JP6896469B2 - Position adjustment shim - Google Patents

Description

The present invention relates to a position adjusting shim, and more particularly to a position adjusting shim used for adjusting the position of a counterweight of a construction machine.

In construction machines such as hydraulic excavators, a counterweight is attached to the rear of the machine in order to maintain the balance of the machine. Specifically, the counterweight is installed at the rear part of the main body frame constituting the main body portion of the construction machine, in a form of being placed on a pair of beam members extending rearward from the main body frame. In recent years, construction machinery is required not only to have high specifications but also to have a beautiful appearance. In that respect, the misalignment or inclination of the counterweight with respect to the engine room or the like may make it look unattractive and reduce its competitiveness in the market. Therefore, various techniques have been proposed to eliminate the misalignment and inclination of the counterweight.

The technique proposed in Patent Document 1 is a technique relating to a configuration in which a counterweight is bolted to a beam material constituting the main body frame and placed on the main body frame. Specifically, in this configuration, a through hole for passing a bolt is formed in the beam material extending rearward from the main body frame, and a bolt hole into which the bolt is screwed is formed as a through hole of the beam material on the lower surface of the counterweight. It is formed at the corresponding position. The bolt is passed through the through hole from the lower side of the beam material and screwed into the bolt hole of the counter weight to fix the counter weight to the beam material. In this configuration, a means for adjusting the gap formed between the counterweight and the main body frame and the cover is further provided. The means for adjusting the gap is to screw the bolt into the beam material next to the bolt for fixing the counterweight to the beam material, and to abut the tip of the bolt against the underside of the counterweight to determine the length of the bolt protruding from the beam material. I'm adjusting. The means for adjusting the gap adjusts the inclination of the counterweight with respect to the main body frame by adjusting the length of the bolt protruding from the beam material. Further, in this configuration, a shim is sandwiched in a gap formed between the counterweight and the beam material.

Japanese Unexamined Patent Publication No. 2008-75372

In the configuration proposed in Patent Document 1 above, the inclination of the counterweight with respect to the main body frame and the cover can be adjusted. However, since this configuration only adjusts the inclination of the counterweight with respect to the main body frame and the cover, it is not possible to accurately adjust the gap formed between the counterweight and the engine room. Therefore, it is difficult to meet the market demand for beautiful appearance of construction machinery. Further, since the bolt is screwed from the beam material and the tip of the bolt is abutted against the lower surface of the counterweight, the work of adjusting the inclination is hard work. Further, if the bolt is loosened, the inclination of the counterweight will change. The configuration proposed in Patent Document 1 has some of these problems.

The applicant has conventionally adopted a configuration in which both gaps formed between the counterweight and the main body frame and the cover can be adjusted. As shown in FIG. 5, for example, the counterweight 10 is fastened with a fixing element 50 to the rear portion of the side frame 41 located on the left and right sides of the main body frame 30 constituting the main body portion 2. A bracket 43 extending upward is provided at the rear portion of the side frame 41, and the counterweight 10 is fastened to the bracket 43 with a fixing element 50. Specifically, a plurality of holes 44, 45 penetrating in the front-rear direction of the main body 2 are formed vertically arranged above the bracket 43. On the other hand, the counterweight 10 is formed with bolt holes 11a and 11b at positions corresponding to the holes 44 and 45 of the bracket 43. After the counterweight 10 is placed on a beam material (not shown) extending rearward from the main body frame 30, the fixing element 50 is passed through the bracket 43, and the fixing element is passed through the bolt holes 11a and 11b of the counterweight 10. 50 is screwed in. At that time, at the position of each fixing element 50, the shim 200 is individually sandwiched between the bracket 43 and the counterweight 10. A washer 51 is provided between the bracket 43 and the head of the fixing element 50 to prevent the fixing element 50 from loosening.

A notch 201 is formed in the shim 200. A fixing element 50 is inserted into the notch 201. In the process of assembly, the shim 200 is hooked on the fixing element 50 by inserting the fixing element 50 into the notch 201. By being sandwiched between the bracket 43 and the counterweight 10, the shim 200 has a gap between the main body frame 30 and the cover (not shown) and the counterweight 10, and the inclination of the counterweight 10 with respect to the main body frame 30 and the cover. To adjust. That is, in this configuration, since a plurality of holes 44, 45 of the bracket 43 and bolt holes 11a, 11b of the counterweight 10 are provided vertically side by side, the shim 200 is sandwiched between the bracket 43 and the counterweight 10. Therefore, both the gap between the main body frame 30 and the cover and the counterweight 10 and the inclination of the counterweight 10 with respect to the main body frame 30 and the cover can be adjusted.

