JPH0717717Y2 - Shield device for outdoor work - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial field of application] The present invention is used for a work site under bad weather conditions, so that it is mounted on a crane truck or a mobile truck used at the work site so that it can be movably stretched to any place. Alternatively, it relates to a shield device for outdoor work which can be directly fixed and stretched on the ground.

[0002]

2. Description of the Related Art When performing work such as civil engineering outdoors, when weather conditions such as rain, snowfall, or burning weather are bad,
You cannot do these tasks. For this reason, a temporary tent that covers the work place may be constructed in advance, but when constructing the tent, it is necessary to put in a predetermined number of personnel and it takes time to construct. For this reason, the inventor of the present invention has proposed and applied for a patent for a shielding device for outdoor work (Japanese Patent Application No. 62-1).
46771). In this outdoor work shielding device, a boom is extended from a base, and shields are stretched on arms extended on both sides of the boom.

[0003]

SUMMARY OF THE INVENTION In the above-mentioned outdoor work shielding device, the boom is extended from the base, the arms are extended on both sides of the boom, and the shield is stretched between the boom and the arm. However, there is a problem that the device becomes large and it takes time to stretch the shield. Therefore, in view of the above conventional circumstances, the present invention is a mobile outdoor work shield device that is detachably or fixedly attached to a mobile crane, and even if it becomes rainy during outdoor work, It is an object of the present invention to provide an outdoor work shielding device that can be quickly and easily installed in this outdoor work place to continue outdoor work.

[0004]

In order to solve the above problems, the present invention rotatably mounts a fluid pressure cylinder on the tip of a boom of a crane vehicle through tilting means, and the tip of the rod of the fluid pressure cylinder. The end portions of a plurality of bone members are rotatably connected to each other, a link member is rotatably connected between the outer periphery of the fluid pressure cylinder body and the bone member, and a shield is stretched on the surface of the bone member. The shield is folded or expanded by the expansion and contraction operation of the rod. Further, instead of the fluid pressure cylinder, a cylindrical support rod and a movable rod may be used. Further, the fluid pressure cylinder or the support rod is erected and fixed on the moving carriage or on the ground.

[0005]

[Function] Normally, a fluid pressure cylinder or a support rod is
Place the crane boom on the upper side of the collapsed complaint boom toward the rear side of the crane vehicle. Further, the bone member is folded into a position close to the fluid pressure cylinder or the support rod. In this case, the shield is in a contracted state.

When it is raining or burning, the mobile crane is moved to a work place. And, the complaint boom is extended. In this case, the height of the shield above the ground should be set appropriately by raising and lowering the boom. Then, the fluid pressure cylinder or the support rod is tilted by the tilting means to be extended upward. In this state, the rod or the moving rod is lowered. Along with this lowering, the bone member rotates upward and is in a state of being expanded. As a result, the shield is also expanded from the contracted state and stretched on the bone member. In this way, the tent is constructed above the place where work is to be performed in front of the mobile crane. Further, the tent is constructed above the place where the work is performed by operating the shield of the device standing on the carriage or standing on the ground as described above.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the first invention will be described with reference to FIGS. In these figures, truck cranes,
A shield 3 is provided at a tip end portion of a boom 2 which is provided in a crane vehicle 1 such as a rough terrain crane so as to be up and down and extendable. This shield 3 is configured as follows. The lower end of the fluid pressure cylinder 5 is rotatably connected to the tip of the boom 2 via a hinge 4. A rod 6 is provided on the fluid pressure cylinder 5 so as to be movable back and forth. Therefore, it is possible to selectively rotate between a state in which the boom 2 rises vertically upward and a state in which the boom 2 is folded down and stored on the upper surface of the boom 2. In this case, from the tip of the boom 2 to the boom 2
It may be placed on the side face down and stored. The fluid pressure cylinder 5 and the rod 6 may have a multi-stage configuration. At the upper end of the outer circumference of the fluid pressure cylinder 5,
One ends of a plurality of radially extending link members 8 are rotatably connected. Further, one ends of a plurality of bone members 9 are rotatably connected to the tip of the rod 6 and radially project. The other end of the link member 8 is rotatably connected to the skeleton member 9.

