CN207570933U - A kind of experimental rig of metal arc arch structure part concentrated force loading - Google Patents
A kind of experimental rig of metal arc arch structure part concentrated force loading Download PDFInfo
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- CN207570933U CN207570933U CN201721643881.4U CN201721643881U CN207570933U CN 207570933 U CN207570933 U CN 207570933U CN 201721643881 U CN201721643881 U CN 201721643881U CN 207570933 U CN207570933 U CN 207570933U
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- arch structure
- metal arc
- structure part
- load beam
- arc arch
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Abstract
The utility model is related to a kind of experimental rigs of metal arc arch structure part concentrated force loading, it is characterized in that, the experimental rig includes removable supporting table, hoist lifting device, pressure sensor and the laser displacement sensor of the frame of doorframe shape, the load beam of placement mass block, bearing metal arc arch structure part to be tested.Experimental rig described in the utility model can not only apply arch structure impact load, but also arch structure can be applied and concentrate dead load.
Description
Technical field
The utility model is related to the strength characteristicies with mechanical stress test solid material, more particularly to metal arc arch structure
The experimental rig of part strength characteristics.
Background technology
In the modern bridge system of rapid development, arch structure is with its span ability is strong, bearing capacity is high, structure is merrily and lightheartedly beautiful
Seeing and make the advantages such as easy for construction, at home and abroad field of civil engineering is widely used.Arch leads under load action
It crosses arch axis and the moment of flexure that external load generates is converted into axial compressive force, therefore larger horizontal thrust is generated in arch springing, easily lose steady
It is fixed.The instability forms of arch are various and unstability before without apparent omen, the factor for influencing arch structure stabilization is numerous, non-linear relatively strong, because
The stability study of this arch often becomes the critical issue in design.
Publication No. CN 104990720A patent applications disclose a kind of domes finder charge loading device, the dress
It puts including " domes 4, geosyncline 10, the bottom both ends of the domes 4 are connected through pedestal 12, bolt 8 and geosyncline 10, institute
State domes 4 peripheral surface be coated with one layer loading steel plate 13, inner peripheral surface be provided with for monitoring node shift value with
The displacement deformation of unit strain value monitors system, and several be used for arch knot is provided in the peripheral surface of the loading steel plate 13
Structure applies radially prestressed prestressed load bringing device.Although " scheme of the patent application can solve existing experiment plus
The problem that non-symmetrical load applies in load scheme, but also there are following deficiencies：First, impact load can not be applied, second is that arch
The peripheral surface of structure 4 is coated with three blocks of loading steel plates 13, therefore what is applied is still local uniform dead load, can not be applied
Dead load is concentrated, key position vault can not especially be applied and concentrate dead load.
Invention content
The technical problem to be solved by the utility model is to provide a kind of examinations of metal arc arch structure part concentrated force loading
Experiment device, which can not only apply vault impact load, but also vault can be applied and concentrate dead load.
The utility model solve above-mentioned technical problem technical solution be：
A kind of experimental rig of metal arc arch structure part concentrated force loading, which is characterized in that
The experimental rig includes the frame of doorframe shape, the load beam for placing mass block, supports metal arc arch structure to be tested
Removable supporting table, hoist lifting device, pressure sensor and the laser displacement sensor of part, wherein,
The frame is made of two root posts and the cross bar being supported at the top of two root posts, and wherein two root posts is opposite
The guide groove being equipped with relatively along its length on face, the both ends of the load crossbeam are put in the guide groove, and therebetween
Dynamic cooperation；
The removable supporting table of the bearing metal arc arch structure part to be tested is made of two columnar piers；Described
Removable supporting table is located at the lower section of the load beam, and two columnar piers horizontal plane projective distribution in the lotus
Crossbeam is carried in the both sides that horizontal plane projects；The top surface of the pier is equipped with the clamping plate of fixed metal arc arch structure part to be tested, should
Clamping plate is arranged in by bolt in pier；
The cross bar of the frame is equipped with first pulley, and steel wire rope bypasses first pulley in the hoist lifting device
End system is connected on the middle part of the load beam；
The pressure sensor is fixed on the middle part of the load beam lower surface；
The laser displacement sensor is located at the centre of two columnar piers, and Laser emission faced with receiver hole it is described
The middle part of load beam lower surface.
