CN206292101U - A kind of omnipotent bias loading support meanss - Google Patents

A kind of omnipotent bias loading support meanss Download PDF

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Publication number
CN206292101U
CN206292101U CN201621410749.4U CN201621410749U CN206292101U CN 206292101 U CN206292101 U CN 206292101U CN 201621410749 U CN201621410749 U CN 201621410749U CN 206292101 U CN206292101 U CN 206292101U
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support
screw rod
cross beam
fixed cross
hinged
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曲秀姝
刘琦
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Beijing University of Civil Engineering and Architecture
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Beijing University of Civil Engineering and Architecture
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Abstract

The utility model provides a kind of omnipotent bias loading support meanss, the support meanss include being arranged on the support frame of forcing press surrounding, the upper and lower ends of component are respectively equipped with upper hinge support and lower hinge support, and support frame is provided with the fixed cross beam being slidably connected with upper hinge support and lower hinge support respectively.The utility model is protected using support frame to component; the adjustment of eccentric throw is carried out using moveable upper and lower hinged-support; the safety of personnel and property during bias test can be ensured; eccentric hinged-support is fixed before the test; when ensureing lifting test component; hinged-support does not topple; and the constraint of fixed cross beam and hinged-support is released after preloading; and it is adjusted into downwards appropriate position; protecting component is added again; support frame structure is set still to be played a protective role in component surrounding, while preventing hinged-support from falling.The utility model structure is multi-part assembled, and on-site consolidation is simple, while guarantee test is safe, mitigates the deadweight of all parts.

Description

A kind of omnipotent bias loading support meanss
Technical field
The utility model is related to bias-load experimental technique field, more particularly, to the omnipotent bias loading support of one kind Device.
Background technology
At present, with the growth requirement of building trade, the requirement more and more higher of security and reliability to building structure, Generally need to test structure and material, the foundation of reality is provided for its structure design.It is various to receive in Practical Project Pressure component is mostly eccentric compression member due to many stressing influences.The test data of wherein bias test is more normal See and one of strong data, the research and design for component have extremely important influence.Before the test and in loading Safety problem also seems and becomes more and more important.
The bias bearing capacity of component is one of important parameter to component, before the test and during loading, because component is eccentric Place, may there is the danger that test component and loading bearing topple, so as to jeopardize the safety of testing crew and experiment property. Therefore need to be designed experimental rig, to ensure the security of bias test process, while to personnel in experiment and property Protected.Existing knife hinge and ball pivot loading bearing are applied to there is larger safety in the bias test of the larger component of slenderness ratio Property hidden danger, it is impossible to meet bias load test requirement.
Utility model content
The utility model is provided and a kind of overcomes above mentioned problem or the omnipotent bias that solves the above problems at least in part to add Support meanss are carried, the support meanss component can not topple during guarantee test, improve the security of personnel and property in experiment.
According to one side of the present utility model, there is provided a kind of omnipotent bias loading support meanss, the support meanss include The support frame of forcing press surrounding is arranged on, the upper and lower ends of component are respectively equipped with upper hinge support and lower hinge support, support frame as described above It is provided with the fixed cross beam being slidably connected with the upper hinge support and lower hinge support respectively.The support meanss also include being used for pre-add The protecting component of upper and lower hinged-support and fixed cross beam is connected after load.
Further, the base of the upper hinge support and lower hinge support include upper steel plate and lower steel plate, the upper steel plate and The two ends of lower steel plate are respectively and fixedly provided with overhanging hinged-support sliding part, are equipped with the fixed cross beam and the hinged-support sliding part The groove of cooperation, the upper hinge support and the lower hinge support pass through the hinged-support sliding part and the fixed cross beam respectively Groove is slidably connected.
Test component to unidirectional bias can use ball hinged support using knife hinged-support, the test component to Biaxial bending Or cross hinged-support.The size and quantity of the hinged-support sliding part can be checked by the weight of component.
Further, the hinged-support sliding part includes screw rod and the nut on the screw rod, one end of the screw rod It is respectively welded on the upper steel plate and lower steel plate, the other end of the screw rod passes outwards through the groove of the fixed cross beam, institute Nut is stated to be located on the screw rod in the outside of the groove.The nut can be tight with the fixed cross beam by the hinged-support sliding part It is solidly connected.The diameter and quantity of screw rod are checked by the weight of component.The size of the groove can be according to the chi of the screw rod Very little determination.
Further, the upper and lower ends of support frame as described above are respectively equipped with four fixed cross beams, and four of upper end are described solid Determine upper steel plate and the two ends of lower steel plate of the crossbeam respectively positioned at the upper hinge support, four fixed cross beam difference positions of lower end Upper steel plate and the two ends of lower steel plate in the lower hinge support.First by the upper hinge support, component and lower hinge support point during connection Commitment positions are not put into, then clamp upper and lower hinged-support respectively with the fixed cross beam, and by the hinged-support sliding part Be fastenedly connected for hinged-support and fixed cross beam by nut, after forcing press is preloaded to test component, unscrews nut, releases solid Determine constraint of the crossbeam to upper hinge support and lower hinge support, fixed cross beam is slided into protective position, and it is follow-up to add protecting component It is continuous to carry out load test.
Further, support frame as described above includes four columns and the assembling crossbeam for connecting adjacent upright posts, and the assembling is horizontal Beam includes first crossbeam and second cross beam, and the two ends of the fixed cross beam are slidably connected with the first crossbeam.
The assembling crossbeam includes eight first crossbeams and four second cross beams, up and down the two of support frame as described above End is slidably connected by four first crossbeams and the two ends of the fixed cross beam respectively, the first crossbeam and the fixation Beam vertical is set, and the second cross beam be arranged in parallel with the fixed cross beam.
Further, the first crossbeam is provided with the first chute, and the fixed cross beam is respectively arranged at two ends with and described The first sliding part that one chute coordinates, the first crossbeam passes through first chute and the first sliding part with the fixed cross beam It is slidably connected.
Further, first sliding part includes the first screw rod, the first nut and the first sliding block, the one of first screw rod End is fixed on the fixed cross beam, and first sliding block is fixed on the other end of first screw rod, and first sliding block exists Slided in first chute, first nut is located on first screw rod in the outside of first chute.By twisting , with first chute can be fastenedly connected first sliding part by tight first nut, unclamp first nut, can make First sliding part is slided in first chute.The size of first chute can be according to the chi of first sliding part Very little determination.
Further, the column is provided with the second chute, and being respectively arranged at two ends with for the assembling crossbeam is slided with described second The second sliding part that groove coordinates, the assembling crossbeam is slided with the column by second chute and second sliding part Connection.
Further, second sliding part includes the second screw rod, the second nut and the second sliding block, the one of second screw rod End is fixed on the assembling crossbeam, and second sliding block is fixed on the other end of second screw rod, and second sliding block exists Slided in second chute, second nut is located on second screw rod in the outside of second chute.By twisting , with second chute can be fastenedly connected second sliding part by tight second nut, unclamp second nut, can make Second sliding part is slided in second chute.The size of second chute can be according to the chi of second sliding part Very little determination.
Further, the column uses hollow steel pipe, second chute to be welded on the side wall of the column;It is described vertical Post can also use H profile steel, and second chute is fixed on the column by screw rod.
Further, the support meanss include that protecting component, the protecting component respectively will be described after being used to preload Hinged-support and lower hinge support are connected to the fixed cross beam.
The protecting component includes protection screw rod, protective nut and protection connecting rod, described protection connecting rod one end and institute The sliding part for stating upper hinge support or the lower hinge support is connected, and is placed in the respective threaded rod of respective slide and is screwed in outside Corresponding nut, the other end of the protection connecting rod is by the fixed cross beam after the protection screw rod and protective nut and adjustment It is connected.The protection screw rod is passed through into the groove of the fixed cross beam, and is fixed with the protective nut in outside, the protection The opposite side of screw rod connects the protection connecting rod, and inner side of screwing on fender bolt, it is ensured that the protection connecting rod is in protection Fixed in screw rod and not by protective nut, to provide protection connecting rod rotational freedom.
The all parts independence of the support meanss, is connected, to mitigate dead load, respectively by chute and screw rod each other Individual part can be used hollow steel pipe to be supported.The screw rod and weld strength of each part are by the experiment structure that specifically carries in support frame Part weight and eccentric throw are calculated and determined.
