilometers long, with an elevation difference of up to 300 meters between loading and unloading stations, and a maximum distance of over 360 meters between towers. When a heavily loaded ore bucket travels between towers with large gaps, the speed of the ore bucket will increase due to the downward inertia of gravity, causing the ore bucket to travel faster than the theoretical speed of the winch traction. If the ore bucket is suspended, the gravity of the ore bucket will also cause the speed of the ore bucket to increase. As a result, accidents such as ore bucket jamming, running away, and falling off are likely to occur between towers with large gaps. Utility Model Content

[0004] The purpose of this invention is to provide a traction speed detection device for freight cableways, so as to monitor the traction speed of the cableway in real time and facilitate timely measures to reduce the failure rate of the freight cableway mining buckets on the line.

[0005] The technical solution adopted in this utility model is: a traction speed detection device for a freight cableway. The freight cableway includes a vertical guide wheel that guides and supports the traction cable and a bracket for mounting the vertical guide wheel; it includes a toothed disc and a speed sensor. The toothed disc is a ring with evenly distributed gears on its outer circumference; the toothed disc is coaxially mounted on the outer circumference of the wheel cover of the vertical guide wheel and rotates synchronously with the vertical guide wheel; the speed sensor is mounted on the bracket; and a monitoring gap is provided between the speed sensor and the toothed disc. The speed sensor monitors each tooth on the toothed disc that passes through the speed sensor to obtain the traction speed.

[0006] Furthermore, the speed sensor is mounted on the bracket via a mounting base.

[0007] Furthermore, the mounting base includes a mounting cylinder; the mounting cylinder is mounted on the bracket, and the mounting cylinder is provided with a mounting through hole extending along its axial direction; the rod of the speed sensor is axially movably inserted into the mounting through hole, and an adjusting screw is provided between the rod of the speed sensor and the mounting cylinder to adjust and lock their positions.

[0008] Furthermore, the mounting base also includes a mounting plate, which is cantilevered and fixed to the bracket, with its cantilever end extending along the axial direction of the gear disk toward the side where the gear disk is located; the mounting cylinder is fixed to the cantilever section of the mounting plate.

[0009] Furthermore, the gear disc includes two semi-circular annular gear plates, which are joined together to form a circular ring, and each gear plate is detachably connected to the wheel cover of the vertical guide wheel by bolts.

[0010] Furthermore, the two gear ring pieces are joined together in a toothed manner at the splicing surface.

[0011] The beneficial effects of this utility model are as follows: In this utility model, a toothed disc that rotates synchronously with the vertical guide wheel is installed on the wheel cover of the vertical guide wheel, and a speed sensor is installed on the bracket. When the toothed disc rotates, the speed sensor detects the presence of each tooth and generates an electrical pulse signal when each tooth passes by the speed sensor. By counting the number of pulses generated per unit time, the rotational speed of the toothed disc can be calculated, thereby obtaining the rotational speed of the vertical guide wheel, and thus detecting the traction speed of the mine bucket. This provides a basis for judging the online operation status of the mine bucket, guides the active implementation of corresponding countermeasures, and helps to reduce the failure rate of the freight cableway mine bucket on the line. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the freight cableway traction speed detection device disclosed in this utility model.

[0013] Figure 2 for Figure 1 The left view;

[0014] Figure 3 This is a schematic diagram of the gear plate assembly.

[0015] In the figure, wheel cover 1, bracket 2, gear disc 3, gear ring plate 301, speed sensor 4, mounting base 5, mounting cylinder 501, mounting through hole 502, adjusting screw 503, and mounting plate 504 are shown. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] In the description of this specification, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0018] In addition to the traction cable and load-bearing cable, the freight cableway also includes a vertical guide wheel that guides and supports the traction cable, and a support 2 for mounting the vertical guide wheel. The support 2 serves to install the vertical guide wheel. In the freight cableway, the rotational speed of the vertical guide wheel is directly related to the traction speed of the mine bucket. By monitoring the rotational speed of the vertical guide wheel, the operating speed of the mine bucket can be indirectly calculated. Directly monitoring the operating speed of the mine bucket is relatively complex. This utility model discloses a freight cableway traction speed detection device, which obtains the operating speed of the mine bucket by monitoring the rotational speed of the vertical guide wheel. The specific structure is as follows... Figure 1 and Figure 2 As shown, it includes a geared disc 3 and a speed sensor 4. The geared disc 3 is a ring with evenly distributed gears on its outer circumference. The geared disc 3 is coaxially mounted on the outer circumference of the wheel cover 1 of the vertical guide wheel and rotates synchronously with the vertical guide wheel. The speed sensor 4 is mounted on a bracket 2. A monitoring gap is provided between the speed sensor 4 and the geared disc 3. The speed sensor 4 monitors each tooth on the geared disc 3 that passes through the speed sensor 4 to obtain the traction speed.

[0019] The wheel cover 1 typically covers the outside of the vertical guide wheel, primarily protecting the internal mechanical components (such as bearings and shafts) from external environmental interference and damage (such as dust, rain, and debris). It also improves the equipment's safety and lifespan. The gear disc 3 is installed on the outside of the wheel cover 1, facilitating installation. The gear disc 3 rotates synchronously with the vertical guide wheel, providing a detection signal to the speed sensor 4. The speed sensor 4 is mounted on the bracket 2, and its position is fixed after installation. It is important to note that a monitoring gap is provided between the speed sensor 4 and the gear disc 3. This gap indicates that the speed sensor 4 performs non-contact detection of the gear disc 3, avoiding the risk of damage from contact. Furthermore, this monitoring gap ensures that only one tooth on the gear disc 3 is within the detection range of the speed sensor 4 at a time; the speed sensor 4 will not detect two teeth simultaneously. During operation, every tooth will pass through the detection range of the speed sensor 4, preventing a situation where a tooth passes through the speed sensor 4 without being detected. Thus, when the toothed disc 3 rotates, each tooth passes the speed sensor 4, and the speed sensor 4 will detect the presence of the tooth and generate an electrical pulse signal. By counting the number of pulses generated per unit time, the rotational speed of the toothed disc 3 can be calculated, thereby obtaining the rotational speed of the vertical guide wheel, and thus detecting the traction speed of the hopper.

[0020] To facilitate the installation of the speed sensor 4, the speed sensor 4 is mounted on the bracket 2 via the mounting base 5.

[0021] The mounting base 5 can take various forms, such as L-shaped bases. In this embodiment, the mounting base 5 includes a mounting cylinder 501. The mounting cylinder 501 is mounted on the bracket 2, and a mounting through hole 502 is provided on the mounting cylinder 501 along its axial direction. The rod of the speed sensor 4 is axially inserted into the mounting through hole 502, and an adjusting screw 503 is provided between the rod of the speed sensor 4 and the mounting cylinder 501 to adjust and lock their positions.

[0022] The mounting cylinder 501 has a mounting through hole 502 for inserting the rod of the speed sensor 4. Moving the rod along the axial direction of the mounting through hole 502 allows for easy adjustment of the distance between the sensing part of the speed sensor 4 and the gear plate 3.

[0023] If the mounting cylinder 501 is directly fixed to the bracket 2, the mounting cylinder 501 needs to be long enough. In this embodiment, in order to reduce the length of the mounting cylinder 501 and thus reduce the weight, the mounting base 5 preferably includes a mounting plate 504. The mounting plate 504 is cantilevered and fixed to the bracket 2, and its cantilever end extends along the axial direction of the gear disk 3 toward the side where the gear disk 3 is located. The mounting cylinder 501 is fixed to the cantilever section of the mounting plate 504.

[0024] To facilitate the installation of the gear disc 3 onto the wheel cover 1 of the vertical guide wheel, in this embodiment, as follows: Figure 3 As shown, the gear disc 3 includes two semi-circular gear ring plates 301. The two semi-circular gear ring plates 301 are joined together to form a ring, and each gear ring plate 301 is detachably connected to the wheel cover 1 of the vertical guide wheel by bolts. In this way, one gear ring plate 301 can be installed first, and then the other gear ring plate 301 can be installed.

[0025] To prevent misalignment of the two gear ring pieces 301, in this embodiment, the two gear ring pieces 301 are joined by teeth at the splicing surface. Toothed splicing means that one gear ring piece 301 has protruding teeth, and the other gear ring piece 301 has a corresponding groove that matches the teeth. The teeth are inserted into the grooves for positioning, preventing misalignment of the two gear ring pieces 301 during splicing or long-term use. As shown in the figure, triangular teeth and triangular grooves are respectively provided on the two gear ring pieces 301.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A traction speed detection device for a freight cableway, the freight cableway comprising a vertical guide wheel for guiding and supporting the traction cable and a support frame (2) for mounting the vertical guide wheel; characterized in that: The device includes a toothed disc (3) and a speed sensor (4). The toothed disc (3) is a ring with evenly distributed teeth on its outer circumference. The toothed disc (3) is coaxially mounted on the outer circumference of the wheel cover (1) of the vertical guide wheel and rotates synchronously with the vertical guide wheel. The speed sensor (4) is mounted on a bracket (2). A monitoring gap is provided between the speed sensor (4) and the toothed disc (3). The speed sensor (4) monitors each tooth on the toothed disc (3) that passes through the speed sensor (4) to obtain the traction speed.

2. The freight cableway traction speed detection device as described in claim 1, characterized in that: The speed sensor (4) is mounted on the bracket (2) via the mounting base (5).

3. The freight cableway traction speed detection device as described in claim 2, characterized in that: The mounting base (5) includes a mounting cylinder (501); the mounting cylinder (501) is mounted on the bracket (2), and the mounting cylinder (501) is provided with a mounting through hole (502) that runs through it along its axial direction; the rod of the speed sensor (4) is axially inserted into the mounting through hole (502), and an adjusting screw (503) is provided between the rod of the speed sensor (4) and the mounting cylinder (501) to adjust and lock their positions.

4. The freight cableway traction speed detection device as described in claim 3, characterized in that: The mounting base (5) also includes a mounting plate (504), which is cantilevered and fixed to the bracket (2), and its cantilever end extends along the axial direction of the gear disc (3) toward the side where the gear disc (3) is located; the mounting cylinder (501) is fixed to the cantilever section of the mounting plate (504).

5. The freight cableway traction speed detection device as described in any one of claims 1-4, characterized in that: The gear disc (3) includes two semi-circular gear rings (301), which are joined together to form a ring, and each gear ring (301) is detachably connected to the wheel cover (1) of the vertical guide wheel by bolts.

6. The freight cableway traction speed detection device as described in claim 5, characterized in that: The two gear ring pieces (301) are joined together in a toothed manner at the splicing surface.

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