Sealing structure for worm and worm gear case of warp knitting machine

Abstract

The utility model discloses a sealing structure of a worm and a worm gear case of a warp knitting machine, the worm is rotatably arranged in a box body through a bearing, the box body is provided with an opening in the axial direction of the worm, the worm is provided with a worm output end, and the worm output end extends out of the box body from the opening; an oil seal support is installed between the output end of the worm and the opening, an oil seal is installed on the oil seal support, the oil seal is sleeved on the worm, a shaft sleeve is fixed on the worm located on the outer side of the opening through a jackscrew sleeve, the shaft sleeve is in clearance fit with the worm, a sealing ring is sleeved between the shaft sleeve and the worm, and the sealing ring is in interference fit with the worm. The shaft sleeve is provided with an extension section extending towards the inner side of the opening, and the oil seal sleeves the extension section and is in clearance fit with the extension section. When the worm rotates, the shaft sleeve is driven to rotate together, the oil seal only abrades the shaft sleeve, only the shaft sleeve needs to be replaced after the shaft sleeve is abraded, maintenance difficulty and maintenance cost are greatly reduced, cost is reduced, and maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a warp knitting machine, in particular to a sealing structure of a worm and a worm gear box of the warp knitting machine. Background Art

[0002] The utility model patent of China Patent No. 201020169305.2 discloses a worm gear box for warp knitting machine comb transverse movement, including a box body with a rib plate in the inner cavity, a worm wheel rotatably installed in the box body and located above the rib plate, and a worm gear meshing with the worm wheel, the worm gear is supported by at least two bearings arranged on the rib plate at a certain distance from each other and one end of the worm gear extends out of the box body, and the other end of the worm gear is immersed in the oil cavity arranged on the rib plate, and an end cover and a sealing ring are arranged between the extended end of the worm gear and the box body. The sealing ring structure is difficult to prevent oil leakage from the end face. If it is directly changed to an oil seal, the oil seal and the worm gear will be in interference fit for a long time, which will cause the worm gear to wear, and increase the maintenance cost of the equipment. Utility Model Content

[0003] The utility model aims to provide a sealing structure for a worm and a worm gear box of a warp knitting machine.

[0004] The technical solution to achieve the purpose of the utility model is: a sealing structure of a worm and a worm gear box of a warp knitting machine, the worm being rotatably mounted in a box body through a bearing, the box body being provided with an opening in the axial direction of the worm, the worm having a worm output end, the worm output end extending out of the box body from the opening; an oil seal bracket being installed between the worm output end and the opening, an oil seal being installed on the oil seal bracket, the oil seal sleeve being arranged on the worm, a shaft sleeve being fixed to the worm located outside the opening through a top screw sleeve, the shaft sleeve being gap-fitted with the worm, a sealing ring being mounted between the shaft sleeve and the worm, the sealing ring being interference-fitted with the worm; the shaft sleeve having an extension section extending toward the inner side of the opening, the oil seal sleeve being arranged on the extension section and gap-fitted with the extension section.

[0005] Furthermore, a bearing seat is installed at the opening, the bearing is installed in the box through the bearing seat, and the oil seal bracket is fixed on the bearing seat.

[0006] The sealing structure of the worm and worm gear box of the warp knitting machine realized by the utility model realizes effective sealing between the worm and the box body, and at the same time, the shaft sleeve, the sealing ring and the worm are integrated and rotate together, so that the oil seal will only wear the shaft sleeve during rotation, and only the shaft sleeve needs to be replaced after the shaft sleeve is worn, which greatly reduces the difficulty and cost of maintenance, reduces costs and improves maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1It is a schematic cross-sectional view of the sealing structure of the worm and worm gear box of the warp knitting machine according to the utility model. DETAILED DESCRIPTION

[0008] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0009] like Figure 1 A sealing structure of a worm and a worm gear box of a warp knitting machine, wherein the worm 10 is rotatably mounted in a box body 30 through a bearing 20, and the box body 30 is provided with an opening 301 in the axial direction of the worm 10, and the worm 10 has a worm output end 101, and the worm output end 101 extends out of the box body 30 from the opening 301; a bearing seat 201 is installed at the opening 201, and the bearing 20 is installed in the box body 10 through the bearing seat 201, and an oil seal bracket 1 is fixed on the bearing seat 201, An oil seal 2 is installed on the oil seal bracket 1, and the oil seal 2 is sleeved on the worm 10. A sleeve 3 is sleeved and fixed on the worm 10 located outside the opening 301 through a top screw 4. The sleeve 3 is clearance-fitted with the worm 10. A sealing ring 5 is sleeved between the sleeve 3 and the worm 10, and the sealing ring 5 is interference-fitted with the worm 10. The sleeve 3 has an extension section 31 extending toward the inside of the opening 301, and the oil seal 2 is sleeved on the extension section 31 and clearance-fitted with the extension section 31.

[0010] When the worm rotates, it drives the shaft sleeve to rotate together, so the oil seal will only wear the shaft sleeve. After the shaft sleeve is worn, only the shaft sleeve needs to be replaced, which greatly reduces the maintenance difficulty and maintenance cost, reduces the cost, and improves the maintenance efficiency.

[0011] The installation position of the bearing of the utility model is not limited to that shown in the embodiment. The axial force of the worm gear inside the opening is more balanced when the bearing is installed therein.

[0012] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A sealing structure of a worm and a worm gear box of a warp knitting machine, wherein the worm is rotatably mounted in a box body through a bearing, the box body is provided with an opening in the axial direction of the worm, the worm has a worm output end, and the worm output end extends out of the box body from the opening, characterized in that: An oil seal bracket is installed between the output end of the worm and the opening, an oil seal is installed on the oil seal bracket, the oil seal sleeve is arranged on the worm, a sleeve is fixed to the worm located outside the opening through a top screw sleeve, the sleeve is clearance-matched with the worm, a sealing ring is sleeved between the sleeve and the worm, and the sealing ring is interference-fitted with the worm; the sleeve has an extension section extending toward the inside of the opening, the oil seal sleeve is arranged on the extension section and clearance-matched with the extension section.

2. The sealing structure of the worm and worm gear box of a warp knitting machine according to claim 1, characterized in that: A bearing seat is installed on the inner side of the opening, the bearing is installed in the box through the bearing seat, and the oil seal bracket is fixed on the bearing seat.

Images