CN212928500U

CN212928500U - Bearing for power cylinder

Info

Publication number: CN212928500U
Application number: CN202021409957.9U
Authority: CN
Inventors: 卫文忠
Original assignee: Beijing Sanlaite Electromechanical Equipment Co Ltd
Current assignee: Beijing Sanlaite Electromechanical Equipment Co Ltd
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-04-09
Anticipated expiration: 2030-07-16

Abstract

The utility model relates to a bearing for power cylinder, it includes the outer lane, set up in the outer lane inside and with the inner circle of the coaxial setting of outer lane, set up at the sealing washer of outer lane and inner circle both sides, set up the recess on outer lane and inner circle relative lateral wall, establish a plurality of balls and the cover on the ball in the recess between outer lane and inner circle, outer caulking groove has all been seted up to the both sides of outer lane, the inner caulking groove has all been seted up to the both sides of inner circle, outer caulking groove and inner caulking groove mutually support to form the seal groove that is used for installing the sealing washer, the sealing washer is including inlaying the sealed pad of establishing in the seal groove, the parcel has the metal sheet that is used for supporting sealed pad in the sealed pad, the cross-section of. This application has the life who improves the bearing, reduces the change number of times's of sealing washer effect.

Description

Bearing for power cylinder

Technical Field

The application relates to the field of power cylinder using equipment, in particular to a bearing for a power cylinder.

Background

Since the pressing force of the clutch of the dump truck is relatively large, a clutch booster, namely a clutch boosting cylinder and a boosting pump, is usually used for reducing the force of a driver for stepping on a clutch pedal. The bearing for the power cylinder is used for determining the relative movement position of the rotating shaft and other parts and is used for supporting or guiding the parts. According to the different friction properties of moving elements, bearings can be divided into rolling bearings and sliding bearings.

Antifriction bearing generally includes the outer lane, the inner circle and is located the rolling element between inner circle and the outer lane, and inside in order to prevent the leak-out of emollient and outside dust, moisture and foreign matter invasion bearing in the bearing position now, current bearing generally all has the sealing washer, and current bearing seal design structure has some defects, and easy deformation leads to the leakproofness variation under long-time pressure, and then influences life, and the periodic replacement sealing washer has also caused the waste of time and the increase of cost.

SUMMERY OF THE UTILITY MODEL

In order to improve the life of bearing, reduce the change number of times of sealing washer, this application provides a bearing for helping hand jar.

The application provides a bearing for helping hand cylinder adopts following technical scheme:

the utility model provides a bearing for power cylinder, includes the outer lane, set up in the outer lane inside and with the inner circle of the coaxial setting of outer lane, set up at the sealing washer of outer lane and inner circle both sides, set up the recess on outer lane and inner circle relative lateral wall, establish a plurality of balls and the cover at the ball between outer lane and inner circle in the recess, the outer caulking groove has all been seted up to the both sides of outer lane, the inner caulking groove has all been seted up to the both sides of inner circle, outer caulking groove and inner caulking groove mutually support and form the seal groove that is used for installing the sealing washer, the sealing washer is including inlaying the sealed pad of establishing in the seal groove, the parcel has the metal sheet that is used for supporting sealed pad in sealed pad, the cross-.

By adopting the technical scheme, the sealing grooves are respectively arranged on the two sides of the outer ring and the inner ring, the sealing gaskets are embedded in the sealing grooves, and further, the gap between the inner ring and the outer ring of the bearing is completely sealed, so that the leakage of a lubricant in the bearing part and the intrusion of external dust, moisture and foreign matters into the bearing part are effectively reduced, and the sealing property is improved; meanwhile, the metal plate for supporting the sealing gasket is wrapped in the sealing gasket, so that the toughness and the strength of the whole sealing gasket are higher, the sealing gasket can bear larger pressure, the service life of the sealing gasket is further prolonged, and the replacement frequency of the sealing gasket is reduced; the cross-section of metal sheet sets up for the U-shaped, and then makes sealed both ends of filling up sealed respectively with the lateral wall of outer lane and inner circle sealed inseparabler to promote the sealed effect of sealing washer.

Preferably, the sealing gasket is made of silicone rubber.

By adopting the technical scheme, the silicon rubber material has better weather resistance, oil resistance and heat resistance, and can greatly improve the service temperature of the bearing.

Preferably, a first clamping groove is formed in the outer ring and is located in the outer embedding groove; a second clamping groove is formed in the inner ring and is positioned in the embedded groove; two ends of the sealing gasket are respectively embedded in the first clamping groove and the second clamping groove.

Through adopting above-mentioned technical scheme, sealed both ends of filling up inlay respectively and establish in first draw-in groove and second draw-in groove for realize the joint between sealed pad and outer lane and the inner circle, reduce the possibility of sealed pad slippage seal groove, make the sealing performance of sealed pad better.

Preferably, the outer side parallel arrangement that sealed pad deviates from the steel ball has the gasket, the gasket inlays to be established in the seal groove, the gasket both sides lean on each other with the lateral wall of outer lane and inner circle respectively, the outside of gasket is provided with the seal assembly who is used for sealing the seal groove.

By adopting the technical scheme, after the sealing gasket is embedded in the sealing groove, the gasket is attached to the outer side wall of the sealing gasket, which is far away from the ball, and then the gasket is tightly attached to the outer side wall of the gasket, which is far away from the sealing gasket, through the sealing assembly; the gasket can further improve the overall strength of the sealing gasket and enhance the sealing performance of the sealing gasket; the gasket and the sealing assembly are mutually matched, so that the erosion of external dust, moisture and foreign matters to the sealing ring can be reduced, and the service life of the sealing ring is prolonged.

Preferably, seal assembly closes the buckle on the seal groove including the lid, the cross section of buckle is greater than the size of seal groove, offer the screens groove that is used for installing the buckle on the lateral wall of outer lane, the buckle has seted up the groove of stepping down on the lateral wall in screens groove, the both sides of buckle respectively with the lateral wall counterbalance of outer lane and inner circle lean on.

By adopting the technical scheme, when the retaining ring is arranged on the sealing groove, the abdicating groove and the clamping groove are attached to each other, so that the outer side of the retaining ring is flush with the side walls of the outer ring and the inner ring; due to the arrangement of the retaining ring, the sealing performance of the bearing is further improved, the influence of external factors on the bearing is further reduced, and therefore the service life of the bearing and the service life of the sealing ring are prolonged.

Preferably, both sides of the inner ring are provided with arc chamfers.

By adopting the technical scheme, the installation of the shaft is convenient, and the friction between the edge of the inner ring and the shaft is reduced, so that the service life of the bearing is prolonged, and meanwhile, the safety protection of operators can be realized during the installation.

Preferably, the retainer consists of at least two pocket seats, each pocket seat is of a circular tubular structure, one end of each pocket seat, which is in contact with the balls, is axially grooved along the annular axial line of the pocket seat, and two annular groove ends in contact with the balls are formed.

By adopting the technical scheme, the retainer is in a circular tubular shape and is axially grooved at one end in contact with the balls, so that the contact between the retainer and the balls is changed from surface contact to linear contact, the contact area is reduced, and the friction resistance is greatly reduced; the tubular pocket seat with the tubular grooves and the balls form a closed cavity, lubricating oil can be well kept in the closed cavity, the lubricating effect is greatly improved, and the friction resistance is reduced.

Preferably, the top of the end of the annular groove, which is contacted with the ball, of the pocket seat is hemispherical.

Through adopting above-mentioned technical scheme, the cyclic annular groove end top of pocket seat and ball contact is the hemisphere for the contact resistance of pocket seat and ball further reduces.

To sum up, the application comprises the following beneficial technical effects:

1. the gap between the inner ring and the outer ring of the bearing is completely sealed by the sealing ring, so that the leakage of lubricant in the bearing part and the invasion of external dust, moisture and foreign matters into the bearing are effectively reduced, and the sealing property is improved; meanwhile, the metal plate for supporting the sealing gasket is wrapped in the sealing gasket, so that the toughness and the strength of the whole sealing gasket are higher, the sealing gasket can bear larger pressure, the service life of the sealing gasket is further prolonged, and the replacement frequency of the sealing gasket is reduced; the section of the metal plate is arranged in a U shape, so that two ends of the sealing gasket are respectively sealed with the side walls of the outer ring and the inner ring more tightly, and the sealing effect of the sealing ring is improved;

2. the gasket and the sealing assembly are matched with each other, so that the sealing ring can not be protected, multiple sealing of the bearing can be realized, the sealing effect between the inner ring and the outer ring of the bearing is greatly enhanced, the working efficiency of the bearing is improved, and the service life of the bearing is prolonged;

3. the retainer is in a circular tubular shape and is axially grooved at one end in contact with the balls, so that the contact between the retainer and the balls is changed from surface contact to linear contact, the contact area is reduced, and the friction resistance is greatly reduced; the tubular pocket seat with the tubular grooves and the balls form a closed cavity, lubricating oil can be well kept in the closed cavity, the lubricating effect is greatly improved, and the friction resistance is reduced.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a sectional view of an internal structure embodying an embodiment of the present application.

