CN209083951U - A kind of heavy truck and its gearbox - Google Patents

Abstract

This application discloses a kind of heavy truck and its gearbox, gearbox includes input shaft and the gear with input shaft rotation connection, and the gear is set on the input shaft, and clearance fit between the gear and the input shaft.Gearbox provided herein, utilize the clearance fit between the gear and the input shaft, eliminate the use of needle bearing in the prior art, the intensity of gear and input shaft can be increased simultaneously, thus greatly reduce the probability of damage of gear and input shaft, the frequency of maintenance for reducing gearbox, extends the service life of gearbox.

Description

A kind of heavy truck and its gearbox

Technical field

This application involves gearbox apparatus fields, more particularly to a kind of gearbox.In addition, the application further relates to a kind of packet Include the heavy truck of above-mentioned gearbox.

Background technique

In the gearbox of heavy truck, since the revolving speed of input shaft and gear is not identical in gearbox, it is therefore desirable to pacify Needle bearing is filled to support gear to turn round and bear radial load, i.e., the gear on input shaft generally uses needle bearing to prop up Support.

However, needle bearing abrasion is accelerated under the action of gearbox high speed rotation and radial load.If needle bearing Abrasion loss, which crosses conference, makes gear eccentricity, cannot normally engage so as to cause gear, cannot also transmit torque, entire gearbox it is defeated Torque can interrupt out.In actual use, gear can be because the damage of needle bearing be to transmit torque.

Therefore, the service life of gearbox how is improved, frequency of maintenance is reduced, is that those skilled in the art need to solve at present Certainly the technical issues of.

Utility model content

The purpose of the application is to provide a kind of gearbox, which effectively reduces gear and the damage of input shaft is general Rate prolongs the service life.The another object of the application is to provide a kind of heavy truck including above-mentioned gearbox.

To achieve the above object, the application provides the following technical solutions:

A kind of gearbox, the gear including input shaft and with input shaft rotation connection, the gear is set in described On input shaft, and clearance fit between the gear and the input shaft.

Preferably, the gap size between the gear and the input shaft is 0.116~0.158mm.

It preferably, further include cabinet for installing the input shaft Yu the gear, the cabinet is equipped with for limiting Make the limiting section of the gear position.

Preferably, it is offered on the input shaft for lubricating oil flow to the gap between the gear and the input shaft In channel.

Preferably, one end of the input shaft is equipped with the hollow space with ring-shaped step, the one end in the channel and institute Hollow space connection is stated, the gap between the other end and the gear and the input shaft is connected to.

Preferably, the inner peripheral portion of the gear is additionally provided with the annular groove for channel described in outflow of lubrication oil.

The application also provides a kind of heavy truck, including gearbox described in above-mentioned any one.

Gearbox provided herein, the gear including input shaft and with input shaft rotation connection, the gear It is set on the input shaft, and clearance fit between the gear and the input shaft.The gearbox utilizes the gear With the clearance fit between the input shaft, eliminate the use of needle bearing in the prior art, can increase simultaneously gear and The intensity of input shaft thus greatly reduces the probability of damage of gear and input shaft, reduces the frequency of maintenance of gearbox, extends The service life of gearbox.

Heavy truck provided herein is equipped with above-mentioned gearbox, since the gearbox has above-mentioned technique effect, Therefore, the heavy truck equipped with the gearbox should also be as having corresponding technical effect.

Detailed description of the invention

In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 is a kind of structural schematic diagram of specific embodiment of gearbox provided herein；

Wherein: 1- input shaft, 2- gear.

Specific embodiment

The core of the application is to provide a kind of gearbox, which can significantly reduce the frequency of maintenance of gearbox, extends The service life of gearbox.Another core of the application is to provide a kind of heavy truck including above-mentioned gearbox.

Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall in the protection scope of this application.

Referring to FIG. 1, Fig. 1 is a kind of structural schematic diagram of specific embodiment of gearbox provided herein.

In this embodiment, gearbox includes input shaft 1 and gear 2, and gear 2 and input shaft 1 are rotatablely connected, gear 2 It is set on input shaft 1, and clearance fit between gear 2 and input shaft 1, can be relatively rotated between gear 2 and input shaft 1, Gear 2 is different from the revolving speed of input shaft 1.

The gearbox eliminates needle bearing in the prior art using the clearance fit between gear 2 and input shaft 1 It uses, the intensity of gear 2 and input shaft 1 can be increased simultaneously, thus greatly reduce the probability of damage of gear 2 and input shaft 1, The frequency of maintenance for reducing gearbox, extends the service life of gearbox.

On the basis of the respective embodiments described above, gap size between gear 2 and input shaft 1 is 0.116~ 0.158mm can meet the gap that lubricating oil flows between gear 2 and input shaft 1, it can also be ensured that gear 2 and input shaft 1 It relatively rotates.

On the basis of the respective embodiments described above, further includes the cabinet for installing input shaft 1 Yu gear 2, set on cabinet There is the limiting section for 2 position of limiting gear.Specifically, limiting section can be the boss or step being arranged on cabinet, it is used for The position of limiting gear 2 prevents gear 2 from moving in the axial direction of input shaft 1.

On the basis of the respective embodiments described above, offered on input shaft 1 for lubricating oil flow to gear 2 and input shaft 1 Between gap in channel, when gearbox work, lubricating oil can form oil in the gap between gear 2 and input shaft 1 The phenomenon that film guarantees the normal rotation between input shaft 1 and gear 2, avoids gear 2 that from cannot normally engaging, while increasing tooth The intensity of wheel 2 and input shaft 1.

On the basis of the respective embodiments described above, one end of input shaft 1 is equipped with the hollow space with ring-shaped step, channel One end be connected to hollow space, the gap between the other end and gear 2 and input shaft 1 is connected to.Specifically, lubricating oil can be from One end hollow space of input shaft 1 flows in channel, then flows in the gap between input shaft 1 and gear 2.

On the basis of the respective embodiments described above, the inner peripheral portion of gear 2 is additionally provided with for the annular recessed of outflow of lubrication oil channel Slot, lubricating oil first flow into annular groove, after flowing out in channel subsequently into the gap between gear 2 and input shaft 1.

Other than above-mentioned gearbox, present invention also provides a kind of heavy truck including above-mentioned gearbox, the heavy types Refer to the prior art for other Each parts of truck, and repeats no more herein.

Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.

Gearbox provided herein is described in detail above.Specific case used herein is to the application Principle and embodiment be expounded, the present processes that the above embodiments are only used to help understand and its core Thought is thought.It should be pointed out that for those skilled in the art, under the premise of not departing from the application principle, Can also to the application, some improvement and modification can also be carried out, these improvement and modification also fall into the protection scope of the claim of this application It is interior.

Claims (7)

1. a kind of gearbox, which is characterized in that the gear (2) including input shaft (1) and with the input shaft (1) rotation connection, The gear (2) is set on the input shaft (1), and clearance fit between the gear (2) and the input shaft (1).

2. gearbox according to claim 1, which is characterized in that between the gear (2) and the input shaft (1) Gap size is 0.116~0.158mm.

3. gearbox according to claim 1, which is characterized in that further include for install the input shaft (1) with it is described The cabinet of gear (2), the cabinet are equipped with the limiting section for limiting the gear (2) position.

4. according to claim 1 to gearbox described in 3 any one, which is characterized in that offer confession on the input shaft (1) Channel of the lubricating oil flow into the gap between the gear (2) and the input shaft (1).

5. gearbox according to claim 4, which is characterized in that one end of the input shaft (1), which is equipped with, has annular table The hollow space of rank, the one end in the channel are connected to the hollow space, the other end and the gear (2) and the input shaft (1) the gap connection between.

6. gearbox according to claim 4, which is characterized in that the inner peripheral portion of the gear (2) is additionally provided with for lubricating oil Flow out the annular groove in the channel.

7. a kind of heavy truck, including gearbox, which is characterized in that the gearbox is described in claim 1 to 6 any one Gearbox.