KR102638546B1 - Device for connecting pipes - Google Patents

Abstract

A pipe connecting device according to the present invention includes a fixed base member connected to and fixed to a first pipe; a movable base member provided on one side of the fixed base member to slide along the inner surface of the first pipe; a first gripping member provided on one surface of the movable base member to surround the outer surface of the second pipe; a second gripping member, one end of which is rotatably connected to the first gripping member to surround an outer surface of the second pipe; and an elastic support unit that presses the second gripping member toward the second pipe so that the first gripping member and the second gripping member are maintained in close contact with the outer surface of the second pipe. .

Description

DEVICE FOR CONNECTING PIPES}

The present invention relates to a pipe connecting device, and more specifically, to a pipe connecting device that can easily connect general-purpose steel pipes or pipes and is easy to transport.

When constructing civil engineering and architectural structures such as buildings or bridges, steel materials are used to support formwork to form the main body of the structure, or to install safety nets to prevent foreign substances or work tools from falling during external work paths and work for external construction. Pipes must be installed at regular intervals in the vertical and horizontal directions.

In addition, there are many cases where general-purpose steel pipes or circular pipes must be connected to each other.

However, in order to firmly and reliably connect a steel pipe or pipe, the worker must use a separate tool to connect clamps, etc. to the pipe, and even when dismantling, a separate tool must be used to separate the clamp, etc. from the pipe, making connection and There is a problem with disassembly work being inconvenient.

Accordingly, there is a growing demand for a pipe connecting device that is easy and simple to connect and dismantle pipes and has good transportability.

The present applicant proposed the present invention to solve the above problems.

Korean Patent No. 10-1094493 (registered on December 8, 2011)

The present invention was devised to solve the above problems. Assembling and disassembling does not require the use of equipment such as clamps, ring-lock type hammers, or screw drills, and can be easily done by the worker by hand without any other auxiliary equipment. Provides a pipe connection device that can be assembled and disassembled at once.

The present invention provides a pipe connecting device that can connect steel pipes of various sizes and has excellent compatibility.

The present invention provides a pipe connecting device that can prevent movement of a steel pipe while it is connected, maintains the connection stably only by the elastic force of a spring, and has a simple structure.

A pipe connecting device according to the present invention for achieving the above-mentioned problems includes a fixed base member connected to and fixed to a first pipe; a movable base member provided on one side of the fixed base member to slide along the inner surface of the first pipe; a first gripping member provided on one surface of the movable base member to surround the outer surface of the second pipe; a second gripping member, one end of which is rotatably connected to the first gripping member to surround an outer surface of the second pipe; and an elastic support unit that presses the second gripping member toward the second pipe so that the first gripping member and the second gripping member are maintained in close contact with the outer surface of the second pipe. .

The fixed base member may be welded or joined to the inner surface of the first pipe.

The first gripping member is formed with a rotation axis to which one end of the second gripping member is rotatably connected, one end of the first gripping member is connected to the movable base member, and the other end is connected to the outer surface of the second pipe. It is formed to surround the first gripping member, and the angle between the center of the second pipe and the imaginary line connecting the rotation axis and the other end of the first gripping member may be formed such that the angle formed by the center of the second pipe exceeds 180 degrees. there is.

One end of the second gripping member is rotatably connected to the rotating shaft and the other end is formed to surround the outer surface of the second pipe, and the first gripping member is relative to a horizontal line passing through the center of the second pipe. The other end of the second gripping member may be positioned above the horizontal line, and the other end of the second gripping member may be positioned below the horizontal line.

The elastic support part includes a rotating elastic support member that presses the lower surface of the second gripping member so that the inner surface of the second gripping member is in close contact with the outer surface of the second pipe, and one end of the rotating elastic support member is The lower surface of the second gripping member is supported at a point close to the other end of the second gripping member, the other end is contacted and supported by a support bar formed on the first gripping member, and the middle portion is formed to allow the rotation shaft to be inserted. You can.

