JP2008188636A - Level difference adjusting jig - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a jig that enables any one to easily adjust large members such as a longitudinal block so as to be flush with each other without difference in level and therefore contributes to increasing efficiency of welding work. <P>SOLUTION: A level difference adjusting jig 10 for use in adjusting members L1, L2 so as to be flush with each other without difference in level includes a main body 11 having a locking part 15 for restraining the member L1, a first fastening bolt 14a which is provided on one side of the main body and which clamps the member L1 in cooperation with the locking part of the main body, and a second fastening bolt 14b which is provided on the other side of the main body and which pressurizes the member L2 from above. This jig is fixed on the member L1 at a low surface position by being clamped between the fastening bolt 14a and the locking part of the main body. Then, the member L2 is lowered by a turning operation of the fastening bolt 14b, so that the surface of the member L2 is adjusted so as to be flush with the surface of the member L1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is a step used for the purpose of eliminating a step by making the surfaces of the two longi blocks the same surface when welding two longi blocks at a work site such as shipbuilding or a bridge. It relates to an adjustment jig.

As a jig for eliminating a step between two members to be joined and making the same surface, a jig described in Patent Document 1 has been proposed.
JP-A-8-189095

  However, the jig described in Patent Document 1 is used to hold the upper end surface of the building panel flush with the building panel as a target, and a hole for inserting the tip of the jig. The object is limited.

  When building large blocks such as L shape and T shape (called longi blocks) by welding at shipbuilding and bridge construction sites, even if each block material is lifted with a crane and transported to the welding work site, In general, the surfaces of the joints are not the same surface, and one of them is high and the other is low, resulting in a step. In order to eliminate this level difference and make it the same surface, a fine operation of the crane is required.

  Accordingly, an object of the present invention is to provide a jig that allows anyone to easily adjust a large member such as a long block to the same surface without a step, thereby improving the efficiency of welding work and the like. There is.

  In order to solve the above-mentioned problem, the present invention according to claim 1 is a step adjustment jig used for adjusting the first member and the second member to the same surface having no step, the first member A main body provided with a locking portion for locking the first member, a first tightening bolt provided on one side of the main body to clamp the first member by cooperation with the main body locking portion, and the other of the main body A second fastening bolt that is provided on the side and presses the second member from above, and is clamped between the first fastening bolt and the main body locking portion to be attached to the first member. The surface of the second member can be adjusted to the same surface as the surface of the first member by rotating the second tightening bolt in a fixed state.

  According to a second aspect of the present invention, in the step adjustment jig according to the first aspect, a tightening bolt cover is provided to surround each of the first and second tightening bolts, and the first member and the second member are provided. It is characterized in that foreign matter such as spatter generated when welding is adhered to the fastening bolt.

  According to a third aspect of the present invention, in the step adjusting jig according to the first or second aspect, a fastening pad is pivotally attached to the tips of the first and second fastening bolts via a retaining means. It is characterized by being.

  The present invention according to claim 4 is the step adjustment jig according to any one of claims 1 to 3, further comprising a lock mechanism that positions and locks the step adjustment jig with respect to the first member, and the lock mechanism Has a link that moves from an upper retracted position to a lower pressed position by a handle operation, a spring that assists the movement of the link with a spring force, and a pressing plate provided at the tip of the link. The first member is clamped between the stop portion and the pressing plate.

  According to the present invention, a first body that is provided on one side of the main body and includes a locking portion that locks the first member and clamps the first member by cooperation with the main body locking portion. And a step adjusting jig configured to have a second tightening bolt that is provided on the other side of the main body and presses the second member from above is provided. In the state clamped between the first clamping bolt and the main body locking portion and fixed to the first member, the surface of the second member is moved to the first member by rotating the second clamping bolt. Can be adjusted to the same plane as Therefore, anyone can easily perform the operation of adjusting large members such as long blocks to the same surface without a step, and the efficiency of welding operations can be improved.

  FIG. 1 shows a step adjustment jig 10 according to an embodiment of the present invention, wherein (a) is a front view thereof, (b) is a plan view thereof, and (c) is a side view thereof.

  The step adjusting jig 10 includes a plate-like clamp body 11 formed in a substantially U-shape or a substantially C-shape, and a plate-like arm joined so as to extend in a direction orthogonal to the clamp body 11. 12 and tightening bolts 14a and 14b that are screwed into nut portions 13a and 13b at both ends of the arm 12 and can be moved back and forth in the vertical direction.

