JP2006312179A - Fixing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate danger to a worker, which is required for the fixing work, by positioning and fixing a U-shaped anchor mounted to a receiving frame for mounting a ditch cover, when welding it. <P>SOLUTION: A jig 14 vertically moved by an air cylinder 18 is arranged to a base panel 13 to which the receiving frame 4 is attached. The jig 14 has a pair of parallel arms 15. A downwardly protruding pin 19 is fixed to a free end part of each arm 15. A bolt 21 is fixed sideways to the free end part. The pin 19 downwardly protrudes compared with a bolt head part 21a. When each leg part 3a of the anchor 3 is welded on the receiving frame, each leg part 3a of the anchor 3 is inserted under the bolt head part fixed to the arm 15 along on the receiving frame. The jig 14 is descended by the air cylinder 18 after positioning the anchor 3 with the pin 19. The leg parts 3a of the anchor 3 are respectively pressed against and fixed to the receiving frame 4 with the bolt head part 21a of each arm 15. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a fixing device used for fixing an anchor or bolt when welding the anchor or bolt to a metal receiving frame having an L-shaped cross section for mounting a lattice-like groove lid called grating. About.

  The receiving frame for mounting the groove lid is usually attached to the upper step 2 of the concrete side groove 1 as shown in FIG. 1 so as to be securely fixed to the side groove 1 so as not to come off. Therefore, the anchor 3 embedded in the concrete is fixed when the concrete is placed. The receiving frame 4 is interposed between the receiving frame 4 and the groove lid 5 as shown in FIG. 1 so that the groove lid 5 does not rattle due to running of the vehicle or the like. A rubber cushioning material 6 attached with bolts 7 is also known.

  FIG. 2 shows an example in which the anchor 3 is fixed to the receiving frame 4 at an appropriate interval and bolts 7 for attaching the cushioning material 6 are fixed at an appropriate interval. The anchor 3 and the bolt 7 are fixed by welding. It has been broken.

  Conventionally, the anchor and bolt are welded to the receiving frame. In the case of the anchor 3, the bottom 3a of the U-shaped anchor 3 is grasped, and both the leg portions 3b and 3b are brought into contact with the vertical surface of the receiving frame 4, and the both leg portions 3b and 3b. In the case of the bolt 7, the bolt 7 is passed through a hole opened in the horizontal plane of the receiving frame 4, and one side thereof is fillet welded. In either case, the anchor 3 or the bolt 7 is gripped or pressed with the fingertips, and it is dangerous to put a hand close to the welded part, even though the hand is worn with gloves. There may be a problem that the anchor 3 and the bolt 7 are inclined and attached.

  An object of the present invention is to provide a fixing device capable of fixing an anchor or a bolt attached to a receiving frame at the time of welding to eliminate an operator's risk and securely fixing the anchor or the bolt at a predetermined position and orientation. Objective.

  According to the first aspect of the present invention, when welding an anchor embedded in concrete to a metal receiving frame having an L-shaped cross section that is attached to attach a groove lid to an upper step portion of a concrete side groove, the anchor is attached to the receiving frame. A fixing device used for positioning and fixing a base plate on which the receiving frame is mounted horizontally, and on the receiving frame when welding the anchor leg to the receiving frame mounted on the base plate Positioning means for positioning the receiving frame by engaging with the end surface of the leg end, and the anchor leg that can be moved forward and backward toward the base plate and positioned by the positioning means during forward movement is pressed against the receiving frame and fixed And fixing means for moving the actuator toward and away from the platform.

  The anchor used in the present invention may be in the form of a pin or rod, but is preferably a U-shaped anchor shown in FIG. 2 that can sufficiently exhibit the anchor effect. In the case of the anchor 3 as shown in FIG. 2, since both the leg portions 3b and 3b are provided, a pair of positioning means and fixing means are also provided, and positioning and fixing of both leg portions are performed.

