CN112919052A

CN112919052A - Coal conveying belt tearing protection device

Info

Publication number: CN112919052A
Application number: CN202110351630.3A
Authority: CN
Inventors: 张�杰; 唐玮骏; 林义杰; 陈逸; 江辉; 叶思; 袁卫东; 张豪庆
Original assignee: Huaneng Shanghai Shidongkou Second Power Plant
Current assignee: Huaneng Shanghai Shidongkou Second Power Plant
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-06-08
Anticipated expiration: 2041-03-31
Also published as: CN112919052B

Abstract

The invention discloses a coal conveying belt tearing protection device which comprises a fixing component, a fixing component and a protective component, wherein the fixing component comprises a sleeve, and the sleeve comprises a first end and a second end; the sensing assembly comprises a microswitch arranged in the first end and a moving piece arranged in the sleeve; one end of the moving piece is contacted with the microswitch, the other end of the moving piece extends out of the second end, and one end of the moving piece extending out of the second end is connected with the steel cable; a sliding groove is formed between the first end and the second end, a first limiting boss is arranged at the second end, the moving piece comprises a first sliding block arranged in the sliding groove, a first elastic piece is arranged between the first sliding block and the first limiting boss, and the length of the sliding groove is greater than that of the first sliding block; through set up the second slider in first slider, when the belt fracture appears and sink, the cable wire at first pulls the second slider and removes in the accommodation hole, and the spacing dish and the spacing collar contact of second slider and drive first slider and remove to make conical member extrusion micro-gap switch shut down.

Description

Coal conveying belt tearing protection device

Technical Field

The invention relates to the field of belt tearing prevention, in particular to a coal conveying belt tearing protection device.

Background

The existing tearing protection switch used for the coal conveying belt is usually a longitudinal tearing protection switch, when the belt is torn, the junction is damaged or a sharp object protrudes downwards out of the belt, an alarm can be provided for operators, and an interlocking signal is cut off to stop the belt conveyor to run, so that the damaged area of the belt is prevented from being enlarged. The tearing protection switch is installed on the side face of the belt conveyor and is connected by the aviation steel wire rope of the ethylene outer sleeve, so that direct loss caused by belt tearing can be effectively reduced, and certain limitation is realized. The belt conveyor has great vibrations in the middle of the operation process, and the iron ball is very easy to be disconnected with the touch switch to cause error protection. The belt is a trapezoid-like curved surface under the action of tensile stress, and the steel wire rope cannot be completely attached to the belt, so that the belt cannot be protected by touch when being torn. When the belt runs, the lower edge wire easily hits the steel wire rope to cause misoperation, and the operation is influenced.

Disclosure of Invention

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments, and in this section as well as in the abstract and the title of the invention of this application some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions are not intended to limit the scope of the invention.

The present invention has been made keeping in mind the above problems occurring in the prior art and/or the problems occurring in the prior art.

Therefore, the invention aims to solve the technical problem that when the belt runs, the lower edge wire is easy to hit the steel wire rope to cause misoperation, and the operation is influenced.

In order to solve the technical problems, the invention provides the following technical scheme: a coal conveying belt tearing protection device comprises a fixing component and a fixing component, wherein the fixing component comprises a sleeve, and the sleeve comprises a first end and a second end;

a sensing assembly including a microswitch disposed within the first end, a moving member disposed within the sleeve; one end of the moving piece is in contact with the micro switch, the other end of the moving piece extends out of the second end, and one end of the moving piece extending out of the second end is connected with the steel cable.

As a preferable aspect of the tearing protection device for a coal belt of the present invention, wherein: the movable piece comprises a first sliding block arranged in the sliding groove, a first elastic piece is arranged between the first sliding block and the first limiting boss, and the length of the sliding groove is larger than that of the first sliding block.

As a preferable aspect of the tearing protection device for a coal belt of the present invention, wherein: the end part, close to the first end, of the first sliding block is connected with a conical piece, the conical surface of the conical piece is in contact with a shifting lever of the micro switch, and the end, close to the first end, of the conical piece, with the larger cross section is the end of the conical piece.

As a preferable aspect of the tearing protection device for a coal belt of the present invention, wherein: the first sliding block is provided with an accommodating hole, a second sliding block is arranged in the accommodating hole, and one end of the second sliding block extends out of the accommodating hole and the first limiting boss;

and a second elastic part is arranged between the second sliding block and the first limiting boss and is positioned between the second sliding block and the first sliding block.

As a preferable aspect of the tearing protection device for a coal belt of the present invention, wherein: the one end that the second slider is located the accommodation hole is provided with spacing dish, the opening part of accommodation hole is provided with the spacing collar, the diameter of spacing dish is greater than the diameter of spacing collar.

As a preferable aspect of the tearing protection device for a coal belt of the present invention, wherein: the first sliding block is provided with a limiting groove at one end close to the conical part, the sleeve is provided with a clamping groove which is arranged along the radial direction, a bolt is arranged in the clamping groove, one end of the bolt can be embedded into the clamping groove, and a third elastic part is arranged between the other end of the bolt and the bottom of the clamping groove.

As a preferable aspect of the tearing protection device for a coal belt of the present invention, wherein: the first end overcoat is equipped with the circle that resets, it is provided with the reset block along the axial to reset the circle, first end surface is provided with along the axial extension's sliding tray, the embedding of reset block in the sliding tray.

As a preferable aspect of the tearing protection device for a coal belt of the present invention, wherein: a reset hole axially penetrating along the first end is formed in the plug pin, and one end of the reset block is embedded into the reset hole; one side that the reset block kept away from the sleeve is provided with the inclined plane, one side that the inclined plane is close to the second end is to sleeve axle center direction slope.

As a preferable aspect of the tearing protection device for a coal belt of the present invention, wherein: the sleeve is provided with a reset boss, and a fourth elastic piece is arranged between the reset boss and the reset ring.

As a preferable aspect of the tearing protection device for a coal belt of the present invention, wherein: the second sliding block is connected with a steel cable.

The invention has the beneficial effects that: the second sliding block is arranged in the first sliding block, when the belt is broken and sinks, the steel cable firstly pulls the second sliding block to move in the accommodating hole until a limiting disc of the second sliding block is in contact with the limiting ring and drives the first sliding block to move, so that the conical part extrudes the microswitch to stop; if the belt only slightly shakes, the second sliding block can be pulled by the steel rope to move in the accommodating hole, but the vibration amplitude is not enough to enable the limiting disc and the limiting ring, namely the first sliding block to be motionless, so that the sensing assembly avoids the phenomenon that the belt is stopped due to slight sinking of the belt due to sensing errors.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

FIG. 1 is a schematic structural view illustrating an installation of a tearing protection device for a coal belt according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a fixing component and a sensing component in the coal belt tearing protection device according to an embodiment of the invention;

FIG. 3 is a schematic structural diagram of a fixing component and a sensing component in the coal conveyor belt tearing protection device according to an embodiment of the invention when the belt is torn;

fig. 4 is a schematic structural view of an operating principle of the coal conveyor belt tearing protection device according to an embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Next, the present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially according to the general scale for convenience of illustration when describing the embodiments of the present invention, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Examples

Referring to fig. 1 to 4, the embodiment provides a coal conveyor belt tearing protection device, which includes a fixing component 100 and a sensing component 200, wherein the fixing component 100 is fixedly connected to two sides of a belt mounting rack, the sensing component 200 is located inside the fixing component 100, the sensing component 200 is used for sensing whether a belt is broken, and the fixing component 100 plays a role in fixing.

