CN218177882U

CN218177882U - Light umbrella-shaped belt wheel narrow V-belt stepless speed changer

Info

Publication number: CN218177882U
Application number: CN202222745400.8U
Authority: CN
Inventors: 王倩倩; 胡永彪; 腊晓阳; 谭鹏; 侯玉杰; 黄霞
Original assignee: Changan University
Current assignee: Changan University
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2022-12-30
Anticipated expiration: 2032-10-18

Abstract

The utility model discloses a narrow V of lightweight umbelliform band pulley takes buncher relates to derailleur technical field, including the case seat, case seat top fixedly connected with bearing, input shaft and output shaft are installed through the bearing respectively to the top of case seat, the quantity of input shaft and output shaft is two, two the cover is equipped with gland nut two on the outer wall of input shaft and output shaft respectively. Replace traditional solid toper band pulley through setting up umbelliform band pulley, great weight that has alleviateed the derailleur, the derailleur structure is compacter, the lightweight effect is obvious, speed adjusting device adopts the combination of two speed adjusting rods and screw nut, form scissors formula translation speed governing mode, the working diameter size through adjusting umbelliform band pulley, realize the continuous variation of drive ratio, during the control speed governing, just can carry out the speed governing through turning handle, the speed governing is simple laborsaving, it compresses tightly to take the spring to compress tightly the mode, the replaceability is strong, be applicable to textile mill, light industry places such as electronic factory.

Description

Light umbrella-shaped belt pulley narrow V-belt continuously variable transmission

Technical Field

The utility model relates to a derailleur technical field especially relates to a narrow V of lightweight umbelliform band pulley takes continuously variable transmission.

Background

The belt type stepless speed reducer is widely applied in China, is distributed in daily life, such as food processing equipment, medical equipment, textile equipment, automobile, ship and other industries, and is an indispensable mechanical transmission device. At present, the belt type speed reducer is developed at home and abroad, the production model is solidified, the speed changer is single in type, most of the belt type speed reducers adopt the traditional solid metal conical disc belt wheel transmission speed changers, and the solid metal conical disc speed changers are mainly used in loading occasions such as automobiles, ships and the like.

The conventional belt type speed reducer has the following problems in use:

the problems of small power-weight ratio, low mechanical efficiency, heavy machine, high production cost and the like of the transmission caused by the use of the traditional belt type speed reducer in light-industry light-load occasions

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a narrow V of umbelliform band pulley takes continuously variable transmission of lightweight has solved the technical problem who proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a narrow V of lightweight umbelliform band pulley takes buncher, includes the case seat, case seat top fixedly connected with bearing, input shaft and output shaft are installed through the bearing respectively at the top of case seat, the quantity of input shaft and output shaft is two, two overlap respectively on the outer wall of input shaft and output shaft and be equipped with gland nut two, the position that just is located between gland nut two on the outer wall of input shaft and output shaft is provided with the V band pulley, the V band pulley includes outer umbelliform wheel and core umbelliform wheel, be provided with through the lid on the input shaft, the quantity of outer umbelliform wheel and core umbelliform wheel is two respectively, and intercrossing sets up between outer umbelliform wheel and the core umbelliform wheel, V type inslot line cover that forms between outer umbelliform wheel and the core umbelliform wheel is equipped with narrow V area, install pressure spring in the middle of two outer umbelliform wheels and the core umbelliform wheel, outer umbelliform wheel and the V both ends that umbelliform wheel intercrossing combination formed are installed gland nut one and gland nut two, keep away from on the input shaft, install through the stifle nut and install the speed governing end cover and fix the end cover and the speed adjusting lead screw, the fulcrum and the lead screw are provided with two fixed fulcrum respectively, the end cover and the speed adjusting lead screw are equipped with the speed adjusting screw.

Preferably, the speed regulating rod device comprises a first speed regulating rod and a second speed regulating rod, and the first speed regulating rod and the second speed regulating rod are respectively hinged with the screw nut.

Preferably, the first speed regulating rod and the second speed regulating rod are respectively provided with a small groove inside, and the top of the first compression nut and the top of the second compression nut penetrate through the small grooves.

Preferably, the outer umbrella-shaped wheel and the core umbrella-shaped wheel are respectively arranged on the input shaft and the output shaft in a spline connection mode, a positioning step is arranged in the middle of the belt wheel shaft, a groove is formed in the positioning step, one end of the compression spring is arranged in the groove, and the other end of the compression spring is attached to the inner sides of the outer umbrella-shaped wheel and the core umbrella-shaped wheel.

Preferably, pointers are arranged on the fulcrum rotating handle and the speed regulating handle and correspond to the first scale end cover and the second scale end cover respectively.

Compared with the prior art, the utility model provides a pair of narrow V of lightweight umbelliform band pulley takes continuously variable transmission has following beneficial effect:

the utility model provides a narrow V of lightweight umbelliform band pulley takes buncher, through setting up umbelliform band pulley and replacing the weight that traditional solid toper band pulley has greatly lightened the derailleur, reduced the use of material simultaneously, use in light load occasions such as light industry, it is more practical to laminate than solid toper band pulley derailleur, has stopped the big or small usefulness of solid toper band pulley derailleur, is applicable to light industry places such as textile mill, electron factory; the V belt wheel is formed by cross combination of the core umbrella-shaped wheel and the outer umbrella-shaped wheel, a triangular principle is formed, the structure is more stable and compact under the pressure of the narrow V belt, and the stability of the V belt wheel is enhanced. The speed regulation device selects mechanical operation type shear type translational symmetric speed regulation, only the handle needs to be held, speed regulation can be carried out by contrasting scales on the end cover, the operation is convenient and simple, meanwhile, the speed regulation time is shortened by symmetrically regulating the speed by the speed regulation rods on two sides, the speed regulation efficiency is more efficient, the speed regulation size and the initial tension pre-tightening size are equivalently converted onto a dial on the end cover, speed regulation can be carried out by only one common worker, narrow V-belt transmission is selected, the contact area between two sides of a V-belt and umbrella-shaped belt wheel ribs is larger in the purpose, and the transmission capacity is increased.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a perspective view of the overall structure of the present invention;

FIG. 2 is a perspective view of the umbrella-shaped V-belt pulley of the present invention;

fig. 3 is a top view of the structure of the present invention;

fig. 4 is a top view of the speed-adjusting lever device of the present invention for adjusting different states.

In the figure: 1. a box base; 2. an outer umbrella wheel; 3. a core umbrella wheel; 4. a transparent cover; 5. an input shaft; 6. a narrow V-band; 7. a compression spring; 8. a first compression nut; 9. a bearing; 10. covering the cover; 11. the fulcrum rotates the handle; 12. a speed-adjusting lever device; 1201. a first governor lever; 1202. a second governor lever; 13. a first graduated end cover; 14. a fulcrum screw; 15. an output shaft; 16. a speed-regulating handle; 17. a second compression nut; 18. a second end cover is graduated; 19. a lead screw nut; 20. speed governing lead screw.

Detailed Description

The first embodiment is as follows:

referring to fig. 1-4, the present invention provides a technical solution: a light-weight umbrella-shaped belt wheel narrow V-belt stepless speed changer comprises a box seat 1, wherein a bearing 9 is fixedly connected to the top of the box seat 1, an input shaft 5 and an output shaft 15 are respectively installed at the top of the box seat 1 through the bearing 9, the number of the input shaft 5 and the output shaft 15 is two, two compression nuts two 17 are respectively sleeved on the outer walls of the input shaft 5 and the output shaft 15, V-shaped belt wheels are arranged on the outer walls of the input shaft 5 and the output shaft 15 and between the compression nuts two 17, each V-shaped belt wheel comprises an outer umbrella-shaped wheel 2 and a core umbrella-shaped wheel 3, a transparent cover 4 is arranged on the input shaft 5, the number of the outer umbrella-shaped wheels 2 and the number of the core umbrella-shaped wheels 3 are respectively two, the outer umbrella-shaped wheels 2 and the core umbrella-shaped wheels 3 are arranged in a mutually crossed manner, two outer umbrella-shaped wheels 2 with certain inclination angles and the core umbrella-shaped wheels 3 are adopted to be crossed and combined to form the V-shaped belt wheel, A narrow V-shaped belt 6 is sleeved in a V-shaped groove formed between an outer umbrella-shaped wheel 2 and a core umbrella-shaped wheel 3, a compression spring 7 is installed between the two outer umbrella-shaped wheels 2 and the core umbrella-shaped wheel 3, a first compression nut 8 and a second compression nut 17 are installed at two ends of a V-shaped belt wheel formed by the cross combination of the outer umbrella-shaped wheel 2 and the core umbrella-shaped wheel 3, a blank cap 10 is arranged on an input shaft 5 far away from a transparent cover 4, a fulcrum lead screw 14 and a speed regulating lead screw 20 are installed on a box base 1 through bearings 9 respectively, a lead screw nut 19 is sleeved on the speed regulating lead screw 20, a first scale end cover 13 and a second scale end cover 18 are fixedly installed on the fulcrum lead screw 14 and the speed regulating lead screw 20 respectively, a fulcrum rotating handle 11 and a speed regulating handle 16 are arranged on one side of the first scale end cover 13 and one side of the second scale end cover 18 respectively, and a speed regulating rod device 12 is hinged to one side of the lead screw nut 19.

The speed regulating rod device 12 comprises a first speed regulating rod 1201 and a second speed regulating rod 1202, the first speed regulating rod 1201 and the second speed regulating rod 1202 are hinged to the screw nut 19 respectively, small grooves are formed in the first speed regulating rod 1201 and the second speed regulating rod 1202 respectively, and the tops of the first compression nut 8 and the second compression nut 17 penetrate through the small grooves.

Specifically, the governor link apparatus 12 forms a revolute pair with the lead screw nut 19 through a hinge screw, and meanwhile, the first governor link 1201 and the second governor link 1202 are provided with small grooves for allowing the governor link to perform a certain displacement, and the governor link has two degrees of freedom, rotation and translation.

The outer umbrella-shaped wheel 2 and the core umbrella-shaped wheel 3 are respectively arranged on the input shaft 5 and the output shaft 15 in a spline connection mode, the middle of the belt wheel shaft is provided with a positioning step, a groove is formed in the positioning step, one end of the compression spring 7 is arranged in the groove, and the other end of the compression spring is attached to the inner sides of the outer umbrella-shaped wheel 2 and the core umbrella-shaped wheel 3.

Specifically, the outer umbrella-shaped wheel 2 and the core umbrella-shaped wheel 3 are arranged on the shaft in a spline connection mode and can slide on the shaft, when the working diameter of the V belt wheel is controlled to be reduced through speed regulation, the two compression nuts II 17 on the outer sides of the two umbrella-shaped half wheels translate oppositely, the umbrella-shaped half wheels are pressed to overcome the spring force of the compression spring 7 to move oppositely, and therefore the working diameter of the V belt wheel is reduced.

Pointers are arranged on the fulcrum rotating handle 11 and the speed regulating handle 16 and respectively correspond to the first scale end cover 13 and the second scale end cover 18.

Specifically, the set pointers correspond to the scales when the fulcrum rotating handle 11 and the speed regulating handle 16 rotate respectively, so that the rotating angle can be conveniently observed.

The working principle is as follows:

when in use, firstly, as shown in fig. 3, the opening and closing degrees of the speed adjusting rods are different, the corresponding V belt wheel transmission ratios are different, the first speed adjusting rod 1201 and the second speed adjusting rod 1202 are parallel, the outer umbrella-shaped wheel 2 and the core umbrella-shaped wheel 3 are subjected to the same force, the spacing between the umbrella-shaped wheels inside the two V belt wheels is the same, and the working diameters of the two V belt wheels are the same, in fig. 4, the opening of the first left speed adjusting rod 1201 is large, the opening of the second right speed adjusting rod 1202 is small, the spacing between the outer umbrella-shaped wheel 2 and the core umbrella-shaped wheel 3 at the right end is reduced under the extrusion of the speed adjusting rods, so that the working diameter is reduced, and the spacing between the outer umbrella-shaped wheel 2 and the core umbrella-shaped wheel 3 at the left end is increased under the reset of the spring force of the hold-down spring 7, so that the working diameter is increased;

as shown in the top view of fig. 4, the normal operation of the belt pulleys is ensured by the cooperation of the second compression nut 17 and the compression spring 7, the two V-belt pulleys are respectively installed at the central positions of the input shaft 5 and the output shaft 15, the fulcrum screw 14 and the screw nut 19 are the same, the screw thread directions of the two ends of the screw are opposite, the two ends of the screw are respectively installed with one screw nut 19, the screw nuts 19 at the two ends of the screw translate inwards or outwards simultaneously during speed regulation, so that symmetrical speed regulation is realized, the first governor lever 1201 and the second governor lever 1202 form a revolute pair with the screw nuts 19 through hinge screws, and meanwhile, a small groove formed on the governor lever allows the governor lever to perform certain displacement, and the governor lever has two degrees of freedom, rotation and translation;

before speed regulation, initial tension setting and pre-tightening of belt transmission are carried out according to standard regulations, the fulcrum rotating handle 11 is rotated to rotate the pointer to a certain position to stop, then speed regulation is carried out by rotating the speed regulating handle 16, when the speed regulating handle 16 is rotated, the speed regulating rod device 12 is driven by the lead screw nut 19 to move in a scissor-like mode, the fulcrum lead screw 14 is taken as a fulcrum, the rotating speed of the output shaft 15 is reduced if needed, the speed regulating handle 16 is rotated to enable two nuts on the speed regulating lead screw 20 to move outwards at the same time, at the moment, the opening at the right end of the speed regulating rod device 12 is increased, the opening at the left end of the speed regulating rod device 12 is reduced, the working diameter of an output belt wheel is increased under the control of the speed regulating rod and the spring pressing device, the working diameter of the input belt wheel is reduced, and the process of increasing the rotating speed of the output shaft 15 is opposite to the process.

Claims

1. The utility model provides a narrow V area buncher of lightweight umbelliform band pulley, includes case seat (1), its characterized in that: the box comprises a box base (1), wherein a bearing (9) is fixedly connected to the top of the box base (1), an input shaft (5) and an output shaft (15) are respectively installed at the top of the box base (1) through the bearing (9), the number of the input shaft (5) and the output shaft (15) is two, two gland nuts (17) are respectively sleeved on the outer walls of the input shaft (5) and the output shaft (15), V belt pulleys are respectively arranged on the outer walls of the input shaft (5) and the output shaft (15) and between the gland nuts (17), each V belt pulley comprises an outer umbrella-shaped wheel (2) and an umbrella-shaped wheel (3), a transparent cover (4) is arranged on the input shaft (5), the number of the outer umbrella-shaped wheels (2) and the umbrella-shaped wheels (3) is two, the outer umbrella-shaped wheels (2) and the umbrella-shaped wheels (3) are mutually crossed, a narrow V belt (6) is sleeved on the V belt pulleys (2) formed between the outer umbrella-shaped wheels (2) and the umbrella-shaped wheels (3), a middle umbrella-shaped wheel (2) and an umbrella-shaped wheel (3) are provided with a gland nut (8), and a gland nut (10) which are crossed with a combination of the umbrella-shaped wheel (2) and a middle umbrella-shaped wheel (2) which are provided with a gland nut (10), install fulcrum lead screw (14) and speed governing lead screw (20) through bearing (9) respectively on block (1), the cover is equipped with screw nut (19) on speed governing lead screw (20), on fulcrum lead screw (14) and speed governing lead screw (20) respectively fixed mounting have scale end cover one (13) and scale end cover two (18), one side of scale end cover one (13) and scale end cover two (18) is provided with fulcrum turning handle (11) and speed governing handle (16) respectively, one side of screw nut (19) articulates there is speed governing pole device (12).

2. The light-weight umbrella pulley narrow V-belt continuously variable transmission of claim 1, wherein: the speed regulating rod device (12) comprises a first speed regulating rod (1201) and a second speed regulating rod (1202), and the first speed regulating rod (1201) and the second speed regulating rod (1202) are hinged to the screw nut (19) respectively.

3. The light-weight umbrella pulley narrow V-belt continuously variable transmission of claim 2, characterized in that: small grooves are formed in the first speed adjusting rod (1201) and the second speed adjusting rod (1202) respectively, and the tops of the first compression nut (8) and the second compression nut (17) penetrate through the small grooves.

4. The lightweight umbrella pulley narrow V-belt continuously variable transmission of claim 1, characterized in that: the outer umbrella-shaped wheel (2) and the core umbrella-shaped wheel (3) are respectively installed on the input shaft (5) and the output shaft (15) in a spline connection mode, a positioning step is arranged in the middle of the belt wheel shaft, a groove is formed in the positioning step, one end of the compression spring (7) is installed in the groove, and the other end of the compression spring is attached to the inner sides of the outer umbrella-shaped wheel (2) and the core umbrella-shaped wheel (3).

5. The lightweight umbrella pulley narrow V-belt continuously variable transmission of claim 1, characterized in that: pointers are arranged on the fulcrum rotating handle (11) and the speed regulating handle (16), and correspond to the first scale end cover (13) and the second scale end cover (18) respectively.