CN208796784U - Core of reactor compressing structure and pressing device - Google Patents

Core of reactor compressing structure and pressing device Download PDF

Info

Publication number
CN208796784U
CN208796784U CN201820856302.2U CN201820856302U CN208796784U CN 208796784 U CN208796784 U CN 208796784U CN 201820856302 U CN201820856302 U CN 201820856302U CN 208796784 U CN208796784 U CN 208796784U
Authority
CN
China
Prior art keywords
iron core
joist
electric reactor
compressing structure
bolt
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
Application number
CN201820856302.2U
Other languages
Chinese (zh)
Inventor
符建牛
刘尚宝
查银芳
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.)
SANBIAN SCI-TECH Co Ltd
Original Assignee
SANBIAN SCI-TECH Co Ltd
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 SANBIAN SCI-TECH Co Ltd filed Critical SANBIAN SCI-TECH Co Ltd
Priority to CN201820856302.2U priority Critical patent/CN208796784U/en
Application granted granted Critical
Publication of CN208796784U publication Critical patent/CN208796784U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Springs (AREA)

Abstract

The utility model relates to iron core of electric reactor compressing structure and pressing devices, iron core of electric reactor compressing structure, including iron core and it is respectively arranged on the iron core of iron core upper and lower side joist and at least one under joist and iron core and passes through the stem of joist on joist, iron core and iron core under iron core and draw screw rod;Joist, which is equipped with, on the iron core draws screw sleeve;The stem draws the both ends of screw rod to be fastened respectively by drawing bolt and nut;The outer ring for drawing screw sleeve is arranged with butterfly spring group, and the top of butterfly spring group is equipped with pressurization swivel nut.Iron core of electric reactor pressing device, including iron core of electric reactor compressing structure, wherein drawing screw sleeve to be spirally connected connects swivel nut, lower end is bolted in the compression bolt of connection swivel nut, and is sequentially sheathed on the clamp sleeve and hollow hydraulic cylinder of compression bolt;Described compress is locked with bolt upper end by locking nut.The utility model has handling easy, and pressure is accurate, compresses the advantages such as high-efficient, effect is good, convenient for safeguarding, wide adaptation range, and security risk is low.

Description

Core of reactor compressing structure and pressing device
Technical field
The utility model relates to core of reactor compaction techniques fields, and in particular to a kind of core of reactor compressing structure and Core of reactor pressing device for compressing the structure.
Background technique
The vibration and noise that reactor generates in use is the important indicator of evaluation reactor key performance, and An important factor for reactor is run steadily in the long term is influenced, therefore, it is necessary to effectively be compressed to reactor.
Referring to Fig. 1, currently, the reactor product with discus that each transformer manufacturers are 66kV or more for voltage class Frequently with cross beam type compressing structure, the cross beam type compressing structure includes joist 6a and the lower two sides joist 8a on reactor Draw screw rod 7a, draw the lower end screw rod 7a be arranged with chock, by be set to draw the end screw rod 7a nut 1a position, draw the top screw rod 7a according to Sequence is arranged chock 5a, channel steel 4a, hydraulic cylinder 3a, crossbeam 2a, and upper end is locked by nut 1a, which applies on reactor but It has the following problems:
(1) this body length of crossbeam length is longer, and there are certain amount of deflection, the core pressing power of three core limbs is relatively inaccessible to one It causes;
(2) components needed for cross beam type compressing structure compression tooling are more, and volume is big, weight weight, assemble complex, pressure The tight required time is long, and using integral face force way, it is poor to compress effect;
(3) cross beam type compressing structure compression tooling versatility is poor, requires to reactor capacity, for single-phase or great Rong Amount reactor must increase and decrease crossbeam length and pressed parts;
(4) cross beam type compressing structure compression tooling is in During Process of Long-term Operation, and iron-cored cake is because be not achieved authorized pressure Value or excessively compression can cause the increase of operational shock amplitude, increase so as to cause noise or fastener loosens, lose fastening and imitate Fruit, there are security risks for reactor operation.
Utility model content
To overcome the above-mentioned deficiency in the presence of the prior art, the utility model provides a kind of reactor device iron core compression Structure.Core of reactor compressing structure pressure control is accurate, it is ensured that each iron core column pressing force is consistent;Required components are few, Weight is small, and compression is high-efficient, and compression effect is good, dramatically saves manpower and material resources;Wide adaptation range, it is versatile;Locking effect Fruit is good, compresses force value and stablizes, can reduce the noise generated in reactor operational process, reduces the existing safety of reactor operation Hidden danger.Corresponding, the utility model is additionally provided for electricity matched with the reactor device iron core compressing structure of the utility model Anti- device core pressing device, the pressing device are easily installed and dismantle and adjust pressing force, can compress the reactor iron one by one Heart compressing structure, it is versatile, it is at low cost.
Technical solutions of the utility model: for compressing structure, the iron core of electric reactor compressing structure of the utility model, including Iron core and be respectively arranged on the iron core of iron core upper and lower side joist and at least one under joist and iron core pass through joist under iron core, The stem of joist draws screw rod on iron core and iron core;Joist, which is equipped with, on the iron core draws screw sleeve, and the stem draws screw rod Upper end is stretched out from the correspondence hole location drawn on screw sleeve;The stem draws the both ends of screw rod to be fastened respectively by drawing bolt and nut;Institute It states and the outer ring of screw sleeve is drawn to be arranged with butterfly spring group, the top of butterfly spring group is equipped with the pressurization being spirally connected with drawing screw sleeve Swivel nut.
Compared with prior art, the core of reactor compressing structure of the utility model has following progress:
(1) there is specific construction, can accurately adjust pressing force, guarantee that three iron core column pressing forces are consistent;
(2) for opposite cross beam type compressing structure, required components are few, and weight is small, and compression is high-efficient, and compression effect is good, Dramatically save manpower and material resources;
(3) versatile, reactor capacity is not required, it need not increase and decrease product department for single-phase or high-capacity reactor Divide element size;
(4) anti-loosing effect is good, compresses force value and stablizes, can reduce the noise generated in reactor operational process, reduce electricity Anti- device runs existing security risk.
As optimization, iron core of electric reactor compressing structure above-mentioned, the pressurization swivel nut be equipped with poke hole, just with adjustment institute It states pressurization swivel nut and draws the relative position of screw sleeve;Further, be uniformly distributed circumferentially on the outside of the pressurization swivel nut four it is blind Poroid poke hole can meet the angle demand of adjustment pressurization swivel nut.
As optimization, iron core of electric reactor compressing structure above-mentioned, the stem draws screw rod to have five altogether, wherein center Equipped with one, remaining four are circumferentially uniformly distributed along center.Disperse the stem and draws joist junction under screw rod and iron core Suffered pulling force reduces each stem and draws pulling force suffered by screw rod, optimizes stress condition.
As optimization, iron core of electric reactor compressing structure above-mentioned, the butterfly spring group is made of six butterfly springs, and two One group of piece, placement direction is opposite between two adjacent groups.Disk spring can provide enough pressing forces, and group by smaller deformation Closing the disk spring used also has good buffering damping capaicty, can preferably absorb impact and dissipation energy.
As optimization, iron core of electric reactor compressing structure above-mentioned, the stem draws screw rod and the spiral shell for drawing bolt and nut It meets place and is equipped with locking glue-line, be equipped with clamping washer between joist and the drawing screw sleeve, butterfly spring group on the iron core.It is anti- Loose glue-line can prevent use process newel from screw rod being drawn to loosen because of vibration or stress;Butterfly spring is applied to it by clamping washer Line style power joist on iron core is uniformly applied to by clamping washer lower end surface, damage when can also prevent butterfly spring compressive deformation Joist surface on iron core.
For pressing device, the iron core of electric reactor pressing device of the utility model, it is characterised in that: including reactor iron Heart compressing structure, drawing screw sleeve therein, which is spirally connected, connects swivel nut, and lower end is bolted in the compression bolt of connection swivel nut, Yi Jiyi Sequence is sheathed on the clamp sleeve and hollow hydraulic cylinder of the compression bolt;Described compress is locked with bolt upper end by locking nut Tightly;The clamp sleeve is equipped with action pane.
The reactor pressing device of the utility model has the advantages that
(1) it is easily installed and dismantles, the iron core of electric reactor compressing structure can be compressed one by one, compared to traditional pressing device For each compression point requires hydraulic cylinder, outsourcing piece cost has been saved;
(2) versatile, for different drawing screw sleeve sizes, corresponding connection swivel nut is only needed to change, is not necessarily to Whole device is replaced, processing cost has been saved;
(3) it is conveniently adjusted pressing force, clamp sleeve is equipped with action pane, convenient for stirring adjustment of the stick to pressurization swivel nut.
As optimization, iron core of electric reactor pressing device above-mentioned, the clamp sleeve is held by tubular type barrel and collar plate shape Pressing plate is welded;The collar plate shape bearing plate is sheathed on the compression bolt;Barrel lower section two sides are respectively provided with one and are in The action pane of long lumbar hole shape.Long lumbar hole shape action pane can expand the angular range of poke rod adjustment pressurization swivel nut.
As optimization, iron core of electric reactor pressing device above-mentioned, the hollow hydraulic cylinder is 95 tons of hollow hydraulic cylinders, can Enough pressing forces are provided.
As optimization, iron core of electric reactor pressing device above-mentioned is set between compression bolt and the locking nut There is the double-deck washer, be conveniently adjusted gap between connector, while playing the role of preventing connection from loosening.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the cross beam type compressing structure mentioned in background technique;
Fig. 2 is the side view for the cross beam type compressing structure mentioned in background technique;
Fig. 3 is the structural schematic diagram of the core of reactor compressing structure of the utility model;
Fig. 4 is the structural schematic diagram of the core of reactor pressing device of the utility model;
Fig. 5 is that the structure for stirring stick for stirring the pressurization swivel nut of the core of reactor compressing structure of the utility model is shown It is intended to;
Fig. 6 is the structural schematic diagram of the core of reactor pressing device clamp sleeve of the utility model;
Fig. 7-16 is the installation of the core of reactor compressing structure and core of reactor pressing device of the utility model respectively The status diagram of process 1-10.
Appended drawing reference: joist on 1- iron core;2- washer;3- stem draws screw rod;4- butterfly spring;5- draws screw sleeve, 51- cylindrical hole lower plane;6- is pressurized swivel nut, 61- poke hole;7- bolt and nut;8- connection swivel nut;9- clamp sleeve, 91- Wall, 92- bearing plate, 911- action pane;10- compression uses bolt;11-95 tons of hollow hydraulic cylinders;12- lock washer;13- locking Nut;14- iron core;Joist under 15- iron core;16- stirs stick.
Specific embodiment
(embodiment) is further described the utility model with reference to the accompanying drawings and detailed description, this place is retouched The specific embodiment stated is only used to explain the utility model, but is not intended as the foundation limited the utility model.
Referring to Fig. 3, the core of reactor compressing structure of the utility model, including iron core 14 and it is respectively arranged on about 14 iron core Joist 15 and at least one pass through under iron core joist on joist 15, iron core 14 and iron core under joist 1 and iron core on the iron core at end 1 stem draws screw rod 3;Joist 1, which is equipped with, on the iron core draws screw sleeve 5, and the stem draws the upper end of screw rod 3 from drawing screw rod Correspondence hole location on sleeve 5 is stretched out;The stem draws the both ends of screw rod 3 to be fastened respectively by drawing bolt and nut 7;The drawing screw rod set The outer ring of cylinder 5 is arranged with butterfly spring group 4, and the top of butterfly spring group 4 is equipped with the pressurization swivel nut 6 being spirally connected with drawing screw sleeve 5.
Poke hole 61 can be equipped on the pressurization swivel nut 6, just with adjust the pressurization swivel nut 6 and draw screw sleeve 5 Relative position.As a specific embodiment: being uniformly distributed circumferentially stirring for four blind hole shapes on the outside of the pressurization swivel nut 6 Hole 61 can meet the angle demand of adjustment pressurization swivel nut 6, so that operation is more convenient.
As a specific embodiment: the stem draws screw rod 3 to have five altogether, and wherein center is equipped with one, remaining Four are circumferentially uniformly distributed along center.Disperse the stem and draw pulling force suffered by 15 junction of joist under screw rod 3 and iron core, It reduces each stem and draws pulling force suffered by screw rod 3, optimize stress condition.
As a specific embodiment: the butterfly spring group 4 is made of six butterfly springs, and one group of two panels, adjacent two Placement direction between group is on the contrary, the dish that disk spring 4 can provide enough pressing forces, and be applied in combination by smaller deformation Spring 4 also has good buffering damping capaicty, can preferably absorb impact and dissipation energy.
As a specific embodiment: it is locking that the stem draws screw rod 3 to be equipped with the place of being spirally connected for drawing bolt and nut 7 Glue-line;Clamping washer 2 is equipped on the iron core between joist 1 and the drawing screw sleeve 5, butterfly spring group 4.Locking glue-line can Prevent use process newel from screw rod 3 being drawn to loosen because of vibration or stress;The line that butterfly spring 4 is applied to it by clamping washer 2 Type power is uniformly applied to joist 1 on iron core by 2 lower end surface of clamping washer, damage when can also prevent 4 compressive deformation of butterfly spring The surface of joist 1 on iron core.
Referring to fig. 4,6, the iron core of electric reactor pressing device of the utility model, including iron core of electric reactor compressing structure, wherein Drawing screw sleeve 5 be spirally connected and connect swivel nut 8, lower end is bolted in the compression bolt 10 of connection swivel nut 8, and is sequentially sheathed on institute State the clamp sleeve 9 and hollow hydraulic cylinder 11 of compression bolt 10;It is locked by locking nut 13 10 upper end of compression bolt Tightly;The clamp sleeve 9 is equipped with action pane 911.
As a specific embodiment: the clamp sleeve 9 by tubular type barrel 91 and collar plate shape bearing plate 92 welding and At;The collar plate shape bearing plate 92 is sheathed on the compression bolt 10;The 91 lower section two sides of barrel are respectively provided with one in long waist The action pane 911 of hole shape, the action pane 911 of long lumbar hole shape can expand the angular range of the adjustment pressurization swivel nut 6 of poke rod 14, It is more convenient to make to operate.
As a specific embodiment: the hollow hydraulic cylinder 11 is 95 tons of hollow hydraulic cylinders, it is possible to provide enough compressions Power.
As a specific embodiment: described compress is used between bolt 10 and the locking nut 13 equipped with the double-deck washer 12, it is conveniently adjusted gap between connector and prevents connection from loosening.
Referring to Fig. 7-16, the installation procedure (step) of the core of reactor compressing structure of the utility model and pressing device is such as Under:
Firstly, carrying out compressing structure installation:
(1) stem is drawn screw arbor assembly 3 to pass through joist 1 on iron core, iron core 14 and joist 15 under iron core, stem by process 1 It draws 31 bottom end flank of screw rod to be spirally connected and draws bolt and nut 7, the locking glue of point at flank;
(2) washer 2 is sheathed on stem and draws 3 outside of screw arbor assembly by process 2, and lower end surface is contacted with upper joist 1, by butterfly Shape groups of springs 4 is sheathed on stem and draws 3 outside of screw rod, and lower end surface and the 2 upper end face contact of washer, the butterfly spring group 4 are total There are 6 butterfly springs, one group of two panels, placement direction is opposite between two adjacent groups;
(3) process 3, by draw screw sleeve 5 according to the mode that hole location be adapted to be sheathed on stem drawing screw arbor assembly 3, wherein because 5 outer diameter of screw sleeve is drawn to be less than 4 internal diameter of butterfly spring group, butterfly spring group 4, which is sheathed on, draws 5 outside of screw sleeve;
(4) pressurization swivel nut 6 is bolted in and draws 5 outside of screw sleeve, 6 lower end surface of pressurization swivel nut and butterfly bullet by process 4 4 upper end face contact of spring group;
(5) process 5 will draw bolt and nut 7 to be bolted in stem and draw 3 top of screw rod, and draw 7 lower end of bolt and nut and draw screw rod The cylindrical hole lower plane 51 of sleeve 5 leans;
Secondly, carrying out pressing device installation:
(6) connection swivel nut 8 is bolted in and draws 5 upper end of screw sleeve by process 6;
(7) clamp sleeve 9 is sheathed on connection swivel nut 8 outside by process 7, the clamp sleeve 9 be installed in place its lower end with 4 upper surface of butterfly spring group leans;
(8) compression 10 lower end of bolt is passed through clamp sleeve 9, is bolted in connection swivel nut 8 by process 8;
(9) hollow hydraulic cylinder 11 is sheathed on compression bolt 10 by process 9;
(9) lock washer 12 is sheathed on compression bolt 10, and locking nut 12 is bolted in compression spiral shell by process 10 10 upper end of bolt, 12 lower end surface of locking nut compress lock washer 12.
The core of reactor compressing structure compressing method is as follows:
After the installation is completed by compressing structure and pressing device, required pressure value is set, hollow hydraulic cylinder 11 jacks up upwards, It because upper position is relatively fixed, can not jack up, motive force is reacted on into clamp sleeve 9, moves downward it, compress butterfly bullet Spring group 4 is pressurized swivel nut 6 at this time and is in relaxed state, by the action pane 911 of clamp sleeve 9, with stirring stick 16 (referring to figure 5, using stirring the adjustment of stick 16 pressurization swivel nut 6 and drawing the relative position of screw sleeve 5, the stick 16 of stirring is to set handled circle Cylindricality barred body, barred body diameter are less than 61 diameter of poke hole, are inserted into convenient for barred body and fluctuate dialling on the pressurization swivel nut 6 Dynamic 61 diameter of hole.) pressurization swivel nut 6 is stirred downwards close to butterfly spring group 4;It is operated by 3~5 times, reaches authorized pressure value Afterwards, pressurization swivel nut 6 is stirred for the last time, it is made to be adjacent to butterfly spring group 4;Release and compression tooling is removed after the completion, butterfly bullet As soon as spring group 4, to 5 upward power of screw sleeve are drawn, is drawn screw sleeve 5 to pass to and draws bolt and nut 7 same by pressurization swivel nut 6 The upward active force in sample size, direction draws bolt and nut 7 just using the reaction force of butterfly spring group 4 come Anti-loosen stop, passes through Stem draw screw arbor assembly 3 and under iron core 15 lower end surface of joist and be bolted in stem draw screw arbor assembly 3 drawing bolt and nut 7, Apply a same pressure value to iron-cored cake.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. iron core of electric reactor compressing structure, it is characterised in that: including iron core (14) and be respectively arranged on the iron of iron core (14) upper and lower side Joist (15) and at least one pass through joist (15), iron core (14) and iron core pop-up under iron core under joist (1) and iron core on core The stem of beam (1) draws screw rod (3);Joist (1), which is equipped with, on the iron core draws screw sleeve (5), and the stem draws screw rod (3) Upper end is stretched out from the correspondence hole location drawn on screw sleeve (5);The stem draws the both ends of screw rod (3) respectively by drawing bolt and nut (7) it fastens;The outer ring for drawing screw sleeve (5) is arranged with butterfly spring group (4), the top of butterfly spring group (4) be equipped with The pressurization swivel nut (6) for drawing screw sleeve (5) to be spirally connected.
2. iron core of electric reactor compressing structure according to claim 1, it is characterised in that: the pressurization swivel nut (6) is equipped with Poke hole (61).
3. iron core of electric reactor compressing structure according to claim 2, it is characterised in that: the outer lateral edge of the pressurization swivel nut (6) Circumferentially it is uniformly distributed the poke hole (61) of four blind hole shapes.
4. iron core of electric reactor compressing structure according to claim 1,2 or 3, it is characterised in that: the stem draws screw rod (3) Five altogether, wherein center is equipped with one, remaining four are circumferentially uniformly distributed along center.
5. iron core of electric reactor compressing structure according to claim 4, it is characterised in that: the butterfly spring group (4) is by six Piece butterfly spring composition, one group of two panels, placement direction is opposite between two adjacent groups.
6. iron core of electric reactor compressing structure according to claim 5, it is characterised in that: the stem draws screw rod (3) and institute It states and the place of being spirally connected of bolt and nut (7) is drawn to be equipped with locking glue-line;Joist (1) and the drawing screw sleeve (5), butterfly on the iron core Clamping washer (2) are equipped between groups of springs (4).
7. iron core of electric reactor pressing device, it is characterised in that: including the iron core of electric reactor compressing structure described in claim 1, Drawing screw sleeve (5) therein, which is spirally connected, to be connected swivel nut (8), and lower end is bolted in the compression of connection swivel nut (8) with bolt (10), and Sequentially it is sheathed on the clamp sleeve (9) and hollow hydraulic cylinder (11) of the compression bolt (10);Described compress uses bolt (10) It is locked by locking nut (13) upper end;The clamp sleeve (9) is equipped with action pane (911).
8. iron core of electric reactor pressing device according to claim 7, it is characterised in that: the clamp sleeve (9) is by round tube Type tube wall (91) and collar plate shape bearing plate (92) are welded;The collar plate shape bearing plate (92) is sheathed on the compression bolt (10);Below the barrel (91) two sides be respectively provided with one be in long lumbar hole shape action pane (911).
9. iron core of electric reactor pressing device according to claim 7, it is characterised in that: the hollow hydraulic cylinder (11) is 95 The hollow hydraulic cylinder of ton.
10. iron core of electric reactor pressing device according to claim 7, it is characterised in that: it is described compress with bolt (10) with The double-deck washer (12) is equipped between the locking nut (13).
CN201820856302.2U 2018-06-04 2018-06-04 Core of reactor compressing structure and pressing device Active CN208796784U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820856302.2U CN208796784U (en) 2018-06-04 2018-06-04 Core of reactor compressing structure and pressing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820856302.2U CN208796784U (en) 2018-06-04 2018-06-04 Core of reactor compressing structure and pressing device

Publications (1)

Publication Number Publication Date
CN208796784U true CN208796784U (en) 2019-04-26

Family

ID=66200710

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820856302.2U Active CN208796784U (en) 2018-06-04 2018-06-04 Core of reactor compressing structure and pressing device

Country Status (1)

Country Link
CN (1) CN208796784U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108597799A (en) * 2018-06-04 2018-09-28 三变科技股份有限公司 Core of reactor compressing structure and pressing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108597799A (en) * 2018-06-04 2018-09-28 三变科技股份有限公司 Core of reactor compressing structure and pressing device

Similar Documents

Publication Publication Date Title
CN203686487U (en) Reinforcing device of main hanging threaded rod of anti-seismic support
CN106438805B (en) A kind of pull rod guide type complex spring damper
CN208796784U (en) Core of reactor compressing structure and pressing device
CN108152119A (en) A kind of multidirectional loading device of general K shapes node and method
CN201348995Y (en) Press mounting mechanism of thyristor valve
CN203356979U (en) Pin dismounting device
CN117211552A (en) Shock-absorbing structure is consolidated to transmission tower sloping material and transmission tower
CN108597799A (en) Core of reactor compressing structure and pressing device
CN110145155B (en) Civil engineering anti-seismic mechanism and production method thereof
CN104690683B (en) A kind of instrument and method for dismounting dismantling fastening piece on motor output shaft
CN212689031U (en) Rigid connecting piece connected to upper and lower reinforcement cages of load box
CN203965234U (en) A kind of test of the adjustable arm of force loads load transfer device
CN206718549U (en) Bulb bindiny mechanism and compression device
CN208311713U (en) A kind of hydraulic flange of high intensity
CN220537841U (en) Blast furnace blast pipe convenient to installation
CN221974487U (en) Jacking pipe auxiliary jacking device
CN106246782B (en) A kind of rod-pulling type complex spring damper of predeterminable early stage rigidity
CN216478356U (en) Hexagonal flange large-specification external member locknut
CN215807088U (en) Combined type waveform expansion joint
CN111101650A (en) High-strength bolt connection arc-shaped end plate sliding friction energy dissipation column base joint
CN216789085U (en) Easy dismouting has shock absorber that lifts by crane function
CN212478160U (en) Self-resetting device with self-adjusting multistage rigidity
CN202370783U (en) Four-stage cylinder guide mechanism of compressor
CN211200407U (en) Prestress control locking device
CN216284053U (en) Spring oil cylinder force measuring device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant