CN109763488A - A kind of guard rail breakdown van pile pulling device - Google Patents
A kind of guard rail breakdown van pile pulling device Download PDFInfo
- Publication number
- CN109763488A CN109763488A CN201910083418.6A CN201910083418A CN109763488A CN 109763488 A CN109763488 A CN 109763488A CN 201910083418 A CN201910083418 A CN 201910083418A CN 109763488 A CN109763488 A CN 109763488A
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- pile
- pile pulling
- guard rail
- hydraulic cylinder
- dock leveler
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a kind of guard rail breakdown van pile pulling devices, more particularly to pile pulling device field, including mounting plate, the mounting plate is equipped with adjustable plate fixation hole, pile pulling DOCK LEVELER is equipped on front side of the mounting plate, pile pulling DOCK LEVELER two sides are equipped with hydraulic cylinder, two hydraulic cylinder bottom ends are fixedly connected with bottom plate, pile pulling DOCK LEVELER bottom is fixedly connected with pile pulling pin, pile pulling pin bottom end, which runs through bottom plate and extends to bottom base plate, is fixedly connected with pile chuck, and the pile chuck includes fixed interior bar and expansion-head.Apparatus of the present invention design more human nature, efficiently, double oil cylinders, pile pulling power are about 10 tons, have the function of adjusting speed, it rises and pulls out the later period and more quickly extract, it saves the more time, similar product uses split type pile-drawing machine at present, and the present invention then combines the lifting beater head device of guard rail breakdown van to carry out lifting operation to pile-drawing machine, operation is simpler, takes less time.
Description
Technical field
The present invention relates to pile pulling device technical fields, it is more particularly related to which a kind of guard rail breakdown van pile pulling fills
It sets.
Background technique
Common pile-drawing machine self weight is all bigger at present, needs mechanical engagement operation, and the invention device is to improve pile-drawing machine to rise
Hang, transport, operate it is portable.
The defect and deficiency of the prior art: 1. since pile-drawing machine itself is than heavier, so during transportation cannot be pulling out
Stake device is mounted in lifting tup fixed plate；
2. needing repetitive operation one stake is extracted could completely due to the limitation of maximum pile pulling height；
3. if needing to cut off a part manually, capable of just continuing to execute pile pulling operation stake terrain clearance is excessively high.
For above situation, the invention patent provides a kind of novel pile pulling device scheme, and Shaped steel recovery can be allowed sharp again
With reducing the disposable of fashioned iron, reduce construction cost.
Summary of the invention
In order to overcome the drawbacks described above of the prior art, the embodiment of the present invention provides a kind of guard rail breakdown van pile pulling device,
It is gone up and down on beater head device by the way that whole device is mounted on guard rail breakdown van, lifting is completed by lifting beater head device operation and is made
Industry, when work, hydraulic cylinder drives pile pulling pin and pile chuck to protrude into inside pile crown, and pile chuck clamps pile crown, hydraulic cylinder band
Dynamic pile chuck forces press to move up, and is allowed to that pile crown is driven to jack a distance upwards, and lifting beater head device is cooperated to sling, and operates
It is simpler, it takes less time, each pile chuck all protrudes into identical position inside pile crown, and that no setting is required is very long for pile pulling pin, i.e.,
The piecewise extraction that pile crown can be achieved reduces the disposable of fashioned iron without cutting bar-shaped, reduces construction cost.
To achieve the above object, the invention provides the following technical scheme: a kind of guard rail breakdown van pile pulling device, including installation
Plate, the mounting plate are equipped with adjustable plate fixation hole, are equipped with pile pulling DOCK LEVELER, the pile pulling height on front side of the mounting plate
Adjustable plate two sides are equipped with hydraulic cylinder, and two hydraulic cylinder bottom ends are fixedly connected with bottom plate, the pile pulling DOCK LEVELER
Bottom is fixedly connected with pile pulling pin, and pile pulling pin bottom end, which runs through bottom plate and extends to bottom base plate, is fixedly connected with pile chuck, institute
It states pile chuck to act on inside pile crown and for pulling out pile clip, the pile chuck includes fixed interior bar and expansion-head；
It is fixedly connected with air bag protection mechanism on the outside of the hydraulic cylinder, the air bag protection mechanism is far from hydraulic cylinder
One side wall is equipped with solar panels.
