CN206194218U - A device is applyed to moment of torsion for structural mechanics experiment - Google Patents

A device is applyed to moment of torsion for structural mechanics experiment Download PDF

Info

Publication number
CN206194218U
CN206194218U CN201621077222.4U CN201621077222U CN206194218U CN 206194218 U CN206194218 U CN 206194218U CN 201621077222 U CN201621077222 U CN 201621077222U CN 206194218 U CN206194218 U CN 206194218U
Authority
CN
China
Prior art keywords
torsion
moment
rod member
transfer panel
bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN201621077222.4U
Other languages
Chinese (zh)
Inventor
陈廷国
谢鹏
胡乔元
勾国勇
李映雪
王祖能
任珵娇
段迪
陈璨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dalian University of Technology
Original Assignee
Dalian University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dalian University of Technology filed Critical Dalian University of Technology
Priority to CN201621077222.4U priority Critical patent/CN206194218U/en
Application granted granted Critical
Publication of CN206194218U publication Critical patent/CN206194218U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

The utility model belongs to civil engineering specialty structural mechanics experiment teaching field provides a device is applyed to moment of torsion for structural mechanics experiment, and the device is applyed to this moment of torsion can or apply the moment of torsion to the member to the support. This moment of torsion is applyed the device and is rotated the rotatory hand wheel of worm gear lift through hand mode, and the lift drives splined connection piece, torque sensor, moment of torsion and applys switching dish, support switching dish, rotary angle transmitter connecting piece, rotary angle transmitter and rotate together, end reaction (moment of torsion) that torque sensor's reading received for superstructure promptly, support displacement that rotary angle transmitter's reading was located for the support promptly. The utility model discloses can be according to experiment content's needs, through worm gear lift, torque sensor, rotary angle transmitter and related accessories's connection, moment of torsion, installation, dismantlement convenience, convenient to use are applyed to support, member to nimble the realization.

