JP6113054B2 - Anti-rotation tool - Google Patents

Description

  The present invention is directed to a cylindrical member screwed to a pipe and a screwing member screwed concentrically with the cylindrical member, and the above-described method is performed when the screwing member is attached to or detached from the cylindrical member. The present invention relates to a follow-up preventing tool for preventing a turn of a cylindrical member.

  As such a follow-up prevention tool, for example, in a water pipe of a gas pipe located in a narrow protector provided in the ground, a socket (an example of a cylindrical member) screwed to the water pipe and a socket A cylindrical frame that is concentrically screwed with respect to a plug (an example of a screwing member) and has an inner diameter larger than the outer diameter of the socket and can surround the socket, and an equal angle with respect to the cylindrical frame A base bolt that includes three sets of screw mechanisms that are inserted apart from each other, the screw mechanism being inserted into the cylinder frame so as to be relatively movable, and a tip portion of which is in contact with the outer peripheral surface of the socket; And a reverse bolt and a tip bolt whose tip is in contact with the inner peripheral surface of the protector, and a turnbuckle screwed over the base bolt and the tip bolt are known (for example, patents) Reference 1)

JP 2003-278985 A

However, in the follow-up prevention tool described in the above-mentioned patent document, in use, the tip end portions of the base end bolts constituting the three sets of screw mechanisms are brought into contact with the outer peripheral surface of the socket, and the tip end portions of the tip end bolts are placed in the protector. There is a problem in that work to contact the peripheral surface is necessary, and after use, it is necessary to remove by reverse work, and workability is poor at the time of use.
In addition, the socket is prevented from being rotated only by the frictional force due to the contact of each base bolt to the outer peripheral surface of the socket and the frictional force due to the contact of each front end bolt to the inner peripheral surface of the protector. When the plug is removed from the socket, if the plug is rusted against the socket, it is not possible to sufficiently resist the frictional force, and the socket is likely to rotate together.
In addition, it is essential that there is a protector inner peripheral surface for contacting the tip of each tip bolt to the outer periphery of the socket or other equivalents. For example, a large number of pipes are provided on the outer periphery of the socket. It was impossible to use in narrow spaces under existing circumstances, and there was room for improvement in this regard.

  The present invention pays attention to such a conventional problem, and its purpose can be used in a narrow place where a protector or the like does not exist on the outer peripheral portion of the cylindrical member, and the workability is good. An object of the present invention is to provide an anti-rotation tool capable of reliably preventing the rotation of a cylindrical member.

In order to achieve the above object, the present invention is directed to a cylindrical member screwed to a tube and a screwing member screwed concentrically to the cylindrical member, and the screw to the cylindrical member is targeted. A rotation prevention tool for preventing rotation of the tubular member when attaching and detaching the wearing member,
The characteristic configuration is such that an outer fitting member fitted on the outer periphery of the cylindrical member is fitted to a protrusion projecting radially outward from the outer peripheral surface of the cylindrical member on the inner peripheral surface thereof. And a pair of external fitting member pieces that can be opened and closed in the radial direction of the cylindrical member, and the pair of external fitting member pieces are connected and fixed in an externally fitted state to the cylindrical member. A gripping member that is connected to the outer fitting member and extends in the axial direction of the cylindrical member.

According to the above characteristic configuration, the outer fitting member that is fitted on the outer periphery of the cylindrical member screwed to the pipe is formed on the inner peripheral surface of the protrusion that protrudes radially outward from the outer peripheral surface of the cylindrical member. A pair of external fitting member pieces having a fitting portion to be fitted and freely openable and closable in the radial direction of the cylindrical member are connected to the pair of external fitting member pieces in an externally fitted state to the cylindrical member. Fixing means for fixing, so that the fitting portion of the inner peripheral surface of the pair of outer fitting member pieces is fitted to the protrusion projecting from the outer peripheral surface of the cylindrical member. An outer fitting member comprising a pair of outer fitting member pieces with respect to a cylindrical member, even in a narrow space, by a relatively simple operation of setting and fixing a pair of outer fitting member pieces by a fixing means. Can be externally fixed.
In particular, since the outer fitting member that is fitted onto the cylindrical member is constituted by a pair of outer fitting member pieces that can be opened and closed in the radial direction of the cylindrical member, the outer fitting member is screwed more than the cylindrical member to which the outer fitting member is to be fitted. A member having a larger diameter than the tubular member on the attachment member side, such as a member having a larger diameter than the tubular member such as a valve opening / closing knob or the like, or rotating to the tubular member Even when the operation tool is provided and the rotation operation tool protrudes outward in the radial direction, the pair of outer fitting member pieces constituting the outer fitting member are opened to form a cylindrical member. By externally fitting, the external fitting member can be securely fitted and fixed to a desired portion of the cylindrical member.
And since the grip member continuously provided on the outer fitting member extends in the axial direction of the cylindrical member, the grip member is arranged so as to extend toward the screwing member. With the hand (left hand) gripping the free end side of the gripping member and preventing the rotation of the tubular member, the other hand (right hand) operates the rotation operation tool to rotate the screwing member, The screwing member can be rotated by reliably preventing the cylindrical member from being rotated.
As a result, according to the accompanying rotation prevention tool of the present invention, it can be used even in a narrow place where there is no protector or the like on the outer peripheral portion of the cylindrical member. It can be surely prevented.

  According to a further characteristic configuration of the anti-rotation tool according to the present invention, the pair of external fitting member pieces are pivotally mounted by a pivot shaft along the axis of the cylindrical member so as to be opened and closed. In the direction view, the fixing means is provided on the opposite side of the pivot shaft in the radial direction around the axis of the cylindrical member.

  According to the above characteristic configuration, since the pair of external fitting member pieces are pivotally mounted by the pivot shaft along the axial center of the cylindrical member so as to be opened and closed, the cylinder of the external fitting member comprising the pair of external fitting member pieces. The outer fitting fixing operation and the detaching operation to the cylindrical member are further simplified, and the fixing means is a pivot shaft in the radial direction centering on the axial center of the cylindrical member in the axial direction of the cylindrical member. Therefore, the external fitting and fixing of the outer fitting member to the cylindrical member is strong, and the accompanying rotation of the cylindrical member can be more reliably prevented.

  According to a further feature of the anti-rotation tool according to the present invention, the fixing means includes a through hole provided in each of the pair of external fitting member pieces, and a pin member which can be inserted and removed over both the through holes. is there.

  According to the above characteristic configuration, the fixing means includes the through holes provided in the pair of external fitting member pieces, and the pin members that can be inserted and removed over both the through holes, so that the pin members are inserted into the through holes. With a simple operation by removal, it is possible to perform an external fitting fixing operation and a removal operation of the external fitting member with respect to the cylindrical member.

  According to a further feature of the anti-rotation tool according to the present invention, the pin member is a tapered pin member whose pin outer diameter is reduced in the axial direction.

  According to the above characteristic configuration, since the pin member inserted into and removed from both through holes is a tapered pin member whose pin outer diameter is reduced in the axial direction, when inserting the tapered pin member over both through holes, the pin member is sharp. Even if there is a dimensional error in the outer diameter of the cylindrical member and it does not fit snugly on the inner peripheral surface of the outer fitting member, the taper part Can be reliably fixed by contacting the inner surface of the through hole. Also, even if mud or rust adheres to the outer peripheral surface of the cylindrical member, it is possible to squeeze mud and rust by aligning the taper pin member and align the axes of both through holes. It is possible to securely fix the outer fitting member to the cylindrical member.

  A further characteristic configuration of the anti-rotation tool according to the present invention is such that a plurality of the protrusions are provided on the outer peripheral surface of the cylindrical member, and the fitting portion that can be fitted to the plurality of protrusions includes the outer fitting member. The number of the protrusions is more than the number of the protrusions on the inner peripheral surface.

  According to the above characteristic configuration, a plurality of protrusions protruding from the outer peripheral surface of the cylindrical member are provided, and a fitting portion that can be fitted to the plurality of protrusions is formed on the inner peripheral surface of the outer fitting member. Since it is provided more than the number, the outer fitting fixing position of the outer fitting member with respect to the cylindrical member, in other words, the position of the grip member can be selected, even if there is an obstacle on the outer peripheral portion of the cylindrical member, The grip member can be positioned at a desired location while avoiding the obstacle.

  According to still another aspect of the present invention, the gripping member includes a shaft member that extends in an axial direction of the cylindrical member, and a shaft member that is orthogonal to the shaft member from the free end side of the shaft member. It is in the point which consists of an extended grip part.

  According to the above characteristic configuration, the grip member includes a shaft member extending in the axial direction of the cylindrical member, and a grip portion extending perpendicularly to the shaft member from the free end side of the shaft member. By gripping the grip portion orthogonal to the shaft member, it becomes easy to apply force, and the accompanying rotation of the tubular member can be reliably prevented with a strong force.

