CN215928278U - Chain type conical disc reducing stepless speed change tensioning device - Google Patents

Abstract

The utility model discloses a chain type conical disc variable-diameter stepless speed change tensioning device in the technical field of stepless transmissions, which comprises a Z-shaped frame plate and a Z-shaped frame side plate, wherein the Z-shaped frame side plate is arranged on the inner side of the Z-shaped frame plate, a bearing seat is arranged on one side inside the Z-shaped frame side plate, and springs are uniformly arranged between the Z-shaped frame side plate and the bearing seat to keep the tensioning elasticity.

Description

Chain type conical disc reducing stepless speed change tensioning device

Technical Field

The utility model relates to the technical field of continuously variable transmissions, in particular to a chain type conical disc variable-diameter continuously variable tensioning device.

Background

In the traditional conical disc variable diameter belt transmission stepless speed change mode, the load transmission is realized by the friction force between the conical disc and the side surface of the transmission belt, theoretically, the load transmission can reach infinity as long as the positive pressure generating the friction force is large enough and the transmission belt can bear the positive pressure. However, the actual situation is influenced by various factors such as materials, structures, manufacturing and the like, and the bearing capacity of the stepless speed change is greatly influenced in practical application.

The stepless speed change mode of the centrifugal movable teeth replaces a friction transmission mode by a chain tooth meshing transmission mode, so that the stepless speed change for realizing heavy load transmission becomes possible. The key of the centrifugal movable tooth stepless speed change lies in the centrifugal movable tooth chain transmission technology. In the process of speed change of the tooth-shaped transmission chain, the conical disc is changed in diameter, and the meshing pitch circle of the chain transmission is changed accordingly. This continuously variable transmission technique has different requirements on the tensioning of the toothed chain system at start-up and during the transmission. This places special demands on the tensioning system of the chain drive. Based on the above, the utility model designs a chain type conical disc reducing stepless speed change tensioning device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a chain type conical disc reducing stepless speed change tensioning device, which can enable a movable disc to generate axial displacement to meet the tensioning requirement of a transmission chain in the speed change process by utilizing a variable-rigidity special elastic tensioning system according to the tensioning characteristic requirement of a toothed chain in the transmission process. The tensioning device can also compensate the influence of the wear of the chain pendulum shaft on the tensioning force.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a chain conical disk reducing infinitely variable speed overspeed device tensioner, includes Z word frame plate and Z word frame curb plate, the inboard at Z word frame plate is installed to the Z word frame curb plate, inside one side of Z word frame curb plate is provided with the bearing frame, the equipartition sets up the spring in order to keep tensioning elasticity between Z word frame curb plate and the bearing frame, the installation carries out the pivoted bearing to moving conical disk in the bearing frame, the bearing cup joints in moving the conical disk outside, move the internal connection of conical disk and have the axle, through another fixed conical disk of hub connection, it moves the tooth storehouse to move to form between conical disk and the fixed conical disk, move and set up the chain in the tooth storehouse to through moving the clamping-force extrusion chain between conical disk and the fixed conical disk, drive the outer end lateral part and the bottom of chain through setting up moving the inside slidable tooth shape frame of conical disk and moving the tooth gleitbretter.

Preferably, the Z-shaped frame plate and the Z-shaped frame side plate are fixedly assembled through screws.

Preferably, the limiting plate is arranged outside the Z-shaped frame side plate, the limiting plate can limit the space between the bearing seat and the Z-shaped frame side plate, and the gap is kept within the range of the tensioning amount.

Preferably, a pin hole is concentrically formed between the bearing seat and the Z-shaped frame side plate, and the transverse adjustment stability of the bearing seat is kept by inserting a pin.

Preferably, the bearing outer part is pre-installed and fastened through a hole retainer ring and a shaft retainer ring.

Preferably, one side of the fixed cone disc is further provided with a speed measuring disc, and the speed measuring disc is installed through a set screw.

Compared with the prior art, the utility model has the beneficial effects that: the springs are uniformly distributed between the Z-shaped frame side plate and the bearing seat to keep the tensioning elasticity, and the spacing plate enables the maintaining clearance to be within the tensioning quantity range, so that the tensioning requirement of the centrifugal movable tooth stepless speed changer in the whole working process can be met, and necessary tensioning compensation can be performed on tensioning change caused by abrasion of the chain swing shaft.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the structure of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

the device comprises a 1-Z-shaped frame plate, 2-screws, 3-pins, 4-bearings, 5-hole check rings, 6-shaft check rings, 7-bearings, 9-bearing seats, 10-Z-shaped frame side plates, 11-springs, 12-limiting plates, 13-movable conical discs, 14-toothed frames, 16-movable tooth bins, 17-movable tooth sliding sheets, 18-chains, 19-fixed conical discs, 20-speed measuring discs and 21-fastening screws.

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.

Referring to fig. 1, the present invention provides a technical solution: a chain type conical disc variable-diameter stepless speed change tensioning device comprises a Z-shaped frame plate 1 and a Z-shaped frame side plate 10, wherein the Z-shaped frame side plate 10 is installed on the inner side of the Z-shaped frame plate 1, and the Z-shaped frame plate 1 and the Z-shaped frame side plate 10 are fixedly assembled through screws 2; a bearing seat 9 is arranged on one side of the inner part of the Z-shaped frame side plate 10, a pin hole is concentrically formed between the bearing seat 9 and the Z-shaped frame side plate 10, and the transverse adjustment stability of the Z-shaped frame side plate is kept through an inserted pin 3. Springs 11 are uniformly arranged between the Z-shaped frame side plate 10 and the bearing seat 9 to keep the tensioning elasticity, a limiting plate 12 is arranged outside the Z-shaped frame side plate 10, the limiting plate 12 can limit the space between the bearing seat 9 and the Z-shaped frame side plate 10, and the gap is kept within the tensioning amount range;

a bearing 4 for rotating a movable conical disc 13 is installed in a bearing seat 9, and the outside of the bearing 4 is pre-installed and fastened through a hole check ring 5 and a shaft check ring 6. Bearing 4 cup joints in moving the conical disk 13 outside, moves the internal connection of conical disk 13 and has axle 7, connects another fixed conical disk 19 through axle 7, moves and forms between conical disk 13 and the fixed conical disk 19 and move tooth storehouse 16, moves and sets up chain 18 in the tooth storehouse 16 to through moving clamping force extrusion chain 18 between conical disk 13 and the fixed conical disk 19, drive outer end lateral part and the bottom of chain 18 through setting up at the inside slidable tooth shape frame 14 of moving conical disk 13 and moving tooth gleitbretter 17.

Wherein, one side of the fixed cone disc 19 is also provided with a speed measuring disc 20, and the speed measuring disc 20 is installed through a set screw 21.

The device is a fixed shaft type centrifugal moving tooth stepless speed changer, is realized in a mechanical direct transmission mode at the beginning of starting, and can generate a meshing transmission effect only when the centrifugal moving teeth are thrown out under the action of the rotating speed and enter the space between the sprocket teeth. The centrifugal moving teeth in the driving conical disc fixed on the driving shaft are thrown out by the rotation of the driving shaft. When the driven conical disc is started, the driven conical disc is static, and centrifugal moving teeth in the driven conical disc cannot be thrown out to participate in work. At this time, the friction force between the chain 18 and the two conical disks, which is generated by the tension force of the toothed chain 18, is required to transmit the rotation of the driving conical disk with power to the driven conical disk, so as to achieve synchronous rotation, and the centrifugal movable teeth in the driven conical disk and the centrifugal movable teeth in the driving conical disk are thrown out simultaneously, thereby completing the preparation of meshing transmission. When the gear shift is started, the load transmission is realized by the engagement transmission of the centrifugal movable teeth and the chain teeth 18. The tension only needs to ensure the tension required by normal chain transmission (ensuring wrap angle and eliminating vibration)

The specific action flow is as follows: the uniformly distributed springs (6 springs) transmit tensioning power to the Z-shaped frame side plate 10 and the bearing block 9; the upper Z-shaped frame plate 1 and the lower Z-shaped frame plate 1 are rigidly connected with the Z-shaped frame side plate 10 of the driving cone disc group and the driven cone disc group to form a rigid frame. The axial movement of the frame along the shaft 7 is a gear shifting process. The tensile force acting on the bearing block 9 is transmitted to the driving conical disc 13 through the bearing 4; so that the chain moves along the axial direction of the shaft 7 relative to the fixed cone disc 19, and the chain 18 can be tensioned at the right time. The pin 3 restricts relative rotation between the Z-shaped frame side plate 10 and the bearing seat 9, and a stopper plate 12 mounted on the Z-shaped frame side plate 10 restricts the maximum displacement amount of the brake cone disc 13 to h. The device not only can meet the tensioning requirement of the centrifugal movable tooth stepless speed changer in the whole working process, but also can perform necessary tensioning compensation on the tensioning change caused by the abrasion of the chain swing shaft.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims (6)

1. The utility model provides a chain conical disk reducing infinitely variable tensioning device which characterized in that: comprises a Z-shaped frame plate (1) and a Z-shaped frame side plate (10), wherein the Z-shaped frame side plate (10) is arranged on the inner side of the Z-shaped frame plate (1), a bearing seat (9) is arranged on one side of the inner part of the Z-shaped frame side plate (10), springs (11) are uniformly distributed between the Z-shaped frame side plate (10) and the bearing seat (9) to keep tensioning elasticity, a bearing (4) for rotating a movable conical disc (13) is arranged in the bearing seat (9), the bearing (4) is sleeved on the outer side of the movable conical disc (13), the inner part of the movable conical disc (13) is connected with a shaft (7), the movable conical disc (13) is connected with another fixed conical disc (19) through the shaft (7), a movable tooth bin (16) is formed between the movable conical disc (13) and the fixed conical disc (19), a chain (18) is arranged in the movable tooth bin (16), and the chain (18) is extruded through the clamping force between the movable conical disc (13) and the fixed conical disc (19), the side part and the bottom part of the outer end of the chain (18) are driven by a tooth-shaped frame (14) and a movable tooth slide sheet (17) which are arranged in the movable cone disc (13) and can slide.

2. The chain type conical disc reducing stepless speed change tensioning device as claimed in claim 1, wherein: the Z-shaped frame plate (1) and the Z-shaped frame side plate (10) are fixedly assembled through screws (2).

3. The chain type conical disc reducing stepless speed change tensioning device as claimed in claim 1, wherein: and a limiting plate (12) is arranged outside the Z-shaped frame side plate (10), the limiting plate (12) can limit the space between the bearing seat (9) and the Z-shaped frame side plate (10), and the gap is kept within a tensioning amount range.

4. The chain type conical disc reducing stepless speed change tensioning device as claimed in claim 1, wherein: a pin hole is concentrically formed between the bearing seat (9) and the Z-shaped frame side plate (10), and the transverse adjustment stability of the bearing seat is kept by inserting a pin (3).

5. The chain type conical disc reducing stepless speed change tensioning device as claimed in claim 1, wherein: the outer part of the bearing (4) is pre-installed and fastened through a hole retainer ring (5) and a shaft retainer ring (6).

6. The chain type conical disc reducing stepless speed change tensioning device as claimed in claim 1, wherein: and a speed measuring disc (20) is further arranged on one side of the fixed cone disc (19), and the speed measuring disc (20) is installed through a set screw (21).

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