CN217736013U

CN217736013U - Transmission shaft for swing rod bearing

Info

Publication number: CN217736013U
Application number: CN202221618417.0U
Authority: CN
Inventors: 朱红胜
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-11-04
Anticipated expiration: 2032-06-27

Abstract

The utility model discloses a transmission shaft for swing rod bearing, it includes the transmission shaft and cup joints the swing rod bearing of transmission shaft periphery side, swing rod bearing includes bearing inner circle and bearing inner race, the bearing inner circle with be equipped with a plurality of balls between the bearing inner race, a plurality of balls are connected through the holder, the bearing inner race be equipped with bearing inner race even pendulum rod as an organic whole, the bearing inner circle clearance cup joints on the transmission shaft, the surface that the transmission shaft is located bearing inner circle position department is equipped with and hides the oil groove. Has the advantages that: when the transmission shaft rotates at a high speed, lubricating grease in the oil storage groove can be thrown onto the inner side wall of the bearing inner ring, so that the lubricating grease enters a friction surface between the transmission shaft and the bearing inner ring, a good lubricating effect is achieved, and the service life of the swing rod bearing and the transmission shaft is prolonged.

Description

Transmission shaft for swing rod bearing

Technical Field

The utility model relates to an electric tool, concretely relates to a transmission shaft for swing rod bearing.

Background

The transmission shaft and the swing rod bearing are common parts of the traditional electric hammer. As shown in fig. 1, in the conventional electric hammer, a drive shaft a and a swing rod bearing b are connected to each other by a needle bearing c. Because the needle bearing is small and exquisite, and the electric hammer has stronger impact load when working, the needle bearing is easy to damage.

In order to solve the problem, the chinese utility model patent with publication number CN210978232U adopts the following technical scheme, a swing rod bearing, including bearing core, the bearing shell that overlaps outside the bearing core, the holder that presss from both sides between bearing core and bearing shell, is equipped with the ball on the holder, is equipped with the pendulum rod on the bearing shell, is equipped with the installation through-hole with the direct clearance fit of jackshaft on the bearing core, be equipped with the oil storage tank on the interior anchor ring of installation through-hole.

The technical scheme of this patent adopts direct cancellation bearing, reduce the diameter of bearing core installation through-hole simultaneously, make installation through-hole direct and jackshaft clearance fit, needle bearing has been omitted, the cost is reduced, and set up the oil storage tank and store butter (lubricating grease) and be used for the friction surface between lubricated installation through-hole and the jackshaft at installation through-hole internal surface, when just beginning butter to be full of oil storage tank, the jackshaft is still contactable to the butter, can obtain the lubrication between installation through-hole and the jackshaft, use a period of time after, the butter is no longer full, under the rotatory centrifugal force effect of bearing core, the butter of semi-solid state hugs closely on the bottom surface of oil storage tank, make and take place dry friction between installation through-hole and the jackshaft, just so can make the bearing core damage soon, thereby lead to the abandonment of swing rod bearing.

Disclosure of Invention

In order to overcome the above-mentioned defects, the utility model discloses the technical problem that needs to solve is: the transmission shaft for the swing rod bearing ensures that a friction surface of a bearing inner ring in clearance fit with the transmission shaft can be lubricated by lubricating grease all the time, so that the service life of the swing rod bearing is prolonged.

The utility model provides a technical scheme that prior art exists the problem is: the utility model provides a transmission shaft for swing rod bearing, it includes the transmission shaft and cup joints the swing rod bearing of transmission shaft periphery side, swing rod bearing includes bearing inner race and bearing outer lane, the bearing inner race with be equipped with a plurality of balls between the bearing outer lane, a plurality of balls are connected through the holder, the bearing outer lane be equipped with bearing outer lane links pendulum rod as an organic whole, bearing inner race clearance cup joints on the transmission shaft, the surface that the transmission shaft is located bearing inner race position department is equipped with and hides the oil groove.

The swing rod bearing is rotatably connected to the position of the oil storage groove of the transmission shaft, when the transmission shaft is in work, the transmission shaft rotates at a high speed, lubricating grease stored in the oil storage groove of the transmission shaft can be continuously extruded towards the inner side wall direction of the bearing inner ring under the action of centrifugal force, and before the lubricating grease is not completely consumed, friction between the transmission shaft and the bearing inner ring can be effectively lubricated by the lubricating grease all the time. Therefore, the utility model discloses technical scheme not only because omit bearing and reduce cost, can prolong transmission shaft, swing rod bearing's life moreover by a wide margin.

Hide the length extending direction of oil groove with the axial direction parallel of transmission shaft, hide the quantity of oil groove and be a plurality of, a plurality of hide the oil groove and follow transmission shaft circumference equipartition.

The oil storage groove extends spirally along the outer surface of the transmission shaft.

The oil storage groove is an annular groove, the number of the oil storage grooves is a plurality of, and a plurality of the oil storage grooves are arranged along the axial direction of the transmission shaft at equal intervals.

The utility model has the advantages of as follows: when the transmission shaft rotates at a high speed, lubricating grease in the oil storage groove can be thrown onto the inner side wall of the bearing inner ring, so that the lubricating grease enters a friction surface between the transmission shaft and the bearing inner ring, a good lubricating effect is achieved, and the service life of the swing rod bearing and the transmission shaft is prolonged.

Drawings

FIG. 1 is a schematic diagram of a prior art configuration;

fig. 2 is a schematic structural view of the present invention;

fig. 3 is a perspective view of the middle transmission shaft of the present invention;

fig. 4 is a cross-sectional view of the oil sump is hidden in the middle transmission shaft of the present invention.

Fig. 5 is a perspective view showing another structure of the middle transmission shaft according to the present invention;

fig. 6 is a perspective view of a third structure of the middle transmission shaft of the present invention.

In the figure: the oil-gas separator comprises a transmission shaft 1, an oil storage groove 2, a swing rod bearing 3, a bearing inner ring 4, a swing rod 5, a ball 6, a bearing outer ring 7 and a retainer 8.

Detailed Description

The invention will be further described by the following specific embodiments in conjunction with the drawings attached to the specification.

The first embodiment is as follows:

a transmission shaft for a swing rod bearing is disclosed, as shown in fig. 2 to fig. 4, and comprises a transmission shaft 1 and a swing rod bearing 3 sleeved on the outer peripheral side of the transmission shaft 1, wherein the swing rod bearing 3 comprises a bearing inner ring 4 and a bearing outer ring 7, a plurality of balls 6 are arranged between the bearing inner ring 4 and the bearing outer ring 7, the balls 6 are connected through a retainer 8, the bearing outer ring 7 is provided with a swing rod 5 connected with the bearing outer ring 7 into a whole, the bearing inner ring 4 is sleeved on the transmission shaft 1 in a clearance manner, an oil hiding groove 2 is arranged on the outer surface of the transmission shaft 1 at the position of the bearing inner ring 4, the length extending direction of the oil hiding groove 2 is parallel to the axial direction of the transmission shaft 1, the number of the oil hiding grooves 2 is four, and the four oil hiding grooves 2 are uniformly distributed along the circumferential direction of the transmission shaft 1.

Example two:

a transmission shaft for a swing rod bearing, as shown in FIG. 5, the second embodiment is different from the first embodiment in that the oil sump 2 extends spirally along the outer surface of the transmission shaft 1.

Example three:

a transmission shaft for a swing rod bearing is characterized in that, as shown in fig. 6, the third embodiment is different from the first embodiment in that the oil storage grooves 2 are annular grooves, the number of the oil storage grooves 2 is five, and five oil storage grooves 2 are equidistantly arranged along the axial direction of the transmission shaft 1.

The embodiments described above are merely three preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and there are other variations and modifications without departing from the technical scope of the claims.

Details not described in the present specification belong to the prior art known to those skilled in the art.

Claims

1. The utility model provides a transmission shaft for swing rod bearing, it includes the transmission shaft and cup joints the swing rod bearing of transmission shaft periphery side, swing rod bearing includes bearing inner race and bearing outer lane, the bearing inner race with be equipped with a plurality of balls between the bearing outer lane, a plurality of balls are connected through the holder, the bearing outer lane be equipped with the pendulum rod that the bearing outer lane links as an organic whole, its characterized in that, bearing inner race gap cup joints on the transmission shaft, the surface that the transmission shaft is located bearing inner race position department is equipped with and hides the oil groove.

2. The drive shaft for a rocker bearing of claim 1, wherein the length of the oil reservoir is parallel to the axial direction of the drive shaft, and the oil reservoir is provided in a plurality of numbers, which are uniformly distributed along the circumferential direction of the drive shaft.

3. The drive shaft for a rocker bearing of claim 1, wherein the oil sump extends helically along an outer surface of the drive shaft.

4. The drive shaft for a rocker bearing of claim 1, wherein the oil reservoir is an annular groove, and the oil reservoir is plural in number, and the plural oil reservoirs are arranged at equal intervals in the axial direction of the drive shaft.