CN104847817B - A kind of axial Photoinduction type elevation scheme Moving plate beat monitoring device and method - Google Patents

Abstract

The invention discloses a device for monitoring the deflection of an axial photosensitive hoist brake disc, which comprises a base and a slide bar, the slide bar can slide along the central axis of the base; the inner side walls of the two sides of the central axis of the base A light source generating unit and a light source receiving unit are arranged symmetrically. The invention converts the axial runout of the brake disc of the hoist into the movement of the square through hole above the slide rod, obtains the axial runout value of the brake disc by using the principle of light perception, and obtains the deflection of the brake disc of the hoist through conversion; Real-time monitoring of brake disc deflection. The invention can monitor the deflection of the brake disc of the hoist in real time without changing the original lifting equipment, realize the monitoring of the state of the brake disc of the hoist, and has certain guiding significance for the monitoring of the operating state of the brake system of the hoist. The axial photosensitive hoist brake disc deflection monitoring device has a simple structure and is easy to use, which reduces the participation of workers and improves the correct rate of fault diagnosis of the hoist brake disc deflection.

Description

Device and method for monitoring brake disc deflection of axial light-sensitive hoist

technical field

The invention belongs to the field of real-time monitoring of a brake disc of a mine hoist, and in particular relates to an axial light-sensing type hoist brake disc deflection monitoring device and method.

Background technique

Mine hoist is one of the important and key equipment in mines. It is mainly used in coal mines, metal mines and non-metal mines for hoists and decentralized personnel to lift coal, ore, and transport materials and equipment. It is an important means of transportation to connect the well and the underground. It occupies a very important position in the mine and is an important equipment of the mine. Therefore, the safe, reliable, effective and high-speed operation of the hoist is directly related to the production status and economic benefits of the enterprise. The brake is one of the indispensable and important components of the hoist, and it is also the most critical and last safety guarantee device of the hoist. Therefore, the reliability of the brake is directly related to the safe operation of the hoist. At present, disc brakes are widely used in mining hoists, in which the hoist brake disc is installed on the drum of the hoist, which is an important part of the mine hoist. The braking process of the hoist is realized by the friction force generated by the friction between the hoist brake disc and the brake shoe. The performance of the brake disc of the hoist directly affects the normal production of the mine and the safety of the coal mine.

The "National Coal Mine Safety Production Regulations" stipulates: "The runout of the end face of the brake disc of the mine hoist is not more than 0.50mm before use, and not more than 1mm during use." In recent years, the brake disc of the disc brake system of the mine hoist The problem of pendulum overrun is relatively common. The phenomenon is: the brake seat shakes, the brake shoe moves, and the gap between the brake disc and the brake shoe cannot be kept consistent. When braking, the main shaft moves, the braking torque is seriously insufficient, there is a danger of a sports car at any time, and personal safety is threatened. Therefore, it is very important to be able to monitor the deflection of the brake disc in real time during the operation of the hoist.

At present, some domestic and foreign scholars have proposed some preventive measures for the overrun problem of the brake disc of the hoist, mainly focusing on processing, manufacturing, transportation, storage and installation, etc., to ensure the quality of the brake disc. However, during the operation of the hoist, it is mainly to use human hearing and vision to judge the deflection of the brake disc beyond the limit, such as cylinder stuck, oil circuit blockage, etc. This method has hysteresis and may cause misjudgment occur.

Contents of the invention

Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a device and method for monitoring the deflection of the brake disc of the axial light-sensitive hoist, which can measure the deflection of the brake disc of the hoist in real time through the principle of light sensing. In this way, the fault monitoring of the brake disc of the hoist is realized.

Technical solution: In order to achieve the above object, the present invention adopts the following technical solution:

An axial light-sensitive hoist brake disc deflection monitoring device, comprising a base and a slide bar, the tail of the slide bar passes through one end of the base along the central axis of the rectangular base, and is located in the base , the slide bar can slide along the central axis of the base; the inner sides of the side walls on both sides of the central axis of the base are symmetrically provided with a light source generating unit and a light receiving unit, and the light source generating unit and the light receiving unit are opposite to each other. There are square holes of the same size on the same axis on the two sides of the two sides, which are the No. 1 light transmission hole and the No. 2 light transmission hole, and the sliding rod is provided with a square through hole of the same size as the square hole. .

