CN213386397U

CN213386397U - Scrape trigger chain breakage and jam early warning protection system

Info

Publication number: CN213386397U
Application number: CN202022265259.2U
Authority: CN
Inventors: 姚伏龙; 黄培燕
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-06-08
Anticipated expiration: 2030-10-12

Abstract

The utility model relates to the field of scraper machines, and discloses a scraper machine chain breakage and blockage early warning protection system, which comprises a tail wheel, a speed measuring device and an early warning protection device; the tail wheel is used for assisting the chain motion of the scraper conveyor; the speed measuring device is used for detecting the rotary motion of the tail wheel; the early warning protection device is electrically connected with the speed measuring device and is used for giving an alarm and controlling the scraper conveyor to stop running when the speed measuring device detects that the rotation speed of the tail wheel is reduced or stops rotating. The utility model discloses detect and the early warning according to speed sensor and alarm device to the rotational speed of tailwheel, carry out the early warning when scraping trigger broken chain or blockking up and leading to the tailwheel rotational speed to reduce, in time park scraping trigger and supporting transportation equipment, avoid scraping trigger broken chain and the stifled occurence of failure of material.

Description

Scrape trigger chain breakage and jam early warning protection system

Technical Field

The utility model relates to a scrape the trigger field, concretely relates to scrape trigger chain rupture and jam early warning protection system.

Background

The series products of the scraper blade machine are widely applied to industries and departments of metallurgy, building materials, electric power, chemical industry, cement, ports, docks, coal, mines, grain and oil, food, feed and the like. The scraper conveyor is a continuous conveyor for bulk material conveyed by means of a moving scraper chain in a closed rectangular-section housing. The chain of the scraper conveyor can be divided into a top chain and a bottom chain, the carrying section is the bottom chain, and almost all chain breakage faults occur on the first breakage of the bottom chain.

When a chain breakage accident of the scraper conveyor occurs, the scraper conveyor is blocked or overloaded, generally, a head wheel and a tail wheel do not rotate, a bottom chain is positioned at the bottom and cannot be detected through a contact detection method, and early warning and reminding cannot be carried out when the chain breakage is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the problem that the scraper chain machine that prior art exists broke the chain, providing a scraper chain machine chain breakage and jam early warning protection system, this scraper chain machine chain breakage and jam early warning protection system utensil in time send early warning and control signal's effect when transshipping and chain breakage.

In order to achieve the above object, the present invention provides a scraper chain breakage and blockage early warning protection system, which comprises a tail wheel, a speed measuring device and an early warning protection device; the tail wheel is used for assisting the chain motion of the scraper conveyor; the speed measuring device is used for detecting the rotary motion of the tail wheel; the early warning protection device is electrically connected with the speed measuring device and is used for giving an alarm and controlling the scraper conveyor to stop running when the speed measuring device detects that the rotation speed of the tail wheel is reduced or stops rotating.

Preferably, the tail wheel comprises a bearing, a bearing positioning plate, a bolt and a shaft end cover; the bearing is used for supporting the tail wheel and reducing the friction coefficient of the tail wheel in the motion process; the bearing positioning plate is used for fixing the bearing, the bolt is used for fixing the bearing positioning plate, and the shaft end cover is used for sealing the bearing.

Preferably, the speed measuring device is arranged on the shaft end cover or the tail wheel shaft and used for detecting the rotating speed of the bearing.

Preferably, the bolts are provided with a plurality of bolts which are uniformly distributed on the bearing positioning plate or the tail wheel shaft.

Preferably, the tail pulley comprises a tail pulley shell and a tail pulley fixing bracket; the tail wheel shell follows the tail wheel to rotate, the tail wheel fixing support is arranged on one side of the tail wheel, and the speed measuring device is fixed on the tail wheel fixing support.

Preferably, the tail wheel also comprises 6 nuts, and the 6 nuts are uniformly arranged on the tail wheel shell.

Preferably, the speed measuring device comprises a speed sensor for detecting the rotation speed of the tail wheel.

Preferably, the early warning protection device comprises an intelligent tachometer and an audible and visual alarm; the intelligent tachometer is electrically connected with the speed measuring device and used for receiving the rotating speed of the tail wheel detected by the speed measuring device and sending a control signal and an alarm signal; the audible and visual alarm is electrically connected with the intelligent tachometer and used for giving an alarm.

Preferably, the intelligent tachometer comprises a controller, the controller is arranged in the intelligent tachometer, and the controller sends out a control signal and an alarm signal according to the rotation speed of the tail wheel detected by the speed measuring device.

