Composite gear convenient to assemble

Abstract

The utility model provides a compound gear convenient to assemble, belongs to the field of transmission structures, and solves the problems that the production efficiency is low and the precision is influenced due to the fact that an existing compound gear is produced on a gear base body in a casting mode. The gear comprises a gear base body and a gear piece, the gear piece is installed on the gear base body, a nylon gear is installed between the gear piece and the gear base body, the nylon gear is composed of four fan-shaped blocks, inserting grooves and inserting blocks are arranged on the fan-shaped blocks, a metal pipe penetrates through the fan-shaped blocks in an interference fit mode after the inserting grooves and the inserting blocks are combined, and threads are arranged in the metal pipe. The gear piece, the nylon gear and the gear base body are fixedly connected through bolts. The gear has the advantages that the gear base body, the gear piece and the nylon gear are machined separately, the nylon gear is assembled through the fan-shaped blocks, assembly line production is facilitated, production efficiency is improved, and machining precision is guaranteed; the gear piece, the nylon gear and the gear base body are fixedly connected through the bolts, connection is stable and reliable, assembly is convenient, and if parts are damaged, replacement is convenient.

Description

Technical Field

[0001] The utility model belongs to the field of transmission structures and relates to a gear, in particular to a gear. Background Art

[0002] Gear transmission is the most widely used form of mechanical transmission. It has relatively accurate transmission, high efficiency, compact structure, reliable operation and long service life.

[0003] There are nylon gears and metal gears in the existing market. In order to complement the advantages of the two gears, metal gears are usually used as the substrate and nylon gears are directly cast on the metal gears for compounding. However, nylon materials produce burrs during the casting process, affecting the accuracy of the finished product. At the same time, cast gears are difficult to process, have low production efficiency, and are easily affected by gear accuracy during the cooling process.

[0004] For example, the composite gear with application number 202020381320.7 includes a gear base made of metal material, an annular groove is provided on the outer wall of the gear base, an annular insert is cast in the annular groove, a plurality of blind holes are provided in the annular groove, inserts are cast in the blind holes, and the insert and the annular insert are integrally formed.

[0005] The above patent avoids the generation of burrs during casting by adding blind holes and inserts, but direct casting may cause gaps between the inserts and the substrate, and the production efficiency is low. Utility Model Content

[0006] The purpose of the utility model is to provide a composite gear which is easy to install and disassemble in view of the above problems existing in the prior art.

[0007] The utility model can be implemented through the following technical scheme: a composite gear that is easy to assemble, comprising a gear base and a gear plate, the gear base is provided with an axial hole, the gear base is installed with a gear plate, a nylon gear is installed between the gear base and the gear plate, a positioning block is provided on the axial hole of the gear base, a positioning groove is provided on the gear plate, a countersunk screw hole is provided on the gear plate, a blind hole is provided on the gear base, and the bolts securely connect the gear plate, the nylon gear and the gear base.

[0008] In the above-mentioned composite gear which is easy to assemble, the nylon gear is composed of four sector-shaped blocks, the sector-shaped blocks have the same angles, and two positioning grooves are provided on the sector-shaped blocks.

[0009] In the above-mentioned composite gear which is easy to assemble, an insert block is arranged at one end of the sector block, and a slot is arranged at the other end of the sector block.

[0010] In the above-mentioned composite gear which is easy to assemble, the insert block is provided with a first through hole, and the slot is provided with a second through hole.

[0011] In the above-mentioned composite gear that is easy to assemble, metal tubes are passed through the through hole one and the through hole two, the metal tubes are in interference fit with the through hole one and the through hole two, and threads are arranged inside the metal tubes.

[0012] In the above-mentioned composite gear that is easy to assemble, the bolt passes through the countersunk screw hole, the metal tube and the blind hole, and a gasket is arranged between the bolt and the countersunk screw hole.

[0013] In the above-mentioned composite gear that is easy to assemble, the gear base is made of steel.

[0014] Compared with the prior art, the utility model has the advantages that the gear base and the nylon gear made of metal are processed separately and then assembled at last. For the convenience of installation, the nylon gear is composed of fan-shaped blocks. The fan-shaped blocks have the same appearance, which is convenient for assembly line processing and production. The gear base and the fan-shaped blocks are fixedly connected by bolts, which is convenient for disassembly and installation, and the connection is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an exploded view of a compound gear for easy assembly;

[0016] Figure 2 It is a cross-sectional view of a composite gear for ease of assembly;

[0017] Figure 3 is a front view of a gear base of a composite gear for ease of assembly;

[0018] Figure 4 It is a front view of a sector block of a compound gear for easy assembly;

[0019] Figure 5 yes Figure 2 Enlarged view of the inner circle A;

[0020] Among them, 1. gear base; 11. shaft hole; 111. positioning block; 12. blind hole; 2. gear plate; 21. positioning groove 1; 22. countersunk screw hole; 3. nylon gear; 31. fan-shaped block; 311. positioning groove 2; 312. insert block; 312a. through hole 1; 313. slot; 313a. through hole 2; 4. bolt; 5. metal pipe; 51. thread; 6. gasket. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0022] like Figures 1 to 5As shown, the utility model can be implemented through the following embodiments: a composite gear comprises a gear base 1 and a gear plate 2, an axial hole 11 is provided on the gear base 1, the gear plate 2 is installed on the gear base 1, a nylon gear 3 is installed between the gear base 1 and the gear plate 2, a positioning block 111 is provided on the axial hole 11 of the gear base 1, a positioning groove 21 is provided on the gear plate 2, a countersunk screw hole 22 is provided on the gear plate 2, a blind hole 12 is provided on the gear base 1, and a bolt 4 is used to connect the gear plate 2, the nylon gear 3 and the gear base 1.

[0023] The original gear base 1 is split into a gear piece 2 and a gear base 1, a nylon gear 3 is installed between the gear piece 2 and the gear base 1, and fixed by bolts 4, so as to improve the installation efficiency, facilitate the processing of the components of the composite gear, and improve the production efficiency.

[0024] like Figure 1 and Figure 4 As shown, the nylon gear 3 is composed of four sector blocks 31, the sector blocks 31 have the same angle, and a second positioning groove 311 is provided on the sector blocks 31. The nylon gear 3 is divided into the sector blocks 31, which is convenient for processing and batch production, and improves the production speed; the second positioning groove 311 is provided to facilitate the alignment of the nylon gear 3 composed of the sector blocks 31 with the positioning block 111, and the nylon gear 3 is quickly installed on the gear base 1.

[0025] like Figure 4 As shown, an insert block 312 is provided at one end of the sector block 31, and a slot 313 is provided at the other end of the sector block 31. The design of the insert block 312 and the slot 313 facilitates the assembly of the sector block 31.

[0026] like Figure 1 and Figure 4 As shown, the insert block 312 is provided with a through hole 1 312a, and the slot 313 is provided with a through hole 2 313a. The through hole 1 312a and the through hole 2 313a are provided to facilitate the use of a connector to securely connect the slot 313 and the insert block 312 after the insert block 312 and the slot 313 are combined.

[0027] like Figure 1 , Figure 4 and Figure 5 As shown, a metal tube 5 is passed through the through hole 1 312a and the through hole 2 313a, and the metal tube 5 is in interference fit with the through hole 1 312a and the through hole 2 313a, and a thread 51 is arranged in the metal tube 5. The metal tube 5 is installed in the through hole 1 312a and the through hole 2 313a in an interference fit manner to prevent a gap between the sector block 31 and the metal tube 5, which causes the sector block 31 and the metal tube 5 to vibrate and affect the gear performance. The arrangement of the thread 51 enables the bolt 4 to fix the sector block 31, the gear base 1 and the gear piece 2 together.

[0028] like Figure 2 and Figure 5 As shown, the bolt 4 passes through the countersunk screw hole 22, the metal tube 5 and the blind hole 12, and a gasket 6 is provided between the bolt 4 and the countersunk screw hole 22. The bolt 4 passes through the countersunk screw hole 22, the metal tube 5 and the blind hole 12, and the sector block 31, the gear base 1 and the gear piece 2 are fixedly connected as a whole, so that the assembly of the composite gear is convenient, and the connection is stable and reliable. The setting of the gasket 6 prevents the bolt 4 from directly contacting the gear piece 2, causing the gear piece 2 to deform and affect the performance of the gear piece 2.

[0029] like Figure 1 and Figure 3 As shown, the gear base 1 is made of steel.

[0030] The working principle of the utility model is as follows: the insert block 312 on the sector block 31 is rotated opposite to the slot 313 of another sector block 31 and inserted, and then after the through hole 1 312a and the through hole 2 313a are aligned, the metal tube 5 is inserted, and then the assembled nylon gear 3 is placed on the gear base 1, and then the gear plate 2 is placed, and the gasket 6 is placed in the countersunk screw hole 22 on the gear plate 2, and finally the countersunk bolt 4 is installed to complete the installation of the composite gear. When disassembling, the above steps can be reversed.

[0031] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0032] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A composite gear that is easy to assemble, comprising a gear base (1) and a gear plate (2), wherein the gear base (1) is provided with an axial hole (11), and wherein: A gear plate (2) is mounted on the gear base (1), a nylon gear (3) is mounted between the gear base (1) and the gear plate (2), a positioning block (111) is arranged on the shaft hole (11) of the gear base (1), a positioning groove (21) is arranged on the gear plate (2), a countersunk screw hole (22) is provided on the gear plate (2), a blind hole (12) is provided on the gear base (1), and bolts (4) penetrate the gear plate (2), the nylon gear (3) and the gear base (1).

2. A composite gear that is easy to assemble according to claim 1, characterized in that: The nylon gear (3) is composed of four sector-shaped blocks (31), the sector-shaped blocks (31) have the same angle, and a second positioning groove (311) is provided on the sector-shaped block (31).

3. A composite gear that is easy to assemble according to claim 2, characterized in that: An insert block (312) is provided at one end of the sector block (31), and a slot (313) is provided at the other end of the sector block (31).

4. A composite gear that is easy to assemble according to claim 3, characterized in that: The insert block (312) is provided with a first through hole (312a), and the slot (313) is provided with a second through hole (313a).

5. The composite gear that is easy to assemble according to claim 4, characterized in that: A metal tube (5) passes through the first through hole (312a) and the second through hole (313a); the metal tube (5) is in interference fit with the first through hole (312a) and the second through hole (313a); and a thread (51) is provided in the metal tube (5).

6. The composite gear that is easy to assemble according to claim 1, characterized in that: The bolt (4) passes through the countersunk screw hole (22), the metal tube (5) and the blind hole (12), and a gasket (6) is provided between the bolt (4) and the countersunk screw hole (22).

7. The composite gear that is easy to assemble according to claim 1, characterized in that: The gear base (1) is made of steel.

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