JP3148394U - Anchor positioning jig - Google Patents

Abstract

An anchor positioning jig that ensures uniform driving of an anchor is provided. An anchor positioning jig 10 is formed of a hollow body having a flange 12 projecting outward, a screw surface (female screw 14) to which a screw formed on an anchor 20 is screwed, and a screwed anchor. And a stopper 16 capable of abutting the tip. The jig 10 screwed to the anchor 20 is loaded and stored in the portable hydraulic processing machine through the opening of the housing of the portable hydraulic processing machine, and is arranged so that the flange 12 is positioned in the annular groove on the inner surface of the housing. Is done. When the piston of the portable hydraulic processing machine moves forward and presses the core rod 27, the flange 12 is pressed against the side wall of the annular groove of the housing, and the fixing point of the side wall of the annular groove of the housing is the substantial driving of the core rod. A starting criterion. [Selection] Figure 2

Description

  The present invention relates to an anchor positioning jig that is detachably loaded in a portable hydraulic processing machine that moves a piston by supplying pressurized oil.

  An anchor is embedded in a concrete surface with a part protruding, and the structure is fixed using the anchor. This type of anchor is mainly made of metal and is also called an anchor bolt because it is threaded at the protruding end (protruding end).

  The anchor is formed of a hollow body with a central hole, and the end (embedded end) on the side to be embedded is an enlarged diameter portion with a slit, and is formed in a shape in which a core bar is inserted into the central hole. The anchor is inserted into the hole drilled in the concrete surface from the embedded end, and the core rod is driven to widen the expanded diameter portion, thereby securing a frictional force between the hole wall surface and being fixed so that it cannot be pulled out.

  The anchor (to be exact, the core rod of the anchor) must be driven by a predetermined distance, and if the anchor is not driven deeply, the expanded diameter portion cannot be expanded sufficiently and is required between the wall of the hole. Can't secure a good frictional force. On the other hand, if the anchor is driven too much, the enlarged diameter portion is forcibly pressed against the hole wall and is damaged, and the frictional force is extremely reduced, which may not function as the anchor.

Usually, the anchor is driven by starting a portable hydraulic processing machine, advancing its piston, and pushing the anchor (core bar) into the central hole. Then, paying attention to the progress of the anchor, it is visually confirmed that the anchor has been driven by a predetermined distance, and the anchor has been driven.
Anchors are driven continuously for a series of anchors. However, in the method that relies on visual observation of the driving distance, the frictional force of the anchors is likely to vary, and the frictional force of the anchors is sufficiently large and uniform. It is difficult to ensure.

  For example, Japanese Patent Laid-Open No. 60-085878 discloses a configuration in which a support member is provided at the tip of a portable hydraulic processing machine, and the support member has a cylindrical anchor bolt clamp mechanism that holds a nut screwed into an anchor. Is described. The anchor bolt clamp mechanism regulates the relative position between the anchor and the portable hydraulic processing machine by bringing the inner surface of the mouth into contact with the outer surface of the anchor nut (the surface on the concrete surface side). In this configuration in which the relative position between the anchor and the portable hydraulic processing machine is regulated, it is sufficient if the piston of the portable hydraulic processing machine is advanced by a predetermined distance (the driving distance for obtaining the required frictional force). A uniform frictional force can always be secured.

Japanese Patent Application Laid-Open No. 10-244476 describes a configuration in which a cylindrical adapter is provided at the tip of a portable hydraulic processing machine. The adapter is formed in a shape having a bottom fitting portion that contacts the concrete surface at the tip and an intermediate fitting portion that contacts the outer surface of the nut screwed to the anchor at the middle portion. And while making the bottom face fitting part of an adapter contact a concrete surface, the intermediate fitting part is made to contact | abut the outer surface of the nut of an anchor, and the relative position of an anchor and a portable hydraulic processing machine is controlled. Moreover, about the anchor which has a step part between the external thread part and the part which is not threaded, the structure which provided another intermediate fitting part which contact | abuts a step part in the adapter is also described.
According to the configuration described in Japanese Patent Application Laid-Open No. 10-244476, it is possible to always ensure a sufficiently large and uniform frictional force by advancing the piston of the portable hydraulic processing machine by a predetermined distance.