Based on above-mentioned technical proposal, the utility model proposes a kind of omnipotent bias loading support meanss, using support frame Component is protected, the adjustment of eccentric throw is carried out using slidable upper and lower hinged-support, can ensured partially by the support meanss The safety of personnel and property, is fixed to eccentric hinged-support before the test during pressure experiment, it is ensured that do not incline after lifting test component Cover, and constraint of the fixed cross beam to hinged-support is released after preloading, and fixed cross beam is adjusted to appropriate location, addition protection Part plays a protective role in component surrounding jointly with remaining support frame structure, while preventing hinged-support from falling.This support is filled It is multi-part assembled to put structure design, makes each part can be with independently installed, and on-site consolidation is simple, and can effectively fix Test component, while guarantee test is safe, mitigates the deadweight of all parts, for the assembly of support frame provides facility.
Brief description of the drawings
Fig. 1 is the structural representation of the support meanss according to the utility model embodiment;
Fig. 2 is the schematic diagram of upper hinge support according to the utility model embodiment or lower hinge support;
Fig. 3 is the connection diagram of the first crossbeam according to the utility model embodiment and fixed cross beam;
Fig. 4 is the schematic diagram of the first crossbeam according to the utility model embodiment;
Fig. 5 is the schematic diagram of the second cross beam according to the utility model embodiment;
Fig. 6 is the schematic diagram of the fixed cross beam according to the utility model embodiment;
Fig. 7 is the schematic diagram of the second sliding part according to the utility model embodiment;
Fig. 8 is the schematic diagram of the column according to the utility model embodiment;
Fig. 9 is the schematic diagram of the second chute according to the utility model embodiment;
Figure 10 is that the schematic diagram after protecting component is added according to the support meanss of the utility model embodiment;
Figure 11 is the schematic diagram being connected with fixed cross beam and hinged-support according to the protecting component of the utility model embodiment;
Figure 12 is the schematic diagram of the protecting component according to the utility model embodiment.
Marked in figure:1. test platform, 2. component, 31. upper hinge supports, 32. lower hinge supports, 33. hinged-support sliding parts, 4. Column, 5. second cross beam, 6. first crossbeam, 61. first chutes, 7. fixed cross beam, 71. grooves, 8. the second sliding part, 81. Two sliding blocks, 82. second screw rods, 83. second nuts, 9. the first sliding part, 10. the second chute, 11. protecting components, 111. protection Screw rod, 112. protective nuts, 113. protection connecting rods.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below Embodiment is used to illustrate the utility model, but is not limited to scope of the present utility model.
In the one embodiment according to the application, with reference to Fig. 1, there is provided a kind of omnipotent bias loading support meanss, the branch Support arrangement includes being arranged on the support frame of forcing press surrounding, the upper and lower ends of component 2 be respectively equipped with upper hinge support 31 and under it is hinged Seat 32, support frame as described above is provided with the fixed cross beam 7 being slidably connected with the upper hinge support 31 and lower hinge support 32 respectively.
With reference to Fig. 2, the base of the upper hinge support 31 and lower hinge support 32 includes upper steel plate and lower steel plate, the upper steel The two ends of plate and lower steel plate are respectively and fixedly provided with overhanging hinged-support sliding part 33, are equipped with the fixed cross beam 7 hinged with described The groove 71 that seat sliding part 33 coordinates, with reference to Fig. 6, the upper hinge support 31 and the lower hinge support 32 are respectively by described hinged Seat sliding part 33 is slidably connected with the groove 71 of the fixed cross beam 7.
With reference to Figure 10 and Figure 11, after the support meanss include that protecting component 11, the protecting component 11 are used to preload The upper hinge support 31 and lower hinge support 32 are connected to the fixed cross beam 7 respectively.
With reference to Figure 12, the protecting component 11 includes protection screw rod 111, protective nut 112 and protection connecting rod 113, institute State protection one end of connecting rod 113 to be connected with the hinged-support sliding part 33 of the upper hinge support 31 or the lower hinge support 32, place Screwed on corresponding nut, the other end of the protection connecting rod 113 in the respective threaded rod of hinged-support sliding part 33 and in outside It is connected with the fixed cross beam 7 after adjustment by the protection screw rod 111 and protective nut 112.The protection screw rod 111 is passed through The groove 71 of the fixed cross beam 7, and fixed with the protective nut 112 in outside, the opposite side of the protection screw rod 111 connects Connect it is described protection connecting rod 113, and screw on inner side fender bolt 112, it is ensured that it is described protection connecting rod 113 in the protection spiral shell Fixed in bar 111 and not by the protective nut 112, to provide the rotational freedom of the protection connecting rod 113.
