CN102102718B - Power unit for braking of tower crane - Google Patents
Power unit for braking of tower crane Download PDFInfo
- Publication number
- CN102102718B CN102102718B CN 201010618399 CN201010618399A CN102102718B CN 102102718 B CN102102718 B CN 102102718B CN 201010618399 CN201010618399 CN 201010618399 CN 201010618399 A CN201010618399 A CN 201010618399A CN 102102718 B CN102102718 B CN 102102718B
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- valve
- assembly
- pump
- oil
- oil duct
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Abstract
The invention discloses a power unit for braking of a tower crane, and belongs to a hydraulic pump station, aiming at providing a power-operated and manual braking pump station. The power unit for the braking of the tower crane comprises a power-operated pump assembly and a manual pump assembly, wherein the power-operated pump assembly is composed of a motor (1), an oil pump (8) and an overflow valve (6), and is communicated with a directional valve assembly (4) through an oil way block (5); the directional valve assembly is composed of a valve body (4-1), a first electromagnetic directional valve (4-2) and a manual directional valve (4-3), and is communicated with a manual pump assembly (2) through an oil way block assembly (3); the oil way block assembly (3) is composed of a body (3-1), a first pressure switch (3-2), a second pressure switch (3-3), a second electromagnetic directional valve (3-4), a disconnecting valve (3-5) and a security valve (3-6); and the manual pump assembly is composed of a pump body (2-1), a check valve (2-4), a plunger piston (2-2) and a handle (2-3).
Description
Technical field: the present invention relates to a kind of device that provides power for tower mechanism moving system, relate in particular to the moving power unit of a kind of tower mechanism.
Background technique: at present, tower mechanism is moved system and usually provided hydraulic power by hydraulic electric pump, due to pressurizer generally not being set, therefore very likely causes the coaster accident in case have a power failure, and is very dangerous.
Summary of the invention: for the defects that exists in prior art, the present invention aim to provide a kind of not only can be electronic but also can be manually, the moving power unit of tower mechanism with pressure holding function.
To achieve these goals, the present invention by the following technical solutions: it comprises motor-pump assembly and hand pump assembly; Described motor-pump assembly is made of motor, the oil pump that is connected with this motor, the relief valve that is located on this oil pump, and motor-pump assembly is established vittate manifold block and is communicated with reversing valve assembly by being fixed on oil pump; This reversing valve assembly establishes vittate valve body by being fixed on manifold block, be located at the first solenoid directional control valve and the hand-operated direction valve that are communicated with oil duct on this valve body consists of, and reversing valve assembly is communicated with the hand pump assembly by the manifold block assembly; The manifold block assembly is established vittate body by being fixed on valve body, be located at the first pressure switch, the second pressure switch, the second solenoid directional control valve, stop valve and the safety valve that are interconnected by oil duct on this body and consist of; The hand pump assembly is established the vittate pump housing by being fixed on, is located at two one-way valves that are interconnected by oil duct in this pump housing on body, the plunger and the handle that are located on this pump housing consist of.
Compared with the prior art, the present invention is owing to adopting technique scheme, not only increased the hand pump assembly in system, but also the pressurize elements such as relief valve, one-way valve have been increased, even if therefore have a power failure suddenly the major accidents such as coaster can not occur yet, provide braking required power but also can utilize manual mode to continue as the tower machine; Greatly improved the Security of tower machine.In addition, due to motor-pump assembly bringing onto load work all the time, therefore greatly extended the working life of motor and oil pump.
Description of drawings:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A sectional view in Fig. 1;
Fig. 3 is the B-B sectional view in Fig. 2;
Fig. 4 is the C-C sectional view in Fig. 1;
Fig. 5 is the D-D sectional view in Fig. 1;
Fig. 6 is the E-E sectional view in Fig. 1;
Fig. 7 is the F-F sectional view in Fig. 1;
Fig. 8 is principle schematic of the present invention.
In figure: motor 1 hand pump assembly 2 pump housing 2-1 plunger 2-2 handle 2-3 one-way valve 2-4 manifold block assembly 3 body 3-1 first pressure switch 3-2 second pressure switch 3-3 second solenoid directional control valve 3-4 stop valve 3-5 safety valve 3-6 reversing valve assembly 4 valve body 4-1 the first solenoid directional control valve 4-2 hand-operated direction valve 4-3 manifold block 5 relief valve 6 fuel tank 7 oil pump 8 oil ducts 9
Embodiment: the invention will be further described below in conjunction with accompanying drawing and specific embodiment:
In Fig. 1～8, motor-pump assembly is made of motor 1, the oil pump 8 that is connected with this motor, the relief valve 6 that is located on this oil pump, and fuel tank 7 fixedly is communicated with oil pump 8.This motor-pump assembly is by being fixed on oil pump 8 and the inner manifold block 5 that is provided with oil duct 9 is communicated with reversing valve assembly 4; This reversing valve assembly is communicated with by oilhole between this two selector valve by being fixed on manifold block 5 and the inner valve body 4-1 that is provided with oil duct 9, being located at the first solenoid directional control valve 4-2 and the hand-operated direction valve 4-3 that are communicated with oil duct 9 on this valve body and consisting of.Reversing valve assembly 4 is communicated with hand pump assembly 2 by manifold block assembly 3, manifold block assembly 3 goes up by being fixed on valve body 4-1 the body 3-1 that inside is provided with oil duct 9, is located at the first pressure switch 3-2, the second pressure switch 3-3, the second solenoid directional control valve 3-4, stop valve 3-5 and the safety valve 3-6 that are interconnected by oil duct 9 on this body and consists of; Hand pump assembly 2 by the pump housing 2-1 that is fixed on body 3-1 upper inside and is provided with oil duct 9, be located at two one-way valve 2-4 that are interconnected by oil duct 9 in this pump housing, the plunger 2-2 and the handle 2-3 that are located on this pump housing consist of.
Working principle, as shown in Figure 8:
When 1) the second solenoid directional control valve 3-4 switched on, system pressure rose; During less than 13.2MPa, the first pressure switch 3-2, the second pressure switch 3-3 are in off state when system pressure; When system pressure rose to more than or equal to 13.2MPa, the first pressure switch 3-2 disconnected, and the second pressure switch 3-3 connects; System is in for oil condition.
2) when system pressure continues to rise to more than or equal to 16MPa, the first pressure switch 3-2, the second pressure switch 3-3 are in on-state, the pressure switch signal is delivered to control circuit, and the first solenoid directional control valve 4-2 connects, the second solenoid directional control valve 3-4 disconnects, and system is in packing state.
3) when system pressure is between 13.2MPa～16MPa, the second pressure switch 3-3 disconnects, the first pressure switch 3-2 connects, and system is in for oil condition.
4) when system pressure is down to less than 13.2MPa, the first pressure switch 3-2, the second pressure switch 3-3 are in off state, the pressure switch signal is delivered to control circuit, the second solenoid directional control valve 3-4 connects, the first solenoid directional control valve 4-2 disconnects, system pressure rises, and system changes over to for oil condition from packing state; Iterative cycles like this.
6) the second solenoid directional control valve 3-4 connection, the first solenoid directional control valve 4-2 cut off the power supply simultaneously, the whole system release.
In the time of manually, first with hand-operated direction valve 4-3 commutation, shake hand pump assembly 2 until two one-way valve 2-4 open, at this moment system's in running order (brake calipers unclamps); During release, first unclamp hand pump assembly 2, then decontrol hand-operated direction valve 4-3, so system is in depressurization phase (brake calipers clamping).
Claims (1)
1. the moving power unit of tower mechanism, comprise motor-pump assembly and hand pump assembly; It is characterized in that: described motor-pump assembly is made of motor (1), the oil pump (8) that is connected with this motor, the relief valve (6) that is located on this oil pump, and motor-pump assembly is provided with oil duct (9) by being fixed on oil pump (8) manifold block (5) is communicated with reversing valve assembly (4); This reversing valve assembly by the valve body (4-1) that is fixed on manifold block (5) and is provided with oil duct (9), be located at valve body (4-1) is upper and is communicated with the oil duct (9) of this valve body the first solenoid directional control valve (4-2) and hand-operated direction valve (4-3) formation, reversing valve assembly (4) passes through manifold block assembly (3) and is communicated with hand pump assembly (2); Manifold block assembly (3) is by the body (3-1) that is fixed on valve body (4-1) and is provided with oil duct (9), is located at body (3-1) and goes up and pass through the first pressure switch (3-2), the second pressure switch (3-3), the second solenoid directional control valve (3-4), stop valve (3-5) and safety valve (3-6) that the oil duct (9) of this body is interconnected and consist of; Hand pump assembly (2) by the pump housing (2-1) that is fixed on body (3-1) and is provided with oil duct (9), be located in the pump housing (2-1) and two one-way valves (2-4) that oil duct (9) by this pump housing is interconnected, be located at plunger (2-2) and handle (2-3) formation on this pump housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010618399 CN102102718B (en) | 2010-12-31 | 2010-12-31 | Power unit for braking of tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010618399 CN102102718B (en) | 2010-12-31 | 2010-12-31 | Power unit for braking of tower crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102102718A CN102102718A (en) | 2011-06-22 |
| CN102102718B true CN102102718B (en) | 2013-06-05 |
Family
ID=44155704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010618399 Expired - Fee Related CN102102718B (en) | 2010-12-31 | 2010-12-31 | Power unit for braking of tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102102718B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105398977A (en) * | 2015-12-09 | 2016-03-16 | 贵州枫阳液压有限责任公司 | Tower crane brake unit |
| CN105465067A (en) * | 2015-12-09 | 2016-04-06 | 沈阳飞研航空设备有限公司 | Multifunctional combined pump |
| CN107032242A (en) * | 2017-06-15 | 2017-08-11 | 合肥海腾软件科技有限公司 | The emergency braking apparatus of arm tower crane jib lubbing mechanism |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5062266A (en) * | 1990-08-23 | 1991-11-05 | Kabushiki Kaisha Kobe Seiko Sho | Slewing control device for crane |
| AU5005596A (en) * | 1996-03-25 | 1997-10-17 | Larzep, S.A. | Light two-stage piston pump |
| CN101704486B (en) * | 2009-11-05 | 2011-11-02 | 卢宇 | Pilot control valve for aboard duplex hoist brake of autocrane |
| CN201944163U (en) * | 2010-12-31 | 2011-08-24 | 贵州枫阳液压有限责任公司 | Power unit for braking tower crane |
| CN202131032U (en) * | 2011-07-15 | 2012-02-01 | 长沙中联重工科技发展股份有限公司 | Brake hydraulic control system for luffing jib tower crane, and brake control system and device |
-
2010
- 2010-12-31 CN CN 201010618399 patent/CN102102718B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102102718A (en) | 2011-06-22 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20141231 |
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| EXPY | Termination of patent right or utility model |