JP4274853B2 - Hanging jig - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lifting jig used when a concrete secondary product such as a flume is lifted by a lifting means such as a crane and moved to a predetermined place.
[0002]
[Prior art]
Concrete flumes (1) such as FT flume and U-shaped flume used as irrigation canals and drainage canals are concrete secondary products formed by pouring concrete into a mold with a predetermined shape. As shown in the drawing, the upper surface is opened and the cross section in the width direction is formed in a U-shape, and a plurality of apertures (1b) used for lifting the side wall (1a) are provided at predetermined positions on the opposite side wall (1a). Is provided.
[0003]
Conventionally, when this flume (1) is lifted and installed at a predetermined site provided with a groove (2), a male screw (3a) is screwed at one end and an annulus (3b) at the other end. The hanging jig (3) formed with a male screw (3a) is inserted from the inside of the opening (1b) of the side wall (1a) of the flume (1) and positioned outside the opening (1b). Screw the nut (4) onto the side wall (1a) by screwing the nut (4), and wire rope (3b) to the ring part (3b) of the suspension jig (3) fixed to the side wall (1a). 5) was hung by a lifting means such as a crane (not shown). When the flume (1) is placed in the groove (2), the nut (4) is removed and the suspension jig (3) is removed from the opening (1b).
[0004]
At this time, the width of the groove (2) is sufficiently larger than the width of the flume (1), and there is a sufficient distance between the side surface of the groove (2) and the side wall (1a) of the flume (1), There is no problem if the depth from the ground surface to the opening (1b) of the flume (1) installed in the groove (2) is shallow, but the side of the flume (1) and the side wall of the flume (1) (1a ) Or if the depth from the ground surface to the opening (1b) of the flume (1) installed in the groove (2) is deep, the side of the groove (2) And the side wall (1a) of the flume (1), it becomes difficult for the operator to remove the nut (4) that secures the suspension jig (3) by inserting their hands. There was a problem that the tool (3) had to be cut and removed.
[0005]
As a technique that can solve this problem, as shown in FIG. 11, an axial core portion (101) having a locking portion (101a) formed at the tip portion, and one longitudinal end portion of the axial core portion (101). A suspension provided with a shackle mounting portion (102) provided with a contact plate (102a) having an outer diameter larger than the inner diameter of the opening (1b), and a shackle (103) attached to the shackle mounting portion (102) Using the jig (104), the shackle (103) is raised with the shaft core portion (101) inserted through the opening (1b), and the locking portion (101a) is moved to the outer end of the opening (1b). As shown in FIG. 12, a technique for lifting the flume (1) by abutting the edge plate and abutting the abutting plate (102a) against the side wall (1a), as shown in FIG. Using a hanging jig (108) having a pair of jig main bodies (106) formed with (105) and a support beam (107), each of the jig main bodies (106) is formed in the opening (1b) facing each other. Insert from the inside of the side wall (1a) In addition, a technique for supporting each jig main body (106) so as not to be detached from the opening (1b) by a support beam (107) spanned over each jig main body (106) (see, for example, Patent Document 2). )It has been known.
[0006]
In these technologies, the distance between the side surface of the groove (2) and the side wall (1a) of the flume (1) and the distance from the ground to the opening (1b) of the flume (1) installed in the groove (2). Regardless of the depth, the hanging jigs (104) and (108) can be attached to and detached from the opening (1b).
[0007]
However, in the former technique, when the lifting jig (104) is attached to the flume (1) and lifted, the locking portion between the locking portion (101a) and the outer edge of the aperture (1b) and the contact There is a problem that stress concentrates on the abutting portion between the plate (102a) and the side wall (1a), and cracks may occur in these portions.
[0008]
On the other hand, in the latter technique, it is not economical because it is necessary to prepare a plurality of support beams (107) corresponding to the width of the flume (1) to be lifted, and it corresponds to the width of the flume (1) every time it is lifted. There was a problem that the support beam (107) had to be selected and was not efficient.
[0009]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-278352 (2nd page, FIG. 3)
[0010]
[Patent Document 2]
Japanese Patent Laid-Open No. 11-322256 (page 2-3, FIG. 9)
[0011]
[Problems to be solved by the invention]
Therefore, the main problem of the present invention is a suspension treatment that can be easily attached to and detached from a concrete flume, etc., and can be safely installed even in a small installation area without damaging the flume. Is to provide the ingredients.
[0012]
[Means for Solving the Problems]
According to the first aspect of the present invention, “when a concrete flume (14) or the like is lifted, the flume (14) is inserted into an opening (14b) formed in a side wall (14a) and used. A hanging jig comprising: (a) a cylindrical casing (16a); a plate-like abutting portion (24) provided at one end in the longitudinal direction of the casing (16a) and contacting the flume (14); A suspension part body (26) having a suspension part (26) standing on the outer peripheral surface of 16a) and having a suspension ring (26a) formed therein, and a guide long hole (28) formed along the longitudinal direction of the casing (16a) ( 16), (b) It is inserted into the suspension body (16) so as to be able to advance and retract, and is pivotally attached to the insertion end (30) inserted into the opening (14b) by a pivot shaft (44). A locking member (22), a male screw portion (32) screwed in the rear direction from the center in the longitudinal direction, and a pin (34) slidably engaged with the guide slot (28). Shaft (18), And (c) When the flume (14) is held between the locking member (22) and the abutting portion (24) by screwing with the male screw (32), the suspension body (16) is displaced in the loosening direction. (D) The lock member (22) has a weight (Y) on the front end side with respect to the pivot shaft (44) and the rear end side (X) of the pivot shaft (44). ) And a rotation stopper provided at the rear end of the lock member (22) on the shaft (18) when the lock member (22) is coaxial with the shaft (18). An engagement portion (40) that is engaged with 30a) and is restricted from rotating in one direction is provided. "
[0013]
In this invention, first, when the suspension jig (10) is positioned so that the suspension part (26) is below the suspension part body (16), the tip side (Y) is heavier than the pivot shaft (44). Thus, the lock member (22) attached to the insertion-side tip (30) of the shaft (18) tends to rotate with its tip downward. At this time, since the engaging portion (40) engages with the rotation stopper (30a) to restrict the rotation of the lock member (22), the central axis of the shaft (18) and the central axis of the lock member (22) are Coaxial direction. Therefore, the lock member (22) and the notch (30) at the tip of the shaft (18) can be inserted into the opening (14b) provided in the side wall (14a) of the concrete secondary product or the like.
[0014]
Subsequently, the locking member (22) of the hanging jig (10) and the insertion side tip (30) of the shaft (18) positioned so that the hanging portion (26) is located below the hanging portion main body (16). After passing through the opening (14b) and turning the suspension body (16) so that the suspension (26) faces upward, the shaft (via the pin (34) engaged with the guide slot (28) The rotational force is transmitted to 18), and the shaft (18) also rotates with the rotation of the suspension body (16). Then, the lock member is attached so that the front end side (Y) is heavier than the pivot shaft (44), and the engaging portion (40) is formed on the rear end side (X) from the pivot shaft (44). (22) rotates in a direction to release the engagement between the engagement portion (40) and the rotation stopper (30a), and the central axis of the shaft (18) and the central axis of the lock member (22) are substantially orthogonal to each other. It becomes like this.
[0015]
Then, in this state, the abutting portion (24) of the suspension portion main body (16) and the side surface of the lock member (22) are brought into contact with the side wall (14a) such as the flume (14) from both sides to hold it. In addition, a suspension body (16) and a lock member (22), which have a side wall (14a) such as a flume (14) held by screwing a restriction nut (20) into the male thread portion (32) of the shaft (18), Fix so that does not move in the loosening direction.
[0016]
This prevents the hanging jig (10) from dropping off from the opening (14b) when the flume (14) or the like is lifted, and at a specific part of the opening (14b) or the side wall (14a). Since the stress is not concentrated, it is possible to prevent damage to the flume (14) associated with lifting work such as cracks.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments according to the present invention will be described below with reference to the drawings. The suspension jig (10) of one embodiment of the present invention (FIGS. 1 to 7) is particularly suitable for lifting a flume (14) installed in a groove (12) and used as a water channel or a drainage channel. It is attached to the opening (14b) provided in the side wall (14a) of the flume (14), and is attached to the hanging body (16), the shaft (18), the regulating nut (20), the lock member (22), etc. It is configured.
[0018]
The suspension body (16) has a cylindrical casing (16a), and a suspension jig (10) is attached to the opening (14b) of the flume (14) at one end in the longitudinal direction of the casing (16a). At this time, a plate-like butting portion (24) that abuts against the side wall (14a) is fixed. An elastic material (24a) such as urethane rubber is provided on the surface of the butting portion (24) that contacts the side wall (14a) of the flume (14) so as not to damage the side wall (14a) of the flume (14). A pad (24b) to which is attached or baked is attached in a replaceable manner with a screw (24c). For this reason, when the elastic material (24a) of the pad (24b) is damaged, the pad (24b) can be replaced immediately.
[0019]
In addition, a hanging portion (26) having a hanging ring (26a) is projected from the outer peripheral surface of the casing (16a), and further, at a position opposite to each other on the outer peripheral surface of the casing (16a), A set of long slot-shaped guide slots (28) extending along the axis are formed.
[0020]
The shaft (18) is a long bar-like member disposed so as to be able to advance and retreat in the casing (16a) of the suspension part main body (16).
[0021]
The shaft (18) has an insertion-side tip (30) cut out on both sides, inclined with respect to the central axis of the shaft (18), and its hypotenuse toward the suspension (26). A rotation stopper (30a) having a slanted slope is formed, and a male thread portion (32) is screwed from the center in the longitudinal direction toward the rear. Note that a shaft stop hole (not shown) through which a pivot shaft (44) to be described later is inserted has a shaft stop (30) on the insertion side tip (30) of the shaft (18) on which the rotation stopper (30a) is formed. A hole is formed so as to be substantially orthogonal to the axial direction of 18).
[0022]
The side surface of the shaft (18) between the insertion end (30) on the insertion side of the shaft (18) and the male screw portion (32) is slidably engaged with the guide slot (28). A pair of pins (34) that guide the advance and retreat of (18) and restrict the rotation of the shaft (18) are attached. In addition, a disc-shaped stopper member (36) is screwed to the end (i.e., the rear end) of the shaft (18) on the side opposite to the insertion end (30) to prevent the regulation nut (20) from falling off. Stopped at (38).
[0023]
The restricting nut (20) is screwed into the male threaded portion (32) of the shaft (18), so that the suspension body (16) is not displaced in the loosening direction of the male threaded portion (32). It is something to regulate.
[0024]
The lock member (22) is a short bar-like member that comes into contact with the side wall (14a) of the flume (14) when the hanging jig (10) is attached to the opening (14b) of the flume (14). The side wall (14a) of the flume (14) is held in cooperation with the abutting portion (24) described above.
[0025]
On the one end side from the longitudinal center of the lock member (22), the width direction meat is cut out along the central axis of the lock member (22), and the insertion side tip (30) of the shaft (18) is desorbed. An engaging portion (40) having a slope that is inclined with respect to the central axis and is engaged with and disengaged from the rotation stop (30a) of the shaft (18) is formed on both side surfaces of the tip on one end side. Has been.
[0026]
Further, a pivot attachment hole (42) is penetrated through the central portion in the longitudinal direction of the lock member (22) so as to be orthogonal to the central axis of the lock member (22).
[0027]
Then, a pivot shaft (44) is inserted into the pivot hole (42) and a shaft stop hole (not shown) at the insertion side tip (30) of the shaft (18). A member (22) is rotatably attached to the insertion end (30) of the shaft (18) with the pivot shaft (44) as a fulcrum (P). The pivot shaft (44) that connects the shaft (18) and the lock member (22) is fixed by a retaining screw (46) so as not to fall out of the pivot hole (42) and the pivot stop hole. .
[0028]
Here, the lock member (22) attached to the insertion side tip (30) of the shaft (18) by the pivot shaft (44) is engaged with the rotation stop (30a) of the shaft (18). (40) is provided on one end in the longitudinal direction, i.e., the rear end (X) of the pivoting shaft (44) is cut away, so that the fulcrum (P) is at the longitudinal center of the lock member (22). Although provided, it is attached so that the weight on the tip side (Y) is heavier than the pivot shaft (44). For this reason, the lock member (22) always tries to rotate so that the tip end side (Y) is directed downward from the pivot shaft (44), that is, the fulcrum (P), from the weight distribution. However, the insertion-side tip portion (30) of the shaft (18) is inclined with respect to the central axis of the shaft (18), and the inclined side thereof has a slope inclined toward the suspension portion (26) side. Since the stopper (30a) is provided, when the suspension part (26) is positioned so as to be on the lower side of the suspension part body (16), the lock member (22) is located on the tip side (from the pivot shaft (44)). Y) rotates so that it faces downward, but the engaging part (40) of the locking member (22) engages with the rotation stop (30a) of the shaft (18) and locks with the central axis of the shaft (18). The lock member (22) is prevented from rotating at a position where the central axis of the member (22) is coaxial.
