Zipper type automatic unlocking and locking device for belt conveyor

Abstract

The invention relates to a zipper type automatic unlocking and locking device for a belt conveyor, and belongs to the technical field of belt conveyors. Comprising a locking mechanism, an unlocking mechanism, an upper side conveying belt and a lower side conveying belt. The locking mechanism and the unlocking mechanism are correspondingly arranged front and back; the upper side conveying belt and the lower side conveying belt are correspondingly arranged up and down; the locking mechanism comprises locking frames on the left side and the right side, an upper row of locking wheel assemblies and a lower row of locking wheel assemblies are rotationally arranged in each locking frame, and the edges of the two sides of the upper conveying belt and the edges of the two sides of the lower conveying belt are located between the upper row of locking wheel assemblies and the lower row of locking wheel assemblies on the same side respectively. The unlocking mechanism comprises unlocking frames on the left side and the right side, a guide head is arranged at the front end of each unlocking frame, an upper row of unlocking rollers and a lower row of unlocking rollers are rotationally arranged on each unlocking frame, and the unlocking frames on the left side and the right side are located between the edges of the two sides of the upper conveying belt and the edges of the two sides of the lower conveying belt respectively. The problem that an existing belt conveyor cannot adapt to the complex working condition of bulk material conveying is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of belt conveyors, and in particular relates to a zipper-type automatic opening and closing locking device for a belt conveyor. Background Art

[0002] With the development of belt conveyor technology, its application scope has gradually expanded to ports, power, mining and other enterprises. At the same time, there are more and more requirements for the use scope, site, and nature of conveyed materials of belt conveyors. The limitations of traditional belt conveyors are gradually experiencing equipment updates and technological development. While the space is limited, the lifting height is required to be higher, and environmental protection and other problems are gradually emerging. A belt conveyor that can fully adapt to complex working conditions such as bulk material terminals, open-pit mines, chemical material fields, and factories with limited space and high lifting heights is needed. Summary of the invention

[0003] The invention overcomes the shortcomings of the prior art and provides a zipper-type automatic opening and closing locking device for a belt conveyor, thereby solving the problem that the current belt conveyor cannot adapt to complex working conditions of bulk material conveying.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions.

[0005] A zipper-type automatic opening and closing locking device for a belt conveyor comprises a locking mechanism, an unlocking mechanism, an upper conveyor belt, and a lower conveyor belt; the locking mechanism and the unlocking mechanism are arranged in front and back correspondence; the upper conveyor belt and the lower conveyor belt are arranged in upper and lower correspondence; the locking mechanism comprises left and right locking frames, each of which has two upper and lower rows of locking wheel assemblies rotatably arranged inside, and the side edges of the upper conveyor belt and the lower conveyor belt are respectively located between the upper and lower rows of locking wheel assemblies on the same side; the unlocking mechanism comprises left and right unlocking frames, each of which has a guide head arranged at the front end, and each of which has two upper and lower rows of unlocking rollers rotatably arranged on the unlocking frame, and the left and right unlocking frames are respectively located between the side edges of the upper conveyor belt and the lower conveyor belt.

[0006] Furthermore, a row of equidistant permanent magnetic materials are fixedly provided at the edges of both sides of the lower end surface of the upper conveyor belt, and a row of equidistant permanent magnetic materials are fixedly provided at the edges of both sides of the upper end surface of the lower conveyor belt. When the permanent magnetic materials on both sides of the upper conveyor belt are magnetically attracted and bonded with the permanent magnetic materials on both sides of the lower conveyor belt, the upper conveyor belt and the lower conveyor belt in the magnetic attraction area form a closed space.

[0007] Furthermore, the locking frame is a U-shaped plate structure, and the U-shaped openings of the locking frames on the left and right sides are facing each other; a row of locking wheel assemblies equidistant from front to back are provided at the lower end of the top plate and the upper end of the bottom plate of the locking frame, and the locking wheel assemblies on the upper side are arranged one by one corresponding to the locking wheel assemblies on the lower side.

