CN220791954U - Modularized assembly type variable speed drive belt mechanism - Google Patents

Abstract

The utility model discloses a modularized assembled variable speed drive belt mechanism, which comprises a drive belt mechanism consisting of two belt wheels respectively comprising a driving wheel and a driven wheel and a drive belt, wherein the driving wheel is a reducing mechanism; the reducing mechanism is matched and driven with the driving belt through at least three arc-shaped contact parts which are distributed in an annular array mode; two degrees of freedom exist in the reducing mechanism, one degree of freedom is used for being matched with an external power piece to be transmitted to the transmission belt, and the other degree of freedom is used for synchronously adjusting the circular outer diameter formed by each arc-shaped contact part; the utility model is of modularized design as a whole, realizes the functions of center distance adjustment and parametrization by means of selective assembly, realizes the transmission function of the transmission belt in a non-stop state by means of pure mechanical cooperation, can realize self variable transmission without depending on an external mechanism, and effectively meets the actual and application requirements thereof.

Description

Modularized assembly type variable speed drive belt mechanism

Technical Field

The utility model relates to the technical field of transmission belts, in particular to a modularized assembled variable speed transmission belt mechanism.

Background

Belt drives generally refer to a drive mode with a belt assembly, a relatively common form of mechanical drive; the belt is used as a middle interference piece, and the surface friction force between the belt and the belt wheel is used for transmitting the motion;

From the practical point of view, the variable-speed motion of the transmission belt is usually realized by adopting a variable-speed motor or a common motor in cooperation with a gearbox, and the design of the whole transmission belt is redundant; if the modular design can be carried out from the transmission belt mechanism, the variable speed transmission can be carried out, the variable speed transmission device can assist workers in reducing the design task amount when being applied to actual nonstandard assembly occasions, can directly complete the work demands in a form of model selection confirmation, and can effectively reduce the maintenance, assembly level transportation management and other costs of the mechanism after standardized design.

For this purpose, a modular assembled variable speed drive belt mechanism is proposed.

Disclosure of utility model

In view of the foregoing, it is desirable to provide a modular assembled variable speed drive belt mechanism that solves or mitigates the technical problems of the prior art, and at least provides a useful choice;

The technical scheme of the embodiment of the utility model is realized as follows: a modularized assembly type variable speed drive belt mechanism comprises a drive belt mechanism consisting of two belt wheel matched drive belts respectively comprising a driving wheel and a driven wheel, wherein the driving wheel is a reducing mechanism; the reducing mechanism is matched and driven with the driving belt through at least three arc-shaped contact parts which are distributed in an annular array mode;

Two degrees of freedom exist in the reducing mechanism, one degree of freedom is used for being matched with an external power piece to be transmitted to the transmission belt, and the other degree of freedom is used for synchronously adjusting the circular outer diameter formed by each arc-shaped contact part;

based on the above embodiment, the variable speed transmission is realized by changing the form of the outer diameter dimension.

Wherein in one embodiment: the reducing mechanism comprises a shell, hinge claws corresponding to the arc-shaped contact parts in number and a transmission disc; one end of the shell is fixedly connected with the transmission disc, and one end of each hinge claw is arranged on the outer surface of the transmission disc in a hinged mode and is integrally distributed in an annular array; the outer surface of the hinge claw is fixedly connected with the arc-shaped contact part; the degree of freedom for synchronously adjusting the circular outer diameter formed by each arc-shaped contact part is a linear degree of freedom, and the degree of freedom is matched with the transmission disc.

Based on the embodiment, the hinge claw is adapted to synchronously rotate, so that the arc-shaped contact part can be driven to integrally change the diameter to realize the speed change function.

Wherein in one embodiment: the reducing mechanism further comprises a screw rod and a fixing piece;

The outer surface of the fixing piece is rotationally connected with the transmission disc through a bearing, and the outer surface of the fixing piece and the transmission disc are not in direct contact; the outer surface of the screw rod is in threaded fit with the fixing piece, the linear degree of freedom is generated by the screw rod, and the head of the screw rod is in fit connection with the transmission disc through a bearing;

based on the embodiment, the screw rod rotates to drive the transmission disc to adjust the position, so that the linear degree of freedom is realized; in the implementation process, the bearing is fixed, and does not rotate along with the transmission disc, so that the output linear degree of freedom of the transmission disc can be controlled by matching with an external power piece

Wherein in one embodiment: the reducing mechanism further comprises a torsion spring and a spring; one end of the torsion spring is fixedly connected to the inner side wall of the shell, and the other end of the torsion spring is fixedly connected to the outer surface of the hinge claw; one end and the other end of the spring respectively prop against the fixing piece and the shell.

Based on the embodiment, through the movement of the linear degree of freedom, the torsion spring drives the hinge claw to realize the corresponding driving operation function.

Wherein in one embodiment: the reducing mechanism further comprises a transmission shaft; one end of the transmission shaft is fixedly connected with the transmission disc. The other end of the transmission shaft is fixedly connected with the spline.

Wherein in one embodiment: the belt wheel and the reducing mechanism are connected with each other through a frame component. The rack assembly comprises two first rack bodies and a second rack body which is adapted to the inner side walls of the first rack bodies; the two first frame bodies are respectively hinged with the belt wheel and the reducing mechanism; the first frame body and the second frame body are connected in a detachable mode according to the uniformly arranged space.

Based on the above embodiment, the first frame body and the second frame body which is adapted to the inner side wall of the first frame body are detachably arranged at intervals, based on the belt length of the actual condition selected transmission belt, the first frame body is telescopically adjusted between the second frame bodies, and the center distance parameter of the transmission belt system formed by the device can be controlled, so that the modular assembly is realized.

Compared with the prior art, the utility model has the beneficial effects that: the utility model is of modularized design as a whole, realizes the functions of center distance adjustment and parametrization by means of selective assembly, realizes the transmission function of the transmission belt in a non-stop state by means of pure mechanical cooperation, can realize self variable transmission without depending on an external mechanism, and effectively meets the actual and application requirements thereof.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a perspective view of another embodiment of the present utility model;

FIG. 3 is a schematic perspective view of a reducing mechanism according to the present utility model;

FIG. 4 is a perspective view of the inside of the reducing mechanism according to the present utility model;

FIG. 5 is a schematic view of another perspective view of the inside of the reducing mechanism of the present utility model;

fig. 6 is a schematic view of another perspective view of the inside of the reducing mechanism of the present utility model.

Reference numerals: 1. a transmission belt; 2. a belt wheel; 3. a reducing mechanism; 301. a transmission shaft; 302. a spline; 303. a housing; 304. an arc-shaped contact portion; 305. a hinge claw; 306. a screw rod; 307. a fixing piece; 308. a torsion spring; 309. a spring; 310. a drive plate; 4. a frame assembly; 401. a first frame body; 402. and a second frame body.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. This utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below;

It should be noted that the terms "first," "second," "symmetric," "array," and the like are used merely for distinguishing between description and location descriptions, and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of features indicated. Thus, a feature defining "first," "symmetry," or the like, may explicitly or implicitly include one or more such feature; also, where certain features are not limited in number by words such as "two," "three," etc., it should be noted that the feature likewise pertains to the explicit or implicit inclusion of one or more feature quantities;

In the present utility model, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "secured," and the like are to be construed broadly; for example, the connection can be fixed connection, detachable connection or integrated molding; the connection may be mechanical, direct, welded, indirect via an intermediate medium, internal communication between two elements, or interaction between two elements. The specific meaning of the terms described above in the present utility model will be understood by those skilled in the art from the specification and drawings in combination with specific cases.

Based on modular design and parameterized design concepts, and through pure mechanical cooperation and no-stop state for variable speed transmission function, please refer to fig. 1-6, the utility model provides a technical scheme that: a modular assembled variable speed drive belt mechanism;

the traditional driving belt mechanism comprises two belt pulleys 2 which are respectively a driving wheel and a driven wheel and a driving belt 1; in the technical scheme provided by the specific embodiment, the driving wheel is set as a reducing mechanism 3; the reducing mechanism 3 is matched and driven with the driving belt 1 through three arc-shaped contact parts 304 which are arranged in an annular array; meanwhile, two degrees of freedom exist in the reducing mechanism 3, one degree of freedom is used for being matched with an external power piece to drive the driving belt 1, the other degree of freedom is used for synchronously adjusting the circular outer diameter formed by each arc-shaped contact part 304, and variable speed drive is realized by changing the outer diameter size.

In some embodiments of the present application, please refer to fig. 3-6 in combination: the reducing mechanism 3 comprises a shell 303, hinge claws 305 corresponding to the number of the arc-shaped contact parts 304 and a transmission disc 310;

One end of the housing 303 is fixedly connected with the driving disc 310, and one end of each hinge claw 305 is arranged on the outer surface of the driving disc 310 in a hinged manner and is integrally arranged in an annular array; the outer surface of the hinge claw 305 is fixedly connected with an arc-shaped contact part 304; the transmission belt 1 is directly matched with the arc-shaped contact part 304 and simultaneously correspondingly transmits through the hinge claw 305; the degree of freedom for synchronously adjusting the circular outer diameter of each arcuate contact 304 is a linear degree of freedom that mates with the drive disk 310.

In this scheme, the driving disc 310 is responsible for directly connecting with an external power piece, and rotates in cooperation with the hinge claw 305 and the arc contact part 304 to rotate, so as to meet the related motion requirement of the driving belt;

Specifically, the reducing mechanism 3 further includes a transmission shaft 301; one end of the transmission shaft 301 is fixedly connected with the transmission disc 310; the outside of the transmission shaft 301 is used for connecting an external power piece;

Preferably, the power part is a constant-speed motor, the other end of the transmission shaft 301 is fixedly connected with the spline 302, and an output shaft of the constant-speed motor is rigidly connected with the transmission shaft 301 through the spline 302.

It will be appreciated that in this embodiment, the spline connection is more load bearing and centering and guiding than a flat key by the multi-tooth load transfer with spline 302 as the core; because the key tooth line stress concentration is small, the weakening of the shaft is less;

In some embodiments of the present application, please refer to fig. 3-6 in combination: the reducing mechanism 3 further comprises a screw rod 306 and a fixing piece 307; meanwhile, the outer surface of the fixing plate 307 is rotatably connected with the driving plate 310 through a bearing, and the two are not in direct contact; the outer surface of the screw 306 is screw-fitted with the fixing piece 307, and the linear degree of freedom is generated by the screw 306, and the head of the screw 306 is coupled with the transmission plate 310 through a bearing.

In this scheme, the linear degree of freedom cooperates with the distance between the pushing and adjusting fixing plates 307 and the driving plate 310, so that the arc contact portion 304 can be driven to obtain a linear degree of freedom; based on the linear degree of freedom, synchronous diameter changing operation between each group of arc-shaped contact parts 304 can be realized through other parts, namely variable speed transmission is realized;

specifically, since the outer surface of the fixing plate 307 is rotationally connected with the driving plate 310 through a bearing, and the two are not in direct contact, and if the distance between the two is adjustable, the outer tile length of the bearing determines the distance between the two, so that the length of the bearing should be greater than the length of the driving plate 310 itself;

It can be understood that, in this embodiment, the fixing piece 307 is fixed and matched to the external environment, and the fixing piece 307 is required to be installed in the external fixed environment as the fixed end of the whole reducing mechanism 3 due to the assembly requirement of the whole mechanism; because the transmission is not participated, a degree of freedom can be increased through the matched bearing, and interference phenomenon among mechanisms is counteracted;

preferably, the reducing mechanism 3 further comprises a torsion spring 308 and a spring 309; one end of the torsion spring 308 is fixedly connected to the inner side wall of the shell 303, and the other end is fixedly connected to the outer surface of the hinge claw 305;

Based on the linear degree of freedom, the torsion spring 308 is elastically deformed due to the position change of the hinge claw 305, so as to draw the hinge claw 305 and the arc contact portion 304 to change the angle; because each set of hinge fingers 305 and arcuate contact 304 are synchronized to change due to the adjustment of the position of drive plate 310, the adjustment of each set of hinge fingers 305 and arcuate contact 304 is synchronized;

based on this, the outer circular outer diameter of the hinge claw 305 and the arc-shaped contact portion 304 is changed; when the diameter of the wheel as the driving wheel is changed, the speed change phenomenon is necessarily generated; based on the principle, the device integrally realizes speed change adjustment; the specific speed change ratio is in direct proportion to the advancing distance of the screw rod 306;

Meanwhile, one end and the other end of the spring 309 respectively abut against the fixing piece 307 and the housing 303; when the drive disk 310 is pitch-adjusted, it achieves elastic power storage and provides a shock absorbing function by means of the spring 309.

In the scheme, the circumference requirement of the transmission belt 1 is met by a speed change mode generated in a variable diameter adjustment mode, so that the transmission belt 1 is preferably a V-shaped belt with the existing standard during assembly, and the use requirement of the device is met through the high elastic deformation characteristic of the V-shaped belt;

The driving belt 1 is a common V belt, and a specific model is Y, Z, A, B, C, D or E;

illustratively, belt 1 is one of narrow V-belt, SPZ, SPA, SPB or SPC;

in some embodiments of the present application, please refer to fig. 2 in combination: the belt wheel 2 and the reducing mechanism 3 are connected with each other through a frame assembly 4. The frame assembly 4 comprises two first frame bodies 401 and a second frame body 402 which is adapted to the inner side walls thereof; the two first frame bodies 401 are respectively hinged with a belt wheel 2 and a reducing mechanism 3; the first frame 401 and the second frame 402 are connected in a detachable manner according to the uniformly arranged intervals;

in the scheme, the first frame body 401 and the second frame body 402 are connected through bolts, and corresponding threaded holes are uniformly formed in a certain interval;

Specifically, based on actual application requirements, the distance between the first frame 401 and the second frame 402 can be matched in a sliding manner in advance, the threaded holes closest to the distance are corresponding, and the threaded holes are fixedly connected through bolts, so that the device is used as a center distance model selection of a transmission belt system.

It will be appreciated that in this embodiment, by the above-described alternative, it also determines the circumference of the drive belt 1.

The technical features of the above-described embodiments may be combined in any manner, and for brevity, all of the possible combinations of the technical features of the above-described embodiments may not be described, however, they should be considered as the scope of the present description as long as there is no contradiction between the combinations of the technical features.

Examples

S1, performing pre-selection of a center distance through a frame assembly 4;

S2, the device is arranged in a driving mechanism corresponding to an external nonstandard device, wherein one end of the outside of the belt wheel is in running fit, and the other end of the belt wheel is in fit connection with a part which is in transmission with the belt wheel;

S3, fixing piece 307 is fixedly connected to the external relative fixed part, and transmission shaft 301 is fixedly matched with an external power piece for driving the device to operate;

s4, the screw rod 306 can be independently controlled by manual rotation, and a power piece can be further arranged for driving;

s5, a transmission shaft 301 rotates to drive a reducing mechanism 3 to rotate and drive a transmission belt 1 and a belt pulley 2 to transmit;

And S6, when the speed change adjustment is needed, the screw rod 306 is rotated to control the hinge claw 306 to perform synchronous angle adjustment to perform diameter change treatment, so that the speed change function is realized.

The above examples merely illustrate embodiments of the utility model that are specific and detailed for the relevant practical applications, but are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (8)

1. The utility model provides a modularization assembled variable speed drive belt mechanism, includes the drive belt mechanism that constitutes by pulley (2) cooperation drive belt (1) of two respectively being action wheel and follow driving wheel, its characterized in that: the driving wheel is a reducing mechanism (3);

the reducing mechanism (3) is matched and driven with the driving belt (1) through at least three arc-shaped contact parts (304) which are distributed in an annular array mode;

Two degrees of freedom exist in the reducing mechanism (3), one degree of freedom is used for being matched with an external power piece to be transmitted to the transmission belt (1), the other degree of freedom is used for synchronously adjusting the circular outer diameter formed by each arc-shaped contact part (304), and variable speed transmission is achieved by changing the outer diameter size.

2. A modular, assembled variable speed drive belt mechanism as in claim 1, wherein: the reducing mechanism (3) comprises a shell (303), hinge claws (305) corresponding to the number of the arc-shaped contact parts (304), and a transmission disc (310);

One end of the shell (303) is fixedly connected with the transmission disc (310), and one end of each hinge claw (305) is arranged on the outer surface of the transmission disc (310) in a hinged mode and is integrally distributed in an annular array;

The outer surface of the hinge claw (305) is fixedly connected with the arc-shaped contact part (304);

The degrees of freedom for synchronously adjusting the circular outer diameter of each arcuate contact (304) are linear degrees of freedom that mate with the drive disk (310).

3. A modular, assembled variable speed drive belt mechanism as claimed in claim 2, wherein: the reducing mechanism (3) further comprises a screw rod (306) and a fixing piece (307);

the outer surface of the fixing piece (307) is rotationally connected with the transmission disc (310) through a bearing, and the outer surface of the fixing piece and the transmission disc are not in direct contact;

the outer surface of the screw rod (306) is in threaded fit with the fixing piece (307), the linear freedom degree is generated by the screw rod (306), and the head of the screw rod (306) is in fit connection with the transmission disc (310) through a bearing.

4. A modular, assembled variable speed drive belt mechanism as claimed in claim 3, wherein: the reducing mechanism (3) further comprises a torsion spring (308) and a spring (309);

One end of the torsion spring (308) is fixedly connected to the inner side wall of the shell (303), and the other end of the torsion spring is fixedly connected to the outer surface of the hinge claw (305);

One end and the other end of the spring (309) respectively abut against the fixing piece (307) and the housing (303).

5. A modular, assembled, variable speed drive belt mechanism as claimed in any one of claims 2 to 4, wherein: the reducing mechanism (3) further comprises a transmission shaft (301);

one end of the transmission shaft (301) is fixedly connected with the transmission disc (310).

6. A modular, assembled variable speed drive belt mechanism as in claim 5, wherein: the other end of the transmission shaft (301) is fixedly connected with a spline (302).

7. A modular, assembled variable speed drive belt mechanism as in claim 1, wherein: the belt wheel (2) and the reducing mechanism (3) are connected with each other through a frame component (4).

8. A modular, assembled variable speed drive belt mechanism as in claim 7, wherein: the frame assembly (4) comprises two first frame bodies (401) and a second frame body (402) which is adapted to the inner side walls of the first frame bodies;

The two first frame bodies (401) are respectively hinged with the belt wheel (2) and the reducing mechanism (3); the first frame body (401) and the second frame body (402) are connected in a detachable mode according to the uniformly arranged space.