CN114933127B - External belt backstop and belt conveyor - Google Patents

External belt backstop and belt conveyor Download PDF

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Publication number
CN114933127B
CN114933127B CN202210608796.3A CN202210608796A CN114933127B CN 114933127 B CN114933127 B CN 114933127B CN 202210608796 A CN202210608796 A CN 202210608796A CN 114933127 B CN114933127 B CN 114933127B
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China
Prior art keywords
proximity switch
belt
abutting surface
pawl
detection proximity
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CN202210608796.3A
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CN114933127A (en
Inventor
吕先平
张海滨
李道智
奚金鹏
张桂林
黄涛
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Baowu Group Echeng Iron and Steel Co Ltd
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Baowu Group Echeng Iron and Steel Co Ltd
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Priority to CN202210608796.3A priority Critical patent/CN114933127B/en
Publication of CN114933127A publication Critical patent/CN114933127A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G23/00Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
    • B65G23/24Gearing between driving motor and belt- or chain-engaging elements
    • B65G23/26Applications of clutches or brakes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G15/00Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
    • B65G15/30Belts or like endless load-carriers
    • B65G15/32Belts or like endless load-carriers made of rubber or plastics

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Conveyors (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

The embodiment of the invention provides an external belt backstop and a belt conveying device, and relates to the technical field of belt conveying. The external belt backstop and the belt conveying device comprise a support, a pawl, a ratchet wheel and an elastic component, wherein the pawl is used for being connected with a belt pulley shaft, the ratchet wheel is rotatably arranged on the support and is provided with a first abutting surface, the pawl is provided with a second abutting surface, the first abutting surface is used for abutting against the second abutting surface when the pawl rotates along a first preset direction, and wear-resistant layers are arranged on the first abutting surface and the second abutting surface; the elastic component sets up on the support to be connected with the ratchet, elastic component produces deformation under the condition of first butt face and second butt face butt, and elastic component resumes deformation under the condition that first butt face and second butt face are released the butt, can be convenient for on the basis of inspection maintenance at the backstop, also be difficult for taking place the condition of inefficacy.

Description

External belt backstop and belt conveyor
Technical Field
The invention relates to the technical field of belt conveying, in particular to an external belt backstop and a belt conveying device.
Background
The belt conveyor is widely applied to units such as mines, wharfs and steel production enterprises, a large part of the belt conveyor is a climbing belt with inclination, when the belt conveyor is stopped due to various reasons, the belt conveyor is easy to reverse under the action of the gravity of materials, after the belt is reversed, production accidents such as unloading materials from the tail wheel of the belt conveyor to the ground and the like are easy to occur, and meanwhile, safety accidents are also easy to cause. To prevent reverse rotation when the ramp belt is stopped, this is typically accomplished by mounting a backstop on the speed reducer or belt head pulley.
The existing finished product backstop is in a bearing seat structure form, and is sealed in the bearing seat, so that the backstop is not easy to inspect and maintain and is easy to fail.
Disclosure of Invention
The invention aims to provide an external belt backstop, which is not easy to fail on the basis of convenient inspection and maintenance.
The invention further aims to provide the belt conveying device, which is not easy to fail on the basis that the backstop can be conveniently inspected and maintained.
Embodiments of the invention may be implemented as follows:
the embodiment of the invention provides an external belt backstop, which comprises a support, a pawl, a ratchet wheel and an elastic component, wherein the pawl is used for being connected with a belt pulley shaft, the ratchet wheel is rotatably arranged on the support, the ratchet wheel is provided with a first abutting surface, the pawl is provided with a second abutting surface, the first abutting surface is used for abutting against the second abutting surface when the pawl rotates along a first preset direction, and wear-resistant layers are arranged on the first abutting surface and the second abutting surface;
the elastic component is arranged on the support and connected with the ratchet wheel, and the elastic component deforms under the condition that the first abutting surface and the second abutting surface are abutted so as to enable the ratchet wheel to rotate along a second preset direction; the elastic component recovers deformation under the condition that the first abutting surface and the second abutting surface are out of abutting connection, so that the ratchet wheel is reset;
wherein the first preset direction is opposite to the second preset direction.
Optionally, the elastic component includes screw rod, nut and spring, the nut with the screw rod cooperatees, the nut with the ratchet is connected, the spring housing is located on the screw rod, the one end of spring with the nut is connected, the other end of spring set up in on the support.
