KR101532619B1 - Cable tray installation hole punching machine - Google Patents

Abstract

The present invention relates to a portable hole punching machine for a cable tray and, more specifically, relates to a portable hole punching machine for a cable tray to form a connection hole on a cable tray. The portable hole punching machine for a cable tray comprises: a housing provided with a space of a fixated size formed therein, and an opening part formed on one side thereof into which the cable tray is inserted up to a fixated depth; a lever which has a fixated length, is installed inside the housing, and rotates vertically about a rotary shaft disposed on a front end thereof; a punch installed in a lower surface of the lever in close proximity of the rotary shaft to form a connection hole on the cable tray inserted into the opening part; a lower mold installed below the opening part to correspond to the punch; a pressing bar installed to make a permanent contact with a rear end and an upper surface of the lever, and installed in the housing to move vertically; and a drive means connected to a pressing bar to move the pressing bar vertically. When installing the cable tray or the like, a connection hole can directly be formed on the cable tray on a work site.

Description

CABLE TRAY INSTALLATION HOLE PUNCHING MACHINE

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a portable type air bag for a cable tray, and more particularly, to a portable type air bag for a cable tray that can directly form a connection hole in a cable tray at the time of installing a cable tray.

In the factories and buildings, multiple lines of power, control communications and instrumentation cables are wired. Cable trays are installed on the ceiling or wall of the building to support and protect these power, control communications, and instrumentation cables.

The cable tray is made of a metal plate and is provided with a vertical plate bent upward at both sides. These cable trays are already produced in standardized sizes. When the cable tray produced in such a standardized size is installed at the work site, it is necessary to cut or connect the cable tray according to the situation of the site.

When connecting the cable tray in this way, a connecting hole must be formed for fastening between the cable trays. At present, the drilling work of the cable tray is generally carried out using a portable electric drill (not shown). However, it takes a long time to form the connection hole in the cable tray by using such a portable electric drill.

In addition, in the case of forming a connection hole using an electric drill and then fastening it with a bolt, the positions of the holes formed in the cable tray to be connected should be the same. Even if the skilled worker does not align the holes with each other There is a problem that the cable tray can not be connected firmly.

For this reason, there is a demand for portable air for cable trays necessary for installing cable trays. Korean Utility Model Registration Utility Model No. 20-0457093 discloses an example of the air for a cable tray according to the prior art.

The conventional airbag according to the prior art comprises a lower block 100 provided at the lowermost part; A side block 200 provided on both sides of the lower block 100; A support block 300 mounted on the side block 200 and supporting the perforated block when the cable tray is formed with an opening, the cable tray being inserted; A connecting piece 400 for fastening the lower block 100 and the supporting block 300; A perforation block (500) forming an opening in the cable tray; And an upper block 600 fastened to the upper portion of the side block 200 and coupled to the perforated block. A piston operated by a hydraulic pump is installed on the upper surface of the upper block 600.

As described above, since the piston of the portable type air in accordance with the related art is directly connected to the upper surface of the upper block 600, the load applied to the piston is large, so that the capacity of the cylinder becomes large. Further, if a cylinder having a large capacity is used, the entirety of the other air is large, which makes it difficult to carry.

Korean Registered Utility Model No. 20-0457093

SUMMARY OF THE INVENTION It is a primary object of the present invention to provide a portable type air supply for a cable tray, which is required for installing a cable tray.

In addition, the present invention relates to a cable tray for supporting and protecting a cable for power, control communication, and instrumentation when wiring, cutting a cable tray, forming a connection hole directly in the field, So that the efficiency of the operation can be increased.

In addition, the present invention provides portable air for a cable tray that can be operated by manual or power using a leverage effect of a lever so that a large force can be obtained by using a small force, .

It is another object of the present invention to provide a portable type air bag for a cable tray which can always maintain a vertical position regardless of the movement of the punch and the lever that pivots vertically.