[0008] Furthermore, the locking wheel assembly includes a locking wheel, a movable seat, a fixed seat, a connecting rod, a fixed plate, a fixed rod, a guide rod, and a spring.

[0009] Furthermore, for the locking wheel assembly on the upper side, the movable seat is a U-shaped plate-like structure, and the U-shaped opening of the movable seat is vertically downward; a locking wheel is rotatably arranged inside the movable seat, and a vertical guide rod is fixedly arranged on the left and right sides of the upper end surface of the movable seat, respectively, and two guide holes are correspondingly arranged on the top plate of the locking frame, and the upper ends of the two guide rods are slidably inserted into the two guide holes of the top plate respectively; the top plate of the locking frame is also provided with a threaded hole that passes through from top to bottom between the two guide holes, and a vertical fixing rod is screwed inside the threaded hole, and a locking nut is screwed on the upper end of the fixing rod, and the locking nut is tightened to the top plate of the locking frame. The upper end surfaces are in contact with each other; a horizontal fixed plate is rotatably arranged at the lower end of the fixed rod, and the fixed rod is slidably sleeved on the outer sides of the two guide rods; a spring is sleeved on the outer side of each guide rod, the lower end of the spring is connected to the upper end surface of the movable seat, and the upper end of the spring is connected to the lower end surface of the fixed plate; two left-right symmetrical fixed seats are arranged on the front side of the movable seat, and the two fixed seats are respectively fixedly connected to the lower end surface of the top plate of the locking frame, and a connecting rod is rotatably arranged on each fixed seat, and a waist-shaped groove is arranged at the end of the connecting rod away from the fixed seat, and the two ends of the rotating shaft of the locking wheel are respectively inserted into the waist-shaped grooves of the two connecting rods.

[0010] Furthermore, for the locking wheel assembly on the lower side, the movable seat is a U-shaped plate-like structure, and the U-shaped opening of the movable seat is vertically upward; a locking wheel is rotatably arranged inside the movable seat, and a vertical guide rod is fixedly arranged on the left and right sides of the lower end surface of the movable seat, and two guide holes are correspondingly arranged on the bottom plate of the locking frame, and the lower ends of the two guide rods are slidably inserted into the two guide holes of the bottom plate respectively; the bottom plate of the locking frame is also provided with a threaded hole that passes through the two guide holes from top to bottom, and a vertical fixing rod is screwed inside the threaded hole, and a locking nut is screwed on the lower end of the fixing rod, and the locking nut is fixed to the bottom plate of the locking frame. The lower end surfaces are in contact; a horizontal fixed plate is rotatably arranged at the upper end of the fixed rod, and the fixed rod is slidably sleeved on the outer sides of the two guide rods; a spring is sleeved on the outer side of each guide rod, the upper end of the spring is connected to the lower end surface of the movable seat, and the lower end of the spring is connected to the upper end surface of the fixed plate; two left-right symmetrical fixed seats are arranged on the front side of the movable seat, and the two fixed seats are respectively fixedly connected to the upper end surfaces of the bottom plate of the locking frame, and a connecting rod is rotatably arranged on each fixed seat, and a waist-shaped groove is arranged at the end of the connecting rod away from the fixed seat, and the two ends of the rotating shaft of the locking wheel are respectively inserted into the waist-shaped grooves of the two connecting rods.

[0011] Furthermore, the left and right edges of the upper conveyor belt are in rolling contact with the locking wheels of the locking wheel assembly on the upper side of the same side, and the left and right edges of the lower conveyor belt are in rolling contact with the locking wheels of the locking wheel assembly on the lower side of the same side. At this time, the left and right edges of the upper conveyor belt and the lower conveyor belt are in a state of mutual magnetic attraction.

[0012] Furthermore, the unlocking frame is an isosceles triangle block structure, the sharp corner of the unlocking frame faces the front, and the upper and lower end faces of the unlocking frame are symmetrically arranged; the rear side of the upper end face of the unlocking frame is inclined upward, and the rear side of the lower end face of the unlocking frame is inclined downward.

