CN109655217A - A kind of beam test beam end support - Google Patents
A kind of beam test beam end support Download PDFInfo
- Publication number
- CN109655217A CN109655217A CN201910111164.4A CN201910111164A CN109655217A CN 109655217 A CN109655217 A CN 109655217A CN 201910111164 A CN201910111164 A CN 201910111164A CN 109655217 A CN109655217 A CN 109655217A
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- CN
- China
- Prior art keywords
- side plate
- top board
- plate
- roller bearing
- bottom plate
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0025—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of elongated objects, e.g. pipes, masts, towers or railways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of beam test beam end support, including bottom plate, left and right side plates and top board, the space for beam-ends insertion is surrounded；Upper roll shaft and lower roller shaft are embedded in the upper roll shaft groove of top board lower end and in the lower roller shaft groove of bottom plate upper end respectively, two roll shafts are pressed into contact with beam-ends upper and lower surfaces respectively, limit beam-ends along the vertical direction；It is equipped with two groups of opposite vertical long holes on both side plate, through there is beam-ends gag lever post in one group of vertical long hole, the roller set with face contact on the outside of beam-ends is installed on beam-ends gag lever post, limits beam-ends along beam length direction；It is respectively coated with left limit bar and right limit bar in another group of vertical long hole, is respectively fixed with left side plate and right end plate in two gag lever post inner ends, two end plates are pressed into contact with beam-ends left and right side respectively, limit beam-ends in left-right direction.This beam end support can provide good effect of contraction for beam-ends left and right directions, up and down direction and beam length direction, reduce test error, it is ensured that test is smoothly implemented.
Description
Technical field
The present invention relates to Architectural Structure Experimentation technical fields, are related to beam test technology, and in particular to a kind of beam test beam
Hold support.
Background technique
Beam plays an important role in modern architecture, in occupation of very important ground in whole engineering structure
Position.In real life, beam-type member is usually predominantly receiving static load, but there are also many in actual architectural engineering
Structure can also bear duplicate cyclic load in addition to bearing static load effect as crane girder, bridge etc..With these
The generally use of beam, so that its fatigue problem becomes the problem of can not ignore.So can accurately be obtained in beam test
Test data is obtained, reducing the error generated by testing equipment is just particularly important.
Used by China carries out monotonic static test and the fatigue test of beam in most of structure laboratories at present
Support is relatively simple, can not make corresponding adjustment according to the size of test specimen, have with less lateral Displacement function, or only
Unilateral limit function, and the importance of both ends limit is had ignored, it is especially easily tired during low cycling loads or fatigue load
Meter generates biggish lateral displacement or leads to test failure to influence test result along the displacement of beam axis, has more one
Fixed risk.So on the basis of adequately understanding and clearly recognizing makes test generate large error reason, how
Reduce or avoid the lateral displacement or total displacement of the lines that generate in cyclic load load by beam, can people be correctly sentenced
Disconnected beam performance and test is safe and smooth is of great significance and is influenced.
It retrieves, does not retrieve and technical solution similar in this patent through the prior art.
Summary of the invention
It is an object of the present invention in place of overcome the deficiencies in the prior art, providing one kind can be beam during the test
End left and right directions, up and down direction and the length direction along beam can provide good position-limiting action, while can limit at beam support
Displacement on horizontal or vertical direction, the turning power without influencing beam-type member end, to reduce the beam of test error
Beam end support is used in test.
Above-mentioned purpose of the invention is realized by following technical solution:
A kind of beam test beam end support, it is characterised in that: including bottom plate, the parallel left and right side plates being fixed on bottom plate
And it is set to the top board above both side plate, the space for beam-ends insertion, top board are surrounded between bottom plate, both side plate and top board
It is fixedly connected in a manner of adjustable up and down with the upper end of both side plate；It is respectively arranged in the lower end of top board and the upper end of bottom plate
Roller bearing groove and lower roller bearing groove are embedded with upper roller bearing and lower roller bearing respectively in upper roller bearing groove and in lower roller bearing groove, on
The upper surface of roller bearing and beam-ends is pressed into contact with, and the bottom surface of lower roller bearing and beam-ends is pressed into contact with, and beam-ends is made to form limit along the vertical direction
Position；
Two groups of opposite vertical long holes are provided on both side plate, running through in one group of opposite vertical long hole has beam-ends limit
Position bar is simultaneously fastened by nut, is equipped with roll sleeve in the rod segment on beam-ends gag lever post between both side plate, roll sleeve and
Beam-ends lateral surface is in contact, and forms beam-ends along beam length direction and limits；A left side is respectively coated in another group of opposite vertical long hole
Gag lever post and right limit bar, left and right two gag lever posts coaxial arrangement, and fastened respectively by the nut respectively connected, in left limit
Position bar inner end and right limit bar inner end are respectively fixed with left side plate and right end plate, left side plate and right end plate respectively with the left side of beam-ends
Face and right side are pressed into contact with, and beam-ends is made to form limit in left-right direction.
And, it is respectively connected with a vertical threaded rod in the upper end of both side plate, is respectively set on top board by the position of two close end
It is equipped with a screw rod mounting hole, top board is threaded on two vertical threaded rods by two screw rods mounting hole, on two vertical threaded rods
Upper end positioned at top board is connected with locking nut, and top board and both side plate is made to be connected in a manner of adjustable up and down.
And, both side plate is connect by welding with bottom plate, is welded between the outside and bottom plate of both side plate
Ribs.
The advantages and positive effects of the present invention are:
1, top board is fixedly connected in a manner of adjustable up and down with the upper end of both side plate, can be according to the size of test specimen cross section
Adjustment up and down is carried out, vertical test space can be flexibly controlled, play the role of vertical spacing, prevent beam during the test
Vertical displacement its stability can be improved for the beam in high section in cyclic load.
2, vertical long hole is set on both side plate, can adjust the position of left side plate, right end plate and roll sleeve, to realize root
According to the flexible in size control constraints point of beam cross section, test space and its lateral displacement is limited, for the beam in wide section
Component improves its stability.
3, roll sleeve can be rolled freely on beam-ends gag lever post, limit while can with the rotation of beam-ends freedom
It rolls, will not influence the true stress of beam.
4, the lower roller bearing of bottom plate upper end and the upper roller bearing of top board lower end play hold-down support and the constraint examination of simply supported beam
The effect of the vertical displacement of part will not influence the true stress of beam due to small and cambered with the contact area of beam.
5, both side plate and bottom plate further use integrally molded structure, and are welded on the outside of both side plate and step up rib, ensure that beam
Hold the rigidity and its stability of support.
By above structure, this beam end support can for beam-ends left and right directions, up and down direction and length direction along beam
Good effect of contraction is provided, while the displacement that beam end support is on horizontal or vertical direction can be limited, without influencing beam type
The turning power of component ends, to achieve the purpose that reduce test error, it is ensured that the smooth implementation of test.This beam test
Simple with beam end support fixing means principle, device is detachable, simplifies test procedure, it is ensured that test smoothly and accurately into
Row.
Detailed description of the invention
Fig. 1 is front view of the invention；
Fig. 2 is right view of the invention；
Fig. 3 is the structural schematic diagram of beam-ends of the present invention and upper roller bearing, lower roller bearing and roll sleeve cooperation；
Fig. 4 is schematic perspective view of the invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawing and by specific embodiment, and following embodiment is descriptive
, it is not restrictive, this does not limit the scope of protection of the present invention.
A kind of beam test beam end support, referring to Figure 1-4, inventive point are as follows:
Including bottom plate 9, in parallel the left plate 15 and right side plate 5 that are fixed on bottom plate, the upper pressure being set to above both side plate
Plate 3, surrounds the space being inserted into for beam-ends 11 between bottom plate, both side plate and top board, top board is in a manner of adjustable up and down with two
The upper end of side plate is fixedly connected.Upper roller bearing groove is respectively arranged in the lower part of top board and the top of bottom plate and lower roller bearing is recessed
Slot, two roller bearing grooves are all made of semi-circular recesses structure, are embedded with upper rolling in upper roller bearing groove and in lower roller bearing groove respectively
The upper surface of axis 4 and lower roller bearing 13, upper roller bearing and beam-ends is pressed into contact with, and the bottom surface of lower roller bearing and beam-ends is pressed into contact with, and makes beam-ends
Limit is formed along the vertical direction.
Two groups of opposite vertical long holes 17 are provided on both side plate.Running through in one group of opposite vertical long hole has beam-ends
Gag lever post 7 is simultaneously fastened by nut.Roll sleeve 12 is installed in the rod segment on beam-ends gag lever post between both side plate,
Roll sleeve is in contact with beam-ends lateral surface, forms beam-ends along beam length direction and limits.Specifically, corresponding to vertical long hole on left plate
Two sides and right side plate on correspond to the two sides of vertical long hole and be provided with the nut connecting with beam-ends gag lever post, by tightening four
Beam-ends gag lever post can be fixed on a certain position to vertical long hole by nut, and after unclamping four nuts, it can be along this to perpendicular
To the upper and lower position of long hole adjustment beam-ends gag lever post, to be preferably suitable for the requirement of experiment of the beam of different height.
Left limit bar 16 and right limit bar 8 are respectively coated in another group of opposite vertical long hole, two gag lever posts of left and right are same
Axis setting, and fastened respectively by the nut respectively connected.It is fixed respectively in left limit bar inner end and right limit bar inner end
There are left side plate 14 and right end plate 10, left side plate and right end plate are pressed into contact with the left side of beam-ends and right side respectively, make beam-ends
Limit is formed in left-right direction.Specifically, being located at right side positioned at the two sides of left plate and on right limit bar on left limit bar
The two sides of plate respectively connect a nut, are separately fixed on left plate in this way, left limit bar and right limit bar pass through two nuts
The vertical long hole of correspondence in and right side plate on the vertical long hole of correspondence in, by unscrew corresponding two nuts can realize left limit bar and
The upper and lower position of right limit bar is adjusted, and left limit bar can be achieved in addition, adjusting by the cooperation of two attaching nuts of left limit bar
Left-right position adjustment, while the left-right position that right limit bar can be achieved is adjusted by the cooperation of two attaching nuts of right limit bar
Adjust, in this way, can meet different height, different in width beam test requirements document.
In above structure, the connection of top board and both side plate is further realized in the following way:
It is respectively connected with a vertical threaded rod 1 in the upper end of both side plate, leans on the position of two close end to be each provided with one on top board
Screw rod mounting hole, top board are threaded on two vertical threaded rods by two screw rods mounting hole, are located on two vertical threaded rods upper
The upper end of pressing plate is connected with locking nut 2, and top board and both side plate is made to be connected in a manner of adjustable up and down.Connection type tool
Have that structure is simple, advantage easy to adjust.
In above structure, both side plate is preferably connect by welding with bottom plate, both side plate outside and bottom plate it
Between be welded further ribs 6, the bonding strength of side plate and bottom plate can be improved.
This beam end support needs two beam end supports when in use while using, i.e., the both ends difference of beam to be tested
It is supported on two beam end supports at both ends, the bottom plate of two beam end supports is fixedly connected by bolt with experimental bench, is increased
The overall stability of two beam end supports is added.
Although disclosing the embodiment of the present invention and attached drawing for the purpose of illustration, those skilled in the art can be managed
Solution: do not departing from the present invention and spirit and scope of the appended claims in, various substitutions, changes and modifications be all it is possible,
Therefore, the scope of the present invention is not limited to the embodiment and attached drawing disclosure of that.
Claims (3)
1. a kind of beam test beam end support, it is characterised in that: including bottom plate, in parallel be fixed on left and right side plates on bottom plate and
The top board being set to above both side plate, surrounded between bottom plate, both side plate and top board for beam-ends insertion space, top board with
Upper and lower adjustable mode is fixedly connected with the upper end of both side plate；Upper rolling is respectively arranged in the lower end of top board and the upper end of bottom plate
Axis groove and lower roller bearing groove are embedded with upper roller bearing and lower roller bearing, upper rolling respectively in upper roller bearing groove and in lower roller bearing groove
The upper surface of axis and beam-ends is pressed into contact with, and the bottom surface of lower roller bearing and beam-ends is pressed into contact with, and beam-ends is made to form limit along the vertical direction；
Two groups of opposite vertical long holes are provided on both side plate, running through in one group of opposite vertical long hole has beam-ends limit
Bar is simultaneously fastened by nut, and roll sleeve, roll sleeve and beam are equipped in the rod segment on beam-ends gag lever post between both side plate
End lateral surface is in contact, and forms beam-ends along beam length direction and limits；Left limit is respectively coated in another group of opposite vertical long hole
Position bar and right limit bar, left and right two gag lever posts coaxial arrangement, and fastened respectively by the nut respectively connected, in left limit
Bar inner end and right limit bar inner end are respectively fixed with left side plate and right end plate, left side plate and right end plate respectively with the left side of beam-ends
It is pressed into contact with right side, beam-ends is made to form limit in left-right direction.
2. beam test beam end support according to claim 1, it is characterised in that: be respectively connected with one in the upper end of both side plate
Vertical threaded rod, the position on top board by two close end are each provided with a screw rod mounting hole, and top board passes through two screw rods mounting hole
It is threaded on two vertical threaded rods, the upper end on two vertical threaded rods positioned at top board is connected with locking nut, makes top board
With both side plate by up and down it is adjustable in a manner of be connected.
3. beam test beam end support according to claim 1, it is characterised in that: the side that both side plate and bottom plate pass through welding
Formula connection, is welded with ribs between the outside and bottom plate of both side plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910111164.4A CN109655217A (en) | 2019-02-12 | 2019-02-12 | A kind of beam test beam end support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910111164.4A CN109655217A (en) | 2019-02-12 | 2019-02-12 | A kind of beam test beam end support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109655217A true CN109655217A (en) | 2019-04-19 |
Family
ID=66122257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910111164.4A Pending CN109655217A (en) | 2019-02-12 | 2019-02-12 | A kind of beam test beam end support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109655217A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110385594A (en) * | 2019-08-19 | 2019-10-29 | 深圳市强浪机械设备有限公司 | A kind of hold-down mechanism and its rotation bead cutter of rotation bead cutter |
| CN114279815A (en) * | 2021-12-27 | 2022-04-05 | 河南工业大学 | Beam end support |
Citations (5)
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|---|---|---|---|---|
| KR100930805B1 (en) * | 2008-08-08 | 2009-12-09 | 성균관대학교산학협력단 | Twister for girder test |
| CN105842058A (en) * | 2016-05-13 | 2016-08-10 | 重庆交通大学 | Asphalt mixture beam specimen bending fatigue test fixture |
| CN106644268A (en) * | 2017-03-13 | 2017-05-10 | 天津城建大学 | Beam test support seat |
| CN109163862A (en) * | 2018-08-15 | 2019-01-08 | 招商局重工（江苏）有限公司 | A kind of pressure-measuring method of pipe fitting |
| CN209416633U (en) * | 2019-02-12 | 2019-09-20 | 天津城建大学 | A kind of beam test beam end support |
-
2019
- 2019-02-12 CN CN201910111164.4A patent/CN109655217A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100930805B1 (en) * | 2008-08-08 | 2009-12-09 | 성균관대학교산학협력단 | Twister for girder test |
| CN105842058A (en) * | 2016-05-13 | 2016-08-10 | 重庆交通大学 | Asphalt mixture beam specimen bending fatigue test fixture |
| CN106644268A (en) * | 2017-03-13 | 2017-05-10 | 天津城建大学 | Beam test support seat |
| CN109163862A (en) * | 2018-08-15 | 2019-01-08 | 招商局重工（江苏）有限公司 | A kind of pressure-measuring method of pipe fitting |
| CN209416633U (en) * | 2019-02-12 | 2019-09-20 | 天津城建大学 | A kind of beam test beam end support |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110385594A (en) * | 2019-08-19 | 2019-10-29 | 深圳市强浪机械设备有限公司 | A kind of hold-down mechanism and its rotation bead cutter of rotation bead cutter |
| CN114279815A (en) * | 2021-12-27 | 2022-04-05 | 河南工业大学 | Beam end support |
| CN114279815B (en) * | 2021-12-27 | 2024-03-12 | 河南工业大学 | Beam end support |
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