CN204985470U - Elasticity support structure - Google Patents
Elasticity support structure Download PDFInfo
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- CN204985470U CN204985470U CN201520494669.0U CN201520494669U CN204985470U CN 204985470 U CN204985470 U CN 204985470U CN 201520494669 U CN201520494669 U CN 201520494669U CN 204985470 U CN204985470 U CN 204985470U
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Abstract
The utility model provides an elasticity support structure, including the bearing area the lower terminal surface of bearing area is equipped with a plurality of bearing area end teeth, the bearing area is used for bearing pressure, the holding surface is equipped with a plurality of holding surface end teeth at the up end of above -mentioned holding surface, the holding surface end tooth with the bearing area end tooth is the meshing cooperation, the holding surface is used for providing the shoring of foundation, and the elastic layer, locate the bearing area with between the holding surface for it supports to provide the buffering. The utility model provides an elasticity support structure's simple structure, the form of mutually supporting is nimble, at the structural style of full frequency channel, the adaptation of the variable dissolve -out of full load duan zhongjun.
Description
Technical field
The utility model belongs to the support antivibration area in universal machine structure, relates to a kind of elastic support structure, specifically, refers to a kind of elastic support structure that can be used in rotor supports and surface car tire.
Background technique
Rotating power machinery supporting structure needs certain elasticity and damping characteristic, to ensure that working rotor frequency and natural frequency keep rational nargin, avoids vibration excessive.In traditional design, the way increasing elasticity component and damping link in support can be adopted to reach the object of adjustment rigidity and damping.But can cause complicated in mechanical structure, number of spare parts increases, and global reliability also decreases.
In addition, surface car such as automobile, bicycle, electric motor car etc. use inflatable tire more, to reach the effect of support and vibration damping.But this structure with problems such as leaking gas, blow out, can directly have influence on the sustainability of work.
Model utility content
The purpose of this utility model is to provide a kind of elastic support structure, at least to solve the technical problem that rotating power machinery supporting structure is complicated, reliability is low of prior art, and the technical problem that the supporting structure duration performance solving prior art is further low.
In order to solve the problem, the utility model provides a kind of elastic support structure, and its technological scheme is as follows:
A kind of elastic support structure, comprise pressure-bearing surface, be provided with multiple pressure-bearing surface end tooth in the lower end surface of described pressure-bearing surface, described pressure-bearing surface is used for bearing pressure; Supporting surface, is provided with multiple supporting surface end tooth in the upper-end surface of described supporting surface, and described supporting surface end tooth and described pressure-bearing surface end tooth are engagement fit, and described supporting surface is used for providing base support; And elasitic layer, be located between described pressure-bearing surface and described supporting surface, for providing cushioning supportive.
In above-mentioned elastic support structure, more preferably: the shape of described pressure-bearing surface end tooth and described supporting surface end tooth is any one in trapezoidal, arc, dihedral.
In above-mentioned elastic support structure, more preferably: described elasitic layer is any one in single metal layer, multilayer steel band combination layer, rubber product layer.
In above-mentioned elastic support structure, more preferably: described elasitic layer upper surface is twill face, the angle between the twill line in described twill face and the end tooth line of pressure-bearing surface end tooth is acute angle.
In above-mentioned elastic support structure, more preferably: described elasitic layer lower surface is static cooperation with the fit form of described supporting surface profile of tooth end tooth, vibrating noise is produced for preventing between described elasitic layer and described supporting surface.
In above-mentioned elastic support structure, more preferably: described static fit form is that stepped tooth engages with stepped tooth, arc-shaped gear engages with arc-shaped gear, angular teeth engage with angular teeth in any one.
In above-mentioned elastic support structure, more preferably: between described elasitic layer and described supporting surface profile of tooth trough, fill damping packing; Damping packing is filled between described elasitic layer and described pressure-bearing surface profile of tooth trough.
In above-mentioned elastic support structure, more preferably: the material of described damping packing is any one in metal rubber material, rubber material, viscoelastic material.
In above-mentioned elastic support structure, more preferably: the shape of described damping packing is any one in granular filler, strip packing, square packing.
Analyze known, compared with prior art, advantage of the present utility model and beneficial effect are:
One, the structure of elastic support structure that provides of the utility model is simple, and the flexible form cooperatively interacted, in full frequency band, the variable structural type dissolving adaptation of full load Duan Zhongjun.