[0013] Furthermore, the guide head is an isosceles triangle block structure, with the sharp corner of the guide head facing the front, the upper end face and the lower end face of the guide head being symmetrically arranged, the rear side of the upper end face of the guide head being inclined upward, and the rear side of the lower end face of the guide head being inclined downward, and the connection between the front side of the upper end face of the guide head and the front side of the lower end face of the guide head maintaining a smooth transition.

[0014] Furthermore, the sharp corner of the front side of the unlocking frame is fixedly connected to the rear end face of the guide head. A row of unlocking rollers are arranged on the upper end face of the unlocking frame in a rotational manner from front to back, and a row of unlocking rollers are arranged on the lower end face of the unlocking frame in a rotational manner from front to back; the arrangement direction of the row of unlocking rollers on the upper side maintains the same inclination as the upper end face of the guide head, and the arrangement direction of the row of unlocking rollers on the lower side maintains the same inclination as the lower end face of the guide head.

[0015] The beneficial effects of the present invention compared with the prior art are as follows: The invention provides a zipper-type automatic opening and closing locking device for a belt conveyor, which does not require power assistance, uses mechanical structural parts, has high interchangeability and low maintenance cost, and has a wide range of applications such as bulk material terminals, open-pit mines, chemical material yards, and factories with limited space and high lifting heights. The materials are fully enclosed, environmentally friendly and energy-saving for transportation, and are suitable for the transportation of bulk materials of different particle sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a side view of the locking mechanism; Figure 3 A front view of the locking mechanism; Figure 4 is a side view of the unlocking mechanism; Figure 5 It is a schematic diagram of the relative relationship between the upper conveyor belt and the permanent magnetic material; Among them, 1 is the upper conveyor belt, 2 is the lower conveyor belt, 3 is the locking frame, 4 is the locking wheel assembly, 5 is the unlocking frame, 6 is the guide head, 7 is the unlocking roller, 8 is the permanent magnetic material, 9 is the movable seat, 10 is the locking wheel, 11 is the guide rod, 12 is the fixed rod, 13 is the locking nut, 14 is the fixed plate, 15 is the spring, 16 is the fixed seat, and 17 is the connecting rod. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail in conjunction with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The technical solutions of the present invention are described in detail below in conjunction with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0018] like Figure 1 —5 shows that the present invention provides a zipper-type automatic opening and closing locking device for a belt conveyor, comprising a locking mechanism, an unlocking mechanism, an upper conveyor belt 1, and a lower conveyor belt 2; the locking mechanism and the unlocking mechanism are arranged in front and back correspondence; the upper conveyor belt 1 and the lower conveyor belt 2 are arranged in upper and lower correspondence; the locking mechanism comprises locking frames 3 on left and right sides, each locking frame 3 is internally provided with upper and lower rows of locking wheel assemblies 4 for rotation, and the side edges of the upper conveyor belt 1 and the lower conveyor belt 2 are respectively located between the upper and lower rows of locking wheel assemblies 4 on the same side; the unlocking mechanism comprises unlocking frames 5 on left and right sides, each unlocking frame 5 is provided with a guide head 6 at the front end, and each unlocking frame 5 is rotatably provided with upper and lower rows of unlocking rollers 7, and the unlocking frames 5 on left and right sides are respectively located between the side edges of the upper conveyor belt 1 and the lower conveyor belt 2.

[0019] A row of equidistant permanent magnetic materials 8 are fixedly arranged at the edges of both sides of the lower end surface of the upper conveyor belt 1, and a row of equidistant permanent magnetic materials 8 are fixedly arranged at the edges of both sides of the upper end surface of the lower conveyor belt 2. When the permanent magnetic materials 8 on both sides of the upper conveyor belt 1 are magnetically attracted and bonded with the permanent magnetic materials 8 on both sides of the lower conveyor belt 2, the upper conveyor belt 1 and the lower conveyor belt 2 in the magnetic attraction area form a closed space, which can ensure that the powdered bulk materials transported on the lower conveyor belt 2 will not leak and will not generate dust; the upper conveyor belt 1 and the lower conveyor belt 2 in the non-magnetic attraction area are separated from each other.

