Gear structure convenient to assemble

Abstract

The utility model discloses a gear structure convenient to assemble, which belongs to the field of gear structures, and comprises a gear body and a gear shaft, an arranged fixing mechanism is matched with the gear body for use, and after the gear body is positioned and sleeved on the gear shaft through a mounting hole and a positioning block on the inner wall of the mounting hole, the gear body is fixed on the gear shaft. The rotary knob located on the outer wall of the fixing ring at the front end of the gear body is rotated, the rotary knob rotates along the outer threads on the fixing ring through the inner threads and moves backwards, when the rotary knob is continuously rotated and moved, the rotary knob extrudes the extrusion head protruding out of the outer wall of the fixing ring, and the extrusion head enters the through hole after being extruded. When the rotary knob is rotated, a movable rod is pushed to move downwards, the movable rod pushes an arc-shaped plate to move downwards, a compression spring is forced to stretch until the arc-shaped plate is tightly attached to the outer wall of the gear shaft, a clamping block is inserted into a clamping groove, and after the rotary knob cannot be rotated, a gear body can be fixedly installed on the gear shaft; therefore, the purpose of conveniently and quickly assembling and using the gear body is achieved.

Description

Technical Field

[0001] The utility model relates to the field of gear structures, and particularly relates to a gear structure convenient for assembly. Background Art

[0002] A gear is a mechanical element that can mesh with each other and transmit rotational motion and power. They transmit torque through the continuous contact of gear teeth, enabling two or more shafts to rotate synchronously at a specific speed. The design of gears allows mechanical systems to achieve precise speed conversion, power transmission, and direction change, and is widely used in various mechanical equipment, such as automobiles, machine tools, clocks, etc.

[0003] In the prior art, the assembly of a gear and a gear shaft is a crucial and delicate process, which directly affects the performance and service life of gear transmission. For a gear fixed on a shaft, it is generally in a transition fit or interference fit with the shaft. When the interference amount is small, it can be knocked in with manual tools; when the interference amount is large, a press is required for press-fitting; when the interference amount is very large, a thermal expansion method or a hydraulic sleeve method can be used for assembly. However, no matter which of the above assembly methods is adopted, it is necessary for manual workers to use auxiliary tools to assemble the gear on the gear shaft for use, resulting in troublesome operation when fixing the gear, and when the gear wears or is damaged during long-term use and needs to be replaced, it is not convenient to disassemble the gear from the gear shaft, thus bringing inconvenience to the assembly and disassembly operations of the gear and reducing work efficiency. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a gear structure convenient for assembly, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A gear structure convenient for assembly includes a gear body and a gear shaft. The gear body is fixedly connected to the gear shaft through a fixing mechanism, and the fixing mechanism includes a fixing ring, a knob, an arc-shaped plate, a pressing head, a compression spring, and a clamping block. The fixing ring is fixedly connected to the front wall of the gear body, and the knob is movably connected to the outside of the fixing ring through internal threads on the inner wall of a sleeve hole opened on the front wall. The two arc-shaped plates are respectively movably connected to the top and bottom of the inside of the fixing ring through movable rods on the outer side walls, and the pressing head is fixedly connected to the outer end of the movable rod. The compression spring is sleeved on the outside of the movable rod and fixedly connected between the fixing ring and the arc-shaped plate, and the clamping block is fixedly connected to the inner side wall of the arc-shaped plate.

[0007] Preferably, a set of left-right symmetric positioning grooves are opened on the outer wall of the gear shaft, and a set of up-down symmetric clamping grooves are also opened on the outer wall of the gear shaft.

[0008] Preferably, an installation hole is formed on the front wall of the gear body, and a positioning block corresponding to the positioning groove is fixedly installed on the inner wall of the installation hole.

[0009] Preferably, the fixing ring is fixedly installed on the front wall of the gear body, and an external thread is fixedly installed on the outer wall of the fixing ring. A retaining ring is fixedly installed at the front end of the fixing ring.

[0010] Preferably, a sleeve hole is formed on the front end wall of the knob, and an internal thread threadedly connected to the external thread is fixedly installed on the inner wall of the sleeve hole.

[0011] Preferably, a set of upper and lower symmetric through holes are further formed on the outer wall of the fixing ring. A movable rod is fixedly installed on the outer side wall of the arc-shaped plate. The movable rod is inserted into the through hole, and an extrusion head is fixedly installed at the outer end of the movable rod. The compression spring is sleeved on the rod body of the movable rod, and the compression spring is also fixedly installed between the outer wall of the arc-shaped plate and the inner wall of the fixing ring. A clamping block corresponding to the clamping groove is fixedly installed on the inner side wall of the arc-shaped plate.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, with the fixing mechanism cooperating with the use of the gear body, after the gear body is positioned and sleeved on the gear shaft through the installation hole and the positioning block on the inner wall of the installation hole, rotate the knob on the outer wall of the fixing ring at the front end of the gear body. The knob will rotate and move backward along the external thread on the fixing ring through the internal thread. When continuously rotating and moving the knob, the knob will squeeze the protruding extrusion head on the outer wall of the fixing ring. After being squeezed, the extrusion head will enter the through hole and push the movable rod to move downward. The movable rod will push the arc-shaped plate to move downward and force the compression spring to stretch until the arc-shaped plate is closely attached to the outer wall of the gear shaft and the clamping block is inserted into the clamping groove. Until the knob cannot be rotated, the gear body can be installed and fixed on the gear shaft, so as to achieve the purpose of facilitating the quick assembly and fixing of the gear body on the gear shaft for use, and facilitating disassembly after the gear body is worn or damaged. Furthermore, it is convenient for the assembly and disassembly of the gear body on the gear shaft and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 is a schematic diagram of the overall structure of the gear shaft of the utility model;

[0016] Figure 3 is a schematic diagram of the overall structure of the gear body of the utility model;

[0017] Figure 4Schematic diagram of the structural disassembly of the fixing mechanism of the present utility model.

[0018] In the figure: 1, gear body; 2, gear shaft; 3, fixing mechanism; 4, positioning groove; 5, clamping groove; 6, mounting hole; 7, positioning block; 8, fixing ring; 9, external thread; 10, retaining ring; 11, knob; 12, sleeve hole; 13, internal thread; 14, through hole; 15, arc-shaped plate; 16, movable rod; 17, extrusion head; 18, compression spring; 19, clamping block. Specific implementation mode

[0019] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation modes.

[0020] As Figure 1 - Figure 4 shown, a gear structure convenient for assembly includes a gear body 1 and a gear shaft 2. The gear body 1 is fixedly connected to the gear shaft 2 through a fixing mechanism 3, and the fixing mechanism 3 includes a fixing ring 8, a knob 11, an arc-shaped plate 15, an extrusion head 17, a compression spring 18 and a clamping block 19. The fixing ring 8 is fixedly connected to the front wall of the gear body 1, and the knob 11 is movably connected to the outside of the fixing ring 8 through an internal thread 13 on the inner wall of a sleeve hole 12 opened on the front wall. Two arc-shaped plates 15 are respectively movably connected to the top and bottom of the inside of the fixing ring 8 through movable rods 16 on the outer side walls, and the extrusion head 17 is fixedly connected to the outer end of the movable rod 16. The compression spring (18) is sleeved on the outside of the movable rod 16 and fixedly connected between the fixing ring 8 and the arc-shaped plate (15), and the clamping block 19 is fixedly connected to the inner side wall of the arc-shaped plate 15.

[0021] As Figure 2 shown, a set of left and right symmetric positioning grooves 4 are opened on the outer wall of the gear shaft 2, and a set of upper and lower symmetric clamping grooves 5 are also opened on the outer wall of the gear shaft 2. The positioning grooves 4 opened on the gear shaft 2 are used to cooperate with the positioning blocks 7 to position and install the gear body 1, and the opened clamping grooves 5 are used to cooperate with the clamping blocks 19 to limit and install the gear body 1;

[0022] As Figure 3 shown, a mounting hole 6 is opened on the front wall of the gear body 1, and a positioning block 7 corresponding to the positioning groove 4 is fixedly installed on the inner wall of the mounting hole 6. When the gear body 1 is sleeved onto the gear shaft 2 through the mounting hole 6, the positioning block 7 is aligned with the positioning groove 4 and the positioning block 7 is inserted into the positioning groove 4. In this way, the gear body 1 can be quickly positioned and installed onto the gear shaft 2;

[0023] As Figure 4As shown, the fixed ring 8 is fixedly installed on the front wall of the gear body 1, and an external thread 9 is fixedly installed on the outer wall of the fixed ring 8. A retaining ring 10 is fixedly installed at the front end of the fixed ring 8. The external thread 9 opened on the outer wall of the fixed ring 8 is used to cooperate with the internal thread 13 on the inner wall of the socket hole 12 opened on the knob 11 to achieve a threaded rotation operation. The retaining ring 10 at the front end of the fixed ring 8 can limit the knob 11 and prevent the knob 11 from being unscrewed from the fixed ring 8;

[0024] As Figure 4 shown, a socket hole 12 is opened on the front wall of the knob 11, and an internal thread 13 threadedly connected to the external thread 9 is fixedly installed on the inner wall of the socket hole 12. After the knob 11 is sleeved on the outside of the fixed ring 8 through the socket hole 12, it will be threadedly connected together through the internal thread 13 and the external thread 9. Rotating the knob 11 can make the knob 11 rotate threadedly along the external thread 9 on the outside of the fixed ring 8 through the internal thread 13 and move backward;

[0025] As Figure 4 shown, a set of vertically symmetrical through holes 14 are also opened on the outer wall of the fixed ring 8. A movable rod 16 is fixedly installed on the outer side wall of the arc-shaped plate 15. The movable rod 16 is inserted into the through hole 14, and an extrusion head 17 is fixedly installed at the outer end of the movable rod 16. A compression spring 18 is sleeved on the rod body of the movable rod 16, and the compression spring 18 is also fixedly installed between the outer wall of the arc-shaped plate 15 and the inner wall of the fixed ring 8. A clamping block 19 corresponding to the clamping groove 5 is fixedly installed on the inner side wall of the arc-shaped plate 15. When the knob 11 is continuously moving backward, it will squeeze the extrusion heads 17 protruding from the upper and lower sides of the outer wall. After being squeezed, the extrusion heads 17 will enter the through hole 14 and push the movable rod 16 to move downward. The movable rod 16 pushes the arc-shaped plate 15 to move downward and forces the compression spring 18 to stretch until the arc-shaped plate 15 closely adheres to the outer wall of the gear shaft 2 and the clamping block 19 is inserted into the clamping groove 5. In this way, the gear body 1 can be quickly assembled and fixed on the gear shaft 2.

[0026] It should be noted that the present utility model is a gear structure convenient for assembly. When assembling the gear body 1 on the gear shaft 2 for use, the gear body 1 is sleeved onto the gear shaft 2 through the mounting hole 6 opened on the front end wall of the gear body 1. During the sleeving process, the positioning block 7 mounted on the inner wall of the mounting hole 6 is aligned with the positioning groove 4 opened on the outer wall of the gear shaft 2, and the positioning block 7 is inserted into the positioning groove 4. In this way, the gear body 1 can be quickly positioned and sleeved onto the gear shaft 2. Then, rotate the knob 11 mounted on the outer wall of the fixing ring 8 at the front end of the gear body 1. The knob 11 will perform a threaded rotation and movement operation along the external thread 9 mounted on the outer wall of the fixing ring 8 through the internal thread 13 on the inner wall of the sleeve hole 12 opened on the front wall. After continuously rotating the knob 11, the knob 11 will move backward. When the knob 11 moves backward to a certain extent, the knob 11 will squeeze the extrusion heads 17 protruding above and below the outer wall of the fixing ring 8. After being squeezed by the knob 11, the extrusion heads 17 will enter the corresponding through holes 14 opened on the outer wall of the fixing ring 8. During this process, the extrusion heads 17 will push the movable rod 16 to move the movable rod 16 inward along the through hole 14, and the movable rod 16 will push the arc-shaped plate 15 downward, and force the compression spring 18 sleeved on the rod body of the movable rod 16 and fixedly installed between the outer wall of the arc-shaped plate 15 and the inner wall of the fixing ring 8 to perform an extension operation. When the knob 11 completely covers the through hole 14 and cannot be rotated, the arc-shaped plate 15 will closely adhere to the outer wall of the gear shaft 2, and the clamping block 19 mounted on the inner side wall of the arc-shaped plate 15 will be inserted into the clamping groove 5. In this way, the gear body 1 can be quickly assembled and fixed on the gear shaft 2 for use. When the gear body 1 is worn or damaged after long-term use and needs to be disassembled and replaced, the knob 11 can be rotated in the reverse direction to move the knob 11 forward. And under the action of the installation at the front end of the fixing ring 8, it can prevent the knob 11 from moving out of the fixing ring 8. Until the knob 11 no longer blocks the through hole 14, the compression spring 18 will perform an elastic recovery and extension operation, and drive the arc-shaped plate 15 to move outward, make the movable rod 16 move along the through hole 14 to make the extrusion heads 17 at the outer end protrude from the through hole 14. At the same time, make the clamping block 19 move out of the clamping groove 5. Finally, the gear body 1 can be disassembled and removed from the gear shaft 2, thereby achieving the purpose of facilitating the assembly and disassembly of the gear body 1 on the gear shaft 2 and improving the work efficiency.

[0027] The above is only the preferred embodiment of the present utility model and is not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, various improvements can be made to it without departing from the scope of the present utility model, and components therein can be replaced with equivalents, or some of the technical features can be equivalently replaced. All within the spirit and principle of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gear structure that is easy to assemble, comprising a gear body (1) and a gear shaft (2), characterized in that: The gear body (1) is fixedly connected to the gear shaft (2) via a fixing mechanism (3), and the fixing mechanism (3) comprises a fixing ring (8), a knob (11), an arc plate (15), an extrusion head (17), a compression spring (18) and a clamping block (19). The fixing ring (8) is fixedly connected to the front wall of the gear body (1), and the knob (11) is movably connected to the outside of the fixing ring (8) via an internal thread (13) on the inner wall of a sleeve hole (12) provided on the front wall. The two arc plates (15) are movably connected to the inner top surface and bottom surface of the fixing ring (8) via movable rods (16) on the outer side walls, respectively, and the extrusion head (17) is fixedly connected to the outer end of the movable rod (16). The compression spring (18) is sleeved on the outside of the movable rod (16) and fixedly connected between the fixing ring (8) and the arc plate (15), and the clamping block (19) is fixedly connected to the inner side wall of the arc plate (15).

2. A gear structure that is easy to assemble according to claim 1, characterized in that: A group of left-right symmetrical positioning grooves (4) are provided on the outer wall of the gear shaft (2), and a group of up-down symmetrical clamping grooves (5) are also provided on the outer wall of the gear shaft (2).

3. A gear structure that is easy to assemble according to claim 2, characterized in that: A mounting hole (6) is provided on the front wall of the gear body (1), and a positioning block (7) corresponding to the positioning groove (4) is fixedly mounted on the inner wall of the mounting hole (6).

4. A gear structure that is easy to assemble according to claim 3, characterized in that: The fixing ring (8) is fixedly mounted on the front wall of the gear body (1), and an external thread (9) is fixedly mounted on the outer wall of the fixing ring (8). A retaining ring (10) is fixedly mounted on the front end of the fixing ring (8).

5. A gear structure that is easy to assemble according to claim 4, characterized in that: A sleeve hole (12) is provided on the front end wall of the knob (11), and an internal thread (13) threadably connected to the external thread (9) is fixedly mounted on the inner wall of the sleeve hole (12).

6. A gear structure that is easy to assemble according to claim 5, characterized in that: The outer wall of the fixing ring (8) is also provided with a group of vertically symmetrical through holes (14), and a movable rod (16) is fixedly installed on the outer wall of the arc plate (15). The movable rod (16) is inserted into the through hole (14), and an extrusion head (17) is fixedly installed on the outer end of the movable rod (16). The compression spring (18) is sleeved on the rod body of the movable rod (16), and the compression spring (18) is also fixedly installed between the outer wall of the arc plate (15) and the inner wall of the fixing ring (8), and a clamping block (19) corresponding to the clamping groove (5) is fixedly installed on the inner wall of the arc plate (15).

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