Preferably, the controller and the speed measuring device use the same set of direct current switching power supplies as a power supply.

According to the technical scheme, the rotation speed of the tail wheel can reflect the phenomenon most before or when the chain breakage fault occurs, the rotation speed of the tail wheel is different between normal rotation and locked rotation or chain forging, the rotation speed is higher than that of the fault in normal rotation, the running state of the scraper conveyor can be monitored by detecting the rotation speed of the tail wheel, the rotation speed of the tail wheel is lower than the normal value before the chain breakage occurs, the scraper conveyor can be stopped in time through monitoring of the speed measuring device and processing of the early warning protection device, and the chain breakage accident is prevented; and when the chain breakage accident happens, the tail wheel can show no rotating speed, and after the monitoring of the speed measuring device and the processing of the early warning protection device, a parking signal is sent out to interlock the upper and lower equipment to park, so that the problem of material pressure equipment caused by the chain breakage accident can be avoided, and the accident is further enlarged.

Drawings

Fig. 1 is a schematic diagram of an alarm system according to an embodiment of the present invention;

fig. 2 is a schematic view of a tail wheel according to an embodiment of the present invention;

FIG. 3 is a schematic view of a tail wheel according to another embodiment of the present invention;

fig. 4 is a schematic view of a tail wheel according to another embodiment of the present invention.

Description of the reference numerals

100. An alarm system; 1. a tail wheel; 2. a speed measuring device; 3. an alarm device; 11. a bearing; 12. a bearing positioning plate; 13. a bolt; 14. a shaft end cover; 15. a tail wheel housing; 16. a tail wheel fixing bracket; 17. a nut; 18. speed measuring teeth; 21. a speed sensor; 31. an intelligent tachometer; 311. a controller; 32. an audible and visual alarm.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implying any number of indicated technical features, without on the contrary indicating the same. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or combinations thereof may be present or added.

Further, terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

As shown in fig. 1, the utility model discloses a scraper chain breakage and blockage early warning protection system 100, which comprises a tail wheel 1, a speed measuring device 2 and an early warning protection device 3; the tail wheel 1 is used for assisting the chain motion of the scraper conveyor; the speed measuring device 2 is used for detecting the rotary motion of the tail wheel 1; the early warning protection device 3 is electrically connected with the speed measuring device 2 and is used for giving an alarm and controlling the scraper conveyor to stop running when the speed measuring device 2 detects that the rotation speed of the tail wheel 1 is reduced or stops rotating.

The rotation speed of the tail wheel 1 can reflect the phenomenon most when chain breakage faults occur, the rotation speed of the tail wheel 1 is different between normal rotation and locked rotation or chain forging, the rotation speed is higher than that of the fault when normal, the running state of the scraper conveyor can be monitored by detecting the rotation speed of the tail wheel 1, the rotation speed of the tail wheel 1 is lower than a normal value before chain breakage occurs, and the scraper conveyor can be stopped in time by monitoring of the speed measuring device 2 and processing of the early warning protection device 3 to prevent chain breakage accidents; and when the chain breakage accident happens, the tail wheel 1 can show no rotating speed, and after the monitoring of the speed measuring device 2 and the processing of the early warning protection device 3, a parking signal is sent out to interlock the upper and lower equipment to park, so that the problem that the material bet presses the equipment due to the chain breakage accident can be avoided, and the accident is further enlarged.

As shown in fig. 2, the tail wheel 1 includes a bearing 11, a bearing positioning plate 12, a bolt 13, and a shaft end cover 14; the bearing 11 is used for supporting the tail wheel 1 and reducing the friction coefficient of the tail wheel 1 in the motion process; the bearing positioning plate 12 is used for fixing the bearing 11, the bolt 13 is used for fixing the bearing positioning plate 12, the shaft end cover 14 is used for sealing the bearing 11, and the speed measuring device 2 is arranged on the shaft end cover 14 and used for detecting the rotating speed of the bearing 11. When the chain is broken, need set up speed sensor 2 in tailwheel 1 department, speed sensor 2 detects the rotational speed of tailwheel 1, is provided with bearing 11, bearing locating plate 12 and axle head cover 14 in tailwheel 1, and for the rotational speed of conveniently detecting tailwheel 1, the rotational speed of detecting the axle is the most effective scheme, because bearing locating plate 12 passes through bolt 13 with the axle and fixes together, consequently installs detection device on axle head cover 14, conveniently detects the rotation of axle.

