CN219526061U - Crane cab lifting hydraulic system - Google Patents
Crane cab lifting hydraulic system Download PDFInfo
- Publication number
- CN219526061U CN219526061U CN202320407908.9U CN202320407908U CN219526061U CN 219526061 U CN219526061 U CN 219526061U CN 202320407908 U CN202320407908 U CN 202320407908U CN 219526061 U CN219526061 U CN 219526061U
- Authority
- CN
- China
- Prior art keywords
- valve
- speed regulating
- port
- regulating valve
- hydraulic
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a lifting hydraulic system of a crane cab, which comprises a hydraulic pump, a hydraulic oil tank, an overflow valve, an electromagnetic directional valve, a speed regulation valve group and a lifting oil cylinder of the lifting cab; the speed regulating valve group comprises a three-way compensation type speed regulating valve, a throttle valve, an electromagnetic ball valve, a one-way valve and a two-way compensation type speed regulating valve; wherein: the oil outlet of the hydraulic pump is connected with the P port of the electromagnetic directional valve and connected with the overflow valve in parallel; the opening A of the electromagnetic reversing valve is connected with the opening P of the speed regulating valve group; the port B and the port T of the electromagnetic reversing valve and the port T of the speed regulating valve bank return to the hydraulic oil tank, and the port A of the speed regulating valve bank is connected with the rodless cavity of the jacking oil cylinder. The utility model has simple structure and reasonable design, can lift, lower and keep the cab to provide control, and greatly meets the lifting requirement of the crane.
Description
Technical Field
The utility model belongs to the technical field of hydraulic systems, and relates to a crane cab lifting hydraulic system.
Background
Engineering cranes are widely applied in various engineering hoisting fields, and in special hoisting occasions, such as ports, petrochemical industry and the like, which need hoisting installation, a cab needs to be lifted to a specific height to change an operation view. However, the existing cab lifting hydraulic system cannot lift, lower and keep the cab to provide control, so that the lifting requirement is difficult to meet.
Disclosure of Invention
The utility model aims to provide the lifting hydraulic system of the crane cab, which has a simple structure and reasonable design, and can be used for lifting, lowering and keeping the cab to control so as to meet the lifting requirement.
The utility model adopts the technical scheme that: the device system comprises a hydraulic pump, a hydraulic oil tank, an overflow valve, an electromagnetic directional valve, a speed regulating valve group and a lifting oil cylinder for lifting a cab; the speed regulating valve group comprises a three-way compensation type speed regulating valve, a throttle valve, an electromagnetic ball valve, a one-way valve and a two-way compensation type speed regulating valve; wherein: the oil outlet of the hydraulic pump is connected with the P port of the electromagnetic directional valve and connected with the overflow valve in parallel; the opening A of the electromagnetic reversing valve is connected with the opening P of the speed regulating valve group; the port B and the port T of the electromagnetic reversing valve and the port T of the speed regulating valve bank return to the hydraulic oil tank, and the port A of the speed regulating valve bank is connected with the rodless cavity of the jacking oil cylinder.
By adopting the structure, when the hydraulic lifting device is used, after the equipment and the hydraulic pump are operated, when the cab is required to be lifted, the electromagnetic directional valve is switched, and hydraulic oil enters the rodless cavity of the lifting oil cylinder to lift the cab; when the cab is required to be lowered, the electromagnetic ball valve is reversed, the hydraulic oil in the rodless cavity of the jacking oil cylinder returns oil, the oil cylinder is retracted under the action of gravity of the cab, and the cab falls; when the cab is required to be kept at any position, the electromagnetic reversing valve and the electromagnetic ball valve are reset, the system has a locking function, and the oil cylinder is kept to have a fixed stroke; the three-way compensation type speed regulating valve and the two-way compensation type speed regulating valve are respectively used for controlling the lifting and falling speeds of the cab device; when the cab has a system fault in a lifting state, the throttle valve can be manually released so as to put down the cab. The utility model has simple structure and reasonable design, can lift, lower and keep the cab to provide control, and greatly meets the lifting requirement of the crane.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
In the figure: 1-a hydraulic pump; 2-a hydraulic oil tank; 3-overflow valve; 4-an electromagnetic directional valve; 5-a speed regulating valve group; 6-three-way compensation type speed regulating valve; 7-a throttle valve; 8-an electromagnetic ball valve; 9-a one-way valve; 10-two-way compensation type speed regulating valve; 11-jacking oil cylinder.