Test component 2 to unidirectional bias can use ball pivot branch using knife hinged-support, the test component 2 to Biaxial bending Seat or cross hinged-support.The size and quantity of the hinged-support sliding part 33 can be checked by the weight of component 2.
The hinged-support sliding part 33 includes screw rod and the nut on the screw rod, and one end of the screw rod is welded respectively It is connected on the upper steel plate and lower steel plate, the other end of the screw rod passes outwards through the groove 71 of the fixed cross beam 7, the spiral shell Mother is on the screw rod in the outside of the groove 71.The nut can be by the hinged-support sliding part 33 and the fixed cross beam 7 It is fastenedly connected.The diameter and quantity of screw rod are checked by the weight of component 2.The size of the groove 71 can be according to the screw rod Size determine.
Upper hinge support 31, lower hinge support 32 using class 4 .6 or 4.8 screw rod, can using automatic welding, semiautomatic welding or With E43 type welding rods, by screw rod manual welding on Q235 steel plates, steel plate thickness meets:d≥4d0, wherein d0It is screw diameter.It is single Individual screw rod weld strength meets:The shearing strength of single screw rod meets:
The length of groove 71 of the fixed cross beam 7 should meet eccentric throw adjustment of the hinged-support to test component 2, on groove 71 The thickness on lower both sides should meet:t≥1.5d0, material can be using common building steel such as Q235, Q345 etc.;It is welded on fixed horizontal stroke The screw rod at the two ends of beam 7, single screw rod weld strength meets:The shearing strength of single screw rod meets:
Groove width determines that the thickness on the upper and lower both sides of groove should meet according to the diameter of bolt in the protection connecting rod 113: t≥1.5d0, material can be using common building steel such as Q235, Q345 etc., the shearing strength satisfaction of single screw rod:
The upper and lower ends of support frame as described above are respectively equipped with four fixed cross beams 7, four fixed cross beams 7 of upper end The upper steel plate of the upper hinge support 31 and the two ends of lower steel plate are located at respectively, and four fixed cross beams 7 of lower end are located at respectively The upper steel plate of the lower hinge support 32 and the two ends of lower steel plate.First by the upper hinge support 31, component 2 and lower hinge support during connection 32 are put into commitment positions respectively, then clamp upper hinge support 31, lower hinge support 32 respectively with the fixed cross beam 7, and by described Be fastenedly connected for hinged-support and fixed cross beam 7 by the nut on hinged-support sliding part, when forcing press is preloaded to test component 2 Afterwards, unscrew nut, decontrol the connection of fixed cross beam 7 and hinged-support, load test is proceeded after removing fixed cross beam 7.
Support frame as described above includes four columns 4 and the assembling crossbeam for connecting adjacent upright posts 4, and the assembling crossbeam includes First crossbeam 6 and second cross beam 5, the two ends of the fixed cross beam 7 are slidably connected with the first crossbeam 6.
The assembling crossbeam includes eight first crossbeams 6 and four second cross beams 5, with reference to Fig. 4 and Fig. 5, institute The upper and lower ends for stating support frame are slidably connected by four first crossbeams 6 and the two ends of the fixed cross beam 7 respectively, reference Fig. 3, the first crossbeam 6 is vertically arranged with the fixed cross beam 7, and the second cross beam 5 is parallel with the fixed cross beam 7 to be set Put.
The first crossbeam 6 is provided with the first chute 61, and being respectively arranged at two ends with for the fixed cross beam 7 is slided with described first The first sliding part 9 that groove 61 coordinates, the first crossbeam 6 is slided with the fixed cross beam 7 by first chute 61 and first Moving part 9 is slidably connected.
The material of the first crossbeam 6 can be using common building steel such as Q235, Q345 etc., and the thickness of the first chute 61 should expire Foot:And meet the first sliding part 9 of fixed cross beam 7 can be fixed in chute slidably;It is welded on The screw rod at the two ends of first crossbeam 6, single screw rod weld strength meets:The shearing strength of single screw rod Meet:
First sliding part 9 includes the first screw rod, the first nut and the first sliding block, and one end of first screw rod is fixed On the fixed cross beam 7, first sliding block is fixed on the other end of first screw rod, and first sliding block is described Slided in one chute 61, first nut is located on first screw rod in the outside of first chute 61.By tightening , with first chute 61 can be fastenedly connected first sliding part 9 by first nut, unclamp first nut, can First sliding part 9 is set to be slided in first chute 61.The size of first chute 61 can be slided according to described first The size of moving part 9 determines.
With reference to Fig. 8 and Fig. 9, the column 4 is provided with the second chute 10, described to assemble being respectively arranged at two ends with and institute for crossbeam The second sliding part 8 of the cooperation of the second chute 10 is stated, with reference to Fig. 7, the assembling crossbeam passes through second chute with the column 4 10 and second sliding part 8 be slidably connected.
Second sliding part 8 includes the second screw rod 82, the second nut 83 and the second sliding block 81, second screw rod 82 One end is fixed on the assembling crossbeam, and second sliding block 81 is fixed on the other end of second screw rod 82, described second Sliding block 81 is slided in second chute 10, and second nut 83 is located at described the second of the outside of second chute 10 On screw rod 82.By tightening second nut 83, second sliding part 8 can be fastenedly connected with second chute 10, Second nut 83 is unclamped, second sliding part 8 can be made to be slided in second chute 10.Second chute 10 Size can determine according to the size of second sliding part 8.Wherein, the first sliding part 9 is identical with the structure of the first sliding part 9, First chute 61 is identical with the structure of second chute 10.
The column 4 uses hollow steel pipe, second chute 10 to be welded on the side wall of the column 4;The column 4 Also H profile steel can be used, second chute 10 is fixed on the column 4 by screw rod.Hollow column 4 with chute, material Can using common building steel such as Q235, Q345 etc., the second chute 10 meet assemble crossbeam sliding block can in chute slidably, To ensure the steadiness of column 4, chassis can be welded with bottom.
Above-mentioned omnipotent bias loading support meanss when in use, need to be beforehand through the weight of bias test component and eccentric throw Determine the size of each connection member, specially:
It is first according to bias test construction weight and eccentric throw determines screw diameter and number of the processing on upper and lower hinged-support Amount, determines that screw rod and weld strength meet biasing member requirement by calculating;Determine that upper and lower hinged-support exists according to component eccentric throw Sliding length in the groove of fixed cross beam, to determine the minimum length of the groove, and determines described logical according to screw diameter The width of groove;The first screw rod, the second screw rod and the weld strength of fixed cross beam and assembling crossbeam are determined by calculating, it is determined that correspondence Screw diameter and sliding block and chute size.
The application method is:Four root posts are first placed on the commitment positions of test platform 1 vertically, and are connected by assembling crossbeam Connect, tentatively fixed;Lower hinge support is subsequently placed with, forcing press center is placed it in, and it is solid according to its position adjustment Determine crossbeam and assemble horizontal depth of beam, be fixed with nut;According to required eccentric distance lifting components to the lower hinge support On, it is determined that upper hinge support to be placed on the upper end of the component again after firm, and placement is aligned with lower hinge support, according to upper hinged Fixed cross beam described in the position adjustment of seat and assembling and are fixed crossbeam position with nut;After fixing, component is entered with forcing press Row is preloaded, and then unclamps the nut of the fixation upper and lower hinged-support, releases fixed cross beam to upper hinge support and lower hinge support Constraint, fixed cross beam is slided into protective position, and add protecting component, can then proceed by load test.Remaining Support frame structure can continue to play a part of protection to component.
The all parts independence of the support meanss, is connected, to mitigate dead load, respectively by chute and screw rod each other Individual part can be used hollow steel pipe to be supported.The screw rod and weld strength of each part are by the experiment structure that specifically carries in support frame Part weight and eccentric throw are calculated and determined.
Finally, the present processes are only preferably embodiment, are not intended to limit protection domain of the present utility model. It is all it is of the present utility model spirit and principle within, any modification, equivalent substitution and improvements made etc. should be included in this reality Within new protection domain.

Claims (10)

1. a kind of omnipotent bias loads support meanss, it is characterised in that the support frame including being arranged on forcing press surrounding, component Upper and lower ends are respectively equipped with upper hinge support and lower hinge support, support frame as described above be provided with respectively with the upper hinge support and lower hinge support The fixed cross beam being slidably connected.
2. the omnipotent bias of one kind according to claim 1 loads support meanss, it is characterised in that the upper hinge support is with The base of hinged-support includes upper steel plate and lower steel plate, and the two ends of the upper steel plate and lower steel plate are respectively and fixedly provided with overhanging hinged-support Sliding part, be equipped with the fixed cross beam with the hinged-support sliding part coordinate groove, the upper hinge support and it is described under Hinged-support is slidably connected by the hinged-support sliding part and the groove of the fixed cross beam respectively.
3. the omnipotent bias of one kind according to claim 2 loads support meanss, it is characterised in that the hinged-support sliding part Nut including screw rod and on the screw rod, one end of the screw rod is respectively welded on the upper steel plate and lower steel plate, The other end of the screw rod passes outwards through the groove of the fixed cross beam, and the nut is located at the screw rod in the outside of the groove On.
4. one kind according to claim 2 it is omnipotent bias loading support meanss, it is characterised in that support frame as described above it is upper and lower Four fixed cross beams are respectively arranged at two ends with, four fixed cross beams of upper end are respectively positioned at the upper steel of the upper hinge support The two ends of plate and lower steel plate, four fixed cross beams of lower end are respectively positioned at the upper steel plate and lower steel plate of the lower hinge support Two ends.
5. the omnipotent bias of one kind according to claim 1 loads support meanss, it is characterised in that support frame as described above includes four Individual column and the assembling crossbeam for connecting adjacent upright posts, the assembling crossbeam include first crossbeam and second cross beam, described solid The two ends and the first crossbeam for determining crossbeam are slidably connected.
6. the omnipotent bias of one kind according to claim 5 loads support meanss, it is characterised in that set on the first crossbeam There are the first chute, first sliding part being respectively arranged at two ends with first chute cooperation of the fixed cross beam, described first Crossbeam is slidably connected with the fixed cross beam by first chute and the first sliding part.
7. the omnipotent bias of one kind according to claim 6 loads support meanss, it is characterised in that the first sliding part bag The first screw rod, the first nut and the first sliding block are included, one end of first screw rod is fixed on the fixed cross beam, described first Sliding block is fixed on the other end of first screw rod, and first sliding block is slided in first chute, first nut On first screw rod in the outside of first chute.
8. omnipotent bias loading support meanss of one kind according to claim 5, it is characterised in that the column is provided with the Two chutes, second sliding part being respectively arranged at two ends with second chute cooperation of the assembling crossbeam, the assembling crossbeam It is slidably connected by second chute and second sliding part with the column.
9. the omnipotent bias of one kind according to claim 8 loads support meanss, it is characterised in that the second sliding part bag The second screw rod, the second nut and the second sliding block are included, one end of second screw rod is fixed on the assembling crossbeam, described second Sliding block is fixed on the other end of second screw rod, and second sliding block is slided in second chute, second nut On second screw rod in the outside of second chute.
10. according to any described a kind of omnipotent bias loading support meanss of claim 1 to 9, it is characterised in that the support Device includes protecting component, and the protecting component is used to that the upper hinge support and lower hinge support to be connected into institute respectively after preloading State fixed cross beam;The protecting component include protection screw rod, protective nut and protection connecting rod, described protection connecting rod one end with The upper hinge support or the lower hinge support are connected, and the other end of the protection connecting rod is by the protection screw rod and protection spiral shell It is female to be connected with the fixed cross beam.
CN201621410749.4U 2016-12-21 2016-12-21 A kind of omnipotent bias loading support meanss Active CN206292101U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106840845A (en) * 2016-12-21 2017-06-13 北京建筑大学 A kind of omnipotent bias loading support meanss and its application method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106840845A (en) * 2016-12-21 2017-06-13 北京建筑大学 A kind of omnipotent bias loading support meanss and its application method
CN106840845B (en) * 2016-12-21 2023-06-02 北京建筑大学 Universal bias loading supporting device and application method thereof

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