Further, in the present invention, the light source generating unit includes a light source generating box fixed on the side wall of the base, and a power supply, a light source, and a No. 1 lens that are sequentially connected inside the light source generating box ;

The light source receiving unit includes a light source receiving box fixed on the side wall of the base, and a signal processing unit, a photosensitive device and a second lens arranged in sequence inside the light source receiving box and connected sequentially.

Furthermore, in the present invention, the light source, No. 1 lens and No. 1 light transmission hole are on the same axis as the photosensitive device, No. 2 lens and No. 2 light transmission hole.

Further, in the present invention, a slide plate is fixed vertically at the tail of the slide bar, a pair of guide rods are fixed symmetrically on the upper and lower parts of the slide plate, and a base plate arranged parallel to the slide plate is connected to the tail of the guide rods, so The substrate is fixedly connected to the base;

A spring threaded on the guide rod is arranged between the base plate and the slide plate.

Further, in the present invention, a No. 1 guide hole is symmetrically arranged on the base plate up and down, and a No. 1 guide sleeve is installed in the No. 1 guide hole, and the guide rod is in clearance fit with the No. 1 guide sleeve.

Further, in the present invention, a No. 2 guide hole is provided on the front side wall of the base, and a No. 2 guide sleeve is installed in the No. 2 guide hole, and the sliding rod is in clearance fit with the No. 2 guide sleeve;

The base is located inside the rectangular housing, the rear side wall of the base is closely attached to the inner wall of the tailgate of the housing, and the central axis of the base and the housing are on the same axis; the housing A No. 3 guide hole is provided on the front baffle of the body, and a No. 3 guide sleeve is installed in the No. 3 guide hole, and the slide bar is in clearance fit with the No. 3 guide sleeve.

A method for monitoring the deflection of the brake disc of an axial light-sensitive hoist, which is placed on a test point on the brake disc of the hoist for monitoring, including the following steps:

1) Initial state: the square through hole is on the same axis as the No. 1 light transmission hole and the No. 2 light transmission hole, and the spring is in a compressed state;

2) Motion offset: the rotation of the brake disc yaws, which drives the slide bar to undergo a displacement that changes with time, and the square through hole and the No. The light quantity of the photosensitive device changes accordingly, and the deflection of the brake disc is in a linear relationship with the light quantity reaching the photosensitive device;

3) Signal processing: the light sensing device outputs change signals, which are processed by the signal processing unit and sent to the industrial computer to realize real-time monitoring of the brake disc deflection.

Further, in the present invention, the head of the slide bar is provided with a roller against the brake disc. In step 1), the direction of the angular velocity of the roller is the same as the direction from the measuring point to the center of the main shaft of the hoist. Consistent, that is, the linear velocity direction of the brake disc at the measuring point is perpendicular to the angular velocity direction of the roller in the end face of the brake disc.

Furthermore, in the present invention, two or more test points are selected for simultaneous monitoring.

Beneficial effects: the present invention converts the axial runout of the brake disc of the hoist into the movement of the square through hole above the slide rod, obtains the axial runout value of the brake disc by using the principle of light perception, and obtains the deflection of the brake disc of the hoist through conversion; The changing signal of the photosensitive device is processed by the signal processing unit and then transmitted to the industrial computer through the wireless sending chip, so as to realize real-time monitoring of the deflection of the brake disc of the hoist. The invention can monitor the deflection of the brake disc of the hoist in real time without changing the original lifting equipment, realize the monitoring of the state of the brake disc of the hoist, and has certain guiding significance for the monitoring of the operating state of the brake system of the hoist. The axial photosensitive hoist brake disc deflection monitoring device has a simple structure and is easy to use, which reduces the participation of workers and improves the correct rate of fault diagnosis of the hoist brake disc deflection.