In a preferred embodiment, the adjustable plate fixation hole is set as multiple and homogeneous vertical is distributed in installation
On plate, pile pulling DOCK LEVELER section is set as L shape, and the pile pulling DOCK LEVELER rear wall is equipped with solid with adjustable plate
Determine the corresponding through-hole in hole, screw is equipped with outside the through-hole, the pile pulling DOCK LEVELER and mounting plate are pacified by screw
On guard rail breakdown van lifting beater head device.
In a preferred embodiment, the expansion-head is set as multiple and is uniformly distributed on the outside of fixed interior bar,
The expansion-head is fixedly connected with fixed interior bar, the fixed interior bar and pile pulling pin integrated molding.
In a preferred embodiment, the fixed interior bar cross section is set as ellipse, the expansion-head outer wall
It is set in the oval curved surface concentric with fixed interior bar, the fixed interior bar longitudinal section is set as isosceles trapezoid, the expansion
Head outer wall is equipped with multiple non-slip grooves, and the anti-skidding slot cross-section is set as trapezoidal.
In a preferred embodiment, the expansion-head includes memory alloy layer, preventing rubber layer and heating layer, institute
It states preventing rubber layer to be wrapped in outside memory alloy layer, the heating layer is set in the interlayer of memory alloy layer, the heating
Layer is specially heater strip.
In a preferred embodiment, the air bag protection mechanism includes U-shaped air bag, the U-shaped air bag inner wall with
Hydraulic cylinder outer wall fits, and rubber sleeve is equipped with outside the U-shaped air bag, fixes and connects with mounting plate on rear side of the hydraulic cylinder
It connects.
In a preferred embodiment, control box and aeration tank are equipped at the top of the pile pulling DOCK LEVELER, it is described
Aeration tank is set on rear side of control box, and the control box and aeration tank top are lower than U-shaped air bag top, is set inside the aeration tank
There are detonating primer and gas-forming agent, the aeration tank two sides are fixedly connected with U-shaped air bag by pipeline, are set on the hydraulic cylinder
There is crash sensor.
In a preferred embodiment, it is equipped with inside the control box and is successively arranged PLC controller, too from front to back
Sun can control device and battery, and the solar panels are connect by conducting wire with solar controller, and the solar controller is logical
It crosses conducting wire to connect with battery, the heater strip, hydraulic cylinder and crash sensor pass through conducting wire and connect with battery.
Technical effect and advantage of the invention:
1, the present invention is gone up and down on beater head device by the way that whole device is mounted on guard rail breakdown van, by going up and down beater head device
Lifting operation is completed in operation, and when work, hydraulic cylinder drives pile pulling pin and pile chuck to protrude into inside pile crown, utilizes memory alloy layer
The cold characteristic to rise of pyrocondensation, when heating wire works, memory alloy layer pyrocondensation, inside pile chuck insertion pile crown, heater strip at this time
It does not work, memory alloy layer is cold to rise, and pile chuck volume is made to become larger, and pile chuck outer wall and pile crown inner wall clamp at this time, hydraulic cylinder
It drives pile chuck that press is forced to move up, is allowed to that pile crown is driven to jack a distance upwards, and lifting beater head device is cooperated to sling, often
Secondary pile chuck all protrudes into identical position inside pile crown, and that no setting is required is very long for pile pulling pin, and the piecewise extraction of pile crown can be realized；
2, apparatus of the present invention design more human nature, efficiently, double oil cylinders, pile pulling power is about 10 tons, has the function for adjusting speed
Can, it rises and pulls out the later period and more quickly extract, save the more time, similar product uses split type pile-drawing machine at present, and this hair
Bright then to carry out lifting operation to pile-drawing machine in conjunction with the lifting beater head device of guard rail breakdown van, operation is simpler, takes less time；
3, since whole device to be mounted on guard rail breakdown van lifting beater head device, whole device is lifted to be made the present invention
With, by the way that air bag protection mechanism is arranged, when hydraulic cylinder is collided, air bag can be inflated immediately and be heaved, protection two
Hydraulic cylinder and the pile pulling DOCK LEVELER of centre, control box and aeration tank, use are more safe and secure；
4, when inside pile chuck insertion pile crown, fixed interior bar cross section is set as ellipse, fixed interior bar longitudinal section setting
For isosceles trapezoid, on the one hand facilitate the insertion of pile chuck, on the other hand will not interfere to clamp pile crown, and expansion-head outer wall is equipped with
Multiple non-slip grooves, anti-skidding slot cross-section are set as trapezoidal, and when making pile chuck that pile crown be driven to move up, clamping pile crown is stablized.