In JP-A-60-085878, the support member has a substantially semicircular shape, and in JP-A-10-244476, an elongated hole extending in the axial direction is provided in the adapter so that the anchor with a nut is attached. An opening for storing inside is secured.
Japanese Patent Laid-Open No. 60-085878 JP-A-10-244476

  The anchor inner surface of the mouth of the anchor bolt clamp mechanism (Japanese Patent Laid-Open No. 60-085878) and the intermediate fitting portion of the adapter (Japanese Patent Laid-Open No. 10-244476) are brought into contact with the outer surface of the nut of the anchor and the hydraulic pressure for portable use. In the known configuration that regulates the relative position to the type processing machine, the position of the nut serves as a reference for driving the anchor, and it is necessary to prepare for screwing the nut onto the anchor prior to driving the anchor. Furthermore, even if the piston is advanced by the same distance, if the position of the nut screwed to the anchor is displaced, the anchor (core rod) will be driven shallower or deeper, and the anchor driving distance will vary. Unable to secure uniform friction force due to size.

An anchor (standard type anchor; core rod drive-in type anchor) is generally used in which a male rod is formed, a core rod is inserted into the center hole, and the core rod is driven to widen the enlarged diameter portion with a slit at the end (embedded end). Although it is appropriate, an internal cone driving type anchor is also known in which a central hole is built in an internal cone and the internal cone is driven with a general-purpose core rod. In the internal cone driving type anchor, a female screw is formed on the inner surface of the central hole.
Since the internal cone driving type anchor does not have a male screw and a nut is not screwed in, portable hydraulic processing in Japanese Patent Application Laid-Open Nos. 60-085878 and 10-244476 uses the position of the nut as a reference for driving the anchor. The machine cannot drive anchors.
Therefore, for the internal cone driving type anchor, the internal cone is driven by hitting the driving rod with a hammer.

  An object of the present invention is to provide an anchor positioning jig that ensures uniform driving of an anchor.

  According to this invention of Claim 1, it consists of a hollow body with the flange protruded outward, and the thread surface to which the screw formed in the anchor is screwed together and the tip of the screwed anchor can be contacted And a stopper.

According to the second aspect of the present invention, the internal thread is formed on a part of the inner surface of the hollow body having a flange projecting outwardly, and the male screw formed on the anchor is screwed together. A stopper capable of contacting the tip of the anchored anchor protrudes inward from the inner surface where no female thread is formed.
In the present invention of claim 2, the core rod driving type anchor (standard type anchor) is targeted for positioning.

According to the third aspect of the present invention, the external thread is formed in a part of the outer surface of the hollow body having a flange projecting outwardly, and is formed on the anchor so that the screw is engaged with the screw. By forming the outer surface on which the screw is not formed into a stepped shape having a larger diameter than the surface on which the male screw is formed, a stopper capable of contacting the screwed anchor tip is provided on the outer surface.
According to the third aspect of the present invention, the internal cone driving type anchor is the object of positioning.

According to the first aspect of the present invention, when the anchor screw is screwed onto the thread surface of the anchor positioning jig and the anchor is screwed into the anchor positioning jig until the anchor tip abuts against the stopper, the anchor tip abuts against the stopper. Thus, the position of the anchor relative to the anchor positioning jig is defined relatively.
Conventionally, the position of the nut screwed to the anchor is the reference for driving the anchor, so if the position of the nut is shifted, the anchor (core bar) can be moved even if the piston of the portable hydraulic processing machine is advanced by the same distance. ) The driving distance varies. In contrast, in the present invention, the tip of the anchor is brought into contact with the stopper of the anchor positioning jig. Therefore, if the position of the stopper is constant, the anchor (core bar) under the advance of the same distance of the piston is used. Are always equal, and uniform implantation is possible.
The anchor positioning jig is loaded into a predetermined position of the portable hydraulic processing machine, the anchor positioning jig flange is placed at a certain position, the stopper is also placed at a certain position, and anchor driving is substantially started. (Core rod) driving is set uniformly, and uniform driving of the anchor is guaranteed.

According to the second aspect of the present invention, when the male screw of the anchor (core rod driving type anchor) is screwed into the female screw of the anchor positioning jig, and the anchor is screwed into the jig until the anchor tip contacts the stopper, The position of the anchor relative to the anchor positioning jig is relatively defined by contact with the stopper. Since the tip of the anchor is in contact with the stopper of the anchor positioning jig, if the position of the stopper is constant, the driving of the anchor (core bar) under the same distance of the piston will always be equal and uniform. Can be driven in.
The anchor positioning jig is loaded into a predetermined position of the portable hydraulic processing machine, the anchor positioning jig flange is placed at a certain position, the stopper is also placed at a certain position, and anchor driving is substantially started. (Core rod) driving is set uniformly, and uniform driving of the anchor is guaranteed.

In the present invention according to claim 3, if the female screw of the anchor (inner cone driving type anchor) is screwed into the male screw of the anchor positioning jig, and the anchor is screwed into the anchor positioning jig until the anchor tip contacts the stopper, The position of the anchor relative to the anchor positioning jig is defined relative to the anchor tip and the stopper. Since the tip of the anchor is in contact with the stopper of the anchor positioning jig, if the position of the stopper is constant, the driving of the anchor (inner cone) under the same distance of the piston will always be equal and uniform. Can be driven in.
The anchor positioning jig is loaded into a predetermined position of the portable hydraulic processing machine, the anchor positioning jig flange is placed at a certain position, the stopper is also placed at a certain position, and anchor driving is substantially started. The (inner cone) driving is set uniformly, and the anchor is driven uniformly.

  In the present invention, the internal thread is formed on a part of the inner surface of a hollow body having an outwardly projecting flange, and is formed on a part of the inner surface of the anchor. An abuttable stopper projects inward from the inner surface where no female thread is formed. Then, until the anchor tip comes into contact with the stopper, the anchor positioning jig is screwed into the anchor, and the relative position of the anchor with respect to the anchor positioning jig is determined.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1A and 1B are a longitudinal sectional view and a right side view of an anchor positioning jig according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of the anchor positioning jig screwed to the anchor.
The anchor positioning jig 10 is formed of a hollow body having a flange 12 projecting outward, a screw surface 14 to which a screw formed on the anchor is screwed, and a stopper 16 capable of contacting the screwed anchor tip. have. Here, it goes without saying that the central hole 10a of the anchor positioning jig has an inner diameter through which the core rod of the anchor is inserted. An annular groove 15 is formed on the inner surface between the screw surface 14 and the stopper 16 to isolate the screw surface and the stopper.

The anchor positioning jig 10 shown in FIG. 1 is embodied as a standard type anchor (core rod driving type anchor) 20, and as shown in FIG. 2, the core bar driving type anchor 20 is attached to one end thereof. The male screw 24 is formed, the core rod 27 is inserted into the central hole 25, and the end (embedded end) is a diameter-expanded portion 29 in which a slit 29a is formed.
Since the anchor positioning jig 10 is intended for the core rod driving type anchor 20, the threaded surface 14 is a female screw and the stopper 16 is formed in a shape projecting inwardly from the inner surface where no female screw is formed. . That is, the inner diameter of the stopper 16 is smaller than the outer diameter of the anchor 20.

  As shown in FIG. 2, the anchor positioning jig 10 is attached to the anchor 20 inserted from the enlarged diameter portion 29 into the hole 30a drilled in the concrete surface 30, and the relative position of the anchor with respect to the anchor positioning jig is determined. It is decided. For this attachment and positioning, a female screw (thread surface) 14 of an anchor positioning jig is screwed to the male screw 24 of the anchor, and the anchor positioning jig 10 is screwed (screwed) until it abuts against the stopper 16 at the tip of the anchor. Done.

  By screwing the female screw 14 of the anchor positioning jig onto the male screw 24 of the anchor, the anchor and the anchor positioning jig are integrated, and the anchor positioning jig 10 is screwed into the anchor 20 until the stopper 16 comes into contact with the anchor tip. Thus, the position of the anchor relative to the anchor positioning jig is defined relatively, and the anchor is positioned.

FIG. 3 is a schematic view showing anchor driving by a portable hydraulic processing machine.
The portable hydraulic processing machine 40 is set to store and load the anchor positioning jig 10 attached to the tip of the anchor 20.
The portable hydraulic processing machine 40 is not the gist of the present invention, and its configuration is the same as the known configuration described in Japanese Patent Laid-Open No. 60-085878, and therefore its details are omitted. Generally speaking, the portable hydraulic processing machine 40 uses a battery as a power source, and when the trigger switch 42 is pulled, the pump is activated to pressurize the oil contained therein, and the piston 44 advances inside the cylinder 46 by the pressurized oil. The piston is restored by the spring force of the compressed return spring (compression coil spring).

