JP2579395Y2 - Upper battery charger for aerial vehicles - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upper battery charging device for an aerial work vehicle for raising and lowering a work table.

[0002]

2. Description of the Related Art An aerial work vehicle is provided with an elevating device (boom, etc.) for elevating and lowering a work table, so that an operator who is on the work table can be moved to an arbitrary height. Here, in an aerial work vehicle used for electric construction work or the like, a part of the lifting device is formed of an electrically insulating material to electrically insulate the vehicle body and the work table. Furthermore, a control device for controlling the operation of the lifting device and a lower power supply for supplying power to the control device are attached to the vehicle body, and a control device for controlling the lifting device and an upper battery for supplying power thereto are also provided on the work table. It is mounted so that no electric signal is exchanged between the vehicle body and the workbench. Thereby, an electric shock accident of a worker who is on the worktable can be prevented.

However, when the lifting device is stored in the vehicle body, for example, a first connector attached to a lower charging wire connected to a lower power source and a second connector attached to an upper charging wire connected to an upper battery are provided. Both wires are connected by coupling with a connector so that the upper battery can be charged by the lower power supply.

[0004]

However, there is a case where the first connector and the second connector are forgotten to be disconnected after the upper battery is charged. In this case, if the lifting device is operated as it is, these connectors may be damaged. There is a problem that the charging wiring is disconnected.

The present invention has been made in view of such a problem, and has been made in consideration of the above-described problems, and is intended to reliably prevent disconnection of a charging wiring due to forgetting to remove a connector. It is intended to provide a device.

[0006]

In order to achieve the above object, according to the present invention, a first upper battery charger is provided.
A first connector attached to a first lower power supply line connected to the lower power supply, a second connector attached to an upper charging wire connected to the upper battery, and detachably coupled to the first connector; An operation control means for receiving and controlling the operation of the elevating device;
A third connector for holding the lower power supply wiring and the control wiring connected to the operation control means in a disconnected state from each other;
The first connector is attached to the first connector, and the first connector is connected to the third connector.
It is composed of a jumper wire for connecting the second lower power supply wiring and the control wiring when coupled to the connector.
Then, the second connector and the third connector are selectively coupled to the first connector.

Further, as a second upper battery charging device, an operation control means for controlling the operation of the elevating device by receiving a supply of electric power, a control wiring connected to the operation control means, and a lower power supply wiring connected to the lower power supply. And a sub-connector attached to the upper charging wiring connected to the upper battery. When the sub-connector is connected to the main connector, the lower power supply wiring and the upper charging wiring are connected, while the lower power supply wiring and the control wiring are not connected in the main connector. I do.

[0008]

In the first upper battery charging device, after the charging of the upper battery is completed, the first connector is detached from the second connector and connected to the third connector, so that the second upper battery charging device is not connected to the second connector.
Are connected to the lower power supply wiring and the control wiring, and power is supplied to the operation control means from the lower power supply. That is, since the lifting device cannot be operated unless the first connector is connected to the third connector, the lifting device is operated while the first connector and the second connector are connected to disconnect the wiring. Accidents can be avoided in advance.

In the second upper battery charger,
Unless the sub-connector is connected to the main connector, the lower power supply wiring and the control wiring are connected, so that the lifting device can be operated. When the sub-connector is connected to the main connector, the lower power supply wiring and the upper charging wiring are connected to start charging of the upper battery, while the lower power supply wiring and the control wiring are automatically connected. The state of disconnection is set, and the operation of the elevating device is regulated. Therefore, it is possible to protect the charging wiring and the like in the same manner as in the first upper battery charger.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. First, FIG. 1 shows an aerial work vehicle 10 including the upper battery charging device according to the present invention. The body 11 of the aerial work vehicle 10 includes a body 11
A swivel 12 capable of horizontal swiveling is mounted on the swivel 12. A boom (elevating device) 13 configured to be telescopic and telescopic is attached to the upper part of the swivel table 12 so as to be able to move up and down. A work table 14 is horizontally attached to the tip of the boom 13.

The operations of the swivel 12 and the boom 13 are driven by hydraulic actuators. For example, the raising and lowering operation of the boom 13 is performed by the boom 13 and the swivel base 12.
It is driven by the expansion and contraction operation of the hydraulic cylinder 17 attached between them. The tip member 13a of the boom 13 is
The work table 14 and the vehicle body 11 are electrically insulated from each other.

A lower control device 21 for controlling the operation of the swivel base 12 and the boom 13 and a lower battery 2 for supplying operating power to the lower control device 21 are provided in the vehicle body 11.
2 are installed. The lower battery 22 is charged by a charger (not shown) attached to the engine of the aerial work vehicle 10. Further, a lower charger 23 used for charging an upper battery 22 described below is attached to the vehicle body 11. The lower battery 22 and the lower charger 23 are collectively referred to as a “lower power source”. On the other hand, an upper controller 25 for controlling the operation of the swivel table 12 and the boom 13 and an upper battery 26 for supplying operating power to the upper controller 25 are attached to the work table 14. Further, the workbench 11 is also provided with an upper charger 27 that receives power from the lower charger 23 and charges the upper battery 26.

In the aerial work vehicle 10 configured as described above, the worker M on the work table 14 receives the upper control device 25.
The operation of the swivel base 12 and the boom 13 is controlled through the operation described above, so that the user can move to any height. Further, the worker M 'on the ground is able to operate the lower controller 21 when the worker M cannot operate the upper controller 25 by himself.
To lower the workbench 14 on the ground.

By the way, for example, while the swivel base 12 and the boom 13 are stored in the vehicle body 11 and the aerial work vehicle 10 is running, it is desirable to charge the upper battery 26 in preparation for work. . For this reason, the work platform 1
0 is provided with a first upper battery charging device according to the present invention.

The first upper battery charger 50 is shown in FIG.
As shown in the figure, the first connector 51 and the second connector 52
, An unload valve 55, a third connector 53, and a jumper wire 56.

The first connector 51 is connected to the lower power supplies 22 and 23
Is attached to the end of the first lower power supply cord 22a connected to the first power supply cord 22a. Here, as shown in detail in FIG.
The connector 51 is formed in a concave shape so as to open upward, and two cylindrical charging contacts 51a, 51a are held in a right portion inside the connector 51. The first lower power cords 22a, 22a are connected to the charging contacts 51a, 51, respectively. On the left side in the first connector 51, two connection contacts 51c, 51c formed similarly to the charging contact 51a are held.

As shown in FIG. 3, the second connector 52 is attached to the tip of an upper charging cord 27a connected to the upper battery 26 via the upper charger 27. Here, as shown in detail in FIG.
2 is formed in a concave shape so as to open downward, and a pin-shaped 2 is formed on the right inside thereof.
The book charging contacts 52a, 52a are held. Upper charging cords 27a, 27a are connected to these charging contacts 52a, 52a. The second connector 52 is detachably connected to the first connector 51, and brings the charging contacts 52 a, 52 a into contact with the charging contacts 51 a, 51 a of the first connector 51. A projection 52 is provided at the lower right end of the second connector 52.
When the second connector 52 is coupled to the first connector 51, the projection 52b is received by a notch 51b formed at the upper right end of the first connector 51. . Thereby, the second connector 52
Of the first connector 51 is not mistaken.

The unload valve 55 is, as shown in FIG. 2, an electromagnetic switching valve having a solenoid 55a.
When the solenoid 55a is in the non-excited state, the unload valve 55 drains the hydraulic oil discharged from the hydraulic pump P mounted on the vehicle body 11 at the right-hand position to the oil tank T as it is. On the other hand, when the solenoid 55a is in the excited state, it switches to the left movement position and supplies the working oil to the valve unit VU. The valve unit VU is operated by the hydraulic actuator (17 or the like) in accordance with control signals from the two control devices 21 and 25.
To control the supply of hydraulic oil to.

The third connector 53 is, as shown in FIG.
Second lower power supply cord 2 connected to lower power supplies 22 and 23
2b and a control cord 55b connected to the solenoid 55a of the unload valve 55.
Here, as shown in detail in FIG. 3, the third connector 53 is formed substantially similarly to the second connector 52.
The first connector 51 can be selectively coupled to the second connector 52. The third connector 53 has two pin-shaped connection contacts 53a, 5
3a is held. These connection contacts 53
a, 53a is connected to the second lower power cord 22b, and the other is connected to the control cord 5b.
5b is connected.

The third connector 53 is connected to the first connector 51
Are connected to the connection contacts 53a, 53
a is the connection contacts 51c, 5 of the first connector 51;
1c. In addition, since the protrusion 53b which can be received in the notch 51b of the 1st connector 51 is formed in the lower right end of the 3rd connector 53, the connection direction of the 3rd connector 53 with respect to the 1st connector 51 is wrong. There is no.

The jumper wire 56 is attached to the first connector 51, and connects between the base ends of the two connection contacts 51b, 51b held by the first connector 51.

According to the upper battery charger 50 configured as described above, the first connector 51 and the second connector 5
When the second connector 2 is connected, the power is not supplied to the solenoid 55a because the second lower power cord 22b and the control cord 55b are not connected in the third connector 53, and the unload valve is not connected. 55 is located at the right movement position. Therefore, no hydraulic oil is supplied to the valve unit VU, and the boom 13 and the like cannot be operated even if the control devices 21 and 25 are operated in this state. Therefore, the operation of the boom 13 and the like during the connection between the first connector 51 and the second connector 52 is restricted, and it is possible to prevent a disconnection accident or the like of the first lower power cord 23a or the upper charging cord 27a. .

On the other hand, the second connector 52 is connected to the first connector 5
1 and the third connector 53 is connected to the first connector 5.
1 is connected to the second via the jumper wire 56.
The lower power cord 22b and the control cord 55b are connected. Therefore, the lower power supply 22,
Electric power is supplied from 23, and the unload valve 55 switches to the left movement position. Therefore, the valve unit VU
Is supplied with hydraulic oil, and in this state, the control devices 21 and 25
Is operated, the boom 13 and the like can be freely operated.

In this embodiment, the third connector 53
Is formed in the same shape as the second connector 52, but may be formed in a shape different from the second connector 52 'as shown in FIG. That is, the third connector 53 'is formed so as to receive the first connector 51' in the longitudinal direction. Inside the third connector 53 ', two connection contacts 53a' and 53 whose tip ends are bent back into a U-shape.
a 'is held vertically apart. Both contacts 53
a ', 53a' is connected to the second lower power cord 22b.
Is connected, and the other end is connected to a control cord 55b. A jumper wire 56 'is attached to the outer surface of the first connector 51' so as to extend vertically.

In such a charging device 50 ', when the first connector 51' is received in the third connector 53 'and the two connectors 53 and 51 are connected to each other, the two connection contacts 53a in the third connector 53'. ', 53a' contact jumper wire 56, and second lower power cord 22b and control cord 55b are connected. Therefore, the operation of the boom 13 and the like is allowed. The third connector 53 'and the first connector 53'
In a state where the connector 51 'is connected, the third connector 5
Since the upper part of 3 'extends so as to close the opening of the first connector 51', the second connector 52 'is connected to the first connector 5'.
It cannot be linked to 1 '.

Further, a second upper battery charger as described below may be attached to the aerial work vehicle 10 instead of the first charger 50. As shown in FIG. 5, the second upper battery charger 70 includes a main connector 71, a sub connector 72, and an unload valve 75.
It is composed of

The main connector 71 is connected to the lower power supplies 22 and 2.
The lower power supply cords 22a are connected to the end of the lower power supply cords 22a. This main connector 71 is shown in FIG.
As shown in detail in FIG. 2, two charging contacts 71 formed in a cylindrical shape are formed in a concave shape so as to open to the right, and at an intermediate portion in the vertical direction inside thereof.
a, 71a. These charging contacts 7
1a, 71a are provided with the lower power cords 22a, 22a.
a is connected. A partition plate 71b is formed below the main connector 71 to partition the internal space into upper and lower portions, and a partition that opens rightward at the right end (opening side) of the partition plate 71b. A notch 71c is formed.

Further, a lever contact 71d is held at a lower portion partitioned by the partition plate 71b. A control cord 75b connected to a solenoid 75a of the unload valve 75 is connected to a base end of the lever contact 71d. Lever contact 7
The tip of 1d is bent and formed in a triangular shape, and the lever contact 71d is arranged such that this tip projects into the notch 71c by its own elastic force. In addition, a contact 71e for contact is held between the partition plate 71b and the lever contact 71d.
The tip of the contact 71e is bent and formed in a triangular shape. When the lever contact 71d extends so as to project the tip into the notch 71c, it comes into contact with an intermediate portion of the lever contact 71d. I do. The contact 71e for contact and one (plus side) charging contact 71a are connected to a jumper wire 71f.
Connected by

