JPH06316398A - Cargo handling machine - Google Patents

Abstract

PURPOSE:To provide a cargo handling machine which is designed to facilitate work to handle cargoes, such as a containing bag for rice, beans, and sugar, reduced in size and weight and formed in a constant shape, and can be manufac tured at a low cost. CONSTITUTION:A crane device 111 lelevated by means of an elevating cylinder 125 operated by means of fluid and arranged movably and revolvably through manual operation is mounted on an under carriage 95. A grasping device 141 having nipping arms 161 and 161 between which a cargo 139 is nipped from both sides by means of a nipping cylinder 167 operated by means of fluid is suspended from the crane device ill. The change-over switches 179 and 181 of solenoid valves 173 and 175 by means of which the elevating cylinder 125 and the nipping cylinder 167 are respectively operated are mounted on a handle 177 fixed to the grasping device 141.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention performs a lifting operation by a fluid cylinder, and mainly performs a cargo handling work such as storing and carrying out lightweight, small-sized and same-sized cargo such as a storage bag for rice, sugar, soybean, etc. in a warehouse. It relates to a cargo handling machine for.

[0002]

2. Description of the Related Art Conventionally, in a cargo handling machine of this type, a crane device 3 having a gripping device 1 suspended at its tip as shown in, for example, FIG. That is, the gantry 9 is mounted on the chassis 5 having the traveling position 7 so as to be horizontally rotatable. Engine 1 on chassis 5
1, a control stand 13 equipped with an operation lever device 12 and a control seat 1
5 are provided. The crane device 3 is configured as follows. That is, at the front end of the gantry 9, a bracket 19 that horizontally swings by the hydraulic cylinder 17 is provided.
Are pivoted by a shaft 21. The bracket 19 has a hydraulic cylinder 23 which allows the main boom 2 to swing vertically.
A lower end of 5 is pivotally attached by a shaft 27, and an upper end of an auxiliary boom 29 is pivotally attached by a shaft 31 to an upper end of the main boom 25 so as to be vertically swingable by a hydraulic cylinder 33. The gripping device 1 is suspended by the shaft 35 at the other end of the auxiliary boom 29.

The gripping device 1 is constructed as follows. That is, the link 37 pivotally attached to the shaft 35 is pivotally attached by the shaft 47 to the holding arms 43 and 45 which hold and release the load 41 by the hydraulic holding cylinder 39.

During the cargo handling work, the worker is in the cockpit 15
Sitting on the seat, the operating lever 12 of the cockpit 13 is operated to contract the holding cylinder 39 to hold the baggage 41 such as a storage bag with the holding arms 43 and 45, and then the other operating lever device 12 to move the hydraulic cylinder. The hydraulic pressure of 33, 23, 17 is controlled to move the luggage 41 to an appropriate position, the holding arms 43, 45 are opened, and the luggage 41 is placed at another place.

[0005]

As described above, in the conventional cargo handling work of this type, the holding, releasing operation, raising / lowering operation, horizontal movement and turning operation of the load are all operated by hydraulic pressure. For this reason, the following problems have been encountered in the loading and unloading work of small-sized light-weight luggage having a substantially constant size such as a storage bag.

(1) The operation is complicated and troublesome.

(2) Since the worker is located in the cockpit away from the luggage, the luggage cannot be accurately positioned,
Stacking work is difficult.

(3) The structure is complicated and the machine becomes expensive.

[0009]

According to the present invention, the lifting operation is powered by a lifting cylinder operated by a fluid pump, the holding arm is operated by a fluid holding cylinder, and horizontal movement and swiveling operations are manually performed. So that
Moreover, the changeover switch of the solenoid valve for operating the lifting cylinder and the holding cylinder is attached to the handle fixed to the holding device.

[0010]

According to the present invention, first, the holding position is moved with the holding arm opened right above the load placed on the ground. The height of the gripping position is controlled by operating the changeover switch mounted on the handle of the gripping device to control the solenoid valve of the lifting cylinder, and for horizontal movement, gripping the handle for movement provided on the gripping device to move and rotate. The gripping device is lowered, and when the changeover switch for the holding cylinder attached to the handle at the position where the holding arm sandwiches both sides of the luggage is operated, the solenoid valve operates and the holding cylinder moves the holding arm from both sides. Press and hold your luggage. Raise it, move it horizontally, place the load on the ground at an appropriate position, open the holding arm, and release the load.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. As shown in FIGS. 1 to 6, a compressor 99 driven by an electric motor 98 by an auxiliary battery 97 is provided at a rear portion of a chassis 95 having front wheels 91 and rear wheels 93.
Due to this, compressed air is stored in the air tank 101. The electric motor 103 that drives the front wheels 91 is the main battery 1
A steering handle 107 that uses 05 as a power source and that steers the rear wheels 93 is provided so as to be rotatable in the horizontal direction.