Description

A kind of torque application device for structural mechanics experiment
Technical field
The utility model belongs to civil engineering structural mechanics experimental teaching field, is related to a kind of for structural mechanics reality The torque application device tested.
Background technology
Structural mechanics is the mandatory subject of institution of higher learning's civil engineering, and theory teaching is all the time institution of higher learning's knot The main teaching method of structure mechanics, but the attention with higher education to experimental teaching, carrying out structural mechanics experiment also turns into one Plant imperative trend.
The load form that structural mechanics experiment is generally related to has three kinds:Load, evenly load, moment of torsion load.Collection Middle load is load form the most frequently used during structural mechanics is tested, and its loading device makes simple, and can meet most experiments Need, in the market there are many load loading devices, and most products work well.Evenly load loading device is typically more multiple It is miscellaneous, and most experiment do not limit and uses evenly load, so being rarely employed in structural mechanics experiment.
The situation of moment of torsion load loading device is differed with the above two, and first, the exploitation of moment of torsion load loading device is Necessary, (being solved using displacement method has the indeterminate knot of angular displacement for several important experiments in structural mechanics experiment Structure, moment distribution method, counter-force reciprocal theorem) it is directed to the applying of moment of torsion load;Secondly as moment of torsion load loading device system Make difficulty larger, the reliable loading device of in the market is extremely limited.Accordingly, as indispensable in structural mechanics experimental study A part, reliably and easily moment of torsion load loading device becomes pressing issue.
The utility model provides a kind of torque application device for structural mechanics experiment, is lifted by worm and gear The connection of machine, torque sensor, rotary angle transmitter and related accessory, is capable of achieving bearing, rod member and applies moment of torsion, is structural mechanics Experiment be smoothed out lay a good foundation.
Utility model content
In view of the shortcomings of the prior art, the present situation of moment of torsion load, utility model are lacked in the current Teaching of Structural Mechanics of change A kind of torque application device for structural mechanics experiment, realizes applying moment of torsion to bearing, rod member.
In order to achieve the above object, the technical solution of the utility model is as follows:
A kind of torque application device for structural mechanics experiment, the torque application device can be to bearing or to rod member Apply moment of torsion, be below two kinds of concrete structure descriptions of situation:
When the torque application device applies moment of torsion to bearing, described torque application device includes bottom backing plate 1, worm gear Worm screw lift 2, splined connection 3, torque sensor 4, moment of torsion apply transfer panel 5, bearing transfer panel 6, seat supports device 7a, 7b, rotary angle transmitter connector 8, rotary angle transmitter 9 and rigid connection rod member 10.The described bottom of worm and gear lift 2 adds Pad, and be connected with bottom backing plate 1 by bolt;Described seat supports device 7a, 7b bottoms are arranged on bottom backing plate 1 Portion, the bottom of bottom backing plate 1 is arranged on experiment porch;Described worm and gear lift 2 is passed by splined connection 3 with moment of torsion Sensor 4 is connected, and the inner tubal wall of torque sensor 4 posts four foil gauges, and outside is provided with a joint and is set with collection by enamel-covered wire It is standby to be connected, measuring circuit is constituted, for the output of moment of torsion.
Described torque sensor 4 applies the side of transfer panel 5 and is connected by 6 bolts and moment of torsion;Described moment of torsion applies There is a vertical through hole at the opposite side center of transfer panel 5, and the described side of bearing transfer panel 6 has one to apply transfer panel 5 with moment of torsion Corresponding vertically oriented aperture there-through, the two is fixedly connected by passing perpendicularly through the stay bolt at center;Described bearing transfer panel 6 is left Right both sides are connected by bearing with two seat supports devices 7a, 7b respectively, bearing transfer panel 6 and seat supports device 7a, 7b Between can be relatively rotated by bearing;The described middle part of bearing transfer panel 6 is connected by 6 bolts with rigid connection rod member 10, just The top of extension bar part 10 is used for connecting various experimental configurations, and the center of bearing transfer panel 6 has what is matched with the bottom of rigid connection rod member 10 Screw hole;The opposite side of described bearing transfer panel 6 is connected by rotary angle transmitter connector 8 with rotary angle transmitter 9.Described Four foil gauges are posted in rotary angle transmitter 9, outside is provided with a joint and is connected with collecting device by enamel-covered wire, composition measurement Circuit, for the output of corner displacement.
It is the lifting when worm and gear lift rotation hand wheel is rotated by hand mode that the present apparatus can achieve the effect that Chance drives splined connection, torque sensor, moment of torsion to apply transfer panel, bearing transfer panel, rotary angle transmitter connector, corner Sensor is rotated together, and the reading of torque sensor is the end reaction (moment of torsion) that superstructure is subject to, rotary angle transmitter Reading is the support displacement (rotation displacement) at bearing.
When the torque application device applies moment of torsion to rod member, described torque application device includes bottom backing plate 1, worm gear Worm screw lift 2, lift cushion block 14, splined connection 3, torque sensor 4, moment of torsion apply transfer panel 5, rod member fixture 11, Hinged-support 12, equal height cushion block 13, rotary angle transmitter connector 8, rotary angle transmitter 9 and rod member 15.Described worm and gear lifting The bottom of machine 2 is arranged on the top of lift cushion block 14 by bolt, and the bottom of lift cushion block 14 is arranged on bottom backing plate 1 by bolt Top side;The described bottom of equal height cushion block 13 is arranged on the top opposite side of bottom backing plate 1 by bolt;The bottom of bottom backing plate 1 It is arranged on experiment porch by bolt;Described worm and gear lift 2 is connected by splined connection 3 with torque sensor 4 Connect, torque sensor inner tubal wall posts four foil gauges, outside is provided with a joint and is connected with collecting device by enamel-covered wire, group Into measuring circuit, for the output of moment of torsion.
Described torque sensor 4 applies the side of transfer panel 5 and is connected by 6 bolts and moment of torsion;Described moment of torsion applies There is a vertical through hole at the opposite side center of transfer panel 5, and the described side of rod member fixture 11 has one to apply transfer panel 5 pairs with moment of torsion The vertically oriented aperture there-through answered, the two is fixedly connected by passing perpendicularly through the stay bolt at center;Described rod member fixture 11 it is another Side is connected by rotary angle transmitter connector 8 with rotary angle transmitter 9, and the centre bit of rod member fixture 11 is equipped with the screw hole of matching; The described middle part of rod member fixture 11 fixed installation rod member 15, the described middle part of rod member fixture 11 has what is matched with the size of rod member 15 to lead to Hole;The through hole being consistent with the outside dimension of rod member fixture 11 arranged at the described top of hinged-support 12, and rod member fixture 11 is by through hinged The through hole on 12 tops of seat, is connected with hinged-support 12, can be relatively rotated between rod member fixture 11 and hinged-support 12;Described is hinged Seat 12 is arranged on the top of equal height cushion block 13 by 6 bolts, and the described bottom of equal height cushion block 13 is arranged on bottom backing plate 1;Institute Four foil gauges are posted in the rotary angle transmitter 9 stated, outside is provided with a joint and is connected with collecting device by enamel-covered wire, composition Measuring circuit, for the output of corner displacement;The described two ends of rod member 15 are used for connecting various experiment rod members, constitute structure, enter Row experiment.
It is the lifting when worm and gear lift rotation hand wheel is rotated by hand mode that the present apparatus can achieve the effect that Chance drives splined connection, torque sensor, moment of torsion to apply transfer panel, rod member fixture, rotary angle transmitter connector, corner and passes Sensor is rotated together, and the reading of torque sensor is the moment of torsion load being applied on rod member, and the reading of rotary angle transmitter is The rotation displacement of the point on rod member.
The beneficial effects of the utility model are:The need for according to experiment content, by worm and gear lift, torque sensing The connection of device, rotary angle transmitter and related accessory, can flexibly realize applying bearing, rod member moment of torsion, installation, convenient disassembly, It is easy to use.
Brief description of the drawings
Fig. 1 is to apply torquer schematic front view to bearing;
Fig. 2 is to apply torquer schematic top plan view to bearing;
Fig. 3 is to apply torquer schematic front view to rod member;
Fig. 4 is to apply torquer schematic top plan view to rod member;
Fig. 5 is bearing transfer panel main view structural map;
Fig. 6 is that bearing transfer panel overlooks structural map;
Fig. 7 is bearing transfer panel side-looking structural map;
Fig. 8 is to apply bearing corner displacement schematic device to statically indeterminate rigid frame structure;
Fig. 9 is to apply moment of torsion load means schematic diagram to statically indeterminate beam structure;
In figure:1 bottom backing plate;2 worm and gear lifts;3 splined connections;4 torque sensors;5 moments of torsion apply switching Disk;6 bearing transfer panels;7a, 7b seat supports device;8 rotary angle transmitter connectors;9 rotary angle transmitters;10 rigid connection rod members;11 Rod member fixture;12 hinged-supports;13 equal height cushion blocks;14 lift cushion blocks;15 rod members.
Specific embodiment
The utility model can be by the company of worm and gear lift, torque sensor, rotary angle transmitter and related accessory Connect, flexible assembling can apply moment of torsion into two sets of torque application devices to bearing, to rod member respectively, below in conjunction with the accompanying drawings and implement Example is described further to implementation method of the present utility model.
A kind of torque application device for structural mechanics experiment, the torque application device can be to bearing or to rod member Apply moment of torsion, be below two kinds of concrete structure descriptions of situation:
When the torque application device to bearing apply moment of torsion when, described torque application device as shown in Figure 1 and Figure 2, including Bottom backing plate 1, worm and gear lift 2, splined connection 3, torque sensor 4, moment of torsion apply transfer panel 5, bearing transfer panel 6th, seat supports device 7a, 7b, rotary angle transmitter connector 8, rotary angle transmitter 9 and rigid connection rod member 10.Described worm and gear The bottom of lift 2 adds pad, and is connected with bottom backing plate 1 by bolt;Install described seat supports device 7a, 7b bottoms On the top of bottom backing plate 1, the bottom of bottom backing plate 1 is arranged on experiment porch;Described worm and gear lift 2 is connected by spline Fitting 3 is connected with torque sensor 4, and the inner tubal wall of torque sensor 4 posts four foil gauges, and outside is provided with a joint by paint Envelope curve is connected with collecting device, measuring circuit is constituted, for the output of moment of torsion;Described torque sensor 4 by 6 bolts with Moment of torsion applies the connection of the side of transfer panel 5;