Also, a housing 46a, which is a part of the cylinder (front half of the cylinder), is bolted to the tip of the cylinder 46, as can be seen from FIGS. 4A and 4B showing a plan view and a left side view of the housing. The front end of the side wall of the housing is cut into a substantially semicircular shape, and an opening 46a1 for storing the anchor positioning jig 10 together with the anchor 20 from the side is formed.
Since the opening 46a1 is formed in the side wall of the housing, if the opening is aligned with the anchor positioning jig 10 integrated with the anchor 20 and the portable hydraulic processing machine 40 is shifted to the side, the anchor positioning jig will be portable hydraulic. It is loaded and stored in the processing machine.

As shown in FIG. 3, the anchor positioning jig 10 loaded and stored in the portable hydraulic processing machine 40 through the opening 46a1 has the flange 12 positioned in the annular groove 46a2 on the inner surface of the housing.
Such a housing with an opening is also used in Japanese Patent Application Laid-Open Nos. 60-085878 and 10-244476, and has only a known structure.

  In FIG. 3, when the pump is started by pulling the trigger switch 42 of the portable hydraulic processing machine, the piston 44 moves forward in the cylinder 46, and the piston presses and drives the core rod 27 of the anchor. When the core rod 27 is driven, the expanded diameter portion 29 is widened and pressed against the wall surface of the hole 30a on the concrete surface, so that the anchor 20 is secured to the hole wall surface to prevent the anchor 20 from being pulled out. Fixed to.

Here, when the piston 44 advances and presses the core rod 27, first, the flange 12 of the anchor positioning jig is pressed against the side wall 46a2 'of the annular groove of the housing, and then the driving of the core rod 27 by the piston 44 is started. The
That is, before the driving of the core rod 27 is substantially started, the flange 12 of the anchor positioning jig is necessarily pressed against the annular groove 46a2 of the housing. Driving is not started.

  When the flange 12 of the anchor positioning jig is pressed against the annular groove 46a2 of the housing, the relative position of the anchor positioning jig 10 with respect to the portable hydraulic processing machine 40 is defined. Since the anchor 20 is integrated with the anchor positioning jig 10, the relative position of the anchor 20 with respect to the portable hydraulic processing machine 40 is defined.

  In contrast to conventional anchor driving, substantial driving of the core rod is started on the basis of the position of the nut screwed in advance to the anchor, and variation in the position of the nut is unavoidable. The fixing point of the side wall 46a2 'of the annular groove of the housing is a reference for starting the substantial driving of the core rod. Therefore, if the advancing distance (piston stroke) of the piston 44 is kept constant, the driving distance of the anchor 20 is always constant, uniform driving is guaranteed for a series of anchors, and sufficient uniform friction force is easily obtained. can get.

When the driving of the anchor 20 by the portable hydraulic processing machine 40 is finished, the portable hydraulic processing machine is shifted to the side, the anchor positioning jig 10 is released, and the anchor positioning jig is screwed out to be screwed with the anchor. Removed. Then, the anchor positioning jig 10 is screwed to the next anchor 20, the portable hydraulic processing machine is shifted sideways, the anchor positioning jig is stored in the portable hydraulic processing machine, and the next driving is started.
In this manner, the anchor positioning jig 10 is detachably loaded into the portable hydraulic processing machine 40, and anchor driving using the anchor positioning jig is continuously performed on the series of anchors 20.

Conventional anchor driving cannot be performed unless the nut is screwed to the anchor in advance, and if a nut is forgotten to be screwed, driving a series of anchors 20 is interrupted.
In the present invention, driving can be performed continuously with respect to the series of anchors 20 regardless of the presence or absence of the nut 21 (see FIG. 2), and the driving time for the series of anchors is shortened. Further, the position of the nut 21 does not serve as a reference for driving the anchor 20, and the screwing position of the nut does not need to be uniform for a series of anchors. Yes. Of course, the nut 21 may be screwed into the anchor 20 after driving, and it is not necessary to screw the nut into the anchor prior to driving the anchor.