In the figure, 1, outer ring; 11. an external caulking groove; 111. a first card slot; 12. a clamping groove; 2. an inner ring; 21. an embedded groove is formed; 211. a second card slot; 3. a seal ring; 31. a gasket; 32. a metal plate; 4. a groove; 5. a ball bearing; 6. a holder; 61. a pocket seat; 611. an annular slot end; 7. a sealing groove; 8. a gasket; 9. a seal assembly; 91. a retaining ring; 911. a yielding groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses bearing for helping hand cylinder. Referring to fig. 1 and 2, a bearing for a cylinder includes an outer ring 1, an inner ring 2 disposed inside the outer ring 1 and coaxial with the outer ring 1, sealing rings 3 disposed on both sides of the outer ring 1 and the inner ring 2, grooves 4 formed on opposite sidewalls of the outer ring 1 and the inner ring 2, a plurality of balls 5 disposed in the grooves 4 between the outer ring 1 and the inner ring 2, and a retainer 6 fitted over the balls 5.

Referring to fig. 1 and 2, the outer caulking groove 11 is formed on both sides of the outer ring 1, the inner caulking groove 21 is formed on both sides of the inner ring 2, the outer caulking groove 11 and the inner caulking groove 21 are oppositely arranged, and the outer caulking groove 11 and the inner caulking groove 21 are mutually matched to form the sealing groove 7 which has a U-shaped cross section and is used for mounting the sealing ring 3. Circular arc chamfers are arranged on two sides of the inner ring 2, so that the shaft can be conveniently installed, the friction between the edge of the inner ring 2 and the shaft is reduced, the service life of the bearing is prolonged, and meanwhile, the safety protection of operators can be realized during installation.

Referring to fig. 1 and 2, the sealing ring 3 includes a sealing gasket 31 embedded in the sealing groove 7, the sealing gasket 31 is made of a silicon rubber material, and the silicon rubber material has good weather resistance, oil resistance and heat resistance, and can greatly increase the service temperature of the bearing; the parcel has the metal sheet 32 that is used for supporting sealed pad 31 in sealed 31, and the cross-section of metal sheet 32 is the U-shaped setting, and the opening of metal sheet 32 sets up towards ball 5, and metal sheet 32 makes sealed pad 31's holistic toughness and intensity higher to make sealed pad 31 can bear great pressure, and then prolong sealed pad 31's life, thereby reduce sealing washer 3's change number of times. A first clamping groove 111 is formed in the outer ring 1, and the first clamping groove 111 is located at an inner angle of the outer embedding groove 11; a second clamping groove 211 is formed in the inner ring 2, and the second clamping groove 211 is located at the inner angle of the embedded groove 21; the both ends of sealed pad 31 are inlayed respectively and are established in first draw-in groove 111 and second draw-in groove 211 for realize the joint between sealed pad 31 and outer lane 1 and the inner circle 2, reduce the possibility of sealed pad 31 slippage seal groove 7, thereby make sealed pad 31's sealing performance better.

Referring to fig. 1 and 2, a gasket 8 is arranged in parallel on the outer side of the sealing gasket 31 away from the steel ball, the gasket 8 is embedded in the sealing groove 7, and the upper side and the lower side of the gasket 8 are respectively attached to the side walls of the outer ring 1 and the inner ring 2, so that the overall strength of the sealing gasket 31 is further improved, and the sealing performance of the sealing gasket 31 is enhanced; the outside of the gasket 8 is provided with a seal assembly 9 for sealing the seal groove 7. The sealing assembly 9 comprises a snap ring 91 covered on the sealing groove 7, the cross section of the snap ring 91 is larger than the size of the sealing groove 7, a clamping groove 12 used for mounting the snap ring 91 is formed in the side wall of the outer ring 1, and a yielding groove 911 is formed in the side wall of the snap ring 91 facing the clamping groove 12; when the retaining ring 91 is installed on the sealing groove 7, the two opposite sides of the retaining ring 91 are respectively abutted against the side walls of the outer ring 1 and the inner ring 2, the side wall of the retaining ring 91 facing the ball 5 is abutted against the side wall of the gasket 8, the side wall of the retaining ring 91 facing away from the ball 5 is flush with the side wall of the outer ring 1 or the side wall of the inner ring 2, and the retaining ring 91 is connected with the side wall of the outer ring 1 through a plurality of rivets (not shown in the figure).

Referring to fig. 1 and 2, the cage 6 is composed of at least two pockets 61, and the number of pockets 61 corresponds to the number of balls 5 one by one in this embodiment; the pocket seat 61 is of a circular ring tubular structure, one end, in contact with the balls 5, of the pocket seat 61 is axially grooved along the annular axis of the pocket seat 61 and forms two annular groove ends 611 in contact with the balls 5, and the tops of the annular groove ends 611 in contact with the balls 5 and the pocket seat 61 are arranged in a hemispherical shape, so that the contact resistance of the pocket seat 61 and the balls 5 is further reduced; the contact surface of the pocket seat 61 and the ball 5 forms a closed cavity which can well store lubricating liquid and keep the ball 5 lubricated. The pocket 61 changes the contact between the cage 6 and the balls 5 from surface contact to line contact, reducing the contact area and greatly reducing the frictional resistance.

The implementation principle of the bearing for the power cylinder in the embodiment of the application is as follows: the sealing grooves 7 are respectively arranged on two sides of the outer ring 1 and the inner ring 2, the sealing gasket 31, the gasket 8 and the retaining ring 91 are sequentially embedded in the sealing grooves 7, multiple sealing of a bearing gap is realized, and further, a gap between the inner ring 2 and the outer ring 1 of the bearing is completely sealed, so that leakage of a lubricant in the bearing part and intrusion of external dust, moisture and foreign matters into the bearing are effectively reduced, and the sealing property is improved; meanwhile, the metal plate 32 for supporting the sealing gasket 31 is wrapped in the sealing gasket 31, so that the overall toughness and strength of the sealing gasket 31 are higher, the sealing gasket 31 can bear higher pressure, the service life of the sealing gasket 31 is prolonged, and the replacement frequency of the sealing ring 3 is reduced; the section of the metal plate 32 is in a U-shaped arrangement, so that two ends of the sealing gasket 31 are respectively sealed with the side walls of the outer ring 1 and the inner ring 2 more tightly, and the sealing effect of the sealing ring 3 is improved;

the retainer 6 is in a circular tubular shape and is axially grooved at one end in contact with the balls 5, so that the contact between the retainer 6 and the balls 5 is changed from surface contact to linear contact, the contact area is reduced, and the friction resistance is greatly reduced; the tubular pocket seat 61 with the tubular grooves and the balls 5 form a closed cavity, lubricating oil can be well kept in the closed cavity, the lubricating effect is greatly improved, the friction resistance is reduced, and therefore the service life of the bearing is prolonged.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a bearing for helping hand jar, including outer lane (1), set up in outer lane (1) inside and with inner circle (2) of outer lane (1) coaxial setting, set up sealing washer (3) in outer lane (1) and inner circle (2) both sides, set up recess (4) on outer lane (1) and inner circle (2) relative lateral wall, establish a plurality of balls (5) and the cover in recess (4) between outer lane (1) and inner circle (2) and go up holder (6) on ball (5), its characterized in that: outer caulking groove (11) have all been seted up to the both sides of outer lane (1), interior caulking groove (21) have all been seted up to the both sides of inner circle (2), outer caulking groove (11) and embedded groove (21) mutually support and form seal groove (7) for installing sealing washer (3), sealing washer (3) are including inlaying sealed pad (31) of establishing in seal groove (7), the parcel has metal sheet (32) for supporting sealed pad (31) in sealed pad (31), the cross-section of metal sheet (32) is the setting of U-shaped.

2. A bearing for a cylinder block as set forth in claim 1, wherein: the sealing gasket (31) is made of a silicon rubber gasket material.

3. A bearing for a cylinder block as set forth in claim 1, wherein: a first clamping groove (111) is formed in the outer ring (1), and the first clamping groove (111) is located in the outer embedding groove (11); a second clamping groove (211) is formed in the inner ring (2), and the second clamping groove (211) is located in the embedded groove (21); two ends of the sealing gasket (31) are respectively embedded in the first clamping groove (111) and the second clamping groove (211).

4. A bearing for a cylinder block as set forth in claim 3, wherein: the outside parallel arrangement that sealed pad (31) deviates from the steel ball has gasket (8), gasket (8) inlay and establish in seal groove (7), gasket (8) both sides paste with the lateral wall of outer lane (1) and inner circle (2) respectively and lean on each other, the outside of gasket (8) is provided with seal assembly (9) for sealing seal groove (7).

5. The bearing for a cylinder block as set forth in claim 4, wherein: seal assembly (9) close buckle (91) on seal groove (7) including the lid, the cross section of buckle (91) is greater than the size of seal groove (7), offer on the lateral wall of outer lane (1) and be used for installing buckle (91) screens groove (12), buckle (91) have been seted up and have been stepped down groove (911) on the lateral wall of screens groove (12), the both sides of buckle (91) lean on with the lateral wall counterbalance of outer lane (1) and inner circle (2) respectively.

6. A bearing for a cylinder block as set forth in claim 1, wherein: arc chamfers are arranged on two sides of the inner ring (2).

7. A bearing for a cylinder block as set forth in claim 1, wherein: the retainer (6) is composed of at least two pocket seats (61), each pocket seat (61) is of a circular-ring tubular structure, one end, in contact with the balls (5), of each pocket seat is axially grooved along the annular axis of each pocket seat (61) and forms two annular groove ends (611) in contact with the balls (5).

8. A bearing for a cylinder block as set forth in claim 7, wherein: the top of the annular groove end (611) of the pocket seat (61) contacted with the ball (5) is hemispherical.