Anti-reversion braking device for belt conveyor

Abstract

The invention relates to an anti-reversion braking device for a belt conveyor, and belongs to the technical field of conveyors. The device comprises a conveyor, two first mounting bases are fixedly arranged at the bottom of a support of the conveyor, a fixing frame located in a conveying belt is fixedly arranged at the bottom of the conveyor, a sliding rod is slidably arranged on one side of each first mounting base in a penetrating mode, and the other end of each sliding rod is slidably connected with the corresponding fixing frame in a penetrating mode; according to the device, the electric push rods drive the clamping strips to be clamped between the rotating rollers and the conveying belt, and the conveying belt is effectively prevented from reversing; the anti-reversion function can be manually realized through the second driving mechanism during power failure; meanwhile, the fixing assembly can fix the box body on the conveying belt during shutdown, so that the safety of goods is guaranteed; in addition, the device is further provided with a pressing roller and a ratchet wheel and pawl structure, the stability of the conveying belt is improved, reversion is further prevented, the overall design is reasonable, the functions are comprehensive, and the safety and reliability of the belt conveyor are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of conveyors and relates to an anti-reversal braking device for a belt conveyor. Background Art

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

[0003] However, in the actual operation process, belt conveyors also face many problems that need to be solved urgently. Among them, conveyor belt reversal is an extremely serious and common problem. When the belt conveyor is started at full load, suddenly stopped 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, causing waste of resources and environmental pollution, but may also cause equipment damage, such as tearing of the conveyor belt, overload damage of the drive device, etc. In severe cases, it may even endanger the life safety of the operator.

[0004] In addition, when the belt conveyor stops, there may still be unconveyed goods left on the conveyor belt, especially for some box-type goods that are easy to roll or slide. Due to the lack of effective fixing measures, these goods can easily slide or shift during the shutdown process due to the inertia of the conveyor belt or other factors, causing damage to the goods and increasing the company's economic losses.

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

[0006] In view of this, the present invention provides an anti-reversal brake device for a belt conveyor in order to solve the problem that some anti-reversal devices can only work under normal power supply conditions, cannot play an anti-reversal role once an emergency such as power outage occurs, and the transported goods cannot be fixed.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] An anti-reversal braking device for a belt conveyor comprises a conveyor, wherein two first mounting seats are fixedly provided at the bottom of a bracket of the conveyor, a fixing frame located in 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 with the fixing frame, a push strip is fixedly provided at one end of the two sliding rods, and a clamping strip located between a rotating roller and the conveyor belt is fixedly provided on one side of the push strip;

[0009] A plurality of support legs, each of which is fixedly mounted at the bottom of a support frame of the conveyor and used to support the conveyor, a second mounting seat is fixedly mounted on one side of one of the support legs close to the sliding rod, and an electric push rod is fixedly mounted on the top of the second mounting seat for driving the sliding rod to move, and is used to drive the clamping strip to be clamped between the rotating roller and the conveyor belt to prevent the conveyor belt from reversing;

[0010] The second driving mechanism is arranged on the second mounting seat and is used in conjunction with the electric push rod to manually drive the clamping strip to be clamped between the rotating roller and the conveyor belt after power failure;

[0011] The fixing assembly is arranged on the conveyor and is used in conjunction with the second driving mechanism to fix the box on the conveyor belt when the machine is stopped.

[0012] Furthermore, the second driving mechanism includes a cylinder body fixedly arranged on the top of the second mounting seat, the cylinder body being divided into a plurality of cavities, a piston rod slidingly provided through one side of the cylinder body, a piston head located in the plurality of cavities fixedly sleeved on the outer wall of the piston rod, a third spring sleeved on the outer wall of the piston rod, two ends of the third spring being respectively fixedly connected to one side of the piston head and one side inner wall of the cylinder body, a same connecting strip being fixedly arranged between one end of the piston rod and the sliding rod, a plug rod being fixedly arranged on one side of the connecting strip, one end of the plug rod being plugged into the output end of the electric push rod, corresponding sockets being provided on the output end of the electric push rod and the outer wall of the plug rod, a same pin being plugged into the two sockets, and a driving member being provided on the conveyor for releasing the fixation of the plug rod and the electric push rod.