[0029]
On the contrary, if the suspension part (26) is positioned so as to be on the upper side of the suspension part main body (16), the lock member (22) is lower on the tip side (Y) than the pivot shaft (44). Since the engagement portion (40) and the rotation stopper (30a) are disengaged, the lock member (22) becomes rotatable, and the pivot shaft (44) of the lock member (22) is rotated. ), The front end side (Y) faces downward, that is, the central axis of the shaft (18) and the central axis of the lock member (22) become substantially orthogonal.
[0030]
Referring to FIG. 8, when lifting the flume (14) using the hanging jig (10) of the present invention, first, the stopper member (36) attached to the rear end of the shaft (18) is the hanging body. The shaft (18) is pushed toward the suspension body (16) so as to be close to (16), and positioned so that the suspension (26) is on the lower side of the suspension body (16). Then, the locking member (22) attached to the insertion side tip (30) of the shaft (18) with the pivot shaft (44) so that the tip side (Y) is heavier than the pivot shaft (44). Try to rotate the tip side (Y) downward. However, since the engaging portion (40) engages with the rotation stopper (30a) and restricts the rotation of the locking member (22), the central axis of the shaft (18) and the central axis of the locking member (22) are coaxial. In other words, the shaft (18) and the lock member (22) are flush with each other (FIG. 8 (A)).
[0031]
Subsequently, the insertion member tip (30) of the locking member (22) and the shaft (18) of the hanging jig (10) positioned as described above is inserted into the opening (14b) of the flume (14), and The pad (24a) of the abutting part (24) is arranged so as to contact the side wall (14a) around the opening (14b) (FIG. 8 (B)), and the hanging part (26) faces upward. The suspension body (16) is rotated (FIG. 8 (C)). Then, at this time, the rotational force is transmitted to the shaft (18) through the pin (34) engaged with the guide slot (28), and the shaft (18) also rotates as the suspension body (16) rotates. The lock member (22) attached so that the tip side (Y) is heavier than the pivot shaft (44) rotates in a direction to release the engagement between the engagement portion (40) and the rotation stopper (30a). The central axis of the shaft (18) and the central axis of the lock member (22) become substantially orthogonal.
[0032]
Then, the stopper member (36) at the rear end of the shaft (18) is attached to the hanging portion with the butting portion (24) of the hanging portion main body (16) kept in contact with the side wall (14a) of the flume (14). The shaft (18) is pulled away from the main body (16), and the side wall (14a) of the flume (14) is held between the abutting portion (24) and the side surface of the lock member (22) (FIG. 8 (D )), So that the hanger body (16) and the lock member (22), which hold the side wall (14a) by screwing the restriction nut (20) onto the male screw part (32) of the shaft (18), will not be displaced. Fix (FIG. 8E).
[0033]
Thus, as shown in FIG. 1, after hanging the wire (50) etc. on the hanging ring (26a), the lifting means such as a crane (not shown) is used to lift the flume (14) and move it. Can do.
[0034]
When removing the hanging jig (10) attached to the opening (14b) of the flume (14), the above procedure may be reversed.
[0035]
Specifically, as shown in FIG. 9, first, the regulating nut (20) screwed into the male screw portion (32) is removed (FIG. 9 (A)), and the stopper member (36) is attached to the suspension body (16). The shaft (18) is pushed toward the suspension body (16) side (i.e., the side wall (14a) side) so as to be close to the locking member (22) and the opening (14b) that are in contact with the side wall (14a). ) And the insertion side tip (30) of the shaft (18) located in the inner space is separated from the opening (14b) (FIG. 9 (B)).
