An electro-hydraulic push brake locking device for a belt conveyor

Abstract

The present invention belongs to the technical field of electro-hydraulic push-type brake locking for belt conveyors, and specifically relates to an electro-hydraulic push-type brake locking device for belt conveyors, which includes a brake device. The brake device includes a stop piece for quickly stopping the rotation of the belt conveyor shaft. An electro-hydraulic push rod device is arranged on one side of the brake device, and the electro-hydraulic push rod device includes a piston rod for preventing the stop piece in the brake device from stopping the belt conveyor shaft. By starting the electro-hydraulic push rod device, the piston rod on the electro-hydraulic push rod device drives the displacement block one to move upward synchronously, causing the counterweight to descend and be adsorbed by the energized and demagnetized electromagnet. At this time, the electro-hydraulic push rod device is turned off, and the piston rod remains stationary when the counterweight is adsorbed and fixed by the energized and demagnetized electromagnet, thereby limiting the piston rod. This avoids the problem in the prior art that the electro-hydraulic push rod device needs to run for a long time to keep the piston rod at the same displacement length, prolongs the service life of the electro-hydraulic push rod device, reduces the power consumption, and thus reduces the cost.

Description

Technical Field

[0001] The invention belongs to the technical field of belt conveyor electro-hydraulic driven brake locking, in particular to a belt conveyor electro-hydraulic driven brake locking device. Background Art

[0002] The belt conveyor electro-hydraulic brake locking device is a braking device, which is used to quickly stop the rotating shaft on the belt conveyor when the belt conveyor stops, so that the rotating shaft no longer rotates.

[0003] The existing belt conveyor electro-hydraulic push brake locking device consists of an electro-hydraulic push rod device and a brake device. Before the belt conveyor is started, the stop piece on the brake device is first fitted with the belt conveyor shaft to make them tightly contact. Then the electro-hydraulic push rod device is started, and the piston rod thereon is extended to drive the stop piece on the brake device no longer to contact with the belt conveyor shaft. At this time, the belt conveyor is started and the shaft thereon operates normally; when the belt conveyor stops, the electro-hydraulic push rod device is closed, and the piston rod thereon is reset to drive the stop piece on the brake device to reset. At this time, the stop piece fits and rubs against the belt conveyor shaft, so that the belt conveyor shaft stops rotating under the action of friction and is clamped by the stop piece.

[0004] The existing belt conveyor electro-hydraulic push brake locking device still has some problems in actual use. During the operation of the belt conveyor, the electro-hydraulic push rod device needs to be powered continuously to keep the piston rod thereon at the same extension length, so as to ensure that the stop piece on the brake device does not conflict with the belt conveyor shaft and the belt conveyor operates normally. However, the piston rod maintains the same extension length for a long time, causing the electro-hydraulic push rod device to be in long-term high-load operation, resulting in a shortened service life of the electro-hydraulic push rod device. At the same time, long-term high-load operation causes the extension length of the piston rod in the electro-hydraulic push rod device to gradually decrease, causing the stop piece on the brake device to contact the belt conveyor shaft. The friction of the rotating shaft reduces the transmission efficiency of the belt conveyor. In more serious cases, it causes the brake to lock automatically, preventing the belt conveyor from operating normally. In addition, during use, the added limit assembly will cause the counterweight on it to swing when it descends. During the swinging process, one side of the counterweight will be close to the energized demagnetizing electromagnet below it, and one side of the counterweight will be adsorbed together with the energized demagnetizing electromagnet, causing the piston rod of the electro-hydraulic push rod device to shift when the power is off, further causing the stop plate on the brake device to abut against the rotating shaft on the belt conveyor, thereby aggravating the wear of the rotating shaft and possibly causing damage to the belt conveyor.

[0005] To this end, the present invention provides a belt conveyor electro-hydraulic driven brake locking device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: An electro-hydraulic push-type brake locking device for a belt conveyor of the present invention includes a brake device. The brake device includes a stop piece for quickly stopping the rotation of the belt conveyor shaft. An electro-hydraulic push rod device is arranged on one side of the brake device. The electro-hydraulic push rod device includes a piston rod for preventing the stop piece in the brake device from stopping the belt conveyor shaft.

