Adjustable centering and pressing device for locking nut structure at shaft end of chain wheel assembly

Abstract

The utility model relates to the technical field of mining chain wheel assembly assembling processes, in particular to an adjustable centering pressing device for a chain wheel assembly shaft end locking nut structure, which meets the use requirements of most chain wheel assemblies by adjusting three pairs of L-shaped supporting frames, and is used for firstly assembling a chain wheel assembly shaft end floating seal seat in place and then assembling the chain wheel assembly shaft end floating seal seat in place. And then the round nut is easily screwed and locked. The device is high in universality, compact in structure and convenient to operate, and meanwhile, the working efficiency is also improved.

Description

Technical Field

[0001] The utility model relates to an assembly device for the assembly process of a sprocket assembly, specifically an adjustable centering and pressing device for the shaft end locking nut structure of a sprocket assembly. Background Art

[0002] In the structure of a mining sprocket assembly, the outside of the shaft end floating seal seat (a part for installing a floating oil seal) is locked by a round nut. During the actual assembly process, the floating seal seat with half of the floating seal rings installed (a floating oil seal consists of a set of two half floating seal rings) needs to be sleeved on the shaft and aligned with the other half of the floating seal rings in the through cover. However, during the alignment process, due to the large elastic resistance generated by the O-ring rubber in the floating seal rings, it is difficult to install them in place directly by the tightening force of the round nut. Summary of the Invention

[0003] The purpose of the utility model is to provide an adjustable centering and pressing device specifically for the shaft end locking nut structure of a sprocket assembly to solve the problems in the prior art. By using this device, the support frame can be adjusted to meet the use of different sprocket assemblies, and then a full-thread bolt is tightened in the central part of the device to apply force. The floating seal seat is driven by the pressing device to be assembled in place, realizing the alignment of the two half floating seal rings, and then the round nut is tightened separately.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0005] First, the adjustable centering and pressing device for the shaft end locking nut structure of a sprocket assembly consists of three parts, namely a circular pressure plate, an L-shaped support frame, and connecting screws. There is 1 circular pressure plate, 3 pairs of L-shaped support frames, and 3 connecting screws. The 3 pairs of identical L-shaped support frames are connected in the three long-hole track grooves of the circular pressure plate through 3 connecting screws.

[0006] The beneficial effect of the utility model is that by using this device, the shaft end floating seal seat of the sprocket assembly can be assembled in place first, and then the round nut can be easily tightened and locked. It has strong versatility, a compact structure, convenient operation, and also improves work efficiency. Brief Description of the Drawings

[0007] The following further illustrates the utility model with reference to the drawings and examples.

[0008] Figure 1 is the front view of the overall structure of the utility model;

[0009] Figure 2 is the bottom view of the overall structure of the utility model;

[0010] Figure 3 is the schematic diagram of the usage method of the utility model.

[0011] In the figure: 1. Connecting screw, 2. Circular pressure plate, 3. L-shaped support frame, 4. Floating seal seat, 5. Through cover, 6. Floating seal ring, 7. Round nut, 8. Sprocket shaft, 9. Screws for fastening. Specific embodiments

[0012] The technical solutions in the embodiments of the present invention will be described completely and clearly below with reference to the accompanying drawings and schematic diagrams in the embodiments of the present invention.

[0013] It can be seen from Figure 1 and Figure 2 that the composition of the main body of the present invention is as follows: Three pairs of identical L-shaped support frames are connected in the three long-hole track grooves of the circular pressure plate through three connecting screws.

[0014] During use, first put the floating seal seat on the shaft (not tightened, in a free state), and then put the round nut (in an untightened state) on the shaft. Then, according to the spline end shaft diameter of the sprocket assembly and the installation space between the floating seal seat and the through cover, move the three pairs of L-shaped support frames in the long-hole track grooves of the circular pressure plate so that the lower ends of the three pairs of support frames can completely abut against the outer end face of the floating seal seat, and fasten and lock them with connecting screws. Put the adjusted device on the spline shaft head of the sprocket assembly. Generally, the spline shaft head is designed with 2-6 threaded holes. Through 2-6 screws of corresponding specifications, tighten and press the device. The three pairs of support frames press down, thereby driving the floating seal seat to move downward until the two half floating seal rings are successfully aligned. Finally, tighten the round nut through the sufficient gap between the three pairs of support frames to achieve the purpose of locking the shaft end.

[0015] It should be understood that the above are only the preferred embodiments of the present invention, and all the usual changes and substitutions made by those skilled in the art within the scope of the technical solutions of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable centering pressing device for the shaft end locking nut structure of a sprocket assembly, characterized in that: It consists of three parts: a circular pressure plate (1), an L-shaped support frame (2), and a connecting screw (3); three identical L-shaped support frames (2) are connected in the three long-hole track grooves of the circular pressure plate (1) through three connecting screws (3), and the three pairs of T-shaped support frames can move radially along the circular pressure plate (1) in the track grooves to adjust their positions; there is a lifting threaded hole at the center of the circular pressure plate; according to different sprocket assemblies, holes of different specifications are also opened on both sides to apply force to press the entire device.

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