  The lower end locking portion 15 of the clamp body 11 has a flat upper surface, and as will be described later, one of the two long blocks to be welded on the flat surface 16 (the one located below). Is supported.

  In addition, a handle 17 is fixed to the clamp body 11 by welding or the like so that the step adjustment jig 10 can be easily carried.

  Nested tightening bolt covers 18a and 18b are attached to the arm 12 below the nut portions 13a and 13b, respectively, so as to be extendable and retractable. Prevents adhesion to attached bolts.

  The lower ends of the tightening bolts 14a and 14b are formed in a spherical shape, and plate-shaped tightening pads 21a and 21b are pivotally attached to the spherical lower end portion 19 via a retaining ring 20.

  The operation and usage of the level difference adjusting jig 10 having the above configuration will be described with reference to FIGS. In this example, the jig 10 is used for level difference adjustment when welding the L-shaped longi blocks L1 and L2.

  The step adjustment jig 10 is set on the upper horizontal plane H1 near the joining end of the long blocks L1 and L2 that have been lifted and transported by a crane or the like (in this example, the long block L1). That is, with the upper end horizontal surface H1 of the long block L1 placed and locked on the flat surface 16 of the lower end locking portion 15 of the step adjustment jig 10, the tightening bolt 14a is rotated in the tightening direction, The clamping pad 21a at the lower end is pressed against the upper surface of the long block upper end horizontal surface H1, and firmly clamped between the lower end locking portion flat surface 16. Thereby, the level | step difference adjustment jig 10 is set with respect to the long block L1.

  Next, the opposite tightening bolt 14b is rotated in the tightening direction to press the lower end tightening pad 21b against the upper surface of the upper horizontal plane H2 of the other long block L2.

  The state at this time is shown in FIG. 2 and FIG. At this time, the level difference between the long blocks L1 and L2 has not yet been eliminated. Therefore, the fastening pad 21b is pressed against the upper end horizontal plane H2 of the upper longitudinal block L2 by the fastening bolt 14a held at a position fixed to the lower longitudinal block L1. The tightening bolt 14b in the raised state is at a relatively higher position (relaxed position), and the tightening bolt cover 18a is in a relatively extended state accordingly, whereas the tightening bolt cover 18b is in a relatively extended state. Is in a relatively contracted state.

  From this state, by further rotating the tightening bolt 14b in the tightening direction, the long block L2 gradually descends, so that the upper horizontal plane H2 is flush with the upper horizontal plane H1 of the long block L1. And the tightening of the tightening bolt 14b is completed. If the upper end horizontal surface H2 of the long block L2 becomes lower than the upper end horizontal surface H1 of the long block L1 because the tightening bolt 14b is rotated too much in the tightening direction, the tightening bolt 14b is rotated in the loosening direction. These upper end horizontal planes H1 and H2 are flush with each other. Thereby, since the level | step difference between the long blocks L1 and L2 is eliminated, the welding work in the welding line W can be performed smoothly.

  FIG. 4 shows a step adjustment jig 30 according to another embodiment of the present invention. The step adjustment jig 30 has substantially the same configuration as the above-described step adjustment jig 10, and its operation and usage are also substantially the same, but for maintaining the set state with respect to the longitudinal block L1 located below. A locking mechanism is provided.

  In this step adjustment jig 30, a clamp body 32 is formed by a pair of vertical plates 31, 31 formed in a substantially U-shape or a substantially C-shape and provided in parallel with a gap therebetween, The main part of the lock mechanism 40 is built in between the vertical plates 31 and 31 of the clamp body 32. The pair of vertical plates 31 and 31 are held in a state where a predetermined interval and parallelism are maintained by a connecting plate 34 at the lower end locking portion 33 and a bolt 35 at the upper side, and are fixed to the arm 36 by welding or the like. The upper surface 37 of the connecting plate 34 is a mounting surface for the long block. A handle 38 is rotatably attached to the bolt 35.

  The tightening bolts 14a and 14b are screwed into the nut portions 39a and 39b at both ends of the arm 36, respectively, so that the arm 36 can advance and retract in the vertical direction. The fastening bolts 14a, 14b and the parts / members related thereto are the same as those in the above-described embodiment, and thus the same reference numerals are given and the description thereof is omitted.

  The lock mechanism 40 is rotatable around a link pin 41 spanned between the vertical plates 31 and 31 of the clamp body 32, and has a link 43 (inside the vertical plates 31 and 31) with a pressing plate 42 pivotally attached to the tip. A cam 46 that rotates about the cam pin 45 by the operation of the handle 44, and a lock spring 47 that spans between the link 43 and the cam 46. 4 basically shows a state in which the lock mechanism 40 is released, but in FIG. 4C, the link 43 and the cam 46 in the locked state are indicated by phantom lines.

  Since one end of the cam 46 is locked to the stopper pin 48 when the lock mechanism 40 is in the released state, the link 43 and the pressing plate 42 attached to the tip thereof are shown by dotted lines in FIG. Thus, it is held at a position retracted upward.

  When the handle 44 is operated from this state to rotate the cam 46 about the cam pin 45 in the counterclockwise direction in FIG. 4C and move to the imaginary line position 46 ′, the link is generated by the elastic force of the lock spring 47. 43 rotates around the link pin 41 in the clockwise direction in the drawing and moves to the imaginary line position 43 ′, and the holding plate 42 ′ at the tip thereof is placed and locked on the upper surface 37 of the connecting plate 34. It is pressed against the upper end horizontal plane H1 of the block L1. In this way, when the step adjustment jig 30 is set at a predetermined position of the longe block L1 positioned below, the step adjustment jig 30 is positioned so as not to be detached from the longi block L1 via the lock mechanism 40. Can do.

  In this locked state, the tightening bolt 14a is tightened to fix the step adjustment jig 30 to the upper horizontal surface H1 of the long block L1, and then the tightening bolt 14b is tightened. Thus, the upper horizontal plane H2 of the other long block L2 is gradually lowered to be flush with the upper horizontal plane H1 of the long block L1.

It is the front view (a) of the level | step difference adjustment jig by one Embodiment of this invention, a top view (b), and a side view (c). In FIG. 1A, a portion related to the left fastening bolt is shown in cross section. It is the front view (a) and side view (b) which show an effect | action and usage when performing level | step difference adjustment of an L-shaped longi block using this level | step difference adjustment jig. FIG. 3 is a front view (a) showing the same state as FIG. 2 and a front view (b) showing a state in which a required operation is performed from this state to adjust (eliminate) the steps of the longi block. It is the front view (a) of the level | step difference adjustment jig by other embodiment of this invention, a top view (b), and a side view (c). In FIG. 4A, the part related to the left fastening bolt is shown in cross section. FIG. 4C shows the position where the right tightening bolt is most loosened and retracted upward.

Explanation of symbols

10 Step adjustment jig 11 Clamp body 14a, 14b Clamping bolt 15 Locking part 18a, 18b Clamping bolt cover 21a, 21b Clamping pad 30 Step adjustment jig 32 Clamp body 33 Locking part 40 Lock mechanism 42 Holding plate 43 Link 44 handle

Claims (4)

A step adjustment jig used to adjust the first member and the second member to the same surface without a step, and a main body provided with a locking portion for locking the first member, and one of the main bodies A first clamping bolt that clamps the first member by cooperating with the main body locking portion and a second that is provided on the other side of the main body and presses the second member from above The clamp bolt is clamped between the first clamp bolt and the main body locking portion, and is fixed to the first member by rotating the second clamp bolt. A step adjustment jig characterized in that the surface of the second member can be adjusted to the same surface as the surface of the first member. A fastening bolt cover is provided to enclose each of the first and second fastening bolts, and impurities such as spatter generated when the first member and the second member are welded adhere to the fastening bolt. The step adjustment jig according to claim 1, wherein the step adjustment jig is prevented. 3. The step adjusting jig according to claim 1, wherein a fastening pad is attached to the tip of each of the first and second fastening bolts via a retaining means so as to be pivotable. A lock mechanism for positioning and locking the step adjustment jig with respect to the first member is provided. The lock mechanism is a link that moves from the upper retracted position to the lower pressed position by a handle operation, and the movement of the link. The first member is clamped between the main body locking portion and the pressing plate, and includes a spring that assists the spring with a spring force and a pressing plate provided at the tip of the link. The level | step difference adjustment jig in any one of thru | or 3.

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