KR200261611Y1 - an apparatus of opening and shutting a manhole cover - Google Patents

Abstract

The present invention relates to a manhole cover opening and closing device, in particular, can be easily and quickly work even by the worker alone, and relates to a manhole cover opening and closing device to prevent occasional safety accidents.

When explaining the configuration, the handle is provided on the upper side, the wheel is provided on the lower side, in the body frame provided with a plurality of support interval therebetween, between the main body frame is provided between the fixed support and the spiral support is formed in the center, the main body, Guide grooves formed inwardly of the frame, and a lifting platform provided to be capable of lifting and lowering along the guide grooves to the lower side of the fixing support, and a spiral shaft coupled to the spiral hole and joined at the lower end to the lifting platform and provided with a handle at the upper end. Manhole cover up and down part composed of, and the long hole provided on both sides of the platform, and inserted into the long hole is provided with a screw portion on the upper side and a fixing bar formed with a hook portion at the bottom, and a manhole cover composed of a fixing nut coupled to the screw portion It is characterized by having a government.

Therefore, the present invention can open and close the manhole cover easily and quickly even by the worker alone, so that efficient work can be performed, and it is configured to prevent occasional safety accidents, thereby reducing the psychological burden of the worker.

Description

An apparatus of opening and shutting a manhole cover}

The present invention relates to a manhole cover opening and closing device, and more particularly to a manhole cover opening and closing device that can be easily and quickly work even by the worker alone, to prevent occasional safety accidents.

In general, manholes are installed at regular distances for cleaning, maintenance, and repair of various cables and gas pipes buried underground, including water and sewage. These manholes are provided with steel or concrete caps. Therefore, when carrying out various construction or cleaning work, the operator must be required to open and close the manhole cover.

However, in the past, the workers had to open and close the work with a pickaxe or shovel or other tools depending on the force, it was not only very difficult, but also has a problem that the work is cumbersome and time-consuming. There was also a problem that a lot of safety accidents, such as injury to the hands or feet in the process of work, or hurt the waist while using excessive force.

Therefore, the present invention has been devised to solve the above-mentioned conventional problems, the object of which is to apply a principle of screw that can lift heavy objects with a small force to a convenient cart structure, convenient and quick Manhole cover opening and closing work can be performed, and to provide a manhole cover opening and closing device that can prevent safety accidents that occur occasionally.

Another object of the present invention is to provide a manhole cover opening and closing device that can be easily fastened by hand without an auxiliary means such as a spanner.

Another object of the present invention is to provide a manhole cover opening and closing device that can be fixed more easily and reliably when fixing the fixing bar to the manhole cover.

Another object of the present invention is to provide a manhole cover opening and closing device that can be opened and closed conveniently and quickly with less force by mounting a cylinder using hydraulic or pneumatic to the manhole cover opening and closing device.

Another object of the present invention is to provide a manhole cover opening and closing device that can be easily opened and closed work as a more stable structure.

Still another object of the present invention is to provide a manhole cover opening and closing device configured to be collapsible with a main body frame and an auxiliary frame.

Still another object of the present invention is to provide a manhole cover opening and closing device that is securely fixed with a fixing means when folded and moved as described above.

In order to achieve the above object, the present invention is provided with a handle on the upper side, a wheel is provided on the lower side, and in the main body frame provided with a plurality of support intervals therebetween, provided between the main body frame and fixed with a spiral hole in the center thereof. A support, a guide groove formed in the inner side of the main body frame, a lifting table provided to be able to move up and down along the guide groove to the lower side of the fixed support, combined with the spiral hole, the bottom is joined to the platform and the handle to the top A manhole cover lifting and lowering portion consisting of a spiral shaft provided, a long hole provided on both sides of the lifting platform, and a fixing part formed with a hook portion at the upper side and a hook portion at the bottom, and a fixing nut coupled with the screw portion Characterized in that it comprises a manhole cover fixing portion configured.

The fixing nut is characterized in that the handle portion provided to the outside.

The manhole cover fixing portion is characterized in that the turnbuckle is mounted between the fixing bar.

The manhole cover lifting portion is mounted in the lower direction in the center of the fixed support and is characterized in that the cylinder is operated by a switch provided with the handle, and one side is fixed to the lifting rod cylinder rod.

