Special bearing for high-load low-speed goods elevator traction sheave
By designing a special bearing for high-load, low-speed freight elevator traction wheels and using a cage and elastic retainer structure made of brass and other materials, broken rollers can be removed axially, solving the problem of long maintenance time for existing bearings and improving maintenance efficiency and service life.
Patent Information
- Application Number
- CN202520134883.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2035-01-20
AI Technical Summary
The existing freight elevator traction wheel bearings are prone to roller breakage under heavy loads, resulting in long maintenance times and affecting the normal operation of factory production.
Design a special bearing for high-load, low-speed freight elevator traction wheels. The bearing uses a cage made of brass, tin bronze, or aluminum bronze. The rollers can be axially assembled from the cage. By setting an elastic retaining ring and positioning block structure on the inner ring, broken rollers can be axially removed, avoiding overall disassembly.
It shortens bearing maintenance time, reduces maintenance costs, and improves bearing lifespan and ease of operation.
Smart Images
Figure CN223524215U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of goods lift traction wheel bearing, especially relates to a high load low speed goods lift traction wheel special bearing. BACKGROUND
[0002] Due to the characteristics of large load and low speed of the goods lift, the bearing matched with the traction wheel is also selected as the high load low speed type, that is, the cylindrical roller bearing.
[0003] The structure of the existing bearing is shown in Figure 3 and Figure 4 , which comprises an outer ring and an inner ring, a retainer is arranged between the outer ring and the inner ring, a plurality of circumferentially distributed mounting holes are arranged on the retainer, cylindrical rollers are arranged in the mounting holes, the rollers are radially arranged in the mounting holes, the outer ring is connected to the inner ring through the rollers, one end of the outer ring is provided with an annular first boss, one end of the inner end is provided with an annular second boss, the first boss and the second boss are respectively located at two ends of the rollers, and the first boss and the second boss are used to limit the axial movement of the rollers. The assembly mode of the existing bearing is that the inner ring is first arranged in the retainer, then a plurality of rollers are arranged in the mounting holes of the retainer, and finally the outer ring is sleeved on the outer side of the retainer.
[0004] In the use process, it is found that due to the characteristics of large load of the goods lift, the bearing has a large load, and the bearing may still have a fault, and the most common fault is the fragmentation of the roller. For this kind of situation, the current way is to replace the entire bearing, but this needs to first disassemble the bearing from the traction wheel, and then assemble the new bearing back. The disassembly and assembly process is very troublesome and needs a long period of time, and during this period, the goods lift cannot be used. If the goods lift is repaired during the busy production period of the factory, it will undoubtedly cause inconvenience to the normal operation of the factory. Therefore, the existing goods lift traction wheel bearing has the defect of long maintenance time. UTILITY MODEL CONTENTS
[0005] The utility model is aimed at providing a high load low speed goods lift traction wheel special bearing. The utility model has the advantages of short maintenance time.
[0006] The technical scheme of the utility model is as follows: a high load low speed goods lift traction wheel special bearing, which comprises an outer ring and an inner ring, a retainer is arranged between the outer ring and the inner ring, one end of the outer ring is provided with an annular first boss, the retainer comprises a ring plate located on the inner side of the first boss, a plurality of retainer bars extending to the other end of the outer ring are arranged on the ring plate, cylindrical rollers are arranged between adjacent retainer bars, an annular groove is arranged on the outer circumferential surface of the inner ring, a resilient clasp is arranged in the annular groove, the outer side of the clasp exceeds the outer circumferential surface of the inner ring to form a second boss, and the first boss and the second boss are respectively located at two ends of the rollers.
[0007] The material of the retainer is brass, tin bronze or aluminum bronze.
[0008] The two sides of the retainer are provided with arc surfaces matched with the rollers.
[0009] The cross section of the collar is square, the material of the collar is spring steel, the collar is C-shaped, the annular groove is provided with a positioning block, the top surface of the positioning block is flush with the outer circumferential surface of the inner ring.
[0010] One end of the collar is provided with a protrusion extending to the other end of the collar, so that the gap between the two ends of the collar is between 1-1.5 mm, and the protrusion is located outside the positioning block.
[0011] The two ends of the roller are provided with chamfers.
[0012] Compared with the prior art, the retainer has only one side with a ring plate, the roller can be assembled into the retainer from the axial direction of the retainer, and the second protruding ring is formed on the collar of the inner ring, so that when the roller is broken, the collar can be removed, the broken roller can be taken out axially, and a new roller can be replaced, and the bearing does not need to be disassembled as a whole, thereby reducing the maintenance time of the bearing.
[0013] In addition, through further structural improvement, by arranging the protrusion in the annular groove of the inner ring, the collar cannot rotate, the gap between the two ends of the collar is fixed after the bearing is installed, and the area with sufficient operation space is faced, so that the collar is convenient to disassemble, and the maintenance time of the bearing is further shortened. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 is the schematic diagram of explosion of the utility model.
[0015] Figure 2 is the sectional view of the utility model.
[0016] Figure 3 is the schematic diagram of explosion of the prior art bearing.
[0017] Figure 4 is the sectional view of the prior art bearing.
[0018] The marks in the drawings are: 1-outer ring, 2-inner ring, 3-retainer, 4-first boss, 5-ring plate, 6-retaining bar, 7-roller, 8-annular groove, 9-clamp ring, 10-second boss, 11-circular arc surface, 12-positioning block, 13-protrusion, 14-chamfer. DETAILED DESCRIPTION
[0019] The utility model will be further explained in connection with the drawings and examples, but not as the basis for limiting the utility model.
[0020] Embodiment. A kind of high load low speed freight elevator traction wheel special bearing, as shown in Fig. Figure 1 It includes outer ring 1 and inner ring 2, and retainer 3 is arranged between outer ring 1 and inner ring 2, and the left end of outer ring 1 is provided with annular first boss 4, and first boss 4 and outer ring 1 are integrally formed on the same part by machining.
[0021] The retainer 3 includes ring plate 5 located in the inner side of first boss 4, and outer ring 1 and inner ring 2 are kept a certain distance from ring plate 5. A plurality of retaining bars 6 extending to the right are provided on the ring plate 5, and circular arc surfaces 11 are provided on both sides of the retaining bars 6. The material of the retainer 3 is brass, tin bronze or aluminum bronze, and the copper retainer 3 has good lubricity and wear resistance, and long service life. A mounting hole is provided between adjacent retaining bars 6, a cylindrical roller 7 is arranged in the mounting hole, the roller 7 is placed in the mounting hole from the axial direction of the retainer 3, the roller 7 is attached to the circular arc surfaces 11 on both sides, and chamfers 14 are provided at both ends of the roller 7, and the chamfer size is 0.8*0.8mm.
[0022] An annular groove 8 is provided on the outer circumferential surface of the right end of the inner ring 2, and a resilient clamp ring 9 is arranged in the annular groove 8, the cross section of the clamp ring 9 is square, the material of the clamp ring 9 is spring steel, the clamp ring 9 is C-shaped, and the outer side of the clamp ring 9 exceeds the outer circumferential surface of the inner ring 2 to form a second boss 10.
[0023] A positioning block 12 is arranged in the annular groove 8, the positioning block 12 is located between both ends of the clamp ring 9, and the top surface of the positioning block 12 is flush with the outer circumferential surface of the inner ring 2. The positioning block 12 and the inner ring 2 are integrally formed on the same part by machining.
[0024] One end of the clamp ring 9 is provided with a protrusion 13 extending to the other end of the clamp ring 9, so that the gap between both ends of the clamp ring 9 is between 1-1.5mm, the protrusion 13 is located on the outer side of the positioning block 12, and the outer wall of the protrusion 13 is tangent to the outer wall of the clamp ring 9.
[0025] The use method is as shown in Fig. Figure 2 After the bearing is installed, a hole card is arranged on the left side of the outer ring 1, the hole card limits the movement of the outer ring 1 and the retainer 3 to the left, and a shaft card is arranged on the right side of the inner ring 2 to limit the movement of the inner ring 2 to the right.
[0026] When the roller 7 is broken during the busy production of the factory and the elevator cannot be stopped for a long time, a screwdriver is inserted into the gap of the clamping ring 9, one end of the clamping ring 9 is lifted, then the screwdriver is moved along the inner side of the clamping ring 9, the clamping ring 9 is separated from the annular groove 8, and the clamping ring 9 is removed. The broken roller 7 is found, a new roller 7 is replaced, the clamping ring 9 is installed, and the bearing does not need to be disassembled as a whole, so that the maintenance time is short.
[0027] It should be noted that, when the inner and outer rings of the bearing and the retainer 3 are seriously worn by the broken roller 7, the bearing still needs to be replaced as a whole in the conventional way. The scene suitable for the utility model is that, when the roller 7 is broken but the inner and outer rings and the retainer 3 are not worn, the broken roller 7 is replaced, so that the maintenance time is reduced. Meanwhile, when the inner and outer rings and the retainer 3 are already worn but the wear range is small, the roller can be replaced first, so that the bearing is restored to be usable, and the bearing can be replaced as a whole when the factory is not busy.
[0028] In the description of the utility model, it should be understood that the directions or position relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.
Claims
1. A high load low speed special bearing for a traction sheave of a passenger elevator, comprising an outer ring (1) and an inner ring (2) between which a retainer (3) is provided, one end of the outer ring (1) being provided with an annular first boss (4), characterized in that: The cage (3) comprises a ring plate (5) inside the first boss (4), a plurality of retaining bars (6) extending to the other end of the outer ring (1) are arranged on the ring plate (5), a cylindrical roller (7) is arranged between adjacent retaining bars (6), an annular groove (8) is arranged on the outer circumferential surface of the inner ring (2), a resilient clasp (9) is arranged in the annular groove (8), the outer side of the clasp (9) exceeds the outer circumferential surface of the inner ring (2) to form a second boss (10), and the first boss (4) and the second boss (10) are respectively located at the two ends of the roller (7).
2. A high load, low speed goods lift traction sheave dedicated bearing according to claim 1 characterised in that: The material of the cage (3) is brass, tin bronze or aluminum bronze.
3. A high load, low speed goods lift traction sheave dedicated bearing according to claim 2, characterized in that: Arc surfaces (11) matched with the roller (7) are arranged on the two sides of the retaining bar (6).
4. A high load, low speed goods lift pulley wheel specialized bearing according to claim 1 characterized by: The cross section of the clasp (9) is square, the material of the clasp (9) is spring steel, the clasp (9) is C-shaped, a positioning block (12) is arranged in the annular groove (8), the positioning block (12) is located between the two ends of the clasp (9), and the top surface of the positioning block (12) is flush with the outer circumferential surface of the inner ring (2).
5. A high load, low speed goods lift traction sheave dedicated bearing according to claim 4, characterized in that: One end of the clasp (9) is provided with a protrusion (13) extending to the other end of the clasp (9), so that the gap between the two ends of the clasp (9) is between 1-1.5 mm, and the protrusion (13) is located outside the positioning block (12).
6. A high load, low speed goods lift pulley wheel specialized bearing according to claim 1 characterized by: Chamfers (14) are arranged at the two ends of the roller (7).