JP2559229Y2 - Greasing structure of work vehicle - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a greasing structure for a working vehicle such as a hydraulic shovel.

[0002]

2. Description of the Related Art
This type of working vehicle such as a hydraulic shovel has movable parts such as a swivel bearing mechanism for rotatably supporting the swiveling part and a connecting part of a swing cylinder for forcibly swinging the working part left and right. It is necessary to lubricate the grease periodically because there is a risk of malfunction or wear due to friction. However, in the past, since greasing work was performed with a grease gun etc. for each greasing point to be dispersed, troublesome work such as having to get on and off the machine during greasing work occurred, and the workability was inferior. Atsuta.
Therefore, as shown in FIG. 9, it has been proposed that the greasing port communicated with each greasing point is centrally arranged at one place to facilitate the greasing work. Since the opening is arranged on the side of the swivel portion which is separated from the swivel bearing mechanism and the swing cylinder connecting portion, the hose member for connecting the greasing port to the greasing point becomes particularly long, so that cost increase can be caused. In addition, the notch formed in the side cover on the side surface of the swivel portion to expose the greasing port has a disadvantage that the appearance is impaired, which is a problem.

[0003]

SUMMARY OF THE INVENTION The present invention has been conceived in view of the above circumstances and has an object to provide a greasing structure for a working vehicle that can eliminate these disadvantages. A working vehicle having a swing cylinder, which swings the working unit from side to side, and swingably connected to a swing unit that is swingably supported via a swing bearing mechanism above the running unit; On the floor surface of the control section provided in the turning section, a turning bearing greasing port communicated with a turning bearing mechanism lubrication position located almost immediately below, and a swing member connecting section lubrication position via a hose member. The present invention is characterized in that a communication with a swing cylinder greasing port that is communicated is concentrated. And the present invention is
According to this configuration, not only the greasing work is facilitated, but also the hose member is shortened as much as possible to reduce the cost, and further, the appearance is reduced by the cutout for the greasing port. The inconvenience that is impaired can be eliminated.

[0004]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a hydraulic shovel, and the hydraulic shovel 1 includes a crawler-type traveling unit 2 and the traveling unit 2.
And a working part 4 connected to a front end of the turning part 3 and the like. Each of the parts is a power of an engine 5 mounted on the turning part 3. , And these basic configurations are all conventional.

Reference numeral 6 denotes a slewing bearing provided between the running part 2 and the slewing part 3.
Is formed with a plurality of balls 9 interposed between an inner race 7 fixed to the traveling section 2 side and an outer race 8 fixed to the turning section 3 side.
An internal gear 7a meshed with the turning gear 10 on the turning portion 3 side is formed on the inner peripheral surface of the turning gear 3a. That is, the revolving gear 10 meshing with the internal gear 7a is rotated by the power of the hydraulic motor 12 transmitted through the revolving gear case 11, and the rotary valve 13 is kicked by the rotation to kick the internal gear 7a. Swiveling part 3 based on the rotational movement around
Is turned with respect to the traveling unit 2. Further, in the revolving bearing 6, a greasing path is provided to greasing the housing portion of the ball 9, but the greasing path of this embodiment is formed so as to extend from the upper surface of the outer race 8 to the inner peripheral surface. It is formed by a substantially L-shaped greasing hole 8a provided.

[0006] On the other hand, reference numeral 14 denotes a swing table which is integrally assembled to the bottom of the revolving portion 3. The swing table 14 is formed in a substantially isosceles triangular shape so that the front end top projects forward from the revolving portion 3. A swing post 15 for connecting the working part 4 is supported on the top of the front end protruding from the turning part 3 so as to be swingable left and right. A bracket protruding from a side part of the swing post 15 is provided. Part 15
A swing cylinder 16 for swinging the working unit 4 left and right based on the expansion and contraction operation is interposed between the bracket a and the bracket 14 a protruding from the rear end of the swing table 14. The bracket 14a supports a boss 16a formed at the base end of the swing cylinder 16 via a connecting pin 17 so as to be swingable right and left. Therefore, the bracket 14a and the connecting pin 17 are connected to each other. A greasing path is provided to supply grease to the sliding portion, but the greasing path of the present embodiment is formed by a greasing hole 16b drilled from the outer peripheral surface to the inner peripheral surface of the boss portion 16a. Is formed.

