CN113942787B - Combined type sprocket overspeed device tensioner of variable diameter of lifting machine - Google Patents
Combined type sprocket overspeed device tensioner of variable diameter of lifting machine Download PDFInfo
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- CN113942787B CN113942787B CN202111044371.6A CN202111044371A CN113942787B CN 113942787 B CN113942787 B CN 113942787B CN 202111044371 A CN202111044371 A CN 202111044371A CN 113942787 B CN113942787 B CN 113942787B
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- chain wheel
- composite
- chain
- supporting
- connecting rod
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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
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/12—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface comprising a series of individual load-carriers fixed, or normally fixed, relative to traction element
- B65G17/126—Bucket elevators
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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
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/30—Details; Auxiliary devices
- B65G17/38—Chains or like traction elements; Connections between traction elements and load-carriers
- B65G17/42—Attaching load carriers to traction elements
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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
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
- B65G23/02—Belt- or chain-engaging elements
- B65G23/04—Drums, rollers, or wheels
- B65G23/06—Drums, rollers, or wheels with projections engaging abutments on belts or chains, e.g. sprocket wheels
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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
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
- B65G23/44—Belt or chain tensioning arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention relates to a diameter-variable composite chain wheel tensioning device of a hoister. The two composite chain wheels are arranged in a concentric and opposite mode, the two chain wheel discs are arranged in a concentric and opposite mode in a fitting mode, and the upper portion of the inner side face of each chain wheel disc is provided with three chain wheel grooves; two sides of each composite chain wheel are respectively provided with a supporting nut; the six support connecting rod assemblies are divided into two groups of support connecting rod groups by taking three support connecting rod groups as a group, and each chain wheel disc passes through the other chain wheel disc through one group of support connecting rod groups and then is connected with one support nut far away from the chain wheel disc; the small chain wheel is movably arranged in the chain wheel groove, the outer end of the sliding block support can move along the radial direction of the chain wheel disc to drive the small chain wheel to move synchronously, and the upper side of the small chain wheel is meshed with a corresponding chain. The chain transmission chain wheel of the elevator can adjust the diameter, can solve the problem of chain tensioning in chain transmission work, ensures effective meshing during transmission, reduces abrasion, prolongs the service life of the machine, and improves production efficiency.
Description
Technical Field
The invention relates to a tensioning device of a hoister, in particular to a combined type chain wheel tensioning device with a variable diameter of the hoister.
Background
The bucket elevator is a kind of transport machinery which continuously transports the powder material vertically upwards. In a traditional elevator, a bucket elevator with an asynchronous motor arranged on a motor and a speed reducer matched with the asynchronous motor is widely used. However, the speed of the asynchronous motor cannot be adjusted during use, the average efficiency is low, the load of a power grid is large, meanwhile, the motor with large volume and large weight is arranged above the elevator together with the reducer device, great inconvenience is brought to assembly, use and maintenance of the elevator, and the requirement on the bearing of the elevator body is too high.
The problems existing in the prior art can be solved by adopting the underlying permanent magnet motor hoister, but the underlying permanent magnet motor hoister has higher requirements on the tensioning of a chain wheel and a chain, when the tensioning stroke is less than 1/5 of the specified length, and when the underlying chain wheel is effectively meshed too little, the problems of insufficient power transmission, aggravation of the abrasion of the chain wheel, reduction of mechanical efficiency, even chain sliding and the like exist, and the tensioning stroke needs to be recovered by manually cutting off a section of length of the traction part, so that the possibility that the hopper is scratched by the bottom of a feed inlet is eliminated, and the normal working tension of the traction part is kept.
Disclosure of Invention
In order to solve the problems of the background art, an adjustable tensioner is needed to meet the needs. The invention discloses a diameter-variable composite chain wheel tensioning device of a hoister, and aims to solve the tensioning problem of a chain type underlying permanent magnet motor hoister. The problem that the traditional overhead asynchronous motor is large in size, inconvenient to install, low in speed, incapable of adjusting efficiency and the like is solved.
The technical scheme adopted by the invention is as follows:
the chain wheel assembly comprises a main shaft, two composite chain wheels and two chains, wherein the two composite chain wheels are concentrically and oppositely arranged, a gap is reserved between the two composite chain wheels, the upper sides of the two composite chain wheels are respectively meshed with one respective chain, the main shaft is arranged in a penetrating manner in a through hole in the centers of the two composite chain wheels, and the main shaft rotates around the axis of the main shaft and is immovable;
each composite chain wheel comprises two chain wheel discs, two supporting nuts and six supporting connecting rod assemblies, through holes are formed in the centers of the two chain wheel discs, the size of each through hole is larger than the diameter of the main shaft, and the main shafts penetrate through the through holes of the two chain wheel discs and are not in contact with each other; the two chain wheel discs are concentrically arranged in a facing manner, the upper part of the inner side surface of each chain wheel disc is provided with three chain wheel grooves at intervals along the circumferential direction, and each chain wheel groove extends outwards to the outer circumferential edge of the chain wheel disc along the radial direction of the chain wheel disc; each composite chain wheel is provided with a support nut at two sides along the axial direction of the main shaft, and the support nuts are sleeved on the main shaft through threads;
the six support connecting rod assemblies are divided into two groups of support connecting rod groups by taking three support connecting rod assemblies as a group, and the support connecting rod assemblies are arranged at intervals in the circumferential direction in a staggered mode, so that the structures are not interfered; each chain wheel disc passes through the other chain wheel disc through a group of support connecting rod groups and then is connected with one support nut far away from the chain wheel disc; the number of the support connecting rod assemblies is consistent with that of the chain wheel grooves, one end of each support connecting rod assembly is arranged in each chain wheel groove, and the other end of each support connecting rod assembly is hinged to the support nut; each supporting connecting rod component comprises a supporting rod, a small chain wheel and a sliding block support, wherein the small chain wheel is movably installed in a chain wheel groove, a sliding block support guide rail which is arranged in the radial direction is arranged in the chain wheel groove, the sliding block support is embedded in the sliding block support guide rail in a sliding mode, the inner end of the supporting rod is hinged to a supporting nut, the inner end of the supporting rod can rotate around the supporting nut in the radial direction of the chain wheel disc, the outer end of the supporting rod penetrates through the other chain wheel disc of the chain wheel disc where the supporting rod is located and is hinged to a hinge structure which is formed in the top face of the inner end of the sliding block support, the outer end of the supporting rod can rotate around the hinge structure of the sliding block support in the radial direction of the chain wheel disc, the middle of the small chain wheel is hinged to the outer end of the sliding block support, the outer end of the sliding block support can be embedded in the sliding block support guide rail in the radial direction in a sliding mode, the outer end of the sliding block support can move in the radial direction of the chain wheel disc to drive the small chain wheel to move synchronously, the upper side of the small chain wheel is meshed with a corresponding chain, the chain wheel groove ensures that the small chain wheel cannot interfere with the chain wheel when the small chain wheel in the radial direction, the chain wheel, the structure is more compact, the number of teeth meshed with the small chain wheel is increased, and effective support is formed.
The spiral lines of the two supporting nuts on the two sides of the composite chain wheel are same in the opposite spiral direction, so that the moving directions of the supporting nuts on the two sides of the composite chain wheel on the main shaft are opposite, the supporting nuts move towards or back to the circle center direction of the composite chain wheel along the main shaft simultaneously during moving, and the spiral lines of the two supporting nuts between the two composite chain wheels are same in the opposite spiral direction.
The symmetrical axis of each chain wheel groove is positioned on the radial straight line of the chain wheel disc, the included angle formed by the symmetrical axis of the chain wheel groove arranged on the same chain wheel disc and the circle center of the chain wheel disc is formed by two adjacent chain wheel grooves arranged on different chain wheel discs, and the included angle formed by the symmetrical axis of the chain wheel groove arranged on the different chain wheel discs and the circle center of the chain wheel disc is formed by two adjacent chain wheel grooves.
The chain wheel disc is provided with a radially arranged supporting rod channel for supporting a supporting rod of the connecting rod assembly to penetrate through, and the supporting rod channel is inwards communicated with a through hole in the center of the chain wheel disc; the inner side groove wall of the slide block bracket guide rail close to the center of the chain wheel disc extends towards the center of the chain wheel disc to form a radial slide block bracket limiting boss, the slide block bracket limiting boss is not contacted with the main shaft, the slide block bracket can slide in the slide block bracket guide rail in the radial direction, the rear end of the slide block bracket is propped in the slide block bracket limiting boss, so that the small chain wheel is not contacted with the chain wheel groove to generate interference, and the sliding block bracket limiting small chain wheel enables the composite chain wheel to have the minimum diameter.
In the operation process, the composite chain wheel is fixed when the main shaft is rotated, the main shaft is matched with the supporting nuts, the main shaft rotates in one direction of the clockwise direction and the anticlockwise direction, the supporting nuts on the two sides of the composite chain wheel drive the through holes which face the center of the composite chain wheel to approach through thread transmission, the supporting nuts push the supporting rod to move outwards along the radial direction of the composite chain wheel, the supporting rod pushes the small chain wheel to move outwards along the radial direction of the composite chain wheel, the sliding block support pushes the small chain wheel to move outwards along a sliding block support guide rail in a chain wheel groove, the actual action diameter of the composite chain wheel is changed until the hinged structure of the sliding block support props against the upper part of a supporting rod channel, at the moment, the small chain wheel is exposed out of the upper part of the composite chain wheel to the maximum extent, and the composite chain wheel reaches the maximum action diameter; the main shaft rotates around the direction opposite to the previous direction, the supporting nuts on the two sides of the composite chain wheel are driven by the threads to move towards the direction far away from the through hole of the composite chain wheel, the supporting nuts pull the supporting rod and the sliding block support, and then the small chain wheel is pulled to move inwards along the guide rail of the sliding block support in the chain wheel groove until the rear end of the sliding block support is propped against the limiting boss of the sliding block support, and the composite chain wheel reaches the minimum acting diameter.
The composite chain wheel mounting structure comprises a main shaft, a main shaft and a plurality of composite chain wheels, and is characterized by further comprising an elevator body, positioning bolts and a flange plate, wherein the flange plate is fixed on the elevator body through the positioning bolts through at least one fixing hole formed in the periphery of the flange plate, the two composite chain wheels are located inside the elevator body, the lower part of each composite chain wheel is provided with a positioning hole, the positioning bolts penetrate through the positioning holes to fix the composite chain wheels inside the elevator body, the composite chain wheels are guaranteed not to rotate, the composite chain wheels and the flange plate are concentric, and the main shaft penetrates through a center hole of the flange plate through a bearing to be mounted and supported.
The chain conveyer is characterized by further comprising a plurality of hoppers, wherein the hoppers are uniformly distributed and fixed on the two chains at intervals, each hopper is fixed on the two chains, and the hopper openings face the advancing direction of the chains.
The permanent magnet motor is arranged outside the elevator body and connected with a driving sprocket arranged below the elevator body through a coupler, and the driving sprocket is in transmission connection with the composite sprocket through a chain. In the implementation process, the permanent magnet motor drives the driving chain wheel to rotate as power output, the composite chain wheel rotates as the driven chain wheel, and then the chain is driven to rotate, so that the hopper on the chain is moved to transport goods.
The invention has the beneficial effects that:
the chain transmission chain wheel diameter adjusting device realizes the adjustment of the chain transmission chain wheel diameter in the hoister, the chain wheel diameter is conveniently and quickly adjusted, the chain length can be adapted to the length change of a chain, the problem of chain tensioning in the chain transmission work can be solved, the effective meshing is ensured during transmission, the abrasion is reduced, the service life of a machine is prolonged, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic view of the composite sprocket tensioning device of the present invention;
FIG. 2 is a schematic structural view of the composite sprocket of the present invention;
FIG. 3 is a schematic view of the internal construction of the composite sprocket of the present invention;
FIG. 4 is a half cross-sectional view of the composite sprocket construction of the present invention;
FIG. 5 is a side elevational view of the composite sprocket of the present invention in a separated configuration;
FIG. 6 is a schematic view of the sprocket plate configuration of the present invention;
FIG. 7-a is a schematic view of the composite sprocket of the present invention operating at its smallest diameter;
FIG. 7-b is a schematic view of the composite sprocket of the present invention operating at its largest diameter;
in the figure: 1. the elevator comprises an elevator body, 2 parts of a positioning bolt, 3 parts of a main shaft, 4 parts of a flange plate, 5 parts of a composite chain wheel, 5-1 parts of a chain wheel plate, 5-2 parts of a support nut, 5-3 parts of a support rod, 5-4 parts of a small chain wheel, 5-5 parts of a slide block support, 6 parts of a chain, 7 parts of a hopper.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the device comprises an elevator body 1, positioning bolts 2, a main shaft 3, a flange plate 4, two composite chain wheels 5, two chains 6 and a plurality of hoppers 7, wherein the flange plate 4 is fixed on the elevator body 1 by the positioning bolts 2 through at least one fixing hole formed in the periphery of the flange plate 4, the two composite chain wheels 5 are both positioned in the elevator body 1, a positioning hole is formed in the lower part of each composite chain wheel 5, the positioning bolts 2 penetrate through the positioning holes to fix the composite chain wheels 5 in the elevator body 1, the composite chain wheels 5 are ensured not to rotate, the composite chain wheels 5 are concentric with the flange plate 4, and the main shaft 3 penetrates through a center hole of the flange plate 4 through a bearing to be installed and supported; the two composite chain wheels 5 are arranged in a concentric and opposite mode, an interval is reserved between the two composite chain wheels 5, the upper sides of the two composite chain wheels 5 are respectively meshed with one chain 6, the main shaft 3 is arranged in a penetrating mode in a through hole in the centers of the two composite chain wheels 5, and the main shaft 3 rotates around the axis of the main shaft and cannot move; a plurality of hoppers 7 are fixed on two chains 6 at intervals, each hopper 7 is fixed on two chains 6, and openings of the hoppers 7 face the advancing direction of the chains 6.
As shown in fig. 2 and 3, each composite sprocket 5 comprises two sprocket discs 5-1, two support nuts 5-2 and six support link assemblies, through holes are formed in the centers of the two sprocket discs 5-1, the size of each through hole is larger than the diameter of the main shaft 3, and the main shaft 3 penetrates through the through holes of the two sprocket discs 5-1 and is not in contact with the through holes; the two chain wheel discs 5-1 are concentrically arranged oppositely and in a fit manner, the upper part of the inner side surface of each chain wheel disc 5-1 is provided with three chain wheel grooves at intervals along the circumferential direction, each chain wheel groove extends outwards to the outer circumferential edge of the chain wheel disc 5-1 along the radial direction of the chain wheel disc 5-1, the symmetry axis of each chain wheel groove is positioned on the radial straight line of the chain wheel disc 5-1, the included angle formed by the symmetry axis of two adjacent chain wheel grooves formed in the same chain wheel disc 5-1 and the circle center of the chain wheel disc 5-1 is 36 degrees, and the included angle formed by the symmetry axis of two adjacent chain wheel grooves formed in different chain wheel discs 5-1 and the circle center of the chain wheel disc 5-1 is 18 degrees; each composite chain wheel 5 is provided with a support nut 5-2 at two sides along the axial direction of the main shaft 3, and the support nuts 5-2 are sleeved on the main shaft 3 through threads;
the six support connecting rod assemblies are divided into two groups of support connecting rod groups by taking three support connecting rod assemblies as a group, and the support connecting rod assemblies are arranged at intervals in the circumferential direction in a staggered mode, so that the structures are not interfered; each chain wheel disc 5-1 penetrates through the other chain wheel disc 5-1 through a group of supporting connecting rod groups and then is connected with one supporting nut 5-2 far away from the chain wheel disc 5-1; the number of the support connecting rod assemblies is consistent with that of the chain wheel grooves, one end of each support connecting rod assembly is arranged in each chain wheel groove, and the other end of each support connecting rod assembly is hinged with a support nut 5-2; each supporting connecting rod component comprises a supporting rod 5-3, a small chain wheel 5-4 and a sliding block support 5-5, the small chain wheel 5-4 is movably arranged in a chain wheel groove, a sliding block support guide rail which is arranged in the chain wheel groove in a radial direction is arranged in the chain wheel groove, the sliding block support 5-5 is embedded in the sliding block support guide rail in a sliding way, the inner end of the supporting rod 5-3 is hinged with a supporting nut 5-2, the inner end of the supporting rod 5-3 can rotate around the supporting nut 5-2 along the radial direction of a chain wheel disc 5-1, the outer end of the supporting rod 5-3 penetrates through the other chain wheel disc 5-1 of the chain wheel disc 5-1 and is hinged with a hinged structure arranged on the top surface of the inner end of the sliding block support 5-5, the outer end of the supporting rod 5-3 can rotate around the hinge structure of the sliding block support 5-5 along the radial direction of the chain wheel disc 5-1, the middle part of the small chain wheel 5-4 is hinged to the outer end of the sliding block support 5-5, and the outer end of the sliding block support 5-5 can be embedded in a sliding block support guide rail in a radially sliding mode, so that the outer end of the sliding block support 5-5 can move along the radial direction of the chain wheel disc 5-1 to drive the small chain wheel 5-4 to move synchronously, the upper side of the small chain wheel 5-4 is meshed with a corresponding chain 6, and a chain wheel groove ensures that the small chain wheel 5-4 cannot interfere with the chain wheel disc 5-1 when moving along the radial direction, so that the structure is more compact, the number of teeth meshed between all the small chain wheels 5-4 and the chain 6 is increased, and effective support is formed.
As shown in fig. 4, the helical lines of the two support nuts 5-2 on both sides of the composite sprocket 5 have the same pitch in opposite directions, so that the support nuts 5-2 on both sides of the composite sprocket 5 move in opposite directions on the main shaft 3, move along the main shaft 3 toward or away from the center of the composite sprocket 5 at the same time, and the helical lines of the two support nuts 5-2 between the two composite sprockets 5 have the same pitch in opposite directions.
As shown in fig. 5 and 6, the sprocket wheel disc 5-1 is provided with radially arranged support rod channels for supporting the support rods 5-3 of the connecting rod assembly to pass through, and the support rod channels are communicated with the through holes in the center of the sprocket wheel disc 5-1 inwards; a radial sliding block support limiting boss is formed by extending the inner side groove wall of the sliding block support guide rail close to the center of the chain wheel disc 5-1 towards the center of the chain wheel disc 5-1, the sliding block support limiting boss is not contacted with the main shaft 3, the sliding block support 5-5 can slide in the sliding block support guide rail in the radial direction, the rear end of the sliding block support 5-5 is propped in the sliding block support limiting boss, so that the small chain wheel 5-4 is not contacted with the chain wheel groove to generate interference, and at the moment, the sliding block support 5-5 limits the small chain wheel 5-4 to enable the composite chain wheel 5 to have the minimum diameter.
The specific implementation process is as follows:
the method is characterized in that a permanent magnet motor is arranged outside a hoister body 1 and is connected with a driving sprocket arranged below the hoister body 1 through a coupler, the driving sprocket is in transmission connection with a composite sprocket 5 through a chain 6, the permanent magnet motor is used as power output to drive the driving sprocket to rotate, the composite sprocket 5 is used as a driven sprocket to rotate along with the driving sprocket, and further drive the chain 6 to rotate, so that a hopper 5 on the chain 6 moves to transport goods, in the operation process, the composite sprocket 5 is fixed when a main shaft 3 is rotated, the main shaft 3 is matched with supporting nuts 5-2, the main shaft 3 rotates in one of clockwise and counterclockwise directions, the supporting nuts 5-2 on two sides of the composite sprocket 5 drive through thread transmission to approach through holes which are all towards the center of the composite sprocket 5, the supporting nuts 5-2 push supporting rods 5-3 to move outwards along the radial direction of the composite sprocket 5, the supporting rods 5-3 push the composite sprocket 5-5 to move outwards along the radial direction of the composite sprocket 5, the composite sprocket 5-5 push the composite sprocket 5-5, the composite sprocket 5-4 push the composite sprocket 5 to move outwards along a sliding block support guide rail in a chain groove, the actual acting diameter of the composite sprocket 5 is changed until the composite sprocket 5-5 abuts against the upper portion of a hinged structure, the composite sprocket 5-5, the composite sprocket 5, the upper portion, the composite sprocket 5 is exposed to the maximum limit, and the maximum diameter of the composite sprocket 5-4, and the composite sprocket 5-5 b, and the maximum diameter is shown in the maximum diameter, and the composite sprocket 5 b shown in the maximum diameter, and the maximum diameter shown in the composite sprocket 5-4 b shown in the figure;
as shown in figure 7-a, the main shaft 3 rotates in the opposite direction, the support nuts 5-2 on both sides of the composite chain wheel 5 are driven by the thread transmission to move towards the direction far away from the through hole of the composite chain wheel 5, the support nuts 5-2 pull the support rods 5-3 and the slide block supports 5-5, and further pull the small chain wheels 5-4 to move inwards along the slide block support guide rails in the chain wheel grooves until the rear ends of the slide block supports 5-5 are propped in the slide block support limiting bosses, and the composite chain wheel 5 reaches the minimum acting diameter.
Claims (7)
1. The utility model provides a combined type sprocket overspeed device tensioner of variable diameter of lifting machine which characterized in that: the chain wheel transmission mechanism comprises a main shaft (3), two composite chain wheels (5) and two chains (6), wherein the two composite chain wheels (5) are concentrically arranged right opposite to each other, the upper sides of the two composite chain wheels (5) are respectively meshed with the respective chains (6), and the main shaft (3) is arranged in a penetrating manner in a through hole in the centers of the two composite chain wheels (5); each composite chain wheel (5) comprises two chain wheel discs (5-1), two supporting nuts (5-2) and six supporting connecting rod assemblies, through holes are formed in the centers of the two chain wheel discs (5-1), the size of each through hole is larger than the diameter of the main shaft (3), and the main shaft (3) penetrates through the through holes of the two chain wheel discs (5-1) and is not in contact with the through holes; the two chain wheel discs (5-1) are concentrically arranged in a facing manner, the upper part of the inner side surface of each chain wheel disc (5-1) is uniformly provided with three chain wheel grooves at intervals along the circumferential direction, and each chain wheel groove extends towards the outer peripheral edge of the chain wheel disc (5-1) along the radial direction of the chain wheel disc (5-1); each composite chain wheel (5) is provided with a support nut (5-2) at two sides along the axial direction of the main shaft (3), and the support nuts (5-2) are sleeved on the main shaft (3) through threads; the six support connecting rod assemblies are divided into two groups of support connecting rod groups by taking three support connecting rod assemblies as a group, and the support connecting rod assemblies are arranged at intervals in the circumferential direction in a staggered manner; each chain wheel disc (5-1) passes through the other chain wheel disc (5-1) through a group of supporting connecting rod group and then is connected with one supporting nut (5-2) far away from the chain wheel disc; the number of the supporting connecting rod assemblies is consistent with that of the chain wheel grooves, one end of each supporting connecting rod assembly is arranged in each chain wheel groove, and the other end of each supporting connecting rod assembly is hinged with a supporting nut (5-2);
each supporting connecting rod component comprises a small chain wheel (5-4), the small chain wheel (5-4) is movably arranged in a chain wheel groove, and the upper side of the small chain wheel (5-4) is meshed with a corresponding chain (6);
the spiral thread turning directions of the two supporting nuts (5-2) at the two sides of the composite chain wheel (5) are the same, and the spiral thread turning directions of the two supporting nuts (5-2) between the two composite chain wheels (5) are the same.
2. The variable diameter composite chain wheel tensioning device for the hoisting machine as set forth in claim 1, wherein: each supporting connecting rod component also comprises a supporting rod (5-3) and a sliding block support (5-5), a sliding block support guide rail which is arranged in a radial direction is arranged in the chain wheel groove, the sliding block support (5-5) is embedded in the sliding block support guide rail in a sliding mode, the inner end of the supporting rod (5-3) is hinged to the supporting nut (5-2), the outer end of the supporting rod (5-3) is hinged to a hinge structure which is formed in the top face of the inner end of the sliding block support (5-5), the middle of the small chain wheel (5-4) is hinged to the outer end of the sliding block support (5-5), and the outer end of the sliding block support (5-5) can be embedded in the sliding block support guide rail in a radial sliding mode, so that the outer end of the sliding block support (5-5) can move in the radial direction of the chain wheel disc (5-1) to drive the small chain wheel (5-4) to move synchronously.
3. The variable diameter composite sprocket tensioning device for hoists as set forth in claim 1, wherein: the symmetrical axis of each chain wheel groove is positioned on the radial straight line of the chain wheel disc (5-1), the included angle formed by the symmetrical axis of two adjacent chain wheel grooves formed in the same chain wheel disc (5-1) and the circle center of the chain wheel disc (5-1) is 36 degrees, and the included angle formed by the symmetrical axis of two adjacent chain wheel grooves formed in different chain wheel discs (5-1) and the circle center of the chain wheel disc (5-1) is 18 degrees.
4. The variable diameter composite sprocket tensioning device for hoists as set forth in claim 1, wherein: the chain wheel disc (5-1) is provided with a radially arranged supporting rod channel for supporting a supporting rod (5-3) of the connecting rod assembly to penetrate through, and the supporting rod channel is communicated with a through hole in the center of the chain wheel disc (5-1) inwards; the inner side groove wall of the slide block bracket guide rail close to the center of the chain wheel disc (5-1) extends towards the center of the chain wheel disc (5-1) to form a radial slide block bracket limiting boss, the slide block bracket limiting boss is not contacted with the main shaft (3), and the rear end of the slide block bracket (5-5) is propped in the slide block bracket limiting boss.
5. The variable diameter composite sprocket tensioning device for hoists as set forth in claim 1, wherein: still include lifting machine fuselage (1), positioning bolt (2) and ring flange (4), at least one fixed orifices that ring flange (4) were seted up through self periphery is fixed on lifting machine fuselage (1) by positioning bolt (2), two composite sprocket (5) all be located lifting machine fuselage (1) inside, the locating hole is all seted up to every composite sprocket (5) lower part, positioning bolt (2) pass the locating hole and are fixed in inside lifting machine fuselage (1) composite sprocket (5), composite sprocket (5) and ring flange (4) are concentric, main shaft (3) pass ring flange (4) centre bore through the bearing and support with the installation.
6. The variable diameter composite chain wheel tensioning device for the hoisting machine as set forth in claim 1, wherein: still include hopper (7), a plurality of hopper (7) equipartition interval is fixed on two chains (6), and every hopper (7) all are fixed in on two chains (6), and hopper (7) mouth is towards chain (6) advancing direction.
7. The variable diameter composite sprocket tensioning device for elevators as set forth in claim 5, wherein: the elevator is characterized in that a permanent magnet motor is arranged outside the elevator body (1), the permanent magnet motor is connected with a driving sprocket arranged below the elevator body (1) through a coupler, and the driving sprocket is in transmission connection with a composite sprocket (5) through a chain (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111044371.6A CN113942787B (en) | 2021-09-07 | 2021-09-07 | Combined type sprocket overspeed device tensioner of variable diameter of lifting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111044371.6A CN113942787B (en) | 2021-09-07 | 2021-09-07 | Combined type sprocket overspeed device tensioner of variable diameter of lifting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113942787A CN113942787A (en) | 2022-01-18 |
| CN113942787B true CN113942787B (en) | 2023-02-10 |
Family
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Family Applications (1)
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| CN202111044371.6A Active CN113942787B (en) | 2021-09-07 | 2021-09-07 | Combined type sprocket overspeed device tensioner of variable diameter of lifting machine |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85204059U (en) * | 1985-09-29 | 1986-10-29 | 郎柏林 | Out gearing mechanism on bicycle |
| CN2183328Y (en) * | 1994-02-04 | 1994-11-23 | 许永明 | Automatic stepless speed-changing chain guard of bicycle |
| CN2203954Y (en) * | 1994-08-22 | 1995-07-26 | 吕力更 | Automatically diameter-changeable chain wheel of bicycle |
| WO1998011364A1 (en) * | 1996-09-09 | 1998-03-19 | Enrico Nino | A stepless speed change gear |
| KR20020029044A (en) * | 2002-03-28 | 2002-04-17 | 최준호 | Automatic continuously variable transmission using the tension change of the chains |
| CN102062196A (en) * | 2009-06-02 | 2011-05-18 | 杨鲁川 | Equivalent diameter adjustable chain wheel device, stepless speed change device and power system |
| CN203255336U (en) * | 2013-05-23 | 2013-10-30 | 昆明学院 | Stepless speed change device for bicycle |
| CN208169454U (en) * | 2018-02-27 | 2018-11-30 | 徐继伟 | A kind of interim tensioning apparatus of mechanical drive chain wheel |
-
2021
- 2021-09-07 CN CN202111044371.6A patent/CN113942787B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85204059U (en) * | 1985-09-29 | 1986-10-29 | 郎柏林 | Out gearing mechanism on bicycle |
| CN2183328Y (en) * | 1994-02-04 | 1994-11-23 | 许永明 | Automatic stepless speed-changing chain guard of bicycle |
| CN2203954Y (en) * | 1994-08-22 | 1995-07-26 | 吕力更 | Automatically diameter-changeable chain wheel of bicycle |
| WO1998011364A1 (en) * | 1996-09-09 | 1998-03-19 | Enrico Nino | A stepless speed change gear |
| KR20020029044A (en) * | 2002-03-28 | 2002-04-17 | 최준호 | Automatic continuously variable transmission using the tension change of the chains |
| CN102062196A (en) * | 2009-06-02 | 2011-05-18 | 杨鲁川 | Equivalent diameter adjustable chain wheel device, stepless speed change device and power system |
| CN203255336U (en) * | 2013-05-23 | 2013-10-30 | 昆明学院 | Stepless speed change device for bicycle |
| CN208169454U (en) * | 2018-02-27 | 2018-11-30 | 徐继伟 | A kind of interim tensioning apparatus of mechanical drive chain wheel |
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| Publication number | Publication date |
|---|---|
| CN113942787A (en) | 2022-01-18 |
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