Special bearing for flood discharge gate
By using semicircular half-ring and curved inner ring structure reinforcement in gate bearings, combined with sealing ring and solid lubricant, the problem of insufficient stability and sealing in the prior art is solved, and a higher torque bearing capacity is achieved and longer service life.
Patent Information
- Application Number
- CN202422760323.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-11-13
AI Technical Summary
Existing gate bearings have poor stability during operation, are difficult to withstand strong torque, and have poor sealing, which leads to the entry of silt and sand and aggravate wear, reduce equipment life and increase maintenance costs.
Adopt an outer ring and arc-surface inner ring structure composed of two semicircular half-circular half-circles, combining the fastening ring and sealing ring, solid lubricant is embedded between the inner and outer rings, and stronger torque bearing and sealing is achieved through the annular groove and the oil injection groove. Effect.
It significantly improves the stability and sealing of the bearing, extends the service life, reduces maintenance frequency and cost, and improves the operating stability and economic benefits of the gate.
Smart Images
Figure CN222141790U_ABST
Abstract
Description
Technical Field
[0001] The technical solution relates to a mechanical structure, specifically a bearing dedicated to a flood discharge gate. Background Art
[0002] As we all know, in the operation of water conservancy dams, gate bearings play a key role in supporting, bearing, reducing friction, improving stability, and improving operation accuracy. Our station technicians found that some gates often have uneven operating speeds during the lifting and lowering process. After inspection, these gates cannot rotate normally due to bearing damage. After comprehensive analysis and summary, the existing technology has the following deficiencies: 1. Poor stability: As shown in the attached Figure 5 As shown in the figure, the outer ring of the bearing consists of a left ring and a right ring, which are connected by bolts. The bearing is difficult to withstand the strong torque caused by the operation of the gate. The left ring and the right ring move relative to each other in different directions, resulting in deformation, breakage, and even bearing failure of the bolts, which seriously affects the normal operation of the gate. 2. Poor sealing: Since the gate bearing is located underwater, it has to withstand huge water pressure and water flow impact when discharging flood water. The water flow is also mixed with mud and sand, which can easily enter the gap of the bearing, aggravating wear, reducing the service life of the equipment, increasing the maintenance frequency, and increasing the maintenance cost. At the same time, it also reduces the degree of lubrication and increases energy consumption. Utility Model Content
[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a special bearing for flood discharge gates which has a stable structure, can withstand greater torque, has good sealing performance, and can reduce the entry of sediment, thereby ensuring stable operation of the gate and improving economic benefits. The specific scheme is as follows.
[0004] A special bearing for flood discharge gates comprises an outer ring, an inner ring with an arc surface is sleeved on the inner side of the outer ring, and a gap is formed between the outer ring and the inner ring. The characteristic is that the outer ring is formed by consolidating two semicircular half rings, annular grooves are provided on the edges on both sides of the outer ring, and a fastening ring 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 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, and solid lubricants are embedded in the grooves, and an annular oil filling groove 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.
[0005] The left and right sides of the outer ring are provided with sealing rings II, and the sealing rings II seal the gap where the outer ring and the inner ring meet.
[0006] The solid lubricant is a polytetrafluoroethylene composite material.
[0007] Compared with the prior art, this technical solution:
[0008] 1. Since the inner ring surface is arc-shaped and convex, it cannot be directly embedded in the outer ring. Therefore, the existing technology uses the left ring and the right ring to fit the outer part of the inner ring, and then fix the left ring and the right ring with bolts. This method is difficult to withstand the strong torque caused by the operation of the gate (such as the attached Figure 5 The device is composed of two semicircular half circles, which has a stronger ability to withstand torque. With the reinforcement of the fastening ring, the stability is significantly improved. After testing, it can withstand torque values far exceeding the existing technology, ensuring the stable operation of the gate.