The elastic support part includes: a first coil spring provided between the second gripping member and the movable base member to press the second gripping member toward the second pipe; a guide member inserted into the first coil spring and passing through the movable base member and the fixed base member; and a second coil spring inserted into the guide member and provided between the fixed base member and the lower end of the guide member.

The upper end of the first coil spring is connected and fixed to the lower surface of the second gripping member, and the lower end is connected and fixed to the upper surface of the movable base member, and the upper end of the guide member passes through the center of the movable base member and is fixed to the lower surface of the second gripping member. 1 Located inside the coil spring but not in contact with the second gripping member, the guide member may be formed to be fixedly coupled to the movable base member.

The guide member is provided to pass through the center of the fixed base member so that the fixed base member moves up and down along the guide member, and the upper end of the second coil spring is fixedly connected to the lower surface of the fixed base member and the second coil spring is fixed to the lower surface of the fixed base member. 2 The lower end of the coil spring may be fixedly connected to the lower end of the guide member.

The first coil spring may be provided as a compression coil spring, and the second coil spring may be provided as a tension coil spring.

The first gripping member may be provided with a fixing pin inserted into the second pipe.

The pipe connecting device according to an embodiment of the present invention has excellent workability because a worker can easily assemble and disassemble it by hand without any separate tools or equipment.

The pipe connecting device according to an embodiment of the present invention has excellent compatibility because it can connect steel pipes of various sizes with one device.

The pipe connecting device according to an embodiment of the present invention has a simple structure and good maintenance convenience because it can stably maintain the connection state of steel pipes by using several springs.

Figure 1 is a partially cut-away perspective view showing a pipe connection device installed on a pipe according to an embodiment of the present invention.
Figure 2 is a side view of the pipe connecting device shown in Figure 1.
Figure 3 is a front perspective view of the pipe connecting device shown in Figure 1.
Figure 4 is a rear perspective view of the pipe connecting device shown in Figure 1.
Figure 5 is a partially cut away side view showing a pipe connection device according to another embodiment of the present invention.
Figure 6 is a front view of the pipe connecting device shown in Figure 5.
FIGS. 7 and 8 are diagrams for explaining the operating process of the pipe connecting device shown in FIG. 5.

Hereinafter, embodiments disclosed in the present specification will be described in detail with reference to the attached drawings, but identical or similar components will be assigned the same or similar reference numerals and duplicate descriptions thereof will be omitted. The suffix "part" for the components used in the following description is given or used interchangeably only considering the ease of preparing the specification, and does not have a distinct meaning or role in itself. Additionally, in describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions will be omitted. In addition, the attached drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the attached drawings, and all changes included in the spirit and technical scope of the present invention are not limited. , should be understood to include equivalents or substitutes.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is referred to as being “connected” to another component, it should be understood that it may be directly connected to the other component, but that other components may also exist in between.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Please note that the drawings are schematic and not drawn to scale. The relative dimensions and proportions of parts in the drawings are shown exaggerated or reduced in size for clarity and convenience in the drawings, and any dimensions are illustrative only and are not limiting. And for identical structures, elements, or parts that appear in two or more drawings, the same reference numerals are used to indicate similar features.

Embodiments of the present invention specifically represent ideal embodiments of the present invention. As a result, various variations of the drawing are expected. Accordingly, the embodiment is not limited to the specific shape of the illustrated area and also includes changes in shape due to manufacturing, for example.

Hereinafter, the pipe connection device 100 according to the present invention will be described with reference to the drawings.

Figure 1 is a partially cut-away perspective view showing a pipe connection device installed on a pipe according to an embodiment of the present invention, Figure 2 is a side view of the pipe connection device shown in Figure 1, and Figure 3 is a pipe connection shown in Figure 1. FIG. 4 is a rear perspective view of the pipe connecting device shown in FIG. 1, FIG. 5 is a partially cut-away side view showing a pipe connecting device according to another embodiment of the present invention, and FIG. 6 is a rear perspective view of the pipe connecting device shown in FIG. 5. The front view of the pipe connection device and FIGS. 7 and 8 are diagrams for explaining the operating process of the pipe connection device shown in FIG. 5.