The sub-connector 72 is, as shown in FIG.
The upper charging cords 27a are connected to the upper battery 26 via the upper charger 27, and are attached to tips of the upper charging cords 27a. Here, as shown in detail in FIG. 6, it is formed in a concave shape so as to open to the left, and two pin-shaped charging contacts 72a are formed in an intermediate portion in the vertical direction inside the concave portion. , 72a are held. Upper charging cords 27a, 27a are connected to these charging contacts 72a, 72a. The sub-connector 72 is detachably connected to the main connector 71 and brings the charging contacts 72a, 72a into contact with the charging contacts 71a, 71a of the main connector 71. A projection 72b is formed at the lower end of the sub-connector 72.
1, the projection 72b is received by a notch 71b formed in the main connector 71. Thus, the connection direction of the sub-connector 72 to the main connector 71 is not mistaken.

The unload valve 75 includes a solenoid 75
It is an electromagnetic switching valve having a. When the solenoid 75a is in the non-excited state, the unload valve 75 is located at the left-moving position and drains the operating oil discharged from the hydraulic pump P to the oil tank T as it is. On the other hand, when the solenoid 75a is in the excited state, it switches to the right movement position and supplies the working oil to the valve unit VU.

In the third upper battery charging device 70 thus configured, when the main connector 71 and the sub-connector 72 are not connected, the main connector 71
Inside, the lever contact 71d contacts the contact 71e for contact by elastic force. Therefore, the lower power cord 22a and the control cord 75b are connected, and power is supplied from the lower power supplies 22 and 23 to the solenoid 75a. As a result, the unload valve 75 is located at the right movement position, and the operating oil is supplied to the valve unit VU. Therefore, if the control devices 21 and 25 are operated in this state, the boom 13 and the like can be freely operated.

On the other hand, when the sub-connector 72 is connected to the main connector 71, the notch 7
The lever contact 71d is moved downward by the projection 72b of the sub-connector 72 received in the sub connector 1b, and detaches from the contact 71e. Therefore, the lower power cord 22a and the control cord 75b are disconnected from each other,
The unload valve 75 is located at the left movement position, and no hydraulic oil is supplied to the valve unit VU. Therefore,
Even if the control devices 21 and 25 are operated in this state, the boom 1
No third mag can be activated. On the other hand, since the charging contacts 71a, 72a of both connectors 71, 72 come into contact with each other, the upper battery 26 is charged by the lower power supplies 22, 23. Power cord 2 during charging
Needless to say, it is possible to avoid an accident such as a disconnection of the upper charging cord 27a or the upper charging cord 27a.

Then, a third upper battery charger described below may be attached in place of the first and second chargers 50 and 70 described above. As shown in FIG. 7, the third upper battery charging device 90 includes a first connector 91, a second connector 92, an unload valve (operation control means) 95, and a third connector 93. I have.

The first connector 91 is connected to the lower power supplies 22 and 23
Is attached to the distal end of the lower power supply cord 22a connected to the lower power supply cord 22a. The second connector 92 is connected to the upper charger 27.
The upper charging cord 27a is connected to the upper battery 26 through the upper end of the battery. The second connector 92 can be detachably connected to the first connector 91.

The unload valve 95 includes a solenoid 95
It is an electromagnetic switching valve having a. When the solenoid 95a is in the non-excited state, the unload valve 95 is located at the left-moving position and drains the operating oil discharged from the hydraulic pump P to the oil tank T as it is. On the other hand, when the solenoid 95a is in the excited state, it switches to the right movement position and supplies the hydraulic oil to the valve unit VU.

The third connector 93 is connected to the unload valve 9.
5 is attached to the tip of a control cord 95b connected to the solenoid 95a. The third connector 93
Can be selectively coupled to the first connector 91 and the second connector 92. That is, the third connector 9
3 can be connected to the first connector 91 only when the second connector 92 is not connected to the first connector 91.

In the upper battery charging device 90 configured as described above, when the first connector 91 and the second connector 92 are connected, the lower power cord 22a and the upper charging cord 27a are connected, and the lower power cord 22a is connected. , 23 charge the upper battery 26. At this time, since the third connector 93 is always uncoupled from the first connector 91, no power is supplied to the solenoid 95a, and the unload valve 95 is located at the left movement position. Therefore, no hydraulic oil is supplied to the valve unit VU, and the boom 13 and the like cannot be operated even if the control devices 21 and 25 are operated in this state. Therefore, the boom 1 during the connection (during charging) between the first connector 91 and the second connector 92
3 and the like are regulated, and the connectors 91 and 92 are damaged, the lower power cord 22a and the upper charging cord 27a.
Cutting accident can be avoided beforehand.

On the other hand, the second connector 92 is connected to the first connector 9
1 and remove the third connector 93 from the first connector 9.
1, the lower power cord 22a and the control cord 95b are connected, and power is supplied from the lower power supplies 22 and 23 to the solenoid 95a. As a result, the unload valve 95 switches to the right movement position. Therefore, hydraulic oil is supplied to the valve unit VU, and if the control devices 21 and 25 are operated in this state, the boom 13 and the like can be freely operated.

[0039]

As described above, in the first upper battery charger of the present invention, the first connector is connected to the second connector to charge the upper battery, and then the first connector is disconnected from the second connector. The lifting device cannot be operated unless it is removed and connected to the third connector. Therefore, if these upper battery chargers are used, it is possible to prevent an accident such as disconnecting the charging wiring by operating the lifting / lowering device while the first connector and the second connector are connected as in the related art. be able to.

In the second upper battery charger,
When the sub-connector is coupled to the main connector, the upper battery can be charged, but the lifting device cannot be automatically operated. For this reason, like the first and second charging devices, it is possible to prevent an accident such as disconnection of the charging wiring.

[Brief description of the drawings]

FIG. 1 is a side view of an aerial work vehicle equipped with an upper battery charging device according to the present invention.

FIG. 2 is a configuration diagram of a first upper battery charging device according to the present invention.

FIG. 3 is a diagram showing a first example of the first upper battery charger.
It is sectional drawing which shows-3rd connector.

FIG. 4 is a view showing a first example of the first upper battery charger.
It is sectional drawing which shows 2nd Example of 3rd connector.

FIG. 5 is a configuration diagram of a second upper battery charging device according to the present invention.

FIG. 6 is a sectional view showing a main and a sub-connector in the second upper battery charger.

FIG. 7 is a configuration diagram showing an upper battery charging device different from the first and second charging devices.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 work platform aerial platform 13 boom (elevator) 14 work table 22 lower battery 23 lower charger 26 upper battery 51,91 first connector 52,92 second connector 50,70,90 upper battery charger 55,75,95 Unload valve (operation control means) 53, 93 Third connector 76 Jumper wire 71 Main connector 72 Sub-connector

──────────────────────────────────────────────────続 き Continued on the front page (56) References JP-A 2-126929 (JP, U) JP-A 3-1644 (JP, U) JP-A 63-173195 (JP, U) (58) Survey Field (Int.Cl. ⁶ , DB name) B66F 9/00-11/04

Claims (2)

(57) [Scope of request for utility model registration] 1. An upper battery charger for an aerial work vehicle, comprising: a lifting device for raising and lowering a work table on a vehicle body; a lower power supply provided on the vehicle body; and an upper battery provided on the work table. A first connector attached to a first lower power supply wire connected to the lower power supply, a second connector attached to an upper charge wire connected to the upper battery, and detachably coupled to the first connector; An operation control means for controlling the operation of the elevating device in response to the supply of, a second lower power supply wire connected to the lower power supply and a control wire connected to the operation control means are held in a disconnected state from each other, A third connector detachably coupled to the first connector; and a third connector attached to the first connector, and the first connector coupled to the third connector. And a jumper wire for connecting the second lower power supply wiring and the control wiring, wherein the second connector and the third connector are selectively coupled to the first connector. Characteristic upper battery charger for aerial work vehicles. 2. An upper battery charging device for an aerial work vehicle, comprising: a lifting device for raising and lowering a work table on a vehicle body; a lower power supply provided on the vehicle body; and an upper battery provided on the work table. Operation control means for receiving the supply of power to control the operation of the elevating device, a main connector for holding a control wiring connected to the operation control means and a lower power supply wiring connected to the lower power supply in a connected state, And a sub-connector attached to the upper charging wiring connected to the upper battery and detachably connected to the first main connector. When the sub-connector is connected to the main connector, the lower power supply While the lower power supply wiring and the control wiring are not connected in the main connector while the power supply wiring is connected to the upper charging wiring. Upper battery charger of aerial platforms characterized by comprising.