KR20130107901A

KR20130107901A - Manhole cover lifter

Info

Publication number: KR20130107901A
Application number: KR1020120030075A
Authority: KR
Inventors: 정원국; 이종필; 정광현
Original assignee: 주식회사 케이티
Priority date: 2012-03-23
Filing date: 2012-03-23
Publication date: 2013-10-02

Abstract

Manhole cover switchgear for opening and closing the manhole cover is a switch body, a nib formed so that the inner diameter becomes narrower toward one end of the switchgear body, a fixing pin contacting the ground from the other end of the switchgear body to the pivot shaft, and opening and closing inserted into the keyhole of the manhole cover It characterized in that it comprises a multi-stage traction wire for connecting the pin, the opening and closing pins and the switch body to have a first length and a second length, and a fixing ring which is open at an upper portion so that the multi-stage traction wire is located in the switch body.

Description

Manhole Cover Switch {MANHOLE COVER LIFTER}

The present invention relates to a manhole cover switch.

In general, a manhole is a hole that allows people to enter and exit the road surface. The place where it is installed is located in the place where the thickness or direction of the pipe changes, the starting point, the intersection point, or the middle of the long straight part. It is also widely used for communication of ventilation and conduits.

At the current work site of telecommunication facilities, the manhole cover made of iron with a weight of 130 ~ 180KG is opened for manhole work, and it is made for two people to open by using a pickaxe or bending a rebar to open or close the manhole cover. Manhole covers are opened and closed using rings. When opening and closing a heavy weight manhole cover using a manhole cover switch, the workers directly feel the burden, and in severe cases can cause occupational diseases such as back pain.

In this regard, Korean Laid-Open Patent Application (Application No. 1999-0006624) relates to a multi-stage hook-type manhole cover switch, and discloses a device capable of moving or opening / closing a terminal portion having a constant angle change by inserting it into a groove of a manhole cover. It is.

However, such a manhole cover switch is formed so as to lift the manhole cover by using the principle of the lever, by placing the foot on the wing to grasp the center of gravity. However, when closing the manhole cover, unlike the opening of the manhole cover, the distance between the support and the manhole cover changes, the distance between the hook holding the manhole cover and the support for supporting the switchgear is fixed, so when the manhole cover is closed Should be closed by hand. In addition, in the case of a dry manhole cover, a separate device must be provided to release the locking device, and even when using the equipment, foreign matter or ice may be caught in the manhole cover, so that it may act as a limitation in using the device.

Some embodiments of the present invention, by opening and closing the manhole cover to be able to change the distance between the manhole cover and the main body of the switch fluid, so that when opening and closing the manhole cover, the manhole cover open and close without using The purpose is to provide a manhole cover switch that can be.

In addition, some embodiments of the present invention, without having to prepare a separate vox wrench to release the locking device, it is possible to fasten the bolt having at least one angle to the switch body itself so as to open various types of keyhole manhole cover. An object of the present invention is to provide a manhole cover switch having a box wrench adapter.

In addition, some embodiments of the present invention have a pedal configured to load the weight of the worker in the direction of gravity, so that the manhole cover is opened or closed only by loading the weight of the worker on the pedal without using the waist of the worker. The purpose is to provide a manhole cover switch that can be.

In addition, some embodiments of the present invention, the manhole cover having a weight of about 80KG to 150KG can be opened and closed using the manhole cover opener, manhole cover opener that can eliminate the occupational causes such as back injury and safety accidents The purpose is to provide.

As a technical means for achieving the above technical problem, the manhole cover switch according to an embodiment of the present invention, the nib formed to narrow the inner diameter toward the switch body, one end of the switch body, the other end of the switch body to the rotating shaft A fixing pin in contact with the ground, an opening pin inserted into the key hole of the manhole cover, a multistage traction wire connecting the opening pin and the actuator body to have a first length and a second length, and a multistage traction wire to be positioned on the actuator body The upper part is characterized in that it comprises an open fixing ring.

In addition, in another embodiment of the present invention, the multi-stage traction wire connects the first connecting ring connected to the fixing ring when opening the manhole cover and the second connecting ring, the first connecting ring and the second connecting ring on the other side thereof. A first end comprising a first towing wire; And a third connecting ring connected to the fixing ring when the manhole cover is closed, and a fourth connecting ring connected to the hole of the opening and closing pin on the other side thereof, and a second traction wire connecting the third connecting ring and the fourth connecting ring. It includes a second end, the second connecting ring and the third connecting ring may be formed to be coupled.

In addition, in another embodiment of the present invention, each connecting ring is formed in an elliptical shape, the length of the long axis of the elliptical may be 40mm to 80mm.

In addition, in another embodiment of the present invention, the length of the first traction wire and the second traction wire may be 200mm to 600mm.

According to any one of the problem solving means of the present invention described above, when opening and closing the manhole cover, the distance between the manhole cover and the switch body can be changed in fluid, so that when the manhole cover is opened and closed, It is possible to provide a manhole cover switch that can be used without the manhole cover switch.

In addition, according to any one of the problem solving means of the present invention, without having to prepare a separate vox wrench to release the locking device, having at least one angle to the switch body itself to open various types of key manhole cover A manhole cover switch provided with a box wrench adapter capable of fastening a bolt can be provided.

In addition, according to any one of the problem solving means of the present invention, by providing a pedal to load the weight of the worker in the direction of gravity, the manhole cover just by loading the weight of the worker on the pedal without using the waist of the worker It is possible to provide a manhole cover switch that can open or close the.

In addition, according to any one of the problem solving means of the present invention, since the manhole cover having a weight of about 80KG to 150KG can be opened and closed using the manhole cover opener, it is possible to eliminate the causes of occupational diseases such as back injury and safety accidents Can provide a manhole cover switch.

1 is a side view of the manhole cover switch according to an embodiment of the present invention.
Figure 2 is a schematic diagram showing each component of the manhole cover switch of Figure 1;
3 is a view showing an embodiment of opening and closing the manhole cover using the manhole cover switch of FIG.
Figure 4 is a view showing an embodiment for unlocking the lock manhole cover using the manhole cover switch of Figure 1;
FIG. 5 is a view illustrating an embodiment of releasing a lockable manhole cover using the manhole cover switch of FIG. 1.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as "comprising ", it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a side view of the manhole cover switch according to an embodiment of the present invention, Figure 2 is a schematic diagram showing each component of the manhole cover switch of Figure 1; Referring to FIG. 1, the manhole cover switch 100 includes a switch body 10, a nib 20, a fixing pin 30, an opening and closing pin 40, a multi-stage traction wire 50, a fixing ring 60, and a pedal. 70, a box wrench adapter 80. Since the components disclosed in FIG. 1 are merely illustrated for convenience of description, the configuration of the manhole cover opener 100 of the present application is not limited to those illustrated in FIG. 1.

Manhole cover switch 100 is a product that can be used when opening the communication, KEPCO, water and sewage cap, because the weight of the manhole cover is usually 80KG to 150KG weight, it can be very difficult to open by human power. Therefore, it can cause occupational diseases such as back injuries and safety accidents, and was developed with emphasis on field safety work to open the manhole cover easily and safely. In addition, it is possible to open a variety of manhole cover by adding parts to open the manhole cover attached to the recently released lock device. To this end, the body formed of steel may be made strong and light in weight, and the body may be manufactured so that deformation does not occur when an external impact or force is applied. In addition, it can be attached by electric welding, etc. so that the parts to be attached can be firmly attached. Each part must be precise and the strength can be sustained. It can be manufactured so as not to.

1 and 2A, the switch body 10 is formed in a cylindrical shape, and the length of the switch body 10 is 300 mm to 1800 mm. This length can be variously formed to a height that can be grabbed by the operator, it can be formed in a circular shape easy to hold by hand. In addition, the length can be a length that is convenient for human use in the range that can cover the range of the average key to all keys, for example, can be formed in a length that is convenient for a person of 1600mm height. The length may be 1200 mm, for example.

The main body of the switchgear 10 has to lift a manhole cover of 150 kg or less with little force when opening and closing the manhole cover, and thus serves as a lever, and can serve as a support for attaching necessary parts. In addition, the switch body 10 may be formed to form a hole (Hole) in order to reduce the weight thereof, iron, steel, that is, carbon steel, low alloy steel, high alloy steel, stainless steel, austenitic stainless steel, Ferrite stainless steel, martensite stainless steel may be formed of a group which can be made of any one or more combinations.

1 and 2B, the switch body 10 may include a pedal 70 to which a force is applied to rotate the switch body 10 around the pivot shaft of the fixing pin 30. The pedal 70 is formed to vertically cross the switch body 10 and may be formed to be inclined toward the ground. That is, when the rotational movement principle of the rigid body in the rotational movement, when the force of the F in the direction of the force is applied to the pedal 70 side of the weight (m) of the operator receives the gravity (w), Around the fixing pin 30 on the ground, the switch body 10 generates a rotational force τ by the length r of the switch body 10 in the opposite direction of the manhole cover. By using the rotational force (τ = Fxr), the multi-stage traction wire 50 caught in the fixing ring 60 is to pull the manhole cover.