Description of drawings

Fig. 1 is the working schematic diagram of device of the present invention;

Fig. 2 is the internal structure schematic diagram of device of the present invention;

Fig. 3 is the schematic diagram of the base of the device of the present invention;

In the figure: 1-brake support, 2-brake, 3-brake disc, 4-hoist reel, 5-support plate of the device of the present invention, 6-devices of the present invention, 7-main shaft of the hoist, 8-bearing seat . 19-Photosensitive device, 20-Light source receiving box, 21-Lens 2, 22-Light hole 2, 23-Guide sleeve, 24-Square through hole, 25-Light hole 1, 26-Lens 1, 27- Light source, 28-power supply, 29-light source generation box, 30-spring, 31-guide rod.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 2 and 3, an axial photosensitive hoist brake disc deflection monitoring device includes a base 10 and a slide bar 14, and the tail of the slide bar 14 is along the central axis of the rectangular base 10. Through one end of the base 10, located in the base 10, the slide bar 14 can slide along the central axis of the base 10; the inner sides of the side walls near the front plate on both sides of the central axis of the base 10 are symmetrically provided with light source generating units With the light source receiving unit, the light source generating unit and the light source receiving unit are provided with square holes of the same size on the same axis on the opposite two sides, which are respectively the No. 1 light transmission hole 25 and the No. 2 light transmission hole 22, and the slide bar 14 is provided with a square through hole 24 of the same size as the square hole.

Wherein, the light source generating unit includes a light source generating box 29 fixed on the side wall of the base 10, and a power supply 28, a light source 27 and a No. 1 lens 26 connected sequentially inside the light source generating box 29; the light source receiving unit It includes a light source receiving box 20 fixed on the side wall of the base 10 , and a signal processing unit 18 , a photosensitive device 19 and a second lens 21 which are sequentially connected inside the light source receiving box 20 . Wherein, the light source 27 , the No. 1 lens 26 and the No. 1 light transmission hole 25 are on the same axis as the photosensitive device 19 , the No. 2 lens 21 and the No. 2 light transmission hole 22 .

The tail portion of the slide bar 14 is vertically fixed with a slide plate 17, and a pair of guide rods 31 are symmetrically fixed on the upper and lower parts of the slide plate 17. The tail portion of the guide rods 31 is connected with a base plate 15 arranged in parallel with the slide plate 17, and the base plate 15 is fixedly connected to the base 10; A spring 30 is provided between the base plate 15 and the slide plate 17 , which is threaded on the guide rod 31 , so that the slide plate 17 and the slide bar 14 move together with the spring relative to the fixed base plate 15 . The substrate 15 is symmetrically provided with a No. 1 guide hole up and down, and a No. 1 guide sleeve 16 is installed in the No. 1 guide hole, and the guide rod 31 is in clearance fit with the No. 1 guide sleeve 16 .

The front side wall of the base 10 is provided with a No. 2 guide hole, and a No. 2 guide sleeve 23 is installed in the No. 2 guide hole, and the slide bar 14 is in clearance fit with the No. 2 guide sleeve 23; the base 10 is located in the rectangular housing 9 Inside, the housing 9 is fixed on the foundation, the rear side wall of the base 10 is closely attached to the inner wall of the tailgate of the housing 9, and the central axes of the base 10 and the housing 9 are on the same axis; the front of the housing 9 The baffle plate 11 is provided with a No. 3 guide hole, and a No. 3 guide sleeve 12 is installed in the No. 3 guide hole, and the slide bar 14 is in clearance fit with the No. 3 guide sleeve 12 .

Example 1

As shown in accompanying drawing 1, the main shaft device of hoist comprises hoist reel 4, hoist main shaft 7, main bearing 8. The brake disc 3 is fixed on the end face of the hoist drum 4, the hoist drum 4 is fixed on the hoist main shaft 7, the hoist main shaft 7 is fixed on the bearing seat 8 through the main bearing, and the housing 9 of the device 6 of the present invention passes through the The support plate 5 is fixed on the brake support 1 . When the hoist works, the hoist main shaft 7 drives the hoist reel 4 to rotate, and the brake disc 3 rotates simultaneously, and the device 6 of the present invention starts to work. If a fault occurs in the lifting system during operation and requires safety braking or working braking during normal operation, the brake shoe of the brake 2 is close to the brake disc 3 to generate a braking torque to stop it.

