JP2005324635A - Bush attaching/detaching device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bush attaching/detaching tool which is operated by one person, capable of reliably and easily aligning a bush, attaching/detaching all kinds of bushes used for large vehicles, and attaching/detaching the bush without detaching a stabilizer assembly from an on-vehicle state. <P>SOLUTION: The bush attaching/detaching tool has pressing means 1-3, a drawing tool body 4, a pressing piece 6 and a receiving piece 7. The pressing means 2 is fixed to one end 411 of the drawing tool body 4. When an attached/detached bush 20 is detached from a bush storage member 12a, or when the bush is press-fitted into the bush storage member 12a, the pressing piece 6 is mounted on a tip 2R of the pressing means 2, the receiving piece 7 is mounted on the other end 412 of the drawing tool body 41 so as to receive the reaction force, the bush storage member 12a is mounted on the receiving piece 7, and an end face in the axial direction of an outer cylindrical part 22 of the bush 20 is pressed by the pressing means 2 via the end face of the pressing piece 6 to attach/detach the bush 20. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a bush detaching device for detaching a bush press-fitted into an arm portion such as a stabilizer used in a vehicle suspension system.

  As shown in FIG. 14, a vehicle or the like having an air suspension is equipped with a stabilizer 10 in order to prevent rolling that occurs during turning.

  As shown in FIG. 15, the stabilizer 10 includes a tubular torsion bar 11, a pair of arms 12 having one end fixed to both ends of the torsion bar 11, and the other end of the arm 12. And a bush 20 press-fitted into the cylindrical bush housing member 12a.

  As shown in detail in FIGS. 16 and 17, the bush 20 has an elastic body (rubber) 23 interposed between an outer cylinder portion 21 and an inner cylinder portion 22 each made of steel, and the inner cylinder portion. The pin 24 is fitted to the inner diameter of the 22.

  Referring again to FIG. 14, when the stabilizer 10 is attached to the vehicle, the pin 24 of the bush 20 is brought into contact with the tip of the suspension bracket 15 attached to the frame C of the vehicle, and the end of the pin 24 and the bracket 15. Are fastened by means of a mounting bolt and a nut BN that pass through the same.

  Here, the elastic body 23 of the bush 20 will eventually reach the end of its life as a result of long-term running of the vehicle and must be replaced.

  Conventionally, in such replacement of the bush 20, the pin 24 is removed from the suspension bracket 15, the entire stabilizer 10 is removed from the vehicle (axle) A, and it is carried to a removal tool such as a press, where the removal work of the bush 20 is performed. I was going. Therefore, it is necessary to remove and transport the entire stabilizer, and it is difficult to do the work due to its shape. It requires a lot of labor and man-hours. Also, because of unstable work, two people work. Attention was necessary.

  Conventionally, a tool for removing and attaching such a bush has been disclosed (for example, see Patent Document 1). However, the technique (tool) uses a screw to attach and detach the bush, and requires a lot of labor, and cannot solve the above problems.

In addition to the above, there is a tool that uses an in-vehicle jack as a bushing removal tool, but the in-vehicle jack is originally used by operating in the vertical direction, and the bush is engaged with the tip of a long arm like a stabilizer. If it must be operated laterally in order to be removed, sufficient capacity cannot be obtained. That is, the work of holding the in-vehicle jack sideways, operating the pressure lever, and aligning the cores is difficult.
JP 2001-71279 A

  Accordingly, the object of the present invention is to enable one person to work, to reliably and easily center the bush, and to attach and detach all the bushes used in large vehicles, and in particular, without removing the stabilizer assembly from the on-vehicle state. It is to provide a bushing removal tool that can perform bushing removal work.

  The bush detaching device of the present invention is a bushing detaching device for detaching a bush (20) press-fitted into an arm portion (12) such as a stabilizer (10) used in a vehicle suspension system. -3), a punching jig body (4), a press fitting (6), and a receiving bracket (7), and the pressing means (2) is fixed to one end (411) of the punching jig body (4). The pressing metal fitting (6) is attached to the tip (2R) of the pressing means (2), and the receiving metal fitting (7) receives a reaction force on the other end (412) of the punching jig body (4). The bracket (7) is configured to be able to mount a bush housing member (12a), and the pressing bracket (6) is attached to the outside of the bush (20) by the pressing means (2). It is configured to press the axial end face of the tube part (21) It is characterized in Rukoto (claim 1).

  The pressing means (1-3) are constituted by an air-driven hydraulic pump (1), a hydraulic cylinder (2), the air-driven hydraulic pump (1), and a hydraulic hose (3) communicating with the hydraulic cylinder (2). (Claim 2).

  Here, there is a large difference in the required stroke of the hydraulic cylinder (2) between when the bush (20) is removed and when the bush (20) is press-fitted. Therefore, in order to fill this difference, a connecting member (5) is interposed between the pressing means (2) and the press fitting (6).

  The extraction jig body (4) has a reaction force receiving portion (41) and a reaction force receiving portion mounting means (42) for mounting the reaction force receiving portion (41). ) In the rotational direction and axial movement are allowed (claim 4).

  The extraction jig body is mounted on a movable carriage (8) having casters (82) at the four corners of the lower surface so as to allow the removal of the bush and the movement of the jig body (Claim 5).

According to the bush detaching device of the present invention having the above-described configuration, when the detachable bush (20) is removed from the bush accommodating member (12a), or the detachable bush (20) is press-fitted into the bush accommodating member (12a). In order to do this, the pressing metal fitting (6) is attached to the tip (2R) of the pressing means (2), and the receiving metal fitting (7) is subjected to a reaction force on the other end (412) of the reaction force receiving part (41). The bush receiving member (12a) is attached to the metal fitting (7), and the axial end surface of the outer cylindrical portion (21) of the bush (20) is connected to the metal fitting (7) via the end surface of the push metal fitting (6). Pressing with pressing means (2). Thereby, the said bush (20: to-be-removed bush) can be attached or detached with respect to a bush accommodating member (12a).
As described above, according to the bush detaching device of the present invention, the air-driven hydraulic pump (1) and the hydraulic cylinder (2) operated by the air-driven hydraulic pump (1) are used as the pressing means. In the embodiment, a pressing force of 35 tons is obtained, and all the press-fitting bushes for large vehicles can be attached and detached.

  For removing the bush, an increase in the stroke of the pressing means (hydraulic cylinder 2) is prevented by interposing a connecting member (5) between the pressing means (hydraulic cylinder 2) and the pressing fitting (6).

  The extraction jig body (4) has a reaction force receiving portion (41) and a reaction force receiving portion mounting means (42) for mounting the reaction force receiving portion (41). The force receiving portion (41) can be adjusted in the rotational direction and moved in the axial direction, and the punching jig body (4) is mounted on a movable carriage (8) having casters (82) at the four corners of the lower surface. So, for example, you can move freely in the maintenance shop while removing the hydraulic cylinder with large thrust and therefore large mass while attaching it to the jig body, and do all the work of attaching and detaching bushes such as stabilizers alone. I can do it.

  Further, by separately preparing a holding mechanism (bush holding jig B) that pulls the bush (20) toward the bush housing member (12a), the bush (20) is attached to the bush housing member (12a) such as a stabilizer. At the time of insertion, the bush insertion operation can be carried out safely and smoothly by holding the bush (20) on the side of the bracket (7) in advance by such a holding mechanism.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, a bushing detaching apparatus, indicated as a whole by A, is a pressing means comprising an air-driven hydraulic pump 1, a hydraulic cylinder 2, and a hydraulic hose 3 that communicates the air-driven hydraulic pump 1 and the hydraulic cylinder 2. The hydraulic pressure generator is provided.
4 is a side view of the air-driven hydraulic pump 1. When the lever 1a of the air-driven hydraulic pump 1 is pushed in the clockwise direction of the arrow shown in the drawing, the rod described later of the hydraulic cylinder 2 (see FIG. 1) If it is extended and pushed counterclockwise, the extended rod contracts.

