JPH1121990A - Concrete lid removal machine for gutter - Google Patents

Abstract

(57) [Summary] [Purpose] The lid can be attached and detached with or without a handle, and it can be used in a U-shaped groove with a small gap under the lid, such as a large-diameter piping groove for oil supply and water supply. In addition, to place the removed lid on the floor, it must be laid horizontally in close contact and can be used for passages. [Constitution] Using a lid retainer 10 provided on an arm 6 as an upper fulcrum, and using two claws 7, 7 'as a lower fulcrum, one side of the lid is supported independently of handling, while the lower part of the operation shaft 2 and the arm 6 are supported. A three-point support device in which the lid is slightly inclined and fixed by its own weight because the lid is slidably fastened to support the center of gravity of the lid, and the operating shaft 2 penetrates through the operating housing 4 and the upper handle 1, the operation housing 4 is rotatable while supporting the load applied to the operation shaft 2. When the handle 5 fixed to the operation housing 4 is lifted and the operation handle 1 is turned, the lid is rotated 180 degrees. ° It consists of a rotating device that can change the direction, so that the lid can be securely grasped without using a hand and can be used for a passage on the laid-down lid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gutter or pit cover for use in detaching a concrete lid for a gutter.

[0002]

2. Description of the Related Art FIG. 7 shown in Japanese Patent Application Laid-Open No. 05-9970.
As shown in the figure, after inserting and fixing the hooks 50 and 60 in the handles on both sides of the lid, the handle of the frame 10 suspended in the groove is turned, and the lid is lifted and rotated 90 ° to be lowered, or while holding, the frame and A method is known in which the grip portion 41 is gripped and carried after the engagement portion 43 is removed.

FIG. 8 shown in JP-A-5-213423
As shown in the figure, the hook 3a is inserted into a handle on one side of the lid, the lid is fixed at three points with the claw 3b serving as a lower fulcrum, and the bulges 5 and 5 serving as an upper fulcrum. 130 °
There is known a method of lifting a bent portion of a bent main handle 6 as a fulcrum of a lever.

[0004]

The lid is shown in FIGS.
As shown in (d), there is not always a trick, and there are places in shopping streets and the like that do not use high heels to prevent them from stepping on. It is an essential condition for the conventional product that the handle is on both sides as shown in FIG. 7 or that it is on one side as shown in FIG. If not, the gap must be opened by prying with a crowbar or the like, and there is a risk of unnecessary labor and damage to the lid. In particular, in the case of FIG. 8, the “bulge” 5 is important, but it cannot be provided without any manipulation.

[0005] The conventional product is convenient when there is a space below, such as a sewer, but when the gap under the lid is very small, for example, the gap above the pipe in a large-diameter pipe for oil supply and water supply. However, sometimes hands and nails do not fit.
It must be able to cope with any of these cases.

[0006] A problem with the environment is how to place the removed lid. In order to make it easier to insert hands and nails in consideration of mounting performed later, it is common to place the lid next to the side gutter in a shogi-like shape, but this hinders traffic.
It is often on the side of the road, but this is a major problem especially on narrow roads and workplaces at high places. Although they may be stacked or moved to another location, they still pose a problem in terms of obstacles to traffic and consumption of extra labor. It should be laid horizontally in close contact and used for aisles.

[0007] Regarding the preceding paragraph, there are some models in which the lid can be placed or attached depending on the model. However, none of the lids can be brought into close contact with each other, and a gap is formed by the thickness of the hook or the claw. In the case of a holiday, the total extension becomes longer by the amount of the gap, and the protruding lid must be processed. Even in the case of installation, the work of using a crowbar to adhere closely remains, which is extra labor.

At first glance, a model using wheels is convenient,
For example, it is subject to location restrictions such as requiring a place for turning or on a pavement road. In addition, general-purpose machines (cranes,
Backhoes, forklifts, etc.).

Therefore, the present invention enables lifting without regard to the presence or absence of a handle, and also allows a claw to be inserted even when the gap under the lid is very small. When placing a covered lid, it can be laid horizontally in close contact and used for aisles, with no place restrictions,
The task is to provide a labor-saving lid detacher.

[0010]

According to a first aspect of the present invention, there is provided a lid attaching / detaching machine, wherein one end of a slidable arm is firmly fastened to an operation shaft, and the other end is adjustable in height. In a lid detacher which vertically branches downward into an inverted Y-shape and serves as a lower fulcrum, and supports the lid at the three points, the operation shaft 2 can be positioned on the center of gravity of the lid. The arm 6 can be lifted by sliding the arm 6 tightly, and the lid supported at the three points can be slightly outwardly inclined by its own weight, so that only one side is independent of the handle of the lid. FIG.
(A) to (d) can be used in any case regardless of the presence or absence of a handle. Also, since the center of gravity is supported in addition to the three-point support, it is stable during lifting and moving. .

According to a second aspect of the present invention, the slidable one end of the arm 6 is firmly fastened to the operation shaft 2 and the other end of the arm 6 can be adjusted in height. The operation shaft 2 penetrates through the inside of the operation shaft housing 4 and the operation handle 1 is securely fastened to the upper portion, and the pawls 7 and 7 'serving as lower fulcrums are branched to form a support at three points. The operation housing 4 supports the operation shaft 2 while supporting the weight of the lid on the operation shaft 2.
When the lid supported at the three points is lifted by the handle 5 and the operation handle 1 is rotated in the lid detacher which is rotatable and fixed to the handle 5, the lid becomes freely rotatable about the operation shaft 2. The time when the laid lid is lifted and the time when the lid is put away are the lid removal machine characterized in that the direction of the arm 6 and the lid is changed by 180 °.
If the lid is lifted and rotated by 180 ° as described above, and then moved down to the holiday storage area as shown in FIG. 4, the lid can be laid in close contact with the lid. When the lid is restored, the reverse operation may be performed. However, as shown in FIG. 5, the lid is laid horizontally in close contact with the ground, so that there is naturally room for inserting the claws 7, 7 '. Absent. 15-20 at one end with bar 21
mm and then insert the claws 7, 7 '.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION

Adjustment before work First, before work, adjust according to the thickness and length of the lid. For the thickness, turn the adjustment handle 8 and
The length h of the upper surface of 7 'and the lower surface of the lid retainer 10 is adjusted with a margin so as to be 5 to 10 mm larger than the thickness of the lid. This allowance is to improve workability and that the lid is slightly inclined by its own weight so that the lower surface of the lid 10, the inner rectangle of the arm 6, and the claws 7, 7 '.
Since it is for fixing at three places at the tip of the above, it may be appropriate. The length is determined by the slide groove 11 so that the operation shaft 2 is located on the center of gravity of the lid, and the nut 12 is tightly fastened. This adjustment may be performed only once for lids having the same thickness and length, and may be adjusted again when a different lid is used in another work place.

Lifting and movement As shown in FIG. 3, the first sheet of the laid lid is lifted by human power so that the claws can easily enter, and one side of the second and subsequent sheets is released. . In this state,
Insert the claws 7, 7 'of the arm 6 and the lid retainer 10, and use the hook 3 for power or the handle 5 for manual power.
If lifted with, the lid is lifted almost horizontally.

After that, it may be rotated by 180 ° at the lifted position, or may be moved to a predetermined storage place and then rotated. That is, the arm 6 is rotated by 180 ° from the position shown in FIG. 3 to the position shown in FIG. When the lid is restored, the reverse may be performed.

As shown in FIG. 4, the lid is set aside, and the claws 7, 7 'are removed. Since the arm 6 has already been rotated by 180 °, there is no obstacle in the extracting direction, and the arm 6 can be extracted lightly.

As shown in FIG. 5, since the lid is laid horizontally in close contact with the ground, there is naturally no room for inserting the claws 7, 7 '. After raising one end by 15 to 20 mm with the burl 21, the claws 7, 7 'are inserted.

[0017]

1 is a side view and a front view of FIG. 1 and FIG. 2 is a sectional view of an operation shaft 2 and an operation shaft housing 4.
One end of the slidable arm 6 is attached to the lower end of the operation shaft 2, and the dimension 1 between the center of the operation shaft 2 and the inner rectangle of the arm 6 is determined. The structure of the slide may be a known technique. The other end of the arm 6 branches vertically downward through a horizontal portion into an inverted Y-shape, and each end is provided with a claw 7, 7 '.
The shape of the nail is 50mm wide, 100mm long, 20m thick
m (the tip is 10 mm), but may be changed appropriately so as to have sufficient strength with respect to the weight of the lid and to be inserted into the gap under the lid. The adjusting handle 8, the screw shaft 9, and the lid retainer 10 are provided on the horizontal portion of the arm 6 so as to be on the center line of the claws 7 and 7 ′ and inside the dimension A from the tip of the claws. The dimension h between the lower surface of the lid holder 10 and the upper surfaces of the claws 7 and 7 ′ is adjustable by turning the adjustment handle 8.

The lid has a thickness of 35 to 125 mm and a length of 500
The size A is 60 mm and h is 40 to 13 mm, since the most frequently used is about 600 mm and a weight of 30 to 92 kg.
0 mm, l is 250 to 300 mm, but the thickness of the lid,
It may be changed appropriately according to the length.

The operating shaft 2 is mainly composed of a pipe for weight reduction.
A round operating handle 1 is firmly fastened to the upper part. The hook hook 3 is fixed to the operation handle 1, but may be detachable. The operating shaft and the same diameter portion 14 are located below the operating shaft 2 penetrating the operating shaft housing 4 and are fixed to the pipe portion of the operating shaft 2 by welding. Processing. A thrust bearing 13 is fitted into a shaft portion 15 integrated with the operation shaft and the same diameter portion 14, and a bolt 16 also integrated with a special washer 17 for preventing infiltration of rainwater.
And the arm 6 are securely fastened by the nut 12.
In addition, as a means for preventing rainwater from entering the special washer 17, a seal rubber or a labyrinth may be used.

The operation shaft housing 4 is formed of a pipe and is fixed to the housing bottom plate 18 by welding. The housing bottom plate 18 is a disc having an appropriate thickness between the thrust bearing 13 and the special washer 17 so as to have a clearance when the shaft portion 15 rotates and to support the load of the lid. The housing cap 19 is at the uppermost part of the operation shaft housing 4, is screwed with the operation shaft housing 4, and a seal rubber 20 is inserted into a portion that comes into contact with the operation shaft 2 to prevent rainwater from entering. A handle 5 is fixed to an upper portion of the operation shaft housing 4. When the shape of the handle 5 is, for example, a straight pipe shape, it may be expandable and contractible. When the handle 5 is turned and the operation handle 1 is turned, the operation shaft 2 becomes 36
It is freely rotatable by 0 °.

[0021]

The present invention can be applied not only to concrete (with or without a handle) but also to any material and shape, such as grating and steel plate, because the cover is not used.

When the lid is laid off, the lid can be laid horizontally on the ground and in close contact with the lid, so that it does not hinder the environment even if it is used for a passage.

Since the lid is securely grasped and fixed, and the center of gravity is lifted, the lid is stable, there is no accident such as the lid coming off and falling, and the safety is remarkably improved.

The shape of the claws 7, 7 'is 50 mm wide and 10 cm long.
Since it is 0 mm, the thickness is 20 mm (the tip is 10 mm), and it has sufficient strength with respect to the weight of the lid, for example, in a large-diameter pipe for oil supply and water supply, the gap at the top of the pipe is very small. Even in such a case, a claw is formed and work can be dealt with in a U-shaped groove or a pit for any use without any trouble.

The work method can be selected by power or manual power.
Labor saving can be achieved.

[Brief description of the drawings]

FIG. 1 is an overall side view and front view.

FIG. 2 is a sectional view of a portion shown by a dashed line in the side view of FIG. 1, and is a sectional view of the operating shaft 2 and the housing 4;

FIG. 3 is an action diagram in a gutter.

[Fig. 4] Operation diagram of installation at a holiday place

[Fig. 5] Operation diagram of removal from the camp place

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operation handle 2 Operation shaft 3 Hook hook 4 Operation shaft housing 5 Handle 6 Arm 7, 7 'claw 8 Adjustment handle 9 Screw shaft 10 Lid holder 11 Slide groove 12 Nut 13 Thrust bearing 14 Same diameter portion as operation shaft 15 Shaft 16 Bolt 17 Special washer 18 Housing bottom plate 19 Housing cap 20 Seal rubber 21 Bar

FIG. 6: Types of gutter lids

[Explanation of symbols]

(A) U-shaped groove lid (Reinforced concrete U-shaped lid) JI
SA5334 (b) Reinforced concrete gutter for road JI
SA5346-2 class (c) NK-LU side groove cover
Company standard (d) Concrete lid B type for water main pit
Company Standards 1

FIG. 7 shows the structure of a conventional gutter cover handling tool.

[Explanation of symbols]

 10 Frame 41 Grip 43 Engagement 50, 60 Hook

FIG. 8 shows the structure of a conventional device for lifting a gutter lid.

[Explanation of symbols]

 3a hook 3b claw 5,5 bulge 6 main handle

Claims (2)

[Claims] 1. An upper fulcrum 10 in which one end of a slidable arm 6 is securely fastened to the operation shaft 2 and the other end is adjustable in height.
Claws 7 and 7 ′ that branch downward into an inverted Y shape and serve as a lower fulcrum
The concrete lid for gutter (hereinafter referred to as lid)
Is lifted by sliding the arm 6 so that the operating shaft 2 can be positioned on the center of gravity of the lid, and the center of gravity of the lid can be lifted.
A lid detaching machine characterized in that the point-supported lid is slightly outwardly inclined by its own weight, so that it is fixed on only one side irrespective of the handling of the lid. 2. An upper fulcrum 10 in which one end of a slidable arm 6 is tightly fixed to the operation shaft 2 and the other end is adjustable in height.
Claws 7 and 7 ′ that branch downward into an inverted Y shape and serve as a lower fulcrum
The operation shaft 2 penetrates through the inside of the operation shaft housing 4 and tightly fastens the operation handle 1 at the upper part. While being rotatable with the operation shaft 2 while supporting
When the lid supported at the three points is lifted by the handle 5 and the operation handle 1 is turned, the lid can be freely rotated around the operation shaft 2 to lift the laid lid. The lid detaching machine is characterized in that the direction of the arm 6 and the lid is changed by 180 ° when the lid is set aside.