[0020] The permanent magnetic material 8 is a flame retardant composite polymer permanent magnetic material 8, which is made of permanent magnetic material 8 powder and polymers such as rubber or plastic. It has the characteristics of small magnetic loss, can be formed in one time to obtain a magnetic body with accurate size and complex shape, and can also adjust the magnetic strength at will, so it is widely used in various production equipment.

[0021] The locking frame 3 is a U-shaped plate structure, and the U-shaped openings of the locking frames 3 on the left and right sides face each other. A row of locking wheel assemblies 4 with equal distances from front to back are arranged at the lower end of the top plate and the upper end of the bottom plate of the locking frame 3, and the upper locking wheel assemblies 4 are arranged one by one with the lower locking wheel assemblies 4.

[0022] The locking frame 3 is made of polymer composite flame retardant material. The polymer material has the characteristics of light weight and strong plasticity, and is suitable for making products of various shapes and sizes. The composite material is composed of two or more materials, and has the characteristics of light weight and high strength. It can give full play to the advantages of each component material and is suitable for making structural parts of various environments and strengths. The structure is simple and practical. It is connected to the belt conveyor with bolts, or the adjustable legs are fixed on the ground for simple operation, and can easily realize the connection at different positions.

[0023] The locking wheel assembly 4 includes a locking wheel 10 , a movable seat 9 , a fixed seat 16 , a connecting rod 17 , a fixing plate 14 , a fixing rod 12 , a guide rod 11 , and a spring 15 .

[0024] For the locking wheel assembly 4 on the upper side, the movable seat 9 is a U-shaped plate-like structure, and the U-shaped opening of the movable seat 9 is vertically downward. A locking wheel 10 is rotatably arranged inside the movable seat 9, and the axis of the locking wheel 10 is horizontally arranged along the left and right directions. A vertical guide rod 11 is fixedly arranged on the left and right sides of the upper end surface of the movable seat 9, and two guide holes are correspondingly arranged on the top plate of the locking frame 3. The upper ends of the two guide rods 11 are respectively slidably inserted into the two guide holes of the top plate. The top plate of the locking frame 3 is also provided with a threaded hole that passes through from top to bottom between the two guide holes. A vertical fixed rod 12 is screwed inside the threaded hole, and a locking nut 13 is screwed on the upper end of the fixed rod 12. The locking nut 13 contacts the upper end surface of the top plate of the locking frame 3. A horizontal fixed plate 14 is rotatably arranged at the lower end of the fixed rod 12, and the fixed rod 12 is slidably sleeved on the outside of the two guide rods 11. A spring 15 is sleeved on the outside of each guide rod 11, and the lower end of the spring 15 is connected to the upper end surface of the movable seat 9, and the upper end of the spring 15 is connected to the lower end surface of the fixed plate 14. Two left-right symmetrical fixed seats 16 are arranged on the front side of the movable seat 9, and the two fixed seats 16 are respectively fixedly connected to the lower end surface of the top plate of the locking frame 3, and a connecting rod 17 is rotatably arranged on each fixed seat 16, and a waist-shaped groove is arranged at one end of the connecting rod 17 away from the fixed seat 16, and the two ends of the rotating shaft of the locking wheel 10 are respectively inserted into the waist-shaped grooves of the two connecting rods 17.

[0025] For the locking wheel assembly 4 on the lower side, the movable seat 9 is a U-shaped plate-like structure, and the U-shaped opening of the movable seat 9 is vertically upward. A locking wheel 10 is rotatably arranged inside the movable seat 9, and the axis of the locking wheel 10 is horizontally arranged along the left and right directions. A vertical guide rod 11 is fixedly arranged on the left and right sides of the lower end surface of the movable seat 9, and two guide holes are correspondingly arranged on the bottom plate of the locking frame 3. The lower ends of the two guide rods 11 are respectively slidably inserted into the two guide holes of the bottom plate. The bottom plate of the locking frame 3 is also provided with a threaded hole that passes through from top to bottom between the two guide holes. A vertical fixed rod 12 is screwed inside the threaded hole, and a locking nut 13 is screwed on the lower end of the fixed rod 12. The locking nut 13 contacts the lower end surface of the bottom plate of the locking frame 3. A horizontal fixed plate 14 is rotatably arranged at the upper end of the fixed rod 12, and the fixed rod 12 is slidably sleeved on the outer sides of the two guide rods 11. A spring 15 is sleeved on the outside of each guide rod 11, and the upper end of the spring 15 is connected to the lower end surface of the movable seat 9, and the lower end of the spring 15 is connected to the upper end surface of the fixed plate 14. Two left-right symmetrical fixed seats 16 are arranged on the front side of the movable seat 9, and the two fixed seats 16 are respectively fixedly connected to the upper end surface of the bottom plate of the locking frame 3, and a connecting rod 17 is rotatably arranged on each fixed seat 16, and a waist-shaped groove is arranged at one end of the connecting rod 17 away from the fixed seat 16, and the two ends of the rotating shaft of the locking wheel 10 are respectively inserted into the waist-shaped grooves of the two connecting rods 17.

[0026] The left and right edges of the upper conveyor belt 1 are in rolling contact with the locking wheels 10 of the locking wheel assembly 4 on the upper side of the same side, and the left and right edges of the lower conveyor belt 2 are in rolling contact with the locking wheels 10 of the locking wheel assembly 4 on the lower side of the same side. At this time, the left and right edges of the upper conveyor belt 1 and the lower conveyor belt 2 are in a mutually magnetically attracted state.

[0027] The outer side of the locking wheel 10 is provided with a flame-retardant polymer coating layer, so that the locking wheel 10 has a low friction coefficient, is wear-resistant, and is not easy to damage the conveyor belt. The locking wheel 10 uses an oil film bearing inside, which has excellent lubricity. During use, it can operate under harsh environmental conditions without oiling, is not easy to get stuck, and has good anti-magnetic properties. It has strong corrosion resistance and aging resistance, is resistant to corrosion by weak acids, weak alkalis and organic solvents, is non-toxic and pollution-free, and can withstand repeated impacts and vibrations. The locking wheel 10 coated with the flame-retardant polymer coating is light in weight, only one-third of the weight of a metal part, easy to install, low maintenance rate, low noise, stable operation, energy saving and environmental protection, can increase service life, has good dustproof and waterproof properties, can also be used in dusty environments, humid environments, etc., and is suitable for a variety of environmental requirements.

[0028] The unlocking frame 5 is an isosceles triangle block structure, with the sharp corner of the unlocking frame 5 facing the front side, and the upper end face and the lower end face of the unlocking frame 5 are symmetrically arranged. The rear side of the upper end face of the unlocking frame 5 is inclined upward, and the rear side of the lower end face of the unlocking frame 5 is inclined downward.

[0029] The guide head 6 is an isosceles triangle block structure, with the sharp corner of the guide head 6 facing the front, the upper end face and the lower end face of the guide head 6 are symmetrically arranged, the rear side of the upper end face of the guide head 6 is inclined upward, and the rear side of the lower end face of the guide head 6 is inclined downward, and the connection between the front side of the upper end face of the guide head 6 and the front side of the lower end face of the guide head 6 maintains a smooth transition.