  FIG. 5A shows a front view of an anchor positioning jig according to another embodiment of the present invention. An anchor positioning jig according to another embodiment (embodiment 2) is embodied as positioning an internal cone driving type anchor, and FIG. 5 (B) shows a longitudinal sectional view of the internal cone driving type anchor. Here, 100 is added to the corresponding structural member of the second embodiment having the same function as the structural member of the first embodiment.

As shown in FIG. 5A, the anchor positioning jig 110 for the inner cone driving type anchor is also formed of a hollow body having a flange 112 protruding outward, and the center hole 110a is inserted through the driving rod. It is formed on the inner diameter.
As shown in FIG. 5 (B), the inner cone driving type anchor 120 is built in the inner cone 111 in the central hole 125, and a slit 129a is formed at the embedded end of the anchor to become the enlarged diameter portion 129. A female thread 124 is cut in the central hole. In the inner cone driving type anchor 120, when the inner cone 111 is driven by the driving rod 127, the embedded end (expanded portion) 129 is expanded, and a frictional force is secured between the inner wall and the hole wall of the concrete surface.

  Since the internal cone driven anchor 120 has a female thread 124 formed in the center hole thereof, as can be seen from FIG. 5A, the thread surface of the anchor positioning jig screwed into the anchor thread (female thread 124). The screw 114 is formed on a part of the outer surface of the anchor positioning jig. In addition, since the anchor 120 is mounted on the outside of the anchor positioning jig 110, the stopper 116 with which the tip of the anchor is abutted is provided on the outside, and the outer surface on which the male screw is not formed is formed with the male screw. The stopper is formed on the outer surface of the anchor positioning jig by making the stepped shape larger in diameter than the surface.

  FIG. 6 is a longitudinal sectional view of the anchor positioning jig screwed to the anchor. Similar to the first embodiment, the anchor positioning jig 110 is attached to the anchor 120 inserted from the enlarged diameter portion 129 into the hole 130a drilled in the concrete surface 130. The attachment is performed by screwing the anchor positioning jig 110 into the anchor female thread 124 and screwing the anchor positioning jig 110 into the anchor tip until the stopper 116 comes into contact with the stopper 116. Unlike the first embodiment, in the second embodiment, the driving rod 127 is mounted in the central hole 125 of the anchor positioning jig. This driving rod 127 is not disposable but a general-purpose member that is repeatedly used for a series of anchors 120.

  The anchor positioning jig 110 is screwed into the anchor 120 until the stopper 116 comes into contact with the anchor tip. The position of the anchor relative to the anchor positioning jig is defined, and the anchor is positioned.

  As described in the first embodiment with reference to FIG. 3, the anchor positioning jig 110 is stored and loaded in the portable hydraulic processing machine 40 through the opening 46a1 of the housing, and the flange 112 is placed in the annular groove 46a2 on the inner surface of the housing. Located in.

  When the trigger switch 42 of the portable hydraulic processing machine is pulled to advance the piston 44, the piston presses the driving rod 127, the driving rod drives the inner cone 111, and the enlarged diameter portion 129 of the inner cone is widened. By being pressed against the wall surface of the hole 130a on the concrete surface, the anchor 120 is fixed to the concrete surface 130 so as to ensure a frictional force with the hole wall surface and cannot be pulled out.

  Here, when the piston 44 advances and presses the driving rod 127 and the driving rod hits the inner cone 111, the anchor 120 and the anchor positioning jig 110 are integrated. It is pressed against the side wall 46a2 'of the annular groove. Then, the integral movement (driving) of the driving rod 127 and the inner cone 111 by the piston 44 is started.

Also in the second embodiment, before the (integral) driving of the driving rod 127 and the inner cone 111 is substantially started, the flange 112 of the anchor positioning jig is always pressed against the annular groove 46a2 of the housing, and the flange is pressed. The driving rod 127 and the internal cone are not actually driven until after it has been set.
Since the fixing point of the side wall 46a2 'of the annular groove of the housing serves as a reference for starting the substantial driving of the driving rod 127 and the inner cone 111, if the advancing distance (piston stroke) of the piston 44 is kept constant, The anchor driving distance is always constant. By repeatedly using the same driving rod 127, uniform driving is guaranteed for the series of anchors 120, and sufficient and uniform frictional force can be easily obtained.

  Conventionally, the internal cone driving anchor cannot be driven using a portable hydraulic processing machine, and the driving rod is hit with a hammer. It was extremely difficult to drive the inner cone uniformly over a series of anchors. On the other hand, according to the present invention, if the anchor positioning jig 110 is used, the anchor (inner cone) can be driven uniformly regardless of the operator's experience, and the series of anchors 120 can be sufficiently uniform. A frictional force can be easily obtained.

The anchor positioning jigs 10 and 110 are formed of hollow bodies having flanges 12 and 112 projecting outward, and screw surfaces 14 and 114 to which screws formed on the anchors are screwed together with the abutting ends of the screwed anchor tips. It has only the stoppers 16 and 116 that can be contacted, and has a simple configuration and can be molded at low cost.
Further, it is sufficient to provide the annular groove 46a2 for housing the flanges 12 and 112 of the anchor positioning jig on the inner surface of the housing, and it is sufficient and uniform to use the anchor positioning jig by making a slight change to a known portable hydraulic processing machine. It is possible to drive an anchor that ensures a sufficient frictional force.

  As described above, in the present invention, when the anchor screw is screwed onto the thread surface of the anchor positioning jig and the anchor is screwed into the jig until the anchor tip abuts against the stopper, the anchor is brought into contact with the anchor tip and the stopper. The position of the anchor relative to the positioning jig is defined relatively. If the anchor positioning jig is loaded at a predetermined position on the portable hydraulic processing machine and the flange of the anchor positioning jig is placed at a certain position, the stopper is also placed at a certain position, so that the anchor (inner cone) is driven uniformly. This ensures a uniform driving of the anchor.

  The above-described embodiments are for explaining the present invention, and are not intended to limit the present invention. All modifications, alterations and the like within the technical scope of the present invention are included in the present invention. Needless to say.

  In the embodiment, the core rod driving type anchor (standard type anchor) and the inner cone driving type anchor are targeted for positioning. However, the present invention can be applied to any anchor that has a threaded surface and has a widened portion with a slit directly through a core rod or a driving rod and an internal cone. Can be widely applied.

(A) (B) shows the longitudinal cross-sectional view and right view of the anchor positioning jig which concern on one Example of this invention, respectively. The longitudinal cross-sectional view of the anchor positioning jig screwed by the anchor is shown. It is the schematic which shows the driving | operation of the anchor by a portable hydraulic processing machine. The top view and left view of the housing of a portable hydraulic processing machine are shown, respectively. (A) is a front view of an anchor positioning jig according to another embodiment of the present invention, and (B) is a longitudinal sectional view of an internal cone driving type anchor to be positioned. The longitudinal cross-sectional view of the anchor positioning jig screwed by the anchor is shown.

Explanation of symbols

10, 110 Anchor positioning jig 10a, 110a Center hole 12, 112 Flange 14, 114 Thread surface (female thread, male thread)
16, 116 Stopper 20, 120 Anchor (core rod driving type anchor, internal cone driving type anchor)
25, 125 Center hole (anchor) 27 Core rod 127 Driving rod 29, 129 Expanded portion 29a, 129a Slit 30, 130 Concrete surface 30a, 130a Hole 111 Internal cone

Claims (3)

An anchor positioning jig that is detachably loaded into a portable hydraulic processing machine, and is composed of a hollow body having a flange projecting outward, and a screw surface to which a screw formed on the anchor is screwed, and screwing An anchor positioning jig having a stopper capable of abutting the anchor tip. An anchor positioning jig that is detachably loaded into a portable hydraulic processing machine, and is formed of a hollow body having a flange projecting outwardly. An anchor positioning jig that is formed in a part of the anchor and has a stopper that can contact the tip of the anchored screw projecting inwardly from an inner surface on which no female thread is formed. An anchor positioning jig that is detachably loaded into a portable hydraulic processing machine, and is formed of a hollow body having a flange projecting outwardly. A stopper that can be brought into contact with the screwed anchor tip is formed by forming a stepped shape having a larger diameter than the surface on which the external thread is formed while forming an external surface on which the external thread is not formed. Anchor positioning jig provided on the outer surface.

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