JPH08145284A - Greese feeding device - Google Patents

Abstract

PURPOSE: To be free from various types of limitation upon operation of mannual feeding of greese to improve workability with a simple structure for reduction of production cost in a greese feeding device for a civil construction or building work vehicle such as a power shovel car requiring both automatic and mannual greese feeding work. CONSTITUTION: Between a pump device 1 and a distribution valve 3 a dividing body 7 is arranged for communicating a main line 2 with a distribution valve line 4 and a greese gun line 6 connected to a mannually feeding greese gun 5. The body 7 is provided with an opening or closing mechanism having a valve body 81 for opening or closing the line 4 and an operation body 82 which closes the line 4 when the gun 5 is used and operates the valve body 81 in linkage with the mounting or demounting of the gun 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention applies a lubricant such as grease to a lubricated portion of a civil engineering construction vehicle such as a crane truck or a power shovel car that requires both automatic and manual lubrication. For a greasing device.

[0002]

2. Description of the Related Art Generally, a power shovel car which is a civil engineering construction vehicle supports a boom in a swing structure having a cockpit so that the boom can swing up and down, and also supports an arm at the tip end side of the boom so that the boom can also swing vertically. A bucket is supported at the tip of the arm so that it can swing up and down.

By the way, the greasing of the connecting portion between the revolving structure and the boom and the connecting portion between the boom and the arm is relatively easy by mounting pipes and hoses for greasing in the boom and arm. In addition, since there is no risk of dirt and sand being applied to these hoses and there is no problem in terms of durability, it is possible to automatically lubricate these lubricated parts. The lubrication area around the bucket has a problem in durability because even if the hose is attached, the lubrication area at the connection between the bucket and the arm is constantly exposed to dirt and sand during excavation work and loading work. Have difficulty in automatic greasing.

Therefore, normally, automatic lubrication is applied to the lubricated parts at both ends of the boom, and the lubricant is manually applied to the lubricated parts around the bucket.

As a greasing device capable of performing both the automatic greasing operation and the manual greasing operation as described above, for example, one disclosed in Japanese Utility Model Publication No. 6-23837 has been known in the past. As shown in FIG. 4, the one disclosed in this publication is provided with a pump C which is driven by a motor A and communicates with a tank B loaded with a lubricant such as grease, and a main pipe D extending from the pump C. The first greasing line E and the second greasing line F are connected in parallel, the first solenoid valve G and the parent distribution valve H are connected to the first greasing line E, and the parent distribution valve H Is connected to a plurality of child distribution valves I that automatically lubricate various lubrication parts of a civil engineering construction vehicle or the like via a plurality of branch lines E1, and a second solenoid valve J and an accumulator are connected to the second greasing line F. K and the connector L are connected, and the flexible hose M is connected to the connector L. It is to connect the grease gun N to.

In the vicinity of the parent distribution valve H, there is provided a cycle switch P which operates when the indicator rod O protruding from the parent distribution valve H is advanced by a predetermined length.
Second solenoid valve J and accumulator K in the greasing line F
While a pressure switch Q is interposed in the intermediate portion between and, the cycle switch P and the pressure switch Q are connected to the input side of the control device R, and the motor A and the above-mentioned motor are connected to the output side of the control device R. The solenoid valves G and J are connected to each other.

By operating a start switch installed in the cockpit of a civil engineering construction vehicle or the like, a drive command is output from the control device R to the motor A, and the drive command is output via the motor A accordingly. The pump C is rotationally driven, and the lubricant in the tank B is pumped up and supplied to the main pipe D.
Further, only the first solenoid valve G is opened based on a command from the control device R, the lubricant in the main pipe D is supplied to the parent distribution valve H via the first greasing line E, and this parent It is sent from the distribution valve H to each child distribution valve I through each of the branch lines E1 and is automatically lubricated from each child distribution valve I to each lubricated portion of a civil engineering construction vehicle or the like.

Further, at the time of automatic lubrication as described above, the metering piston S incorporated in the parent distribution valve H operates a predetermined number of times, and the indicator rod O connected to the metering piston S reciprocates a predetermined number of times. When the cycle switch P is operated, the first electromagnetic valve G is closed in response to a command from the control device R, and automatic lubrication to each lubrication part is stopped.

After the closing operation of the first solenoid valve G,
The second electromagnetic valve J is opened based on a command from the controller R, and the lubricant in the main pipe D is supplied from the second greasing line F to the accumulator K to accumulate pressure. Then, when the internal pressure of the second greasing line F reaches a predetermined pressure, that is, when the lubricant having a predetermined pressure is accumulated in the accumulator K, the pressure switch Q is activated and the detection signal is detected. The second electromagnetic valve J is output to the control device R, and the second electromagnetic valve J is closed according to a command from the control device R, and the rotation of the motor A is stopped.

As described above, the pressure of the lubricant is automatically accumulated in the accumulator K after the automatic lubrication to each of the lubricated portions is completed, and after the accumulation of pressure in the accumulator K is completed, the lubrication of the inside thereof is performed. The agent can be manually lubricated from the grease gun N to the manual lubrication point via the flexible hose M. When the internal pressure of the accumulator K decreases due to the manual lubrication from the grease gun N, the lubricant is accumulated in the accumulator K after the next automatic lubrication.