Referring to Figures 1 to 3, the pipe connecting device 100 according to an embodiment of the present invention is a device for connecting general-purpose steel pipes 20 and 30.

The pipe connecting device 100 according to an embodiment of the present invention can connect two pipes 20 and 30 that intersect each other.

The pipe connecting device 100 according to an embodiment of the present invention includes a fixed base member 140 connected to and fixed to the first pipe 30; A movable base member 130 provided on one side of the fixed base member 140 to slide along the inner surface of the first pipe 30; a first gripping member 110 provided on one surface of the movable base member 130 to surround the outer surface of the second pipe 20; a second gripping member 120, one end of which is rotatably connected to the first gripping member 110 to surround the outer surface of the second pipe 20; and the second gripping member 120 is maintained in close contact with the outer surface of the second pipe 20. It may include elastic supports (170,180) that press toward the pipe (20).

In order to explain the connection structure between the fixed base member 140 and the first pipe 30 of the pipe connecting device 100 according to an embodiment of the present invention, Figures 1 to 3 show a portion of the upper end of the first pipe 30. The cut state is shown.

The fixed base member 140 and the movable base member 130 may be located inside the upper end of the first pipe 30. Here, the fixed base member 140 may be welded or joined to the inner surface of the first pipe 30. That is, the fixed base member 140 is welded and fixed to the upper inner surface of the first pipe 30. Accordingly, the fixed base member 140 cannot slide or move along the inner surface of the first pipe 30.

On the other hand, the movable base member 130 is not fixed to the inner surface of the first pipe 30, and may be provided in a state in which it can move relative to the fixed base member 140.

The movable base member 130 is provided above the fixed base member 140 and can slide along the inner surface of the first pipe 30 depending on the operating state of the second gripping member 120.

As can be seen from the fact that the fixed base member 140 of the pipe connecting device 100 is fixed to the first pipe 30, the pipe connecting device 100 according to an embodiment of the present invention is used to connect two pipes to each other. It has the characteristic of being fixed to one thing. However, the fixed base member 140 does not have to be connected and fixed to the first pipe 30 in advance by welding, etc., and at the site where the pipes 20 and 30 must be connected or assembled, the fixed base member 140 and the first pipe 30 must be connected and fixed to the first pipe 30 in advance. The pipe 30 can also be connected and fixed. At this time, the fixed base member 140 may be connected and fixed to the first pipe 30 using other methods other than welding.

Since the pipe connecting device 100 according to an embodiment of the present invention is connected and fixed to one pipe by welding, etc., only the remaining pipe needs to be stably and firmly connected.

The second pipe 20 arranged to intersect the first pipe 30 may be connected to the first gripping member 110 and the second gripping member 120.

As shown in FIGS. 1 to 3 , the first gripping element 110 is formed in a hook shape or a question mark shape, and may be formed integrally with the movable base member 130 . The second gripping member 120 is a curved member rotatably connected to the first gripping member 110. In the pipe connecting device 100 according to an embodiment of the present invention, the first gripping member 110 and the second gripping member 120 may be provided to tightly grip the outer surface of the second pipe 20.

The first gripping member 110 is formed with a rotation axis 119 to which one end of the second gripping member 120 is rotatably connected, and one end of the first gripping member 110 is connected to the movable base member 130. ) and the other end of the first gripping member 110 may be formed to surround the outer surface of the second pipe 20.

Referring to FIG. 2, the first gripping member 110 is a gripper 111 that surrounds and presses the outer surface of the second pipe 20, and the lower end of the gripper 111 is connected to the movable base member 130. (113), may include the upper other end 112 of the gripper 111 facing the lower end. The gripper 111, the lower end 113, and the upper other end 112 may be formed integrally with the movable base member 130.