Referring again to FIG. 1, the bushing removal tool A further includes a punching jig body 4, a connecting member 5, a pressing bracket 6, a receiving bracket 7, and a reaction force receiving portion 41, which will be described later. An operation carriage 8 with casters is provided, which is mounted with the extraction jig body 4 fixed in the state to be movable as a whole.
In FIG. 1, reference numeral 10 denotes a stabilizer, reference numeral 12 denotes a stabilizer arm, and reference numeral 12 a denotes a bush housing member fixed to the arm 12.

When removing the bush, the stroke of the hydraulic cylinder 2 is increased as compared to when the bush is pressed. Therefore, the push fitting 6 is not directly attached to the tip of the hydraulic cylinder 2, but the ram at the tip of the hydraulic cylinder 2 is connected via the connecting member 5. By attaching to 2R, an increase in the stroke can be prevented.
2 is a side view corresponding to FIG. 1, and FIG. 3 is a front view corresponding to FIG.
However, FIG. 1 shows a state when the bush is removed, but FIG. 2 shows a state when the bush is press-fitted, and the connecting member 5 shown in FIG. 1 is unnecessary in FIG.

  As shown in FIG. 5, the punching tool body 4 includes a reaction force receiving portion 41, a reaction force receiving portion mounting member 42 for mounting the reaction force receiving portion 41 on two rod-like bodies 421 to be described later. It consists of

As shown in FIG. 6, the reaction force receiving portion 41 has a circular first face plate 411 having a hole 411a with a female thread formed in the center thereof, and a hole 412a having the same diameter as the first face plate 411 in the center. The formed circular second face plate 412 is fixed so as to oppose with a predetermined interval by a plurality of (two in the example in the figure) rod-shaped members 413 having a circular cross section.
For details of the fixing method, as shown in the partial cross-sectional view of FIG. 7, the rod-like member 413 has a small diameter portion 413b with a reduced diameter near the both ends, and a large diameter portion 413a on the center side and a small diameter portion. A step end surface 413c with 413b is brought into contact with the mutually opposing surfaces of the face plates 411 and 412, and a double nut N is screwed into a screw portion 413d formed in a small diameter portion 413b penetrating the face plates 411 and 412. By tightening, the rod-shaped member 413 and the face plates 411 and 412 at both ends are fixed.

  Further, as shown in FIG. 8, the reaction force receiving portion mounting member 42 is configured by fixing both end surfaces of two columnar members 421 arranged in parallel to each other with two L-shaped connecting plates 422. Has been. The length of the column member 421 is longer than the distance between the two face plates 411 and 412 of the reaction force receiving portion 41.

  When the face plates 411 and 412 of the reaction force receiving portion 41 are placed on the two columnar members 421 of the reaction force receiving portion mounting member 42, the outer periphery of the face plates 411 and 412 and the outer periphery of the columnar member 421 Line contact (see FIG. 9). Accordingly, the frictional force is small, and if a force is applied along the center line of the reaction force receiving portion 41, even a small force can be easily slid in the axial direction, and positioning in the sliding direction (axial direction) at the time of removing and attaching the bush It becomes easy. Further, even if a rotational force is applied to the face plates 411 and 412, the face plates can be easily rotated with a small force.

Referring to FIG. 9, if the diameter of the face plates 411 and 412 is R, and the diameter of the two cylindrical members 421 is r, the distance L between the centers of the two cylindrical members 421 is the face plate 411, The value is preferably smaller than a value obtained by multiplying the square root of the product of the diameter R of 412 and the diameter r of the rod-shaped body 421 by four.
That is,
It is preferable to arrange so that the relationship of L <4 × √ (R × r) is established.
If it arrange | positions in that way, when the reaction force receiving part mounting member 42 is set | placed on the upper surface of the said working trolley 8, or a flat ground, and the face plates 411 and 412 of the reaction force receiving part 41 are mounted on the column member 421 The lower portions of the outer peripheries of the face plates 411 and 412 do not come into contact with the upper surface or the flat ground of the operation carriage. Therefore, the position adjustment in the sliding direction of the reaction force receiving portion mounting member 42 or the adjustment by the rotation is difficult. Done without.