Described moment of torsion applies the opposite side center of transfer panel 5 vertical through hole, and the described side of bearing transfer panel 6 has One applies the corresponding vertically oriented aperture there-through of transfer panel 5 with moment of torsion, and the two is connected by passing perpendicularly through the stay bolt at center and fixing Connect;The described left and right sides of bearing transfer panel 6 is connected by bearing with two seat supports devices 7a, 7b respectively, bearing switching Can be relatively rotated by bearing between disk 6 and seat supports device 7a, 7b;The described middle part of bearing transfer panel 6 passes through 6 spiral shells Bolt is connected with rigid connection rod member 10, and the top of rigid connection rod member 10 is used for connecting various experimental configurations, the center of bearing transfer panel 6 with it is firm The screw hole of matching is arranged at the bottom of extension bar part 10;The opposite side of described bearing transfer panel 6 is by rotary angle transmitter connector 8 and turns Angle transducer 9 is connected.Post four foil gauges in described rotary angle transmitter 9, outside be provided with a joint by enamel-covered wire with Collecting device is connected, and measuring circuit is constituted, for the output of corner displacement.
When the torque application device to rod member apply moment of torsion when, described torque application device as shown in Figure 3, Figure 4, including Bottom backing plate 1, worm and gear lift 2, lift cushion block 14, splined connection 3, torque sensor 4, moment of torsion apply transfer panel 5th, rod member fixture 11, hinged-support 12, equal height cushion block 13, rotary angle transmitter connector 8, rotary angle transmitter 9 and rod member 15.Described The bottom of worm and gear lift 2 is arranged on the top of lift cushion block 14 by bolt, and the bottom of lift cushion block 14 is pacified by bolt Mounted in the top side of bottom backing plate 1;The described bottom of equal height cushion block 13 is arranged on the top opposite side of bottom backing plate 1 by bolt; The bottom of bottom backing plate 1 is arranged on experiment porch by bolt;Described worm and gear lift 2 by splined connection 3 with Torque sensor 4 is connected, and torque sensor inner tubal wall posts four foil gauges, and outside is provided with a joint and passes through enamel-covered wire and adopt Collection equipment is connected, and measuring circuit is constituted, for the output of moment of torsion.
Described torque sensor 4 applies the side of transfer panel 5 and is connected by 6 bolts and moment of torsion;Described moment of torsion applies There is a vertical through hole at the opposite side center of transfer panel 5, and the described side of rod member fixture 11 has one to apply transfer panel 5 pairs with moment of torsion The vertically oriented aperture there-through answered, the two is fixedly connected by passing perpendicularly through the stay bolt at center;Described rod member fixture 11 it is another Side is connected by rotary angle transmitter connector 8 with rotary angle transmitter 9, and there is the screw hole of matching at the middle part of rod member fixture 11;It is described The centre position of rod member fixture 11 fixed installation rod member 15, the middle part of described rod member fixture 11 has what is match with the size of rod member 15 to lead to Hole;The through hole being consistent with the outside dimension of rod member fixture 11 arranged at the described top of hinged-support 12, and rod member fixture 11 is by through hinged The through hole on 12 tops of seat, is connected with hinged-support 12, can be relatively rotated between rod member fixture 11 and hinged-support 12;Described is hinged Seat 12 is arranged on the top of equal height cushion block 13 by 6 bolts, and the described bottom of equal height cushion block 13 is arranged on bottom backing plate 1;Institute Four foil gauges are posted in the rotary angle transmitter 9 stated, outside is provided with a joint and is connected with collecting device by enamel-covered wire, composition Measuring circuit, for the output of corner displacement;The described two ends of rod member 15 are used for connecting various experiment rod members, constitute structure, enter Row experiment.
Embodiment 1 applies bearing corner displacement to statically indeterminate rigid frame structure
When worm and gear lift rotation hand wheel is rotated by hand mode, lift can drive splined connection, Torque sensor, moment of torsion apply transfer panel, bearing transfer panel, rotary angle transmitter connector, rotary angle transmitter and rotate together, this When, it is illustrated that structure has a bearing corner displacement at bottom support bracket, and the reading of rotary angle transmitter is corner displacement value, and moment of torsion is passed The reading of sensor is end reaction value.Fig. 8 is to apply bearing corner displacement schematic device to statically indeterminate rigid frame structure.
Embodiment 2 applies moment of torsion load to statically indeterminate beam structure
Fig. 9 is to apply moment of torsion load means schematic diagram to statically indeterminate beam structure, when rotating worm gear snail by hand mode During bar lift rotation hand wheel, lift can drive splined connection, torque sensor, moment of torsion to apply transfer panel, bearing and transfer Disk, rotary angle transmitter connector, rotary angle transmitter are rotated together, now, it is illustrated that structure can be subject to one at intermediate support position Individual concentration moment of torsion load, the reading of rotary angle transmitter is this corner displacement value, and the reading of torque sensor is concentration moment of torsion lotus Load value.

Claims (1)

1. it is a kind of for structural mechanics experiment torque application device, it is characterised in that the torque application device can be to bearing Or rod member applies moment of torsion;
When the torque application device applies moment of torsion to bearing, described torque application device includes bottom backing plate (1), worm gear snail Bar lift (2), splined connection (3), torque sensor (4), moment of torsion apply transfer panel (5), bearing transfer panel (6), bearing Support meanss (7a, 7b), rotary angle transmitter connector (8), rotary angle transmitter (9) and rigid connection rod member (10);Described worm gear snail Bar lift (2) bottom adds pad, and is fixedly connected with bottom backing plate (1);Described seat supports device (7a, 7b) bottom Installed in bottom backing plate (1) top, bottom backing plate (1) bottom is arranged on experiment porch;Described worm and gear lift (2) It is connected with torque sensor (4) by splined connection (3), torque sensor (4) inner tubal wall posts foil gauge, outside and collection Equipment is connected, and measuring circuit is constituted, for output torque;
Described torque sensor (4) is connected by applying transfer panel (5) side with moment of torsion;It is another that moment of torsion applies transfer panel (5) There is a vertical through hole at side center, and there is a vertical direction corresponding with moment of torsion applying transfer panel (5) bearing transfer panel (6) side Through hole, the two is fixedly connected by passing perpendicularly through the stay bolt at center;Described bearing transfer panel (6) left and right sides leads to respectively Cross bearing to be connected with two seat supports devices (7a, 7b), energy between bearing transfer panel (6) and seat supports device (7a, 7b) Enough relatively rotated by bearing;Described bearing transfer panel (6) middle part is connected with rigid connection rod member (10), rigid connection rod member (10) top For connecting various experimental configurations, bearing transfer panel (6) center has the screw hole for matching with rigid connection rod member (10) bottom;Institute The opposite side of the bearing transfer panel (6) stated is connected by rotary angle transmitter connector (8) with rotary angle transmitter (9);Described turns Foil gauge is posted in angle transducer (9), outside is connected with collecting device, measuring circuit is constituted, for output corner displacement;
When the torque application device applies moment of torsion to rod member, described torque application device includes bottom backing plate (1), worm gear snail Bar lift (2), lift cushion block (14), splined connection (3), torque sensor (4), moment of torsion apply transfer panel (5), rod member Fixture (11), hinged-support (12), equal height cushion block (13), rotary angle transmitter connector (8), rotary angle transmitter (9) and rod member (15); Described worm and gear lift (2) bottom is arranged on lift cushion block (14) top, lift cushion block (14) and equal height cushion block (13) installed in bottom backing plate (1) top both sides;Bottom backing plate (1) bottom is arranged on experiment porch;Described worm and gear Lift (2) is connected by splined connection (3) with torque sensor (4), and torque sensor inner tubal wall posts foil gauge, outside It is connected with collecting device, for output torque;
Described torque sensor (4) is connected by applying transfer panel (5) side with moment of torsion, and it is another that moment of torsion applies transfer panel (5) There is a vertical through hole at side center, and there is a vertical direction corresponding with moment of torsion applying transfer panel (5) rod member fixture (11) side Through hole, the two is fixedly connected by passing perpendicularly through the stay bolt at center;The opposite side of described rod member fixture (11) is by turning Angle transducer connector (8) is connected with rotary angle transmitter (9), and there is the screw hole of matching at rod member fixture (11) middle part;Described bar Part fixture (11) centre position fixedly mounts rod member (15), has in the middle part of described rod member fixture (11) and is matched with rod member (15) size Through hole;The through hole being consistent with rod member fixture (11) outside dimension is arranged at described hinged-support (12) top, and rod member fixture (11) leads to The through hole through hinged-support (12) top is crossed, is connected with hinged-support (12), can between rod member fixture (11) and hinged-support (12) Relatively rotate;Described hinged-support (12) is installed in equal height cushion block (13) top;Strain is posted in described rotary angle transmitter (9) Piece, outside is connected with collecting device, for the output of corner displacement;Described rod member (15) two ends are used for connecting various test clubs Part, is tested.
CN201621077222.4U 2016-09-23 2016-09-23 A device is applyed to moment of torsion for structural mechanics experiment Withdrawn - After Issue CN206194218U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621077222.4U CN206194218U (en) 2016-09-23 2016-09-23 A device is applyed to moment of torsion for structural mechanics experiment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621077222.4U CN206194218U (en) 2016-09-23 2016-09-23 A device is applyed to moment of torsion for structural mechanics experiment

Publications (1)

Publication Number Publication Date
CN206194218U true CN206194218U (en) 2017-05-24

Family

ID=58731233

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621077222.4U Withdrawn - After Issue CN206194218U (en) 2016-09-23 2016-09-23 A device is applyed to moment of torsion for structural mechanics experiment

Country Status (1)

Country Link
CN (1) CN206194218U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106205302A (en) * 2016-09-23 2016-12-07 大连理工大学 A kind of torque application device for structural mechanics experiment
CN109637298A (en) * 2019-01-11 2019-04-16 崔洋 Rotational stiffness visualization device for Teaching of Structural Mechanics

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106205302A (en) * 2016-09-23 2016-12-07 大连理工大学 A kind of torque application device for structural mechanics experiment
CN106205302B (en) * 2016-09-23 2018-07-24 大连理工大学 A kind of torque application device for structural mechanics experiment
CN109637298A (en) * 2019-01-11 2019-04-16 崔洋 Rotational stiffness visualization device for Teaching of Structural Mechanics

Similar Documents

Publication Publication Date Title
CN201583444U (en) Electronic universal tester
CN206194218U (en) A device is applyed to moment of torsion for structural mechanics experiment
CN102982709B (en) Statics experiment device for ship model
CN106959180B (en) Digital display torsion testing machine for teaching
CN103217342A (en) Micro-torsion testing platform
CN102279077B (en) Calibration device for double-force-source six-dimensional force sensor
CN106205302B (en) A kind of torque application device for structural mechanics experiment
CN201464302U (en) Torsion experiment device
CN105699203A (en) Test device and method for measuring compressive strength of building materials under ambient pressure
CN203224408U (en) Micro-torsion testing platform
CN203745316U (en) Torsion stiffness detection device for right-angled fastener
CN210626174U (en) Small-sized multifunctional material mechanics testing machine
CN206019923U (en) Experimental provision spent surely by a kind of torque sensor
CN106504623A (en) A kind of physics teaching student uses pressure demonstrator
CN206683941U (en) A kind of simulation thin film material plane and the experimental rig of quadric stress relexation
CN206627375U (en) Pipeline rigidity automatic testing equipment
CN103680285B (en) Multi-functional pincers worker technique training platform
CN202216801U (en) Double-force-source calibration device for six-dimensional force sensor
CN204807401U (en) Wall body plane extra income tie load force transmission frame device that evenly loads
CN219590081U (en) Pressure pipeline pressure-resistant inspection device
CN206210206U (en) For the instructional device of structural mechanics experiment
CN204374012U (en) A kind of drop impact tension test truss conversion equipment realizing elimination inertia force influence
CN203848824U (en) Mounting adjusting mechanism for tilt angle sensor of transmission tower
CN206300850U (en) A kind of telescopic shear box three dimension stress direct shear apparatus of ring
CN205506574U (en) Measure building material compressive strength's under confined pressure test device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
AV01 Patent right actively abandoned
AV01 Patent right actively abandoned

Granted publication date: 20170524

Effective date of abandoning: 20180724