However, when assembling the counterweight 10 to the main body 2, the work of sandwiching the shim 200 at the position of each fixing element 50 is troublesome. Specifically, as shown in FIG. 5, in the process of attaching the counterweight 10, when the shim 200 is arranged at the position of the fixed element 50 and sandwiched, the shim 200 rotates around the fixed element 50, and the shim 200 will fall. Therefore, an adhesive or the like is used to adhere the shim 200 to the seating surface of the bracket 43 or the seating surface of the counterweight 10 to prevent the shim 200 from falling. As a result, time and effort were spent on the process of attaching the shim 200.

The present invention has been made to solve the above problems, and an object of the present invention is that the counterweight can be easily set when fixing the counterweight to the main body with a plurality of fixing elements, and the counterweight is dropped after being set once. The purpose is to provide a position adjustment shim that can suppress the movement.

The position adjustment shim according to the present invention for solving the above problems is the counterweight of the counterweight when the counterweight for maintaining the balance of the construction machine is attached to the main body of the construction machine by using a plurality of fixing elements. A position adjusting shim for adjusting the position and inclination with respect to the main body portion, which has a number of shim main bodies corresponding to the positions where the fixing element is used, and a connecting body for connecting the shim main bodies to each other. The shim body is formed with notches for inserting the fixing element and hooking the position adjusting shim on the fixing element, and the cuts formed in each shim body from the entrance of the notch toward the center side. It is characterized in that the extending directions of the notches coincide with each other.

According to the present invention, since the position adjusting shim is composed of the shim body and the connecting body as described above, a plurality of shims can be attached to the positions where the fixing elements are used at the same time. At that time, the shim body is formed with notches for inserting a fixing element such as a bolt to hook the position adjusting shim on the fixing element. Therefore, by hooking the position adjusting shim on the fixing element, the position adjusting shim is hooked on the fixing element. The shim body can be attached to the position of each fixing element. Further, it is possible to prevent the position adjusting shim from rotating around the fixed element and falling by hooking on the plurality of fixed elements. Further, since the extending directions of the notches formed in each shim body from the entrance to the center side are coincident with each other, when a plurality of shim bodies are arranged at the positions of the fixed elements, a plurality of shims are arranged. The shims can be hooked closer to the fixing element from the same direction, and the position adjustment shims can be easily attached.

In the position adjusting shim according to the present invention, the notch is formed so as to extend diagonally from a part of the periphery of the shim body.

According to the present invention, since the notch is formed so as to extend diagonally from a part around the shim body, when the position adjusting shim is attached to the position of the fixing element, the position is adjusted with respect to the position where the fixing element is used. The shim can be attached by moving it from diagonally above toward the fixed element. Therefore, the shim can be attached from the side of the bracket and the counterweight to which the counterweight is attached by the fixing element, and the position adjustment shim can be easily attached.

In the position adjusting shim according to the present invention, the adjacent shim bodies are the back side of the entrance of the notch of the shim body and the entrance of the notch with the center of the shim body of the other. A part of the periphery on the opposite side is connected by the connecting body.

According to the present invention, the adjacent shim bodies are formed on the back side of the entrance of the notch of one of the shim bodies and a part of the periphery opposite to the entrance of the notch across the center of the other shim body. Is connected by a connecting body, so that the fixing element can be inserted inside the notch and the position adjusting shim can be hooked on the fixing element without being disturbed by the connecting body.

In the position adjusting shim according to the present invention, the grip portion for holding by hand protrudes outward from the edge portion of the position adjusting shim.

According to the present invention, since the grip portion for holding by hand protrudes outward from the edge portion of the position adjusting shim, the grip portion is grasped by hand and the position adjusting shim is moved to the position where the fixing element is used. You can let it hook you. Therefore, the position adjustment shim can be easily attached.

According to the present invention, when fixing the counterweight to the main body with a plurality of fixing elements, the position adjustment shim can be easily set, and once the position adjustment shim is set at the position of the fixed element, it will come off. The position of the counterweight with respect to the main body can be adjusted by effectively suppressing it.

It is a side view of the hydraulic excavator which is an example of the construction machine to which the maintenance window opening / closing mechanism which concerns on this invention is applied. It is a top view of the position adjustment shim which concerns on this invention. It is explanatory drawing for demonstrating the form which sandwiches the shim with the bracket of the side frame provided on the left-right side of the main body frame, and the counter weight. It is explanatory drawing for demonstrating the process of attaching a position adjustment shim. It is explanatory drawing for demonstrating the form in which the conventionally used shim is sandwiched between the bracket of a side frame and a counterweight.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the present invention includes the invention of the same technical idea as the embodiment described below and the embodiment described in the drawings, and the technical scope of the present invention is limited to the description of the embodiment and the description of the drawings. Not a thing. The construction machine to which the present invention is applied is not particularly limited, but the hydraulic excavator 1 will be described below as an example.

[Overview of hydraulic excavator]
As shown in FIG. 1, the hydraulic excavator 1 is composed of a main body 2 and a work unit 15 extending outward from the main body 2. The main body 2 forms a lower portion thereof, and is composed of a traveling body 3 traveling on the main body 2 and a rotating body 7 capable of turning horizontally with respect to the traveling body 3. The traveling body 3 is mainly provided with a traveling frame 4, a crawler 5, and a motor 6 that transmits a driving force to the crawler 5. The swivel body 7 has an operator cabin 8 for the operator to sit down and operate the hydraulic excavator 1, an engine room 9 for internally providing an engine, hydraulic equipment, and the like, and for balancing the machine at the rear. A counter weight 10 is provided. On the other hand, the work unit 15 is composed of a boom 16 extending forward from the swivel body 7, an arm 17 supported by the tip of the boom 16, and a bucket 18 supported by the tip of the arm 17.

[Basic configuration of the present invention]
The position adjusting shim 20 according to the present invention is a counterweight when the counterweight 10 for maintaining the balance of the hydraulic excavator 1 is attached to the main body 2 of a construction machine such as the hydraulic excavator 1 by using a plurality of fixing elements 50. This is for adjusting the position and inclination of the 10 with respect to the main body 2. The position adjusting shim 20 has a number of shim bodies 21a and 21b corresponding to the positions where the fixing element 50 is used, and a connecting body 27 for connecting the shim bodies 21a and 21b to each other. Notches 22 for inserting the fixing element 50 and hooking the position adjusting shim 20 on the fixing element 50 are formed in the shim main bodies 21a and 21b, respectively. The extending directions of the notches 22 from the entrance 23 of the notches 22 formed in the shim bodies 21a and 21b toward the center C are in agreement with each other.

According to the present invention, when the counterweight 10 is fixed to the main body 2 by a plurality of fixing elements 50, the position adjusting shim 20 can be easily set, and the position adjusting shim 20 is once set to the position of the fixing element 50. When set to, the counterweight 10 can be effectively suppressed from falling off and the position of the counterweight 10 with respect to the main body 2 can be adjusted, which is a peculiar effect. Hereinafter, the specific configuration, mounting form, and operation of the position adjusting shim 20 will be described. In the description, the shim bodies 21a and 21b included in the position adjusting shim 20 according to the present invention are provided corresponding to the number of fixed elements 50, but in the following, the case where the number of fixed elements 50 is two is an example. I will explain.

[Position adjustment shim]
FIG. 2 shows an embodiment of the position adjustment shim 20. The position adjusting shim 20 has two shim bodies 21a and 21b, a connecting body 27 connecting the two shim bodies 21a and 21b to each other, and a grip portion 28 gripped by an operator or the like. The two shim bodies 21a and 21b are arranged at predetermined intervals. The distance between the two shim bodies 21a and 21b is the distance between the two holes 44 and 45 formed in the brackets 42 and 43 of the side frames 40 and 41, and the two bolt holes 11a formed in the counterweight 10. It corresponds to the interval of 11b. The outer shape of each shim main body 21a, 21b is not particularly limited, but the outer shape of the shim main bodies 21a, 21b in the example shown in FIG. 2 has a substantially quadrangular shape. However, the outer shape of the shim bodies 21a and 21b may be circular, for example. The shim bodies 21a and 21b are formed with notches 22 extending from a part of the periphery toward the center C, respectively. The notch 22 is composed of an introduction portion 24a formed from a part of the periphery toward the center C of the shim main bodies 21a and 21b, and a tip portion 24b formed in the center C of the shim main bodies 21a and 21b. ing. Both sides of the introduction portion 24a are parallel to each other and extend linearly. The tip portion 24b is formed in a semicircular shape. The introduction portion 24a and the tip portion 24b are integrally formed. The introduction portion 24a is a portion inside which a fixing element 50 such as a bolt is inserted into the center C from the periphery of the shim main bodies 21a and 21b. The inserted fixing element 50 is located inside the tip portion 24b at the center C of the shim bodies 21a and 21b.

The direction in which the notch 22 extends is inclined with a constant inclination angle θ with respect to the line L connecting the centers C of the shim main bodies 21a and 21b. The inclination angle θ formed by the direction in which the notches 22 formed in the two shim bodies 21a and 21b extend and the line connecting the shim bodies 21a and 21b is the same.

The connecting body 27 is a component that connects a plurality of shim bodies 21a and 21b. The connecting body 27 of the position adjusting shim 20 of the example shown in FIG. 2 connects two shim bodies 21a and 21b. Regarding the adjacent shim bodies 21a and 21b, the connecting body 27 sandwiches the inner side 25 of the entrance 23 of the notch 22 of one of the shim bodies 21a and the center C of the other shim body 21b, and the entrance 23 of the notch 22. It is connected to a part 26 of the periphery on the opposite side. The connecting body 27 has a band shape. One end of the connecting body 27 in the longitudinal direction is connected to the inner side 25 of the entrance 23 of the notch 22 of the shim body 21a located on the upper side of FIG. On the other hand, the other end of the connecting body 27 in the longitudinal direction is located on the opposite side of the center C from the periphery where the entrance 23 of the notch 22 of the shim body 21b located on the lower side of FIG. 2 is provided. It is connected to a part 26 of the surrounding area that forms the opposite side. In the connecting body 27, a predetermined region 27a on one shim body 21a, 21b side in the longitudinal direction thereof extends diagonally, and a region 27b between the predetermined region 27a and the other shim body 21a, 21b extends linearly. There is. The diagonally extending predetermined region 27a constitutes one of the side edges of the notch 22.

The shape of the connecting body 27 constituting the position adjusting shim 20 shown in FIG. 2 shows one example, and the shape of the connecting body 27 is such that the fixing element 50 is inserted inside the notch 22. There is no limitation as long as the shape does not hinder. For example, the connecting body 27 is formed in a straight line, is formed in a shape that is convexly curved on the right side of FIG. 2, is formed in a rectangular shape by being bent in a convex shape on the right side of FIG. 2, and so on. Can be in the shape of.

The grip portion 28 is a component for gripping the position adjusting shim 20 by hand, and protrudes outward from the edge portion of the position adjusting shim 20. In the position adjusting shim 20 of the example shown in FIG. 2, the grip portion 28 is configured to project outward from the right edge portion of the shim main body 21a located on the upper side of FIG. The position where the grip portion 28 is provided is not particularly limited, but it is easy to hook the position adjusting shim 20 on the two fixing elements 50 for connecting the brackets 42 and 43 of the side frames 40 and 41 and the counterweight 10. Therefore, it is desirable to provide the shim body 21a located on the upper side of FIG.

The thickness of the position adjusting shim 20 is preferably formed to be 1 mm or more and 4 mm or less. However, the position adjusting shim 20 is not limited to forming only one type of thickness, and it is preferable to provide a plurality of types having different thicknesses. For example, 1.2 mm, 1.6 mm, 2.3 mm and 3.2 mm position adjusting shims 20 may be provided. However, in addition to these four types of position adjustment shims 20, those formed to different types of thickness can be provided as needed. Such a position adjusting shim 20 is used in either a form in which only one sheet is used or a form in which a plurality of sheets are stacked, if necessary. When a plurality of sheets are stacked and used, the position adjusting shim 20 is used as necessary in either a form in which objects having the same thickness are used in layers or a form in which objects having different thicknesses are used in layers.

The position adjusting shim 20 having the configuration described above includes two holes 44, 45 formed in the brackets 42, 43 of the side frames 40, 41 and two bolt holes 11a, 11b formed in the counterweight 10. When connecting with the fixing element 50, the two shim bodies 21a and 21b of the position adjusting shim 20 can be hooked from the outer peripheral side of the fixing element 50 at the same time. Therefore, the position adjusting shim 20 does not rotate around the fixed element 50, and the position adjusting shim 20 does not fall.

The position adjustment shim 20 of the present invention has been described above by taking the position adjustment shim 20 provided with the two shim bodies 21a and 21b as an example. However, the shim body may be provided with three or more position adjusting shims 20 depending on the number of fixed elements 50 used.

[Form in which the position adjustment shim is sandwiched]
FIG. 3 shows a form in which the position adjusting shim 20 described with reference to FIG. 2 is sandwiched between the brackets 42 and 43 provided on the side frames 40 and 41 and the counterweight 10. As shown in FIG. 3, the hydraulic excavator 1 in which the position adjusting shim 20 is used includes a main body frame 30 provided in the center of the main body 2 in the left-right direction and side frames 40 provided on both left and right sides of the main body frame 30. , 41 and. In FIG. 3, the left side of the figure is the front part of the hydraulic excavator 1, and the right side of the figure is the rear part of the hydraulic excavator 1. Further, a counterweight 10 is attached to the rear portion of the hydraulic excavator 1.

Brackets 42 and 43 extending upward are provided at the rear portions of the side frames 40 and 41 on both the left and right sides, respectively. These brackets 42 and 43 are portions where the counterweight 10 is fixed by a fixing element 50 such as a bolt. Holes 44, 45 penetrating the hydraulic excavator 1 in the front-rear direction are formed in the brackets 42, 43 at two locations in the up-down direction. These holes 44 and 45 are portions through which the fixing element 50 is passed when the counterweight 10 is fixed to the brackets 42 and 43.

On the other hand, on the front surface of the counterweight 10, bolt holes 11a and 11b are formed on both sides at two positions, upper and lower. These bolt holes 11a and 11b are locations where the fixing element 50 is screwed in when the counterweight 10 is fixed to the brackets 42 and 43. The bolt holes 11a and 11b are formed in portions corresponding to the positions of the holes 44 and 45 formed in the brackets 42 and 43, respectively.

The position adjusting shim 20 is arranged between the rear surface of the brackets 42 and 43 and the front surface of the counterweight 10 when the brackets 42 and 43 and the counterweight 10 are fixed by the fixing element 50, and the brackets 42 and 43 and the counterweight 10 are arranged. It is sandwiched between 10 and 10. At that time, the shim body 21a located on the upper side is passed through the hole 44 on the upper side of the brackets 42 and 43, and is hooked on the fixing element 50 screwed into the bolt hole 11a on the upper side of the counterweight 10. On the other hand, the shim body 21b located on the lower side is passed through the lower hole 45 of the brackets 42 and 43 and is hooked on the fixing element 50 screwed into the bolt hole 11b on the lower side of the counterweight 10.

As the fixing element 50, for example, a bolt is used. The bolt as the fixing element 50 is passed through the holes 44 and 45 from the front side of the brackets 42 and 43. At that time, a washer 51 is arranged between the head of the bolt and the brackets 42 and 43. The washer 51 functions as a bolt loosening stopper.

[Details of the process of installing the position adjustment shim]
The details of the process of attaching the position adjustment shim 20 will be described with reference to FIG. First, as shown in FIG. 4A, the position adjusting shim 20 is moved from the upper side of the two fixing elements 50 for connecting the brackets 42 and 43 and the counterweight 10 toward the fixing element 50. The movement is performed by holding the grip portion 28 by hand. At that time, the notch 22 of the shim body 21a located on the upper side is directed to the fixing element 50 located on the upper side, and the notch 22 of the shim body 21b located on the lower side is directed to the fixing element 50 located on the lower side. Next, as shown in FIG. 4B, the position of the notch 22 of the shim body 21a located on the upper side is made to coincide with the position of the fixing element 50 located on the upper side. Similarly, the position of the notch 22 of the shim body 21b located on the lower side is aligned with the position of the fixing element 50 located on the lower side.

After that, as shown in FIG. 4C, the fixing element 50 is inserted inside the notch 22 of each shim body 21a and 21b, and the shim body 21a located on the upper side is hooked on the upper fixing element 50. The lower shim body 21b is hooked on the lower fixing element 50. Since the notches 22 of the shim main bodies 21a and 21b have the same inclination angle, the entrance 23 of the notch 22 of the shim main body 21a located on the upper side is aligned with the position of the fixing element 50 on the upper side, and is placed on the lower side. After aligning the entrance 23 of the notch 22 of the position shim body 21b with the position of the lower fixing element 50, simply move the entire position adjustment shim 20 downward, and the tip of each notch 22 is the innermost part. The fixing element 50 can be positioned on the portion 24b. Since the position adjustment shims 20 have a configuration in which the shim bodies 21a and 21b are hooked on the fixed elements 50, respectively. Therefore, in the form in which the shim bodies 21a and 21b are hooked on the fixed elements 50, the position adjustment shims 20 Does not rotate around the fixed element 50.

After the shim bodies 21a and 21b of the position adjusting shim 20 are hooked on the fixing elements 50, the fixing elements 50 are fixed. Specifically, when a bolt is used as the fixing element 50, the bolt is tightened. By fixing the fixing element 50, the position adjusting shim 20 is sandwiched between the rear surfaces of the brackets 42 and 43 and the front surface of the counterweight 10. The position adjusting shim 20 forms a gap between the rear surfaces of the brackets 42 and 43 and the front surface of the counterweight 10. The gap set here sets the size of the gap formed between the main body frame 30 and the cover (not shown) and the counterweight 10, and the inclination of the counterweight 10 with respect to the main body frame 30 and the cover. ing.

When fixing the fixing element 50, the size of the gap formed between the main body frame 30 and the cover and the counterweight 10 and the inclination of the counterweight 10 with respect to the main body frame 30 and the cover deviate from the preset values. If so, the position adjustment shims 20 having different thicknesses are sandwiched, or a plurality of position adjustment shims 20 are stacked and sandwiched to perform the adjustment. For example, when the gap formed between the main body frame 30 and the cover and the counterweight 10 is larger than the reference, the position adjustment shim 20 is changed to a thinner position adjustment shim 20 for adjustment. On the other hand, when the gap is smaller than the reference value, the position adjustment shim 20 is changed to a thick position adjustment shim 20 or the position adjustment shim 20 is used in an overlapping manner for adjustment.

As described above, when the position adjusting shim 20 of the present embodiment is used, when the counterweights 10 are attached to the brackets 42 and 43 provided on the left and right side frames 40 and 41 by the fixing element 50, two counterweights are used on each side. Since the position of the fixed element 50 can be adjusted by using only one position adjustment shim, the assembly process can be reduced as compared with the conventional case. Further, since the shim bodies 21a and 21b located above and below are used by hooking them on the fixing elements 50 used at the two places above and below, the position adjusting shim 20 does not rotate around the fixing element 50 and fall. .. Therefore, it is not necessary to attach or peel off the position adjusting shim 20 to the brackets 42, 43 or the counterweight 10 with an adhesive or the like. As a result, the position adjustment can be performed easily in a short time.

1 Excavator 2 Machine body 3 Running body 4 Running frame 5 Crawler 6 Motor 7 Swinging body 8 Operator cabin 9 Engine room 10 Counterweight 11a, 11b Bolt hole 15 Work unit 16 Boom 17 Arm 18 Bucket 20 Position adjustment shim 21a, 21b Shim body 22 Notch 23 Entrance 24a Introductory part 24b Tip part 25 Back side 26 Part of the periphery 27 Connecting body 28 Grip part 30 Body frame 40, 41 Side frame 42, 43 Bracket 44, 45 Hole 50 Fixing element 51 Washer

Claims (3)

When mounting with fixed elements counterweight to balance the construction machine to the main body of the construction machine, there in the position adjusting shim for adjusting the position and inclination relative to the main portion of the counterweight hand,
The position adjusting shim is sandwiched between a bracket extending upward on both left and right sides of the main body and the counter weight, and the bracket and the counter weight are tightened by the fixing element to tighten the bracket and the counter weight to the main body and the counter. The purpose is to adjust the gap formed between the weights and the inclination of the counterweight with respect to the main body.
It said position adjusting shim has two shims body vertical position corresponding to the position where the fixing element of the two at the right and left sides are used, and a connecting member for connecting the respective shim body together,
Wherein each shim body, cut for by inserting the anchoring element corresponding hooking the position adjustment shim to the fixing element outs are formed respectively,
The match from the entrance to lack the cut formed in the shim body wherein the direction mutual extension of the notch toward the center side of the shim body, the direction of the notch extends the centers of the respective shim body It is tilted with a certain tilt angle with respect to the line connecting
The connecting body has a strip shape, one end of the connecting body in the longitudinal direction is connected to the side portion of the notch entrance of the one said shim body, and the other end of the connecting body in the longitudinal direction is the other said shim body. A position adjustment shim characterized in that it is connected to the opposite side of the notch entrance. The notch is composed of an introduction portion formed toward the center of the shim body and a tip portion formed in the center of the shim body, and both side portions of the introduction portion are parallel to each other. The position adjusting shim according to claim 1 , wherein the introduction portion and the tip portion are integrally formed. The grip for holding by hand protrudes outward from the edge of the position adjustment shim.
The position adjustment shim according to claim 1 or 2.

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