CN207603077U - A kind of aerial lift device with insulated arm arm frame telescopic mechanism - Google Patents
A kind of aerial lift device with insulated arm arm frame telescopic mechanism Download PDFInfo
- Publication number
- CN207603077U CN207603077U CN201721638770.4U CN201721638770U CN207603077U CN 207603077 U CN207603077 U CN 207603077U CN 201721638770 U CN201721638770 U CN 201721638770U CN 207603077 U CN207603077 U CN 207603077U
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- arm
- sprocket support
- telescopic oil
- side slide
- 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
- 230000007246 mechanism Effects 0.000 title claims abstract description 28
- 239000002184 metal Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000009413 insulation Methods 0.000 description 7
- 239000004744 fabric Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model discloses a kind of aerial lift device with insulated arm arm frame telescopic mechanisms, the telescoping mechanism includes telescopic oil cylinder, sprocket wheel, sprocket support, chain and side slide, the sprocket support includes the left sprocket support and the right sprocket support that are symmetrically arranged in telescopic oil cylinder both sides, the left sprocket support and right sprocket support one end are sleeved on by connecting supporting block on the cylinder barrel of telescopic oil cylinder, and the other end is connected by the cylinder rod of the first axis pin and telescopic oil cylinder;Four sprocket wheels are mounted on the both ends of left sprocket support and right sprocket support by axis pin respectively, and two groups of closed chains are separately mounted on the sprocket wheel of telescopic oil cylinder both sides;The side slide is mounted on left sprocket support and right sprocket support both ends, and the side slide shares axis pin with sprocket wheel.The structure of the utility model is stable, reliability is high, and insulating telescopic arm can be made to stretch out the distance of twice of oil cylinder stroke, metalwork space length shared in insulating telescopic arm is effectively shortened, improves the effective length of insulating segment.
Description
Technical field
The utility model is related to a kind of aerial lift device with insulated arm arm frame telescopic mechanisms, belong to technical field of engineering machinery.
Background technology
Present national grid, which proposes, does not power off job requirements, distribution voltage in more than 10KV, transmission tower height ten meters with
On, it is very stringent to being in the insulating properties requirement of aerial lift device with insulated arm of medial potential working, and determine aerial lift device with insulated arm insulating properties
The leading indicator of energy is exactly effective insulated lengths of insulation arm.Change the effective length that telescoping mechanism ensures insulating telescopic arm, it is right
Ensure that the insulation performance of aerial lift device with insulated arm vehicle is of great significance to.
As shown in Figure 5, Figure 6, the schematic diagram of existing aerial lift device with insulated arm arm frame telescopic mechanism, wherein oil cylinder 1a cylinder rods with it is basic
Arm Ca tail portions are hinged, and cylinder barrel end is hinged with insulating telescopic arm Da, and insulating telescopic arm Da is flexible with one piece of cylinder barrel, and metalwork is exhausted
Space length in edge telescopic arm is always the length of cylinder barrel.
This boom frame telescopic structure needs to increase insulating telescopic arm and base to increase effective insulation segment length of insulation arm
The lap of splice of this arm or the leakage part for extending the relatively basic arm of telescopic arm, arm support weight will be caused by increasing the lap of splice
Increase, and then vehicle tilting moment are unfavorable for the stabilization of vehicle;Extend the leakage part meeting of the relatively basic arm of insulating telescopic arm
Make entire arm body elongated, and then influence vehicle collection length, and the natural length stretched out is long when reducing altitude hot-line operation
The regulated quantity of amplitude and short transverse makes vehicle adaptability be deteriorated.
Therefore, it is necessary to develop a kind of arm frame telescopic mechanism of aerial lift device with insulated arm, effective insulation of telescopic arm can be both increased
Length, and be conducive to the space layout of complete vehicle structure.
Utility model content
Technical problem to be solved in the utility model is the defects of overcoming the prior art, provides a kind of aerial lift device with insulated arm arm
Frame telescoping mechanism can realize the growth of the effective insulating segment of aerial lift device with insulated arm telescopic arm, and not influence the space structure cloth of vehicle
It puts and operation adaptability.
