JP6143220B2 - Auxiliary tool for pipe connection - Google Patents

Description

  The present invention relates to an auxiliary tool for pipe connection used when constructing a pipe line such as an installation pipe by using a housing type joint with end faces attached.

  When constructing a pipe line with a housing-type joint, a locking part such as a shallow recess or ridge around the pipe is formed near the edge of the metal pipe to be connected. The pipe is connected by engaging with the locking portion.

  The joint is generally composed of a ring-shaped seal (made of rubber), a split tightening ring positioned on the outer periphery of the seal, and a tightening bolt that acts to reduce the inner diameter of the tightening ring. The end faces of the adjacent pipes are aligned exactly, and a ring-shaped seal is fitted over both adjacent pipes, the metal ring is tightened by operating the tightening bolt, and the seal is strongly pressed with the tightening metal ring. The ring leg is engaged with the locking portion.

  If the end faces of the metal pipes are not completely matched when the pipes are connected, the seal and the tightening ring cannot be securely attached, resulting in a pipe accident (seam breakage and leakage) at a later date. However, it is very complicated to maintain the state in which the end faces of the metal pipes to be connected are accurately matched during the pipe connecting work, and this trouble reduces the work efficiency of pipe formation.

  As the countermeasure, the applicant firstly projects a mounting tongue piece having an outer peripheral surface coinciding with the inner peripheral surface of the same diameter pipe when connected to the end surface of the metal tube, and attempts to connect the metal tube. It has been proposed that one end port of the metal tube be placed on the placement tongue piece of the other metal tube to increase the work efficiency of joining the metal tubes (Patent Document 1).

Japanese Utility Model Publication No. 6-71991.

  When connecting the metal pipe (pipe constituting pipe) with the housing-type joint, if the mounting tongue piece protrudes from the end of the metal pipe as described above, the connection work can be performed efficiently and reliably. However, when the placement tongue piece is fixed, the placement tongue piece may become an obstacle depending on the bending direction if the object to be connected is a bent pipe such as an elbow pipe. In addition, since a general metal tube is not equipped with a mounting tongue piece, there is a work site in which a metal tube with a mounting tongue piece cannot be prepared.

  Therefore, the present invention proposes an auxiliary tool for connecting a pipe that assists the connecting operation of pipes that do not have a mounting tongue piece.

The auxiliary tool for pipe connection according to the present invention is provided with a mounting tongue piece portion of a predetermined size at the upper end in the shape of an umbrella, and provided with a main vertical rod with an operation guide portion below, and a foot plate portion at the lower end. wherein the operation vertical rod incorporating freely vertically sliding the operation guide portion, and an operation mechanism unit for forming a predetermined upward movement operation from below the moving operation and the remote location of the operating longitudinal rod, said operating mechanism Te tip Are connected to the main vertical shaft side so as to be pivotable up and down, and an intermediate portion close to the tip and the vicinity of the upper end of the operating vertical shaft are connected by a connecting rod, and the operating rod is connected to the operating rod. It is comprised with the cancellation | release operation member which makes the upward rotation operation of the operating rod from a remote location .

  Thus, by moving the operating vertical shaft downward to one end of the pipe (metal pipe) constituting the pipe line to be connected by the housing joint, the mounting tongue piece and the foot plate portion are connected to the inner circumference of the pipe constituting pipe. Attaching to the surface and mounting in the form of a snap bar, a part of the mounting tongue piece is protruded from the tube end during the mounting. Then, a predetermined portion (a member necessary for the upward movement operation of the operating vertical shaft) is passed through the other pipe connected to form the pipe.

  In this state, when the other tube is placed on the placement tongue piece, the ends of both tubes can be easily matched, so that in this state, the housing joint is attached and the two tubes are connected. When the pipe connection is made, if the operating mechanism is operated to move the operation shaft upward, the tool is taken out of the pipe through the other connected pipe and the next pipe connection work is performed. Is.

In particular, the operation mechanism portion is composed of an operation rod having a slide crank structure as described above and a release operation member that performs a downward rotation operation of the operation rod. Along with this, the operating vertical shaft moves up and down, and when the operating vertical rod is lowered to the position where the operating vertical shaft is lowered and attached in the end of one tube, the predetermined tube connection work is completed. By operating the operating member (pulling the operating string), the operating rod is rotated upward to release the snap-fixed state, and the auxiliary tool is pulled out from the other pipe end.

  The configuration of the present invention is as described above. When a pipe line is configured by attaching and connecting pipe ends, a mounting tongue piece can be easily attached to one of the pipes using the tool of the present invention. Even when a tube not provided with a tongue piece is used, the tube connection work can be easily performed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of an embodiment of the present invention. Explanatory drawing (perspective view) of the same use state. FIG. The pipe explanatory drawing (before fitting). The same figure (perspective view after fitting). Explanatory drawing of the example of the same.

  Next, an embodiment of the present invention will be described. The tool of the present invention shown in the embodiment is composed of a main chisel 1, an operation chisel 2, and an operation mechanism unit 3.

  The main vertical rod 1 is provided with a mounting tongue piece portion 11 of a predetermined size protruding from the pipe end of the pipe constituting pipe A at the upper end in the shape of an umbrella and restricts the operation of the operational vertical rod 2 downward. An operation guide portion 12 is provided.

  The operation spatula 2 is provided with a foot plate portion 21 at the lower end and is incorporated in the operation guide portion 12 so as to be slidable up and down.

  The operation mechanism unit 3 performs a downward movement operation of the operation vertical rod 2 and a predetermined upward movement operation from a remote location, and includes an operation rod 31, a connection rod 32, and an operation string (operation member) 33.

  The operation rod 31 is pivotally connected to the main vertical rod 1 side (near the upper end of the operation guide portion 12) so that the operation rod 31 can be pivoted up and down, and the connection rod 32 is connected to an intermediate portion near the front end of the operation rod 31 and the operation vertical shaft. 2 is connected to the vicinity of the upper end to form a slide crank structure as a whole. The operation string 33 has a predetermined length and is tied to the tail end of the operation rod 31.

  Thus, when the pipe is formed by connecting with the housing joint, the tool is used, and when the operation rod 31 is rotated downward at the connecting end of one pipe A constituting the pipe, The mounting tongue piece portion 11 and the foot plate portion 21 abut on the inner peripheral surface of the tube A as a whole, and the tool is mounted in a snap-fixed state.

  At the time of mounting, the operating rod 31 is set to the opening side of the tube, a part of the mounting tongue piece 11 is protruded from the tube end, and the operation string 33 is inserted into the other tube B to be connected. deep.

  Since the mounting tongue piece 11 protrudes from the tube A by the mounting of the tool, the placement tongue piece 11 can be easily abutted with the tube end of the other tube B when the mounting tongue piece 11 is used. (Figs. 3 and 4).

  When both ends of the pipes A and B are matched, the housing joint C is attached to connect both pipes A and B. Then, after the pipe connection is made, the operating string 33 is pulled from the opening side of the other pipe B, the operating rod 31 is rotated upward, the operating vertical rod 2 is moved upward, and the state of fixing the tool is released. The tool is taken out from the open end of the pipe B, the tool is fixed to the open end of the pipe B, and the next pipe connecting operation is performed.

  In the above embodiment, a slide crank structure is adopted for the vertical movement of the operation vertical shaft 2 and the vertical movement of the operation vertical shaft 2 is operated by the rotation of the operation rod 31. If the mechanism part 3 is a structure which can perform the predetermined | prescribed upward movement operation from the downward movement operation and the remote location of the operation vertical shaft 2, the specific structure is arbitrary. For example, as shown in FIG. 6, the operation mechanism unit 3a employs a configuration including a flexible wire 35 and a wire rotating unit 36 for driving the pinion so that the operation vertical shaft 2 moves up and down with a rack and pinion structure 34. Also good.

DESCRIPTION OF SYMBOLS 1 Main vertical rod 11 Placement tongue piece part 12 Operation guide part 2 Operation vertical rod 21 Foot board part 3, 3a Operation mechanism part 31 Operation rod 32 Connection rod 33 Operation string (operation member)
34 Rack and pinion structure 35 Flexible wire 36 Wire rotating part

Claims (2)

A mounting tongue piece of a predetermined size is provided in the upper end in the shape of an umbrella, and a main vertical rod provided with an operation guide below, and a foot plate portion provided at the lower end so that it can be slid up and down in the operation guide. And an operation mechanism part that performs a predetermined upward movement operation from a remote location, and the operation mechanism part can be pivoted up and down to the main vertical shaft side. An operation rod that is pivotally connected and a slide crank structure is formed by connecting an intermediate portion close to the tip and the vicinity of the upper end of the operating vertical shaft with a connecting rod, and an upward rotation operation of the operating rod from a remote location by connecting to the operating rod. An auxiliary tool for pipe connection characterized by comprising a release operation member .   The auxiliary tool for pipe connection according to claim 1, wherein an operation string connected to an operation tail end is used as a release operation member.

Images