CN108249324B - A kind of sequential telescopic mechanism of the gib arm of crane - Google Patents
A kind of sequential telescopic mechanism of the gib arm of crane Download PDFInfo
- Publication number
- CN108249324B CN108249324B CN201711316225.8A CN201711316225A CN108249324B CN 108249324 B CN108249324 B CN 108249324B CN 201711316225 A CN201711316225 A CN 201711316225A CN 108249324 B CN108249324 B CN 108249324B
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- Prior art keywords
- oil cylinder
- telescopic oil
- telescopic
- cylinder
- valve
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
Abstract
The invention discloses a kind of sequential telescopic mechanisms of gib arm of crane, including the first telescopic oil cylinder, the second telescopic oil cylinder, oil circuit, sequence valve and pilot sequencing valve, one end of the cylinder barrel of first telescopic oil cylinder and the piston rod of the second telescopic oil cylinder are hinged, the other end of the cylinder barrel of first telescopic oil cylinder is fixed with sequence valve, it is provided on sequence valve and touches needle, the cylinder barrel of second telescopic oil cylinder is fixed with great wheel, is provided with and touches the collision block that needle matches in great wheel；The oil circuit includes oil pipe, hydraulic fluid port A and hydraulic fluid port B, sequence valve is provided on the oil pipe of the rodless cavity of hydraulic fluid port A the first telescopic oil cylinder of connection, it is provided with pilot sequencing valve on the oil pipe of the rodless cavity of hydraulic fluid port A the second telescopic oil cylinder of connection, is connected between the first telescopic oil cylinder and the rod chamber of the second telescopic oil cylinder.The invention is not necessarily to cracking pressure, saves energy consumption；Sequence valve and pilot sequencing valve, which are used in combination, effectively reduces boom section, mitigates the weight of boom, improves boom inner space, while without improving difficulty of processing.
Description
Technical field
The invention belongs to crane technical fields, are specifically related to a kind of sequential telescopic mechanism of gib arm of crane.
Background technique
As national economy sustainable growth, infrastructure persistently carry out and the outburst of Logistics Market, what crane was related to is hung
It fills, safeguard, field of speedily carrying out rescue work uses more.Most important load-bearing structural member when boom is crane job is the weight of boom, strong
Degree, rigidity will directly affect the service performance of crane.Telescoping mechanism is the critical component of boom, it restrict hoisting arm expansion and
Hoist bearing capacity.
Currently, there are single cylinder, oil cylinder strip cord, single cylinder bolt or Multi-cylinder band sequence in the common mechanism of hoisting arm expansion
Valve.Wherein, the flexible joint arm that can only stretch of single cylinder driving, operating radius are small；The driving of oil cylinder strip cord is flexible, and structure is multiple
Miscellaneous, layout is difficult, and boom section is excessive；Single cylinder bolt driving is flexible, needs precisely to manufacture, and manufacturing cost is high；Multi-cylinder band
Sequence valve driving is flexible, needs certain opened by pressure, and energy consumption is high.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of sequential telescopic mechanism of gib arm of crane, do not need to open pressure
Power saves energy consumption, reduces boom section, mitigates boom weight, improves boom inner space, without improving difficulty of processing.
The present invention includes the first telescopic oil cylinder, the second telescopic oil cylinder, oil circuit, sequence valve and pilot sequencing valve, and first is flexible
One end of the cylinder barrel of oil cylinder and the piston rod of the second telescopic oil cylinder are hinged, and the other end of the cylinder barrel of the first telescopic oil cylinder is fixed with suitable
Sequence valve is provided on sequence valve and touches needle, and the cylinder barrel of the second telescopic oil cylinder is fixed with great wheel, is provided with and touches needle in great wheel and match
Collision block；The oil circuit includes oil pipe, hydraulic fluid port A and hydraulic fluid port B, is set on the oil pipe of the rodless cavity of hydraulic fluid port A the first telescopic oil cylinder of connection
It is equipped with sequence valve, is provided with pilot sequencing valve, the first telescopic oil cylinder on the oil pipe of the rodless cavity of hydraulic fluid port A the second telescopic oil cylinder of connection
And second telescopic oil cylinder rod chamber between connect.
When oil cylinder sequence is stretched out, hydraulic oil is through hydraulic fluid port A entering order valve, subsequently into the first telescopic oil cylinder without bar
Chamber, the first telescopic oil cylinder stretch out and in place after, pressure reaches setting value, and pilot sequencing valve is opened, and hydraulic oil enters second and stretches
The rodless cavity of oil cylinder, the second telescopic oil cylinder stretch out.
The setting value is 13MPa.
The cylinder barrel of first telescopic oil cylinder is connect with the piston rod of the second telescopic oil cylinder by pin shaft.
The oil pipe passed through for hydraulic oil is both provided in first telescopic oil cylinder and the second telescopic oil cylinder.
The sequence valve is mechanical sequential valve.
The mechanical sequential valve is fixed on the cylinder bottom of the first telescopic oil cylinder.
The collision block is mounted in great wheel by nut.
It stretches the beneficial effects of the present invention are: controlling the first telescopic oil cylinder and second by sequence valve and pilot sequencing valve
The sequential telescopic of oil cylinder, whether sequence valve is by collision block and be pressed in touch on needle and realize opening and closing, and whether collision block is pressed in liquid
Controlling on sequence valve is determined by whether the second telescopic oil cylinder is stretched, and the pressure additional without other saves energy consumption；Sequence valve
It is used in combination with pilot sequencing valve and effectively reduces boom section, mitigate the weight of boom, improve boom inner space, while nothing
Difficulty of processing need to be improved.
Detailed description of the invention
Fig. 1 is positive structure schematic of the invention.
Fig. 2 is schematic perspective view of the invention.
Fig. 3 is hydraulic schematic diagram of the present invention.
Needle, 5 collision blocks, 6 great wheels, 7 sequence valves, 8 are touched in 1 first telescopic oil cylinder, 2 pin shafts, 3 second telescopic oil cylinders, 4 in the figure
Pilot sequencing valve, 9 hydraulic fluid port A, 10 hydraulic fluid port B, 11 rod chambers, 12 rodless cavities.
Specific embodiment
As shown in Figure 1-3, the present invention includes the first telescopic oil cylinder 1, the second telescopic oil cylinder 3, oil circuit, sequence valve 7 and hydraulic control
Sequence valve 8, one end of the cylinder barrel of the first telescopic oil cylinder 1 and the piston rod of the second telescopic oil cylinder 3 are hinged, the first telescopic oil cylinder 1
The other end of cylinder barrel is fixed with sequence valve 7, is provided on sequence valve 7 and touches needle 4, and the cylinder barrel of the second telescopic oil cylinder 3 is fixed with great wheel
6, the collision block 5 that needle 4 matches is provided with and touched in great wheel 6；The oil circuit includes oil pipe, hydraulic fluid port A9 and hydraulic fluid port B10, and hydraulic fluid port A9 connects
Connect and be provided with sequence valve 7 on the oil pipe of the rodless cavity 12 of the first telescopic oil cylinder 1, the second telescopic oil cylinder of hydraulic fluid port A9 connection 3 without bar
It is provided with pilot sequencing valve 8 on the oil pipe of chamber 12, connects between the first telescopic oil cylinder 1 and the rod chamber 11 of the second telescopic oil cylinder 3.
When oil cylinder sequence is stretched out, hydraulic oil is through hydraulic fluid port A9 entering order valve 7, subsequently into the first telescopic oil cylinder without bar
Chamber 12, the first telescopic oil cylinder 1 stretch out and in place after, pressure reaches setting value, and pilot sequencing valve 8 is opened, and hydraulic oil is into second
The rodless cavity 12 of telescopic oil cylinder 3, the second telescopic oil cylinder 3 stretch out.
The setting value is 13MPa.
The cylinder barrel of first telescopic oil cylinder 1 is connect with the piston rod of the second telescopic oil cylinder 3 by pin shaft.
The oil pipe passed through for hydraulic oil is both provided in first telescopic oil cylinder 1 and the second telescopic oil cylinder 3.
The sequence valve 7 is mechanical sequential valve.
The mechanical sequential valve is fixed on the cylinder bottom of the first telescopic oil cylinder 1.
The collision block 5 is mounted in great wheel 6 by nut.
The piston rod of first telescopic oil cylinder 1 of the invention and joint arm one end for crane are hinged, the second telescopic oil cylinder 3
Two joint arm one end of piston rod and crane are hinged；It is mounted on the sequence valve 7 of the cylinder barrel tail portion of the first telescopic oil cylinder 1, sequence valve
With needle 4 is touched, the cylinder barrel tail portion of the second telescopic oil cylinder 3 is equipped with collision block 5 corresponding with needle 4 is touched, and collision block 5 is used for opening sequence
Valve 7.
The sequential telescopic of the first telescopic oil cylinder 1 and the second telescopic oil cylinder 3 is controlled by sequence valve 7 and pilot sequencing valve 8.
When the gib arm of crane need to stretch out, the first telescopic oil cylinder 1 stretches out, after the first telescopic oil cylinder 1 stretches out in place, the second telescopic oil cylinder 3
It stretches out, and stretches out in place；When telescoping mechanism need to be shunk, the second telescopic oil cylinder 3 is first shunk, when the second telescopic oil cylinder 3 is retracted to
Behind position, the first telescopic oil cylinder 1 is shunk, and is shunk in place.Sequence valve 7 touches needle 4 by what whether collision block 5 was pressed in sequence valve 7 come real
The conversion of existing switch state, is not necessarily to cracking pressure, saves energy consumption.The present invention is by being used in combination sequence valve 7 and pilot sequencing valve 8
It realizes and stretches, reduce boom section, alleviate boom weight, improve boom inner space, meanwhile, without improving difficult processing
Degree.
The cylinder barrel tail portion of second telescopic oil cylinder 3 is equipped with great wheel 6, and collision block 5 is mounted in great wheel 6 by bolt, can
With the position of convenient adjustment installation.
First telescopic oil cylinder 1 and the second telescopic oil cylinder 3 are single pole double acting hydraulic cylinder.
Single pole two-way ram cylinder structure is simple, it can be achieved that move back and forth, and removes deceleration device from, and do not have drive gap,
Movement is steady, and reliable operation is convenient to mount and dismount, for ease of maintenaince, and connection type multiplicity.
As shown in figure 3, the first telescopic oil cylinder 1 and the second telescopic oil cylinder 3 are full reduced at this time when oil cylinder will sequentially stretch out
State, collision block 5 are pressed in the touching on needle 4 of sequence valve 7, and sequence valve 7 is in the state opened, and hydraulic oil passes through sequence from hydraulic fluid port A 9
Valve 7 enters the rodless cavity 12 of the first telescopic oil cylinder 1, and the first telescopic oil cylinder 1 stretches out, after the first telescopic oil cylinder 1 stretches in place, liquid
Oil pressure is persistently increased to setting value, preferred value 13MPa, and pilot sequencing valve 8 is opened, and hydraulic oil is entered the second telescopic oil cylinder
3 rodless cavity 12, the second telescopic oil cylinder 3 stretch out, at this point, the disengaging sequence valve 7 of collision block 5 touches needle 4, sequence valve 7 is closed.
When oil cylinder will be retracted sequentially, the first telescopic oil cylinder 1 and the second telescopic oil cylinder 3 are to stretch state, collision block 5 entirely at this time
Be detached from sequence valve 7 touches needle 4, and sequence valve 7 is closed, and hydraulic oil enters the first telescopic oil cylinder 1 and the second telescopic oil cylinder from hydraulic fluid port B10
12 hydraulic fluid pressure of rodless cavity of 3 rod chamber 13, the second telescopic oil cylinder 3 is greater than the set value, preferred value 13MPa, opens liquid
Sequence valve 8 is controlled, the hydraulic oil of the rodless cavity 12 of the second telescopic oil cylinder 3 is passed through through the oil pipe of pilot sequencing valve 8 and the first telescopic oil cylinder 1
Hydraulic fluid port A10 oil return box, the second telescopic oil cylinder 3 retraction, after the second telescopic oil cylinder 3 bounces back in place, collision block 5 is pressed in sequence valve 7
It touches on needle 4, opening sequence valve 7, the hydraulic oil of the rodless cavity 12 of the first telescopic oil cylinder 1 is through sequence valve 7 and its oil pipe from hydraulic fluid port A
10 oil return boxes, the first telescopic oil cylinder 1 retract.
Claims (8)
1. a kind of sequential telescopic mechanism of gib arm of crane, which is characterized in that including the first telescopic oil cylinder (1), the second telescopic oil cylinder
(3), oil circuit, sequence valve (7) and pilot sequencing valve (8), one end of the cylinder barrel of the first telescopic oil cylinder (1) and the second telescopic oil cylinder
(3) piston rod is hinged, and the other end of the cylinder barrel of the first telescopic oil cylinder (1) is fixed with sequence valve (7), and sequence valve is arranged on (7)
It touches needle (4), the cylinder barrel of the second telescopic oil cylinder (3) is fixed with great wheel (6), is provided with and touches what needle (4) matched in great wheel (6)
Collision block (5)；The oil circuit includes oil pipe, hydraulic fluid port A (9) and hydraulic fluid port B (10), the nothing of hydraulic fluid port A (9) the first telescopic oil cylinder of connection (1)
It is provided on the oil pipe of rod cavity (12) sequence valve (7), the oil pipe of the rodless cavity (12) of hydraulic fluid port A (9) the second telescopic oil cylinder of connection (3)
On be provided with pilot sequencing valve (8), the rod chamber (11) of the first telescopic oil cylinder (1) and the rod chamber of the second telescopic oil cylinder (3)
(11) it connects between.
2. the sequential telescopic mechanism of the gib arm of crane as described in claim 1, which is characterized in that when oil cylinder sequence is stretched out, liquid
Pressure oil is through hydraulic fluid port A (9) entering order valve (7), subsequently into the rodless cavity (12) of the first telescopic oil cylinder, the first telescopic oil cylinder (1)
Stretch out and in place after, pressure reaches setting value, and pilot sequencing valve (8) is opened, and hydraulic oil is into the second telescopic oil cylinder (3) without bar
Chamber (12), the second telescopic oil cylinder (3) stretch out.
3. the sequential telescopic mechanism of the gib arm of crane as claimed in claim 2, which is characterized in that the setting value is 13MPa.
4. the sequential telescopic mechanism of the gib arm of crane as described in any one of claims 1-3, which is characterized in that described first is flexible
The cylinder barrel of oil cylinder (1) is connect with the piston rod of the second telescopic oil cylinder (3) by pin shaft.
5. the sequential telescopic mechanism of the gib arm of crane as described in any one of claims 1-3, which is characterized in that described first is flexible
The oil pipe passed through for hydraulic oil is both provided in oil cylinder (1) and the second telescopic oil cylinder (3).
6. the sequential telescopic mechanism of the gib arm of crane as described in any one of claims 1-3, which is characterized in that the sequence valve
It (7) is mechanical sequential valve.
7. the sequential telescopic mechanism of the gib arm of crane as claimed in claim 6, which is characterized in that the mechanical sequential valve is fixed
Cylinder bottom in the first telescopic oil cylinder (1).
8. the sequential telescopic mechanism of the gib arm of crane as described in any one of claims 1-3, which is characterized in that the collision block (5)
It is mounted on great wheel (6) by nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711316225.8A CN108249324B (en) | 2017-12-12 | 2017-12-12 | A kind of sequential telescopic mechanism of the gib arm of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711316225.8A CN108249324B (en) | 2017-12-12 | 2017-12-12 | A kind of sequential telescopic mechanism of the gib arm of crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108249324A CN108249324A (en) | 2018-07-06 |
| CN108249324B true CN108249324B (en) | 2019-06-14 |
Family
ID=62722434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711316225.8A Active CN108249324B (en) | 2017-12-12 | 2017-12-12 | A kind of sequential telescopic mechanism of the gib arm of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108249324B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3167617B2 (en) * | 1996-04-02 | 2001-05-21 | カヤバ工業株式会社 | Fluid pressure control device |
| CN102085851B (en) * | 2011-01-13 | 2013-06-05 | 中联重科股份有限公司 | Multistage telescoping mechanism sequence control device and engineering equipment applying same |
| CN203670338U (en) * | 2014-01-13 | 2014-06-25 | 常德中联重科液压有限公司 | Sequence valve and corresponding hydraulic control loop |
| CN103896155B (en) * | 2014-01-27 | 2016-03-16 | 徐州徐工随车起重机有限公司 | Control the hydraulic control system of twin-tub sequential telescopic, suspension arm mechanism and hoisting crane |
| CN204625035U (en) * | 2015-05-29 | 2015-09-09 | 湖南双达机电有限责任公司 | A kind of telescoping mechanism saving arm for hoisting crane four |
-
2017
- 2017-12-12 CN CN201711316225.8A patent/CN108249324B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108249324A (en) | 2018-07-06 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A sequential telescopic mechanism of crane boom Effective date of registration: 20200911 Granted publication date: 20190614 Pledgee: Changde finance finance Company limited by guarantee Pledgor: HUNAN BAITE TRUCK CRANE Co.,Ltd. Registration number: Y2020980005941 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210521 Granted publication date: 20190614 Pledgee: Changde finance finance Company limited by guarantee Pledgor: HUNAN BAITE TRUCK CRANE Co.,Ltd. Registration number: Y2020980005941 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A sequential telescopic mechanism of crane boom Effective date of registration: 20221122 Granted publication date: 20190614 Pledgee: Bank of Communications Co.,Ltd. Changde Branch Pledgor: HUNAN BAITE TRUCK CRANE CO.,LTD. Registration number: Y2022980022845 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |