Modularly designed and assembled sprocket shaft group

Abstract

The invention relates to a chain wheel shaft set designed and assembled in a modularized mode, and belongs to the technical field of chain wheel shaft sets. Comprising a transmission shaft, the transmission shaft is a regular polygon prism shaft, the outer side of the transmission shaft is sleeved with a plurality of chain wheel pieces and a plurality of spacing discs, every two chain wheel pieces form a group, and one spacing disc is arranged between every two chain wheel pieces in the same group; each edge of the transmission shaft is provided with a pin column, and the pin columns are located between the transmission shaft and the chain wheel pieces and between the transmission shaft and the spacing discs. The problems that an existing chain wheel assembly is inconvenient to install, and splines and chain wheel pieces are seriously abraded are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of sprocket shaft groups, and in particular relates to a sprocket shaft group assembled by modular design. Background Art

[0002] like Fig. 9 The figure shows the sprocket shaft group of the traditional scraper conveyor for mining, which is mainly composed of a half coupling, a shaft, two sprockets, bearings, bearing seats, seals, locating pins and other components, and is lubricated by thin oil. Its main structural features are: the connection between the two independent sprockets and the shaft is through a spline connection. The torque transmission sequence is: the motor drives the reducer, the reducer transmits the torque to the shaft, the shaft transmits the torque to the two independent sprockets through the spline, and the sprocket drives the chain. The existing problems are: 1. The installation of the two independent sprockets is time-consuming and labor-intensive, because the splines of the shaft and the splines of the sprocket must correspond uniquely, otherwise the two sprockets will have wrong teeth, causing the entire shaft group to be unusable. 2. The torque capacity transmitted by the spline is small, and the wear between the splines will increase after a period of use, making it difficult to disassemble. 3. After the sprocket is worn in one direction, it can only be adjusted 180 degrees once, and the material of the sprocket itself cannot be fully utilized, which is not economical. Summary of the invention

[0003] The invention overcomes the shortcomings of the prior art and proposes a sprocket shaft assembly assembled by modular design, thereby solving the problems of inconvenient installation of the current sprocket assembly and greater wear of the splines and sprocket plates.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions.

[0005] The sprocket shaft group assembled with modular design includes a transmission shaft, which is a regular polygonal shaft. A plurality of sprocket plates and a plurality of spacer plates are sleeved on the outer side of the transmission shaft. Every two sprocket plates form a group, and a spacer plate is arranged between the two sprocket plates in the same group; a pin is arranged on each edge of the transmission shaft, and the pin is located between the transmission shaft and the sprocket plates and the spacer plates.

[0006] Furthermore, a transmission cylinder is fixedly arranged at both ends of the transmission shaft, and the transmission cylinder is coaxially arranged with the transmission shaft. A set of external splines is arranged at the end of each transmission cylinder away from the transmission shaft, and the transmission cylinder is connected to the outer driving mechanism through the external splines.

[0007] Furthermore, an inner circular arc groove is respectively arranged on each edge of the transmission shaft, and the extending direction of the inner circular arc groove is consistent with the extending direction of the edge of the transmission shaft.

[0008] Furthermore, the sprocket is a circular structure, and a first plug-in hole is provided on the inner side of the sprocket, and the first plug-in hole is a regular polygonal through hole with two ends passing through; the sprocket is connected to the outer side of the transmission shaft through the first plug-in hole, and the number of sides of the first plug-in hole is the same as the number of edges of the transmission shaft; an outer circular arc groove is provided on each edge of the first plug-in hole of the sprocket, and the extension direction of the outer circular arc groove is consistent with the extension direction of the first plug-in hole.

[0009] Furthermore, the number of the outer arc grooves on the sprocket and the inner arc grooves on the transmission shaft are equal and correspond one to one, and the corresponding outer arc grooves and inner arc grooves form a complete arc-shaped installation groove.

[0010] Furthermore, the spacer disk is a circular ring structure, and a second plug-in hole is provided on the inner side of the spacer disk, and the second plug-in hole is a regular polygonal through hole with two ends passing through; the spacer disk is sleeved on the outer side of the transmission shaft through the second plug-in hole, and the number of sides of the second plug-in hole is the same as the number of edges of the transmission shaft; an outer arc groove is provided on each edge of the second plug-in hole of the spacer disk, and the extension direction of the outer arc groove is consistent with the extension direction of the second plug-in hole.

[0011] Furthermore, the number of the outer arc grooves on the spacer disk and the inner arc grooves on the transmission shaft are equal and correspond one to one, and the corresponding outer arc grooves and inner arc grooves form a complete arc-shaped installation groove.

[0012] Furthermore, a pin is inserted into the mounting groove corresponding to each edge of the transmission shaft, and the same pin is inserted into the mounting grooves between multiple sprockets and the transmission shaft and the mounting grooves between multiple spacer plates and the transmission shaft.

[0013] Furthermore, a circle of circular array sprockets is arranged on the outer cylindrical surface of the sprocket, and a chain pocket is arranged on the four corners of each sprocket; two sprockets in the same group drive a single chain.

[0014] Furthermore, both sprockets of the same set are in contact with the spacer plate.

[0015] The beneficial effects of the present invention compared with the prior art are as follows: (1) The torque transmission method is a regular polygonal prism design, which is characterized by large torque transmission capacity and small contact surface wear. The installation of the sprocket and the drive shaft does not require tooth alignment and can be blindly installed, which is fast.

[0016] (2) The four-piece sprocket design means that when a single sprocket is worn or damaged, only the damaged sprocket needs to be replaced, which reduces the replacement cost.

[0017] (3) A pin is provided between the edge of the transmission shaft and the edge of the first insertion hole of the sprocket, so as to avoid stress concentration between the edge of the transmission shaft and the edge of the sprocket when transmitting torque, thereby extending the service life of the transmission shaft and the sprocket.

[0018] (4) Double-cage design. A sprocket with a non-double-cage design can only be used twice, while a sprocket with a double-cage design can be used four times, which can greatly reduce purchasing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings: Figure 1 It is a three-dimensional schematic diagram of the present invention as a whole; Figure 2 It is a plan view schematic diagram of the present invention as a whole; Figure 3 is an exploded view of the present invention; Figure 4 It is a three-dimensional schematic diagram of the transmission shaft; Figure 5 It is a three-dimensional schematic diagram of the sprocket; Figure 6 It is a three-dimensional schematic diagram of the spacer disc; Figure 7 It is a schematic diagram of the cooperation between the transmission shaft and the sprocket; Figure 8 It is a schematic diagram of the cooperation between the transmission shaft and the spacer disc; Fig. 9 It is a structural schematic diagram of an existing sprocket shaft group; Among them, 1 is the transmission shaft, 2 is the sprocket, 3 is the spacer plate, 4 is the pin, 5 is the transmission cylinder, 6 is the external spline, 7 is the inner arc groove, 8 is the first plug-in hole, 9 is the outer arc groove, 10 is the installation groove, 11 is the chain tooth, 12 is the chain nest, and 13 is the second plug-in hole. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail in conjunction with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The technical solutions of the present invention are described in detail below in conjunction with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0021] like Figure 1 As shown in FIG. 8 , the present invention provides a sprocket shaft group assembled with a modular design, including a transmission shaft 1, a sprocket plate 2, a spacer plate, and a pin 4.

[0022] The transmission shaft 1 is a regular polygonal prism shaft, specifically a regular pentagonal prism, a regular hexagonal prism, a regular octagonal prism, etc. A transmission cylinder 5 is fixedly arranged at both ends of the transmission shaft 1, and the transmission cylinder 5 is coaxially arranged with the transmission shaft 1. A set of external splines 6 is arranged at one end of each transmission cylinder 5 away from the transmission shaft 1, and the transmission cylinder 5 is connected to the outer driving mechanism through the external splines 6, and the transmission cylinder 5 is driven to rotate by the driving mechanism, and the transmission shaft 1 is driven to rotate by the transmission cylinder 5.

[0023] An inner arc groove 7 is respectively arranged on each edge of the transmission shaft 1 , and the extending direction of the inner arc groove 7 is consistent with the extending direction of the edge of the transmission shaft 1 .

[0024] The sprocket 2 is a circular ring structure, and a first plug hole 8 is provided inside the sprocket 2. The first plug hole 8 is a regular polygonal through hole with two ends passing through. The sprocket 2 is sleeved on the outside of the transmission shaft 1 through the first plug hole 8. The number of sides of the first plug hole 8 is the same as the number of edges of the transmission shaft 1. An outer arc groove 9 is provided on each edge of the first plug hole 8 of the sprocket 2, and the extension direction of the outer arc groove 9 is consistent with the extension direction of the first plug hole 8.

[0025] The number of the outer arc grooves 9 on the sprocket 2 and the inner arc grooves 7 on the transmission shaft 1 are equal and correspond one to one. The corresponding outer arc grooves 9 and inner arc grooves 7 form a complete arc-shaped installation groove 10 .

[0026] A circular array of sprocket teeth 11 is arranged on the outer cylindrical surface of the sprocket wheel 2 , and a chain pocket 12 is arranged at each corner of each sprocket tooth 11 .

[0027] The spacer disk is a circular ring structure, and a second plug hole 13 is provided on the inner side of the spacer disk, and the second plug hole 13 is a regular polygon through hole with two ends penetrating. The spacer disk is sleeved on the outer side of the transmission shaft 1 through the second plug hole 13, and the number of sides of the second plug hole 13 is the same as the number of edges of the transmission shaft 1. An outer arc groove 9 is provided on each edge of the second plug hole 13 of the spacer disk, and the extension direction of the outer arc groove 9 is consistent with the extension direction of the second plug hole 13.

[0028] The number of the outer arc grooves 9 on the spacer disk and the inner arc grooves 7 on the transmission shaft 1 are equal and correspond one to one. The corresponding outer arc grooves 9 and inner arc grooves 7 form a complete arc-shaped installation groove 10 .

[0029] The sprockets 2 are arranged in two groups of four, that is, four sprockets 2 are sleeved on the outside of the transmission shaft 1, wherein the four sprockets 2 are divided into two groups in pairs, and two sprockets 2 adjacent to the same side form one group. Two sprockets 2 in the same group drive a single chain.

[0030] The two sprocket plates 2 located in the middle are in contact with each other.

[0031] A spacer disc is sleeved on the outer side of the transmission shaft 1 between the two sprockets 2 in the same group, and the two sprockets 2 in the same group are in contact with the spacer disc.

[0032] A pin 4 is inserted into the mounting groove 10 corresponding to each edge of the transmission shaft 1 , and the same pin 4 is inserted into the mounting groove 10 between the four sprockets 2 and the transmission shaft 1 and the mounting groove 10 between the two spacer plates and the transmission shaft 1 .

[0033] When the transmission shaft 1 is driven by the driving mechanism to rotate, the transmission shaft 1 of the regular polygonal shaft structure drives the outer sprocket 2 and the spacer plate to rotate synchronously, and the two sprockets 2 in the same group drive the chain to move. At the same time, since the pin 4 is arranged between the edge of the transmission shaft 1 and the edge of the first plug hole 8 of the sprocket 2, the stress concentration between the edge of the transmission shaft 1 and the edge of the sprocket 2 can be avoided when the torque is transmitted, thereby extending the service life of the transmission shaft 1 and the sprocket 2.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. The sprocket shaft assembly assembled by modular design is characterized by: The invention comprises a transmission shaft (1), wherein the transmission shaft (1) is a regular polygonal prism shaft, and a plurality of sprockets (2) and a plurality of spacer discs are sleeved on the outer side of the transmission shaft (1), wherein two sprockets (2) form a group, and a spacer disc is arranged between the two sprockets (2) in the same group; and a pin (4) is arranged on each edge of the transmission shaft (1), and the pin (4) is located between the transmission shaft (1) and the sprockets (2) and the spacer disc.

2. The modularly designed and assembled sprocket shaft assembly according to claim 1, characterized in that: A transmission cylinder (5) is fixedly arranged at each end of the transmission shaft (1), the transmission cylinder (5) being coaxially arranged with the transmission shaft (1), and a set of external splines (6) is arranged at one end of each transmission cylinder (5) away from the transmission shaft (1), and the transmission cylinder (5) is connected to an outer driving mechanism via the external splines (6).

3. The modularly designed and assembled sprocket shaft assembly according to claim 1, characterized in that: An inner circular arc groove (7) is respectively provided on each edge of the transmission shaft (1), and the extension direction of the inner circular arc groove (7) is consistent with the extension direction of the edge of the transmission shaft (1).

4. The modularly designed and assembled sprocket shaft assembly according to claim 3, characterized in that: The sprocket (2) is a circular ring structure, and a first plug hole (8) is provided on the inner side of the sprocket (2), and the first plug hole (8) is a regular polygonal through hole with two ends penetrating therethrough; the sprocket (2) is sleeved on the outer side of the transmission shaft (1) through the first plug hole (8), and the number of sides of the first plug hole (8) is the same as the number of edges of the transmission shaft (1); an outer circular arc groove (9) is provided on each edge of the first plug hole (8) of the sprocket (2), and the extension direction of the outer circular arc groove (9) is consistent with the extension direction of the first plug hole (8).

5. The modularly designed and assembled sprocket shaft assembly according to claim 4, characterized in that: The number of the outer arc grooves (9) on the sprocket (2) and the inner arc grooves (7) on the transmission shaft (1) are equal and correspond one to one, and the corresponding outer arc grooves (9) and inner arc grooves (7) form a complete arc-shaped mounting groove (10).

6. The modularly designed and assembled sprocket shaft assembly according to claim 5, characterized in that: The spacer disk is of an annular structure, and a second plug hole (13) is provided on the inner side of the spacer disk, and the second plug hole (13) is a regular polygonal through hole with two ends passing through; the spacer disk is sleeved on the outer side of the transmission shaft (1) through the second plug hole (13), and the number of sides of the second plug hole (13) is the same as the number of edges of the transmission shaft (1); an outer arc groove (9) is provided on each edge of the second plug hole (13) of the spacer disk, and the extension direction of the outer arc groove (9) is consistent with the extension direction of the second plug hole (13).

7. The modularly designed and assembled sprocket shaft assembly according to claim 6, characterized in that: The number of the outer arc grooves (9) on the spacer disk and the inner arc grooves (7) on the transmission shaft (1) are equal and correspond one to one, and the corresponding outer arc grooves (9) and inner arc grooves (7) form a complete arc-shaped mounting groove (10).

8. The modularly designed and assembled sprocket shaft assembly according to claim 7, characterized in that: A pin (4) is inserted into the mounting groove (10) corresponding to each edge of the transmission shaft (1), and the same pin (4) is inserted into the mounting grooves (10) between a plurality of chain wheels (2) and the transmission shaft (1) and the mounting grooves (10) between a plurality of spacer plates and the transmission shaft (1).

9. The modularly designed and assembled sprocket shaft assembly according to claim 4, characterized in that: A circular array of chain teeth (11) is arranged on the outer cylindrical surface of the chain wheel (2), and a chain pocket (12) is arranged at each of the four corners of the chain tooth (11); two chain wheels (2) in the same group drive a single chain.

10. The modularly designed and assembled sprocket shaft assembly according to claim 1, characterized in that: Both sprockets (2) of the same set are in contact with the spacer disc.

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