JP2012017769A - Air spring with stopper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air spring with a stopper improved to easily make a height adjustment of the stopper caused by a height adjustment by air supply-exhaust to a diaphragm, more than a conventional height adjustment.SOLUTION: The air spring A with the stopper includes: an air spring part (a) constituted of an outer cylinder 1, an inner cylinder 2 and a rubber diaphragm 3 ranging over both 1 and 2; an elastic part (b) below the air spring part (a); and a descent regulating means S arranged to make an upper stop member 5 and lower stop members 2 abut on each other for preventing excessive compression of the diaphragm 3. A height adjusting device T is constituted by supporting the three lower stop members 12 by the inner cylinder 2 to be movable in the radial direction and forming the upper stop member 5 in a ring body having a thin inner diameter part 5A and a thick outer diameter part 5B, and an operation mechanism B is equipped for performing height adjusting operation from the outside of the diaphragm 3, for rocking and moving the lower stop members 12 over a first stopper position (t) in which the lower stop members abut on the inner diameter part 5A and a second stopper position (j) in which the lower stop members 12 abut on the outer diameter part 5B.

Description

  The present invention relates to an air spring with a stopper, and more specifically, from an upper support portion on a vehicle body side, a lower support portion on a cart side disposed below the upper support portion, and a diaphragm made of an elastic material provided over both of them. And the upper support member disposed in the diaphragm as the compression amount in the vertical direction of the diaphragm becomes a predetermined value. The present invention relates to an air spring with a stopper equipped with a lowering restricting means that comes into contact with a lower stop member and restricts excessive lowering movement of the upper support part.

  In general, the air spring is used as a suspension device and a vibration isolator, but may be used as a vehicle height adjusting device by taking air into and out of the diaphragm. For example, in an air spring used for a railway vehicle carriage, the height position of the vehicle is adjusted in order to facilitate getting on and off the platform, or power is supplied from the ground track running state where power is supplied from the pantograph and from below the side of the vehicle. For example, the vehicle height may be changed depending on the underground track running state. Further, when the tread surface of the worn wheel is shaved again and the diameter is reduced, the vehicle height is lowered. Therefore, the height of the vehicle is returned to the original position by pressurizing the diaphragm.

  The compression limit (stroke limit) in a normal air spring with a stopper is determined by the contact between the upper support portion and the lower support portion. Therefore, simply changing the working height of the diaphragm when adjusting the vehicle height results in a different amount of compression displacement for each working height, which may reduce the function of the air spring as a vibration isolator. .

  For such vehicle height adjustment, conventionally, in order to keep the compression stroke of the air spring constant after vehicle height adjustment (to eliminate characteristic changes due to stroke fluctuation), the position of the mounting surface between the air spring and the carriage In general, a method of returning the vehicle height through a shim that raises the vehicle height is employed. However, the method of lifting the entire air spring using the shim requires the air spring to be temporarily removed from the carriage for mounting the shim, which is cumbersome.

  The air spring with stopper disclosed in Patent Document 1 has a structure in which the stroke of the diaphragm is set to increase or decrease by relative rotation of two stopper members with the support portion side as the upper support portion side. Can be considered to be accommodated in the diaphragm in advance. However, even in the air spring disclosed in Patent Document 1, it is necessary to temporarily remove the air spring from the vehicle body and perform the rotation operation of the stopper member because of the structure. Therefore, the height adjustment is complicated.

JP 9-89029 A

  An object of the present invention is to provide an air spring with a stopper which is improved so that the height adjustment of the stopper accompanying the height adjustment by supplying / discharging air to / from the diaphragm can be easily performed as compared with the prior art.

The invention according to claim 1 includes an upper support portion 1 on the vehicle body side, a lower support portion 2 on the cart side disposed below the upper support portion 1, and a diaphragm 3 made of an elastic material provided over both of them 1 and 2. And the upper support portion disposed in the diaphragm 3 as the compression amount in the vertical direction of the diaphragm 3 reaches a predetermined value k. In the air spring with a stopper, which is equipped with a lowering restricting means S in which the lower support member abuts against the lower stop member 12 of the wing and the excessive lowering movement of the upper support 1 is restricted.
A plurality of the stop members 12 of either the upper stop member 5 or the lower stop member 12 can move in the radial direction with respect to the axis P at a position that is symmetric or substantially symmetric with respect to the axis P of the diaphragm 3. The other stop member 5 of the upper stop member 5 and the lower stop member 12 is formed to have different heights in the direction of the axis P inside and outside the axis P. Thus, the height adjusting device T is configured, and the one stop member 12 is brought into contact with a first stopper position t at which the inner end portion 5A of the other stop member 5 can come into contact, and the other stop member 12 An operating device for performing a height adjustment operation to move radially across the second stopper position j with which the radially outer portion 5B of the stop member 5 can abut on the outside of the diaphragm 3. Is characterized in that B is equipped.

  According to a second aspect of the present invention, in the air spring with a stopper according to the first aspect, the one stop member 12 is pivotally supported by the lower support portion 2 and mounted so as to be swingable. The other stop member 5 is an upper stop member 5 attached to the lower side of the upper support portion 1.

  According to a third aspect of the present invention, in the air spring with a stopper according to the second aspect, the operating mechanism B is pivotally supported by the lower support portion 2 so as to be rotatable about the axis P. The movable plate 15, the pivot shaft 12 a that is engaged with the outer peripheral portion of the drive-side rotation plate 15 in the plurality of lower stop members 12 pivotally supported by the lower support portion 2, and the drive And an operating handle 17 provided at the outer peripheral end of the rotating plate 15.

  According to a fourth aspect of the present invention, in the air spring with a stopper according to the third aspect, the lower support portion 2 includes an upper plate portion 2A that supports the lower bead portion 3b of the diaphragm 3 and the upper plate portion 2A. The lower plate portion 2B that supports the upper plate portion 2A by placing the upper plate portion 2A in a small diameter state, and the drive circuit rotates in the space portion 2k formed between the upper plate portion 2A and the lower plate portion 2B. A moving plate 15 is disposed, and a downward projecting portion of the pivot shaft 2a penetrating up and down the upper plate portion 2A and an outer peripheral portion of the driving rotating plate 15 are engaged with each other and the driving rotating plate 15 is engaged. The handle 17 is drooped at a portion 15c having a diameter larger than that of the lower plate portion 2B.

  According to a fifth aspect of the present invention, in the air spring with a stopper according to the fourth aspect, the lower flange 2B is an upper flange in the elastic part b of the laminated rubber structure in which the base 4 supported by the carriage is the bottom. 11, the handle 17 is disposed beside the outer peripheral side of the elastic part b.

  According to the first aspect of the present invention, as described in detail in the section of the embodiment, the height regulating device for the lowering restricting means is provided while the lowering restricting means and the height adjusting device are compactly provided inside the diaphragm. Can be operated outside the diaphragm, so that the air spring can be operated without removing it from the vehicle or carriage, and the height of the lowering control means can be switched without hindering the function of the air spring. It is easy. Further, a plurality of one of the upper and lower stop members are arranged symmetrically with respect to the diaphragm axis and are equipped so as to be movable in the radial direction, and the other stop member is formed to have a different height inside and outside the diameter. Thus, since the height adjusting device is configured, the contact between the upper and lower stop members by the lowering restriction is performed in a well-balanced state centering on the diaphragm axis regardless of the height adjustment. As a result, there is provided an air spring with a stopper which is improved so that the height adjustment of the stopper accompanying the height adjustment by air supply / exhaust to the diaphragm can be performed in a simple, convenient and balanced state. be able to.

  According to the invention of claim 2, since the stop member that is equipped with a plurality and is movable in the radial direction is set as the lower stop member, and the stop member that varies the height in the radial direction is set as the upper stop member, An advantage that the structure of the height adjusting device can be simplified by using a lower stop member that is relatively complicated in structure and that requires a plurality of parts and that can be easily received from below and is easy to configure. There is.

  According to the invention of claim 3, by operating the handle, a plurality of lower stop members can be moved in the radial direction simultaneously and interlocked with a single drive rotating plate at the same time. It is possible to provide an air spring with a stopper that can be easily adjusted in height.

  According to the fourth aspect of the present invention, the drive rotation plate, which is a main part of the operation mechanism, is accommodated and disposed in a space formed between the upper and lower plate portions constituting the lower support portion. Therefore, a relatively complicated component that simultaneously operates a plurality of lower stop members with a single drive rotating plate is housed internally, which can contribute to the realization of a smooth and reliable function, and is less likely to be dusty or foreign. An air spring with a stopper having an advantageous height adjustment device can be provided.

  According to the invention of claim 5, if the elastic part is provided below the air spring part, the handle is arranged on the lateral side on the outer peripheral side of the elastic part, and the handle is easy to operate. However, there is an advantage that the elastic portion exhibits a guide function so that it is not moved carelessly, and a more rational air spring with a stop can be obtained.

Sectional drawing which shows half before and after height adjustment of the air spring with a stopper for railway vehicles (Example 1) 1 shows the height adjustment action of the air spring of FIG. 1, (a) is normal, (b) is height adjustment Sectional drawing which shows the structure of the air spring with a stopper for rail vehicles (Example 2) Sectional drawing which shows after adjustment of the descent | fall control height of the air spring with a stopper of FIG. The top view of the height adjustment apparatus of Example 2 is shown, (a) is normal time, (b) is at the time of height adjustment. Sectional drawing which shows the structure of the air spring with a stopper by Example 3 6 shows the height adjustment action of the air spring of FIG. 6, (a) at the time of the first adjustment, (b) at the time of the second adjustment.

  Hereinafter, an embodiment of an air spring with a stopper according to the present invention will be described with reference to the drawings when applied to a railway vehicle. In FIG. 1, the normal state (state before height adjustment) is shown on the left side of the axis P, and the ascending state (state after height adjustment) is shown on the right side of the axis P. In the air springs with stoppers of the second and third embodiments, the same functional parts as those of the air spring with stoppers according to the first embodiment are denoted by the same reference numerals, and the description thereof is made. The operation mechanism B to be performed is omitted, and the principle of the lowering restricting means S and the height adjusting device T is shown.

[Example 1]
As shown in FIG. 1 and FIG. 2, the air spring A with a stopper for a railway vehicle according to the first embodiment includes an outer cylinder (an example of an upper support part) 1 and an inner cylinder (a lower support part of the lower support part). An example) 2 and an air spring portion a formed of a rubber (an example of an elastic material) diaphragm (bellows) 3 provided over both 1 and 2, and an inner cylinder 2 and a carriage-side pedestal 4 A laminated rubber part b as an elastic part is interposed between the upper and lower sides of the frame. As the amount of compression of the diaphragm 3 in the vertical direction becomes a predetermined value, the upper support portion 1 and the lower support portion 2 are both arranged in the diaphragm 3 and the lower stop member 12 of the waist. Can be operated by the lowering restricting means S for restricting excessive lowering movement of the outer cylinder 1 by being in contact with each other, the height adjusting device T capable of changing and adjusting the height position of the lower stop member 12, and the height adjusting device T. Equipped with a simple operation mechanism B

  The outer cylinder 1 includes a main body 1A made of a substantially deep dish-shaped circular steel plate integrally having a side peripheral wall 1a, a support shaft 1b fixed to the center of the main body 1A, and the like. A rubber ring guide 1c is provided at the lower part of the inner surface of the side peripheral wall 1a. A support shaft 1b having a vertical axis (vertical axis) P is supported by a vehicle body (not shown) such as a passenger car. An upper stop member 5 made of an elastic material such as rubber is fixedly provided on the lower surface of the main body 1A.

  The upper stop member 5 continues to the center hole 5a, a flat inner diameter portion 5A having a very thin inner diameter, an outer diameter portion 5B having a thick upper and lower thickness following the outer diameter of the inner diameter portion 5A, and the outer diameter portion 5B. The flat joint portion 5b having a very thin thickness and a bead holding ring portion 5c that continues to the outside of the diameter of the joint portion 5b are formed as an integral product. The bead holding ring portion 5c has a function for restricting the inner bead portion 3a of the diaphragm 3 to be attached to the main body 1A.

  The inner cylinder 2 has an upright flange 2a and supports the upper plate portion 2A on which the lower bead portion 3b of the diaphragm 3 is fitted and supported, and the upper plate portion 2A in a state of a smaller diameter than the upper plate portion 2A. The lower plate portion 2B is bolted to the upper flange 11 of the laminated rubber portion b. The upper plate portion 2A is formed with a large hole 2h centered on the axis P, and a central cylindrical shaft portion 2b projecting upward from the lower plate portion 2B is fitted therein, and the upper plate portion 2A and the lower plate are fitted therein. Between the upper and lower portions of the portion 2B, a thin flat space portion 2k is formed vertically for the operating mechanism. Further, the upper plate portion 2A and the lower plate portion 2B into which the outer peripheral portions are fitted are screwed across the outer peripheral projections 2t formed at a plurality of locations on the lower plate portion 2B and the outer peripheral portion of the upper plate portion 2A. The bolt 13 is integrated. A rubber retaining ring 6 is attached to the outer peripheral portion of the upper surface of the upper plate portion 2A.

  As shown in FIGS. 1 and 2, the lower stop member 12 is evenly arranged around the axis P in a state where it is pivotally supported by the outer peripheral side portion of the upper plate portion 2 </ b> A with a longitudinal pivot axis X. Three are installed for each angle. Each lower stop member 12 has a pivot shaft 12a at the base, a fan-shaped thick portion 12b on the tip side, and an arm portion 12c that connects the pivot shaft 12a and the thick portion 12b. The first stopper position (standby position) t shown in FIG. 2 (a) and the second stopper position (raised position) j shown in FIG. 2 (b) can be swung. The pivot shaft 12a vertically penetrates the upper plate portion 2A, and a small-diameter driven gear 14 located in the space portion 2k is formed at the lower end portion thereof. The arm portion 12c is screwed to the pivot shaft 12a so as not to rotate relative to the arm portion 12c. In addition, a sliding plate 20 is provided between the upper plate portion 2A and the lower stop member 12 so as to improve the sliding so that the swing movement of the lower stop member 12 is performed smoothly.

  In the space portion 2k, a drive rotation plate 15 that swings and operates the three lower stop members 12 all at once is accommodated so as to be rotatable within a predetermined angle range about the axis P. That is, the drive rotation plate 15 includes a boss portion 15a pivotally fitted to and supported by the central cylindrical shaft portion 2b, three gear plate portions 15b having a large-diameter drive gear 16 engaged with the driven gear 14 on the outer periphery, and It has a single operation arm portion 15c having a handle 17 in a suspended state at the tip. In other words, the driven gear 14 that is a downward projecting portion of the pivot shaft 2a that vertically penetrates the upper plate portion 2A and the drive gear 16 that is the outer peripheral portion of the drive rotation plate 15 are engaged and interlocked, and the drive rotation plate. A handle 17 is suspended from a portion 15c having a diameter larger than that of the lower plate portion 2B. Accordingly, by operating the handle 17 to move in the circumferential direction with respect to the axis P, the three lower stop members 12 interlockingly engaged can be swung over the standby position t and the raised position j.

  The pedestal 4 is formed by a cylindrical shaft 7 having the same vertical axis P as the support shaft 1b, and a flange plate 8 fitted and integrated with the upper portion of the cylindrical shaft 7, and the cylindrical shaft 7 is a carriage. Supported by a frame (not shown). The laminated rubber part b is formed by alternately stacking two layers of the cylindrical elastic rubber layer 9 and one layer of the metal plate 10 between the flange plate 8 of the base 4 and the upper flange 11 described above. It is comprised by the thing of the hollow and well-known structure.

  The lowering restricting means S is composed of upper and lower stop members 5 and 12, and in the normal state (the left portion of the axis P in FIG. 1), the inner diameter portion 5 </ b> A of the upper stop member 5 and the thickness of the lower stop member 12. Excessive downward movement of the outer cylinder 1 is restricted by contacting the three portions of the meat portion 12b in the vertical direction. The compression amount in the vertical direction of the diaphragm in the normal state is k, which is a predetermined amount. Further, in the raised state (the right side portion of the axis P in FIG. 1), the outer diameter portion 5B of the upper stop member 5 and the three portions of the thick portion 12b of the lower stop member 12 abut in the vertical direction, The excessive downward movement of the outer cylinder 1 is restricted. The amount of compression in this raised state is also k.

  In other words, the plurality of lower stop members 12 are equipped as those that can move in the radial direction with respect to the axis P at a position that is symmetric or substantially symmetric with respect to the axis P of the diaphragm 3, and the upper stop member 5 is The height adjusting device T is configured to have different heights in the axial center P direction on the inside and outside of P, and the lower stop member 12 is in contact with the radially inner portion 5A of the upper stop member 5. An operation for performing a height adjustment operation on the outside of the diaphragm 3 to move in the radial direction over a possible first stopper position t and a second stopper position j with which the radially outer portion 5B of the upper stop member 5 can abut. Mechanism B is equipped.

  The operation mechanism B includes a drive side rotation plate 15 pivotally supported on the inner cylinder 2 so as to be rotatable about an axis P, and three (a plurality of examples) lower stop members pivotally supported on the inner cylinder 2. 12, a pivot shaft 12 a that is engaged with and rotated by the outer peripheral portion of the drive-side rotation plate 15, and an operated handle 17 that is provided at the outer peripheral end of the drive rotation plate 15. It is configured. The lower plate portion 2B is mounted and fixed on the upper flange 11 in the elastic portion b of the laminated rubber structure configured with the pedestal 4 supported by the carriage as the bottom, and the handle 17 is on the side of the outer peripheral side of the elastic portion b. Has been placed.

  Next, a method for adjusting the height of the lowering restricting means S by operating the height adjusting device T using the operating mechanism B will be described. First, in the normal state, as shown in FIG. 2A, the handle 17 is in the normal position N, and the three lower stop members 12 have the thick portions 12b continuous in the circumferential direction so that the air holes 18 are formed. It is in the first stopper position t to be formed. The lowering restricting means S at this time is formed by three thick portions 12b and an inner diameter portion 5A in a cylindrical shape (see the left side portion of the axis P in FIG. 1). In this normal state, the inside of the diaphragm 3 and the inside of the elastic portion b are hermetically sealed through the vent hole 18 formed by the three thick portions 12b and the central hole 19 of the central cylindrical shaft portion 2b. It is communicated in a state.

  Then, air is supplied to the diaphragm 3 for pressurization so as to restore the vehicle height lowered due to grinding of the wheel tread, etc., and as shown on the right side of the axis P of FIG. 1, the main body 1A and the ring inner plate 2c. When the height adjustment is performed so that the vertical distance between the vertical position and the vertical distance becomes Hh (= H + γ) that is larger by γ than the distance H in the normal state, the handle 17 is rotated from the normal position N in the direction of arrow A to the raised position. Switching to U, each lower stop member 12 is swung to switch from the first stopper position t to the second stopper position j. Then, the lowering restricting means S at that time is formed by the three thick portions 12b and the outer diameter portion 5B that are located at an equal angle (120 degrees) centered on the axis P (see FIG. 1). (See right side of axis P). Since the difference between the thickness of the outer diameter portion 5B and the thickness of the inner diameter portion 5A is set to γ, the amount of compression by the lowering restricting means height S is k even in this rising state, and the same state as the normal state is maintained.

[Example 2]
As shown in FIGS. 3 and 4, the air spring A with a stopper according to the second embodiment is made of rubber that is provided across the outer cylinder 1, the inner cylinder 2 disposed below the outer cylinder 1, and both of them. It has an air spring part a composed of a diaphragm 3, and a laminated rubber part b as an elastic part is interposed between the upper and lower sides of the inner cylinder 2 and the pedestal 4 on the carriage side. The laminated rubber part b is composed of three elastic rubber layers 9 and two metal plates 10.

  The outer cylinder 1 is integrally provided with a cylindrical bead holding ring 1d for fitting the upper bead portion 3a on the lower surface of the main body 1A having the side peripheral wall 1a. A flat columnar upper stop member 5 made of an elastic material such as rubber is provided over the lower surface of the central portion of the main body 1A. The inner cylinder 2 is formed in a relatively thick disk having an upstanding flange 2a and a fitting outer peripheral part 2c, and is also placed and supported by a disk-shaped upper flange 11. The lower bead portion 3b is fitted to the fitting outer peripheral portion 2c in a state where the inner periphery is restricted by the standing flange 2a. As shown in FIGS. 3 to 5, the lower stop member 12 includes a pivot shaft 12 a, a thick portion 12 b that has a half-cylindrical shape in plan view, and an arm portion 12 c. The inner cylinder 2 is supported in a pivoted state in a symmetric state with respect to the axis P.

  In the normal state, as shown in FIG. 5 (a), the pair of lower stop members 12 and 12 are positioned on the outside of the diameter, and as shown in FIG. 3, the upper stop member 5 and the inner cylinder 2 are vertically moved. The lowering restricting means S is configured by the contact. The vertical height of the main body 1A and the inner cylinder 2 at this time is H, and the maximum descending amount of the outer cylinder 1 (maximum compression amount of the diaphragm 3) is k (predetermined value).

  Then, air is supplied to the diaphragm 3 for pressurization so as to restore the vehicle height lowered due to grinding of the wheel tread, etc., and the vertical distance between the main body 1A and the inner cylinder 2 is γ from the distance H in the normal state. When the height is adjusted so as to be large Hh (= H + γ), as shown in FIG. 5B, the pair of lower stop members 12 swings and moves inwardly until they contact each other in the circumferential direction. Let Then, as shown in FIG. 4, this time, the thick portion 12c close to the center and the upper stop member 5 are brought into contact with each other in the vertical direction, and the vertical distance is k. That is, the height of the thick portion 12c is set to be the same as the increase amount γ.

  In the air spring A with a stopper according to the second embodiment, the lowering restricting means S is composed of the upper stop member 5 and the inner cylinder 2 or the lower stop member 5 and the inner cylinder 2. It is comprised by a pair of lower stop members 12 and 12 pivotally supported by the inner cylinder 2 so that rocking movement is possible in the radial direction with respect to the core P.

Example 3
As shown in FIGS. 6 and 7, the air spring A with a stopper according to the third embodiment is different from the air spring A with a stopper according to the second embodiment shown in FIGS. It is only that. That is, the pair of lower stop members 12 is a height adjusting device T having a structure in which the lower stop members 12 are stacked in two upper and lower stages so that they can swing independently, and includes a total of four lower stop members 12. The basic principle is the same as that of the second embodiment, and the thickness (height) of the thick portion 12c is γ in the second embodiment and β smaller than γ in the third embodiment.

  Now, in the normal state, any lower stop member 12 is in the standby position (see FIG. 5 (a)) close to the outside of the diameter, and the lowering restricting means S, as shown in FIG. 5 and the inner cylinder 2 are brought into contact with each other. The maximum descending amount (maximum compression amount of the diaphragm 3) in this normal state is k, and the vertical distance between the main body 1A and the inner cylinder 2 is H.

  Next, in the first ascending state in which the diaphragm 3 is pressurized for some reason and its vertical height is increased by β, as shown in FIG. (See FIG. 5B). Then, the lowering restriction means S has a configuration in which the lowering restriction is performed by the contact between the lower pair of the lower stop member 12 and the upper stop member 5. The vertical distance between the main body 1A and the inner cylinder 2 in this first raised state is H + β, and therefore the vertical distance between the lower pair of lower stop member 12 and upper stop member 5 is still k.

  In the second ascending state in which the diaphragm 3 is further pressurized and its vertical height is increased by β + β, as shown in FIG. 7B, in addition to the lower side, the upper pair of lower stop members 12 are also moved to the center. It is moved (see FIG. 5B). Then, the lowering restricting means S has a configuration in which the lowering restriction is performed by the contact between the four lower stop members 12 and the upper stop member 5. The vertical distance between the main body 1A and the inner cylinder 2 in the second raised state is H + β + β, and therefore the vertical distance between the upper pair of lower stop members 12 and the upper stop member 5 is also k.

DESCRIPTION OF SYMBOLS 1 Upper support part 2 Lower support part 2A Upper side plate part 2B Lower side plate part 2a Pivoting shaft 2k Space part 3 Diaphragm 3b Lower bead part 4 Base 5 Upper stop member 5A Diameter inner part 5B Diameter outer part 11 Upper flange 12 Lower stop member 12a Pivoting shaft 15 Drive side rotating plate 15c Large diameter portion 17 Handle B Operating mechanism P Shaft center S Lowering restricting means T Height adjusting device a Air spring portion b Elastic portion j Second stopper position k Predetermined value t First 1 stopper position

Claims (5)

It has an air spring part consisting of an upper support part on the vehicle body side, a lower support part on the carriage side disposed below it, and a diaphragm made of an elastic material provided over both, and the vertical direction of the diaphragm As the amount of compression at a predetermined value reaches a predetermined value, the upper support member and the lower support member both disposed in the diaphragm come into contact with the upper support member and the lower support member comes into contact with the upper support member. An air spring with a stopper equipped with a lowering restricting means for restricting excessive downward movement of the part,
A plurality of the stop members of either the upper stop member or the lower stop member are mounted as being movable in the radial direction with respect to the axis at a position that is symmetric or substantially symmetric with respect to the axis of the diaphragm. And the other stop member of the upper stop member and the lower stop member is formed to have a different height in the axial direction on the inside and outside of the axial center to constitute a height adjusting device. The first stopper position at which the one stop member can come into contact with the radially inner portion of the other stop member, and the second stopper position at which the radially outer portion of the other stop member can come into contact A stopper-equipped air spring equipped with an operation mechanism that performs a height adjustment operation that moves in the radial direction over the outside of the diaphragm.   The one stop member is a lower stop member that is pivotally supported by the lower support portion and is mounted so as to be swingable. The upper stop member is attached to the lower side of the upper support portion. The air spring with a stopper according to claim 1.   The operation mechanism includes a drive side rotation plate pivotally supported by the lower support portion so as to be rotatable about the axis, and the drive side of the plurality of lower stop members pivotally supported by the lower support portion. 3. A pivot shaft that is interlocked and rotated by engaging with the outer peripheral portion of the rotating plate, and a handle for operation provided at the outer peripheral end of the drive rotating plate. An air spring with a stopper as described in 1.   The lower support portion includes an upper plate portion that supports the lower bead portion of the diaphragm, and a lower plate portion that supports the upper plate portion with a smaller diameter than the upper plate portion, and supports the upper plate. The drive rotation plate is disposed in a space formed between the upper and lower portions of the upper plate portion and the lower plate portion, and the lower protrusion portion of the pivot shaft that vertically penetrates the upper plate portion and the drive rotation plate The air spring with a stopper according to claim 3, wherein the outer peripheral portion is interlocked with the outer peripheral portion, and the handle is suspended from a portion of the drive rotation plate that has a larger diameter than the lower plate portion.   The lower plate portion is mounted and fixed on an upper flange in an elastic portion of a laminated rubber structure configured with a pedestal supported by a carriage as a bottom, and the handle is disposed on the lateral side of the elastic portion. The air spring with a stopper according to claim 4.

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