The gripper 111 of the first gripping member 110 may be provided in a shape with a constant width along the radial direction of the second pipe 20. Here, the portion having a certain width is preferably from the other upper side 112 of the gripper 111 to the portion where the rotation axis 119 is located.

The lower end 113 of the gripper 111 connected to the movable base member 130 is preferably formed to have a larger width than the gripper 111. This is because the gripper 111 and the movable base member 130 must be stably connected and the connection between the gripper 111 and the movable base member 130 must not be broken due to the load applied to the second pipe 20. Because.

Referring to FIG. 2, the inner surface 111a of the gripper 111 in contact with the outer surface of the second pipe 20 has the same curvature as the outer surface of the second pipe 20 so as to be in close contact with the outer surface of the second pipe 20. can be formed. The contact area between the inner surface 111a of the gripper 111 and the outer surface of the second pipe 20 must be secured as much as possible to increase the bonding force between the second pipe 20 and the gripper 111.

In addition, although not shown, a plurality of protrusions (not shown) are formed on the inner surface 111a of the gripper 111 so that the protrusions are stamped on the outer surface of the second pipe 20, so that the second pipe 20 and the gripper By increasing the binding force of (111) and increasing the friction force, it is possible to prevent the second pipe 20 from spinning while in contact with the gripper 111.

Additionally, a separate member capable of increasing friction may be attached to the inner surface 111a of the gripper 111. For example, a rubber pad (not shown) is installed between the inner surface 111a of the gripper 111 and the second pipe 20 to increase the friction between the gripper 111 and the second pipe 20 and to increase the coupling force. It can be secured.

As can be seen in FIG. 2, among the first gripping member 110 and the second gripping member 120, the first gripping member 110 is the member that primarily functions in binding to the second pipe 20. The second gripping member 120 is a member that secures space for assembling and disassembling the second pipe 20 and at the same time assists the binding force of the first gripping member 110.

The first gripping member 110 is preferably provided to surround more than 1/2 of the outer surface of the second pipe 20. That is, the first gripping member 110 is formed with a rotation axis 119 to which one end of the second gripping member 120 is rotatably connected, and one end of the first gripping member 110 is a movable base member ( 130) and the other end of the first gripping member 110 is formed to surround the outer surface of the second pipe 20, and the first gripping member 110 is connected to the center of the second pipe 20 and the rotation axis ( 119) and the virtual line connecting the center of the second pipe 20 and the other end 112 of the first gripping member 110 may be formed so that the angle between them exceeds 180 degrees. .

If the first gripping member 110 or gripper 111 cannot cover more than half of the outer surface of the second pipe 20, the second pipe 20 is bound to the pipe connection device 100. It won't happen. In addition, when the gripper 111 surrounds the outer surface of the second pipe 20 too much, the second pipe 20 is bound to or dismantled from the first gripping member 110 and the second gripping member 120. It can be difficult.

Referring to FIG. 2, one end 123 of the second gripping member 120 is rotatably connected to the rotation shaft 119, and the other end 121 of the second gripping member 120 is connected to the second pipe 20. It can be formed to surround the outer surface of. Additionally, the body portion 121 between one end 123 and the other end 121 may be provided in a form that contacts the outer surface of the second pipe 20.

Here, based on the horizontal line passing through the center of the second pipe 20, the other end 112 of the first gripping member 110 is located above the horizontal line, and the other end 122 of the second gripping member 120 may be formed to be located below the horizontal line. Because it is provided in this form, the first gripping member 110 wraps around the second pipe 20 from the top, while the second gripping member 120 wraps from the bottom of the second pipe 20. It can be provided.

The width of the second pipe 20 in the radial direction of the gripper 111 of the first gripping member 110 is much larger than that of the body portion 121 of the second gripping member 120. This is because the gripper 111 plays a greater role in tightly gripping the outer surface of the second pipe 20 than the body portion 121.

The body portion 121 of the second gripping member 120 is formed to have a width or thickness smaller than the width of the gripper 111, and the second gripping member 120 assists the first gripping member 110. Thus, it can function as a gate not only for binding the second pipe 20 but also for binding or dismantling the second pipe 20 from the first gripping member 110. Therefore, the second gripping member 120 has the other end 122 moving in an arc direction around one end 123 connected to the rotation axis 119 to perform a gate open and gate close function. do.

Referring to FIG. 2, if the space between the other end 112 of the first gripping member 110 and the other end 122 of the second gripping member 120 is called a gate, the second pipe 20 is opened in this space. The operation of pulling the other end of the second gripping member 120 downward so that the second pipe 20 can enter is called a gate opening operation, and the second pipe 20 passes through the gate and contacts the first gripping member 110. A state in which the second gripping member 120 also comes into contact with the second pipe 20 may be referred to as a gate closing operation.

Meanwhile, if the body portion 121 of the second gripping member 120 is not closed while the second pipe 20 is bound to the first gripping member 110, the second pipe 20 is connected to the first gripping member 110. You can escape from ignorance (110). To prevent the second pipe 20 from being separated from the first gripping member 110, the body portion 121 of the second gripping member 120 must always be provided to face the second pipe 20. That is, when the other end 122 of the second gripping member 120 is pulled downward and released to open the gate, the body portion 122 of the second gripping member 120 is aligned with the outer surface of the second pipe 20. It must be in a contact state, that is, the state shown in FIG. 2. For this purpose, the body portion 121 of the second gripping member 120 must be pushed toward the second pipe 20 at all times.

The pipe connecting device 100 according to an embodiment of the present invention may press the second gripping member 120 toward the second pipe 20 using the elastic supports 170 and 180.

Referring to Figures 1 to 3, the elastic support part is a rotational elastic support that presses the lower surface of the second gripping member 120 so that the inner surface of the second gripping member 120 is in close contact with the outer surface of the second pipe 20. It may include a member 180.

One end 183 of the rotational elastic support member 180 supports the lower surface of the second gripping member 120 to the body portion 121 at a point close to the other end 122 of the second gripping member 120, The other end 181 is contacted and supported by a support bar 189 (see FIG. 5) formed on the first gripping member 110, and the middle portion 182 may be formed so that the rotation axis 119 is inserted.

The middle portion 182 of the rotating elastic support member 180 is a wound portion and has a shape similar to a coil spring. By inserting the rotating shaft 119 into the winding-shaped central portion 182, the rotating elastic support member 180 can be installed between the first gripping member 110 and the second gripping member 120.

The rotational elastic support member 180 is provided in the form of a torsion coil spring and can press the second gripping member 120 toward the second pipe 20.

In order to position the second pipe 20 between the first gripping member 110 and the second gripping member 120 in the state shown in FIG. 3, the end 122 of the second gripping member 120 is used. The gate must be opened by pulling downwards. When the second gripping member 120 is pulled downward, it receives a resistance force, that is, an elastic restoring force, of the elastic rotation support member 180, and the elastic restoring force acts toward the outer surface of the second pipe 20. Therefore, when the second gripping member 120 is pulled, the second gripping member 120 is attached to the outer surface of the second pipe 20 due to the elastic restoring force of the rotating elastic support member 180, and in this state Since the elastic restoring force of the rotating elastic support member 180 continues to act, the second gripping member 120 presses the outer surface of the second pipe 20.

Meanwhile, referring to FIG. 4, the pipe connecting device 100 according to an embodiment of the present invention includes a first gripping member ( 110) may be provided with a fixing pin 160 inserted into the second pipe.

As shown in FIGS. 1 and 4 , the first gripping member 110 may include two grippers 111 spaced apart at a regular interval along the longitudinal direction of the second pipe 20 . The gap between the two grippers 111 can be maintained by the lower support bar 189 and the upper connecting bar 118. That is, the connection bar 118 and the support bar 189 can be connected and fixed to the two grippers 111.

A fixing pin 160 may be provided between the two grippers 111. The fixing pin 160 is preferably formed at a contact portion of the outer surface of the second pipe 20 that is in contact with the upper vertical line. The fixing pin 160 extends downward from the head 161 mounted between the two grippers 111 and the lower surface of the head 161, and is inserted into a groove (not shown) formed on the outer surface of the second pipe 20. It may include an insertion portion 163 that is inserted. In this way, since the insertion portion 163 of the fixing pin 160 is inserted into the groove of the second pipe 20, the second pipe 20 is bound to the first and second gripping members 110 and 120. It is possible to prevent the second pipe 20 from rotating in the circumferential direction or moving in the longitudinal direction.

Meanwhile, the pipe connecting device 100 according to an embodiment of the present invention may change the gap (distance) between the grippers 111 of the first gripping member 110. For example, the distance between the grippers 111 may be increased by forming the connection bar 118 and the support bar 189 to be long. The spacing between the grippers 111 may be selected depending on the diameter of the second pipe 20. For example, when the diameter of the second pipe 20 is large, the gap between the grippers 111 can be increased to form several points where the gripper 111 grabs the second pipe 20, and as a result, The binding force to the second pipe 20 can be increased.

5 to 8 show a pipe connecting device according to another embodiment of the present invention. Compared to the pipe connecting device shown in Figures 1 to 4, only the elastic support part is different and the remaining parts are the same. Hereinafter, a pipe connecting device according to another embodiment of the present invention will be described focusing on the elastic support part.

In the case of the pipe connecting device 100 according to another embodiment of the present invention, the elastic support portion may be configured to include three springs.

Referring to FIGS. 5 and 6, the elastic support portion of the pipe connecting device 100 according to another embodiment of the present invention is provided between the second gripping member 120 and the movable base member 130 to provide the second gripping member 120 and the movable base member 130. a first coil spring 190 that presses the ripping member 120 toward the second pipe 20; A guide member 151 that is inserted into the first coil spring 190 and passes through the movable base member 130 and the fixed base member 140; and a second coil spring 170 that is inserted into the guide member 151 and is provided between the fixed base member 140 and the lower end of the guide member 151.

The elastic support portion of the pipe connecting device 100 according to another embodiment of the present invention is different in that it further includes a first coil spring 190 and a second coil spring 170 in addition to the rotating elastic support member 180. There is. Since the second gripping member 120 is pressed toward the second pipe 20 by an elastic support unit including three springs 170, 180, and 180, the first and second gripping members 110, 120 are stably held with greater force. The second pipe 20 can be bound.

According to the gate open/close operation of the second gripping member 120, the first coil spring 190, the movable base member 130, and the guide are connected to the fixed base member 140 fixed to the first pipe 30. The member 151 and the second coil spring 170 can move in the up and down directions.

The upper end of the first coil spring 190 may be connected and fixed to the lower surface of the second gripping member 120, and the lower end of the first coil spring 190 may be connected and fixed to the upper surface of the movable base member 130. When the second gripping member 120 moves downward (refer to the direction of arrow A1 in FIG. 7) for the gate opening operation, the first coil spring 190 is compressed. In this state, if the gate opening operation of the second gripping member 120 continues, the movable base member 130 moves downward (see arrow A3 in FIG. 7). At this time, the movable base member 130 moves downward along the inner surface of the first pipe 30, and can move until the movable base member 130 contacts the fixed base member 140.

Meanwhile, the guide member 151 is a member that guides the first coil spring 190 and the second coil spring 170 so that they are compressed, stretched, or restored to their original state smoothly. The guide member 151 is disposed long in the longitudinal direction at the center of the first pipe 30 and may be provided in a form that passes through the centers of the movable base member 130 and the fixed base member 140.

The guide member 151 is connected and fixed to the movable base member 130, but is not connected to or fixed to the fixed base member 140. Accordingly, the guide member 151 can move relative to the fixed base member 140. That is, while the fixed base member 140 is fixed to the inner surface of the first pipe 30, the guide member 151 can move up and down with respect to the fixed base member 140.

The upper end of the guide member 151 passes through the center of the movable base member 130 and is located inside the first coil spring 190, but is positioned so as not to contact the second gripping member 120, and the guide member 151 ) may be formed to be fixedly coupled to the movable base member 130.

When the upper end of the guide member 151 passes through the first coil spring 190 and comes into contact with the lower surface of the second gripping member 120, the upper end of the guide member 151 passes through the first coil spring 190 and comes into contact with the lower surface of the second gripping member 120. 1 Coil spring 190 is not compressed. If the first coil spring 190 is not compressed, the first coil spring 190 cannot press the second gripping member 120 toward the second pipe 20. Therefore, it is preferable that the upper end of the guide member 151 passes through the inside of the first coil spring 190 and is located at a midpoint between the second gripping member 120 and the movable base member 130.

Since the guide member 151 is located inside the first coil spring 190, the first coil spring 190 is accurately compressed along the guide member 151 during the gate opening operation of the second gripping member 120. It can be. That is, the winding portions of the spring along the guide member 151 can be compressed into direct contact with each other.

The guide member 151 may be provided to pass through the center of the fixed base member 140 so that the fixed base member 140 moves up and down along the guide member 151. As described above, while the fixed base member 140 is fixed to the inner surface of the first pipe 30, the guide member 151 can move up and down with respect to the fixed base member 140.

The upper end of the second coil spring 170 may be fixedly connected to the lower surface of the fixed base member 140, and the lower end of the second coil spring 170 may be fixedly connected to the lower end of the guide member 151.

Since the upper and lower ends of the second coil spring 170 are fixed to the fixed base member 140 and the guide member 151, respectively, when the gate opening operation of the second gripping member 120 is performed, the guide member 151 and When the movable base member 130 fixedly coupled thereto descends and the movable base member 130 comes into contact with the fixed base member 140, the length of the guide member 151 located below the fixed base member 140 becomes longer, and the second coil spring 170 is stretched accordingly.

Comparing with FIG. 7, it can be seen that in the case of FIG. 8, the guide member 151 is lowered and the second coil spring 170 is tensioned.

In the state of FIG. 8, when the force acting for the gate opening operation of the second gripping member 120 is removed (for example, the worker pulls the other end 122 of the second gripping member 120 downward), (when released), the second gripping member 120 moves upward (see arrow A2) and the guide member 151 and the movable base member 130 also move upward (see arrow A4).

The first coil spring 190 may be provided as a compression coil spring, and the second coil spring 170 may be provided as a tension coil spring. That is, the first coil spring 190 generates elastic restoring force when compressed, and the second coil spring 170 generates elastic restoring force when tensioned (stretched).

When the other end 122 of the second gripping member 120 moves downward with respect to the rotation axis 119, the first coil spring 190 is compressed by the lower surface of the second gripping member 120 and the movable base member 130 ) moves downward and the movable base member 130 moves downward, the guide member 151 passes through the fixed base member 140 and descends, thereby increasing the second coil spring 170.

Compared to FIG. 7, in the case of FIG. 8, the first coil spring 190 is compressed and the second coil spring 170 is in a tensioned state, so a strong elastic restoring force is generated in the two coil springs. Due to this elastic restoring force, the second gripping member 120 can strongly press the outer surface of the second pipe 20.

As described above, the pipe connecting device 100 according to the present invention can strengthen and maintain the binding force between the first and second gripping members 110 and 120 and the second pipe 20 only by the elastic restoring force of the springs 170, 180 and 190. there is. In addition, when separating the second pipe 20, simply pull the second gripping member 120 downward to open the gate, so pipe connection and disassembly work is simple and the worker can do it by hand without using other tools. You can easily connect and dismantle pipes.

As described above, an embodiment of the present invention has been described with specific details such as specific components, limited embodiments, and drawings, but this is only provided to facilitate a more general understanding of the present invention, and the present invention is not limited to the above embodiment. It is not limited, and various modifications and variations can be made from these descriptions by those skilled in the art. Accordingly, the spirit of the present invention should not be limited to the described embodiments, and all claims that are equivalent or equivalent to the claims as well as the following claims fall within the scope of the present invention.

20: second pipe 30: first pipe
100: pipe connection device 110: first gripping member
120: second gripping member 130: movable base member
140: fixed base member 160: fixed pin
170: second coil spring 180: rotational elastic support member
190: first coil spring

Claims (10)

A fixed base member connected to and fixed to the first pipe;
a movable base member provided on one side of the fixed base member to slide along the inner surface of the first pipe;
a first gripping member provided on one surface of the movable base member to surround the outer surface of the second pipe;
a second gripping member, one end of which is rotatably connected to the first gripping member to surround an outer surface of the second pipe; and
It includes an elastic support part that presses the second gripping member toward the second pipe so that the first gripping member and the second gripping member are maintained in close contact with the outer surface of the second pipe,
The elastic support part,
a first coil spring provided between the second gripping member and the movable base member to press the second gripping member toward the second pipe; a guide member inserted into the first coil spring and passing through the movable base member and the fixed base member; and a second coil spring inserted into the guide member and provided between the fixed base member and the lower end of the guide member.
According to paragraph 1,
A pipe connection device, characterized in that the fixed base member is welded or joined to the inner surface of the first pipe.
According to paragraph 1,
The first gripping member is formed with a rotation axis to which one end of the second gripping member is rotatably connected, one end of the first gripping member is connected to the movable base member, and the other end is connected to the outer surface of the second pipe. It is formed to surround the
The first gripping member is a pipe connecting device characterized in that the angle formed between the center of the second pipe, the rotation axis, and an imaginary line connecting the other end of the first gripping member, respectively, is formed to exceed 180 degrees. .
According to paragraph 3,
One end of the second gripping member is rotatably connected to the rotation shaft and the other end is formed to surround the outer surface of the second pipe,
With respect to a horizontal line passing through the center of the second pipe, the other end of the first gripping member is positioned above the horizontal line, and the other end of the second gripping member is positioned below the horizontal line. Pipe connection device.
According to clause 4,
The elastic support part includes a rotating elastic support member that presses the lower surface of the second gripping member so that the inner surface of the second gripping member is in close contact with the outer surface of the second pipe,
One end of the rotating elastic support member supports the lower surface of the second gripping member at a point close to the other end of the second gripping member, the other end is contacted and supported by a support bar formed on the first gripping member, and the central end is supported by a support bar formed on the first gripping member. A pipe connection device, characterized in that the portion is formed into which the rotation shaft is inserted.
delete According to paragraph 1,
The upper end of the first coil spring is connected and fixed to the lower surface of the second gripping member, and the lower end is connected and fixed to the upper surface of the movable base member,
The upper end of the guide member passes through the center of the movable base member and is located inside the first coil spring, but is positioned so as not to contact the second gripping member,
A pipe connection device, characterized in that the guide member is fixedly coupled to the movable base member.
In clause 7,
The guide member is provided to pass through the center of the fixed base member so that the fixed base member moves up and down along the guide member,
A pipe connection device, characterized in that the upper end of the second coil spring is fixedly connected to the lower surface of the fixed base member, and the lower end of the second coil spring is fixedly connected to the lower end of the guide member.
According to clause 8,
A pipe connecting device, wherein the first coil spring is provided as a compression coil spring, and the second coil spring is provided as a tension coil spring.
According to clause 9,
A pipe connecting device, characterized in that the first gripping member is provided with a fixing pin inserted into the second pipe.

Images