Detailed Description
As shown in the figure, the hydraulic pump comprises a hydraulic pump 1, a hydraulic oil tank 2, an overflow valve 3, an electromagnetic reversing valve 4, a speed regulating valve group 5 and a lifting oil cylinder 11 for lifting a cab. The speed regulating valve group 5 comprises a three-way compensation type speed regulating valve 6, a throttle valve 7, an electromagnetic ball valve 8, a one-way valve 9 and a two-way compensation type speed regulating valve 10. The oil outlet of the hydraulic pump 1 is connected with the port of the electromagnetic directional valve 4P and connected with the overflow valve 3 in parallel. The opening of the electromagnetic reversing valve 4A is connected with the opening of the speed regulating valve group P. The port of the electromagnetic directional valve 4B, the port T and the port of the speed regulating valve group 5T return to the hydraulic oil tank 2, and the port of the speed regulating valve group 5A is connected with the rodless cavity of the jacking oil cylinder 11.
The hydraulic pump 1 is a quantitative gear pump; the overflow valve 3 is a direct-acting constant-pressure overflow valve; the electromagnetic reversing valve 4 is a two-position four-way plate type slide valve; the speed regulation valve group 5 is a threaded cartridge valve group; the jacking cylinders 11 are single-acting hydraulic cylinders, and two jacking cylinders lift the cab.
The three-way compensation type speed regulating valve 6, the throttle valve 7 and the two-way compensation type speed regulating valve 10 integrated by the speed regulating valve group 5 are all manually adjustable, the passing flow is set, and the throttle valve 7 has a locking function when being closed; the electromagnetic ball valve 8 is a two-position two-way valve, and the initial position has a locking function through a ball valve structure; the check valve 9 has a cone valve structure and a locking function reversely.
The control process of the utility model is as follows:
the hydraulic pump 1 operates under the lifting working condition of the load cab, the overflow valve 3 connected in parallel with the pump outlet is a direct-acting overflow valve, the constant pressure is achieved, and the lifting capacity can be adjusted by adjusting the working pressure of the system in a certain range. The electromagnetic directional valve 4 is used for reversing, hydraulic oil enters a speed regulating valve group 5P from an electromagnetic directional valve 4P-A, passes through a three-way compensation type speed regulating valve 6a-b, an electromagnetic ball valve 8a-b and a one-way valve 9a-b, enters a rodless cavity of a jacking cylinder 11 from the speed regulating valve group 5A, and extends out of a lifting load cab. Because the system is a constant displacement pump system, the flow rate needs to be regulated, so that the lifting speed of a load cab is regulated, the three-way compensation type speed regulating valve 6 needs to be regulated, when the flow rate which needs to be limited is smaller than the output flow rate of the hydraulic pump 1, the redundant flow rate returns to the hydraulic oil tank 2 through the opening of the three-way compensation type speed regulating valve 6 c.
Under the load dead weight, the lifting cylinder 11 returns oil from the speed regulating valve group 5A without a rod cavity through the two-way compensation type speed regulating valve 10b-a, the electromagnetic ball valve 8b-a, the three-way compensation type speed regulating valve 6b-a and the electromagnetic reversing valve 4A-T. The two-way compensation type speed regulating valve 10 is adjustable, the falling speed of the load cab is adjusted, and the three-way compensation type speed regulating valve 6b-a is completely conducted.
When the load cab needs to be kept at a certain position, hydraulic oil at the load end is effectively blocked by the seat valve structure of the throttle valve 7 and the ball valve structure of the electromagnetic ball valve, so that the load cab is kept. If the hydraulic pump 1 is in an operating state, the hydraulic oil at the outlet returns to the hydraulic oil tank 2 through the electromagnetic directional valve 4P-B, so that the hydraulic pump 1 is unloaded.
When the load cab is in a lifting state and the electromagnetic valve fails and cannot fall due to system faults, the throttle valve 7 can be manually adjusted, so that hydraulic oil on the load side returns to the hydraulic oil tank 2 from the opening of the speed regulation valve group 5T through the throttle valve 7, and the load cab falls back.