[0030] The sharp corner of the front side of the unlocking frame 5 is fixedly connected to the rear end face of the guide head 6. A row of unlocking rollers 7 are arranged to rotate sequentially from front to back on the upper end face of the unlocking frame 5, and a row of unlocking rollers 7 are arranged to rotate sequentially from front to back on the lower end face of the unlocking frame 5. The arrangement direction of the row of unlocking rollers 7 on the upper side maintains the same inclination as the upper end face of the guide head 6, and the arrangement direction of the row of unlocking rollers 7 on the lower side maintains the same inclination as the lower end face of the guide head 6.

[0031] The unlocking frame 5 is a composite flame-retardant material component, which is easy to manufacture and maintain, and easy to replace.

[0032] The unlocking roller 7 is a small diameter roller made of nylon. The nylon roller is wear-resistant and not easy to damage the belt. During use, it does not need to be oiled, does not lock, and has good anti-magnetic properties. It has strong corrosion resistance and aging resistance, is corrosion-resistant, non-toxic and pollution-free, and can withstand repeated impacts and vibrations.

[0033] The guide head 6 is made of copper alloy, which has high corrosion resistance and good resistance to high humidity, acidic and alkaline environments. Copper alloy has good plasticity and is easy to process. At the same time, copper alloy has good fatigue resistance and anti-magnetic properties.

[0034] The working principle of the present invention is: During the operation of the upper conveyor belt 1 and the lower conveyor belt 2, the powdered bulk materials are transported by the lower conveyor belt 2. When the upper conveyor belt 1 and the lower conveyor belt 2 carrying the bulk materials pass through the locking mechanism, the edges of the upper conveyor belt 1 and the lower conveyor belt 2 that are not magnetically attracted first contact the locking wheels 10 of the upper and lower locking wheel assemblies 4 on the front side, and then contact the upper and lower corresponding locking wheels 10 on the rear side in sequence, so that the edges of the upper conveyor belt 1 and the lower conveyor belt 2 are magnetically attracted. After the upper conveyor belt 1 and the lower conveyor belt 2 pass through the locking mechanism, the permanent magnetic materials 8 on both sides of the upper conveyor belt 1 and the permanent magnetic materials 8 on both sides of the lower conveyor belt 2 are magnetically attracted and bonded, and the upper conveyor belt 1 and the lower conveyor belt 2 in the magnetic attraction area form a closed space, which can ensure that the powdered bulk materials transported on the lower conveyor belt 2 will not leak and will not generate dust.

[0035] By rotating the fixing rod 12 on the top plate and the bottom plate of the locking frame 3, the height of the fixing rod 12 can be adjusted, thereby adjusting the height of the fixing plate 14, and then applying a preload force to the high-strength spring 15. During use, the high-strength spring 15 applies the preload force to the corresponding locking wheel 10 on the upper side through the connecting rods 17 on both sides, thereby ensuring that the upper conveyor belt 1 and the lower conveyor belt 2 have sufficient extrusion force to contact each other during operation, and the upper conveyor belt 1 and the lower conveyor belt 2 are magnetically fixed to each other through the permanent magnetic material 8 to form a closed space.

[0036] When the bulk material is to be transported to the designated location, the edges of the upper conveyor belt 1 and the lower conveyor belt 2 are in contact with the left and right guide heads 6 respectively, and the left and right edges of the upper conveyor belt 1 and the lower conveyor belt 2 fixed by magnetic attraction are separated by the sharp corners on the front side of the guide heads 6, and are completely separated by the upper and lower rows of unlocking rollers 7 on the rear side, ensuring that the upper conveyor belt 1 and the lower conveyor belt 2 will not be magnetically fixed together after separation. In this way, the bulk material can be unloaded from the lower conveyor belt 2.

[0037] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A zipper type automatic opening and closing locking device for a belt conveyor, characterized in that: The invention comprises a locking mechanism, an unlocking mechanism, an upper conveyor belt (1), and a lower conveyor belt (2); the locking mechanism and the unlocking mechanism are arranged in front and back correspondence; the upper conveyor belt (1) and the lower conveyor belt (2) are arranged in upper and lower correspondence; the locking mechanism comprises left and right locking frames (3), each locking frame (3) is internally provided with two rows of locking wheel assemblies (4) rotatably, and the side edges of the upper conveyor belt (1) and the lower conveyor belt (2) are respectively located between the two rows of locking wheel assemblies (4) on the same side; the unlocking mechanism comprises left and right unlocking frames (5), each unlocking frame (5) is provided with a guide head (6) at the front end, each unlocking frame (5) is rotatably provided with two rows of unlocking rollers (7) rotatably, and the left and right unlocking frames (5) are respectively located between the two side edges of the upper conveyor belt (1) and the lower conveyor belt (2).

2. The zipper type automatic opening and closing locking device for a belt conveyor according to claim 1, characterized in that: A row of equidistant permanent magnetic materials (8) are fixedly arranged at the edges of both sides of the lower end surface of the upper conveyor belt (1), and a row of equidistant permanent magnetic materials (8) are fixedly arranged at the edges of both sides of the upper end surface of the lower conveyor belt (2). When the permanent magnetic materials (8) on both sides of the upper conveyor belt (1) and the permanent magnetic materials (8) on both sides of the lower conveyor belt (2) are magnetically attracted and bonded to each other, the upper conveyor belt (1) and the lower conveyor belt (2) in the magnetic attraction area form a closed space.

3. The zipper type automatic opening and closing locking device for a belt conveyor according to claim 2, characterized in that: The locking frame (3) is a U-shaped plate structure, and the U-shaped openings of the locking frames (3) on the left and right sides face each other; a row of locking wheel assemblies (4) equidistant from front to back are arranged at the lower end of the top plate and the upper end of the bottom plate of the locking frame (3), and the upper locking wheel assemblies (4) are arranged in a one-to-one correspondence with the lower locking wheel assemblies (4).

4. The zipper type automatic opening and closing locking device for a belt conveyor according to claim 3, characterized in that: The locking wheel assembly (4) comprises a locking wheel (10), a movable seat (9), a fixed seat (16), a connecting rod (17), a fixed plate (14), a fixed rod (12), a guide rod (11), and a spring (15).

5. The zipper type automatic opening and closing locking device for a belt conveyor according to claim 4, characterized in that: For the locking wheel assembly (4) on the upper side, the movable seat (9) is a U-shaped plate-like structure, and the U-shaped opening of the movable seat (9) is vertically downward; a locking wheel (10) is rotatably arranged inside the movable seat (9), and a vertical guide rod (11) is fixedly arranged on the left and right sides of the upper end surface of the movable seat (9), and two guide holes are correspondingly arranged on the top plate of the locking frame (3), and the upper ends of the two guide rods (11) are respectively slidably inserted into the two guide holes of the top plate; the top plate of the locking frame (3) is also provided with a threaded hole that passes through from top to bottom between the two guide holes, and a vertical fixing rod (12) is screwed inside the threaded hole, and a locking nut (13) is screwed on the upper end of the fixing rod (12), and the locking nut (13) is in contact with the upper end surface of the top plate of the locking frame (3); A horizontal fixed plate (14) is rotatably provided at the lower end of the movable seat (9), and the fixed rod (12) is slidably sleeved on the outer sides of the two guide rods (11); a spring (15) is sleeved on the outer side of each guide rod (11), the lower end of the spring (15) is connected to the upper end surface of the movable seat (9), and the upper end of the spring (15) is connected to the lower end surface of the fixed plate (14); two left-right symmetrical fixed seats (16) are provided on the front side of the movable seat (9), and the two fixed seats (16) are respectively fixedly connected to the lower end surface of the top plate of the locking frame (3), and a connecting rod (17) is rotatably provided on each fixed seat (16), and a waist-shaped groove is provided at one end of the connecting rod (17) away from the fixed seat (16), and the two ends of the rotating shaft of the locking wheel (10) are respectively inserted into the waist-shaped grooves of the two connecting rods (17).