[0011]

However, in the above greasing device, after automatically lubricating each lubricated portion of the civil engineering construction vehicle or the like, the lubricant is supplied to the accumulator K side,
Only after the lubricant is accumulated in the accumulator K at a predetermined pressure, manual lubrication by the grease gun N becomes possible. Therefore, the lubricant is accumulated in the accumulator K at a predetermined pressure. Until then, manual lubrication cannot be performed.

Therefore, the workability is extremely poor due to various restrictions on the manual greasing work by the grease gun N, and moreover, in the greasing device, it is necessary to switch between automatic greasing and manual greasing. The use of the expensive two solenoid valves G and J and the accumulator K increases the cost, and the cycle switch P and the pressure switch Q are required to switch and control the solenoid valves G and J. As a result, the overall configuration became complicated and the cost increased.

The object of the present invention is to provide an even before automatic greasing.
The point is that manual greasing can be performed freely to improve workability, and the manufacturing cost can be reduced with a simple structure.

[0014]

In order to achieve the above object, the invention according to claim 1 is connected to a pump device 1 having a greasing and depressurizing function and a main pipe 2 extending from the pump device 1. In a greasing device including a distribution valve 3, a main body 2 is connected between a distribution valve line 4 and a grease gun line 6 connected to a manual grease gun 5 between the pump device 1 and the distribution valve 3 in the main pipe 2. A branch body 7 for communicating is provided, and a valve body 81 for opening and closing the distribution valve line 4 is provided in the branch body 7, and the valve body 81 is connected to the manual feed grease gun 5
When operating the grease gun 5,
The opening / closing mechanism 8 having the operating body 82 for closing the distribution valve line 4 is provided.

According to a second aspect of the present invention, the operating body 82 is provided.
Is provided in the manual grease gun 5.
The operation is interlocked with the attachment / detachment of the grease gun port 73 provided on the branch body 7, and the distribution valve port 72 of the branch body 7 is closed when the grease intake port 55 is attached to the grease gun port 73. is there.

According to a third aspect of the present invention, the operating body 82 is provided.
In addition, the oil intake 55 of the manual grease gun 5 is provided with an abutting portion 82b that abuts the flange portion 50 extending outward in the radial direction.

According to a fourth aspect of the present invention, the operating body 82 is provided.
Is provided with a supporting portion 89 for supporting the manual grease gun 5, and is operated in association with attachment / detachment of the manual grease gun 5 to / from the supporting portion 89. When the grease gun 5 is detached from the supporting portion 89, The distribution valve port 72 of the branch body 7 is closed.

According to a fifth aspect of the present invention, a hook portion for suspending and supporting the grease gun 5 on a support portion 89 of the operating body 82 via a mounting portion 58 provided on the grease gun main body 53 of the manual feed grease gun 5. 89a is provided.

According to a sixth aspect of the present invention, in the branch body 7,
A switch 9 for stopping the driving of the pump device 1 is provided in association with the operation of the opening / closing mechanism 8 for opening / closing the distribution valve line 4.

[0020]

According to the first aspect of the present invention, the valve body 81 distributes the operating body 82 of the opening / closing mechanism 8 provided on the branch body 7 by the attachment / detachment operation of the manual grease gun 5 to the branch body 7. By operating the valve line 4 to open, the distribution valve line 4 is communicated with the pump device 1, and when automatically lubricating a lubricant such as grease to each automatic lubricating location of a civil engineering construction vehicle or the like, A lubricant such as grease supplied from the pump device 1 to the main pipe 2 is automatically lubricated to each automatic lubrication location through the distribution valve line 4 and the distribution valve 3.

After the automatic greasing work is completed,
Due to the depressurizing function of the pump device 1, the lubricant is returned from the distribution valve 3 side to the pump device 1 side via the distribution valve line 4 and the main pipe 2 to perform depressurization.

Further, when the lubricant is manually applied to the manual lubrication portion, the operating body of the opening / closing mechanism 8 provided in the branch body 7 is attached and detached by the detaching operation of the manual grease gun 5 to the branch body 7. 82 is operated so that the valve element 81 closes the distribution valve line 4, so that the lubricant supplied from the pump device 1 to the main pipe 2 flows only to the grease gun line 6 and from the grease gun 5. Manual lubrication is manually lubricated.

As described above, the distribution valve line 4 is linked with the detaching operation of the grease gun 5 with respect to the branch body 7.
Since the structure is such that the distribution valve line 4 is closed only when the grease gun 5 is manually lubricated, both operations of automatic lubrication to each automatic lubrication location and manual lubrication by the grease gun 5 are performed. The grease gun 5 can be manually and easily lubricated by the branching body of the grease gun 5 either before or during the automatic lubrication or during the automatic lubrication. All of the lubricant sent from the pump device 1 can be sent to the grease gun line 73 simply by performing the attaching / detaching operation with respect to 7. Therefore, the grease gun line 73 can be freely and immediately subjected to no restrictions. Since the grease gun 5 can be used for manual lubrication, the workability in performing the manual lubrication can be remarkably improved, and moreover, a plurality of expensive solenoid valves, etc., as in the conventional case, can be used. Since no essential, it can be inexpensive production cost as a simple configuration.

Further, in the second aspect of the present invention, the grease gun port 73 provided in the branch body 7 of the oil intake 55 provided in the manual grease gun 5 is provided with the operating body 82.
When the grease intake port 55 is attached to the grease gun port 73, the branch body 7 is operated.
Since the distribution valve port 4 is closed, the grease gun 5 is detached from the grease port 73 of the branch body 7 when manual greasing is not performed, and when the manual greasing is performed, By attaching the oil intake port 55 of the grease gun 5 to the grease gun port 73, the distribution valve port 72, that is, the distribution valve line 4
It is possible to replenish the entire amount of the lubricant sent from the pump device 1 by closing.

As a result, manual grease supply by the grease gun 5 can be easily performed, but when the grease gun 5 is not used, the grease gun 5 is detached from the branch body 7 and stored in another place. Thus, it is possible to prevent the grease gun 5 from interfering with work by a civil engineering construction vehicle or the like, and prevent the grease gun 5 from being damaged during work.

Further, in the invention according to claim 3, in the invention according to claim 2, the operating body 82 is provided with a flange portion 50 extending outward in the radial direction at the oil intake port 55 of the manual grease gun 5. Since the contact portion 82b for contacting is provided,
At the same time as mounting the oil intake 55 of the grease gun 5 on the branch body 7, the flange portion 50 formed on the oil intake 55 pushes the abutting portion 82b of the operating body 82,
Since the operating body 82 can be operated so that the valve body 81 closes the distribution valve line 4, the distribution valve line 4 can be closed only by mounting the grease gun 5 on the branch body 7. The workability when performing manual greasing can be further enhanced.

Further, in the invention according to claim 4, a support portion 89 for supporting the manual grease gun 5 is provided on the operating body 82, and the support portion 8 of the manual grease gun 5 is provided.
Since the distribution valve port 72 is closed when the grease gun 5 is detached from the support portion 89 by operating in tandem with the attachment / detachment to / from the grease gun 5, the grease gun 5 is not operated when manual greasing is not performed. The distribution valve line 4 can be communicated with the pump device 1 only by supporting it on the supporting portion 89, and when the grease gun 5 is used for manual lubrication, the grease gun 5 is detached from the supporting portion 89. Since the distribution valve port 72 can be closed only by doing so, the workability at the time of manual lubrication by the grease gun 5 can be enhanced.

Further, in the invention described in claim 5, in the invention described in claim 4, the support portion 89 of the operating body 82 is provided.
The grease gun main body 53 of the manual grease gun 5 is
Since the hook portion 89a for suspending and supporting the grease gun 5 is provided via the mounting portion 58 provided in the above, when the grease gun 5 is not used, the grease gun 5 may be suspended on the hook portion 89a. The storage location is not bothersome and the workability is good.

Further, in the invention according to claim 6, the branch body 7 is provided with the switch 9 for stopping the driving of the pump device 1 in association with the operation of the opening / closing mechanism 8 for opening / closing the distribution valve line 4. When the grease gun 5 is used for manual lubrication, the distribution valve line 4 of the opening / closing mechanism 8
The pump device 1 that has been stopped can be driven in conjunction with the closing operation of the pump device 1. After the manual lubrication is finished, the pump device 1 can be stopped by the opening operation of the distribution valve line 4. The start / stop control of the pump device 1 by the switch 9 can be automatically performed. Therefore, in order to drive the pump device 1 at the time of performing the manual greasing, the grease gun 5 is separated from the connecting portion. It is no longer necessary to go to the cockpit of a civil engineering construction vehicle or the like to operate the switch, and the start / stop control of the pump device 1 can be automatically performed only by attaching / detaching the grease gun 5. Workability can be further improved.

[0030]

FIG. 3 shows a power shovel car to which the greasing device of the present invention is applied. The power shovel car is equipped with a revolving structure 33 having a cockpit 32 on a traveling structure 31. 33, a boom 34 is supported to be vertically swingable, an arm 35 is connected to the tip side of the boom 34 to be vertically swingable, and a bucket 36 is supported on the tip side of the arm 35 to be swingable vertically. In addition, the arms 35 and the bucket 36 are connected by a plurality of connecting rods 37, while the first cylinder device 38 is provided between the revolving structure 33 and the boom 34, and the boom 34 and the arm 35 are provided. A second cylinder device 39 is provided therebetween, and a third cylinder device 40 is provided between the arm 35 and the connecting rod 37.
Is intervened.

By operating the boom 34, the arm 35 and the bucket 36 via the cylinder devices 38 to 40, excavation work or loading work on a truck or the like is performed.

In addition, at the connecting portion between the revolving structure 33 and the boom 34, the connecting portion between the boom 34 and the arm 35, the connecting portion between the boom 34 and the arm 35 and the cylinder devices 38 to 40, and the like. The lubrication portion is automatically lubricated from the pump device 1 disposed on the revolving structure 33 via the distribution valve 3, and the supporting portion between the arm 35 and the bucket 36 and the connecting rod 37 provided between them.
The lubrication part around the bucket such as
The manual greasing gun 5 described later is used for manual lubrication.

Therefore, the above-described power shovel car is incorporated with a greasing device capable of both automatic greasing and manual greasing, and this greasing device is configured as shown in FIG. 1, for example. To be done.

That is, in the first embodiment shown in FIG. 1, the pump device 1 has a greasing and depressurizing function, is driven by a motor 11 capable of rotating in forward and reverse directions, and has a piston and cylinder mechanism. Electric pump element 12 with pressurizing mechanism
And a tank 13 connected to the suction side of the pump element 12 and filled with a lubricant such as grease, and a reverse operation of the motor 11 to perform a switching operation via a cam mechanism or the like, and the discharge side of the pump element 12 And a depressurization mechanism 14 including a two-way switching type switching valve for opening the main pipe 2 connected to the tank 13 to the tank 13.

