Open / close device for lid

Abstract

To provide an open / close device for a lid capable of reducing load and time for an operator and allowing work to be carried out safely.SOLUTION: An open / close device 10 of a lid in accordance with an embodiment is provided with a pair of lower lateral frames arranged parallel to the ground surface with wheels allowing its parallel movement to the ground surface; a pair of vertical frames erected on each of the pair of lower lateral frames; an upper lateral frame crossing over the pair of the vertical frames; a driving part arranged on the upper lateral frame; and a suspending part moving up / down in a vertical direction to the ground by the driving part to suck the lid through magnetic force.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] An embodiment of the present invention relates to a lid opening and closing device. [Background technology]

[0002] Large-capacity tanks and other containers installed in large-scale plant facilities are often used for maintenance, etc. A manhole is installed to allow people to enter the container, and is closed with a lid during normal operation. Manholes for sewage and wastewater installed on general roads are also closed. Similarly, these manholes are normally closed by covers. For strength reasons, they are often made of metal, and some weigh more than 100 kg.

[0003] Previously, workers had to remove or install these lids by hand. When the lid was heavy, multiple workers could carry it to make work easier.

[0004] In addition, in Patent Document 1, a cover is fixed by screws and the hydraulic pressure from the hydraulic pump is used as a power source. Manhole covers and handhole covers that are not held by the worker's hands, such as when the cover is lifted by hand. Switchgear such as the above have been proposed. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2003-193497 A Summary of the Invention [Problem to be solved by the invention]

[0006] As mentioned above, when removing or installing the lid, the worker must hold the lid by hand. This is time-consuming and labor-intensive, and if the lid is heavy, it may injure workers if it is dropped. There was also a safety issue.

[0007] In addition, in the opening and closing device for manhole covers, hand hole covers, etc. described in Patent Document 1, Although the worker does not need to hold the lid by hand, the worker must screw the lid onto the hanging part. In addition, the equipment itself is equipped with a hydraulic pump, so maintenance of the equipment is difficult. If the device malfunctions, it will be impossible to open or close the lid. There is a problem that [Means for solving the problem]

[0008] In order to solve the above problem, the cover opening and closing device according to the embodiment is a device that is flat against the ground. A pair of lower horizontal frames parallel to the ground and equipped with wheels for enabling row movement; A pair of vertical frames are provided on each of the lower horizontal frames, and An upper horizontal frame is disposed between the upper horizontal frame and a drive unit is provided on the upper horizontal frame. The movable part moves up and down perpendicular to the ground and has a hanging part that magnetically attracts the lid. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a front view of a cover opening and closing device according to an embodiment; [Diagram 2] FIG. 1 is a top view of a cover opening / closing device according to an embodiment; [Diagram 3] FIG. 1 is a side view of a cover opening and closing device according to an embodiment; [Figure 4] FIG. 3 is a schematic diagram of the lid opening and closing device according to the embodiment in a state before lifting the lid, taken along the line A-A' in FIG. 2; [Diagram 5] FIG. 3 is a schematic diagram of the lid opening / closing device according to the embodiment lifting the lid, taken along the line A-A' of FIG. 2; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, embodiments for carrying out the invention will be described with reference to the drawings.

[0011] FIG. 1, FIG. 2, and FIG. 3 are a front view, a top view, and a side view of a cover opening and closing device according to an embodiment of the present invention, respectively. A cover opening and closing device according to this embodiment will be described.

[0012] The lid opening and closing device 10 according to the embodiment includes a hanging part 11 that sucks the lid, the sucked lid and the hanging part A drive unit 12 for lifting the lid 11, and a regulating unit 1 for regulating the movement of the lifted lid. 3. A lower horizontal frame 14 that forms the main body of the cover opening and closing device 10. The vertical frame 15 is a support for installing the upper horizontal frame 16, and the drive unit 12 is The upper horizontal frame 16 is a stand for installing the device, and the cover opening / closing device 10 is a stand for moving the device. A gripping portion 17, which is a so-called handle, for preventing the wheels of the cover opening / closing device 10 from coming off the wheels. It is equipped with a frame 18 to prevent the wheels from coming off.

