CN207163802U - A kind of low resistance slide rail for shock response spectrum testing stand - Google Patents
A kind of low resistance slide rail for shock response spectrum testing stand Download PDFInfo
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- CN207163802U CN207163802U CN201720903504.3U CN201720903504U CN207163802U CN 207163802 U CN207163802 U CN 207163802U CN 201720903504 U CN201720903504 U CN 201720903504U CN 207163802 U CN207163802 U CN 207163802U
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- straight line
- slide rail
- low resistance
- testing stand
- response spectrum
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Abstract
The utility model discloses a kind of low resistance slide rail for shock response spectrum testing stand, the low resistance slide rail includes a pair of linear axis, straight line hydrostatic bearing, high-pressure pump this pump, it is arranged straight line hydrostatic bearing on the pair of linear axis respectively, the both sides of the impact head mass bottom in shock response spectrum testing stand are fixed on straight line hydrostatic bearing；The impact head mass exports hydraulic oil with the oil circuit secret tunnel that connects, described this pump of high-pressure pump is provided with straight line hydrostatic bearing to oil circuit secret tunnel.The utility model hydraulic oil causes static-pressure linear bearing cathetus axle to float, film lubrication is relied in motion process, the friction between material can be avoided to reduce kinetic damping in motion process, reduce drift energy loss in motion process, under same impact Pneumatic pressure, impact peak value can increase, and be approximately more than 1.2 times of U-rail impact peak value in the prior art.
Description
Technical field
The utility model belongs to technical field of test equipment, and in particular to a kind of low-resistance for shock response spectrum testing stand
Buddhist nun's slide rail.
Background technology
In environmental mechanicses experiment, impact test mainly examines the function adaptability and Structural integrity of product, shock response
Spectrum is wherein indispensable branch, is mainly partial to examine the integrity of product structure.In recent years, as product quality requires
Increasingly raising, the examination of Product environment adaptability is also further harsh, and mechanical test magnitude increasing degree is especially apparent；Before
Shock response spectrum testing stand is simulated by Charpy impact more, but due to pendulum limited quality, pendulum swing angle is limited (can not
More than 180 °), therefore impact energy is relatively low, general peak acceleration is limited simultaneously not over 4000g, frequency response.
Present shock response spectrum experiment magnitude is maximum to be up to 8000Hz, traditional pendulum up to 15000g, frequency response
Formula shock testing machine can not meet to require, so using Pneumatic immpacting response spectra testing stand mostly now, can adjust air pressure, increase
Drift initial velocity completes big magnitude shock response spectrum experiment, and in impact, drift needs certain stroke, so drift is necessary
Equipped with motion guide rail, for drift, energy loss is small during work(is transported, and present aerodynamic response composes shock table drift guide rail
Using trapezoidal or U-shaped rails.
Trapezoidal rails drift is spacing by trapezoidal rails, with grease lubrication, is run in trapezoidal rails, so lubrication effect
Fruit is poor, and damping is larger, and punch energy loss is larger in impact process；And U-shaped rails are trapezoidal rails upgradings, in drift quality
Block respectively fills four pulleys up and down, and sliding bearing uses roller bearing type, enhances the anti-disturbing moment ability of wheel to a certain extent, but
Such slide rail, grease lubrication is equally used, is moved by wheel in U-rail, damping is than trapezoidal track
Reduce, but be not optimal slide rail mode；Because in impact, the speed of drift is typically in 7m/s~20m/s, drift fortune
Dynamic speed is fast, if stuck or damage occurs in unilateral wheel bearing in traveling process, can directly destroy U-shaped rails and wheel installation
Support；Or as wheel frequently uses, bearing lubrication performance reduces, and can also increase kinetic damping, or even break down.
Utility model content
In view of this, main purpose of the present utility model is to provide a kind of low resistance for shock response spectrum testing stand
Slide rail.
To reach above-mentioned purpose, what the technical solution of the utility model was realized in：
The utility model embodiment provides a kind of low resistance slide rail for shock response spectrum testing stand, the low resistance slide rail
Including a pair of linear axis, straight line hydrostatic bearing, high-pressure pump this pump, straight line hydrostatic bearing is arranged respectively on the pair of linear axis,
The both sides of impact head mass bottom in shock response spectrum testing stand are fixed on straight line hydrostatic bearing；The impact head quality
Block exports hydraulic oil with the oil circuit secret tunnel that connects, described this pump of high-pressure pump is provided with straight line hydrostatic bearing to oil circuit secret tunnel.
In such scheme, the fuel feed hole of the oil circuit secret tunnel of the impact head mass is located at rear side side, and passes through high pressure
Oil pipe is connected with high-pressure oil pipe.
In such scheme, the high-pressure oil pipe is consistent with the drift direction of motion with the direction of high-pressure oil pipe.
In such scheme, the straight line hydrostatic bearing that the both sides of the impact head mass bottom are fixed be arranged in parallel.
In such scheme, oil-recovery tank is reserved with below the low resistance slide rail.
In such scheme, bedding has oil strain sponge to be used for the oil for preventing impurity from entering this pump of high-pressure pump above the oil-recovery tank
Case.
In such scheme, the oil inlet of oil circuit secret tunnel and oil circuit secret tunnel in impact head mass in the straight line hydrostatic bearing
Oil-out between be provided with O-ring sealing；The oil-out of oil circuit secret tunnel is located at straight line static pressure axle in the straight line hydrostatic bearing
Hold madial wall.
In such scheme, the both sides of the impact head mass bottom in the shock response spectrum testing stand are fixed by closely-pitched
Screw is fixed on straight line hydrostatic bearing.
Compared with prior art, the beneficial effects of the utility model：
The utility model hydraulic oil causes static-pressure linear bearing cathetus axle to float, and moistens in motion process by oil film
It is sliding, the friction between material can be avoided in motion process so as to reduce kinetic damping, reduced drift energy in motion process and damaged
Consumption, under same impact Pneumatic pressure, impact peak value can increase, and be approximately 1.2 times of U-rail impact peak value in the prior art
More than.
Brief description of the drawings
Fig. 1 provides a kind of structure of the low resistance slide rail for shock response spectrum testing stand for the utility model embodiment and shown
It is intended to；
Fig. 2 for the utility model embodiment provide in a kind of low resistance slide rail for shock response spectrum testing stand a pair it is straight
The structural representation of bobbin and straight line hydrostatic bearing；
It is quiet that Fig. 3 for the utility model embodiment provides a kind of low resistance slide rail cathetus for shock response spectrum testing stand
The structural representation that last item is held.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
The utility model embodiment provides a kind of low resistance slide rail for shock response spectrum testing stand, as Figure 1-3,
The low resistance slide rail includes a pair of linear axis 1, straight line hydrostatic bearing 2, high-pressure pump this pump 3, is covered respectively on the pair of linear axis 1
If straight line hydrostatic bearing 2, the both sides of the bottom of impact head mass 4 in shock response spectrum testing stand are fixed on straight line hydrostatic bearing
On 2；The impact head mass 4 be provided with the oil circuit secret tunnel 5 that connects in straight line hydrostatic bearing 2, described this pump of high-pressure pump 3 to
Oil circuit secret tunnel 5 export hydraulic oil, so, hydraulic oil causes the cathetus axle 1 of static-pressure linear bearing 2 to float, in motion process according to
The friction between material can be avoided by film lubrication, in motion process so as to reduce kinetic damping, reduces drift in motion process
Middle energy loss, under same impact Pneumatic pressure, impact peak value can increase, be approximately in the prior art U-rail impact peak
More than 1.2 times of value.
The material of main part of the static-pressure linear bearing 2 is aluminium, and weight is relatively light, because aluminium material surface intensity is not high,
After machining, in material surface hard chrome plating, increase material surface intensity；In sleeve central bore end face, it is wide that shaping mills out one
5mm depths 5mm V-type oil groove, and require that the gap between linear axis and sleeve central bore is not more than 0.02mm, to ensure high pressure
Pressure is positively retained at 1.8MPa and can float linear axis 1 when oil sources is to 2 fuel feeding of hydrostatic bearing, formed between axle sleeve it is thin and
Uniform oil film.
The fuel feed hole of the oil circuit secret tunnel 5 of the impact head mass 4 is located at rear side side, and passes through high-pressure oil pipe 7 and height
Pressuring oil pipe 6 connects, and so, enough spaces is reserved to drift initial velocity for air rammer.
The high-pressure oil pipe 6 is consistent with the drift direction of motion with the direction of high-pressure oil pipe 7, can so avoid percussion
Impact shear power to joint.
The straight line hydrostatic bearing 2 that the both sides of the bottom of impact head mass 4 are fixed be arranged in parallel, for keeping drift
Steadily.
Oil-recovery tank is reserved with below the low resistance slide rail, the wear-resistant hydraulic pressure that the overflow of static-pressure linear bearing 2 goes out is accepted in recovery
Oil.
Bedding has oil strain sponge to be used to preventing impurity from entering the fuel tank of high-pressure pump this pump 3 above the oil-recovery tank, and fuel tank holds
Amount is suggested using 30L is more than, because the high pressure fuel source flow used is 10L/min.
In the straight line hydrostatic bearing 2 oil inlet 8 of oil circuit secret tunnel 5 with impact head mass 4 oil circuit secret tunnel 5 it is fuel-displaced
O-ring sealing 9 is provided between mouthful；The oil-out of oil circuit secret tunnel 5 is located at straight line hydrostatic bearing 2 in the straight line hydrostatic bearing 2
Madial wall.
The both sides of the bottom of impact head mass 4 in the shock response spectrum testing stand are fixed on by closely-pitched fixing screws
On straight line hydrostatic bearing 2
It is described above, preferred embodiment only of the present utility model, it is not intended to limit protection of the present utility model
Scope.
Claims (8)
1. a kind of low resistance slide rail for shock response spectrum testing stand, it is characterised in that the low resistance slide rail is straight including a pair
Bobbin, straight line hydrostatic bearing, high-pressure pump this pump, straight line hydrostatic bearing, shock response spectrum are arranged respectively on the pair of linear axis
The both sides of impact head mass bottom in testing stand are fixed on straight line hydrostatic bearing；The impact head mass and straight line are quiet
Last item holds the interior oil circuit secret tunnel for being provided with connection, and described this pump of high-pressure pump exports hydraulic oil to oil circuit secret tunnel.
2. a kind of low resistance slide rail for shock response spectrum testing stand according to claim 1, it is characterised in that described
The fuel feed hole of the oil circuit secret tunnel of impact head mass is located at rear side side, and is connected by high-pressure oil pipe with high-pressure oil pipe.
3. a kind of low resistance slide rail for shock response spectrum testing stand according to claim 2, it is characterised in that described
High-pressure oil pipe is consistent with the drift direction of motion with the direction of high-pressure oil pipe.
A kind of 4. low resistance slide rail for shock response spectrum testing stand according to claim 1 or 2, it is characterised in that
The straight line hydrostatic bearing that the both sides of the impact head mass bottom are fixed be arranged in parallel.
5. a kind of low resistance slide rail for shock response spectrum testing stand according to claim 1, it is characterised in that described
Oil-recovery tank is reserved with below low resistance slide rail.
6. a kind of low resistance slide rail for shock response spectrum testing stand according to claim 5, it is characterised in that described
Bedding has oil strain sponge to be used for the fuel tank for preventing impurity from entering this pump of high-pressure pump above oil-recovery tank.
7. a kind of low resistance slide rail for shock response spectrum testing stand according to claim 1, it is characterised in that described
In straight line hydrostatic bearing O-ring is provided with the oil inlet of oil circuit secret tunnel and impact head mass between the oil-out of oil circuit secret tunnel
Sealing；The oil-out of oil circuit secret tunnel is located at straight line hydrostatic bearing madial wall in the straight line hydrostatic bearing.
8. a kind of low resistance slide rail for shock response spectrum testing stand according to claim 1, it is characterised in that described
The both sides of impact head mass bottom in shock response spectrum testing stand are fixed on straight line hydrostatic bearing by closely-pitched fixing screws
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720903504.3U CN207163802U (en) | 2017-07-25 | 2017-07-25 | A kind of low resistance slide rail for shock response spectrum testing stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720903504.3U CN207163802U (en) | 2017-07-25 | 2017-07-25 | A kind of low resistance slide rail for shock response spectrum testing stand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207163802U true CN207163802U (en) | 2018-03-30 |
Family
ID=61714249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720903504.3U Active CN207163802U (en) | 2017-07-25 | 2017-07-25 | A kind of low resistance slide rail for shock response spectrum testing stand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207163802U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458094A (en) * | 2020-04-15 | 2020-07-28 | 北京卫星环境工程研究所 | Pendulum impact test table surface structure with lubricating guide rail device |
-
2017
- 2017-07-25 CN CN201720903504.3U patent/CN207163802U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458094A (en) * | 2020-04-15 | 2020-07-28 | 北京卫星环境工程研究所 | Pendulum impact test table surface structure with lubricating guide rail device |
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