As a means for achieving the object of the present invention, the portable type air for cable tray according to the present invention,

Portable air for cable trays forming a connection hole in a cable tray,

A housing having a predetermined size formed therein and having an opening through which the cable tray is inserted at a predetermined length;

A lever provided inside the housing and provided to be vertically pivotable about a rotation axis provided at a tip end;

A punch disposed on a lower surface of the lever so as to be close to the rotation axis and forming a connection hole in a cable tray inserted in the opening;

A lower mold provided below the opening to correspond to the punch;

A pressing bar installed to be in constant contact with an upper surface of a rear end of the lever and movable up and down in the housing;

And driving means connected to the pressure bar to move the pressure bar up and down.

In the present invention, the punch is installed so as to rotate forward and backward and to move back and forth by a predetermined distance.

A spherical pressing ball is provided at the lower end of the pressure rod so that the lever can be pressed regardless of the rotation of the lever.

The upper surface of the lever is provided with a bracket at least partially surrounding the upper surface of the pressure bar so that the lever can be rotated upward when the pressure bar is lifted.

A bearing for allowing the pressing rod to rotate in a horizontal direction and a hinge shaft for rotating the pressing rod forward and backward are provided at a lower end of the pressing rod so that the lever can be pressed regardless of the rotation of the lever.

A lower connecting plate having a through hole formed in an upper surface of the lever, a hinge shaft being fixed to the through hole of the upper connecting plate and the lower connecting plate through the through hole, The upper part of the bearing is integrally formed with the lower end of the pressing rod, and the upper connecting plate is provided with a bracket surrounding the upper surface of the fixing part so that the lever can be rotated upward when the pressing rod is lifted.

The punch is formed in a cylindrical or square pillar shape, and a connecting portion extending to a predetermined length is formed integrally at an upper end of the punch. The connecting portion is formed with a through hole through which a fastening bolt penetrates, A through hole is formed in both side walls of the through hole so as to penetrate through the through hole and to be rotatable by the fastening bolt.

The lever is provided with one or more punches.

A plurality of punches are installed at a lower end of the connecting portion, and the plurality of punches are installed to be rotatable back and forth through a fixing pin.

The pressing ball formed at the lower end of the pressing rod has a spherical shape, an elliptical shape, or an arcuate shape, and a curved surface corresponding to the curved surface of the pressing ball is formed on the inner surface of the bracket provided on the upper surface of the lever.

And an arc-shaped pressure plate for pressing the upper surface of the punch is integrally formed on a lower surface of the lever.

A punch guide for enclosing the punch is provided on a lower surface of the lever.

A seating groove having a curvature corresponding to the curvature of the pressing ball is formed on the upper surface of the rear end of the lever.

At least two punches are provided on the lever so that a plurality of connection holes can be formed in the cable tray.

The driving means includes a hub, a handle formed of a rim and a spoke, a spiral groove is formed on an outer circumferential surface of the pressing rod, and a thread is formed on an inner circumferential surface of the nut fixed to the upper plate of the housing.

The driving means includes a cylinder having a first inlet and a second inlet, and a rod vertically movably installed in the cylinder, and the rod is coupled to an upper end of the pressure rod.

The driving means includes a driving motor, a rack fixed to one surface of the pressing rod, and a pinion provided on a driving shaft of the driving motor.

According to the portable traction air for cable trays of the present invention, when the completed cable trays are installed at the construction site, the cable trays that have been manufactured are cut according to the operation site and the connection holes are formed in the connection portions, So that the work efficiency can be increased.

In addition, according to the present invention, since a large actuation force can be obtained by using a small force by using a lever having a certain length, the size of the other air can be reduced to a portable size, and the attraction force, And can be operated by using various kinds of power.

In addition, the present invention has an effect that the punch and the pressure bar are always kept vertical regardless of the movement of the lever turning up and down, thereby forming a connection hole in the cable tray.

FIG. 1 is a perspective view showing a portable type air for a cable tray according to the present invention,
FIG. 2 and FIG. 3 are side views showing a portable type air for a cable tray according to the present invention,
FIG. 4 is a plan view showing a portable type air for a cable tray according to the present invention,
FIG. 5 is an exploded perspective view showing a coupling structure of a lever and a punch of a portable air bag for a cable tray according to the present invention,
6 is a partial perspective view showing another embodiment of a portable riding air for a cable tray according to the present invention,
Fig. 7 is a side view showing another embodiment of a portable riding air for a cable tray according to the present invention, Fig.
FIG. 8 is a partial side view showing an example of driving means for a portable type air for a cable tray according to the present invention,
FIG. 9 is a partial side view showing another embodiment of a driving means for a portable type air for a cable tray according to the present invention,
FIG. 10 is a side view showing another embodiment of a driving means for a portable type air for a cable tray according to the present invention,
11 is a side view showing another embodiment of the driving means for the portable air for the cable tray according to the present invention.

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention in order to clarify the present invention. The term can be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a portable type air bag for a cable tray according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an example of a portable air intake for a cable tray according to the present invention.

As shown in the drawing, a portable air intake 1 for a cable tray according to the present invention is for forming at least one connection hole 3 in a cable tray 2, and includes a housing 10 having a portable size, And driving means 70 provided on the upper portion of the housing 10.

First, an opening 11 is formed in the front surface of the housing 10 so that the cable tray 2 can be inserted into a predetermined length. A punch 30 for forming a connection hole 3 is formed in the upper portion of the opening 11 and a lower mold 40 is provided in a lower portion thereof to correspond to the punch 30.

Therefore, when the drive means 70 is operated after inserting the cable tray 2 into the opening 11 for a predetermined length, the punch 30 is lowered and the cable tray 2 is connected to the connection hole 3 ).

2 and 3 are side views showing the internal structure of the portable tar air 1 for a cable tray according to the present invention.

As shown in the figure, a lever 20 having a predetermined length is rotatably installed inside the housing 10. Preferably, the lever 20 is a metal rod of a predetermined length, and its tip end is rotatably fixed to a rotary shaft 21 fixed to the housing 10. The rear end is freely rotatable up and down as a free end.

A punch 30 is provided at the tip end of the lever 20 at a position near the rotary shaft 21. The punch 30 is for forming a connection hole 3 in the cable tray 2, and is formed in a cylindrical or square pillar shape. In the drawing, two punches 30 are formed so as to be separated from each other by a predetermined distance in the front, rear, left and right.

A pressing rod 50 is vertically installed at the rear end of the lever 20 so as to be in contact with the upper surface of the lever 20. [ The pressing rod 50 is fixed to the housing 10 so as to be movable up and down. A drive means (70) is coupled to the upper end of the pressure bar (50). When the pressing rod 50 is moved up and down by the action of the driving means 70, the rear end of the lever 20 is pressed or pulled upward so that the lever 20 is vertically rotated. At this time, the driving means 70 can be operated by using power such as gravity, hydraulic pressure or electricity.

When the cable tray 2 is inserted into the opening 11 of the housing 10 and then the driving means 70 is operated, the pressing rod 50 vertically moves downward, 50 are moved downward, the lever 20 pivots about the rotary shaft 21 downward. When the lever 20 is rotated downward, the punch 30 disposed close to the rotation shaft 21 is lowered to form a connection hole 3 in the cable tray 2.

When the pressing rod 50 is moved vertically and the pressing rod 50 is moved upward, when the driving means 70 is operated in the opposite direction, the lever 20 is rotated by the rotation shaft 21 As shown in Fig. When the lever 20 is pivoted upward, the punch 30 is separated from the lower mold 40. At this time, the scrap separated from the connection hole 3 of the cable tray 2 is separated from the housing 10, As shown in FIG.

As described above, according to the present invention, the portable tar air 1 for a cable tray is provided with a lever 20 having a constant length so as to be vertically rotatable around the rotating shaft 21, And a pressing rod 50 is provided to contact the rear end of the lever 20 remote from the rotary shaft 21 so that a large force can be obtained by using a small force.

1 and 2, the housing 10 forms an outer periphery of the other air and includes a bottom plate 12a and vertically installed at both ends of the bottom plate 12a, Two vertical plates 12b and 12c forming a predetermined space in the vertical plates 12b and 12c and an upper plate 12d provided on the upper surfaces of the vertical plates 12b and 12c.

A rotating shaft 21 is horizontally installed between the two vertical walls 12b and 12c. Further, a lever 20 is vertically rotatably installed in an inner space between the two vertical plates 12b and 12c.

The lever 20 is a metal rod having a rectangular cross section and has a length of approximately 0.5 to 1.5 m. In addition, the thickness of the lever 20 can withstand a sufficient load according to the number of the connection holes 3. Further, the lever 20 can be bent at a predetermined curvature so as to naturally rotate in the vertical direction.

The punch 30 is mounted on the lower surface of the lever 20 so as to rotate back and forth, For this, as shown in FIG. 5, a connecting portion 35 extending upward by a predetermined length is integrally formed at an upper end of the punch 30. The lever 20 is formed with an opening hole 25 through which the connection portion 35 passes. In the drawing, two opening holes 25 are formed so as to correspond to the two punches 30, but the present invention is not limited thereto.

A through hole 26 through which the fastening bolt 27 passes is formed in the opening hole 25 and a long hole 36 having a predetermined length is formed in the connecting portion 35. Therefore, when the connecting portion 35 is fixed using the fastening bolt 27 passing through the through hole 26 and the long hole 36, the punch 30 rotates about the fastening bolt 27 back and forth And can move back and forth along the long hole 36 by a predetermined length.

Thus, when the lever 20 is rotated up and down by rotating the punch 30 forward and backward as well as moving back and forth, the punch 30 can be kept always vertical regardless of the rotation of the lever 20 do.

The lever 20 is further provided with a punch guide 31 for covering one or more punches 30 on the lower surface thereof. The punch guide 31 guides the punch 30 to keep its vertical position. The punch guide 31 may be formed of a rectangular tube or a cylinder.

5, a pressing plate 28 for pressing the upper surface of the punch 30 is integrally formed on the lower surface of the lever 20. As shown in FIG. The pressing plate 28 is formed in an arc shape so as to stably press the upper surface of the punch 30 when the lever 20 rotates up and down. At this time, the pressure plate 28 is installed corresponding to the number of the punches 30. Since the force of the lever 20 is transmitted to the punch 30 through the pressing plate 28 as described above, overload is applied to the fastening bolt 27 connecting the lever 20 and the punch 30 .

A lower mold 40 is installed at a lower portion of the punch 30. [ The lower mold 40 is formed with a cylindrical or square through hole so that the punch 30 can pass through.

A pressing rod 50 is vertically installed at a rear end of the lever 20. A spherical pressing ball 51 is integrally provided at the lower end of the pressing rod 50. The pressing ball 51 has a circular or elliptical shape so as to be in point contact with the upper surface of the lever 20.

Accordingly, the pressing rod 50 can rotate in the horizontal direction in a state of being in point contact with the upper surface of the lever 20 through the pressing ball 51. Also, the lever 20 can be pressed when the pressing rod 20 moves up and down according to the driving means 70. Particularly, the pressing ball 51 always maintains point contact with the upper surface of the lever 20 regardless of the rotation of the lever 20. [

On the upper surface of the lever 20, a bracket 53 that covers the upper surface of the pressing ball 51 is installed. The bracket 53 has a substantially "A" shape and a curved surface 53a corresponding to the curved surface of the pressing ball 51 is formed on the inner surface. Therefore, the pressing ball 51 can smoothly rotate in the horizontal direction. The bracket 53 is always in contact with the upper surface of the pressing ball 51 and rotates the lever 20 upward when the pressing rod 50 vertically moves upward.

As described above, the portable tar air 1 for use in the cable tray of the present invention is provided so that the lever 21 can be pivoted up and down about the rotating shaft 21, 50) is installed, so that a large force can be obtained by using a small force.

In addition, the punch 30 installed close to the rotating shaft 21 can be rotated forward and backward, and can be moved forward and backward by a predetermined distance, so that the punch 30 can be always kept vertical regardless of the rotation of the lever 20, 2 to be able to form the connection hole 3.

A pressing ball 51, which is in point contact with the upper surface of the lever 20, is integrally provided at a lower end of the pressing rod 50. A seating block 55 having a seating groove 54 for seating the pressing ball 51 is installed on a rear upper surface of the lever 20. A bracket 53 is formed on the upper surface of the lever 20 to cover the upper surface of the pressing ball 51.

2 and 3, when the cable tray 2 is inserted into the opening 11 of the housing 10 and then the driving means 70 is operated, the pressing rod 50 is moved downward And the pressing ball 51 installed at the lower end of the pressing rod 50 presses the lever 20 when the pressing rod 50 moves downward. When the lever 20 is pivoted downward, the punch 30 disposed close to the rotation shaft 21 is lowered downward, so that the cable 20 (3) for connection is formed on the base (2).

When the driving means 70 is operated in the opposite direction, the pressing rod 50 vertically moves upward, and when the pressing rod 50 moves upward, the pressing rod 50 is always in contact with the pressing ball 51 So that the bracket 53, which rotates the lever 20 upward. When the lever 20 is pivoted upward, the punch 30 is separated from the lower mold 40. At this time, the scrap separated from the connection hole 3 of the cable tray 2 is removed from the housing 10 And falls into the inside.

Next, Fig. 6 shows another embodiment of the airbag 1 for a cable tray according to the present invention.

As shown in the drawing, the portable air bag 1 for a cable tray according to the present embodiment includes three levers 20a, 20b and 20c. The three levers 20a, 20b and 20c are provided with one or two through holes 25, respectively. Each of the through holes 25 is provided with a punch 30. The lever 20 is integrally provided with a pressure plate 28 for pressing each of the punches 30. At this time, the punch 30 is arranged corresponding to the connection hole 3 formed in the cable tray 2. [

The three levers 20a, 20b and 20c are vertically rotatably fixed via a single rotary shaft 21 and the rear ends of the three levers 20a, 20b and 20c are welded Way, so that it can move freely up and down. And a single presser bar 50 is disposed in contact with the rear ends of the three levers 20a, 20b, and 20c.

Therefore, when the three levers 20a, 20b and 20c are rotated up and down, a plurality of punches 30 provided on the levers 20a, 20b and 20c are connected to the cable tray 2, So that the hole 3 for use can be formed.

Fig. 7 shows another embodiment of the portable air intake 1 for a cable tray according to the present invention.

As shown in the drawing, the portable air intake 1 of the present embodiment is provided with a plurality of punches 30a, 30b and 30c in one connecting portion 35. [ The connecting portion 35 is connected to the lever 20 through the through-hole 25. Three punches 30a, 30b and 30c are provided at the lower end of the connecting portion 35. [ At this time, a fixing pin is installed on the upper end of the punches 30a, 30b, 30c so as to be able to rotate back and forth. In addition, one punch guide 31 may be provided outside the three punches 30a, 30b and 30c.

 When the lever 20 is pivoted up and down, the cable tray 2 is connected to the three connecting holes 3 (3) through the three punches 30a, 30b and 30c provided at the lower end of the connecting portion 35, ) Can be formed. In the drawing, three punches are provided in one connecting portion 35, but the present invention is not limited thereto.

As described above, the portable tar air 1 for a cable tray according to the present invention is provided with a plurality of punches 30 on one lever 20 or one or a plurality of punches 30 on a plurality of levers 20 A plurality of connection holes 3 can be formed at a time.

Various types of driving means 70 may be installed in the pressing rod 50. [ For example, Figs. 8 to 11 show examples of various types of driving means 70 that can be installed in the pressure bar 50. Fig.

8 and 9, a wheel-shaped handle 61 is provided at the upper end of the pressure bar 50. [ The handle 61 is a hand-turning device that includes a hub 61a, a rim 61b and a spoke 61c. A handle 61f may be installed vertically on the spokes 61c.

The upper end of the pressure bar 50 is fixed to the hub 61a. A helical groove 61d is formed on the outer circumferential surface of the pressing rod 50 and a thread 61e corresponding to the helical groove 61d is formed in the nut 52 fixed to the upper surface 12d of the housing 10, . For example, the pressing rod 50 is composed of a ball screw shaft, and the nut 52 is made of a ball nut through which the pressing rod 50 passes.

When the handle 61f of the spoke 64 is grasped by hand and turned, the pressing rod 50 fixed to the hub 61b is rotated. When the pressing rod 48 rotates, the thread groove 61d of the pressing rod 48 and the thread 61e of the nut 52 act to vertically move the pressing rod 50 downward. When the handle 61 is rotated in the opposite direction, the pressing rod 50 vertically moves upward.

A pressing ball 51, which is in point contact with the upper surface of the lever 20, is integrally provided at a lower end of the pressing rod 50. A seating block 55 having a seating groove 54 for seating the pressing ball 51 is installed on a rear upper surface of the lever 20. A bracket 53 for covering the upper surface of the pressing ball 51 is provided on the upper surface of the lever 20. [

9 shows another embodiment of a portable type air bag 1 for a cable tray in which a wheel-shaped handle 61 is provided at the upper end of the pressure bar 50 and a hinge shaft 73 is provided at the lower end thereof so as to be rotatable back and forth. An example is shown.

As shown in the drawing, a lower connecting plate 72 protruding upward and formed with a through hole is integrally provided on the upper surface of the lever 20, a lower portion of the pressing rod 50 protrudes downward, The upper connecting plate 74 is formed. The through hole of the lower connecting plate 72 and the upper connecting plate 74 penetrates the hinge shaft 73 and is rotatably mounted around the hinge shaft 73.

A bearing 77 is installed on the lower end of the pressure bar 50 so that the pressure bar 50 can rotate in the horizontal direction. The bearing 77 is installed between the fixing part 76 integrally formed at the lower end of the pressing rod 50 and the upper connecting plate 74 so as to be rotatable in the horizontal direction. A bracket 75 surrounding the upper surface of the fixing portion 76 is integrally fixed to the upper connection plate 74 so that the fixing portion 76 rotates in the horizontal direction.

When the handle 61 is rotated to one side, the pressing rod 50 rotates in the horizontal direction through the bearing 77. When the pressing rod 50 rotates in the horizontal direction, the pressing rod 50 And the screw rod 61e formed on the inner circumferential surface of the nut 52 interact to vertically move the pressing rod 50 downward and the pressing rod 50 is moved downward When vertically moving, the lever 20 connected to the lower end of the pressure bar 50 is pressed downward. At this time, when the lever 20 is rotated downward, the pressing rod 50 rotates about the hinge shaft 73 and is always rotated And maintains verticalness. When the lever 20 is rotated downward, the punch 30 disposed close to the rotation shaft 21 is lowered to form a connection hole 3 in the cable tray 2.

When the handle 61 is operated in the opposite direction, the pressing rod 50 rotates in the horizontal direction through the bearing 77. When the pressing rod 50 rotates in the horizontal direction, The threaded groove 61e formed on the outer circumferential surface of the nut 50 and the screw thread 61e formed on the inner circumferential surface of the nut 52 interact to vertically move the pressing rod 50 upward. When the pressing rod 50 vertically moves upward, the bracket 76, the upper connecting plate 74, and the lower connecting plate 72 formed on the lever 20 are connected to the lower end of the pressing rod 50 The lever 20 is moved upward. When the lever 20 rotates upward about the rotary shaft 21, the pressing rod 50 rotates about the hinge shaft 73 so that the lever 20 can rotate smoothly. When the lever 20 is pivoted upward, the punch 30 is separated from the lower mold 40. At this time, the scrap separated from the connection hole 3 of the cable tray 2 is removed from the housing 10 And falls into the inside.

Next, FIG. 10 shows a portable type air bag 1 for a cable tray provided with a hydraulic cylinder 65 at the upper end of the pressure rod 50.

As shown in the figure, the hydraulic cylinder 63 includes a cylinder 63a having a first inlet 63b and a second inlet 63c, and a rod 63d vertically reciprocally movable in the cylinder 63a. ). The lower end of the rod 63d is connected to the upper end of the pressing rod 50 through a coupler 63e. A hydraulic hose is connected to the first inlet 63b and the second inlet 63c and connected to a predetermined hydraulic pressure supply device and a hydraulic control valve.

Accordingly, when the hydraulic pressure is supplied to the first inlet 61b of the cylinder 63a, the rod 63d moves downward to move the pressing rod 50 downward to rotate the lever 20 downward. Conversely, when hydraulic pressure is supplied to the second inlet 63c of the cylinder 63a, the rod 63d is moved up and down to move the pressing rod 50 upward, so that the lever 20 is rotated upward.

11 shows a portable type air bag 1 for a cable tray provided with an electric motor 65 at the upper end of the pressure bar 50. As shown in Fig.

As shown in the figure, a rack 75d is formed on one side of the pressing rod 50 and a pinion 65c is provided on the driving shaft 65b of the motor 65a. Accordingly, when the motor 65a is rotated to one side, the pressing rod 50 is moved downward by the action of the pinion 65c and the rack 65d. When the rotor 65a is rotated to the other side, the pinion 65c And the rack 65d move the pressing rod 50 upward.

As described above, according to the present invention, in the case of the air bag 1 for a cable tray of the present invention, various types of driving means (70: 61, 63, 65) are provided in the pressing rod 50, 3).

Hereinafter, the operation of the air bag 1 for a cable tray according to the present invention will be described.

First, the cable tray 2 is inserted into the opening 11 of the air bag 1 for a cable tray of the present invention. At this time, the position of the cable tray 2 is determined through the aligning tool 5 provided in the air bag 1 for the cable tray.

Then, when the pressing rod 50 is moved downward by using the driving means 70 of the present invention, the lever 20 is rotated downward about the rotary shaft 21. At this time, the pressing ball 40 provided at the lower end of the pressure bar 50 always contacts with the upper surface of the lever 20, so that the lever 20 can be pressed regardless of the rotation of the lever 20.

When the lever 20 is pivoted downward, the punch 30 installed on the lower surface of the lever 20 passes through the cable tray 2 inserted into the opening 11 to form the connection hole 3 do. The punch 30 is inserted into the lower mold 40 provided at the lower portion.

Then, when the pressing rod 50 is moved upward by using the driving means 70 of the present invention, the lever 20 is rotated upward about the rotary shaft 21. At this time, a bracket 53 provided on the upper surface of the lever 20 covers the upper surface of the pressure bar 50, and when the pressure bar 50 moves upward, the lever 20 is rotated upward.

When the lever 20 is pivoted upward, the punch 30 inserted in the lower mold 40 is separated and the scrap separated from the connection hole 3 of the cable tray 2 is separated from the housing 10 As shown in FIG.

Although the description has been made with reference to forming the connection hole 3 in the cable tray 2 in the present specification, since the portable air intake 1 of the present invention can form a hole in a plate material other than the cable tray 2, Is not limited to the connection hole in the cable tray. In this specification, a driving means using a rack and a pinion is disclosed, but it should be understood that the present invention is not necessarily limited thereto, since the pressing rod 50 can be operated by using a power transmitting means other than a rack and a pinion.

  It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be clear to those who have knowledge of.

1: Portable air intake 2: Cable tray
3: hole for connection 10: housing
11: opening 12a: bottom plate
12b, 12c: vertical plate 12d: upper plate
20: lever 21:
25: aperture hole 26: through hole
27: fastening bolt 28: pressure plate
30: Punch 31: Punch guide
35: connection portion 36: long hole
40: lower mold 50: pressure rod
51: pressure ball 52: nut
53: bracket 54: seat groove
55: seat block 61: handle
61a: hub 61b: rim
61d: screw groove 61e: screw thread
63: Hydraulic cylinder 63a: Cylinder
63b, 63c: inlet 63d: rod
65: electric motor 65a: rack
65b: Pinion 65c:
72: lower connecting plate 73: hinge shaft
74: upper connection plate 75: bracket
76: Fixed portion 77: Bearing

Claims (17)

Portable air for cable trays for forming connection holes in cable trays,
A housing having a predetermined size formed therein and having an opening through which the cable tray is inserted at a predetermined length;
A lever provided inside the housing and provided to be vertically pivotable about a rotation axis provided at a tip end;
A punch disposed on a lower surface of the lever so as to be close to the rotation axis and forming a connection hole in a cable tray inserted in the opening;
A lower mold provided below the opening to correspond to the punch;
A pressing bar installed to be in constant contact with an upper surface of a rear end of the lever and movable up and down in the housing;
And driving means connected to the pressure bar to move the pressure bar up and down,
Wherein an arc-shaped pressure plate for pressing the upper surface of the punch is integrally formed on the lower surface of the lever, and the punch is installed so as to pivot forward and backward and to move back and forth a predetermined distance.
delete The method according to claim 1,
Wherein a spherical pressing ball is provided at a lower end of the pressing rod so that the lever can be pressed regardless of the rotation of the lever.
The method of claim 3,
The pressing ball formed at the lower end of the pressing rod may be in the form of a sphere, an ellipse, or a back plate. A bracket at least partially surrounding the upper surface of the pressing rod is provided on the upper surface of the lever. Wherein a curved surface corresponding to a curved surface of the pressing ball is formed on an inner surface of a bracket provided on an upper surface of the lever.
The method according to claim 1,
A bearing for allowing the pressing rod to rotate in the horizontal direction and a hinge shaft for rotating the pressing rod forward and backward are provided at the lower end of the pressing rod so that the lever can be pressed regardless of the rotation of the lever Portable air for cable trays.
6. The method of claim 5,
A lower connecting plate having a through hole formed in an upper surface of the lever, a hinge shaft being fixed to the through hole of the upper connecting plate and the lower connecting plate through the through hole, A bracket for covering an upper surface of the fixing part is provided on the upper connecting plate so that the lever can be turned upward when the pressing rod is lifted up As a feature, it is a portable tar air for cable trays.
7. The method according to any one of claims 1 to 6,
The punch is formed in a cylindrical or square pillar shape, and a connecting portion extending to a predetermined length is formed integrally at an upper end of the punch. The connecting portion is formed with a through hole through which a fastening bolt penetrates, Wherein a through hole is formed in each side wall of the through hole and a through hole is formed in the side wall of the through hole so as to penetrate through the through hole and the slot so as to be rotatably coupled by a fastening bolt.
8. The method of claim 7,
Wherein the lever is provided with one or more punches.
8. The method of claim 7,
Wherein a plurality of punches are provided at a lower end of the connection portion, and the plurality of punches are installed so as to be rotatable back and forth through a fixing pin.
delete delete 8. The method of claim 7,
And a punch guide for enclosing the punch is provided on a lower surface of the lever.
The method of claim 3,
Wherein a seating groove having a curvature corresponding to a curvature of the pressing ball is formed on a rear upper surface of the lever.
7. The method according to any one of claims 1 to 6,
Wherein at least two of the levers are disposed in parallel, and the lever is provided with one or more punches to form a plurality of connecting holes in the cable tray.
7. The method according to any one of claims 1 to 6,
Wherein the driving means comprises a hub, a handle formed of a rim and a spoke, and a screw thread is formed on an outer circumferential surface of the pressing rod, and a thread is formed on an inner circumferential surface of a nut fixed to the upper plate of the housing. Get in the air.
7. The method according to any one of claims 1 to 6,
Wherein the driving means comprises a cylinder having a first inlet and a second inlet, and a rod vertically movably disposed in the cylinder, and the rod is coupled to an upper end of the pressure rod. air.
7. The method according to any one of claims 1 to 6,
Wherein the driving means comprises a driving motor, a rack fixed to one surface of the pressing rod, and a pinion provided on a driving shaft of the driving motor.

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