CN203543994U - Primary suspension assembly in spring offset type rotary arm location mode - Google Patents
Primary suspension assembly in spring offset type rotary arm location mode Download PDFInfo
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- CN203543994U CN203543994U CN201320753992.6U CN201320753992U CN203543994U CN 203543994 U CN203543994 U CN 203543994U CN 201320753992 U CN201320753992 U CN 201320753992U CN 203543994 U CN203543994 U CN 203543994U
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- spring
- pivoted arm
- plate
- suspension assembly
- single stage
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- 239000000725 suspension Substances 0.000 title claims abstract description 48
- 229920001971 elastomer Polymers 0.000 claims abstract description 66
- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 239000000806 elastomer Substances 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 230000006978 adaptation Effects 0.000 claims description 7
- 238000005987 sulfurization reaction Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000003137 locomotive effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
The utility model discloses a primary suspension assembly in a spring offset type rotary arm location mode. The primary suspension assembly comprises a framework, a shaft housing, a primary spring mechanism and a rotary arm location rubber joint, wherein the framework is provided with a spring plate used for being connected with the primary spring mechanism, a top locating plate is fixedly arranged at one end, used for being connected with the spring plate, of a spring in the primary spring mechanism, the top locating plate is provided with a protrusive locating ring and a bolt hole used for being fixedly connected with the spring plate, the spring plate is provided with a locating through hole through which the locating ring can penetrate, and a locating groove fitted with the locating ring is formed in the position, corresponding to the locating through hole, of the framework. The spring location mode is more reliable, the spring is effectively prevented from moving transversely and longitudinally through mutual cooperation between the locating ring at the top of the spring and the locating groove in the framework, then the spring plate will not be driven by the spring to move transversely and longitudinally, and accordingly the edges of the spring plate are effectively prevented from warping.
Description
Technical field
The utility model relates to rail vehicle truck technical field, relates in particular to the single stage suspension assembly of a kind of spring offset pivoted arm location.
Background technology
Wheel is to adopting in the mode of pivoted arm location, traditional mode is arranged on coil spring directly over axle box center, this setup is called spring middle pivoted arm location, the feature of spring middle pivoted arm location is that vertical force can not directly be born in the pivoted arm positioning rubber joint of bogie truck, but in this kind of locate mode, one is that coil spring can take more dimensional space in vertical direction, is unfavorable for the reduction of truck side sill height; In order to address this problem, coil spring can be offset to certain distance setting from axial centre, this mode is called spring offset pivoted arm location.
In Fig. 9, shown the structure of at present typical spring offset pivoted arm location single stage suspension assembly, it is mainly comprised of framework 01, axle box 02, primary spring mechanism and pivoted arm positioning rubber joint 07, pivoted arm positioning joint is fixedly connected on framework 01 by pivoted arm positioning seat, and be also provided with pad for installing between the hold-down bolt of pivoted arm positioning seat and positioning seat, pivoted arm positioning rubber joint 07 and primary spring mechanism are separately positioned on the both sides of axle box 02, thus the application force of shared vertical direction.The rubber pad 06 that wherein primary spring mechanism specifically comprises the spring plate 03 on top, encloses spiral steel coil spring 05, is arranged on spring bottom for adjusting spring shim 04, the Dan Zushuan of vertical height, as shown in Figure 9.
Spring in this kind of spring offset pivoted arm location single stage suspension assembly is fixedly connected with spring plate, spring plate is fixedly connected with framework by bolt, because connecting, bolt inevitably exists tolerance clearance, thereby in the process of locomotive motion, spring plate is easily driven and moves along horizontal and vertical by spring, this can cause spring plate to occur alice, and the spring plate after alice will make locomotive rock aggravation, therefore need to carry out in time the replacing of spring plate.Often change spring plate and not only cause the maintenance cost of single stage suspension structure higher, and construction is complicated while changing spring plate, wastes time and energy.
Therefore, how can avoid the problem of the easy alice of spring plate in the single stage suspension assembly of spring offset pivoted arm location, to reduce maintenance cost, be the technical matters that current those skilled in the art need solution badly.
Utility model content
The purpose of this utility model is to provide the single stage suspension assembly of a kind of spring offset pivoted arm location, to solve the problem of the easy alice of spring plate in the single stage suspension assembly of current spring offset pivoted arm location, thereby reduces the maintenance cost of single stage suspension assembly.
For solving above-mentioned prior art problem, the single stage suspension assembly of the spring offset pivoted arm location that the utility model provides comprises framework, axle box primary spring mechanism and pivoted arm positioning rubber joint, on described framework, be provided with the spring plate for being connected with described primary spring mechanism, and the spring in described primary spring mechanism is fixedly installed top positioning plate for the one end being connected with described spring plate, and on described top positioning plate, be provided with protruding steady ring and the bolt hole for being fixedly connected with described spring plate, on described spring plate, be provided with the knock hole that can pass for described steady ring, and the position that described framework is corresponding with described knock hole is provided with the positioning groove with described steady ring adaptation.
Preferably, in above-mentioned single stage suspension assembly, also comprise the height adjustment pad being arranged between described spring plate and described top positioning plate, and on described height adjustment pad, there is the UU type opening that can pass for described steady ring.
Preferably, in above-mentioned single stage suspension assembly, on described height adjustment pad, also offer lightening hole.
Preferably, in above-mentioned single stage suspension assembly, locating plate bottom spring in described primary spring mechanism is also provided with for the one end being connected with described axle box, and be provided with knock hole on the locating plate of described bottom, on described axle box, be provided with the registration mast with described knock hole adaptation.
Preferably, in above-mentioned single stage suspension assembly, the spring in described primary spring mechanism is rubber-metal spiral complex spring.
Preferably, in above-mentioned single stage suspension assembly, between the top positioning plate of described spring and bottom locating plate, it is elastic portion, described elastic portion comprises rubber elastomer and vulcanizes with described rubber elastomer the metal spiral steel spring being integrated, and also comprises being integrated with its sulfuration and along the multiple sheetmetals of described axle of spring direction well-distributed in described rubber elastomer.
Preferably, in above-mentioned single stage suspension assembly, the spring in described primary spring mechanism is rubber spring, and in described rubber spring, also comprises and being integrated with its sulfuration and along the multiple sheetmetals of described rubber spring axis direction well-distributed.
Preferably, in above-mentioned single stage suspension assembly, described pivoted arm positioning rubber joint is fixedly linked by the first hold-down bolt and pivoted arm positioning seat, and described pivoted arm positioning seat is fixedly linked by the second hold-down bolt and described framework.
Preferably, in above-mentioned single stage suspension assembly, described the first hold-down bolt and the second hold-down bolt share same pad, and the two ends of described pad have bent stop edge.
Preferably, in above-mentioned single stage suspension assembly, described the first hold-down bolt is also arranged with the elastic positioning pin simultaneously embedding in described pivoted arm positioning seat and bolt hole corresponding to described pivoted arm positioning joint outward.
As can be seen from the above technical solutions, spring in primary spring mechanism in the single stage suspension assembly of spring offset pivoted arm disclosed in the utility model location is fixedly installed top positioning plate for the one end being connected with spring plate, and on top positioning plate, be provided with protruding steady ring and bolt hole for being fixedly connected with spring plate, on spring plate, be provided with the knock hole that can pass for steady ring, and framework is provided with in position corresponding to knock hole and the positioning groove of steady ring adaptation.
After installation, spring plate is bolted to connection on framework, and steady ring on the top positioning plate of spring is by the knock hole through on spring plate, and match with the positioning groove on framework, therefore the location of spring is by the steady ring on top positioning plate, to coordinate with positioning groove on framework to realize, and spring plate is only the location of assist spring, than the mode of only carrying out retainer spring in prior art by the tie bolt on spring plate, the spring locate mode providing in the utility model is more reliable, and cooperatively interacting of the positioning groove arranging on the steady ring by spring top and framework, can effectively prevent that spring from producing movement on horizontal and vertical, thereby spring plate also can not driven by spring and produce the movement on horizontal and vertical, thereby effectively avoid spring plate to produce alice, reduce the maintenance cost of single stage suspension assembly.
Accompanying drawing explanation
The single stage suspension assembly structure schematic diagram that Fig. 1 locates for the spring offset pivoted arm that the utility model embodiment provides;
Spring structure schematic diagram in the primary spring mechanism that Fig. 2 provides for the utility model one embodiment;
Fig. 3 is the overall schematic of the spring shown in Fig. 2;
Spring structure schematic diagram in the primary spring mechanism that Fig. 4 provides for another embodiment of the utility model;
Fig. 5 is the spring structure schematic diagram in the utility model primary spring mechanism that an embodiment provides again;
The structural representation of the spring plate that Fig. 6 provides for the utility model embodiment;
The structural representation of the height adjustment pad that Fig. 7 provides for the utility model embodiment;
The structural representation of the pad that Fig. 8 provides for the utility model embodiment;
Fig. 9 is the single stage suspension assembly structure schematic diagram of prior art medi-spring offset pivoted arm location.
Wherein, 1 is axle box, and 2 is spring plate, 3 is spring, and 4 is height adjustment pad, and 5 is one to be vertical bumper, 6 is one to be vertical backstop, 7 is pivoted arm positioning seat, and 8 is the second hold-down bolt, and 9 is seal ring, 10 is pad, 11 is the first hold-down bolt, and 12 is elastic positioning pin, and 13 is pivoted arm positioning rubber joint;
21 is positioning through hole, and 41 is UU type opening, and 42 is lightening hole, and 101 is the first stop edge, and 102 is the second stop edge.
The specific embodiment
The purpose of this utility model is to provide the single stage suspension assembly of a kind of spring offset pivoted arm location, to solve the problem of the easy alice of spring plate in the single stage suspension assembly of current spring offset pivoted arm location, thereby reduces the maintenance cost of single stage suspension assembly.
In order to make those skilled in the art person understand better scheme of the present utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 1, the single stage suspension assembly structure schematic diagram that Fig. 1 locates for the spring offset pivoted arm that the utility model embodiment provides.
The single stage suspension assembly (hereinafter to be referred as single stage suspension assembly) of the spring offset pivoted arm location providing in the utility model embodiment, comprise framework, axle box 1, primary spring mechanism and pivoted arm positioning rubber joint 13, consistent with prior art, this single stage suspension assembly comprises that one is that vertical bumper 5 and is vertical backstop 6, as shown in fig. 1, wherein on framework for primary spring mechanism install position on be bolted spring plate 2, and the spring 3 of primary spring mechanism is fixedly installed top positioning plate for the one end being connected with the spring plate 2 on framework, wherein on top positioning plate, be provided with protruding steady ring and the bolt hole for being fixedly connected with spring plate 2, it will be understood by those skilled in the art that, on spring plate 2, be also provided with the through hole corresponding with bolt hole on top positioning plate, and on spring plate 2, be provided with the positioning through hole 21 that can pass for steady ring, the position that framework is corresponding with positioning through hole 21 is also provided with the positioning groove with steady ring adaptation.
Please refer to Fig. 2, Fig. 4 and Fig. 5, spring top shown in figure is provided with top positioning plate, on top positioning plate, there is protruding steady ring, this steady ring is by the positioning through hole 21 through spring plate 2 middle parts shown in Fig. 6, and coordinate the location of the spring 3 of realizing in primary spring mechanism with the positioning groove on framework, bolt hole on spring plate 2 aligns with the bolt hole on top positioning plate, and logical bolt is connected.
As can be seen here, the location of spring 3 is mainly to realize by positioning groove set on the steady ring at its top and framework, and spring plate 2 is only the location of assist spring 3, than the mode of only carrying out retainer spring 3 in prior art by the tie bolt on spring plate 2, the spring locate mode providing in the utility model is more reliable, and cooperatively interacting of the positioning groove arranging on the steady ring by spring 3 tops and framework, can effectively prevent that spring 3 from producing movement on horizontal and vertical, thereby spring plate 2 also can not driven by spring 3 and produce the movement on horizontal and vertical, thereby effectively avoid spring plate 2 to produce alice, reduce the maintenance cost of single stage suspension assembly.
Need to describe, the vertical in the vertical direction that refers in the utility model embodiment, longitudinally refer in the horizontal direction and with the direction of locomotive axle line parallel, laterally refer in the horizontal direction and the direction vertical with locomotive axis.
In prior art, in order to realize framework, in vertical direction, realize highly adjusting, the wheel that need to fall increases or reduces the pad between spring plate and spring afterwards, this can increase difficulty of construction and engineering time to a great extent, for this reason, in the present embodiment, also between spring plate 2 and the top positioning plate of spring 3, be also provided with height adjustment pad 4, and on height adjustment pad 4, there is the UU type opening 41 that can pass for steady ring, please refer to Fig. 7, be in course of adjustment without the wheel that falls, after only needing the tie bolt between spring plate 2 and top positioning plate to unscrew, insertion by height adjustment pad 4 or extract and realize the quantitative increase of height adjustment pad 4 or minimizing, adjust complete after, tie bolt between spring plate 2 and top positioning plate is tightened again, a nearlyer step, in order to save material and to reduce weight, on height adjustment pad 4 in the present embodiment, also offer lightening hole 42, as shown in Figure 7, the shape of this lightening hole 42 is also set to UU type, and the periphery along above-mentioned UU type opening 41 arranges.
In order further to optimize the technical scheme in above-described embodiment, in the single stage suspension assembly that the present embodiment provides, spring 3 in primary spring mechanism is also provided with bottom locating plate for the one end (being bottom) being connected with axle box 1, and be provided with knock hole on the locating plate of bottom, accordingly, on axle box 1, the position corresponding with this knock hole is provided with and the registration mast of knock hole adaptation.
This kind of set-up mode can make the location, bottom of spring 3 more firm and firm, the setting position of the knock hole on spring 3 bottom locatings plate is unrestricted, preferred mode is the middle part that knock hole is arranged on to bottom locating plate, convenient making and installation, as shown in Figure 3.
In primary spring mechanism, general spring is Dan Zushuan circle spiral steel coil spring at present; but this kind of spring often there will be the inside and outside circle of spring to be in contact with one another wearing and tearing in actual moving process; cause spring to rupture; in the present embodiment, the spring in primary spring mechanism is optimized for this reason; because the spring in primary spring mechanism mainly bears vertical load and natural bow is provided; also provide simultaneously minimum longitudinally, cross-tie and torsion support; therefore in the present embodiment, this spring design is become to complex spring, be specially rubber-metal spiral complex spring.
Please refer to Fig. 2 and Fig. 3, it in Fig. 2 and Fig. 3, is the structural representation of complex spring in a kind of embodiment, concrete, this complex spring comprises top positioning plate 31 and bottom locating plate 36, on top positioning plate, be provided with steady ring 30, on the locating plate of bottom, be provided with knock hole 35, and be the elastic portion of spring between top positioning plate 31 and bottom locating plate 36, the elastic portion of complex spring comprises rubber elastomer 32 and vulcanizes with rubber elastomer 32 the metal spiral steel spring 33 being integrated, as shown in Figure 2, and in rubber elastomer 32, also comprise and being integrated with its sulfuration and along well-distributed multi-disc sheetmetal 34 on the axis direction of spring.Metal spiral steel spring 33 is for carrying main vertical load, rubber elastomer 32 bears part vertical load, and rubber elastomer 32 also has the function of vibration-absorbing and reducing noise, both sulfide the Linear Stability that can strengthen primary spring mechanism medi-spring, also have the damping force characteristics of rubber spring simultaneously.
Further, in another embodiment of the utility model, also considered the embodiment of another rubber-metal spiral complex spring, as shown in Figure 5, the spring providing in this embodiment is out of shape the elastic portion of the spring providing in above-described embodiment, concrete, this spring also comprises top positioning plate 301 and bottom locating plate 306, and on top positioning plate 301, be also provided with steady ring 300, on the locating plate 306 of bottom, be provided with knock hole 305, the elastic portion of this spring specifically comprises rubber elastomer 302 and vulcanizes with rubber elastomer 302 the metal spiral steel spring 303 being integrated, and rubber elastomer 302 is along having multiple uniform sections on the axis direction of spring, and each sections is drum type sections, as shown in Figure 5.
Certainly, in the situation that meeting requirement of strength, spring in primary spring mechanism can also adopt rubber spring, the rubber spring providing in this embodiment of the utility model specifically comprises the top positioning plate 3b identical with structure in above-described embodiment and bottom locating plate 3e, and on top positioning plate 3b, be provided with steady ring 3a, on the locating plate 3e of bottom, be provided with knock hole, the elastic portion of this spring is rubber elastomer 3c and vulcanizes with rubber elastomer 3c the multiple sheetmetal 3d that are integrated, as shown in Figure 4, sheetmetal 3d is configured to an annular metal sheet, multiple sheetmetal 3d are uniformly distributed along the axis direction of spring, and the edge of the rubber elastomer 3c between adjacent two sheetmetal 3d is arcs of recesses round-corner transition.
Pivoted arm positioning rubber joint 13 in the utility model embodiment is fixedly fitted in axle box 1, and be fixedly connected with pivoted arm positioning seat 7 by the first hold-down bolt 11, on pivoted arm positioning seat 7, be also provided with the second hold-down bolt 8 simultaneously pivoted arm positioning seat 7 and framework are fixedly linked, as shown in fig. 1.
What need to describe is, the pivoted arm positioning rubber joint 13 providing in the utility model has very low torsional stiffness and deflection stiffness, torsional stiffness and deflection stiffness are about 100Nm～220Nm/ °, lower torsional stiffness can reduce the vertical stiffness of single stage suspension assembly, thereby reduces wheel-rail force; Lower deflection stiffness can be realized wheel to passing through flexibly curve, and has lower wheeling edge wearing.
Please refer to Fig. 1, in the single stage suspension assembly providing in the present embodiment, the first hold-down bolt 11 and the second hold-down bolt 8 share same pad 10, the structure of pad 10 as shown in Figure 8, this pad 10 comprises gasket body and is arranged in gasket body the through hole passing for the first hold-down bolt 11 and the second hold-down bolt 8, and the two ends of pad 10 are also provided with bent stop edge, and every one end of pad 10 comprises two mutual vertically disposed braking limits, one of them stop edge is parallel with gasket body, this stop edge is the first stop edge 101, another stop edge is vertical with gasket body to be arranged, this stop edge is the second stop edge 102, after installation, the first stop edge 101 is rolled over downwards and is adjacent to pivoted arm positioning seat 7 outer side edges, the second stop edge 102 bends and is adjacent to the pane of the second hold-down bolt 8 along the second hold-down bolt 8, this pad 10 can effectively prevent the loosening of the second hold-down bolt 8.
Further, outside for the first hold-down bolt 11 of connecting pivoted arm positioning rubber joint 13 and pivoted arm positioning seat 7 in the present embodiment is also arranged with elastic positioning pin 12, elastic positioning pin 12 embeds in the bolt hole of pivoted arm positioning seat 7 and pivoted arm positioning rubber joint 13 correspondences, as shown in fig. 1 simultaneously.
Preferably, between pivoted arm positioning seat 7 and framework, be also provided with for waterproof and dustproof and locking seal ring 9, seal ring 9 by the clearance control between pivoted arm positioning seat 7 and framework between 3mm-5mm, thereby the adjustable elastic location of realizing framework and pivoted arm positioning seat 7.
As can be seen here, the single stage suspension assembly structure providing in the utility model embodiment is simple, and it is more reasonable to design, and easy to maintenance; Than helical steel springs, the noise of complex spring is lower, and the problem that does not exist spring Internal and external cycle to interfere, the increase of top steady ring and bottom knock hole, avoid the distortion of primary spring mechanism medi-spring, improved the safety of bogie truck dynamic performance and operation.
Applied specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (10)
1. the single stage suspension assembly of a spring offset pivoted arm location, comprise framework, axle box (1), primary spring mechanism and pivoted arm positioning rubber joint (13), on described framework, be provided with the spring plate (2) for being connected with described primary spring mechanism, it is characterized in that, spring (3) in described primary spring mechanism is fixedly installed top positioning plate for the one end being connected with described spring plate (2), and on described top positioning plate, be provided with protruding steady ring and the bolt hole for being fixedly connected with described spring plate (2), on described spring plate (2), be provided with the positioning through hole (21) that can pass for described steady ring, and the position that described framework is corresponding with described positioning through hole (21) is provided with the positioning groove with described steady ring adaptation.
2. the single stage suspension assembly of spring offset pivoted arm according to claim 1 location, it is characterized in that, also comprise the height adjustment pad (4) being arranged between described spring plate (2) and described top positioning plate, and on described height adjustment pad (4), there is the U-shaped opening (41) that can pass for described steady ring.
3. the single stage suspension assembly of spring offset pivoted arm according to claim 2 location, is characterized in that, also offers lightening hole (42) on described height adjustment pad (4).
4. the single stage suspension assembly of spring offset pivoted arm according to claim 1 location, it is characterized in that, spring (3) in described primary spring mechanism is also provided with bottom locating plate for the one end being connected with described axle box (1), and on the locating plate of described bottom, be provided with knock hole, on described axle box (1), be provided with the registration mast with described knock hole adaptation.
5. the single stage suspension assembly of spring offset pivoted arm according to claim 4 location, is characterized in that, the spring (3) in described primary spring mechanism is rubber-metal spiral complex spring.
6. the single stage suspension assembly of spring offset pivoted arm according to claim 5 location, it is characterized in that, between the top positioning plate of described spring (3) and bottom locating plate, it is elastic portion, described elastic portion comprises rubber elastomer and vulcanizes with described rubber elastomer the metal spiral steel spring being integrated, and also comprises being integrated with its sulfuration and along the multiple sheetmetals of described axle of spring direction well-distributed in described rubber elastomer.
7. the single stage suspension assembly of spring offset pivoted arm according to claim 4 location, it is characterized in that, spring (3) in described primary spring mechanism is rubber spring, and in described rubber spring, also comprises and being integrated with its sulfuration and along the multiple sheetmetals of described rubber spring axis direction well-distributed.
8. the single stage suspension assembly of spring offset pivoted arm according to claim 1 location, it is characterized in that, described pivoted arm positioning rubber joint (13) is fixedly linked by the first hold-down bolt (11) and pivoted arm positioning seat (7), and described pivoted arm positioning seat (7) is fixedly linked by the second hold-down bolt (8) and described framework.
9. the single stage suspension assembly of spring offset pivoted arm according to claim 8 location, it is characterized in that, described the first hold-down bolt (11) and the second hold-down bolt (8) share same pad (10), and the two ends of described pad (10) have bent stop edge.
10. the single stage suspension assembly of spring offset pivoted arm according to claim 8 location, it is characterized in that the outer elastic positioning pin (12) being also arranged with in the bolt hole that simultaneously embeds described pivoted arm positioning seat (7) and described pivoted arm positioning joint (13) correspondence of described the first hold-down bolt (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320753992.6U CN203543994U (en) | 2013-11-25 | 2013-11-25 | Primary suspension assembly in spring offset type rotary arm location mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320753992.6U CN203543994U (en) | 2013-11-25 | 2013-11-25 | Primary suspension assembly in spring offset type rotary arm location mode |
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| Publication Number | Publication Date |
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| CN203543994U true CN203543994U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320753992.6U Expired - Lifetime CN203543994U (en) | 2013-11-25 | 2013-11-25 | Primary suspension assembly in spring offset type rotary arm location mode |
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| CN (1) | CN203543994U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600749A (en) * | 2013-11-25 | 2014-02-26 | 南车株洲电力机车有限公司 | Primary suspension assembly with spring biased and rocker arm positioned |
-
2013
- 2013-11-25 CN CN201320753992.6U patent/CN203543994U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600749A (en) * | 2013-11-25 | 2014-02-26 | 南车株洲电力机车有限公司 | Primary suspension assembly with spring biased and rocker arm positioned |
| CN103600749B (en) * | 2013-11-25 | 2016-12-07 | 南车株洲电力机车有限公司 | A kind of single stage suspension assembly of spring offset pivoted arm location |
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