CN209818564U

CN209818564U - Water-cooling locking bearing

Info

Publication number: CN209818564U
Application number: CN201820372239.5U
Authority: CN
Inventors: 魏道德
Original assignee: Zhangjiajie Institute of Aeronautical Engineering
Current assignee: Zhangjiajie Institute of Aeronautical Engineering
Priority date: 2018-03-19
Filing date: 2018-03-19
Publication date: 2019-12-20
Anticipated expiration: 2028-03-19

Abstract

The utility model provides a water-cooling locking bearing, water-cooling locking bearing comprises bearing, cooler (4), locking screw (3), water tank, the cloth that absorbs water, and water-cooling locking bearing basic structure is: 1) the inner ring (2) is increased in width on the basis of the inner ring of the existing specification and model, a threaded hole B (21) is machined in the increased width area, and the threaded hole B (21) is used for installing a locking screw (3); 2) the outer ring (1) is provided with a threaded hole A (11), the threaded hole A (11) is used for installing the cooler (4), and the cooler (4) and the threaded hole B (21) are separated in position during design to prevent installation conflict; 3) the outer circumference of the outer ring (1) is provided with a clamping groove, the water tank is used for storing cooling water, the outlet of the water tank is connected with a water inlet (43) of water-absorbing cloth, and the water-cooling locking bearing is favorable for reducing the friction force of the inner ring, the outer ring and balls or rollers and reducing the temperature of the bearing and a main shaft, so that the service life of the bearing is prolonged, the difficulty in replacing the bearing is reduced, and the main shaft is not easy to damage.

Description

Water-cooling locking bearing

Technical Field

The utility model belongs to mechanical product especially relates to a bearing.

Background

The bearing is a transmission part commonly used in the mechanical industry, the basic structure of the bearing comprises an outer ring, an inner ring and a roller or a roller, under normal conditions, the inner ring and a main shaft are in interference fit, the fit between the outer ring and a bearing seat is divided into two types according to the classification of the bearing seat, the bearing seat is divided into two types, one type is a bearing position of a machine tool, the other type is an independent bearing seat, the former is in interference fit with the outer ring of the bearing, the latter is used for locking the upper part and the lower part of the bearing seat through a screw rod, the bearing generates heat due to the friction between the inner ring and the outer ring of the bearing and the ball or the roller, the heat generated by the bearing has obvious adverse effect on the service life of the bearing, a method for reducing the heat generation commonly adopted by the mechanical industry is to add lubricating grease, the lubricating grease reduces the friction force of mechanical parts, thereby the, the heat dissipation effect is limited, for mining machinery, casting machinery and polarization machinery with severe working conditions, the working conditions of the bearing are also very severe, the service life of the bearing is limited, through retrieval, a plurality of related patents of water-cooling bearing seats exist, and the working temperature of the bearing is reduced by reducing the temperature of the bearing seat.

SUMMERY OF THE UTILITY MODEL

The technical problems are as follows:

1. the interference fit has the technical problem that the interference value is better controlled for products with definite purposes, for example, for mining machinery, the interference value can be designed to be larger, for medical instruments, the requirements on noise prevention and vibration prevention are stricter, and the interference value is relatively smaller, but for motor products with indefinite purposes, only empirical values can be adopted, and the interference value is difficult to design for specific products;

2. the problem of the empirical interference value is also solved, the interference value has an upper limit and a lower limit, the upper limit is during processing, the old bearing is difficult to dismount when the bearing is replaced, the main shaft is easy to damage during violent dismounting, the lower limit is during processing, the inner ring and the main shaft are easy to loosen, the inner ring and the main shaft are loose, the main shaft is reduced in size and damaged, the situation that the main shaft is assembled when part of product processing size breaks through the upper limit and the lower limit is not rare in any actual processing process, and the product problem is larger;

3. interference fit has great influence on high-rotating-speed products, for example, a motor with the rotating speed of 20000 rpm, the interference fit control is quite strict, for example, a 6204 bearing is taken as an example, the position size of a main shaft bearing can only be between 20.01mm and 20.015mm, the size of a bearing seat can only be between 46.99mm and 46.995mm, the product qualification rate of the high-rotating-speed motor is low, mainly, noise and vibration are unqualified, and the size standard is difficult to control by a common machine tool;

4. the cooling device mainly comprising the water-cooled bearing seat has low cooling efficiency, is difficult to cool to the main shaft, the main shaft temperature of mining machinery and crushing machinery is often very high, the water-cooled bearing seat is difficult to effectively reduce the main shaft temperature, and the main shaft temperature is transmitted to the inner ring, so that the service life of the bearing is also adversely affected;

5. the problem of outer ring looseness cannot be ignored, the outer ring is easy to loosen without an inner ring, but the outer ring and the bearing seat can also be loosened due to high rotating speed or large-vibration machinery.

