Pipe socket cover

Abstract

The present invention provides a pipe socket cover configuration that can suppress the adhesion of foreign matter to the sealing member and improve the workability of the joining process. [Solution] The socket cover 1 has a columnar portion 2 that extends axially so as to be insertable into the socket W2a of the pipe to be joined W2, and a mounting portion 3 that extends radially outward from one axial end of the columnar portion 2 and contacts the end face W2c of the pipe to be joined W2 on the socket W2a side when the columnar portion 2 is inserted into the socket W2a. The columnar portion 2 has a through hole 2a that penetrates axially in its central portion.

Description

Technical Field

[0001] The present invention relates to a socket cover for a pipe that is attached to a socket of a joined pipe into which a socket of a pipe having a socket and a receiving port is inserted.

Background Art

[0002] A sealing member that seals between the outer peripheral surface of the socket of a pipe and the inner peripheral surface of the socket of the joined pipe to which the pipe is joined is known. As such a sealing member, for example, Patent Document 1 discloses a rubber ring having a heel portion that fits and engages in a locking groove formed on the peripheral surface of a rubber ring arrangement recess of the socket, and a valve portion that is compressed between the peripheral surface of the rubber ring arrangement recess and the outer peripheral surface of the insertion port to generate a sealing surface pressure.

[0003] Also, a pipe joining device for joining the socket of a pipe to the socket of a joined pipe to which the pipe is joined is known. For example, Patent Document 2 discloses a pipe joining attachment for a working machine having a gripping portion for gripping a pipe, and a joined pipe contact portion that is located in the axial direction of the socket of the pipe gripped by the gripping portion and contacts the outer peripheral surface on the receiving port side of the joined pipe to which the pipe is joined. By using this pipe joining attachment, the pipe can be gripped and the socket of the pipe can be inserted into the socket of the joined pipe.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] Incidentally, in general pipe joining work, it is necessary to suspend the pipe to be joined into the groove in which the pipe to be joined is laid. At this time, there is a possibility that foreign matter such as sand and dust may adhere to the sealing member of the receiving end of the pipe. If the joining work between the pipe and the pipe to be joined is performed with foreign matter adhering to the sealing member, cracks or other damage may occur in the sealing member. Therefore, in order to prevent foreign matter from adhering to the sealing member, it is conceivable to prevent foreign matter from entering the receiving end by attaching a receiving end cover to the receiving end.

[0006] On the other hand, in addition to the configuration described in Patent Document 2 above, a pipe joining device could also be considered that, for example, grips the pipe to be joined and pulls the insertion end of the pipe axially toward the receiving end of the pipe to be joined. In the case of such a joining device, the part that grips the pipe and pulls it axially toward the pipe to be joined must be positioned axially with respect to the receiving end. As a result, in order to avoid interference with the joining device, the pipe must be suspended at a position sufficiently far from the receiving end of the pipe to be joined in the axial direction, and a large working space must be secured axially with respect to the receiving end of the pipe to be joined. If a large working space is secured axially with respect to the pipe to be joined in this way, the distance the pipe must be moved will be longer, which may reduce the work efficiency of the joining operation.

[0007] Therefore, there is a need for a pipe socket cover configuration that can suppress the adhesion of foreign matter to the sealing member and improve the workability of the joining process.

[0008] The object of the present invention is to provide a pipe socket cover configuration that can suppress the adhesion of foreign matter to the sealing member and improve the workability of the joining process. [Means for solving the problem]

[0009] A pipe socket cover according to one embodiment of the present invention is a socket cover attached to the socket of a pipe to be joined into which the spigot of a pipe having a spout and a socket is inserted. The pipe socket cover has a columnar portion that extends axially so as to be insertable into the socket, and a mounting portion that extends radially outward from one axial end of the columnar portion and contacts the end face of the pipe to be joined on the socket side when the columnar portion is inserted into the socket. The columnar portion has a through hole that penetrates axially in its central portion (first configuration).