Detailed description of the invention
Fig. 1 is entirety sectional view of the invention.
Fig. 2 is overall top view of the invention.
Fig. 3 is pile chuck cross-sectional view of the invention.
Fig. 4 is pile chuck overlook explosive view of the invention.
Appended drawing reference are as follows: 1 mounting plate, 2 pile chucks, 21 fixed interior bars, 22 expansion-heads, 221 memory alloy layers, 222 rubber
Protective layer, 223 heating layers, 3 air bag protection mechanisms, 31U type air bag, 32 rubber sleeves, 4 hydraulic cylinders, 5 bottom plates, 6 pile pulling pins, 7 are adjusted
Save plate fixation hole, 8 pile crowns, 9 pile pulling DOCK LEVELERs, 10 solar panels, 11 non-slip grooves, 12 control boxes, 13 aeration tanks, 14 collisions
Sensor.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1:
A kind of guard rail breakdown van pile pulling device according to shown in Fig. 1-4, including mounting plate 1, the mounting plate 1, which is equipped with, to be adjusted
Plate fixation hole 7 is saved, pile pulling DOCK LEVELER 9 is equipped on front side of the mounting plate 1,9 two sides of pile pulling DOCK LEVELER are equipped with liquid
Compressing cylinder 4, two 4 bottom ends of hydraulic cylinder are fixedly connected with bottom plate 5, and 9 bottom of pile pulling DOCK LEVELER is fixedly connected
There is pile pulling pin 6,6 bottom end of pile pulling pin, which runs through bottom plate 5 and extends to 5 bottom of bottom plate, is fixedly connected with pile chuck 2, the pile chuck
2 act on 8 inside of pile crown and pull out for pressing from both sides pile crown 8, and the pile chuck 2 includes fixed interior bar 21 and expansion-head 22；
It is fixedly connected with air bag protection mechanism 3 on the outside of the hydraulic cylinder 4, the air bag protection mechanism 3 is far from hydraulic oil
The one side wall of cylinder 4 is equipped with solar panels 10.
Pass through.
Embodiment 2:
A kind of guard rail breakdown van pile pulling device according to figure 1, the adjustable plate fixation hole 7 are set as multiple and uniform
It is distributed on mounting plate 1 vertically, 9 section of pile pulling DOCK LEVELER is set as L shape, 9 rear side of pile pulling DOCK LEVELER
Wall is equipped with through-hole corresponding with adjustable plate fixation hole 7, is equipped with screw, the pile pulling DOCK LEVELER 9 outside the through-hole
It is mounted on guard rail breakdown van by screw with mounting plate 1 to go up and down on beater head device, by mobile pile pulling DOCK LEVELER 9
Through-hole is corresponding with the adjustable plate fixation hole 7 of different height, and pile pulling DOCK LEVELER 9 drives about 2 pile chuck by pile pulling pin 6
It is mobile, the spacing adjustment between pile chuck 2 and bottom plate 5, so that the height adjustment of pile chuck 2 is realized, to realize pile pulling height
Adjusting；
A kind of guard rail breakdown van pile pulling device according to shown in Fig. 3-4, the expansion-head 22 are set as multiple and uniformly divide
It is distributed in fixed 21 outside of interior bar, the expansion-head 22 is fixedly connected with fixed interior bar 21, the fixed interior bar 21 and pile pulling pin 6 one
Body chemical conversion type, intensity are higher；
21 cross section of fixed interior bar is set as ellipse, and 22 outer wall of expansion-head is set to same with fixed interior bar 21
In the oval curved surface of the heart, fixed 21 longitudinal section of interior bar is set as isosceles trapezoid, and 22 outer wall of expansion-head is equipped with multiple
Non-slip groove 11,11 section of non-slip groove are set as trapezoidal, and when making pile chuck 2 that pile crown 8 be driven to move up, clamping pile crown 8 is stablized；
The expansion-head 22 includes memory alloy layer 221, preventing rubber layer 222 and heating layer 223, the preventing rubber layer
222 are wrapped in outside memory alloy layer 221, and the heating layer 223 is set in the interlayer of memory alloy layer 221, the heating
Layer 223 is specially heater strip, using the cold characteristic to rise of 221 pyrocondensation of memory alloy layer, when heating wire works, and memory alloy layer 221
Pyrocondensation is inserted into inside pile crown 8 convenient for pile chuck 2, and heater strip does not work at this time, and memory alloy layer 221 is cold to rise, and makes 2 body of pile chuck
Product becomes larger, and 2 outer wall of pile chuck and 8 inner wall of pile crown clamp at this time, and hydraulic cylinder 4 drives pile chuck 2 to move up, and realizes pile crown 8
Extraction；
A kind of guard rail breakdown van pile pulling device according to shown in Fig. 1-2, the air bag protection mechanism 3 include U-shaped air bag 31,
31 inner wall of U-shaped air bag fits with 4 outer wall of hydraulic cylinder, and rubber sleeve 32 is equipped with outside the U-shaped air bag 31, described hydraulic
4 rear side of oil cylinder is fixedly connected with mounting plate 1；
Control box 12 is equipped at the top of the pile pulling DOCK LEVELER 9 and aeration tank 13, the aeration tank 13 are set to control
12 rear side of box, the control box 12 and 13 top of aeration tank are lower than U-shaped 31 top of air bag, are equipped with propagation of explosion inside the aeration tank 13
Pipe and gas-forming agent, 13 two sides of aeration tank are fixedly connected with U-shaped air bag 31 by pipeline, are set on the hydraulic cylinder 4
There is crash sensor 14；
It is equipped with inside the control box 12 and is successively arranged PLC controller, solar controller and battery, institute from front to back
Solar panels 10 to be stated to connect by conducting wire with solar controller, the solar controller is connect by conducting wire with battery,
The heater strip, hydraulic cylinder 4 and crash sensor 14 are connect with battery by conducting wire, and solar controller is by solar energy
The solar energy that plate 10 is collected is converted to power storage in battery, uses, solves bad on outdoor highway for whole device
The problem of electricity is taken, electric energy is saved, environmentally protective, the crash sensor 14 is connect by A/D converter with PLC controller, institute
It states PLC controller to connect by D/A converter with detonating primer, when hydraulic cylinder 4 is collided, can immediately inflate air bag
It heaves, protects the pile pulling DOCK LEVELER 9, control box 12 and aeration tank 13 of two hydraulic cylinders 4 and centre.
Working principle of the present invention:
Referring to Figure of description 1-3, in use, pile pulling DOCK LEVELER 9 and mounting plate 1 are mounted on simultaneously by screw
Guard rail breakdown van is gone up and down on beater head device, completes lifting operation, when work, 4 band of hydraulic cylinder by lifting beater head device operation
Dynamic pile pulling pin 6 and pile chuck 2 protrude into inside pile crown 8, using the cold characteristic to rise of 221 pyrocondensation of memory alloy layer, when heating wire works,
221 pyrocondensation of memory alloy layer is inserted into inside pile crown 8 convenient for pile chuck 2, and heater strip does not work at this time, and memory alloy layer 221 is cold
Rise, 2 volume of pile chuck is made to become larger, 2 outer wall of pile chuck and 8 inner wall of pile crown clamp at this time, and hydraulic cylinder 4 drives pile chuck 2 to force
Press moves up, and is allowed to drive the jacking a distance upwards of pile crown 8, and lifting beater head device is cooperated to sling, each pile chuck 2 is all stretched
Enter the identical position in the inside of pile crown 8, that no setting is required is very long for pile pulling pin 6, and the piecewise extraction of pile crown 8 can be realized；
Referring to Figure of description 2, the present invention is whole since whole device to be mounted on guard rail breakdown van lifting beater head device
A device is used by lifting, can immediately be filled air bag by the way that air bag protection mechanism 3 is arranged when hydraulic cylinder 4 is collided
Tympanites rises, and the pile pulling DOCK LEVELER 9, control box 12 and aeration tank 13 of two hydraulic cylinders 4 and centre is protected, using more
It is safe and secure；
Referring to Figure of description 3-4, when pile chuck 2 is inserted into 8 inside of pile crown, fixed 21 cross section of interior bar is set as oval
Shape, 22 outer wall of expansion-head are set in the oval curved surface concentric with fixed interior bar 21, and fixed 21 longitudinal section of interior bar is set as
Waist is trapezoidal, on the one hand facilitates the insertion of pile chuck 2, on the other hand will not interfere to clamp pile crown 8, and 22 outer wall of expansion-head is equipped with
Multiple non-slip grooves 11,11 section of non-slip groove are set as trapezoidal, and when making pile chuck 2 that pile crown 8 be driven to move up, clamping pile crown 8 is stablized；
Referring to Figure of description 1, fixed by the adjustable plate of through-hole and different height on mobile pile pulling DOCK LEVELER 9
Hole 7 is corresponding, and pile pulling DOCK LEVELER 9 drives pile chuck 2 to move up and down by pile pulling pin 6, between pile chuck 2 and bottom plate 5
Spacing adjustment, so that the height adjustment of pile chuck 2 is realized, to realize the adjusting of pile pulling height.
The several points that should finally illustrate are: firstly, in the description of the present application, it should be noted that unless otherwise prescribed and
It limits, term " installation ", " connected ", " connection " shall be understood in a broad sense, can be mechanical connection or electrical connection, be also possible to two
Connection inside element, can be directly connected, and "upper", "lower", "left", "right" etc. are only used for indicating relative positional relationship, when
The absolute position for being described object changes, then relative positional relationship may change；
Secondly: the present invention discloses in embodiment attached drawing, relates only to the structure being related to the embodiment of the present disclosure, other knots
Structure, which can refer to, to be commonly designed, and under not conflict situations, the same embodiment of the present invention and different embodiments be can be combined with each other；
Last: the foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, all in the present invention
Spirit and principle within, any modification, equivalent replacement, improvement and so on, should be included in protection scope of the present invention it
It is interior.
Claims (8)
1. a kind of guard rail breakdown van pile pulling device, including mounting plate (1), it is characterised in that: the mounting plate (1), which is equipped with, to be adjusted
Plate fixation hole (7), mounting plate (1) front side are equipped with pile pulling DOCK LEVELER (9), pile pulling DOCK LEVELER (9) two sides
Equipped with hydraulic cylinder (4), two hydraulic cylinder (4) bottom ends are fixedly connected with bottom plate (5), the pile pulling DOCK LEVELER
(9) bottom is fixedly connected with pile pulling pin (6), and pile pulling pin (6) bottom end is through bottom plate (5) and to extend to bottom plate (5) bottom solid
Surely pile chuck (2) are connected, the pile chuck (2) acts on pile crown (8) inside and for pulling out pile crown (8) folder, the pile chuck
It (2) include fixed interior bar (21) and expansion-head (22)；
It is fixedly connected with air bag protection mechanism (3) on the outside of the hydraulic cylinder (4), the air bag protection mechanism (3) is far from hydraulic
The one side wall of oil cylinder (4) is equipped with solar panels (10).
2. a kind of guard rail breakdown van pile pulling device according to claim 1, it is characterised in that: the adjustable plate fixation hole
(7) it being set as multiple and homogeneous vertical is distributed on mounting plate (1), pile pulling DOCK LEVELER (9) section is set as L shape,
Pile pulling DOCK LEVELER (9) rear wall is equipped with through-hole corresponding with adjustable plate fixation hole (7), sets outside the through-hole
There is screw, the pile pulling DOCK LEVELER (9) and mounting plate (1) are mounted on guard rail breakdown van by screw and go up and down beater head device
On.
3. a kind of guard rail breakdown van pile pulling device according to claim 1, it is characterised in that: expansion-head (22) setting
Be it is multiple and be uniformly distributed on the outside of fixed interior bar (21), the expansion-head (22) is fixedly connected with fixation interior bar (21), described
Fixed interior bar (21) and pile pulling pin (6) integrated molding.
4. a kind of guard rail breakdown van pile pulling device according to claim 3, it is characterised in that: the fixed interior bar (21) is horizontal
Section is set as ellipse, and expansion-head (22) outer wall is set in the oval curved surface concentric with fixed interior bar (21), institute
It states fixed interior bar (21) longitudinal section and is set as isosceles trapezoid, expansion-head (22) outer wall is equipped with multiple non-slip grooves (11), described
Non-slip groove (11) section is set as trapezoidal.
5. a kind of guard rail breakdown van pile pulling device according to claim 4, it is characterised in that: the expansion-head (22) includes
Memory alloy layer (221), preventing rubber layer (222) and heating layer (223), the preventing rubber layer (222) are wrapped in memory and close
Layer gold (221) is external, and the heating layer (223) is set in the interlayer of memory alloy layer (221), heating layer (223) tool
Body is heater strip.