[0013] The lower horizontal frame 14 is a main body of the lid opening and closing device 10 according to the embodiment, and is shown in FIG. As shown in Figures 2 and 4, a pair of lower horizontal frames are installed parallel to the ground. The lower horizontal frame 14 is provided with a pair of restricting members 13 that are stretched across the lower horizontal frame 14. 1 and 3, the lower horizontal frames 14 are provided on their upper sides with a pair of A pair of vertical frames 15 are provided. As shown in Figs. 1 and 3, the wheels are also The frame 14 is provided with a pair of vertical frames 15. An upper horizontal frame 16 is provided on the upper part of the vertical frame 15. A gripping portion 17 is provided, so that the cover opening / closing device 10 can be moved by hand by an operator. Furthermore, as shown in Figs. 1, 2 and 3, the lowermost part of the lower horizontal frame 14 is provided with a wheel derailment prevention device. A support frame 18 is provided.

[0014] The wheels enable the cover opening / closing device 10 to move parallel to the ground. In this embodiment, the distance between adjacent wheels is set to be longer than the diameter of the lid to be opened and closed. The wheels are formed in a shape similar to that of the wheels, and are installed in four places. The forward and backward directions of the wheels are constant, and in this embodiment, The direction of the wheels is fixed in the direction in which the handle 17 is pulled, so the movement of the cover opening and closing device 10 is The movement direction is limited to only the direction parallel to the direction in which the gripper 17 is pulled. When the wheel rotates in any direction, the lid opening and closing device 10 closes the lid by lifting it up. There is a risk that the wheels may slip off into the opening of a manhole or that a worker may get their foot caught in the opening. This is because.

[0015] The wheels may rotate in any direction (360°). This allows the cover opening / closing device 10 to move in any direction, rather than just in one direction, improving the operability of the cover opening / closing device 10. There is also another advantage.

[0016] The vertical frame 15 is a support for installing the upper horizontal frame 16, and the lower horizontal frame The upper horizontal frame 16 is installed across the pair of vertical frames 15. However, the upper horizontal frame 16 may be fixed to a pair of vertical frames 15 or may be fixed to a pair of vertical frames 15. It may be provided so as to be vertically movable along the vertical frame 15. When there is only one vertical frame 16, two vertical frames 15 are provided. In the case where two hanging parts 11 are required for a heavy object, two upper horizontal frames 16 are required. Therefore, four vertical frames 15 are required.

[0017] The upper horizontal frame 16 is a frame for mounting the drive unit 12. An upper horizontal frame 16 is hung over the upper horizontal frame 5. The lever block which is the driving unit 12 (registered trademark), for example, is attached by hanging it on an eyebolt provided on the upper horizontal frame 16 as shown in Fig. 3. Note that there are also cases where a hanging hole is provided on the upper horizontal frame 16, and the drive unit 12 is directly attached to the upper horizontal frame 16, and the attachment method is not limited to the one described in the embodiment.

[0018] The grip portion 17 is a so-called handle. When an operator moves the cover opening / closing device 10, By holding the grip 17 and moving the cover opening / closing device 10 in a direction parallel to the direction of pulling, the wheel The movement can be controlled to move the lid opening / closing device 10.

[0019] The wheel-off prevention frame 18 is disposed below the lower horizontal frame 14 as shown in FIG. 1, FIG. 2 and FIG. 3. When the wheel comes off and falls, the wheel-off prevention frame 18 is installed on the side of the manhole, etc. The amount of the cover opening / closing device 10 falling over or falling into the opening is controlled by catching it on the edge of the opening. In addition, the foot of the operator of the lid opening / closing device 10 is attached to the hanging portion 11 of the lid. It also serves the purpose of preventing people from reaching underneath it, so the structure is designed with safety in mind.

