WO2019208841A1

WO2019208841A1 - Pipe connection device and tightening device for same

Info

Publication number: WO2019208841A1
Application number: PCT/KR2018/004703
Authority: WO
Inventors: 임민섭
Original assignee: Lim Min Sub
Priority date: 2018-04-23
Filing date: 2018-04-23
Publication date: 2019-10-31

Abstract

The present invention relates to: a pipe connection device for coupling pipes provided as a flow passage for fluid and the like; and a tightening device capable of easily fastening and releasing the pipe connection device to/from the pipes. The pipe connection device according to the present invention has a locking part for fastening/releasing the pipe connection device to/from a main pipe, wherein the locking part is gear-shaped. In addition, the tightening device comprises: a support member removably coupled to the main pipe, and having a power transmission member rotatably coupled thereto; and the power transmission member, which is supported by the support member, is formed to be gear-shaped so as to be mechanically coupled to the locking part, and has a coupling part to be mechanically coupled with a power driving means.

Description

Pipe joints and fasteners for them

The present invention relates to a pipe connecting device for joining a pipe provided as a flow passage of a fluid or the like, and a tightening device for easily fastening and releasing the pipe connecting device to the pipe.

In order to supply fluids, such as tap water and a gas, the inside of the hollow flow pipe called a pipe is employ | adopted. In addition to these pipes, a valve or the like for opening and closing the flow of the fluid is employed. Appropriate pipe connecting devices are adopted at the site of connecting pipes and pipes or connecting pipes and valves.

1 is a view showing an example of a conventional pipe connecting device, Figure 2 is a perspective view of the pipe connecting member 3 in Figure 1 viewed from a different angle. In the drawings, reference numeral 1 denotes an end of a pipe or valve to which another pipe is fastened, that is, a part to which another pipe is coupled. Another pipe 2 is inserted into this valve or pipe 1 to be fastened. Hereinafter, for clarity, the valve or pipe 1 is referred to as a main pipe, and the pipe 2 coupled to and connected thereto is called a connecting pipe. A pipe connecting device 3 is employed to removably couple the connecting pipe 2 to the main pipe 1.

Pipe connectors exist of various types and shapes. In the drawing, the pipe connecting device 3 has a body 31, and a locking portion 32 is formed on the outer circumferential surface of the body 31. The body 31 is formed with a hollow 33 in the longitudinal direction thereof. The connecting pipe 2 is inserted into the main pipe 1 through the hollow 33. In addition, a threaded portion 34 is formed on an outer circumferential surface of the body 31, and a threaded portion (not shown) that is engaged with the threaded portion 34 is provided on an inner circumferential surface of the main pipe 1. The locking portion 32 is configured such that the outer circumferential surface has a polygonal shape, for example, a hexagon. The lock 32 is for the operator to rotationally drive the pipe connecting device 3 using a tightening device such as a spanner or a wrench.

When coupling the connecting pipe 2 to the main pipe 1, the worker inserts the connecting pipe 2 into the main pipe 1 through the hollow 33 of the pipe connecting device 3, using a wrench. The pipe connecting device 3 is fastened to the main pipe 1 by rotating the locking part 32 of the pipe connecting device 3 in one direction. The operation of removing the connecting pipe 2 from the main pipe 1 is performed by rotating the locking part 32 in the other direction, that is, in the opposite direction to the one direction. Although not specifically shown in the drawings, the pipe connecting device 3 secures the connecting pipe 2 when fastening it to the main pipe 1 so as to prevent the connecting pipe 2 from being separated from the main pipe 1. For example, various coupling members, such as a pressing member, are provided.

On the other hand, when fastening the pipe connecting device to the pipe as described above, a tightening device such as a wrench is employed. Various fasteners exist. For example, Republic of Korea Utility Model Registration Application No. 1992-0004185 (name: pipe wrench). Patent Application No.1993-0027438 (Name: Pipe Wrench), Patent Application No.1995-0034080 (Name: Ratchet Wrench), Utility Model Registration Application No. 20-1996-0011955 (Name: Pipe Wrench Support) , Utility Model Registration Application No. 1996-0020319 (Name: Pipe Ranch), Utility Model Registration Application No. 1996-0020881 (Name: Chain Pipe Ranch), Patent Application No. 10-2002-0026775 (Name: Pipe Wrench), Patent application No. 10-2008-0125398 (named pipe wrench) and Patent Application No. 10-2014-0131467 (name: portable pipe wrench) and the like disclose various fastening devices that can be used manually by the operator. These hand pipe wrenches have a head and a handle. The operator rotates the head and the locking part 32 by fastening the head to the locking part 32 of the pipe connecting device and then rotating the handle in the circumferential direction thereof. The pipe connection is thus fastened or released. Manual pipe wrench has the advantage that the structure is simple, but there is a disadvantage that the work is cumbersome because the fastening and releasing operation of the pipe connecting device is made by hand.

