JP2538506Y2 - Automatic greasing equipment for working vehicles - Google Patents

Description

The present invention relates to a work vehicle such as a backhoe, and more particularly to an automatic lubrication device for lubricating a predetermined portion of a revolving structure.

(B) Conventional technology Conventionally, grease was manually supplied to a predetermined greasing point using a grease gun. Further, since the swing cylinder support shaft, the swing bearing, the swing gear and the like are not effective unless greasing while turning, one person has to turn the revolving body and the other has to greasing outside the machine.

(C) Problems to be solved by the invention By the way, in the case of manual greasing as described above, the portion that is exposed to the outside such as the front part is easy to greasing, but the portion that is not exposed to the outside is greasing. It was difficult. In addition, when one person turns the revolving body and another person supplies oil outside the machine, the greasing operation involves danger.

Therefore, an object of the present invention is to provide an automatic lubrication device for a working vehicle, which is configured to automatically lubricate a predetermined portion when the swing body swings a predetermined number of times, thereby solving the above-described problem. It is.

(D) Means for Solving the Problems The present invention has been made in view of the above circumstances, and for example, referring to FIGS. 1 and 2, the traveling device (2,
In a working vehicle (1) having a revolving body (5) mounted on a machine body (3) supported by 2) so as to be able to turn left and right, a greasing means (35) for supplying grease to a predetermined portion of the revolving body (5). , 41,45,47,
Counting means (2, 49, 50) for counting the number of swings of the swing body (5) based on the operation of the swing operation lever.
3) and a greasing control means (22) for operating the greasing means for a certain time when the count by the counting means (23) reaches a set value.

(E) Operation Based on the above-described configuration, when the revolving structure (5) swings by the operation of the revolving operation lever by the operator, the counting means (23) counts the number of swings. When the count by the counting means (23) reaches the set number,
The greasing control means (22) is the greasing means (35,41,45,47,49,50)
Is operated for a certain period of time to lubricate a predetermined portion of the revolving body (5).

(F) Effects of the present invention As described above, according to the present invention, the revolving superstructure (5)
Is automatically supplied to a predetermined portion of the revolving body (5) for a certain period of time based on the number of swings of the revolving body (5). Can be effectively lubricated while turning.

Also, instead of the judgment by the operator, the revolving superstructure (5)
When the number of swings reaches the set number, a fixed amount of oil is automatically supplied, so that it is possible to supply oil at an optimum frequency and with an appropriate amount, and no trouble occurs due to an operator's misjudgment on lubrication and an erroneous operation.

In addition, since the revolving superstructure (5) is turned by one operator and the greasing is automatically performed, no person is required for the greasing work, and further, danger in the greasing work can be avoided, and the safety can be secured. Can be greased.

The reference numerals in parentheses are for referring to the drawings, and do not limit the configuration.

(G) Embodiment Hereinafter, an embodiment according to the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the small construction machine 1 has a machine body 3 supported by a pair of right and left crawler traveling devices 2 and 2, and a revolving unit 5 is provided above the machine body 3. Is installed to be able to turn left and right. An internal gear 6 is fixed to an upper portion of the body 3, and a swing bearing 7 is fitted on an outer periphery of the internal gear 6. A swing table 10 is fixed to the upper part of the outer race of the swing bearing 7 by bolts 9, and the revolving unit 5 is mounted and fixed to the swing table 10. A revolving gear case 11 is disposed below the revolving body 5, and a pinion gear 12 is connected to the revolving gear case 11, and the pinion gear 12 meshes with the internal gear 6. Then, by the rotation of the pinion gear 12, around the turning center 13,
The swing table 10 and the swing body 5 are configured to swing left and right.

A swing post is provided at the front end of the swing table 10.
16 is attached via a pin 17 so that it can rotate left and right,
On the upper part of the swing post 16, a front including a backhoe or the like is provided. And swing table 10
A swing cylinder support shaft 19 is fixed to one rear end of the swing cylinder.
One end of the swing post 20 is rotatably mounted, and the other end of the swing cylinder 20 is
It is rotatably supported via 21. The swing post 16 is configured to rotate left and right by the operation of the swing cylinder 20.

There is also a counter switch on the swing table 10.
A counter switch 22 has an upper end portion fitted to the tip of the shaft of the counter switch 22.
The counter lever 23 extends downward and penetrates the elongated hole 10a of the swing table, and a lower end portion thereof is configured to abut on a tip end portion of a projection spring 25 provided on an upper side surface of the body 3. .

An engine 27 and a battery are located behind the revolving superstructure 5.
29 is mounted, and a weight 30 is arranged so as to surround the rear of the engine 27 and the battery 29.

A greasing tank 31, a fuel tank 32, and a hydraulic oil tank 33 are provided on one side of the revolving structure 5 from the front. Above the greasing tank 31, a greasing motor 35 is provided.
A motor pinion 36 is connected to a rotation shaft of the greasing motor 35, and a reduction gear 37 is meshed with the motor pinion 36, and a rack gear 39 is meshed with the reduction gear 37 so as to be vertically movable. doing. A limit switch 40 is attached to the rear of the upper end of the rack gear 39, and a piston 41 is fixed to the lower end thereof. The piston 41 covers the upper part of the greasing tank 31,
Can slide up and down along the side wall.

The grease 42 is filled in the greasing tank 31, and a greasing port 43 is provided on the lower side of the greasing tank 31. A greasing pipe 45 is connected to the greasing port 43, and a swing bearing greasing nozzle 4 is provided at the tip of the greasing pipe 45.
7, 47, a turning gear greasing nozzle 49, and a swing cylinder spindle greasing nozzle 50 are connected to the nozzles 47, 47, 49, 5
The grease 42 is discharged from 0 to supply grease.

A stopper 52 is provided laterally inside the upper end of the greasing tank 31 to prevent the piston 41 from moving upward, and the piston 41
The limit switch 40 is configured to come into contact with a stopper 52 when the limit switch 40 is reached.

As shown in FIG. 2, a manual operation switch 53 for a greasing motor is provided on the operation unit of the revolving unit 5, and the battery 29, the counter switch 22, the greasing motor 35, and the manual operation switch for the greasing motor are provided. 53 are connected by wiring.

Since the present embodiment has the above configuration, the engine
When the operator operates the turning operation manual lever to rotate the pinion gear 12 of the turning gear case 11 with the rotation of 27, the pinion gear 12 meshes with the internal gear 6 and rotates,
Accompanying this, the swing body 5 swings (swings) left and right.
When the revolving unit 5 swings, the projection spring 25 abuts and rotates on the counter lever 23, and the counter switch 22
Counts the number of swings. When the counted number of swings reaches the set number, the counter switch 22 is operated, and the greasing motor 35 is driven for a certain time.

The rotation of the motor pinion 36 of the greasing motor 35
The power is transmitted to the rack gear 39 via the reduction gear 37, and moves the rack gear 39 and the piston 41 downward. Piston 41
As the grease 42 moves downward, the grease 42 receives pressure, is extruded from the greasing port 43, passes through the greasing pipe 45, the swing bearing greasing nozzles 47, 47, the swing gear greasing nozzle 49, and the swinging greasing nozzle 49. Discharged from the cylinder support greasing nozzle 50. When the greasing motor 35 is driven for a certain period of time, the drive is stopped by the counter switch 22 and the nozzle of the grease 42 is stopped.
The discharge from 47, 47, 49, 50 is also stopped.

When the operator operates the greasing motor manual operation switch 53, the greasing motor 35 is driven, and the grease 42 is discharged from the nozzles 47, 47, 49, and 50. When the operator releases the greasing motor manual operation switch 53, the greasing motor 35 stops driving, and the nozzles 47, 47, 49, 5 of the grease 42 are stopped.
Discharge from 0 is also stopped.

Further, when the rack gear 39 and the piston 41 move downward by the rotation of the greasing motor 35 and the limit switch 40 abuts on the stopper 52, the operator is notified that the grease 42 of the greasing tank 31 is empty. Recognize it with a lamp, buzzer, etc., and the greasing motor 35 rotates
The piston 39 and the piston 41 move upward, the piston 41 comes into contact with the stopper 52, and the driving of the greasing motor 35 is stopped.

In addition, since a predetermined portion of the revolving unit 5 is automatically lubricated for a certain period of time based on the number of swings of the revolving unit 5, it is possible to easily lubricate even an internal portion of the revolving unit 5 that is difficult to lubricate manually. And it is possible to effectively supply grease while rotating the rotating body 5.

In addition, instead of the judgment by the operator, when the number of swings of the revolving unit 5 reaches the set number, a fixed amount of oil is automatically supplied. Therefore, the oil can be supplied at an optimum frequency and in an appropriate amount. Troubles due to judgment errors and operation errors do not occur.

In addition, since the revolving body 5 is turned by one operator and the greasing is automatically performed, a person for greasing work is not required, and danger in greasing work can be avoided. can do.

Also, when the grease 42 of the greasing tank 31 becomes empty,
Since the operator is automatically notified by a lamp, a buzzer or the like, it is not necessary to frequently fill the grease 42 more than necessary.

When the operator operates the greasing motor manual operation switch 53, the greasing can be arbitrarily and freely performed at the time of greasing according to the operator's judgment.

Further, when the operator operates the greasing motor manual operation switch 53, it is possible to intentionally lubricate each part at once when disassembling and adjusting the parts.

In the above embodiment, the number of swings of the swing body 5 is detected. However, instead of this, the number of times of operation of the swing operation manual lever may be detected.

[Brief description of the drawings]

FIG. 1 is a plan view of a small construction machine to which the present invention is applied, and FIG. 2 is a side view thereof. DESCRIPTION OF SYMBOLS 1 ... Work vehicle (small construction machine), 2 ... traveling device (crawler traveling device), 3 ... machine body, 5 ... revolving body, 22 ... greasing control means (counter switch), 23 ... counting means (Counter lever), 35: Greasing means (greasing motor), 41: Greasing means (piston), 45: Greasing means (greasing pipe), 47, 49, 50: Greasing means ( nozzle).

Claims (1)

(57) [Scope of request for utility model registration] 1. A work vehicle comprising a revolving body mounted on a body supported by a traveling device so as to be able to turn left and right, a greasing means for supplying grease to a predetermined portion of the revolving body, and an operation of a turning operation lever. Counting means for counting the number of swings of the revolving body based on the following, and greasing control means for operating the greasing means for a predetermined time when the count by the counting means reaches a set value. Automatic greasing equipment for working vehicles.