[0013] Furthermore, the driving member includes two second guide rods fixedly arranged on one side of the supporting leg, the outer wall sliding sleeves of the two second guide rods are provided with the same sliding block, the same second fixed rod is fixedly arranged between the two sliding blocks on the same side, one end of the pin is connected to the corresponding second fixed rod, the outer wall sleeves of the second guide rods are provided with a fourth spring, the two ends of the fourth spring are respectively fixedly connected to the outer wall of one end of the second guide rod and one side of the sliding block, the fourth springs on both sides are in opposite positions, and a plurality of connecting frames are fixedly arranged between the two second fixed rods.

[0014] Furthermore, a rotating plate is rotatably provided on the inner side of the first mounting seat, one end of the rotating plate is tilted downward, a second connecting rod is fixedly provided between the two rotating plates, a pressure roller is sleeved on the outer wall of the second connecting rod, a fixed plate is fixedly provided on the inner side of the first mounting seat, the other end of the fixed plate is tilted upward and fixed with a first fixed rod, a roller is rotatably sleeved on the outer wall of the first fixed rod, and 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, and a push plate is slidingly sleeved on the outer wall of the first guide rod and the sliding rod, one side of the push plate is in contact with the second connecting rod, and the outer wall of the sliding rod is sleeved with a second spring located on one side of the push plate, and the two ends of the second spring are respectively fixedly connected to one side of the push plate and the outer wall of the sliding rod, and are used to drive the pressure roller to approach the two rollers to clamp the conveyor belt, and the outer wall of the sliding rod is sleeved with a first spring located between the fixed frame and the first mounting seat, and the two ends of the first spring are respectively fixedly connected to one side of the fixed frame and the outer wall of the sliding rod.

[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 end 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 fixed on the top of the conveyor bracket, a plurality of cylinders are fixedly provided through one side of the mounting plate, a same clamping plate is fixedly provided at the output ends of the plurality of cylinders, and 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 opened on one side of the clamping plate, a screw is rotatably arranged in the mounting hole, and the other end of the screw is threadedly connected to the output end of the cylinder to increase the moving distance of the clamping plate.

[0019] Furthermore, the pressure roller is mounted 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 provided on the sliding sleeve of the outer wall of the second fixing rod close to the pin, and one end of the pin is fixedly connected to the sliding ring.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention discloses an anti-reverse braking device for a belt conveyor. By arranging a first mounting seat, a sliding rod, a push bar and a clamp bar at the bottom of a conveyor support, and driving with an electric push rod, the clamp bar can be quickly clamped between a rotating roller and a conveyor belt when the conveyor stops, effectively preventing the conveyor belt from reversing and ensuring the safe operation of the conveyor. A first connecting rod is arranged at both ends of the push bar, a ratchet is fixedly sleeved on the outer wall of the rotating roller, and a ratchet is rotatably arranged at the top end of the first connecting rod. Through the cooperation of the ratchet and the ratchet, the rotating roller is further prevented from reversing, thereby enhancing the anti-reversal effect of the device.

[0023] 2. The anti-reverse braking device for a belt conveyor disclosed in the present invention is provided with a second driving mechanism, so that in an emergency such as power failure, the fixing of the plug rod and the electric push rod can be released by manually operating the driving member, and the clamping strip is manually driven to be clamped between the rotating roller and the conveyor belt by using the piston rod, the connecting strip and other structures, so as to realize the anti-reverse function, thereby improving the emergency handling capability of the device under special circumstances;

[0024] 3. The anti-reverse braking device for a belt conveyor disclosed in the present invention is used in conjunction with a second driving mechanism through a fixing assembly. When the conveyor stops, the air pressure in the cylinder changes to drive the cylinder, driving the clamping plate to fix the box on the conveyor belt, thereby preventing the goods from sliding or shifting due to the inertia of the conveyor belt or other factors during the stop process, thereby ensuring the safety of the goods;