Optionally, a sinking table is arranged on the support, and one end of the spring, which is far away from the nut, is arranged in the sinking table.
Optionally, the ratchet has opposite first and second ends, the first end being remote from the pawl, the first abutment surface being provided at the second end;
the support is provided with a first detection proximity switch, the first detection proximity switch is electrically connected with an external electrical control box, and the first detection proximity switch is used for detecting a first end part;
when the first end part reaches the height of the first detection proximity switch in the moving process, the first detection proximity switch sends a first arrival signal to an external electric control box;
when the first end part does not reach the height of the first detection proximity switch in the moving process, the first detection proximity switch sends a first unreachable signal to an external electric control box.
Optionally, the second end has a first blocking surface, and the pawl has a second blocking surface, and the first blocking surface is configured to abut against the second blocking surface to prevent the pawl from rotating in a second preset direction.
Optionally, a second detection proximity switch is arranged on the support, the second detection proximity switch is electrically connected with the electrical control box, and the second detection proximity switch is used for detecting the second end part;
when the second end part reaches the height of the second detection proximity switch in the moving process, the second detection proximity switch sends a second arrival signal to an external electric control box;
and when the second end part does not reach the height of the second detection proximity switch in the moving process, the second detection proximity switch sends a second unreachable signal to an external electric control box.
Optionally, the support is provided with the cardboard, fixedly provided with location axle on the cardboard, the ratchet rotationally set up in on the location axle.
Optionally, the wear-resistant layer is a build-up welding wear-resistant layer.
The embodiment of the invention also provides a belt conveying device which comprises the external belt backstop.
Optionally, the device further comprises a belt pulley, a belt pulley shaft and a belt, wherein the belt is matched with the belt pulley, the belt pulley shaft is coaxially connected with the belt pulley, and one end of the belt pulley shaft extends to one side of the belt pulley and is connected with the pawl.
The external belt backstop and the belt conveying device provided by the embodiment of the invention have the beneficial effects that: in the normal conveying process of the belt conveying device, the belt pulley rotates in a first preset direction, the pawl is driven to rotate in the first preset direction, the pawl is abutted with a first abutting surface of the ratchet wheel and a second abutting surface of the pawl once in the process of rotating each circle, the pawl presses down the ratchet wheel, the elastic component deforms under the condition that the first abutting surface and the second abutting surface are abutted, and the ratchet wheel rotates along the second preset direction; the elastic component is restored to deform under the condition that the first abutting surface and the second abutting surface are not abutted, and the ratchet wheel is reset. And because the wear-resistant layers are arranged on the first abutting surface and the second abutting surface, the ratchet wheel and the pawl can work normally for a long time, and the situation of matching failure is not easy to occur.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a belt conveyor in an embodiment of the present application in a normal operation state;
FIG. 2 is a schematic diagram showing a belt conveyor in a reverse state according to an embodiment of the present application;
fig. 3 is a schematic structural view of an external belt backstop according to an embodiment of the present application.
Icon: 10-a belt conveyor; 100-an external belt backstop; 110-supporting seat; 111-a sinking platform; 112-a clamping plate; 1121-locating the shaft; 120-pawl; 121-a second abutment surface; 122-a second blocking surface; 130-ratchet wheel; 131-a first end; 132-a second end; 1321-a first abutment surface; 1322-a first blocking surface; 140-an elastic component; 141-a screw; 142-nuts; 143-a spring; 150-a wear-resistant layer; 160-a first detection proximity switch; 170-a second detection proximity switch; 200-belt pulley; 210-pulley shaft; 220-belt.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The inventor of this application discovers that current backstop that installs on band conveyer all is bearing frame structural style, and the backstop seals in the bearing frame, and difficult inspection is maintained, the condition of inefficacy appears easily. The present embodiment provides a belt conveying device at least for solving the technical problem.
Referring to fig. 1-3, the belt conveying device 10 provided in this embodiment includes an external belt backstop 100, a belt pulley 200, a belt pulley shaft 210 and a belt 220, wherein the belt 220 is matched with the belt pulley 200, the belt pulley shaft 210 is coaxially connected with the belt pulley 200, and one end of the belt pulley shaft 210 extends to the outer side of the belt pulley 200 and is connected with the external belt backstop 100.