The main pipe 2 connected to the discharge side of the pump element 12 is disposed on the revolving body 33, arm 35, etc. of the power shovel car, and the automatic supply of the arm 35 and the boom 34 is automatic. A plurality of distribution valves 3 for supplying oil to the oil portion 30 are connected.

Further, in the vicinity of the pump device 1, a controller 1 for controlling rotation of the motor 11 in forward and reverse directions.
0 is provided, the motor 11 is normally rotated by a command from the controller 10, and the grease in the tank 13 is fed to the main pipe 2 by driving the pump element 12, and after this greasing work. Is reversely operated by a command from the controller 10 to switch the motor 11 to a depressurizing operation by the depressurizing mechanism 14 and then stopped.
Is opened directly to the tank 13 side for depressurizing work.

Further, the controller 10 is internally provided with a timer for setting a greasing time. During automatic greasing, the controller 10 is set after the time set by the timer has elapsed.
The motor 11 is reversely rotated in response to a command from the above to bring it into a depressurized state, and then stopped.

Further, the pump device 1 includes the main pipe 2
Pressure detector 15 for detecting the internal pressure of the
And a limit switch 16 that is operated based on the pressure detection result by the controller 10. When the limit switch 16 is connected to the controller 10 and the pump element 12 is driven, the main pipe 2 is lubricated. , Regardless of the time set by the timer, when the detector 15 detects that the internal pressure of the main pipe 3 is equal to or higher than a preset predetermined pressure, the output from the limit switch 16 is output via the controller 10. The motor 11
After reversing the pressure and releasing the pressure, it is stopped.

Between the pump device 1 and each distribution valve 3 in the main pipe 2, a distribution valve line 4 for supplying the lubricant in the tank 13 to each distribution valve 3 is provided between the pump device 1 and each distribution valve 3. , The bucket 36 in the power shovel car
A branch body 7 is provided for branching to a grease gun line 6 for supplying grease to a grease gun 5 that is manually fed to a surrounding lubrication site, and the branch valve 7 is provided with the distribution valve line 4 and a manual supply by the grease gun 5. An opening / closing mechanism 8 is provided which is closed during greasing and communicates with the tank 13 when the grease gun 5 is not greasing.

More specifically, in the embodiment of FIG. 1, the branch body 7 has a suction port 71 to which the main pipe 2 communicating with the tank 13 is connected, and a distribution valve to which the distribution valve line 4 is connected. A port 72 and a grease gun port 73 to which the grease gun line 6 is connected are provided, and a valve hole 74 extending in the vertical direction is formed inside the branch body 7 so that the ports 71 to 73 are communicated with each other. There is.

The opening / closing mechanism 8 is provided with the branch body 7.
A first valve body 81 which is arranged to be movable up and down in the valve hole 74 of the first valve body 81 and which can open and close the distribution valve port 72; and a lower side of the first valve body 81 which moves vertically to the valve hole 74. Operation body 82 that is supported so as to vertically move the first valve body 81.
And a second valve body 83 which is provided in the grease gun port 73 of the branch body 7 and which opens and closes the grease gun port 73 in association with the operation of attaching and detaching the oil intake 55 of the grease gun 5 to and from the grease gun port 73. A spring receiving portion 82a is integrally provided at the upper end of the operation body 82 that projects into the valve hole 74, and the other end of the operation body 82 is exposed to the outside of the grease gun 5 to be described later. An L-shaped contact portion 82b that contacts the flange portion 50 is integrally formed.

Further, between the first valve body 81 in the valve hole 74 and the spring receiving portion 82a of the operating body 82,
While interposing the first spring 84, the first spring 8 is provided on the side of the first valve body 81 opposite to the side on which the first spring 84 is provided.
While the second spring 85 having a spring force smaller than that of the second valve body 4 is interposed, the second valve body 83 is always provided on the inner upper side of the branch body 7 of the second valve body 83 on the grease gun port 73 side. A third spring 86 for biasing and holding the grease gun port 73 in a closed state is interposed.

The manual grease gun 5 includes a grease gun main body 53 having a greasing nozzle 51 and a manual operation section 52, and a flexible hose 54 connected to the gun main body 53 to form the grease line 6. And the hose 54
Is provided on the side opposite to the gun body 53 and can be attached / detached to / from the branch body 7 by a one-touch operation, and the grease intake port 55 for taking in a lubricant from the grease gun port 73.
And a joint 56 having

When the grease gun port 73 of the branch body 7 of the joint 56 is attached to the grease intake port 55 of the joint 56, the second valve body 83 is provided at the third position.
The main pipe 2 communicating with the tank 13 is pushed upward against the spring 86 to open the grease gun port 73.
A projection 57 is integrally formed to communicate with the hose 54, that is, the grease gun line 6 side.

Further, the operating body 82 is provided around the outer periphery of the joint 56 when the joint 56 is attached to the branch body 7.
The large-diameter flange portion 5 to be brought into contact with the contact portion 82b provided on the
0 extends radially outward, and the flange portion 50
Abutting against the abutting portion 82b pushes the operating body 82 upward, and the pushing force of the operating body 82 pushes the first valve body 81 upward against the second spring 85. The distribution valve port 72 with the first valve body 81.
The side is closed to close the distribution valve line 4.