Further, reference numeral 18 denotes a cockpit provided in the turning section 3, and a floor 19 formed in front and below the cockpit 18 has a plurality of greasing ports 20, 21, 22 in an upward opening posture. And are concentratedly arranged in parallel. And each greasing port 2
0, 21 and 22 are the internal gear 7a of the slewing bearing 6 and the greasing hole 16 of the swing cylinder 16 at the greasing position.
b and the greasing holes 8a of the slewing bearing 6, respectively, but since the greasing ports 20 and 22 are located immediately above the greasing position, pipe members 20a and 22a for fixing the greasing ports are provided. Is extended downward as it is to communicate with the greasing position, while the greasing port 21 is connected to the greasing hole 16 b of the swing cylinder 16 via a flexible hose member 23.
Is communicated to. 19a is a greasing port 20, 21, 2
The notch 19a is opened in the floor 21 so as to expose the base 2, and the notch 19a is always closed by a mat (not shown) laid on the floor 19. .

In the embodiment of the present invention constructed as described above, the internal gear 7a of the slewing bearing 6, the greasing hole 16b of the swing cylinder 16 and the greasing hole 8a of the slewing bearing 6 need to be periodically lubricated. Is the floor 19 of the cockpit 18
Are connected to the greasing ports 20, 21 and 22, which are centrally located, so that lubrication to these places can be performed very easily at one place while riding, without the trouble of getting on and off the aircraft. In particular, the internal gear 7a of the slewing bearing 6 can be greased uniformly by performing the greasing operation while turning the turning part 3 while riding, and as a result, Workability during greasing work can be significantly improved.

In addition, the positions where the greasing ports 20, 21, and 22 are concentrated are located immediately above the internal gear 7a of the turning bearing 6 and the greasing hole 8a. Is separated from the slewing bearing 6 and the swing cylinder 16 and the special hose member 23
Does not become long, so that the hose member 2
3, the required length can be greatly reduced, and significant cost reduction can be achieved.

Further, the notch 19a for exposing the greasing ports 20, 21 and 22 can solve the inconvenience of being exposed to the outside of the fuselage and impairing the appearance.
Is covered with mats laid on the floor 19, so that a dedicated cover member is not required.

Further, since the greasing ports 20, 21, and 22 are arranged in a posture that opens upward, the greasing gun is pressed against the greasing ports 20, 21, and 22 using the weight of the grease gun. Therefore, workability can be greatly improved as compared with a method in which greasing is performed while pressing a grease gun from the side.

[0012]

In summary, since the present invention is configured as described above, the present invention includes a swing bearing mechanism for swingably supporting the swing portion and a swing cylinder for swinging the working portion from side to side. However, the lubrication points of the swing bearing mechanism and the swing cylinder connecting part are respectively communicated with the greasing ports arranged centrally on the floor surface of the control unit, and therefore, the operator is in a state where he / she is riding. Thus, the greasing operation for the swing bearing mechanism and the swing cylinder connecting portion can be performed, and the workability in the greasing operation can be significantly improved.

In addition, since the greasing port is arranged near the greasing position of the swing bearing mechanism, the hose is arranged at a position farther from the swing bearing mechanism and the swing cylinder connecting portion than in the conventional hose. Effective cost reduction can be achieved by greatly shortening the members.

Further, even if a notch for exposing the temporary greasing port is formed in the floor of the control unit, the notch is not exposed to the outside of the machine body, so that the appearance is impaired as in the prior art. There is also an advantage that the notch can be easily covered by using an existing mat or the like laid on the floor surface, so that a dedicated cover member can be eliminated.

[Brief description of the drawings]

FIG. 1 is a plan view of a hydraulic shovel.

FIG. 2 is a side view of the same.

FIG. 3 is a front view of a turning section.

FIG. 4 is a plan view of the revolving frame.

FIG. 5 is a side view of the same.

FIG. 6 is a sectional view of a slewing bearing.

FIG. 7 is a vertical sectional view of a turning gear case.

FIG. 8 is a vertical sectional view of a turning gear case.

FIG. 9 is a plan view of a main part showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hydraulic shovel 2 Running part 3 Revolving part 4 Working part 6 Revolving bearing 16 Swing cylinder 18 Pilot seat 19 Floor part 20 Greasing port 21 Greasing port 22 Greasing port 23 Hose member

Claims (1)

(57) [Scope of request for utility model registration] 1. A work travel in which a swing cylinder, which swings a working unit from side to side, is swingably connected to a swivel part which is swingably supported via a swivel bearing mechanism above the running part. In the vehicle, a turning bearing greasing port communicated with a greasing position of a turning bearing mechanism located substantially directly below a floor surface of a control section provided in the turning section, and a swing cylinder connecting section via a hose member. A greasing structure for a working vehicle, wherein a greasing port for a swing cylinder communicated with a greasing position is centrally arranged.