JP5764163B2 - Vehicle with crusher - Google Patents

Description

  The present invention relates to a vehicle with a crusher.

  2. Description of the Related Art Conventionally, a crusher-equipped vehicle equipped with a vertical crusher that crushes concrete or the like in a demolition operation of a building or the like (see, for example, Patent Document 1) includes an engine and a hydraulic actuator for opening and closing the vertical crusher. A hydraulic pump driven by the engine to pump hydraulic oil to the hydraulic actuator.

Japanese Utility Model Publication No. 6-67700

  Conventionally, the open operation of the vertical crusher is lighter than the closed operation, but when the vertical crusher was opened, the engine was driven in the same way as the closed operation, so wasted (excess energy) ) Occurs and energy efficiency is poor.

  Then, this invention aims at provision of the vehicle with a crusher which collect | recovers the surplus energy of the engine generated when opening a vertical crusher, and can generate electric power.

In order to achieve the above object, a vehicle with a crusher of the present invention is equipped with an engine, a hydraulic actuator for a crusher for opening and closing a vertical crusher, and for driving the hydraulic actuator for a crusher. A crusher-equipped vehicle having a hydraulic pump driven by the engine, wherein the rotation of the engine can be transmitted to the power generation device via the clutch device, and the vertical crusher is closed. The clutch device is in a clutch disengaged state, and when the vertical crusher is opened, the clutch device is in a clutch connected state to generate electric power by the power generation device, and the vertical crusher is opened and closed. And a limit switch near the foot pedal to operate the foot pedal to open the vertical crusher. When the is the limit switch operated by the foot pedal, which is constituted so as to transmit a clutch connection command signal to the clutch device from the limit switch.

According to the present invention, surplus energy of the engine generated when the vertical crusher is opened can be recovered. In an attempt to quickly open the vertical crusher, the operator can recover the excessive driving force generated by rotating the engine higher than necessary (like an air blower) to generate electricity (can be recovered as electrical energy). .

It is a side view which shows one Embodiment of this invention. It is a block diagram of a closed operation state. It is a block diagram of an open operation state.

Hereinafter, the present invention will be described in detail based on illustrated embodiments.
As shown in FIG. 1, a vehicle with a crusher according to the present invention includes a chassis (lower half) part 1 that can be self-propelled by a pair of left and right traveling crawlers, and a turnable part mounted on the chassis part 1. And a revolving (upper half) portion 2 provided with a work arm (work boom) 22, a vertical crusher 3 attached to the tip of the work arm 22, and an engine E as a drive source, Concrete is crushed by the vertical crusher 3 at a demolition work site such as a building.

  2 and 3, the crusher hydraulic actuator (hydraulic cylinder) 31 for opening and closing the pair of crushing arms 30 and 30 of the vertical crusher 3 and the crusher hydraulic actuator 31 are driven. A hydraulic pump P capable of pressure-feeding the hydraulic oil, and an oil storage tank T connected to the hydraulic pump P and storing the hydraulic oil.

In addition, a control valve V having a plurality of hydraulic circuit switching valve portions is interposed between the hydraulic pump P and the crusher hydraulic actuator 31.
The control valve V has a plurality of working arm hydraulic actuators (hydraulic cylinders) 22a, 22b, 22c for driving the joints of the working arm 22, an oil storage tank T, and a travel (not shown) for driving the travel crawler belt. The hydraulic motor for rotation and the hydraulic motor for rotation (not shown) for driving the swing unit 2 to rotate are connected to each other, and the hydraulic oil (pressure oil) from the hydraulic pump P and the hydraulic actuators and hydraulic motors It has a hydraulic circuit and a plurality of valves for controlling the flow and pressure of hydraulic oil (return oil from each hydraulic operating device).

Further, the first output means 11 for outputting the rotational force (driving force) of the engine E to the hydraulic pump P is linked to the first output means 11 and connected to the driving force input portion 51 of the clutch device 5. Second output means 12.
The power generator G is connected to the driving force output unit 52 of the clutch device 5 so that the rotation of the engine E can be transmitted to the power generator G via the clutch device 5.

The first output means 11 and the second output means 12 are mechanically interlocked and connected so that the load applied to one is applied to the other, and the rotation / stop is synchronized.
In the illustrated example, the first output means 11 is a first (drive) rotation output shaft 11A that is interlocked with the rotation drive section in the engine E, and the second output means 12 is in the engine E (the rotation drive section is connected to the rotation drive section). A second (driven) rotary output shaft 12A that is linked to the first rotary output shaft 11A.

Although not shown in the figure, the first output means 11 is a drive rotation output shaft connected to the rotation drive section in the engine E, and the second output means 12 is fixed to the drive rotation output shaft in an outer fitting manner. A drive sprocket, a chain suspended on the drive sprocket, a driven sprocket on which the chain is suspended, and a driven rotation output shaft on which the driven sprocket is fitted may be used.
In other words, the first output means 11 and the second output means 12 only need to be able to transmit the power (rotational force) generated by the engine E to the hydraulic pump P and the clutch device 5. Any rotary member such as a chain, a belt, a flexible power transmission member, a gear, or the like can be used as long as it can be mechanically interlocked with the rotation drive unit in the engine E.

