Bolt for fixing transmission shaft and gear

Abstract

The bolt for fixing the transmission shaft and the gear comprises a bolt body, the bolt body comprises a bolt head section and a bolt rod section which are integrally formed, the lower end face of the bolt rod section is upwards provided with a fixing groove, and the upper end face of the bolt head section penetrates into the bolt rod section downwards to be provided with a second fixing groove. The middle of the bottom of the fixing groove is communicated with the middle of the bottom of the second fixing groove, a second screw is inserted into the fixing groove and comprises a threaded section and an embedded section, the threaded section protrudes out of the fixing groove, a limiting piece is arranged in the second fixing groove and clamps the embedded section, and threads on the screw section and threads on the threaded section are oppositely arranged. The bolt is connected with the gear through the two sets of threads, reverse rotation of the bolt is prevented, the anti-loosening performance of the whole bolt is improved, and the stability of the bolt for connecting a transmission shaft and the gear is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a bolt for fixing a transmission shaft and a gear. Background Art

[0002] In the transmission structure, fixing the gear and the rotating shaft to realize the gear rack transmission is one of the common transmission methods. The connection between the gear and the transmission shaft is generally made by drilling a hole on the gear, arranging a fixed connection flange on the transmission shaft, and threading the bolts on the flange to the gear. However, there is a problem of bolt loosening during the rotation of the gear, and then there is a problem of transmission failure due to loose connection between the gear and the transmission shaft. Utility Model Content

[0003] The utility model aims to provide a combination bolt for fixing a transmission shaft and a gear with a stable connection in view of the deficiencies existing in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme for fixing a transmission shaft and a gear:

[0005] A bolt for fixing a transmission shaft and a gear comprises a bolt body, wherein the bolt body comprises an integrally formed bolt head section and a bolt rod section, wherein the lower end surface of the bolt rod section is upwardly provided with a fixing groove, and the upper end surface of the bolt head section is downwardly provided with a second fixing groove extending deep into the bolt rod section, wherein the middle part of the bottom of the fixing groove is connected with the middle part of the bottom of the second fixing groove, and a second screw rod is inserted in the fixing groove, wherein the second screw rod comprises a threaded section and an embedded section, wherein the threaded section protrudes from the fixing groove, and a limiting member is arranged in the second fixing groove, wherein the limiting member clamps the embedded section, and the threads on the bolt rod section and the threaded section are arranged oppositely.

[0006] A further improvement of the bolt for fixing a transmission shaft and a gear of the utility model is that the cross-section of the fixing groove is circular, the cross-section of the second fixing groove is square, the limiting member is square and fits the second fixing groove, a socket is provided on the upper end surface of the connection between the fixing groove and the second fixing groove, and a plug-in for inserting into the socket is provided on the limiting member.

[0007] A further improvement of the bolt for fixing a transmission shaft and a gear of the utility model is that a square groove is downwardly opened on the upper end surface of the embedding section, and a square plugging plate inserted into the groove is arranged on the lower end surface of the limiting member.

[0008] A further improvement of the bolt for fixing a transmission shaft and a gear in the utility model is that a horizontal notch that penetrates the bolt rod section is opened on the wall of the second fixing groove, a filling piece is arranged at the notch, the limiting piece abuts against the filling piece, anti-slip grooves are arranged on the outer side of the filling piece, and an elastic pad is arranged on the inner side, and the limiting piece abuts against the elastic pad.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model is connected with the gear through two sets of threads, so as to prevent the bolt from rotating in reverse, thereby improving the anti-loosening property of the bolt as a whole and ensuring the stability of the bolt connection transmission shaft and the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] In the figure: 1 bolt head section, 2 bolt rod section, 3 fixing groove, 4 second fixing groove, 5 second screw rod, 6 limit piece, 7 plug-in unit, 8 plug-in plate, 9 filling piece. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] like Figure 1 As shown, a bolt for fixing a transmission shaft and a gear comprises a bolt body, the bolt body comprises an integrally formed bolt head section 1 and a bolt rod section 2, a fixing groove 3 is arranged upward on the lower end surface of the bolt rod section, a second fixing groove 4 is arranged downward on the upper end surface of the bolt head section, the middle part of the bottom of the fixing groove is connected with the middle part of the bottom of the second fixing groove, a second screw 5 is inserted in the fixing groove, the second screw comprises a threaded section and an embedded section, the threaded section protrudes from the fixing groove, a limiting member 6 is arranged in the second fixing groove, the limiting member clamps the embedded section, and the threads on the bolt rod section and the threaded section are arranged oppositely. Specifically, the fixing groove has a circular cross section, the second fixing groove has a square cross section, the limiting member is square and fits the second fixing groove, a plug hole is arranged on the upper end surface of the connection between the fixing groove and the second fixing groove, and a plug-in 7 inserted into the plug hole is arranged on the limiting member. The plug-in can be covered with a cushion to increase friction and prevent upward movement during connection. A square groove is opened downward on the upper end surface of the embedded section, and a square plug-in plate 8 inserted into the groove is arranged on the lower end surface of the limiting member.

[0015] Furthermore, a horizontal notch penetrating the bolt rod section is provided on the wall of the second fixing groove, a filling piece 9 is provided at the notch, a limit piece abuts against the filling piece, an anti-slip pattern is provided on the outside of the filling piece, an elastic pad is provided on the inside, and the limit piece abuts against the elastic pad. The connected threaded hole is further abutted to achieve a stable connection.

[0016] The working principle of the utility model is as follows: threaded holes are opened on the gear, and the threaded holes include two groups, and the cross-sections of the two are T-shaped. A second screw is used to connect the inner threaded hole of the gear, and then a bolt body is used to connect the outer threaded hole. At this time, the embedded part of the second screw is inserted into the fixing groove of the bolt body, and then the limiter is inserted, so that the plug-in of the limiter is locked with the plug hole at the connection, and the plug plate of the limiter is locked with the groove of the embedded part. At this time, the bolt body and the second screw are relatively stably connected. During the rotation of the gear, the bolt will not loosen, thereby improving the connection stability.

[0017] It is obvious 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 features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A bolt for fixing a transmission shaft and a gear, characterized in that: The bolt body comprises a bolt head section and a bolt rod section which are integrally formed, a fixing groove being arranged upward on the lower end surface of the bolt rod section, a second fixing groove being arranged downward on the upper end surface of the bolt head section and extending deep into the bolt rod section, a middle part of the bottom of the fixing groove is connected with a middle part of the bottom of the second fixing groove, a second screw rod is inserted in the fixing groove, the second screw rod comprises a threaded section and an embedded section, the threaded section protrudes from the fixing groove, a limiting member is arranged in the second fixing groove, the limiting member clamps the embedded section, and the threads on the bolt rod section and the threaded section are arranged oppositely.

2. A bolt for fixing a transmission shaft and a gear according to claim 1, characterized in that: The fixing groove has a circular cross section, the second fixing groove has a square cross section, the limiting member is square and fits the second fixing groove, a plug hole is provided on the upper end surface of the connection between the fixing groove and the second fixing groove, and a plug-in inserted into the plug hole is provided on the limiting member.

3. A bolt for fixing a transmission shaft and a gear according to claim 2, characterized in that: A square groove is provided downwardly on the upper end surface of the embedding section, and a square plugging plate inserted into the groove is provided on the lower end surface of the limiting member.

4. A bolt for fixing a transmission shaft and a gear according to claim 3, characterized in that: A horizontal notch penetrating the bolt rod section is provided on the wall of the second fixing groove, a filling piece is provided at the notch, the limiting piece abuts against the filling piece, anti-slip grooves are provided on the outer side of the filling piece, an elastic pad is provided on the inner side, and the limiting piece abuts against the elastic pad.

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