WO2021189636A1

WO2021189636A1 - Steel belt transmission mechanism and belt wheels thereof

Info

Publication number: WO2021189636A1
Application number: PCT/CN2020/092712
Authority: WO
Inventors: 黄强; 高峻峣; 张春雷; 高建程; 余张国; 陈学超; 范徐笑; 左昱昱
Original assignee: 北京理工大学
Priority date: 2020-03-23
Filing date: 2020-05-27
Publication date: 2021-09-30
Also published as: CN111706646B; CN111706646A

Abstract

The present invention provides a steel belt transmission mechanism and belt wheels thereof. The steel belt transmission mechanism comprises a driving wheel, a driven wheel and a steel belt transmission belt; the driving wheel and/or the driven wheel comprise: a belt wheel outer ring, a plurality of rolling bodies and a belt wheel lining coaxial with the belt wheel outer ring; a plurality of limiting through-holes are uniformly distributed in a circumferential direction of the belt wheel outer ring, so as to accommodate the plurality of rolling bodies, and an aperture at one end, located on an outer surface of the belt wheel outer ring, of each of the limiting through-holes contracts, so as to prevent the rolling bodies from slipping out of an outer surface of the belt wheel outer ring; a first toothed structure arranged in a circumferential direction is provided on an inner surface of the belt wheel outer ring, and a second toothed structure engaged with the first toothed structure is provided on an outer surface of the belt wheel lining; the rolling body in each of the limiting through-holes is stopped by the belt wheel lining, such that part of the rolling body protrudes from the outer surface of the belt wheel outer ring; the transmission belt is sleeved on the outer surface of the belt wheel outer ring, and an inner surface of the transmission belt is provided with recess portions for fitting with protruding portions of the rolling bodies.

Description

Steel belt transmission mechanism and its pulley

Technical field

The invention relates to the technical field of mechanical transmission, in particular to a steel belt transmission mechanism and its pulley.

Background technique

Mechanical transmission is widely used in mechanical engineering, mainly refers to the transmission of power and movement by mechanical means. Commonly used mechanical transmissions mainly include gear transmission, belt transmission, chain transmission, worm gear transmission and screw transmission, etc. Generally, belt transmission, chain transmission, rack transmission and wire rope transmission are used in long-distance transmission. In the existing long-distance precision mechanical transmission, chain transmission and rack transmission occupy a large space, heavier weight, and have a large backlash, so they are not suitable for reciprocating precision transmission; traditional belt transmission and wire rope transmission It has a certain degree of flexibility. When the distance is long, the flexibility characteristics will be amplified, which will affect the precision of transmission. In contrast, the existing steel belt transmission has a compact structure, small space occupation, simple transmission mode, and transmission accuracy High, large transmission torque, long-distance transmission of movement and power, and it is increasingly widely used in precision mechanical transmissions that have certain requirements on space and weight.

However, the existing steel belt transmission structure may slip when the load is large, and there will be a backlash for the reciprocating motion, which will also affect the precision of the precision mechanical transmission. Therefore, how to solve the slip problem of the steel belt transmission? Ensuring transmission accuracy is a problem to be solved.

Summary of the invention

In view of this, the present invention provides a steel belt transmission mechanism and its pulley to solve one or more problems existing in the existing transmission mechanism.

In one aspect of the present invention, a steel belt transmission mechanism is provided, which includes a transmission wheel and a steel belt transmission belt. The transmission wheel includes a driving wheel and a driven wheel. A plurality of rolling bodies and a pulley inner liner coaxial with the outer ring of the pulley;

A plurality of limiting through holes are evenly distributed in the circumferential direction of the outer ring of the pulley for accommodating the plurality of rolling elements, and the diameter of one end of each limiting through hole located on the outer surface of the outer ring of the pulley shrinks. , Used to prevent the rolling body from slipping out of the outer surface of the pulley outer ring;

The inner surface of the outer ring of the pulley has a first toothed structure arranged in a circumferential direction, and the outer surface of the inner liner of the pulley has a second toothed structure that meshes with the first toothed structure;

The rolling elements in each limiting through hole are blocked by the inner lining of the pulley, so that a part of the rolling elements protrudes from the outer surface of the outer ring of the pulley;

The transmission belt is sleeved on the outer surface of the outer ring of the pulley, and the inner surface of the transmission belt has a concave portion for fitting with the protruding part of the rolling body.

In some embodiments of the present invention, the pulley lining of the driving wheel and/or the driven wheel is connected to the corresponding transmission shaft.

In some embodiments of the present invention, the transmission mechanism further includes: a motor, the output shaft of which is connected to the pulley lining of the driving wheel, and is used to drive the driving wheel; a motor support is used to fix the motor; The driven wheel output shaft is connected with the pulley lining of the driven wheel; and the driven wheel output shaft bracket is used to support the driven wheel output shaft.

In some embodiments of the present invention, the heights of the motor support and the driven wheel output shaft support are set such that the motor output shaft and the driven wheel output shaft are on the same horizontal line.

In some embodiments of the present invention, the first tooth-shaped structure and the second tooth-shaped structure each include a tooth portion and a tooth groove portion, and the tooth portion of the second tooth-shaped structure blocks the inside of the limiting through hole. The rolling body.

In some embodiments of the present invention, the rolling element is a ball, and the edge of each limiting through hole at one end of the outer surface of the pulley outer ring has a circular arc-shaped constricted structure.

In some embodiments of the present invention, the plurality of rolling elements include more than three balls, and the recesses on the inner surface of the transmission belt are arc grooves.

In some embodiments of the present invention, the transmission belt is formed by superimposing multiple layers of thin steel belts.

In some embodiments of the present invention, at least one position of the steel belt drive belt has an upper pressing plate and a lower pressing plate in the width direction, and the upper pressing plate and the lower pressing plate are fastened by screws.

In another aspect of the present invention, there is also provided a pulley of a steel belt transmission mechanism, the inner surface of the transmission belt of the steel belt transmission mechanism has recesses uniformly arranged along the conveying direction of the conveyor belt; the pulley includes: a belt A wheel outer ring, a plurality of rolling elements, and a pulley inner lining coaxial with the pulley outer ring; a plurality of limiting through holes are evenly distributed in the circumferential direction of the pulley outer ring for accommodating the A plurality of rolling elements, and the aperture of one end of each limiting through hole located on the outer surface of the outer ring of the pulley is contracted to prevent the rolling elements from sliding out of the outer surface of the outer ring of the pulley; the outer ring of the pulley The inner surface of the pulley has a first toothed structure arranged in a circumferential direction, and the outer surface of the pulley inner liner has a second toothed structure that meshes with the first toothed structure; each limiting through hole The rolling elements are blocked by the inner lining of the pulley, so that a part of the rolling elements protrudes from the outer surface of the outer ring of the pulley; The recesses are matched.

The steel belt transmission mechanism provided by the embodiment of the present invention optimizes the movement and power transmitted over a long distance. The transmission mechanism uses steel belt transmission, which greatly improves the carrying capacity of the transmission mechanism in a relatively compact space. The steel belts are precisely positioned by the cooperation of the ball and the concave part, which not only has good synchronization performance and no slippage, but also realizes the reciprocating motion of the steel belt without back-and-forth.

Further, in the embodiment of the present invention, an integrated design of a multi-layer steel belt structure can also be adopted, which further improves the carrying capacity of the transmission mechanism in a relatively compact space.

The additional advantages, objectives, and features of the present invention will be partially explained in the following description, and will become partially obvious to those of ordinary skill in the art after studying the following, or can be learned from the practice of the present invention. The purpose and other advantages of the present invention can be realized and obtained through the structure specified in the written description, its claims, and the drawings.

Those skilled in the art will understand that the objects and advantages that can be achieved by the present invention are not limited to the specific descriptions above, and the above and other objects that can be achieved by the present invention will be more clearly understood based on the following detailed description.

Description of the drawings

The drawings described here are used to provide a further understanding of the present invention, constitute a part of the application, and do not constitute a limitation to the present invention. The components in the drawings are not drawn to scale, but merely to illustrate the principle of the present invention. In order to facilitate the illustration and description of some parts of the present invention, corresponding parts in the drawings may be enlarged, that is, other components in the exemplary device actually manufactured according to the present invention may become larger. In the attached picture:

Fig. 1 is a schematic diagram of the overall structure of a steel belt transmission mechanism in an embodiment of the present invention.

Fig. 2 is an A-A sectional view example 1 of the steel belt transmission mechanism shown in Fig. 1.

Fig. 3 is a partial enlarged view of I in the cross-sectional view shown in Fig. 2.

Fig. 4 is an A-A sectional view example 2 of the steel belt transmission mechanism shown in Fig. 1.

Detailed ways

In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following further describes the embodiments of the present invention in detail with reference to the accompanying drawings. Here, the exemplary embodiments of the present invention and the description thereof are used to explain the present invention, but not as a limitation to the present invention.

Here, it should be noted that in order to avoid obscuring the present invention due to unnecessary details, only the structure and/or processing steps closely related to the solution according to the present invention are shown in the drawings, and the present invention is omitted. Invent other details that are not relevant.

It should be emphasized that the term "include/include/have" when used herein refers to the existence of features, elements, steps or components, but does not exclude the existence or addition of one or more other features, elements, steps or components.

Here, it should also be noted that the azimuth nouns such as "upper" and "lower" appearing in the content of this specification are relative to the position shown in the drawings; if there is no special description, the term "connected" can be used in this text. Refers to a direct connection, or an indirect connection in which an intermediate exists. Direct connection means that two parts are connected without the aid of intermediate parts, and indirect connection means that the two parts are connected by other parts.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same reference numerals represent the same or similar components.

The invention discloses a steel belt transmission mechanism. The transmission mechanism may include a transmission wheel (or a belt wheel) and a steel belt transmission belt. The transmission wheel includes a driving wheel and a driven wheel. Also called the driving wheel input shaft) drive and drive the transmission belt to run. The driven wheel is driven by the transmission belt, and the driven wheel is connected with the output shaft (second transmission shaft) of the driven wheel to output motion and power to the load. In the embodiment of the present invention, the driving wheel and/or the driven wheel are provided with balls or other rolling body structures protruding from the outer surface thereof, and a concave portion is provided on the inner surface of the transmission belt to cooperate with (for example, fit) the balls or other rolling bodies, To eliminate or basically eliminate the backlash, thereby improving the precision of precision mechanical transmission, the steel belt transmission mechanism is especially suitable for reciprocating precision transmission.

In some embodiments of the present invention, the transmission wheels (driving wheel and driven wheel) of the steel belt transmission mechanism are designed to include: a pulley outer ring, a plurality of rolling bodies, and a pulley inner liner coaxial with the pulley outer ring. The belt wheel linings of the driving wheel and the driven wheel are connected with the corresponding drive shafts, that is, the belt wheel linings of the driving wheel are connected with the output shaft of the motor, and the belt wheel linings of the driven wheel are connected with the output shaft of the driven wheel.