The device 6 of the present invention is placed on the test point on the brake disc 3 of the hoist to monitor. The head of the slide bar 14 is provided with a roller 13 that leans against the brake disc 3. Select a suitable measuring point on the disk 3, adjust the rotation position of the slide bar 14 and the slide plate 17, so that the angular velocity direction of the roller 13 on the detection device is consistent with the direction from the measuring point to the center of the main shaft of the hoist, that is, the brake disc 3 is in this position. The linear velocity direction of the measuring point is perpendicular to the angular velocity direction of the roller 13 in the end face of the brake disc 3 . Under the premise of ensuring that the movement of the brake oil cylinder is not interfered with, the installation position of the device 6 of the present invention on the brake support 1 is determined, so that the two springs 30 that are sheathed on the guide rod 31 are in a compressed state, and at the same time the output of the device of the present invention is The signal is the strongest. For measurement accuracy, multiple sets of devices of the present invention can be installed at appropriate positions on the brake support, and multiple test points can be selected for simultaneous monitoring.

A method for monitoring the deflection of a brake disc of an axial photosensitive hoist, specifically comprising the following steps:

1) Initial state: when the device is at the initial moment, the square through hole 24 is on the same axis as the No. 1 light transmission hole 25 and the No. 2 light transmission hole 22, and the spring 30 is in a compressed state;

2) Movement offset: the rotation of the brake disc 3 yaws, which drives the displacement of the sliding rod 14 that changes with time, and the square through hole 24 and the No. value, the amount of light reaching the photosensitive device 19 changes accordingly, and the amount of deflection of the brake disc 3 is linearly related to the amount of light reaching the photosensitive device 19;

3) Signal processing: the light sensing device 19 outputs a change signal, which is processed by the signal processing unit 18 and transmitted to the industrial computer through the wireless sending chip to realize real-time monitoring of the deflection of the brake disc 3 of the hoist.

The present invention converts the axial runout of the brake disc 3 of the hoist into the movement of the square through hole 24 above the slide rod 14, obtains the axial runout value of the brake disc 3 by using the principle of light perception, and obtains the deflection of the brake disc 3 of the hoist after conversion amount; when the deflection of the brake disc 3 of the hoist is 0, the light sensor 19 receives the most light, and the output signal is the strongest; The square through hole 24 of the square through hole 24 is misaligned with the No. 1 light transmission hole 25 and the No. 2 light transmission hole 22, so that the light reaching the photosensitive device 19 is reduced, and the output signal is also correspondingly reduced; the signal changed by the photosensitive device 19 is passed through the signal processing unit 18 After processing, it is transmitted to the industrial computer through the wireless sending chip, so as to realize the real-time monitoring of the deflection of the brake disc 3 of the hoist. The invention can monitor the deflection of the brake disc of the hoist in real time without changing the original hoisting equipment; in order to ensure the accuracy of the measured data, the device can be used at the measuring points on both sides of the hoist at the same time, through the signal processing unit 18 to take the average value; to realize the monitoring of the brake disc state of the hoist has certain guiding significance for the monitoring of the operating state of the brake system of the hoist.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also possible. It should be regarded as the protection scope of the present invention.

Claims (9)

1. A kind of 1. axial Photoinduction type elevation scheme Moving plate beat monitoring device, it is characterised in that：Including pedestal (10) and slide bar (14), axis direction of the afterbody of the slide bar (14) along rectangular pedestal (10) passes through one end of pedestal (10), is located at In pedestal (10), the slide bar (14) can be slided along the axis direction of pedestal (10)；The axis both sides of the pedestal (10) Inside sidewalls be arranged with light source generation and light source receiving unit, the light source generation and light source receiving unit exist Two relative sides are provided with the square hole of formed objects on the same axis, respectively No.1 loophole (25) and No. two it is saturating Unthreaded hole (22), the slide bar (14) are provided with the square through hole (24) with the square hole formed objects.
2. 2. axial Photoinduction type elevation scheme Moving plate beat monitoring device according to claim 1, it is characterised in that：The light Casing (29) occurs for the light source that source generating unit includes being fixed in the side wall of the pedestal (10), and is located at the light source and occurs Power supply (28), light source (27) and the No.1 lens (26) being sequentially connected inside casing (29)；

