Anti-reverse rotation brake device for belt conveyor

Abstract

This invention relates to an anti-reverse braking device for belt conveyors, belonging to the field of conveyor technology. The conveyor has two first mounting seats fixedly mounted at the bottom of its support frame, and a fixed frame located within the conveyor belt is fixedly mounted at the bottom of the conveyor. A sliding rod is slidably mounted through one side of each of the first mounting seats, and the other end of the sliding rod is slidably connected through the fixed frame. Push bars are fixedly mounted at one end of each of the two sliding rods. This invention uses an electric push rod to drive the clamping bars to engage between the rotating roller and the conveyor belt, effectively preventing the conveyor belt from reversing. In the event of a power outage, the anti-reverse function can be manually activated via a second drive mechanism. Simultaneously, the fixing assembly can secure the boxes on the conveyor belt when the machine is stopped, ensuring the safety of the goods. Furthermore, the device also includes a pressure roller and a ratchet pawl structure to increase the stability of the conveyor belt and further prevent reversal. The overall design is reasonable and comprehensive, improving the safety and reliability of the belt conveyor.

Description

Technical Field

[0001] This invention belongs to the field of conveyor technology and relates to an anti-reverse braking device for belt conveyors. Background Technology

[0002] As a continuous transportation device, belt conveyors have been widely used in many industries such as mining, metallurgy, chemical industry, coal, power, building materials and ports due to their significant advantages such as high efficiency, stability and large carrying capacity. They can continuously and stably transport materials from one location to another, greatly improving production efficiency and reducing labor costs, and have become an indispensable key equipment in modern industrial production.

[0003] However, in actual operation, belt conveyors also face many problems that urgently need to be solved. Among them, conveyor belt reversal is an extremely serious and common problem. When a belt conveyor starts at full load, stops suddenly, or encounters a large load impact, the material on the conveyor belt has inertia, which can easily cause the conveyor belt to reverse. Once the conveyor belt reverses, it will not only cause material to spill, resulting in waste of resources and environmental pollution, but may also cause equipment damage, such as conveyor belt tearing, overload damage to the drive unit, etc. In severe cases, it may even endanger the lives of operators.

[0004] Furthermore, when a belt conveyor stops, there may still be unfinished goods left on the conveyor belt. This is especially true for boxed goods that are easy to roll or slip off. Due to the lack of effective securing measures, these goods can easily slip or shift during the shutdown process due to the inertia of the conveyor belt or other factors, resulting in damage to the goods and increasing the company's economic losses.

[0005] Therefore, we propose an anti-reverse braking device for belt conveyors to solve the problems mentioned above. Summary of the Invention

[0006] In view of this, in order to solve the problem that some anti-reverse devices can only work under normal power supply conditions, and cannot play their anti-reverse role in the event of an emergency such as a power outage, and the conveyed goods cannot be fixed, the present invention provides an anti-reverse braking device for belt conveyors.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An anti-reverse braking device for a belt conveyor includes a conveyor, two first mounting seats are fixedly provided at the bottom of the support of the conveyor, a fixed frame located inside the conveyor belt is fixedly provided at the bottom of the conveyor, a sliding rod is slidably provided through one side of the first mounting seat, the other end of the sliding rod is slidably connected through the fixed frame, a push bar is fixedly provided at one end of the two sliding rods, and a clamping bar located between the rotating roller and the conveyor belt is fixedly provided on one side of the push bar.

[0009] Multiple support legs are fixedly mounted on the bottom of the conveyor bracket to support the conveyor. A second mounting base is fixedly mounted on one side of one of the support legs near the sliding rod. An electric push rod for driving the sliding rod to move is fixedly mounted on the top of the second mounting base to drive the clamping strip to lock between the rotating roller and the conveyor belt to prevent the conveyor belt from reversing.

[0010] The second drive mechanism is mounted on the second mounting base and works in conjunction with the electric push rod to manually drive the clamping strip to lock between the rotating roller and the conveyor belt after power failure.

[0011] The fixing component is installed on the conveyor and works in conjunction with the second drive mechanism to fix the box on the conveyor belt when the machine stops.

[0012] Furthermore, the second drive mechanism includes a cylinder body fixedly mounted on the top of the second mounting base. The cylinder body is divided into multiple cavities. A piston rod is slidably mounted through one side of the cylinder body. A piston head located in one of the multiple cavities is fixedly sleeved on the outer wall of the piston rod. A third spring is sleeved on the outer wall of the piston rod. The two ends of the third spring are respectively fixedly connected to one side of the piston head and one side of the inner wall of the cylinder body. A connecting strip is fixedly mounted between one end of the piston rod and the sliding rod. An insert rod is fixedly mounted on one side of the connecting strip. One end of the insert rod is inserted into the output end of the electric push rod. Corresponding insertion holes are opened on the outer walls of the output end of the electric push rod and the insert rod. The same pin is inserted into the two insertion holes. A drive component is provided on the conveyor for releasing the fixing of the insert rod and the electric push rod.

[0013] Furthermore, the driving component includes two second guide rods fixedly disposed on one side of the support leg. The outer walls of the two second guide rods are slidably fitted with the same sliding block. The two sliding blocks on the same side are fixedly disposed with the same second fixing rod. One end of the pin is connected to the corresponding second fixing rod. The outer wall of the second guide rod is fitted with a fourth spring. The two ends of the fourth spring are respectively fixedly connected to one end of the outer wall of the second guide rod and one side of the sliding block. The positions of the fourth springs on both sides are opposite. Multiple connecting brackets are fixedly disposed between the two second fixing rods.

[0014] Furthermore, a rotating plate is rotatably provided on the inner side of the first mounting base, one end of the rotating plate is inclined downward, and the same second connecting rod is fixed between the two rotating plates. A pressure roller is sleeved on the outer wall of the second connecting rod. A fixing plate is fixedly provided on the inner side of the first mounting base, and the other end of the fixing plate is inclined upward and fixedly provided with a first fixing rod. A roller is rotatably sleeved on the outer wall of the first fixing rod. The conveyor belt on the conveyor is located between the pressure roller and the roller.

[0015] Furthermore, a first guide rod is fixedly provided on one side of one of the first mounting seats. A push plate is slidably sleeved on the outer wall of the first guide rod and the sliding rod. One side of the push plate abuts against the second connecting rod. A second spring located on one side of the push plate is sleeved on the outer wall of the sliding rod. The two ends of the second spring are fixedly connected to one side of the push plate and the outer wall of the sliding rod, respectively, for driving the pressure roller to approach the two rollers to clamp the conveyor belt. A first spring located between the fixed frame and the first mounting seat is sleeved on the outer wall of the sliding rod. The two ends of the first spring are fixedly connected to one side of the fixed frame and the outer wall of the sliding rod, respectively.

[0016] Furthermore, a first connecting rod is fixedly provided at both ends of the push bar, a ratchet is fixedly sleeved on the outer wall of the rotating roller of the conveyor, a pawl is rotatably provided at the top of the first connecting rod, and a support block for supporting the pawl is fixedly provided on the outer side of the conveyor.

[0017] Furthermore, the fixing assembly includes two mounting plates fixedly installed on the top of the conveyor bracket. Multiple cylinders are fixedly installed through one side of the mounting plate. The output ends of the multiple cylinders are fixedly installed with the same clamping plate. The air inlet end of the cylinder is connected to the corresponding cavity through a pipe.

[0018] Furthermore, a mounting hole corresponding to the cylinder is provided on one side of the clamping plate, and a screw is rotatably installed in the mounting hole. The other end of the screw is threaded to the output end of the cylinder to increase the moving distance of the clamping plate.

[0019] Furthermore, the pressure roller is sleeved on the second connecting rod via a one-way bearing to increase the friction with the conveyor belt without affecting the normal operation of the conveyor belt.

[0020] Furthermore, a sliding ring is slidably sleeved on the outer wall of the second fixing rod near the pin, and one end of the pin is fixedly connected to the sliding ring.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The anti-reverse braking device for a belt conveyor disclosed in this invention, by setting a first mounting base, sliding rod, push bar and clamp bar at the bottom of the conveyor support, and in conjunction with the electric push rod drive, can quickly clamp the clamp bar between the rotating roller and the conveyor belt when the machine stops, effectively preventing the conveyor belt from reversing and ensuring the safe operation of the conveyor. Furthermore, the push bar is provided with a first connecting rod at both ends, a ratchet is fixedly sleeved on the outer wall of the rotating roller, and a pawl is rotatably provided at the top of the first connecting rod. Through the cooperation of the pawl and the ratchet, the rotating roller is further prevented from reversing, thus enhancing the anti-reverse braking effect of the device.

[0023] 2. The anti-reverse braking device for belt conveyors disclosed in this invention, by setting a second drive mechanism, allows the device to release the fixing of the insert rod and electric push rod by manually operating the drive component in emergency situations such as power failure. The clamping strip is then manually driven to lock between the rotating roller and the conveyor belt by using the piston rod, connecting strip and other structures, thereby achieving the anti-reverse function and improving the device's emergency handling capability in special situations.

[0024] 3. The anti-reverse braking device for a belt conveyor disclosed in this invention is used in conjunction with a second drive mechanism through a fixing component. When the conveyor stops, the change in air pressure inside the cylinder drives the cylinder to move the clamping plate to fix the box on the conveyor belt, preventing the goods from slipping or shifting due to the inertia of the conveyor belt or other factors during the stopping process, thus ensuring the safety of the goods.

[0025] 4. The anti-reverse braking device for a belt conveyor disclosed in this invention comprises a rotating plate, a second connecting rod, a pressure roller, a fixed plate, a first fixed rod, and a roller, etc., arranged inside the first mounting base. The pressure roller is sleeved on the second connecting rod through a one-way bearing. When the conveyor belt is running normally, the pressure roller can rotate with the movement of the conveyor belt, increasing the friction with the conveyor belt and ensuring the normal operation of the conveyor belt. When the conveyor belt tends to reverse, the one-way bearing will prevent the pressure roller from rotating in the opposite direction, preventing the conveyor belt from reversing. When the sliding rod moves, it pushes the second connecting rod to rotate through the push plate, causing the pressure roller to move closer to the roller and clamp the conveyor belt, increasing the stability of the conveyor belt during operation and further fixing the conveyor belt, effectively ensuring that the conveyor belt will not move in the opposite direction.

[0026] This invention uses an electric push rod to drive a clamping strip between the rotating roller and the conveyor belt, effectively preventing the conveyor belt from reversing. In the event of a power outage, the anti-reversal function can be manually activated through a second drive mechanism. At the same time, the fixing component can secure the boxes on the conveyor belt when the machine is stopped, ensuring the safety of the goods. In addition, the device is equipped with a pressure roller and a ratchet pawl structure to increase the stability of the conveyor belt and further prevent reversal. The overall design is reasonable and the functions are comprehensive, improving the safety and reliability of the belt conveyor.

[0027] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0028] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0029] Figure 1 This is a three-dimensional structural schematic diagram of an anti-reverse braking device for a belt conveyor according to the present invention;

[0030] Figure 2 This is a three-dimensional structural schematic diagram from another perspective of the anti-reverse braking device for a belt conveyor according to the present invention;

[0031] Figure 3 This is a schematic diagram of the pusher mounting position structure of an anti-reverse braking device for a belt conveyor according to the present invention;

[0032] Figure 4 for Figure 1 Enlarged structural diagram of section A in the middle;

[0033] Figure 5 for Figure 3 Enlarged structural diagram of section B in the middle;

[0034] Figure 6 This is a schematic diagram of the electric push rod and cylinder mounting structure of an anti-reverse braking device for a belt conveyor according to the present invention;

[0035] Figure 7 This is a schematic cross-sectional view of the cylinder body of an anti-reverse braking device for a belt conveyor according to the present invention;

[0036] Figure 8 This is a schematic cross-sectional view of the clamping plate structure of an anti-reverse braking device for a belt conveyor according to the present invention;

[0037] Figure 9 This is a schematic diagram of the drive frame structure of an anti-reverse braking device for a belt conveyor according to the present invention.

[0038] Reference numerals: 1. Conveyor; 2. Mounting plate; 3. Clamping plate; 4. Cylinder; 5. Support leg; 6. First mounting base; 7. Fixing frame; 8. Sliding rod; 9. First spring; 10. Push bar; 11. Clamping bar; 12. First connecting rod; 13. Pawl; 14. Support block; 15. Ratchet; 16. Rotating plate; 17. Second connecting rod; 18. Pressure roller; 19. First guide rod; 20. Push plate; 21. Fixing plate; 22. First fixing... 23. Rod; 24. Roller; 25. Second spring; 26. Second mounting base; 27. Electric push rod; 28. Cylinder body; 29. ​​Piston rod; 30. Connecting bar; 31. Insert rod; 32. Insertion hole; 33. Pin; 34. Cavity; 35. Piston head; 36. Third spring; 37. Mounting hole; 38. Screw; 39. Second fixing rod; 40. Connecting bracket; 41. Sliding block; 42. Second guide rod; 43. Fourth spring; 44. Sliding ring. Detailed Implementation

[0039] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0040] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0041] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0042] Example 1

[0043] like Figures 1-9 As shown, an anti-reverse braking device includes a conveyor 1, a plurality of support legs 5, and various components mounted on the conveyor 1 and the support legs 5.

[0044] Two first mounting seats 6 are fixedly installed at the bottom of the support of the conveyor 1, and a fixed frame 7 located inside the conveyor belt is fixedly installed at the bottom of the conveyor 1. A sliding rod 8 is slidably installed through one side of the first mounting seat 6, and the other end of the sliding rod 8 is slidably connected through the fixed frame 7. A push bar 10 is fixedly installed at one end of the two sliding rods 8, and a clamping bar 11 located between the rotating roller and the conveyor belt is fixedly installed on one side of the push bar 10. When the sliding rod 8 moves, it will drive the push bar 10 and the clamping bar 11 to move, thereby pushing the clamping bar 11 between the rotating roller and the conveyor belt. At this time, when the conveyor belt moves in the opposite direction, the clamping bar 11 can be used to block the conveyor belt and the rotating roller, thus preventing the conveyor belt from moving in the opposite direction.

[0045] Multiple support legs 5 are fixedly mounted on the bottom of the support frame of the conveyor 1 to support the conveyor 1. A second mounting base 25 is fixedly mounted on one side of one of the support legs 5 near the sliding rod 8, and an electric push rod 26 for driving the sliding rod 8 to move is fixedly mounted on the top of the second mounting base 25. When the output end of the electric push rod 26 extends or retracts, it pushes the sliding rod 8 to move, thereby driving the clamping strip 11 to lock between the rotating roller and the conveyor belt to prevent the conveyor belt from reversing.

[0046] The second drive mechanism is mounted on the second mounting base 25 and works in conjunction with the electric push rod 26. The second drive mechanism includes a cylinder 27 fixedly mounted on the top of the second mounting base 25, with multiple cavities 33 within the cylinder 27. A piston rod 28 is slidably mounted through one side of the cylinder 27, and a piston head 34 located within the multiple cavities 33 is fixedly fitted onto the outer wall of the piston rod 28. A third spring 35 is fitted onto the outer wall of the piston rod 28, with both ends of the third spring 35 fixedly connected to one side of the piston head 34 and one side of the inner wall of the cylinder 27, respectively. A connecting strip 29 is fixedly mounted between one end of the piston rod 28 and the sliding rod 8, and an insertion rod 30 is fixedly mounted on one side of the connecting strip 29. One end of the insertion rod 30 is inserted into the output end of the electric push rod 26. Corresponding insertion holes 31 are provided on the output end of the electric push rod 26 and the outer wall of the insertion rod 30, with the same pin 32 inserted into both insertion holes 31. When manual drive is required, the pin 32 is pulled out to release the fixing of the insert rod 30 and the electric push rod 26. At this time, the piston rod 28 can be reset and extended under the force of the third spring 35. During the extension of the piston rod 28, the sliding rod 8 can be moved through the connecting bar 29, thereby driving the clamping bar 11 to be stuck between the rotating roller and the conveyor belt. When it is necessary to release the obstruction to the conveyor belt and the rotating roller, the electric push rod 26 needs to be activated to extend, so that the output end of the electric push rod 26 is inserted into the insert rod 30. After inserting the pin 32 into the two insertion holes 31, the electric push rod 26 is retracted, which can drive the sliding rod 8 to reset and move, and use the connecting bar 29 to drive the piston rod 28 to reset and move, and use the piston head 34 to compress the third spring 35.

[0047] The conveyor 1 is equipped with a drive mechanism for releasing the fixing of the insertion rod 30 and the electric push rod 26. The drive mechanism includes two second guide rods 41 fixedly mounted on one side of the support leg 5. The outer walls of the two second guide rods 41 are slidably fitted with the same sliding block 40. The two sliding blocks 40 on the same side are fixedly connected to the same second fixing rod 38. One end of the pin 32 is connected to the corresponding second fixing rod 38. The outer walls of the second guide rods 41 are fitted with fourth springs 42. The two ends of the fourth springs 42 are fixedly connected to one end of the outer wall of the second guide rod 41 and one side of the sliding block 40, respectively. The positions of the fourth springs 42 on both sides are opposite. Multiple connecting brackets 39 are fixedly mounted between the two second fixing rods 38. When it is necessary to release the fixing, simply push one side of the second fixing rod 38 so that it can drive the sliding block 40 to slide on the second guide rod 41, compressing and stretching the corresponding fourth spring 42, so that the pin 32 is pulled out of the insertion hole 31. A sliding ring 43 is slidably sleeved on the outer wall of the second fixing rod 38 near the pin 32. One end of the pin 32 is fixedly connected to the sliding ring 43. The sliding ring 43 can make the movement of the pin 32 more stable and can effectively prevent the pin 32 from getting stuck as the electric push rod 26 moves. When the second fixing rod 38 is released, the sliding block 40 can be reset and moved under the force of the fourth spring 42.

[0048] The fixing assembly includes two mounting plates 2 fixedly mounted on the top of the support of the conveyor 1. Multiple cylinders 4 are fixedly mounted through one side of the mounting plates 2. The output ends of the multiple cylinders 4 are fixedly connected to the same clamping plate 3. The air inlet of the cylinders 4 is connected to the corresponding cavity 33 via a pipe. Simultaneously, a certain amount of gas is filled into the cavity 33. When the piston rod 28 drives the piston head 34 to move within the cavity 33, it can compress the gas in the cylinder body 27, causing the gas to enter the cylinder 4 through the pipe. This drives the output end of the cylinder 4 to extend, thereby causing the clamping plates 3 on both sides to move relative to each other, clamping and fixing the boxes on the conveyor belt. One side of the clamping plate 3 has a mounting hole 36 corresponding to the cylinder 4. A screw 37 is rotatably mounted in the mounting hole 36. The other end of the screw 37 is threaded to the output end of the cylinder 4. By rotating the screw 37, the moving distance of the clamping plate 3 can be increased to accommodate boxes of different sizes. When the piston rod 28 resets, it can extract the gas from the cylinder 4, allowing the gas to re-enter the cavity 33.

[0049] Example 2

[0050] Reference Figures 1-9 This invention provides a novel technical solution: an anti-reverse braking device for a belt conveyor. It includes a rotating plate 16 rotatably mounted inside a first mounting base 6, one end of which is inclined downwards. A second connecting rod 17 is fixedly mounted between two rotating plates 16, and a pressure roller 18 is sleeved on the outer wall of the second connecting rod 17. A fixing plate 21 is fixedly mounted inside the first mounting base 6, and a first fixing rod 22 is fixedly mounted at the other end of the fixing plate 21, which is inclined upwards. A roller 23 is rotatably sleeved on the outer wall of the first fixing rod 22. The conveyor belt on the conveyor 1 is located between the pressure roller 18 and the roller 23. A first guide rod 19 is fixedly mounted on one side of one of the first mounting bases 6. A push plate 20 is slidably sleeved on the outer wall of the first guide rod 19 and a sliding rod 8. One side of the push plate 20 abuts against the second connecting rod 17. A second spring 24 is sleeved on the outer wall of the sliding rod 8, located on one side of the push plate 20. The two ends of the second spring 24 are fixedly connected to one side of the push plate 20 and the outer wall of the sliding rod 8, respectively. When the sliding rod 8 moves, the push plate 20 slides on the first guide rod 19 and the sliding rod 8 under the force of the second spring cover 24, compressing the second spring 24. During the movement of the push plate 20, it pushes the second connecting rod 17 to rotate, causing the pressure roller 18 to move closer to the two rollers 23 and clamp the conveyor belt. The outer wall of the sliding rod 8 is fitted with a first spring 9 located between the fixed frame 7 and the first mounting seat 6. The two ends of the first spring 9 are fixedly connected to one side of the fixed frame 7 and the outer wall of the sliding rod 8, respectively. The first spring 9 can play the role of buffering and resetting.

[0051] Both ends of the pusher 10 are fixedly provided with first connecting rods 12. A ratchet 15 is fixedly sleeved on the outer wall of the rotating roller of the conveyor 1. A pawl 13 is rotatably provided at the top of the first connecting rod 12. A support block 14 for supporting the pawl 13 is fixedly provided on the outer side of the conveyor 1. When the pusher 10 moves, it can drive the pawl 13 to move closer to the ratchet 15, so that the pawl 13 engages with the ratchet 15, which can prevent the rotating roller from reversing. At the same time, during the reset process, the pawl 13 moves away from the ratchet 15 to avoid wear caused by prolonged contact.

[0052] The pressure roller 18 is mounted on the second connecting rod 17 via a one-way bearing. When the conveyor belt is running normally, the pressure roller 18 can rotate with the movement of the conveyor belt, increasing the friction with the conveyor belt without affecting the normal operation of the conveyor belt. When the conveyor belt tends to reverse, the one-way bearing of the pressure roller 18 will prevent it from rotating in the opposite direction, further preventing the conveyor belt from reversing.

[0053] Working principle: When in use, the device is powered on and the motor drives the conveyor 1 to run. During the operation of the conveyor 1, the electric push rod 26 is in a retracted state. When the power of the motor is disconnected, the conveyor 1 stops running and the electric push rod 26 extends. During the extension, the electric push rod 26 can drive the connecting bar 29 to move through the insert rod 30. The movement of the connecting bar 29 can drive the sliding rod 8 to move. During the movement of the sliding rod 8, the second spring 24 can push the push plate 20 to move. During the movement of the push plate 20, the second connecting rod 17 can be driven to tilt downward, so that the pressure roller 18 and the roller 23 clamp the conveyor belt. At the same time, the movement of the sliding rod 8 can drive the push bar 10 to move. During the movement of the push bar 10, the clamping bar 11 can be moved between the conveyor roller and the conveyor belt. In this way, the clamping bar 11 can block the conveyor roller and the conveyor belt during the reversal.

[0054] During the movement of the push bar 10, it can also drive the first connecting rod 12 to move. The movement of the first connecting rod 12 can drive the pawl 13 to move closer to the ratchet 15. When the pawl 13 contacts the ratchet 15, it can cooperate with the inclined surface on the outside of the ratchet 15 to make the pawl 13 flip upward until the pawl 13 and the ratchet 15 collide. At this time, the ratchet 15 will not reverse.

[0055] As the connecting bar 29 moves outward, it can drive the piston rod 28 to move. The movement of the piston rod 28 can drive the piston head 34 to move. As the piston head 34 moves, it can squeeze the gas in the cavity 33, allowing the gas to enter the cylinder 4 through the pipe. After entering, the output end of the cylinder 4 will extend, which can drive the screw 37 to move. The movement of the screw 37 can drive the clamping plate 3 to move. The two clamping plates 3 approach each other and can clamp and fix the box on the conveyor belt.

[0056] However, as is well known to those skilled in the art, the working principle and wiring method of the electric actuator 26 are commonplace and are all conventional means or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A reverse braking device for a belt conveyor, characterized in that, Includes a conveyor (1), the bottom of the support of the conveyor (1) is fixedly provided with two first mounting seats (6), the bottom of the conveyor (1) is fixedly provided with a fixed frame (7) located in the conveyor belt, a sliding rod (8) is slidably provided through one side of the first mounting seat (6), the other end of the sliding rod (8) is slidably connected through the fixed frame (7), a push bar (10) is fixedly provided at one end of the two sliding rods (8), and a clamping bar (11) located between the rotating roller and the conveyor belt is fixedly provided on one side of the push bar (10); Multiple support legs (5) are fixedly mounted on the bottom of the support frame of the conveyor (1) for supporting the conveyor (1). A second mounting seat (25) is fixedly mounted on one side of one of the support legs (5) near the sliding rod (8). An electric push rod (26) for driving the sliding rod (8) to move is fixedly mounted on the top of the second mounting seat (25) for driving the clamping bar (11) to be locked between the rotating roller and the conveyor belt to prevent the conveyor belt from reversing. The second drive mechanism is set on the second mounting base (25) and works in conjunction with the electric push rod (26) to manually drive the clamp (11) to lock between the rotating roller and the conveyor belt after power failure; The fixing component is set on the conveyor (1) and used in conjunction with the second drive mechanism to fix the box on the conveyor belt when the machine stops.

2. The anti-reverse braking device for a belt conveyor according to claim 1, characterized in that, The second driving mechanism includes a cylinder (27) fixedly mounted on the top of the second mounting base (25). The cylinder (27) is divided into multiple cavities (33). A piston rod (28) is slidably mounted through one side of the cylinder (27). A piston head (34) located in the multiple cavities (33) is fixedly sleeved on the outer wall of the piston rod (28). A third spring (35) is sleeved on the outer wall of the piston rod (28). The two ends of the third spring (35) are fixedly connected to one side of the piston head (34) and one side of the inner wall of the cylinder (27), respectively. One end of the piston rod (28) is fixedly connected to the sliding rod (8) by the same connecting strip (29). One side of the connecting strip (29) is fixedly provided with a plug rod (30). One end of the plug rod (30) is inserted into the output end of the electric push rod (26). The output end of the electric push rod (26) and the outer wall of the plug rod (30) are both provided with corresponding insertion holes (31). The same pin (32) is inserted into the two insertion holes (31). The conveyor (1) is provided with a driving component for releasing the plug rod (30) and the electric push rod (26) from being fixed.

3. The anti-reverse braking device for a belt conveyor according to claim 2, characterized in that, The driving component includes two second guide rods (41) fixedly mounted on one side of the support leg (5). The outer walls of the two second guide rods (41) are slidably fitted with the same sliding block (40). The two sliding blocks (40) on the same side are fixedly fitted with the same second fixing rod (38). One end of the pin (32) is connected to the corresponding second fixing rod (38). The outer walls of the second guide rods (41) are fitted with a fourth spring (42). The two ends of the fourth spring (42) are fixedly connected to one end of the outer wall of the second guide rod (41) and one side of the sliding block (40), respectively. The positions of the fourth springs (42) on both sides are opposite. Multiple connecting brackets (39) are fixedly fitted between the two second fixing rods (38).

4. The anti-reverse braking device for a belt conveyor according to claim 1, characterized in that, A rotating plate (16) is rotatably provided on the inner side of the first mounting base (6). One end of the rotating plate (16) is inclined downward. The same second connecting rod (17) is fixed between the two rotating plates (16). A pressure roller (18) is sleeved on the outer wall of the second connecting rod (17). A fixing plate (21) is fixedly provided on the inner side of the first mounting base (6). The other end of the fixing plate (21) is inclined upward and fixedly provided with a first fixing rod (22). A roller (23) is rotatably sleeved on the outer wall of the first fixing rod (22). The conveyor belt on the conveyor (1) is located between the pressure roller (18) and the roller (23).

5. The anti-reverse braking device for a belt conveyor according to claim 4, characterized in that, One of the first mounting bases (6) is fixedly provided with a first guide rod (19) on one side. The outer wall of the first guide rod (19) and the sliding rod (8) is slidably fitted with a push plate (20). One side of the push plate (20) abuts against the second connecting rod (17). The outer wall of the sliding rod (8) is fitted with a second spring (24) located on one side of the push plate (20). The two ends of the second spring (24) are fixedly connected to one side of the push plate (20) and the outer wall of the sliding rod (8) respectively, for driving the pressure roller (18) to approach the two rollers (23) to clamp the conveyor belt. The outer wall of the sliding rod (8) is fitted with a first spring (9) located between the fixed frame (7) and the first mounting base (6). The two ends of the first spring (9) are fixedly connected to one side of the fixed frame (7) and the outer wall of the sliding rod (8) respectively.

6. The anti-reverse braking device for a belt conveyor according to claim 5, characterized in that, Both ends of the push bar (10) are fixedly provided with a first connecting rod (12), the outer wall of the rotating roller of the conveyor (1) is fixedly fitted with a ratchet (15), the top end of the first connecting rod (12) is rotatably provided with a pawl (13), and the outer side of the conveyor (1) is fixedly provided with a support block (14) for supporting the pawl (13).

7. The anti-reverse braking device for a belt conveyor according to claim 2, characterized in that, The fixing assembly includes two mounting plates (2) fixedly installed on the top of the support of the conveyor (1). Multiple cylinders (4) are fixedly installed through one side of the mounting plate (2). The output ends of the multiple cylinders (4) are fixedly provided with the same clamping plate (3). The air inlet end of the cylinder (4) is connected to the corresponding cavity (33) through a pipe.

8. The anti-reverse braking device for a belt conveyor according to claim 7, characterized in that, The clamping plate (3) has a mounting hole (36) on one side corresponding to the cylinder (4). A screw (37) is rotatably installed in the mounting hole (36). The other end of the screw (37) is threaded to the output end of the cylinder (4) to increase the moving distance of the clamping plate (3).

9. The anti-reverse braking device for a belt conveyor according to claim 4, characterized in that, The pressure roller (18) is sleeved on the second connecting rod (17) through a one-way bearing to increase the friction with the conveyor belt without affecting the normal operation of the conveyor belt.

10. The anti-reverse braking device for a belt conveyor according to claim 3, characterized in that, A sliding ring (43) is slidably sleeved on the outer wall of the second fixing rod (38) near the pin (32), and one end of the pin (32) is fixedly connected to the sliding ring (43).

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