  Further, a converter C that is electrically connected to the power generator G and converts the generated electricity from alternating current to direct current, and is electrically connected to the power generator G via the converter C and converted by the converter C (DC). And a battery B such as a capacitor or a battery for storing electricity.

The battery B is electrically connected to an engine auxiliary electric motor M that assists driving of the engine E. Moreover, you may electrically connect the electrical storage B to electrical components, such as illumination.
Further, instead of the turning hydraulic motor, or in order to assist the turning hydraulic motor, a turning electric motor for turning the turning portion 2 may be provided and electrically connected to the battery B.
Further, instead of the traveling hydraulic motor, or in order to assist the traveling hydraulic motor, a traveling electric motor for driving the traveling crawler belt may be provided and electrically connected to the battery B.

Further, a foot pedal 6 for opening and closing the vertical crusher 3 is provided in the operation chamber 21.
The foot pedal 6 includes a foot step portion 61 on which an operator's foot can be placed, and a projecting piece portion 62 that protrudes downward from an intermediate portion of the foot step portion 61.
Then, the projecting piece portion 62 (intermediate portion of the foot step portion 61) is pivotally attached to the operation chamber fixing portion (a bracket member fixed in the operation chamber 21) 28, and the foot one end portion 61a and the other end of the foot step The portion 61b is provided so as to swing the seesaw around the horizontal pivot axis La.
Further, an operating force transmission rod 63 is connected to the lower part of the projecting piece 62, and the operating force transmission rod 63 reciprocates linearly as the foot pedal 6 swings to open and close the vertical crusher of the control valve V. The hydraulic circuit switching unit is provided for switching operation. The connection between the foot pedal 6 and the control valve V is not limited to a mechanical connection such as the operating force transmission rod 63, but may be connected by an electrical connection (electric signal).

  Further, the foot pedal 6 shown in the figure is provided with a foot portion 61 in a longitudinally long shape, a pivotal axis La along the left-right direction, and a foot end portion 61a on which an operator's heel is disposed. As the side portion, the other end portion 61b of the foot is used as a toe side portion on which the toe of the operator is disposed, so that the seesaw swings back and forth around the horizontal pivot axis La.

  Although not shown in the drawings, the foot pedal 6 is provided in a horizontally long shape along the left-right direction, and is provided so as to swing right and left seesaw around the pivotal axis La of the front-rear horizontal shape to move the toe of the foot in the left-right direction. The saddle crusher 3 may be opened or closed by stepping on the foot one end 61a or the foot other end 61b.

  Then, as shown in FIG. 2, when the operator depresses the other foot 61b of the foot pedal 6, the crusher hydraulic actuator 31 is extended, and the vertical crusher 3 is closed so as to be closed. Let Also, as shown in FIG. 3, when the operator steps on the foot one end 61a of the foot pedal 6, the crusher hydraulic actuator 31 is shortened, and the saddle crusher 3 is opened so as to be in the open state. .

Further, a limit switch 7 is provided below the foot one end 61a of the foot pedal 6, and when the foot one end 61a is stepped on to open the saddle crusher 3, as shown in FIG. The rear end side of the foot one end portion 61a is in contact with the limit switch 7 and is turned ON to transmit a clutch connection command signal S from the limit switch 7 to the clutch device 5.
That is, the clutch device 5 is provided so as to be in a clutch connected state when the vertical crusher 3 is opened, and to be in a clutch disengaged state when the vertical crusher 3 is closed.

Next, the usage method (action | operation) of the vehicle with a crusher of this invention is demonstrated.
When crushing the material to be crushed with the vertical crusher 3 at the site of demolition work such as building or industrial waste, as shown in FIG. The part 61b is stepped on and closed so that the vertical crusher 3 is in a closed state. Since the clutch is disengaged during the closing operation, the power of the engine E is transmitted only to the hydraulic pump P.
When the saddle type crusher 3 is opened from the closed state to the open state, as shown in FIG. 3, when the foot pedal 6 is stepped on one end 61 a of the foot pedal 6, the vertical type crusher 3 is opened. Operate.

  Here, the engine E always allows the closing operation (heavy load operation) of the vertical crusher 3 and the operation of other hydraulic actuators and other hydraulic motors (other hydraulic operation devices), Although the predetermined driving force is exerted, the opening operation of the vertical crusher 3 has a smaller load than the closed operation, and therefore, during the opening operation of the vertical crusher 3, the engine E causes the hydraulic pump P to There is a margin in the power that was being driven. That is, surplus energy is generated. In addition, since the time required for the opening operation is a wasteful time during which no substantial crushing work is performed, the operator tries to increase the speed of the opening operation (the operating speed of the hydraulic actuator 31 for the crusher) and There is a case where an operation such as empty plowing is performed to drive E at a higher rotational speed than necessary (demonstrating a driving force higher than a predetermined driving force). In such a case as well, surplus energy (excess torque or excessive rotational force) is generated. Occur.

  However, when the foot one end 61a is depressed, the limit switch 7 is turned on, the clutch connection command signal S is transmitted to the clutch device 5, the clutch is connected, and the engine E and the power generator G are connected. Since the mechanically linked connection is made, the above-described surplus energy is used to drive the power generation device G via the clutch device 5.

In other words, pay attention to the difference between the engine driving force required for the closing operation (heavy load operation) of the vertical crusher 3 and the engine driving force required for the opening operation (light load operation) as surplus energy. The power generation device G is driven by energy, surplus energy is converted into electric energy, and is collected in the battery B.
The electric energy stored in the battery B is used for an electric device such as an auxiliary electric motor that assists the engine E.

  The design of the present invention can be changed, and the vertical crusher 3 may include a plurality (two) of crusher hydraulic actuators 31 so as to correspond to the crushing arms 30 and 30, respectively. Further, the vertical crusher 3 may be closed when the crusher hydraulic actuator 31 is shortened and open when the crusher hydraulic actuator 31 is extended. The engine E may be mechanically linked to the traveling track. In FIG. 2 and FIG. 3, electrical connections (electrical wiring) are shown by broken lines.

  As described above, the crusher-equipped vehicle of the present invention is equipped with the engine E and the crusher hydraulic actuator 31 for opening and closing the vertical crusher 3 and the crusher hydraulic actuator 31 for driving. In a vehicle with a crusher equipped with a hydraulic pump P driven by the engine E, the rotation of the engine E can be transmitted to the power generator G through the clutch device 5, and the vertical crusher 3 is Since the clutch device 5 is in the clutch disengaged state when the closing operation is performed, and the clutch device 5 is in the clutch connected state when the saddle type crusher 3 is opened, the power generator G generates power. The surplus energy of the engine generated when the engine is opened can be recovered, and the energy efficiency can be improved. In an attempt to quickly open the vertical crusher 3, the operator can recover the excessive driving force (rotational force) generated by rotating the engine higher than necessary (like an empty blower) as electric energy. In addition, it is possible to prevent the operator from rotating the engine E higher than necessary during the opening operation and causing the hydraulic piping to become over-hydraulic or in a high-heat state where the excess hydraulic energy is changed. Deterioration of piping can be prevented. In particular, in the dismantling operation, the traveling of the vertical crusher 3 is frequently repeated at the same place with almost no traveling or the like, so the chance of recovering surplus energy is increased, and the engine auxiliary electric motor M or the like is recovered. It can be used effectively and can contribute to the improvement of fuel efficiency.

  In addition, a foot pedal 6 for opening and closing the vertical crusher 3 is provided and a limit switch 7 is provided in the vicinity of the foot pedal 6, and the foot pedal 6 is operated to open the vertical crusher 3. Since the limit switch 7 is operated by the foot pedal 6 and the clutch connection command signal S is transmitted from the limit switch 7 to the clutch device 5, the clutch is securely connected when the vertical crusher 3 is opened. It can generate electricity in a state. The clutch connection operation of the clutch device 5 can be performed almost simultaneously with the stepping operation in which the operator opens the saddle crusher 3 with the foot pedal 6, and the burden on the operator (operation) can be reduced. A clutch lever or the like for operating the clutch device 5 does not need to be erected in the narrow operation chamber 21, so that the operation chamber 21 can be effectively used widely and the operation chamber 21 can be simplified.

3 Vertical crusher 5 Clutch device 6 Foot pedal 7 Limit switch
31 Hydraulic actuator for crusher E Engine G Power generator P Hydraulic pump S Clutch connection command signal

Claims (1)

The engine (E) is mounted and the crusher hydraulic actuator (31) for opening and closing the vertical crusher (3) and the engine (E) for driving the crusher hydraulic actuator (31) are mounted. ) Driven by a crusher equipped with a hydraulic pump (P),
The rotation of the engine (E) can be transmitted to the power generation device (G) via the clutch device (5),
The clutch device (5) is disengaged when the vertical crusher (3) is closed, and the clutch device (5) is engaged when the vertical crusher (3) is opened. And configured to generate power with the power generation device (G) ,
A foot pedal (6) for opening and closing the vertical crusher (3) is provided and a limit switch (7) is provided in the vicinity of the foot pedal (6),
When the foot pedal (6) is operated to open the vertical crusher (3), the limit switch (7) is operated by the foot pedal (6), and the limit switch (7) A vehicle with a crusher configured to transmit a clutch connection command signal (S) to the clutch device (5) .

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