JPH0211517B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a cargo handling vehicle.

[Prior art]

2. Description of the Related Art Conventionally, there is a cargo handling vehicle shown in FIG. 1, which performs cargo handling work by sliding a cargo handling mast back and forth. This cargo handling vehicle 101 is typically shown in Japanese Utility Model Application Publication No. 56-20996, and is installed on the front side of a pair of support legs 103, 103 that are long in the front and back direction, and is installed on the inside of the support legs 103, 103. On the guide rails 107, 107, the rail 10
Cargo handling mast support member 109 that can run along 7
is installed. The cargo handling mast 111 supported by the cargo handling mast support member 109 includes an outer mast 113 and an inner mast 115, and the outer mast 113 is fixed to the support member 109. On the other hand, the inner mast 115 is supported so as to be able to move up and down along the outer mast 113 by controlling a mast cylinder (not shown) or the like, and a carriage 117 such as a fork is attached to the front surface of the mast 115.

In the case of the cargo handling vehicle 101 having such a configuration, the supporting legs 103 are inserted into the underside of the loading platform of loaded pallets to carry out cargo handling work, or the supporting legs 103, 103 are fully advanced so as to straddle the cargo to reach the back of the cargo. It is used for cargo handling work. In particular, supporting leg 1
Since the 03 is equipped with wheels 119 for running, the ground clearance H of the support leg 103 is high, and there are problems such as the pallet having a low loading platform may come into contact with the loading platform and restrict cargo handling operations. Ta.

On the other hand, as shown in Fig. 2, a hydraulic system (not shown)
A link mechanism 120 that is telescopically controlled in the front-rear direction (arrow) extends from the inner mast 115, and at the tip of the link mechanism 120 there is a cargo handling vehicle 101 that supports a carriage 117. The cargo handling mast 111 of the cargo handling vehicle 101 is fixedly supported on the front surface of the vehicle body 105 because the carriage 117 itself can be extended and contracted back and forth by a link mechanism 120. In addition, hydraulic equipment such as a mast cylinder installed on the cargo handling mast 111 (figure omitted)
is controlled by a cargo handling control section 121 built into the vehicle body 105.

The cargo handling control unit 121 is connected to the hydraulic system on the cargo handling mast 111 side via a hydraulic pipe, and since the cargo handling mast 111 is fixedly supported at the front of the vehicle body 105, repairs and inspections are possible. It is installed at the back or side.

As a result, the hydraulic pipes have become long, making the layout and maintainability of the piping difficult. In particular, when hydraulic pipes are installed laterally, problems such as damage may occur during cargo handling operations, and similar to the one shown in FIG. 1, there is a problem in that cargo handling operations are restricted.

[Purpose of the invention]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a cargo handling vehicle that can improve maintainability and prevents the support legs from hitting the pallet loading platform, thereby freeing the cargo handling operations from being restricted.

[Structure of the invention]

In order to achieve the above object, the present invention includes a vehicle body in which a cargo handling control section is provided in the front case, and a vehicle body that extends to the front of the lower part of the vehicle body, and the ground clearance of the front half is lower than the ground clearance of the rear half. A pair of support legs formed in a longitudinal direction, and an outer mast whose middle part is removably attached to the vehicle body and whose lower part is attached to the rear half of the support legs, and which is supported by the support legs so as to be movable forward within a predetermined range when detached from the attachment. It consists of an inner mast supported by the outer mast so as to be movable up and down, and a carriage supported by the inner mast via a link mechanism so as to be extendable and retractable back and forth by a hydraulic system.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings of FIGS. 3 to 5. In the figure, reference numeral 1 indicates the body of a cargo handling vehicle 3, and a cargo handling control section 7 is disposed within a front case 5 of the vehicle body 3. The front panel 9 of the cargo handling control section 7 is screwed to the peripheral edge of the case 5 with set screws 11.

A pair of supporting legs 13, 13, which are long in the front-rear direction, are supported at the lower part of the vehicle body 1. The support leg 13 consists of a rear half 15 fixedly supported on one side of the vehicle body and a front half 19 having running wheels 17, and the ground clearance h of the front half 19 is set lower than the ground clearance H of the rear half 15, and , the ground height h of the first half 19 is pallet 21
It is made lower than the loading platform 23 of. On the other hand, a guide rail 25 provided inside the rear parts 15, 15
A cargo handling mast support member 29 that is integral with the cargo handling mast 27 is disposed therein. The support member 29 is supported by a plurality of rollers 31 that can run along the guide rail 25, and the range of movement forward (arrow A) is limited to a stopper 33 provided on the front half 19 and a roller on the front end side. 31 is regulated by contact. Thereby, sufficient work space can be created in the front of the vehicle body 1.

The cargo handling mast 27 consists of an outer mast 35 and an inner mast 37 supported by the mast 35. The lower end of the outer mast 35 is fixed to the cargo handling mast support member 29, and a connecting rod 39 is provided above the side wall 35a. However, mounting brackets 41 are provided below the side walls 35a. Engagement hole 39a formed in connecting rod 39
is the mounting hole 4 provided on the side of the case 5 of the vehicle body 1.
3 is bolted to 45. Furthermore, the mounting bracket 41 is attached to the supporting leg 1 by means of fixing bolts 47.
Fixed bracket 49 provided on the rear half 15 of 3
It is removably connected to the

The inner mast 37 supported by the outer mast 35 is movable up and down by a lift cylinder (not shown), and a carriage 51 is supported on the front surface. The carriage 51 is
It has a link mechanism 53 and a fork 55 that can be extended and contracted forward by a hydraulic device (not shown), one end of the link mechanism 53 being supported by the inner mast 37, and the other end supported by the backrest 57 of the fork 55. It's structured.

Note that 59 indicates an overhead guard for protecting the driver from falling objects, and is supported above the vehicle body 1. Reference numeral 61 indicates a power unit, for example, a battery. 63 indicates the rear wheel.

In the cargo handling vehicle 3 configured in this way, when carrying out cargo handling at the back of the pallet 21, if the vehicle body 1 is moved forward, the front half 19 of the supporting leg 13 will move toward the pallet 2.
1 without hitting the loading platform 23, and the vehicle body 1 can be brought close to the pallet 21. As a result, the carriage 51 can easily handle cargo at the back of the pallet 21. To repair or inspect the cargo handling control section 7, the cargo handling mast 27 is moved forward until it hits the stopper 33 after removing the connecting rod 39 and the mounting bracket 41. At this time, sufficient work space is secured in the front of the vehicle body 1, so
By removing the front panel 9, repairs and inspections can be easily performed from the front of the vehicle body 1.

〔Effect of the invention〕

As explained above, according to the cargo handling vehicle of the present invention, firstly, the low supporting legs in the front half can be inserted into the lower part of the pallet, and furthermore, by extending and contracting the carriage, items at the back of the pallet can be handled. Secondly, the mast is stable during cargo handling operations, and thirdly, when performing maintenance, by removing the mast attachment, the mast can be moved forward to create a large work space in front of the vehicle body, allowing for repair of the cargo handling control section. This has the effect of making it easy to replace the battery.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a cargo handling vehicle showing a conventional example, Fig. 2 is a side view of a cargo handling vehicle showing another conventional example, Fig. 3 is a side view of a cargo handling vehicle according to the present invention, and Fig. 4 is a side view of a cargo handling vehicle according to the present invention. The same perspective view as above and FIG. 5 are operation explanatory diagrams. Explanation of main drawing symbols 1... Vehicle body, 5... Front case, 7... Cargo handling control section, 13... Support legs, 15... Rear half, 19... Front half, 27... Cargo handling mast, 51... Carriage.

Claims (1)

[Claims] 1 A vehicle body in which a cargo handling control section is provided in the front case, a pair of supporting legs extending in the lower front of the vehicle body and long in the longitudinal direction with the front half having a lower ground clearance than the rear half, and an intermediate an outer mast whose lower part is removably attached to the vehicle body and to the rear half of the support leg, and which is supported by the support leg so as to be movable forward within a predetermined range when detached from the vehicle; A cargo handling vehicle consisting of an inner mast and a carriage supported by the inner mast via a link mechanism so as to be extendable and retractable back and forth by a hydraulic device.