In this embodiment, the belt 220 is inclined, one end of the pulley shaft 210 extends to one side of the pulley 200 and is connected to the external belt backstop 100, and the other end of the pulley shaft 210 extends to the other side of the pulley 200 and is connected to the decelerator and the motor. The external belt backstop 100 is arranged outside the belt pulley shaft 210, and can be convenient for maintenance personnel to overhaul.
Further, the external belt backstop 100 comprises a support 110, a pawl 120, a ratchet 130 and an elastic component 140, wherein the pawl 120 is used for being connected with the pulley shaft 210, the ratchet 130 is rotatably arranged on the support 110, the ratchet 130 is provided with a first abutting surface 1321, the pawl 120 is provided with a second abutting surface 121, the first abutting surface 1321 is used for abutting against the second abutting surface 121 when the pawl 120 rotates along a first preset direction, and the first abutting surface 1321 and the second abutting surface 121 are provided with a wear-resistant layer 150; the elastic component 140 is disposed on the support 110 and connected to the ratchet 130, and the elastic component 140 deforms when the first abutment surface 1321 abuts against the second abutment surface 121, so that the ratchet 130 rotates along a second preset direction; the elastic component 140 recovers deformation when the first abutting surface 1321 and the second abutting surface 121 are disengaged, so that the ratchet 130 is reset; wherein the first preset direction is opposite to the second preset direction.
In this embodiment, the support 110 is fixed on the ground, the ratchet 130 is a shaped ratchet, and one end of the pulley shaft 210 extends to one side of the pulley 200 and is in transmission connection with the pawl 120; the first abutting surface 1321 is arranged on the outer side surface of the ratchet wheel 130, the second abutting surface 121 is arranged at the end part of the pawl 120, and the second abutting surface 121 is an arc-shaped surface; the first preset direction is a counterclockwise direction, and the second preset direction is a clockwise direction.
During normal conveying of the belt conveying device 10, the pulley 200 rotates in a first preset direction, the pawl 120 is driven to rotate in the first preset direction, the pawl 120 abuts against the first abutting surface 1321 of the ratchet wheel 130 and the second abutting surface 121 of the pawl 120 once in each rotation process, the pawl 120 presses down the ratchet wheel 130, the elastic component 140 deforms under the condition that the first abutting surface 1321 abuts against the second abutting surface 121, and the ratchet wheel 130 rotates along the second preset direction; when the first contact surface 1321 and the second contact surface 121 are released from contact, the elastic member 140 returns to its deformed state, and the ratchet 130 returns to its original state. And because the wear-resistant layers 150 are arranged on the first abutting surface 1321 and the second abutting surface 121, the ratchet 130 and the pawl 120 can work normally for a long time, and the situation of matching failure is not easy to happen.
Optionally, the wear layer 150 is a build-up wear layer 150.
When the belt conveyor 10 is checked during the shutdown, a maintenance person can conveniently observe the abrasion loss of the abrasion-resistant layer 150, and when the abrasion loss is large, the welding treatment is performed.
Further, the elastic component 140 includes a screw 141, a nut 142 and a spring 143, the nut 142 is matched with the screw 141, the nut 142 is connected with the ratchet 130, the spring 143 is sleeved on the screw 141, one end of the spring 143 is connected with the nut 142, and the other end of the spring 143 is arranged on the support 110.
In this embodiment, the nut 142 is fixedly connected with the ratchet 130, the screw 141 is threaded in the nut 142 and is in threaded fit with the nut 142, and the spring 143 is arranged between the nut 142 and the support 110 and sleeved on the screw 141; because of the longer length of the spring 143, the upper and lower sections are shown as the same spring 143.
In the process of abutting the first abutting surface 1321 and the second abutting surface 121, the ratchet wheel 130 rotates at a small angle, the nut 142 moves along with the ratchet wheel 130 to press the spring 143, and the spring 143 deforms; when the first contact surface 1321 and the second contact surface 121 are released from contact, the ratchet 130 is returned by the restoring force of the spring 143.
In addition, the support 110 is provided with a sinking table 111, and an end of the spring 143 away from the nut 142 is disposed in the sinking table 111.
In this embodiment, the sinking platform 111 has a groove, and one end of the spring 143 away from the nut 142 is disposed in the groove, which plays a limiting role on the spring 143.
Further, the ratchet 130 has a first end 131 and a second end 132 opposite to each other, and the first abutment surface 1321 is disposed on the second end 132; the support 110 is provided with a first detection proximity switch 160, the first detection proximity switch 160 is electrically connected with an external electrical control box, and the first detection proximity switch 160 is used for detecting the first end 131; when the first end 131 reaches the height of the first detection proximity switch 160 during movement, the first detection proximity switch 160 sends a first arrival signal to an external electrical control box; when the first end 131 does not reach the height of the first detection proximity switch 160 during movement, the first detection proximity switch 160 sends a first unreachable signal to an external electrical control box.
In this embodiment, the first end 131 is far away from the pawl 120, the second end 132 is close to the pawl 120, and the first contact surface 1321 is disposed on an outer side surface of the second end 132 facing the pawl 120; the first detection proximity switch 160 is disposed on the support 110, the first detection proximity switch 160 is disposed on one side of the first end 131, the first detection proximity switch 160 is higher than the first end 131 when the first end 131 falls in the initial state of the spring 143, and the first detection proximity switch 160 can detect the first end 131 when the first end 131 is lifted in the compressed state of the spring 143.
During the rotation of the ratchet 130, the first end 131 is lifted or falls, when the first end 131 is lifted to reach the height of the first detection proximity switch 160, the first detection proximity switch 160 sends a first reaching signal to an external electric control box and a control chamber, which means that the lifting height of the first end 131 meets the requirement, that is, the wear-resistant layer 150 has lower wear degree; when the first end 131 is lifted, that is, when the first end 131 is not detected by the first detection proximity switch 160, a first not-reached signal is sent to an external electrical control box and a control room, which indicates that the lifting height of the first end 131 is not satisfactory, that is, the wear-resistant layer 150 is high in loss degree, the wear-resistant layer 150 needs to be welded, and at the moment, the control room sends an alarm signal to instruct a maintenance personnel to perform maintenance.
In addition, the second end 132 has a first blocking surface 1322, and the pawl 120 has a second blocking surface 122, and the first blocking surface 1322 is configured to abut against the second blocking surface 122 to prevent the pawl 120 from rotating in a second predetermined direction.
In this embodiment, the first blocking surface 1322 is disposed on an outer side surface of the second end 132 away from the first end 131, and the second blocking surface 122 is disposed on a side surface of the pawl 120 for abutting against the first blocking surface 1322.
When the belt conveyor 10 is stopped for reasons, the material on the belt 220 generates a torque in a second preset direction to the pulley 200, the pulley 200 rotates in the second preset direction, and the pawl 120 rotates along with the pulley 200 until the first blocking surface 1322 abuts against the second blocking surface 122, thereby preventing the pawl 120 and the pulley 200 from continuing to rotate.
In addition, the support 110 is provided with a second detection proximity switch 170, the second detection proximity switch 170 is electrically connected with the electrical control box, and the second detection proximity switch 170 is used for detecting the second end 132; when the second end 132 reaches the height of the second detection proximity switch 170 during movement, the second detection proximity switch 170 sends a second arrival signal to an external electrical control box; when the second end 132 does not reach the height of the second detection proximity switch 170 during movement, the second detection proximity switch 170 sends a second unreachable signal to an external electrical control box.
In this embodiment, the second detection proximity switch 170 is disposed on one side of the second end 132, the second detection proximity switch 170 can detect the second end 132 when the second end 132 is lifted up in the initial state of the spring 143, and the second detection proximity switch 170 is higher than the second end 132 when the second end 132 falls down in the compressed state of the spring 143.
During rotation of the ratchet 130, the second end 132 is lifted or falls, and when the second end 132 is lifted to reach the height of the second detection proximity switch 170, the second detection proximity switch 170 sends a second reaching signal to an external electric control box and a control chamber, which indicates that the lifting height of the second end 132 meets the requirement, that is, that the fatigue degree of the spring 143 is low; and when the second end 132 is lifted, that is, when the second end 170 is not detected by the second detection proximity switch 170, a second not-reached signal is sent to an external electric control box and a control room, which indicates that the lifting height of the second end 132 is not satisfactory, that is, the fatigue degree of the spring 143 is high, the spring 143 needs to be replaced, and at the moment, the control room sends an alarm signal to instruct a maintenance personnel to replace.
In addition, the support 110 is provided with a clamping plate 112, the clamping plate 112 is fixedly provided with a positioning shaft 1121, and the ratchet 130 is rotatably arranged on the positioning shaft 1121.
In this embodiment, the axial direction of the positioning shaft 1121 is parallel to the axial direction of the pulley shaft 210, and the positioning shaft 1121 is located substantially in the middle of the ratchet wheel 130, and the ratchet wheel 130 is rotatably connected to the positioning shaft 1121 and can rotate relative to the chuck plate 112.
In summary, the embodiment of the invention provides the external belt backstop 100 and the belt conveying device 10, in the normal conveying process of the belt conveying device 10, the pulley 200 rotates in the first preset direction to drive the pawl 120 to rotate in the first preset direction, the pawl 120 abuts against the first abutting surface 1321 of the ratchet 130 and the second abutting surface 121 of the pawl 120 once in each rotation process, the spring 143 deforms under the condition that the first abutting surface 1321 abuts against the second abutting surface 121, and the spring 143 returns to deform under the condition that the first abutting surface 1321 and the second abutting surface 121 are not abutted. The wear-resistant layers 150 are arranged on the first abutting surface 1321 and the second abutting surface 121, so that the ratchet 130 and the pawl 120 can work normally for a long time, and failure is not easy to occur; the first detection proximity switch 160 can detect the wearing state of the wear-resistant layer 150, and the second detection proximity switch 170 can detect the fatigue state of the spring 143, so that maintenance personnel can perform maintenance conveniently.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. The external belt backstop is characterized by comprising a support, a pawl, a ratchet wheel and an elastic component, wherein the pawl is used for being connected with a belt pulley shaft, the ratchet wheel is rotatably arranged on the support, the ratchet wheel is provided with a first abutting surface, the pawl is provided with a second abutting surface, the first abutting surface is used for abutting against the second abutting surface when the pawl rotates along a first preset direction, and wear-resistant layers are arranged on the first abutting surface and the second abutting surface;
the elastic component is arranged on the support and connected with the ratchet wheel, and the elastic component deforms under the condition that the first abutting surface and the second abutting surface are abutted so as to enable the ratchet wheel to rotate along a second preset direction; the elastic component recovers deformation under the condition that the first abutting surface and the second abutting surface are out of abutting connection, so that the ratchet wheel is reset;
wherein the first preset direction is opposite to the second preset direction;
the ratchet has opposite first and second ends, the first end being remote from the pawl, the first abutment surface being provided at the second end;
the support is provided with a first detection proximity switch, the first detection proximity switch is electrically connected with an external electrical control box, and the first detection proximity switch is used for detecting a first end part;
when the first end part reaches the height of the first detection proximity switch in the moving process, the first detection proximity switch sends a first arrival signal to an external electric control box;
when the first end part does not reach the height of the first detection proximity switch in the moving process, the first detection proximity switch sends a first unreachable signal to an external electric control box.
2. The external belt backstop of claim 1, wherein the elastic assembly comprises a screw, a nut and a spring, the nut is matched with the screw, the nut is connected with the ratchet wheel, the spring is sleeved on the screw, one end of the spring is connected with the nut, and the other end of the spring is arranged on the support.
3. The external belt backstop of claim 2, wherein a sinking table is provided on the support, and an end of the spring remote from the nut is disposed in the sinking table.
4. The external belt backstop of claim 1, wherein said second end has a first blocking surface and said pawl has a second blocking surface, said first blocking surface for abutting said second blocking surface to prevent rotation of said pawl in a second predetermined direction.
5. The external belt backstop of claim 1, wherein a second detection proximity switch is arranged on the support, the second detection proximity switch is electrically connected with the electrical control box, and the second detection proximity switch is used for detecting the second end part;
when the second end part reaches the height of the second detection proximity switch in the moving process, the second detection proximity switch sends a second arrival signal to an external electric control box;
and when the second end part does not reach the height of the second detection proximity switch in the moving process, the second detection proximity switch sends a second unreachable signal to an external electric control box.
6. The external belt backstop according to claim 1, wherein be provided with the cardboard on the support, fixedly be provided with the location axle on the cardboard, the ratchet rotationally set up in on the location axle.
7. The external belt backstop of claim 1, wherein said wear layer is a build-up wear layer.
8. A belt conveyor comprising an external belt backstop according to any one of claims 1-7.
9. The belt conveyor of claim 8, further comprising a pulley, a pulley shaft and a belt, the belt being mated with the pulley, the pulley shaft being coaxially coupled with the pulley, an end of the pulley shaft extending to one side of the pulley and being coupled with the pawl.
CN202210608796.3A 2022-05-31 2022-05-31 External belt backstop and belt conveyor Active CN114933127B (en)

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CN114933127B true CN114933127B (en) 2023-06-27

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