In order to solve the above technical problems, the utility model provides a kind of aerial lift device with insulated arm arm frame telescopic mechanism, it is characterized in that,
The telescoping mechanism includes telescopic oil cylinder, sprocket wheel, sprocket support, chain and side slide, and the sprocket support includes symmetrical cloth
The left sprocket support in telescopic oil cylinder both sides and right sprocket support are put, the left sprocket support and right sprocket support one end pass through company
It connects supporting block to be sleeved on the cylinder barrel of telescopic oil cylinder, the other end is connected by the cylinder rod of the first axis pin and telescopic oil cylinder;Four sprocket wheels
The both ends of left sprocket support and right sprocket support are mounted on by axis pin respectively, two groups of closed chains are separately mounted to telescopic oil cylinder
On the sprocket wheel of both sides;The side slide is mounted on left sprocket support and right sprocket support both ends, the side slide are shared with sprocket wheel
Axis pin.
Further, the closed chain includes the first chain and the second chain, first chain and the second chain
One end is equipped with the first connector, and first connector is fixed on by the second axis pin on telescopic oil cylinder cylinder barrel bearing;It is described
The other end of first chain and the second chain is equipped with the second connector and third connector, and second connector and third connect
Fitting is connected by the first bolt, adjusts the tensioning of the chain degree.
Further, the end of first chain and the second chain is connected by chain card with connector;Second pin
Axis both ends are equipped with the axial freedom that baffle ring limits the second axis pin;Second connector is equipped with axis hole, makes the second connector
It is connect by third axis pin with insulating telescopic arm.
Further, the supporting block includes upper supporting block and lower supporting block, and upper supporting block and lower supporting block are oily with stretching
The arc surface diameter of cylinder cooperation is more than telescopic oil cylinder cylinder barrel outer diameter;Top shoe, sliding block are separately fixed at by the second bolt
In supporting block, lower supporting block, the outer diameter phase of top shoe, the arc surface diameter that sliding block coordinates with telescopic oil cylinder and telescopic oil cylinder
Together, left sprocket support and right sprocket support is supported to be slided along the cylinder barrel of telescopic oil cylinder.
Further, the axis pin of sprocket wheel is semiaxis at the cylinder barrel of the telescopic oil cylinder, and the semiaxis is distributed in telescopic oil cylinder
Each side one, the semiaxis is equipped with snap-gauge;The axis pin of sprocket wheel at the cylinder rod of the telescopic oil cylinder be the first axis pin, institute
The first axis pin to be stated as an axis, is set on axis there are two limiting blind hole, two blind holes are aligned with two threaded holes of cylinder rod end,
The rotary freedom and axial freedom of two blind holes limitation axis are blocked by screw.
Further, the side slide is equipped with axis hole, is symmetrically arranged along telescopic oil cylinder axis direction;The side slide
Including the first side slide and the second side slide, second side slide is through on semiaxis, and is passed through card slot and be stuck in left and right sprocket wheel branch
On the snap-gauge of frame and semiaxis, the rotary freedom of semiaxis and the second side slide along semiaxis is limited;Two the second side slide compositions
It is whole identical with the inner width size of metal basic arm along telescopic oil cylinder radial width size, limit semiaxis and the second side slide
Along the axial freedom of half axis direction;First side slide is through the first axis pin both sides, and first side slide is equipped with card slot, is stuck in
On the block of sprocket support, rotary freedom of first side slide along the first axis pin is limited;What two the first side slides formed
It is whole identical with the inner width size of insulating telescopic arm along telescopic oil cylinder radial width size, the first side slide is limited along the first pin
The axial freedom of axis direction.
The advantageous effect that the utility model is reached:The utility model is arranged symmetrically chain wheeling supporting frame, chain in oil cylinder both sides
Wheel, sliding block are mounted on chain wheeling supporting frame, equipped with chain on sprocket wheel, when oil cylinder stretches out, and chain wheeling supporting frame and installed part thereon
Cylinder rod is followed to stretch out together, since chain one end is fixed on cylinder tube, the other end is connected on insulating telescopic arm, and cylinder rod is stretched out
While chain rotated around sprocket wheel, insulating telescopic arm is driven to stretch out, the outreach for realizing insulating telescopic arm is oil cylinder stroke
Twice, in the case where insulating telescopic arm stretches out similary length, the utility model reduces metalwork in insulating telescopic arm
Space length, the space occupied length is about the half of existing arm frame telescopic mechanism, and do not interfere with complete vehicle structure arrangement and
Vehicle adaptability.
Description of the drawings
Attached drawing 1 is the decomposition diagram of the utility model aerial lift device with insulated arm arm frame telescopic mechanism;
Attached drawing 2 is the axonometric schematic diagram of the utility model aerial lift device with insulated arm arm frame telescopic mechanism;
Attached drawing 3 is the positive angle schematic diagram of the utility model aerial lift device with insulated arm arm frame telescopic mechanism;
Attached drawing 4 is the upward view of the utility model aerial lift device with insulated arm arm frame telescopic mechanism;
Contraction state schematic diagram of the attached drawing 5 for an embodiment of existing aerial lift device with insulated arm arm frame telescopic mechanism;
Stretching status diagram of the attached drawing 6 for an embodiment of existing aerial lift device with insulated arm arm frame telescopic mechanism;
Stretching status diagram of the attached drawing 7 for an embodiment of the utility model aerial lift device with insulated arm arm frame telescopic mechanism;
Attached drawing 8 is the stretching status diagram of the utility model aerial lift device with insulated arm arm frame telescopic mechanism.
In Fig. 1:1st, telescopic oil cylinder;2nd, top shoe;3rd, upper supporting block;4th, the second connector;5th, the first chain;6th, the second pin
Axis;7th, right sprocket support;8th, sprocket wheel;9th, the first side slide;10th, screw;11st, the first axis pin;12nd, baffle ring;13rd, the first connection
Part;14th, the second chain;15th, third axis pin;16th, the first bolt;17th, third connector;18th, left sprocket support;19th, the second spiral shell
Bolt;20th, the second side slide;21st, semiaxis;22nd, lower supporting block;23rd, sliding block.
In Fig. 4:Left half side A;Right half side B.
In Fig. 7:Metal arm C;Insulating telescopic arm D.
Specific embodiment
The utility model is further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating this
The technical solution of utility model, and cannot the scope of protection of the utility model be limited with this.
As shown in Figures 1 to 8, a kind of aerial lift device with insulated arm arm frame telescopic mechanism, the telescoping mechanism include telescopic oil cylinder 1, chain
Wheel 8, sprocket support, chain and side slide, the sprocket support include the left sprocket wheel being symmetrically arranged in 1 both sides of telescopic oil cylinder
Stent 18 and right sprocket support 7, the left sprocket support 18 and 7 one end of right sprocket support are sleeved on flexible oil by connecting supporting block
On the cylinder barrel of cylinder 1, the other end is connect by the first axis pin 11 with the cylinder rod of telescopic oil cylinder 1;Four sprocket wheels 8 are pacified respectively by axis pin
Mounted in the both ends of left sprocket support 18 and right sprocket support 7, two groups of closed chains are separately mounted to the sprocket wheel of 1 both sides of telescopic oil cylinder
On 8;The side slide is mounted on 7 both ends of left sprocket support 18 and right sprocket support, and the side slide shares axis pin with sprocket wheel 8.
The closed chain includes the first chain 5 and the second chain 14, one end of 5 and second chain 14 of the first chain
The first connector 13 is equipped with, first connector 13 is fixed on by the second axis pin 6 on 1 cylinder barrel bearing of telescopic oil cylinder;Institute
The other end for stating the first chain 5 and the second chain 14 is equipped with the second connector 4 and third connector 17, second connector
4 are connected with third connector 17 by the first bolt 16, adjust the tensioning of the chain degree.
The end of first chain, 5 and second chain 14 is connected by chain card with connector;Second axis pin, 6 both ends
The axial freedom of the second axis pin 6 is limited equipped with baffle ring 12;Second connector 4 is equipped with axis hole, makes the second connector 4 logical
Third axis pin 15 is crossed to connect with insulating telescopic arm D.
The supporting block includes upper supporting block 3 and lower supporting block 22, upper supporting block 3 and lower supporting block 22 and telescopic oil cylinder 1
The arc surface diameter of cooperation is more than 1 cylinder barrel outer diameter of telescopic oil cylinder;Top shoe 2, sliding block 23 are fixed respectively by the second bolt 19
In upper supporting block 3, lower supporting block 22, top shoe 2, sliding block 23 and the arc surface diameter that telescopic oil cylinder 1 coordinates and flexible oil
The outer diameter of cylinder 1 is identical, and left sprocket support 18 and right sprocket support 7 is supported to be slided along the cylinder barrel of telescopic oil cylinder 1.
The axis pin of sprocket wheel 8 is semiaxis 21 at the cylinder barrel of the telescopic oil cylinder 1, and it is left that the semiaxis 21 is distributed in telescopic oil cylinder 1
Right each one of both sides, the semiaxis 21 are equipped with snap-gauge, ensure that semiaxis 21 is not interfered with cylinder barrel outer rim;The cylinder of the telescopic oil cylinder 1
The axis pin of sprocket wheel 8 at bar is the first axis pin 11, and first axis pin 11 is an axis, is set on axis there are two limiting blind hole,
Two blind holes are aligned with two threaded holes of cylinder rod end, by screw 10 block two blind holes limit axis rotary freedom and
Axial freedom.
The side slide is equipped with axis hole, is symmetrically arranged along 1 axis direction of telescopic oil cylinder;The side slide includes first
9 and second side slide 20 of side slide, second side slide 20 are through on semiaxis 21, and are passed through card slot and be stuck in left and right sprocket wheel branch
On the snap-gauge of frame and semiaxis 21, rotary freedom of 21 and second side slide 20 of semiaxis along semiaxis 21 is limited;Two the second sides
Sliding block 20 forms whole identical with the inner width size of metal basic arm C along 1 radial width size of telescopic oil cylinder, limits semiaxis
21 and second axial freedom of the side slide 20 along 21 direction of semiaxis;First side slide 9 is through 11 both sides of the first axis pin, and described
One side slide 9 be equipped with card slot, be stuck on the block of sprocket support, limit the first side slide 9 along the first axis pin 11 rotation from
By spending;Two the first side slides 9 form whole along 1 radial width size of telescopic oil cylinder and the inner width size of insulating telescopic arm D
It is identical, limit axial freedom of first side slide 9 along 11 direction of the first axis pin.First side slide 9 and the second side slide 20
Both telescopic oil cylinder 1, left sprocket support 18 and right sprocket support 7 had been supported, has in turn ensured that insulating telescopic arm D's is smoothly flexible.
According to shown in Fig. 6 and Fig. 7, in metal arm, insulating telescopic arm lengths size is identical and full reduced, the Quan Shen of flexible arm assembly
In the case that length dimension is identical, effective insulation segment length L in the utility model Fig. 7 embodiments is about to have in Fig. 6 embodiments
Twice of insulating segment La is imitated, is effectively guaranteed the insulation performance of aerial lift device with insulated arm.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, under the premise of the utility model technical principle is not departed from, several improvement and deformation can also be made, these change
The scope of protection of the utility model is also should be regarded as into deformation.
Claims (6)
1. a kind of aerial lift device with insulated arm arm frame telescopic mechanism, it is characterized in that, which includes telescopic oil cylinder(1), sprocket wheel(8)、
Sprocket support, chain and side slide, the sprocket support include being symmetrically arranged in telescopic oil cylinder(1)The left sprocket wheel branch of both sides
Frame(18)With right sprocket support(7), the left sprocket support(18)With right sprocket support(7)One end is sleeved on by connecting supporting block
Telescopic oil cylinder(1)Cylinder barrel on, the other end passes through the first axis pin(11)With telescopic oil cylinder(1)Cylinder rod connection;Four sprocket wheels(8)
Left sprocket support is mounted on by axis pin respectively(18)With right sprocket support(7)Both ends, two groups of closed chains are separately mounted to
Telescopic oil cylinder(1)The sprocket wheel of both sides(8)On;The side slide is mounted on left sprocket support(18)With right sprocket support(7)Both ends,
The side slide and sprocket wheel(8)Share axis pin.
2. a kind of aerial lift device with insulated arm arm frame telescopic mechanism according to claim 1, it is characterized in that, the closed chain includes
First chain(5)With the second chain(14), first chain(5)With the second chain(14)One end be equipped with the first connector
(13), first connector(13)Pass through the second axis pin(6)It is fixed on telescopic oil cylinder(1)On cylinder barrel bearing;First chain
Item(5)With the second chain(14)The other end be equipped with the second connector(4)With third connector(17), second connector
(4)With third connector(17)Pass through the first bolt(16)It is connected, adjusts the tensioning of the chain degree.
3. a kind of aerial lift device with insulated arm arm frame telescopic mechanism according to claim 2, it is characterized in that, first chain(5)
With the second chain(14)End be connected by chain card with connector;Second axis pin(6)Both ends are equipped with baffle ring(12)Limitation
Second axis pin(6)Axial freedom;Second connector(4)Axis hole is equipped with, makes the second connector(4)Pass through third pin
Axis(15)With insulating telescopic arm(D)Connection.
4. a kind of aerial lift device with insulated arm arm frame telescopic mechanism according to claim 1, it is characterized in that, the supporting block includes upper
Supporting block(3)With lower supporting block(22), upper supporting block(3)With lower supporting block(22)With telescopic oil cylinder(1)The arc surface of cooperation is straight
Diameter is more than telescopic oil cylinder(1)Cylinder barrel outer diameter;Top shoe(2), sliding block(23)Pass through the second bolt(19)It is separately fixed at branch
Bracer(3), lower supporting block(22)On, top shoe(2), sliding block(23)With telescopic oil cylinder(1)The arc surface diameter of cooperation is with stretching
Contracting oil cylinder(1)Outer diameter it is identical, support left sprocket support(18)With right sprocket support(7)Along telescopic oil cylinder(1)Cylinder barrel slide.
5. a kind of aerial lift device with insulated arm arm frame telescopic mechanism according to claim 1, it is characterized in that, the telescopic oil cylinder(1)
Cylinder barrel at sprocket wheel(8)Axis pin be semiaxis(21), the semiaxis(21)It is distributed in telescopic oil cylinder(1)Each side one,
The semiaxis(21)Equipped with snap-gauge;The telescopic oil cylinder(1)Cylinder rod at sprocket wheel(8)Axis pin be the first axis pin(11), institute
State the first axis pin(11)For an axis, set that there are two limiting blind hole, two blind holes and two threaded holes of cylinder rod end on axis
Alignment, passes through screw(10)Block the rotary freedom and axial freedom of two blind hole limitation axis.
