CN203944685U - The device of oil pipe bending - Google Patents

The device of oil pipe bending Download PDF

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Publication number
CN203944685U
CN203944685U CN201320734611.XU CN201320734611U CN203944685U CN 203944685 U CN203944685 U CN 203944685U CN 201320734611 U CN201320734611 U CN 201320734611U CN 203944685 U CN203944685 U CN 203944685U
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Prior art keywords
rhabodoid
bending
bent
profiled
net shape
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CN201320734611.XU
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Chinese (zh)
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姚宏峰
王月云
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Yangzhou Forging Machine Tool Co Ltd
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Yangzhou Forging Machine Tool Co Ltd
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Abstract

The utility model relates to the device of oil pipe bending, and it comprises: pedestal (1), block roller (2) and profiled part (60), is characterized in that: described apparatus for bending also comprises afterburning parts (40); And described profiled part (60) has the profile (61) complementary with the net shape (81) of the part to be bent of described rhabodoid (8); Described afterburning parts (40) comprise simulation follow-on subassembly (401), the movement locus line of described simulation follow-on subassembly (401) to described net shape (81) similar geometrically, and described afterburning parts (40) apply active force according to described movement locus line to described rhabodoid (8), make described rhabodoid (8) the described profile (61) that reclines be bent into described net shape (81).Adopt technique scheme, a kind of easy and simple to handle, oil pipe apparatus for bending that reliability is high is provided, shortened the time of bending and reduced operator's intensity.

Description

The device of oil pipe bending
Technical field
The utility model relates to the apparatus for bending of rhabodoid, relates in particular to the apparatus for bending of oil pipe.
Background technology
Owing to conventionally purchasing the oil pipe of returning, all become solid shape, can not meet the requirement of assembling, in lathe assembling, in the process of oil circuit wiring, needs for position, must put in place by cabling, and make whole layout attractive in appearance, therefore must carry out bending to coordinate circuit needs to this oil pipe.By tubular workpiece bending, it is more conventional processing technology in machine components processing, current bending technique has manually and two kinds of processing modes of machinery, manually bending is to adopt tool by workpiece compressing distortion, but operating procedure is complicated conventionally, and working (machining) efficiency is slower, and workpiece bending precision is not high, very easily there is dog leg or slight crack, cause defect rate high, the bad situation that production efficiency is low, is not suitable for large-scale production.And adopt automatic machine equipment processing work, although working (machining) efficiency and precision increase, the common complex structure of process equipment, cost is higher.
Application number is the Chinese utility model patent of 201220102792.X, discloses a kind of many diameter work pieces of multi-angle apparatus for bending, and this device comprises with lower member: base plate; Pedestal, described pedestal is fixed on base plate, and the top of pedestal is provided with a cylinder die holder, and described cylinder die holder is provided with along its circumference side the circumferential groove that multiturn is parallel to each other; Bending handle, described bending handle is fixed with a briquetting in the one end near cylinder die holder; Be rectangular-shaped module, when described bending handle is positioned at initial position, described module is shelved between described cylinder die holder and described briquetting, described module on the side towards cylinder die holder, be provided with described cylinder die holder on circumferential groove straight type groove one to one.During bending, in the groove gap between workpiece insert module and cylinder die holder, rotate bending handle, make briquetting slip over the lateral surface of module, impel workpiece along the shape bending of circumferential groove on cylinder die holder.The workpiece apparatus for bending of this utility model is convenient to manual operations, can reduce the cost of production and processing.But, during due to this utility model patent of enforcement, need other manual placement module, to operation, brought not convenient and unsettled risk, therefore affected efficiency and the quality of pipe fitting bending.
Application number is 200820122826.5 Chinese utility model patent, discloses a kind of U shaped high pressure fuel pipe bending tool device.This device is supported by two panels, and between panel and rest pad, by bolt-connection, roller is fixed by roller pin, plays supporting and slip effect; Location-plate and dog screw are equipped with in the side of two panels; Panel inner wall is provided with chute, and U-shaped pressure head can be slided up and down in chute.This device has been realized and on ordinary press, has been carried out U-shaped bend pipe making processing.But this device only can be made U-shaped bend pipe, can not realize the function of 360 degree bending oil pipes.
Application number is 201120280913.5 Chinese utility model patent, discloses a kind of pipe fitting fold bending apparatus, and this device comprises base, wheel mould, locating piece and for pressing from both sides the fixture of hanging tube part; Described base is provided with a vertical rotating shaft, and the described mould of taking turns is a cylinder, is coaxially fixed in rotating shaft, and its cylinder is provided with a circle bend pipe groove; Described fixture is slidably mounted on base, describedly take turns the forming blocks that mould is provided with a slip, described locating piece is slidably mounted on base, and between fixture and forming blocks, on described base, be fixed with one wrinkle resistant, described locating piece and wrinkle resistant clamp pipe fitting for subtend, and the described mould of taking turns is for driving forming blocks to rotate, thereby by pipe fitting bending and molding.This utility model patent utilizes wrinkle resistant to encase with locating piece subtend the pipe shaft that pipe fitting is treated bending part section start, make this place's pipe shaft stress equalization, the interior crook of the bending part tube wall that can effectively prevent pipe fitting during bending operation is taken turns the crowded wrinkle of mould, therefore can improve the bending quality of pipe fitting.But because this device arranges complexity, high expensive, has affected production efficiency and cost control.
In the today to production efficiency and quality requirement increasingly stringent, how processing cheaply high-quality bend pipe is industry urgent problem.
Therefore, those skilled in the art be devoted to develop a kind of operate facility, stability strong, easy oil pipe apparatus for bending is set.
Utility model content
Because the above-mentioned defect of prior art, technical problem to be solved in the utility model is to provide a kind of apparatus for bending of easy and simple to handle, rhabodoid that reliability is high.
For achieving the above object, the utility model proposes the apparatus for bending of rhabodoid, it comprises: pedestal, block roller and profiled part, and described block roller and profiled part are separated by such distance and are arranged on described pedestal: described rhabodoid can be plugged between described block roller and profiled part;
And the first end of the part to be bent of described rhabodoid is against described block roller, and applies active force and make the part to be bent of described rhabodoid around described profiled part brake forming;
It is characterized in that: described apparatus for bending also comprises afterburning parts; And described profiled part has the profile with the net shape complementation of the part to be bent of described rhabodoid; Described afterburning parts comprise simulation follow-on subassembly, the movement locus line of described simulation follow-on subassembly to described net shape similar geometrically, and described afterburning parts apply active force according to described movement locus line to described rhabodoid, make the described rhabodoid described profile that reclines be bent into described net shape.
Adopt technique scheme, a kind of easy and simple to handle, oil pipe apparatus for bending that reliability is high is provided, shortened the time of bending and reduced operator's intensity.
Accompanying drawing explanation
Below with reference to accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is described further, to understand fully the purpose of this utility model, feature and effect.
Fig. 1 is the top view of the apparatus for bending of rhabodoid of the present utility model;
Fig. 2 is the cutaway view dissecing by A-A of Fig. 1;
Fig. 3 is the view of handle bar 4;
Fig. 4 is the view of disk 6;
Fig. 5 is the view of pedestal 1.
In the accompanying drawings, different elements is used different figure notations, and identical element is used identical figure notation, wherein,
1 Pedestal
2 Block roller
3 Rear tight bolt
4 Handle bar
5 Sizing roller
6 Disk
7 Nut
8 Rhabodoid; Oil pipe
40 Afterburning parts
41 The first pivot hole
42 The second pivot hole
60 Profiled part
61 The profile of net shape 81 complementations of described profiled part 60 and part to be bent described rhabodoid 8
81 The net shape of the part to be bent of described rhabodoid 8
401 Simulation follow-on subassembly
The specific embodiment
Referring to figs. 1 through 2, according to main embodiment of the present invention, the apparatus for bending of rhabodoid comprises: pedestal 1, block roller 2 and profiled part 60, and described block roller 2 and profiled part 60 are separated by such distance and are arranged on described pedestal 1: described rhabodoid 8 can be plugged between described block roller 2 and profiled part 60; And the first end of the part to be bent of described rhabodoid 8 is against described block roller 2, and applies active force and make the part to be bent of described rhabodoid 8 around described profiled part 60 brake formings; Described apparatus for bending also comprises afterburning parts 40; And described profiled part 60 has the profile 61 with net shape 81 complementations of the part to be bent of described rhabodoid 8; Described afterburning parts 40 comprise simulation follow-on subassembly 401, the movement locus line of described simulation follow-on subassembly 401 to described net shape 81 similar geometrically, and described afterburning parts 40 apply active force according to described movement locus line to described rhabodoid 8, make the described rhabodoid 8 described profile 61 that reclines be bent into described net shape 81.
Apparatus for bending of the present utility model is mainly used in elongated rod-like articles to carry out flexural deformation, and described rhabodoid is for example thin oil pipe, the copper oil pipe of especially using in various machines.Therefore, in the utility model, rhabodoid refers to that vertical scale is much larger than the object of breadth wise dimension, and its aspect ratio is greater than 10, is preferably more than 20.The cross sectional shape of described rhabodoid can be circular, oblate, square, rectangle, polygon etc.The material of described rhabodoid can be metal such as copper, aluminium, iron etc., can be also other plastic material.Described rhabodoid can be hollow, can be also solid.
As shown in Figure 1, described block roller 2 has the cancave cambered surface of revolution form, is convenient to described rhabodoid 8 location.Described block roller 2 can be threaded connection and be fixed on described pedestal 1.Described block roller 2 can be unitarily formed form, also can be comprised of pivotal axis and disk, as needs also can comprise rolling bearing.
Preferably, as figure profiled part 60 comprises disk 6 and rear tight bolt 3, and described disk 6 is connected on described pedestal 1 by described rear tight bolt 3.Described disk 6 can rotate around the central axis of self, and this can realize by the external diameter that makes the internal diameter of the centre bore 62 of described disk 6 be a bit larger tham the appropriate section of described rear tight bolt 3.Or described disk 6 keeps maintaining static with respect to described pedestal 1, this can realize by described centre bore 62 and tight fit or the interference fit of the appropriate section of described rear tight bolt 3, or described centre bore 62 is square holes, and the appropriate section of described rear tight bolt 3 is square, like this, in the situation that described rear tight bolt 3 is fastened on described pedestal 1, described disk 6 also keeps maintaining static.
As the enforcement modification of profiled part 60, substitute described disk 6, described profiled part 60 comprises square template or regular polygon template, to finally obtain different curved shapes.It will be understood by those skilled in the art that wish described rhabodoid 8 for example oil pipe finally bend to what shape, just can be the mould template of described profiled part 60 configuration respective shapes.
As illustrated in fig. 1 and 2, afterburning parts 40 mainly comprise handle bar 4 and simulation follow-on subassembly 401.As modification, substitute described handle bar 4, described afterburning parts can be the forms of push rod or handle.
As shown in Figure 2, described simulation follow-on subassembly 401 comprises sizing roller 5, and the movement locus of described sizing roller 5 is determined by the pivoting action of described handle bar 4.As modification, described simulation follow-on subassembly comprises sizing roller and conduit or track, and described conduit or track have the shape with net shape 81 geometric similarities of the part to be bent of described rhabodoid 8.Described sizing roller 5 is installed on a support, and described support is arranged on described conduit or track, and described support can be along described conduit or orbital motion under the promotion of one handle or push rod.
As shown in Figure 1, the distance between described block roller 2 and profiled part 60 is definite like this: described rhabodoid 8 can be plugged between described block roller 2 and profiled part 60.And preferably, described block roller 2 can regulate with respect to the position of described profiled part 60 or described pedestal 1, so just can regulate according to the net shape 81 of the part to be bent of described rhabodoid 8 position of described block roller 2, its position adjustments mode can be: at described pedestal 1, by mathematical computations, determine a plurality of apertures of position, described block roller 2 can need to be placed in the aperture of described diverse location by difference; Or described block roller 2 is the mobile relative position relation changing with the center line of described profiled part 60 in can the long slot bore on described pedestal 1.
According to first specific embodiment of apparatus for bending of the present utility model, the net shape 81 that described apparatus for bending is circular arc by the part bending to be bent of described rhabodoid 8.For this reason, as illustrated in fig. 1 and 2, described profiled part 60 comprises disk 6, and described disk 6 upwards has annular groove in its week, and described annular groove forms the profile 61 of net shape 81 complementations of described profiled part 60 and part to be bent described rhabodoid 8.Described simulation follow-on subassembly 401 comprises sizing roller 5, described sizing roller 5 can circle around the central axis of described disk 6, and described rhabodoid 8 is applied to active force, make the described rhabodoid 8 described profile 61 that reclines be bent into the net shape 81 of described circular arc.
The first embodiment circling around the central axis of described disk 6 according to described sizing roller 5, as illustrated in fig. 1 and 2, described afterburning parts 40 also comprise handle bar 4, described handle bar 4 has the first pivot hole 41 at its first end; Described disk 6 has centre bore 62; Rear tight bolt 3 is connected to described handle bar 4 and described disk 6 on described pedestal 1 through described pivoting hole 41, described centre bore 62; Described sizing roller 5 is connected on described handle bar 4 by the second pivot hole 42 in described handle bar 4; On described handle bar 4, can rotate around the central axis of described disk 6, thereby the described sizing roller 5 connecting on it can rotate around the central axis of described disk 6.Such configuration makes described apparatus for bending simple in structure and easy to operate.
The second embodiment circling around the central axis of described disk according to described sizing roller, described afterburning parts comprise handle, support and described simulation follow-on subassembly.Described simulation follow-on subassembly comprises sizing roller and conduit.Described conduit has the shape with net shape 81 geometric similarities of the circular arc of the part to be bent of described rhabodoid 8, and the conduit of described circular arc around described disk be arranged in described pedestal, and their center superposition.Described sizing roller is installed on described support, and described support is arranged on described conduit, and described support can move along described conduit under the promotion of described handle.Therefore, described handle and support can rotate around the central axis of described disk 6, and then the described sizing roller 5 being connected on described support can rotate around the central axis of described disk 6.Such configuration makes described apparatus for bending that larger power is provided, and is suitable for the rhabodoid that diameter is slightly large.
The 3rd embodiment circling around the central axis of described disk according to described sizing roller, described afterburning parts comprise push rod, support and described simulation follow-on subassembly.Described simulation follow-on subassembly comprises sizing roller and track.Described track has the shape with net shape 81 geometric similarities of the circular arc of the part to be bent of described rhabodoid 8, and the track of described circular arc around described disk be arranged on described pedestal, and their center superposition.Described sizing roller is installed on described support, and described support is arranged on described track, and described support can be along described orbital motion under the promotion of described push rod.Therefore, described push rod and support can rotate around the central axis of described disk 6, and then the described sizing roller 5 being connected on described support can rotate around the central axis of described disk 6.Such configuration does not weaken the structural strength of described pedestal, guarantees the service life of described apparatus for bending.
Advantageously, described disk 6 can be configured to rotate around the central axis of self; Or described disk 6 keeps maintaining static with respect to described pedestal 1.
Advantageously, described sizing roller 5 can be configured to rotate around the central axis of self; Or described sizing roller 5 keeps maintaining static with respect to described handle bar 4.
Advantageously, described block roller 2 can be configured to rotate around the central axis of self; Or described block roller 2 keeps maintaining static with respect to described pedestal 1.
Preferably, the mode that described block roller 2 and/or profiled part 60 are threaded connection is connected to described pedestal 1.
According to second specific embodiment of apparatus for bending of the present utility model, the net shape 81 that described apparatus for bending is U-shaped by the part bending to be bent of described rhabodoid 8.For this reason, described profiled part comprises square template or rectangle template, described square template or rectangle template upwards have groove in its week, and described groove forms the profile of the net shape complementation of described profiled part and part to be bent described rhabodoid 8; Described afterburning parts also comprise handle bar; Described simulation follow-on subassembly comprises sizing roller, U-lag hole and long straight trough hole, and wherein, described U-lag hole is arranged in described pedestal 1, and described long straight trough hole is arranged in described handle bar; The first end of described sizing roller is arranged in described long straight trough hole, and can be freely movable in long straight trough hole; The second end of described sizing roller is arranged in described U-lag hole, and can be freely movable in U-lag hole; Described sizing roller can be done around described square template the motion of U-shaped track, and described rhabodoid 8 is applied to active force, makes the described rhabodoid 8 described profile 61 that reclines be bent into the net shape 81 of described U-shaped.
Be understandable that, in the second embodiment of described apparatus for bending, described afterburning parts also can be implemented modification by three in the first embodiment of described apparatus for bending and implement.U-lag hole can be U-rail.Above-mentioned long straight trough hole can be arranged in support.
Advantageously, the right angle of described square template is rounded.This bending operation to hollow body is favourable, and the described body by bending is not easy breakage.
According to the 3rd specific embodiment of apparatus for bending of the present utility model, the net shape 81 that described apparatus for bending is regular polygon by the part bending to be bent of described rhabodoid 8.For this reason, described profiled part comprises regular polygon template, and described regular polygon template upwards has groove in its week, and described groove forms the profile of the net shape complementation of described profiled part and part to be bent described rhabodoid 8; Described afterburning parts also comprise handle bar; Described simulation follow-on subassembly comprises sizing roller, regular polygon slotted eye and long straight trough hole, and wherein, described regular polygon slotted eye is arranged in described pedestal 1, and described long straight trough hole is arranged in described handle bar; The first end of described sizing roller is arranged in described long straight trough hole, and can be freely movable in long straight trough hole; The second end of described sizing roller is arranged in described regular polygon slotted eye, and can be freely movable in regular polygon slotted eye; Described sizing roller can be done around described regular polygon template the motion of regular polygon track, and described rhabodoid 8 is applied to active force, makes the described rhabodoid 8 described profile that reclines be bent into the net shape 81 of described regular polygon.
Be understandable that, in the 3rd embodiment of described apparatus for bending, described afterburning parts also can be implemented modification by three in the first embodiment of described apparatus for bending and implement.Regular polygon slotted eye can be regular polygon track.Above-mentioned long straight trough hole can be arranged in support.
According to the instruction of the main embodiment of the apparatus for bending of above-mentioned rhabodoid and three specific embodiment, it will be understood by those skilled in the art that as long as change the shape of template and conduit and just described rhabodoid can be bent into the shape of various hope.
According to specific embodiment of the utility model, the mode of operation of the apparatus for bending of rhabodoid of the present utility model is as follows:
As shown in Figure 1, pedestal 1 is fixed on erecting bed, block roller 2 is fixed on described pedestal 1, and the cylinder of described block roller 2 is along being circumferentially the circular arc cast of depression, to coordinate the shape of oil pipe.Disk 6 is also installed on described pedestal 1, and with block roller 2 setting straggly, interval is shaped as suitable to hold oil pipe therebetween.Disk 6 is rotatable along its axis.Rear tight bolt 3 is connected in described disk 6 on described pedestal 1 with described handle bar 4.Near one end that described handle bar 4 is connected with described disk 6, be provided with sizing roller 5, described sizing roller 5 is advisable to hold oil pipe at interval therebetween with described disk 6.Described block roller 2, described disk 6 are circumferentially respectively provided with the cast groove of a circle radial depressions with the cylinder edge of described sizing roller 5, to coordinate oil pipe shape.The utility model can be used for the oil pipe bending of φ 12mm.
The oil pipe of φ 12mm of take is example, and handle bar 4 is pulled near block roller 2, and oil pipe one end of φ 12mm is filled in the interval between block roller 2, sizing roller 5 and disk 6, at the bending part of Len req, thereby pulls the bending that handle bar 4 is realized oil pipe 8.Then by being rotated further handle bar 4, make to treat that dogleg section, around disk 6 bendings, reaches the object of bending.
Described sizing roller 5 is tightened on described handle bar 4 by nut 7.Described nut is GB6170-2000 hex nut M12.

Claims (10)

1. the device of oil pipe bending, it comprises: pedestal (1), block roller (2) and profiled part (60), and described block roller (2) and profiled part (60) are separated by such distance and are arranged in described pedestal (1) above: rhabodoid (8) can be plugged between described block roller (2) and profiled part (60);
and the first end of the part to be bent of described rhabodoid (8) is against described block roller (2), and applies active force and make the part to be bent of described rhabodoid (8) around described profiled part (60) brake forming;
it is characterized in that: described apparatus for bending also comprises afterburning parts (40); And described profiled part (60) has the profile (61) complementary with the net shape (81) of the part to be bent of described rhabodoid (8); Described afterburning parts (40) comprise simulation follow-on subassembly (401), the movement locus line of described simulation follow-on subassembly (401) to described net shape (81) similar geometrically, and described afterburning parts (40) apply active force according to described movement locus line to described rhabodoid (8), make described rhabodoid (8) the described profile (61) that reclines be bent into described net shape (81).
2. according to apparatus for bending claimed in claim 1, it is characterized in that: the net shape (81) of the part to be bent of described rhabodoid (8) is circular arc; Described profiled part (60) comprises disk (6), described disk (6) upwards has annular groove in its week, and described annular groove forms the complementary profile (61) of net shape (81) of described profiled part (60) and part to be bent described rhabodoid (8); Described simulation follow-on subassembly (401) comprises sizing roller (5), described sizing roller (5) can circle around the central axis of described disk (6), and described rhabodoid (8) is applied to active force, make described rhabodoid (8) the described profile (61) that reclines be bent into the net shape (81) of described circular arc.
3. according to apparatus for bending claimed in claim 2, it is characterized in that: described afterburning parts (40) also comprise handle bar (4), described handle bar (4) has the first pivot hole (41) at its first end; Described disk (6) has centre bore (62); Rear tight bolt (3) is connected to described handle bar (4) and described disk (6) on described pedestal (1) through described pivot hole (41), described centre bore (62); Described sizing roller (5) is connected on described handle bar (4) by the second pivot hole (42) in described handle bar (4); On described handle bar (4), can rotate around the central axis of described disk (6), thereby the described sizing roller (5) connecting on it can rotate around the central axis of described disk (6).
4. according to apparatus for bending claimed in claim 3, it is characterized in that: described disk (6) can rotate around the central axis of self; Or described disk (6) keeps maintaining static with respect to described pedestal (1).
5. according to apparatus for bending claimed in claim 3, it is characterized in that: described sizing roller (5) can rotate around the central axis of self; Or described sizing roller (5) keeps maintaining static with respect to described handle bar (4).
6. apparatus for bending according to described in any one in claim 1 to 5, is characterized in that: described block roller (2) can rotate around the central axis of self; Or described block roller (2) keeps maintaining static with respect to described pedestal (1).
7. according to apparatus for bending claimed in claim 1, it is characterized in that: the net shape of the part to be bent of described rhabodoid (8) is U-shaped; Described profiled part comprises square template, and described square template upwards has groove in its week, and described groove forms the profile of the net shape complementation of described profiled part and part to be bent described rhabodoid (8); Described afterburning parts also comprise handle bar; Described simulation follow-on subassembly comprises sizing roller, U-lag hole and long straight trough hole, and wherein, described U-lag hole is arranged in described pedestal (1), and described long straight trough hole is arranged in described handle bar; The first end of described sizing roller is arranged in described long straight trough hole, and can be freely movable in long straight trough hole; The second end of described sizing roller is arranged in described U-lag hole, and can be freely movable in U-lag hole;
described sizing roller can be done around described square template the motion of U-shaped track, and described rhabodoid (8) is applied to active force, makes described rhabodoid (8) the described profile (61) that reclines be bent into the net shape (81) of described U-shaped.
8. according to apparatus for bending claimed in claim 7, it is characterized in that: the right angle of described square template is rounded.
9. according to apparatus for bending claimed in claim 1, it is characterized in that: the net shape of the part to be bent of described rhabodoid (8) is regular polygon; Described profiled part comprises regular polygon template, and described regular polygon template upwards has groove in its week, and described groove forms the profile of the net shape complementation of described profiled part and part to be bent described rhabodoid (8); Described afterburning parts also comprise handle bar; Described simulation follow-on subassembly comprises sizing roller, regular polygon slotted eye and long straight trough hole, and wherein, described regular polygon slotted eye is arranged in described pedestal (1), and described long straight trough hole is arranged in described handle bar; The first end of described sizing roller is arranged in described long straight trough hole, and can be freely movable in long straight trough hole; The second end of described sizing roller is arranged in described regular polygon slotted eye, and can be freely movable in regular polygon slotted eye;
described sizing roller can be done around described regular polygon template the motion of regular polygon track, and described rhabodoid (8) is applied to active force, makes described rhabodoid (8) the described profile that reclines be bent into the net shape (81) of described regular polygon.
10. according to apparatus for bending claimed in claim 1, it is characterized in that: the mode that described block roller (2) and/or profiled part (60) are threaded connection is connected to described pedestal (1).
CN201320734611.XU 2013-11-20 2013-11-20 The device of oil pipe bending Active CN203944685U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104985577A (en) * 2015-06-09 2015-10-21 国家电网公司 Fitter's toolkit for power maintenance
CN107824649A (en) * 2017-11-01 2018-03-23 北京动力机械研究所 Manual swan neck system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104985577A (en) * 2015-06-09 2015-10-21 国家电网公司 Fitter's toolkit for power maintenance
CN107824649A (en) * 2017-11-01 2018-03-23 北京动力机械研究所 Manual swan neck system

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