Referring again to FIG. 1, the hydraulic cylinder 2 has a male screw 2 a formed at the tip of the cylinder outer cylinder, and the tip where the male screw 2 a is formed is a first face plate of the reaction force receiving portion 41. It is screwed into a central hole 411a in which a female screw 411 is formed.
That is, the hydraulic cylinder 2 is always screwed into the first face plate 411 of the reaction force receiving portion 41 of the punching tool body 4 even when the bushing is not attached or detached.

  The ram 2R at the tip of the movable rod that extends and contracts integrally with a piston (not shown) of the hydraulic cylinder 2 protrudes by a predetermined amount at the most retracted position (the state shown in FIGS. 1 and 2).

As shown in detail in FIG. 11, the connecting member 5 used when the bush is removed is configured as a stepped cylindrical member in which a large diameter portion 51 and a small diameter portion 52 are continuous, and is not shown on the large diameter portion 51 side. A fitting hole 54 for fitting the ram 2R at the tip of the cylinder rod is formed.
That is, when the bush is removed, the connecting member 5 is fitted to the tip of the ram 2R of a cylinder rod (not shown) (see FIG. 1).

As shown in detail in FIG. 12, the pressing metal 6 includes a small diameter portion 61, a large diameter portion 62, and a tapered portion 63 that connects the small diameter portion 61 and the large diameter portion 62.
A small hole 64 having the same size as the fitting hole 54 of the connection member 5 is formed in the small diameter portion 61, a large diameter hole 65 is formed in the large diameter portion 62, and the small hole 64 and the large diameter hole 65 are formed. Are communicated by a tapered hole 66. The small diameter portion 61 is formed with a female screw 67 that penetrates the outer periphery and the small hole 64.

  The outer diameter D6 of the large diameter portion 62 is slightly smaller than the outer diameter Db of the outer cylinder portion 21 of the bush 20 (see FIG. 16), and the inner diameter d6 of the large diameter hole 65 is the inner cylinder portion 22 of the bush 20. The outer diameter db is larger.

  When the bush is removed, the small-diameter portion 52 of the connecting member 5 is fitted into the small hole 64 (the fitting hole into which the small-diameter portion 52 of the connecting member 5 is fitted).

On the other hand, as shown in detail in FIG. 13, the metal fitting 7 includes a large diameter portion 71, a small diameter portion 72, a step portion 73 that is a boundary between the large diameter portion 71 and the small diameter portion 72, and an inner diameter portion 74. ing.
At the opening position of the large-diameter portion 71, a stepped enlarged diameter portion 75 is formed which is concentric with the inner diameter portion 74 and has been chamfered 75a. The outer diameter D7 of the small diameter portion 72 is formed to be substantially equal to the diameter of the central hole 412a of the second face plate 412 of the reaction force receiving portion 41. The diameter d72 of the inner diameter portion 74 is slightly larger than the diameter Db of the outer cylinder portion 21 of the bush 20. The diameter d71 of the enlarged diameter portion 75 is slightly larger than the outer diameter of the bush housing member 12a of the stabilizer arm 12.

  When the bush 20 is detached and attached, the metal fitting 7 is fitted in the central hole 412a of the second face plate 412 in advance.

As shown in FIG. 10, the movable carriage 8 includes a rectangular plate-like body 81 and four casters 82 attached in the vicinity of the four corners of the back surface of the plate-like body 81.
The reaction force receiving portion mounting member 42 is fixed to the center of the plate-like body 81 in the longitudinal direction.

  A groove 83 is formed at the center in the width direction of the plate-like body 81 over the entire length of the plate-like body 81, and the width dimension W of the groove 83 is the width of the connecting plate 422 of the reaction force receiving portion mounting member 42. It is formed slightly larger than the directional dimension. Accordingly, if the reaction force receiving portion mounting member 42 is placed in the groove 83 and the reaction force receiving portion mounting member 42 is pushed and pulled in the longitudinal direction of the groove 83, the reaction force receiving portion mounting can be easily performed on the carriage 8. The member 42 can be slid.

  Next, a procedure for removing the bush 20 from the stabilizer arm 12 (see FIG. 15) will be described below with reference to FIGS.

First, before the work, both the bush 20 and the bush accommodating member 12a of the stabilizer arm 12 are provided with alignment marks for confirming the mounting position (bolt holes for fixing the stabilizer arm to the pins 24 of the bush 20 (see FIG. 16)). The bolt hole position has a specific direction (angle) with respect to the longitudinal direction of the arm 12. Therefore, when the replacement bushing is press-fitted, the direction of the bolt hole is set to the proper direction. A confirmation mark).
Then, the small-diameter portion 72 of the metal fitting 7 is fitted into the central hole 412 a of the second face plate 412 of the reaction force receiving portion 41.

The stabilizer arm 12 with the bush 20 attached is carried near the detaching device A, and the bush accommodating member 12a (the outer diameter) at the tip of the stabilizer arm 12 is fitted into the enlarged diameter portion 75 of the bracket 7.
At that time, the outer edge of the arm 12 (see also FIG. 15) is in contact with the rod-like member 413 of the reaction force receiving portion 41 (see FIG. 3), and the core of the bush 20 and the core of the receiving bracket do not match. The face plate 411 or 412 is grasped and the reaction force receiving portion 41 itself is rotated to align the core.

  Here, the hydraulic pressure of the hydraulic cylinder 2 is once released, and the movable rod 2R is moved backward.

Next, it arrange | positions so that the center pin 24 of the bush 20 may be hidden in the large diameter hole 65 of the pressing metal 6, and it connects so that the small diameter part 52 of the connection member 5 may fit in the small diameter hole 64 of the pressing metal 6. A pressing metal fitting 6 is attached to the member 5.
At that time, the connecting member 5 and the pusher 6 can be reliably connected by screwing and tightening a screw into the female screw 67 (see FIG. 12).

  Next, after the connecting member 5 is fitted to the ram 2R at the tip of the movable rod (cylinder rod) of the hydraulic cylinder 2, the air-driven hydraulic pump 1 is operated to feed the hydraulic pressure to the hydraulic cylinder 2, and the ram 2R is moved forward. The end surface of the pusher 6 on the large diameter 62 side is brought into contact with the outer cylinder portion 21 of the bush 20 via the connecting member 5 fitted to the ram 2R at the tip of the cylinder rod.

  As it is, the outer cylindrical portion 21 of the bush 20 is pushed by the end surface on the large-diameter 62 side of the push fitting 6, the bush 20 is pushed out from the bush accommodating member 12 a at the tip of the stabilizer arm 12, and the bush 20 is pushed out from the inner diameter portion 74 of the catch 7. Thus, the removal (extraction) of the bush 20 from the bush housing member 12a of the stabilizer 10 is completed.

  Next, a method for fitting (press-fitting) the replacement bush 20 into the bush accommodating member 12a at the tip of the stabilizer arm 12 will be described with reference to FIGS.

First, an alignment mark is attached at the same position as the removed bush 20. At that time, it is preferable that a matching mark is also provided on the outer periphery so as to facilitate alignment.
The bush receiving member 12a of the stabilizer arm 12 from which the old bush has been removed is removed from the reaction force receiving portion 41, and a stopper ring (not shown) is provided on the bottom of the enlarged diameter portion 75 of the metal fitting 7 (the bush 20 is a specified amount, the bush receiving member of the arm 12 12a is assembled with a member that abuts the ring and notifies the completion of press-fitting when press-fitting is completed.

  In FIG. 2, the bush housing member 12 a of the stabilizer arm 12 is set in the receiving metal 7 as in the case of extraction. Next, the replacement bush 20 is aligned with an unillustrated set tool and set in the insertion opening of the bush housing member 12a of the arm 12.

  Next, using the bush holding jig B, the receiving bush 7, the bush receiving member 12 a of the stabilizer arm 12, and the bush 20 accurately align the shaft cores, and the bush 20 stably. The metal fitting 7 is held.

  Here, the bush holding jig B is constituted by a hook member Bh, a wing nut Bn, a coil spring Bs, and a disk Bd.

  The hook member Bh has a male thread B1 formed at the center of the shaft, a hook B2 whose tip is orthogonal to the shaft core, and a knob B3 at the rear end.

  Although not clearly shown in the drawing, the disk Bd has an insertion hole slightly larger than the diameter of the shaft of the hook member Bh at the center, and a plurality of knock pins Bp are fixed in the vicinity of the outer periphery. The shaft of the hook member Bh is inserted through the insertion hole. Further, when the jig B is set so as to be brought into contact with the tip of the small diameter portion 72 of the metal fitting 7, the outer periphery of the knock pin Bp is arranged so as to fit exactly on the outer peripheral side of the small diameter portion 72 of the metal fitting 7. Yes.

  The wing nut Bn is screwed into the male screw B1, and the coil spring Bs is interposed in a region between the disk Bd and the wing nut Bn.

In order to hold the bush 20 to the metal fitting 7 by the bush holding jig B, first, the hook B2 is hooked in the mounting hole 24h formed in the bush pin 24 and at the same time, the tip of the small diameter portion 72 of the metal fitting 7 is received. Abut. Here, it should be noted that the receiving bush 7, the bush accommodating member 12 a of the stabilizer arm 12, and the bush 20 accurately align the shaft core.
Next, when the thumbscrew is turned and the hook B <b> 2 is pulled to the left in the drawing, the bush 20 is stably and reliably held by the receiving bracket 7.
Therefore, the subsequent bush insertion operation can proceed safely and smoothly.

  Next, the connecting member 5 is removed from the ram 2R at the tip of the cylinder rod, and the pusher 6 is attached to the ram 2R instead.

  The air drive hydraulic pump 1 is operated to bring the pusher 6 closer to the end surface of the outer cylinder portion 21 of the bush 20. After aligning the core, the air pump is operated, and the outer cylinder portion 21 of the bush 20 is further pushed in by the end face on the large-diameter 62 side of the pusher 6.

  As it is, the outer cylinder portion 21 of the bush 20 is continuously pushed by the end face on the large-diameter 62 side of the pressing metal 6, and it is confirmed that the bush 20 hits the stopper and a confirmation sound is emitted from the stopper, and the press-fitting operation is completed.

  As described above, according to the bushing detaching apparatus A of the present embodiment, the air-driven hydraulic pump 1 and the hydraulic cylinder 2 operated by the air-driven hydraulic pump 1 are used as the pressing means. A thrust of 35 tons can be obtained, and all press-fit bushes for large vehicles can be attached and detached.

  In order to remove the bush, an increase in the stroke of the hydraulic cylinder 2 is prevented by interposing the connecting member 5 between the hydraulic cylinder 2 and the pressing metal 6.

  The punching jig body 4 has a reaction force receiving portion 41 and a reaction force receiving portion mounting means 42 for mounting the reaction force receiving portion 41, and the angle of the reaction force receiving portion 41 in the rotation direction with a slight force. In addition to being able to adjust and move in the axial direction, the punching jig body 4 is mounted on the movable carriage 8 having casters 82 at the corners of the lower surface 4. For example, the hydraulic pressure has a large thrust and therefore a large mass. With the cylinder removed and attached to the jig body, it can be moved freely within the maintenance shop, and all the work of attaching and detaching bushes such as stabilizers can be performed by one person.

  When the bush 20 is removed and press-fitted, the inclination angle with respect to the horizontal when the stabilizer arm 12 is installed on the apparatus is determined by the width of the arm itself, the working area, and the auxiliary installation stand (not shown) for the stabilizer 10. It depends on the height etc. In such a case, as shown in FIG. 3, the face plates 411 and 412 of the reaction force receiving portion 41 are rotated in the direction of the arrow in the drawing so that the outer edge of the arm 12 and the rod-like member 413 do not come into contact with each other. I can do it. The centering of the bush 20 with respect to the bush housing member 12a can be performed in the same manner.

  The illustrated embodiment is merely an example, and is not a description intended to limit the technical scope of the present invention. For example, in the embodiment, the hydraulic cylinder 2 has a male screw 2a formed at the tip of the cylinder outer cylinder, The female screw of the first face plate 411 is screwed into the male screw 2a and fastened to the surface facing the second face plate 412, but a flange portion is formed at the tip of the cylinder outer cylinder, and the flange portion is anti-reverse. You may attach to the face plate of a force receiving part with fastening members, such as a through bolt, for example.

The top view which showed the whole structure of the bush removal | desorption apparatus which concerns on embodiment of this invention. The figure which abbreviate | omitted the air drive hydraulic pump with the side view with respect to FIG. The front view with respect to FIG. The side view of the air drive hydraulic pump concerning the embodiment of the present invention. The perspective view of the extraction jig | tool main body which concerns on embodiment of this invention. The perspective view of the reaction force receiving part which concerns on embodiment of this invention. The fragmentary sectional view which shows the principal part of a reaction force receiving part. The perspective view of the reaction force receiving part mounting member which concerns on embodiment of this invention. The figure explaining the center-to-center distance of the two cylindrical members of the reaction force receiving portion mounting member. The perspective view of the movable trolley | bogie which concerns on embodiment of this invention. Sectional drawing of the connection member which concerns on embodiment of this invention. Sectional drawing of the metal fitting which concerns on embodiment of this invention. Sectional drawing of the metal fitting which concerns on embodiment of this invention. The side view explaining the structure of an air suspension. The figure which showed the plane and side surface of the stabilizer simultaneously. Side view of the bush. The front view of a bush.

Explanation of symbols

A ... Bushing detaching device 1 ... Air-driven hydraulic pump 2 ... Hydraulic cylinder 3 ... Hydraulic hose 4 ... Pulling jig body 5 ... Connecting member 6 ... Pressing bracket 7 ... · Receiving bracket 8 · · · movable carriage 10 · · · stabilizer 12 · · · arm 12a · · · bushing receiving member 41 · · · reaction force receiving portion 42 · · · reaction force receiving portion mounting member

Claims (5)

  A bushing detaching apparatus for detaching a bush press-fitted into an arm portion such as a stabilizer used in a suspension system of a vehicle, comprising: a pressing means, a pulling jig body, a pressing metal, and a receiving metal, wherein the pressing means Is fixed to one end of the punching jig main body, the press fitting is attached to the tip of the pressing means, and the support fitting is attached to receive the reaction force at the other end of the punching jig main body, The receiving metal fitting is configured to be able to attach a bush housing member, and the pressing metal fitting is configured to press the axial end surface of the outer cylindrical portion of the bush by the pressing means. .   2. The bushing detaching apparatus according to claim 1, wherein the pressing means includes an air driven hydraulic pump, a hydraulic cylinder, and a hydraulic hose communicating the air driven hydraulic pump and the hydraulic cylinder.   3. A bushing detaching device according to claim 1, wherein a connecting member is interposed between the pressing means and the pressing metal.   The punching jig main body has a reaction force receiving portion and a reaction force receiving portion mounting means for mounting the reaction force receiving portion, and allows angle adjustment in the rotation direction and axial movement of the reaction force receiving portion. The bush detaching device according to claim 1, wherein the bush detaching device is configured as described above.   The said extraction jig | tool main body is mounted in the movable trolley | bogie which has a caster in four corners of the lower surface, It was comprised so that removal | desorption of a bush and a movement of a jig | tool main body might be permitted. Bush desorption device.

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