At the front part of the chassis 95, a loading platform 109 for loading luggage is provided, and at the center, a support platform 113 of a crane device 111 is supported rotatably in the horizontal direction. The crane device 111 is configured as follows. That is, the auxiliary boom 1 is attached to the upper end of the support base 113.
A main boom 119 in which the rear end of 15 is pivotally attached by a shaft 117.
The lower end of the is pivotally attached by a shaft 121. Support stand 11
3, the upper end of the piston rod 127 of the elevating cylinder 125 whose lower end is pivotally attached by the shaft 123 to the lower end of the link 1 whose one end is pivotally attached to the main boom 119 by the shaft 129.
It is pivotally attached to the other end of 31 by a shaft 133. The upper end of the main boom 119 is attached to the auxiliary boom 115 along the lower side of the main boom 119.
The lower end of the connecting rod 137 pivotally mounted by the shaft 35 is a shaft 133.
Is pivotally attached to. At the front end of the auxiliary boom 115, a gripping device 141 for gripping the luggage 139 is suspended by a shaft 143. The shaft 133 at the tip of the piston rod 127 has a working hole 14 that opens to the side wall of the support base 113.
5 is set so as to come into contact with the front line 147, and is set to move up and down along the front line 147. The gripping device 141 moves up and down in a substantially vertical direction. In FIGS. 1 to 3, the piston rod 127 extends and the shaft 133 works. Front 147 of hole 145
The shaft 143 at the tip of the auxiliary boom 115 is located at the position B1 at the position (A1) where it abuts against the upper end of the auxiliary boom 115. When the operator manually pushes the gripping device 141 from this state, the shaft 133 moves from the A1 position to the A1 ′ position at the upper end of the trailing edge 148 of the work hole 145, and the shaft 143 moves to the B1 ′ position. Further, at the position (A2) where the piston rod 127 is shortened so that the shaft 133 comes into contact with the lower end of the front line 147, the shaft 14 at the tip of the auxiliary boom is
3 descends to the B2 position. When the operator manually pushes the gripping device 141 from this state, the shaft 133 moves from the position A2 to the rear edge 14
The shaft 143 moves to the position A2 'at the lower end of 8, and moves to the position B2'.

The gripping device 141 is constructed as follows. That is, the support 151 is attached to the bracket 149 suspended by the shaft 143 at the tip of the auxiliary boom 115.
Is rotatably pivoted in a horizontal direction by a shaft 153, a horizontal horizontal girder 155 is fixed to the lower end of the support 151, and a support plate swingable up and down by shafts 157 at both ends of the horizontal girder 155. 159 is pivotally mounted, and a holding arm 16 for holding a load 139 is attached to an outer end portion of the lower surface of the support plate 159.
1 is stuck. A bracket 163 is fixed to the upper surface of the support plate 159 and fixed to the support 151.
65 and the holding cylinder 167, the shaft 169, 17
Pivoted by 1.

The support 151 has a lifting cylinder 125.
Electromagnetic valves 173 and 175 for operating the holding cylinder 167 are mounted. In addition, the support 15
A handle 177 is fixed to the handle 1, and changeover switches 179 and 181 for changing the solenoid valves 173 and 175, respectively, are fixed to the handle 177.

In the above embodiment, when carrying out the cargo handling work, the holding arms 161 and 161 are moved to a position directly above the luggage 139 such as a storage bag placed on the ground with the holding arms 161 and 161 open. The worker stands near the gripping device 141,
By operating the changeover switch 179, the operation valve 17
3 to switch the lift cylinder 125 to the air tank 10
When the pressurized air of 1 is sent and the crane device 111 is moved up and down, the gripping device 141 moves up and down in the vertical direction. The horizontal movement and turning are performed manually by gripping the handle 177. The gripping device 141 is lowered from the position directly above the load 139, and the holding arms 161 and 161 move the load 139 to the load 139.
When it descends to a position close to the ground on both sides of, the changeover switch 181 is operated to switch the solenoid valve 175,
The holding cylinders 167 and 167 are extended to hold the load 139 by the holding arms 161 and 161.

Next, the gripping device 141 is raised to move the load 139 to a predetermined horizontal position and then lowered, and the holding arms 161 and 161 are opened to release the load 139.

[0017]

The present invention has the following effects.

(1) The power operation of the crane is only a lifting operation, so the operation is easy.

(2) Since the worker moves manually in the horizontal direction at a position close to the luggage, positioning is easy and accurate, and the bags are easily stacked.

(3) The structure is simple and can be manufactured at low cost.

(4) Even if the gripping device vibrates up and down due to the vibration of the air cylinder or the elasticity of the boom, the operating changeover switch mounted on the handle of the gripping device can be operated without pulsating.

(5) It is possible to easily release the loads from being held even when the loads are stacked.

[Brief description of drawings]

FIG. 1 is a side view of a cargo handling machine.

FIG. 2 is a plan view of the same.

FIG. 3 is an enlarged side view of the vicinity of the fluid cylinder.

FIG. 4 is a side view of a gripping device according to the present invention.

FIG. 5 is a front sectional view of the same.

[Fig. 6] Lifting cylinder, fluid circuit of the holding cylinder,
It is explanatory drawing of an electric circuit.

FIG. 7 is a side view of a cargo handling machine including a conventional gripping device.

[Explanation of symbols]

 95 Chassis 111 Crane device 125 Lifting cylinder 139 Luggage 141 Gripping device 161 Holding arm 167 Holding cylinder 173,175 Solenoid valve 177 Handle 179,181 Changeover switch

[Procedure amendment]

[Submission date] October 19, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

Claims (1)

[Claims] 1. A crane device 111, which is lifted and lowered by a fluid-operated lift cylinder 125 and is manually movable and pivotable in a horizontal direction, is mounted on a chassis 95.
A cargo-operated holding cylinder 167 allows the load 13
A holding device 141 having holding arms 161, 161 for holding 9 from both sides is suspended on the crane device 111, and the lifting cylinder 125 and the holding cylinder 1 are held.
A cargo handling machine, wherein changeover switches 179, 181 of electromagnetic valves 173, 175 for operating 67 and 67 are attached to a handle 177 fixed to the gripping device 141.