JPS587193Y2 - Grease injection device for work equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to a lubricant supply device that is attached to a tractor body so that it can be raised and lowered freely, and that uses the lifting and lowering movements of the working equipment to cover the working equipment. A lubricant such as grease is supplied to the lubricating part.

For work machines equipped with rotating shafts, etc., it is necessary to inject grease into the bearings, etc., but conventionally, grease was injected using a grease gun, so when there are many places to inject grease, it is extremely difficult to inject grease. It was very complicated.

Particularly in the case of mid-mounted rotary cutters, etc. that are attached to the lower abdomen of the tractor body, the rotation axis is located below the tractor body, so it is difficult to inject grease due to the position, and it is difficult to inject grease. This could lead to burn-in accidents.

The present invention eliminates such conventional drawbacks, and is characterized by the following features: In a working machine that has a lubricated part and is attached to a tractor body in a manner that allows it to be moved up and down and is detachably attached to the body of the tractor.
A lubricant supply pump that supplies lubricant to a lubricated part is provided on the lifting frame side of the working machine, and the lubricant supply pump includes an actuated member that operates the pump by relative movement downward. An actuating member that engages with the actuated member and relatively moves the actuated member downward when the lifting frame is raised is provided on the upper side of the actuated member in the lifting direction, and the actuating member is connected to the actuated member. The main feature is that the position can be freely changed and fixed between an operating position in which it engages and a release position in which it does not engage.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
In the figure, 1 is a tractor body, which has front wheels 2 and rear wheels 3.

4 is a rotary cutter, which includes a cutter frame 5 shown as an elevating frame as shown in FIG. The cutter frame 5 has a front cover 8, a side cover 9, and a rear cover 10 on its peripheral edge, and the cutter frame 5 has a pair of left and right blades. ring mechanism 1
The lift arm 13 is attached to the lower abdomen of the tractor body 1 via the wire 12 so as to be able to rise and fall freely.
It is said that it can be driven up and down.

As shown in FIG. 3, the link mechanism 11 includes a mounting base 14 removably attached to the lower abdomen of the tractor body 1, and a pair of front and rear links pivotally supported at both left and right ends of the mounting base 14 so as to be swingable back and forth. 15.16, a connecting link 1T that connects the intermediate part of each link 15.16 back and forth, and each link 15
．． 16 and a mounting plate 18 of the cutter frame 5. The wire 12 is connected to the links 16, respectively.

Each rotary shaft 6 is connected to the rear end of the tractor body 1 via a winding transmission mechanism 24, which is made up of a pulley 21 at the upper end and a belt 22 hooked thereto. is connected to the rear PTO shaft of the
It can be driven by the TO axis.

25 is a grease tank shown as a lubricant tank attached to one end of the cutter frame 5 in the lateral direction, and 26 is a grease injection pump shown as a plunger type lubricant supply pump attached to the side of the grease star/liber 25. , at the upper end of the Pushinger 27 there is a horizontal shaft 28 as shown in FIG.
A roller 29, shown as an actuated member, is pivotally supported by the injection pump 26, and the injection pump 26 is actuated by an actuating member 30 when the cutter frame 5 is raised.

The tank 25 and the pump 26 are provided to the side of the mission case of the tractor body 1 and below the front of the step 31.

The discharge port of the injection pump 26 is communicated with a bearing portion shown as a lubricated portion of each rotating shaft 6 via a pipe 32 fixed on the frame 5 of the cutter 7 .

The actuating member 30 is configured in an L-shape as shown in FIG. 4, and is rotatably supported on the connecting link 17 by a bolt 33 and is pressed toward the connecting link 17 by a coil spring 34. The housing connecting link 17 is provided with a stopper 35 for fixing the actuating member 30 in an operating position where it can freely abut and engage with the roller 29 and a released position where it does not engage.
36.37 are provided.

Reference numeral 38 denotes a gauge member for regulating the cutting height, which is provided at both lateral ends of the cutter frame 5 so as to be height adjustable.

In the above configuration, when mowing the lawn, etc., the cutting height is first set by the gauge member 38, and then each rotating shaft 6 and the cutting blade body 7 are rotated by the PTO shaft via the winding transmission mechanisms 23 and 24. After that, lift arm 13 lifts the cutter.
The entire frame 5 is lowered to ground the gauge member 38, and the tractor body 1 is driven forward.

Then, by rotating each cutting blade body 7, the lawn or the like on the ground can be successively cut to a predetermined height as the tractor body 1 moves forward.

