A type of cylindrical gear for agricultural machinery

Abstract

This utility model discloses a spur gear for agricultural machinery, including an inner mounting sleeve. Four connecting strips are equidistantly mounted around the outer side of the inner mounting sleeve. Gear segments are inserted into the connecting strips, and gear teeth are fixedly connected to the outer surface of the gear segments. A cavity is formed inside the inner mounting sleeve corresponding to the positions of the connecting strips. Two locking rods are slidably connected within the cavities along the direction of the connecting strips. One end of each locking rod passes through the connecting strip and extends into a hole on the inner side of the gear segment. This spur gear for agricultural machinery has a reasonable structural design and is easy to use. It adopts a multi-segment gear design, allowing for replacement of only that segment when the outer gear is damaged, eliminating the need to discard the entire gear and reducing operating costs. Furthermore, the use of a snap-fit ​​mechanism to fix each gear segment ensures installation stability while enabling quick disassembly and installation, making it highly practical.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery gear technology, specifically a cylindrical gear for agricultural machinery. Background Technology

[0002] Agricultural machinery is a general term for various machines used in agricultural production. These include: large and small tractors, land leveling machinery, plows, tillers, rice transplanters, seeders, threshers, water pumps, combine harvesters, rolling shutters, and thermal insulation blankets, among other equipment. Gears are mechanical components with teeth on their rims that can continuously mesh to transmit motion and power. Gears are meshing toothed mechanical parts, and their application in transmission has a long history.

[0003] A search revealed a patent document CN201710241520.5 that discloses "a type of cylindrical gear for agricultural machinery," which includes an internal gear. The internal gear has a shaft hole at its center for convenient transmission, and a strip-shaped positioning groove on the inner side wall of the shaft hole. Several sets of internal teeth are evenly spaced on the outer side of the internal gear. The internal gear has a simple structure, is easy to operate, and is easy to disassemble and install. It does not require repositioning of the gear, saves materials, and improves maintenance efficiency.

[0004] While the patent allows for quick disassembly and assembly of the outer gear for easy replacement and to save on material costs, not every tooth of the disassembled outer gear will be damaged, and replacing the entire gear will still increase the cost of use. Therefore, we propose a cylindrical gear for agricultural machinery to solve the problems mentioned in the background technology. Utility Model Content

[0005] The purpose of this invention is to provide a cylindrical gear for agricultural machinery to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cylindrical gear for agricultural machinery, comprising an inner mounting sleeve, four connecting strips are equidistantly mounted around the outer side of the inner mounting sleeve, a gear segment is inserted into the connecting strips, and gear teeth are fixedly connected to the outer surface of the gear segment. A cavity is provided inside the inner mounting sleeve corresponding to the position of the connecting strips, and two locking rods are slidably connected in the cavity along the direction of the connecting strips. One end of the locking rod passes through the connecting strip and extends into the insertion hole on the inner side of the gear segment.

[0007] Furthermore, a movable sleeve is fixedly connected to the inner wall of the cavity by a thrust spring, one end of the locking rod is fixedly connected to the movable sleeve, a pressing handle is fixedly connected to the front side of the movable sleeve, and a through groove communicating with the cavity is opened on the front side of the inner mounting sleeve corresponding to the position of the pressing handle, and the pressing handle extends through to the outside of the through groove.

[0008] Furthermore, a threaded sleeve is welded to the front side of the inner mounting sleeve corresponding to the side of the pressing handle, and a locking screw is connected to the threaded sleeve. One end of the locking screw passes through the insertion hole on the side of the pressing handle.

[0009] Furthermore, guide sliders are symmetrically installed on both sides of the movable sleeve, and the guide sliders are slidably connected to the grooves on the sidewall of the cavity.

[0010] Furthermore, the cross-sectional shape of the connecting strip is specifically T-shaped.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention divides the outer gear into multiple gear segments. During installation, the corresponding pressing handle is pressed inwards, causing the thrust spring to contract. The moving sleeve then retracts the locking rod to the inside of the connecting strip, locking the gear segment into the connecting strip. The pressing handle is then released, and the locking rod secures the gear segment. With the threaded sleeve in place, the locking screw is rotated to lock its end into the insertion hole on the side of the pressing handle, thus fixing the pressing handle. This further secures the moving sleeve and locking rod, preventing the locking rod from loosening due to vibration during agricultural machinery operation. This agricultural machinery uses a cylindrical gear with a reasonable structural design and convenient use. The multi-segment gear design allows for replacement of only that segment when the outer gear is damaged, eliminating the need to discard the entire gear and reducing operating costs. Furthermore, the snap-fit ​​method secures each gear segment, ensuring installation stability while enabling quick disassembly and installation, making it highly practical. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0015] Figure 3 This is a partial three-dimensional structural diagram of the inner mounting strip and connecting insert of this utility model.

[0016] In the diagram: 1 Inner mounting sleeve, 2 Connecting insert, 3 Gear segment, 4 Gear tooth, 5 Cavity, 6 Locking rod, 7 Thrust spring, 8 Moving sleeve, 9 Press handle, 10 Through groove, 11 Threaded sleeve, 12 Locking screw, 13 Guide slider. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-3 A type of spur gear for agricultural machinery includes an inner mounting sleeve 1. Four connecting strips 2 are equidistantly mounted around the outer side of the inner mounting sleeve 1. The cross-sectional shape of the connecting strips 2 is T-shaped. A gear segment 3 is inserted into the connecting strip 2. Gear teeth 4 are fixedly connected to the outer surface of the gear segment 3. A cavity 5 is opened inside the inner mounting sleeve 1 corresponding to the position of the connecting strip 2. Two locking rods 6 are slidably connected in the cavity 5 along the direction of the connecting strip 2. One end of the locking rod 6 passes through the connecting strip 2 and extends into the insertion hole on the inner side of the gear segment 3.

[0019] A movable sleeve 8 is fixedly connected to the inner wall of the cavity 5 by a thrust spring 7. One end of the locking rod 6 is fixedly connected to the movable sleeve 8. A pressing handle 9 is fixedly connected to the front side of the movable sleeve 8. A through groove 10 communicating with the cavity 5 is opened on the front side of the inner mounting sleeve 1 corresponding to the position of the pressing handle 9. The pressing handle 9 extends through to the outside of the through groove 10.

[0020] A threaded sleeve 11 is welded to the side of the inner mounting sleeve 1 corresponding to the side of the pressing handle 9. A locking screw 12 is connected to the threaded sleeve 11. One end of the locking screw 12 passes through the insertion hole on the side of the pressing handle 9. With the connection of the threaded sleeve 11, the locking screw 12 can be rotated to lock its end into the insertion hole on the side of the pressing handle 9, thereby fixing the pressing handle 9 and further fixing the movable sleeve 8 and the locking rod 6, preventing the locking rod 6 from loosening due to vibration during the operation of the agricultural machinery.

[0021] Guide sliders 13 are symmetrically installed on both sides of the movable sleeve 8. The guide sliders 13 are slidably connected to the grooves on the side wall of the cavity 5. By setting the guide sliders 13, the stability of the movable sleeve 8 during movement can be guaranteed, and there will be no lateral displacement, which will affect the insertion of the locking rod 6 into the gear section 3.

[0022] This agricultural machinery spur gear has a reasonable structural design and is easy to use. It adopts a multi-segment gear, so when a certain part of the external gear is damaged, only that segment needs to be replaced, without discarding the whole gear, which reduces the cost of use. In addition, each gear segment is fixed by snap-fit, which ensures installation stability and allows for quick disassembly and installation, making it highly practical.

[0023] In use, the outer gear is divided into multiple gear segments 3. When installing the gear segments 3, the corresponding pressing handle 9 is pressed inward, causing the thrust spring 7 to contract. The moving sleeve 8 drives the locking rod 6 to contract to the inside of the connecting strip 2. At this time, the gear segment 3 is locked into the connecting strip 2, and the pressing handle 9 is released. The locking rod 6 is used to lock and fix the gear segment 3. With the connection of the screw sleeve 11, the locking screw 12 is rotated to lock its end into the insertion hole on the side of the pressing handle 9, thus fixing the pressing handle 9. This further fixes the moving sleeve 8 and the locking rod 6, preventing the locking rod 6 from loosening due to vibration during the operation of the agricultural machinery.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A columnar gear for agricultural machines comprising an inner mounting sleeve (1), characterized in that: Four connecting strips (2) are equidistantly mounted around the outer side of the inner mounting sleeve (1). A gear segment (3) is inserted into the connecting strip (2). Gear teeth (4) are fixedly connected to the outer surface of the gear segment (3). A cavity (5) is opened inside the inner mounting sleeve (1) corresponding to the position of the connecting strip (2). Two locking rods (6) are slidably connected in the cavity (5) along the direction of the connecting strip (2). One end of the locking rod (6) passes through the connecting strip (2) and extends into the insertion hole on the inner side of the gear segment (3).

2. The agricultural tine wheel of claim 1, wherein: A movable sleeve (8) is fixedly connected to the inner wall of the cavity (5) by a thrust spring (7). One end of the locking rod (6) is fixedly connected to the movable sleeve (8). A pressing handle (9) is fixedly connected to the front side of the movable sleeve (8). A through groove (10) communicating with the cavity (5) is opened on the front side of the inner mounting sleeve (1) corresponding to the position of the pressing handle (9). The pressing handle (9) extends through to the outside of the through groove (10).

3. The tine wheel for agricultural machines according to claim 2, characterized in that: The inner mounting sleeve (1) has a threaded sleeve (11) welded to the side of the pressing handle (9) on the front side. The threaded sleeve (11) is internally threaded with a locking screw (12), and one end of the locking screw (12) passes through the insertion hole on the side of the pressing handle (9).

4. The agricultural machinery spur gear according to claim 3, characterized in that: Guide sliders (13) are symmetrically installed on both sides of the movable sleeve (8), and the guide sliders (13) are slidably connected to the grooves on the side wall of the cavity (5).

5. The tine wheel of claim 4, wherein: The cross-sectional shape of the connecting insert (2) is specifically T-shaped.

Images