In order to simplify structure, equipment manufacturing cost is reduced, the hoist lifting device described in said program is manual hoisting
Device, it includes pedestal and is located at reel, gear reduction, detent mechanism and the crank of the winding steel wire rope in pedestal,
Wherein,
The pedestal is U-shaped, and the rotation of the reel and crank is pivotally supported on the side plate of U-shaped pedestal；It is described
Gear reduction by be fixed in the rotation axis of the crank in driving gear and directly the reel ends process shape
It is formed into driven gear；
The ratchet mechanism includes pawl and extension spring, wherein, the active is hinged in the middle part of the pawl
By gear on the side plate of the U-shaped pedestal, pawl head can put in the wheel between cog of the driving gear, and end is equipped with mounting hole；
The manual hoist lifting device is fixed on by its pedestal on the lateral surface of a root post of the frame, should
Second pulley is equipped at the top of column；One fixation of the steel wire rope and wound on the reel, other end is around described the
One pulley and second pulley are fixed on the middle part of the load beam.
In order to which finder charge is made more to concentrate, the lower surface of the pressure sensor can also fix the triangle of a strip
Block, the seamed edge metal arc arch structure part to be tested of the corner block are vertical.
The utility model has following advantageous effect：
1st, it is carried out since the both ends of load crossbeam are moved to match to merge with guide groove by the utility model using hoist lifting device
Control, while can be moved integrally, therefore both can be to the metal after metal arc arch structure part to be tested is fixed in two piers
The lateral any position of arch applies impact load, and lateral any position can be applied and concentrate dead load.
2nd, the size of finder charge can be changed by increasing and decreasing mass block, it is simple and convenient.
3rd, installation facility, in-site installation need not employ big machinery.
Description of the drawings
Structure diagram of Fig. 1~3 for a specific embodiment of experimental rig described in the utility model, wherein, Fig. 1 is
Front view, Fig. 2 are vertical view, and Fig. 3 is right view (vertical along Fig. 1 symmetrically divides face section view equally).
Fig. 4 and Fig. 5 is the structure diagram of manual hoist lifting device in the illustrated embodiment of Fig. 1~3, wherein, based on Fig. 4
View, Fig. 5 are vertical view.
Fig. 6 is a kind of usage state diagram of manual hoist lifting device shown in Fig. 4 and Fig. 5.
Specific embodiment
Referring to Fig. 1~3, frame of the entire experimental rig including doorframe shape, the load beam 2 for placing mass block 4, bearing are to be tested
Removable supporting table, manual hoist lifting device, pressure sensor 11 and the laser displacement sensor of metal arc arch structure part 9
13, wherein each component detailed construction is as described below.
Referring to Fig. 1~3, the frame is made of two root posts 1 and the cross bar 3 being supported at the top of two root posts 1, wherein
Along its length with respect to the guide groove 14 equipped with T shapes on the opposite face of two root posts 1, the both ends of load crossbeam 2 are equipped with T forming heads,
The T forming heads are put in 14 in guide groove, and move cooperation therebetween.
Referring to Fig. 1~3, the removable supporting table of the bearing metal arc arch structure part 9 to be tested is by two columnar
Pier 10 forms；The removable supporting table is located at the lower section of load beam 2, and two columnar piers 10 are in the projection point of horizontal plane
Load crossbeam 2 is distributed at the both sides that horizontal plane projects (see Fig. 2).The top surface of the pier 10 is equipped with fixed metal arch to be tested
The clamping plate 16 of structural member 9, the clamping plate 16 are arranged in by bolt 17 in pier 10；
Referring to Fig. 4 and Fig. 5, the manual hoist lifting device 8 includes pedestal 8-1 and the reel being located in pedestal 8-1
8-2, gear reduction, ratchet mechanism and crank 8-3.The pedestal 8-1 is turn of U-shaped, reel 8-2 and crank 8-3
Moving axis is supported on the side plate of pedestal 8-1.The mechanical reduction gear is by being fixed in the rotation axis of crank 8-3 in driving tooth
It takes turns 8-4 and is processed directly on the outside of reel 8-2 ends and form driven gear 8-5 compositions.The ratchet mechanism includes pawl 8-6
With extension spring 8-7, wherein, be hinged in the middle part of pawl 8-6 by the driving gear 8-4 on the side plate of U-shaped pedestal 8-1,
Pawl head can put in the wheel between cog of driving gear 8-4, and end is equipped with mounting hole 8-8.
Referring to Fig. 6 and with reference to Fig. 4, for ease of fixed pawl 8-6, a hook can be also set on the side plate of the pedestal 8-1
8-9.When need by the load beam 2 be suspended in some position it is motionless when, can will hook 8-9 be hooked in set by pawl 8-6 ends
Mounting hole 8-8 in.The hook 8-9 is obviously also substituted with rope.
Referring to Fig. 4 and Fig. 5 and Fig. 1~3 are combined, the manual hoist lifting device is fixed by pedestal 8-1 therein
On the lateral surface of one root post 1 of the right of the frame, 3 end face of cross bar at 1 top of column is equipped with second pulley 7, middle part
It is respectively equipped with first pulley 6；One fixation of the steel wire rope 15 and on reel 8-2, other end are slided around first
Wheel 6 and second pulley 7 are fixed on the middle part of load beam 2.
Referring to Fig. 1, the pressure sensor 11 is fixed on the middle part of 2 lower surface of load beam；The laser displacement passes
Sensor 13 is located at the centre of two columnar piers 10, and Laser emission faces the middle part of 2 lower surface of load beam with receiver hole.
Referring to Fig. 1, when experiment, can symmetrically fix two mass blocks 4 above load beam 2, the mass block 4 can with a huge sum of money
Belong to lead, to reduce volume.
Referring to Fig. 1, in order to which finder charge is made more to concentrate, the lower surface of the pressure sensor 11 can also fix one
The corner block 5 of shape, a seamed edge face of the corner block 5 is on the lateral symmetry bisector of metal arc arch structure part 9 to be tested.
It is as follows to the test method for belonging to arch structural member progress static load and shock loading using this experimental rig gold
It is described.
First, static load
It is operated according to the following steps referring to Fig. 1~6：
1st, the crank 8-3 of manual hoist lifting device 8 is shaken clockwise, load beam 2 is promoted to certain height, then will
The both ends of metal arc arch structure part 9 to be tested are fixed in pier 10, and move integrally the removable supporting table so that three
The downward seamed edge of hornblock 5 is vertical with metal arc arch structure part 9 to be tested and face position to be loaded；
2nd, toward mass block 4 symmetrically placed in load beam 2, and the total weight of mass block 4 is caused to be slightly larger than metal arc to be tested
The maximum load-carrying capacity of arch structure part 9；
3rd, hook 8-9 is hooked in the mounting hole 8-8 set by pawl 8-6 ends, makes the pawl head and driving gear of pawl 8-6
8-4 is disengaged；
4th, crank 8-3 is controlled manually, and load beam 2 is made slowly to move down, when 5 contacting metal arch structural member 9 of corner block,
Start pressure sensor 11 and laser displacement sensor 13, obtain load and displacement data respectively, until metal arch to be tested
Until 9 downwarp of structural member is surrendered.
2nd, impact load
It is operated according to the following steps referring to Fig. 1~5：
1st, the crank 8-3 of manual hoist lifting device 8 is shaken clockwise, load beam 2 is promoted into preset theoretical level, so
The both ends of metal arc arch structure part 9 to be tested are fixed in pier 10 afterwards, and move integrally the removable supporting table, are made
Corner block 5 it is downward seamed edge is vertical with metal arc arch structure part 9 to be tested and face position to be loaded；
2nd, toward mass block 4 symmetrically placed in load beam 2, and so that the total weight of mass block 4 is metal arch knot to be tested
The theoretical weight of the maximum impact resistance of component 9；
3rd, start pressure sensor 11 and laser displacement sensor 13, while hook 8-9 is hooked in set by pawl 8-6 ends
Mounting hole 8-8 in, the pawl head of pawl 8-6 is made to be disengaged with driving gear 8-4, load beam 2 falls suddenly, by pressure sensor 11
Obtain the load and displacement data of entire impact process simultaneously with laser displacement sensor 13.
Claims (3)
1. a kind of experimental rig of metal arc arch structure part concentrated force loading, which is characterized in that
The experimental rig includes the frame of doorframe shape, the load beam for placing mass block, supports metal arc arch structure part to be tested
Removable supporting table, hoist lifting device, pressure sensor and laser displacement sensor, wherein,
The frame is made of two root posts and the cross bar being supported at the top of two root posts, wherein on the opposite face of two root posts
The opposite guide groove being equipped with, the both ends of the load beam are put in the guide groove along its length, and move cooperation therebetween；
The removable supporting table of the bearing metal arc arch structure part to be tested is made of two columnar piers；Described is removable
Dynamic supporting table is located at the lower section of the load beam, and two columnar piers horizontal plane projective distribution in the load beam
In the both sides of horizontal plane projection；The top surface of the pier is equipped with the clamping plate of fixed metal arc arch structure part to be tested, the clamping plate by
Bolt is arranged in pier；
The cross bar of the frame is equipped with first pulley, and steel wire rope bypasses first pulley end in the hoist lifting device
System is connected on the middle part of the load beam；
The pressure sensor is fixed on the middle part of the load beam lower surface；
The laser displacement sensor is located at the centre of two columnar piers, and Laser emission faces the load with receiver hole
The middle part of beam lower surface.
2. a kind of experimental rig of metal arc arch structure part concentrated force loading according to claim 1, which is characterized in that
The hoist lifting device is manual hoist lifting device, it includes pedestal and is located at the volume of the winding steel wire rope in pedestal
Cylinder, gear reduction, detent mechanism and crank, wherein,
The pedestal is U-shaped, and the rotation of the reel and crank is pivotally supported on the side plate of U-shaped pedestal；The tooth
Wheel deceleration mechanism forms quilt by being fixed in the rotation axis of the crank in driving gear and directly being processed in the reel ends
Moving gear forms；
The detent mechanism includes pawl and extension spring, wherein, the driving gear is hinged in the middle part of the pawl
On the side plate of the other U-shaped pedestal, pawl head can put in the wheel between cog of the driving gear, and end is equipped with mounting hole；
The manual hoist lifting device is fixed on by its pedestal on the lateral surface of a root post of the frame, the column
Top is equipped with second pulley；One fixation of the steel wire rope and wound on the reel, other end is slided around described first
Wheel and second pulley are fixed on the middle part of the load beam.
3. a kind of experimental rig of metal arc arch structure part concentrated force loading according to claim 1 or 2, feature exist
In the corner block of a strip, a seamed edge of the corner block and metal arc to be tested are fixed in the lower surface of the pressure sensor
Arch structure part is vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721643881.4U CN207570933U (en) | 2017-12-01 | 2017-12-01 | A kind of experimental rig of metal arc arch structure part concentrated force loading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721643881.4U CN207570933U (en) | 2017-12-01 | 2017-12-01 | A kind of experimental rig of metal arc arch structure part concentrated force loading |
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| Publication Number | Publication Date |
|---|---|
| CN207570933U true CN207570933U (en) | 2018-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721643881.4U Active CN207570933U (en) | 2017-12-01 | 2017-12-01 | A kind of experimental rig of metal arc arch structure part concentrated force loading |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655342A (en) * | 2019-01-29 | 2019-04-19 | 西南交通大学 | A kind of molecule sample shattering process research experiment device and its experimental method |
| CN117571512A (en) * | 2024-01-19 | 2024-02-20 | 常州市恒力电磁屏蔽设备有限公司 | Shielding door performance testing device |
-
2017
- 2017-12-01 CN CN201721643881.4U patent/CN207570933U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655342A (en) * | 2019-01-29 | 2019-04-19 | 西南交通大学 | A kind of molecule sample shattering process research experiment device and its experimental method |
| CN109655342B (en) * | 2019-01-29 | 2021-04-06 | 西南交通大学 | Experimental device and experimental method for researching crushing process of micro-particle sample |
| CN117571512A (en) * | 2024-01-19 | 2024-02-20 | 常州市恒力电磁屏蔽设备有限公司 | Shielding door performance testing device |
| CN117571512B (en) * | 2024-01-19 | 2024-03-15 | 常州市恒力电磁屏蔽设备有限公司 | Shielding door performance testing device |
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