In view of the above circumstances, an electric pipe wrench has been proposed. In this regard, international patent publication WO 87/02609 (name: power pipe wrench), Republic of Korea Patent Application No. 1995-0036534 (name: ratchet wrench for electric pipe), Patent Application No. 1996-045800 (name: portable electric pipe wrench ) And Patent Application No. 10-2009-0027615 (name: electric wrench) and the like. They basically include a head which is detachably fastened to the locking part 32 of the pipe connecting device, and a driving part which rotationally drives the locking part 32 using, for example, electric power. The electric pipe wrench enhances the operator's convenience because the operator can fasten and release the pipe connection by simply operating a switch. However, since the electric pipe wrench is coupled to the locking portion 32 of the polygonal structure of the pipe connecting device and is driven to rotate, the driving structure becomes complicated, and it is also implemented to have versatility for pipe connecting devices having various diameters. In order to do so, there is a disadvantage in that the design freedom of the structure is very low.

In particular, when connecting a large diameter pipe, such as a water supply pipe, the size of the pipe connecting device used for pipe connection is also relatively large. However, when the size of the pipe connection device is increased in this way, the size of the pipe wrench for fastening and releasing it to the pipe is also large. That is, in the case of a manual pipe wrench, when the size of the pipe connecting device becomes large, the size of the head to be fastened to it is essentially increased, and the length of the handle will need to be lengthened to apply a relatively large rotational force to the head. In addition, the increase in mechanical appearance greatly increases the size and weight of the pipe wrench, thereby greatly reducing the portability and workability of the pipe wrench. In the same way as the electric pipe wrench, as the size of the pipe connecting device increases, the weight of the head that is essentially connected to the size increases. Increasing the size and weight of the head of the pipe wrench increases the size and weight of the power transmission structure for efficiently driving it, thereby increasing the overall size and weight of the pipe wrench. This will lower the portability and workability of the pipe wrench, and in severe cases will require a structural change and improvement of the power transmission structure and its power source.

The present invention has been made in view of the above circumstances, and has a technical object to provide a pipe connecting device that is capable of easily executing a fastening and releasing operation by applying a general electric, pneumatic or hydraulic power unit.

In another aspect, the present invention is applicable to the pipe connecting device described above, and another object of the present invention is to provide a tightening device capable of greatly improving the portability and convenience of an operator.

The pipe connecting device according to the first aspect of the present invention for realizing the above object is fastened to prevent the separation of the connecting pipe to the main pipe, the pipe connecting device screwed with the main pipe, the body hollow in the longitudinal direction And a pressing member integrally formed with the body or interlocked with the body, for pressing the connecting pipe inserted through the hollow when the pipe connecting device is fastened to the main pipe, and installed on the outer or outer circumferential surface of the body. It is configured to include a locking portion, the locking portion is characterized in that it has a cylindrical body, the teeth formed on the outer peripheral surface of the body as a whole.

According to the present invention, since the operator can easily fasten or remove the pipe connecting device with respect to the main pipe by using the power drive means, the operator's convenience is greatly improved. In addition, since the fastening operation of the pipe connecting device to the main pipe is made by a constant driving torque by the power drive means, the fastening state of the pipe connecting device to the main pipe can be always kept stable and constant.

The drawings below are for effectively explaining the contents of the present invention, and some of the components are exaggerated or omitted. In addition, the same reference numerals are added to substantially the same parts throughout the drawings.

1 is a view showing an example of a conventional pipe connecting device (3).

FIG. 2 is a perspective view of the pipe connecting member 3 in FIG. 1 viewed from another angle.

Figure 3 is a perspective view showing the main configuration of the pipe connecting apparatus according to the first embodiment of the present invention.

4 is a perspective view showing a tightening device for fastening and releasing the pipe connecting device 10 with respect to the main pipe 1.

5 is an exploded perspective view of the tightening device shown in FIG. 4.

6 is a perspective view showing another configuration example of the power transmission member 40 in FIG.

7 is a view showing a state in which the fastening device is coupled to the pipe connecting device (10).

8 is a perspective view showing the appearance of the impact wrench 80 as one of the power drive means for the power transmission member 40.

9 is a perspective view illustrating main parts of another configuration for fastening the power transmission member 40 to the support member 50.

Figure 10 is a perspective view showing the main structure of the pipe connection device and its tightening device according to a second embodiment of the present invention.

FIG. 11 is a view for explaining the operation of the tightening device shown in FIG. 10; FIG.

12 is a perspective view showing another example of the configuration of the impact wrench (80).

FIG. 13 is a view for explaining an operation of fastening the pipe connecting device 10 using the impact wrench 80 shown in FIG. 12.

14 to 16 are perspective views showing the shape of the gear cap for the conventional pipe connecting device (3).

17 is a cross-sectional view in a state in which the gear cap 160 of FIG. 16 is coupled to the pipe connecting device 3.

In addition, the front end of the main pipe is provided with a flange, the upper surface of the flange is characterized in that the support shaft for rotatably supporting the power transmission member or power drive means mechanically coupled to the locking portion.

Fastening device according to a second aspect of the present invention is screwed to the main pipe, coupled to the main pipe to prevent the separation of the main pipe, and for locking the screw with the main pipe having a locking portion on the outer or outer peripheral surface A fastening device for rotationally driving a pipe connecting device in one side or the opposite direction, the fastening device being detachably coupled to the main pipe and being supported by the support member to which the power transmission member is rotatably coupled. It is characterized in that it comprises a power transmission member mechanically coupled to the lock portion, the power transmission member having a coupling portion for mechanical coupling with the power drive means.

In addition, the lock portion is provided with a gear cap on the outside, the power transmission member is characterized in that the gear is coupled to the lock portion.

In addition, the locking portion is formed in a cylindrical shape and the teeth are formed on the outer peripheral surface as a whole, the power transmission member is provided with a cylindrical body, the teeth on the outer peripheral surface of the power transmission member body is formed as a whole for coupling the lock and the gear. It is characterized by.

In addition, the support member is formed with one or more support shafts, characterized in that the coupling groove is formed to be coupled to the support shaft and the lower surface of the body of the power transmission member is formed.

In addition, the support member is provided with a through hole for coupling the power transmission member, the body of the power transmission member is provided with a coupling shaft inserted into the through hole, the coupling groove is formed at the end of the coupling shaft, the coupling groove It characterized in that the snap ring is fastened to prevent the power transmission member from being separated from the support member.

In addition, the coupling portion is characterized in that the polygonal coupling groove is provided.

In addition, the coupling portion is characterized in that consisting of a polygonal columnar shape.

In addition, the power drive means is characterized in that it is operated by electric, pneumatic or hydraulic.

Fastening device according to a third aspect of the present invention is screwed to the main pipe, coupled to the main pipe to prevent the separation of the main pipe, and the locking portion on the outer or outer peripheral surface of the body for screwing the main pipe In the tightening device for rotationally driving the pipe connecting device in one side or the opposite direction, the support member is coupled to the main pipe so as to be removable and the support shaft is formed on the upper side, and can be removed to the support shaft In addition to having a coupling groove which is provided with a wrench coupling portion mechanically coupled to the lock portion, comprising a power drive means for rotationally driving the wrench coupling portion in one or the opposite direction by electric, pneumatic or hydraulic pressure It features.

Hereinafter, an embodiment according to the present invention will be described with reference to the drawings. However, the embodiments described below exemplarily illustrate one preferred embodiment of the present invention, and examples of such embodiments are not intended to limit the scope of the present invention. The present invention can be carried out in various modifications without departing from the spirit thereof.

3 is a perspective view showing a main configuration of a pipe connection device according to a first embodiment of the present invention. The pipe connecting device 10 is for joining or fastening the main pipe 1 and the connecting pipe 2 to be separated later. As mentioned above, the main pipe 1 comprises a pipe or valve through which fluid flows through the inner hollow. In this embodiment, the pipe connecting device 10 is provided with a body 11, the locking portion 12 is formed on the outer or outer peripheral surface of the body (11). The hollow 11 is formed in the body 11 along the longitudinal direction. And the outer peripheral surface of the body 11 is formed with a screw portion 14 for fastening the pipe connecting device 10 to the main pipe (1). The inner circumferential surface of the main pipe 1 has a threaded portion corresponding to the threaded portion 14. Accordingly, when the pipe connecting device 10 is rotated in one direction or the opposite direction with respect to the main pipe 1, the pipe connecting device 10 is fastened to the main pipe 1 or the fastening state thereof is released. These are for detachably fastening the pipe connecting device 10 to the main pipe (1).

In the present invention, the configuration or shape of the body 11 of the pipe connecting device 10 is not required to be specific. Although not shown in detail in the drawing, when the connecting pipe 3 is fastened to the main pipe 1, the connecting pipe 3 is appropriately pressurized to connect the pipe 3 to the main pipe (11). 1) may be provided with a pressing member for preventing the departure from. In addition, the body 11 may be provided with a shape and structure for appropriately applying pressure to the pressing member. The fastening method of the pipe connecting device 10 and the main pipe 1 is not limited to a specific structure. For example, a space portion for inserting the main pipe 1 is provided between the body 11 and the lock portion 12, and the inner peripheral surface of the lock portion 12 is fastened to the outer peripheral surface of the main pipe 1. Means may be appropriately provided. Utility Model Registration No. 20-0246583 (Name: Plastic Pipe End Connection), Utility Model Registration No. 20-120330 (Name: One Touch Insertion Pipe End Connection), Patent Registration No. 10-1329279 (Name: Pipe Connection Structure and Connection Method) ), Patent Publication No. 10-2009-0035941 (name: pipe connection structure), Patent Publication No. 10-2004-0041866 (name: pipe connection device), Patent Publication No. 2002-0011000 (name: pipe connection socket Clamping ring structure) and Japanese Patent Laid-Open No. 1999-0037879 (name: pipe connecting structure) disclose a pipe connecting device having various structures. The present invention can be applied and practiced in the same manner for any type of pipe connecting device in which the locking portion 12 is provided on the outer or outer circumferential surface of the body 11.

The locking portion 12 is for the operator to fasten or release the pipe connecting device 10 to the main pipe (1). The operator fastens or releases the pipe connecting device 10 to the main pipe 1 by rotating the pipe connecting device 10 in one direction or the opposite direction by applying a rotational force to the lock 12. As shown in FIG. 1, the conventional locking part 3 has a polygonal shape, whereas the locking part 12 is circular in this embodiment. And the tooth | gear 121 is formed in the outer peripheral surface of this locking part 12 as a whole. Accordingly, the locking part 3 has the shape of a gear. The locking part 3 will preferably be mechanically coupled with a power transmission member such as drive means which are electrically, pneumatically or hydraulically operated, or other gears which are rotationally driven by these drive means. Preferably, the locking portion 12 is formed in the shape of a spur gear or a helical gear as a whole. However, in a special case, the locking part 12 may be configured in the shape of a bevel gear or a worm gear in consideration of the coupling position with the driving means or the power transmission member.

4 is a perspective view showing a tightening device for fastening and releasing the pipe connecting device 10 with respect to the main pipe 1, Figure 5 is an exploded perspective view thereof. In this embodiment, the tightening device is basically provided with a power transmission member (40). The power transmission member 40 efficiently transmits the rotational force of the driving means, which is operated by, for example, electric, pneumatic or hydraulic pressure, to the locking portion 3 efficiently. The power transmission member 40 has a cylindrical body 41. A tooth 41a is formed on the outer circumferential surface of the body 41 as a whole. The teeth 41a are mechanically coupled to the teeth 121 of the locking part 12 provided in the pipe connecting device 10. The power transmission member 40 has a gear shape as a whole. The power transmission member 40 may have a shape of a spur gear or a helical gear corresponding to the shape of the locking part 12. In addition, the power transmission member 40 may be configured in the form of a bevel gear or worm according to the engagement position and angle with the locking portion 12.

In addition, the coupling portion 42 is provided on the body 41 of the power transmission member 40. Coupling portion 42 is preferably formed to protrude from body 42. In the present embodiment, the upper portion of the coupling portion 42 is formed with a groove 42a of a polygon, for example, a hexagon. In addition, in the modification shown in Figure 6, the coupling portion 60 provided in the body 41 is made of a polygonal, for example hexagonal columnar shape as a whole. Wrenches will be removably coupled to the

engagement portions

42 and 60. The structure or shape of the

coupling parts

42 and 60 is not required to be specific. For example, the

coupling parts

42 and 60 may have a polygonal column shape and polygonal grooves may be provided on an upper surface thereof. The structure and shape of the engaging

portions

42 and 60 may preferably be any other structure in which the driving force of the wrench can be effectively transmitted.

The power transmission member 40 is preferably rotatably supported by the main pipe 1. As shown in the figure, the support member 50 may be preferably employed for the power transmission member 40. In the figure, the support member 50 has a body 51 which is removably coupled to the main pipe 1. The support shaft 52 for rotatably supporting the power cutting member 40 is installed on the upper surface of the body 52. The power transmission member 40 is coupled to the support shaft 52 so as to be rotatable. To this end, although not shown in detail in the drawing, the coupling groove into which the support shaft 52 is inserted is formed at the bottom of the power transmission member 40. The power transmission member 40 is detachably coupled to the support shaft 52. And the support shaft 52 is installed at a suitable position so that the power transmission member 40 is properly coupled with the locking portion 12 of the pipe connecting device 10.

The gear ratio of the power transmission member 40 and the pipe connecting device 10 is appropriately set. Assuming that the driving torque of the drive means for driving the power transmission member 40 is the same, the greater the force required to fasten and release the pipe connection device 10, the power transmission member 40 and the pipe connection device 10 It may be desirable to set the reduction ratio with and larger. In addition, various types of power transmission members may be provided so that an operator may change gear ratios of the power transmission member 40 and the pipe connection device 10 according to the working environment. A plurality of support shafts may be provided in the support member 50 to accommodate various power transmission members. These support shafts will be arranged to have a different distance from the locking portion 12 of the pipe connection 10. In addition, as another preferred embodiment, a guide groove or a sliding member for appropriately changing the installation position of the support shaft 52 may be provided.

In a preferred embodiment, the body 51 is configured in the form of a pipe clamp or profile clamp, for example. That is, the body 51 has semicircular first and

second bands

511 and 512. A coupling hole 513 is formed at one end of the first band 511, and a coupling protrusion 514 is provided at one end of the second band 512, and the coupling hole is positioned at a position corresponding to the coupling hole 513. 514a is formed. Coupling pins 515 are coupled to these

coupling holes

513 and 514a. Fastening

holes

516 and 517 are formed at the other ends of the first and

second bands

511 and 512, respectively. In addition, fastening means 518 such as bolts and nuts are fastened to these

fastening holes

516 and 517. The first and

second bands

511 and 512 rotate about the coupling pin 515 so that the other ends thereof are spaced apart from each other or close to each other. As described above, the support shaft 52 is formed on the upper surface of the body 50, more specifically, the predetermined position of the upper surface of the second band 512, and a power transmission member coupled to the support shaft 52 ( The protective cover 53 is provided outside the 40. As described above, the support member 50 is for stably supporting the power transmission member 40 with respect to the main pipe 1. The support member 50 is removably fastened to the main pipe 1, and any structure capable of rotatably supporting the power transmission member 40 can be employed in the same manner.

Next, the operation of the pipe connecting device 10 according to the present invention and a tightening device for fastening and releasing it will be described with reference to FIG. 7. 7 is a view showing a state in which the tightening device is coupled to the pipe connecting device (10). In the state in which the main pipe 1 and the connecting pipe 2 are coupled, one end of the connecting pipe 2 is inserted into the front end of the main pipe 1 through the hollow 13 of the pipe connecting device 10. , Pipe connection device 10 is firmly fastened to the main pipe (1). In addition, when the connection pipe 2 is to be fastened to the main pipe 1, the operator first ends one end of the connection pipe 2 through the hollow 13 of the pipe connection device 10. It will be inserted inward. In addition, the pipe connecting device 10 is appropriately fastened to the main pipe 1 by manually rotating the pipe connecting device 10 without using a tightening mechanism such as a pipe wrench. Thereafter, a conventional pipe wrench or a fastening device of the present invention is employed to firmly fasten the pipe connecting device 10 to the main pipe 1.

In the present invention, when fastening or releasing the pipe connecting device 10 with respect to the main pipe (1), the operator is to couple the support member 50 to the front end of the main pipe (1). That is, the worker arranges the first and

second bands

511 and 512 of the body 51 of the support member 50 to surround the outer circumferential surface of the distal end portion of the main pipe 1 and uses the fastening means 518. Thus, the ends of the first and

second bands

511 and 512 are fastened. At this time, as the inner diameter of the body 51 is reduced as the fastening means 518 is fastened, the support member 50 will be firmly fixed to the outer circumferential surface of the main pipe 1. And the operator is coupled to the power transmission member 40 to the support shaft 52 of the support member 50. When the power transmission member 40 is installed, its teeth 41a mesh with the teeth 121 of the locking portion 12 of the pipe connection device 10 so that the pipe connection device 10 is mechanically coupled to the power transmission member 40. Are combined. Subsequently, the operator fastens or releases the pipe connecting device 10 with respect to the main pipe 1 by rotating the power transmission member 40 in one side or the opposite direction.

Rotational driving of the power transmission member 40 can be performed by using manual driving means such as a general wrench, and preferably, power driving means operated by electricity, pneumatic or hydraulic pressure is employed. When the operator uses the manual driving means at the time of fastening the pipe connecting device 10, the pressing members for pressing the connecting pipe 2 may be damaged by excessive fastening of the pipe connecting device 10. This problem has often occurred in the process of fastening the conventional pipe connecting device 3 shown in FIG. In the case of employing the power driving means when the pipe connecting device 10 is fastened, the pipe connecting device 10 is provided with a constant driving torque through the power transmission member 40, so that the pipe connecting device for the main pipe 1 ( The clamping force of 10) is set constant. That is, the fastening operation and the fastening state of the pipe connecting device 10 are made constant and stable.

8 is a perspective view showing one example of the electric power drive means, so-called impact wrench, as one of the power drive means for the power transmission member 40. In the figure, the impact wrench 80 is made entirely in the shape of a pistol. The main body 81 has a rectangular shape. An electric motor and a circuit unit for driving the same are housed inside the main body 81. The drive shaft 82 is detachably coupled to the distal end of the main body 81, and a wrench coupling portion 83 is provided at the end of the drive shaft 82. The wrench coupling portion 83 is appropriately selected according to the shape of the

coupling portions

42 and 60 of the power transmission member 40. A handle 84 is provided on the rear side of the main body 81 in a downward direction, and a trigger 85 is provided on an upper front end portion of the handle 84. The lower end of the handle 84 is connected to a power line 86 for supplying electricity to the impact wrench (80). In addition, the handle 84 is provided with a selection switch 87 for setting the rotational direction of the drive shaft 82 in one direction or the opposite direction.

In FIG. 7, when the pipe coupling device 10 is fastened, the worker holds the handle 84 of the impact wrench 80 by hand and the wrench coupling part 83 is the

coupling part

42, 60 of the power transmission member 40. ) Is mechanically coupled. In addition, after setting the rotation direction of the drive shaft 82 appropriately by using the selection switch 87, the impact wrench 80 is operated by pressing the trigger 85. When the impact wrench 80 is operated, the drive shaft 82 rotates with a constant drive torque, and thus the power transmission member 40 mechanically coupled to the drive shaft 82 rotates. When the power transmission member 40 is rotated in one direction, the pipe connecting device 10 is gear-coupled with this is rotated in the opposite direction. When the pipe connecting device 10 is fastened, the pipe connecting device 10 rotates and enters the inside of the main pipe 1, and the pressure members therein press the outer circumferential surface of the connecting pipe 2. When the pressing force on the connecting pipe 2 or the coupling force between the main pipe 1 and the pipe connecting device 10 increases, the load on the rotational driving of the pipe connecting device 10 increases correspondingly, and this load is reversed. It is transmitted to the motor through the drive shaft 82 of the power transmission member 40 and the impact wrench (80). When the pipe tightening operation is further progressed and the load rises above the driving torque of the motor, the operation of the impact wrench 80 is forcibly stopped. At this time, the operator terminates the fastening operation for the connection pipe 10 by detaching the impact wrench 80 from the power transmission member 40. Accordingly, the pipe connecting device 10 is always stable to the main pipe 1 and is fastened with a constant coupling force.

When releasing the pipe connecting device 10 from the main pipe 1, the operator holds the handle 84 of the impact wrench 80 by hand in the same manner as the fastening operation of the pipe connecting device 10 described above. 83 is mechanically coupled to the

coupling parts

42 and 60 of the power transmission member 40. In addition, after setting the rotation direction of the drive shaft 82 appropriately by using the selection switch 87, the impact wrench 80 is operated by pressing the trigger 85. At this time, the rotation direction of the drive shaft 82 is set in the reverse direction to the case of fastening the pipe connecting device (10). When the impact wrench 80 is operated, the power transmission member 40 rotates in the same manner as the above-described operation. As a result, the pipe connecting device 10 rotates while the pipe connecting device 10 rotates outward from the main pipe 1. Will be dismissed. When the separation distance of the pipe connecting device 10 is greater than or equal to a predetermined value, the pressing force applied to the connecting pipe 2 by the pressing members is removed or lowered. In addition, the fastening force between the main pipe 1 and the pipe connecting device 10 due to the reaction of the pressing force is greatly reduced. In this case, the worker can manually rotate the pipe connecting device 10. In this state, the operator removes the power transmission member 40 from the support member 50 or removes the support member 50 from the main pipe 1, and then manually rotates the pipe connecting device 10 so that the main pipe 1 Remove the pipe connection 10 from the.

9 is a perspective view illustrating main parts of another configuration for fastening the power transmission member 40 to the support member 50. In the embodiment of Figure 5, the support shaft 52 for supporting the power transmission member 40 is installed on the upper surface of the second band 512 constituting the body 51 of the support member 50, the power transmission member 40 is attached to this support shaft 52 so that removal is possible. In the present embodiment, the coupling shaft 90 is provided on the body 41 of the power transmission member 40, and the through hole 520 for inserting the coupling shaft 90 is provided in the second band 512. do. The coupling shaft 40 of the power transmission member 40 is rotatably coupled to the through hole 520. In addition, a fastening groove 91 is formed at an end of the drive shaft 40 along the outer circumferential surface, and the snap ring 93 is fastened through the washer 92. The snap ring 93 is for preventing the power transmission member 40 from being separated from the support member 50. In this embodiment, the power transmission member 40 can be rotated with respect to the support member 50 while being prevented from being separated. In addition, since other configurations and operations are substantially the same as the above-described embodiment, a more detailed description thereof will be omitted.

FIG. 10 is a perspective view illustrating a main portion of a pipe connecting device and a fastening device according to a second embodiment of the present invention. FIG. In the present embodiment, the flange 110 is provided at the end of the main pipe 1, that is, the portion to which the pipe connecting device 10 is fastened. This flange 110 is provided as a support member for the power transmission member 40. The flange 110 is integrally formed with the main pipe 1 or fastened through a separate fastening means. A support shaft 111 for rotatably supporting the power transmission member 40 is formed at a predetermined position on the upper surface of the flange 110. The power transmission member 40 is detachably coupled to the support shaft 111. The support shaft 111 is installed at an appropriate position such that the power transmission member 40 is properly engaged with the locking portion 12 of the pipe connecting device 10. In addition, in this embodiment, as in the above-described embodiment, various types of power transmission members may be provided so that an operator may change gear ratios of the power transmission member 40 and the pipe connecting device 10 according to the working environment. A plurality of support shafts having different separation distances from the locking portion 12 of the pipe connecting device 10 may be provided.

11 is a view for explaining the operation of the tightening device shown in FIG. In the figure, the connecting pipe 2 is coupled to the end where the flange 110 of the main pipe 1 is formed, for which a pipe connecting device 10 is employed. Also in the present embodiment, when the pipe connecting device 10 is fastened to the main pipe 1 as in the above-described embodiment, the connecting pipe is pressurized to prevent the connecting pipe 2 from being separated from the main pipe 1. The pressing member for employing is adopted. When the pipe connecting device 10 is fastened or released from the main pipe 1 in the present embodiment, the power transmission member 40 with respect to the support shaft 111 provided on the flange 110 of the main pipe 1. Is combined. And the pipe connection by rotating the power transmission member 40 in one side or the opposite direction by combining the power drive means or manual drive means operated by electric, pneumatic or hydraulic pressure to the coupling portion 42 of the power transmission member 40 The device 10 is fastened or released. Since this operation is substantially the same as the above-described embodiment, a detailed description thereof will be omitted.

Meanwhile, in the embodiment of FIGS. 4 to 11, a method of directly driving the pipe connecting device 10 by the power driving means without using the power transmission member 40 may also be preferably performed. FIG. 12 shows another example of the configuration of the impact wrench 80 as one of the power driving means for directly driving the pipe connecting device 10. In this example, the impact wrench 80 includes a drive shaft 130 that is detachably coupled to the main body 81, and a wrench coupling portion 131 is provided at an end of the drive shaft 130. Wrench coupling portion 131 is provided with a cylindrical body 132, the tooth 133 is installed on the outer peripheral surface of the body 132. Accordingly, the wrench coupling portion 131 has a shape of a gear. In addition, the diameter of the wrench coupling portion 131 is set to a size corresponding to the diameter of the power transmission member 40 in the above-described embodiment. And the support groove 134 is formed in the front center portion of the body 132. The support groove 134 is coupled to the

support shafts

52 and 111 of the

support members

50 and 110 so as to be removable.

FIG. 13 is an explanatory view showing an operation form for fastening and releasing the pipe connecting device 10 using the impact wrench 80 of FIG. 12. In the present embodiment, when fastening or releasing the pipe connecting device 10, the operator grasps the handle 85 of the impact wrench 80 and supports the support groove 134 of the wrench coupling part 131 in FIG. The impact wrench 80 is properly positioned such that the support shaft 52 of the member 50 or the support shaft 111 provided in the flange 110 of FIG. 10 is inserted. That is, in the above-described embodiment, the wrench coupling portion 131 of the impact wrench 80 is directly installed at the installation position of the power transmission member 40. When the impact wrench 80 is disposed on the

support shafts

52 and 111, the teeth 133 of the wrench coupling part 131 are mechanically aligned with the teeth 121 provided in the locking part 12 of the pipe connecting device 10. Combined. In this state, the operator presses the trigger 85 of the impact wrench 80 to rotate the drive shaft 130 in one direction or the opposite direction to fasten or release the pipe connecting device 10 with respect to the main pipe 1. .

Meanwhile. When a conventional pipe connecting device, for example, a pipe connecting device 3 having a polygonal locking part 32 as shown in FIG. 1 is applied, the tightening device according to the present invention cannot be employed. A gear cap is preferably provided for this purpose, the gear cap being coupled to the body of the pipe connecting device 3, more preferably to the outer circumferential surface of the locking part 32, so that the locking part 32 has a polygonal shape or other shape. The outer circumferential surface of the power transmission member 40 or to provide a gear shape for mechanical coupling with the power drive means 80.

14 is a perspective view illustrating an example of a gear cap. In the figure, the gear cap 140 is provided with a cylindrical body 141, the tooth 142 is formed on the outer peripheral surface of the body 141 as a whole. This tooth 142 is then mechanically coupled to the power transmission member 40. The through hole 143 is formed in the central portion of the body 141. The inner circumferential surface of the through hole 143 has a shape corresponding to the outer circumferential surface of the locking portion 32 of the pipe connecting device 3. In this example, the through hole 143 has a hexagonal shape. The pipe connecting device 3 is inserted into the through hole 143. And preferably, at least one fastening hole 144 is formed in the body 141 inward from the outer circumferential surface, and fastening means 145 such as a set screw is fastened thereto. The fastening means 145 is for stably fastening the locking portion 32 of the pipe connecting device 3 to the through hole 143.

15 is an exploded perspective view showing another configuration example of the gear cap. In the figure, the gear cap 150 includes first and

second cap members

151 and 152 having a semicircular shape. These first and

second cap members

151 and 152 are substantially the same as the shape which cut | disconnected the gear cap 140 of FIG. Each of the first and

second cap members

151 and 152 has a polygonal shape on the inner surface 150a, and teeth are formed on the outer surface 150b as a whole. In addition, the first and

second cap members

151 and 152 are provided with at least two fastening holes 153 at corresponding portions, and the fastening means 154 is fastened thereto. When the first and

second cap members

151 and 152 are fastened using the fastening means 154, the result is that the structure has substantially the same structure as the gear cap 140 shown in FIG. The gear cap 140 shown in FIG. 14 needs to separate the pipe connecting device 3 from the main pipe 1 in order to fasten it to the pipe connecting device 3. However, since the gear cap 150 of the present configuration is easily separated or coupled to the first and

second cap members

151 and 152, the gear cap 150 is connected to the main pipe 1 while the pipe connecting device 3 is coupled to the main pipe 1. It can be fastened to or detached from (1).

FIG. 16 is a perspective view showing still another configuration example of the gear cap, and FIG. 17 is a cross-sectional view of a state in which the pipe connecting device 3 is coupled thereto. In the figure, the gear cap 160 has a cylindrical body 161. A tooth 162 is formed on the outer circumferential surface of the body 161 as a whole. The central portion of the body 161 is provided with a polygonal seating groove 163 for seating the locking portion 32 of the pipe connecting device 3, the bottom of the seating groove 163 of the pipe connecting device (3) The through hole 164 for the body 31 is formed. When the operator fastens the pipe connecting device 3 to the main pipe 1, the gear cap 160 moves the body 31 of the pipe connecting device 3 into the through hole 164 of the gear cap 160. Since it is fastened in a pass state, the gear cap 160 is stably coupled between the pipe connecting device 3 and the main pipe 1. Therefore, the operator can fasten and release the pipe connecting device 160 to the main pipe 1 using the gear cap 160 more stably.

In the present invention, the structure or shape of the gear cap is not required to be specific. It is provided with a cylindrical body, the tooth is formed on the outer circumferential surface of the body for coupling the power transmission member 40 and the gear, the inner circumferential surface of the body while receiving the body 31 or the locking portion 32 of the pipe connecting device Any form having a structure that is mechanically coupled to them can be applied and implemented in the same manner.

The embodiment according to the present invention has been described above. However, the present invention can be carried out in various modifications within the scope without departing from the technical spirit. Those skilled in the art and those skilled in the art related to the technology of the present invention will readily understand that the present invention can be utilized in various ways by changing or modifying the configuration or shape of the present invention.

Claims

In the pipe connecting device for fastening the connection pipe to the main pipe to prevent the separation, and screwed with the main pipe,

The hollow body in the longitudinal direction,

A pressing member formed integrally with the body or configured to interlock with the body, for pressing the connecting pipe inserted through the hollow when the pipe connecting device is fastened to the main pipe;

It is configured to include a locking portion installed on the outer or outer peripheral surface of the body,

The locking portion is a pipe connecting device characterized in that it has a cylindrical body, and the teeth formed on the outer peripheral surface of the body as a whole.
The method of claim 1,

A flange is provided at the front end of the main pipe, and a support shaft for rotatably supporting a power transmission member or a power driving means mechanically coupled to the lock part is formed on an upper surface of the flange. .
Screwed to the main pipe, coupled to the main pipe to prevent separation, and to rotate the pipe connecting device having a lock on the outer or outer circumferential surface of the body for screwing with the main pipe in one or the opposite direction In the tightening device for driving,

A support member rotatably coupled to the main pipe and rotatably coupled to a power transmission member;

And a power transmission member supported by the support member, mechanically coupled to the lock portion, and having a coupling portion for mechanical coupling with the power drive means.
The method of claim 3,

The locking portion is provided with a gear cap on the outside, the power transmission member is a fastening device, characterized in that the gear is coupled to the lock.
The method of claim 3,

The locking portion is formed in a cylindrical shape and the teeth are formed on the outer peripheral surface as a whole,

The power transmission member has a cylindrical body, the outer peripheral surface of the power transmission member body of the tightening device, characterized in that the teeth for the coupling with the lock portion is formed as a whole.
The method of claim 5,

The support member is one or more support shafts are formed, the tightening device, characterized in that the coupling groove is coupled to the support shaft is formed on the bottom of the body of the power transmission member.
The method of claim 5,

The support member is provided with a through hole for coupling the power transmission member, the body of the power transmission member is provided with a coupling shaft inserted into the through hole, the coupling groove is formed at the end of the coupling shaft, the coupling groove Fastening device characterized in that the snap ring is fastened to prevent the power transmission member from being separated from the support member.
The method of claim 3,

Fastening device, characterized in that the coupling portion is provided with a coupling groove of a polygonal shape.
The method of claim 3,

Fastening device, characterized in that the coupling portion is composed of a polygonal columnar shape.
The method of claim 3,

And the power drive means is operated by electric, pneumatic or hydraulic pressure.
Screwed to the main pipe, coupled to the main pipe to prevent separation, and to rotate the pipe connecting device having a lock on the outer or outer circumferential surface of the body for screwing with the main pipe in one or the opposite direction In the tightening device for driving,

A support member coupled to the main pipe to be removable and having a support shaft formed thereon;

The support shaft includes a coupling groove that is detachably coupled to the support shaft, and includes a wrench coupling portion mechanically coupled to the lock portion, and rotates the wrench coupling portion in one direction or the opposite direction by electric, pneumatic or hydraulic pressure. Tightening device comprising a power drive means for driving.