[0020] The hanging portion 11 provided in the cover opening and closing device 10 according to the embodiment is a so-called permanent magnet type lifting device. A permanent magnet type lifting magnet is a type of magnet that uses magnetic force to lift steel objects. This is a lifting device that can adsorb objects and is used to lift and transport heavy objects. The permanent magnet type lifting magnet, for example, is provided with a plurality of divided permanent magnets. By rotating some of the permanent magnets by operating a lever, etc., the magnetic fluxes of the magnets are cancelled out. By magnetizing it, it is possible to detach attracted steel objects.

[0021] By using the hanging part 11 according to the embodiment, when the lid is lifted up, the hanging part and the lid are screwed together. There is no need to fix it with a screwdriver, and it can be attached and detached by operating the lever. This makes it easier.

[0022] In addition, there are also cases where electromagnet-type lifting magnets are used. A footing magnet is a magnet that is excited by passing electricity and can attract steel objects with its magnetic force. This is a lifting tool that can lift and transport heavy objects. When the electricity to the net is cut off, it becomes de-energized, allowing the attracted steel object to be released. Cut.

[0023] Electromagnetic lifting magnets, like permanent magnet lifting magnets, When lifting the lid, there is no need to fasten the lid to the lifting part with screws. Adsorption and detachment can be performed by turning the switch OFF, making the operation easier.

[0024] In addition, any type of lifting magnet that is attracted by magnetic force can be used. It is possible and is not limited to the above mentioned forms.

[0025] The driving unit 12 according to the embodiment can move the hanging unit 11 up and down by manually operating a lever. For example, Lever Block (registered trademark). The reel is equipped with a metal chain, and the chain is wound up by rotating the lever. The lifting of the steel lid attached to the lifting part 11 at the end of the chain The drive unit 12 is a drive device that can switch the ratchet mechanism provided in the drive unit 12. By rotating the lever, the hanging part 11 and the steel It is also possible to lower the cover. In the embodiment, a lever block is used. However, this may be another driving device such as a pulley, chain block, electric hoist, etc. I don't.

[0026] As shown in FIG. 2, the restriction portion 13 is an aluminum plate mounted on a lower horizontal frame 14 (to be described later). As shown in FIG. 1, the frame is made of aluminum. It is installed at the bottom of the cover opening and closing device 10. The height of the lid is the same as that of the lid when it is lifted by the drive unit 12. As shown in FIG. 4, the regulating portion 13 is provided to regulate the movement (swing) of the lifted lid. The regulating portion 13 allows the lid opening / closing device 10 to be suspended even when it is being moved. The steel lid attached to the support 11 does not swing significantly, and the steel lid does not hit the worker. In addition, the robot may collide with a structure, causing damage to the structure, or may come off the suspending portion 11. This can be prevented.

[0027] The restricting part 13 is fixed to the lower horizontal frame 14 with a screw, so the mounting position can be changed. The width (spacing) of the regulating portion 13 is variable according to the diameter of the lid to be lifted. For example, in the case of a circular cover having a diameter of 900 mm, the width (spacing) of the restricting portion 13 is set to about 600 mm. By doing so, it is possible to appropriately regulate the movement of the lifted lid. In the case of a circular cover with a diameter of 800 mm, the width (spacing) of the restricting portion 13 is set to about 400 mm. This makes it possible to appropriately regulate the movement of the lifted lid. The width of the restricting portion 13 can also be changed to accommodate any lid size. is possible.

[0028] The material of the restricting portion 13 is preferably a non-magnetic material that is not magnetized. If it is, the hanging part 11 may be attracted to the restricting part 13, and the lid may not be able to be lowered. The material is not limited to aluminum, and may be any material having magnetic properties such as stainless steel. Any material that does not rust may be used.

[0029] Next, FIG. 4 is a schematic diagram of the state before the cover opening and closing device according to the embodiment lifts the cover. FIG. 5 shows a schematic diagram of the state in which the lid opening and closing device according to the embodiment lifts the lid. I will explain this in more detail.

[0030] Here, the steel cover 21 shown in FIG. 4 and FIG. 5 is, for example, a steel cover installed on a general road. For maintenance of underground sewers, drainage channels, electrical cables, communication cables, gas pipes, etc. Metal covers to cover manholes for access or to maintain large volume containers. A metal cover used to cover a manhole to access the inside of a container for maintenance, etc. There are some.

[0031] As shown in FIG. 4, the cover opening / closing device 10 has a lifting magnet 11. The magnetism is exerted and the steel lid 21 is attracted to the lever of the lever block which is the driving unit 12. The steel lid 21 is lifted up by rotating the lifting rod. As shown in FIG. The chain of the lever block, which is the drive unit 12, is lifted up until it comes into contact with the control unit 13. The steel lid 21 is appropriately regulated by being pulled by the force of the . The device 10 is moved to a predetermined location while the steel lid 21 is kept in a lifted state. Then, the steel lid 21 can be transported to the designated location.

[0032] When installing the steel cover 21, the lever brake, which is the drive unit 12, is placed over the opening of the manhole or the like. The lock lever is rotated to lower the attracted steel lid 21, and the hanging part 11 is de-energized. This allows the steel cover 21 to be placed on the opening.

[0033] According to the embodiment, the following effects can be obtained.

[0034] When removing or installing the lid, there is no need for the person to hold the lid by hand, which saves time and effort. This not only reduces the amount of waste, but also ensures safety in case the lid is dropped.

[0035] In addition, the cover required for the manhole cover and hand hole cover opening and closing device described in Patent Document 1 is This reduces the screw tightening work required to secure the pump to the hanging part, and eliminates the need for frequent maintenance such as hydraulic pumps. Since it does not have a drive unit that requires maintenance, the maintenance work for the device can be reduced. This also greatly reduces concerns about the system ceasing to function due to a malfunction.

[0036] Although the embodiment of the present invention has been described above, this embodiment is presented as an example. The present invention is not intended to limit the scope of the present invention. It is possible to carry out the present invention in various forms, and various omissions and substitutions may be made without departing from the spirit of the invention. The present embodiment and its modifications are within the scope and spirit of the present invention. and are included in the scope of the invention described in the claims and their equivalents. [Explanation of symbols]

[0037] 10: Lid opening / closing device, 11: hanging part, 12: drive part, 13: regulating part, 14: lower horizontal frame 15: Vertical frame, 16: Upper horizontal frame, 17: Grip, 18: Frame for preventing wheel from slipping off M, 21...Steel lid

Claims

1. A pair of lower horizontal frames parallel to the ground and equipped with wheels that enable translation relative to the ground. And, A pair of vertical frames erected on each of the pair of lower horizontal frames; An upper horizontal frame suspended between the pair of vertical frames; A drive unit provided on the upper horizontal frame; A hanging part that moves vertically up and down relative to the ground by the driving part and magnetically attracts the lid; A lid opening and closing device comprising:

2. The hanging part is magnetized by energization to attract the lid, and is demagnetized when the energization is cut off. and an electromagnet for releasing the attracted lid. The cover opening and closing device according to claim 1.

3. The lower horizontal frame is provided between the pair of lower horizontal frames, and the lid is hung on the hanging portion. The regulatory department that regulates The cover opening and closing device according to claim 1 or 2, further comprising:

4. The restricting portion is attached to the lower horizontal frame at a position that is adjusted according to the size of the lid to be attracted. It is mutable, The cover opening and closing device according to claim 3.

5. The restricting portion is made of a non-magnetic material. The cover opening and closing device according to claim 4.

6. The drive unit is a drive device that can move the hanging unit up and down by manually operating a lever. be, The cover opening and closing device according to claim 1 or 2.

7. The distance between adjacent wheels of the wheels is longer than the diameter of the lid to be opened and closed. The direction in which the wheels move is fixed relative to the lower horizontal frame, and the forward and backward directions are constant. 、 The cover opening and closing device according to claim 1 or 2.

8. The lower horizontal frames are provided adjacent to each other and below the lower horizontal frames, and an opening A wheel-off prevention frame that limits the amount of the wheel falling when the wheel falls to the wheel-off prevention frame. The cover opening and closing device according to claim 7, further comprising:

9. A gripping portion provided on the lower horizontal frame for controlling the movement of the wheel, The cover opening and closing device according to claim 1 or 2, further comprising:

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