CN219062429U

CN219062429U - 4.5t forklift steering axle assembly

Info

Publication number: CN219062429U
Application number: CN202223134027.9U
Authority: CN
Inventors: 左维; 王平; 王杰; 张增密; 郭顺; 鲍文芳; 左改兵; 马梦雅; 严益民
Original assignee: Anqing Heli Axle Co ltd
Current assignee: Anqing Heli Axle Co ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-05-23
Anticipated expiration: 2032-11-23

Abstract

The utility model provides a 4.5t forklift steering axle assembly, which comprises an axle body, a main pin and a steering knuckle, wherein the main pin and the steering knuckle are arranged on a main pin seat of the axle body through roller bearings, a corner positioning device which is axially distributed along the main pin and embedded into the main pin and an upper cover for fixing one end of the main pin are arranged on one side of the main pin seat, and a hub cover for fixing the other end of the main pin are arranged on the other side of the main pin seat.

Description

4.5t forklift steering axle assembly

Technical Field

The utility model relates to the technical field of forklift steering axles, in particular to a steering axle assembly for a 4.5t forklift.

Background

The fork truck is used more and more widely as the materials handling vehicle, the connection of current fork truck steering axle and steering wheel, mainly be connected by steering knuckle king pin, fork truck need possess the function of automatic alignment when traveling in a straight line, and fork truck need make the steering angle of steering wheel be in a settlement scope when turning, prevent steering wheel steering angle undersize or too big, therefore prior art is in order to guarantee the stability of fork truck when traveling and turning, the locator that detects the steering angle of king pin is commonly configured, like patent application number 202121922963.9, the authorized bulletin number is CN215905807U, the name is a double drive lithium electric fork truck steering axle rim structure, and specifically disclose the scheme that detects king pin steering angle through steering detection assembly, current corner locator usually sets up in the king pin outside, it is difficult to effectively detect the rotation amount of king pin, it has the defect in the aspect of detecting accuracy.

Disclosure of Invention

In order to solve the technical problems, the utility model accurately measures the rotation quantity of the main pin during working through the rotation angle positioner directly connected with the main pin, simultaneously utilizes the tapered roller bearing to improve the bearing capacity of the steering axle assembly, utilizes the three-lip oil seal structure to achieve the dual functions of sealing and exhausting, and simultaneously simplifies the assembly difficulty of the bridge body sealing piece, and the specific technical scheme is as follows:

the utility model provides a 4.5t fork truck steering axle assembly, includes the bridge body, sets up kingpin and knuckle on the main cotter seat of bridge body through roller bearing, one side be equipped with on the main cotter seat along kingpin axial distribution and imbed the inside corner locating device of kingpin and be used for the upper cover of fixed kingpin one end, the opposite side be equipped with the hub cap that is used for fixing the kingpin other end on the main cotter seat, wherein be equipped with the sealing member that is used for sealed roller bearing in the main cotter seat.

Preferably, the corner positioning device comprises a cross plate fixedly arranged at the end part of the main pin, a sensor which is axially arranged on the cross plate along the main pin and is embedded into the main pin, and a sensor protection cover arranged on the upper cover.

Preferably, the end of the main pin is provided with a cross groove matched with the cross plate.

Preferably, a sealing paper pad is further arranged between the upper cover and the main pin seat, and the upper cover is fixedly arranged on the main pin seat through bolts.

Preferably, the seal comprises a first seal for a roller bearing seal in one side main keyway and a second seal for a roller bearing seal in the other side main keyway.

Preferably, the first sealing element comprises an iron shell oil seal arranged at the bottom of a main pin seat at one side and used for sealing one side of the roller bearing, a three-lip oil seal arranged at the top of the main pin seat at the side and used for sealing the other side of the roller bearing, and an upper spacer arranged between the roller bearing at the side and the knuckle.

Preferably, the second sealing element comprises a three-lip oil seal II which is arranged at the top of the main pin seat at the other side and is used for sealing the roller bearing, and a lower spacer sleeve which is arranged between the roller bearing at the side and the steering knuckle.

Preferably, the main pin seat is also provided with a grease nipple.

Preferably, the roller bearing is a tapered roller bearing.

According to the technical scheme, the utility model has the following beneficial effects:

1. according to the utility model, the main pin is arranged in the main pin seat through tapered roller bearings at two sides, the sensor on the corner locator is embedded into the end part of the main pin through the cross plate arranged at the end part of the main pin, the protection is carried out through the sensor protection cover, the tapered roller bearing at one side is sealed through a sealing structure consisting of an iron shell oil seal, a three-lip oil seal and an upper spacer bush in the first sealing piece, and the tapered roller bearing at the other side is sealed through a sealing structure consisting of the three-lip oil seal and a lower spacer bush.

2. In the utility model, the bearing capacity of the steering axle assembly is improved by utilizing the characteristic of high bearing capacity of the tapered roller bearing, and in addition, the three-lip oil seal structure has the sealing and exhausting functions at the same time, and the assembly difficulty can be simplified.

Drawings

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

FIG. 2 is an enlarged view of a portion A of FIG. 2;

fig. 3 is a schematic structural view of a cross plate.

In the figure: 10. a bridge body; 20. a roller bearing; 30. a main pin base; 311. a cross plate; 312. a sensor; 313. a sensor protective cover; 320. an upper cover; 40. a kingpin; 50. a knuckle; 60. a hub cap; 70. sealing paper pads; 80. a bolt; 911. an iron shell oil seal; 912. sealing the three lips with oil; 913. a spacer bush is arranged; 921. sealing the second lip with oil; 922. and (5) a lower spacer bush.

Detailed Description

The present utility model will be described in detail below with reference to the drawings and detailed embodiments, and before the technical solutions of the embodiments of the present utility model are described in detail, the terms and terms involved will be explained, and in the present specification, the components with the same names or the same reference numerals represent similar or identical structures, and are only limited for illustrative purposes.

Referring to fig. 1, a 4.5t forklift steering axle assembly comprises an axle body 10, a main pin 40 and a steering knuckle 50 which are arranged on a main pin seat 30 of the axle body through a roller bearing 20, further, a corner positioning device which is axially distributed along the main pin and embedded in the main pin and an upper cover 320 for fixing one end of the main pin are arranged on one main pin seat, so that the steering angle of the steering axle main pin during rotation is directly measured by the corner positioning device embedded in the main pin, the measurement precision of the steering angle of the main pin is improved, in addition, a hub cover 60 for fixing the other end of the main pin is arranged on the other main pin seat, and a sealing piece for sealing the roller bearings is arranged in the main pin seat.

Referring to fig. 2 and 3, as a preferred embodiment of the present utility model, the corner positioning device includes a cross plate 311, a sensor 312 and a sensor protection cover 313, the cross plate 311 is fixedly disposed at an end of the main pin 40, the sensor 312 is disposed on the cross plate along an axial direction of the main pin and is embedded into the main pin, the sensor protection cover 313 is disposed on the upper cover 320, the sensor protection cover 313 has an effect of protecting the sensor, further, a D-shaped hole is disposed on the cross plate, and in order to facilitate installation of the cross plate 311, a cross groove is disposed at the end of the main pin 40, so that the cross plate is installed at an end of the main pin 40, and the sensor 312 is fixedly installed at the end of the main pin through the D-shaped hole of the cross plate, thereby realizing fixation of the corner positioning device.

Further, in order to seal the main pin seat 30 on the corner locator side, a sealing paper gasket 70 is further provided between the upper cover 320 and the main pin seat 30, and in order to fix the upper cover, the upper cover may be fixed to the main pin seat by bolts 80.

As a preferred embodiment of the present utility model, the sealing elements include a first sealing element for sealing the roller bearing in the main pin holder 30 on one side and a second sealing element for sealing the roller bearing in the main pin holder 30 on the other side, specifically, the first sealing element includes an iron shell oil seal 911, a three-lip oil seal 912 and an upper spacer 913, the iron shell oil seal 911 is disposed at the bottom of the main pin holder 30 on one side for sealing the roller bearing, the three-lip oil seal 912 is disposed at the top of the main pin holder on the other side for sealing the roller bearing, and the upper spacer 913 is disposed between the roller bearing 20 and the knuckle 50, so that the roller bearing in the main pin holder 30 on one side is sealed by using the sealing structure formed by the iron shell oil seal 911, the three-lip oil seal 912 and the upper spacer 913.

Further, the second seal includes a second three-lip oil seal 921 and a lower spacer sleeve 922, the second three-lip oil seal 921 being disposed on top of the other side main pin housing 30 for sealing the roller bearing, the lower spacer sleeve 922 being disposed between the side roller bearing and the knuckle 50, such that the roller bearing in the other side main pin housing 30 can be sealed by the lower spacer sleeve 922, the second three-lip oil seal 921 and the hub cap 60.

It should be noted that, because the steering axle wheel side main pin seat in the prior art mostly adopts a needle bearing and one-way thrust ball bearing structure, the bearing capacity of the structure is limited, and the use requirement of a large-tonnage forklift is difficult to meet, so the roller bearing in the utility model adopts a tapered roller bearing, and the bearing capacity of the forklift is improved by utilizing the advantage of high bearing capacity of the tapered roller bearing.

Meanwhile, the inner side of the inner gear opening of the existing bridge body main pin is sealed by adopting an iron shell oil seal structure, and the problem of difficult assembly exists.

As a preferable technical scheme of the utility model, the main pin seat 30 is also provided with a grease nipple, and grease for lubricating the tapered roller bearing can enter the main pin seat from the grease nipple and reach the inside of the bearing.

When the steering axle assembly is used, the main pin 40 is arranged in the main pin seat 30 through tapered roller bearings at two sides, the sensor 312 on the corner positioner is embedded into the end part of the main pin through the cross plate 311 arranged at the end part of the main pin 40 and is protected through the sensor protection cover 313, the tapered roller bearing at one side is sealed through a sealing structure consisting of the iron shell oil seal 911, the three-lip oil seal 912 and the upper spacer 913 in the first sealing element, the tapered roller bearing at the other side is sealed through a sealing structure consisting of the three-lip oil seal 921 and the lower spacer 922, the accurate detection of the steering angle of the main pin can be realized, and meanwhile, the bearing capacity of the steering axle assembly can be improved through the tapered roller bearing.

The above-described embodiments are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.

Claims

1. The utility model provides a 4.5t fork truck steering axle assembly, includes the bridge body (10), sets up king pin (40) and knuckle (50) on bridge body king pin seat (30) through roller bearing (20), its characterized in that, one side be equipped with on the king pin seat along the inside corner locating device of king pin axial distribution and embedding and be used for fixed upper cover (320) of king pin one end, the opposite side be equipped with on the king pin seat be used for fixed hub cap (60) of king pin other end, wherein, be equipped with the sealing member that is used for sealing roller bearing in the king pin seat.

2. The 4.5t forklift steering axle assembly of claim 1, wherein the corner positioning means comprises a cross plate (311) secured to the end of the kingpin (40), a sensor (312) axially disposed on the cross plate along the kingpin and embedded within the kingpin, and a sensor protective cover (313) disposed on the upper cover (320).

3. The 4.5t forklift steering axle assembly of claim 2, wherein the kingpin (40) ends are provided with cross slots that mate with cross plates.

4. The 4.5t forklift steering axle assembly according to claim 2, wherein a sealing paper pad (70) is further arranged between the upper cover (320) and the main pin base (30), and the upper cover is fixedly arranged on the main pin base through bolts (80).

5. The 4.5t forklift steer axle assembly of claim 4, wherein said seals comprise a first seal for roller bearing sealing in one side main keyway (30) and a second seal for roller bearing sealing in the other side main keyway (30).

6. The 4.5t forklift steering axle assembly of claim 5, wherein said first seal comprises an iron shell oil seal (911) disposed at the bottom of one side master pin boss (30) for one side sealing of the roller bearing, a three-lip oil seal (912) disposed at the top of the one side master pin boss for the other side sealing of the roller bearing, and an upper spacer (913) disposed between the side roller bearing (20) and the knuckle (50).

7. The 4.5t forklift steer axle assembly of claim 6, wherein said second seal comprises a three-lip oil seal (921) disposed on top of the other side main keyway (30) for roller bearing sealing and a lower spacer (922) disposed between the side roller bearing and the knuckle (50).

8. The 4.5t forklift steering axle assembly of claim 1, wherein said kingpin mount (30) is further provided with a grease nipple.

9. The 4.5t forklift truck steer axle assembly of any one of claims 1 to 8, wherein said roller bearing (20) is a tapered roller bearing.