   The light source that the light source receiving unit includes being fixed in the side wall of pedestal (10) receives casing (20), and is located at the light Source receives signal processing unit (18), light sensitive device (19) and No. two lens (21) being sequentially connected inside casing (20).
3. 3. axial Photoinduction type elevation scheme Moving plate beat monitoring device according to claim 2, it is characterised in that：The light Source (27), No.1 lens (26) and No.1 loophole (25) and the light sensitive device (19), No. two lens (21) and No. two printing opacities Hole (22) is on the same axis.
4. 4. axial Photoinduction type elevation scheme Moving plate beat monitoring device according to claim 1, it is characterised in that：The cunning The afterbody of bar (14) is vertically and fixedly provided with slide plate (17), and the top and the bottom of the slide plate (17) are symmetrically fixed with a pair of guide rods (31), institute The afterbody for stating guide rod (31) is connected with the substrate (15) being be arranged in parallel with the slide plate (17), and the substrate (15) is fixedly connected on On the pedestal (10)；

   The spring (30) being set on the guide rod (31) is provided between the substrate (15) and slide plate (17).
5. 5. axial Photoinduction type elevation scheme Moving plate beat monitoring device according to claim 4, it is characterised in that：The base Plate (15) is symmetrical above and below to be provided with No.1 pilot hole, and No.1 guide sleeve (16), the guide rod are provided with the No.1 pilot hole (31) coordinate with No.1 guide sleeve (16) gap.
6. 6. according to any described axial Photoinduction type elevation scheme Moving plate beat monitoring devices of claim 1-5, it is characterised in that： The front side wall of the pedestal (10) is provided with No. two pilot holes, and No. two guide sleeves (23), institute are provided with No. two pilot holes Slide bar (14) is stated with No. two guide sleeve (23) gaps to coordinate；

   The pedestal (10) is internal located at the housing (9) of rectangle, the rear wall of the pedestal (10) and the rear gear of the housing (9) Plate inwall is brought into close contact, and the axis of pedestal (10) and housing (9) is on the same axis；The front apron (11) of the housing (9) No. three pilot holes are provided with, No. three guide sleeves (12), the slide bar (14) and No. three guiding are installed in No. three pilot holes (12) gap is covered to coordinate.
7. A kind of 7. method of axial Photoinduction type elevation scheme Moving plate beat monitoring device, it is characterised in that：It is placed on elevation scheme Test point on Moving plate (3) is monitored, and is comprised the following steps：

   1) original state：Square through hole (24) and No.1 loophole (25) and No. two loopholes (22) on the same axis, spring (30) it is in confined state；

   2) motion excursion：Brake disc (3) rotates beat, and the displacement changed over time with moving slide-bar (14) is described square logical Hole (24) is corresponding to No.1 loophole (25) and No. two loopholes (22) to produce the dislocation value changed over time, reaches light sensitive device (19) light quantity respective change, the beat amount of the brake disc (3) and the light quantity for reaching light sensitive device (19) are linear；

   3) signal transacting：Light sensitive device (19) the exporting change signal, work is sent to after signal processing unit (18) processing Control machine, realize the real-time monitoring of brake disc (3) beat.
8. 8. the method for axial Photoinduction type elevation scheme Moving plate beat monitoring device according to claim 7, it is characterised in that： The head of the slide bar (14) is provided with the roller (13) acted against in brake disc (3), in step 1), the angle of the roller (13) Velocity attitude is consistent with the sensing at the test point to main shaft of hoister center, i.e., brake disc (3) is in the linear velocity side of the test point To the angular speed direction with roller (13) in brake disc (3) end face it is vertical.
9. 9. the method for the axial Photoinduction type elevation scheme Moving plate beat monitoring device according to claim 7 or 8, its feature exist In：Choose two or more test points while be monitored.