JP2012121353A - Cargo bed actuation device of cargo bed-actuated vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cargo bed-actuated vehicle in which the cargo bed can be actuated with low noise (noiselessly) in an environment where noise complaint may occur and a low-noise actuation device can be installed compactly.SOLUTION: The cargo bed-actuated vehicle has a cargo bed that can be actuated by a hydraulic actuator on a chassis frame of the vehicle. In the cargo bed-actuated vehicle, as a hydraulic source to actuate the hydraulic actuator, not only a hydraulic pump driven by an engine but an electric hydraulic pump driven by electric power from an auxiliary battery are used, and the auxiliary battery, the electric hydraulic pump and a vehicle battery and a working oil tank are integrally arranged below the cargo bed at one of right and left side positions of the chassis frame. Thus, the cargo bed can be actuated with low noise in an environment where noise complaint may occur, and the cargo bed actuation device can be compactly installed.

Description

  In the present invention, the loading platform can be used for a predetermined application (for example, loading and unloading of a transported vehicle, discharging of earth and sand, etc.) by tilting or / and moving back and forth like a vehicle transport vehicle or a dump truck. More particularly, the present invention relates to a cargo bed actuating device for operating a cargo bed in such a cargo bed actuated vehicle.

  In this type of conventional cargo bed actuated vehicle (vehicle carrier or dump truck), a hydraulic actuator (extension cylinder) is used to actuate the cargo bed (for example, tilt). The PTO is operated by a traveling engine and is operated by the hydraulic pressure from a hydraulic pump operated by the PTO. In addition, there exists a thing of Unexamined-Japanese-Patent No. 2010-58776 (patent document 1) which the present applicant has already applied for a patent in what employ | adopted the vehicle carrier as this kind of cargo bed actuated vehicle. The vehicle transport vehicle of this type also operates a hydraulic actuator (extension cylinder) for actuating the cargo bed with power (PTO, hydraulic pump) derived from the traveling engine.

JP 2010-58776 A

  By the way, when the hydraulic actuator for operating the platform is operated with the power derived from the engine, it is necessary to start the engine (noise is generated). Therefore, the engine is started at night in a residential area. There is a risk of noise complaints.

  Therefore, in the present application, as a cargo bed operating source (hydraulic source to the hydraulic actuator), in addition to a hydraulic pump driven by engine-derived power (noise is generated), an electric hydraulic pump (quiet) is driven by an auxiliary battery. ) To operate the loading platform, so that the power from the engine (rotational force) and the power from the auxiliary battery (electric power) can be selected and used properly according to the situation during work, and the auxiliary battery It is an object of the present invention to provide a cargo bed actuating device for a cargo bed actuated vehicle in which a low noise actuating device such as an electric hydraulic pump can be installed in a compact manner.

  The present invention has the following configuration as means for solving the above problems. The present invention is directed to a loading platform actuating device for a loading platform actuated vehicle such as a vehicle transporter or a dump truck.

[Invention of Claim 1 of the Present Application]
The platform-operated vehicle used in the invention of claim 1 is configured such that the platform can be tilted or / and moved back and forth by a hydraulic actuator (mainly a telescopic cylinder) on the chassis frame of the vehicle.

  In the case of a dump truck with a loading platform actuated vehicle, the loading platform simply tilts on the chassis frame, but when the loading platform actuated vehicle is a vehicle carrier, the loading platform tilts with respect to the chassis frame and moves back and forth. It is like that.

  In the cargo bed actuating device according to the first aspect of the present invention, an electric hydraulic pump driven by electric power from the auxiliary battery is used in addition to the hydraulic pump driven by the engine as a hydraulic source for operating the hydraulic actuator for operating the cargo bed. On the other hand, the auxiliary battery, the electric hydraulic pump, the vehicle battery, and the hydraulic oil tank are arranged below the cargo bed and at one of the left and right side positions of the chassis frame.

  That is, in the loading platform actuating device according to claim 1 of the present application, an auxiliary battery is used separately from the existing vehicle battery, and the hydraulic pump for driving the loading platform is operated by a power (rotational force) derived from the engine. And an electric hydraulic pump driven by power (electric power) from an auxiliary battery can be selected and used. In order to operate the hydraulic actuator for actuating the loading platform, considerable noise is generated when the power from the engine is selected, but when the electric power from the auxiliary battery is selected, the operation sound of the electric hydraulic pump is relatively quiet.

  The auxiliary battery, the electric hydraulic pump, the vehicle battery, and the hydraulic oil tank are located on the opposite side of the chassis frame from the fuel tank installation side, and are arranged in a space between the vehicle cabin and the rear wheel. It is good to let them.

  By the way, the vehicle battery is charged by an alternator attached to the engine, but the auxiliary battery is also preferably charged by an electromotive force from the alternator. In that case, the auxiliary battery is charged by the electromotive force from the alternator using the auxiliary battery charger, and the vehicle battery, the auxiliary battery, and the auxiliary battery charger are collectively installed at positions close to each other as electrical wiring at that time. It is preferable to do. In addition, regarding the hydraulic piping (connection of the hose), it is preferable that the electric hydraulic pump, the hydraulic oil tank, and the hydraulic oil valve are in positions close to each other.

  Therefore, as in claim 1 of the present application, by arranging the auxiliary battery, the electric hydraulic pump, the vehicle battery, and the hydraulic oil tank in a concentrated manner at either the left or right side position of the chassis frame, below the loading platform. The electrical wiring and the hydraulic hose can be shortened, and the connection work can be performed only from one side of the vehicle (workability is improved). Moreover, if the electrical wiring can be shortened, the power transmission loss between the electrical members can be reduced.

  In the load bed actuating device according to claim 1, the hydraulic actuator for actuating the load bed is operated by the power derived from the engine (hydraulic pump driven by the PTO) as usual in an environment where no noise complaints are generated even when the engine is operated. On the other hand, in an environment where noise complaints are generated, the engine is stopped, and the hydraulic actuator for actuating the cargo bed can be operated with electric power from the auxiliary battery (drive of the electric hydraulic pump).

  Although the drive of the electric hydraulic pump by the auxiliary battery is quiet, if the loading platform operation by the auxiliary battery is frequently performed without charging, the remaining power storage amount of the auxiliary battery decreases.

[Invention of claim 2 of the present application]
The invention of claim 2 of the present application is the loading platform actuating device of claim 1, wherein a charger capable of charging the auxiliary battery by connecting a commercial power source is installed in the vicinity of the auxiliary battery.

  By the way, in the case where the load carrier can be operated by the power of the auxiliary battery as in the present application, the auxiliary battery can be charged by the electromotive force from the engine (alternator) by using the auxiliary battery charger as described above. However, in the electromotive force generated by the alternator, the vehicle battery is first charged, and the auxiliary battery is charged with the surplus electromotive force after the storage of the vehicle battery is full.

  Accordingly, charging of the auxiliary battery during engine operation is postponed. On the other hand, if the loading operation by the auxiliary battery is frequently performed, the remaining power storage amount of the auxiliary battery is reduced, and thus the loading of the auxiliary battery by the power of the auxiliary battery. May not work. And if the amount of electricity stored in the auxiliary battery is extremely reduced, for example, even if the alternator is energized by operating the engine during traveling, the auxiliary battery can be charged later, so that the load platform can be operated by the auxiliary battery. It takes quite a while to fill.

  Therefore, as described in claim 2, if a charger for the auxiliary battery is provided in the vicinity of the auxiliary battery, the auxiliary battery can be connected for a relatively short time by connecting a plug of a commercial power source to the charger. It is possible to charge up to the required amount of electricity.

[Effect of the invention of claim 1 of the present application]
In the loading platform actuating device of claim 1 of the present application, the hydraulic actuator for operating the loading platform can be operated by electric power from an auxiliary battery in addition to the power derived from the engine.

  Therefore, the cargo bed actuator according to claim 1 of the present application has the following effects.

  (1) In environments where noise complaints occur (for example, residential areas at night), the cargo bed can be operated quietly by operating the hydraulic actuator with electric power from the auxiliary battery (no noise complaints) .