  A further characteristic configuration of the anti-rotation tool according to the present invention is that the outer fitting member and the grip member are configured to be separable and connectable to each other.

  According to the characteristic configuration described above, the outer fitting member and the gripping member are separated from each other, so that it is easy to carry and store the anti-rotation tool.

Exploded perspective view of anti-rotation tool Exploded perspective view of essential parts of anti-rotation tool Front view of drain pipe and protector Front view showing how to use the anti-rotation tool Plan view showing how to use the anti-rotation tool Plan view showing how to use the anti-rotation tool

An embodiment of the anti-rotation tool according to the present invention will be described with reference to the drawings.
For example, as shown in FIG. 3, the anti-rotation tool according to the present invention is the extraction pipe 1 for extracting water accumulated in a gas pipe (not shown) embedded in the ground. The socket 2 as a cylindrical member screwed to 1 and the plug 3 as a screwing member screwed concentrically to the socket 2 are targeted. This is used to prevent the socket 2 from being rotated when the plug 3 is attached / detached by rotating the rotary operation portion 3a provided at the upper end of the plug 3.
That is, since the socket 2 and the plug 3 that are screwed to the upper end portion of the drainage pipe 1 are located in the narrow protector 4 provided in the ground, the lid 4a of the protector 4 is opened and the socket 2 is viewed from above. When the plug 3 is screwed or removed, it is impossible to prevent the socket 2 from being rotated with a normal wrench.

The anti-rotation tool 5 of the present invention can be easily used even in a narrow place where it is impossible or difficult to use a normal wrench. As shown in FIGS. The external fitting member 6 is provided with a pair of external fitting member pieces 7 and 8 made of, for example, hard duralumin.
Each of the outer fitting member pieces 7 and 8 is provided with stepped portions 7b and 8b on the base end side thereof, and the pivot shaft 9 along the axis L (see FIGS. 3 to 6) of the socket 2 is provided on both stepped portions 7b and 8b. The socket 2 is pivotally mounted so as to be openable and closable in the radial direction. Steps 7c and 8c are also provided on the distal end sides of the outer fitting member pieces 7 and 8, respectively, and the sockets 2 are viewed in the direction of the axis L in the outer fitting state of the stepped portions 7c and 8c, that is, the socket 2. , Through-holes 7a and 8a are formed on the opposite side of the pivot shaft 9 in the radial direction with the shaft center L as the center, and a square connecting hole 9a is concentric at the center of the pivot shaft 9. Is provided.

The through-holes 7a and 8a drilled in the outer fitting member pieces 7 and 8 cooperate with the pin member 10 so that the pair of outer fitting member pieces 7 and 8 are fitted to the socket 2 in a state of being fitted to the socket 2. A fixing means 11 for connecting and fixing the fitting member pieces 7 and 8 is configured. That is, as shown in FIGS. 5 and 6, the pair of external fitting member pieces 7 and 8 pivotally attached by the pivot shaft 9 are opened and externally fitted to the socket 2, and the pins are pinned across the through holes 7 a and 8 a. By inserting the member 10, the pair of external fitting member pieces 7 and 8 can be externally fitted and fixed to the socket 2, and the pin member 10 can be easily inserted into the through holes 7a and 8a. Therefore, it is formed in the tapered pin member 10 whose pin outer diameter is reduced in the axial direction.
And on the outer peripheral surface of the socket 2, two protrusions 2a as protrusions extending along the axis L at a position of 180 ° centering on the axis L are provided, and a pair of outer fitting member pieces 7, On the inner peripheral surface of 8, in other words, on the inner peripheral surface of the outer fitting member 6, four pairs (eight in total) of recessed portions 12 are provided as a pair of fitting portions that fit into the two protrusions 2 a. It has been.

The anti-rotation tool 5 further includes a grip member 13 made of a metal bar or pipe material, and the grip member 13 includes a shaft member 14 and a grip portion 15.
As shown in an enlarged view in FIG. 2, the shaft member 14 is fitted into a connecting hole 9 a provided in the pivot shaft 9 of the outer fitting member 6 and can be connected to the outer fitting member 6 as shown in an enlarged manner in FIG. A portion 16 is provided. The insertion part 16 protrudes from one surface of the insertion shaft part 16a and the insertion shaft part 16a having a substantially square cross section to be inserted into the square connection hole 9a in the axial direction of the shaft member 14, and contacts the inner surface of the connection hole 9a. It is comprised by the convex part 16b.
As shown in FIG. 1, the other end portion of the shaft member 14 is provided with a connecting portion 17 having a fitting hole 17 a having a square cross section for connecting the grip portion 15. The tapered pin member 10 is attached via a string-like body 10a such as a chain.