Claims (3)
1. A crane cab lifting hydraulic system is characterized in that: the hydraulic control system comprises a hydraulic pump (1), a hydraulic oil tank (2), an overflow valve (3), an electromagnetic reversing valve (4), a speed regulating valve group (5) and a lifting oil cylinder (11) for lifting a cab; the speed regulating valve group (5) comprises a three-way compensation type speed regulating valve (6), a throttle valve (7), an electromagnetic ball valve (8), a one-way valve (9) and a two-way compensation type speed regulating valve (10); an oil outlet of the hydraulic pump (1) is connected with a P port of the electromagnetic directional valve (4) and is connected with the overflow valve (3) in parallel; an A port of the electromagnetic reversing valve (4) is connected with a P port of the speed regulating valve group (5); the electromagnetic reversing valve (4) is provided with a B port, a T port and a T port of the speed regulating valve group (5) which are connected with a rodless cavity of the jacking cylinder (11) and return to the hydraulic oil tank (2).
2. The lift hydraulic system of a crane cab as defined in claim 1, wherein: the hydraulic pump (1) is a quantitative gear pump; the overflow valve (3) is a direct-acting constant-pressure overflow valve; the electromagnetic reversing valve (4) is a two-position four-way plate type slide valve; the speed regulation valve group (5) is a threaded cartridge valve group; the jacking cylinders (11) are single-acting hydraulic cylinders, and the two jacking cylinders lift the cab.
3. A crane cab lifting hydraulic system according to claim 1 or 2, characterized in that: the three-way compensation type speed regulating valve (6), the throttle valve (7) and the two-way compensation type speed regulating valve (10) integrated by the speed regulating valve group (5) are manually adjustable, the passing flow is set, and the throttle valve (7) has a locking function when being closed; the electromagnetic ball valve (8) is a two-position two-way valve, and the initial position has a locking function through a ball valve structure; the one-way valve (9) has a locking function for reversing the cone valve structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320407908.9U CN219526061U (en) | 2023-03-07 | 2023-03-07 | Crane cab lifting hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320407908.9U CN219526061U (en) | 2023-03-07 | 2023-03-07 | Crane cab lifting hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219526061U true CN219526061U (en) | 2023-08-15 |
Family
ID=87584723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320407908.9U Active CN219526061U (en) | 2023-03-07 | 2023-03-07 | Crane cab lifting hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219526061U (en) |
-
2023
- 2023-03-07 CN CN202320407908.9U patent/CN219526061U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE10307346A1 (en) | valve assembly | |
| CN100441885C (en) | Hydraulic balance valve capable of automatically adapting load change | |
| CN216554696U (en) | Integrated valve group for controlling action of hydraulic oil cylinder | |
| CN109399483A (en) | A kind of water brake and release control system of meeting an urgent need | |
| CN104444816B (en) | The hydraulic control system of a kind of hoisting machinery and hoisting machinery | |
| CN219526061U (en) | Crane cab lifting hydraulic system | |
| CN213017021U (en) | Hydraulic slip control valve group | |
| CN205260464U (en) | Energy -saving anchor windlass valve unit | |
| CN2172364Y (en) | Pressure adaptation multi-way orientable valve | |
| CN107061377B (en) | A kind of heavy duty lifting electrohydraulic control system | |
| CN113757207A (en) | Load-sensitive scissor-fork type aerial work vehicle and hydraulic control system thereof | |
| CN107504000B (en) | Multi-way reversing device of lorry-mounted crane | |
| CN108483264B (en) | The hydraulic control system and hoisting machinery of hoisting machinery | |
| DE4313250C2 (en) | Hydraulic control device | |
| CN219345110U (en) | Hydraulic control system of lifting mechanism and lifting system | |
| CN205918671U (en) | Two board -like clapper die spotting press lift in -process hydraulic pressure protection return circuit | |
| CN208456942U (en) | A kind of hydraulic workover unit weight load switching system | |
| CN203319558U (en) | Arm frame motion control system | |
| CN219262821U (en) | Manual reversing multi-way valve for loader | |
| CN220596889U (en) | Steel strand jack with accurate alignment slow release system | |
| CN219865676U (en) | High-altitude operation equipment and hydraulic amplitude changing system thereof | |
| CN112408200B (en) | Lifting system of crane | |
| CN218560969U (en) | Lifting power system | |
| RU190777U1 (en) | HYDRAULIC DRIVE OF TURNING ARROW OF A SHIP CRANE | |
| CN212744541U (en) | Low-power-consumption flow self-adaptive hydraulic position closed-loop control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |