Modular designed and assembled sprocket shaft group

Abstract

The utility model relates to a chain wheel shaft set assembled in a modularized design 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 utility model belongs to the technical field of sprocket shaft groups, and in particular relates to a sprocket shaft group assembled with modular design. Background Art

[0002] like Figure 9 The figure shows a traditional scraper conveyor sprocket shaft assembly for mining. It primarily consists of a coupling half, a shaft, two sprockets, bearings, bearing seats, seals, and locating pins. Lubrication is provided by thin oil. Its key structural features include a spline connection between the two independent sprockets and the shaft. The torque transmission sequence is as follows: the motor drives the reducer, which transmits torque to the shaft. The shaft transmits torque to the two independent sprockets via splines, which in turn drive the chain. Problems include: 1. Installation of the two independent sprockets is time-consuming and labor-intensive, as the shaft splines must uniquely align with the sprocket splines. Otherwise, the two sprockets may misalign, rendering the entire shaft assembly unusable. 2. The splines have limited torque transmission capacity, and wear between the splines increases over time, making disassembly difficult. 3. After wear in one direction, the sprockets can only be rotated 180 degrees once, limiting utilization of the sprocket material and resulting in poor economic efficiency. Utility Model Content

[0003] The utility model overcomes the deficiencies of the prior art and proposes a modularly designed and assembled sprocket shaft assembly, 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-mentioned purpose, the present invention is implemented through the following technical solutions.

[0005] A modularly designed and assembled sprocket shaft group includes a transmission shaft, which is a regular polygonal prism shaft. Multiple sprockets and multiple spacer plates are sleeved on the outside of the transmission shaft. Every two sprockets form a group, and a spacer plate is arranged between the two sprockets in the same group; a pin is respectively arranged on each edge of the transmission shaft, and the pin is located between the transmission shaft and the sprockets and the spacer plates.

[0006] Furthermore, a transmission cylinder is fixedly provided at each end of the transmission shaft, and the transmission cylinder is coaxially arranged with the transmission shaft. A set of external splines is provided 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 provided 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 ring 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 both 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 arc groove is provided on each edge of the first plug-in hole of the sprocket, and the extension direction of the outer 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 both ends passing through; the spacer disk is connected to 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 disc 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 circular array of sprockets is provided on the outer cylindrical surface of the sprocket, and a chain pocket is provided on each of the four corners of each sprocket; two sprockets in the same group drive a single chain.

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

[0015] The beneficial effects of the present invention compared to the prior art are as follows:

[0016] (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 achieved blindly, with a fast installation speed.

[0017] (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.

[0018] (3) A pin is provided between the edge of the transmission shaft and the edge of the first insertion hole of the sprocket, which can 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.

[0019] (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 procurement costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below with reference to the accompanying drawings:

[0021] Figure 1 It is a three-dimensional schematic diagram of the entire utility model;

[0022] Figure 2 It is a planar schematic diagram of the utility model as a whole;

[0023] Figure 3 It is an exploded view of the utility model;

[0024] Figure 4 It is a three-dimensional schematic diagram of the drive shaft;

[0025] Figure 5 It is a three-dimensional schematic diagram of the sprocket;

[0026] Figure 6 It is a three-dimensional schematic diagram of the spacer disc;

[0027] Figure 7 It is a schematic diagram of the cooperation between the transmission shaft and the sprocket;

[0028] Figure 8 This is a schematic diagram of the cooperation between the transmission shaft and the spacer disc;

[0029] Figure 9 It is a structural diagram of an existing sprocket shaft group;

[0030] 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

[0031] In order to make the technical problems, technical solutions, and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention and are not intended to limit the present invention. The technical solutions of the present invention will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0032] like Figure 1 As shown in FIG8 , the utility model provides a sprocket shaft assembly with modular design and assembly, including a transmission shaft 1, a sprocket plate 2, a spacer plate, and a pin 4.

[0033] The transmission shaft 1 is a regular polygonal prism, specifically a regular pentagonal prism, a regular hexagonal prism, a regular octagonal prism, etc. A transmission cylinder 5 is fixedly provided at each end of the transmission shaft 1. The transmission cylinder 5 is coaxially arranged with the transmission shaft 1. A set of external splines 6 is provided at the end of each transmission cylinder 5 away from the transmission shaft 1. The external splines 6 connect the transmission cylinder 5 to the external drive mechanism. The drive mechanism drives the transmission cylinder 5 to rotate, and the transmission cylinder 5 drives the transmission shaft 1 to rotate.

[0034] An inner arc groove 7 is provided 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 .

[0035] The sprocket 2 is an annular structure with a first insertion hole 8 formed on its inner side. This first insertion hole 8 is a regular polygonal hole with two through holes. The sprocket 2 is connected to the outer side of the transmission shaft 1 through the first insertion hole 8. The number of sides of the first insertion hole 8 is the same as the number of edges of the transmission shaft 1. Each edge of the first insertion hole 8 of the sprocket 2 is provided with an outer arc groove 9, and the extension direction of the outer arc groove 9 is consistent with the extension direction of the first insertion hole 8.

[0036] 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.

[0037] A circular array of sprocket teeth 11 is provided on the outer cylindrical surface of the sprocket 2 , and a chain pocket 12 is provided at each corner of each sprocket tooth 11 .

[0038] The spacer disk is an annular structure with a second insertion hole 13 formed on its inner side. This second insertion hole 13 is a regular polygonal hole with two through holes. The spacer disk is attached to the outer side of the transmission shaft 1 through this second insertion hole 13. The number of sides of the second insertion hole 13 matches the number of edges of the transmission shaft 1. Each edge of the second insertion hole 13 of the spacer disk is provided with an outer arc groove 9, and the extension direction of the outer arc groove 9 is consistent with the extension direction of the second insertion hole 13.

[0039] The number of the outer arc grooves 9 on the spacer disc 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.

[0040] The sprockets 2 are arranged in two groups of four, i.e., four sprockets 2 are sleeved on the outside of the transmission shaft 1, wherein the four sprockets 2 are divided into two groups of two, and two sprockets 2 adjacent to each other on the same side form a group. The two sprockets 2 in the same group drive a single chain.

[0041] The two sprockets 2 located in the middle are in contact with each other.

[0042] A spacer disc is sleeved on the outer side of the transmission shaft 1 between the two sprockets 2 in the same group, and both the two sprockets 2 in the same group are in contact with the spacer disc.

[0043] A pin 4 is inserted into the mounting groove 10 corresponding to each edge of the transmission shaft 1. 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.

[0044] When the drive shaft 1 rotates under the drive mechanism, the regular polygonal prism-shaped drive shaft 1 drives the outer sprockets 2 and the spacer disc to rotate synchronously, and the two sprockets 2 in the same group drive the chain. At the same time, because the pin 4 is provided between the edge of the drive shaft 1 and the edge of the first insertion hole 8 of the sprocket 2, stress concentration between the edges of the drive shaft 1 and the sprocket 2 is avoided when torque is transmitted, thereby extending the service life of the drive shaft 1 and the sprocket 2.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A modularly designed and assembled sprocket shaft assembly, 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 provided between the two sprockets (2) in the same group; and a pin (4) is provided on each edge of the transmission shaft (1), and the pin (4) is located between the transmission shaft (1), 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 provided at each end of the transmission shaft (1), the transmission cylinder (5) and the transmission shaft (1) are coaxially arranged, and a set of external splines (6) is provided 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 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 provided on each edge of the transmission shaft (1), and the extending direction of the inner circular arc groove (7) is consistent with the extending 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 passing through; 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 the 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 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 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 disc 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 the 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 the plurality of sprockets (2) and the transmission shaft (1) and the mounting grooves (10) between the 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 provided on the outer cylindrical surface of the chain wheel (2), and a chain nest (12) is provided 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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