Self-locking gear shaft

Abstract

The utility model belongs to the technical field of gear shafts, and particularly relates to a self-locking gear shaft which comprises a gear shaft set and a fixing assembly arranged in the gear shaft set. The gear shaft set comprises a shaft body and an installation gear arranged on the shaft body in a sleeving mode. The mounting gear with the aperture larger than that of the shaft body can be mounted through the fixing assembly, after the shaft body is sleeved with the mounting gear, the positioning block can be clamped into the positioning hole under the action of the spring, then the arc-shaped plate base is placed on the side face of the mounting hole, and the fastening gear penetrates through the mounting hole to be connected with the locking gear in a meshed mode. Then a tool is inserted into the socket to drive the fastening gear to rotate, the locking rod rotates through the threads after the locking gear rotates, then the locking rod enters the penetrating hole till the fastening head and the screw rod are connected together, in this way, stable locking of the positioning block is achieved, and then the installation stability of the installation gear is guaranteed; the installation gear can be used according to shaft bodies with different diameters, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of gear shafts, in particular to a self-locking gear shaft. Background Art

[0002] A gear shaft refers to a mechanical part that supports rotating parts and rotates with them to transmit motion, torque or bending moment. It is generally in the shape of a metal round rod, and each section can have different diameters. The parts that perform rotating motion in the machine are installed on the shaft.

[0003] Existing gear shafts generally require the gear and shaft diameter to be the same to be fixed and used. However, under some conditions with insufficient maintenance, the gear aperture often becomes larger than the shaft diameter, making it impossible to install the gear and affecting subsequent use. Therefore, we propose a self-locking gear shaft. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] To this end, the technical solution adopted in this utility model is:

[0006] A self-locking gear shaft comprises: a gear shaft group and a fixing assembly arranged in the gear shaft group; the gear shaft group comprises a shaft body and a mounting gear sleeved on the shaft body; the fixing assembly comprises a positioning mechanism connected to the mounting gear, a locking mechanism arranged on the positioning mechanism and a lock mechanism for connecting the locking mechanism; the locking mechanism comprises a receiving hole opened in the middle of the positioning block, a locking rod clamped in the receiving hole and a locking gear threadedly connected to the outside of the locking rod and clamped in the positioning block; corresponding fastening heads and screws are respectively fixed on two groups of locking rods on the same straight line of the locking mechanism.

[0007] In a preferred example, the present invention can be further configured as follows: the positioning mechanism includes a spring connected to the mounting gear, a positioning block fixed to the end of the spring, a positioning hole opened on the shaft, and a through hole opened between the positioning holes.

[0008] In a preferred example, the present invention can be further configured as follows: the locking mechanism includes an arc-shaped plate seat pressed on the shaft body, a fastening gear movably assembled on the arc-shaped plate seat, and a socket fixed on the fastening gear.

[0009] In a preferred example, the present invention can be further configured as follows: balls are embedded on both sides of the locking gear.

[0010] In a preferred example, the present invention can be further configured as follows: a mounting hole is opened in the middle of the mounting gear, and the mounting hole is a square structure.

[0011] In a preferred example, the present invention can be further configured as follows: inclined grooves are provided on both sides of the end of the positioning block.

[0012] The above technical solution of the utility model has the following beneficial technical effects:

[0013] 1. The utility model can install the mounting gear with a hole diameter larger than the shaft body through the fixing component. After the mounting gear is sleeved on the shaft body, the positioning block will be stuck in the positioning hole under the action of the spring, and then the arc plate seat is placed on the side of the mounting hole, so that the fastening gear passes through the mounting hole and engages with the locking gear. Then, the tool is inserted into the socket to drive the fastening gear to rotate. After the locking gear rotates, the locking rod is rotated through the thread, and then the locking rod enters the through-hole until the fastening head and the screw are connected together. In this way, the positioning block is firmly locked, thereby ensuring the stability of the installation of the mounting gear, and realizing the use of the mounting gear according to shafts of different diameters, which is highly practical.

[0014] 2. Compared with the traditional method of fixing by inserting the positioning block into the positioning hole, the present invention further enhances the stability of the positioning block and the shaft through the fixing component, thereby avoiding shaking of the installed gear during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a cross-sectional view of the self-locking gear shaft of the utility model;

[0016] Figure 2 This is an enlarged view of the self-locking gear shaft A of the present invention;

[0017] Figure 3 This is a schematic diagram of the installation gear structure of the present utility model.

[0018] Reference numerals:

[0019] 100, gear shaft assembly; 110, shaft body; 120, mounting gear; 130, mounting hole;

[0020] 200, fixing assembly; 210, spring; 220, positioning block; 230, positioning hole; 240, receiving hole; 250, locking rod; 260, locking gear; 261, ball bearing; 270, fastening head; 280, screw; 290, through hole;

[0021] 310, arc-shaped plate seat; 320, fastening gear; 330, socket. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other unless there is any conflict.

[0023] A self-locking gear shaft provided by some embodiments of the present invention will be described below with reference to the accompanying drawings.

[0024] Combine Figure 1-3 As shown, the present invention provides a self-locking gear shaft, comprising: a gear shaft assembly 100 and a fixing assembly 200 disposed in the gear shaft assembly 100;

[0025] Among them, the gear shaft group 100 includes a shaft body 110 and a mounting gear 120 sleeved on the shaft body 110; the fixing assembly 200 includes a positioning mechanism connected to the mounting gear 120, a locking mechanism arranged on the positioning mechanism and a lock mechanism for connecting the locking mechanism; the locking mechanism includes a receiving hole 240 opened in the middle of the positioning block 220, a locking rod 250 clamped in the receiving hole 240 and a locking gear 260 threadedly connected to the outside of the locking rod 250 and clamped in the positioning block 220; the two sets of locking rods 250 on the same straight line of the locking mechanism are respectively fixed with matching fastening heads 270 and screws 280. Through the fixing assembly 200, the mounting gear with a hole diameter larger than the shaft body 110 can be fixed. 120 is installed. After the mounting gear 120 is sleeved on the shaft body 110, the positioning block 220 is stuck in the positioning hole 230 under the action of the spring 210, and then the arc-shaped plate seat 310 is placed on the side of the mounting hole 130, so that the fastening gear 320 passes through the mounting hole 130 and engages with the locking gear 260. Then, the tool is inserted into the socket 330 to drive the fastening gear 320 to rotate. After the locking gear 260 rotates, the locking rod 250 is rotated through the thread, and then the locking rod 250 enters the through-hole 290 until the fastening head 270 and the screw 280 are connected together. In this way, the positioning block 220 is firmly locked, thereby ensuring the stability of the installation of the mounting gear 120, and realizing the use of the mounting gear 120 according to the shaft body 110 of different diameters, which is highly practical.

[0026] Specifically, the positioning mechanism includes a spring 210 connected to the mounting gear 120, a positioning block 220 fixed to the end of the spring 210, a positioning hole 230 opened on the shaft 110 and a through-hole 290 opened between the positioning holes 230. The spring 210 can make the positioning block 220 naturally stuck in the positioning hole 230, which is a conventional design. However, this application uses a locking mechanism to further connect and fix, and then the locking rod 250 passes through the through-hole 290, and the connection is completed using a fastening head 270 and a screw 280.

[0027] Furthermore, the locking mechanism includes an arc-shaped plate seat 310 pressed on the shaft body 110, a fastening gear 320 movably assembled on the arc-shaped plate seat 310, and a socket 330 fixed on the fastening gear 320. The locking mechanism is used to loosen and tighten the locking mechanism. It has a simple structure. After the matching rotator is inserted into the socket 330, the fastening gear 320 can be driven to rotate, and the arc-shaped plate seat 310 can be stably seated on the shaft for use.

[0028] On the other hand, balls 261 are embedded on both sides of the locking gear 260 , which can further improve the smoothness of the rotation of the locking gear 260 and facilitate the docking of the fastening head 270 and the screw 280 .

[0029] Furthermore, a mounting hole 130 is provided in the middle of the mounting gear 120, and the mounting hole 130 is a square structure. The square structure facilitates the entry of the fastening gear 320 and is highly practical.

[0030] Finally, both sides of the end of the positioning block 220 are provided with inclined grooves, which can make the positioning block 220 move more smoothly along the shaft 110 and prevent it from getting stuck.

[0031] The working principle and usage process of the present invention are as follows: first, the mounting gear 120 is sleeved on the shaft body 110, and then moved to the position of the positioning hole 230, so that the positioning block 220 enters the positioning hole 230, and then the arc plate seat 310 is placed on the side of the mounting hole 130, so that the fastening gear 320 passes through the mounting hole 130 and engages with the locking gear 260, and then the tool is inserted into the socket 330 to drive the fastening gear 320 to rotate. After the locking gear 260 rotates, the locking rod 250 is rotated through the thread, and then the locking rod 250 enters the through-hole 290 until the fastening head 270 and the screw 280 are connected together, so that the positioning block 220 is firmly locked.

[0032] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A self-locking gear shaft, characterized in that: include: A gear shaft assembly (100) and a fixing assembly (200) disposed within the gear shaft assembly (100); The gear shaft assembly (100) comprises a shaft body (110) and a mounting gear (120) sleeved on the shaft body (110); The fixing assembly (200) comprises a positioning mechanism connected to the mounting gear (120), a locking mechanism provided on the positioning mechanism, and a lock mechanism for connecting the locking mechanism; The locking mechanism comprises a receiving hole (240) provided in the middle of the positioning block (220), a locking rod (250) mounted in the receiving hole (240), and a locking gear (260) threadedly connected to the outside of the locking rod (250) and mounted in the positioning block (220); The locking mechanism has two sets of locking rods (250) on the same straight line, each of which is fixed with a matching fastening head (270) and a screw rod (280).

2. The self-locking gear shaft according to claim 1, characterized in that: The positioning mechanism comprises a spring (210) connected to the mounting gear (120), a positioning block (220) fixed to the end of the spring (210), positioning holes (230) provided on the shaft (110), and a through hole (290) provided between the positioning holes (230).

3. The self-locking gear shaft according to claim 1, characterized in that: The lock mechanism comprises an arc-shaped plate seat (310) pressed on the shaft (110), a fastening gear (320) movably assembled on the arc-shaped plate seat (310), and a socket (330) fixed on the fastening gear (320).

4. The self-locking gear shaft according to claim 1, characterized in that: Balls (261) are embedded on both sides of the locking gear (260).

5. The self-locking gear shaft according to claim 1, characterized in that: A mounting hole (130) is provided in the middle of the mounting gear (120), and the mounting hole (130) is a square structure.

6. The self-locking gear shaft according to claim 1, characterized in that: Bevel grooves are provided on both sides of the end of the positioning block (220).

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