AU2015101523A4

AU2015101523A4 - A Connection Structure for Gearbox Transmission Shaft and Connecting Rod

Info

Publication number: AU2015101523A4
Application number: AU2015101523A
Authority: AU
Inventors: Tujun Shen
Original assignee: Zhejiang Jinguang Solar Technology Co Ltd
Current assignee: Zhejiang Jinguang Solar Technology Co Ltd
Priority date: 2015-10-16
Filing date: 2015-10-16
Publication date: 2015-11-19
Anticipated expiration: 2023-10-16

Abstract

Title: A Connection Structure for Gearbox Transmission Shaft and Connecting Rod Abstract The invention discloses a connection structure for a gearbox transmission shaft and a connecting rod which comprises a gearbox assembly, a transmission shaft disposed on the gearbox assembly and a connecting rod connected with the end part of the transmission shaft, the end part of the transmission shaft is provided with a toothed jack, one end of the connecting rod is provided with an inner toothed sleeve corresponding to the toothed jack, and the connecting rod is linked with the transmission shaft via the sleeve-connection between the toothed jack and the inner toothed sleeve. The invention has the advantages of space saving, compact structure, stable transmission and long service life. --- -- - - -- - .. .. .. .. .. -------71 ----- -- --- -- ---- - --- -- -- - - --- -- A F, I l ---- K31 --------- --- --- --- FIGi2

Description

Description A Connection Structure for Gearbox Transmission Shaft and Connecting Rod Technical Field The invention relates to a transmission structure of a gearbox, in particular to a connection structure for a gearbox transmission shaft and a connecting rod Background of the Invention A gearbox is mainly formed by gears and shafts, generates speed and torque variation through different gear combinations, transmits out power after gear shifting via a transmission shaft, and widely applied to variable-speed output of automobiles or machine tools. To facilitate connection with other transmission parts, the transmission shaft of a gearbox usually extends a distance out of a box body, and then is connected with a transmission part via a universal joint or a shaft coupling. The prior gearbox has the defects that because the shaft body is too long, the bending of the transmission shaft is increased, and the rigidity is decreased, and the shaft body is bend or shakes frequently, resulting in decrease of transmission effect; and the transmission shaft and a transmission connection member occupy a larger internal space of equipment, so the structure is not compact. Summary of the Invention The object of the invention is to provide a connection structure for a gearbox transmission shaft and a connecting rod, having the advantages of space saving, compact structure, stable transmission and long service life. In order to realize the above object, the invention employs the following technical scheme: a connection structure for a gearbox transmission shaft and a connecting rod comprises a gearbox assembly, a transmission shaft disposed on the gearbox assembly and a connecting rod connected with the end part of the transmission shaft. The connection structure is characterized in that the end part of the transmission shaft is provided with a toothed jack, one end of the connecting rod is provided with an inner toothed sleeve corresponding to the toothed jack, and the connecting rod is linked with the transmission shaft via the sleeve-connection between the toothed jack and the inner toothed sleeve. Furthermore, the toothed jack is sleeve-connected with the inner toothed sleeve outside a gearbox body. Furthermore, the invention further comprises a fixing mechanism for axially positioning the inner toothed sleeve on the toothed jack. Preferably, the fixing mechanism comprises a positioning sleeve arranged on the gearbox body along the teeth surface of the toothed jack, an annular groove for the insertion of the inner toothed sleeve is formed between the inner circumferential surface of the positioning sleeve and the teeth surface of the toothed jack, and a fastening screw is radially penetrate-mounted on the wall of the positioning sleeve. Preferably, the fixing mechanism comprises a positioning hole arranged on the center 1 of the inner toothed sleeve and a threaded hole corresponding to the positioning hole and positioned on the center of the toothed jack, and the inner toothed sleeve is axially positioned on the toothed jack is realized by means of a screw penetrating the positioning hole and the threaded hole. Furthermore, the transmission shaft is a stepped shaft, and the shaft diameter of the transmission shaft is gradually decreased from the middle to ends. The invention not only saves material and reduces weight, but also decreases stress concentration and improves the structural strength. Furthermore, the transmission shaft is of a three steps structure. Furthermore, both ends of the transmission shaft are respectively provided with the toothed jack. Furthermore, the connecting rod is of a tabular member, the inner toothed sleeve is disposed on the surface of one end of the connecting rod, and the other end of the connecting rod is provided with a transmission protrusion for connecting an accessory. The invention has the advantages that: the transmission shaft and the connecting rod adopt a toothed structure for transmission, thereby having stable transmission, greatly reducing the length of the transmission shaft, increasing the rigidity of the shaft body, decreasing the bending of the shaft body and prolonging the service life of the transmission shaft; and the reduction of the length of the transmission shaft can save space and compacts the transmission structure. Brief Description of the Drawings The invention will be further described by combining the following drawings: FIG.1 shows the connection structure for a transmission shaft and a connecting rod of the embodiment 1 of the invention; FIG2 is an enlargement view of position A in FIG. 1; FIG3 shows the connection structure for a transmission shaft and a connecting rod of the embodiment 2 of the invention; FIG4 is an enlargement view of position B in FIG3; FIG5 is a structural view of the transmission shaft of the invention; and FIG6 is a structural diagram of the connecting rod of the invention. Detailed Description of the Invention As shown in FIG.1 and FIG2, embody 1 of the invention is as follows: a connection structure for a gearbox transmission shaft and a connecting rod comprises a gearbox assembly, a transmission shaft 2 disposed on the gearbox assembly and a connection rod 3 connected with the end part of the transmission shaft 2, the end part of the transmission shaft 2 is provided with a toothed jack 21, one end of the connecting rod 3 is provided with an inner toothed sleeve 31 corresponding to the toothed jack 21, and the connecting rod 3 is linked with the transmission shaft 2 via the sleeve-connection between the toothed jack 21 and the inner toothed sleeve 31; the toothed jack 21 is sleeve-connected with the inner toothed sleeve outside a gearbox body 1, a positioning sleeve 11 is arranged on the gearbox body 1 along the teeth 2 surface of the toothed jack 21, an annular groove for the insertion of the inner toothed sleeve 31 is formed between the inner circumferential surface of the positioning sleeve 11 and the teeth surface of the toothed jack 21, a fastening screw 4 is radially penetrate-mounted on the wall of the positioning sleeve 11, and the inner toothed sleeve 31 is axially positioned on the toothed jack 21 is realized by means of fixing the wall of the positioning sleeve 11 by the fastening screw 4.. As shown in FIG3 and FIG4, embodiment 2 of the invention is as follows: embodiment 2 is substantially the same with embodiment 1, and the difference lies in that: the center of the inner toothed sleeve 31 is provided with a positioning hole 32, the center of the toothed jack 21 is provided with a threaded hole 22 corresponding to the positioning hole 32, and the inner toothed sleeve 31 is axially positioned on the toothed jack 21 is realized by means of a screw 5 penetrating the positioning hole 22 and the threaded hole 32. As shown in FIG5 and FIG.6, the transmission shaft 2 is a stepped shaft, the shaft diameter of the transmission shaft 2 is gradually decreased from the middle to ends, preferably a three steps structure, and both ends of the transmission shaft 2 are respectively provided with the toothed jack 21. The invention not only saves material and reduces weight, but also decreases stress concentration and improves the structural strength. The connecting rod 3 is of a tabular member, the inner toothed sleeve 31 is disposed on the surface of one end of the connecting rod, and the other end of the connecting rod is provided with a transmission protrusion 33 for connecting an accessory. In addition to the above preferred embodiment, the invention has other embodiments. Various changes and modifications made by those of ordinary skill in the art according to the invention are seen to fall within the scope of the invention as defined by the appended claims without departing from the spirit of the invention. 3

Claims

1. A connection structure for a gearbox transmission shaft and a connecting rod, comprising a gearbox assembly, a transmission shaft (2) disposed on the gearbox assembly and a connecting rod (3) connected with the end part of the transmission shaft (2), characterized in that the end part of the transmission shaft (2) is provided with a toothed jack (21), one end of the connecting rod (3) is provided with an inner toothed sleeve (31) corresponding to the toothed jack (21), and the connecting rod (3) is linked with the transmission shaft (2) via the sleeve-connection between the toothed jack (21) and the inner toothed sleeve (31), the transmission shaft (2) is a stepped shaft, and the shaft diameter of the transmission shaft (2) is gradually decreased from the middle to ends, the transmission shaft (2) is of a three steps structure.

2. The connection structure for a gearbox transmission shaft and a connecting rod according to claim 1, characterized in that the toothed jack (21) is sleeve-connected with the inner toothed sleeve (31) outside a gearbox body.

3. The connection structure for a gearbox transmission shaft and a connecting rod according to claim 2, characterized by further comprising a fixing mechanism for axially positioning the inner toothed sleeve (31) on the toothed jack (21).

4. The connection structure for a gearbox transmission shaft and a connecting rod according to claim 3, characterized in that the fixing mechanism comprises a positioning sleeve (11) arranged on the gearbox body along the teeth surface of the toothed jack (21), an annular groove for the insertion of the inner toothed sleeve (31) is formed between the inner circumferential surface of the positioning sleeve (11) and the teeth surface of the toothed jack (21), and a fastening screw (4) is radially penetrate-mounted on the wall of the positioning sleeve (11).

5. The connection structure for a gearbox transmission shaft and a connecting rod according to claim 3, characterized in that the fixing mechanism comprises a positioning hole (32) arranged on the center of the inner toothed sleeve (31) and a threaded hole (22) corresponding to the positioning hole (32) and positioned on the center of the toothed jack (21), and the inner toothed sleeve (31) is axially positioned on the toothed jack (21) is realized by means of a screw (5) penetrating the positioning hole (32) and the threaded hole (22). 4