[0010] The columnar portion of the pipe socket cover having the above-described configuration has a through-hole that penetrates axially, allowing a part of the equipment used during joining work to be temporarily housed in the through-hole. This allows the pipe to be lowered close to the pipe to be joined. Therefore, the workspace required for joining the pipe and the pipe to be joined can be reduced. This improves the work efficiency of the joining work.

[0011] Furthermore, the columnar portion extending axially within the socket prevents the part of the device from coming into contact with the sealing member attached to the inner circumferential surface of the socket, or from foreign matter adhering to the sealing member, when the part of the device is housed in the through hole.

[0012] Therefore, it is possible to provide a pipe socket cover configuration that can suppress the adhesion of foreign matter to the sealing member and improve the workability of the joining process.

[0013] In the first configuration described above, the columnar portion has a length such that the other end in the axial direction is located on the opposite side of the opening of the receiving opening from the sealing member attached to the inner circumferential surface of the receiving opening (second configuration).

[0014] This allows the columnar portion to be positioned radially inward relative to the sealing member when the receiving end cover is attached to the receiving end. Therefore, it is possible to more reliably prevent a part of the device from coming into contact with the sealing member or foreign matter from adhering to the sealing member.

[0015] In the first or second configuration described above, the mounting portion has a plate portion extending radially outward from one axial end of the columnar portion, when the columnar portion is viewed in the axial direction, beyond the outer circumferential surface of the receiving end of the pipe to be joined, and a projection portion projecting from the outer circumferential side of the plate portion in the direction in which the columnar portion extends (third configuration).

[0016] This provides a configuration in which the receiving end of the pipe to be joined can be clamped radially by the protruding part and the columnar part of the mounting section. This allows the receiving end cover to be easily attached to the receiving end.

[0017] In the third configuration described above, an elastically deformable elastic member is arranged on the radially inner surface of the protrusion (fourth configuration).

[0018] This results in a configuration in which an elastically deformable elastic member is interposed between the receiving end of the pipe to be joined and the protruding part of the mounting portion. This allows the receiving end cover to be attached to the receiving end more easily and securely.

[0019] In the fourth configuration described above, the protruding portion is cylindrical in shape, projecting from the entire outer circumference of the plate portion in the direction in which the columnar portion extends. The elastic member is arranged around the entire inner surface of the protruding portion (fifth configuration).

[0020] This results in a configuration in which the protruding portion and the elastic member seal the gap between the mounting portion and the receiving end of the pipe to be joined. Therefore, it is possible to prevent foreign matter from entering the receiving end from between the mounting portion and the receiving end.

[0021] The first or second configuration further comprises a handle portion provided on the mounting portion (sixth configuration).

[0022] This provides a configuration that allows the receiving port cover to be easily removed while it is attached to the receiving port.

[0023] In the first or second configuration, the columnar portion is tapered with a smaller inner diameter as it extends from the mounting portion toward the other end in the axial direction (seventh configuration).

[0024] The tapered columnar portion serves as a guide when housing a part of the device in the through-hole. Therefore, a part of the device can be easily housed in the through-hole.

[0025] Moreover, the inner diameter of the columnar portion decreases from the one end in the axial direction where the mounting portion is located toward the other end in the axial direction located on the side opposite to the opening side of the receiving port. That is, the inner surface of the columnar portion is separated from the inner peripheral surface of the receiving port as it faces the opposite side. This can more reliably prevent a part of the device from contacting the sealing member.

Advantages of the Invention

[0026] The receiving port cover for a pipe according to an embodiment of the present invention has a columnar portion extending in the axial direction so as to be insertable into the receiving port, and the columnar portion has a through-hole penetrating axially in the central portion. Since a part of the device used during the joining operation can be temporarily housed in the through-hole, the pipe can be suspended near the pipe to be joined. Further, the columnar portion can suppress the adhesion of foreign matter to the sealing member. Therefore, it is possible to provide a configuration of a receiving port cover for a pipe that can suppress the adhesion of foreign matter to the sealing member and improve the workability of the joining operation.

Brief Description of the Drawings

[0027] [Figure 1] FIG. 1 is a cross-sectional view showing an example of the schematic configuration of the receiving port cover according to Embodiment 1. [Figure 2] FIG. 2 is a perspective view of the receiving port cover according to Embodiment 1. [Figure 3] FIG. 3 is a side view showing the schematic configuration of an exemplary pipe joining device for joining a pipe and a pipe to be joined. [Figure 4] FIG. 4 is a view showing a state where the pipe joining device is attached to the pipe to be joined. [Figure 5] Figure 5 shows the state in which the pipe gripping part grips the pipe. [Figure 6] Figure 6 illustrates how to remove the socket cover from the pipe to be joined. [Figure 7] Figure 7 is a cross-sectional view showing an example of the schematic configuration of the socket cover according to Embodiment 2. [Figure 8] Figure 8 is a perspective view of the socket cover according to Embodiment 2. [Modes for carrying out the invention]

[0028] The following describes each embodiment with reference to the drawings. In each drawing, the same parts are denoted by the same reference numerals, and the description of those parts will not be repeated. Note that the dimensions of the components in each drawing do not faithfully represent the dimensions of the actual components or the dimensional ratios of each component.

[0029] In the following description, the axial direction refers to the direction in which the axis L2 of the pipe W2 to be joined extends. The left-right direction refers to the horizontal direction that is also perpendicular to the axial direction. The horizontal direction includes not only the strictly horizontal direction but also the direction that intersects the vertical direction.

[0030] Furthermore, in the following explanation, the expressions "fix," "connect," and "attach" (hereinafter referred to as "fixing, etc.") include not only cases where components are directly fixed to each other, but also cases where they are fixed to each other via other components. In other words, in the following explanation, the expressions "fixing, etc." include both direct and indirect fixing of components to each other.

[0031] (Embodiment 1) Figure 1 is a cross-sectional view showing an example of the schematic configuration of a socket cover 1 according to Embodiment 1 of the present invention. Figure 2 is a perspective view of the socket cover 1. The socket cover 1 is a socket cover for a pipe. The socket cover 1 is attached to the socket W2a of the pipe to be joined W2 into which the insertion port W1a of pipe W1 is inserted. The socket cover 1 prevents foreign matter such as sand and dust from entering the socket W2a of the pipe to be joined W2. Furthermore, by attaching the socket cover 1 of the present invention to the socket W2a, the workability of the pipe joining work in which pipe W1 and pipe to be joined W2 can be improved, as will be described later.

[0032] Pipe W1 and pipe W2 are, for example, water pipes. Pipe W1 and pipe W2 may be other types of pipes, such as sewer pipes, agricultural water pipes, or gas pipes. Pipe W1 and pipe W2 may be ductile cast iron pipes, other metal pipes, or resin pipes.

[0033] As shown in Figure 1, a sealing member S is attached to the inner circumferential surface of the socket W2a. The sealing member S is a rubber member that seals the space between the outer circumferential surface of the socket W1a of the pipe W1 and the inner circumferential surface of the socket W2a of the pipe to be joined. Note that the sealing member may be made of a material other than rubber, as long as it can seal the space between the outer circumferential surface of the socket W1a of the pipe W1 and the inner circumferential surface of the socket W2a of the pipe to be joined.

[0034] As shown in Figures 1 and 2, the receiving cover 1 has a columnar portion 2 and a mounting portion 3. In this embodiment, the receiving cover 1 further has an elastic member 4.

[0035] The columnar portion 2 is a member that extends in the axial direction and is inserted into the receiving opening W2a. The columnar portion 2 is made of, for example, a resin material.

[0036] In this embodiment, the columnar portion 2 has a length such that its other axial end is located on the opposite side of the opening W2b of the receiving opening W2a from the sealing member S, which is attached to the inner circumferential surface of the receiving opening W2a. That is, the other axial end of the columnar portion 2 is located on the opposite axial side from the sealing member S. Therefore, when the receiving opening cover 1 is attached to the receiving opening W2a, the columnar portion 2 is located radially inward of the sealing member S. Consequently, the columnar portion 2 can suppress the adhesion of foreign matter to the sealing member S.

[0037] In this embodiment, the columnar portion 2 is a frustoconical shape extending in the axial direction, and has a through hole 2a in the central part when viewed in the axial direction, which penetrates in the axial direction. Specifically, the columnar portion 2 has circular ends when viewed in the axial direction, and the outer diameter decreases from one end to the other. The through hole 2a has circular openings when viewed in the axial direction, and the inner diameter decreases from one end to the other. In other words, the columnar portion 2 is a hollow frustoconical shape, and is tapered, with the outer and inner diameters decreasing from one end to the other.

[0038] As a result, as shown in Figure 1, a configuration is obtained in which the sealing member S and the columnar portion 2 are less likely to come into contact when the receiving cover 1 is attached to the receiving opening W2a. Therefore, even if a lubricant is applied to the sealing member S, the receiving cover 1 can prevent the lubricant from being removed. Furthermore, as will be described later, it is possible to prevent the pipe gripping portion 102 of the pipe joining device 100 housed in the through hole 2a from coming into contact with the sealing member S.

[0039] The mounting portion 3 is an annular member when viewed in the axial direction, and extends radially outward from one axial end of the columnar portion 2. The mounting portion 3 contacts the end face W2c of the pipe to be joined W2 on the side of the receiving opening W2a when the columnar portion 2 is inserted into the receiving opening W2a. The mounting portion 3 is made of, for example, a resin material. In this embodiment, the mounting portion 3 is integrally molded with the columnar portion 2.

[0040] The mounting portion 3 positions the socket cover 1 axially and radially with respect to the socket W2a. Specifically, the mounting portion 3 has a plate portion 31 that contacts the end face W2c of the socket W2a in the axial direction, and a projection portion 32 that extends radially outward from the outer circumferential surface of the end on the socket W2a side, in the direction in which the columnar portion 2 extends.

[0041] The plate portion 31 is annular and plate-shaped, with its inner circumference connected to one axial end of the columnar portion 2. The outer circumference of the plate portion 31 is located radially outward from the outer surface of the end of the receiving end W2a of the pipe W2 to be joined, when viewed in the axial direction. One surface of the plate portion 31 in the thickness direction contacts the end surface W2c of the receiving end W2a in the axial direction. This allows the receiving end cover 1 to be positioned in the axial direction when the columnar portion 2 is inserted into the receiving end W2a.

[0042] The protruding portion 32 extends from the outer circumference of the plate portion 31 in the other axial direction. That is, the protruding portion 32 protrudes from the outer circumference of the plate portion 31 in the direction in which the columnar portion 2 extends. In this embodiment, the protruding portion 32 protrudes from the entire outer circumference of the plate portion 31 in the direction in which the columnar portion 2 extends. Therefore, an annular groove with the plate portion 31 as the bottom surface is formed radially between the outer surface of the columnar portion 2 and the inner surface of the protruding portion 32. By inserting the end on the receiving end W2a side into this groove, the receiving end cover 1 can be attached to the receiving end W2a while being positioned radially.

[0043] In this embodiment, an elastic member 4 is located on the radially inner surface of the protrusion 32. The elastic member 4 is made of an elastically deformable material. The material is, for example, rubber or resin. Therefore, with the receiving opening cover 1 attached to the receiving opening W2a, the elastic member 4 is located between the protrusion 32 and the outer circumferential surface of the end on the receiving opening W2a side. The elastic member 4 is elastically deformable. Therefore, the receiving opening cover 1 can be attached to the receiving opening W2a easily and more reliably.

[0044] In this embodiment, the elastic member 4 is arranged around the entire circumference on the inner circumferential surface of the projection 32. That is, in this embodiment, the projection 32 is cylindrical in shape, protruding from the entire circumference on the outer side of the plate portion 31 in the direction in which the columnar portion 2 extends, and the elastic member 4 is arranged around the entire circumference on the inner circumferential surface of the projection 32.

[0045] As a result, the protruding portion 32 and the elastic member 4 seal the gap between the mounting portion 3 and the receiving end W2a of the pipe to be joined. Therefore, it is possible to prevent foreign matter from entering the receiving end W2a from between the mounting portion 3 and the receiving end W2a. Thus, it is possible to prevent foreign matter from adhering to the sealing member S.

[0046] (Pipe joining work) Next, referring to Figures 3 to 6, the joining process between pipe W1 and pipe to be joined W2 when the socket cover 1 is attached to the socket W2a will be explained. Figure 3 is a side view showing the schematic configuration of an exemplary pipe joining device 100 for joining pipe W1 and pipe to be joined W2. Figure 4 shows the state in which the pipe joining device 100 is attached to pipe to be joined W2. Figure 5 shows the state in which the pipe gripping part 102 grips pipe W1. Figure 6 shows the process of removing the socket cover 1 from pipe to be joined W2. In each figure, the white arrows indicate the direction of movement of the pipe gripping part 102.

[0047] First, an exemplary pipe joining device 100 will be briefly described using Figure 3. The pipe joining device 100 is a device for joining pipe W1 and pipe W2 by inserting the insertion end W1a of pipe W1 into the receiving end W2a of pipe W2. The pipe joining device 100 is used in a groove where pipe W1 and pipe W2 are laid. The pipe joining device 100 is sized to be installed in the groove. The pipe joining device 100 is lowered into the groove, for example, by a work machine.

[0048] The pipe joining device 100 adjusts the position of the insertion opening W1a of pipe W1 relative to the axis L2 of the receiving opening W2a of pipe W2, and then inserts the insertion opening W1a of pipe W1 into the receiving opening W2a of pipe W2. Specifically, the pipe joining device 100 includes a pipe attachment part 101 attached to pipe W2, a pipe gripping part 102 for gripping pipe W1, and a moving mechanism 103 for moving the pipe gripping part 102 in the axial direction.

[0049] The pipe attachment portion 101 is attached to the pipe W2. The exemplary pipe joining device 100 is installed in a groove by attaching the pipe attachment portion 101 to the pipe W2.

[0050] The pipe gripping portion 102 has a pair of plate-shaped gripping members that extend in the axial direction. The pipe gripping portion 102 grips the insertion end W1a of the pipe W1 by clamping it from both the left and right sides. The pipe W1 has an insertion end projection W1b at the insertion end W1a side, the outer surface of which protrudes radially outward. The pipe gripping portion 102 grips the outer surface of the pipe W1, and its tip is configured to be able to contact the insertion end projection W1b in the axial direction.

[0051] The moving mechanism 103 is supported by the pipe attachment portion 101 and moves the pipe gripping portion 102 in the axial direction. Specifically, the moving mechanism 103 has an extendable portion 103a that is driven to extend and retract in the axial direction, and a drive portion 103b that drives the extendable portion 103a. The pipe gripping portion 102 is connected to the tip of the extendable portion 103a.

[0052] With the pipe gripping part 102 gripping the pipe W1, the telescopic part 103a is driven by the drive part 103b, causing the pipe gripping part 102 to approach the pipe to be joined W2, and the insertion opening W1a of the pipe W1 to be inserted into the receiving opening W2a of the pipe to be joined. As a result, the pipe W1 and the pipe to be joined W2 are joined.

[0053] Next, using Figures 4 to 6, the joining process between the pipe to be joined W2, which has a socket cover 1 attached to its socket W2a, and the pipe W1 will be explained using the pipe joining device 100 configured as described above.

[0054] First, as shown in Figure 4, the pipe joining device 100 is attached to the pipe to be joined W2, which is positioned in the groove. At this time, the receiving end cover 1 is attached to the receiving end W2a. Therefore, when installing the pipe joining device 100 in the groove, foreign matter is prevented from entering the receiving end W2a.