Two, the utility model suitable environment and applicable object scope are extensively, especially in rotor supports and vehicle tyre field.
Three, elasitic layer upper surface of the present utility model is designed to twill face, it is acute angle that twill trend moves towards angle with pressure-bearing surface end tooth, damping can be increased in surface of contact fine motion process, twill face and pressure-bearing surface profile of tooth are opened up to there is angle, also be to increase structural damping effect, angle increases, and damping increases.
Four, between elasitic layer of the present utility model and supporting surface profile of tooth trough and elasitic layer and pressure-bearing surface profile of tooth trough fill damping material, make supporting surface, between elasitic layer and pressure-bearing surface, be equivalent to rigidity series connection, both can regulate rigidity, and also can increase structural damping.
Accompanying drawing explanation
Accompanying drawing is the structural representation of the utility model preferred embodiment.
Fig. 1 is the structural representation of the elastic support structure of the utility model preferred embodiment.
Fig. 2 is the structural representation of the elasitic layer of two kinds of the utility model preferred embodiment.
Fig. 3 is the structural representation that the supporting surface of the utility model preferred embodiment coordinates with elasitic layer.
Fig. 4 is the structural representation of the tooth surface shape of the supporting surface (or pressure-bearing surface) of the utility model preferred embodiment.
Fig. 5 is the structural representation of the elasitic layer with twill of the utility model preferred embodiment, the twill of elasitic layer and the twill cross chart of pressure-bearing surface, the structural representation with the supporting surface of twill.
Fig. 6 is that the supporting surface of the utility model preferred embodiment coordinates figure with the profile of tooth of elasitic layer.
Fig. 7 is the elastic support structure use figure (in rotor) of the utility model preferred embodiment.
Fig. 8 is the elastic support structure use figure (in vehicle tyre) of the utility model preferred embodiment.
In figure, 1-pressure-bearing surface; 11-pressure-bearing surface end tooth; 12-pressure-bearing surface trough; 13-pressure-bearing surface crest; 14-pressure-bearing surface profile of tooth angle; 2-supporting surface; 21-supporting surface end tooth; 22-supporting surface crest; 23-supporting surface trough; 24-supporting surface profile of tooth angle; 3-elasitic layer; 31-elasitic layer upper surface; 32-elasitic layer lower surface; 4-bearing; 5-housing member; The closed outer cover of 6-; 7-twill angle.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details.
As shown in Figure 1, the elastic support structure of the utility model preferred embodiment mainly comprises pressure-bearing surface 1, for bearing pressure; Supporting surface 2, for providing base support; Elasitic layer 3, is located between pressure-bearing surface 1 and supporting surface, for providing cushioning supportive.
Specifically, pressure-bearing surface 1 of the present utility model is the structural sections of directly bearing pressure, and pressure is transmitted to supporting surface 2 by elasitic layer 3; Elasitic layer 3, as the construction layer providing elastic reaction, is positioned at the centre of pressure-bearing surface 1 and supporting surface 2; Supporting surface 2 is for bearing the base support face of pressure loading.The elastic support structure that the utility model provides, can directly machine shaping in rigid strutting piece, and determine whether add damping material as required; Structure is simple, obviously can not increase number of spare parts, flexible form, reliable performance.
As shown in Figure 1, multiple pressure-bearing surface end tooth 11 is provided with in the lower end surface of pressure-bearing surface 1; Be provided with multiple supporting surface end tooth 21 in the upper-end surface of supporting surface 2, multiple pressure-bearing surface end teeth 11 of pressure-bearing surface 1 and multiple supporting surface end teeth 21 of supporting surface 2 are in engaging each other arrangement.The path order of pressure transmission is pressure-bearing surface 1, elasitic layer 3 and supporting surface 2, is specially: pressure-bearing surface 1 is contacted with elasitic layer upper surface 31 by pressure-bearing surface end tooth 11, and assembly relation is transition fit; Supporting surface 2 is contacted with elasitic layer lower surface 32 by supporting surface end tooth 21, and assembly relation is transition fit; Pressure-bearing surface end tooth 11 and supporting surface end tooth 21 are interspersed, i.e. pressure-bearing surface profile of tooth crest 13 corresponding supporting surface profile of tooth trough 23, the corresponding supporting surface profile of tooth crest 22 of pressure-bearing surface profile of tooth trough 12; Pressure-bearing surface profile of tooth angle 14 and supporting surface profile of tooth angle 24 influence elastane supporting structure integral rigidity size, angle more large rigidity is less, otherwise then larger.In the utility model, pressure-bearing surface profile of tooth angle 14 is the angles between the face end tooth 11 of pressure-bearing surface 1; In like manner supporting surface profile of tooth angle 24 is the angles between the adjacent support surfaces end tooth 21 of supporting surface 2.