As shown in FIG. 1, an insertion portion 18 having a substantially square cross section that can be connected to the shaft member 14 by being inserted into an insertion hole 17 a provided in the connection portion 17 of the shaft member 14 is provided in the middle of the grip portion 15. By inserting the fitting portion 18 into the fitting hole 17a, the grip portion 15 extends from the free end portion of the shaft member 14 to the side of the shaft member 14 in the lateral direction. Connected to However, the grip portion 15 does not necessarily extend laterally from the free end portion of the shaft member 14, and may extend from the vicinity of the free end portion of the shaft member 14. What is necessary is just to extend from the free end part side.
In the middle of the grip portion 15, an additional connecting portion having an insertion hole 19 a in the positive cross section for connecting another shaft member (not shown) for addition in a state of being opposed to the inserting portion 18. 19 is provided, and is configured so that a shaft member for extension can be connected as necessary.

Next, a method of using the anti-rotation tool 5 will be described.
First, the grip member 13 is connected to the outer fitting member 6. That is, the fitting portion 16 of the shaft member 14 is fitted into the coupling hole 9 a of the pivot shaft 9 of the outer fitting member 6, the shaft member 14 is coupled to the outer fitting member 6, and the fitting hole of the coupling portion 17 of the shaft member 14 is inserted. The fitting part 18 of the grip part 15 is inserted into the grip 17 a and the grip part 15 is connected to the shaft member 14.
And, for example, as shown in FIG. 3, if the socket 3 and the plug 3 screwed to the water extraction pipe 1 of the gas pipe are targeted, and the plug 3 is removed in order to connect a water extraction pump outside the figure, As shown in FIGS. 4 to 6, the pair of outer fitting member pieces 7, 8 constituting the outer fitting member 6 are opened, fitted onto the socket 2, and fixed by the fixing means 11. However, the outer fitting member pieces 7 and 8 may be first fitted and fixed to the socket 2, and then the grip member 13 may be connected to the outer fitting member 6.

The external fitting and fixing of the external fitting member pieces 7 and 8 to the socket 2 is performed by either one of the four pairs of recessed portions 12 provided on the inner peripheral surface of the external fitting member pieces 7 and 8 being attached to the outer peripheral surface of the socket 2. It is set so as to be fitted to the two provided ridges 2a, and the tapered pin member 10 is inserted into and fixed to both the external fitting member pieces 7 and 8 through the through holes 7a and 8a.
When the outer fitting member pieces 7 and 8 are fitted and fixed to the socket 2, the shaft member 14 of the gripping member 13 extends upward along the axis L of the socket 2 as shown in FIG. Since the socket 2 can be prevented from being rotated if the portion 15 is gripped, for example, the rotary operation tool 20 having the outer fitting portion 20a that is fitted on the rotation operation portion 3a of the plug 3 at the tip is used, and the left hand is used. Even if the plug 3 is located in the narrow protector 4 by grasping the grip portion 15 and rotating the rotary operation tool 20 with the right hand, the socket 3 can be reliably prevented from being rotated and removed. Can do. Similarly, when the plug 3 is screwed, the plug 3 can be screwed while reliably preventing the socket 2 from being rotated by using the anti-rotation tool 5.

[Another embodiment]
(1) In the above embodiment, the outer fitting member 6 is constituted by a pair of outer fitting member pieces 7, 8, and the pair of outer fitting member pieces 7, 8 are pivotally attached by a pivot shaft 9 so as to be freely opened and closed. However, the pair of external fitting member pieces 7 and 8 are configured to be separable (openable and closable) from each other without pivoting, and the base end portion and the distal end portion of the pair of external fitting member pieces 7 and 8 are shown. A fixing means may be provided on the socket 2 so that the socket 2 can be externally fitted and fixed.
In addition, when the pair of external fitting member pieces 7 and 8 are pivotably mounted so as to be openable and closable as in the above embodiment, the fixing means 11 is not limited to the through holes 7a and 8a and the pin member 10; It is also possible to use a clamping device that clamps and fixes the outer fitting member pieces 7 and 8 as the fixing means 11.

(2) In the above embodiment, the socket 2 having the two protrusions 2a on the outer peripheral surface is the target, and the pair of recessed portions 12 that are fitted to the two protrusions 2a are used as the inner peripheral surface of the outer fitting member 6. An example in which four pairs are provided is shown. That is, although the example which provided the protrusion 2a which makes a pair of two on the outer peripheral surface of the socket 2 was shown, it is also possible to provide the protrusion 2a which makes a pair of three, The number of the recessed portions 12 provided on the inner peripheral surface is not necessarily limited to four pairs, and a pair or two or more pairs of recessed portions 12 that fit into the protrusions 2a on the socket 2 side can be provided.
Further, when the target socket 2 has only one protrusion 2a on the outer peripheral surface, it is possible to provide only one recessed portion 12 or a plurality of recessed portions 12.
In short, the number of the protrusions 2a provided on the outer peripheral surface of the socket 2 and the number of the recessed portions 12 provided on the inner peripheral surface of the outer fitting member 6 can be changed as appropriate, but a plurality of protrusions 2a are provided, It is convenient that the number of the recessed portions 12 that can be fitted to the protrusions 2 a is equal to or more than the number of the protrusions 2 a because the outer fitting position of the outer fitting member 6 with respect to the socket 2 can be selected.

(3) In the above embodiment, the grip member 13 is configured by the shaft member 14 and the grip portion 15. However, the grip portion 15 is not necessarily required, and the grip member 13 may be configured by only the shaft member 14. In addition, the gripping member 13 and the external fitting member 6 are not configured to be separable and connectable, and the gripping member 13 and the external fitting member 6 can be integrated.
Further, the anti-rotation device 5 according to the present invention is not limited to the socket (cylindrical member) 2 and the plug (screwing member) 3 screwed to the water extraction pipe 1 of the gas pipe, but a narrow space. The present invention can be used for any object including the cylindrical member 2 positioned inside and the screwing member 3 screwed concentrically with the cylindrical member 2.

DESCRIPTION OF SYMBOLS 1 Pipe | tube 2 Cylindrical member 2a Protrusion 3 Screwing member 5 Accompanying prevention tool 6 Outer fitting member 7, 8 Outer fitting member piece 7a, 8a Through-hole 9 Pivot shaft 10 Tapered pin member 11 Fixing means 12 Fitting part 13 Grip member 14 Shaft member 15 Grip portion L Center axis of cylindrical member

Claims (7)

A cylindrical member screwed to a tube and a screwing member screwed concentrically with the cylindrical member, and when the screwing member is attached to or detached from the cylindrical member, An anti-rotation tool that prevents anti-rotation,
An outer fitting member fitted on the outer periphery of the cylindrical member includes a fitting portion that fits a protrusion projecting radially outward from the outer peripheral surface of the cylindrical member on the inner peripheral surface thereof; and A pair of external fitting member pieces that can be opened and closed in the radial direction of the cylindrical member, and a fixing means that connects and fixes the pair of external fitting member pieces in an externally fitted state to the cylindrical member. A gripping prevention tool in which a gripping member connected to the outer fitting member is extended in the axial direction of the cylindrical member.   The pair of outer fitting member pieces are pivotally mounted by a pivot shaft along the axis of the cylindrical member so as to be openable and closable, and the axis of the cylindrical member is the center in the axial direction of the cylindrical member. The accompanying rotation prevention tool according to claim 1, wherein the fixing means is provided on the opposite side of the pivot shaft in the radial direction.   The follow-up prevention tool according to claim 2, wherein the fixing means includes a through hole provided in each of the pair of external fitting member pieces and a pin member that can be inserted and removed through both the through holes.   The accompanying rotation preventing tool according to claim 3, wherein the pin member is a tapered pin member whose pin outer diameter is reduced in the axial direction.   A plurality of the protrusions are provided on the outer peripheral surface of the cylindrical member, and the number of the fitting portions that can be fitted to the plurality of protrusions is provided on the inner peripheral surface of the outer fitting member. The accompanying prevention tool of any one of Claims 1-4.   The said grip member consists of the shaft member extended in the axial center direction of the said cylindrical member, and the grip part extended orthogonally to a shaft member from the free end part side of the said shaft member. The anti-rotation tool according to claim 1.   The accompanying rotation prevention tool according to any one of claims 1 to 6, wherein the outer fitting member and the grip member are configured to be separable and connectable to each other.

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