In some embodiments of the present invention, a plurality of limiting through holes are evenly distributed in the circumferential direction of the outer ring of the pulley for accommodating a plurality of rolling elements, and each of the limiting through holes is located on the outer surface of the outer ring of the pulley. The aperture at one end (ie, the outer end) shrinks so that the through hole can accommodate the rolling elements, and at the same time has a limited effect on the rolling elements, that is, it can prevent the rolling elements from escaping from the through hole, and is used to prevent the rolling elements from slipping out of the outer surface of the pulley outer ring. In the embodiment of the present invention, the rolling body on the transmission wheel may be a ball or a roller whose axis is parallel to the transmission shaft of the transmission wheel, etc., but the present invention is not limited to this. The inner surface of the outer ring of the pulley has first toothed structures arranged in a circumferential direction, and the outer surface of the inner liner of the pulley has a second toothed structure that matches (eg meshes) with the first toothed structure. After each rolling element is installed in each limit through hole, the outer ring of the pulley and the pulley inner lining can be installed coaxially. At this time, the rolling element in each limit through hole is blocked by the pulley inner lining. In other words, the rolling element is lined by the inner ring of the pulley, so that a part of the rolling element protrudes from the outer surface of the outer ring of the pulley. Further, the transmission belt is sleeved on the outer surface of the outer ring of the pulley, and the inner surface of the transmission belt has a concave portion (such as an arc-shaped groove) for fitting with the convex portion of the rolling element. In this way, when the steel belt transmission mechanism is in operation, the close contact between the balls and the concave part of the transmission belt can effectively eliminate or basically eliminate the transmission backlash, prevent slippage, and greatly improve the precision of precision mechanical transmission.

In the existing belt transmission process, when the rotation speed of the driving wheel changes or the direction of rotation is changed, the driven wheel will lag or lead relative to the driving wheel. After multiple changes in the direction of rotation, the lag or lead will gradually increase. . In the embodiment of the present invention, the cooperation (such as fitting) of the rolling elements and the concave portion of the inner surface of the transmission belt can effectively prevent the driven wheel from lagging or leading, thereby ensuring that the transmission belt has no transmission backlash during the reciprocating motion of the transmission belt.

Further, in some embodiments of the present invention, the steel belt transmission belt is formed by superimposing multiple layers of thin steel belts. As an example, the multi-layer structure of the steel belt drive belt can be clamped at a predetermined position with an upper pressing plate and a lower pressing plate, and the upper pressing plate and the lower pressing plate are fastened by screws, so that the multilayer steel belt is compressed into a whole, thereby Greatly improve the carrying capacity of the steel belt.

Fig. 1 is a schematic diagram of the overall structure of a steel belt transmission mechanism in an embodiment of the present invention. 2 is an A-A cross-sectional view example 1 of the steel belt transmission mechanism shown in FIG. 1. As shown in FIGS. 1 and 2, the transmission mechanism may include a motor 100, a driving wheel 700, a driven wheel 800, and a driven wheel output shaft 300. In addition, a motor support 200 and a driven shaft support 400 may also be included. The output shaft of the motor 100 is connected with the pulley liner 730 of the driving wheel 700 for driving the driving wheel 700; the motor support 200 is used for fixing the motor 100. The output shaft 300 of the driven wheel is connected with the pulley lining of the driven wheel. The driven wheel output shaft bracket 400 is used to support the driven wheel output shaft 300. In some embodiments of the present invention, the height of both the motor support 200 and the driven shaft support 400 may preferably be set such that the motor output shaft and the driven wheel output shaft are on the same horizontal line.

The driving wheel 700 and the driven wheel 800 in the transmission mechanism shown in FIGS. 1 and 2 are both designed as separate structures. The driving wheel 700 and the driven wheel 800 may each include a pulley outer ring 710, a plurality of balls 720, and a belt. A pulley inner liner 730 with a coaxial outer ring of the wheel. There are a plurality of limiting through holes evenly distributed in the circumferential direction of the pulley outer ring 710, 6 in FIG. 2, but the present invention is not limited to this, and it may be more or less, preferably 3 above. As shown in FIG. 2, the edge of each limiting through hole 711 located on the outer surface of the pulley outer ring 710 has an arc-shaped closed structure to prevent the balls 720 from slipping out of the outer surface of the pulley outer ring 710. The inner surface of the pulley outer ring 710 has a first tooth structure evenly arranged in the circumferential direction, and the outer surface of the pulley inner liner 730 has a second tooth structure meshing with the first tooth structure. Both the first tooth structure and the second tooth structure include a tooth portion and a tooth groove portion. In some embodiments of the present invention, the tooth portion and the tooth portion of the first tooth profile structure and the second tooth profile structure may be arc-shaped teeth and arc-shaped tooth grooves, as shown in FIG. 2, but the present invention is not limited thereto. .

When installing the driving wheel 700 and the driven wheel 800, install the ball 720 from the end of the narrowing limit through hole 711 located on the inner surface of the pulley outer ring 710 in the pulley outer ring 710, and then the pulley inner liner 730 and the pulley The outer ring 710 meshes with gear tooth grooves, so that the pulley outer ring 710, the balls 720, and the pulley inner liner 730 are installed as one body. When the pulley outer ring 710, the balls 720, and the pulley inner liner 730 are integrated, each The ball 720 in the limiting through hole 711 is blocked by the pulley inner liner 730, more preferably by the teeth of the second tooth structure, so that a part of the ball 720 protrudes from the outer surface of the pulley outer ring 710. Due to the limitation of the opening position of the pulley inner liner 730 and the closing limit through hole 711, the ball 720 only makes a rotating movement in the closing limit through hole 711 of the pulley outer ring 710.

The transmission belt 900 in the steel belt transmission mechanism is sleeved on the outer surface of the outer ring of the pulley, and the part of the inner surface of the transmission belt 900 that is attached to the transmission wheel has a concave portion that is attached to the protruding portion of the ball 720, such as The arc groove makes the steel belt 900 and the ball 720 fit perfectly. As shown in Figure 3, the ball 720 protrudes from the surface of the transmission wheel, and the protruding part is embedded in the arc groove of the steel belt 900. When the arc groove of the steel belt matches the ball, the driving wheel can drive the steel belt to transmit. , And the steel belt drives the driven wheel to rotate. This ensures that the steel belt 900 has no backlash in the process of reciprocating motion and power transmission. It should be understood that in the entire transmission mechanism, any one of the driving wheel 700 and the driven wheel 800 can also be designed as a structure with balls 720, which can also achieve the desired effect.

In an embodiment of the present invention, the pulley lining 730 on the transmission wheel in the steel belt transmission mechanism is connected to the transmission shaft. The drive shaft can drive the belt inner liner 730 to rotate. Since the pulley inner liner 730 and the pulley outer ring 710 are connected as a whole through a toothed structure, the pulley outer ring 710 and the pulley inner liner 730 can rotate synchronously. As shown in Figure 2, the center of the pulley lining 730 is provided with a through hole for installing the transmission shaft. The circumferential fixing method between the transmission shaft and the pulley lining 730 can be keyed, and the axial fixing method can be fixed by the shoulder. It is fixed to the shaft end retaining ring, etc., but the present invention is not limited to this. In addition, the transmission shaft can also be fixed on the pulley outer ring 710. For example, the end of the pulley outer ring 710 can have an end cover. Connected as a whole, the drive shaft drives the pulley outer ring 710 to rotate, and the pulley inner liner 730 rotates synchronously with the pulley outer ring. It can be seen from the above connection mode that the transmission shaft can be connected to the pulley inner liner 730 as a whole, or it can be connected to the pulley outer ring 710 as a whole, and the connection between them is not unique, so in actual use, The connection between the transmission shaft and the pulley should not be restricted, as long as the synchronous rotation between the transmission shaft and the transmission wheel can be achieved.

As shown in Figure 3, the outer edge of the limiting through hole 711 can be set to a circular arc structure to limit the ball. It can be seen from Figure 3 that the cylindrical through hole is close to the outer surface of the pulley outer ring 710. The end side wall has an arc-shaped structure, so that the diameter of the intersection line between the cylindrical through hole and the outer surface of the pulley outer ring 710 is smaller than the diameter of the ball to ensure that the ball does not slip off the outer surface of the pulley outer ring 710. Through the above arrangement, when the ball is installed in the through hole, less than half of the ball will protrude from the outer surface of the pulley outer ring 710.

In addition to the above-mentioned rolling elements 720 using balls, the rolling elements 720 can also be cylindrical rollers, that is, rollers. If the rolling element 720 is a cylindrical roller, the cross section of the narrowing limit through hole 711 perpendicular to the normal direction of the pulley outer ring 710 may be a rectangle, that is, a rectangular through hole. The diameter of one end of the rectangular through hole located on the outer surface of the pulley outer ring gradually shrinks, forming a narrowing limit through hole 711, so that a part of the roller can be leaked and the roller can be prevented from slipping out of the through hole.

In one embodiment of the present invention, the tooth groove structure on the inner surface of the pulley outer ring 710 is in the shape of an arc. Since the pulley outer ring 710 and the pulley inner liner 730 are integrated by the tooth structure, the tooth groove structure is located in the belt The corresponding upper gear teeth on the outer surface of the wheel lining 730 should be designed to be arc-shaped, the gear teeth of the pulley outer ring 710 and the pulley lining 730 are evenly distributed, and the adjacent tooth widths and teeth on the same component The slot width dimensions can be equal or unequal.

As shown in Figure 2, the tooth grooves on the pulley outer ring 710 are in communication with the narrowing limit through hole 711, and the balls 720 are embedded in the tooth grooves on the inner surface of the pulley outer ring 710 into the narrowing limit through hole 711, and then the belt The pulley inner liner 730 with arc-shaped gear teeth is installed in the hollow part of the pulley outer ring 710 so that the gear teeth of the pulley inner liner 730 mesh with the tooth grooves of the pulley outer ring 710. At this time, the outer surface of the gear tooth of the pulley inner liner 730 is in contact with the ball 720.

Fig. 4 is an A-A sectional view example 2 of the steel belt transmission mechanism shown in Fig. 1. As shown in FIG. 4, the tooth grooves of the outer ring 710 of the pulley may be arranged between adjacent constriction through holes 711. At this time, it can be understood that the rolling body 720 is in contact with the outer surface of the pulley lining 730, or the rolling body 720 is in contact with the tooth groove of the pulley lining 730. At this time, since the gear teeth on the pulley inner liner 730 are not located directly below the rolling body 720, no wear can be formed between the rolling body 720 and the gear teeth of the pulley inner liner 730. At this time, the shape of the gear teeth can not only be designed as a circle. Curved gear teeth can also be designed as trapezoidal gear teeth or triangular gear teeth.

As shown in Figure 3, the steel strip 900 can be formed by stacking multiple layers of thin steel strips. The size of the inner ring of the outer thin steel strip is equal to the size of the outer ring of the adjacent inner thin steel strip. The steel belts are superimposed and combined into an integral multi-layer steel belt, which can greatly improve the carrying capacity of the transmission mechanism in a relatively compact space. As shown in Figure 2, in this embodiment, the multi-layer thin steel belt is fixed by a pressing plate, and the multilayer thin steel belt is placed between the upper pressing plate 910 and the lower pressing plate 920 of the steel belt, and the upper pressing plate 910 and the lower pressing plate of the steel belt The pressure plate is then fixed by the fixing screw 930. The multi-layer thin steel belt is connected as a whole through the upper steel belt pressing plate 910 and the steel belt lower pressing plate 920, which can ensure that the multi-layer thin steel belts work together when transmitting motion and power, avoiding the stress concentration of the single-layer thin steel belt, and greatly improve The load-bearing capacity of the steel belt 900 is improved. The fixing method of the pressing plate is only an example, and the present invention is not limited to this. When the transmission mechanism is in transmission, the motor 100 drives the driving wheel 700 to rotate through the motor output shaft, the driving wheel 700 rotates and drives the steel belt 900 to rotate, the steel belt 900 drives the driven wheel 800 to rotate, and the driven wheel 800 moves and rotates through the driven shaft 300. The power is output to the load.

The multi-layer steel belt transmission mechanism provided by the embodiment of the present invention can ensure strong rigidity and small elasticity during the process of transmitting movement and power over a long distance; and the transmission steel belt is an integrated design of the multi-layer steel belt structure, which is relatively compact. The load-bearing capacity of the transmission mechanism is greatly improved in the space; in addition, the steel belt and the transmission wheel are positioned by balls, which has high transmission accuracy, good synchronization performance, no slippage, and no back-and-forth movement of the steel belt.

Correspondingly, the present invention also discloses a pulley of a steel belt transmission mechanism. The pulley includes a pulley outer ring, a rolling body and a pulley inner lining. The outer ring of the pulley is evenly arranged in the circumferential direction with narrowing and limiting through holes for accommodating the rolling elements and preventing the rolling elements from sliding out of the outer surface of the outer ring of the pulley. The aperture of each limiting through hole at one end of the outer surface of the pulley outer ring is shrunk to prevent the rolling elements from slipping out of the outer surface of the pulley outer ring. The inner surface of the outer ring of the pulley has a first toothed structure, and the outer surface of the inner liner of the pulley has a second toothed structure that meshes with the first toothed structure. During installation, install the rolling elements from the inside of the outer ring of the pulley into the through hole, and then mesh the inner liner of the pulley with the outer ring of the pulley through the gear tooth groove, and then the outer ring of the pulley, the rolling element, and the inner ring of the pulley are meshed. The lining is fixed as a whole. When the outer ring of the pulley, the rolling element, and the inner lining of the pulley are integrated, the rolling element is in contact with the inner lining of the pulley, and a small part of the rolling element protrudes from the outer surface of the outer ring of the pulley . When the transmission belt is sleeved on the outer surface of the outer ring of the pulley, the protruding part of the rolling body is used to fit the groove on the inner surface of the transmission belt of the steel belt transmission mechanism.

The pulley is similar to the embodiments listed in the above-mentioned steel belt transmission mechanism in that the rolling elements can be balls or rollers. When a ball is used for the rolling element, the narrowing limit through hole for accommodating the ball is correspondingly set as a cylindrical through hole. If a roller is used for the rolling element, the narrowing limit through hole can be set as a rectangular through hole.

It can be seen from the above that, according to the steel belt transmission mechanism and pulley disclosed in the present invention, at least the beneficial effects that can be obtained include:

1. Set the transmission wheel as a split structure, and the rolling elements in the belt wheel can effectively fit the groove of the steel belt, ensuring that there is no backlash during the forward and reverse rotation of the driving wheel and the driven wheel;

2. The rolling element is positioned between the steel belt and the transmission wheel, so that the synchronization performance between the steel belt and the pulley is good and does not slip;

3. The steel belt is an integrated design of multi-layer steel belt structure, which improves the carrying capacity of the transmission mechanism in a relatively compact space.

In the present invention, the features described and/or exemplified for one embodiment can be used in the same or similar manner in one or more other embodiments, and/or combined with the features of other embodiments or substituted for other embodiments. Features of the embodiment.

The above-listed embodiments show and describe the basic principles and main features of the present invention. However, the present invention is not limited by the above-mentioned embodiments. Those skilled in the art can make modifications to the present invention without creative work. Equivalent changes and modifications should fall within the protection scope of the technical solution of the present invention.

Claims

A steel belt transmission mechanism, comprising a belt wheel and a steel belt transmission belt (900), the belt wheel comprises a driving wheel (700) and a driven wheel (800), characterized in that the driving wheel (700) and/or from The driving wheel (800) includes: a pulley outer ring (710), a plurality of rolling elements (720), and a pulley inner liner (730) coaxial with the pulley outer ring (710);

A plurality of limiting through holes (711) are evenly distributed in the circumferential direction of the pulley outer ring (710) for accommodating the plurality of rolling elements (720), and each limiting through hole (711) is located The aperture of one end of the outer surface of the pulley outer ring (710) is shrunk to prevent the rolling element (720) from slipping out of the outer surface of the pulley outer ring (710);

The inner surface of the pulley outer ring (710) has a first toothed structure arranged in a circumferential direction, and the outer surface of the pulley inner liner (730) has a toothed structure meshing with the first toothed structure. Second tooth structure;

The rolling element (720) in each limiting through hole (711) is blocked by the pulley inner liner (730), so that a part of the rolling element (720) protrudes from the pulley outer ring (710)的外面;

The transmission belt is sleeved on the outer surface of the pulley outer ring (710), and the inner surface of the transmission belt has a concave part for fitting with the convex part of the rolling body (720).
The steel belt transmission mechanism according to claim 1, characterized in that the pulley lining (730) of the driving wheel (700) and/or the driven wheel (800) is connected to the corresponding transmission shaft.
The steel belt transmission mechanism according to claim 1, wherein the transmission mechanism further comprises:

A motor (100), the output shaft of which is connected to the pulley lining of the driving wheel (700), and is used to drive the driving wheel;

The motor support (200) is used to fix the motor (100);

The driven wheel output shaft (300) is connected with the pulley lining of the driven wheel (800); and

The driven wheel output shaft bracket (400) is used to support the driven wheel output shaft (300).
The steel belt transmission mechanism according to claim 3, wherein the heights of the motor support (200) and the driven wheel output shaft support (400) are set such that the motor output shaft and the driven wheel output shaft are at the same Horizontal line.
The steel belt transmission mechanism according to any one of claims 1 to 4, wherein the first toothed structure and the second toothed structure both comprise a tooth portion and a tooth groove portion, and the second tooth structure The tooth part of the tooth structure blocks the rolling element (720) in the limiting through hole (711).
The steel belt transmission mechanism according to any one of claims 1-4, characterized in that the rolling elements (720) are balls, and each limiting through hole (711) is located in the outer ring (710) of the pulley. ) The edge of one end of the outer surface has an arc-shaped closed structure.
The steel belt transmission mechanism according to claim 1, characterized in that the plurality of rolling bodies (720) comprise more than 3 balls, and the recesses on the inner surface of the transmission belt are arc grooves.
The steel belt transmission mechanism according to any one of claims 1 to 4, wherein the transmission belt (900) is formed by superimposing multiple layers of thin steel belts.
The steel belt transmission mechanism according to claim 8, wherein at least one position of the steel belt transmission belt has an upper pressing plate and a lower pressing plate in the width direction, and the upper pressing plate and the lower pressing plate are fastened by screws. .
A pulley for a steel belt transmission mechanism, characterized in that the inner surface of the transmission belt of the steel belt transmission mechanism has recesses uniformly arranged along the conveying direction of the conveyor belt; the pulley includes: the outer ring of the pulley ( 710), a plurality of rolling elements (720), and a pulley inner liner (730) coaxial with the pulley outer ring (710);

A plurality of limiting through holes (711) are evenly distributed in the circumferential direction of the pulley outer ring (710) for accommodating the plurality of rolling elements (720), and each limiting through hole (711) is located The aperture of one end of the outer surface of the pulley outer ring (710) is shrunk to prevent the rolling element (720) from slipping out of the outer surface of the pulley outer ring (710);

The inner surface of the pulley outer ring (710) has a first toothed structure arranged in a circumferential direction, and the outer surface of the pulley inner liner (730) has a toothed structure meshing with the first toothed structure. Second tooth structure;

The rolling element (720) in each limiting through hole (711) is blocked by the pulley inner liner (730), so that a part of the rolling element (720) protrudes from the pulley outer ring (710)的外面;

The protruding part of the rolling body (720) is used to cooperate with the concave part on the inner surface of the transmission belt.