Speed detection device for mine transportation

Abstract

The utility model relates to the technical field of speed detection, and discloses a speed detection device for mine transportation, which comprises a fixed support, a movable support, a roller, a detection assembly and a lifting assembly. The movable support is used for installing the roller structure, the lifting assembly is used for driving the movable support to rotate, the movable support can be driven to be lifted through the lifting assembly when needed, the roller is made to be separated from the conveying belt, the state of the speed detection assembly can be conveniently confirmed, and the accuracy and reliability of speed detection are guaranteed. And the brake structure is arranged to decelerate the lifted roller, so that the roller is at zero speed and then is put down to be in contact with the conveying belt, and the belt conveyor can be ensured to be in a zero-speed state more reliably as required.

Description

TECHNICAL FIELD

[0001] The utility model relates to speed detection technical field, concretely relates to a speed detection device for mine transportation. BACKGROUND

[0002] In mine transportation, the belt conveyor is an important material conveying equipment, and its safe operation is crucial. In order to ensure the safe operation of the equipment, the speed of the equipment needs to be monitored. However, due to the harsh working conditions of the mine, there are certain problems in the direct detection of the speed of the belt conveyor by some commonly used speed sensors. For example, the harsh working conditions can easily cause damage to the sensor, shorten the service life and cause cost problems, and can also cause insufficient detection reliability. In addition, the mine belt conveyor also has the situation of slipping, and direct detection of the speed of the belt can easily cause false positives.

[0003] Therefore, the existing speed detection method of the mine belt conveyor is to set a roller structure in contact with the belt, and to set corresponding sensing elements (such as magnetic steel) on the roller, and then to detect the speed of the roller to obtain the speed of the belt. This detection method is suitable for mine environment and can ensure service life and detection reliability. For example, a Chinese utility model patent with publication number CN202956388U discloses a mine-used intrinsic safety type speed detection device.

[0004] The support structure for supporting the roller structure in the existing intrinsic safety type speed detection device is usually fixedly connected to the equipment. However, in actual use, firstly, the state of the speed detection component itself needs to be confirmed regularly to ensure the reliability of speed detection; secondly, the belt conveyor needs to be regularly maintained, and the zero speed state of the belt conveyor needs to be confirmed during this process. However, the fixed connection of the existing detection device is not convenient for confirming the state of the speed detection component itself, and the detection reliability of the zero speed state needs to be improved. UTILITY MODEL CONTENTS

[0005] The technical problem solved by the utility model is that the fixed connection of the existing detection device is not convenient for confirming the state of the speed detection component itself, and the detection reliability of the zero speed state needs to be improved.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A speed detection device for mine transportation, comprising:

[0008] A fixed support is fixedly installed on the cross beam of the belt conveyor;

[0009] A movable support is rotatably connected to the fixed support at the end thereof;

[0010] A roller is rotationally arranged on the movable support and located at one end away from the fixed support;

[0011] A detection assembly is arranged for detecting the rotation speed of the roller.

[0012] A lifting assembly is arranged for driving the movable support to rotate, and the rotation center is the rotation connection position between the movable support and the fixed support.

[0013] In one scheme of the present application, the fixed support comprises a pressing plate structure, and the pressing plate structure is fixedly connected with the cross beam.

[0014] In one scheme of the present application, the pressing plate structure comprises an upper pressing plate and a lower pressing plate, and the upper pressing plate and the lower pressing plate are respectively arranged at two sides of the cross beam and locked by bolts.

[0015] In one scheme of the present application, a stabilizing plate is arranged between the upper pressing plate and the cross beam, the stabilizing plate is arranged at an angle, and a protruding structure matched with the stabilizing plate is arranged on the upper pressing plate.

[0016] In one scheme of the present application, the fixed support comprises an upper support, a connecting plate and a lower support, the connecting plate is fixedly connected with the lower pressing plate, and the upper support and the lower support are respectively fixedly connected at two ends of the connecting plate.

[0017] In one scheme of the present application, a brake structure is further arranged, the brake structure is fixedly installed on the fixed support and matched with the position of the roller.

[0018] In one scheme of the present application, the brake structure comprises a brake plate and a brake pad, one end of the brake plate is fixedly connected with the lower support, the other end is fixedly connected with the brake pad, and the brake pad is in an arc structure.

[0019] In one scheme of the present application, the brake pad and the brake plate are detachably fixedly connected through a fixing member.

[0020] In one scheme of the present application, the lifting assembly comprises a round shaft, a handle and a traction rope, the round shaft is rotationally connected with the upper support, the handle is arranged in parallel with the round shaft and connected with the round shaft through a connecting rod, one end of the traction rope is wound on the round shaft, and the other end is fixedly connected with the movable support.

[0021] In one scheme of the present application, a blocking ring is sleeved on the round shaft, and a rope blocking shaft is arranged on the upper support.

[0022] The present application has the following beneficial effects:

[0023] The movable support is arranged for mounting the roller structure, the lifting assembly is arranged for driving the movable support to rotate, and the movable support can be driven to lift by the lifting assembly when necessary, so that the roller is separated from the conveying belt, and confirmation of the state of the speed detection assembly itself is facilitated, and the accuracy and reliability of speed detection are ensured.

[0024] Additional aspects and advantages of the present application will be given in part in the following description, and will become more apparent from the description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0026] Figure 1 is a structural schematic view of the belt conveyor of the present application;

[0027] Figure 2 is a structural schematic view of the roller in contact with the conveying belt of the present application;

[0028] Figure 3 is a structural schematic view of the roller in contact with the brake structure of the present application;

[0029] Figure 4 is a structural schematic view of the whole from one perspective of the present application;

[0030] Figure 5 is a structural schematic view of the whole from another perspective of the present application.

[0031] The reference signs in the drawings are as follows: 1, cross beam; 2, conveying belt; 3, pressing plate structure; 4, stabilizing plate; 5, fixed support; 6, movable support; 7, roller; 8, probe structure; 9, sensing element; 10, round shaft; 11, traction rope; 12, handle; 13, brake structure; 14, rope blocking shaft. DETAILED DESCRIPTION

[0032] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, front, back, left, right and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0034] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0035] Please refer to Figures 1-5 The utility model discloses a speed detection device for mine transportation, including fixed support 5, movable support 6, cylinder 7, detection subassembly and lifting assembly. Among them, the fixed support 5 is fixedly installed on the crossbeam 1 of belt conveyor, this fixed connection can be realized through bolt structure. Specifically, the fixed support 5 can include the pressing plate structure 3, the pressing plate structure 3 with fixed connection of crossbeam 1. The pressing plate structure 3 can include upper pressing plate and lower pressing plate, the upper pressing plate, lower pressing plate are located respectively both sides of crossbeam 1 and are locked through bolt, to realize the fixed connection with crossbeam 1. Further, the upper pressing plate can be provided with stabilizing plate 4 between crossbeam 1, the stabilizing plate 4 includes the two parts of the included angle setting, its cross section structure can present a right angle structure, the upper pressing plate is provided with the protruding structure matching with stabilizing plate 4. Thus, by setting up stabilizing plate 4, the stability of the structure connection of pressing plate structure 3 and crossbeam 1 is guaranteed. The fixed support 5 can include upper support, connecting plate and lower support, the connecting plate is used for with fixed connection of lower pressing plate, the upper support, lower support can be interval setting, and fixed connection is established respectively in both ends of connecting plate. Among them, the upper support can be used for fixed lifting assembly. The lower support can be used for installing movable support 6.

[0036] Please refer to Figures 1-5In one of the embodiments of the utility model, the movable support 6 is used for providing the installation position of the roller 7 and the detection assembly, the end of the movable support 6 is rotationally connected with the fixed support 5, and specifically, the movable support 6 can be rotationally connected with the lower support through a supporting shaft. The roller 7 is rotationally arranged on the movable support 6 and is located at one end away from the fixed support 5, and the detection assembly is used for detecting the rotating speed of the roller 7 and uploading to the host computer so as to monitor the speed of the equipment, which can be an inductive sensor, a photoelectric sensor, a magnetic chain observer, a laser sensor and the like. Specifically, as an example, the detection assembly can include a probe structure 8 and an inductive element 9, the inductive element 9 can be a magnetic steel structure fixedly arranged at the end position of the roller 7, and the probe structure 8 (which can be a Hall element) can be fixedly arranged on the movable support 6, and when the magnetic steel is rotated by the roller 7, the rotating speed of the roller 7 can be obtained by the inductive conversion of the probe structure 8 to the inductive element 9.

[0037] Please refer to Figures 1-5 In one of the embodiments of the utility model, the lifting assembly is used for driving the movable support 6 to rotate, and the rotating center is the rotating connection position of the movable support 6 and the fixed support 5. The lifting assembly can be a rotating motor, a hydraulic rod, a pneumatic rod or other driving structure, which can drive the movable support 6 to rotate and drive the roller 7 to act to separate / close to the conveying belt 2 of the belt machine. As an example, the lifting assembly includes a circular shaft 10, a handle 12 and a traction rope 11, the circular shaft 10 is rotationally connected on the upper support, the handle 12 is arranged in parallel with the circular shaft 10 and is connected on the circular shaft 10 through a connecting rod, one end of the traction rope 11 is wound on the circular shaft 10, and the other end is fixedly connected with the movable support 6. The traction rope 11 can be a steel wire rope. In use, the handle 12 can conveniently and labor-savingly drive the circular shaft 10 to rotate and wind the traction rope 11, so that the roller 7 on the movable support 6 is lifted to separate from the conveying belt 2 through the traction rope 11. Further, a blocking ring is sleeved on the circular shaft 10, and a rope blocking shaft 14 is arranged on the upper support. The blocking ring, the rope blocking shaft 14 and the upper support cooperatively form a frame shape, which can be used for limiting the range in the winding process of the steel wire rope.