In addition, the guide groove is formed in the front of the main body frame, the auxiliary frame provided with wheels to the lower side is provided on both sides, the manhole cover lifting portion and the manhole cover fixing portion is provided between the auxiliary frame, the auxiliary frame Between the main body frame, one side is connected to the upper and lower sides of the auxiliary frame, the other side is characterized in that it is provided with a pair of horizontal frames on both sides.

Each connecting portion of the horizontal frame connecting the auxiliary frame and the main body frame is configured such that the auxiliary frame and the main body frame can be mutually foldable, and the main body frame vertically supports the lower side of the horizontal frame. Characterized in that the supporting jaw is provided.

It characterized in that a plurality of fixing rings are provided between the upper support of the body frame.

1 is a perspective view showing an embodiment of the present invention.

Figure 2a, b is a main part showing an operating state of the present invention.

Figure 3 is a perspective view showing another embodiment of the present invention.

Figure 4 is a perspective view showing another embodiment of the present invention.

Figure 5 is a side view showing the operating state according to FIG.

※ Explanation of code for main part of drawing

10: main frame

11: handle 12: wheels

13: support interval 14: support jaw

15: fixed ring

20: manhole cover lifting section

21: Information Home 22: Platform

23: fixed support 23a: helix

24: spiral shaft 24a: handle

30: manhole cover fixing part

31: long hole 32: fixed bar

32a: screw portion 32b: hook portion

33: fixing nut 33a: handle

34: turnbuckle

40: auxiliary frame

41: guide groove 42: auxiliary wheel

50: horizontal frame

60: pin

70: cylinder

71: cylinder rod 72: switch

80: manhole cover

81: opening and closing handle 82: hole

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention in detail as follows.

1 is a perspective view showing an embodiment of the present invention, when explaining the configuration, first, the main body frame 10 is provided with a handle 11 at the upper side, the wheel 12 is provided at the lower side, between the support between (13) is provided. This is the same as a cart commonly used to move things, which is applied in the present invention.

In addition, the fixing support 23 is provided between the main body frame 10, the guide groove 21 is formed in the inner side of the main body frame 10, the guide groove (below) of the fixing support 23 21 is provided with a lifting platform 22 to enable the lifting and lowering along, the spiral shaft 24 is formed through the center of the fixed support 23 and the spiral is formed on the outer circumferential surface of the manhole cover lifting unit 20 Configure. In this case, a handle 24a is provided at an upper end of the spiral shaft 24 to easily rotate the spiral shaft 24, and a lower end thereof is joined to an upper surface of the lifting platform 22 to allow the spiral shaft 24 to be rotated. As 24) rises, the platform 22 also rises together.

In addition, a long hole 31 having a long width is formed in the platform 22 on the left and right sides of the spiral shaft 24. A threaded portion 32a is provided at the upper end of the long hole 31, and at the lower end thereof. A fixing bar 32 having a hook portion 32b is inserted therein, and a turnbuckle 34 is mounted between the fixing bars 32, and a fixing nut 33 is attached to the screw portion 32a of the fixing bar 32. ) Is coupled to form a manhole cover fixing portion 30.

At this time, the turnbuckle 34 is a component having a screw rod to the left and right, one male screw is a right screw, the other male screw is a left screw. Rotating the central component, that is, the nuts, causes the two male threads to approach each other, while rotating the nut away. Therefore, when pulling an object tightly or fixing it tightly, the object can be achieved by turning the turnbuckle in the middle and turning it. In addition, the fixing nut 33 is positioned on the upper surface of the platform 22 to fix the fixing bar 32. The operation of the manhole cover lifting portion 20 and the manhole cover fixing portion 30 will be described in detail with reference to FIGS.

In addition, there are various types of shape of the hook portion 32b of the fixing bar 32, which is shown in this embodiment is mainly a T-shape used when opening and closing the manhole cover for electricity, communication and city gas, As shown, there is a disk type used when opening and closing the sewer manhole cover, and an L shape used when opening and closing the manhole cover for water supply.

Figure 2a, b is a main part showing the operating state of the present invention, it describes the process of opening and closing the manhole cover by the present invention.

Commonly used manhole cover is provided with an opening and closing handle to the upper surface, a plurality of holes are formed in the sewer manhole cover. Accordingly, Figure 2a describes the process of opening and closing the manhole cover using the opening and closing handle.

First, while lowering the fixing nut 33 little by little to lower the fixing bar 32 to the surface of the manhole cover 80, the hook portion 32b is inserted into the opening and closing handle 81 of the manhole cover 80. When the fixing bar 32 is pushed to both sides by rotating the turnbuckles 34 mounted between the fixing bars 32, the hook part 32b fitted by the opening and closing handle 81 is tightly fixed. Then, when the handle 24a is turned, the spiral shaft 24 coupled with the spiral hole 23a formed at the center of the fixed support 23 rises, so that the platform 22 joined to the spiral shaft 24 is also raised. The manhole cover 80 is to be lifted up. At this time, it is preferable to use a trapezoidal or square screw which is widely used for the purpose of transmitting a large load in the axial direction to the spiral shaft 24. Therefore, by lifting the manhole cover 80 to a certain height, by moving the body it is possible to easily detach the manhole cover 80 from the manhole.

2b illustrates a process of opening and closing the manhole cover using a plurality of holes formed in the manhole cover. This is to open and close the manhole cover when the opening and closing handle is not provided or damaged in the manhole cover.

First, while setting the fixing bar 32 along the long hole 31 is set to the position of the hole 82 formed in the manhole cover 80. At this time, the long hole 31 is very useful in setting the position of the fixing bar 32 when the position of the hole 82 is not constant. After the setting operation, the fixing bar 32 is inserted into the hole 82 while releasing the fixing nut 33 so that the hook part 32b is caught inside the hole 82. After that, the turnbuckle 34 is rotated to be firmly fixed, and the manhole cover 80 is opened in the manner described in FIG. 2A.

At this time, the fixing nut 33 is provided with a handle portion 33a to the outside, so that when the fixing nut 33 is rotated, the operator can easily turn his or her hand without an auxiliary means such as a spanner.

3 is a perspective view showing another embodiment of the present invention, illustrating an example using hydraulic or pneumatic pressure in the present invention. As shown, a cylinder 70 is provided downward in the center of the fixed support 23, and an end of the cylinder rod 71 protruding downward of the cylinder 70 is joined to the lifting platform 22. In addition, the handle 11 is provided with a switch 72 to manipulate the pressure inside the cylinder 70. At this time, the method for manipulating the internal pressure of the cylinder 70, in addition to the method of using the button-type switch 72 mounted with the handle 11 as described above, the foot switch is provided separately so that it can be operated by stepping on the foot ( Not shown).

Therefore, when the switch 72 is turned on, the cylinder rod 71 is drawn into the cylinder 70 due to the pressure change in the cylinder 70, and the platform 22 joined to the cylinder rod 71 is also guided. Since it rises along the groove 21, the manhole cover can be opened and closed quickly and conveniently with less force.

At this time, the configuration of the cylinder 70 using the hydraulic or pneumatic and the switch 72 for operating the same is already well known that can be manufactured by anyone skilled in the art.

4 is a perspective view showing another embodiment of the present invention, the guide groove 41 is formed in the front of the main body frame 10, the auxiliary wheel 42 is provided on the lower side The frame 40 is provided at both sides, and the manhole cover lifting portion 20 and the manhole cover fixing portion 30 shown in FIG. 1 are provided between the auxiliary frames 40.

In addition, between the auxiliary frame 40 and the body frame 10, one side is connected to the upper and lower sides of the auxiliary frame 40, the other side of the pair of horizontal frame 50 is connected to the body frame 10 ) Is provided on both sides, and is composed of a quadrangular box shape as a whole.

And the connecting portion of the horizontal frame 50 and the auxiliary frame 40 and the main body frame 10 is fixed with a pin 60, so that each node is configured to the link movement to this point. At this time, in the configuration to enable the link movement to the point, it is natural that a variety of fixing means can be used in addition to the fixing method using the pin 60 as described above.

In addition, the support section 13 provided on the upper side of the main body frame 10 is provided with a c-shaped fixing ring 15 on both left and right sides. At this time, the fixing ring 15 is configured to enable a rotational movement in a predetermined range on the upper surface of the support rod 13, which can be easily manufactured by those skilled in the art. The operation of the fixing ring 15 will be described in FIG. 5 to be described later.

When the horizontal frame 50 performs a link movement with respect to the main body frame 10, the lower side of the horizontal frame 50 is vertically supported on the main body frame 10 to prevent the horizontal frame 50 from hitting downward. The jaw 14 is provided. Therefore, the horizontal frame 50 can be rotated upward to the connection portion with the main frame 10, but the downward rotation is limited, so that it is possible to maintain a quadrangular box shape during operation .

5 is a side view showing the operating state according to Figure 4, showing the operation of folding the horizontal frame 50 with respect to the main body frame 10. This is to promote convenience by reducing the volume when moving or storing after finishing the opening and closing of the manhole cover.

After folding the horizontal frame 50 as described above, by rotating the annular fixing ring 15 shown in Figure 4 in the direction of the arrow to be caught by the side of the fixing support 23, such as to support the string or wire The fixing means can be easily fixed without the need.

At this time, in addition to the method of using the fixing ring 15 as a fixing means as described above, it is obvious that the purpose can be achieved by using other well-known fixing means.

As described above, the present invention can easily and quickly open and close the manhole cover to perform efficient work, and is configured to prevent occasional safety accidents have the effect of reducing the psychological burden of the worker.

In addition, the fixing nut is provided with a handle so that the work can be performed directly by hand without an auxiliary means such as a spanner required to adjust the nut, thereby reducing the cumbersome work.

Further, by mounting a one-touch hydraulic / pneumatic cylinder, the manual operation of the operator can be greatly reduced, thereby enabling more efficient and safe opening and closing operations.

In addition, since the main body is more stably configured as a box structure, since the operator can easily open and close the work alone, the work efficiency can be greatly improved, and the main body frame and the auxiliary frame of the main body can be mutually folded. It has the effect of being easy to move and store.

And when folded and moved and stored as described above, by having a fixing ring to be securely secured, there is no need for auxiliary fixing means such as strings or wires, and the safety accidents that may occur to workers by incomplete fixing after folding Has the effect of preventing.

Claims (7)

In the main body frame is provided with a handle on the upper side, a wheel is provided on the lower side, and a plurality of support intervals therebetween, The fixing support 23 provided between the main body frame 10 and the spiral hole 23a is formed in the center, the guide groove 21 formed in the inner side of the main body frame 10, and the fixing support 23 The lifting platform 22 provided to enable the lowering and lowering along the guide groove 21 to the lower side is coupled with the spiral hole 23a, and the lower end is joined to the lifting platform 22, and the handle 24a is upwardly connected. A manhole cover elevating unit 20 having a spiral shaft 24 provided thereon; Longitudinal holes 31 provided on both sides of the platform 22, the fixed bar 32 is inserted into the long hole 31 and provided with a screw portion (32a) and a hook portion (32b) formed at the lower end, and Manhole cover opening and closing device characterized in that it comprises a manhole cover fixing portion 30 consisting of a fixing nut 33 coupled to the screw portion (32a). The manhole cover opening and closing device according to claim 1, wherein the fixing nut (33) is provided with a handle part (33a) outward. The manhole cover opening and closing device of claim 1, wherein the manhole cover fixing part (30) is equipped with a turnbuckle (34) between the fixing bars (32). According to claim 1, The manhole cover lifting portion 20 is mounted downward in the center of the fixed support 23 and the cylinder 70 is operated by a switch 72 provided with the handle 11 and Manhole cover opening and closing device, characterized in that the one side is composed of a cylinder rod 71 is fixed to the lifting platform (22). According to claim 1, wherein the guide groove 41 is formed in the front of the main body frame 10, the auxiliary frame 40 provided with the auxiliary wheel 42 to the lower side is provided on both sides, the auxiliary frame The manhole cover lifting portion 20 and the manhole cover fixing portion 30 is provided between the (40); Between the auxiliary frame 40 and the body frame 10, one side is connected to the upper and lower sides of the auxiliary frame 40, the other side of the pair of horizontal frame 50 is connected to the body frame 10 Manhole cover opening and closing device characterized in that provided on both sides. According to claim 5, wherein each of the connecting portion of the horizontal frame 50 connecting the auxiliary frame 40 and the main body frame 10 to the point that the auxiliary frame 40 and the main body frame 10 is Is configured to be collapsible with each other; The main body frame 10 is a manhole cover opening and closing device, characterized in that the supporting jaw (14) is provided to vertically support the lower side of the horizontal frame (50). The manhole cover opening and closing device according to claim 6, wherein a plurality of fixing rings (15) are provided in the upper support section (13) of the main body frame (10).