[0055] Next, the drive unit 103b is driven to house the pipe gripping portion 102 within the through hole 2a of the columnar portion 2 of the receiving opening cover 1. As described above, the columnar portion 2 extends axially within the receiving opening W2a. Therefore, when housing the pipe gripping portion 102 within the through hole 2a, contact between the pipe gripping portion 102 and the sealing member S attached to the inner circumferential surface of the receiving opening W2a is suppressed.

[0056] Subsequently, pipe W1 is lowered into the groove. At this time, since the pipe gripping part 102 is housed in the through hole 2a, pipe W1 can be lowered close to the pipe W2 to be joined.

[0057] Next, as shown in Figure 5, the pipe gripping part 102 is moved to a position for gripping the pipe W1, and the pipe W1 is gripped by the pipe gripping part 102.

[0058] Next, as shown in Figure 6, the socket cover 1 is removed from the socket W2a, and then the drive unit 103b is driven to move the pipe gripping unit 102 toward the pipe to be joined W2. Through these steps, the pipe W1 can be joined to the pipe to be joined W2, which had the socket cover 1 attached to the socket W2a.

[0059] In other words, the socket cover 1 according to this embodiment is a socket cover 1 that is attached to the socket W2a of a pipe to be joined W2, into which the socket W1a of a pipe W1 having a socket W1a and a socket W2a is inserted. The socket cover 1 has a columnar portion 2 that extends axially so as to be insertable into the socket W2a, and a mounting portion 3 that extends radially outward from one axial end of the columnar portion 2 and contacts the end face W2c of the pipe to be joined W2 on the socket W2a side when the columnar portion 2 is inserted into the socket W2a. The columnar portion 2 has a through hole 2a that penetrates axially in its central portion.

[0060] The columnar portion 2 of the receiving cover 1 having the above-described configuration has a through hole 2a that penetrates in the axial direction, so that a part of the pipe joining device 100 used during joining work can be temporarily housed in the through hole 2a. This allows the pipe W1 to be lowered close to the pipe W2 to be joined. Therefore, the workspace required for joining pipe W1 and the pipe W2 can be reduced. This improves the workability of the joining work.

[0061] Furthermore, the columnar portion 2 extending axially within the socket W2a prevents the pipe joint device 100 from coming into contact with the sealing member S attached to the inner circumferential surface of the socket W2a, and prevents foreign matter from adhering to the sealing member S, when the pipe joint device 100 is housed in the through hole 2a.

[0062] Therefore, it is possible to provide a receiving cover 1 that can suppress the adhesion of foreign matter to the sealing member S and improve the workability of the joining process.

[0063] Furthermore, in this embodiment, the columnar portion 2 has a length such that its other axial end is located on the opposite side of the opening W2b of the receiving opening W2a from the sealing member S attached to the inner circumferential surface of the receiving opening W2a.

[0064] This allows the columnar portion 2 to be positioned radially inward relative to the sealing member S when the receiving end cover 1 is attached to the receiving end W2a. Therefore, it is possible to more reliably prevent the pipe joining device 100 from coming into contact with the sealing member S or foreign matter from adhering to the sealing member S.

[0065] Furthermore, in this embodiment, the mounting portion 3 has a plate portion 31 that extends radially outward from one axial end of the columnar portion 2 beyond the outer circumferential surface of the receiving end W2a side of the pipe W2 to be joined, when the columnar portion 2 is viewed in the axial direction, and a projection portion 32 that protrudes from the outer circumferential side of the plate portion 31 in the direction in which the columnar portion 2 extends.

[0066] This provides a configuration in which the end of the pipe to be joined, on the receiving end W2a side, can be clamped radially by the protruding part 32 and the columnar part 2 of the mounting part 3. This allows the receiving end cover 1 to be easily attached to the receiving end W2a.

[0067] Furthermore, in this embodiment, an elastically deformable elastic member 4 is arranged on the radially inner surface of the protrusion 32 in the receiving cover 1.

[0068] This results in a configuration in which an elastically deformable elastic member 4 is interposed between the receiving end W2a of the pipe to be joined and the protruding portion 32 of the mounting portion 3. This allows the receiving end cover 1 to be attached to the receiving end W2a more easily and securely.

[0069] Furthermore, in this embodiment, the columnar portion 2 is tapered, with its inner diameter decreasing as it moves from the mounting portion 3 towards the other end in the axial direction.

[0070] The tapered columnar portion 2 serves as a guide when housing the pipe joining device 100 within the through hole 2a. Therefore, the pipe joining device 100 can be easily housed within the through hole 2a.

[0071] Furthermore, the inner diameter of the columnar portion 2 decreases from one axial end where the mounting portion 3 is located towards the other axial end. That is, the inner surface of the columnar portion 2 moves further away from the inner circumferential surface of the receiving opening W2a towards the other axial end. This makes it possible to more reliably prevent the pipe joining device 100 from coming into contact with the sealing member S.

[0072] (Embodiment 2) Next, a receiving cover 201 according to Embodiment 2 of the present invention will be described. In this embodiment, the receiving cover 201 has a columnar portion 2, a mounting portion 3, and an elastic member 4 with the same configuration as in Embodiment 1, and further has a handle portion 5.

[0073] The handle portion 5 is provided on the mounting portion 3. The handle portion 5 serves as a handle when attaching and detaching the socket cover 201 to the socket W2a. Therefore, a configuration is provided that allows the socket cover 201 to be easily removed from the socket W2a during pipe joining work.

[0074] Figure 7 is a cross-sectional view showing an example of the schematic configuration of the socket cover 201 according to Embodiment 2. Figure 8 is a perspective view of the socket cover 201. For example, as shown in Figures 7 and 8, the socket cover 201 has one handle portion 5. The handle portion 5 protrudes in the thickness direction from the plate portion 31 of the mounting portion 3 and has an opening 5a that penetrates the socket cover 201 in the radial direction.

[0075] The socket cover 201 having this configuration can be attached to the socket W2a with the handle portion 5 positioned on the upper side. By attaching the socket cover 201 to the socket W2a in this position, the socket cover 201 can be easily removed and retrieved from the groove from the pipe to be joined W2, which is located in the groove, during pipe joining work. Therefore, the workability of the joining work can be improved.

[0076] The number, configuration, position, and shape of the handle portion may be any configuration as long as it functions as a handle for removing the receiving opening cover 201 from the receiving opening W2a when it is attached to the receiving opening W2a. For example, there may be multiple handle portions. The handle portion may be arc-shaped or polygonal when viewed in the direction of the opening of the opening. The handle portion may be provided so as to traverse the plate portion radially so as to overlap with the through hole when viewed in the axial direction of the columnar portion.

[0077] (Other embodiments) Although embodiments of the present invention have been described above, the embodiments described above are merely examples for carrying out the present invention. Therefore, the invention is not limited to the embodiments described above, and it is possible to carry out the invention by appropriately modifying the embodiments described above without departing from the spirit of the invention.

[0078] In each of the above embodiments, the columnar portion 2 is a frustoconical shape extending in the axial direction. However, the columnar portion may also be a cylindrical shape extending in the axial direction.

[0079] In each of the above embodiments, the columnar portion 2 has a length such that its other axial end is located on the opposite side of the opening W2b of the receiving opening W2a from the sealing member S attached to the inner circumferential surface of the receiving opening W2a. However, the columnar portion may have a length such that its other axial end overlaps with the sealing member when viewed radially.

[0080] In each of the embodiments described above, the mounting portion 3 and the columnar portion 2 are integrally molded. However, the mounting portion and the columnar portion may be separate parts and be bonded together with an adhesive or the like.

[0081] In each of the above embodiments, the mounting portion 3 has a plate portion 31 and a protruding portion 32. However, the mounting portion may have a plate portion but not a protruding portion. In this case, the plate portion does not have to extend radially outward beyond the outer circumferential surface of the receiving end of the pipe to be joined when viewed in the axial direction of the columnar portion. Also in this case, the columnar portion may have an outer shape that contacts the inner circumferential surface of the receiving end. This allows the receiving end cover to be positioned radially when the columnar portion is inserted into the receiving end.

[0082] In each of the above embodiments, the receiving cover 1,201 has an elastic member 4. However, the receiving cover does not have to have an elastic member.

[0083] In each of the above embodiments, the projection 32 of the mounting portion 3 is cylindrical, projecting from the entire outer circumference of the plate portion 31 in the direction in which the columnar portion 2 extends, and the elastic member 4 is arranged on the inner circumferential surface of the projection 32 over its entire circumference. However, the projection may also project from a part of the outer circumference of the plate portion in the direction in which the columnar portion extends. The elastic member may also be arranged on a part of the inner circumferential surface of the projection.

[0084] In each of the above embodiments, the joining process between the pipe W1 and the pipe to be joined W2 when the socket cover 1,201 is attached to the socket W2a was described using an exemplary pipe joining device 100. However, the joining process may be performed using a pipe joining device with a different configuration. Furthermore, the socket cover may be attached to the socket of the pipe to be joined that is not joined to another pipe. [Industrial applicability]

[0085] The present invention can be used for a socket cover that is attached to the socket of a pipe to be joined into which the socket of a pipe having a socket and a socket is inserted. [Explanation of symbols]

[0086] 1, 201 Receptacle Cover 2 Columnar part 2a Through hole 3. Mounting part 4 Elastic members 5. Handle section 5a opening 31 Board part 32 Protrusion 100 Pipe joining equipment 101 Connection part for pipe to be joined 102 Tube grip part 103 Moving mechanism 103a Telescopic part 103b Drive unit S sealing member W1 tube W1a Socket W1b Insertion port protrusion W2 Joined pipe W2a socket W2b Receptacle opening W2c End face of the receiving end of the pipe to be joined L1, L2 axis

Claims

1. A socket cover that is attached to the socket of a pipe to be joined into which the socket of a pipe having a socket and a socket is inserted, A columnar portion extending axially so as to be insertable into the aforementioned socket, A mounting portion extends radially outward from one axial end of the columnar portion and contacts the end face of the pipe to be joined on the receiving end side when the columnar portion is inserted into the receiving end, It has, The columnar portion is, It has a through hole that penetrates axially in the central part, Pipe socket cover.

2. In the pipe socket cover according to claim 1, The columnar portion has such a length that its other axial end is located on the opposite side of the opening of the receiving opening from the sealing member attached to the inner circumferential surface of the receiving opening. Pipe socket cover.

3. In the pipe socket cover according to claim 1 or claim 2, The aforementioned mounting portion is A plate portion extends radially outward from one end of the columnar portion in the axial direction, beyond the outer circumferential surface of the receiving end of the pipe to be joined, when the columnar portion is viewed in the axial direction. A protruding portion that extends from the outer circumference of the plate portion in the direction in which the columnar portion extends, Having, Pipe socket cover.

4. In the pipe socket cover according to claim 3, An elastically deformable elastic member is placed on the radially inner surface of the aforementioned protrusion. Pipe socket cover.

5. In the pipe socket cover according to claim 4, The aforementioned protruding portion is cylindrical in shape, projecting from the entire outer circumference of the plate portion in the direction in which the columnar portion extends. The elastic member is arranged around the entire circumference on the inner circumferential surface of the protrusion. Pipe socket cover.

6. In the pipe socket cover according to claim 1 or claim 2, The mounting portion further has a handle portion, Pipe socket cover.

7. In the pipe socket cover according to claim 1 or claim 2, The columnar portion is tapered, with its inner diameter decreasing as it moves from the mounting portion toward the other end in the axial direction. Pipe socket cover.

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