CN222141790U - Bearing special for flood discharge gate - Google Patents

Abstract

The utility model discloses a bearing for flood discharge gate, comprising an outer ring (2), an inner ring (5) having an arc surface mounted on the inner side of the outer ring, and a gap formed between the outer ring and the inner ring, wherein the outer ring is formed by consolidating two semicircular half rings (2-1), annular grooves are provided on the edges of both sides of the outer ring, and a fastening ring (1) is provided in the annular groove to fasten the outer ring, annular sealing grooves are provided on both sides of the inner wall of the outer ring, and a sealing ring I (3) is provided in the sealing groove, a plurality of grooves are distributed at intervals on the arc surface where the inner ring and the outer ring meet, a solid lubricant (8) is embedded in the groove, an annular oil filling groove (6) is provided on the inner wall of the inner ring along the center line direction, and oil filling holes are provided in the oil filling groove and connected to the gap. The left and right sides of the outer ring are provided with sealing rings II, and the sealing ring II blocks the gap where the outer ring and the inner ring meet. The scheme can resist the impact of water flow, reduce the amount of sediment entering, withstand a larger torque value, and ensure the stable operation of the gate.

Description

Bearing special for flood discharge gate

Technical Field

The technical scheme relates to a mechanical structure, in particular to a special bearing for a flood discharge gate.

Background

It is well known that in the operation of a water conservancy dam, a gate bearing plays key roles in supporting, bearing, friction reduction, stability improvement, operation precision improvement and the like in the operation of a gate. The technical staff in the station find that the abnormal running speed is uneven in the lifting and descending processes of part of the gates, and after inspection, the main wheels of the gates cannot normally rotate due to the damage of the bearings, and the prior art has the following defects that 1, the stability is poor, as shown in figure 5, the outer ring of the bearing consists of a left ring and a right ring, the bearing is difficult to bear the strong torsion caused by the operation of the gates through the connection of bolts, the left ring and the right ring generate relative movements in different directions, so that the bolts deform, break and even the bearing fails, the normal running of the gates is seriously influenced, 2, the tightness is poor, because the gate bearings are arranged under water, huge water pressure and water flow impact are born during flood discharge, sediment is mixed in the water flow, the sediment is easy to enter the cracks of the bearings, the abrasion is increased, the service life of equipment is shortened, the maintenance frequency is increased, the maintenance cost is increased, and the lubricating degree is also reduced, and the energy consumption is increased.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art and provide the special bearing for the flood discharge gate, which has the advantages of stable structure, capability of bearing larger torsion, good sealing performance and capability of reducing sediment entering, thereby ensuring the stable operation of the gate and improving the economic benefit. The specific scheme is as follows.

The special bearing for the flood discharge gate comprises an outer ring, wherein an arc inner ring is sleeved on the inner side of the outer ring, a crack is formed between the outer ring and the inner ring, the special bearing is characterized in that the outer ring is formed by fixedly connecting two semicircular half rings, annular grooves are formed in the edges of two sides of the outer ring, fastening rings are arranged in the annular grooves and fasten the outer ring, annular sealing grooves are formed in two sides of the inner wall of the outer ring, sealing rings I are arranged in the sealing grooves, a plurality of grooves are distributed at intervals on the arc surface where the inner ring and the outer ring are connected, solid lubricants are inlaid in the grooves, annular oil injection grooves are formed in the inner wall of the inner ring along the middle line direction, and oil injection holes are formed in the oil injection grooves at intervals and are communicated with the crack.

The left surface and the right surface of the outer ring are provided with sealing rings II, and the sealing rings II block a joint seam between the outer ring and the inner ring.

The solid lubricant is polytetrafluoroethylene composite material.

Compared with the prior art, the technical scheme is as follows:

1. the surface of the inner ring is arc-shaped and convex outwards and cannot be directly embedded into the outer ring, so that the left ring and the right ring are sleeved outside the inner ring in the prior art in a splicing way, and are fixed by bolts, the way is difficult to bear strong torsion (shown by an arrow in the attached figure 5) caused by the operation of the gate, so that the bearing is damaged too early, and the device is formed by splicing two semicircular half rings, has stronger torsion bearing capability and is obviously improved in stability due to the reinforcement of the fastening ring. Through testing, the valve can bear a torque value far exceeding the prior art, and ensures that the valve operates stably;

2. The sealing ring I has the functions of preventing sediment from entering a crack between the outer ring and the inner ring, reducing abrasion and prolonging service life, and the sealing ring II further enhances sealing effect, can resist water flow impact, forms protection at the crack opening and reduces sediment entering amount;

3. On one hand, the bearing can inject lubricating oil into the crack through the oil injection groove and the oil injection hole, on the other hand, the solid lubricant is worn into tiny lubricating powder under the relative movement of the inner ring and the outer ring, and a solid lubricating film is formed in the crack between the inner ring and the outer ring, so that the lubricating effect is further enhanced, the wear consumption is reduced, the lubricating time is prolonged, the maintenance frequency is reduced, and the maintenance cost is reduced. The polytetrafluoroethylene composite material has outstanding thermal stability, corrosion resistance and tribological performance, and is more suitable for the running scene of the bearing.

Drawings

FIG. 1 is a schematic cross-sectional structure of embodiment 1 of the present utility model;

FIG. 2 is a schematic perspective view of embodiment 1 of the present utility model;

FIG. 3 is a schematic perspective view of embodiment 1 of the present utility model;

FIG. 4 is a schematic view showing an outer ring disassembled structure according to embodiment 1 of the present utility model;

Fig. 5 is a schematic perspective view of the closest prior art of the present utility model.

The reference numerals indicate 1 fastening ring, 2 outer ring, 2-1 half ring, 3 sealing ring I, 4 sealing ring II, 5 inner ring, 6 oil injection groove, 7 oil injection hole, 8 solid lubricant, 9 existing bearing, 9-1 left ring, 9-2 right ring and 9-3 bolt.

Detailed Description

1, See fig. 1-4, special bearing of floodgate, including outer lane 2, the inboard cover of outer lane is equipped with cambered surface inner circle 5, forms the crack between outer lane and the inner circle, its characterized in that, the outer lane by two semicircular half-rings 2-1 concreties and forms, the border of outer lane both sides is opened there is the ring channel to be equipped with fastening ring 1 in the ring channel and fasten the outer ring, open the both sides of outer lane inner wall has annular seal groove and be equipped with sealing washer I3 in the seal groove, inner lane and the cambered surface interval distribution of outer lane handing-over have a plurality of recesses, inlay in the recess has solid lubricant 8, open along the central line direction in the inner lane inner wall has annular oil filler neck 6, the interval has oil filler point 7 and communicates to the crack in the oil filler neck.

The left surface and the right surface of the outer ring are provided with sealing rings II4, and the sealing rings II block a joint seam between the outer ring and the inner ring.

The solid lubricant is polytetrafluoroethylene composite material.

Compared with the prior art, the embodiment is as follows:

1. referring to fig. 5, the surface of the inner ring is arc-shaped and convex, and cannot be directly embedded into the outer ring, so that the existing bearing 9 is sleeved outside the inner ring in a mode of splicing the left ring 9-1 and the right ring 9-2, and then the left ring and the right ring are fixed by bolts 9-3, the mode is difficult to bear strong torsion (shown by an arrow in fig. 5) caused by gate operation, so that the bearing is damaged too early, and the device is formed by splicing two semicircular half rings, so that the torsion bearing capability is stronger, the fastening ring is reinforced, and the stability is obviously improved. Through testing, the valve can bear a torque value far exceeding the prior art, and ensures that the valve operates stably;

2. The sealing ring I has the functions of preventing sediment from entering a crack between the outer ring and the inner ring, reducing abrasion and prolonging service life, and the sealing ring II further enhances sealing effect, can resist water flow impact, forms protection at the crack opening and reduces sediment entering amount;

3. On one hand, the bearing can inject lubricating oil into the crack through the oil injection groove and the oil injection hole, on the other hand, the solid lubricant is worn into tiny lubricating powder under the relative movement of the inner ring and the outer ring, and a solid lubricating film is formed in the crack between the inner ring and the outer ring, so that the lubricating effect is further enhanced, the wear consumption is reduced, the lubricating time is prolonged, the maintenance frequency is reduced, and the maintenance cost is reduced. The polytetrafluoroethylene composite material has outstanding thermal stability, corrosion resistance and tribological performance, and is more suitable for the running scene of the bearing.

Claims (3)

1. A bearing for a flood discharge gate, comprising an outer ring (2), an inner ring (5) having an arc surface mounted thereon, and a gap formed between the outer ring and the inner ring, wherein the outer ring is formed by consolidating two semicircular half rings (2-1), annular grooves are formed on the edges of both sides of the outer ring, and a fastening ring (1) is provided in the annular groove to fasten the outer ring, annular sealing grooves are formed on both sides of the inner wall of the outer ring, and a sealing ring I (3) is provided in the sealing groove, a plurality of grooves are arranged at intervals on the arc surface where the inner ring and the outer ring meet, and a solid lubricant (8) is embedded in the groove, and an annular oil injection groove (6) is formed on the inner wall of the inner ring along the center line direction, and oil injection holes (7) are arranged at intervals in the oil injection groove and connected to the gap. 2. The bearing for flood discharge gate according to claim 1 is characterized in that sealing rings II (4) are provided on the left and right sides of the outer ring, and the sealing ring II seals the gap where the outer ring and the inner ring meet. 3. The special bearing for flood discharge gate according to claim 1 is characterized in that the solid lubricant is a polytetrafluoroethylene composite material.