阅读说明：本技术 一种无级变速系统 (Stepless speed change system ) 是由 毛臣健 张甫均 于 2021-09-26 设计创作，主要内容包括：本发明提供一种无级变速系统,涉及无级变速技术领域。该一种无级变速系统,包括防护外壳,所述防护外壳内端包括从动带轮和主动带轮,所述从动带轮和主动带轮外壁上套设有传动带,所述主动带轮内端固定套接有驱动轴,所述驱动轴上一侧分别转动套接有第一锥形轮、第一主动推轮和第一从动推轮,所述驱动轴上另一侧分别转动套接有第二锥形轮、第二主动推轮和第二从动推轮,所述第一锥形轮和第二锥形轮与防护外壳内壁之间分别固定连接有第一液压系统和第二液压系统。本发明提供一种无级变速系统,该变速系统整体结构简单易于调节,且运行稳定,寿命长,制造成本低。(The invention provides a stepless speed change system, and relates to the technical field of stepless speed change. This stepless speed change system, including protective housing, protective housing is inner including driven pulleys and driving pulley, the cover is equipped with the drive belt on driven pulleys and the driving pulley outer wall, the fixed cover in driving pulley has connect the drive shaft, one side rotates respectively and has cup jointed first cone pulley, first initiative push wheel and first driven push wheel in the drive shaft, the opposite side rotates respectively and has cup jointed second cone pulley, second initiative push wheel and second driven push wheel in the drive shaft, first cone pulley and second cone pulley and protective housing inner wall between first hydraulic system and the second hydraulic system of fixedly connected with respectively. The invention provides a stepless speed change system which is simple in overall structure, easy to adjust, stable in operation, long in service life and low in manufacturing cost.)

1. A continuously variable transmission system comprising a protective casing (1), characterized in that: the inner end of the protective shell (1) comprises a driven belt wheel (2) and a driving belt wheel (3), a transmission belt (4) is sleeved on the outer walls of the driven belt wheel (2) and the driving belt wheel (3), a driving shaft (5) is fixedly sleeved at the inner end of the driving belt wheel (3), a first conical wheel (7), a first driving push wheel (8) and a first driven push wheel (10) are respectively rotatably sleeved at one side of the driving shaft (5), a second conical wheel (701), a second driving push wheel (801) and a second driven push wheel (1001) are respectively rotatably sleeved at the other side of the driving shaft (5), and a first hydraulic system (6) and a second hydraulic system (601) are respectively and fixedly connected between the first conical wheel (7) and the second conical wheel (701) and the inner wall of the protective shell (1);

driving pulley (3) are including bearing cover (13), a plurality of expansion telescopic link (14), a plurality of connecting piece (15) and a plurality of arc gear (16), and are a plurality of expansion telescopic link (14) fixed connection is on bearing cover (13) outer wall, and a plurality of connecting piece (15) fixed connection is served in a plurality of expansion telescopic link (14) work, and is a plurality of arc gear (16) fixed connection is kept away from on expansion telescopic link (14) one side outer wall in a plurality of connecting piece (15).

2. A continuously variable transmission system as claimed in claim 1, wherein: expansion telescopic link (14) include movable rod (1401) and dead lever (1402), dead lever (1402) upper end is fixed has seted up activity groove (1403), dead lever (1402) roof and fixedly connected with screens piece (1404) are run through to movable rod (1401) lower extreme, spacing groove (1405) have all been fixed to have seted up in activity groove (1403) both sides, two equal fixedly connected with gag lever post (1406) between the inner wall about gag lever post (1405), the equal fixedly connected with stopper (1407) in screens piece (1404) both sides, two stopper (1407) slide respectively and cup joint on two gag lever posts (1406) outer walls.

3. A continuously variable transmission system as claimed in claim 1, wherein: a first damping spring (11) and a first damping pin (12) are fixedly connected between the first driving push wheel (8) and the first driven push wheel (10) respectively, and a second damping spring (1101) and a second damping pin (1201) are fixedly connected between the second driving push wheel (801) and the second driven push wheel (1001) respectively.

4. A continuously variable transmission system as claimed in claim 1, wherein: the first driving push wheel (8) is fixedly provided with a first tapered groove (9) at one side close to the first tapered wheel (7), and the second driving push wheel (801) is fixedly provided with a second tapered groove (901) at one side close to the second tapered wheel (701).

5. A continuously variable transmission system as claimed in claim 1, wherein: the two ends of the driving shaft (5) are rotatably arranged on the inner wall of the protective shell (1) and can slide relative to the protective shell (1).

6. A continuously variable transmission system as claimed in claim 1, wherein: every connecting piece (15) both sides all articulate and are provided with connecting rod (17), two connecting rod (17) keep away from connecting piece (15) one end and articulate respectively on first driven pushing wheel (10) and the relative lateral wall of second driven pushing wheel (1001).

7. A continuously variable transmission system as claimed in claim 1, wherein: and hydraulic cylinders (18) are hinged to the two sides of the driven belt wheel (2) and the driving belt wheel (3) through rotating shafts.

8. A continuously variable transmission system as claimed in claim 1, wherein: the driven belt wheel (2) is rotatably connected between the inner walls of the two sides of the protective shell (1) through a rotating shaft.

Technical Field

The invention relates to the technical field of stepless speed change, in particular to a stepless speed change system.

Background

A Continuously Variable Transmission (CVT) refers to a transmission system that can continuously obtain any transmission ratio in a transmission range. The inside of the transmission case is not provided with a gear transmission structure of a traditional gearbox, but two transmission wheels with changeable diameters are sleeved on the middle sleeve to transmit. The basic principle is that two ends of a transmission belt are wound on a conical belt wheel, and the outer diameter of the belt wheel is steplessly changed according to the oil pressure. When starting, the diameter of the driving belt wheel is changed into the maximum diameter, and the diameter of the driven belt wheel is changed into the minimum diameter, so that a higher transmission ratio is realized. With the increase of the speed and the change of the signals of the sensors, the computer control system judges the control oil pressure for controlling the two belt wheels and finally changes the continuous change of the diameters of the belt wheels, thereby achieving the stepless speed change in the whole speed change process.

According to the speed change mechanism, the diameter of the driving belt wheel is increased mainly through the control expansion of the plurality of hydraulic systems, the cost is increased by adopting the plurality of hydraulic systems, radial force can be generated on the action rod of the oil cylinder during working, and abrasion is easily caused after a long time.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a stepless speed change system, which solves the problems that the prior device needs a plurality of hydraulic systems to work cooperatively, the cost is increased, and the abrasion of an oil cylinder is influenced after the device works for a long time.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a stepless speed change system comprises a protective shell, wherein the inner end of the protective shell comprises a driven belt pulley and a driving belt pulley, a driving belt is sleeved on the outer walls of the driven belt pulley and the driving belt pulley, a driving shaft is fixedly sleeved at the inner end of the driving belt pulley, a first conical wheel, a first driving push wheel and a first driven push wheel are respectively rotatably sleeved at one side of the driving shaft, a second conical wheel, a second driving push wheel and a second driven push wheel are respectively rotatably sleeved at the other side of the driving shaft, and a first hydraulic system and a second hydraulic system are respectively and fixedly connected between the first conical wheel and the second conical wheel and the inner wall of the protective shell;

the driving pulley is including holding and pressing cover, a plurality of expansion telescopic link, a plurality of connecting piece and a plurality of arc gear, and is a plurality of expansion telescopic link fixed connection is held on holding and pressing the cover outer wall, and a plurality of connecting piece fixed connection is served at a plurality of expansion telescopic link works, and is a plurality of arc gear fixed connection is kept away from on the outer wall of expansion telescopic link one side at a plurality of connecting pieces.

Preferably, the expansion telescopic link includes movable rod and dead lever, the fixed movable groove that has seted up in dead lever upper end, the movable rod lower extreme runs through dead lever roof and fixedly connected with screens piece, the equal fixed spacing groove of having seted up in activity groove both sides, two equal fixedly connected with gag lever post between the inner wall about the gag lever post, the equal fixedly connected with stopper in screens piece both sides, two the stopper slides respectively and cup joints on two gag lever post outer walls.

Preferably, a first damping spring and a first damping pin are fixedly connected between the first driving push wheel and the first driven push wheel respectively, and a second damping spring and a second damping pin are fixedly connected between the second driving push wheel and the second driven push wheel respectively.

Preferably, a first tapered groove is fixedly formed in one side, close to the first tapered wheel, of the first driving push wheel, and a second tapered groove is fixedly formed in one side, close to the second tapered wheel, of the second driving push wheel.

Preferably, the two ends of the driving shaft are rotatably arranged on the inner wall of the protective shell and can be arranged in a sliding mode relative to the protective shell.

Preferably, each connecting piece both sides all articulate and are provided with the connecting rod, two the connecting rod is kept away from connecting piece one end and is articulated respectively on a relative lateral wall of first driven pushing wheel and second driven pushing wheel.

Preferably, the two sides of the driven belt wheel and the driving belt wheel are hinged with hydraulic cylinders through rotating shafts.

Preferably, the driven belt wheel is rotatably connected between the inner walls of the two sides of the protective shell through a rotating shaft.

The working principle is as follows: when this kind of infinitely variable system uses, when driving pulley expands, utilize hydraulic system work to promote the motion of cone pulley, and then block advance the initiative push wheel in, under the effect of damping spring and damper pin, the initiative push wheel promotes the motion of driven push wheel, and then drives the expansion telescopic link motion under the effect of connecting rod, the arc gear through connecting piece fixed connection is pushed up, thereby adjust driving pulley's diameter, utilize the pneumatic cylinder to adjust driving pulley and driven pulley's interval simultaneously, reach the variable speed purpose.

(III) advantageous effects

The invention provides a stepless speed change system. The method has the following beneficial effects:

1. the invention provides a stepless speed change system, which is characterized in that an expansion telescopic rod is arranged to replace a traditional oil cylinder, so that the diameter change of a driving belt wheel does not need to be controlled by the cooperation of a plurality of oil cylinders, and the cost can be effectively reduced.

2. The invention provides a stepless speed change system, which is characterized in that a hydraulic system is arranged to push from two sides to the middle of the device, so that an expansion telescopic rod is driven to expand and contract under the action of a connecting rod, the diameter change of a driving belt wheel is realized, the problem of radial force caused by the traditional method that the expansion telescopic rod is directly vertical to an axis to expand and contract is effectively solved, the wear rate of the device is reduced, and the service life of core parts of the device is prolonged.

3. The invention provides a stepless speed change system, which is characterized in that a driving push wheel is arranged, a conical groove is formed in the driving push wheel, the conical groove is matched with a conical wheel to carry out clamping rotation, the conical wheel can be quickly clamped into the conical groove when the diameter of a driving belt wheel is adjusted, the conical wheel cannot rotate along with the driving push wheel, and the structural stability is improved.

4. The invention provides a stepless speed change system, which is characterized in that a damping spring and a damping pin are arranged between a driving push wheel and a driven push wheel, so that a driving belt wheel has a damping force when being expanded, and can stably work.

Drawings

FIG. 1 is a schematic top view of the drive pulley of the present invention shown expanded;

FIG. 2 is a schematic top view of the driving pulley according to the present invention;

FIG. 3 is a side view of the structure of the present invention;

FIG. 4 is a schematic view of the structure of the present invention viewed from the lower side in another state;

FIG. 5 is a schematic view of the internal structure of the expanding and contracting rod of the present invention;

FIG. 6 is a schematic view of a first driving wheel structure according to the present invention.

Wherein, 1, a protective shell; 2. a driven pulley; 3. a driving pulley; 4. a transmission belt; 5. a drive shaft; 6. a first hydraulic system; 601. a second hydraulic system; 7. a first conical wheel; 701. a second conical wheel; 8. a first driving push wheel; 801. a second driving push wheel; 9. a first tapered slot; 901. a second tapered slot; 10. a first driven pusher wheel; 1001. a second driven pusher wheel; 11. a first damping spring; 1101. a second damping spring; 12. a first damper pin; 1201. a second damper pin; 13. a pressure bearing sleeve; 14. expanding the telescopic rod; 1401. a movable rod; 1402. fixing the rod; 1403. a movable groove; 1404. a bit block; 1405. a limiting groove; 1406. a limiting rod; 1407. a limiting block; 15. a connecting member; 16. an arc gear; 17. a connecting rod; 18. and a hydraulic cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1-6, an embodiment of the present invention provides a continuously variable transmission system, which includes a protective housing 1, an inner end of the protective housing 1 includes a driven pulley 2 and a driving pulley 3, outer walls of the driven pulley 2 and the driving pulley 3 are sleeved with a driving belt 4, an inner end of the driving pulley 3 is fixedly sleeved with a driving shaft 5, one side of the driving shaft 5 is rotatably sleeved with a first tapered wheel 7, a first driving push wheel 8 and a first driven push wheel 10, the other side of the driving shaft 5 is rotatably sleeved with a second tapered wheel 701, a second driving push wheel 801 and a second driven push wheel 1001, and a first hydraulic system 6 and a second hydraulic system 601 are fixedly connected between the first tapered wheel 7 and the second tapered wheel 701 and an inner wall of the protective housing 1.

Driving pulley 3 is including bearing cover 13, a plurality of expansion telescopic links 14, a plurality of connecting piece 15 and a plurality of arc gear 16, and a plurality of expansion telescopic links 14 fixed connection are on bearing cover 13 outer wall, and a plurality of connecting piece 15 fixed connection are served at a plurality of expansion telescopic links 14 work, and a plurality of arc gear 16 fixed connection are kept away from expansion telescopic link 14 one side outer wall at a plurality of connecting pieces 15.

Expansion telescopic link 14 includes movable rod 1401 and dead lever 1402, dead lever 1402 upper end is fixed has seted up activity groove 1403, movable rod 1401 lower extreme runs through dead lever 1402 roof and fixedly connected with screens piece 1404, activity groove 1403 both sides have all fixedly seted up spacing groove 1405, equal fixedly connected with gag lever post 1406 between the upper and lower inner wall of two spacing grooves 1405, the equal fixedly connected with stopper 1407 in screens piece 1404 both sides, two stoppers 1407 slide respectively and cup joint on two gag lever post 1406 outer walls, restrict the longest flexible distance of movable rod 1401 through screens piece 1404, slide on gag lever post 1406 through stopper 1407, improve the concertina movement stability of movable rod 1401.

The first damping spring 11 and the first damping pin 12 are fixedly connected between the first driving push wheel 8 and the first driven push wheel 10 respectively, the second damping spring 1101 and the second damping pin 1201 are fixedly connected between the second driving push wheel 801 and the second driven push wheel 1001 respectively, the first damping spring 11 and the second damping spring 1101 mainly play a role in buffering, the first damping pin 12 and the second damping pin 1201 are mainly used for connecting the first driving push wheel 8, the first driven push wheel 10, the second driving push wheel 801 and the second driven push wheel 1001 respectively, so that one side drives the other side to rotate when rotating, and meanwhile, the damping is assisted, therefore, the first damping pin 12 and the second damping pin 1201 need to be arranged in plurality according to conditions, and the running stability of the device is improved.

The first driving push wheel 8 is close to one side of the first conical wheel 7 and is fixedly provided with a first conical groove 9, the second driving push wheel 801 is close to one side of the second conical wheel 701 and is fixedly provided with a second conical groove 901, the first conical wheel 7 is clamped into the first conical groove 9, and the second conical wheel 701 is clamped into the second conical groove 901 to realize relative rotation of the first conical wheel and the second conical wheel, so that clamping is accurate, and the pushing effect is good.

The setting is all rotated on protective housing 1 inner wall in drive shaft 5 both ends, and can slide the setting relative to protective housing 1, mainly when the relative driven pulleys 2 interval of pneumatic cylinder 18 telescopic adjustment driving pulley 3, needs drive shaft 5 to correspond and slides, and its concrete connection is known technology, and it is no longer repeated here.

Every connecting piece 15 both sides all articulate and are provided with connecting rod 17, and two connecting rods 17 keep away from connecting piece 15 one end and articulate respectively on first driven pushing wheel 10 and the relative lateral wall of second driven pushing wheel 1001, and connecting rod 17 mainly plays and can correspond when first driven pushing wheel 10 and the relative motion of second driven pushing wheel 1001 and drive connecting piece 15 and carry out elevating movement.

The two sides of the driven belt wheel 2 and the driving belt wheel 3 are both hinged with a hydraulic cylinder 18 through a rotating shaft, and the hydraulic cylinder is used for adjusting the distance between the driving belt wheel 3 and the driven belt wheel 2.

The driven belt wheel 2 is rotatably connected between the inner walls of the two sides of the protective shell 1 through a rotating shaft.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.