Internal gearing transmission device
By designing an internal meshing transmission device, the meshing of the splined shaft and the internal gear disc solves the problem of inconvenient operation of transmission gears in looms, achieving a simple and direct transmission route and good structural stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG TAITAN CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-26
Smart Images

Figure CN224283272U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of loom technology, and more specifically, to an internal meshing transmission device. Background Technology
[0002] There are currently two main types of devices used in looms to engage and disengage the gear drive and warp beam drive. One type mounts the drive gear onto the warp beam, which is then mounted on the loom's support frame to achieve gear engagement. However, this method requires the gear to be mounted on the warp beam, which presents numerous inconveniences in production. The other type mounts the gear onto the loom itself, using a set of engagement and disengagement mechanisms to achieve engagement and disengagement with the warp beam drive. In this structure, the gear's position is moved, relying on the internal splined gear plate disengaging from the external splined joint. Since the gears on the warp beam are generally quite heavy and have a cantilevered structure, moving and engaging the external splined joint is difficult and cumbersome to operate. Utility Model Content
[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an internal meshing transmission device.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] This utility model discloses an internal meshing transmission device, including a support, a rotating sleeve on the support, an internal gear disk rotatably disposed inside the rotating sleeve, a pressure plate connected to the end of the internal gear disk away from the rotating sleeve, a spline shaft passing through the pressure plate, the external teeth of the spline shaft meshing with the internal teeth of the internal gear disk, the end of the spline shaft away from the internal gear disk passing through the pressure plate and threadedly connected to a wrench, a spring sleeved on the spline shaft, one end of the spring abutting against the end of the pressure plate near the internal gear disk, the other end of the spring abutting against the end face of the external teeth of the spline shaft, and an internal gear joint rotatably disposed on the support.
[0006] Furthermore, a bushing is provided inside the rotating sleeve, and baffles are provided at both ends of the bushing inside the rotating sleeve, with a portion of the internal gear disk rotatably disposed inside the bushing.
[0007] Furthermore, a guide sleeve is provided inside the pressure plate, through which the spline shaft passes.
[0008] Furthermore, a bearing is installed on the support, and a portion of the internal gear joint is rotatably disposed within the bearing.
[0009] Furthermore, a pressure cap is hinged to the support, and a bearing is installed between the support and the pressure cap.
[0010] Furthermore, a handle is installed at the end of the spline shaft that protrudes from the pressure plate.
[0011] Furthermore, the handle is installed on the splined shaft via a threaded connection.
[0012] The beneficial effects of this utility model are: the gear on the shaft is fixedly connected to the internal gear plate, and the gear transmission is transmitted to the internal gear joint through the spline shaft via the internal gear plate. The transmission route is simple and direct, the structure is stable and the structure is simplified; the transmission between the internal gear plate and the internal gear joint can be disconnected and engaged by adjusting the position of the spline shaft, which is simple and convenient to operate; the internal gear plate is rotatably connected to the support, and the weight of the transmission gear will not affect the disconnection and engagement of the transmission. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of one structure of the internal meshing transmission device in this embodiment;
[0014] Figure 2 This is a schematic diagram of the working state of the internal meshing transmission device in this embodiment. Figure 1 ;
[0015] Figure 3 This is a schematic diagram of the working state of the internal meshing transmission device in this embodiment. Figure 2 .
[0016] Reference numerals in the attached drawings: 1. Support; 2. Pressure cap; 3. Internal gear joint; 4. Bearing; 5. Internal gear disc; 6. Pressure plate; 7. Splined shaft; 8. Wrench; 9. Handle; 10. Retaining ring one; 11. Bushing; 12. Baffle; 13. Guide sleeve; 14. Retaining ring two; 15. Spring; 16. Rotating sleeve. 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] like Figures 1-3As shown, an internal meshing transmission device includes a support 1, which is manufactured using a casting process. A pressure cap 2 is hinged to the support 1, and the end of the pressure cap 2 away from the hinge point can be fixed to the support 1 by bolts. A bearing 4 is fixedly installed between the support 1 and the pressure cap 2, and an internal gear joint 3 is rotatably installed inside the bearing 4. The end of the internal gear joint 3 with internal teeth is located close to the support 1. The side of the internal gear joint 3 away from the support 1 can be connected to other shaft parts, such as the warp beam of a loom, through a connecting hole. A rotating sleeve 16 is installed on the support 1, and an internal gear disk 5 is rotatably installed inside the rotating sleeve 16. The gear of the transmission shaft is fixedly connected to the internal gear disk 5 through a hole on the internal gear disk 5. A pressure plate 6 is installed on the side of the internal gear disk 5 away from the internal gear joint 3. A splined shaft 7 passes through the pressure plate 6, and the external teeth of the splined shaft 7 mesh with the internal teeth of the internal gear disk 5. A wrench 8 is threadedly connected to the end of the splined shaft 7 that extends out of the pressure plate 6. A spring 15 is fitted onto the portion of the splined shaft 7 located on the pressure plate 6. One end of the spring 15 abuts against the end of the pressure plate 6 near the internal gear plate 5, and the other end of the spring 15 abuts against the external gear end face of the splined shaft 7. Under the action of the spring 15, the splined shaft 7 tends to move towards the internal gear joint 3, causing the wrench 8 to rest against the end face of the pressure plate 6. By applying pressure with the spring 15, it is possible to prevent the splined shaft 7 from disengaging from the internal gear joint 3 due to vibration or other factors during rotation.
[0019] By rotating the wrench 8, the splined shaft 7 can be moved axially. When transmission engagement is required, rotating the wrench 8 moves the splined shaft 7 towards the internal gear joint 3. Rotating the internal gear joint 3 adjusts its position, allowing the external teeth of the splined shaft 7 to smoothly mesh with the internal teeth of the internal gear joint 3, while the external teeth of the splined shaft 7 maintain meshing with the internal teeth of the internal gear disc 5. When disengagement is required, rotating the wrench 8 in the opposite direction moves the splined shaft 7 in the opposite direction, causing the external teeth of the splined shaft 7 to disengage from the internal gear joint 3, thus breaking the engagement.
[0020] The spline shaft 7 is made of alloy steel. The dimensional accuracy of the spline shaft 7, the internal gear plate 5 and the internal gear joint 3 is controlled to ensure a reasonable meshing clearance.
[0021] The specific installation method of the internal gear disk 5 is as follows: a bushing 11 is installed inside the rotating sleeve 16. Both ends of the bushing 11 are provided with baffles 12. The baffles 12 abut against the end faces of the bushing 11 and the rotating sleeve 16. One end of the internal gear disk 5 passes through the bushing 11 and is engaged with a retaining ring 10. The inner side of the retaining ring 10 abuts against the end face of the baffle 12 near the internal gear joint 3. The other baffle 12 is abutted by the internal gear disk 5, thereby making the internal gear disk 5 and the rotating sleeve 16 rotatably connected.
[0022] A guide sleeve 13 is installed inside the pressure plate 6, through which the spline shaft 7 passes. The axial movement of the spline shaft 7 is guided by the guide sleeve 13. The guide sleeve 13 is made of wear-resistant material similar to a bushing and is equipped with lubrication, so that the spline shaft 7 can rotate or move axially more smoothly within the guide sleeve 13.
[0023] A handle 9 is installed at one end of the splined shaft 7 that protrudes from the pressure plate 6. The handle 9 is threaded onto the splined shaft 7. When needed, the splined shaft 7 can be pulled outward by the handle 9 to disengage the internal gear mesh more quickly.
[0024] A retaining ring 14 is fitted on one end of the spline shaft 7 outside the pressure plate 6. The retaining ring 14 is located outside the wrench 8. The wrench 8 can be limited to prevent it from being unscrewed from the spline shaft 7.
[0025] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. An internal gearing device, characterized in that, The device includes a support (1), on which a rotating sleeve (16) is provided. An internal gear disk (5) is rotatably disposed inside the rotating sleeve (16). A pressure plate (6) is connected to one end of the internal gear disk (5) away from the rotating sleeve (16). A spline shaft (7) is inserted inside the pressure plate (6). The external teeth of the spline shaft (7) mesh with the internal teeth of the internal gear disk (5). One end of the spline shaft (7) away from the internal gear disk (5) passes through the pressure plate (6) and is threadedly connected to a wrench (8). A spring (15) is sleeved on the spline shaft (7). One end of the spring (15) abuts against the end of the pressure plate (6) near the internal gear disk (5), and the other end of the spring (15) abuts against the end face of the external teeth of the spline shaft (7). An internal gear connector (3) is rotatably disposed on the support (1).
2. The internal meshing transmission device according to claim 1, characterized in that, A bushing (11) is provided inside the rotating sleeve (16), and baffles (12) are provided at both ends of the bushing (11) inside the rotating sleeve (16). A part of the internal gear disk (5) is rotatably disposed inside the bushing (11).
3. The internal meshing transmission device according to claim 1, characterized in that, The pressure plate (6) is provided with a guide sleeve (13), and the spline shaft (7) passes through the guide sleeve (13).
4. The internal meshing transmission device according to claim 1, characterized in that, A bearing (4) is installed on the support (1), and a part of the internal toothed joint (3) is rotatably disposed in the bearing (4).
5. The internal meshing transmission device according to claim 4, characterized in that, A pressure cap (2) is hinged to the support (1), and the bearing (4) is installed between the support (1) and the pressure cap (2).
6. The internal meshing transmission device according to claim 1, characterized in that, A handle (9) is installed at one end of the splined shaft (7) that protrudes from the pressure plate (6).
7. The internal meshing transmission device according to claim 6, characterized in that, The handle (9) is installed on the splined shaft (7) by means of a threaded connection.