CN104061292B - A kind of new spatial Tooth Profile catenary system - Google Patents

Abstract

The invention discloses a novel space transmission toothed chain system, which consists of a driving sprocket, a toothed chain, an upper guide rail, a driven sprocket and a lower guide rail. The axes of the driving sprocket and the driven sprocket are in space are perpendicular to each other, and the driving sprocket and the driven sprocket are not in the same plane; the structure of the driving sprocket and the driven sprocket is the same, and the teeth adopt involute tooth profiles. Engaging with the toothed chain; the toothed chain is composed of a plurality of working chain plates connected in series through hinge ball connection elements. The invention adopts the connection mode of the sphere rotating joint, so that the chain plate can rotate in space, and the two sprockets can transmit the motion and force between two intersecting axes or interlaced axes in space, and realize the toothed chain transmission mechanism from plane motion to space motion It can be used for low speed and heavy load, harsh working environment, and other occasions where space gear transmission is not suitable.

Description

A New Space Transmission Toothed Chain System

technical field

The invention belongs to the technical field of mechanical transmission, and in particular relates to a novel space transmission toothed chain system.

technical background

Toothed chain is an important mechanical basic part that is widely used. Especially under the conditions of high speed, heavy load, low noise and large center distance, its transmission performance is better than that of belt drive, gear drive and roller chain drive. It has become one of the preferred transmission forms in many industries. In recent years, various forms of toothed chains have been more and more widely used in agriculture, metallurgy, mining, lifting transportation, ships, automobiles and other fields.

According to the shape of the pin shaft, the toothed chain is mainly divided into round pin toothed chain and rolling pin toothed chain. , there are different meshing mechanisms and meshing processes for different pin shapes and meshing methods, and with the continuous development of chain transmission technology, new, "personalized" toothed chain product series with different structural forms and different meshing mechanisms Keep coming out. However, most of the toothed chain transmissions at present realize the plane transmission, which is used to transmit the motion between parallel shafts.

The existing Chinese patent CN203009696U discloses a universal transmission chain, the chain link adopts the roller chain transmission form, but it does not design the toothed chain universal transmission system, the roller chain transmission form and the toothed chain transmission system Compared with the polygonal effect, the meshing shock and vibration are more severe.

Contents of the invention

In order to solve the problem that the existing toothed chain transmission system cannot transmit the motion and force between two intersecting shafts or staggered shafts in space, the present invention provides a new type of space transmission toothed chain system, which is used to realize the relative space between two sprockets. sports.

In order to solve the problems of the technologies described above, the present invention is realized through the following technical solutions:

A new type of space transmission toothed chain system, which is composed of a driving sprocket 1, a toothed chain 2, an upper guide rail 3, a driven sprocket 4 and a lower guide rail 5, the driving sprocket 1 and the driven sprocket 4 The axes are perpendicular to each other in space, the driving sprocket 1 and the driven sprocket 4 are not in the same plane, and the toothed chain transmission system designed in the present invention can realize the function of transmitting spatial motion and force.

The driving sprocket 1 has the same structure as the driven sprocket 4, and the gear teeth adopt involute tooth profile 10, and the involute tooth profile 10 of the sprocket and the toothed chain 2 mesh to make it a conjugate meshing transmission , The involute profile sprocket works smoothly, and the driving sprocket 1 and driven sprocket 4 are actually displaced involute cylindrical gears.

The toothed chain 2 is composed of a working chain plate 20 and a hinge ball connecting element 21. The working chain plate 20 is composed of a chain piece 200 and a bolt 201. The chain piece 200 is provided with a first bolt hole 2000, The second bolt hole 2001, the third bolt hole 2002 and the fourth bolt hole 2003, the four bolt holes have the same radius; the two ends are respectively provided with a first semi-spherical groove 2004 and a second semi-spherical groove 2005 with the same radius. The distance between the hemispherical groove 2004 and the center of the second hemispherical groove 2005 is the pitch of the chain piece 200; in the direction of the straight line where the pitch is located, the distance between the first hemispherical groove 2004 and the outside of the chain piece A first truncated-cone-shaped through hole 2006 is opened, and a second truncated-conical-shaped through-hole 2007 is opened between the second hemispherical groove 2005 and the outer side of the chain piece.

The hinged ball connection element 21 is formed by connecting the first sphere 210 and the second sphere 211 with the same radius through the connecting rod 212 in the middle. The radii of the groove 2004 and the second hemispherical groove 2005 are equal, the distance between the first sphere 210 and the center of the second sphere 211 is the pitch of the hinge ball connecting element 21, and the pitch of the hinge ball connecting element 21 is equal to the pitch of the chain piece 200. equal distance.

When installing, the center of the first sphere 210 of the hinge ball connection element 21 coincides with the center of the second hemispherical groove 2005 of the chain piece 200, and the center of the second sphere 211 coincides with the first center of the next adjacent chain piece 200. The center of the hemispherical groove 2004 coincides, and multiple chain pieces 200 are connected in series in this way, and two identical chain pieces 200 are fixed together by bolts 201 to form a working chain plate 20, and finally form a toothed chain 2 .

The upper guide rail 3 and the lower guide rail 5 have the same structure, they are smooth and twisted guide rails, and the twisting direction is the same as the movement track of the working chain plate; when the working chain plate is not meshed with the sprocket, the guide rail specifies the movement track of the working chain plate And it can reduce the lateral fluctuation of the chain plate. When the working chain plate meshes with the driving sprocket 1 and the driven sprocket 4, the guide rail ensures that the working chain plate and the sprocket are correctly meshed in place.

The beneficial effects of the present invention are:

(1) The transmission system adopts the connection mode of the sphere rotating joint, so that the chain plate can rotate in space, and the two sprockets can transmit the motion and force between the two intersecting axes or interlaced axes in space, and realize the toothed chain transmission mechanism moving from the plane Breakthrough to space movement;

(2) The present invention can realize the movement of space with a large center distance, and can be used for low-speed heavy loads, harsh working environments, and other occasions where space gear transmission is not suitable;

(3) The driving sprocket and the driven sprocket adopt involute sprocket. Compared with the straight tooth sprocket, the system works stably and has less vibration and noise when the involute sprocket rotates;

(4) The movement track of the chain plate is designed in this transmission system. The structure is simple and compact, and the transmission system is easy to install. During the movement of the sprocket, the adjacent gear teeth can be used alternately to contact and mesh with the working side of the chain plate, thereby improving the sprocket. service life.

Description of drawings

Fig. 1 is a system assembly axonometric view of the present invention;

Fig. 2 is a system assembly front view of the present invention;

Fig. 3 is a partially assembled front view of the toothed chain;

Fig. 4 is a structural schematic diagram after the toothed chain part is disassembled from the middle;

Fig. 5 is the structural representation of chain piece;

Fig. 6 is a structural schematic diagram of a hinge ball connection element;

Fig. 7 is a structural schematic diagram of the upper and lower guide rails.

In the picture:

1. Driving sprocket; 2. Toothed chain; 3. Upper guide rail; 4. Driven sprocket; 5. Lower guide rail;

10. Involute tooth profile; 20. Working chain plate; 21. Hinge ball connection element;

200, chain piece; 201, bolt; 210, first sphere; 211, second sphere; 212, connecting rod;

2000, the first bolt hole; 2001, the second bolt hole; 2002, the third bolt hole;

2003, the fourth bolt hole; 2004, the first hemispherical groove; 2005, the second hemispherical groove;

2006, the first conical through hole; 2007, the second conical through hole;

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings.

Fig. 1 is a system assembly axonometric drawing of the present invention, a kind of novel space transmission toothed chain system shown, is made up of driving sprocket 1, toothed chain 2, upper guide rail 3, driven sprocket 4 and lower guide rail 5 , the axes of the driving sprocket 1 and the driven sprocket 4 are perpendicular to each other in space, and the driving sprocket 1 and the driven sprocket 4 are not in the same plane;

As shown in Figure 1 and Figure 2, the driving sprocket 1 and the driven sprocket 4 have the same structure, and the gear teeth all adopt an involute tooth profile 10, through the involute tooth profile 10 of the sprocket and the toothed chain 2 meshing;

3 and 4 are partial schematic diagrams of the toothed chain. It can be seen that the toothed chain 2 is composed of a plurality of working chain plates 20 connected in series through hinge ball connection elements 21 .

As shown in Figure 5, the working chain plate 20 is composed of a chain piece 200 and bolts 201. The chain piece 200 is provided with a plurality of bolt holes; both ends are respectively provided with first semicircular grooves 2004 with the same radius. and the second hemispherical groove 2005, the distance between the center of the first hemispherical groove 2004 and the second hemispherical groove 2005 is the pitch of the chain sheet 200; on the direction of the straight line where the pitch is, the first semicircle A first conical through hole 2006 is formed between the spherical groove 2004 and the outer side of the chain piece, and a second conical through hole 2007 is formed between the second semicircular groove 2005 and the outer side of the chain piece.

As shown in Figure 6, the hinge ball connection element 21 is formed by connecting the first sphere 210 and the second sphere 211 with the same radius through the connecting rod 212 in the middle. The radius of the first sphere 210 and the second sphere 211 is Equal to the radius of the first hemispherical groove 2004 and the second hemispherical groove 2005, the distance between the first sphere 210 and the center of the second sphere 211 is the pitch of the hinge ball connection element 21, and the hinge ball connection element 21 pitch Equal to the pitch of the chain piece 200;

When installing, the center of the first sphere 210 of the hinge ball connection element 21 coincides with the center of the second hemispherical groove 2005 of the chain piece 200, and the center of the second sphere 211 coincides with the first center of the next adjacent chain piece 200. The center of the hemispherical groove 2004 coincides, and multiple chain pieces 200 are connected in series in this way, and two identical chain pieces 200 are fixed together by bolts 201 to form a working chain plate 20, and finally form a toothed chain 2 .

As shown in FIG. 7 , the upper guide rail 3 and the lower guide rail 5 have the same structure, they are smooth and twisted guide rails, and the twist direction is the same as the movement track of the working chain plate.

The above-described embodiments are only used to illustrate the present invention, wherein the structure of each component, connection mode, etc. all can be changed, and all equivalent transformations and improvements carried out on the basis of the technical solution of the present invention should not be excluded from the scope of the present invention. outside the scope of protection.

Claims (3)

1. A new type of space transmission toothed chain system, which consists of a driving sprocket (1), a toothed chain (2), an upper guide rail (3), a driven sprocket (4) and a lower guide rail (5). in: The axes of the driving sprocket (1) and the driven sprocket (4) are perpendicular to each other in space, and the driving sprocket (1) and the driven sprocket (4) are not in the same plane; The driving sprocket (1) has the same structure as the driven sprocket (4), and the gear teeth all adopt an involute tooth profile (10). Through the involute tooth profile (10) of the sprocket and the toothed chain ( 2) meshing; The toothed chain (2) is composed of a plurality of working chain plates (20) connected in series through hinge ball connecting elements (21); The working chain plate (20) is composed of a chain piece (200) and a bolt (201). The chain piece (200) has a plurality of bolt holes; The groove (2004) and the second hemispherical groove (2005), the distance between the center of the first hemispherical groove (2004) and the second hemispherical groove (2005) is the pitch of the chain piece (200); In the direction of the straight line where the pitch is located, a first conical through hole (2006) is opened between the first hemispherical groove (2004) and the outside of the chain piece, and between the second hemispherical groove (2005) and the outside of the chain piece A second conical through hole (2007) is opened between them. 2. A novel space transmission toothed chain system according to claim 1, characterized in that: The hinge ball connection element (21) is formed by connecting the first sphere (210) and the second sphere (211) with the same radius through the middle connecting rod (212). The first sphere (210), the second The radius of sphere (211) is equal to the radius of the first hemispherical groove (2004) and the second hemispherical groove (2005), and the distance between the first sphere (210) and the center of the second sphere (211) is hinge ball The pitch of the connecting element (21), the pitch of the hinge ball connecting element (21) is equal to the pitch of the chain piece (200); When installing, the center of the first sphere (210) of the hinge ball connection element (21) coincides with the center of the second hemispherical groove (2005) of the chain sheet (200), and the center of the second sphere (211) coincides with The center of the first hemispherical groove (2004) of the next adjacent chain piece (200) coincides, and a plurality of chain pieces (200) are connected in series in this way, and two identical chain pieces (200) are connected by bolts. (201) is fixed together and is combined into working chain plate (20), encloses toothed chain (2) at last. 3. A novel space transmission toothed chain system according to claim 1, characterized in that: The structure of the upper guide rail (3) and the lower guide rail (5) is the same, both are smooth and twisted guide rails, and the twist direction is the same as the movement track of the working chain plate.