The bolts 13 are provided with a plurality of bolts which are uniformly distributed on the bearing positioning plate 12. When the tail wheel 1 rotates, the shaft also rotates, the bearing positioning plate 12 rotates along with the shaft, the fixing plate of the bearing 11 is fixed by the bolts 13 to be more stable, meanwhile, the protruding parts of the bolts 13 are used for detecting the speed measuring device 2, the protruding parts of the bolts 13 rotate along with the shaft of the tail wheel 1, the distance between the bolts 13 and the shaft center is firstly measured, then the distance between the bolts 13 and the shaft end cover 14 is measured, and therefore detection data of the speed measuring device 2 are determined, and the speed measuring device 2 detects according to the rotating speed of the protruding parts of the bolts 13 to determine the rotating speed of the shaft of the tail wheel 1.

The utility model discloses a speed sensor 2 includes speedtransmitter 21, and speedtransmitter 21 can also set up to other kinds of switches for proximity switch, be suitable for can, speedtransmitter 21 detects the rotation rate of tailwheel 1.

Further, the early warning protection device 3 comprises an intelligent tachometer 31 and an audible and visual alarm 32; the intelligent tachometer 31 is electrically connected with the speed measuring device 2, and is used for receiving the rotating speed of the tail wheel 1 detected by the speed measuring device 2 and sending out a control signal and an alarm signal; the audible and visual alarm 32 is electrically connected with the intelligent tachometer 31 and used for giving an alarm. Set up intelligent tachometer 31 and audible-visual annunciator 32 in early warning protection device 3, signal transmission to intelligent tachometer 31 through speed sensor 2 detects, intelligent tachometer 31 discerns according to the signal that speed sensor 2 detected, do not send out alarm and control signal when speed sensor 2 detects the speed normal rotation of tailwheel 1, when the rotational speed of tailwheel 1 reduces or when stopping, intelligent tachometer 31 makes the judgement according to signal status, intelligent tachometer 31 sends control signal control scraper machine and shuts down after handling the judgement to speed signal, audible-visual annunciator 32 sends out the alarm simultaneously, remind and overhaul for the workman, avoid scraper machine broken chain and because of the gamble pressure accident that the broken chain leads to.

The intelligent tachometer 31 comprises a controller 311, the controller 311 is arranged in the intelligent tachometer 31, and the controller 311 sends out a control signal and an alarm signal according to the rotation speed of the tail wheel 1 detected by the speed measuring device 2. The intelligent tachometer 31 is provided with a controller 311, the controller 311 is used for controlling the scraper conveyor and the audible and visual alarm 32, and the controller 311 and the speed measuring device 2 use the same group of direct-current switching power supplies as a power supply; the utility model discloses a controller 311 can utilize intelligent tachometer logic to realize also can use the logic function realization of PLC controller.

As another embodiment of the present invention, as shown in fig. 3, a system 100 for protecting chain breakage and blockage of a scraper is disclosed, and the present embodiment is different from the previous embodiment in that a tail pulley 1 is provided with a tail pulley shell 15 and a tail pulley fixing bracket 16; the tailwheel shell 15 follows tailwheel 1 is rotatory, tailwheel fixed bolster 16 sets up 1 one side of tailwheel, speed sensor 2 is fixed on the tailwheel fixed bolster 16, speed sensor 2 detects the rotation of tailwheel shell 15, does not directly survey the rotation of 1 axle of tailwheel, and this embodiment also can be accurate through the rotation that detects tailwheel shell 15 detects the rotational speed of tailwheel 1.

The tail wheel 1 further comprises 6 nuts 17, and the 6 nuts 17 are uniformly arranged on the tail wheel shell 15. In order to make the detection of the speed measuring device 2 more accurate, 6 nuts 17 are arranged on the tail wheel shell 15, and the speed measuring device 2 detects the rotating speed of the nuts 17 on the tail wheel fixing support 16, so that the rotating speed of the tail wheel 1 is determined.

As another embodiment of the present invention, as shown in fig. 4, a system 100 for protecting chain breakage and blockage of a scraper is disclosed, which is different from the previous embodiment in that a tail pulley 1 is provided with a tail pulley shell 15 and a speed measuring tooth 18; the tail-wheel shell 15 and the speed measuring teeth 18 follow the tail-wheel 1 is rotatory, the speed measuring device 2 is fixed on the tail-wheel fixed bolster 16, the speed measuring device 2 detects the rotation of the speed measuring teeth 18 on the tail-wheel shell 15, does not directly detect the rotation of the shaft of the tail-wheel 1, and this embodiment can also be accurate through the rotation of the speed measuring teeth 18 on the tail-wheel shell 15 to detect the rotating speed of the tail-wheel 1.