  (2) Since the auxiliary battery, the electric hydraulic pump, the vehicle battery, and the hydraulic oil tank are gathered and arranged at either the left or right side position of the chassis frame below the cargo bed, The electrical wiring and hydraulic hose to be connected can be shortened, and the connection work can be performed only from one side of the vehicle, so the workability is improved. In addition, if electric wiring can be shortened, the power transmission loss between each electric related member can be made small.

[Effect of the invention of claim 2 of the present application]
The invention of claim 2 of the present application is such that in the load carrier actuating device of claim 1 above, a charger capable of charging the auxiliary battery by connecting a commercial power source is installed in the vicinity of the auxiliary battery. If there is a charger for an auxiliary battery, the auxiliary battery can be charged by a commercial power source when necessary.

  Therefore, in addition to the effect of claim 1, the load carrier actuating device according to claim 2 has an effect that even if the alternator is insufficiently charged to the auxiliary battery, the auxiliary battery can be charged using an external commercial power source. There is.

1 is a side view of a cargo bed actuated vehicle (vehicle transport vehicle) employing a cargo bed actuating device of an embodiment of the present application. FIG. 2 is a side view of a state in which a loading platform in the loading platform actuated vehicle (vehicle transport vehicle) of FIG. 1 is moved backward to a vehicle loading / unloading position. FIG. 2 is a plan view of a cargo bed actuating device portion in a state where a cargo bed portion in the cargo bed actuated vehicle (vehicle transport vehicle) of FIG. 1 is seen through. It is explanatory drawing which shows the connection state of each member in the loading platform actuator of an application example.

[Example]
The embodiment of the present application will be described with reference to FIGS. 1 to 4. In this embodiment, a vehicle carrier vehicle that can load and unload a vehicle to be loaded onto a cargo bed is adopted as a cargo bed actuated vehicle. In another embodiment of the present application, a dump truck can be adopted as the load carrier-operated vehicle. However, in this embodiment, a vehicle carrier is adopted, and in the following description, the load carrier-operated vehicle of the present application will be described. Is called a vehicle carrier.

  As shown in FIGS. 1 to 3, the vehicle transport vehicle employed in this embodiment includes a vehicle 1 having a pair of left and right chassis frames 11 and a rear end portion of a subframe 12 provided on the chassis frame 11. A pair of left and right inclined frames 3 pivotally supported (pivot support portion 31), a load platform 2 supported on the tilt frame 3 so as to be movable in the vehicle longitudinal direction, and the load platform 2 with respect to the tilt frame 3. A tilting device 4 that has a hydraulically operated telescopic cylinder 42 that moves in the vehicle longitudinal direction and tilts the tilting frame 3 together with the loading platform 2 by the telescopic movement of the telescopic cylinder 42 is configured.

  The tilting device 4 for a vehicle transporter includes a guide rail 41 provided on the subframe 12 and a hydraulically operated telescopic cylinder 42. In this embodiment, the telescopic cylinder 42 corresponds to the hydraulic actuator for actuating the loading platform described in the claims of the present application. In the following description, the hydraulic actuator is expressed as the telescopic cylinder 42.

  The basic configuration of the vehicle carrier of the embodiment shown in FIGS. 1 and 2 is the same as that disclosed in Japanese Patent Application Laid-Open No. 2010-58776 (FIGS. 1 and 12 of the same publication) disclosed as a publicly known example. The basic operation of the vehicle carrier of this embodiment is not so much related to the cargo bed actuating device of the present invention, and will be briefly described below.

  That is, in the vehicle transport vehicle of this embodiment, when the telescopic cylinder 42 is extended from the load storage state shown in FIG. 1, the inclined frame 3 is centered on the pivot 31 at the rear end portion of the subframe 12 as shown in FIG. On the other hand, the loading platform 2 is moved backward with respect to the tilting frame 3 to the vehicle loading / unloading position. When the telescopic cylinder 42 is reduced from the state of FIG. 2, the loading platform 2 moves forward with respect to the inclined frame 3, and the inclined frame 3 that is inclined rearward is returned to the horizontal posture direction by the guide rail 41. Eventually, the loading platform storage position shown in FIG. 1 is obtained.

  By the way, the expansion / contraction cylinder 42 for operating (tilting and moving back and forth) the loading platform 2 is hydraulically operated and can be expanded and contracted by supplying hydraulic oil to the expansion / contraction cylinder 42. The hydraulic oil for the expansion cylinder 42 for operating the cargo bed is normally supplied by the hydraulic pump 15 that is operated by the PTO 14 by operating the PTO 14 by the traveling engine 13.

