A pulley locking device and method of use thereof

Abstract

The application discloses a belt pulley locking device and a use method thereof, relates to the technical field of brakes, and is based on the optimization and improvement of the speed reduction and locking system of a large-scale belt conveyor in the prior art, wherein a wheel brake assembly is arranged on a driven wheel of the belt conveyor, the locking of the driven wheel is assisted by a limiting body positioned on a rack and two brake blocks positioned on the outer edge of the belt pulley, the limiting body is embedded between the two brake blocks during use, and the damage of personnel and equipment caused by the misstart and brake failure is avoided; the belt brake assembly is arranged in the space surrounded by the conveying belt, and the belt brake assembly is used to abut against the inner ring of the conveying belt, so that the rapid and safe speed reduction is assisted; and the belt pulley locking device can efficiently and rapidly assist the belt pulley and the conveying belt of the large-scale belt conveyor to complete the speed reduction and locking requirements, and the safety, reliability and stability of the locking are high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of brake, in particular to a belt pulley locking device and a method thereof. BACKGROUND

[0002] Large belt conveyor is a common and key material handling equipment in casting operation, which mainly realizes high-speed, continuous and efficient material conveying between different processes in the casting process; the large belt conveyor at least includes two belt pulleys 001 and a conveying belt 002 sleeved on the two belt pulleys 001 and always in a straight state; the two belt pulleys 001 are respectively a driving pulley and a driven pulley; the large belt conveyor has the needs of brake locking and rapid stopping (the conveying belt 002 and the belt pulley 001 are stopped as quickly as possible and locked under the premise of safety guarantee) in the state of maintenance, jamming, cleaning and the like.

[0003] In the prior art, in order to avoid that the large belt conveyor is suddenly and urgently stopped during normal operation, which causes the parts to bear excessive inertia force, even causes the heavy object to slide, the heavy object to fall, the belt to be torn, the belt to slip, the belt to slip off and the belt to break, and further causes serious consequences (causes personnel injury and serious delay of production operation), the brake system of the large belt conveyor generally adopts energy consumption braking mode to cooperate with the band brake system on the driving pulley (the band brake system realizes braking and locking by using brake shoe type braking, that is, the braking and locking are realized by the way that the brake shoe is driven by the brake arm to abut against the rotating part); the conveying belt 002 and the belt pulley 001 are gradually decelerated, and the belt pulley 001 is locked by the band brake system by relying on the friction force when the speed is low; the above-mentioned braking and locking modes have certain safety risks (there are risks of misstarting and locking failure), low reliability, poor locking effect stability and low braking efficiency because the braking and locking only act on the driving pulley.

[0004] Therefore, it is necessary to provide a belt pulley locking device which can efficiently and quickly assist the belt pulley 001 and the conveying belt 002 of the large belt conveyor to complete the deceleration and locking requirements, the conveying belt 002 is not easy to slip during deceleration, and the safety, reliability and stability of locking are high. SUMMARY

[0005] The belt pulley locking device provided by the embodiment of the present application solves the technical problems of the large belt conveyor in the prior art, that is, the safety risks, low reliability, poor locking effect stability and low braking efficiency in the braking and locking process caused by the limitation of the structure of the large belt conveyor; and the belt pulley locking device can efficiently and quickly assist the belt pulley and the conveying belt of the large belt conveyor to complete the deceleration and locking requirements, and the safety, reliability and stability of locking are high.

[0006] The embodiment of the present application provides a belt pulley locking device which is arranged close to a driven wheel and comprises a wheel braking assembly and a belt braking assembly.

[0007] The wheel braking assembly comprises a braking block, a limiting body and a limiting body carrier;

[0008] The braking block is positioned at the end of the driven wheel and the number thereof is two;

[0009] The limiting body is plate-shaped or rod-shaped, is positioned on the limiting body carrier on the rack and is rotated into or slid into the gap between the braking blocks when the belt pulley needs to be locked;

[0010] The belt braking assembly comprises a bottom carrier which is positioned on the rack or the ground, a supporting telescopic body which is a telescopic column and is fixed to the top surface of the bottom carrier, a connection rack body which is positioned on the top of the supporting telescopic body, a horizontal loading plate which is a hard rectangular plate body and is fixed to the side surface of the connection rack body and an external guiding assembly;

[0011] The external guiding assembly is a conveying belt structure with two wheels and one belt, the two wheels are horizontally arranged and are positioned at the two ends of the horizontal loading plate, at least one wheel is controlled to rotate, the belt is sleeved on the two wheels and the inner ring is tightly attached to the top surface of the horizontal loading plate, and the belt of the external guiding assembly is composed of two or more rectangular pieces, the materials of different rectangular pieces are different and at least one piece is made of rubber.