Wherein, the number of the speed measuring teeth 18 is more than or equal to 6, and the speed measuring teeth are uniformly arranged on the tail wheel shell 15. In order to enable the speed measuring device 2 to detect more accurately, more than or equal to 6 speed measuring teeth 18 are arranged on the tail wheel shell 15, and the speed measuring device 2 detects the rotating speed of the speed measuring teeth 18 on the tail wheel fixing support 16, so that the rotating speed of the tail wheel 1 is determined.

The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. In the technical idea scope of the present invention, it can be right to the technical solution of the present invention perform multiple simple modifications, including each technical feature combined in any other suitable manner, these simple modifications and combinations should be regarded as the disclosed content of the present invention, and all belong to the protection scope of the present invention.

Claims

1. A scraper chain breakage and blockage early warning protection system is characterized by comprising a tail wheel (1), a speed measuring device (2) and an early warning protection device (3); the tail wheel (1) is used for assisting the chain motion of the scraper conveyor; the speed measuring device (2) is used for detecting the rotary motion of the tail wheel (1); the early warning protection device (3) is electrically connected with the speed measuring device (2) and is used for giving an alarm and controlling the scraper conveyor to stop running when the speed measuring device (2) detects that the rotation speed of the tail wheel (1) is reduced or stops rotating.

2. The scraper chain breakage and blockage early warning protection system as claimed in claim 1, wherein the tail wheel (1) comprises a bearing (11), a bearing positioning plate (12), a bolt (13) and a shaft end cover (14); the bearing (11) is used for supporting the tail wheel (1) and reducing the friction coefficient of the tail wheel (1) in the movement process; the bearing positioning plate (12) is used for fixing the bearing (11), the bolt (13) is used for fixing the bearing positioning plate (12), and the shaft end cover (14) is used for sealing the bearing (11).

3. The system for the pre-warning protection of chain breakage and blockage of the scraper conveyor as claimed in claim 2, wherein the speed measuring device (2) is arranged on the shaft end cover (14) and is used for detecting the rotation speed of the bearing (11).

4. The system for the pre-warning protection of chain breakage and blockage of the scraper conveyor as claimed in claim 2, wherein the bolts (13) are provided in a plurality and are uniformly distributed on the bearing positioning plate (12).

5. The scraper chain breakage and blockage pre-warning protection system as claimed in claim 1, wherein the tail wheel (1) comprises a tail wheel housing (15) and a tail wheel fixing bracket (16); the tail wheel shell (15) rotates along with the tail wheel (1), the tail wheel fixing support (16) is arranged on one side of the tail wheel (1), and the speed measuring device (2) is fixed on the tail wheel fixing support (16).

6. The system for pre-warning and protecting the chain breakage and the blockage of the scraper conveyor as claimed in claim 5, wherein the tail wheel (1) further comprises 6 nuts (17), and the 6 nuts (17) are uniformly arranged on the tail wheel shell (15).

7. The system for the pre-warning protection against chain breakage and jamming of a scraper conveyor as claimed in claim 1, characterized in that said speed measuring device (2) comprises a speed sensor (21), said speed sensor (21) being adapted to detect the rotation speed of said tail wheel (1).

8. The scraper chain breakage and blockage early warning protection system as claimed in claim 1, characterized in that the early warning protection device (3) comprises an intelligent tachometer (31) and an audible and visual alarm (32); the intelligent tachometer (31) is electrically connected with the speed measuring device (2) and is used for receiving the rotating speed of the tail wheel (1) detected by the speed measuring device (2) and sending a control signal and an alarm signal; the audible and visual alarm (32) is electrically connected with the intelligent tachometer (31) and used for giving an alarm.

9. The system for pre-warning and protecting chain breakage and blockage of the scraper conveyor as claimed in claim 8, wherein the intelligent tachometer (31) comprises a controller (311), the controller (311) is arranged in the intelligent tachometer (31), and the controller (311) sends out a control signal and an alarm signal according to the rotation speed of the tail wheel (1) detected by the speed measuring device (2).

10. The system for pre-warning and protecting chain breakage and blockage of the scraper conveyor as claimed in claim 9, wherein the controller (311) and the speed measuring device (2) use the same set of direct-current switching power supplies as power supplies.