CN221401586U - Shock-resistant gear box body structure - Google Patents

Abstract

The utility model discloses an anti-vibration gearbox box body structure, which comprises a box body, wherein a bearing installation part for an input shaft or an output shaft to penetrate into an inner cavity of the box body is arranged on the box body, a first limit flange and a second limit flange which are axially arranged along the input shaft or the output shaft are installed on the bearing installation part, a bearing is installed between the first limit flange and the second limit flange, a shock pad is arranged on the peripheral wall of an outer ring of the bearing, side walls of two sides of the bearing are respectively abutted with the first limit flange and the second limit flange, an installation ring groove is arranged on the side wall of the bearing installation part, shock absorbing ribs which are radially arranged are arranged on the outer wall of the shock pad are inserted into the installation ring groove, the side walls of the shock absorbing ribs are abutted with the side walls of the installation ring groove, the shock absorbing ribs are utilized to absorb shock of the bearing which is axially transmitted, and shock energy of the shock is weakened on a shock transmission path of the shock so that the anti-vibration performance of the box body is improved.

Description

Shock-resistant gear box body structure

Technical Field

The utility model relates to the technical field of gearboxes, in particular to a shock-resistant gearbox body structure.

Background

The gearbox is an important part widely applied in mechanical transmission, and the rotating speed of the output shaft is adjusted through the matching of the gear sets.

When each group of gears of the gear box are meshed, the gear box inevitably has errors of tooth pitch, tooth type and the like, and the gears can generate meshing impact in the running process, so that gear tooth meshing vibration occurs, and mutual sliding among the gears can generate vibration. At this time, the vibration of the gear transmits power to the gear box through the rotating shaft and the bearing, and the gear box is generally fixed by the upper box body and the lower box body through bolts, so that the vibration of the gear easily causes the looseness of the fixing bolts between the upper box body and the lower box body, and the loss of the bolts is easily caused.

The housing of the gearbox is typically bolted to the table. In bumpy road conditions, the vibration of the frame easily causes loosening of the bolts, and therefore, the bolts are usually provided with spring gaskets and nuts, and impact vibration generated by the gearbox is counteracted by utilizing recoil of the spring gaskets, so that the nuts are not affected by the impact vibration. However, when the impact shock to the spring washer is too large, the nut can be continuously impacted to loosen the nut, and the tightness of the gear box is affected.

Therefore, how to design a gear box with shock resistance is a technical problem to be solved by the person skilled in the art.

Disclosure of utility model

In order to solve at least one technical problem mentioned in the background art, the utility model aims to provide a shock-resistant gearbox body structure which solves the problem that nuts are loosened due to shock among gearbox teeth.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a shock-proof type gear box structure, includes the box that comprises lower box and last box, is equipped with the bearing installation department that supplies input shaft or output shaft to penetrate box inner chamber on the box, install first spacing flange and the spacing flange of second that sets up along input shaft or output shaft axial on the bearing installation department, install the bearing between first spacing flange and the spacing flange of second, be equipped with the shock pad on the perisporium of bearing outer lane, the both sides lateral wall of bearing respectively with first spacing flange, the spacing flange butt of second, be equipped with the installation annular on the lateral wall of bearing installation department, the shock pad outer wall is equipped with the shock attenuation rib along radial setting, the lateral wall of shock attenuation rib is pegged graft to the installation annular in and the lateral wall butt of shock attenuation rib and installation annular.

Further, a sealing gasket is arranged between the upper box body and the lower box body, and the upper box body is connected with the lower box body through bolts.

Furthermore, the upper box body and the lower box body are respectively provided with a plugging groove, the upper side and the lower side of the sealing gasket are respectively fixedly provided with a plugging part plugged into the plugging grooves, and the side wall of the plugging part is abutted with the side wall of the plugging grooves.

Further, the shock pad, the sealing pad and the plug-in connection part are made of rubber materials, and the plug-in connection part and the sealing pad are integrally formed.

Further, the bottom wall of the lower box body is provided with a plurality of grooves, and a reinforcing rib is arranged between every two adjacent grooves.

Further, the bottom wall of the lower box body is provided with an elastic pad, and a plurality of elastic blocks inserted into the grooves are fixedly arranged on the elastic pad.

Further, the lateral wall of lower box is equipped with first location flange, the lateral wall of going up the box is equipped with the second location flange, and the diapire of first location flange is equipped with the first locating hole of undercut, the roof of second location flange is equipped with the nut mounting hole of undercut, is equipped with in the first locating hole and passes the nut mounting hole and upwards extends the bolt, install the nut with bolt threaded connection in the nut mounting hole.

Further, the cross section of the nut is regular hexagonal, and the cross section of the nut mounting hole is matched with the nut to limit the rotation of the nut.

Further, washers are arranged in the first positioning holes and the nut mounting holes, and the washers are sleeved on the bolts.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the mounting positions of the bearings are limited by the first limiting flange and the second limiting flange, so that the bearings are accurately mounted, when a gear set in the box body vibrates, the vibration transmits kinetic energy to the bearings through the input shaft or the output shaft, and then the vibration is weakened by absorbing the vibration along the radial direction of the bearings by the shock pad, so that the upper box body and the lower box body are prevented from loosening; because the outer side wall of the shock pad is provided with the shock absorption rib which is inserted into the mounting ring groove, the shock absorption rib is used for absorbing the shock transmitted by the bearing along the axial direction, and the shock energy is weakened on the shock transmission path, so that the shock resistance of the box body is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of a partial structure of the present utility model;

FIG. 3 is a first angular schematic view of the lower case;

FIG. 4 is a second angular schematic view of the lower housing;

FIG. 5 is a cross-sectional view of the present utility model;

FIG. 6 is an enlarged schematic view of the structure of FIG. 5A;

FIG. 7 is a partial cross-sectional view of the present utility model;

FIG. 8 is a schematic view of a shock pad;

fig. 9 is a schematic structural view of the gasket.

In the figure: 1. a case; 101. a plug-in groove; 11. a lower box body; 111. a first positioning flange; 1111. a first positioning hole; 112. a groove; 113. reinforcing ribs; 12. an upper case; 121. a second positioning flange; 1211. a nut mounting hole; 13. a sealing gasket; 131. a plug-in part; 14. an elastic pad; 141. an elastic block; 2. a bearing mounting portion; 21. installing a ring groove; 22. the first limiting flange; 23. the second limiting flange; 3. a bearing; 4. a shock pad; 41. damping ribs; 5. a bolt; 6. a gasket; 7. and (5) a screw cap.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment provides an anti-vibration gearbox body structure, which is mainly used for solving the problem that nuts on a gearbox are loosened due to vibration.

As shown in fig. 1, the case 1 is composed of an upper case 12 and a lower case 11.

The box 1 internally mounted has a plurality of group's gear train, as shown in fig. 2, and wherein the power of gear train carries out power transmission through input shaft and output shaft, in order to reduce the frictional force between input shaft and the output shaft when rotating and box 1, all installs bearing 3 on input shaft and the output shaft.

In order to facilitate the installation of the bearing 3, in this embodiment, as shown in fig. 4, 5 and 7, a bearing installation part 2 for installing the bearing 3 is provided between the upper case 12 and the lower case 11, wherein a first limit rib 22 is provided on one side of the bearing installation part 2 away from the case 1, a second limit rib 23 is provided on an inner wall of the bearing installation part 2, and the first limit rib 22 and the second limit rib 23 are distributed along an axial direction of the input shaft or the output shaft, wherein the bearing 3 is placed between the first limit rib 22 and the second limit rib 23.

Specifically, in this embodiment, as shown in fig. 4 and 7, the first limiting flange 22 is provided with a through hole for the input shaft or the output shaft to pass through, the side wall of the first limiting flange 22 is abutted with the side wall of the inner ring of the bearing 3, and the side wall of the second limiting flange 23 is abutted with the side wall of the outer ring of the bearing 3.

Under normal circumstances, the lateral wall of bearing 3 outer lane directly with lower box 11 and last box 12 butt, when gear train inside the gear box takes place vibrations, the energy of vibrations can directly transmit to upper box 12 and lower box 11 through input shaft or output shaft and bearing 3, and the nut that carries out the fixation to upper box 12 and lower box 11 takes place not hard up easily this moment.

Therefore, in this embodiment, as shown in fig. 7, the shock-absorbing device further includes a plurality of shock-absorbing pads 4, wherein the shock-absorbing pads 4 are in a half ring shape as shown in fig. 8, and are wrapped on the outer peripheral wall of the outer ring of the bearing 3, specifically, two shock-absorbing pads 4 are wrapped on the outer ring side wall of each bearing 3, and the two shock-absorbing pads 4 are respectively mounted on the upper case 12 and the lower case 11; the outer ring of the bearing 3 is prevented from directly contacting the upper box 12 and the lower box 11, radial vibration on the input shaft or the output shaft is weakened, and the risk of loosening the nut is reduced.

When vibration occurs between the gear sets, the vibration at this time will cause the input shaft or the output shaft to have a tendency to move axially along the input shaft or the output shaft, in order to weaken the axial vibration by using the vibration absorbing rib 4, in this embodiment, as shown in fig. 7 and 8, an installation annular groove 21 is provided on a side wall of the bearing installation portion 2 between the first limit rib 22 and the second limit rib 23, a vibration absorbing rib 41 extending along a radial direction is provided on an outer side wall of the vibration absorbing rib 4, and when the vibration absorbing pad 4 is installed, the vibration absorbing rib 41 is inserted into the installation annular groove 21, and the side wall of the vibration absorbing rib 41 along the axial direction of the input shaft or the output shaft is abutted against the side wall of the installation annular groove 21.

With the above arrangement, when there is a tendency of axial movement of the input shaft or the output shaft, the power of the vibration is transmitted to the damper pad 4 through the bearing 3, and the damper pad 4 attenuates the vibration in the axial direction by the damper rib 41.

Since the gear set is lubricated by injecting the lubricant into the case 1, in order to prevent the lubricant from leaking, a gasket 13 is installed between the lower case 11 and the upper case 12 as shown in fig. 1, 5 and 6 in this embodiment. The gasket 13 is made of rubber.

In order to further reduce the influence of vibration on the axial movement of the upper case 12 and the lower case 11, in this embodiment, as shown in fig. 4 and 6, the side walls of the joint between the upper case 12 and the lower case 11 are all provided with inserting grooves 101, wherein, as shown in fig. 9, the upper and lower sides of the sealing gasket 13 are all provided with inserting parts 131, when the sealing gasket 13 is installed, the inserting parts 131 are inserted into the inserting grooves 101 on the upper case 12 and the lower case 11, and the side walls of the inserting parts 131 are abutted with the side walls of the inserting grooves 101, so that the influence of gear vibration on the upper case 12 and the lower case 11 is relieved by the inserting parts 131.

In order to fix the upper case 12 and the lower case 11, a second positioning rib 121 extending radially outwards is provided on a side wall of the upper case 12, a first positioning rib 111 extending radially outwards is provided on a side wall of the lower case 11, and the first positioning rib 111 and the second positioning rib 121 are fixed by bolts.

Specifically, in this embodiment, as shown in fig. 6, the bottom wall of the first positioning flange 111 is provided with a first positioning hole 1111, and the upper wall of the second positioning flange 121 is provided with a nut mounting hole 1211 recessed downward, wherein a bolt 5 extending upward through the nut mounting hole 1211 is provided in the first positioning hole 1111, a nut 7 is installed in the nut mounting hole 1211, and the nut 7 is in threaded connection with the bolt 5.

In order to prevent the bolt 5 from loosening with the nut 7 when the upper case 12 and the lower case 11 vibrate, in this embodiment, as shown in fig. 6, a washer 6 is sleeved on the bolt 5, wherein after the bolt 5 is installed, the end of the bolt 5 abuts against one side surface of the washer 6, the other side surface of the washer 6 abuts against the lower case 11, a washer 6 is installed between the nut 7 and the upper case 12, and when the bolt 5 is in threaded connection with the nut 7, the washer 6 is elastically deformed.

Specifically, the gasket 6 is made of rubber, as shown in fig. 1, the nut 7 is a hexagonal nut, and the nut mounting hole 1211 is adapted to the shape of the nut 7, so as to prevent the nut 7 from rotating in the nut mounting hole 1211. In this state, even if the nut 7 is loosened, the nut 7 is still stored in the nut mounting hole 1211, preventing the nut 7 from being lost.

Since the gear box is generally mounted on the frame, in order to prevent poor road conditions, which results in jolt of the frame and loosening of the gear box and the frame, in this embodiment, as shown in fig. 2 and 3, the bottom wall of the lower box 11 is provided with a plurality of grooves 112, and a reinforcing rib 113 is disposed between two adjacent grooves 112, so that the weight of the lower box 11 is reduced and the strength of the lower box 11 is improved.

In order to prevent vibration of the frame, the bottom of the lower case 11 is provided with an elastic pad 14, the elastic pad 14 is fixedly provided with an elastic block 141 inserted into the groove 112, and then the case 1 is fixed on the frame by bolts.

The elastic pad 14 and the elastic block 141 absorb the vibration energy transferred from the frame to the box 1, and prevent the frame from loosening from the box 1.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (9)

1. The utility model provides an antidetonation formula gear box structure, includes box (1) that comprises lower box (11) and last box (12), its characterized in that: the bearing mounting part (2) for an input shaft or an output shaft to penetrate into the inner cavity of the box body (1) is arranged on the box body (1), a first limiting flange (22) and a second limiting flange (23) which are axially arranged along the input shaft or the output shaft are arranged on the bearing mounting part (2), a bearing (3) is arranged between the first limiting flange (22) and the second limiting flange (23), a shock pad (4) is arranged on the peripheral wall of an outer ring of the bearing (3), two side walls of the bearing (3) are respectively abutted to the first limiting flange (22) and the second limiting flange (23), a mounting ring groove (21) is arranged on the side wall of the bearing mounting part (2), shock absorbing ribs (41) are arranged on the outer wall of the shock pad (4) in a plugging mode into the mounting ring groove (21), and the side walls of the shock absorbing ribs (41) are abutted to the side walls of the mounting ring groove (21).

2. An anti-knock gearbox casing structure according to claim 1, characterized in that: a sealing gasket (13) is arranged between the upper box body (12) and the lower box body (11), and the upper box body (12) is connected with the lower box body (11) through bolts.

3. An anti-knock gearbox casing structure according to claim 2, characterized in that: the upper box body (12) and the lower box body (11) are respectively provided with a plugging groove (101), the upper side and the lower side of the sealing gasket (13) are respectively fixedly provided with a plugging part (131) plugged into the plugging grooves (101), and the side wall of the plugging part (131) is abutted to the side wall of the plugging grooves (101).

4. A shock resistant gearbox housing structure according to claim 3, wherein: the shock pad (4), the sealing pad (13) and the plug-in connection part (131) are made of rubber materials, and the plug-in connection part (131) and the sealing pad (13) are integrally formed.

5. An anti-knock gearbox casing structure according to claim 1, characterized in that: the bottom wall of the lower box body (11) is provided with a plurality of grooves (112), and a reinforcing rib (113) is arranged between every two adjacent grooves (112).

6. An anti-knock gearbox casing structure according to claim 5, characterised in that: the bottom wall of the lower box body (11) is provided with an elastic pad (14), and a plurality of elastic blocks (141) inserted into the grooves (112) are fixedly arranged on the elastic pad (14).

7. An anti-knock gearbox casing structure according to claim 2, characterized in that: the side wall of lower box (11) is equipped with first location flange (111), the lateral wall of going up box (12) is equipped with second location flange (121), and the diapire of first location flange (111) is equipped with upwards sunken first locating hole (1111), the roof of second location flange (121) is equipped with undercut nut mounting hole (1211), is equipped with in first locating hole (1111) and passes nut mounting hole (1211) and upwards extends bolt (5), install in nut mounting hole (1211) with bolt (5) threaded connection's nut (7).

8. An anti-knock gearbox casing structure according to claim 7, wherein: the cross section of the nut (7) is regular hexagonal, and the cross section of the nut mounting hole (1211) is matched with the nut (7) to limit the rotation of the nut (7).

9. An anti-knock gearbox casing structure according to claim 7, wherein: washers (6) are arranged in the first positioning holes (1111) and the nut mounting holes (1211), and the washers (6) are sleeved on the bolts (5).