CN114132716B - Pipe belt machine and broken belt capturing device thereof - Google Patents
Pipe belt machine and broken belt capturing device thereof Download PDFInfo
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- CN114132716B CN114132716B CN202111468923.6A CN202111468923A CN114132716B CN 114132716 B CN114132716 B CN 114132716B CN 202111468923 A CN202111468923 A CN 202111468923A CN 114132716 B CN114132716 B CN 114132716B
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000001360 synchronised effect Effects 0.000 claims abstract description 8
- 238000010030 laminating Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/60—Arrangements for supporting or guiding belts, e.g. by fluid jets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Belt Conveyors (AREA)
Abstract
The invention discloses a pipe belt machine and a broken belt capturing device thereof, wherein racks which are obliquely arranged are respectively arranged at two sides of a bracket, gears which are meshed with the racks and are matched with each other are fixedly arranged at the shaft ends of two sides of a roller shaft, and a roller body of the roller shaft is sleeved on the roller shaft; the carrier roller body is provided with a plurality of overturning capturing pieces which are circumferentially arranged on the outer peripheral body at intervals, and the carrier roller shaft and the carrier roller body can rotate in a unidirectional and synchronous way and are configured to: when the conveying belt positively displaces to drive the roller body to rotate along the first direction, the roller shaft and the roller body do not synchronously rotate; when the conveyer belt is reversely displaced to drive the roller body to rotate along the second direction, the roller shaft and the roller body synchronously rotate, the roller shaft and the roller body can be sequentially meshed along the racks through the gears, a trend of tooth displacement towards the second end of the roller shaft is formed, and the overturning capturing piece is positioned at the capturing working position. By the adoption of the scheme, reliable capturing operation can be rapidly triggered when a belt breakage accident occurs, and technical guarantee is provided for safe and reliable operation of a conveying system.
Description
Technical Field
The invention relates to the technical field of material conveying, in particular to a pipe belt machine and a broken belt capturing device thereof.
Background
At present, the pipe belt machine has good comprehensive conveying performance, is widely applied to industries such as electric power, metallurgy, ports and the like, and has a development trend of large-traffic and long distances. As is well known, for an up-feed pipe belt machine, the tension borne by the conveyor belt during the material lifting process is very high, and the motor needs to output a relatively high torque to drive the conveyor to operate normally. During long-term continuous operation of the conveyor belt, fatigue damage or impact damage by foreign objects may occur, which may lead to sudden breakage of the conveyor belt during operation, which is referred to as belt breakage.
When the belt is broken, the conveying belt can slide reversely with the material at high speed. Because the conveying capacity is large and the distance is long, the material can continuously accelerate when the material slides backwards, the kinetic energy is very large, the conveyor belt entrains the material to destroy the conveyor frame and damage the roadway, so that long-time production stopping and great economic loss are caused, and the personal safety of on-site workers is even influenced.
In order to solve the problem, the prior art proposes to install broken belt capturing device on a pipe belt machine, the scheme comprises capturing mechanism and triggering mechanism, the triggering mechanism comprises a driving carrier roller and a ratchet guiding component, reverse rotation of an upper carrier roller is utilized as a switch for triggering a torsion spring, the triggering force is small, the upper carrier roller is frequently not contacted with an adhesive tape, and the defect of lower reliability exists.
In view of the above, a new approach is needed to be developed to optimize the broken belt capturing scheme of the existing pipe belt machine, and on the basis of meeting the basic output performance, broken belt capturing can be timely and effectively realized.
Disclosure of Invention
In order to solve the technical problems, the invention provides the pipe belt machine and the broken belt capturing device thereof, which can be rapidly triggered to realize reliable capturing operation when a broken belt accident occurs, and provide technical guarantee for safe and reliable operation of a conveying system.
The invention provides a broken belt capturing device which is used for a pipe belt machine and comprises a bracket, a roller shaft and a roller body; the rack is used for being fixed at the side of a conveying belt of the pipe belt machine, racks which are obliquely arranged are respectively arranged at two sides of the rack, the rack is a first end relative to the far end of the conveying belt, and the rack is a second end relative to the near end of the conveying belt; gears which are engaged with the racks and matched with the racks are fixedly arranged at the shaft ends of the two sides of the roller shaft; the carrier roller body is sleeved on the carrier roller shaft and used for laminating and pressing the conveying belt; the carrier roller body is provided with a plurality of overturning capturing pieces which are circumferentially arranged on the outer peripheral body at intervals, each overturning capturing piece can be switched between a normal working position and a capturing working position relative to the body rotation of the carrier roller body, and the overturning capturing pieces are configured to: when the overturning capturing piece is positioned at a normal working position, the outer contour surface of the overturning capturing piece does not exceed the outer peripheral surface of the roller body; when the conveyer belt is positioned at the capturing working position, the capturing end of the overturning capturing piece rotates to the radial outer side of the carrier roller body so as to squeeze the conveyer belt to deform towards the center side of the conveyer belt; the roller shaft and the roller body can rotate in a unidirectional and synchronous way and are configured to: when the carrier roller body is driven to rotate along a first direction by forward displacement of the conveying belt, the carrier roller shaft and the carrier roller body do not synchronously rotate, the gear is meshed with the teeth at the first end of the rack, and the overturning capturing piece is in a normal working position; when the carrier roller body is driven to rotate along the second direction by the reverse displacement of the conveying belt, the carrier roller shaft and the carrier roller body synchronously rotate, the gear can be meshed with the rack in sequence to form a trend of tooth displacement towards the second end of the rack, and the overturning capturing piece is positioned at a capturing working position.
Optionally, guide parts are respectively arranged on two sides of the bracket, and the guide parts positioned on the same side are arranged adjacent to the racks and are obliquely arranged in the same direction with the racks; the two side shaft ends of the carrier roller shaft are respectively provided with a sliding limiting part which is arranged adjacent to the gear, the sliding limiting parts are in sliding fit with the guiding parts on the corresponding sides, and a limiting pair which can limit the gear to be separated from the rack is formed between the sliding limiting parts.
Optionally, a strip-shaped annular guide rail is arranged on the bracket outside each rack, and the guide part is formed on the inner ring of the strip-shaped annular guide rail; and clamping grooves are formed in the roller shaft at the outer side of each gear, and the sliding limiting parts are formed in the groove walls of the clamping grooves.
Optionally, the carrier roller body comprises an inner tube body and an outer shell body which are nested, and a plurality of webs which are fixedly arranged between the inner tube body and the outer shell body at intervals in the circumferential direction; the inner pipe body is sleeved on the roller shaft, and the inner pipe body and the roller shaft are in clearance fit; the overturning capturing piece is an arc-shaped turning plate with the same curvature as the outer shell, a plurality of openings capable of accommodating the turning plate are formed in the outer shell, and the turning plate is rotationally connected with the inner wall of the outer shell through a rotating shaft; the rotating shaft is arranged in parallel with the carrier roller shaft, the arc length of the first turning plate body on one side of the rotating shaft is larger than that of the second turning plate body on the other side of the rotating shaft, and the capturing end is formed on the plate edge of the first turning plate body far away from the rotating shaft.
Optionally, the inner wall of the outer shell is provided with a limiting part which is correspondingly arranged with the first turning plate body so as to limit the first turning plate body to rotate to the radial inner side of the carrier roller body.
Optionally, a limiting plate is disposed on an inner edge of the opening opposite to the capturing end, and extends circumferentially from the inner edge of the opening to form the limiting portion.
Optionally, a fixed end of the web with the outer housing is configured to: the first turning plate body is positioned on the same side of the rotating shaft relative to the rotating shaft; and the body of the web plate and the second turning plate body rotating to the capturing working position form a stop limit pair.
Optionally, a unidirectional bearing is disposed between the idler shaft and the idler body to form the unidirectional synchronous rotation.
Optionally, the support, the idler shaft and the idler body are configured into at least three groups and are arranged at intervals along the circumferential direction of the conveyor belt.
The invention also provides a pipe belt machine, which comprises a bearing section rack and a return section rack, wherein the bearing section rack and the return section rack are respectively provided with a bracket of a bearing roller, and the pipe belt machine further comprises the broken belt capturing device, wherein the bracket is fixedly arranged on the bearing section rack and/or the bracket on the return section rack and is fixed on the opposite side of the bearing roller of the bracket.
Aiming at the structural characteristics of the pipe belt conveying belt and the truss, the invention provides a broken belt capturing device, and a quick triggering and reliable capturing mechanism is constructed. Specifically, the rack that the slope was arranged is provided with respectively to the both sides of support, and correspondingly, bearing roller axle tip configuration has with this rack meshed gear, and the support roller body of suit on the bearing roller axle is used for laminating pressure to the conveyer belt, and during normal operation of conveyer belt (forward displacement), based on the unidirectional synchronous rotation relation between the two, the bearing roller body can rotate along first direction around the bearing roller axle thereupon, and under the normal working position, the outer profile face of the upset on the bearing roller body is arrested the piece and is not surpassed the outer peripheral surface of the bearing roller body, satisfies the needs of system normal operation. When a belt breakage accident occurs, the conveying belt reversely displaces, the carrier roller body drives the carrier roller shaft to rotate along the second direction, and based on the meshing relationship between the end gear of the carrier roller shaft and the rack, the carrier roller shaft displaces from the first end of the rack towards the second end of the rack when synchronously rotating with the carrier roller body, namely, the carrier roller shaft drives the carrier roller body to wholly displace along the rack and moves from one end far away from the conveying belt to the other end close to the conveying belt, and the carrier roller body wholly translates towards the center of the conveying belt to form extrusion to the tubular conveying belt; meanwhile, the overturning capturing piece can be switched to a capturing working position relative to the roller body, and the capturing end of the overturning capturing piece rotates to the radial outer side of the roller body so as to squeeze the conveying belt to deform towards the center side of the conveying belt, so that the friction resistance between the conveying belt and the capturing roller body is increased until the conveying belt stops moving, and capturing of the conveying belt is realized rapidly. Compared with the prior art, the invention has the following beneficial technical effects:
firstly, this scheme realizes triggering based on roller axle and the synchronous rotation of bearing roller body, and this power transmission process has realized passive broken belt and has the characteristics that trigger is rapid accurate. Meanwhile, based on the fact that the carrier roller body integrally translates towards the center of the conveying belt and the capturing end of the overturning capturing piece extrudes the conveying belt to deform towards the center side of the conveying belt, capturing friction resistance which is gradually increased is built and formed together, the tubular conveying belt can be ensured to be effectively gripped, and accordingly the conveying belt is prevented from performing uncontrolled movement. Has the characteristics of simple and reliable structure.
Secondly, the support serving as a basic structure of the capturing mechanism in the scheme is fixed on the side of a conveying belt of the pipe belt machine, such as, but not limited to, a bearing roller frame on a bearing section frame and/or a return section frame; by the arrangement, on one hand, the existing structure of the existing pipe belt machine is fully utilized, and a reliable capturing function is achieved; in addition, the capturing function is realized without increasing civil engineering requirements, and the engineering realization cost is effectively controlled.
Thirdly, in the alternative scheme of the invention, a limit pair which can be slidably matched is additionally arranged between the support and the carrier roller shaft, and specifically, the limit pair is realized through guide parts on two sides of the support and sliding limit parts on two sides of the carrier roller shaft which are matched. Therefore, in the process that the carrier roller shaft drives the carrier roller body to wholly displace along the rack, a limiting pair capable of limiting the gear to separate from the rack is constructed between the carrier roller shaft and the rack, displacement of the carrier roller shaft along a preset track is ensured, and the reliability of dynamic fit of the device is further improved.
Fourth, in another alternative scheme of the invention, the overturning and capturing piece is an arc-shaped turning plate with the same curvature as the outer shell, and is rotationally connected with the inner wall of the outer shell through a rotating shaft, and the arc length of a first turning plate body at one side of the rotating shaft is longer than that of a second turning plate body at the other side of the rotating shaft; the setting is so under the effect of bearing roller body counter-rotating centrifugal force, has the first board body that turns over of catching the end and can outwards throw away, accurately realizes the switching of catching the working position. In addition, the inner wall of the outer shell can be provided with a limiting part which is arranged corresponding to the first turning plate body so as to limit the first turning plate body to rotate to the radial inner side of the carrier roller body, and the working reliability under normal operation can be further ensured.
Drawings
FIG. 1 is a schematic view of a use state of a broken belt capturing device according to an embodiment;
FIG. 2 is a schematic view of the overall structure of the broken belt capturing device according to the embodiment;
FIG. 3 is a schematic view of the overall structure of a roller body according to an embodiment;
FIG. 4 is a schematic view of the roller body of FIG. 3 in a captured state;
FIG. 5 is a schematic view of the use state of the broken belt capturing device in normal operation of the pipe belt machine;
FIG. 6 is a schematic view of the use of the broken belt capture device during broken belt operation of the pipe belt;
FIG. 7 is a schematic view of the overall structure of the bracket according to the embodiment;
fig. 8 is a schematic view of the overall structure of the idler shaft according to the embodiment;
fig. 9 is a schematic view illustrating another use state of the broken belt capturing device according to the embodiment.
In the figure:
the broken belt capturing device 100, a roller body 110, a turning plate 111, a first turning plate body 111-1, a second turning plate body 111-2, a rotating shaft 112, an inner pipe 113, a web 114, a limiting plate 115, an outer shell 116, a roller shaft 120, a one-way bearing 121, a gear 122, a clamping groove 123, a bracket 130, a plane 131, a vertical face 132, a strip-shaped annular guide rail 133, a rack 134, a first end 1341 and a second end 1342;
a carrier roller 200, a bracket 300 and a conveyor belt 400.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Without loss of generality, the embodiment uses the bracket 300 of the carrier roller 200 of the pipe belt conveyor as a basic fixing structure, and the implementation scheme of the broken belt capturing device provided by the application is described in detail. In operation, the carrier 300 in the carrying section a or the return section B of the pipe-and-belt machine maintains the cylindrical conveying state of the conveying belt 400 through the carrying rollers 200 arranged on the carrier 300. It should be understood that the specific functional structure of the carrier roller 200 is not a core invention point of the present application, and those skilled in the art can implement the present invention based on the prior art, so that the description thereof is omitted herein.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic view of a usage state of the broken belt capturing device according to the present embodiment, and fig. 2 is a schematic view of an overall structure of the broken belt capturing device according to the present embodiment.
The broken belt capturing device 100 mainly comprises a bracket 130, a roller shaft 120 and a roller body 110, so as to construct a quick triggering and reliable capturing mechanism. In this embodiment, the carrier 300 of the carrier roller 200 is used as a base fixing structure. As shown in fig. 1, the bracket 130 is fixed beside a conveyor belt 300 of the tube mill.
Of course, in other implementations, the broken belt capture device 100 may also be configured with a fixed base structure independently to fixedly mount its support 130; that is, the support frame as the basic structure of the catching mechanism is only fixed to the side of the conveyor 400 of the pipe belt machine, and is not limited to the carrier 300 of the carrier roller 200 on the carrier section frame and/or the return section frame. Compared with the prior structure of the pipe belt machine, the method and the device fully utilize the prior structure of the pipe belt machine, the construction requirement is not required to be increased in the implementation of the capturing function, and the engineering implementation cost is effectively controlled.
In this scheme, three special carrier rollers of broken belt capturing device 100 are arranged on one side of bracket 300, three carrier rollers 200 for common conveying are arranged on the other side of bracket 300, and six carrier rollers are circumferentially and alternately arranged around tubular conveying belt 400. Based on the adaptive structures between the roller body 110 and the roller shaft 120 and between the roller shaft 120 and the bracket 130, the rapid triggering of the catching action can be realized when the conveyer belt 400 moves reversely after belt breakage; meanwhile, based on the dynamic matching relation between the roller shaft 120 and the bracket 130 and the design of the catching structure on the roller body 110, when the conveyer belt 400 moves reversely after belt breakage, the catching roller can generate huge friction force and extrusion force on the conveyer belt, thereby playing an effective role in braking.
As shown in fig. 2, two sides of the bracket 130 are respectively provided with racks 134 which are obliquely arranged, and in this scheme, it is defined that: the rack 134 is at a first end 1341 relative to the distal end of the conveyor belt 400 and, correspondingly, the rack 134 is at a second end 1342 relative to the proximal end of the conveyor belt 400 to clearly illustrate the substantial role and dynamic fit principle thereof in the capture process. Here, the first end 1341 and the second end 1342 of the rack 134 are primarily used to define the angular arrangement of the positional relationship, and are not to be construed as limiting to a particular end position.
Wherein, the two side shaft ends of the carrier roller shaft 120 are fixedly provided with gears 122 which are meshed and matched with racks 134; the rack 134 is fixedly provided based on an oblique direction, and when the carrier roller shaft 120 rotates, the gear 122 is sequentially engaged with teeth of the rack 134 and is linearly displaceable in the arrangement direction of the rack 134.
The roller body 110 is sleeved on the roller shaft 120 to fit against the conveyor belt 400 as shown in fig. 1. Referring to fig. 3 and fig. 4 together, fig. 3 is a schematic view of the overall structure of the roller body according to the embodiment, and fig. 4 is a schematic view of the roller body in a capturing state shown in fig. 3.
The carrier roller body 110 has a plurality of overturning capturing pieces (111) circumferentially arranged on a peripheral body thereof at intervals, each overturning capturing piece (111) being switchable between a normal operation position and a capturing operation position with respect to the body rotation of the carrier roller body 110 and configured to: in the normal operating position shown in fig. 3, the outer contour surface of the overturning capturing member (111) does not exceed the outer peripheral surface of the carrier roller body 110; when in the capturing working position shown in fig. 4, the capturing end (extending out of the outer end of the roller body 110) of the overturning capturing piece (111) rotates to the radial outer side of the roller body 110 so as to press the conveyer belt to deform towards the center side thereof; referring to fig. 5 and fig. 6, fig. 5 is a schematic view of a usage state of the broken belt capturing device 100 when the pipe belt machine is operating normally, and fig. 6 is a schematic view of a usage state of the broken belt capturing device 100 when the pipe belt machine is operating (capturing) broken belt.
Specifically, the idler shaft 120 and the idler body 110 in this embodiment can rotate synchronously in one direction, and are configured to: when the carrier roller body 110 is rotated in the first direction by the forward displacement of the conveyor 400 (the normal running direction of the tube belt shown in fig. 5), the carrier roller shaft 120 and the carrier roller body 110 do not rotate synchronously, and the carrier roller shaft 120 does not follow the rotation of the carrier roller body 110; the gear 122 on the roller shaft 120 is meshed with the teeth of the first end 1341 of the rack 134, and the overturning capturing piece (111) is in a normal working position, so that the normal operation requirement of the system is met; when the carrier belt 400 is reversely displaced (the running direction of the broken pipe belt shown in fig. 6) to rotate the carrier roller body 110 in the second direction, the carrier roller shafts 120 and the carrier roller body 110 rotate synchronously, the gear 122 is sequentially meshed along the rack 134 and forms a tendency of tooth displacement toward the second end 1342 thereof, and the overturning capturing piece (111) is in the capturing working position.
That is, the roller shaft 120 drives the roller body 110 to move along the rack 134, and moves from one end far from the conveyor belt 400 to the other end close to the conveyor belt 400, and the roller body 110 translates toward the center of the conveyor belt 400, so as to squeeze the tubular conveyor belt 400; meanwhile, the overturning capturing piece (111) can be switched to a capturing working position relative to the carrier roller body 110, the capturing end of the overturning capturing piece rotates to the outer side of the carrier roller body 100 in the radial direction, the conveying belt 400 can be further extruded to deform towards the center side of the overturning capturing piece, the friction resistance between the conveying belt 400 and the capturing carrier roller body 110 is increased until the conveying belt 400 stops moving, and therefore capturing of the conveying belt is achieved rapidly.
It is understood that the bracket 130 may take different forms, as long as the basic fixed bearing function is satisfied. Alternatively, the present embodiment employs a bracket 130 having a substantially inverted n-shape, and reference is made to fig. 7, which is a schematic diagram of the overall structure of the bracket.
As shown in fig. 7, a plane 131 is formed in the middle of the bracket 130, and when assembled, the plane 131 can be attached and fixed on the bracket 300 of the carrier roller, so as to realize the basic positioning of the bracket 130. The two lateral ends of the support 130 extend to form vertical faces 132, and each vertical face 132 is perpendicular to the plane 131 in the middle of the support 130. Wherein racks 134 for fitting with the shaft end gears 122 of the carrier roller shafts 123 are provided on the vertical surfaces 131 on both sides of the bracket 130, respectively. Has the characteristics of simple and reliable structure.
To further improve the reliability of the dynamic engagement of the device's roller shaft with the bracket, a sliding stop pair may be constructed therebetween that limits the disengagement of the gear 122 from the rack 134. Referring to fig. 2, 7 and 8, fig. 8 is a schematic view showing the overall structure of the idler shaft.
As shown in fig. 8, a groove 123 is formed in the idler shaft 120 outside each gear 122, and the groove wall of the groove 123 serves as a sliding stopper for constructing the stopper pair. Correspondingly, a strip-shaped annular guide rail 133 is arranged on the bracket 130 outside each rack 134, and the inner ring of the strip-shaped annular guide rail 133 is used as a guide part for constructing the limiting pair. Here, the strip-shaped annular guide rail 133 and the rack 134 are arranged in a slant manner in the same direction, and the extending direction of the main body of the strip-shaped annular guide rail 133 is substantially parallel to the direction of the main body of the straight rack 134, so as to achieve the function of guiding and limiting.
After the assembly is completed, the strip-shaped annular guide rail 133 on the bracket 130 is matched with the clamping grooves 123 at the two ends of the carrier roller shaft 120, and the inner ring of the guide rail 133 can be clamped into the clamping grooves 123. Thus, when the carrier roller shaft 120 rotates to engage the gear 122 at both ends thereof with the rack 134, the carrier roller shaft 120 can move along the direction of the guide rail 133, so as to ensure that the gear 122 and the rack 134 maintain a reliable engagement state, thereby improving the reliability of dynamic matching of the carrier roller shaft and the bracket.
Specifically, the included angles between the strip-shaped annular guide rail 133 and the rack 134 and the plane 131 in the middle of the bracket 130 can be about 40 degrees, and the strip-shaped annular guide rail has good transmission efficiency and actuation performance.
In addition, in this embodiment, the adapted strip-shaped annular guide rail 133 and the clamping groove 123 are disposed on the outer sides of the corresponding gear 122 and the corresponding rack 134, and it should be understood that the positional relationship shown in the drawing is a preferred illustration, and in fact, a design may be adopted in which the adapted strip-shaped annular guide rail 133 and the clamping groove 123 are disposed on the inner sides (not shown in the drawing) of the corresponding gear 122 and the corresponding rack 134, and the limiting pair can be constructed as well.
It should be noted that, the guiding portions disposed at both sides of the bracket 130 are disposed adjacent to the rack 134, the sliding limiting portions disposed at both axial ends of the roller shaft 120 are disposed adjacent to the gear 122, and it is within the scope of the application as long as the sliding limiting portions are slidably adapted to the guiding portions at the respective sides and can construct a limiting pair for limiting the detachment of the gear 122 from the rack 134.
As further shown in fig. 3 and 4, the roller body 110 includes an inner tube 113 and an outer shell 116 nested together, and a plurality of webs 114 fixedly disposed between the inner tube 113 and the outer shell 116 at circumferentially spaced intervals.
As shown in fig. 2, the carrier roller shaft 120 passes through the inner tube 113, the body diameter of the carrier roller shaft 120 is slightly smaller than the diameter of the inner tube 113, and the carrier roller shaft and the inner tube 113 are in clearance fit; and the carrier roller shaft 120 can be connected with the carrier roller body 110 through two unidirectional rotating bearings 121, the inner ring of the unidirectional bearing 121 is in interference fit with the carrier roller shaft 120, and the outer ring of the unidirectional bearing 121 is in interference fit with the carrier roller body 110, so that a unidirectional synchronous rotation fit relationship between the carrier roller shaft 120 and the carrier roller body 110 is formed.
In this embodiment, the overturning capturing element is an arc-shaped turning plate 111 with the curvature consistent with that of the outer casing 116, and as shown in fig. 3 and 4, corresponding to the four turning plates 111, four openings capable of accommodating the turning plates are formed on the outer casing 116, and the openings are approximately rectangular with the shape consistent with that of the turning plates. It will be appreciated that the number of circumferentially spaced apart flaps 111 can be configured according to the overall parameters of the pipe-and-belt machine to balance the capture reliability and reasonable control of processing costs.
Each turning plate (111) is rotationally connected with the inner wall of the outer shell 116 through a rotating shaft 112, the rotating shaft 112 is arranged in parallel with the carrier roller shaft 120, and the arc length of a first turning plate body 111-1 on one side of the rotating shaft 112 is larger than that of a second turning plate body 111-2 on the other side of the rotating shaft 112, so that the first turning plate body 111-1 is far away from the plate edge of the rotating shaft 116 to form a capturing end, and the body of the capturing end is rapidly thrown outwards under the action of centrifugal force formed by the reverse rotation of the carrier roller body 110. That is, the second flap body 111-2 of the flap moves inward, and the first flap body 111-1 of the flap will press the tubular conveyor belt 400 inward.
Preferably, the inner wall of the outer shell 116 may have a limiting portion corresponding to the first flap body 111-1, so as to limit the first flap body 111-1 to rotate to the radial inner side of the roller body 110, so as to further ensure the working reliability under normal operation. The specific structural form of the limiting part can be determined according to needs, in this embodiment, the inner edges of the openings of the outer housing 116 are respectively provided with a limiting plate 115, and the limiting plates 115 are specifically disposed at the inner edges of the openings opposite to the corresponding capturing ends, as shown in fig. 3, and circumferentially extend from the inner edges of the corresponding openings to form the limiting part.
As further shown in fig. 3, the fixed end of each web 114 with the outer housing 116 is configured to: relative to the rotating shaft 112, the first turning plate body 111-1 is positioned on the same side of the rotating shaft 112; and the body of the web 114 and the second flap body 111-2 rotated to the capturing position form a stop limit pair, please refer to fig. 4.
As can be seen from the working principle of the broken belt capturing device 100 according to the present embodiment, the support 130, the idler shaft 120 and the idler body 110 are one capturing force application group, and three groups are specifically disposed on each bracket 300 shown in fig. 3 at intervals along the circumferential direction of the conveyor belt 400.
Here, in order to achieve a comparatively ideal capturing effect, a plurality of capturing points should be arranged on the conveying line of the pipe belt machine, and 6 to 9 groups of capturing carrier rollers can be continuously arranged at each capturing point. Thereby realizing effective broken belt capturing. Of course, the actual number of the capturing force application groups can be configured according to the overall parameters of the pipe belt machine so as to balance the capturing reliability and reasonably control the processing cost.
In addition, in the state of use of the broken belt capturing device shown in fig. 1, the broken belt capturing device 100 is disposed on a bracket 300 of a carrier section frame. In order to improve the capturing effect when the pipe belt breaks, the broken belt capturing device 100 provided in this embodiment may be installed on the return section of the pipe belt machine as well, and please refer to fig. 9, which is a schematic diagram of another use state of the broken belt capturing device.
The motion flow of the broken belt capturing device according to the present embodiment is briefly described below:
when the pipe belt machine works normally, the unidirectional bearing 121 between the roller body 110 and the roller shaft 120 rotates normally, and at this time, the roller body 110 rotates freely relative to the roller shaft 120. Meanwhile, the flap 111 is pressed in the process of contacting with the conveyor belt 400, and the flap 111 is not lifted, so that the conveyor belt is not blocked. In this state, the broken belt catching device 100 functions as a common carrier roller set, and only supports the conveyor belt to maintain a circular tube shape. As shown in fig. 5.
When the pipe belt machine runs, belt breakage occurs, the tension of the conveyer belt suddenly disappears after the belt breakage, and the conveyer belt 400 starts to run in the opposite direction after the movement speed gradually drops to zero under the action of dead weight and the gravity of materials. The reverse running conveyor 400 drives the back roller body 110 in reverse. The one-way bearing 121 is in a non-return braking state at this time, and is fixedly connected with the carrier roller shaft 120 and the carrier roller body 110, and the carrier roller shaft 120 rotates reversely along with the carrier roller body 110.
When the roller shaft 120 rotates reversely, the gear 122 of the roller shaft is engaged with the rack 134 of the bracket 130, and the roller shaft 120 in this state moves along the direction of the strip-shaped annular rail 133 from the first end 1341 of the rack 134 to the second end 1342 of the rack 134, that is, toward the end of the strip-shaped annular rail 133, based on the engagement of the rail catch 123 of the roller shaft with the strip-shaped annular rail 133.
The flap 111 is thrown outward by centrifugal force generated by the reverse rotation of the roller body 110. Its second flap body 111-2 moves inward and the first flap body 111-1 will press the tubular conveyor 400 inward. At the same time, the roller shaft 120 drives the roller body 110 integrally to move in the distal direction along the guide rail 3, and the roller body 110 and the roller shaft 120 translate integrally toward the center of the tubular conveyor 400, thereby further pressing the tubular belt. As shown in fig. 6.
Besides the broken belt capturing device, the embodiment further provides a pipe belt machine, which specifically comprises a bearing section rack and a return section rack, wherein the bearing section rack and the return section rack are respectively provided with a bracket of a bearing carrier roller, the pipe belt machine further comprises the broken belt capturing device, and the bracket can be fixedly arranged on the bracket of the bearing section A rack and/or the return section B rack and is fixed on the opposite side of the bearing carrier roller of the bracket, as shown in the combination of fig. 1 and 9. It should be understood that other main functions of the pipe-line machine constitute a core point of the invention not in the present application, and can be implemented by those skilled in the art based on the prior art, so that the description thereof is omitted herein.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (8)
1. A broken belt capturing device is used for a pipe belt machine and is characterized by comprising a bracket, a roller shaft and a roller body;
the rack is used for being fixed at the side of a conveying belt of the pipe belt machine, racks which are obliquely arranged are respectively arranged at two sides of the rack, the rack is a first end relative to the far end of the conveying belt, and the rack is a second end relative to the near end of the conveying belt;
gears which are engaged with the racks and matched with the racks are fixedly arranged at the shaft ends of the two sides of the roller shaft;
the carrier roller body is sleeved on the carrier roller shaft and used for laminating and pressing the conveying belt; the carrier roller body is provided with a plurality of overturning capturing pieces which are circumferentially arranged on the outer peripheral body at intervals, each overturning capturing piece can be switched between a normal working position and a capturing working position relative to the body rotation of the carrier roller body, and the overturning capturing pieces are configured to: when the overturning capturing piece is positioned at a normal working position, the outer contour surface of the overturning capturing piece does not exceed the outer peripheral surface of the roller body; when the conveyer belt is positioned at the capturing working position, the capturing end of the overturning capturing piece rotates to the radial outer side of the carrier roller body so as to squeeze the conveyer belt to deform towards the center side of the conveyer belt; the carrier roller body comprises an inner pipe body, an outer shell and a plurality of webs which are fixedly arranged between the inner pipe body and the outer shell at intervals in the circumferential direction; the inner pipe body is sleeved on the roller shaft, and the inner pipe body and the roller shaft are in clearance fit; the overturning capturing piece is an arc-shaped turning plate with the same curvature as the outer shell, a plurality of openings capable of accommodating the turning plate are formed in the outer shell, and the turning plate is rotationally connected with the inner wall of the outer shell through a rotating shaft; the pivot with bearing roller axle parallel arrangement, just the arc length of the first board body that turns over of pivot one side is greater than the arc length of the second board body that turns over of pivot opposite side, the end formation of arresting is in the first board body that turns over is kept away from the board edge of pivot, the web with the stiff end of shell body, the configuration is: the first turning plate body is positioned on the same side of the rotating shaft relative to the rotating shaft; the body of the web plate and the second turning plate body rotating to the capturing working position can form a stop limit pair;
the roller shaft and the roller body can rotate in a unidirectional and synchronous way and are configured to: when the carrier roller body is driven to rotate along a first direction by forward displacement of the conveying belt, the carrier roller shaft and the carrier roller body do not synchronously rotate, the gear is meshed with the teeth at the first end of the rack, and the overturning capturing piece is in a normal working position; when the carrier roller body is driven to rotate along the second direction by the reverse displacement of the conveying belt, the carrier roller shaft and the carrier roller body synchronously rotate, the gear can be meshed with the rack in sequence to form a trend of tooth displacement towards the second end of the rack, and the overturning capturing piece is positioned at a capturing working position.
2. The broken belt capturing device according to claim 1, wherein guide portions are further provided on both sides of the bracket, respectively, the guide portions on the same side being disposed adjacent to the rack and being disposed obliquely in the same direction as the rack; the two side shaft ends of the carrier roller shaft are respectively provided with a sliding limiting part which is arranged adjacent to the gear, the sliding limiting parts are in sliding fit with the guiding parts on the corresponding sides, and a limiting pair which can limit the gear to be separated from the rack is formed between the sliding limiting parts.
3. The broken belt capturing device according to claim 2, wherein a strip-shaped annular guide rail is arranged on the support on the outer side of each rack, and the guide part is formed on an inner ring of the strip-shaped annular guide rail; and clamping grooves are formed in the roller shaft at the outer side of each gear, and the sliding limiting parts are formed in the groove walls of the clamping grooves.
4. The broken belt capturing device according to claim 1, wherein the inner wall of the outer housing has a limiting portion provided corresponding to the first flap body so as to limit the first flap body to rotate to a radially inner side of the carrier roller body.
5. A broken belt capturing device according to claim 4, wherein an inner edge of the opening opposite to the respective capturing end is provided with a stopper plate extending circumferentially from the inner edge of the opening to form the stopper portion.
6. A broken belt capturing device according to claim 1, wherein a one-way bearing is provided between the idler shaft and the idler body to form the one-way synchronous rotation.
7. The broken belt capture device according to claim 1, wherein the support, idler shafts and idler bodies are configured in at least three groups and are arranged at intervals along the circumference of the conveyor belt.
8. A pipe strap machine, including bearing section frame and return stroke section frame, just bear the carrier that has the carrier roller respectively in section frame and the return stroke section frame, its characterized in that still includes the broken string and catches device of any one of claims 1 to 7, wherein, the support is fixed to be set up bear section frame and/or return stroke section frame on the carrier roller on the support, and fix in the opposite side of carrier roller of carrier bracket.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111468923.6A CN114132716B (en) | 2021-12-03 | 2021-12-03 | Pipe belt machine and broken belt capturing device thereof |
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| CN202111468923.6A CN114132716B (en) | 2021-12-03 | 2021-12-03 | Pipe belt machine and broken belt capturing device thereof |
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| CN114132716B true CN114132716B (en) | 2024-03-08 |
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| CN117068628B (en) * | 2023-06-29 | 2024-04-05 | 象山光明输送机有限公司 | Broken belt protection device of pipe belt and pipe belt machine |
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| CN114132716A (en) | 2022-03-04 |
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