As shown in Figure 4, the shape of pressure-bearing surface end tooth 11 of the present utility model and supporting surface end tooth 21 can be but be not limited to trapezoidal (in Fig. 4 a), arc (b in Fig. 4), dihedral (c in Fig. 4); Can according to the size of load intensity, select different end tooth shapes: trapezoidal cooperation is face contact, contact stress minimum (load passing to elasitic layer 3 is minimum), three surface of contact can provide frictional damping (damping is the strongest), be applicable to full frequency band full load mode (high, low speed, light, heavy rotor); Arc coordinates for linear contact lay (in compressive deformation situation, contact area is projected as oval little contact), contact stress comparatively large (load passing to elasitic layer 3 is moderate), damping (damping is moderate) can be provided in contact area, be applicable to low frequency & middle and high load working condition (low speed, in, large rotor); Dihedral coordinates for linear contact lay (in compressive deformation situation, contact area is projected as oval little contact), contact stress maximum (load passing to elasitic layer 3 is maximum), damping (damping is relatively minimum) can be provided in contact area, be applicable to high frequency & running on the lower load (High Speed Light rotor).Difform pressure-bearing surface end tooth 11 or supporting surface end tooth 21 is adopted according to real needs.
Elasitic layer 3 is according to different use occasions, form can include but not limited to single metal layer, multilayer steel band combination layer (do not do direct degrees of freedom and limit between multilayer steel band by fixedly not meaning of stating here, but combination steel belt layer and need to do axial position between supporting surface or holder housing and limits, to prevent coming off or accident in working procedure.Use and axially locating platform is set in holder housing or the part that matches can reaches the object preventing axial float, come off.Do not have enough spaces that steel band is axially come off in actual use yet.As shown in a in Fig. 2) (multilayer steel band combination layer is formed by stacking successively by multiple single metal layer, do not need to fix, can relative displacement be had between multiple single metal layer, thus strengthen damping, improve effectiveness in vibration suppression), rubber product layer (as shown in the b in Fig. 2); As shown in Figure 7, for rotor supports demand, the rigidity of single metal layer is little, can provide larger elasticity, but damping is relatively not obvious; Multilayer steel band combination layer provide larger flexible while, relative displacement can occur between each single metal layer due to multilayer steel band combination layer, and (displacement described here means relative microcosmic displacement, direction can be circumference or radial), can make damping obviously like this and improve effectiveness in vibration suppression, certainly in the process of assembling, need each single metal layer of multilayer steel band combination layer to superpose successively, the assembling of multilayer steel band combination layer can be made so comparatively loaded down with trivial details.As shown in Figure 8, support demand for vehicle tyre, the quality of rubber product layer (i.e. rubber layer) is little, avoids causing wheel system rotary inertia excessive, thus make resisting moment excessive, simultaneously can by the thickness of change rubber product layer, rate of tension adjustment support stiffness and damping.Changing Pattern is: the thickness of rubber product layer increases, and support stiffness increases, and damping reduces; The thickness of rubber product layer reduces, and support stiffness reduces, and damping improves.Adopt which kind of elasitic layer 3 to be adapted in rotor or vehicle tyre, determine according to the real needs of rotor or vehicle tyre.
As shown in Figure 5, elasitic layer upper surface 31 can be plane or twill face (c in Fig. 5), when elasitic layer upper surface 31 be twill face, the end tooth of pressure-bearing surface end tooth 11 trend for move on the diagonals to time, (the twill angle 7 that end tooth forward a) in Fig. 5 moves towards between (forward that the direction pointed to of the cursor line in a in Fig. 5 is defined as end tooth moves towards) is sharp angle α (b in Fig. 5), 0 ° of ﹤ α ﹤ 90 ° for the twill line in the twill face of elasitic layer upper surface 31 and pressure-bearing surface end tooth 11.When elasitic layer upper surface 31 is twill face, damping can be increased in the surface of contact fine motion process between elasitic layer upper surface 31 and pressure-bearing surface end tooth 11, but relatively can increase processing cost.The end tooth of elasitic layer upper surface 31 (namely when elasitic layer upper surface 31 is twill face) and pressure-bearing surface end tooth 11 moves towards (end tooth of pressure-bearing surface end tooth 11 move towards for move on the diagonals to time) there is angle, also be to increase structural damping effect, when angle increases, the damping between its elasitic layer upper surface 31 and pressure-bearing surface end tooth 11 will increase.Elasitic layer upper surface 31 only can be designed to twill face by the utility model in fact, angle between the twill line in twill face and the end tooth line (namely the end tooth of pressure-bearing surface end tooth 11 moves towards as forward moves towards) of pressure-bearing surface end tooth 11 is acute angle, so also can meet the demand of damping.
As shown in Figure 4, the cross section of supporting surface end tooth 21 and pressure-bearing surface end tooth 11 can be stepped tooth (shown in a in Fig. 4), arc-shaped gear (as shown in the b in Fig. 4), angular teeth (as shown in the c in Fig. 4); Certain elasitic layer lower surface 32 includes but not limited to following fit form with supporting surface end tooth 21: the angular teeth shown in c that the stepped tooth shown in a in Fig. 4 engages with stepped tooth (or being called that stepped tooth coordinates with dovetail groove), the arc-shaped gear shown in b in Fig. 4 engages with arc-shaped gear in (or being called that circle-arc tooth coordinates with arc groove), Fig. 4 engages with angular teeth (or being called that angular teeth coordinates with angle-shaped groove); Simultaneously, tooth (groove) shape and profile of tooth cross-sectional direction angle can be right angle (shown in a in Fig. 6) or non-right angle (shown in the b in Fig. 6), tooth (groove) shape can be straight-tooth (shown in a in Fig. 6), helical teeth (shown in the b in Fig. 6), arc-shaped gear (camber line) (shown in the c in Fig. 6), curvilinerar figure tooth (shown in the d in Fig. 6).(in figure 6, horizontal line is intuitively arranged for stating angle vision.) as elastic support structure, supporting surface 2 should be geo-stationary part, and stable stressed basis is provided, avoid, with elasitic layer 3, pressure-bearing surface 1, transient state global displacement occurs as far as possible, therefore, identical shape tooth (similar shape teeth groove) matches, and can achieve the above object.Meanwhile, profile of tooth exhibition can be straight line (shown in the b in a, Fig. 6 in Fig. 6), camber line (shown in the c in Fig. 6) or other curve (d in Fig. 6 is shown) to (line that anticipate same tooth (groove) shape and profile of tooth cross-sectional direction angle are formed).Profile of tooth exhibition is to during for straight line, and processing is simple, and assembly error requires low, and area of contact is relatively little, but damping is relatively poor, easily produces vibrating noise; Profile of tooth exhibition, to during for camber line, is processed more numerous, and assembly error requires moderate, and area of contact increases, and damping strengthens, and not easily produces vibrating noise; Profile of tooth exhibition is to during for arbitrary curve, and it is the most difficult to process, and assembly error requires the tightest, and area of contact is maximum, and damping is best, the most not easily produces vibrating noise; Determine according to actual real needs.In the utility model, namely so-called profile of tooth cross section expresses tooth profile (as shown in Figure 4); So-called tooth (groove) shape and profile of tooth cross-sectional direction angle refer to that profile of tooth is along angle during facewidth future development and between profile of tooth cross section.