[0036]
Subsequently, the suspension part body (16) is rotated so that the suspension part (26) of the suspension part body (16) faces downward. At this time, since the pin (34) engaged with the guide elongated hole (28) transmits the rotational force of the suspension body (16) to the shaft (18), the shaft (18 ) Also rotates. Then, the locking member (22) attached to the insertion side tip (30) of the shaft (18) tries to rotate the tip side (Y) downward from the pivot shaft (44). (40) engages with the rotation stopper (30a) to restrict the lock member (22) from rotating further, and the shaft (18) and the lock member (22) are flush with each other (FIG. 9). (C)).
[0037]
Then, in this state, the suspension body (16) is separated from the side wall (14a) of the flume (14), and the notch (30) and the lock member (30) of the shaft (18) inserted through the opening (14b) ( 22) is pulled out, the suspension jig (10) can be removed from the opening (14b) of the flume (14) (FIG. 9 (D)).
[0038]
According to the present embodiment, the lock member (22) attached to the tip of the shaft (18) can be simply operated by displacing the position of the suspension part (26) of the suspension part body (16) upward or downward. The direction can be changed, the distance between the side surface of the groove (12) and the side wall (14a) of the flume (14), and the opening (14b) of the flume (14) installed in the groove (12) from the ground surface The hanging jig (10) can be attached to and detached from the opening (14b) regardless of the depth.
[0039]
In addition, the hanging jig (10) can be attached to and detached from the opening (14b) of the flume (14) even if the distance between the side surface of the groove (12) and the side wall (14a) of the flume (14) is short as described above. Therefore, when the flume (14) is lifted and loaded on the truck bed to transport the flume (14), the flume (14) can be loaded on the truck bed without any gaps. When the hanging jig (10) is used as it is when lowering from the loading platform to the material storage, the flume (14) lowered from the loading platform can be placed in the material storage without any gap. For this reason, a flume (14) can be conveyed and stored efficiently.
[0040]
Further, the restriction nut (20) is screwed into the male thread portion (32) of the shaft (18) to hold the side wall (14a) of the flume (14) and the lock member (22). Is fixed so as not to be displaced in the loosening direction, so that the suspension jig (10) can be prevented from falling off from the opening (14b) of the flume (14).
[0041]
Further, the abutting portion (24) and the side surface of the lock member (22) abut against and hold the side wall (14a) of the flume (14), so that the opening (14b) and the side wall (14a) The stress is not concentrated on the specific portion of the film, and it is possible to prevent the flume (14) from being damaged due to lifting work such as cracks.
[0042]
Therefore, it can be attached to and detached from the flume (14) by a simple operation, and these can be safely installed in the groove (12) having a small installation area without damaging the lifting flume (14). .
[0043]
In the above-described embodiment, a pair of guide long holes (28) are provided at positions facing each other of the suspension body (16), and a pin (34) is engaged with each guide long hole (28). As an example, if the pin (34) is engaged with the guide long hole (28) and the rotation of the shaft (18) can be restricted, the guide long hole (28) and the pin ( The number of 34) is not limited to this, and, for example, one guide slot (28) and one pin (34) may be provided.
[0044]
Further, as the rotation stopper (30a) provided at the insertion side tip (30) of the shaft (18), the meat on both sides of the shaft (18) is cut out, inclined with respect to the central axis of the shaft (18), and Although the oblique side has a slope inclined toward the suspension part (26) side, the rotation stopper (30a) is engaged with the engagement part (40) of the lock member (22) to lock the lock member ( 22) Prevents rotation in one direction, and when the suspension part (26) is positioned above the suspension part body (16), the central axis of the shaft (18) and the central axis of the lock member (22) are coaxial. The shape may be any shape as long as it can be held by, for example, the width direction (vertical direction) of the insertion-side distal end portion (30) along the central axis of the shaft (18) although not shown. Or a concave shape having a slope inclined with respect to the central axis of the shaft (18) and the inclined side inclined toward the suspension (26) side, or one of the lock members (22). Be those protruding for restricting the rotation of the direction may be. Needless to say, if the shape of the rotation stopper (30a) changes, the shape of the locking portion (40) of the lock member (22) also changes accordingly.
[0045]
In the above example, the example of lifting the flume (14) having a U-shaped cross section using the hanging jig (10) of the present invention is shown. However, the object using the hanging jig (10) of the present invention is this. For example, any shape may be used as long as it has an opening in the side wall, such as an L-shaped groove having an opening in the side wall, and the material is concrete. Any material may be used as long as it is heavy, such as a metal one as well as a metal one.
[0046]
【The invention's effect】
According to the present invention, the hanging jig can be attached to and detached from the opening provided in the flume only by a simple operation of displacing the hanging portion of the hanging portion main body upward or downward.
[0047]
In addition, when the suspension jig is attached to the opening, a restriction nut is screwed onto the male threaded portion of the shaft so that the suspension body holding the flume side wall and the lock member are not displaced in the loosening direction. Since it is fixed, it is possible to prevent the suspension jig from dropping from the opening of the flume.
[0048]
And since the abutting part and the side surface of the lock member abut against the side wall of the flume and hold it, the stress is not concentrated on the opening or a specific part of the side wall, and the concrete secondary product accompanying the lifting work Can be prevented from being damaged.
[0049]
Therefore, it is possible to attach and detach to / from concrete secondary products such as flume by simple operation, and to suspend these components in a small installation area without damaging the concrete secondary products to be lifted. Tools can be provided.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a usage mode of a hanging jig according to an embodiment of the present invention.
FIG. 2 is a front view showing a hanging jig according to an embodiment of the present invention.
FIG. 3 is a top view showing a hanging jig according to an embodiment of the present invention.
FIG. 4 is a bottom view showing a hanging jig according to an embodiment of the present invention.
FIG. 5 is a right side view showing a hanging jig according to an embodiment of the present invention.
FIG. 6 is a left side view showing a hanging jig according to an embodiment of the present invention.
7 is a cross-sectional view taken along line AA in FIG.
FIG. 8 is an explanatory view showing a method of using the hanging jig according to one embodiment of the present invention (when mounted).
FIG. 9 is an explanatory view showing a method of using the hanging jig according to one embodiment of the present invention (during attachment / detachment).
FIG. 10 is an explanatory view showing an aspect of a conventional hanging jig.
FIG. 11 is an explanatory view showing another aspect of a conventional hanging jig.
FIG. 12 is an explanatory view showing another aspect of a conventional hanging jig.
[Explanation of symbols]
(10) ... Hanging jig
(12) ・ ・ ・ Groove
(14) ... Flume
(14a) ・ ・ ・ side wall of flume
(14b) ・ ・ ・ Open hole
(16) ... Hanging body
(16a) ... Casing
(18) ・ ・ ・ Shaft
(20) ... Regulator nut
(22) ・ ・ ・ Lock member
(24) ・ ・ ・ Abutting part
(26) ・ ・ ・ Hanging part
(26a) ... Suspension ring
(28) ・ ・ ・ Guide slot
(30) ・ ・ ・ Inserting tip
(30a) ・ ・ ・ Rotation stop
(32) ... Male thread
(34) ・ ・ ・ Pin
(36) ・ ・ ・ Stopper member
(38) ・ ・ ・ Screw
(40) ... engaging part
(42) ・ ・ ・ Pivoting hole
(44) ・ ・ ・ Pivoting axis
(46) ・ ・ ・ Retaining screw
(P) ... fulcrum

Claims (1)

When lifting concrete flume, etc., it is a hanging jig that is used by being inserted into an opening formed in a side wall of the flume, etc.
(A) a cylindrical casing, a plate-like abutting portion that is provided at one end in the longitudinal direction of the casing and abuts on the flume, a suspension portion that is erected on the outer peripheral surface of the casing and has a suspension ring formed thereon, A suspension body having a guide slot formed along the longitudinal direction of the casing,
(B) a locking member that is inserted into the suspension body so as to be able to advance and retreat, and is pivotally attached to an insertion-side distal end that is inserted into the opening, by a pivot shaft; A shaft having a male screw portion screwed on the shaft and a pin slidably engaged with the guide long hole, and (c) screwing the male screw into the locking member and the abutting portion. Comprising a regulating nut that regulates the displacement of the hanging body in the loosening direction when held
(D) The lock member is formed such that the weight at the tip side from the pivot shaft is heavier than the weight at the rear end side from the pivot shaft, and the lock member is coaxial with the shaft. A suspension jig characterized in that an engagement portion is provided in which the rear end of the lock member is sometimes engaged with a rotation stop provided on the shaft to restrict rotation in one direction.

Images