  Although only one anchor may be attached to the receiving frame, a plurality of anchors are usually attached at an appropriate interval. When multiple mounting is performed at an appropriate interval, a fixing means should be provided for each mounting position, and the arm of one welding robot should be turned to weld the anchors fixed by each fixing means in order. Alternatively, at least one of the welding machine for welding the anchor to the receiving frame and the anchor fixing means and the platform on which the receiving frame is mounted is fed by a feeding mechanism in a certain amount in the longitudinal direction of the receiving frame. The The base plate and the fixing means may be fixed and welding may be performed manually. In this case, neither a welding robot nor a welding machine feeding device is required.

  The positioning means may be, for example, fixed and independent of the fixing means that can be advanced and retracted, but is preferably supported by the fixing means so that it can advance and retract together with the fixing means. The positioning means positions the anchor in a direction orthogonal to the longitudinal direction of the receiving frame. The positioning means for positioning in the longitudinal direction is provided separately or integrally with the positioning means for positioning in the direction orthogonal to the longitudinal direction. Also good.

  As the positioning means, for example, a pin or rod-like one can be used, and as the anchor fixing means, for example, a pin or a bolt can be used. The leg end face of the anchor is positioned at the lower end of the pin that is mounted vertically and horizontally on the arm that advances and retreats toward the board, and protrudes vertically from the arm, and the anchor is positioned at the protrusion of the pin that protrudes laterally from the anchor. Press and fix the legs to the receiving frame.

  The actuator used in the present invention may be any mechanism or device as long as it is an air cylinder, a hydraulic cylinder, and other fixing means.

  The invention according to claim 2 is the invention according to claim 1, wherein the positioning means is supported by the fixing means and advances and retreats together with the fixing means, and the backward movement is restricted to a fixed amount by the stopper, and the anchor is fixed in this restricted state. The positioning is performed.

  The stopper according to the present invention is preferably configured to be able to switch between a position where the backward movement of the positioning means is restricted to a fixed amount and a position where the backward movement of the positioning means is not restricted by retracting from the position.

  The invention according to claim 3 is made of rubber or resin on the contact surface with the groove lid for the purpose of preventing the groove lid from rattling on the metal groove lid receiving frame having an L-shaped cross section attached to the side groove. A bolt fixing device for use in fixing a bolt for mounting a cushioning material through a hole formed in the receiving frame and fixing it by welding, wherein the receiving frame is mounted sideways on the platform When the bolt for attaching the cushioning material to the receiving frame attached to the bolt is passed through a hole in the receiving frame and welded to the receiving frame, the bolt head can be advanced and retracted, and the bolt head is fixed by pressing it forward. And a second actuator for advancing and retracting the fixing means.

  A plurality of bolts of the present invention are usually provided at an appropriate interval. In the case of providing a plurality, similarly to the anchor, a second fixing means for fixing the bolt is provided for each attachment location, and the arm fixed to each fixing means is sequentially welded by turning the arm of one welding robot. At least one of the welding machine that welds the anchor to the receiving frame and the second fixing means for fixing the bolt, and the platform on which the receiving frame is mounted is the length of the receiving frame by the feed mechanism. A certain amount is sent in the direction. As described above, similarly to the anchor, the base plate and the fixing means may be fixed and welding may be performed manually.

  In a preferred invention, the invention according to claim 3 described above and the invention according to claim 1 or 2 are combined. That is, the anchor fixing device of the invention according to claim 1 or 2 and the bolt fixing device are provided in combination.

  According to the invention of claim 1, after the anchor is positioned and placed on the receiving frame mounted on the base plate by engaging the leg end with the positioning means, the fixing means is advanced by the operation of the actuator. Press and fix the leg of the anchor. After fixing, the anchor legs are welded to the receiving frame. At the time of welding, the fixing means positions and fixes the anchor legs. And the anchor can be securely fixed toward a predetermined position and a predetermined direction of the frame.

  According to the second aspect of the present invention, when the fixing means is retracted from the receiving frame, the anchor is easily inserted and removed between the receiving frame and the fixing means, and the positioning means is also retracted together with the fixing means. Since the retreat is restricted to a fixed amount by the stopper, the anchor can be positioned without any trouble.

  According to the invention of claim 3, after passing the bolt through the hole formed in the receiving frame, the bolt head is pressed by the second fixing means, and the bolt is fixed in a predetermined direction and position. After fixing, the bolt head is welded to the receiving frame. At the time of welding, the second fixing means presses and fixes the bolt head. In comparison, the operator's danger is eliminated, and the bolt can be securely fixed at a predetermined position and orientation.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 3 shows a schematic layout of the welding robot 11 and the fixing device according to the present invention, and welding can be performed within the movable range of the arm 11a of the robot 11 indicated by the arrow in the figure.

  As shown in FIGS. 4 to 6, the anchor fixing device among the fixing devices 12 is a base 13 to which the receiving frame 4 is attached and a U-shaped anchor to the receiving frame 4 attached to the base 13. Positioning means for positioning the leg portions 3a and 3a when welding the leg portions 3a and 3a, and the leg portions 3a and 3a of the anchor 3 positioned by the positioning means by pressing on the receiving frame and fixing And a second fixing means for pressing and fixing the head 7a of the bolt 7 passed through a hole formed in the receiving frame 4. And a second actuator for moving the second fixing means up and down, the details of which will be described below.

  As shown in FIG. 4, the base 13 is made of steel having a substantially E-shaped cross section, and is installed and fixed sideways so that the receiving frame 4 having an L-shaped cross section is mounted sideways on the upper side of the base. It has become.

  On both sides of the base 13, jigs 14 having positioning means and fixing means are arranged. FIG. 5 shows one jig 14 (the other jig has the same structure), and a pair of laterally parallel arms 15 and 15, and both arms 15 and 15 are connected to the base end and the middle. Rods 16 and 17 that are connected to each other, and a guide rod (not shown) that projects downward from the rod 16 and is slidably fitted into a guide block (not shown) fixed to the base plate 13. As shown in FIG. 4, a cylinder 18 as an actuator that is vertically fixed to the base 13 is connected, and the jig 14 is guided to the guide block by the air cylinder 18 so as to move up and down and toward the base 13. It has come to advance and retreat.

  A pin 19 serving as a positioning means having a square cross section at its tip is fixed to the arms 15 and 15 of the jig 14 in a vertical direction with its lower end projecting downward from the arm 15. A bolt 21 is screwed laterally to the free end side from 19 and a bolt head 21a is a fixing means.

A stopper 22 is also mounted on the base plate so as to be able to rotate around a vertical axis. As shown in FIG. 6, the stopper 22 can be switched between a solid line position and a chain line position by rotation. When the position is switched to the solid line position, the bolt head position which is located on the base of the arm 15 of the jig 14 and which is raised by the air cylinder 18 is regulated and the raised position is regulated by the stopper 22. d ₁ the distance between the receiving frame 4 mounted on the weighing table _13, and the distance between the pin lower end and the receiving frame 4 and d _2, becomes d 2 _{<d 1,} Taiban leg 3a of the anchor 3 When inserted under the bolt head sideways, the leg end hits the lower end of the pin 19 even if it passes under the bolt head so that no further insertion is possible.

  When the stopper 22 is switched to the alternate long and short dash line position, the jig 14 is raised by the air cylinder 18 to widen the space between the bolt head 7a and the base 13 so that the receiving frame 4 can be easily taken out. .

  On both sides of the base plate 13, a fixing device 24 for the bolt 7 is provided on the front side of the base plate with a position shifted from the fixing device for the anchor 3 described above. As shown in FIG. 4, the fixing device 24 includes a vertical air cylinder 25 as a second actuator, and a receiving frame attached to the base plate 13 when the air cylinder 25 moves up and down and moves forward. 4 includes a presser block 27 as a second fixing means for pressing and fixing the head 7a of the bolt 7 inserted into the hole 26 formed in the hole 4.

  The switching of the switching valves of the air cylinders 18 and 25 and the switching of the stopper 22 are performed manually, but can be automated by being controlled by a controller.

  The present apparatus is configured as described above, and when the anchor leg 3a is welded onto the receiving frame with the receiving frame 4 mounted on the base plate 13 as shown in FIG. 4, the stopper 22 is set to the solid line position in FIG. After switching, the switching valve of the air cylinder 18 is switched to raise the jig 14 until the arm base hits the stopper 22 (FIG. 6). In this state, each leg 3a, 3a of the anchor 3 is inserted along the receiving frame and under the bolt head 21a, and each leg end is abutted against the pin 19 for positioning. After the positioning, the switching valve of the air cylinder 18 is switched to lower the jig 14, and the bolt head 21a receives and fixes the leg 3a of the anchor 3 onto the frame 4. After the positioning and fixing of the anchor 3 as described above is performed on the left and right sides of the receiving frame 4, the welding robot 11 sequentially welds the leg 3 a of the anchor 3 and the receiving frame 4.

  When welding the bolt 7 and the head 7 a to the receiving frame 4, the bolt 7 is inserted into the hole 26 formed in the receiving frame 4, and then the switching block of the air cylinder 25 is switched to raise the presser block 27. When raised to the upper limit position, the presser block 27 presses and fixes the bolt head 7a. After the bolts 7 are fixed on the left and right sides of the receiving frame 4 as described above, the welding robot 11 welds the bolt head 7 a and the receiving frame 4.

  The welding of the anchor 3 and the welding of the bolt 7 described above are programmed so that the welding robot 11 is sequentially performed, or the welding robot 11 is programmed to be performed separately for the welding of the anchor 3 and the bolt 7.

  The fixing device of the present invention is used to fix an anchor and / or a shock-absorbing bolt to a receiving frame for mounting a groove lid.

Sectional drawing of the side groove | channel which attached the groove cover to the receiving frame. The perspective view of the receiving frame which fixed the anchor and the volt | bolt. The layout of a welding robot and a fixing device. Sectional drawing of the fixing device which concerns on this invention. The top view of the fixing device. The side view of the principal part of the fixing device.

Explanation of symbols

3 .. Anchor 4.. Receiving frame 5. Groove cover 6. Shock absorber 7. Bolt 11. Welding robot 12. Anchor fixing device 13. Base 14. Jig 15. · · · Rods 18 and 25 · · Air cylinder 19 · · Pin 21 · · Bolt 21a · · Bolt head 22 · · Stopper 24 · · Bolt fixing device 26 · · Hole 27 · · Presser block

Claims (3)

  When welding an anchor embedded in concrete to a metal receiving frame with an L-shaped cross section that is attached to attach a groove lid to the upper step of the concrete side groove, the anchor is positioned and fixed to the receiving frame. A fixing device to be used, which is a base on which the receiving frame is mounted sideways, and engages with the end surface of the leg end on the receiving frame when welding the anchor leg to the receiving frame mounted on the base Positioning means for positioning the receiving frame, fixing means that can move forward and backward toward the base plate, and presses and fixes the leg portion of the anchor positioned by the positioning means to the receiving frame when moving forward, and the fixing means And an actuator for moving the head toward and away from the base.   2. The fixing according to claim 1, wherein the positioning means is supported by the fixing means and advances and retreats together with the fixing means, and the retreat thereof is restricted to a fixed amount by a stopper, and the anchor is positioned in this restricted state. apparatus.   A bolt for attaching a rubber or resin cushioning material to the contact surface with the groove lid for the purpose of preventing the groove lid from rattling with a metal groove lid receiving frame having an L-shaped cross section, which is attached to the side groove. A bolt fixing device for use in fixing by welding through a hole formed in the receiving frame, wherein the receiving frame is mounted sideways and the receiving frame mounted on the base is mounted on the receiving frame. A second fixing means that is capable of advancing and retreating when the bolt head is welded to the receiving frame through a hole opened in the receiving frame for mounting the cushioning material; And a second actuator for moving the fixing means forward and backward.

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