As shown in Figure 1, damping packing is filled in gap between elasitic layer 3 and supporting surface profile of tooth trough 23 and the gap between elasitic layer 3 and pressure-bearing surface profile of tooth trough 12, and the material can filling damping packing according to service condition difference includes but not limited to metal rubber material, rubber material, viscoelastic material; The packing of different materials is filled in gap between elasitic layer 3 and supporting surface profile of tooth trough 23 and the gap between elasitic layer 3 and pressure-bearing surface profile of tooth trough 12, is equivalent to rigidity series connection, both can regulates rigidity, and also can increase structural damping.In steel design (such as bearing), fill metal-rubber, rubber or viscoelastic material, can rigidity be reduced, increase damping; In rubber structure (such as tire), when filling metal-rubber, rubber material, can rigidity be increased, increase damping; When filling viscoelastic material, can increase or reduce rigidity, increasing damping.The difference that viscoelastic material Yi Qiji of the present utility model is low is divided into four classes: pitch, the hydrotrope, latex and epoxy resin, adopts different viscoelastic materials according to different situations.The shape can filling damping packing according to service condition difference includes but not limited to granular filler, strip packing, square packing;
During filler particles shape packing, increase damping, simultaneously:
Can rigidity be improved, when granular filler rigidity is higher than existing structure link (such as bearing or tire) rigidity, the global stiffness of existing structure link can be improved;
Can rigidity be reduced, when granular filler rigidity is lower than existing structure link (such as bearing or tire) rigidity, the global stiffness of existing mechanism link can be reduced; Stiffness at the end formula: 1/k=1/k1+1/k2+1/k3+ ... + 1/kn; (K refers to the rigidity that whole elastic support structure is overall, K1, K2 ... Kn these refer to the rigidity of each substructure, substructure comprises: pressure-bearing surface, supporting surface, elasitic layer, packing etc.)
When packing shape packing, square packing, in steel design (such as bearing), can reduce rigidity, increase damping, now strip packing can be any one in metal rubber material, rubber material, viscoelastic material; In rubber structure (such as tire), fill metal rubber material, rubber material strip packing time, can rigidity be improved, increase damping; When filling the strip packing of viscoelastic material, rigidity (when viscoelastic material packing rigidity is higher than rubber structure rigidity) can be improved or reduce rigidity (when viscoelastic material packing rigidity is lower than rubber structure rigidity), increasing damping.
In the utility model, the material of granular filler only can adopt rubber material and viscoelastic material to be made, the rubbing surface of granular filler is more, directivity is not had to limit, damping vibration attenuation better effects if, but more chip can be produced after needs encapsulation, wearing and tearing, and when hardness requirement is higher, may noise be produced.
In the utility model, so-called metal rubber material refers to a kind of functional structure damping material of porous, and metal-rubber is through selecting the processes such as silk, wrapping wire, stretching, braiding and compression molding to be made by wire.Because it macroscopically has macromolecular structure and the elasticity of rubber like, be again full-metallic goods, be therefore called " metal-rubber ".Metal-rubber relies on the dry friction dissipate vibrational energy between wire, reaches the effect of vibration damping; The feature such as there is high elasticity, high damping, lightweight, environmental suitability is strong, and be easy to the shape making various complexity.So-called rubber material refers to traditional rubber of the prior art.
Embodiment one:
The present embodiment provides a kind of elastic support structure be used in rotor support system, described elastic support structure is as the support system of bearing 4, the assembly relation of elastic support structure and housing member 5 is as Fig. 7, the pressure-bearing surface 1 of elastic support structure is positioned at the outside of bearing 4, and the supporting surface 2 of elastic support structure is positioned at the inside of housing member 5; Pressure-bearing surface 1 is contacted with elasitic layer upper surface 31 by pressure-bearing surface end tooth 11, and assembly relation is transition fit; Described supporting surface 2 is contacted with elasitic layer lower surface 32 by supporting surface end tooth 21, and assembly relation is transition fit.
Embodiment two:
For vehicle tyre field, as Fig. 8, on the basis of the elastic support structure provided in embodiment one, should enclose outside and put closed outer cover 6, to prevent foreign material to be filled into elastic support structure space, thus lose the function of elastic support, vibration damping.The material of described pressure-bearing surface 1, supporting surface 2, elasitic layer 3 all selects rubber, and all the other technical characteristicss and rule are as described in embodiment one.The principle of the elastic support structure utilizing the utility model to provide, uses the rubber material that conventional tyre is used, can realize non-inflatable tyre structure.Both ensure rideability, turn avoid the drawback of air-supported structure.
Analyze known, compared with prior art, advantage of the present utility model and beneficial effect are:
One, the structure of elastic support structure that provides of the utility model is simple, and the flexible form cooperatively interacted, in full frequency band, the variable structural type dissolving adaptation of full load Duan Zhongjun.
Two, the utility model suitable environment and applicable object scope are extensively, especially in rotor supports and vehicle tyre field.
Three, elasitic layer upper surface of the present utility model is designed to twill face, it is acute angle that twill trend moves towards angle with pressure-bearing surface end tooth, damping can be increased in surface of contact fine motion process, twill face and pressure-bearing surface profile of tooth are opened up to there is angle, also be to increase structural damping effect, angle increases, and damping increases.
Four, between elasitic layer of the present utility model and supporting surface profile of tooth trough and elasitic layer and pressure-bearing surface profile of tooth trough fill damping material, make supporting surface, between elasitic layer and pressure-bearing surface, be equivalent to rigidity series connection, both can regulate rigidity, and also can increase structural damping.
As known by the technical knowledge, the utility model can be realized by other the embodiment not departing from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, is not only.Allly all to be included in the utility model within the scope of the utility model or being equal to the change in scope of the present utility model.
Claims (9)
1. an elastic support structure, is characterized in that, comprising:
Pressure-bearing surface, be provided with multiple pressure-bearing surface end tooth in the lower end surface of described pressure-bearing surface, described pressure-bearing surface is used for bearing pressure;
Supporting surface, is provided with multiple supporting surface end tooth in the upper-end surface of described supporting surface, and described supporting surface end tooth and described pressure-bearing surface end tooth are engagement fit, and described supporting surface is used for providing base support; With
Elasitic layer, is located between described pressure-bearing surface and described supporting surface, for providing cushioning supportive.
2. elastic support structure according to claim 1, is characterized in that:
The shape of described pressure-bearing surface end tooth and described supporting surface end tooth is any one in trapezoidal, arc, dihedral.
3. elastic support structure according to claim 1, is characterized in that:
Described elasitic layer is any one in single metal layer, multilayer steel band combination layer, rubber product layer.
4. elastic support structure according to claim 1, is characterized in that:
Described elasitic layer upper surface is twill face, and the angle between the twill line in described twill face and the end tooth line of pressure-bearing surface end tooth is acute angle.
5. elastic support structure according to claim 1, is characterized in that:
Described elasitic layer lower surface is static cooperation with the fit form of described supporting surface profile of tooth end tooth, produces vibrating noise for preventing between described elasitic layer and described supporting surface.
6. elastic support structure according to claim 5, is characterized in that:
Described static fit form is that stepped tooth engages with stepped tooth, arc-shaped gear engages with arc-shaped gear, angular teeth engage with angular teeth in any one.
7. elastic support structure according to claim 1, is characterized in that:
Damping packing is filled between described elasitic layer and described supporting surface profile of tooth trough;
Damping packing is filled between described elasitic layer and described pressure-bearing surface profile of tooth trough.
8. elastic support structure according to claim 7, is characterized in that:
The material of described damping packing is any one in metal rubber material, rubber material, viscoelastic material.
9. elastic support structure according to claim 7, is characterized in that:
The shape of described damping packing is any one in granular filler, strip packing, square packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520494669.0U CN204985470U (en) | 2015-07-09 | 2015-07-09 | Elasticity support structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520494669.0U CN204985470U (en) | 2015-07-09 | 2015-07-09 | Elasticity support structure |
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| CN204985470U true CN204985470U (en) | 2016-01-20 |
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| CN201520494669.0U Expired - Fee Related CN204985470U (en) | 2015-07-09 | 2015-07-09 | Elasticity support structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989761A (en) * | 2015-07-09 | 2015-10-21 | 中国能建集团装备有限公司北京技术中心 | Elastic support structure |
| CN111757987A (en) * | 2018-03-06 | 2020-10-09 | 莱宝有限公司 | Vacuum pump |
-
2015
- 2015-07-09 CN CN201520494669.0U patent/CN204985470U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989761A (en) * | 2015-07-09 | 2015-10-21 | 中国能建集团装备有限公司北京技术中心 | Elastic support structure |
| CN111757987A (en) * | 2018-03-06 | 2020-10-09 | 莱宝有限公司 | Vacuum pump |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160914 Address after: 100044 Beijing Haidian District Xizhimen North Shimonoseki Land Temple 32 Patentee after: Beijing Electric Power Automatic Equipment Co., Ltd. Address before: 100044 Beijing city Haidian District four crossing the road Land Temple 32 building three layer 11 Patentee before: Beijing Technical Center of China Energy Engineering Group Equipment Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20180709 |