[0008] A limit component is arranged on one side of the electro-hydraulic push rod device. The limit component is used to keep the piston rod in the same position.

[0009] A centering component is arranged on the limit component. The centering component is used to further stably limit the piston rod.

[0010] Preferably, the limit component includes a fixed bracket. A fixed column is fixedly connected to the inner top surface of the fixed bracket. A first fixed sleeve is fixedly connected to the middle of the inner top surface of the fixed bracket. A first runner is rotatably connected in the first fixed sleeve. The first fixed sleeve and the first runner form a fixed pulley. One end of the fixed column is fixedly connected to a displacement rope. The displacement rope passes through the first runner. A second fixed sleeve is arranged on the brake device. A second runner is rotatably connected in the second fixed sleeve. The second fixed sleeve and the second runner form a movable pulley. The movable pulley is located on the displacement rope between the fixed bracket and the fixed pulley. A first hanging rope is fixedly connected to the bottom end of the second fixed sleeve. The output end of the piston rod in the electro-hydraulic push rod device is fixedly connected to a first displacement block. The bottom of the first hanging rope penetrates through the first displacement block and is sleeved with the first displacement block. The other end of the displacement rope is fixedly connected to a second hanging rope. A counterweight is arranged in the brake device. The counterweight is made of iron material. A second displacement block is fixedly connected to the middle of the top end of the counterweight. The bottom of the second hanging rope penetrates through the second displacement block and is sleeved with the second displacement block.

[0011] Preferably, the electro-hydraulic push rod device is located in the fixed bracket. The piston rod in the electro-hydraulic push rod device is located between the fixed pulley and the fixed column and is in the same vertical plane.

[0012] Preferably, the limit component further includes a threaded groove. The threaded groove is opened on the inner bottom of the brake device. A threaded rod is threadedly connected in the threaded groove. A gasket is fixedly connected to the top of the threaded rod. An energized demagnetizing electromagnet is fixedly connected to the top of the gasket. An interface protection shell is fixedly connected to the outer surface of the energized demagnetizing electromagnet. A wire is fixedly connected to one side of the interface protection shell.

[0013] Preferably, the shape of the gasket matches the shape of the energized demagnetizing electromagnet. The counterweight and the energized demagnetizing electromagnet are on the same vertical axis.

[0014] Preferably, the centering assembly includes a base fixedly connected to the bottom of the fixed bracket. A rotation groove is formed in the top of the base, and a sliding groove is formed in the top end of the base. The rotation groove communicates with the sliding groove. A rack is slidably connected inside the sliding groove.

[0015] Preferably, the base is located on the movement track of the counterweight.

[0016] Preferably, one side of the rack is attached to the inner wall of one side of the fixed bracket.

[0017] Preferably, the centering assembly further includes a rotating rod rotatably connected in the sliding groove. A rotating gear is fixedly connected to the surface of the top end of the rotating rod. The rotating rod meshes with the rack. A belt loop is fixedly connected to the surface of the bottom end of the rotating rod. A transmission belt is drivingly connected to the inner surface of the belt loop. A motor is fixedly connected to the bottom of the base, and the output end of the motor is fixed to the bottom end of the rotating rod.

[0018] Preferably, the base is located on the movement track of the energized demagnetizing electromagnet, and the energized demagnetizing electromagnet is located inside the quadrilateral formed by the transmission belt.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. Through the cooperation of the limiting assembly and the centering assembly, the present invention ensures that the piston rod on the electro-hydraulic push rod device maintains a stable extension height during the operation of the belt conveyor, preventing the problem that the transmission efficiency of the belt conveyor is reduced due to the unstable extension height of the piston rod, and further preventing the problem of stopping operation, and ensuring the stability of the electro-hydraulic push brake locking device of the belt conveyor during the operation of the belt conveyor.

[0021] 2. By starting the electro-hydraulic push rod device, the piston rod on the electro-hydraulic push rod device drives the displacement block one to move upward synchronously, causing the counterweight to descend and be adsorbed by the energized demagnetizing electromagnet. At this time, the electro-hydraulic push rod device is turned off, and the piston rod remains stationary when the counterweight is adsorbed and fixed by the energized demagnetizing electromagnet, thereby limiting the piston rod. This avoids the problem in the prior art that the electro-hydraulic push rod device needs to operate for a long time to keep the piston rod at the same displacement length, extends the service life of the electro-hydraulic push rod device, reduces the power consumption, and further reduces the cost.

[0022] 3. Through the synchronous displacement of the four racks, the present invention further centers and resists the counterweight, preventing the counterweight from swaying during the descent, and preventing one side of the counterweight from being adsorbed by the energized and demagnetized electromagnet, resulting in displacement of the piston rod thereon after the electro-hydraulic push rod device is closed, causing the stop piece on the brake device to contact and rub against the belt conveyor shaft, ensuring the service life of the belt conveyor shaft, and at the same time avoiding the problem that after the energized and demagnetized electromagnet is energized and demagnetized, the counterweight moves upward and swings under the action of inertia, thereby colliding with the equipment in its vicinity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 It is a front elevation schematic diagram of the overall device of the present invention;

[0025] Figure 2 It is a right view schematic diagram of the overall device of the present invention;

[0026] Figure 3 It is a schematic diagram of the positional relationship between the base and the rack of the present invention;

[0027] Figure 4 It is a schematic diagram of the positional relationship between the counterweight and the energized and demagnetized electromagnet of the present invention;

[0028] Figure 5 For the present invention Figure 4 Enlarged schematic diagram at position A;

[0029] Figure 6 It is a schematic diagram of the positional relationship between the gasket and the energized and demagnetized electromagnet of the present invention;

[0030] Figure 7 It is a partial structural schematic diagram of the centering assembly of the present invention;

[0031] Figure 8 It is a schematic diagram of the positional relationship between the belt loop and the transmission belt of the present invention;

[0032] Figure 9 It is a schematic diagram of the positional relationship between the rack and the rotating gear of the present invention;

[0033] Figure 10 It is a schematic diagram of the positional relationship between the rotating rod and the rotating gear of the present invention.

[0034] Reference numerals: 1. Brake device; 11. Electro-hydraulic push rod device;

[0035] 21. Fixed bracket; 22. Fixed column; 23. First fixed sleeve; 24. First runner; 25. Displacement rope; 26. Second fixed sleeve; 27. Second runner; 28. First hanging rope; 29. First displacement block; 210. Second hanging rope; 211. Second displacement block; 212. Counterweight; 213. Threaded groove; 214. Threaded rod; 215. Gasket; 216. Electrified demagnetizing electromagnet; 217. Interface protective shell; 218. Electric wire;

[0036] 31. Base; 32. Rotating groove; 33. Sliding groove; 34. Rack; 35. Rotating rod; 36. Rotating gear; 37. Belt loop; 38. Transmission belt; 39. Motor. Detailed implementation mode

[0037] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the present invention will be further described below in conjunction with the specific implementation modes.

[0038] Embodiment 1

[0039] As Figures 1 to 10 shown, a belt conveyor electro-hydraulic push brake locking device according to an embodiment of the present invention includes a brake device 1. The brake device 1 includes a stop piece for quickly stopping the rotation of the belt conveyor shaft. An electro-hydraulic push rod device 11 is arranged on one side of the brake device 1. The electro-hydraulic push rod device 11 includes a piston rod for preventing the stop piece in the brake device 1 from stopping the belt conveyor shaft;

[0040] A limit component is arranged on one side of the electro-hydraulic push rod device 11. The limit component is used to keep the piston rod in the same position;

[0041] A centering component is arranged on the limit component. The centering component is used to further stabilize the limit of the piston rod.

[0042] Specifically, there are still some problems with the existing electro-hydraulic push brake locking device of the belt conveyor during actual use. During the operation of the belt conveyor, the electro-hydraulic push rod device 11 needs to be continuously powered to keep the piston rod thereon at the same extended length, so as to ensure that the stop piece on the brake device 1 does not contact the rotating shaft of the belt conveyor and enable the belt conveyor to operate normally. However, the piston rod remains at the same extended length for a long time, causing the electro-hydraulic push rod device 11 to be in a high-load operation for a long time, resulting in a shortened service life of the electro-hydraulic push rod device 11. At the same time, the long-term high-load operation causes the extended length of the piston rod in the electro-hydraulic push rod device 11 to decrease, making the stop piece on the brake device 1 contact and rub against the rotating shaft of the belt conveyor, reducing the transmission efficiency of the belt conveyor. In more serious cases, it causes the brake to automatically lock, resulting in the belt conveyor being unable to operate normally; in addition, for the added limit component, during use, the counterweight 212 thereon will swing when descending. During the swinging process, one side of the counterweight 212 approaches the energized demagnetizing electromagnet 216 below it, and there will be a situation where one side of the counterweight 212 is adsorbed to the energized demagnetizing electromagnet 216. When the electro-hydraulic push rod device 11 is de-energized, the piston rod thereon will displace, causing the stop piece on the brake device 1 to contact and rub against the rotating shaft of the belt conveyor, reducing the transmission efficiency of the belt conveyor.

[0043] Therefore, the present invention solves this problem by setting corresponding structures. Before the belt conveyor starts, first make the stop piece on the brake device 1 fit with the rotating shaft of the belt conveyor so that they are in close contact. Then start the electro-hydraulic push rod device 11. The extension of the piston rod thereon drives the stop piece on the brake device 1 to no longer contact the rotating shaft of the belt conveyor. Then, the piston rod is limited by the limit component, and through the centering component, after keeping this extended height, the electro-hydraulic push rod device 11 is closed. At this time, start the belt conveyor, and its rotating shaft operates normally; when the belt conveyor stops, at this time, the piston rod is reset by the limit component, driving the stop piece on the brake device 1 to reset. At this time, the stop piece fits and rubs against the rotating shaft of the belt conveyor, so that the rotating shaft of the belt conveyor stops rotating under the action of friction and is clamped by the stop piece.

[0044] Through the cooperation of the limit component and the centering component, the present invention ensures that the piston rod on the electro-hydraulic push rod device 11 maintains a stable extended height during the operation of the belt conveyor, preventing the reduction of the transmission efficiency of the belt conveyor caused by the unstable extended height of the piston rod and further preventing the problem of stopping operation, and ensuring the stability of the electro-hydraulic push brake locking device of the belt conveyor during the operation of the belt conveyor.

[0045] Such as Figure 1 And Figure 2As shown, the limiting assembly of this embodiment includes a fixed bracket 21, a fixed column 22 is fixedly connected to the top surface of the fixed bracket 21, a fixed sleeve 23 is fixedly connected to the middle of the top surface of the fixed bracket 21, a rotating wheel 24 is rotatably connected in the fixed sleeve 23, and the fixed sleeve 23 and the rotating wheel 24 form a fixed pulley, a displacement rope 25 is fixedly connected to one end of the fixed column 22, and the displacement rope 25 passes through the rotating wheel 24, a fixed sleeve 26 is provided on the brake device 1, a rotating wheel 27 is rotatably connected in the fixed sleeve 26, and the fixed sleeve 26 and the rotating wheel 27 form a movable pulley, and the movable pulley The wheel is located on the displacement rope 25 between the fixed bracket 21 and the fixed pulley, the bottom end of the fixed sleeve 26 is fixedly connected to the hanging rope 28, the output end of the piston rod in the electro-hydraulic push rod device 11 is fixedly connected to the displacement block 29, the bottom of the hanging rope 28 passes through the displacement block 29 and is sleeved with the displacement block 29, the other end of the displacement rope 25 is fixedly connected to the hanging rope 210, a counterweight 212 is provided in the brake device 1, the counterweight 212 is made of iron material, the middle part of the top of the counterweight 212 is fixedly connected to the displacement block 211, the bottom of the hanging rope 210 passes through the displacement block 211 and is sleeved with the displacement block 211.

[0046] Specifically, before the belt conveyor is operated, the piston rod output end of the electro-hydraulic push rod device 11 is located at the top of the electro-hydraulic push rod device 11. When the belt conveyor is ready to be started, the piston rod on the electro-hydraulic push rod device 11 is displaced upward by operating the electro-hydraulic push rod device 11, thereby driving the displacement block 1 29 to move upward synchronously. Under the combined action of the weight of the counterweight 212 and the fixed pulley and the movable pulley, the displacement block 1 29 moves upward, and the length of the displacement rope 25 between the fixed pulley and the fixed column 22 is shortened, so that the length of the displacement rope 25 at the end where the counterweight 212 is located increases, so that the displacement block 2 211 moves downward;

[0047] When the electro-hydraulic push rod device 11 is closed, the piston rod on the electro-hydraulic push rod device 11 is reset, and the counterweight 212 is moved upward through the above operation. When the piston rod is reset, the stop plate on the brake device 1 contacts and rubs against the belt conveyor shaft, causing the belt conveyor to stop running.

[0048] like Figure 1 and Figure 2 As shown, the electro-hydraulic push rod device 11 of this embodiment is located in the fixed bracket 21, and the piston rod in the electro-hydraulic push rod device 11 is located between the fixed pulley and the fixed column 22 and is in the same vertical plane.

[0049] Specifically, the function of the arrangement here is to ensure that the movable pulley can pull the displacement block 29 so that the piston rod is limited after the electro-hydraulic push rod device 11 is closed.

[0050] like Figures 1 to 6As shown in the figure, the limiting component in this embodiment further includes a threaded groove 213, which is opened at the inner bottom of the brake device 1. A threaded rod 214 is threadedly connected in the threaded groove 213. A gasket 215 is fixedly connected to the top of the threaded rod 214, and an energized demagnetizing electromagnet 216 is fixedly connected to the top of the gasket 215. In this embodiment, the shape of the gasket 215 matches the shape of the energized demagnetizing electromagnet 216. The counterweight 212 and the energized demagnetizing electromagnet 216 are on the same vertical axis. An interface protection shell 217 is fixedly connected to the outer surface of the energized demagnetizing electromagnet 216, and a wire 218 is fixedly connected to one side of the interface protection shell 217.

[0051] Specifically, the energized demagnetizing electromagnet 216 has magnetism when not energized. Since the counterweight 212 and the energized demagnetizing electromagnet 216 are on the same vertical axis, when the counterweight 212 descends, the counterweight 212 gradually moves towards the direction close to the energized demagnetizing electromagnet 216 until the counterweight 212 contacts the energized demagnetizing electromagnet 216.

[0052] When the electro-hydraulic push rod device 11 is closed, at this time the counterweight 212 moves upward. Because the energized demagnetizing electromagnet 216 adsorbs the counterweight 212, the counterweight 212 remains stationary.

[0053] When the energized demagnetizing electromagnet 216 is energized through the wire 218, at this time the energized demagnetizing electromagnet 216 demagnetizes, and at this time the energized demagnetizing electromagnet 216 no longer adsorbs and fixes the counterweight 212, so that after the electro-hydraulic push rod device 11 is closed, the counterweight 212 moves upward.

[0054] By rotating the energized demagnetizing electromagnet 216, the threaded rod 214 is driven to rotate together, thereby adjusting the height of the energized demagnetizing electromagnet 216. Through the change of the height of the energized demagnetizing electromagnet 216, the distance between the counterweight 212 and the energized demagnetizing electromagnet 216 changes, so as to achieve the effect of adjusting the distance between the stop piece on the brake device 1 and the belt conveyor shaft.

[0055] In the present invention, by starting the electro-hydraulic push rod device 11, the piston rod on the electro-hydraulic push rod device 11 drives the displacement block one 29 to move upward synchronously, so that the counterweight 212 descends and is adsorbed by the energized demagnetizing electromagnet 216. At this time, the electro-hydraulic push rod device 11 is closed, and the piston rod remains stationary when the counterweight 212 is adsorbed and fixed by the energized demagnetizing electromagnet 216, thereby limiting the piston rod, avoiding the problem in the prior art that the electro-hydraulic push rod device 11 needs to run for a long time to keep the piston rod at the same displacement length, prolonging the service life of the electro-hydraulic push rod device 11, reducing the power consumption, and thus reducing the cost.

[0056] Embodiment Two

[0057] AsFigures 2 to 10 As shown in the figure, compared with the first comparative example, another implementation manner of the present invention is as follows:

[0058] As Figures 2 to 10 shown, the centering assembly in this embodiment includes a base 31, the base 31 is fixedly connected to the bottom of the fixed bracket 21, the base 31 is located on the movement track of the counterweight 212, a rotating groove 32 is opened at the top of the base 31, a sliding groove 33 is opened at the top end of the base 31, the rotating groove 32 communicates with the sliding groove 33, a rack 34 is slidably connected inside the sliding groove 33, and one side of the rack 34 is in contact with the inner wall of one side of the fixed bracket 21.

[0059] Specifically, when the counterweight 212 is at the position farthest from the energized demagnetizing electromagnet 216, the top end of the counterweight 212 and the top end of the rack 34 are in the same horizontal plane. There are four racks 34 on the base 31 and they are arranged in a circumferential array. All the structures on the centering assembly do not contact the counterweight 212 located in the middle thereof.

[0060] Since the base 31 is located on the movement track of the counterweight 212, the rack 34 slides towards the direction close to the middle of the base 31 until it stops sliding when it contacts the displaced counterweight 212, preventing the counterweight 212 from shaking during the displacement process, and at the same time centering the counterweight 212 so that the axis of the counterweight 212 is on the same vertical line when it is adsorbed by the energized demagnetizing electromagnet 216.

[0061] As Figures 2 to 10 shown, the centering assembly in this embodiment further includes a rotating rod 35, the rotating rod 35 is rotatably connected in the sliding groove 33, a rotating gear 36 is fixedly connected to the surface of the top end of the rotating rod 35, the rotating rod 35 meshes with the rack 34, a belt loop 37 is fixedly connected to the surface of the bottom end of the rotating rod 35, a transmission belt 38 is drivingly connected to the inner surface of the belt loop 37, and a motor 39 is fixedly connected to the bottom of the base 31, and the output end of the motor 39 is fixed to the bottom end of the rotating rod 35.

[0062] Specifically, there are four rotating rods 35, rotating gears 36 and belt loops 37 and they are arranged in a circumferential array. The transmission belt 38 is driven on the four belt loops 37. One rotating rod 35 is externally connected with a motor 39. By starting the motor 39, the output shaft thereof drives the rotating rod 35 fixed thereto to rotate. Then, while driving the rack 34 to displace through the rotating gear 36, the remaining rotating rods 35 are driven to rotate through the transmission of the transmission belt 38, so that the rack 34 displaces synchronously.

[0063] Through the synchronous displacement of the four racks 34, the counterweight 212 is centered and resisted, preventing the counterweight 212 from swaying during the descent, and enabling one side of it to be adsorbed by the energized demagnetizing electromagnet 216, resulting in the displacement of the piston rod on it after the electro-hydraulic push rod device 11 is closed, causing the stop piece on the brake device 1 to contact and rub against the belt conveyor rotating shaft, ensuring the service life of the belt conveyor rotating shaft. At the same time, it also avoids the problem that after the energized demagnetizing electromagnet 216 is energized and demagnetized, the counterweight 212 moves upward and swings under the action of inertia, and then collides with the equipment in its vicinity.

[0064] As Figure 3 , Figure 4 and Figure 8 shown, the base 31 of this embodiment is located on the movement trajectory of the energized demagnetizing electromagnet 216, and the energized demagnetizing electromagnet 216 is located inside the quadrilateral formed by the transmission belt 38.

[0065] Specifically, the purpose of this setting is that when adjusting the height of the energized demagnetizing electromagnet 216, the centering component will not block the energized demagnetizing electromagnet 216.

[0066] Working principle:

[0067] Before the belt conveyor starts, first make the stop piece on the brake device 1 fit with the belt conveyor rotating shaft so that they are in close contact. Then start the electro-hydraulic push rod device 11, and drive the stop piece on the brake device 1 through the extension of the piston rod on it to no longer contact the belt conveyor rotating shaft.

[0068] At this time, the output end of the piston rod on the electro-hydraulic push rod device 11 is located at the top of the electro-hydraulic push rod device 11. When preparing to start the belt conveyor, by operating the electro-hydraulic push rod device 11, the piston rod on it is displaced upward, thereby driving the displacement block one 29 to move upward synchronously. Under the combined action of the self-gravity of the counterweight 212 and the fixed pulley and the movable pulley, through the upward displacement of the displacement block one 29, the length of the displacement rope 25 between the fixed pulley and the fixed column 22 is shortened, and the length of the displacement rope 25 at the end where the counterweight 212 is located is increased, causing the displacement block two 211 to move downward, so that the counterweight 212 gradually moves towards the direction close to the energized demagnetizing electromagnet 216 until the counterweight 212 contacts the energized demagnetizing electromagnet 216;

[0069] During this process, by starting the motor 39, the output shaft on it drives the rotating rod 35 fixed to it to rotate, and then drives the rack 34 to displace through the rotating gear 36. At the same time, through the transmission of the transmission belt 38, the remaining rotating rods 35 rotate, so that the racks 34 are displaced synchronously until they stop sliding when contacting the displaced counterweight 212, preventing the counterweight 212 from swaying during the displacement process, and at the same time centering the counterweight 212 so that the axis of the counterweight 212 is on the same vertical line when it is adsorbed by the energized demagnetizing electromagnet 216;

[0070] At this time, the electro-hydraulic push rod device 11 is turned off, and the piston rod on the electro-hydraulic push rod device 11 is ready to reset. Since the energized demagnetizing electromagnet 216 adsorbs the counterweight 212, the counterweight 212 remains stationary, and thus the piston rod remains stationary;

[0071] At this time, the belt conveyor is started, and the rotating shaft on it runs normally;

[0072] When the belt conveyor stops, the energized demagnetizing electromagnet 216 is energized through the wire 218. At this time, the energized demagnetizing electromagnet 216 is demagnetized. At this time, the energized demagnetizing electromagnet 216 no longer adsorbs and fixes the counterweight 212, and the piston rod on the electro-hydraulic push rod device 11 resets. Through the above operations, the counterweight 212 resets. At this time, due to the reset of the piston rod, the stop piece on the brake device 1 is in contact with and rubs against the belt conveyor rotating shaft, so that the belt conveyor rotating shaft stops rotating under the action of friction and is clamped by the stop piece;

[0073] By rotating the energized demagnetizing electromagnet 216, the threaded rod 214 is driven to rotate together, thereby adjusting the height of the energized demagnetizing electromagnet 216. Through the change in the height of the energized demagnetizing electromagnet 216, the distance between the counterweight 212 and the energized demagnetizing electromagnet 216 changes, achieving the effect of adjusting the distance between the stop piece on the brake device 1 and the belt conveyor rotating shaft.

[0074] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An electro-hydraulic push-type brake locking device for a belt conveyor, characterized in that, It includes a brake device (1). Inside the brake device (1), there is a stopping piece for quickly stopping the rotation of the belt conveyor shaft. On one side of the brake device (1), there is an electro-hydraulic push rod device (11). Inside the electro-hydraulic push rod device (11), there is a piston rod for preventing the stopping piece inside the brake device (1) from stopping the belt conveyor shaft. On one side of the electro-hydraulic push rod device (11), there is a limit component for keeping the piston rod in the same position. On the limit component, there is a centering component for further stabilizing the limit of the piston rod. The limit component includes a fixed bracket (21). On the inner top surface of the fixed bracket (21), there is a fixed column (22) fixedly connected. In the middle of the inner top surface of the fixed bracket (21), there is a first fixed sleeve (23). Inside the first fixed sleeve (23), there is a first runner (24) rotatably connected. The first fixed sleeve (23) and the first runner (24) form a fixed pulley. One end of the fixed column (22) is fixedly connected with a displacement rope (25). The displacement rope (25) passes through the first runner (24). On the brake device (1), there is a second fixed sleeve (26). Inside the second fixed sleeve (26), there is a second runner (27) rotatably connected. The second fixed sleeve (26) and the second runner (27) form a movable pulley. The movable pulley is on the displacement rope (25) between the fixed bracket (21) and the fixed pulley. The bottom end of the second fixed sleeve (26) is fixedly connected with a first hanging rope (28). The output end of the piston rod inside the electro-hydraulic push rod device (11) is fixedly connected with a first displacement block (29). The bottom of the first hanging rope (28) penetrates through the first displacement block (29) and is sleeved with the first displacement block (29). The other end of the displacement rope (25) is fixedly connected with a second hanging rope (210). Inside the brake device (1), there is a counterweight (212). The counterweight (212) is made of iron material. In the middle of the top end of the counterweight (212), there is a second displacement block (211) fixedly connected. The bottom of the second hanging rope (210) penetrates through the second displacement block (211) and is sleeved with the second displacement block (211). The limit component also includes a threaded groove (213) opened on the inner bottom of the brake device (1). Inside the threaded groove (213), there is a threaded rod (214) threadedly connected. The top of the threaded rod (214) is fixedly connected with a gasket (215). The top of the gasket (215) is fixedly connected with an energized demagnetizing electromagnet (216). On the outer surface of the energized demagnetizing electromagnet (216), there is an interface protection shell (217). On one side of the interface protection shell (217), there is a wire (218).

2. The electro-hydraulic push brake locking device for a belt conveyor according to claim 1, characterized in that, The electro-hydraulic push rod device (11) is inside the fixed bracket (21). The piston rod inside the electro-hydraulic push rod device (11) is between the fixed pulley and the fixed column (22) and is in the same vertical plane.

3. The electro-hydraulic push type brake locking device for belt conveyor according to claim 1, characterized in that, The shape of the gasket (215) matches the shape of the energized demagnetizing electromagnet (216). The counterweight (212) and the energized demagnetizing electromagnet (216) are on the same vertical axis.

4. The electro-hydraulic push brake locking device for a belt conveyor according to claim 1, characterized in that, The centering assembly includes a base (31), the base (31) is fixedly connected to the bottom of the fixed bracket (21), a rotating groove (32) is formed in the top of the base (31), a sliding groove (33) is formed in the top end of the base (31), the rotating groove (32) communicates with the sliding groove (33), and a rack (34) is slidably connected inside the sliding groove (33).

5. The electro-hydraulic push brake locking device for a belt conveyor according to claim 4, characterized in that, The base (31) is located on the movement track of the counterweight (212).

6. The electro-hydraulic push brake locking device for a belt conveyor according to claim 4, characterized in that One side of the rack (34) is attached to the inner wall of one side of the fixed bracket (21).

7. An electro-hydraulic push brake locking device for a belt conveyor according to claim 4, characterized in that, The centering assembly further includes a rotating rod (35), the rotating rod (35) is rotatably connected in the sliding groove (33), a rotating gear (36) is fixedly connected to the surface of the top end of the rotating rod (35), the rotating rod (35) is meshed with the rack (34), a belt loop (37) is fixedly connected to the surface of the bottom end of the rotating rod (35), a transmission belt (38) is drivingly connected to the inner surface of the belt loop (37), a motor (39) is fixedly connected to the bottom of the base (31), and the output end of the motor (39) is fixed to the bottom end of the rotating rod (35).

8. The electro-hydraulic push brake locking device for a belt conveyor according to claim 7, characterized in that, The base (31) is located on the movement track of the energized demagnetizing electromagnet (216), and the energized demagnetizing electromagnet (216) is located inside the quadrilateral formed by the transmission belt (38).

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