CN212360524U

CN212360524U - Spindle end supporting structure

Info

Publication number: CN212360524U
Application number: CN202020889772.6U
Authority: CN
Inventors: 王黎明
Original assignee: Huarui Logistics Co ltd
Current assignee: Huarui Logistics Co ltd
Priority date: 2020-05-23
Filing date: 2020-05-23
Publication date: 2021-01-15
Anticipated expiration: 2030-05-23

Abstract

The utility model discloses a main shaft tip bearing structure relates to axle head bearing structure's technical field. In the prior art, a large amount of heat is generated in the transmission process of a main shaft, when the heat is measured and transmitted to the main shaft, the influence of the expansion coefficient of a main shaft material is caused, and the bearings at two ends of the main shaft are extruded due to the change of the length of the main shaft, so that the abrasion of the bearings at the end part of the main shaft is aggravated. The main shaft comprises a fixed end connected with a power source and a movable end far away from one side of the fixed end, and when the length of the main shaft is influenced by temperature and changes, the movable end can be arranged with the second supporting seat in a sliding connection mode along the axis of the main shaft; a sleeve is arranged in the mounting hole of the second supporting seat and sleeved on the peripheral wall of the moving end. The scheme has the advantages that the problem of abrasion of the bearing at the end part of the main shaft due to the fact that the main shaft is affected by temperature is solved, and the service life of the supporting structure at the end part of the main shaft is prolonged.

Description

Spindle end supporting structure

Technical Field

The utility model belongs to the technical field of axle head bearing structure's technique and specifically relates to a main shaft tip bearing structure is related to.

Background

In some ships, heavy-duty automobiles or other large-scale transmission systems, main shaft transmission is a vital part of the transmission system, a plurality of gears or cranks are installed on the peripheral wall of a main shaft to realize linkage among various parts of the transmission system, but a large amount of heat can be generated in the transmission process of the main shaft, the length of the main shaft can be slightly changed due to the influence of the expansion coefficient of a main shaft material when the main shaft is measured and transmitted onto the main shaft, and bearings at two ends of the main shaft can be extruded to aggravate the abrasion of a bearing at the end part of the main shaft, so that the service life of a support structure at the end part of the main shaft is shortened.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a main shaft tip bearing structure, this scheme has the problem that reduces because the main shaft receives the temperature to influence and causes the wearing and tearing of main shaft tip bearing, improves main shaft tip bearing structure's life.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a main shaft tip bearing structure, includes the main shaft and installs respectively in the first supporting seat and the second supporting seat at main shaft both ends, its characterized in that: the main shaft comprises a fixed end connected with the power source and a movable end far away from one side of the fixed end, the fixed end is positioned on one side of the first supporting seat and is rotatably connected with the first supporting seat, and the movable end is positioned on one side of the second supporting seat and is rotatably connected with the second supporting seat; when the length of the main shaft is changed under the influence of temperature, the movable end can be connected with the second supporting seat in a sliding mode along the axis of the movable end; and a sleeve is coaxially arranged in the mounting hole of the second supporting seat and sleeved on the peripheral wall of the moving end.

Through adopting above-mentioned technical scheme, when the main shaft receives its length of temperature influence to take place little change, can be through removing the sleeve axial slip of establishing of end cover in the mounting hole of second supporting seat, and reduce the oppression to bearing or telescopic in first supporting seat and the second supporting seat when main shaft extension or shorten to improve main shaft tip bearing structure's life.

Further setting up, telescopic periphery wall and the internal perisporium interference fit of the mounting hole of second supporting seat, telescopic internal perisporium with the periphery wall sliding connection who removes the end sets up, telescopic inner wall is provided with sharp slider, sharp slider is including many setting up in the sharp spout of sleeve inner wall, many sharp spout interval sets up and all is on a parallel with telescopic axis, sharp slider is still including a plurality of first balls, and is a plurality of first ball arranges in many in the sharp spout, it is a plurality of first ball all with the perisporium butt that removes the end.

Through adopting above-mentioned technical scheme, set up sharp slider for the removal end of main shaft receives the influence of temperature when sliding along the axial, can drive the removal of main shaft removal end through the roll of the first ball in the sharp spout, thereby friction when reducing the main shaft and removing, and then the telescopic life of extension.

