Spiral bevel gear pair for a rapier loom

Abstract

The utility model relates to a spiral bevel gear pair for rapier loom belongs to the technical field of gear transmission box, including box, the box inside is equipped with vertical shaft spiral bevel gear, the vertical shaft spiral bevel gear on be equipped with the input shaft of extending the upper end of box, the vertical shaft spiral bevel gear lower extreme is equipped with with vertical shaft spiral bevel gear gear shape meshing transmission's horizontal shaft spiral bevel gear, the horizontal shaft spiral bevel gear on be equipped with intermediate transmission gear shaft, the both ends of intermediate transmission gear shaft all are equipped with with box is inserted and is bolted to connect fixed bearing cap, the bearing of input shaft and box between, the bearing of intermediate transmission gear shaft and bearing cap between all are equipped with. Have the characteristics such as compact structure, good rigidity, strong sealing and convenient dismounting maintenance. Solveed the problem such as connection loose, low precision, easy to wear and poor sealing existing in traditional gear transmission structure.

Description

Technical Field

[0001] This utility model relates to the field of gear transmission box technology, specifically to a spiral bevel gear pair for a rapier loom. Background Technology

[0002] Rapier looms are currently the most widely used type of shuttleless loom. Their weft insertion mechanism (the process of passing the weft yarn through the warp yarn) demands extremely high precision, stability, and response speed in transmission. The spiral bevel gear pair, as a core component of the weft insertion mechanism or main drive system, is responsible for transmitting power from the motor (usually horizontally placed) to the loom's actuator (typically involving vertical or cross-axis movement). Therefore, its performance directly determines the loom's weaving efficiency and quality.

[0003] In traditional technology, the gearbox of a rapier loom typically uses standard straight bevel gears or ordinary spiral bevel gears. The connection method between the gears and the shaft is usually as follows: Keyed connection: Torque is transmitted via a flat key or spline.

[0004] Separate machining: Gears, fixed discs, and shafts are usually machined separately and then assembled together.

[0005] Insufficient connection stability (vibration and loosening).

[0006] Problem: Looms operating at high speeds (especially modern high-speed rapier looms) generate significant impact loads and vibrations. Traditional keyed connections or separate bolted connections are prone to problems such as increased clearance, keyway wear, or loosening of connecting bolts under long-term alternating stress.

[0007] Impact: This can lead to a decrease in gear meshing accuracy, noise, and even serious malfunctions such as tooth breakage and shaft breakage, affecting the stability of the loom's operation.

[0008] Poor coaxiality of the assembly (low transmission efficiency).

[0009] Problem: In the existing technology, gears, fixed disks and shafts are independent parts, and the cumulative tolerance after stacking is large, which makes it difficult to control the radial runout and end face runout of the gears.

[0010] Impact: This will reduce the meshing accuracy of spiral bevel gears, increase transmission noise, accelerate the wear of gears and bearings, and reduce transmission efficiency. Summary of the Invention

[0011] This invention addresses the shortcomings of existing technologies by providing a spiral bevel gear pair for rapier looms, characterized by its compact structure, high rigidity, strong sealing, and convenient disassembly and maintenance. It solves problems such as loose connections, low precision, easy wear, and poor sealing inherent in traditional gear transmission structures.

[0012] The above-mentioned technical problems of this utility model are mainly solved by the following technical solutions: A spiral bevel gear pair for a rapier loom includes a housing. A vertical spiral bevel gear is housed within the housing. An input shaft extends from the upper end of the housing onto the vertical spiral bevel gear. A horizontal spiral bevel gear meshes with the vertical spiral bevel gear at its lower end. An intermediate transmission gear shaft is mounted on the horizontal spiral bevel gear. Bearing covers, which are bolted to the housing, are located at both ends of the intermediate transmission gear shaft. Bearings are provided between the intermediate transmission gear shaft and the bearing covers, and between the input shaft and the housing.

[0013] Preferably, the intermediate transmission gear shaft is provided with a gear fixing disk II that is pin-connected and fixed to the horizontal axis spiral bevel gear. The diameter of the gear on the intermediate transmission gear shaft is smaller than the assembly inner hole of the horizontal axis spiral bevel gear, and the gear fixing disk II and the intermediate transmission gear shaft are integrally formed.

[0014] Preferably, the input shaft is provided with a gear fixing disk I that is bolted to and fixed to the vertical shaft spiral bevel gear, and the input shaft and the gear fixing disk I are an integrated structure.

[0015] Preferably, the rear end of the bearing is provided with a dustproof sealing ring that fits between the housing and the input shaft.

[0016] This invention can achieve the following effects: This invention provides a spiral bevel gear pair for rapier looms, which, compared with existing technologies, features a compact structure, high rigidity, strong sealing, and convenient disassembly and maintenance. It solves the problems of loose connections, low precision, easy wear, and poor sealing found in traditional gear transmission structures.

[0017] Compact structure and high rigidity: Through the design of "integrated input shaft and gear fixing plate I" and "integrated intermediate shaft and gear fixing plate II", the number of parts is reduced, cumulative errors are eliminated, and coaxiality and torsional rigidity are improved.

[0018] Strong sealing performance: By optimizing the installation position of the dustproof sealing ring, it effectively prevents fly shavings and dust from entering the bearing, adapting to the harsh working conditions of the loom.

[0019] Easy to disassemble and maintain: The bearing cover uses a plug-in bolt connection, which facilitates quick inspection and maintenance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] In the diagram: 1. Housing; 2. Input shaft; 3. Dustproof sealing ring; 4. Gear fixing plate I; 5. Vertical shaft spiral bevel gear; 6. Horizontal shaft spiral bevel gear; 7. Bearing cover; 8. Bearing; 9. Gear fixing plate II; 10. Intermediate transmission gear shaft. Detailed Implementation

[0022] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0023] Example: Figure 1 As shown, a spiral bevel gear pair for a rapier loom includes a housing 1. A vertical spiral bevel gear 5 is housed within the housing 1. An input shaft 2 extends from the upper end of the housing 1 onto the vertical spiral bevel gear 5. A gear fixing disc I4, bolted to and fixed to the vertical spiral bevel gear 5, is mounted on the input shaft 2. The input shaft 2 and gear fixing disc I4 are integrally formed. A horizontal spiral bevel gear 6, meshing with the vertical spiral bevel gear 5, is located at the lower end of the vertical spiral bevel gear 5. An intermediate transmission gear shaft 10 is mounted on the horizontal spiral bevel gear 6. A gear fixing disc II9, pin-connected to and fixed to the horizontal spiral bevel gear 6, is mounted on the intermediate transmission gear shaft 10. The diameter of the gear on the intermediate transmission gear shaft 10 is smaller than the inner mounting hole of the horizontal spiral bevel gear 6. The gear fixing disc II9 and the intermediate transmission gear shaft 10 are integrally formed. Both ends of the intermediate transmission gear shaft 10 are provided with bearing covers 7 that are bolted to the housing 1. Bearings 8 are provided between the intermediate transmission gear shaft 10 and the bearing covers 7, and between the input shaft 2 and the housing 1. The rear end of the bearing 8 is provided with a dustproof sealing ring 3 that fits between the housing 1 and the input shaft 2.

[0024] In summary, the spiral bevel gear pair used in this rapier loom features a compact structure, high rigidity, strong sealing, and convenient disassembly and maintenance. It solves the problems of loose connections, low precision, easy wear, and poor sealing inherent in traditional gear transmission structures.

[0025] Integrated fixed plate: Both the input shaft and the intermediate shaft adopt an integrated design of "shaft + fixed plate", which reduces the number of connecting parts and improves the stability and accuracy of transmission.

[0026] Dual-mode connection and fixing: the vertical shaft gear is fixed with bolts, and the horizontal shaft gear is fixed with pins. Appropriate connection processes were selected for different shaft system characteristics.

[0027] Sealing and protection: A special dustproof sealing ring is designed to adapt to the dusty environment that the loom may be in, protecting the bearings and extending their service life.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] In summary, the above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A spiral bevel gear pair for a rapier loom, characterized in that: The device includes a housing (1), which contains a vertical shaft spiral bevel gear (5). The vertical shaft spiral bevel gear (5) has an input shaft (2) extending out of the upper end of the housing (1). The lower end of the vertical shaft spiral bevel gear (5) has a horizontal shaft spiral bevel gear (6) that meshes with the vertical shaft spiral bevel gear (5). The horizontal shaft spiral bevel gear (6) has an intermediate transmission gear shaft (10). Both ends of the intermediate transmission gear shaft (10) are provided with bearing covers (7) that are bolted to the housing (1) for insertion. Bearings (8) are provided between the intermediate transmission gear shaft (10) and the bearing cover (7), and between the input shaft (2) and the housing (1).

2. The spiral bevel gear pair for a rapier loom according to claim 1, characterized in that: The intermediate transmission gear shaft (10) is provided with a gear fixing disk II (9) that is pin-connected and fixed to the horizontal shaft spiral bevel gear (6). The diameter of the gear on the intermediate transmission gear shaft (10) is smaller than the assembly inner hole of the horizontal shaft spiral bevel gear (6). The gear fixing disk II (9) and the intermediate transmission gear shaft (10) are integrated.

3. The spiral bevel gear pair for a rapier loom according to claim 1, characterized in that: The input shaft (2) is provided with a gear fixing disk I (4) that is bolted to the vertical shaft spiral bevel gear (5), and the input shaft (2) and the gear fixing disk I (4) are integrated.

4. The spiral bevel gear pair for a rapier loom according to claim 1, characterized in that: The bearing (8) is provided with a dustproof sealing ring (3) at the rear end, which is sleeved between the housing (1) and the input shaft (2).

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