  The hydraulic oil for operating the telescopic cylinder is stored in the hydraulic oil tank 17, which is located below the loading platform 2 and on either the left or right side of the chassis frame 11 as shown in FIGS. In the example of illustration, it is installed in the side part position of the left side seeing from the vehicle rear side. A hydraulic oil valve 18 for the telescopic cylinder 42 is installed in the vicinity of the hydraulic oil tank 17.

  In addition, a vehicle battery 21 is disposed on one side of the chassis frame 11 on the same side (left side) as the hydraulic oil tank 17. The vehicle battery 21 is charged by an alternator 16 provided in the engine 13 as shown in FIGS.

  In this embodiment, as shown in FIG. 3, a fuel tank 19 and a tool box 20 are installed on the right side of the chassis frame 11 (the position opposite to the installation position of the hydraulic oil tank 17 and the vehicle battery 21). The left and right weight balance is balanced.

  By the way, when the telescopic cylinder 42 for operating the loading platform is operated with the power derived from the engine as described above, the engine 13 needs to be activated. For example, the engine 13 is activated at night in a residential area. There is a risk of noise complaints.

  Therefore, in the embodiment of the present invention, as the loading platform actuating device, the electric hydraulic pump 5 driven by the auxiliary battery 22 is used in addition to the hydraulic pump driven by the power derived from the engine, and the expansion cylinder 42 for loading the loading platform is operated. However, the power (rotational force) from the engine 13 and the power (electric power) from the auxiliary battery 22 can be selected and used in accordance with the situation during work.

  In the cargo bed actuating device of this embodiment, the auxiliary frame 22, the electric hydraulic pump 5, the vehicle battery 21, and the hydraulic oil tank 17 are placed below the cargo bed 2 and between the cabin 9 and the rear wheel 10. Are arranged in a concentrated manner at either the left or right side position. That is, when the vehicle battery 21 and the hydraulic oil tank 17 are arranged on the left side of the chassis frame 11 as in the illustrated example, the auxiliary battery 22 and the electric hydraulic pump 5 are also arranged on the same side (left side).

  The electric hydraulic pump 5 is an integrated electric motor 51 and hydraulic pump 52 as shown in FIGS. 3 and 4. By rotating the electric motor 51 with electric power from the auxiliary battery 22, The hydraulic pump 52 can be driven. The electric hydraulic pump 5 is installed so that the brush portion 53 (see FIG. 3) faces the outside of the vehicle so that the maintenance of the brush portion 53 can be easily performed.

  In this embodiment, as shown in FIGS. 3 and 4, the auxiliary battery 22 can be charged together with the vehicle battery 21 by an alternator 16 provided in the engine 13. In order to charge with, it is necessary to use the auxiliary battery charger 23. The auxiliary battery charger 23 is interposed between the vehicle battery 21 and the auxiliary battery 22.

  The auxiliary battery charger 23 can supply the surplus electromotive force from the alternator 16 to the auxiliary battery 22 when the charging amount of the vehicle battery 21 is full, and can charge the auxiliary battery 22 with the surplus electromotive force. It is like that.

  3 and 4, each connection shown by a dotted line is an electric wire connecting an electrical member (alternator 16, vehicle battery 21, auxiliary battery 22, auxiliary battery charger 23, electric motor 51 of electric hydraulic pump 5, etc.). 27, and each connection shown by a solid line is connected to a hydraulic member (the hydraulic pump 15 on the engine 13 side, the hydraulic oil tank 17, the hydraulic oil valve 18, the telescopic cylinder 42, the hydraulic pump 52 of the electric hydraulic pump 5, etc.). This is a hydraulic hose 28. 3 and 4, reference numeral 24 denotes a switch for operating the electric hydraulic pump. By turning on the switch 24, the electric hydraulic pump 5 can be operated with electric power from the auxiliary battery 22. ing.

  In the loading platform actuating device of this embodiment, the power derived from the engine (PTO 14 and hydraulic pump 15) is used to operate the expansion cylinder 42 for loading platform operation in a situation where noise complaints do not occur. Under such circumstances, the engine is stopped so that the power from the auxiliary battery 22 can be used. And when operating the expansion cylinder 42 for operating the loading platform with the electric power from the auxiliary battery 22, the loading platform 2 can be operated with low noise (quietly), so that the loading platform 2 is operated in a residential area at night, for example. There is no noise complaint even when letting go.

  Further, in the loading platform actuator of this embodiment, the auxiliary battery 22, the electric hydraulic pump 5, the vehicle battery 21, and the hydraulic oil tank 17 are integrated into one of the left and right side positions of the chassis frame 11 as described above. Since it is arranged, each electric wire 27 connecting each electric related member and each hydraulic hose 28 connecting each hydraulic related member can be shortened, and the connection work can be performed only from one side of the vehicle. Therefore, workability is improved.

  Further, in the platform operating device of this embodiment, as shown in FIGS. 3 and 4, commercial power sources (power plugs 26 and 26) are connected to the vehicle battery 21 and the auxiliary battery 22, respectively, in the vicinity of the vehicle battery. Chargers 25 and 25 that can charge the battery 21 and the auxiliary battery 22 are installed.

  By the way, in the case where the load carrier 2 (the telescopic cylinder 42) can be operated by the electric power of the auxiliary battery 22 as in the present application, the auxiliary battery charger 23 is used as described above to start the engine 13 (alternator 16). Although the auxiliary battery 22 can be charged with electric power, the electromotive force generated by the alternator 16 is first charged with the vehicle battery 21 and supplemented with the surplus electromotive force after the storage of the vehicle battery 21 is full. The battery 22 is charged.

  Accordingly, charging of the auxiliary battery 22 at the time of engine operation is postponed. On the other hand, if the loading operation of the auxiliary battery 22 is frequently performed, the amount of power stored in the auxiliary battery 22 decreases, and consequently the auxiliary battery 22 There may be a case where the loading platform 2 cannot be operated with electric power. When the amount of electricity stored in the auxiliary battery 22 is extremely reduced, for example, even if the alternator 16 is powered by the engine operation during traveling, the auxiliary battery 22 is charged later, so that the auxiliary battery 22 is loaded. It may take a considerable amount of time to fill the 2 until it can be activated.

  Therefore, as described above, if the charger 25 for the auxiliary battery is provided, the auxiliary battery 22 is required in a relatively short time by connecting the commercial power plug 26 to the charger 25. It can be charged up to the amount of electricity stored.

  In this embodiment, both the vehicle battery 21 and the auxiliary battery 22 can be charged by the chargers 25 and 25, respectively. However, since the vehicle battery 21 is preferentially charged by the alternator 16, other In the embodiment, the charger for the vehicle battery 21 may be omitted (the charger 25 may be provided only on the auxiliary battery 22 side).

  1 is a vehicle, 2 is a loading platform, 4 is a tilting device, 5 is an electric hydraulic pump, 9 is a cabin, 10 is a rear wheel, 11 is a chassis frame, 12 is a subframe, 13 is an engine, 14 is a PTO, 15 is a hydraulic pump , 16 is an alternator, 17 is a hydraulic oil tank, 18 is a hydraulic oil valve, 19 is a fuel tank, 21 is a vehicle battery, 22 is an auxiliary battery, 23 is an auxiliary battery charger, 25 is a charger, 42 is a telescopic cylinder (hydraulic actuator) ).

Claims (2)

In a platform-operated vehicle in which a platform can be tilted or / and moved back and forth by a hydraulic actuator on a chassis frame of the vehicle,
As a hydraulic source for operating the hydraulic actuator, an electric hydraulic pump driven by electric power from an auxiliary battery is used in addition to a hydraulic pump driven by an engine.
The auxiliary battery, the electric hydraulic pump, the vehicle battery, and the hydraulic oil tank are arranged below the cargo bed and at one of the left and right side positions of the chassis frame.
A cargo bed actuating device for a cargo bed actuated vehicle. In claim 1,
A charger that can be connected to a commercial power source to charge the auxiliary battery is installed in the vicinity of the auxiliary battery.
A cargo bed actuating device for a cargo bed actuated vehicle.

Images