Round nut anti-loose locking structure of winch speed reducer

Abstract

The utility model relates to a winding speed reducer round nut anti-loose locking structure which comprises a supporting shaft, an output bearing seat, a supporting bearing and a round nut, the supporting bearing is arranged between the supporting shaft and the output bearing seat, the supporting bearing located on the inner side is axially limited through the round nut, the round nut is arranged on the supporting shaft in a sleeved mode, and the output bearing seat is arranged on the output bearing seat. The clamping pieces are clamped between the round nut and the supporting shaft, a plurality of outer clamping grooves are evenly distributed in the end face, away from the supporting bearing side, of the round nut in the circumferential direction, the clamping pieces are embedded in the outer clamping grooves and fixed through sunk screws, the supporting shaft is provided with inner clamping grooves corresponding to the clamping pieces, and the clamping pieces extend towards the inner clamping grooves in the radial direction. According to the utility model, the clamping sheet is clamped between the round nut and the supporting shaft, so that the round nut is locked and prevented from loosening.

Description

Technical Field

[0001] The utility model relates to the technical field of winch reducers, and in particular to a round nut anti-loosening locking structure for winch reducers. Background Art

[0002] The winch reducer is used to transmit large torque, such as Figure 4 As shown, in the prior art, the support bearing 3 arranged between the support shaft 1 and the output bearing seat 2 is locked and fixed by a round nut 4, the round nut 4 is sleeved on the support shaft, and the locking pin 8 is axially inserted between the round nut 4 and the support shaft 1. The locking pin 8 destroys the thread on the support shaft 1 to achieve an anti-loosening effect.

[0003] This structure has the following defects:

[0004] 1. When the supporting bearing is subjected to large output torque, the round nut may become loose due to high temperature, vibration or other environmental factors;

[0005] 2. After disassembly, the support shaft and locking nut are easy to be scrapped;

[0006] 3. Increase the difficulty of maintenance and disassembly. Utility Model Content

[0007] The utility model aims to overcome the above-mentioned shortcomings and provides a round nut anti-loosening locking structure for a winch reducer. A card is provided between the round nut and the supporting shaft to lock the round nut and prevent it from loosening.

[0008] The purpose of the utility model is achieved in this way:

[0009] A round nut anti-loosening locking structure for a winch reducer comprises a support shaft, an output bearing seat, a support bearing and a round nut. A support bearing is arranged between the support shaft and the output bearing seat. The support bearing located on the inner side is axially limited by the round nut. The round nut is sleeved on the support shaft. A card is arranged between the round nut and the support shaft. A plurality of external card grooves are evenly distributed circumferentially on the end surface of the round nut away from the support bearing. The card is embedded in the external card groove and fixed by a countersunk screw. An internal card groove is arranged on the support shaft corresponding to the card. The card extends radially toward the internal card groove.

[0010] Preferably, the plurality of inner grooves are evenly distributed on 1 / 4 of the circumference of the support shaft.

[0011] Preferably, there are 8 outer card slots, and 6-8 continuous inner card slots are provided in the inner 1 / 4 circumference of the support shaft.

[0012] Preferably, the central angle between two adjacent inner slots is 10°.

[0013] Preferably, a threaded hole is provided at the bottom of the external card slot corresponding to the countersunk screw, and a countersunk hole is provided at the card corresponding to the countersunk screw.

[0014] The beneficial effects of the utility model are:

[0015] A card is provided between the round nut and the supporting shaft to lock the round nut and prevent it from loosening. The round nut will not loosen at high torque, thus ensuring the normal operation of the reducer. It is easy to disassemble and assemble, the supporting shaft and the round nut will not be scrapped, and the anti-loosening positioning and locking are increased. It is more convenient to maintain and the cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a round nut anti-loosening locking structure of a winch reducer according to the utility model.

[0017] Figure 2 for Figure 1 A partial enlarged view of .

[0018] Figure 3 It is a side view of the card installation structure.

[0019] Figure 4 It is a schematic diagram of the anti-loosening structure of a round nut in the prior art.

[0020] Among them: support shaft 1; inner groove 1.1; output bearing seat 2; support bearing 3; round nut 4; outer groove 4.1; card 5; countersunk screw 6; transmission shaft 7; locking pin 8. DETAILED DESCRIPTION

[0021] See also Figure 1-3 The utility model relates to a round nut anti-loosening locking structure for a winch reducer, comprising a support shaft 1, an output bearing seat 2, a support bearing 3, a round nut 4, a card 5 and a countersunk screw 6. A support bearing 3 is provided between the support shaft 1 and the output bearing seat 2. The support bearing 3 located on the inner side is limited by a round nut 4. The round nut 4 is sleeved on the support shaft 1. The card 5 is clamped between the round nut 4 and the support shaft 1. The end surface of the round nut 4 away from the support bearing side is circumferentially uniformly provided with a plurality of outer card grooves 4.1. The outer card groove 4.1 is used for embedding the card 5. The card 5 is fixed in the outer card groove 4.1 by a countersunk screw 6. The support shaft 1 is provided with an inner card groove 1.1 corresponding to the card 5. The plurality of inner card grooves 1.1 are uniformly distributed on 1 / 4 of the circumference of the support shaft 1. The card 5 extends radially toward the inner card groove 1.1.

[0022] There are 8 outer card slots 4.1, and 6-8 continuous inner card slots 1.1 are arranged inwardly of 1 / 4 circumference of the support shaft 1, and a central angle of 10° is formed between two adjacent inner card slots 1.1, so as to facilitate the alignment of the outer card slot 4.1 with the inner card slot 1.1 and improve the installation accuracy of the card.

[0023] The bottom of the outer card slot 4.1 is provided with a threaded hole corresponding to the countersunk screw 6, and the card 5 is provided with a countersunk hole corresponding to the countersunk screw 6.

[0024] How to install Card 5:

[0025] First, screw the round nut 4 into the support shaft 1 to axially limit the support bearing 3. Two adjacent outer grooves 4.1 on the round nut 4 are close to the continuous inner groove within 1 / 4 of the circumference of the support shaft. Fine-tune the round nut 4 so that an outer groove 4.1 and an inner groove 1.1 are in the same radial direction. Then embed the card 5 between the outer groove and the inner groove in the same radial direction. The card 5 is fixed by a countersunk screw 6 to complete the installation of the card and prevent the round nut from loosening.

[0026] Working principle:

[0027] The power is input through the transmission shaft 7 in the support shaft 1, and is output through the first-stage planetary gear train, the second-stage planetary gear train and the third-stage planetary gear train in sequence, and finally transmits the working torque through the output bearing seat 2. The support bearing 3 withstands the large output torque and is locked and prevented from loosening through the cooperation of the round nut 4 and the card 5 to ensure the normal operation of the reducer.

[0028] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A round nut anti-loosening locking structure for a winch reducer, comprising a support shaft, an output bearing seat, a support bearing and a round nut, wherein a support bearing is arranged between the support shaft and the output bearing seat, and the support bearing located on the inner side is axially limited by the round nut, and the round nut is sleeved on the support shaft, characterized in that: The card is clamped between the round nut and the support shaft. The end face of the round nut away from the support bearing is circumferentially evenly distributed with several external card slots. The card is embedded in the external card slot and fixed by a countersunk screw. The support shaft is provided with an internal card slot corresponding to the card, and the card extends radially toward the internal card slot.

2. The anti-loosening and locking structure of round nuts for winch reducers according to claim 1 is characterized in that: A plurality of inner grooves are evenly distributed on 1 / 4 of the circumference of the support shaft.

3. The anti-loosening and locking structure of round nuts for winch reducers according to claim 2 is characterized in that: There are 8 outer card slots, and 6-8 continuous inner card slots are arranged inwardly of 1 / 4 of the circumference of the support shaft.

4. The anti-loosening and locking structure of round nuts for winch reducers according to claim 3 is characterized in that: The central angle between two adjacent inner card slots is 10°.

5. The anti-loosening and locking structure of round nuts for winch reducers according to claim 1 is characterized in that: The bottom of the external card slot is provided with a threaded hole corresponding to the countersunk screw, and the card is provided with a countersunk hole corresponding to the countersunk screw.

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