The sleeve is characterized in that a circumferential sliding piece is arranged on the inner wall of the sleeve, the circumferential sliding piece comprises a plurality of annular circumferential sliding grooves formed in the inner wall of the sleeve, the axis of each circumferential sliding groove is overlapped with the axis of the sleeve, the circumferential sliding piece further comprises a plurality of second balls, the second balls are arranged in the plurality of circumferential sliding grooves, and the second balls are abutted to the circumferential wall of the moving end.

Through adopting above-mentioned technical scheme, can make the main shaft more smooth and easy when rotating around its axis through setting up circumference slider, further improve telescopic life.

And a flange which is flanged outwards is arranged on one side of the sleeve, extends out of the mounting hole of the second support seat and is abutted against the side wall of the second support seat.

Through adopting above-mentioned technical scheme, when the sleeve installation, can hug closely at the lateral wall of second supporting seat and with the second supporting seat through the flange card to realize telescopic location, and then make things convenient for operating personnel to install the sleeve.

The flange is further provided with a plurality of pairs of ejection holes penetrating through the surface of the flange, each pair of ejection holes is arranged symmetrically relative to the center of the circle of the flange, and the peripheral walls of the plurality of pairs of ejection holes are provided with threads.

Through adopting above-mentioned technical scheme, when operating personnel need dismantle the sleeve, can make flange and second supporting seat break away from through in to the ejector pin with the bolt screw in at most, slow rotatory bolt to the realization is extracted the purpose of the installing port of second supporting seat with the sleeve, thereby the aspect operating personnel is to telescopic dismantlement work.

The sleeve is provided with an oil injection pipe, one end of the oil injection pipe is communicated with the circumferential sliding grooves, and the other end of the oil injection pipe is communicated to the outside of the flange.

Through adopting above-mentioned technical scheme, lubricate the sleeve as required to when reducing the wearing and tearing that sleeve and main shaft removed the end, can pour into lubricating oil into straight line spout and circumference spout in through annotating oil pipe, in order to realize the lubrication of sleeve and removal end.

Further setting, the flange deviates from the coaxial sealing ring that is provided with of one side of telescopic, the internal perisporium of sealing ring is provided with the elasticity sealing washer, the elasticity sealing washer sets up with the perisporium butt of removing the end.

Through adopting above-mentioned technical scheme, set up sealing ring and elastic sealing washer and can be so that the interior lubricating oil of sleeve is difficult for spilling, avoid external miscellaneous dirty entering into sleeve inside simultaneously to improve telescopic life.

Further, a crossed roller bearing is coaxially arranged between the fixed end and the mounting opening of the first supporting seat.

By adopting the technical scheme, the crossed roller bearing can bear loads in all directions, has higher rigidity compared with the traditional bearing, and is suitable for high-precision rotary motion, so that the supporting structure at the end part of the main shaft can meet the use working conditions of all angles in space.

Further arranging, a blank cap used for sealing a mounting port of the second supporting seat is mounted on the side wall, close to the moving end, of the second supporting seat; the lateral wall that first supporting seat is close to stiff end one side is provided with and is used for sealing first supporting seat installing port pass through the lid, the stiff end passes through to cover and is connected with external power supply.

Through adopting above-mentioned technical scheme, set up stifle and pass through the lid and can prevent that external impurity from entering into the junction of removal end and stiff end to main shaft tip bearing structure's life has been improved.

To sum up, the utility model discloses a following at least one useful technological effect:

1. in the scheme, the sleeve, the linear sliding piece and the circumferential sliding piece are arranged, so that the moving end of the main shaft can move along the axis of the main shaft and can rotate around the axis of the main shaft, the abrasion of the joint of the moving end of the main shaft is reduced, and the service life of the supporting structure at the end part of the main shaft is prolonged;

2. in the scheme, the arrangement of the flange and the ejection hole can facilitate the installation and the disassembly of the sleeve by operators;

3. in the scheme, the linear sliding groove, the circumferential sliding groove and the oil injection pipe are communicated with each other, so that an operator can inject lubricating oil into the linear sliding groove and the circumferential sliding groove through the oil injection pipe to lubricate the sleeve and the moving end;

4. in this scheme, the setting of cross roller bearing can make the stiff end of main shaft bear the load of all directions to main shaft tip bearing structure can satisfy the operating mode of each angle in the space.

Drawings

Fig. 1 is a schematic view of an installation structure according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

fig. 3 is a schematic view of the internal structure of the sleeve of fig. 2.

In the figure, 1, main shaft; 2. a first support base; 3. a second support seat; 4. a fixed end; 5. a mobile terminal; 6. a sleeve; 7. a linear slider; 8. a linear chute; 9. a first ball bearing; 10. a circumferential sliding member; 11. a circumferential chute; 12. a second ball bearing; 13. an oil filling pipe; 14. a seal ring; 15. an elastic sealing ring; 16. covering the blank with a cover; 17. a transparent cover; 18. a crossed roller bearing; 19. a flange; 20. and ejecting the hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

as shown in fig. 1 and 2, for the utility model discloses a spindle end supporting structure, including a spindle 1 and a first supporting seat 2 and a second supporting seat 3 respectively installed at two ends of the spindle 1, the spindle 1 includes a fixed end 4 connected with a power source (not shown in the figure) and a movable end 5 far away from one side of the fixed end 4, the power source can be a motor or an engine, the fixed end 4 is located at one side of the first supporting seat 2 and is rotatably connected with the first supporting seat 2, the movable end 5 is located at one side of the second supporting seat 3 and is rotatably connected with the second supporting seat 3; coaxially in the mounting hole of second supporting seat 3 be provided with sleeve 6, the internal perisporium interference fit of the mounting hole of the periphery wall of sleeve 6 and second supporting seat 3, and the internal perisporium of sleeve 6 sets up with the periphery wall sliding connection who removes end 5, removes end 5 promptly and can enough rotate around its axis and sleeve 6 and be connected the setting, can follow its axis again and sleeve 6 sliding connection setting. When the length of the main shaft 1 is slightly changed under the influence of temperature, the sleeve 6 sleeved by the movable end 5 can axially slide in the mounting hole of the second support seat 3, so that the compression on the bearing or the sleeve 6 in the first support seat 2 and the second support seat 3 when the main shaft 1 extends or shortens is reduced, and the service life of the supporting structure at the end part of the main shaft is prolonged.

In order to reduce sleeve 6 and the wearing and tearing of removal end 5, be provided with linear sliding part 7 at sleeve 6's inner wall, linear sliding part 7 is including many setting up in the straight line spout 8 of sleeve 6 inner wall, 8 intervals of many straight line spouts set up and all be on a parallel with sleeve 6's axis, linear sliding part 7 is still including a plurality of first balls 9, a plurality of first balls 9 card are located in many straight line spouts 8, a plurality of first balls 9 all with the perisporium butt of removal end 5. Thereby can make the removal end 5 of main shaft 1 receive the influence of temperature when sliding along the axial, can drive the removal of main shaft 1 removal end 5 through the roll of the first ball 9 in the straight line spout 8 to friction when reducing main shaft 1 and removing, and then the life of extension sleeve 6. The inner wall of sleeve 6 is provided with circumference slider 10, circumference slider 10 is including many annular circumference spouts 11 that set up in the inner wall of sleeve 6, the axis of a plurality of circumference spouts 11 and the coincidence of the axis of sleeve 6, this embodiment is provided with two circumference spouts 11 and arranges in the both ends of sharp spout 8, circumference slider 10 is still including a plurality of second balls 12, a plurality of second balls 12 card are located in a plurality of circumference spouts 11, a plurality of second balls 12 all with the perisporium butt of removal end 5. The circumferential sliding piece 10 can enable the spindle 1 to rotate around the axis of the spindle more smoothly, and the service life of the sleeve 6 is further prolonged.

As shown in fig. 3, in order to lubricate the moving end 5 and the sleeve 6 of the main shaft 1, the plurality of linear chutes 8 are communicated with the plurality of circumferential chutes 11, an oil injection pipe 13 is arranged in the sleeve 6, one end of the oil injection pipe 13 is communicated with the circumferential chutes 11, the other end of the oil injection pipe is communicated to the outside of the flange 19 and is connected with an oil injection head (not shown in the figure), when the sleeve 6 needs to be lubricated, so as to reduce the abrasion of the moving end 5 of the sleeve 6 and the main shaft 1, lubricating oil can be injected into the linear chutes 8 and the circumferential chutes 11 through the oil injection pipe 13, so as to lubricate the sleeve 6 and.

As shown in fig. 1 and 2, in order to enhance the sealing performance of the joint between the moving end 5 and the fixed end 4 of the spindle 1, a sealing ring 14 is coaxially disposed on the side of the flange 19 away from the sleeve 6, an elastic sealing ring 15 made of rubber is disposed on the inner circumferential wall of the sealing ring 14, and the elastic sealing ring 15 is disposed in contact with the circumferential wall of the moving end 5. The sealing ring 14 and the elastic sealing ring are arranged, so that lubricating oil in the sleeve 6 is not easy to leak, and meanwhile, outside impurities are prevented from entering the sleeve 6, and the service life of the sleeve 6 is prolonged. A blank cap 16 used for sealing the mounting port of the second support seat 3 is arranged on the side wall of the second support seat 3 close to the moving end 5, and the blank cap 16 is connected with the second support seat 3 through a bolt; the lateral wall that first supporting seat 2 is close to 4 one sides of stiff end is provided with and is used for sealing through lid 17 of 2 installing ports of first supporting seat, pass through lid 17 and be connected with first supporting seat 2 through the bolt, the one end of the stiff end 4 of main shaft 1 is passed through lid 17 and is connected with external power supply. The arrangement of the blank cap 16 and the transparent cap 17 can prevent external impurities from entering the joint of the movable end 5 and the fixed end 4, thereby prolonging the service life of the supporting structure at the end part of the spindle.

A crossed roller bearing 18 is coaxially arranged between the fixed end 4 and the mounting opening of the first supporting seat 2. Because the crossed roller bearing 18 can bear loads in all directions, compared with the traditional bearing, the crossed roller bearing has higher rigidity and is suitable for high-precision rotary motion, and therefore the supporting structure at the end part of the main shaft 1 can meet the use working conditions of all angles in space.

One side of the sleeve 6 is provided with a flange 19 which is flanged outwards, and the flange 19 extends out of the mounting hole of the second support seat 3 and is abutted against the side wall of the second support seat 3. When the sleeve 6 is installed, the flange 19 can be clamped on the side wall of the second supporting seat 3 and tightly attached to the second supporting seat 3, so that the sleeve 6 can be positioned, and an operator can conveniently install the sleeve 6. A plurality of pairs of ejection holes 20 penetrate through the surface of the flange 19, each pair of ejection holes 20 is arranged symmetrically with respect to the center of the circle of the flange 19, the peripheral walls of the plurality of pairs of ejection holes 20 are provided with threads, and the present embodiment is arranged in two pairs of ejection holes 20, namely four ejection holes 20, and are uniformly arranged along the axis of the flange 19. When an operator needs to disassemble the sleeve 6, the bolt can be screwed into the ejecting holes 20, and the bolt is slowly rotated to separate the flange 19 from the second support seat 3, so that the sleeve 6 can be pulled out of the mounting hole of the second support seat 3, and the operator can disassemble the sleeve 6.

The implementation principle of the embodiment is as follows: when the main shaft 1 extends or shortens under the influence of temperature, because the fixed end 4 of the main shaft 1 is connected with the first support seat 2 through the crossed roller bearing 18, so that the main shaft 1 cannot move axially relative to the first support seat 2, the movable end 5 of the main shaft 1 can extend or shorten along the axial direction in the second support seat 3 under the influence of the expansion coefficient of the main shaft 1; the sleeve 6 is sleeved on the movable end 5 in a sliding mode along the axis direction of the movable end, so that the movable end 5 can be assisted to move in the second supporting seat 3, and compared with a traditional mode of installing a bearing at the position of the movable end 5, the abrasion of the sliding of the movable end 5 of the main shaft 1 on the bearing is avoided; meanwhile, as the sleeve 6 is internally provided with the linear sliding piece 7 and the circumferential sliding piece 10, the friction loss between the moving end 5 of the main shaft 1 and the sleeve 6 can be reduced, and the service life of the sleeve 6 is prolonged; meanwhile, due to the arrangement of the sealing ring 14, the transparent cover 17 and the blank cap 16, the problem that the joint of the main shaft 1 is dirty can be avoided, and the service life of the end part supporting structure of the main shaft 1 is further prolonged.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a main shaft tip bearing structure, includes main shaft (1) and installs respectively in first supporting seat (2) and second supporting seat (3) at main shaft (1) both ends, its characterized in that: the main shaft (1) comprises a fixed end (4) connected with a power source and a movable end (5) far away from one side of the fixed end (4), the fixed end (4) is positioned on one side of the first supporting seat (2) and is rotatably connected with the first supporting seat (2), and the movable end (5) is positioned on one side of the second supporting seat (3) and is rotatably connected with the second supporting seat (3); when the length of the main shaft (1) is changed under the influence of temperature, the movable end (5) can be arranged along the axis of the main shaft in a sliding connection mode with the second supporting seat (3); a sleeve (6) is coaxially arranged in the mounting hole of the second supporting seat (3), and the sleeve (6) is sleeved on the peripheral wall of the moving end (5).

2. A spindle end support structure according to claim 1, wherein: the inside perisporium interference fit of the mounting hole of the periphery wall of sleeve (6) and second supporting seat (3), the inside perisporium of sleeve (6) with the periphery wall sliding connection who removes end (5) sets up, the inner wall of sleeve (6) is provided with sharp slider (7), sharp slider (7) are including many sharp spout (8) that set up in sleeve (6) inner wall, many sharp spout (8) interval sets up and all is on a parallel with the axis of sleeve (6), sharp slider (7) are still including a plurality of first ball (9), and are a plurality of first ball (9) are arranged in many in sharp spout (8), a plurality of first ball (9) all with the perisporium butt that removes end (5).

3. A spindle end support structure according to claim 2, wherein: the inner wall of sleeve (6) is provided with circumference slider (10), circumference slider (10) are including many annular circumference spout (11) that set up in sleeve (6) inner wall, and are a plurality of the axis of circumference spout (11) and the axis coincidence of sleeve (6), circumference slider (10) are still including a plurality of second ball (12), and are a plurality of second ball (12) arrange in many in circumference spout (11), a plurality of second ball (12) all with the perisporium butt of removal end (5).

4. A spindle end support structure according to claim 3, wherein: one side of the sleeve (6) is provided with a flange (19) which is flanged outwards, and the flange (19) extends out of the mounting hole of the second supporting seat (3) and is abutted against the side wall of the second supporting seat (3).

5. A spindle end support structure according to claim 4, wherein: the surface of the flange (19) penetrates through a plurality of pairs of ejection holes (20), each pair of ejection holes (20) is arranged in a manner of being symmetrical about the center of the circle of the flange (19), and the peripheral walls of the plurality of pairs of ejection holes (20) are provided with threads.

6. A spindle end support structure according to claim 4, wherein: many straight line spout (8) and many circumference spout (11) communicate each other, be provided with in sleeve (6) annotate oil pipe (13), annotate oil pipe (13) one end and circumference spout (11) intercommunication, the other end communicates to flange (19) outside.

7. A spindle end support structure according to claim 4, wherein: the flange (19) deviates from one side coaxial sealing ring (14) of sleeve (6), the internal perisporium of sealing ring (14) is provided with elasticity sealing washer (15), elasticity sealing washer (15) and the perisporium butt setting of removal end (5).

8. A spindle end support structure according to claim 1, wherein: and a crossed roller bearing (18) is coaxially arranged between the fixed end (4) and the mounting opening of the first supporting seat (2).

9. A spindle end support structure according to claim 1, wherein: a blank cap (16) used for sealing the mounting port of the second support seat (3) is mounted on the side wall of the second support seat (3) close to the moving end (5); first supporting seat (2) are provided with near the lateral wall of stiff end (4) one side and are used for sealing first supporting seat (2) installing port pass through lid (17), stiff end (4) pass through lid (17) and are connected with external power supply.