Further, the branch body 7 is provided with a switch 9 which is connected to the controller 10 and controls the start / stop of the motor 11 of the pump device 1 when the grease gun 5 manually lubricates. Operation piece 9
1. When the rolling element 92 is attached to 1, and when the joint 56 is attached to the branch body 7, the flange 9 is operated by operating the operation piece 91 via the rolling element 92 to turn on the switch 9. To drive the motor 11, and when the joint 56 is detached from the branch body 7,
By releasing the pushing force applied to the rolling element 92 by the flange portion 50, the switch 9 is turned off and the motor 11 is stopped.

Next, the operation of the above first embodiment will be described. First, when the manual grease supply by the grease gun 5 is not performed, the joint 56 of the manual grease gun 5 is detached from the branch body 7. At this time,
The operation body 82 and the first valve body 81 are positioned on the lower side by the spring force of the second spring 85, and the distribution valve port 72, that is, the distribution valve line 4 communicates with the tank 13 via the main pipe 2. Further, when the joint 56 is disengaged from the branch body 7, the projection 57 provided on the joint 56 is disengaged from the second valve body 83, and the second valve body 83 causes the spring force of the third spring 86. The grease gun port 73 is closed by pushing the grease gun port 73 downward.

Therefore, when the distribution valve port 72 is in communication with the tank 13, a lubricant such as grease is automatically fed to the automatic lubricating portion 30 of the power shovel car, or depressurizing work is performed. And a lubricant such as grease supplied from the tank 13 to the main pipe 2 via the pump element 12 by the normal rotation of the motor 11 provided in the pump device 1 based on a command from the controller 10. However, it is automatically lubricated to each of the automatic lubrication points 30 through the distribution valve line 4 and each of the distribution valves 3.

With the above greasing work, the main pipe 2
When the inside pressure reaches a predetermined pressure, the pressure detector 15 detects the predetermined pressure, and then the limit switch 16 operates to stop the motor 11 based on a command from the controller 10 to a predetermined pressure. Is designed to hold. That is, even if the pressure inside the main pipe 2 near the pump is maintained at a predetermined pressure, when the pressure is gradually transmitted to the end of the distribution valve line 4, the pressure near the main pipe 2 near the pump decreases. Therefore, the limit switch 16 is turned off, the motor 11 is started, the pump element 12 is lubricated, and the motor 11 is stopped when a predetermined pressure is reached.

Then, when the predetermined greasing time set by the timer has elapsed, the motor 11F reversely rotates to switch to the depressurizing operation by the depressurizing mechanism 14, and the distributing valve 3 to the distributing valve line 4 and The lubricant is returned to the tank 13 through the main pipe 2 to perform depressurization, and the motor 11
Is stopped.

On the other hand, when the lubricant is manually lubricated to the manual lubrication portion around the bucket 36 in the power shovel car, the joint 56 of the manual grease gun 5 is attached to the grease gun port 73 of the branch body 7. The projection 57 provided on the joint 56 pushes the second valve body 83 upward while resisting the third spring 86 to open the grease gun port 73, and the flange portion provided on the joint 56. 50 contacts the contact portion 82b of the operating body 82 to push the operating body 82 upward, and the pushing force of the operating body 82 causes the first valve body 81 to move to the second position.
The first valve body 8 is moved upwards against the spring 85.
At 1, the distribution valve port 72, that is, the distribution valve line 4 is closed.

At the same time, the switch 9 is turned on to drive the motor 11 to operate the pump device 1 to pressurize the grease gun line 6 and maintain a state where manual lubrication is always possible.

Therefore, the joint 56 to the branch body 7 is formed.
When the grease gun port 73 is opened and the distribution valve port 72 is closed, the lubricant of the tank 13 is passed through the main pipe 2 from the oil intake 55 of the joint 56 to the hose 54. Since the grease gun line 6 is entirely filled with grease and is constantly in a pressurized state, by operating the manual operating portion 52 of the grease gun 5, the lubricant from the hose 54 is manually fed from the greasing nozzle 51. Immediate manual lubrication of the greasy area.

The operation of attaching the joint 56 to the branch body 7 as described above is performed in a depressurized state where automatic greasing is not performed, that is, the internal pressure of the branch body 7 is set to a low pressure. Since it is always performed in this state, the fitting operation of the joint 56 on the branch body 7 can be performed easily and smoothly.
Further, the detaching operation can be easily performed even in a pressurized state because it is in the detaching direction. As described above, the joint 56 provided on the grease gun 5 is interlocked with the detaching operation with respect to the branch body 7 to distribute the distribution. By opening and closing the valve line 4 and the grease gun line 6 so that these lines 4 and 6 can be automatically switched, automatic lubrication to each of the automatic lubrication points 30 and the grease gun 5 can be performed. Both the operations of manual lubrication to the manual lubrication portion around the bucket 36 can be selectively performed easily, and the manual lubrication by the grease gun 5 is automatically performed through the distribution valve 3. Even before automatic greasing to the greasy portion, by performing the attachment / detachment operation of the joint 56 with respect to the branching body 7, it is possible to perform it freely, efficiently, and immediately without being limited in time. Therefore, it is possible to remarkably improve the workability in the case of performing the manual greasing, and since a plurality of solenoid valves are not required unlike the conventional case, the construction can be simplified and the manufacturing cost can be reduced.

