CN207696464U - Bolt tensioning jack - Google Patents
Bolt tensioning jack Download PDFInfo
- Publication number
- CN207696464U CN207696464U CN201721922901.1U CN201721922901U CN207696464U CN 207696464 U CN207696464 U CN 207696464U CN 201721922901 U CN201721922901 U CN 201721922901U CN 207696464 U CN207696464 U CN 207696464U
- Authority
- CN
- China
- Prior art keywords
- shell
- bearing cylinder
- bolt tensioning
- tensioning jack
- cylinder
- 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
- 238000007789 sealing Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 230000006978 adaptation Effects 0.000 description 4
- 241000316770 Deschampsia cespitosa var. alpina Species 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The utility model is related to a kind of bolt tensioning jacks comprising：Stretcher main body, stretcher main body include tubular shell and the tensile part that is set in shell, and tensile part includes can be along the screw rod switching cylinder of the axial movement of shell；Locking member, locking member include the nut check sleeve for supporting cylinder and being set in bearing cylinder；Screw rod switching cylinder and the coaxial arrangement of nut check sleeve, locking member are detachably connected by supporting cylinder with shell.The locking member that the bolt tensioning jack of the utility model embodiment has stretcher main body and is detachably connected with stretcher main body itself has versatility, adaptable.
Description
Technical field
The utility model is related to stretcher technical fields, more particularly to a kind of bolt tensioning jack.
Background technology
Bolt is that machinery field assembles indispensable parts.Bolt generally includes screw rod and nut.Screw rod and nut
Locking mode than other fixed forms more firm stable.The screw rod used in some large scale equipments is thicker, and nut is larger.Spiral shell
For the locking process of bar and nut by being accomplished manually, labor intensity is big.Simultaneously as usually using multiple bolts in large scale equipment
Complete being connected and fixed for parts.When therefore, using manually being fastened to each bolt, each bolt itself stress can be caused not
Together, bonding strength is influenced.Currently, be pre-stretched to screw rod using stretcher, then locking nut again, keep each screw rod from
Body stress is roughly the same.Existing stretcher can only match a kind of bolt of model, poor universality, and adaptability is poor.
Utility model content
The utility model embodiment provides a kind of bolt tensioning jack, bolt tensioning jack have stretcher main body and with stretching
The locking member that device main body is detachably connected itself has versatility, adaptable.
On the one hand, the utility model embodiment proposes a kind of bolt tensioning jack comprising：Stretcher main body, stretcher
Main body includes tubular shell and the tensile part that is set in shell, and tensile part includes can be along the axial movement of shell
Screw rod switching cylinder；Locking member, locking member include the nut check sleeve for supporting cylinder and being set in bearing cylinder；Screw rod turns
Connect cylinder and the coaxial arrangement of nut check sleeve, locking member are detachably connected by supporting cylinder with shell.
According to the one side of the utility model embodiment, shell is towards one end of bearing cylinder and supports cylinder towards shell
One end is mutually arranged, and shell is connect with bearing cylinder by fastener.
According to the one side of the utility model embodiment, be provided on shell it is more than two, radially extended along itself
Connecting hole, support be provided on cylinder it is more than two, along the mounting hole itself radially extended, connecting hole and mounting hole one are a pair of
Standard, fastener are set in connecting hole and mounting hole.
According to the one side of the utility model embodiment, one end of shell towards locking member is provided with the first positioning
The one end in portion, bearing cylinder towards shell is provided with the second positioning region, and the first positioning region and the second positioning region shape match, shell
The first positioning region with bearing cylinder the second positioning region be mutually located by connecting.
According to the one side of the utility model embodiment, the first positioning region is step-like boss, and the second positioning region is platform
Scalariform groove.
According to the one side of the utility model embodiment, region setting corresponding with nut check sleeve on cylinder is supported
It further includes the driving part for being correspondingly arranged with through-hole and being connected with nut check sleeve, driving part to have through-hole, locking member
For driving nut check sleeve to rotate.
According to the one side of the utility model embodiment, nut check sleeve includes external toothing, and driving part includes master
Moving gear, driving gear pass through through-hole and external toothing engaged transmission.
According to the one side of the utility model embodiment, setting is supported in the peripheral surface of cylinder there are two allowing bit plane,
Two allow bit plane along the axis for axis symmetry setting of bearing cylinder.
According to the one side of the utility model embodiment, shell and bearing cylinder are tightly connected.
According to the one side of the utility model embodiment, it is tightly connected by sealing ring between shell and bearing cylinder.
The bolt tensioning jack of the utility model embodiment has stretcher main body and is detachably connected with stretcher main body
Locking member.Stretcher main body is used to apply drawing force to screw rod.Locking member is used to support entire spiral shell in component surface
Bolt stretcher, while being also used for screwing locking nut.It, can root since locking member and stretcher main body are detachably connected
Length according to screw rod and the thin degree using gasket select the locking member of adaptation, and the locking member selected is quick
Accurately it is connected and fixed with stretcher main body.In this way, the bolt tensioning jack of the utility model embodiment has versatility, energy is adapted to
Power is strong, reduces the production cost of bolt tensioning jack, also improves bolt tension working efficiency.
Description of the drawings
The feature, advantage and technique effect of the utility model exemplary embodiment described below with reference to the accompanying drawings.
Fig. 1 is the overall structure diagram of the bolt tensioning jack of one embodiment of the utility model；
Fig. 2 is the schematic cross-sectional view of the bolt tensioning jack of one embodiment of the utility model；
Fig. 3 is partial enlarged view at A in Fig. 2；
Fig. 4 is the decomposition texture schematic diagram of the stretcher main body and locking member of one embodiment of the utility model.
In the accompanying drawings, attached drawing is not drawn according to actual ratio.
Description of symbols：
1, stretcher main body；11, shell；111, the first positioning region；12, screw rod switching cylinder；
2, locking member；21, cylinder is supported；211, the second positioning region；212, bit plane is allowed；22, nut check sleeve；
3, fastener；
4, driving part；
5, sealing ring.
Specific implementation mode
The embodiment of the utility model is described in further detail with reference to the accompanying drawings and examples.Following embodiment
The detailed description and the accompanying drawings for illustratively illustrating the principles of the present invention, but cannot be used for limiting the model of the utility model
It encloses, i.e., the utility model is not limited to described embodiment.
In the description of the present invention, it should be noted that unless otherwise indicated, the meaning of " plurality " is two or two
More than a；The orientation or positional relationship of the instructions such as term "upper", "lower", "left", "right", "inner", "outside" is merely for convenience of retouching
State the utility model and simplify and describe, do not indicate or imply the indicated device or element must have a particular orientation, with
Specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second "
Etc. being used for description purposes only, it is not understood to indicate or imply relative importance.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be directly connected, it can also be indirectly connected through an intermediary.For the ordinary skill in the art,
Visual concrete condition understands the concrete meaning of above-mentioned term in the present invention.
The utility model in order to better understand, with reference to Fig. 1 to Fig. 4 to the bolt tension of the utility model embodiment
Device is described in detail.
Fig. 1 schematically shows the overall structure of the bolt tensioning jack of one embodiment of the utility model.Fig. 2 is schematically
Show the sectional structure of the bolt tensioning jack of one embodiment of the utility model.Fig. 3 is partial enlarged view at A in Fig. 2.Fig. 4 shows
Show to meaning property the decomposition texture of the stretcher main body and locking member of one embodiment of the utility model.
All larger bolt pair realizations of use intensity are connected and fixed between many parts in wind power generating set.Bolt pair
Including the screw rod and nut being used in conjunction with each other.The bolt tensioning jack of the utility model embodiment can be to the screw rod that is installed in place
Stretched so that screw rod is elongated in itself axial dimension, then again by nut driving in place, nut presses on component surface
Afterwards, bolt tensioning jack discharges screw rod.At this point, screw rod itself has tensile stress so that screw rod, which exists, restores former long trend, from
And further tightening nut, to effectively improve the bonding strength of nut and screw rod.In addition, screw rod in the long-term use can
It is stretched elongated, to generate amount of tension in itself axial direction.But since screw rod is pre-stretched by bolt tensioning jack, screw rod
The amount of tension that itself can compensate for generating loosens to avoid nut from being disengaged with component surface, and then ensures to make
Connection status stable for extended periods of time between each parts being connected and fixed with bolt pair.
In some cases, it is desirable to be arranged the smaller shim liner of axial dimension or the larger hassock of axial dimension on screw rod
Then piece screws top nut again, to meet the connection requirement of different occasions.Bolt tensioning jack at work, needs to rely on zero
The surface of part is as supporting surface.Therefore, it is necessary to bolt tensioning jacks can adapt to various sizes of gasket, avoid because of spacer thickness
It is excessive, and make bolt tensioning jack that can not be pressed on component surface, and then can not exert a force to screw rod and stretch screw rod.
Shown in referring to Figures 1 and 2, the bolt tensioning jack of the utility model embodiment includes stretcher main body 1 and tight lock part
Part 2.Stretcher main body 1 includes tubular shell 11 and the tensile part being set in shell 11.Tensile part includes being capable of edge
The screw rod switching cylinder 12 of the axial movement of shell 11.Bolt tensioning jack can pass through screw rod switching cylinder 12 and screw rod spiral shell to be tensioned
Line connects, in order to apply drawing force to screw rod.Locking member 2 includes the nut for supporting cylinder 21 and being set in bearing cylinder 21
Locking sleeve 22.Bearing cylinder 21 is for being sheathed on outside screw rod, and the end face of its end far from shell 11 can press on zero
Parts surface is to support entire bolt tensioning jack.After screw rod is stretched to predetermined length, driven using nut check sleeve 22
Nut rotation makes nut touch the surface of component surface or gasket to tighten nut.Screw rod switching cylinder 12 and nut check
Sleeve 22 is coaxially disposed.
The locking member 2 of the present embodiment is detachably connected by supporting cylinder 21 with shell 11.In this way, the locking of the present embodiment
Component 2 can make multiple models, to select adaptation according to actual screws length difference and/or using shim size difference
Locking member 2.After the locking member 2 for selecting adaptation, locking member 2 and stretcher main body 1 are connected and fixed, then use group
Bolt tensioning jack after dress carries out stretched operation to screw rod, and torquing operations are carried out to nut.When using shim liner, it can select
Support the smaller locking member 2 of 21 axial dimension of cylinder.When using hassock piece, bearing 21 axial dimension of cylinder can be selected larger
Locking member 2.The bolt tensioning jack versatility higher of the present embodiment, it is applied widely, while only need according to spiro rod length and/
Or locking member 2 accordingly is replaced using shim size, and it is simple and convenient, improve screw rod drawing work efficiency.
The stretcher main body 1 of the present embodiment includes that can drive the hydraulic-driven that screw rod switching cylinder 12 is moved axially along itself
System.Screw rod switching cylinder 12 is driven to move by hydraulic power unit, axial force can be applied to screw rod, to stretch screw rod.
With reference to shown in Fig. 3, the shell 11 of the stretcher main body 1 of the present embodiment towards one end of locking member 2 and supports cylinder
21 are mutually arranged towards one end of shell 11.Shell 11 is detachably connected with bearing cylinder 21 by fastener 3, and 11 He of shell is improved
Support the coupling stiffness of cylinder 21.
In one embodiment, be provided on shell 11 it is more than two, along the connecting hole itself radially extended.Support cylinder
Be provided on 21 it is more than two, along the mounting hole itself radially extended.Connecting hole and mounting hole are aligned one by one.Fastener 3 is set
It is placed in connecting hole and mounting hole, shell 11 and bearing cylinder 21 is connected and fixed.
Optionally, fastener 3 is locking pin.It is provided with threaded hole on one end end face of locking pin.It is pushed by locking pin
After mounting hole and connecting hole, locking pin can be interference fitted with mounting hole and connecting hole, and shell 11 and bearing cylinder 21 are connected
It is fixed.When needing replacing locking member 2, the threaded hole of locking pin is screwed into using tool, and locking pin is extracted, so that shell
11 are disconnected state with bearing cylinder 21.
Optionally, fastener 3 is screw.Connecting hole on shell 11 is threaded hole.Screw pass through mounting hole end with
Connecting hole is threadedly coupled, to which shell 11 and bearing cylinder 21 to be connected and fixed.When needing replacing locking member 2, tool is used
Back-out screw, so that shell 11 and bearing cylinder 21 are disconnected state.By the way of screw, convenient disassembly quickly and shell
11 stablize with bearing 21 connection status of cylinder.
With reference to shown in Fig. 4, one end of the shell 11 towards bearing cylinder 21 of the utility model embodiment is provided with the first positioning
Portion 111.One end of bearing cylinder 21 towards shell 11 is provided with the second positioning region 211.First positioning region 111 and the second positioning region
211 shapes match.First positioning region 111 of shell 11 and the second positioning region 211 of bearing cylinder 21 are mutually located connection.This
Sample, locking member 2 and shell 11 can realize quick, accurate positionin, in order to use fastener 3 to be connected and fixed, improve locking
The packaging efficiency of component 2 and stretcher main body 1.
In one embodiment, the first positioning region 111 is step-like boss.Second positioning region 211 is step-like groove.The
One positioning region 111 is easy to fabricate with the second positioning region 211.Match with 211 bumps of the second positioning region the first positioning region 111
Close, accurate positioning, quickly, while concave-convex fit structure enable to shell 11 and bearing 21 join domain of cylinder carry larger axis
Xiang Li ensures the stability for stretching screw rod process.
Region corresponding with nut check sleeve 22 is provided with through-hole on the bearing cylinder 21 of the utility model embodiment.It is logical
Hole is radially extended along bearing cylinder 21.Locking member 2 further includes being correspondingly arranged with through-hole and being connected with nut check sleeve 22
Driving part 4.Driving part 4 is for driving nut check sleeve 22 to rotate.Screw rod is stretched using screw rod switching cylinder 12
When to predetermined length, the nut part being used cooperatively with screw rod enters nut check sleeve 22.Start driving part 4 to drive
Nut check sleeve 22 rotates, and is moved further into axially along a screw to drive nut rotation to being drawn with offsetting screw rod
The amount of stretching improves the degree of automation of bolt tensioning jack, reduces operating process labor intensity.
In one embodiment, nut check sleeve 22 includes external toothing.Driving part 4 includes driving gear.Driving tooth
Wheel is across through-hole and external toothing engaged transmission.Gear-driven efficiency is high, and torque is big, can apply the load of bigger to nut, with
Ensure that nut check state is more stable.Optionally, driving part 4 further includes the motor for driving driving gear rotation.
Shown in referring to Fig.1, bit plane is allowed there are two settings in the peripheral surface of the bearing cylinder 21 of the utility model embodiment
212.Two allow bit plane 212 along the axis for axis symmetry setting of bearing cylinder 21.It, can with the bearing cylinder 21 of bit plane 212 is allowed
The smaller situation in gap between the two neighboring screw rod in multiple screw rods is adapted to, the adaptability of bolt tensioning jack is improved.
The shell 11 and bearing cylinder 21 of the utility model embodiment are tightly connected.Shell 11 is towards one end of locking member 2
After being connected with each other towards one end of shell 11 with bearing cylinder 21, is formed and sealed in join domain, to prevent foreign matter from entering spiral shell
Fluid inside bolt stretcher or inside bolt tensioning jack is leaked from the join domain.
In one embodiment, it is tightly connected by sealing ring 5 between shell 11 and bearing cylinder 21.The end of shell 11
Annular groove is provided in peripheral surface.Sealing ring 5 is sheathed in the annular groove on the end of the shell 11.Bearing cylinder 21 is socketed on
When the end of shell 11, cylinder 21 and 11 common crush seal circle 5 of shell are supported, so that the two join domain is in sealing state.
Optionally, sealing ring 5 can be rubber or silica gel material.
The bolt tensioning jack of the utility model embodiment uses process：
Structural member to be connected is passed through using screw rod in advance, gasket is arranged on screw rod, by nut driving on screw rod, but
Not locking nut.
The locking member 2 for supporting cylinder 21 with fit size is selected, bearing cylinder 21 is then passed through into fastener 3 and stretcher
The shell 11 of main body 1 is connected.
Bearing cylinder 21 is sheathed on to the outside of screw rod along the axial direction of screw rod.The one end of bearing cylinder 21 far from shell 11 presses on
On the surface of structural member or gasket.A part for nut enters in nut check sleeve 22.Screw rod or screw rod switching cylinder 12 are screwed,
So that the tail end of screw rod is threadedly coupled with screw rod switching cylinder 12.
Start the hydraulic power unit for driving screw rod switching cylinder 12 to move, driving screw rod switching cylinder 12 along shell 11 it is axial to
It moves to stretch screw rod in direction far from bearing cylinder 21.
After screw rod is stretched to predetermined length, stop hydraulic power unit.Using 22 screw on nut of nut check sleeve, with lock
Tight nut.
Screw rod switching cylinder 12 is screwed, is disconnected with the tail end with screw rod, screw rod drawing work is completed.
The bolt tensioning jack of the utility model embodiment has stretcher main body 1 and detachably connects with stretcher main body 1
The locking member 2 connect.Stretcher main body 1 is used to apply drawing force to screw rod.Locking member 2 is used to support in component surface whole
A bolt tensioning jack, while being also used for screwing locking nut.Since locking member 2 and stretcher main body 1 are detachably connected,
Can the length according to screw rod and the thin degree using gasket select the locking member 2 of adaptation, and the locking that will be selected
Component 2 is rapidly and accurately connected and fixed with stretcher main body 1.In this way, the bolt tensioning jack of the utility model embodiment have it is logical
It is adaptable with property, the production cost of bolt tensioning jack is reduced, bolt tension working efficiency is also improved.
Although the present utility model has been described by reference to the preferred embodiments, but in the model for not departing from the utility model
In the case of enclosing, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as not depositing
In structural conflict, items technical characteristic mentioned in the various embodiments can be combined in any way.The utility model
It is not limited to specific embodiment disclosed herein, but includes all technical solutions fallen within the scope of the appended claims.
Claims (10)
1. a kind of bolt tensioning jack, which is characterized in that including：
Stretcher main body (1), the stretcher main body (1) include tubular shell (11) and are set in the shell (11)
Tensile part, the tensile part includes can be along the screw rod switching cylinder (12) of the axial movement of the shell (11)；
Locking member (2), the locking member (2) include the nut for supporting cylinder (21) and being set in the bearing cylinder (21)
Locking sleeve (22)；The screw rod switching cylinder (12) and the nut check sleeve (22) coaxial arrangement, the locking member (2)
It is detachably connected with the shell (11) by the bearing cylinder (21).
2. bolt tensioning jack according to claim 1, which is characterized in that the shell (11) is towards the bearing cylinder (21)
One end and one end of bearing cylinder (21) towards the shell (11) be mutually arranged, the shell (11) and the bearing cylinder
(21) it is connected by fastener (3).
3. bolt tensioning jack according to claim 2, which is characterized in that be provided with two or more on the shell (11)
, be provided with along the connecting hole itself radially extended, the bearing cylinder (21) it is more than two, along the peace itself radially extended
Hole is filled, the connecting hole and the mounting hole are aligned one by one, and the fastener (3) is set to the connecting hole and the mounting hole
It is interior.
4. bolt tensioning jack according to claim 1, which is characterized in that the shell (11) is towards the locking member
(2) one end is provided with the first positioning region (111), and one end of bearing cylinder (21) towards the shell (11) is provided with second
Positioning region, first positioning region (111) and second positioning region shape match, and described the first of the shell (11) is fixed
Position portion (111) is mutually located by connecting with second positioning region of the bearing cylinder (21).
5. bolt tensioning jack according to claim 4, which is characterized in that first positioning region (111) is step-like convex
Platform, second positioning region (211) are step-like groove.
6. bolt tensioning jack according to claim 1, which is characterized in that on the bearing cylinder (21) with the nut check
Sleeve (22) corresponding region is provided with through-hole, the locking member (2) further include be correspondingly arranged with the through-hole and with institute
The driving part (4) that nut check sleeve (22) is connected is stated, the driving part (4) is for driving the nut check sleeve
(22) it rotates.
7. bolt tensioning jack according to claim 6, which is characterized in that the nut check sleeve (22) includes external tooth
Circle, the driving part (4) includes driving gear, and the driving gear passes through the through-hole and external toothing engaged transmission.
8. bolt tensioning jack according to claim 1, which is characterized in that be arranged in the peripheral surface of the bearing cylinder (21)
There are two bit plane (212) is allowed, allow bit plane (212) along the axis for axis symmetry setting of the bearing cylinder (21) described in two.
9. bolt tensioning jack according to claim 1, which is characterized in that the shell (11) and the bearing cylinder (21) are close
Envelope connection.
10. bolt tensioning jack according to claim 9, which is characterized in that the shell (11) and the bearing cylinder (21)
Between pass through sealing ring (5) be tightly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721922901.1U CN207696464U (en) | 2017-12-29 | 2017-12-29 | Bolt tensioning jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721922901.1U CN207696464U (en) | 2017-12-29 | 2017-12-29 | Bolt tensioning jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207696464U true CN207696464U (en) | 2018-08-07 |
Family
ID=63030734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721922901.1U Active CN207696464U (en) | 2017-12-29 | 2017-12-29 | Bolt tensioning jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207696464U (en) |
-
2017
- 2017-12-29 CN CN201721922901.1U patent/CN207696464U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203253867U (en) | Hydraulic clamping rotary mechanical hand for forging manipulator | |
| CN202468628U (en) | Self-balancing large-diameter bolt and special motorized torque wrench device for same | |
| CN210588042U (en) | Device for screwing nut of main shaft of aircraft engine | |
| CN203772637U (en) | Minimum bolt tensile load test fixture | |
| CN205393962U (en) | Assembly quality of full -automatic nut of screwing | |
| CN207696464U (en) | Bolt tensioning jack | |
| CN203348282U (en) | Locking device for large-specification bolt connecting piece | |
| CN209999111U (en) | simple multifunctional hand-operated device | |
| CN211565753U (en) | Dismounting device for toothed nut of engine | |
| CN202531587U (en) | Screw type driving tensioning mechanism | |
| CN204209591U (en) | A kind of for circulatory spherical hydraulic power-assisted steering gear valve centering clamp | |
| CN202926821U (en) | Self-locking hydraulic nut | |
| CN207807604U (en) | A kind of aviation accessory parts disassembling fixture integrating stretching and dismounting | |
| CN107984193A (en) | A kind of shaft assembled speed reducer press mounting tool | |
| CN210196701U (en) | Pipeline union convenient to fasten and fastening device | |
| CN211805808U (en) | Multi-functional screwdriver of angularly adjustable | |
| CN203629932U (en) | Clamp for clamping metallic phase test piece | |
| CN207788177U (en) | A kind of shaft assembled speed reducer press mounting tool | |
| CN215293308U (en) | Driving shaft connecting flange for speed reducer | |
| CN207240018U (en) | A kind of nuclear power main pump no-load test locks rotor arrangement | |
| CN105834999A (en) | String core clamp tightening tool | |
| CN217926595U (en) | Nut fastening device | |
| CN205417760U (en) | Rack and pinion hydrostatic steering unit hydraulic pressure cylinder end oil leakage detection device | |
| CN203679697U (en) | Disassembling and assembling tool for sealed framework | |
| CN203696879U (en) | Manual screwing tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |