CN105401560B - Auto-exit gate locking device and gate control system - Google Patents
Auto-exit gate locking device and gate control system Download PDFInfo
- Publication number
- CN105401560B CN105401560B CN201510889348.5A CN201510889348A CN105401560B CN 105401560 B CN105401560 B CN 105401560B CN 201510889348 A CN201510889348 A CN 201510889348A CN 105401560 B CN105401560 B CN 105401560B
- Authority
- CN
- China
- Prior art keywords
- gate
- lock
- locking
- transmission shaft
- locking device
- 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.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 40
- 102100023170 Nuclear receptor subfamily 1 group D member 1 Human genes 0.000 description 20
- 230000005484 gravity Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 101100460844 Mus musculus Nr2f6 gene Proteins 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/26—Vertical-lift gates
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Gates (AREA)
- Barrages (AREA)
Abstract
The invention discloses an auto-exit gate locking device which comprises locking lugs, locking shafts, locking connecting rods, a transmission shaft, supporting seats, transmission connecting rods and a balance weight, wherein one end of each locking lug is fixed on a gate lock beam, and the other end of each locking lug is rotationally connected with each locking shaft; the locking shafts are fixedly connected with the transmission shaft through the locking connecting rods; bearings which are in fit connection with the transmission shaft are arranged on the supporting seats; the transmission shaft is fixed on a concrete foundation through the supporting seats; the balance weight is fixedly connected with the transmission shaft through the transmission connecting rods; and the balance weight and the locking lugs are located at two sides of the transmission shaft respectively. The invention further discloses a gate control system. According to the auto-exit gate locking device and the gate control system, on the basis that an existing device is not affected, the automatic exit of the gate lock beam can be achieved safely and reliably through the lever principle and the locking lugs rotationally connected with the bearings.
Description
Technical field
The present invention relates to the locking device of large hydropower station or hydroenergy storage station self-action gate, particularly relates to one kind certainly
The dynamic gate locking device for exiting and sluice control system.
Background technology
The demand for being designed with remote emergency landing of large hydropower station or hydroenergy storage station intake-outlet gate, it is desirable to
In emergency circumstances, after pressing forced landing strobe button, gate can complete forced landing.Therefore, realize gate lock beam
Automatically exit from function most important for power station.At present, gate lock beam is generally divided into automatic switching and throws manually and moves back.By
Moved back using throwing manually in current majority power station intake-outlet gate, on the one hand, in order to realize the function of distant place forced landing, it is most
Power station selects not input strobe locking beam, so that gate only hangs on gate on gate shaft by the band-type brake of brake
, there is the risk that brake malfunction causes gate to fall in side.On the other hand, the gate locking device for moving back is thrown manually even if adopting,
After pressing forced landing button in the distance, locking quickly cannot be exited so that the forced landing disabler of gate, still exist
Larger potential safety hazard.For automatic switching, thrown with hydraulic pressure more and moved back or based on motor throws and move back, the side of moving back is thrown in the locking of this kind of form
Just, automaticity is higher, can be good at meeting the distant place automatic emergency landing of intake-outlet gate, but, due to simultaneously
Control system to be increased and operating system, so thing followed cost of investment is higher, later maintenance amount increases.And due to lock
The environment of door well mostly is humidity, and the control system for frequently resulting in automatic switching device breaks down, and person directly affects gate certainly
The reliability of dynamic landing function.
In recent years, the gate lock beam in part power station employed cantilever beam structure, by two side lock center of gravity of power transmission shaft
And the reasonable distribution of the arm of force realizes automatically exiting from for locking, the excellent of conventional automatic locking and manual locking has been drawn in this locking
Point, you can realize automatic switching；But due to cantilever beam structure to power transmission shaft basis making a concerted effort to propose higher requirement, must
Overall planning must be carried out in gate and gate shaft initial designs.And for the hydroenergy storage station of those built operations is come
Say, if wanting to be transformed into this purely mechanic automatic locking, the concrete on gate shaft side must be excavated, and be matched somebody with somebody again
Then base is fixed by muscle cement injection with reinforcing bar, and quantities is big, is not suitable for transforming existing equipment.
The content of the invention
In view of this, it is an object of the invention to propose a kind of gate locking device for automatically exiting from and gate control system
System, can safely and reliably realize automatically exiting from for gate lock beam.
Based on the gate locking device for automatically exiting from that the above-mentioned purpose present invention is provided, it is characterised in that include：Locking
Ear, lock shaft, lock link, power transmission shaft, support base, kinematic link and counter weight；One end of the latch ear is fixed on gate
On locking beam, the other end is rotated with the lock shaft and is connected；The lock shaft is solid with the power transmission shaft by the lock link
It is fixed to connect；With the bearing being connected with the power transmission shaft on the support base, the power transmission shaft is solid by the support base
It is scheduled in concrete foundation；The counter weight is fixedly connected with the power transmission shaft by the kinematic link, and the counter weight
With the latch ear respectively positioned at the both sides of the power transmission shaft.
Preferably, the latch ear is 4, and the length direction along gate lock beam is symmetrical arranged, each two latch ear
Correspondence is connected to a lock shaft.
Preferably, the latch ear is coordinated for gap with the lock shaft, and gap is 2mm.
Preferably, the latch ear is located at gate lock beam upper surface along perpendicular to upper with the position that gate lock beam is fixed
At end face direction downward 1/3.
Preferably, the lock link and the kinematic link are into hexagonal angle.
Preferably, the bearing bore diameter 0.5mm-1mm bigger than the diameter of the power transmission shaft on the support base；Bearing (ball) cover it
Between gap ratio described in bearing the big 3mm-5mm of thickness.
Preferably, the gate locking device for automatically exiting from also includes gag lever post, and the gag lever post is fixed on described
It is correspondingly arranged on support seat and with the position of the kinematic link；The height of the gag lever post is contacted with ground more than the counter weight
The height of Shi Suoshu kinematic links.
Further, the height of the gag lever post according to the falling head and the latch ear of the counter weight and gate away from
From setting.
Preferably, the computing formula of the counter weight weight is：GWeight=GLocking×LLocking/LWeight, wherein, GWeightFor counter weight
Quality, GLockingFor the quality of gate lock beam, LLockingFor the length of lock link, LWeightFor the length of kinematic link.
Present invention also offers a kind of sluice control system, including：The gate locking device for automatically exiting from.
From the above it can be seen that the gate locking device for automatically exiting from and sluice control system of present invention offer are logical
The latch ear crossed lever principle and be connected with bearing rotation, on the basis of original device, equipment is not affected, safely can may be used
Automatically exiting from for gate lock beam is realized by ground.
Description of the drawings
The side view of the embodiment of the gate locking device for automatically exiting from that Fig. 1 is provided for the present invention；
The top view of the embodiment of the gate locking device for automatically exiting from that Fig. 2 is provided for the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.
It should be noted that the statement of all uses " first " and " second " is for differentiation two in the embodiment of the present invention
The parameter of the entity or non-equal of individual same names non-equal, it is seen that the convenience of " first " " second " only for statement, should not
The restriction to the embodiment of the present invention is interpreted as, subsequent embodiment is no longer illustrated one by one to this.
Shown in seeing figures.1.and.2, the side of the embodiment of the gate locking device for automatically exiting from for providing respectively of the invention
View and top view.The gate locking device for automatically exiting from includes：Latch ear 1, lock shaft 2, lock link 3, power transmission shaft
4th, support base 5, kinematic link 6 and counter weight 7；One end of the latch ear 1 is fixed on gate lock beam 8, the other end and institute
State lock shaft 2 and rotate connection；The lock shaft 2 is fixedly connected with the power transmission shaft 4 by the lock link 3；The support
Coagulation soil matrix is fixed on by the support base 5 with the bearing being connected with the power transmission shaft 4, the power transmission shaft 4 on seat 5
On plinth；The counter weight 7 is fixedly connected with the power transmission shaft 4 by the kinematic link 6, and the counter weight 7 and the lock
Ear 2 is determined respectively positioned at the both sides of the power transmission shaft 4.
Wherein gate lock beam 8 is conventional i-beam structure, and the gate lock beam 8 passes through mid portion input strobe
In the gate slot on top, two ends traverse is placed in the both sides of gate shaft so that gate is locked by the gate lock beam 8,
Down will not drop.One end of the latch ear 1 is typically welded on the gate lock beam 8, and the other end has through hole, is used for
It is connected with the lock shaft 2；The lock shaft 2 can be connected with the latch ear 1 respectively with two ends, then mid portion with it is described
Lock link 3 connects, it is also possible to which mid portion is connected with the latch ear 1, and then two end portions are connected with the lock link 3
Connect.The lock link 3 is fixedly connected with the lock shaft 2 and the power transmission shaft 4 respectively, is preferably welded.The power transmission shaft 4
Two ends be connected with the support base 5 by bearing respectively, bearing described further is preferably rolling bearing, and bearing two ends have
Bearing cap；The power transmission shaft 4 can be freely rotated relative to the support base 5.In the opposite side of the power transmission shaft 4, the counterweight
Hammer 7 is fixedly connected with the power transmission shaft 4 by kinematic link 6, is preferably welded；The counter weight 7 can have any shape, and use
In the certain gravity of offer.By the both sides that the counter weight 7 and the latch ear 1 are arranged at the power transmission shaft 4, work as locking
When not having other external force effects or sufficiently small external force, locking can be lifted automatically by the counter weight 7 by leverage
Come, namely cause gate lock beam 8 to automatically disengage lock-out state.Specifically, when forced landing is remotely needed, gate is first upwards
Lifted, then declined, during gate is lifted, due to action of gravity and the thick stick of the power transmission shaft 4 of the counter weight 7
Bar is acted on, and the counter weight 7 is gradually reduced, and the latch ear 1 and gate lock beam 8 are gradually increasing, until depart from gate slot,
Namely realize automatically exiting from for gate lock beam 8.Conversely, when needing to put into locking again, needing to lift institute by manpower
State counter weight 7 so that in 8 input strobe groove of gate lock beam.
From above-described embodiment, the gate locking device for automatically exiting from can be with by the leverage of counter weight 7
Automatically exiting from for gate lock beam 8 is realized safely and reliably.And, the latch ear 1 is with the power transmission shaft 4 by the locking
Axle 2 connects, namely the latch ear 1 arbitrarily can be rotated with the action of gravity of gate lock beam 8.So so that gate lock
Beam 8 is easier to exit from gate slot, namely improves the work efficiency of the gate locking device for automatically exiting from and stablize
Property.
Preferably, the counter weight 7 is column structure.So, it is not only convenient for lifting operation, and increased total
Stability.
In some optional embodiments, see figures.1.and.2 shown, 5 points of the support base is base plate 51 and riser 52；
The riser 52 is vertically welded on the base plate 51；The base plate 51 is fixedly connected with concrete by uniform through hole 511；
The rotary shaft 4 is connected by bearing with the riser 52.
In some optional embodiments, the latch ear 1 is 4, and the length direction along gate lock beam 8 symmetrically sets
Put, the correspondence of each two latch ear 1 is connected to a lock shaft 2.Thus, the gate locking device for automatically exiting from has two
2, two lock links 3 of lock shaft.So, latch ear 1 is set by two positional symmetries in gate lock beam 8 so that lock
Door locks being more uniformly stressed for beam 8, namely the reliability that improve the gate locking device for automatically exiting from.And per two
Correspondence one lock shaft 2 of connection of individual latch ear 1, the connection for enabling to the latch ear 1 with the lock shaft 2 more stably may be used
Lean on.
In some optional embodiments, the latch ear 1 is coordinated for gap with the lock shaft 2, and gap is 2mm.This
Sample, both ensure that the latch ear 1 can be freely rotated relative to the lock shaft 2, while and will not produce larger vibrations.
In some optional embodiments, the latch ear 1 is located at gate lock beam with the position that gate lock beam 8 is fixed
8 upper surfaces are along at upper surface direction downward 1/3.In this position, the latch ear 1 when gate lock beam 8 is exited,
So that gate lock beam 8 is with gate distance preferably, namely the gate lock beam 8 after causing to exit is without interference with the lifting fortune of gate
It is dynamic, improve the reliability of the gate locking device for automatically exiting from.
In some optional embodiments, 6 one-tenth hexagonal angles of the lock link 3 and the kinematic link.So so that institute
State counter weight 7 and preferably lever construction is formed with the latch ear 1, can also improve the speed that the gate lock beam 8 is exited
And accuracy rate.
In some optional embodiments, the bearing bore diameter on the support base 5 is bigger than the diameter of the power transmission shaft 2
0.5mm-1mm；The big 3mm-5mm of the thickness of bearing described in gap ratio between bearing (ball) cover.So, the biography not only can be compensated
The welding deformation of moving axis 4, and and can guarantee that the power transmission shaft 4 can be freely rotated relative to bearing.
In some optional embodiments, the gate lock for automatically exiting from also includes gag lever post (not shown),
The gag lever post is fixed on the support base 5 and is correspondingly arranged with the position of the kinematic link 6；The height of the gag lever post
The height of the kinematic link 6 when contacting with ground more than the counter weight 7.Thus it is possible, on the one hand, the gag lever post can be avoided
Gate lock beam 8 lift it is too high, on the other hand, can avoid again the counter weight 7 repeatedly with collision on the ground, cause ground to damage
It is bad.
In some optional embodiments, the height of the gag lever post is according to the falling head of the counter weight 7 and described
Latch ear 1 is arranged with the distance of gate.So, can limit the falling head of the counter weight 7, and and can ensure that and exit
When, gate lock beam 8 has certain spacing with gate so that gate lock beam 8 does not interfere with the lifting of gate.
In some optional embodiments, the computing formula of the weight of the counter weight 7 is：GWeight=GLocking×LLocking/LWeight,
Wherein, GWeightFor the quality of the counter weight 7, GLockingFor the quality of gate lock beam 8, LLockingFor the length of the lock link 3,
LWeightFor the length of the kinematic link 6.
In some optional embodiments, due to during the exiting of gate lock beam 8, the torque of gate lock beam 8 by
It is decrescence little, and the torque of the counter weight 7 gradually increases, therefore, the actual weight of the counter weight 7 can be appropriate less than upper
The value of calculation of computing formula is stated, but have to be larger than marginal value when gate lock beam 8 can be automatically exited from, its marginal value should be according to lock
Arm of force situation when door can just be automatically exited from is determined.
The control loop of the sluice control system is specifically improved to：Set up on former aperture instrument limit switch amount node with
Newly-increased first relay series connection, forms limit superior loop, to realize that the operation that gate is fallen after rising provides turning point；In former loop
The middle time-delay relay that increases is connected with the auxiliary node of newly-increased first relay, forms limit superior time delay Luo Men loops so that lock
Door switchs to landing automatically after time delay certain hour after rising to limit superior；A loop switch signal promptly fallen from former series loop
Middle releasing simultaneously connects to form urgent Luo Men loops with newly-increased second relay.When press promptly fall button after, gate opening is returned
Road turns on, and when gate rises to limit superior, increases the first relay power newly, and its auxiliary node is closed, and time-delay relay starts meter
When, after time delay certain hour, the loop conducting of closing gate, gate are landed automatically.
Preferably, newly-increased first relay is KM31, and it is KM32 to increase the second relay newly, and time-delay relay is KT7.
Preferably, the delay time is set to 10s.
Those of ordinary skill in the art should be understood：The discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Under the thinking of the present invention, above example
Or can also be combined between the technical characteristic in different embodiments, step can be realized with random order, and is existed such as
Many other changes of the different aspect of the upper described present invention, for simple and clear their no offers in details.Therefore, it is all
Within the spirit and principles in the present invention, any omission for being made, modification, equivalent, improvement etc. should be included in the present invention's
Within protection domain.
Claims (8)
1. a kind of gate locking device for automatically exiting from, it is characterised in that include：Latch ear, lock shaft, lock link, transmission
Axle, support base, kinematic link and counter weight；One end of the latch ear is fixed on gate lock beam, the other end and the lock
Fixed-axis rotation connects；The lock shaft is fixedly connected with the power transmission shaft by the lock link；Have on the support base
The bearing being connected with the power transmission shaft, the power transmission shaft are fixed in concrete foundation by the support base；It is described to match somebody with somebody
Weight is fixedly connected with the power transmission shaft by the kinematic link, and the counter weight and the latch ear be located at respectively it is described
The both sides of power transmission shaft；
The position that the latch ear and gate lock beam are fixed be located at gate lock beam upper surface along perpendicular to upper surface direction to
At lower 1/3；
Also include gag lever post, the gag lever post is fixed on the support base and is correspondingly arranged with the position of the kinematic link；
The height of the kinematic link when height of the gag lever post is contacted with ground more than the counter weight.
2. the gate locking device for automatically exiting from according to claim 1, it is characterised in that the latch ear is 4, and
Length direction along gate lock beam is symmetrical arranged, and each two latch ear correspondence is connected to a lock shaft.
3. the gate locking device for automatically exiting from according to claim 1, it is characterised in that the latch ear and the lock
Dead axle coordinates for gap, and gap is 2mm.
4. the gate locking device for automatically exiting from according to claim 1, it is characterised in that the lock link and described
Kinematic link is into hexagonal angle.
5. the gate locking device for automatically exiting from according to claim 1, it is characterised in that the bearing on the support base
Internal diameter 0.5mm-1mm bigger than the diameter of the power transmission shaft；The big 3mm- of the thickness of bearing described in gap ratio between bearing (ball) cover
5mm。
6. the gate locking device for automatically exiting from according to claim 1, it is characterised in that the height root of the gag lever post
Arrange with the distance of gate according to the falling head and the latch ear of the counter weight.
7. the gate locking device for automatically exiting from according to claim 1, it is characterised in that the meter of the counter weight weight
Calculating formula is：GWeight=GLocking×LLocking/LWeight, wherein, GWeightFor the quality of counter weight, GLockingFor the quality of gate lock beam, LLockingFor
The length of lock link, LWeightFor the length of kinematic link.
8. a kind of sluice control system, it is characterised in that include：The lock for automatically exiting from described in claim 1-7 any one
Door locking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510889348.5A CN105401560B (en) | 2015-12-07 | 2015-12-07 | Auto-exit gate locking device and gate control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510889348.5A CN105401560B (en) | 2015-12-07 | 2015-12-07 | Auto-exit gate locking device and gate control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105401560A CN105401560A (en) | 2016-03-16 |
| CN105401560B true CN105401560B (en) | 2017-05-03 |
Family
ID=55467292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510889348.5A Active CN105401560B (en) | 2015-12-07 | 2015-12-07 | Auto-exit gate locking device and gate control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105401560B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412320A (en) * | 2018-05-11 | 2018-08-17 | 中设设计集团股份有限公司 | A kind of electric-controlled gate door lock system |
| CN115404828B (en) * | 2022-08-15 | 2023-07-18 | 中国长江电力股份有限公司 | Method for lifting and falling of layered water taking ecological dispatching stoplog door of hydropower station |
| CN115305881B (en) * | 2022-09-21 | 2023-07-14 | 中国长江电力股份有限公司 | Automatic switching device and method for counterweight lever type gate locking beam |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101126909B1 (en) * | 2009-09-17 | 2012-03-19 | 주식회사 우승산업 | Wire rope type water gate with water gate locking part |
| CN103806414A (en) * | 2012-11-15 | 2014-05-21 | 长江勘测规划设计研究有限责任公司 | Gate automatic locking device |
| CN104088257A (en) * | 2014-06-24 | 2014-10-08 | 国家电网公司 | Gate auto-locking device |
| CN204059309U (en) * | 2014-08-26 | 2014-12-31 | 陈文珠 | Steel dam connecting lever locking mechanism |
| CN205276223U (en) * | 2015-12-07 | 2016-06-01 | 国家电网公司 | Automatic floodgate door locking device and floodgate door control system that withdraw from |
-
2015
- 2015-12-07 CN CN201510889348.5A patent/CN105401560B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105401560A (en) | 2016-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105401560B (en) | Auto-exit gate locking device and gate control system | |
| CN105092222A (en) | Loading apparatus for bearing strength test of girder integral body stability | |
| CN209760004U (en) | multidirectional bridge-falling-preventing limiting device | |
| CN207296354U (en) | A kind of dual fail-safe type attached type lifting scaffold inclining anti-fall device | |
| DE202016100544U1 (en) | weighing device | |
| CN204728590U (en) | The prefabricated cantilever stair of a kind of two-part | |
| CN110158471A (en) | Hoisting method for high-altitude relay of large-span arc-shaped steel box girder | |
| EP2577240B1 (en) | Apparatus for weighing | |
| EP1577550A2 (en) | Method for provisioning a winch on a wind energy plant and device for carrying out this method | |
| CN100417586C (en) | Integral lifting method of large bridge crane and its appts | |
| DE102016007723A1 (en) | Load weighing on the load hook | |
| CN205276223U (en) | Automatic floodgate door locking device and floodgate door control system that withdraw from | |
| WO2020104282A1 (en) | Crane and method for monitoring the operation of such a crane | |
| DE2103667A1 (en) | Lifting crane | |
| CN201334770Y (en) | Wall-attached supporting seat | |
| CN206886541U (en) | Anti-falling safety device for construction lift fixed point detection resets equipment | |
| CN205709590U (en) | pin shaft mounting structure | |
| CN204128808U (en) | A kind of rolling stock bottom operation coupler composition test unit | |
| CN104863259B (en) | Upside-down construction method for large-span ultra-high signal-layer cylindrical architectural steel structure | |
| CN109186919B (en) | Test device for impact ignition composite test of solid rocket engine | |
| CN111483921B (en) | Load test device and test method for hoisting equipment with quasi-diamond structure | |
| CN205157344U (en) | Rock burst experimental apparatus based on simulation of similar material | |
| DE102016101917A1 (en) | weighing device | |
| CN101797925B (en) | Device for locking movable vehicle roof | |
| CN202022673U (en) | Integral hoisting device of trestle truss |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |