A safety protection device for a belt conveyor tractioned by a steel wire rope

Abstract

The invention discloses a safety protection device for a belt conveyor pulled by a steel wire rope, comprising: a positioning plate, an upper edge of which is provided with a strip-shaped detection groove from top to bottom, so that both sides of the upper edge of the positioning plate protrude upward to form a left positioning platform and a right positioning platform, a steel wire rope detection rod, a middle section of which is movably connected with the left positioning platform and can rotate around its connection point, a left end of which extends into the lower side of the steel wire rope of the belt conveyor, and a right end of which is arranged close to the right positioning platform, and a travel switch, a trigger rope of which is connected with the right end of the steel wire rope detection rod, and is used for pressing the left end of the steel wire rope detection rod downward when the steel wire rope falls off, while the right end of the steel wire rope detection rod moves upward, and then the travel switch is actuated by the trigger rope, so that the belt conveyor stops running; the invention has sensitive and reliable action, effectively avoids the expansion of the accident of "belt falling off the groove, rope falling off and belt breaking", curbs the occurrence of chain accidents, improves the efficiency of accident repair, and greatly saves manpower and material resources.

Description

Technical Field

[0001] The invention belongs to the field of peripheral equipment of belt conveyors, and in particular relates to a safety protection device for belt conveyors pulled by steel wire ropes. Background Art

[0002] Belt conveyors, also known as rubber belt conveyors, are widely used in various industries such as home appliances, electronics, electrical appliances, machinery, tobacco, injection molding, post and telecommunications, printing, food, etc. for the assembly, testing, debugging, packaging and transportation of objects.

[0003] Line conveying can be selected according to process requirements: ordinary continuous operation, beat operation, variable speed operation and other control modes; the line body can be selected according to local conditions: straight line, curve, slope and other line forms. Conveying equipment includes: belt conveyor, also called belt conveyor or belt conveyor, etc., which is an indispensable economical logistics conveying equipment for rhythmic assembly lines. Belt conveyors can be divided into heavy-duty belt conveyors such as mining belt conveyors and light-duty belt conveyors such as those used in electronic plastics, food and light industry, chemical and pharmaceutical industries according to their conveying capacity.

[0004] Belt conveyors have strong conveying capacity, long conveying distance, simple structure, easy maintenance, and can easily implement programmed control and automatic operation. The continuous or intermittent movement of the conveyor belt is used to convey items under 100KG or powdery or granular items. It runs at high speed, smoothly, with low noise, and can be transported up and down slopes.

[0005] Since the wire rope traction belt conveyor of a certain mine was put into operation, there have always been certain problems in terms of safety protection. When water coal or large rocks leaked from the large coal bunker and caused the belt to derail, the protection device could not operate in time, causing the accident to expand. It took a long time and a lot of manpower and material resources to restore the operation of the belt conveyor, posing a great threat to safe production. Summary of the invention

[0006] The purpose of the present invention is to provide a safety protection device for a belt conveyor pulled by a steel wire rope, so as to solve the problem that the existing protection device cannot be activated in time, resulting in the expansion of accidents.

[0007] The present invention adopts the following technical solution: a safety protection device for a belt conveyor pulled by a steel wire rope, comprising:

[0008] The positioning plate is vertically arranged and fixed to the side of the belt conveyor by bolts. The plane where it is located is perpendicular to the belt conveyor belt transportation direction of the belt conveyor. The upper edge of the positioning plate is provided with a strip-shaped detection groove from top to bottom, so that the two sides of the upper edge of the positioning plate protrude upward to form a left positioning platform and a right positioning platform.

[0009] The wire rope detection rod has a middle section movably connected to the left positioning platform and can rotate around its connection point. Its left end extends into the lower side of the wire rope of the belt conveyor, and its right end is set close to the right positioning platform.

[0010] The travel switch is fixed on the lower half of the positioning plate. Its trigger rope is connected to the right end of the wire rope detection rod. When the wire rope falls off, the left end of the wire rope detection rod is pressed down, and the right end of the wire rope detection rod moves upward, thereby actuating the travel switch through the trigger rope, causing the belt conveyor to stop running.

[0011] The belt detection mechanism is movably connected to the right positioning platform and can rotate around its connection point. It is located on the lower side of the wire rope detection rod and is used to stop the belt conveyor through the trigger rope when the belt deviates and touches the belt detection mechanism.

[0012] Furthermore, it also includes:

[0013] The elastic member has an upper end connected to the wire rope detection rod and a lower end fixed to the positioning plate, and is used to pull the wire rope detection rod to reset so that the wire rope detection rod remains horizontal.

[0014] Furthermore, the belt detection mechanism is composed of a belt rod, a connecting rod, and a shift rod which are fixedly connected in sequence. The belt rod is tilted and its axis is parallel to the plane where the positioning plate is located. The connecting rod is horizontally arranged and its axis is parallel to the plane where the positioning plate is located. The shift rod is horizontally arranged and its axis is perpendicular to the plane where the positioning plate is located. The upper end of the belt rod is close to the belt of the belt conveyor, and its lower end is fixedly connected to the right end of the connecting rod. The right end of the connecting rod is movably connected to the right positioning platform, the left end of the connecting rod is fixedly connected to the rear end of the shift rod, and the front end of the shift rod extends into the lower side of the right end of the wire rope detection rod, so as to pull the belt detection mechanism to reset when the elastic member pulls the wire rope detection rod to reset.

[0015] Furthermore, the belt detection mechanism and the wire rope detection rod are respectively arranged on both sides of the positioning plate.

[0016] The beneficial effects of the present invention are as follows: the present invention is sensitive and reliable in action, effectively avoiding the expansion of accidents such as "belt slipping out of the groove, rope dropping and belt breaking", curbing the occurrence of chain accidents, improving the efficiency of accident repair, greatly saving manpower and material resources, and gaining precious time for raw coal safety and production. The present invention has the advantages of simple structure, low cost, high strength, easy processing, easy maintenance, small size, light weight, easy installation, sensitive and reliable in action, and has three protection functions of "slipping out of the groove, rope dropping and belt breaking". BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2It is a structural schematic diagram of the present invention;

[0019] Figure 3 It is a position relationship diagram of the belt detection mechanism and the wire rope detection rod of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the belt detection mechanism of the present invention.

[0021] Among them: 1. Positioning plate; 2. Wire rope detection rod; 3. Travel switch; 4. Belt detection mechanism; 5. Detection slot; 6. Left positioning platform; 7. Right positioning platform; 8. Trigger rope; 9. Elastic part; 10. Belt rod; 11. Connecting rod; 12. Gear lever; 13. Wire rope; 14. Belt. DETAILED DESCRIPTION

[0022] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] The invention discloses a safety protection device for a belt conveyor tractioned by a steel wire rope, such as Figure 1 and Figure 2 As shown, it includes a positioning plate 1, a wire rope detection rod 2, a travel switch 3, and a belt detection mechanism 4.

[0024] The positioning plate 1 is arranged vertically and is fixed to the side of the belt conveyor by bolts. The plane where the positioning plate 1 is located is perpendicular to the transportation direction of the belt 14 of the belt conveyor. A strip-shaped detection groove 5 is opened from top to bottom on the upper edge of the positioning plate 1, so that the two sides of the upper edge of the positioning plate 1 protrude upward to form a left positioning platform 6 and a right positioning platform 7.

[0025] The middle section of the wire rope detection rod 2 is movably connected to the left positioning platform 6 and can rotate around its connection point. The left end of the wire rope detection rod 2 extends into the lower side of the wire rope 13 of the belt conveyor, and the right end of the wire rope detection rod 2 is arranged close to the right positioning platform 7.

[0026] The travel switch 3 is fixed on the lower half of the positioning plate 1. The travel switch 3 is electrically connected to the belt conveyor. The travel switch 3 is used to control the opening of the belt conveyor. The trigger rope 8 of the travel switch 3 is connected to the right end of the wire rope detection rod 2. The travel switch 3 is used to press the left end of the wire rope detection rod 2 downward and the right end of the wire rope detection rod 2 upward when the wire rope 13 falls off, thereby actuating the travel switch 3 through the trigger rope 8 to stop the belt conveyor.

[0027] like Figure 3 and Figure 4As shown, the belt detection mechanism 4 is movably connected to the right positioning platform 7 and can rotate around its connection point. The belt detection mechanism 4 is located on the lower side of the wire rope detection rod 2. The belt detection mechanism 4 is used to move the belt detection mechanism 4 to the right when the belt 14 deviates and touches the belt detection mechanism 4, and then the belt detection mechanism 4 pulls the right end of the wire rope detection rod 2 to move upward, and the travel switch 3 is activated by the trigger rope 8, so that the belt conveyor stops running.

[0028] The present invention further includes an elastic member 9, the upper end of which is connected to the wire rope detection rod 2, and the lower end of which is fixed to the positioning plate 1, and the elastic member 9 is used to pull the wire rope detection rod 2 to reset so that the wire rope detection rod 2 remains horizontal. The connection point between the elastic member 9 and the wire rope detection rod 2 is arranged close to the right positioning platform 7 so as to pull the wire rope detection rod 2 to reset.

[0029] The belt detection mechanism 4 is composed of a belt rod 10, a connecting rod 11, and a shift rod 12 which are fixedly connected in sequence. The belt rod 10 is tilted and its axis is parallel to the plane where the positioning plate 1 is located. The connecting rod 11 is horizontally arranged and its axis is parallel to the plane where the positioning plate 1 is located. The shift rod 12 is horizontally arranged and its axis is perpendicular to the plane where the positioning plate 1 is located. The upper end of the belt rod 10 is arranged close to the belt 14 of the belt conveyor, and its lower end is fixedly connected to the right end of the connecting rod 11. The right end of the connecting rod 11 is movably connected to the right positioning platform 7, so that the belt detection mechanism 4 can rotate at its connection point. The left end of the connecting rod 11 is fixedly connected to the rear end of the shift rod 12, and the front end of the shift rod 12 extends into the lower side of the right end of the wire rope detection rod 2. The shift rod 12 is used when the elastic member 9 pulls the wire rope detection rod 2 to reset downward. When the wire rope detection rod 2 moves downward, the belt detection mechanism 4 is also pulled to reset by the shift rod 12.

[0030] The belt detection mechanism 4 and the wire rope detection rod 2 are respectively arranged on both sides of the positioning plate 1. Arranging the belt detection mechanism 4 and the wire rope detection rod 2 on both sides of the positioning plate 1 can make the present invention more stable and firm, and also facilitate the shift lever 12 to pull the belt detection mechanism 4 to reset.

[0031] The method of use of the present invention is as follows:

[0032] When the belt 14 breaks or the traction rope falls off the wheel, that is, the rope falls off, the belt 14 or the traction rope directly falls on the left end of the wire rope detection rod 2, causing the left end of the wire rope detection rod 2 to move downward, and the right end of the wire rope detection rod 2 to move upward. When the right end of the wire rope detection rod 2 moves upward, it pulls the trigger rope 8, and then pulls the travel switch 3, so that the travel switch 3 is actuated, and the belt conveyor stops running.

[0033] When the belt 14 deviates, that is, comes out of the groove, the belt 14 moves outward, that is, moves to the right, pushes the belt rod 10, and the upper end of the belt rod 10 moves to the right, driving the left end of the connecting rod 11 to move upward, thereby driving the shift rod 12 to move upward, thereby pushing the right end of the wire rope detection rod 2 to move upward, and when the right end of the wire rope detection rod 2 moves upward, it pulls the trigger rope 8, thereby pulling the travel switch 3, causing the travel switch 3 to operate, and the belt conveyor stops.

[0034] Example 1

[0035] Since the wire rope 13 traction belt conveyor of a certain mine was put into operation, there have always been certain problems in terms of safety protection. When the belt 14 is out of the groove due to water coal or large stones in the large coal bunker, the protection device cannot be activated in time, causing the accident to expand. It takes a long time and a lot of manpower and material resources to restore the operation of the belt 14 machine, which poses a great threat to production safety. Before the installation of the present invention, it usually takes more than 4 hours to deal with the accident of "belt 14 out of the groove, rope falling and belt breaking". The longest time to deal with a serious "belt falling out of the groove, rope falling and belt breaking" accident is as long as 34 hours. After the installation of the present invention, it usually does not take more than 2 hours to deal with the accident of "belt 14 out of the groove, rope falling and belt breaking".

[0036] After installing the present invention, each time the belt 14 "slipping out of the groove, rope dropping and belt breaking" accident is handled, at least 2 hours are saved, and 1,500 tons of raw coal can be transported more. Calculated at a price of 290 yuan per ton of coal, each time the belt is handled, the loss can be reduced by 1,500×290=435,000 yuan compared with the past; calculated based on 10 "slipping out of the groove, rope dropping and belt breaking" accidents per year, the loss can be reduced by 43.5×10=4.35 million yuan per year. This does not include the large investment in manpower and materials.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety protection device for a belt conveyor tractioned by a steel wire rope, characterized in that: include: The positioning plate (1) is vertically arranged and fixed to the side of the belt conveyor by bolts. The plane on which the positioning plate is located is perpendicular to the conveying direction of the belt (14) of the belt conveyor. The upper edge of the positioning plate (1) is provided with a strip-shaped detection groove (5) from top to bottom, so that the two sides of the upper edge of the positioning plate (1) protrude upward to form a left positioning platform (6) and a right positioning platform (7). A wire rope detection rod (2), the middle section of which is movably connected to the left positioning platform (6) and can rotate around its connection point, the left end of which extends into the lower side of the wire rope (13) of the belt conveyor, and the right end of which is arranged close to the right positioning platform (7). The travel switch (3) is fixed on the lower half of the positioning plate (1), and its trigger rope (8) is connected to the right end of the wire rope detection rod (2). When the wire rope (13) falls off, the left end of the wire rope detection rod (2) is pressed downward, and the right end of the wire rope detection rod (2) moves upward, thereby actuating the travel switch (3) through the trigger rope (8), so that the belt conveyor stops running. A belt detection mechanism (4) is movably connected to the right positioning platform (7) and can rotate around its connection point, and is located on the lower side of the wire rope detection rod (2). When the belt (14) deviates and touches the belt detection mechanism (4), the belt detection mechanism (4) causes the belt conveyor to stop running through the trigger rope (8); The belt detection mechanism (4) is composed of a belt rod (10), a connecting rod (11), and a shift rod (12) which are fixedly connected in sequence. The belt rod (10) is arranged obliquely, and its axis is parallel to the plane where the positioning plate (1) is located. The connecting rod (11) is arranged horizontally, and its axis is parallel to the plane where the positioning plate (1) is located. The shift rod (12) is arranged horizontally, and its axis is perpendicular to the plane where the positioning plate (1) is located. The upper end of the belt rod (10) is arranged close to the belt (14) of the belt conveyor, and its lower end is fixedly connected to the right end of the connecting rod (11). The right end of the connecting rod (11) is movably connected to the right positioning platform (7). The left end of the connecting rod (11) is fixedly connected to the rear end of the shift rod (12). The front end of the shift rod (12) extends into the lower side of the right end of the wire rope detection rod (2), so as to pull the belt detection mechanism (4) to reset when the elastic member (9) pulls the wire rope detection rod (2) to reset.

2. A safety protection device for a belt conveyor tractioned by a steel wire rope according to claim 1, characterized in that: Also includes: An elastic member (9) has an upper end connected to the steel wire rope detection rod (2) and a lower end fixed to the positioning plate (1) and is used to pull the steel wire rope detection rod (2) to reset so that the steel wire rope detection rod (2) remains horizontal.

3. A safety protection device for a belt conveyor tractioned by a steel wire rope according to claim 1 or 2, characterized in that: The belt detection mechanism (4) and the wire rope detection rod (2) are respectively arranged on both sides of the positioning plate (1).

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