[0025] 4. The anti-reverse braking device for a belt conveyor disclosed in the present invention is a structure in which a rotating plate, a second connecting rod, a pressure roller, a fixed plate, a first fixed rod and a roller are arranged on the inner side of a first mounting seat. The pressure roller is sleeved on the second connecting rod through a one-way bearing. When the conveyor belt is operating normally, the pressure roller can rotate with the movement of the conveyor belt to increase the friction with the conveyor belt and ensure the normal operation of the conveyor belt. When the conveyor belt has a reverse trend, the one-way bearing will prevent the pressure roller from rotating in the opposite direction to prevent the conveyor belt from reversing. When the sliding rod moves, the push plate pushes the second connecting rod to rotate, so that the pressure roller approaches the roller to clamp the conveyor belt, thereby increasing the stability of the conveyor belt during operation and further fixing the conveyor belt, which can effectively ensure that the conveyor belt will not move in the opposite direction.

[0026] The present invention drives the clamping strip to be clamped between the rotating roller and the conveyor belt by an electric push rod, thereby effectively preventing the conveyor belt from reversing; when the power is off, the anti-reversal function can be manually realized by the second driving mechanism; at the same time, the fixing component can fix the box on the conveyor belt when the machine is shut down to ensure the safety of the goods; in addition, the device is also provided 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, thereby improving the safety and reliability of the belt conveyor.

[0027] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

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

[0030] Figure 2 A schematic diagram of the three-dimensional structure of an anti-reverse braking device for a belt conveyor of the present invention from another perspective;

[0031] Figure 3 This is a schematic diagram of the installation position structure of a push bar of an anti-reverse braking device for a belt conveyor of the present invention;

[0032] Figure 4 for Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0033] Figure 5 for Figure 3 The enlarged structural diagram of the middle B part;

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

[0035] Figure 7 It is a schematic diagram of the cross-sectional structure of a cylinder body of an anti-reverse braking device for a belt conveyor of the present invention;

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

[0037] Fig. 9 The present invention is a schematic diagram of the structure of a driving frame of an anti-reverse braking device for a belt conveyor.

[0038] Figure numerals: 1, conveyor; 2, mounting plate; 3, clamping plate; 4, cylinder; 5, support leg; 6, first mounting seat; 7, fixed frame; 8, sliding rod; 9, first spring; 10, push bar; 11, clamping bar; 12, first connecting rod; 13, ratchet; 14, support block; 15, ratchet; 16, rotating plate; 17, second connecting rod; 18, pressure roller; 19, first guide rod; 20, push plate; 21, fixed plate; 22, first fixed rod; 23, roller; 24, second spring; 25, second mounting seat; 26, electric push rod; 27, cylinder body; 28, piston rod; 29, connecting strip; 30, plug rod; 31, socket; 32, pin; 33, cavity; 34, piston head; 35, third spring; 36, mounting hole; 37, screw; 38, second fixing rod; 39, connecting frame; 40, sliding block; 41, second guide rod; 42, fourth spring; 43, sliding ring. DETAILED DESCRIPTION

[0039] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways 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 only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0040] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0041] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0042] Embodiment 1

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

[0044] Two first mounting seats 6 are fixedly provided at the bottom of the bracket of the conveyor 1, and a fixing frame 7 located in the conveyor belt is fixedly provided at the bottom of the conveyor 1. A sliding rod 8 is slidably provided through one side of the first mounting seat 6, and the other end of the sliding rod 8 is slidably connected through the fixing 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. When the sliding rod 8 moves, the push bar 10 and the clamping bar 11 are driven to move, so that the clamping bar 11 can be pushed between the rotating roller and the conveyor belt. At this time, when the conveyor belt moves in the reverse direction, the clamping bar 11 can be used to block the conveyor belt and the rotating roller, so as to prevent the conveyor belt from moving in the reverse direction.

[0045] Multiple support legs 5 are fixedly mounted at the bottom of the support of the conveyor 1 to support the conveyor 1. A second mounting seat 25 is fixedly mounted on one side of one of the support legs 5 close to 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 seat 25. When the output end of the electric push rod 26 is extended or retracted, it will push the sliding rod 8 to move, thereby driving the clamping strip 11 to be stuck between the rotating roller and the conveyor belt to prevent the conveyor belt from reversing.

[0046] The second driving mechanism is arranged on the second mounting seat 25 and cooperates with the electric push rod 26. The second driving mechanism includes a cylinder body 27 fixedly arranged on the top of the second mounting seat 25, and a plurality of cavities 33 are divided in the cylinder body 27. A piston rod 28 is slidably provided through one side of the cylinder body 27, and a piston head 34 located in the plurality of 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, and the two ends of the third spring 35 are respectively fixedly connected to one side of the piston head 34 and one side inner wall of the cylinder body 27. A same connecting strip 29 is fixedly arranged between one end of the piston rod 28 and the sliding rod 8, and a plug rod 30 is fixedly arranged on one side of the connecting strip 29, and one end of the plug rod 30 is plugged into the output end of the electric push rod 26. Corresponding plug holes 31 are provided on the output end of the electric push rod 26 and the outer wall of the plug rod 30, and the same pin 32 is inserted into the two plug holes 31. When manual drive is required, the pin 32 is pulled out to release the fixation of the plug rod 30 and the electric push rod 26. At this time, the piston rod 28 can be reset and moved out under the action of the third spring 35. During the extension of the piston rod 28, the sliding rod 8 can be driven to move through the connecting strip 29, thereby driving the clamping strip 11 to be stuck between the rotating roller and the conveyor belt. When the obstruction of the conveyor belt and the rotating roller needs to be released, the electric push rod 26 needs to be started to extend so that the output end of the electric push rod 26 is connected to the plug rod 30, and the pin 32 is inserted into the two sockets 31. Finally, the electric push rod 26 is started to retract, which can drive the sliding rod 8 to reset and move, and use the connecting strip 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 provided with a driving member for releasing the fixing of the insertion rod 30 and the electric push rod 26. The driving member includes two second guide rods 41 fixedly arranged on one side of the support leg 5, the outer wall of the two second guide rods 41 is slidably sleeved with the same sliding block 40, the same second fixing rod 38 is fixedly arranged between the two sliding blocks 40 on the same side, and one end of the pin 32 is connected to the corresponding second fixing rod 38. The outer wall of the second guide rod 41 is sleeved with a fourth spring 42, and the two ends of the fourth spring 42 are respectively fixedly connected to the outer wall of one end of the second guide rod 41 and one side of the sliding block 40, the fourth springs 42 on both sides are in opposite positions, and a plurality of connecting frames 39 are fixedly arranged between the two second fixing rods 38. When it is necessary to release the fixing, it is only necessary to push the second fixing rod 38 on one side so that it can drive the sliding block 40 to slide on the second guide rod 41, compress and stretch the corresponding fourth spring 42, and pull the pin 32 out of the insertion hole 31. A sliding ring 43 is provided on the outer wall sliding sleeve of the second fixed rod 38 near the pin 32, and 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 fixed rod 38 is released, the sliding block 40 can reset and move under the action of the fourth spring 42.

[0048] The fixing assembly includes two mounting plates 2 fixed on the top of the bracket of the conveyor 1. A plurality of cylinders 4 are fixedly provided on one side of the mounting plate 2. The output ends of the plurality of cylinders 4 are fixedly provided with the same clamping plate 3. The air inlet end of the cylinder 4 is connected with the corresponding cavity 33 through a pipeline. At the same time, a certain amount of gas is filled in the cavity 33. When the piston rod 28 drives the piston head 34 to move in the cavity 33, the gas in the cylinder body 27 can be squeezed, so that the gas enters the cylinder 4 through the pipeline, and the output end of the cylinder 4 is driven to extend, thereby driving the clamping plates 3 on both sides to move relative to each other, and clamping and fixing the box on the conveyor belt. A mounting hole 36 corresponding to the cylinder 4 is opened on one side of the clamping plate 3. A screw 37 is rotatably provided in the mounting hole 36. The other end of the screw 37 is threadedly connected 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 adapt to boxes of different sizes. When the piston rod 28 is reset, the gas in the cylinder 4 can be extracted, so that the gas enters the cavity 33 again.

