Leakage control device for speed reducer

Abstract

A reducer leakage control device relates to the technical field of reducer oil leakage prevention. The outer side of the large gland is connected with a small gland through a bolt, an annular high-pressure capsule is installed in a space between the small gland and the large gland, a space formed by combining an inner hole of the high-pressure capsule, the baffle ring, the shaft and the small gland is filled with sealing filler, a breather pipe is fixed to the outer side of the high-pressure capsule in a vulcanization mode, and the breather pipe extends out of a through hole and then is in threaded sealing connection with a pressure sensor. The utility model has the beneficial effects that the small gland can be taken out by detaching the bolt of the small gland, the rope-shaped sealing filler is spirally wound outside the shaft without detaching the coupler on the shaft, the high-pressure capsule is arranged on the outer side of the sealing filler, and compressed air with a set pressure value is filled in the high-pressure capsule, so that the sealing filler can be taken out. The high-pressure capsule has the advantages that a pretightening degree can be provided for the sealing filler, the abrasion degree of the sealing filler is monitored through the pressure sensor, and when the air pressure of the high-pressure capsule is reduced to a set value, the sealing filler needs to be replaced or filled.

Description

Technical Field

[0001] The utility model relates to the technical field of oil leakage prevention for reducers, in particular to a leakage prevention device for reducers. Background Art

[0002] The input and output shafts in the reducer are generally sealed with rubber skeleton oil seals. The oil seals are installed in the sealing flange grooves, and the inner diameter of the oil seals fits tightly with the input and output shaft diameters. Factors such as poor shaft diameter finish, excessive size and shape and position tolerances, and oil seal aging will all cause oil leakage. As the reducer runs for a long time, the oil seal will inevitably experience rubber aging and lip wear. Once oil leakage occurs, it is necessary to stop the machine in time to replace the oil seal, remove the couplings and sealing flanges at the input and output shafts, and then replace the oil seal, which is a large workload and low efficiency. Utility Model Content

[0003] In order to solve the current problems of untimely replacement of reducer oil seal and heavy workload, the utility model provides a reducer leakage prevention device.

[0004] The technical solution provided by the utility model is: a reducer leakage prevention device, including a large gland, the large gland is connected to the reducer housing by bolts, the inner side of the large gland is pressed against the bearing, the reducer housing is connected to the shaft through the bearing, the inner hole of the large gland is extended to the shaft by a retaining ring on the outer side of the bearing, the outer side of the large gland is connected to the small gland by bolts, an annular high-pressure capsule is installed in the space between the small gland and the large gland, the outer circle of the high-pressure capsule is fitted on the inner hole of the large gland, the space formed by the inner hole of the high-pressure capsule, the retaining ring, the shaft and the small gland is filled with sealing filler, a vent pipe is vulcanized and fixed on the outer side of the high-pressure capsule, a through hole is opened on the small gland, and the vent pipe extends out of the through hole and is threadedly sealed and connected to a pressure sensor.

[0005] An inflation nozzle is installed on the ventilation pipe.

[0006] The small gland is composed of two symmetrical halves, and the joint surfaces of the small glands of the two halves pass through the axis of the shaft.

[0007] The beneficial effects of the utility model are as follows: when replacing or filling the sealing packing of the small gland of the half body, the small gland can be taken out by dismantling the bolts of the small gland, and the rope-shaped sealing packing can be spirally wound around the outside of the shaft, without removing the coupling on the shaft. A high-pressure capsule is arranged on the outside of the sealing packing, and compressed air of a set pressure value is filled in the high-pressure capsule. Firstly, a pre-tightening degree can be given to the sealing packing, and secondly, the wear degree of the sealing packing can be monitored by the pressure sensor. When the air pressure of the high-pressure capsule is reduced to the set value, the sealing packing needs to be replaced or filled. When the sealing packing is short of, gas can be added to the high-pressure capsule to further squeeze the sealing packing and increase the service life of the sealing packing. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] AttachedFigure 1 It is a structural schematic diagram of the utility model;

[0009] Attached Figure 2 is an enlarged view of point A in the accompanying drawing;

[0010] Attached Figure 3 It is a structural schematic diagram of the pressure cover in the utility model.

[0011] In the figure, 1-large gland, 2-small gland, 3-sealing packing, 4-high pressure capsule, 5-retaining ring, 6-reducer housing, 7-shaft, 8-ventilation pipe, 9-pressure sensor, 10-inflating nozzle, 11-through hole. DETAILED DESCRIPTION

[0012] like Figures 1 to 3 As shown, the reducer leakage treatment device includes a large gland 1, which is connected to the reducer housing 6 by bolts, the inner side of the large gland 1 is pressed against the bearing, the reducer housing 6 is connected to the shaft 7 through the bearing, the inner hole of the large gland 1 extends a retaining ring 5 toward the shaft 7 outside the bearing, the outer side of the large gland 1 is connected to the small gland 2 by bolts, an annular high-pressure capsule 4 is installed in the space between the small gland 2 and the large gland 1, the outer circle of the high-pressure capsule 4 is fitted on the inner hole of the large gland 1, the space formed by the inner hole of the high-pressure capsule 4, the retaining ring 5, the shaft 7 and the small gland 2 is filled with sealing filler 3, a vent pipe 8 is vulcanized and fixed on the outer side of the high-pressure capsule 4, a through hole 11 is opened on the small gland 2, and the vent pipe 8 extends out of the through hole 11 and is threadedly sealed and connected to the pressure sensor 9.

[0013] An air filling nozzle 10 is installed on the vent pipe 8 for replenishing gas.

[0014] The small gland 2 is composed of two symmetrical halves, and the joint surfaces of the two halves of the small gland 2 pass through the axis of the shaft 7. When the half small gland 2 is replaced or filled with the sealing packing 3, the small gland 2 can be taken out by removing the bolts of the small gland 2, and the rope-shaped sealing packing 3 can be spirally wound around the outside of the shaft 7, without removing the coupling on the shaft 7.

[0015] A high-pressure capsule 4 is arranged outside the sealing packing 3, and compressed air of a set pressure value is filled into the high-pressure capsule 4. Firstly, a pre-tightening degree can be given to the sealing packing 3, and secondly, the wear degree of the sealing packing 3 can be monitored through the pressure sensor 9. When the air pressure of the high-pressure capsule 4 drops to the set value, the sealing packing 3 needs to be replaced or filled.

Claims

1. A reducer leakage prevention device, comprising a large gland (1), characterized in that: The large gland (1) is connected to the reducer housing (6) by bolts. The inner side of the large gland (1) is pressed against the bearing. The reducer housing (6) is connected to the shaft (7) through the bearing. The inner hole of the large gland (1) extends a retaining ring (5) toward the shaft (7) on the outer side of the bearing. The outer side of the large gland (1) is connected to the small gland (2) by bolts. An annular high-pressure capsule (4) is installed in the space between the small gland (2) and the large gland (1). The outer circle of the high-pressure capsule (4) fits on the inner hole of the large gland (1). The space formed by the inner hole of the high-pressure capsule (4), the retaining ring (5), the shaft (7) and the small gland (2) is filled with sealing filler (3). A vent pipe (8) is vulcanized and fixed on the outer side of the high-pressure capsule (4). A through hole (11) is opened on the small gland (2). After the vent pipe (8) extends out of the through hole (11), it is threadedly sealed and connected to a pressure sensor (9).

2. The reducer leakage prevention device according to claim 1, characterized in that: An air filling nozzle (10) is installed on the vent pipe (8).

3. The reducer leakage prevention device according to claim 1, characterized in that: The small pressure cover (2) is composed of two symmetrical halves, and the joint surfaces of the small pressure covers (2) of the two halves pass through the axis of the shaft (7).

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