[0012] Further, the external guiding assembly comprises a rotating roller, a roller carrier and a functional belt.

[0013] The rotating roller is a horizontal cylindrical roller body and the number thereof is two, the rotating roller is positioned at the two ends of the horizontal loading plate through the roller carrier, and the roller carrier is a block-shaped or plate-shaped hard support;

[0014] The functional belt is an annular belt body which is composed of a plurality of rectangular pieces, the materials of different rectangular pieces are different, and a plurality of functional areas are formed on the functional belt.

[0015] Further, the connection rack body comprises a U-shaped rack and a plate side rack.

[0016] The U-shaped rack is a U-shaped hard rack body with an upward opening, and the bottom surface of the U-shaped rack is fixed to the top surface of the supporting telescopic body.

[0017] The top end of the U-shaped rack is fixed with the plate side rack.

[0018] The plate side rack is a hard rack body, is fixed to the U-shaped rack and is fixed to the side surface of the horizontal loading plate.

[0019] Further, the bottom surface of the horizontal loading plate is provided with one or more pin loading holes.

[0020] A positioning pin is arranged in each pin loading hole and vertically extends and retracts under the control of the control unit;

[0021] A plurality of positioning holes are arranged on the functional belt and are adapted to the positioning pins;

[0022] During use, the relative movement of the functional belt and the transverse loading plate is locked as required by controlling the positioning pins to be inserted into the positioning holes.

[0023] Preferably, the transverse loading plate is a hollow structure and internally arranged with an internal guiding assembly;

[0024] A through slot is arranged at a position close to the center of the top of the transverse loading plate, and an accommodating cavity is arranged inside the through slot;

[0025] The through slot is in communication with the accommodating cavity, and a reversing roller is arranged on the side wall of the through slot;

[0026] The internal guiding assembly comprises a base carrier, a moving frame body, a connecting telescopic body, and a guiding roller;

[0027] The base carrier is arranged on the side wall of the accommodating cavity at both sides, and a space for the functional belt to pass through is arranged at the bottom;

[0028] The number of moving frame bodies is two, and each is arranged at the end of the base carrier;

[0029] The number of guiding rollers is two, and each is arranged on the moving frame body at the end of the base carrier;

[0030] The connecting telescopic body is a telescopic rod structure, and when it is retracted or extended, it drives the guiding roller away from or close to the base carrier;

[0031] The end of the transverse loading plate is arranged with a telescopic displacement assembly; when the telescopic displacement assembly is retracted or extended, it drives the rotating roller away from or close to the transverse loading plate;

[0032] The functional belt is sleeved on the two rotating rollers, passes through the through slot, and is sleeved on the two guiding rollers, and is always in a straightened state.

[0033] Preferably, the through slot is arranged at the bottom of the transverse loading plate.

[0034] Preferably, the support telescopic body is rotationally connected to the bottom carrier or the support loading plate about its own axis, and rotates under the cooperative control of the control unit and the power assembly;

[0035] The telescopic displacement assembly is arranged at the two ends of the transverse loading plate;

[0036] The functional belt further comprises a brush area and a wiping area.

[0037] Preferably, a support loading plate is arranged on the bottom carrier;

[0038] The support carrier slides along the width direction of the conveying belt under the cooperative control of the control unit and the power assembly;

[0039] The support telescopic body is positioned on the support carrier;

[0040] The top surface of the transverse carrier is provided with a blowing groove;

[0041] The functional belt is provided with a ventilation groove;

[0042] The functional belt is stretched to clean the inner circle of the conveying belt before, during or after the cleaning, and the blowing groove blows air to the inner circle of the conveying belt through the ventilation groove.

[0043] Preferably, the length of the bottom carrier is more than three times the width of the conveying belt;

[0044] The connecting frame further comprises a connecting frame and an upward telescopic body;

[0045] The length of the U-shaped frame is more than twice the width of the conveying belt;

[0046] The connecting frame is a transverse hard frame body, one end of which is fixed to the side surface of the transverse carrier;

[0047] The upward telescopic body is a telescopic rod structure controlled by the control unit, vertically arranged, and both ends are fixed to the side surface of the U-shaped frame and the end of the connecting frame away from the transverse carrier;

[0048] The transverse carrier is placed on the U-shaped frame.

[0049] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0050] By optimizing and improving the existing large belt conveyor deceleration and locking system, a wheel brake assembly is arranged on the driven wheel of the large belt conveyor, and the locking of the driven wheel is assisted by the limiting body positioned on the rack and controlled to rotate, and the two brake blocks positioned on the outer edge of the belt pulley. When in use, the rotation of the limiting body is embedded between the two brake blocks to limit the rotation of the driven wheel, avoiding damage to personnel and equipment caused by misoperation and brake failure; by arranging the belt brake assembly in the space surrounded by the conveying belt and using the belt brake assembly to resist the inner circle of the conveying belt, the rapid and safe deceleration is assisted; effectively solve the technical problems of safety risk, low reliability, poor locking effect stability and low braking efficiency of the large belt conveyor in the existing technology due to the limitation of its own structure; and further realize the technical effect that the belt pulley locking device can efficiently and quickly assist the belt pulley and the conveying belt of the large belt conveyor to complete the deceleration and locking requirement, and the safety, reliability and stability of the locking are high. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 A schematic diagram showing the positional relationship of the components of the pulley locking device of the present application;

[0052] Figure 2 A schematic diagram showing the external structure of the pulley locking device of the present application;

[0053] Figure 3 A schematic diagram showing the structure of the pulley locking device of the present application;

[0054] Figure 4 A schematic diagram showing the structure of the belt braking assembly;

[0055] Figure 5 A schematic diagram showing the internal structure of the belt braking assembly;

[0056] Figure 6 A schematic diagram showing the structure of the functional belt;

[0057] Figure 7 A schematic diagram showing the structure of the transverse carrier plate and the accessories thereon;

[0058] Figure 8 A schematic diagram showing the bottom structure of the transverse carrier plate;

[0059] Figure 9 A schematic diagram showing the positional relationship of the bottom carrier, the support carrier plate, the transverse carrier plate, the pulley and the conveying belt;

[0060] Figure 10 A schematic diagram showing the state of the belt braking assembly after rotation;

[0061] Figure 11 A schematic diagram showing the positional relationship between the transverse carrier plate, the engaging frame body and the bottom carrier;

[0062] Figure 12 A schematic diagram showing the structure between the transverse carrier plate, the engaging frame body and the bottom carrier;

[0063] Figure 13 A schematic diagram showing the state of the transverse carrier plate after being separated from the engaging frame body.

[0064] In the drawings:

[0065] Belt pulley 001, outer edge 011, conveyor belt 002, skirt 021, frame 003, brake stop 110, limit body 120, limit body carrier 130, control switch 140, bottom carrier 210, support carrier plate 220, support telescopic body 230, connecting frame 240, C-shaped frame 241, connecting frame 242, upward telescopic body 243, horizontal carrier plate 250, insertion groove 251, receiving cavity 252, reversing roller 253, pin mounting hole 254, air blowing groove 256, basic carrier 261, moving frame 262, connecting telescopic body 263, guide roller 264, rotating roller 271, roller frame 272, telescopic shifting assembly 273, functional belt 280, positioning hole 281, ventilation groove 282, carrier block 291, contact roller 292. Detailed Implementation

[0066] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0067] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0068] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0069] Example 1

[0070] like Figure 1 As shown, the large belt conveyor includes two pulleys 001 and a conveyor belt 002 that is sleeved on the two pulleys 001 and is always taut; the two pulleys 001 are the driving pulley and the driven pulley, respectively, both positioned on a frame 003 with a rod-shaped, plate-shaped, or frame structure; the conveyor belt 002 is an annular belt body, and its outer ring is provided with a retaining strip and a skirt 021; the driving pulley rotates under the drive of a motor and a reducer, and is equipped with a brake system (deceleration and locking system); the motor, reducer, and brake system all operate under the coordinated control of the control unit and the power component; the end of the pulley 001 is provided with an outer edge 011; the outer edge 011 is a plate-shaped ring body; the above structures are all prior art and will not be described in detail here.

[0071] As shown in Figures 1 to 8 The pulley locking device of the application comprises a wheel brake assembly and a belt brake assembly.

[0072] The wheel brake assembly comprises a brake block 110, a limiting body 120 and a limiting body carrier 130.

[0073] The brake block 110 is a hard block positioned at the end of the driven wheel close to the outer edge 011 or the inner ring of the outer edge 011, and the number is two. The distance between the two brake blocks 110 is one-eighth to one-tenth of the end face circumference of the pulley 001, which is used to cooperate with the limiting body 120 to limit the rotation of the pulley 001.

[0074] The limiting body carrier 130 is a hard rod or a hard plate positioned on the rack 003 and set close to the end of the driven wheel, which plays a role in carrying and supporting the limiting body 120.

[0075] The limiting body 120 is plate-shaped or rod-shaped, positioned on the limiting body carrier 130, and rotates or slides under the coordinated control of the control unit and the power assembly. When the pulley 001 needs to be locked, it rotates into or slides into the gap between the brake blocks 110.

[0076] Further, the brake block 110 is plate-shaped; the limiting body 120 is two prongs, one side or both sides of which are rotationally connected to the limiting body carrier 130; in the normal state, the teeth of the limiting body 120 are set away from the pulley 001, and when the pulley 001 needs to be locked, it rotates and moves to the gap between the brake blocks 110, at which time the outer edge 011 of the pulley 001 is inserted into the gap between the two teeth of the limiting body 120.

[0077] Further, the limiting body carrier 130 also has a control switch 140 positioned thereon; the control switch 140 is a key switch or a proximity switch, positioned on the side of the limiting body carrier 130 away from the pulley 001, and signal-connected with the control unit. In the normal state (non-locking operation state), it is in contact with or close to the limiting body 120, which is used to determine the position of the limiting body 120. Whether the limiting body 120 has moved and entered the locking operation state can be determined by the state of the control switch 140.

[0078] The belt brake assembly is set close to the driven wheel and comprises a bottom carrier 210, a supporting telescopic body 230, a connecting frame body 240, a transversely placed carrier plate 250 and an externally placed guide assembly.

[0079] The bottom carrier 210 is a hard frame positioned on the rack 003 or the ground, penetrating the space surrounded by the conveying belt 002, and the length direction is the same as the width direction of the conveying belt 002, which plays a role in carrying and supporting the supporting telescopic body 230.

[0080] The supporting telescopic body 230 is a rigid telescopic column, one end of which is fixed to the top surface of the bottom frame 210, and it extends and retracts under the coordinated control of the control unit and the power component.

[0081] The connecting frame 240 is positioned on top of the supporting telescopic body 230 and is a rod-shaped, plate-shaped or frame structure frame, used to support and fix the horizontally placed load plate 250 from the side.

[0082] The transverse carrier plate 250 is a rigid rectangular plate arranged horizontally, located in the space enclosed by the conveyor belt 002, with its length direction being the same as the width direction of the conveyor belt 002, and both sides being fixed to the connecting frame 240; a space is provided between the bottom of the transverse carrier plate 250 and the connecting frame 240 for the external guide component to pass through.

[0083] The external guide assembly is a conveyor belt structure with two wheels and a belt. Both wheels are arranged laterally and positioned at both ends of the transverse carrier plate 250. At least one wheel operates under the coordinated control of the control unit and the power component. The belt is sleeved on the two wheels and the inner ring is in close contact with the top surface of the transverse carrier plate 250. The belt of the external guide assembly is composed of two or more rectangular pieces. The materials of the different rectangular pieces are different, and the friction with the inner ring of the conveyor belt 002 is also different. At least one piece is made of rubber.

[0084] Furthermore, the bottom support frame 210 is a rigid frame in the shape of an inverted triangle, with its ends positioned on the frame 003 or on the ground.

[0085] Furthermore, such as Figure 4 As shown, the external guiding assembly includes a rotating roller 271, a roller frame 272, and a functional belt 280. The rotating roller 271 is a horizontally placed cylindrical roller (horizontally placed cylindrical wheel), and there are two of them. At least one of them operates under the coordinated control of the control unit and the power assembly, and is positioned at both ends of the horizontal carrier plate 250 by the roller frame 272. The roller frame 272 is a block-shaped or plate-shaped rigid support. The functional belt 280 is an annular belt composed of multiple rectangular pieces. The different rectangular pieces are made of different materials, forming multiple functional areas on the functional belt 280. The functional belt 280 is fitted onto the two rotating rollers 271, surrounding the horizontal carrier plate 250, and its inner circle is tightly attached to the top surface of the horizontal carrier plate 250.

[0086] Furthermore, such as Figure 4As shown, the adapter frame 240 comprises a U-shaped frame 241 and a plate side frame; the U-shaped frame 241 is an open upward U-shaped hard frame body, the bottom surface of which is fixed on the top surface of the support telescopic body 230; the top end of the U-shaped frame 241 is fixed with a plate side frame; the plate side frame is a hard frame body, which is fixed on the U-shaped frame 241 and the side surface of the transverse loading plate 250.

[0087] Further, in order to improve the braking effect on the belt, the functional belt 280 can be fixed on the transverse loading plate 250 as needed, as shown in Figure 6 and Figure 8 As shown, the bottom surface of the transverse loading plate 250 is provided with one or more pin loading holes 254; each pin loading hole 254 is provided with a positioning pin which is controlled to be telescopic and vertical by a control unit; the functional belt 280 is provided with a plurality of positioning holes 281 which are adapted to the positioning pins; during use, the relative movement of the functional belt 280 and the transverse loading plate 250 can be locked by controlling the positioning pins to be inserted into the positioning holes 281.