[0038] Please refer to Figures 1-5In one of the embodiments of the utility model, the fixed support 5 can be further provided with a brake structure 13, the brake structure 13 is fixedly installed on the fixed support 5 and is matched with the position of the roller 7. The roller 7 can contact the brake structure 13 when the movable support 6 rotates. The brake structure 13 can quickly slow down the roller 7 after the roller 7 is lifted and contacts the brake structure 13, facilitating the speed reduction / zero speed of the roller 7. The brake structure 13 can include a brake plate and a brake pad, one end of the brake plate is fixedly connected to the lower support, the other end is fixedly connected with the brake pad, and the brake pad can be in an arc structure to better contact the roller 7. The brake pad and the brake plate are detachably fixedly connected through a fixing piece to facilitate replacement.

[0039] The working principle of the utility model is as follows:

[0040] Under normal conditions, the movable support 6 is in a drooping state under the action of gravity, the roller 7 contacts the lower belt of the belt conveyor, and when the conveyor belt 2 operates, the lower belt of the belt conveyor rubs the roller 7 to rotate, the sensor probe detects the operating speed of the roller 7 and transmits it to the host computer to detect the rotating speed of the equipment.

[0041] When the speed detection assembly itself needs to be confirmed and tested, the handle 12 can drive the rotation of the round shaft 10 and wind the traction rope 11, so that the roller 7 on the movable support 6 is lifted off the conveyor belt 2 through the traction rope 11. Then the roller 7 is accelerated / slowed down manually to verify whether the speed detection result of the roller 7 (belt conveyor) is accurate. The deceleration process can be assisted by the brake structure 13.

[0042] When the belt conveyor needs to be repaired, the belt conveyor is turned off, at the same time, the handle 12 is rotated to drive the rotation of the round shaft 10 and tighten the steel wire rope, so that the roller 7 is pulled up from the lower belt of the belt conveyor. The rotating roller 7 will rub the brake pad until the speed of the roller 7 is reduced to 0. At this time, the probe detects that the speed of the roller 7 is reduced or 0, and the signal is transmitted to the host computer. The host computer controls the belt conveyor to stop working, and the belt conveyor broadcasts an alarm voice signal along the line. After the test is completed, the handle 12 is rotated in the opposite direction, and the roller 7 is lowered to the initial state by its own weight. The roller 7 at zero speed contacts the belt conveyor, so that the belt conveyor is in a zero speed state after stopping, avoiding the false detection caused by the slip of the belt conveyor. After the repair is completed, the belt conveyor needs to be restarted manually.

[0043] The above embodiment of the utility model is described in detail, but the content can only be the preferred embodiment of the utility model and cannot be considered as limiting the scope of the utility model. Any equivalent change and improvement within the scope of the utility model application shall still belong to the scope of the claims of the utility model.

Claims

1. A speed detection device for mining transportation, characterized in that, include: Fixed bracket (5), which is fixedly installed on the crossbeam (1) of the belt conveyor; Movable bracket (6), the end of which is rotatably connected to the fixed bracket (5); A roller (7) is rotatably mounted on the movable support (6) and located at one end away from the fixed support (5); A detection component is used to detect the rotational speed of the roller (7); The lifting component is used to drive the movable support (6) to rotate, and the rotation center is the rotational connection position between the movable support (6) and the fixed support (5).

2. The speed detection device for mine transportation according to claim 1, characterized in that, The fixed bracket (5) includes a pressure plate structure (3), which is fixedly connected to the crossbeam (1).

3. A speed detection device for mine transportation according to claim 2, characterized in that, The pressure plate structure (3) includes an upper pressure plate and a lower pressure plate, which are located on both sides of the crossbeam (1) and locked with bolts.

4. A speed detection device for mine transportation according to claim 3, characterized in that, A stabilizing plate (4) is provided between the upper pressure plate and the crossbeam (1). The stabilizing plate (4) is set at an angle, and the upper pressure plate is provided with a protruding structure that matches the stabilizing plate (4).

5. A speed detection device for mine transportation according to claim 4, characterized in that, The fixed bracket (5) includes an upper bracket, a connecting plate and a lower bracket. The connecting plate is fixedly connected to the lower pressure plate, and the upper bracket and the lower bracket are respectively fixedly connected to both ends of the connecting plate.

6. A speed detection device for mine transportation according to claim 5, characterized in that, A brake structure (13) is also provided, which is fixedly installed on the fixed bracket (5) and matches the position of the roller (7).

7. A speed detection device for mine transportation according to claim 6, characterized in that, The brake structure (13) includes a brake plate and a brake pad. One end of the brake plate is fixedly connected to the lower bracket, and the other end is fixedly connected to the brake pad. The brake pad has an arc-shaped structure.

8. A speed detection device for mine transportation according to claim 7, characterized in that, The brake pads and the brake plate are detachably and fixedly connected by a fastener.

9. A speed detection device for mine transportation according to claim 8, characterized in that, The lifting assembly includes a round shaft (10), a handle (12), and a traction rope (11). The round shaft (10) is rotatably connected to the upper support. The handle (12) is arranged parallel to the round shaft (10) and connected to the round shaft (10) via a connecting rod. One end of the traction rope (11) is wound around the round shaft (10), and the other end is fixedly connected to the movable support (6).

10. A speed detection device for mine transportation according to claim 9, characterized in that, A retaining ring is fitted on the round shaft (10), and a rope-blocking shaft (14) is provided on the upper bracket.

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