6. a kind of guard rail breakdown van pile pulling device according to claim 1, it is characterised in that: the air bag protection mechanism
It (3) include U-shaped air bag (31), U-shaped air bag (31) inner wall fits with hydraulic cylinder (4) outer wall, the U-shaped air bag (31)
Outside is equipped with rubber sleeve (32), is fixedly connected on rear side of the hydraulic cylinder (4) with mounting plate (1).
7. a kind of guard rail breakdown van pile pulling device according to claim 6, it is characterised in that: the pile pulling DOCK LEVELER
(9) top is equipped with control box (12) and aeration tank (13), and the aeration tank (13) is set on rear side of control box (12), the control
Box (12) and aeration tank (13) top are lower than U-shaped air bag (31) top, are equipped with detonating primer and gas inside the aeration tank (13)
Propellant, aeration tank (13) two sides are fixedly connected by pipeline with U-shaped air bag (31), and the hydraulic cylinder (4) is equipped with
Crash sensor (14).
8. a kind of guard rail breakdown van pile pulling device according to claim 7, it is characterised in that: the control box (12) is internal
Equipped with being successively arranged PLC controller, solar controller and battery from front to back, the solar panels (10) by conducting wire with
Solar controller connection, the solar controller are connect by conducting wire with battery, the heater strip, hydraulic cylinder (4)
It is connect by conducting wire with battery with crash sensor (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910083418.6A CN109763488A (en) | 2019-01-29 | 2019-01-29 | A kind of guard rail breakdown van pile pulling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910083418.6A CN109763488A (en) | 2019-01-29 | 2019-01-29 | A kind of guard rail breakdown van pile pulling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109763488A true CN109763488A (en) | 2019-05-17 |
Family
ID=66455531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910083418.6A Pending CN109763488A (en) | 2019-01-29 | 2019-01-29 | A kind of guard rail breakdown van pile pulling device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11217831A (en) * | 1998-02-03 | 1999-08-10 | Sato Kiso Koji Kk | Ground cutting device of steel material |
| KR101171678B1 (en) * | 2011-10-13 | 2012-08-09 | 이영수 | Beam extract machine |
| CN204125945U (en) * | 2014-09-12 | 2015-01-28 | 重庆宏工工程机械有限责任公司 | Vehicular extractor |
| CN204662442U (en) * | 2015-03-27 | 2015-09-23 | 江苏高速公路工程养护有限公司 | Highway barrier hydraulic pressure inner bearing type gets an equipment |
| CN105443064A (en) * | 2015-12-30 | 2016-03-30 | 中国石油天然气股份有限公司 | Underground controllable self-expansion casing patching pipe |
| CN105626001A (en) * | 2016-03-04 | 2016-06-01 | 中国石油集团渤海钻探工程有限公司 | Novel self-expansion screen pipe |
| CN105951830A (en) * | 2016-05-27 | 2016-09-21 | 周详淞 | Hydraulic pile driving and extracting device of highway anti-collision guardrail |
| CN206859136U (en) * | 2017-05-12 | 2018-01-09 | 赵雷 | It is a kind of based on the anti-collision air-bed of guardrail |
-
2019
- 2019-01-29 CN CN201910083418.6A patent/CN109763488A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11217831A (en) * | 1998-02-03 | 1999-08-10 | Sato Kiso Koji Kk | Ground cutting device of steel material |
| KR101171678B1 (en) * | 2011-10-13 | 2012-08-09 | 이영수 | Beam extract machine |
| CN204125945U (en) * | 2014-09-12 | 2015-01-28 | 重庆宏工工程机械有限责任公司 | Vehicular extractor |
| CN204662442U (en) * | 2015-03-27 | 2015-09-23 | 江苏高速公路工程养护有限公司 | Highway barrier hydraulic pressure inner bearing type gets an equipment |
| CN105443064A (en) * | 2015-12-30 | 2016-03-30 | 中国石油天然气股份有限公司 | Underground controllable self-expansion casing patching pipe |
| CN105626001A (en) * | 2016-03-04 | 2016-06-01 | 中国石油集团渤海钻探工程有限公司 | Novel self-expansion screen pipe |
| CN105951830A (en) * | 2016-05-27 | 2016-09-21 | 周详淞 | Hydraulic pile driving and extracting device of highway anti-collision guardrail |
| CN206859136U (en) * | 2017-05-12 | 2018-01-09 | 赵雷 | It is a kind of based on the anti-collision air-bed of guardrail |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190517 |
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| RJ01 | Rejection of invention patent application after publication |