6. The zipper type automatic opening and closing locking device for a belt conveyor according to claim 4, characterized in that: For the locking wheel assembly (4) on the lower side, the movable seat (9) is a U-shaped plate-like structure, and the U-shaped opening of the movable seat (9) is vertically upward; a locking wheel (10) is rotatably arranged inside the movable seat (9), and a vertical guide rod (11) is fixedly arranged on the left and right sides of the lower end surface of the movable seat (9), and two guide holes are correspondingly arranged on the bottom plate of the locking frame (3), and the lower ends of the two guide rods (11) are slidably inserted into the two guide holes of the bottom plate respectively; the bottom plate of the locking frame (3) is also provided with a threaded hole that passes through from top to bottom between the two guide holes, and a vertical fixing rod (12) is screwed inside the threaded hole, and a locking nut (13) is screwed on the lower end of the fixing rod (12), and the locking nut (13) contacts the lower end surface of the bottom plate of the locking frame (3); the fixing rod (12) A horizontal fixed plate (14) is rotatably provided at the upper end of the movable seat (9), and the fixed rod (12) is slidably sleeved on the outer sides of the two guide rods (11); a spring (15) is sleeved on the outer side of each guide rod (11), the upper end of the spring (15) is connected to the lower end surface of the movable seat (9), and the lower end of the spring (15) is connected to the upper end surface of the fixed plate (14); two left-right symmetrical fixed seats (16) are provided on the front side of the movable seat (9), and the two fixed seats (16) are respectively fixedly connected to the upper end surface of the bottom plate of the locking frame (3), and a connecting rod (17) is rotatably provided on each fixed seat (16), and a waist-shaped groove is provided at one end of the connecting rod (17) away from the fixed seat (16), and the two ends of the rotating shaft of the locking wheel (10) are respectively inserted into the waist-shaped grooves of the two connecting rods (17).

7. The zipper type automatic opening and closing locking device for a belt conveyor according to claim 4, characterized in that: The left and right edges of the upper conveyor belt (1) are in rolling contact with the locking wheels (10) of the locking wheel assembly (4) on the same upper side, and the left and right edges of the lower conveyor belt (2) are in rolling contact with the locking wheels (10) of the locking wheel assembly (4) on the same lower side. At this time, the left and right edges of the upper conveyor belt (1) and the lower conveyor belt (2) are in a mutually magnetically attracted state.

8. The zipper type automatic opening and closing locking device for a belt conveyor according to claim 1, characterized in that: The unlocking frame (5) is an isosceles triangle block structure, the sharp corner of the unlocking frame (5) faces the front side, and the upper end face and the lower end face of the unlocking frame (5) are symmetrically arranged; the rear side of the upper end face of the unlocking frame (5) is inclined upward, and the rear side of the lower end face of the unlocking frame (5) is inclined downward.

9. The zipper type automatic opening and closing locking device for a belt conveyor according to claim 8, characterized in that: The guide head (6) is an isosceles triangle block structure, the sharp corner of the guide head (6) faces the front side, the upper end face and the lower end face of the guide head (6) are symmetrically arranged, the rear side of the upper end face of the guide head (6) is inclined upward, and the rear side of the lower end face of the guide head (6) is inclined downward, and the connection between the front side of the upper end face of the guide head (6) and the front side of the lower end face of the guide head (6) maintains a smooth transition.

10. The zipper type automatic opening and closing locking device for a belt conveyor according to claim 9, characterized in that: The sharp corner of the front side of the unlocking frame (5) is fixedly connected to the rear end surface of the guide head (6); a row of unlocking rollers (7) are arranged on the upper end surface of the unlocking frame (5) so as to rotate in sequence from front to back, and a row of unlocking rollers (7) are arranged on the lower end surface of the unlocking frame (5) so as to rotate in sequence from front to back; the arrangement direction of the row of unlocking rollers (7) on the upper side maintains the same inclination as the upper end surface of the guide head (6), and the arrangement direction of the row of unlocking rollers (7) on the lower side maintains the same inclination as the lower end surface of the guide head (6).

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