In addition, the pedal 70 may include a pedal part 71, which is a place where the weight is carried, and a support part 73 supporting the pedal part 71 on the switch body 10. Each standard, for example, the horizontal length of the pedal unit 71 may be 50mm, the vertical length is 2mm, the horizontal length of the support 73 may also be 50mm, the vertical length may be 6mm. .

The pedal unit 71 may be bonded to the switch body 10 by welding welding, or may be integrally formed in the mold fabrication step. In addition, the material may be the same material as the switch body 10, because the force to apply the force to the switch body 10 to be fixed, it is possible to widen the contact area. In addition, a material of high strength may be used so that the pedal part 71 does not break, and surface friction force or the like may be used so that the foot does not slip.

1 and 2C, the fixing pin 30 is in contact with the ground by the rotation shaft at the other end of the switch body 10, and is formed in a “∩” shape, and the outer circumference becomes narrower toward the end in contact with the ground. Can be formed. In addition, the end of the fixing pin may be formed in a "∨" shape. The fixing pin 30 may include a first fixing part 31 and a second fixing part 33, and at least one fixing part may be formed.

The fixing pin 30 may be made of the same material as the switch body 10, and when the manhole cover is opened and closed, the switch body 10 should be fixed so as not to slip off the ground, so that both ends are pointed shapes. The end of the fixing pin 30 may be manufactured so that the strength is stronger to prevent wear.

In addition, the fixing pin 30 may be manufactured integrally with the switch body 10, or may be separately manufactured and welded to the switch body 10 by welding. Each thickness of the first fixing portion 31 and the second fixing portion 33 of the fixing pin 30 may be, for example, 5mm, the separation distance therebetween may be 40mm, the longitudinal length thereof It may be 300mm, the length and width of the end may be the same. In addition, the fixing pin 30 serves to fix the manhole cover switch 100 to the ground.

1 and 2D, the fixing ring 60 is formed so that the upper part is opened so that the multi-stage traction wire 50 is located in the switch body 10, and may be formed in a semicircular shape, and the length of the upper part. May be a length into which at least one multistage traction wire 50 may be inserted. In addition, the fixing ring 60 should be open to connect the multi-stage traction wire 50, it may be circular so as not to be damaged when in contact with the multi-stage traction wire 50. The fixing ring 60 may be manufactured in a circular shape and joined to the switch body 10, and the joining may be a welding joint that is a welding.

1 and 2E, the multi-stage traction wire 50 may connect the opening and closing pin 40 and the switch body 10 to have a first length and a second length. In addition, the multi-stage traction wire 50, when opening the manhole cover, the first connecting ring 51a connected to the fixing ring 60 and the second connecting ring 51c and the first connecting ring 51a on the other side thereof. And a first end portion 51 including a first traction wire 51b connecting the second connection ring 51c and a third connection ring 53a connected to the fixing ring 60 when the manhole cover is closed. And a second traction wire 53 connecting the fourth connecting ring 53c, the third connecting ring 53a, and the fourth connecting ring 53c, which are connected to the hole of the opening / closing pin 40 on the other side thereof. It includes a second end portion 53, the second connecting ring (51c) and the third connecting ring (53a) may be formed to be coupled to the chain.

Each connecting ring may be formed in an oval shape, the long axis length of the oval may be 40 mm to 80 mm, and the length of the first tow wire 51b and the second tow wire 53b may be 200 mm to 600 mm. The multi-stage traction wire 50 may be formed of at least one stranded iron core, and the inner diameter of the iron core may be 2 mm to 100 mm. For example, the size of the iron core may be 4mm, the long axis length of the oval may be 60mm, the length of the traction wire may be 400mm. In addition, it may be provided for adjusting the length when opening and closing the manhole cover.

1 and 2f, the opening and closing pin 40 is inserted into the keyhole of the manhole cover, the material may be steel, the part that is in direct contact with the manhole cover is subjected to the greatest force, the strength of the manhole cover Although the strongest of the components of the switchgear 100 can be manufactured, the standard should be made to meet the specifications of the manhole cover. For example, the length of the portion to be in contact with the key hole of the manhole cover may be 33mm, the transverse length may be 9mm.

1 and 2G, the box wrench adapter 80 may be coupled to the switch body 10 at a right angle so as to fasten a bolt having at least one angle to unlock the manhole cover. . In addition, the material may be made of the same or similar to the material of the steel or the actuator body 10, can be installed for use in various types of vox wrench, etc., and can open the manhole cover for the market nowadays It may be coupled to the switch body 10 so that.

For example, if a viscous wrench having the same shape as a flat head screwdriver is used, the direction in which the force is applied and the direction in which the key device rotates are at right angles. Here, if the amount of work (w = Fxs) is equal, the principle that the magnitude of the force (F) is reduced as the rotation distance (s) increases. The box wrench adapter 80 is made to coincide with the direction in which the force is applied and the direction of action, and the rotation distance s is increased so that the same work can be performed with less force (F). In addition, the box wrench adapter 80 may serve to enable various types of box wrenches.

1 and 2H, the nib 20 is formed such that the inner diameter thereof becomes narrower toward one end of the switch body 10. The other inner diameter of the nib 20 may be 17 mm to 62 mm, and the inner diameter of one side of the nib may be 5 mm to 20 mm. For example, the tip of the nib 20 may be 11 mm. The tip portion of the nib 20 may be formed flat so as to be horizontal with the plane, and may be formed in a conical shape so that the flat portion in addition to the cone portion may be 35 mm.

In addition, the nib 20 can be made to be thin in the end to be put in a narrow gap, the strength can be made so that deformation does not occur when moving the object less than about 150kg. The nib 20 may be manufactured in a mold so as to be integrally formed with the switch body 10, or may be manufactured in a separate mold and joined by welding. In addition, the nib 20 is exposed to the outside when the manhole cover is firmly fixed due to foreign matters, etc., because it is moved into the groove used as a lever, it can facilitate the opening and closing operation.

In addition, at least one or more of the actuator body 10, the nib 20, the fixing pin 30, the opening pin 40, the fixing ring 60, and the pedal 70 may be formed as a hole therein. At least one of them may be formed of a group which may be made of a combination of any one or more of iron, steel, carbon steel, low alloy steel, high alloy steel, stainless steel, austenitic stainless steel, ferritic stainless steel, and martensitic stainless steel. Can be.

3 is a view showing an embodiment of opening and closing the manhole cover using the manhole cover switch of FIG. Referring to Figure 3, (a) is an embodiment of using a short wire when opening the manhole cover, (b) shows an embodiment of using a long wire when closing the manhole cover.

Referring to (a), after hooking the second connecting ring (51c) and the third connecting ring (53a) to the fixing ring (60), the opening and closing pin 40 is inserted into the manhole cover groove to turn the direction and the manhole cover and Connecting the opening and closing pin 40, holding the upper portion of the switch body 10 with one hand to fix the fixing pin 30 on the opposite side to the ground.

Then, put the right foot or left foot on the pedal 70, while pulling the right or left hand caught on the upper body of the switch body 10 toward the body to give a force to the foot on the pedal 70 manhole cover switch 100 Do not slip on the ground.

When the manhole cover switch 100 is repeatedly moved while moving backwards little by little, the manhole cover is completely opened. Here, even if a lot of force is not applied to the upper part, since the weight of the worker (60 to 100kg) due to gravity is loaded on the pedal 70, the weight of the manhole cover (80 to 150kg) is not carried by the worker's waist. .

Referring to (b), after hooking the first connecting ring 51a to the fixing ring 60, the opening pin 40 is inserted into the manhole cover groove to rotate the direction to connect the manhole cover and the opening pin 40. Since the multi-stage traction wire 50 is using the first connecting ring 51a, the length of the multi-stage traction wire 50 is increased by at least twice as compared with (a).

In this state, the upper portion of the switch body 10 is held by one hand and the fixing pin 30 on the opposite side is fixed to the ground. Put the right foot or left foot on the pedal (70), while pulling the right or left hand caught in the upper portion of the switch body (10) toward the body to give a force to the foot stepped on the pedal (70) the manhole cover switch (100) slips off the ground Do not

In addition, if the manhole cover switch 100 is repeatedly moved while moving backwards little by little, the manhole cover is completely closed. Here, even if a lot of force is not applied to the upper part, since the weight of the worker (60 to 100kg) due to gravity is loaded on the pedal 70, the weight of the manhole cover (80 to 150kg) is not carried by the worker's waist. . In addition, the operator is not in the form of opening and closing the force to the waist, but the form of supporting the weight of the manhole cover by the support of the leg and the power of the leg, it is possible to open and close the lid as it is standing.

Although the work length of (a) and the work length of (b) are the same, the reason why the multi-stage traction wire 50 of (b) should be longer is that the manhole cover switch 100 is placed in the hole when the manhole cover is open. Because I can't support it.

Figure 4 is a view showing an embodiment for unlocking the lock manhole cover using the manhole cover switch of Figure 1; Referring to (a), the hex key device artificial and vox wrench are shown, and in (b) the hex box wrench can be attached to the box wrench adapter 80, and then (c) the hex key device artificial have. Here, since the direction of the force and the direction of solving the hexagonal lock device artificial is the same, and the distance is longer, it is possible to perform the same work to solve the hexagonal lock device artificial force with less force.

FIG. 5 is a view illustrating an embodiment of releasing a lockable manhole cover using the manhole cover switch of FIG. 1. Referring to (a), the artificial date and the box wrench are shown in Fig. 2, and after the date box wrench is mounted on the box wrench adapter 80 at (b), the date locker can be released at (c). have. As in the hexagonal device artificial body of FIG. 4, since the unwinding direction is the same and the distance is increased, the same work of unwinding the dated device artificial body can be performed with little force.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

100: manhole cover switch
10: switch body 20: nib
30: fixing pin 31: first fixing part
33: second fixing portion 40: opening and closing pin
50: multi-stage traction wire 51: first stage
51a: first linkage 51b: first towing wire
51c: second link 53: second stage
53a: third linkage 53b: second towing wire
53c: fourth linkage 60: retaining ring
70: pedal 71: pedal unit
73: support 80: box wrench adapter

Claims

In the switchgear which opens and closes a manhole cover,
Switchgear body;
A nib formed such that an inner diameter thereof becomes narrower toward one end of the switch body;
A fixing pin contacting the ground with a rotation shaft at the other end of the switch body;
An opening and closing pin inserted into the key hole of the manhole cover;
A multi-stage traction wire connecting the opening and closing pin and the switch body to have a first length and a second length; And
Fixed ring with a portion of the upper side opened so that the multi-stage towing wire is located in the switch body
Manhole cover switch comprising a.

The method of claim 1,
The multi-stage traction wire
A first end portion including a first connecting ring connected to the fixing ring and a second connecting ring on the other side thereof, and a first traction wire connecting the first connecting ring and the second connecting ring when the manhole cover is opened; And
A third connecting ring connected to the fixing ring and a fourth connecting ring connected to the hole of the opening / closing pin on the other side thereof when the manhole cover is closed, and a second traction wire connecting the third connecting ring and the fourth connecting ring; Second stage including
Lt; / RTI >
The second connecting ring and the third connecting ring is formed to be coupled to the chain, manhole cover switch.

3. The method of claim 2,
Each connecting ring is formed in an oval shape, the length of the long axis of the oval is 40mm to 80mm, the manhole cover switch.

3. The method of claim 2,
The length of the first traction wire and the second traction wire is 200mm to 600mm, the manhole cover switch.

The method of claim 1,
The multi-stage traction wire is a manhole cover switch is formed of at least one twisted wire core.

The method of claim 5, wherein
The inner diameter of the iron core is 2mm to 100mm, the manhole cover switch.

The method of claim 1,
The switch body is formed in a cylindrical shape, the length of the switch body is 300mm to 1800mm, manhole cover switch.

The method of claim 1,
The other side inner diameter of the nib is 17mm to 62mm, one side inner diameter of the nib is 5mm to 20mm, the manhole cover switch.

The method of claim 1,
The fixing pin is formed of a "∩" type, the manhole cover switch is formed so that the outer peripheral edge is narrowed toward the end in contact with the ground.

The method of claim 9,
End of the fixing pin is formed in a "∨" type, manhole cover switch.

The method of claim 1,
A pedal is applied with a force such that the switch body rotates around the pivot shaft of the fixing pin.
That further comprises a manhole cover switch.

The method of claim 11,
The pedal is formed to cross perpendicular to the switch body, the manhole cover switch is formed inclined toward the ground.

The method of claim 1,
The fixing ring is formed in a semi-circular shape, the length of the upper portion is a length that can be inserted at least one of the multi-stage traction wire, the manhole cover switch.

The method of claim 1,
A box wrench adapter coupled to the switch body at a right angle so as to fasten a bolt having at least one angle to unlock the manhole cover.
To further include, manhole cover switch.

The method of claim 1,
At least one or more of the actuator body, nib, fixing pin, opening and closing pin, fixing ring, pedal is that the inside is formed of a hole (Hole), manhole cover switch.

The method of claim 1,
At least one or more of the actuator body, nib, fixing pin, opening pin, fixing ring, pedal is a combination of any one or more of carbon steel, low alloy steel, high alloy steel, stainless steel, austenitic stainless steel, ferritic stainless steel, martensitic stainless steel It is formed of a group that can be made, manhole cover switch.