In addition, when the grease gun 5 is not used, the grease gun 5 can be detached from the branch body 7 and stored in another place.
Can prevent the power shovel car from interfering with the work, and can prevent the grease gun 5 from being damaged during the work.

Further, a flange portion 50 extending outward in the radial direction is formed on the joint 56 having the oil intake 55 of the manual grease gun 5, and the operating body 82 is also provided.
Since the abutting portion 82b that abuts the flange portion 50 is provided, the oil intake 55 of the grease gun 5 is attached to the branch body 7, and at the same time, the abutting portion 82b of the operating body 82 is attached to the flange portion 50. Is operated to push the operating body 8
Since the valve body 81 can be operated so that the valve body 81 closes the distribution valve line 4, the distribution valve line 4 can be closed only by mounting the grease gun 5 on the branch body 7. It is possible to further enhance the workability when performing greasing.

Next, the second embodiment will be described. In the second embodiment, the branch body 7 is provided with an intake port 71 to which the main pipe 2 communicating with the tank 13 is connected and a distribution valve port 72 to which the distribution valve line 4 is connected.
At a portion of the branch body 7 facing the suction port 71,
A grease gun port 73 to which the joint 56 of the grease gun 5 is always coupled is provided to form a vertically extending valve hole 74 in the branch body 7 through which the ports 71 to 73 are communicated, respectively. A start / stop switch 9 for driving a motor having an operation piece 91 and a rolling element 92 is provided on the side of the branch body 7 as in the case of the first embodiment.

Further, as the opening / closing mechanism 8, the first
As in the case of the embodiment, a first valve body 81 is arranged in the valve hole 74 of the branch body 7 so as to be movable up and down, and the distribution valve port 72 side of the valve hole 74 can be opened and closed. First valve body 8
1 is provided on the lower side of the first valve body 74 so as to be movable up and down, and has an operating body 82 for vertically moving the first valve body 81, and the valve hole 74 of the operating body 82.
A large-diameter spring receiving portion 82c that abuts the first valve body 81 is integrally provided at the upper end of the inward projection, and the lower surface of the spring receiving portion 82c and the lower end wall portion of the valve hole 74 are provided. A fourth spring 87 that urges the spring receiving portion 82c upward, that is, always urges the first valve body 81 to close the distribution valve port 72, is interposed between and. On the other hand, a fifth spring having a smaller spring force than the fourth spring 87 is provided between the first valve body 81 and the distribution valve port 72 opening side of the valve hole 74.
A spring 88 is interposed.

Further, on the lower side of the operating body 82 projecting outward from the branch body 7, the grease gun body 5 is provided.
By providing a support portion 89 composed of a hook portion 89a capable of locking the attachment portion 58 such as the chain attached to the chain 3, and by fixing the attachment portion 58 of the grease gun body 53 to the hook portion 89a, The operation body 82 is moved downward against the fourth spring 87 by the weight of the grease gun main body 53, that is, the downward movement of the operation body 82 causes the fifth spring 88 to move the first valve body 81. The distribution valve port 4 is separated from the distribution valve port 72 to open the distribution valve line 4,
Further, when the grease gun body 53 is detached from the hook portion 89a, the operating body 82 is moved upward by the biasing force of the fourth spring 87, that is, the first valve is moved along with the upward movement of the operating body 82. By closing the distribution valve port 72 with the body 81, the distribution valve line 4 is closed.

Moreover, a flange portion 90 for operating the switch 9 in association with the attachment / detachment of the grease gun body 53 to / from the hook portion 89a is integrally provided on the upper portion of the hook portion 89a of the operating body 82. When the grease gun main body 53 is attached to the hook portion 89a, the rolling element 9 by the flange portion 90 is attached.
By releasing the pushing force to 2, the switch 9 is turned off to stop the motor 11, and when the grease gun body 53 is detached from the hook portion 89a, the flange portion 90 of the operating body 82 is used. The rolling element 92
By operating the operation piece 91 via, the switch 9 is turned on and the motor 11 is driven.

Next, the operation of the above second embodiment will be described. First, when the manual grease supply by the manual grease gun 5 is not performed, the mounting portion 58 of the grease gun 5 is locked to the hook portion 89a of the operating body 82, and the fourth weight is applied by the weight of the grease gun main body 53. Spring 8
The operation body 82 is moved downward against 7
The first valve element 81 is separated from the distribution valve port 72 by the fifth spring 88 in accordance with the downward movement of the distribution valve line 4
Is communicated with the pump device 1 through the main pipe 2.

Then, in this state, the lubricant is automatically supplied to the automatic greasing portion 30 of the power shovel car, and the grease gun 5 is locked to the hook portion 89a without being used. That is, since the greasing nozzle 51 is maintained in the closed state without operating the manual operating portion 52 of the grease gun 5, the lubricant of the main pipe 2 is automatically lubricated through the distribution valve line 4. The place 30 is automatically lubricated.

On the other hand, when the lubricant is manually lubricated to the manual lubrication portion around the bucket 36 in the power shovel car, the mounting portion 58 of the manual grease gun 5 is removed from the hook portion 89a of the operating body 82. ,
The operation body 82, that is, the first valve body 81 is moved upward by the strong spring force of the fourth spring 87 against the fifth spring 88 by being released from the weight of the grease gun body 53. With the upward movement of 82, the first valve body 81 closes the distribution valve port 72, that is, the distribution valve line 4 side.

By operating the manual operating portion 52 of the grease gun 5 removed from the hook portion 89a, the lubricant in the tank 13 is caused to flow by the pump device 1 through the main pipe 2 into the branch body. It is supplied to the hose 54 connected to the grease gun port 73 of No. 7, and is manually lubricated from the grease nozzle 51 to the manual lubrication location.

According to the above-mentioned structure, when the manual grease gun 5 is detached from the hook portion 89a,
Since the distribution valve line 4 can be opened and closed automatically, both automatic lubrication to the automatic lubrication points 30 and manual lubrication to the manual lubrication points around the bucket 36 by the grease gun 5 can be performed. When the grease gun 5 is used for manual lubrication, the work can be performed selectively and easily.
By simply detaching the grease gun 5 from the hook portion 89a, the distribution valve port 72, that is, the distribution valve line 4 is closed in conjunction with this, and the manual operation portion 52 of the grease gun 5 is operated to supply the grease. Since grease can be manually supplied from the grease nozzle 51, workability at the time of manual grease supply by the grease gun 5 can be improved.

Further, when the grease gun 5 is not used, the grease gun main body 53 may be hung on the hook portion 89a, so that the storage place is not troubled and the workability can be improved.

In addition, in each of the above embodiments, the branch body 7 is provided with the switch 9 having the operation piece 91 and the rolling element 92, and the grease gun 5 in the first embodiment of FIG. On the outer periphery of the joint 56, the joint 5
The flange portion 5 for turning the switch 9 on and off through the rolling element 92 when the 6 is attached to and detached from the branch body 7.
0 is provided, and in the second embodiment of FIG. 2, the switch 9 is turned on / off in association with the attachment / detachment of the grease gun body 53 to / from the hook portion 89a on the upper side of the hook portion 89a of the operating body 82. Since the flange portion 90 is provided, when the grease gun 5 is used for manual lubrication, when the pump device 1 is driven or stopped, the detaching operation of the joint 56 with respect to the branch body 7 or the The hook portion 8 of the grease gun body 53
The start / stop control of the pump device 1 can be automatically performed by operating the switch 9 in conjunction with the attachment / detachment of the motor 9a.
When the switch for driving 1 is installed in the cockpit 32 of the power shovel car remote from the connection part of the grease gun 5, the cockpit 32 is used to operate the switch.
While it was necessary to go to the pump device 1 and to operate the pump device 1 by the above-mentioned configuration, when the grease gun 5 is detached and attached, the pump device 1 can be automatically operated without going to the cockpit 32. The start / stop control can be performed, and the workability can be further improved.

Although the support portion 89 provided on the operating body 82 in the second embodiment is formed by the hook portion 89a, the support portion may be formed by a box-shaped storage portion for storing the grease gun body 53. Alternatively, the grease gun main body 53 may be mounted.

[0069]

As described above, according to the greasing device of the first aspect, the main pipe 2 is provided between the pump device 1 and the distribution valve 3 in the main pipe 2, the distribution valve line 4 and the manual grease. A branch body 7 communicating with the grease gun line 6 connected to the gun 5 is provided, and the branch body 7 is provided with a valve body 81 for opening and closing the distribution valve line 4 and the valve body 81 of the manual feed grease gun 5. The grease gun 5 is provided with an opening / closing mechanism 8 which is operated in association with attachment / detachment and has an operating body 82 which closes the distribution valve line 4 when the grease gun 5 is used.
Since the distribution valve line 4 is closed only when the manual lubrication is performed, both the automatic lubrication to each automatic lubrication point and the manual lubrication by the grease gun 5 can be selectively and easily performed. You can

Moreover, the manual lubrication by the grease gun 5 can be freely performed before and after the automatic lubrication or during the automatic lubrication by simply performing the attachment / detachment operation for the branch body 7 of the grease gun 5. Since all of the lubricant sent from the pump device 1 can be sent to the grease gun line 73, the grease gun 5 can be freely and instantly manually lubricated without restriction. Can be done.

Therefore, the workability in the case of performing the manual greasing can be remarkably enhanced, and a plurality of expensive solenoid valves and the like which are required in the prior art are not required, so that the construction can be simplified and the manufacturing cost can be reduced. Of.

According to the second aspect of the present invention, the oil intake port 5 provided with the operating body 82 in the manual grease gun 5 is provided.
5 is operated in association with the attachment / detachment of the grease gun port 73 provided on the branch body 7, and the distribution valve port 4 of the branch body 7 is closed when the grease intake port 55 is attached to the grease gun port 73. Therefore, when the manual greasing is not performed, the grease gun 5 is connected to the branch body 7.
When the grease port 73 is detached from the grease port 73 and the grease is manually supplied, the grease intake port 55 of the grease gun 5 is attached to the grease gun port 73 so that the distribution valve port 72, that is, the distribution valve line 4 Since the entire amount of the lubricant sent from the pump device 1 can be lubricated by closing the valve, the grease gun 5 can be easily lubricated manually, and when the grease gun 5 is not used, It is possible to remove the grease gun 5 from the branch body 7 and store it in another place, so that the grease gun 5 interferes with work by a civil engineering construction vehicle or the like, and the grease gun 5 is damaged during work. It is possible to prevent it.

According to a third aspect of the present invention, in the second aspect of the invention, the operating body 82 is provided with a flange portion 50 extending outward in the radial direction at the oil intake 55 of the manual grease gun 5. Since the abutting portion 82b is provided so as to abut, the oil intake 55 of the grease gun 5 is attached to the branch body 7 and at the same time, the flange 50 formed in the oil intake 55.
By pushing the contact portion 82b of the operating body 82, the operating body 82 can be operated so that the valve body 81 closes the distribution valve line 4, so that the grease gun 5 is branched. Since the distribution valve line 4 can be closed only by mounting it on the body 7, the workability in manual lubrication can be further enhanced.

In the invention according to claim 4, a support portion 89 for supporting the manual grease gun 5 is provided on the operating body 82, and the support portion 8 of the manual grease gun 5 is provided.
Since the distribution valve port 72 is closed when the grease gun 5 is detached from the support portion 89 by operating in tandem with the attachment / detachment to / from the grease gun 5, the grease gun 5 is not operated when manual greasing is not performed. The distribution valve line 4 can be communicated with the pump device 1 only by supporting it on the supporting portion 89, and when the grease gun 5 is used for manual lubrication, the grease gun 5 is detached from the supporting portion 89. Since the distribution valve port 72 can be closed only by doing so, the workability at the time of manual lubrication by the grease gun 5 can be enhanced.

Further, in the invention described in claim 5, in the invention described in claim 4, the support portion 89 of the operating body 82 is provided.
The grease gun main body 53 of the manual grease gun 5 is
Since the hook portion 89a for suspending and supporting the grease gun 5 is provided via the mounting portion 58 provided in the above, when the grease gun 5 is not used, the grease gun 5 may be suspended on the hook portion 89a. The storage location is not bothersome and the workability is good.

Further, in the invention according to claim 6, the branch body 7 is provided with the switch 9 for stopping the driving of the pump device 1 in association with the operation of the opening / closing mechanism 8 for opening / closing the distribution valve line 4. When the grease gun 5 is used for manual lubrication, the distribution valve line 4 of the opening / closing mechanism 8
The pump device 1 that has been stopped can be driven in conjunction with the closing operation of the pump device 1. After the manual lubrication is finished, the pump device 1 can be stopped by the opening operation of the distribution valve line 4. The start / stop control of the pump device 1 by the switch 9 can be automatically performed. Therefore, the start / stop control of the pump device 1 can be automatically performed only by the attaching / detaching operation of the grease gun 5. As a result, it is possible to dispense with the operation of the switch 9 for driving the pump device 1 when performing manual greasing, and thus workability can be further improved.

[Brief description of drawings]

FIG. 1 is a piping diagram showing an embodiment of a greasing device according to the present invention.

FIG. 2 is a piping diagram showing another embodiment.

FIG. 3 is a side view of the entire power shovel car shown as an application example of the greasing device.

FIG. 4 is a piping diagram showing a conventional greasing device.

[Explanation of symbols]

1 Pump Device 7 Branch Body 2 Main Pipe 72 Distribution Valve Port 3 Distribution Valve 73 Grease Gun Port 4 Distribution Valve Line 8 Opening / Closing Mechanism 5 Manual Grease Gun 81 (First)
Valve body 50 Flange portion 82 Operating body 53 Grease gun body 82b Abutment portion 55 Oil inlet 89 Support portion 58 Mounting portion 89a Hook portion 6 Grease gun line 9 Switch

Claims (6)

[Claims] 1. A greasing device comprising a pump device (1) having a greasing and depressurizing function, and a distribution valve (3) connected to a main pipe (2) extending from the pump device (1), Between the pump device (1) and the distribution valve (3) in the main pipe (2), the main pipe (2) is connected to a distribution valve line (4) and a manual grease gun (5). 6) is provided with a branch body (7) for branching to the branch body (7), and the branch body (7) is provided with a valve body (81) for opening and closing the distribution valve line (4), and the valve body (81) is provided with the manual grease. An opening / closing mechanism (8) having an operating body (82) that operates in tandem with the attachment / detachment of the gun (5) and closes the distribution valve line (4) when the grease gun (5) is used is provided. A greasing device characterized by the above. 2. The operating body (82) operates in association with the attachment / detachment of the oil intake port (55) provided in the manual grease gun (5) with respect to the grease gun port (73) provided in the branch body (7). The greasing device according to claim 1, wherein the distribution valve port (72) provided in the branch body (7) is closed when the grease intake port (55) is installed in the grease gun port (73). 3. A contact portion (82b) for contacting a flange portion (50) extending outward in the radial direction at the oil intake port (55) of the manual grease gun (5). The greasing device according to claim 2, further comprising: 4. The operating body (82) includes a support portion (89) for supporting the manual grease gun (5), and operates in association with attachment / detachment of the manual grease gun (5) with respect to the support portion (89). The greasing device according to claim 1, wherein the distribution valve port (72) of the branch body (7) is closed when the grease gun (5) is detached from the support portion (89). 5. A support portion (89) of an operating body (82) suspends the grease gun (5) via a mounting portion (58) provided in a grease gun body (53) of a manual grease gun (5). The greasing device according to claim 4, comprising a hook portion (89a) for supporting. 6. The branch body (7) is provided with a switch (9) for stopping driving of the pump device (1) in association with the operation of an opening / closing mechanism (8) for opening and closing the distribution valve line (4). The greasing device according to any one of claims 1 to 5.