[0049] Embodiment 2

[0050] Reference Figure 1-Figure 9 The present invention provides a new technical solution, an anti-reverse braking device for a belt conveyor, comprising a rotating plate 16 rotatably arranged inside a first mounting seat 6, one end of the rotating plate 16 tilts downward, a second connecting rod 17 is fixedly arranged between the two rotating plates 16, and a pressure roller 18 is sleeved on the outer wall of the second connecting rod 17. A fixed plate 21 is fixedly arranged inside the first mounting seat 6, the other end of the fixed plate 21 tilts upward and is fixedly arranged with a first fixed rod 22, a roller 23 is rotatably sleeved on the outer wall of the first fixed rod 22, and 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 arranged on one side of one of the first mounting seats 6, a push plate 20 is slidably sleeved on the outer wall of the first guide rod 19 and the sliding rod 8, one side of the push plate 20 contacts the second connecting rod 17, and the outer wall of the sliding rod 8 is sleeved with a second spring 24 located on one side of the push plate 20, and the two ends of the second spring 24 are respectively fixedly connected to one side of the push plate 20 and the outer wall of the sliding rod 8. 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, the second connecting rod 17 is pushed to rotate, so that the pressure roller 18 approaches the two rollers 23 to clamp the conveyor belt. The outer wall of the sliding rod 8 is sleeved with a first spring 9 located between the fixing frame 7 and the first mounting seat 6. The two ends of the first spring 9 are fixedly connected to one side of the fixing frame 7 and the outer wall of the sliding rod 8 respectively. The first spring 9 can play a role of buffering and resetting.

[0051] Both ends of the push bar 10 are fixed with a first connecting rod 12, the outer wall of the rotating roller of the conveyor 1 is fixed with a ratchet 15, the top of the first connecting rod 12 is rotatably provided with a ratchet 13, and the outer side of the conveyor 1 is fixed with a support block 14 for supporting the ratchet 13. When the push bar 10 moves, it can drive the ratchet 13 to approach the ratchet 15, so that the ratchet 13 cooperates with the ratchet 15 to prevent the rotating roller from reversing. At the same time, during the resetting process, the ratchet 13 is away from the ratchet 15 to avoid wear caused by long-term contact.

[0052] The pressure roller 18 is mounted on the second connecting rod 17 through a one-way bearing. When the conveyor belt is operating 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 is started to extend. During the extension process, the electric push rod 26 can drive the connecting bar 29 to move through the insertion rod 30, and 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 be used to push the push plate 20 to move. During the movement of the push plate 20, the second connecting rod 17 can be driven to move downward, so that the pressure roller 18 cooperates with the roller 23 to 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 driven to move between the conveyor roller and the conveyor belt. In this way, the conveyor roller and the conveyor belt can be blocked by the clamping bar 11 during the reversal process.

[0054] The push bar 10 can also drive the first connecting rod 12 to move during the movement, and the movement of the first connecting rod 12 can drive the pawl 13 to approach the ratchet 15. When the pawl 13 contacts the ratchet 15, the inclined surface on the outer side of the ratchet 15 can cooperate with the pawl 13 to flip upward until the pawl 13 contacts the ratchet 15, and the ratchet 15 will not reverse at this time.

[0055] The connecting strip 29 can drive the piston rod 28 to move during the outward movement, and the movement of the piston rod 28 can drive the piston head 34 to move. During the movement of the piston head 34, the gas in the cavity 33 can be squeezed out, so that the gas can enter the cylinder 4 through the pipeline. After entering, the output end of the cylinder 4 will extend out, 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 are close to each other to 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 push rod 26 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selection according to their needs or convenience.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. An anti-reverse braking device for a belt conveyor, characterized in that: The conveyor (1) comprises two first mounting seats (6) fixedly provided at the bottom of a bracket of the conveyor (1), a fixed frame (7) located inside the conveyor belt fixedly provided at the bottom of the conveyor (1), a sliding rod (8) slidingly provided through one side of the first mounting seat (6), the other end of the sliding rod (8) slidingly connected to the fixed frame (7), a push bar (10) 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 fixedly provided on one side of the push bar (10); A plurality of support legs (5), each of which is fixedly arranged at the bottom of a support of a conveyor (1) and used to support the conveyor (1); a second mounting seat (25) is fixedly arranged on one side of one of the support legs (5) close to the sliding rod (8); an electric push rod (26) for driving the sliding rod (8) to move is fixedly arranged on the top of the second mounting seat (25) and is used to drive the clamping strip (11) to be clamped between the rotating roller and the conveyor belt to prevent the conveyor belt from reversing; A second driving mechanism is arranged on the second mounting seat (25) and is used in conjunction with the electric push rod (26) to manually drive the clamping strip (11) to be clamped between the rotating roller and the conveyor belt after power failure; The fixing assembly is arranged on the conveyor (1) and is used in conjunction with the second driving mechanism to fix the box on the conveyor belt when the machine is stopped.

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

3. The anti-reverse braking device for a belt conveyor according to claim 2, characterized in that: The driving member comprises two second guide rods (41) fixedly arranged on one side of the supporting leg (5); the outer walls of the two second guide rods (41) are slidably sleeved with a same sliding block (40); a same second fixed rod (38) is fixedly arranged between the two sliding blocks (40) on the same side; one end of the pin (32) is connected to the corresponding second fixed rod (38); the outer wall of the second guide rod (41) is sleeved with a fourth spring (42); the two ends of the fourth spring (42) are respectively fixedly connected to the outer wall of one end of the second guide rod (41) and one side of the sliding block (40); the fourth springs (42) on both sides are in opposite positions; and a plurality of connecting frames (39) are fixedly arranged between the two second fixed 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 seat (6), one end of the rotating plate (16) is tilted downward, a second connecting rod (17) is fixedly provided between the two rotating plates (16), the outer wall of the second connecting rod (17) is sleeved with a pressure roller (18), a fixed plate (21) is fixedly provided on the inner side of the first mounting seat (6), the other end of the fixed plate (21) is tilted upward and fixedly provided with a first fixed rod (22), a roller (23) is rotatably sleeved on the outer wall of the first fixed rod (22), and 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: A first guide rod (19) is fixedly provided on one side of one of the first mounting seats (6); a push plate (20) is slidingly sleeved on the outer wall of the first guide rod (19) and the sliding rod (8); one side of the push plate (20) contacts the second connecting rod (17); the outer wall of the sliding rod (8) is sleeved with a second spring (24) located on one side of the push plate (20); two ends of the second spring (24) are respectively fixedly connected to one side of the push plate (20) and the outer wall of the sliding rod (8) 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 sleeved with a first spring (9) located between the fixed frame (7) and the first mounting seat (6); two ends of the first spring (9) are respectively fixedly connected to one side of the fixed frame (7) and the outer wall of the sliding rod (8).

6. The anti-reverse braking device for a belt conveyor according to claim 5, characterized in that: A first connecting rod (12) is fixedly provided at both ends of the push bar (10), 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 end of the first connecting rod (12), and a support block (14) for supporting the pawl (13) is fixedly provided on the outer side of the conveyor (1).

7. The anti-reverse braking device for a belt conveyor according to claim 2, characterized in that: The fixing assembly comprises two mounting plates (2) fixedly mounted on the top of a support of a conveyor (1); a plurality of cylinders (4) are fixedly mounted through one side of the mounting plate (2); the output ends of the plurality of cylinders (4) are fixedly mounted with a same clamping plate (3); and the air inlet ends of the cylinders (4) are connected to corresponding cavities (33) via pipelines.

8. The anti-reverse braking device for a belt conveyor according to claim 7, characterized in that: A mounting hole (36) corresponding to the cylinder (4) is provided on one side of the clamping plate (3), a screw rod (37) is rotatably arranged in the mounting hole (36), and the other end of the screw rod (37) is threadedly connected 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) via a one-way bearing, and is used to increase the friction force 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 provided on the outer wall of the second fixing rod (38) close to the pin (32), and one end of the pin (32) is fixedly connected to the sliding ring (43).

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