When moving the cutting place, rotate the lift arm 13 in the upward direction to pull the wire 12 in the direction of the arrow a, and use the bending action of the link mechanism 11 to move the cutter frame 5.
The entire side is raised, but at this time, infusion pump 2
6 is mounted on the cutter frame 5, so when the cutter frame 5 rises, the roller 29 at the tip of the plunger 27 of N is pressed by the actuating member 30, the injection pump 26 is activated, and the grease in the tank 25 is drained. Inject into each bearing part via pipe 32.

In this case, since the actuating member 30 is provided on the connecting link 11, there is a relative movement in the longitudinal direction between the actuating member 30 and the injection pump 26, but the amount of relative movement is such that the actuating member 30 moves against the tractor body 1 etc. It is smaller than when it is fixed, and a roller 29 is provided at the tip of the plunger 27 so that the roller 29 rolls against the operating member 30, so the plunger 27 can move smoothly in the vertical direction. It slides.

If the grease is not injected sufficiently by simply raising and lowering the cutter frame 5 during operation, the cutter frame 5 may be raised and lowered several times in succession to inject the grease.

If it is not necessary to inject grease, pull the actuating member 30 in the direction of the arrow shown in FIG. 4 against the coil spring 34 to release it from the stopper 35.
When the infusion pump 2 is rotated 90 degrees and engaged between the stoppers 36 and 37, the actuating member side becomes the operation release position.
6 will no longer work.

Therefore, unnecessary grease injection beyond the required amount can be prevented.
Economical.

When the rotating shaft 6 is supported by a bearing 39 as shown in FIGS. 5 and 6, if a concave groove 40 is formed in the inner peripheral surface of the bearing 39 in a fine direction, the injected grease will last longer. , it can also distribute the grease evenly.

As described in detail in the embodiments above, according to the present invention, the lubricant supply pump is actuated by the actuating member when the elevating frame of the working machine is raised and lowered, thereby lubricating the lubricated parts of the working machine. This makes it possible to automatically supply lubricant during work, and if there is a special need to supply lubricant, all you have to do is raise and lower the work equipment several times in a row. Therefore, lubricant supply is much easier than in the past, and seizures caused by forgetting to supply the lubricant can be completely prevented.

In particular, in this invention, the lubricant supply pump is installed on the lifting frame side of the work equipment, so even though the work equipment can be raised and lowered from the tractor body and can be attached and detached, the lubricant supply piping is In addition, the work implement can be easily attached to and detached from the tractor body in the same way as in the conventional method.

Further, the lubricant retention pump is provided with an actuated member that operates the pump by relative movement downward, and an actuation member that moves the actuated member relatively downward when the elevating frame is raised. Since it is installed above the actuated member in the vertical direction, there may be manufacturing errors in the actuated member or actuating member.
Even if the placement positions of both of the above are slightly shifted from the normal placement positions, the manufacturing errors and positional deviations mentioned above can be absorbed, and even in the above cases, the lubricant supply pump can be reliably supplied when the lifting frame is raised. can be operated.

Furthermore, by fixing the actuating member in the release position after sufficient lubricant has been supplied, it is possible to prevent unnecessary oversupply of lubricant beyond the necessary amount, which is an economical advantage. play.

[Brief explanation of drawings]

Fig. 1 is a side view showing an embodiment of the present invention, Fig. 2 is an enlarged plan view of its main parts, Fig. 3 is an enlarged side view of the link mechanism, and Fig. 4 is A-A in Fig. 3. 5 is a partially cutaway side view showing another embodiment, and FIG. 6 is an enlarged view of FIG.
-B is an enlarged view of the arrow. 1... Tractor body, 4... Rotary cutter, 5... Cutter frame, 6...
... Rotating shaft, 11 ... Link mechanism, 13--
----- Lift arm, 25... Grease tank, 26... Grease injection pump, 27...
...Plunger, 30...Operating member.

Claims (1)

[Scope of utility model registration request] In a work machine that has a lubricated part and is mounted on a tractor body so that it can be raised and lowered and is detachably attached, a lubricant supply pump that supplies lubricant to the lubricated part is provided on the lifting frame side of the work machine. The lubricant supply pump is provided with an actuated member that operates the pump by relative movement downward, and engages with the actuated member when the lifting frame is raised to move the actuated member downward relatively. The actuating member to be moved is provided above the actuated member in the vertical direction, and the actuating member is provided so as to be freely changeable and fixed between an operation position in which it engages with the actuated member and a release position in which it does not engage. Lubricant supply device for work equipment.