Specifically, the fixing assembly 100 includes a sleeve 101, that is, the sleeve 101 is hollow, and the sleeve 101 includes a first end 101a and a second end 101 b; wherein the first end 101a is the end away from the belt and the second end 101b is the end near the belt; sensing assembly 200, including setting up micro-gap switch 201 in first end 101a, micro-gap switch 201 is prior art, is provided with the driving lever on it and is used for controlling the switch of belt, and micro-gap switch 201 is connected with the brake switch of belt promptly, and concrete connected mode is no longer repeated for prior art.

Further, the sensing assembly 200 further includes a moving member 300 disposed in the sleeve 101; the moving member 300 can move axially in the sleeve 101, one end of the moving member 300 is in contact with the micro switch 201, and the other end of the moving member 300 extends out of the second end 101b, and the state of the micro switch 201 is controlled by the position of the moving member 300 in the sleeve 101. Wherein the end of the moving member 300 extending from the second end 101b is connected with a steel cable 202; when the belt is torn, the belt portion is depressed downward to press the steel cable 202 downward, and one end of the steel cable 202 pulls the moving member 300 to move the moving member 300 toward the second end 101b, so that the state of the microswitch 201 is changed to brake the belt.

Further, a sliding groove 101c is arranged between the first end 101a and the second end 101b, the second end 101b is provided with a first limiting boss 101d, and the inner diameter of the first limiting boss 101d is smaller than that of the sliding groove 101 c. The moving member 300 comprises a first sliding block 301 arranged in the sliding groove 101c, the first sliding block 301 is connected with the sliding groove 101c in a sliding manner, and the diameter of the first sliding block 301 is larger than the inner diameter of the first limiting boss 101 d; a first elastic element 302 is arranged between the first sliding block 301 and the first limiting boss 101d, the first elastic element 302 is a pressure spring, the elastic force exerted by the first elastic element 302 on the first sliding block 301 is opposite to the tensile force exerted by the steel cable 202 on the moving element 300, and the length of the sliding groove 101c is greater than that of the first sliding block 301.

Furthermore, a tapered member 303 is connected to an end of the first slider 301 close to the first end 101a, a tapered surface of the tapered member 303 contacts with a lever of the micro switch 201, and an end of the tapered member 303 having a larger cross section is an end close to the first end 101 a. That is, when the first slider 301 is pulled by the cable 202, the cone 303 moves in the sleeve 101, and its cone presses the lever of the micro switch 201 to switch the state of the micro switch 201.

Preferably, the first slider 301 is provided with a receiving hole 301a, the receiving hole 301a is internally provided with a second slider 304, the second slider 304 can move in the receiving hole 301a along the axial direction, and one end of the second slider 304 extends out of the receiving hole 301a and the first limit boss 101 d; one end of the second sliding block 304, which extends out of the accommodating hole 301a and the first limiting boss 101d, is connected with a steel cable; a second elastic element 305 is arranged between the second slider 304 and the first limiting boss 101d, the second elastic element 305 is located between the second slider 304 and the first slider 301, the second elastic element 305 is a pressure spring, the pressure of the second elastic element 305 enables the second slider 304 to be close to the first end 101a in the accommodating hole 301a, the first slider 301 and the second slider 304 are connected in a sliding mode, and no friction force exists.

Further, one end of the second slider 304 located in the receiving hole 301a is provided with a limiting disc 304a, and the opening of the receiving hole 301a is provided with a limiting ring 301b, so that the limiting disc 304a of the second slider 304 can only move in the receiving hole 301a, and the maximum movable range of the limiting disc 304a is also located in the receiving hole 301a, wherein one end of the second elastic element 305 abuts against the limiting disc 304a, and the diameter of the limiting disc 304a is larger than that of the limiting ring 301 b.

Therefore, when the belt breaks and sinks, the wire rope 202 first pulls the second sliding block 304 to move in the accommodating hole 301a until the limiting disk 304a of the second sliding block 304 contacts with the limiting ring 301b and drives the first sliding block 301 to move, so that the conical member 303 presses the micro switch 201.

It should be noted that the steel cord 202 is a flexible but not elastically deformable steel cord, and may be replaced with a steel cord or other rope.

It should be noted that the first slider 301 and the second slider 304 are provided for the purpose of preventing the belt from being damaged, if the belt is slightly vibrated, and this vibration can only cause the wire rope 202 to pull the second slider 304 to move in the accommodating hole 301a, but the vibration is not large enough to make the limiting disk 304a and the limiting ring 301b, i.e. the first slider 301 is stationary, therefore, in order to avoid sensing errors, the sensor assembly 200 may cause a shutdown phenomenon due to a slight belt sag, it is necessary to design the fitting relationship between the first slider 301 and the second slider 304 according to the magnitude of the normal shock, so that the first sliding block 301 does not drive the second sliding block 304 to move only in case of vibration, and the sinking degree is larger only when the belt is actually torn and sunk, the pressure on the steel cable is too large, and the steel cable pulls the second sliding block 304 too much, so that the belt brake can be stopped.

Preferably, when the belt needs to be restarted, the sensor assembly 200 needs to be reset; wherein, the one end that first slider 301 is close to conical member 303 is provided with spacing groove 301c, be provided with the draw-in groove 101e along radial setting on the sleeve 101, be provided with bolt 102 in the draw-in groove 101e, the one end of bolt 102 can be embedded into draw-in groove 101e, under the normal operating condition, bolt 102 is located draw-in groove 101e, can not be embedded into spacing groove 301c, in case first slider 301 moves to second end 101b, spacing groove 301c moves to draw-in groove 101e below, and the belt is shut down, then bolt 102 is embedded into spacing groove 301c under the effect of third elastic component 103 and prevents that first slider 301 kick-backs, after waiting to overhaul to accomplish, bolt 102 breaks away from spacing groove 301c and makes first slider 301 reset. A third elastic element 103 is arranged between the other end of the plug 102 and the bottom of the slot 101e, and the third elastic element 103 is a pressure spring.

Wherein, the structure that resets does: a reset ring 104 is sleeved outside the first end 101a, the reset ring 104 can move on the first end 101a along the axial direction, a reset block 104a is arranged on the reset ring 104 along the axial direction, a sliding groove 101f extending along the axial direction is arranged on the outer surface of the first end 101a, the reset block 104a is embedded into the sliding groove 101f, the reset block 104a moves in the sliding groove 101f, a reset hole 102a penetrating through the first end 101a along the axial direction is arranged on the bolt 102, and one end of the reset block 104a is embedded into the reset hole 102 a; the reset block 104a is provided with an inclined surface 104b on the side away from the sleeve 101, and the side of the inclined surface 104b close to the second end 101b inclines towards the axial center of the sleeve 101. Therefore, when the reset ring 104 moves towards the second end 101b, the inclined surface 104b will lift the pin 102 to disengage the pin 102 from the retaining groove 301c, so that the first slider 301 can be reset by springing back.

Preferably, the sleeve 101 is provided with a reset boss 101g, a fourth elastic member 105 is arranged between the reset boss 101g and the reset ring 104, and the fourth elastic member 105 is a pressure spring, so that the reset ring 104 is reset after the first slider 301 rebounds and resets.

The implementation mode and principle of the embodiment are as follows: fixedly mounting the fixing component 100 and the sensing component 200 on a belt mounting rack, wherein the steel cable 202 is positioned below the belt, and the reserved distance between the steel cable 202 and the belt is determined by actual conditions, so that the steel cable can be pressed downwards when the belt is torn; when the belt only vibrates normally, although the belt also has a certain pressure on the steel cable 202, the pressure is not enough to move the limiting disc 304a to be in contact with the limiting ring 301b, and the limiting disc 304a can only move in the accommodating hole 301 a; when the belt is torn, the belt drops or sundries penetrate through the belt to enable the steel cable 202 to be drawn downwards, the steel cable 202 pulls the second sliding block 304, the limiting disc 304a is in contact with the limiting ring 301b and drives the first sliding block 301 to move, so that the conical piece 303 extrudes the microswitch 201 to enable the belt to stop, and meanwhile, the bolt 102 is embedded into the limiting groove 301c under the action of the third elastic piece 103 to prevent the first sliding block 301 from rebounding; when the operation reset ring 104 moves towards the second end 101b after the maintenance is completed, the inclined surface 104b will lift the pin 102 to disengage the pin 102 from the limiting groove 301c, so that the first sliding block 301 can be rebounded and reset.

It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. The utility model provides a coal conveyor belt tears protection device which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

a fixation assembly (100) comprising a sleeve (101), the sleeve (101) comprising a first end (101a) and a second end (101 b);

a sensing assembly (200) comprising a microswitch (201) disposed within the first end (101a), a mover (300) disposed within the sleeve (101); one end of the moving member (300) is in contact with the microswitch (201), the other end of the moving member extends out of the second end (101b), and one end of the moving member (300) extending out of the second end (101b) is connected with a steel cable (202).

2. The coal conveyor belt tear protection device of claim 1, wherein: be provided with spout (101c) between first end (101a) and second end (101b), second end (101b) is provided with first spacing boss (101d), moving member (300) are including setting up first slider (301) in spout (101c), be provided with first elastic component (302) between first slider (301) and first spacing boss (101d), the length of spout (101c) is greater than the length of first slider (301).

3. The coal conveyor belt tear protection device of claim 2, wherein: the end part, close to the first end (101a), of the first sliding block (301) is connected with a conical piece (303), the conical surface of the conical piece (303) is in contact with a shifting rod of the microswitch (201), and the end, with the larger cross section, of the conical piece (303) is close to the first end (101 a).

4. The coal conveyor belt tear protection device of claim 3, wherein: the first sliding block (301) is provided with a containing hole (301a), a second sliding block (304) is arranged in the containing hole (301a), and one end of the second sliding block (304) extends out of the containing hole (301a) and the first limiting boss (101 d);

a second elastic piece (305) is arranged between the second sliding block (304) and the first limiting boss (101d), and the second elastic piece (305) is located between the second sliding block (304) and the first sliding block (301).

5. The coal conveyor belt tear protection device of claim 4, wherein: one end of the second sliding block (304) located in the accommodating hole (301a) is provided with a limiting disc (304a), the opening of the accommodating hole (301a) is provided with a limiting ring (301b), and the diameter of the limiting disc (304a) is larger than that of the limiting ring (301 b).

6. The coal conveyor belt tearing protection device as claimed in any one of claims 3 to 5, wherein: one end, close to the conical piece (303), of the first sliding block (301) is provided with a limiting groove (301c), a clamping groove (101e) which is arranged along the radial direction is formed in the sleeve (101), a bolt (102) is arranged in the clamping groove (101e), one end of the bolt (102) can be embedded into the limiting groove (301c), and a third elastic piece (103) is arranged between the other end of the bolt (102) and the bottom of the clamping groove (101 e).

7. The coal conveyor belt tear protection device of claim 6, wherein: first end (101a) overcoat is equipped with reset ring (104), reset ring (104) are provided with reset block (104a) along the axial, first end (101a) surface is provided with along the sliding tray (101f) of axial extension, reset block (104a) embedding in sliding tray (101 f).

8. The coal conveyor belt tear protection device of claim 7, wherein: a reset hole (102a) axially penetrating along the first end (101a) is formed in the bolt (102), and one end of the reset block (104a) is embedded into the reset hole (102 a); an inclined surface (104b) is arranged on one side, away from the sleeve (101), of the reset block (104a), and one side, close to the second end (101b), of the inclined surface (104b) inclines towards the axis direction of the sleeve (101).

9. The coal conveyor belt tear protection device of claim 8, wherein: be provided with on sleeve (101) and reset boss (101g), reset boss (101g) and reset and be provided with fourth elastic component (105) between circle (104).

10. The coal conveyor belt tear protection device of claim 9, wherein: the second sliding block (304) is connected with the steel cable (202).