[0009] 2. The function of sealing ring I is to prevent mud and sand from entering the gap between the outer ring and the inner ring, reduce wear and extend service life. Sealing ring II further enhances the sealing effect, can resist water flow impact, form protection at the mouth of the gap, and reduce the amount of mud and sand entering;
[0010] 3. On the one hand, this bearing can inject lubricating oil into the gap through the oil filling groove and oil filling hole; on the other hand, the solid lubricant is worn into tiny lubricating powder under the relative movement of the inner and outer rings, forming a solid lubricating film in the gap between the inner and outer rings, further enhancing the lubrication effect, reducing wear and consumption, and can extend the lubrication time, reduce maintenance frequency, and reduce maintenance costs. Polytetrafluoroethylene composite materials have outstanding thermal stability, corrosion resistance and tribological properties, and are more suitable for the operation scenario of this bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic cross-sectional structure diagram of embodiment 1 of the utility model;
[0012] Figure 2 This is a schematic diagram of the three-dimensional structure of Example 1 of the utility model Figure 1 ;
[0013] Figure 3 This is a schematic diagram of the three-dimensional structure of Example 1 of the utility model Figure 2 ;
[0014] Figure 4 This is a schematic diagram of the disassembled structure of the outer ring of Embodiment 1 of the utility model;
[0015] Figure 5 It is the closest prior art three-dimensional structural schematic diagram of the utility model.
[0016] Explanation of the reference numerals: 1 fastening ring, 2 outer ring, 2-1 half ring, 3 sealing ring I, 4 sealing ring II, 5 inner ring, 6 oil filling groove, 7 oil filling hole, 8 solid lubricant, 9 existing bearing, 9-1 left ring, 9-2 right ring, 9-3 bolt. DETAILED DESCRIPTION
[0017] Example 1, see attached Figure 1-4, a special bearing for flood discharge gates, comprising an outer ring 2, an cambered inner ring 5 is sleeved on the inner side of the outer ring, and a gap is 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 on 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 Ⅰ3 is provided in the sealing groove, a plurality of grooves are distributed at intervals on the cambered surface where the inner ring and the outer ring meet, a solid lubricant 8 is inlaid 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 7 are provided in the oil filling groove and connected to the gap.
[0018] The left and right sides of the outer ring are provided with sealing rings II 4, and the sealing ring II seals the gap where the outer ring and the inner ring meet.
[0019] The solid lubricant is a polytetrafluoroethylene composite material.
[0020] Compared with the prior art, this embodiment:
[0021] 1. See attached Figure 5 Since the inner ring surface is arc-shaped and convex, it cannot be directly embedded in the outer ring. Therefore, the existing bearing 9 is mounted on the outside of the inner ring by combining 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. This method is difficult to withstand the strong torque caused by the operation of the gate (such as the attached Figure 5 The device is composed of two semicircular half circles, which has a stronger ability to withstand torque. With the reinforcement of the fastening ring, the stability is significantly improved. After testing, it can withstand torque values far exceeding the existing technology, ensuring the stable operation of the gate.
[0022] 2. The function of sealing ring I is to prevent mud and sand from entering the gap between the outer ring and the inner ring, reduce wear and extend service life. Sealing ring II further enhances the sealing effect, can resist water flow impact, form protection at the mouth of the gap, and reduce the amount of mud and sand entering;
[0023] 3. On the one hand, this bearing can inject lubricating oil into the gap through the oil filling groove and oil filling hole; on the other hand, the solid lubricant is worn into tiny lubricating powder under the relative movement of the inner and outer rings, forming a solid lubricating film in the gap between the inner and outer rings, further enhancing the lubrication effect, reducing wear and consumption, and can extend the lubrication time, reduce maintenance frequency, and reduce maintenance costs. Polytetrafluoroethylene composite materials have outstanding thermal stability, corrosion resistance and tribological properties, and are more suitable for the operation scenario of this bearing.
Claims
1. A bearing for a 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 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, an annular oil injection groove (6) is provided 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 special bearing for flood discharge gate according to claim 1 is characterized in that: The left and right sides of the outer ring are provided with sealing rings II (4), 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.