The technical scheme is as follows: the utility model provides a water-cooling locking bearing, water-cooling locking bearing comprises bearing, cooler 4, locking screw 3, water tank, the cloth that absorbs water, and water-cooling locking bearing basic structure is:

1) the width of the inner ring 2 is increased on the basis of the inner ring with the existing specification and model, a threaded hole B21 is processed in the increased width area, and the threaded hole B21 is used for installing a locking screw 3;

2) the outer ring 1 is provided with a threaded hole A11, the threaded hole A11 is used for installing the cooler 4, the cooler 4 and the threaded hole B21 are separated from each other to prevent installation conflict, namely the threaded hole B21 cannot be arranged in the inner area of the cooler 4;

3) the outer ring 1 is provided with a clamping groove,

the water tank is a device for storing cooling water, and the outlet of the water tank is connected with the water inlet 43 of the water absorbing cloth;

the water-absorbing cloth is made of cotton and linen products with good water-absorbing performance.

The cooler 4 is a recessed annular chamber made of metal materials and comprises an outer ring 44, an inner ring 45, straight holes 42, water permeable openings 41, a bottom surface 46 and water absorbing cloth water inlet openings 43, the positions and the numbers of the straight holes 42 and the threaded holes A11 correspond, thereby utilizing the screw to lock the cooler 4 on the outer ring 1, the recessed space formed by the outer ring 44, the inner ring 45 and the bottom surface 46 is the cooling chamber, the inner ring 45 is provided with N permeable holes, N is two or more, the connection between the water inlet 43 of the water absorbing cloth and the water tank is divided into two types, one type is that the water inlet 43 of the water absorbing cloth is directly connected with the water tank, the other type is that the water inlet 43 of the water absorbing cloth passes through the bearing seat to be connected with the water tank or the water inlet 43 of the water absorbing cloth is arranged on the bearing seat, and the water absorbing cloth is distributed along the water tank-the water inlet 43 of the water absorbing cloth-the cooling chamber, thereby leading the cooling;

the cooler cover 5 is used for covering the cooling chamber and preventing the water absorption cloth from scattering;

the threaded holes A11 are distributed on one side end face of the outer ring 1 in a circumferential array.

The locking screw 3 consists of anti-rotation holes 31, thread sections 32 and locking ends 33, wherein the anti-rotation holes 31 are arranged at the tail part of the locking screw 3, all the anti-rotation holes 31 on the locking screw 3 are penetrated by steel wire ropes with the inner diameters smaller than the inner diameters of the anti-rotation holes 31, the two ends of each steel wire rope are screwed together, the thread size of the thread section 33 is matched with that of the thread hole B21, the locking screw 3 is screwed into the thread hole B21, the locking ends 33 are matched with the taper hole of the spindle, specifically, the locking ends 33 are conical, the taper hole is arranged at the position corresponding to the spindle, and the locking ends 33 are aligned to the taper hole of the spindle, so that the locking screw 3 is locked on the spindle;

the threaded holes B21 are distributed on the outer circumferential surface of the inner ring in a circumferential array.

When the clamping groove is positioned with the bearing position or the bearing seat, the bearing position or the bearing seat is provided with a groove position corresponding to the clamping groove position, and the clamping groove and the groove position are clamped by the clamping strip, so that the outer ring 1 is prevented from loosening;

the clamping grooves are distributed on the outer circumferential surface of the outer ring 1 in a circumferential array mode, the circumferential array is uniformly distributed in a set circular range, the bearing position is a recessed position used for mounting a bearing on a mechanical product, the bearing seat is an independent part for mounting the bearing, and the bearing seat is provided with a mounting hole and is locked on the mechanical product through the mounting hole.

Has the advantages that: the water-cooling locking bearing adopts the capillary principle to reduce the temperature of the bearing and the main shaft, the cooling water is less, the cooling efficiency is higher than that of the circulating water of the bearing seat, and simultaneously, the main shaft is cooled, the adopted locking screw 3 locks the main shaft, thereby reducing the interference fit value of the main shaft and the bearing, being beneficial to reducing the friction force of an inner ring and a ball or a roller, the clamping groove is utilized to clamp the outer ring 1, thereby reducing the interference fit value of the bearing seat or the bearing position and the bearing, being beneficial to reducing the friction force of the outer ring and the ball or the roller, thereby prolonging the service life of the bearing, reducing the difficulty of replacing the bearing, and being not.

Drawings

FIG. 1 is a schematic view of the overall structure of a water-cooled lock bearing;

FIG. 2 is a schematic view of the overall structure of the water-cooled lock bearing;

FIG. 3 is a schematic view of the structure of the bearing portion of the water-cooled lock bearing;

FIG. 4 is a schematic view of the structure of the bearing portion of the water-cooled lock bearing;

FIG. 5 is a schematic view of a cooler configuration;

fig. 6 is a schematic view of a locking screw structure.

Detailed Description

The applicant explains the structure and the working principle of the water-cooling lock bearing with reference to the attached drawings,

in the drawing, 1 is an outer ring, 11 is a threaded hole a, 2 is an inner ring, 21 is a threaded hole B, 3 is a locking screw, 31 is a rotation-preventing hole, 32 is a threaded section, 33 is a locking end, 4 is a cooler, 41 is a water-permeable hole, 42 is a straight hole, 43 is a water-absorbing cloth water inlet, 44 is an outer ring, 45 is an inner ring, 46 is a bottom surface, 5 is a cooler cover, 6 is a screw rod, 7 is a ball, and 8 is a dust cover.

The water-cooling locking bearing consists of a bearing, a cooler 4, a locking screw 3, a water tank and water absorption cloth,

the bearing comprises a structure of the existing bearing, and further comprises threaded holes A11, threaded holes B21 and clamping grooves, wherein the threaded holes A11 are distributed on one side end face of the outer ring 1 in a circumferential array, the threaded holes B21 are distributed on the outer circumferential face of the inner ring 2 in a circumferential array, the clamping grooves are distributed on the outer circumferential face of the outer ring 1 in a circumferential array, the circumferential array is uniformly distributed in a set circular range, when the bearing is positioned by using the clamping grooves and a bearing position or a bearing seat, the bearing position or the bearing seat is provided with the clamping grooves corresponding to the clamping groove positions, and the clamping grooves are clamped by using the clamping strips, so that the outer ring is prevented from loosening; the bearing position is a concave position for installing a bearing when a product is processed, the bearing seat is an independent part for installing the bearing, it is noted that the threaded hole A11 is used for locking the cooler 4 on the outer ring 1, the cooler 4 is not integrated with the outer ring 1, the cost is considered, the bearing steel is high-price steel, the cooler 4 is made of common steel products, the cooler 4 is difficult to process on the outer ring 1 of the bearing steel, the common steel is adopted, the sheet metal processing technology is utilized, the punching press is adopted, the cost of one cooler 4 is not more than one or two, and the cooler 4 is not installed and can be compatible with the existing bearing seat,

the cooler 4 is a concave annular chamber made of metal materials and comprises an outer ring 44, an inner ring 45, a bottom surface 46, a water-absorbing cloth water inlet 43, water-permeable holes 41 and straight holes 42, a cooler cover 5, a concave space formed by the outer ring 44, the inner ring 45 and the bottom surface 46 is a cooling chamber, the inner ring 45 is provided with N water-permeable holes 41, N is two or more, the water-absorbing cloth water inlet 43 is connected with a water tank, the water-absorbing cloth water inlet 43 is directly connected with the water tank, the water-absorbing cloth water inlet 43 penetrates through a bearing seat to be connected with the water tank or the water-absorbing cloth water inlet 43 is arranged on the bearing seat, water-absorbing cloth is arranged along the water tank-water-absorbing cloth water inlet 43-cooling chamber, so that cooling water in the water tank is guided into the cooling chamber by utilizing a capillary principle, the cooler cover 5 is used for covering the cooling chamber, thereby limiting the position of the,

the water permeable holes 41 are used for cooling the main shaft, so that the inner diameter of the inner ring 45 is larger than the diameter of the main shaft by 0.1mm to 0.5mm, the design aims to prevent the main shaft and the inner ring 45 from rubbing, and the water absorbing cloth can protrude out of the water permeable holes for a certain distance only by adopting certain force to press and install, so that the water absorbing cloth can be contacted with the main shaft, and cannot be wound with the main shaft due to the limitation of the inner ring,

the locking screws 3 are composed of anti-rotation holes 31, thread sections 32 and locking ends 33, all the anti-rotation holes 31 on the locking screws 3 are penetrated by steel wire ropes with the inner diameters smaller than the inner diameters of the anti-rotation holes 31, the two ends of the steel wire ropes are screwed together, the thread size of the thread section 32 is matched with that of a thread hole B21, the locking screws 3 are screwed into the thread holes B21, the locking ends 33 are conical, conical holes are formed in the positions corresponding to the main shaft, and the locking ends 33 are aligned to the conical holes of the main shaft, so that the locking screws 3 are locked on the main shaft;

the water-absorbing cloth is made of cotton and linen products with good water-absorbing performance, the main component of the cotton and linen products is cellulose, the burning point of the cellulose is 360 ℃, therefore, under normal conditions, the temperature of a main shaft is difficult to reach 360 ℃, the cellulose is a polymer of polyhydroxy aldehyde or polyhydroxy ketone, the polyhydroxy aldehyde or polyhydroxy ketone is a hydrophilic molecule, the water-absorbing performance of the water-absorbing cloth is better than that of an organic polymer, and the high-temperature resistance of the water-absorbing cloth is better than that of the organic polymer, therefore, the water-absorbing cloth is made of the cotton and linen products.

After the locking screw 3 and the clamping groove are adopted, the interference fit value of the main shaft and the inner ring can be reduced, in the case of the combination of a 6206 bearing and the main shaft, under the normal condition, the size of the main shaft needs to be 30.02mm to 30.03mm, after the locking screw is adopted, 30.005mm to 30.01 mm is in an ideal state, and even 30.00mm can be accepted, so that the bearing has better flexibility in rotation, and correspondingly, the outer ring and the bearing position have the same characteristics by utilizing the clamping groove.

It should be noted that, the utility model discloses an utilize the capillary principle, do not adopt the circulating water cooling principle, when adopting circulating water cooling, the circulating water pipeline has very big influence to the intensity of bearing frame, it is indirect cooling to adopt the circulating water, therefore, and capillary principle cooling is relatively, will reach same cooling effect, need more cooling water, and be the water that needs N times, to the water shortage occasion, probably just be difficult to have sufficient water cooling, to vibrations great machinery, still there is the not hard up problem of joint, and capillary principle then does not have above-mentioned shortcoming, and, the cooling water can not have extravagantly yet.

Claims

1. A water-cooling locking bearing is composed of a bearing, a cooler (4), a locking screw (3), a water tank and water absorption cloth,

the method is characterized in that: the basic structure of the water-cooling locking bearing is as follows:

1) the inner ring (2) is increased in width on the basis of the inner ring of the existing specification and model, a threaded hole B (21) is machined in the increased width area, and the threaded hole B (21) is used for installing a locking screw (3);

2) the outer ring (1) is provided with a threaded hole A (11), the threaded hole A (11) is used for installing the cooler (4), the cooler (4) and the threaded hole B (21) are designed to be separated from each other in position so as to prevent installation conflict, namely the threaded hole B (21) cannot be arranged in the inner area of the cooler (4);

3) the outer circumference of the outer ring (1) is provided with a clamping groove,

the water tank is a device for storing cooling water, the outlet of the water tank is connected with the water inlet (43) of the water-absorbing cloth, and the water-absorbing cloth is made of cotton and linen products with good water-absorbing performance.

2. The water-cooled lock bearing as set forth in claim 1, wherein:

the cooler (4) is a recessed annular chamber made of a metal material and comprises an outer ring (44), an inner ring (45), straight holes (42), a bottom surface (46) and a water absorbing cloth water inlet (43), the positions and the number of the straight holes (42) correspond to those of threaded holes A (11), so that the cooler (4) is locked on the outer ring (1) by using a screw rod, a recessed space formed by the outer ring (44), the inner ring (45) and the bottom surface (46) is a cooling chamber, N water permeable holes (41) are formed in the inner ring (45), and N is two or more;

the cooler cover (5) is used for covering the cooling chamber and preventing the water absorption cloth from scattering;

the threaded holes A (11) are distributed on the end face of one side of the outer ring (1) in a circumferential array.

3. The water-cooled lock bearing as set forth in claim 1, wherein:

the water inlet (43) of the water absorption cloth is directly connected with the water tank.

4. The water-cooled lock bearing as set forth in claim 1, wherein:

the water inlet (43) of the water absorbing cloth penetrates through the bearing seat to be connected with the water tank or the water inlet (43) of the water absorbing cloth is arranged on the bearing seat, and the water absorbing cloth is distributed along the water tank, the water inlet of the water absorbing cloth and the cooling chamber, so that cooling water in the water tank is guided into the cooling chamber by utilizing the capillary principle.

5. The water-cooled lock bearing as set forth in claim 1, wherein:

the locking screw (3) consists of an anti-rotation hole (31), a threaded section (32) and a locking end (33), the anti-rotation hole (31) is arranged at the tail part of the locking screw, the thread size of the threaded section (32) is matched with that of the threaded hole B (21), the locking screw (3) is matched with the threaded hole B (21) for installation, the locking end (33) is conical, a conical hole is formed in the position corresponding to the main shaft, and the locking end (33) is matched with the conical hole of the main shaft for installation;

the threaded holes B (21) are distributed on the outer circumferential surface of the inner ring (2) in a circumferential array.

6. The water-cooled lock bearing as set forth in claim 1, wherein:

when the clamping groove is positioned with the bearing position or the bearing seat, the bearing position or the bearing seat is provided with a groove position corresponding to the clamping groove position, and the clamping groove and the groove position are clamped by the clamping strip, so that the outer ring (1) is prevented from loosening;

the clamping grooves are distributed on the outer circumferential surface of the outer ring (1) in a circumferential array.