The plurality of skeleton members 9 are selectively operated according to the movement of the rod 6 in a folded state in which the rod member 6 is close to the rod member 6 and in an expanded state in which the rod member 6 is separated from the rod member 6. Further, a tent member 10 is provided which is connected to each of the bone members 9 and is stretched over the bone member 9 in the expanded state as a shielding means.

In this case, four skeleton members 9 are provided, and each skeleton member 9 is set to be expanded at an angle of 90 degrees with respect to the rod 6 so that the tent member 10 is expanded. The bone member 9 can be stretched to have a substantially quadrangular pyramid shape (see FIG. 4A). In addition, a large number of the bone members 9 are provided, and each bone member 9 is set to expand at an angle of 90 degrees or less with respect to the rod 6, so that the tent member 10 is a normal expanded bone member. It can be stretched to have a substantially conical shape like an umbrella (see FIG. 4B).

A motor 4 for tilting the fluid pressure cylinder 5 is interposed between the boom 2 and the fluid pressure cylinder 5. The motor 4 is driven by hydraulic pressure supplied from an electric mini pump (not shown). This mini pump is also driven by a battery power supply.
The motor 4 and the electric mini-pump constitute tilting means. The drive energy can also be taken from the mobile crane 1. Further, a cylinder may be interposed and connected between the boom 2 and the fluid pressure cylinder 5 as the tilting means.

Instead of the fluid pressure cylinder 5, a configuration as shown in FIG. 3 can be adopted. In this example, a support rod 51 is rotatably attached to the tip of the boom 2, and a movable rod 61 is configured to be movable back and forth inside the support rod 51. The moving rod 61 is an electric hydraulic conversion cylinder 70.
Is slid by. The electro-hydraulic conversion cylinder 70 is built in the support rod 51. In this case, as shown in FIG. 3, the cylinder body 71 of the electro-hydraulic conversion cylinder 70 is fixed to the lower end of the support rod 5, and the end of the operating rod 72 is connected to the lower end of the rod 61. This configuration can be adopted in other devices described later.

Next, the operation of the embodiment having the above construction will be described. Usually, as shown by the solid line in FIG.
The crane boom 1 is tilted to the rear side on the upper side of the claim boom 2. Further, the bone member 9 is folded in a position close to the fluid pressure cylinder 5 and the rod 6. In this case, the tent member 10 is in a contracted state.

In rainy or hot weather, the mobile crane 1 is moved to a place where work is to be performed. Then, the boom 2 is extended. In this case, the height of the interceptor 3 from the ground is appropriately set by raising the boom 2. And motor 4
Is operated to tilt the fluid pressure cylinder 5 so that the fluid pressure cylinder 5 extends vertically upward as shown in FIG. In this state, the rod 6 is lowered. When the rod 6 descends, the skeleton member 9 rotates upward and is supported by the link member 8 to be in an expanded state. As a result, the tent member 10 also changes from the contracted state to the expanded state and is stretched on the bone member 9 (see FIG. 1). In this way, the tent is constructed above the place where the work is performed in front of the mobile crane 1. When folding the tent member 10, the rod 6 is extended. Then, the bone member 9 is rotated downward and is in a contracted state. As a result, the tent member 10 is also folded from the expanded state to the contracted state.

According to the above construction, the tent can be quickly constructed even in the case of rain during work, and comfortable work can be performed under the tent without being affected by the weather even in bad weather such as rain, snowfall, or hot weather. In addition, the construction and movement of the tent can be done easily and quickly, so that the construction period can be prevented from being delayed and working conditions can be improved. In particular, since the mobile crane 1 is movable and the boom 2 can be swung and raised and lowered, the mobile crane 1 and the boom 2 can be moved even when the work place moves as the work progresses. It can be easily dealt with by turning or undulating.

That is, the work range can be expanded freely, and work can be easily improved in all work areas. Further, since the tent member 10 expands and contracts in accordance with the folding operation and the expanding operation of the skeleton member 9 and is automatically folded and stretched, the work of attaching and detaching the tent member 10 is not necessary. Yes, you can quickly respond to weather conditions. Furthermore, mobile crane 1
When the vehicle is traveling, the body is laid on the upper side of the complaint boom 2 in the prone state, and the bone member 9 and the tent member 10 are folded so that the obstacle does not occur during traveling.

The shield 3 may be detachable from the boom 2 and is convenient because the shield 3 can be mounted and used in various crane vehicles 1. Further, normally, the hydraulic source for the fluid pressure cylinder and the support rod may be supplied from the base machine, but in the present embodiment, the motor 4 and the electric mini pump are combined, and the electric hydraulic conversion cylinder 70 is adopted. The electric mini-pump and the electric hydraulic conversion cylinder 70 are driven by a battery power source. Therefore, it is not necessary to connect the crane vehicle 1 to the drive source of the shield 3, and the shield 3 can be easily attached to and detached from the crane vehicle 1. Further, if the electric mini pump and the electric hydraulic conversion cylinder 70 are configured to be operated wirelessly, various operations of the shielding device can be performed remotely.
Operability is good.

Next, one embodiment of the second and third inventions will be described with reference to FIGS. 6 and 7. The second idea is
The structure of the fluid pressure cylinder 5 is replaced with that of the first invention, and FIG.
As shown in FIG. 5, the fluid pressure cylinder 5 is vertically fixed to the base portion 12a of the movable carriage 12.

Further, in the third invention, the fluid pressure cylinder 5 is replaced with the construction of the first invention, and as shown in FIG. 7, the fluid pressure cylinder 5 is erected and fixed on the ground. In this case, in order to stably and vertically fix the fluid pressure cylinder 5, it is preferable to provide the reinforcing leg member 14.

Also in the configurations of the embodiments of these inventions,
Even in bad weather such as rainy weather, snowfall, or hot weather, you can work comfortably under the tent without being affected by the weather, and because the tent can be constructed easily and quickly, delays in the construction period can be prevented and working conditions can be improved. Can make improvements. Further, in particular, since the movable carriage is movable, the work range can be expanded freely, and work can be easily improved in a wide work area.

[0020]

[Effects of the Invention] According to the shielding device for outdoor work of each of the above inventions, comfortable work can be performed under the shield without being influenced by the weather, and the construction of the shield can be performed easily and quickly. Delays can be prevented and working conditions can be improved.
In particular, the shield expands and contracts in accordance with the folding and expanding operations of the bone member, so that folding and expanding are automatically performed.
It is not necessary to attach and detach the bone member, and it is possible to quickly respond to weather conditions and the like. Further, since the crane truck and the movable carriage are movable, and the boom can be swung and raised and lowered, the work range can be expanded freely and work can be easily improved in any work area.

[Brief description of drawings]

FIG. 1 is a front view showing an expanded state of a tent member according to an embodiment of the first invention.

FIG. 2 is a front view showing a folded state of the tent member of the above embodiment.

FIG. 3 is a sectional view of a support rod of another embodiment of the same as above.

FIG. 4 is a schematic plan view showing the form of a tent member.

FIG. 5 is a side view showing a mobile crane according to the embodiment.

FIG. 6 is a front view showing an embodiment of the second invention.

FIG. 7 is a front view showing an embodiment of the third invention.

[Explanation of symbols]

 1 Crane Truck 2 Boom 3 Shield 5 Fluid Pressure Cylinder 6 Rod 9 Bone Member 8 Link Member 10 Tent Member 11 Leveling Cylinder 12 Mobile Truck

Claims (4)

[Scope of utility model registration request] 1. A fluid pressure cylinder is rotatably attached to a tip end of a boom of a crane vehicle through tilting means, and ends of a plurality of bone members are rotatably connected to a tip end of a rod of the fluid pressure cylinder. A link member is rotatably connected between the outer periphery of the fluid pressure cylinder main body and the bone member, and a shield is stretched on the surface of the bone member, and the shield is folded or expanded by the expansion and contraction operation of the rod. Opening shield device for outdoor work. 2. A cylindrical support rod is rotatably attached to a tip end of a boom of a crane vehicle through tilting means, and a movable rod is extensible in the support rod. A rotatably connected end portion of the skeleton member, a rotatably connected link member between an outer peripheral portion of the support rod and the skeleton member, and a shielding member stretched on the skeleton member surface. A shield device for outdoor work in which the shield is folded or expanded by the expansion and contraction of the moving rod. 3. The outdoor work shielding device according to claim 1 or 2, wherein the fluid pressure cylinder or the support rod is erected and fixed to a base portion of a movable carriage. 4. The shielding device for outdoor work according to claim 1, wherein the fluid pressure cylinder or the support rod is erected and fixed on the ground.