6. a kind of aerial lift device with insulated arm arm frame telescopic mechanism according to claim 5, it is characterized in that, the side slide is equipped with axis
Hole, along telescopic oil cylinder(1)Axis direction is symmetrically arranged;The side slide includes the first side slide(9)With the second side slide
(20), second side slide(20)It is through semiaxis(21)On, and pass through card slot and be stuck in left and right sprocket support and semiaxis(21)'s
On snap-gauge, semiaxis is limited(21)And second side slide(20)Along semiaxis(21)Rotary freedom;Two the second side slides
(20)Composition it is whole along telescopic oil cylinder(1)Radial width size and metal basic arm(C)Inner width size it is identical, limit half
Axis(21)And second side slide(20)Along semiaxis(21)The axial freedom in direction;First side slide(9)It is through the first axis pin
(11)Both sides, first side slide(9)It equipped with card slot, is stuck on the block of sprocket support, limits the first side slide(9)Edge
First axis pin(11)Rotary freedom;Two the first side slides(9)Composition it is whole along telescopic oil cylinder(1)Radial width size
With insulating telescopic arm(D)Inner width size it is identical, limit the first side slide(9)Along the first axis pin(11)Direction it is axially free
Degree.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201721638770.4U CN207603077U (en) | 2017-11-30 | 2017-11-30 | A kind of aerial lift device with insulated arm arm frame telescopic mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201721638770.4U CN207603077U (en) | 2017-11-30 | 2017-11-30 | A kind of aerial lift device with insulated arm arm frame telescopic mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
CN207603077U true CN207603077U (en) | 2018-07-10 |
Family
ID=62761715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201721638770.4U Active CN207603077U (en) | 2017-11-30 | 2017-11-30 | A kind of aerial lift device with insulated arm arm frame telescopic mechanism |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN207603077U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108063390A (en) * | 2017-11-30 | 2018-05-22 | 徐州徐工随车起重机有限公司 | A kind of aerial lift device with insulated arm arm frame telescopic mechanism |
CN108999579A (en) * | 2018-09-25 | 2018-12-14 | 惠博普环境工程技术有限公司 | Intelligent oil and gas well operation integrated platform |
-
2017
- 2017-11-30 CN CN201721638770.4U patent/CN207603077U/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108063390A (en) * | 2017-11-30 | 2018-05-22 | 徐州徐工随车起重机有限公司 | A kind of aerial lift device with insulated arm arm frame telescopic mechanism |
CN108999579A (en) * | 2018-09-25 | 2018-12-14 | 惠博普环境工程技术有限公司 | Intelligent oil and gas well operation integrated platform |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN207603077U (en) | A kind of aerial lift device with insulated arm arm frame telescopic mechanism | |
CN204823900U (en) | Hoist arm that stretches out and draws back | |
CN105110213A (en) | Crane provided with counterweight balance mechanism adopting dead weight of hoisted object as well as crane transformation scheme | |
CN105271010A (en) | Self-climbing crane | |
CN101575075A (en) | Truck crane and multisection synchronous telescopic boom device thereof | |
CN207920201U (en) | A kind of anti-snake climbing device for driving away of steel tower | |
CN104828754A (en) | Crank arm type hydraulic aerial cage leveling device | |
CN108063390A (en) | A kind of aerial lift device with insulated arm arm frame telescopic mechanism | |
CN207579452U (en) | A kind of novel damping castor | |
CN211809705U (en) | Industrial gas cylinder transport trolley | |
CN206076835U (en) | A kind of tower crane for changing insulator chain on strain rod tower | |
CN102126682A (en) | Single cylinder synchronous expansion and contraction device with multiple sets of inhaul cables for lorry-mounted crane | |
CN107322439A (en) | A kind of high-efficient rust-removing wire-crossing wheel | |
CN202766142U (en) | Gantry type hydraulic folding crane | |
CN205346688U (en) | Double -cylinder area two sets of cable telescopic jib (boom) for lorry crane | |
CN215055412U (en) | Tower crane concrete material feeding unit | |
CN104340931A (en) | High-altitude operation and multiple-section telescopic boom thereof | |
CN209209743U (en) | A kind of passive towed foldable bracket roller group | |
CN208619873U (en) | A kind of petroleum connecting pipe being conveniently adjusted height | |
CN102774790B (en) | Telescopic boom and engineering machinery | |
CN202465133U (en) | Boom telescoping mechanism with internal pull cables and internal pipeline | |
CN218058229U (en) | Unsynchronized telescoping device of formula of stretching directly arm | |
CN207744497U (en) | A kind of Landscape River movable green belt | |
CN207393936U (en) | A kind of Novel anti-drop piston rod | |
CN204675688U (en) | A kind of telescoping mechanism |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |