CN105352749A - Vertical auxiliary loading device for bogie frame strength test - Google Patents
Vertical auxiliary loading device for bogie frame strength test Download PDFInfo
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- CN105352749A CN105352749A CN201510822211.8A CN201510822211A CN105352749A CN 105352749 A CN105352749 A CN 105352749A CN 201510822211 A CN201510822211 A CN 201510822211A CN 105352749 A CN105352749 A CN 105352749A
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Abstract
The invention relates to a vertical auxiliary loading device for a bogie frame strength test, and belongs to the field of auxiliary loading devices for railway vehicle bogie frame strength tests. According to the invention, the vertical auxiliary loading device equivalently transfers an originally small vertical hydraulic actuator pressure loading torque to the outer side of an original vertical loading test stand through using a lever revolving arm and an L-shaped actuator connector in a matched manner so as to overcome a problem that a hydraulic actuator cannot load because of insufficient space. A spherical pair principle of a joint bulb arranged inside a connecting base can ensure that pressure of the hydraulic actuator is still kept to be vertically loaded to the lower end face of a stress loading point of a tested component in the vertical direction, thereby not influencing the precision of a test result. Usage of the lever revolving arm can significantly reduce configuration requirements of a rated driving force of the hydraulic actuator, thereby realizing the effects of reducing the test difficulty and saving the actuator purchase cost. In addition, the vertical auxiliary loading device also has the advantages of simple and practical structure, low cost, convenient popularization and the like.
Description
Technical field
The invention belongs to the secondary load device field of bogies for railway vehicles framed intensity test, be specifically related to a kind of vertical secondary load device of bogie frame strength test.
Background technology
Bogie frame due to rolling stock is the core component of bearing body weight, transmitting tractive power and brake power, after its Theoretical Design completes, usually also needs to carry out density of load test to the bogie frame of primiparity.Framed intensity test comprises test of static strength and Stromeyer test, test of static strength checks framework whether can produce permanent strain under the compound action of theoretical maximum load by carrying out static stress loading test to framework, Stromeyer test is then the comprehensive force environment that continuous analog train bears under normal running environment, to verify the rationality of bogie frame mechanical structure, by obtaining the dynamic stress data of critical component and checking whether framework can produce fatigue crack, undiscovered tired risk point in further identification test of static strength, and provide reference frame for Curve guide impeller.
As shown in Figure 1, force driving element when strength test adopts hydraulic actuator 5 to do straight reciprocating motion as load(ing) point 7 stressed on unit under test usually, its top and bottom are connected with UUT respectively by the Connection Block 6 being built-in with joint ball head, or be connected with the iron bottom plate of testing table, to play the effect of driving force applying or damper.In addition, Connection Block 6 is divided into multiple different type usually, to adapt to the different situations that coaxial rotation connection, stud connection or planar end dock respectively.
On the other hand, the actuator bracket loading test platform of bogies for railway vehicles framed intensity test is once assembling is fixing, its inner solid space is then determined constant, and all actuators in underproof framework and each orientation thereof all only has the spatial attitude of unique locus and mutual coupling.But, the train bogie made a strength test is needed but to comprise multiple different model, and dimensional structure is larger along the difference on vertically vertical, this often causes the actuator bracket loading test platform of the framed intensity test being applicable to a kind of rain model, although space is in the horizontal direction abundant, without the need to adjustment, but it still cannot adapt to the Plumb load demand of another different model bogie, causes whole Plumb load testing table all to need readjust height and position and ressemble.Especially, when there is the novel low-floor bogie that vertical thickness is less or centroidal distance ground is lower, even there will be Plumb load testing table cannot reduce further, and the shortest its length H of hydraulic actuator 5 is still greater than the difficult situation of the ultimate range D on unit under test between stressed load(ing) point 7 and Plumb load testing table iron bottom plate 8, set up hole groove unless caused further in iron bottom plate relevant position, otherwise cannot be just that hydraulic actuator 5 mates and is loaded into the situation on unit under test.
Summary of the invention
In order to the Plumb load testing table solving existing bogie frame strength test needs frequent adjustment height to adapt to the vertical intensity test loading demand of the bogie frame of different model, and when and special, on the novel low-floor bogie that the minimum loading of Plumb load testing table is highly still greater than needs test, Plumb load point is to the ultimate range on ground, even if cause the length of the shortest hydraulic actuator to be still greater than the situation of the ultimate range on unit under test between stressed load(ing) point and testing table iron floor, cause the technical matters that vertical intensity load test cannot be carried out, the invention provides a kind of vertical secondary load device of bogie frame strength test.
The technical scheme that technical solution problem of the present invention is taked is as follows:
The vertical secondary load device of bogie frame strength test, it comprises shaft seating, lever pivoted arm, L-type actuator web member and rotating shaft, and described shaft seating is vertically placed, and the iron bottom plate of its lower end and Plumb load testing table is connected; Lever pivoted arm horizontal positioned, it comprises lever leading portion, lever back segment and balance pivot, and balance pivot is connected by the upper axis of rotating shaft and shaft seating; Described L-type actuator web member comprises integrated vertical section and horizontal boom, the lower end of vertical section is fixed on the upper surface of lever leading portion end, and the horizontal boom of L-type actuator web member extends to form cantilever further laterally along the extending direction of lever leading portion end.
Described lever leading portion is the long end of lever, and lever back segment is the short end of lever, and the length of lever leading portion is more than or equal to the length of lever back segment; The end of described lever back segment is provided with the first mount pad of vertical direction; The lower surface of horizontal boom front end is provided with the second mount pad.
The invention has the beneficial effects as follows: the vertical secondary load device of this bogie frame strength test by will have lever pivoted arm and L-type actuator web member with the use of, thus originally less vertical hydraulic actuator pressure-loaded moment equivalence is transferred to the outside of original Plumb load testing table, and then solves and cause hydraulic actuator cannot load the old technical matters cannot carried out with vertical intensity load test because of insufficient space.The spherical pair principle of the joint ball head that Connection Block is built-in can guarantee that power hydraulic actuator pressure direction still keeps vertically being loaded on the lower surface of stressed load(ing) point on unit under test with vertical direction, therefore can not affect the precision of experimental test result.The use of lever pivoted arm significantly can reduce the configuration needs to hydraulic actuator nominal drive power, thus realizes the effect reducing test difficulty and saving actuator purchase cost.In addition the vertical secondary load device of this bogie frame strength test also has simple and practical, easy to operate, with low cost, is convenient to advantages such as popularizing.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing hydraulic actuator and the Connection Block being built-in with joint ball head;
The stereographic map of the vertical secondary load device of Fig. 2 bogie frame of the present invention strength test;
Fig. 3 is the application schematic diagram of the vertical secondary load device of bogie frame strength test of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details.
As shown in Figure 2 to Figure 3, the vertical secondary load device of bogie frame strength test of the present invention comprises shaft seating 1, lever pivoted arm 2, L-type actuator web member 3 and rotating shaft 4, shaft seating 1 is vertically placed, and the iron bottom plate 8 of its lower end and Plumb load testing table is connected.Lever pivoted arm 2 horizontal positioned, it comprises lever leading portion 2-1, lever back segment 2-2 and balance pivot 2-3, and balance pivot 2-3 is connected by the upper axis of rotating shaft 4 with shaft seating 1.L-type actuator web member 3 comprises integrated vertical section 3-1 and horizontal boom 3-2, the lower end of vertical section 3-1 is fixed on the upper surface of lever leading portion 2-1 end, and the horizontal boom 3-2 of L-type actuator web member 3 extends to form cantilever further laterally along the extending direction of lever leading portion 2-1 end.
Lever leading portion 2-1 is the long end of lever, lever back segment 2-2 is the short end of lever, the length of the length >=lever back segment 2-2 of lever leading portion 2-1, can change the arm of force of lever construction by the length ratio adjusted both it, thus reduces the configuration needs to hydraulic actuator 5 nominal drive power.The end of lever back segment 2-2 is provided with the first mount pad 2-2-1 of vertical direction, and it is for being connected with by face type Connection Block 6 and stressed load(ing) point 7 on unit under test.The lower surface of horizontal boom 3-2 front end be provided with the second mount pad 3-2-1 its for being connected with the upper end of hydraulic actuator 5 with by another face type Connection Block 6.
During the vertical secondary load device of embody rule bogie frame of the present invention strength test, first mount pad 2-2-1 of lever back segment 2-2 end is connected by a face type Connection Block 6 and stressed load(ing) point 7 on unit under test, again the second mount pad 3-2-1 of horizontal boom 3-2 front end is connected with the upper end of hydraulic actuator 5 by another face type Connection Block 6, again the lower end of hydraulic actuator 5 and Plumb load testing table iron bottom plate 8 are connected, the lateral pressure of hydraulic actuator 5 can be realized to be loaded on the lower surface of stressed load(ing) point 7 on unit under test along the vertical secondary load device transmission of bogie frame strength test of the present invention, thus the lateral pressure indirectly completing hydraulic actuator 5 loads.Under the spherical pair effect of the built-in joint ball head of Connection Block 6, on the upper end of hydraulic actuator 5 and unit under test, the stress direction of the lower surface of stressed load(ing) point 7 is all still along vertical back transfer, therefore can not affect the precision of experimental test result because producing should itemizing of other direction.
Claims (2)
1. the vertical secondary load device of bogie frame strength test, it is characterized in that: this device comprises shaft seating (1), lever pivoted arm (2), L-type actuator web member (3) and rotating shaft (4), described shaft seating (1) is vertically placed, and the iron bottom plate (8) of its lower end and Plumb load testing table is connected; Lever pivoted arm (2) horizontal positioned, it comprises lever leading portion (2-1), lever back segment (2-2) and balance pivot (2-3), and balance pivot (2-3) is connected by the upper axis of rotating shaft (4) with shaft seating (1); Described L-type actuator web member (3) comprises integrated vertical section (3-1) and horizontal boom (3-2), the lower end of vertical section (3-1) is fixed on the upper surface of lever leading portion (2-1) end, and the horizontal boom (3-2) of L-type actuator web member (3) extends to form cantilever further laterally along the extending direction of lever leading portion (2-1) end.
2. the vertical secondary load device of bogie frame strength test as claimed in claim 1, it is characterized in that: described lever leading portion (2-1) is the long end of lever, lever back segment (2-2) is the short end of lever, and the length of lever leading portion (2-1) is more than or equal to the length of lever back segment (2-2); The end of described lever back segment (2-2) is provided with first mount pad (2-2-1) of vertical direction; The lower surface of horizontal boom (3-2) front end is provided with the second mount pad (3-2-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510822211.8A CN105352749A (en) | 2015-11-24 | 2015-11-24 | Vertical auxiliary loading device for bogie frame strength test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510822211.8A CN105352749A (en) | 2015-11-24 | 2015-11-24 | Vertical auxiliary loading device for bogie frame strength test |
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| Publication Number | Publication Date |
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| CN105352749A true CN105352749A (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510822211.8A Pending CN105352749A (en) | 2015-11-24 | 2015-11-24 | Vertical auxiliary loading device for bogie frame strength test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709483A (en) * | 2018-07-19 | 2018-10-26 | 慈兴集团有限公司 | A kind of ball screw end-play test device |
| CN109297694A (en) * | 2018-10-09 | 2019-02-01 | 株洲时代新材料科技股份有限公司 | A kind of anti-side rolling torsion rod fatigue experimental device and method |
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| WO2001081147A1 (en) * | 2000-04-19 | 2001-11-01 | Deutsche Bahn Ag | Method for monitoring driving characteristics of a rail vehicle |
| CN1405542A (en) * | 2002-11-08 | 2003-03-26 | 清华大学 | Passenger vehicle body structure torsion rigid test restraining and loading device |
| CN103234810A (en) * | 2013-04-24 | 2013-08-07 | 南车株洲电力机车有限公司 | Supporting device for vehicle static strength test |
| CN104406803A (en) * | 2014-11-20 | 2015-03-11 | 长春轨道客车股份有限公司 | Auxiliary loading device for bogie frame strength test |
| CN205280385U (en) * | 2015-11-24 | 2016-06-01 | 长春轨道客车股份有限公司 | Bogie frame pressure test's vertical supplementary loading device |
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2015
- 2015-11-24 CN CN201510822211.8A patent/CN105352749A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001081147A1 (en) * | 2000-04-19 | 2001-11-01 | Deutsche Bahn Ag | Method for monitoring driving characteristics of a rail vehicle |
| CN1405542A (en) * | 2002-11-08 | 2003-03-26 | 清华大学 | Passenger vehicle body structure torsion rigid test restraining and loading device |
| CN103234810A (en) * | 2013-04-24 | 2013-08-07 | 南车株洲电力机车有限公司 | Supporting device for vehicle static strength test |
| CN104406803A (en) * | 2014-11-20 | 2015-03-11 | 长春轨道客车股份有限公司 | Auxiliary loading device for bogie frame strength test |
| CN205280385U (en) * | 2015-11-24 | 2016-06-01 | 长春轨道客车股份有限公司 | Bogie frame pressure test's vertical supplementary loading device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709483A (en) * | 2018-07-19 | 2018-10-26 | 慈兴集团有限公司 | A kind of ball screw end-play test device |
| CN108709483B (en) * | 2018-07-19 | 2024-04-19 | 慈兴集团有限公司 | Axial play testing device of ball screw |
| CN109297694A (en) * | 2018-10-09 | 2019-02-01 | 株洲时代新材料科技股份有限公司 | A kind of anti-side rolling torsion rod fatigue experimental device and method |
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Application publication date: 20160224 |