CN108412995A - plane transmission mechanism - Google Patents

Abstract

A plane transmission mechanism, comprising a workbench, two driving devices arranged on the workbench, two guide rails arranged in parallel, a first transmission group and two second transmission groups corresponding to the two guide rails, the second transmission group It includes two second synchronous wheel sets installed at both ends of the corresponding guide rail and a second synchronous belt meshed with the two second synchronous wheel sets. Sliders are slidably installed on each guide rail. The sliders on each guide rail are fixedly connected so that the first transmission group can move linearly along the sliding direction of the sliders; The wheel set is also meshed with the second synchronous belt, and the two driving devices are respectively connected with the two second transmission sets for driving the second synchronous belt to drive the first synchronous wheel set to rotate and then drive the first synchronous belt to move. Compared with the prior art, the planar transmission mechanism provided by the invention has the advantages of stable transmission, low cost and simple structure.

Description

Plane transmission mechanism

technical field

The invention relates to the field of mechanical manufacturing and production, in particular to a plane transmission mechanism.

Background technique

A planar transmission mechanism is a mechanical structure that should be able to move freely in a plane, and has a very wide range of applications. For example, industries such as automobiles, ships, aerospace, and machine tool manufacturing often use planar transmission mechanisms. Specifically, in practical applications, chain transmission mechanisms, gear transmission mechanisms, worm transmission mechanisms, etc. can all realize planar transmission, but in some applications that require large transmission center moment, stable transmission, low cost, and simple structure, the above listed The transmission mechanism often cannot meet the requirements, such as the chain transmission is easy to wear, the transmission stability is poor, and additional dynamic load, vibration, impact and noise will be generated during operation. The manufacturing and installation accuracy and cost of the gear transmission are high, and it is not suitable for long-distance transmission. The worm drive has a large axial force, is prone to heat, has low efficiency, and can only drive in one direction.

Contents of the invention

The purpose of the present invention is to provide a plane transmission mechanism with stable transmission, low cost and simple structure in order to solve the problems of uneven transmission, high production cost and complex structure of the current plane transmission mechanism.

The invention provides a plane transmission mechanism, which includes a workbench, two driving devices arranged on the workbench, and two guide rails installed in parallel on the workbench according to a given distance, and the transmission mechanism also It includes: a first transmission group and two second transmission groups corresponding to the two guide rails, each of the second transmission groups includes two second synchronous wheel sets and a second synchronous belt, and the two second transmission groups Two synchronous wheel sets are installed at both ends of the corresponding guide rails, the second synchronous belt is engaged with the two second synchronous wheel sets to be arranged above the corresponding guide rails, and a slide block is slidably installed on each guide rail , the first transmission group includes a guide part, a transmission part, a loading seat and two intermediate connectors, and the two ends of the guide part are respectively fixedly connected to the slider on each guide rail through one of the intermediate connectors, so that the first transmission group can move linearly along the sliding direction of the slider; the transmission part includes a first synchronous belt and two first synchronous wheel sets respectively installed on the two intermediate connecting pieces, The loading seat is movably connected with the guiding part, the first synchronous belt is fixedly connected with the loading seat to drive the loading seat to slide on the guiding part, and the first synchronous wheel set also Engaged with the second synchronous belt, the two driving devices are respectively connected to the two second transmission groups, and are used to drive the second synchronous belt to drive the first synchronous wheel set to rotate and then drive the first synchronous wheel set to rotate. A timing belt movement.

Preferably, the guide part includes two guide rails arranged in parallel, and the two ends of the two guide rails are respectively connected to the intermediate connector.

Preferably, the loading seat includes a loading slider and a loading connector, and the loading slider is provided with two sliding through holes, and the loading sliding block passes through the two sliding through holes and the two sliding through holes. The root guide rail is movably connected; the loading connector and the loading slider are fixedly connected by screws.

Preferably, the first synchronous belt is sandwiched between the load connecting member and the load slider.

Preferably, the planar transmission mechanism further includes two wrap angle adjustment devices, and the two wrap angle adjustment devices are fixedly connected with the intermediate connecting piece for connecting the second synchronous belt to the second synchronous wheel. The wrapping angle of the group is limited to be greater than or equal to a preset angle.

Preferably, both the first synchronous wheel set and the second synchronous wheel set are composed of two synchronous wheels mounted on the same installation shaft.

Preferably, the first synchronous belt and the second synchronous belt are trapezoidal tooth synchronous belts or arc tooth synchronous belts.

The planar transmission mechanism provided by the present invention realizes the movement of the object in the plane by driving two vertically arranged transmission groups through the belt drive, and adopts the mode of belt transmission to realize the movement of the planar transmission mechanism, which is different from the planar transmission mechanism of the prior art. Compared with the invention, the transmission is more stable, the cost is low and the structure is simple, which is convenient for manufacturing and installation.

Other features and advantages of the present invention will be described in detail in the detailed description that follows.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the description, together with the following specific embodiments, are used to explain the present application, but do not constitute a limitation to the present application. In the attached picture:

Fig. 1 is a schematic structural diagram of a planar transmission mechanism according to a preferred embodiment of the present invention.

Explanation of reference signs

10 Workbench 20 The first transmission group

30 Second transmission group 40 Driving device

50 intermediate connector 60 guide rail

70 sliders 80 loading seats

90 wrap angle adjustment device 200 transmission part

202 The first synchronous belt 203 Guide rail

205 The first synchronous wheel set 210 Guide part

301 The second synchronous belt 304 The second synchronous wheel set

801 loading slider 802 loading connector

Detailed ways

The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

In this application, unless stated otherwise, the used orientation words such as "up, down, left, and right" generally refer to up, down, left, and right as shown with reference to the accompanying drawings. "Inner and outer" refer to inner and outer relative to the outline of each component itself.

As shown in Figure 1, the present invention provides a plane transmission mechanism, including a workbench 10, two driving devices 40 arranged on the workbench 10, and two driving devices 40 installed in parallel on the workbench 10 according to a given distance. The two guide rails 60 on the plane transmission mechanism also include: a first transmission group 20 and two second transmission groups 30 corresponding to the two guide rails 60, each of the second transmission groups 30 includes two The second synchronous wheel set 304 and a second synchronous belt 301, the two second synchronous wheel sets 304 are installed at the two ends of the corresponding guide rail 60, the second synchronous belt 301 and the two second synchronous wheels The group 304 is engaged to be arranged above the corresponding guide rails 60, and a slide block 70 is slidably installed on each guide rail 60. The first transmission group 20 includes a guide part 210, a transmission part 200, a loading seat 80 and two An intermediate connecting piece 50, the two ends of the guide part 210 are fixedly connected to the slider 70 on each guide rail 60 through an intermediate connecting piece 50, so that the first transmission group 20 can move along the sliding block 70 linear motion in the sliding direction; the transmission part 200 includes a first synchronous belt 202 and two first synchronous wheel sets 205 respectively installed on the two intermediate connectors 50, the loading seat 80 and the The guide part 210 is movably connected, the first synchronous belt 202 is fixedly connected with the loading seat 80 to drive the loading base 80 to slide on the guide part 210, and the first synchronous wheel set 205 is also connected with the The second synchronous belt 301 is meshed, and the two driving devices 40 are respectively connected with the two second transmission groups 30, and are used to drive the second synchronous belt 301 to drive the first synchronous wheel set 205 to rotate and then drive The first synchronous belt 202 moves.

Wherein, the present invention adopts the mode of belt transmission to realize the movement of the plane transmission mechanism, that is, the second synchronous wheel set 304 in the second transmission group 30 drives the second synchronous belt 301 to move, and then the second synchronous belt 301 drives the first synchronous belt 301 to move. The wheel set 205 rotates, thereby driving the first transmission group 20 to move linearly along the sliding direction of the slider 70 on the guide rail 60. The second synchronous belt 301 not only drives the first transmission group 20 to perform linear motion, but also drives the first transmission group 20 to move linearly. The rotation of the synchronous wheel set 205 drives the first synchronous belt 202 to move, and further drives the storage seat 80 to move linearly on the guide portion 210 .

In one embodiment, referring to FIG. 1 , preferably, the guide part 210 includes two guide rails 203 arranged in parallel, and two ends of the two guide rails 203 are respectively connected to the intermediate connecting member 50 . The arrangement of two guide rails 203 can improve the overall rigidity of the planar transmission mechanism, and at the same time make the storage seat 80 sleeved on the two guide rails 203 not overturn and be more stable. When it is necessary to drive the storage seat 80 to slide on the guide rail 203, the driving sequence is as follows: the driving device 40 drives the second synchronous wheel set 304 to rotate, and the second synchronous wheel set 304 drives the second synchronous belt 301 to move , the second synchronous belt 301 drives the first synchronous wheel set 205 to rotate, and the first synchronous wheel set 205 drives the first synchronous belt 202 to move, that is, to drive the storage seat 80 fixed with the first synchronous belt 202 to slide on the guide rail 203 . Those skilled in the art can understand that the present invention does not limit the cross-sectional shape of the guide rail 203 , for example, the cross-sectional shape of the guide rail 203 may be circular, square, trapezoidal, etc.

In the planar transmission mechanism of the present invention, in order to facilitate the assembly of the loading seat 80, preferably, the loading base 80 includes a loading slider 801 and a loading connecting piece 802, and the loading slider 801 is provided with Two sliding through holes, the loading slider 801 is movably connected with the two guide rails 203 through the two sliding through holes; the loading connecting piece 802 and the loading slider 801 are fixed by screws connect. The loading connector 802 is used as an intermediate connector to fix the object that needs to move in a plane on the loading connector 802. When the first synchronous belt 202 drives the storage seat 80 to move, the fixed Objects on the loading connector 802 also move accordingly.

In order to fix the storage seat 80 and the first synchronous belt 202 , preferably, the first synchronous belt 202 is sandwiched between the load connecting member 802 and the load slider 801 . The loading connector 802 is not only responsible for arranging the object that needs to move in a plane, but also plays a role of fixing the first synchronous belt 202 . In one embodiment, two unclosed synchronous belt installation grooves with the same width as the first synchronous belt 202 can be set on the loading connector 802, and the depth of the synchronous belt installation groove is smaller than that of the first synchronous belt 202. The thickness of the synchronous belt 202, after the first synchronous belt 202 is embedded in the synchronous belt installation groove, the loading connector 802 is press-fitted on the loading slider 801 to ensure that the first The synchronous belt 202 is clamped between the loading connecting piece 802 and the loading slider 801, and the clamping force between the loading connecting piece 802 and the loading sliding block 801 fixes the first The way of a synchronous belt 202 is more reliable, and those skilled in the art can understand that the synchronous belt installation slot can also be opened on the loading slider 801 to fix the first synchronous belt 202 . In another embodiment, matching mounting holes can be directly reserved on the first timing belt 202 and the loading connector 802, and screws are screwed into the mounting holes to screw the first timing belt 202 and the load connector 802 are fixed to realize the fixing of the first synchronous belt 202 .

In order to ensure that there is sufficient friction between the synchronous belt and the synchronous belt pulley in the synchronous belt drive, and avoid the occurrence of belt slippage, preferably, the plane transmission mechanism also includes two wrap angle adjustment devices 90, the two The wrap angle adjusting device 90 is fixedly connected with the intermediate connecting member 50, and is used to limit the wrap angle between the second synchronous belt 301 and the first synchronous wheel set 205 to be greater than or equal to a preset angle. In belt transmission, the preset angle is usually set to 120°. In belt transmission, if the wrap angle is smaller, the contact arc length between the second synchronous belt 301 and the first synchronous pulley set 205 will be shorter, and the length of the contact arc length will affect the second synchronous belt. 301 and the size of the friction force generated between the contact surface of the first synchronous wheel set 205, if the friction force is too small, the belt will easily slip during the transmission process. In order to ensure the normal operation of the belt transmission, it is necessary to control the wrap angle Greater than or equal to 120°. In one embodiment, the wrap angle adjusting device 90 includes a tension wheel for adjusting the tension of the second synchronous belt 301, and the tension exerted by the tension wheel on the second synchronous belt 301 is adjusted The spring force or hydraulic pressure transmitted from the spring or oil pressure in the wrap angle adjusting device 90 to the tensioning wheel tightens the second synchronous belt 301 so that the second synchronous belt 301 can work with an appropriate pressure.

In one embodiment, preferably, both the second synchronous wheel set 304 and the first synchronous wheel set 205 are composed of two synchronous wheels installed on the same installation shaft. Install two synchronous wheels on the same shaft, and the rotation of any synchronous wheel will drive the other synchronous wheel to rotate through the shaft, so that both synchronous wheels can be used as driving wheels to drive the other synchronous wheel to move. This structure Assembly is flexible. Both the second synchronous wheel set 304 and the first synchronous wheel set 205 can be selected as standard parts, without non-standard production. In this embodiment, as shown in Figure 1, the drive device 40 drives the first The two synchronous wheel sets 304 rotate, and in the technical solution provided by the present invention, the tension of the second synchronous belt 301 can be adjusted by adjusting the distance between the two second synchronous wheel sets 304 . In another embodiment, both the second synchronous wheel set 304 and the first synchronous wheel set 205 can be formed in one piece, and the driving device 40 can drive the second synchronous wheel set 304 through a rigid connection. For example, the second synchronous wheel set 304 is installed on the drive shaft of the driving device 40 , and when the driving device 40 works, the second synchronous wheel set 304 is directly driven to move through the drive shaft.

In synchronous belt transmission, preferably, the second synchronous belt 301 and the first synchronous belt 202 are trapezoidal toothed synchronous belts or arc toothed synchronous belts.

The planar transmission mechanism provided by the present invention realizes the movement of the object in the plane by driving two vertically arranged transmission groups through belt transmission. Specifically, the transmission components are the first transmission group and the second transmission group, and the first transmission group The second transmission group includes a second synchronous wheel set and a second synchronous belt installed at both ends of the corresponding guide rail. In the technical solution of the present invention, two sets of second transmission groups and two guide rails are provided. The end is fixed with the slider installed on the guide rail through the intermediate connecting piece, the transmission part in the first transmission group includes the first synchronous belt and the first synchronous wheel set, the first synchronous wheel set and the first synchronous wheel set A synchronous belt meshes with the second synchronous belt at the same time, the carrier is fixed to the first synchronous belt and the carrier can slide on the guide part in the first transmission group, when the driving device drives the second transmission When the second synchronous wheel set in the group rotates, the second synchronous wheel set drives the second synchronous belt to move, and the second synchronous belt drives the entire first transmission set along the The sliding direction of the slider moves linearly, and at the same time, the second synchronous belt drives the first synchronous wheel set to rotate, and the first synchronous wheel set drives the first synchronous belt to move and then drives the loading seat to move Linear sliding is performed on the guide part, and the plane transmission mechanism provided by the present invention is driven by a pulley. Compared with the plane transmission mechanism in the prior art, the transmission is more stable, the cost is low, the structure is simple, and it is convenient for manufacture and installation.

The preferred embodiment of the present invention has been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the specific details of the above embodiment, within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, These simple modifications all belong to the protection scope of the present invention.

In addition, it should be noted that the various specific technical features described in the above specific implementation manners may be combined in any suitable manner if there is no contradiction. In order to avoid unnecessary repetition, various possible combinations are not further described in the present invention.

In addition, any combination of various implementations of the present application can also be made, as long as they do not violate the idea of the present application, they should also be regarded as the content disclosed in the present application.

Claims (7)

1. A plane transmission mechanism, comprising a workbench (10), two driving devices (40) arranged on the workbench (10), and being installed in parallel on the workbench (10) according to a given distance The two guide rails (60) on the upper surface are characterized in that the planar transmission mechanism also includes: a first transmission group (20) and two second transmission groups (30) corresponding to the two guide rails (60), Each of the second transmission groups (30) includes two second synchronous wheel sets (304) and a second synchronous belt (301), and the two second synchronous wheel sets (304) are installed on corresponding guide rails ( 60), the second synchronous belt (301) is engaged with the two second synchronous wheel sets (304) to be arranged above the corresponding guide rail (60), on each guide rail (60) A slider (70) is slidably installed, and the first transmission group (20) includes a guide part (210), a transmission part (200), a loading seat (80) and two intermediate connectors (50), and the guide The two ends of the part (210) are fixedly connected to the slider (70) on each guide rail (60) through one of the intermediate connecting pieces (50), so that the first transmission group (20) can move along the The sliding direction of the slider (70) moves linearly; the transmission part (200) includes a first synchronous belt (202) and two first synchronous wheel sets ( 205), the loading seat (80) is movably connected with the guide part (210), and the first synchronous belt (202) is fixedly connected with the loading base (80) to drive the loading base ( 80) Sliding on the guide part (210), the first synchronous wheel set (205) is also engaged with the second synchronous belt (301), and the two driving devices (40) are respectively connected with the two The second transmission group (30) is connected to drive the second synchronous belt (301) to drive the first synchronous wheel set (205) to rotate and then drive the first synchronous belt (202) to move. 2. The planar transmission mechanism according to claim 1, characterized in that, the guide portion (210) comprises two guide rails (203) arranged in parallel, and the two ends of the two guide rails (203) are respectively connected to The intermediate connectors (50) are connected. 3. The planar transmission mechanism according to claim 2, characterized in that, the loading seat (80) comprises a loading slider (801) and a loading connector (802), and the loading slider (801 ) are provided with two sliding through holes, and the loading slider (801) is flexibly connected with the two guide rails (203) through the two sliding through holes; the loading connecting piece (802) and The loading slider (801) is fixedly connected by screws. 4. The planar transmission mechanism according to claim 3, characterized in that, the first synchronous belt (202) is interposed between the loading connector (802) and the loading slider (801) . 5. The plane transmission mechanism according to claim 1, characterized in that, the plane transmission mechanism further comprises two wrap angle adjustment devices (90), and the two wrap angle adjustment devices (90) are connected to the middle A component (50) is fixedly connected, and is used to limit the wrap angle between the second synchronous belt (301) and the first synchronous wheel set (205) to be greater than or equal to a preset angle. 6. The planar transmission mechanism according to claim 1, characterized in that, both the second synchronous wheel set (304) and the first synchronous wheel set (205) are composed of two Composition of synchronous wheels. 7. The planar transmission mechanism according to claim 1, characterized in that, the second synchronous belt (301) and the first synchronous belt (202) are trapezoidal tooth synchronous belts or arc tooth synchronous belts.