[0088] Further, in order to balance the load bearing force of the transverse loading plate 250 and the adapter frame 240 when the belt braking assembly is in contact with and extrudes the inner circle of the conveying belt 002, and prolong the service life of the two, as shown in Figure 5 As shown, a supporting assembly is further positioned between the transverse loading plate 250 and the adapter frame 240; the supporting assembly comprises a load block 291 and a contact roller 292; the load block 291 is a hard block which serves as a load bearing; the contact roller 292 is a transversely arranged hard roller body which is rotatably connected to the load block 291 and always contacts the bottom outer circle of the functional belt 280.

[0089] During use of the belt pulley locking device of the embodiment of the present application:

[0090] When it is necessary to lock the belt pulley 001 and the conveying belt 002 in order to stop operation or perform maintenance and repair operation:

[0091] After the driving pulley is locked by the brake system, the driven pulley is locked by rotating or sliding the control limiting body 120 into the gap between the brake blocks 110; at the same time, the area of the functional belt 280 made of rubber is turned upward and contacts and extrudes the inner circle of the conveying belt 002 to form a triple insurance;

[0092] When it is necessary to urgently stop the belt pulley 001 and the conveying belt 002 due to an emergency:

[0093] The control of the step-by-step brake of the holding brake system controls the continuous or intermittent contact of the belt brake assembly with the inner ring of the conveying belt 002, quickly consumes the inertia of the pulley 001 and the conveying belt 002, and then assists the efficient deceleration, avoiding serious consequences caused by sudden stop; when the running belt brake assembly consumes inertia to assist the sudden stop, the control unit controls the rotation of the functional belt 280 and the extension of the support telescopic body 230 according to the running state of the large belt conveyor (whether it is loaded and the running speed), matches the most suitable braking mode of the belt brake assembly in the current working condition (the braking mode includes the selection of the contact surface of the functional belt 280 and the inner ring of the conveying belt 002, the selection of the contact force, and the selection of the contact mode), so as to realize the fastest and safest sudden stop of the large belt conveyor in the current working condition.

[0094] Preferably, if the large belt conveyor fails to operate, the functional belt 280 can be used to drive the conveying belt 002 to rotate to discharge the material; during maintenance, if the conveying belt 002 needs to move slowly, the functional belt 280 can also be used to drive the conveying belt 002 to rotate to achieve the movement (it is relatively safer and easier to control to use the functional belt 280 to drive the conveying belt 002 to move during maintenance).

[0095] Preferably, in order to further improve the locking effect of the present application, as shown in Figure 5 and Figure 9 , when the conveying belt 002 needs to be locked, the end of the belt brake assembly close to the pulley 001 is inserted into the gap between the pulley 001 and the conveying belt 002 to limit the rotation of the two.

[0096] Preferably, as shown in Figure 5 , Figure 7 and Figure 8As shown, the transverse carrier plate 250 is a hollow structure with an internal guide assembly; the top of the transverse carrier plate 250 is provided with a penetrating slot 251 near the center, which is internally provided with a rectangular block-shaped accommodating cavity 252; the penetrating slot 251 is a long strip-shaped through slot, the length direction of which is the same as the width direction of the transverse carrier plate 250, and is in communication with the accommodating cavity 252; the side wall of the penetrating slot 251 is positioned with a reversing roller 253 for guiding the moving direction of the functional belt 280; the reversing roller 253 is a hard roller body, which is transversely arranged and has the same axial direction as the width direction of the transverse carrier plate 250; the internal guide assembly comprises a base carrier 261, a moving frame body 262, a connecting telescopic body 263 and a guide roller 264; the base carrier 261 is a hard frame body, which is positioned on the side wall of the accommodating cavity 252 at both sides, and is provided at the bottom with a space for the functional belt 280 to pass through; the moving frame body 262 is a hard frame body, which is two in number and is respectively located at both ends of the base carrier 261, and is used to carry and position the guide roller 264; the guide roller 264 is a cylindrical hard roller body, which is two in number and is respectively positioned on the moving frame body 262 at both ends of the base carrier 261; the axial direction of the guide roller 264 is the same as that of the rotating roller 271; the connecting telescopic body 263 is a telescopic rod structure, which is controlled by a control unit to be telescopic, is located between the moving frame body 262 and the base carrier 261 and is fixed at both ends thereof, and drives the guide roller 264 to move away from or close to the base carrier 261 when telescoping; the end of the transverse carrier plate 250 is positioned with a telescopic displacement assembly 273; the telescopic displacement assembly 273 is a telescopic rod structure controlled by a control unit to be telescopic, one end of which is fixed at the end of the transverse carrier plate 250, and the other end is fixed on the roller frame body 272; when the telescopic displacement assembly 273 is telescopic, the rotating roller 271 is driven to move away from or close to the transverse carrier plate 250; the functional belt 280 is sleeved on the two rotating rollers 271 at the same time, penetrates the penetrating slot 251 and is sleeved on the two guide rollers 264, and is always in a straightened state; when the locking pulley 001 and the conveying belt 002 are needed, the connecting telescopic body 263 is controlled to be retracted and the telescopic displacement assembly 273 is controlled to be elongated at the same time, so that the rotating roller 271 sleeved with the functional belt 280 is inserted into the gap between the locking pulley 001 and the conveying belt 002; the transverse carrier plate 250 is provided with an internal cavity, an internal guide assembly and a telescopic displacement assembly 273, which can make the functional belt 280 sleeved on the transverse carrier plate 250 longer under the premise that the volume of the transverse carrier plate 250 is small, thereby enabling more larger functional areas to be divided on the functional belt 280.

[0097] Further, the number of the telescopic displacement assembly 273 is one or two, which is positioned at one end or both ends of the transverse carrier plate 250.

[0098] Preferably, the penetrating slot 251 is located at the bottom of the transverse carrier plate 250.

[0099] Preferably, asFigure 9 As shown in the drawings, the support plate 220 is positioned on the bottom carrier 210 and slides along a direction perpendicular to the pulley 001 under the coordinated control of the control unit and the power assembly; the support telescopic body 230 is positioned on the support plate 220; when the pulley 001 and the conveying belt 002 need to be locked, the support plate 220 is controlled to slide so that the rotating roller 271 with the functional belt 280 is inserted into the gap between the pulley 001 and the conveying belt 002.

[0100] Preferably, in order to further expand the functions of the device and further improve its practicability, as shown in Figure 4 、 Figure 6 and Figure 10 , the support telescopic body 230 is rotatably connected to the bottom carrier 210 or the support plate 220 about its own axis and rotates under the coordinated control of the control unit and the power assembly; the telescopic displacement assembly 273 is positioned at both ends of the transverse carrier plate 250; the functional belt 280 includes a brush area and a wiping area in addition to the functional area for deceleration and locking; the brush area and the wiping area are both rectangular, the brush area is densely covered with bristles, and the wiping area is densely covered with cotton wicks; during routine maintenance work, the transverse carrier plate 250 can be controlled to rotate by 90 degrees, and then the external guide assembly is controlled to stretch (the telescopic displacement assembly 273 is elongated), ensuring that the functional belt 280 protrudes from both sides of the space surrounded by the conveying belt 002 after stretching; thereafter, the functional belt 280 is controlled to abut against the inner ring of the conveying belt 002, and the conveying belt 002 is controlled to move, thereby efficiently cleaning and maintaining the inner ring of the conveying belt 002, replacing manual regular cleaning of the inner ring of the conveying belt 002, reducing labor intensity and prolonging the service life of the conveying belt 002.

[0101] Further, the brushes of the brush area are arranged in a V shape.

[0102] In order to further improve the cleaning and maintenance effect, preferably, as shown in Figure 1 、 Figure 8 and Figure 9As shown, the bottom carrier 210 is positioned with a support carrier 220; the support carrier 220 slides along the width direction of the conveying belt 002 under the coordinated control of the control unit and the power assembly; the support telescopic body 230 is positioned on the support carrier 220; the top surface of the transverse carrier 250 is provided with a blowing groove 256; the blowing groove 256 is used for blowing gas to clean the inner ring of the conveying belt 002; the blowing groove 256 is in communication with the air pump; the functional belt 280 is provided with a ventilation groove 282; the ventilation groove 282 is a strip-shaped through groove, the number is multiple, and the length direction is the same as the width direction of the functional belt 280; before and after or during the functional belt 280 is stretched to scrub and clean the inner ring of the conveying belt 002, the blowing groove 256 is controlled to blow air to the inner ring of the conveying belt 002 through the ventilation groove 282; during the blowing process, the support carrier 220 is controlled to slide to expand the range that can be blown.

[0103] Further, the top of the transverse carrier 250 is also provided with an air inlet groove in communication with the dust container and the air pump, which can assist in cleaning before, during and after the blowing of the blowing groove 256.

[0104] The technical solutions in the above embodiments of the application have at least the following technical effects or advantages:

[0105] The technical problems of safety risk, low reliability, poor stability of locking effect and low braking efficiency of the large belt conveyor caused by the limitation of the structure of the large belt conveyor in the prior art are solved; the technical effect that the pulley locking device can efficiently and quickly assist the large belt conveyor to complete the speed reduction and locking requirements of the pulley and the conveying belt, and the safety, reliability and stability of the locking are high is achieved.

[0106] Embodiment 2

[0107] In order to further improve the cleaning and maintenance effect, further reduce the labor intensity and further improve the practicability of the device, so that the device can not only automatically clean the inner ring of the conveying belt 002, but also efficiently clean the outer ring of the conveying belt 002 to improve the cleaning efficiency and cleaning operation convenience, the structure of the bottom carrier 210 and the connecting frame body 240 is further optimized and improved based on the above embodiment, specifically:

[0108] As shown in Figures 11 to 13 The length of the bottom carrier 210 is more than three times the width of the conveying belt 002;

[0109] The connecting frame body 240 further includes a connecting frame 242 and an upward telescopic body 243;

[0110] The length of the frame 241 is more than twice the width of the belt 002;

[0111] The connecting frame 242 is a horizontal hard frame body, one end of which is fixed to the side of the horizontal loading plate 250;

[0112] The upward telescopic body 243 is a telescopic rod structure controlled by a control unit, vertically arranged, and both ends are fixed to the side of the frame 241 and the end of the connecting frame 242 away from the horizontal loading plate 250;

[0113] The horizontal loading plate 250 is placed on the frame 241 (not fixed to the frame 241);

[0114] If the belt 002 of the large belt conveyor has no skirt 021, the support loading plate 220 is controlled to slide and cooperate with the telescopic body 243 to move the horizontal loading plate 250 and the functional belt 280 to the top of the belt 002 to clean the outer ring of the belt 002 by wiping and blowing. If the belt 002 of the belt conveyor has a skirt 021, only the outer ring of the belt 002 is cleaned by blowing, and during the cleaning, the functional belt 280 can be controlled to move after contacting the skirt 021 to bend the skirt 021 to expose the corner of the skirt 021 for blowing cleaning.

[0115] Preferably, the side of the horizontal loading plate 250 is provided with a camera, and when the belt 002 is cleaned, the operator can observe the working site through the camera to control the movement of the horizontal loading plate 250 to clean the belt 002 with emphasis.

[0116] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A pulley locking device characterized by comprising: Close to the driven wheel is provided, including the wheel brake assembly and belt brake assembly; The wheel brake assembly includes brake block (110), limiting body (120) and limiting body carrier (130); The brake block (110) is positioned at the end of the driven wheel, and the number is two; The limiting body (120) is plate-shaped or rod-shaped, positioned on the limiting body carrier (130) on the rack (003), and needs to be locked when the pulley (001) is rotated into or slid into the gap between the brake blocks (110); The belt brake assembly includes bottom carrier (210) positioned on the rack (003) or the ground, support telescopic body (230) fixed on the top surface of the bottom carrier (210) and being a telescopic column, link frame body (240) positioned on the top of the support telescopic body (230), transversely loaded plate (250) which is a hard rectangular plate body and is fixed on the side surface of the link frame body (240), and external guide assembly; The external guide assembly is a conveyor belt structure with two wheels and a belt, both wheels are transversely arranged and positioned at both ends of the transversely loaded plate (250), at least one wheel is controlled to rotate, the belt is sleeved on the two wheels and the inner ring is tightly attached to the top surface of the transversely loaded plate (250); The belt of the external guide assembly is composed of two or more rectangular pieces, the materials of different rectangular pieces are different, at least one piece is made of rubber; The transversely loaded plate (250) is a hollow structure, and the internal guide assembly is arranged inside; The top of the transversely loaded plate (250) is provided with a penetrating groove (251) near the center, and an accommodating cavity (252) is arranged inside; The penetrating groove (251) is in communication with the accommodating cavity (252), and a reversing roller (253) is positioned on the side wall; The internal guide assembly includes a base carrier (261), a moving frame body (262), a link telescopic body (263) and a guide roller (264); The base carrier (261) is positioned on the side wall of the accommodating cavity (252) on both sides, and the bottom is provided with a space for the functional belt (280) to pass through; The moving frame body (262) is two, respectively located at both ends of the base carrier (261); The guide roller (264) is two, respectively positioned on the moving frame body (262) at both ends of the base carrier (261); The link telescopic body (263) is a telescopic rod structure, which drives the guide roller (264) away from or close to the base carrier (261) when telescoping; The end of the transversely loaded plate (250) is provided with a telescopic displacement assembly (273); When the telescopic displacement assembly (273) telescopes, the rotating roller (271) is driven away from or close to the transversely loaded plate (250); The functional belt (280) is sleeved on the two rotating rollers (271) and is inserted into the penetrating groove (251) and sleeved on the two guide rollers (264), and is always in a straight state.

2. The pulley locking device according to claim 1, characterized in that: The external guide assembly includes rotating roller (271), roller frame body (272) and functional belt (280); The rotating roller (271) is a horizontally placed cylindrical roller body, and two of them are positioned at both ends of the horizontal loading plate (250) through a roller support body (272); the roller support body (272) is a block-shaped or plate-shaped hard support; The functional belt (280) is an annular belt body combined by a plurality of rectangular pieces, and different rectangular pieces are made of different materials, thereby forming a plurality of functional areas on the functional belt (280).

3. The pulley locking device according to claim 2, wherein: The connecting support body (240) comprises a U-shaped support (241) and a plate side support; The U-shaped support (241) is a U-shaped hard support body with an upward opening, and the bottom surface is fixed to the top surface of the supporting telescopic body (230); The top end of the U-shaped support (241) is fixed with a plate side support; The plate side support is a hard support body, which is fixed to the U-shaped support (241) and the side surface of the horizontal loading plate (250) at the same time.

4. The pulley locking device of claim 2, wherein: The bottom surface of the horizontal loading plate (250) is provided with one or more pin loading holes (254); Each pin loading hole (254) is provided with a positioning pin which is controlled to be telescopic and vertically by a control unit; The functional belt (280) is provided with a plurality of positioning holes (281) which are adapted to the positioning pins; During use, the relative movement of the functional belt (280) and the horizontal loading plate (250) is locked as needed by controlling the positioning pins to be inserted into the positioning holes (281).

5. The pulley locking device of claim 1, wherein: The penetrating groove (251) is located at the bottom of the horizontal loading plate (250).

6. The pulley locking device according to claim 1 or 5, wherein: The supporting telescopic body (230) is rotatably connected to the bottom support frame (210) or the supporting loading plate (220) around its own axis, and rotates under the cooperative control of the control unit and the power assembly; The telescopic displacement assembly (273) is positioned at both ends of the horizontal loading plate (250); The functional belt (280) further comprises a brush area and a wiping area.

7. The pulley locking device of claim 3, wherein: The bottom support frame (210) is provided with a supporting loading plate (220); The supporting loading plate (220) slides along the width direction of the conveying belt (002) under the cooperative control of the control unit and the power assembly; The supporting telescopic body (230) is positioned on the supporting loading plate (220); The top surface of the horizontal loading plate (250) is provided with a blowing groove (256); The functional belt (280) is provided with an air passage groove (282); Before, during or after the functional belt (280) is stretched to wipe and clean the inner ring of the conveying belt (002), the blowing groove (256) blows air to clean the inner ring of the conveying belt (002) through the air passage groove (282).

8. The pulley locking device of claim 7, wherein: The length of the bottom support frame (210) is more than three times the width of the conveying belt (002); The connecting support body (240) further comprises a connecting support (242) and an upward telescopic body (243); The length of the U-shaped support (241) is more than twice the width of the conveying belt (002); The connecting support (242) is a horizontally placed hard support body, and one end is fixed to the side surface of the horizontal loading plate (250); The upward telescopic body (243) is a telescopic rod structure controlled by a control unit, which is vertically arranged, and both ends are fixed to the side surface of the U-shaped support (241) and the end of the connecting support (242) away from the horizontal loading plate (250), respectively. The transverse carrier (250) is placed on the frame (241).

9. A method of using a pulley locking device, characterized by: The pulley locking device is matched with the pulley locking device of claim 1. When the pulley (001) and the conveying belt (002) need to be locked for stopping operation or for maintenance and repair: After the driving pulley is locked by the brake system, the control limiting body (120) is rotated into or slid into the gap between the brake blocks (110) to lock the driven pulley. At the same time, the rubber area of the control function belt (280) is upwardly pressed against the inner ring of the conveying belt (002) to form a triple insurance. When the pulley (001) and the conveying belt (002) need to be suddenly stopped due to an emergency: While the brake system is gradually controlled to brake, the belt brake assembly is continuously or intermittently pressed against the inner ring of the conveying belt (002) to quickly consume the inertia of the pulley (001) and the conveying belt (002) and to assist efficient deceleration, thereby avoiding serious consequences caused by sudden stop.

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