CN108738331B - Hydraulic device lifts fast - Google Patents

Hydraulic device lifts fast Download PDF

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Publication number
CN108738331B
CN108738331B CN201780000321.3A CN201780000321A CN108738331B CN 108738331 B CN108738331 B CN 108738331B CN 201780000321 A CN201780000321 A CN 201780000321A CN 108738331 B CN108738331 B CN 108738331B
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China
Prior art keywords
oil
way
valve
rod cavity
lifting
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CN201780000321.3A
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CN108738331A (en
Inventor
熊华运
梁上愚
于隽
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Jiangsu Cadro Hydraulic Equipment Co ltd
SHENZHEN CADRO HYDRAULIC EQUIPMENT CO Ltd
Original Assignee
Jiangsu Cadro Hydraulic Equipment Co ltd
SHENZHEN CADRO HYDRAULIC EQUIPMENT CO Ltd
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Publication of CN108738331A publication Critical patent/CN108738331A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20Other details, e.g. assembly with regulating devices
    • F15B15/22Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke

Abstract

A quick lifting device comprises a lifting oil cylinder (1), a combined valve block (2), a rod cavity oil way (4), a rodless cavity oil way (5) and an oil supply mechanism (3), wherein the lifting oil cylinder (1) comprises a rod cavity and a rodless cavity, the combined valve block (2) comprises a one-way stop valve and a two-way stop valve, the oil supply mechanism (3) comprises an oil pump and an oil tank, and the oil pump is arranged on an external oil connection way of the oil tank and used for pumping oil; in the lifting state: the oil pump is connected with one end of the two-way stop valve through an oil way; the oil pump is connected with the rod cavity through a rod cavity oil way (4), and the other end of the two-way stop valve is connected with the rodless cavity through a rodless cavity oil way (5); in the descending state: the oil pump is connected with the rod cavity through a rod cavity oil way (4), the rodless cavity is connected with the oil inlet end of the one-way stop valve through a rodless cavity oil way (5), and the oil outlet end of the one-way stop valve is connected with the oil tank through an oil way. The rapid lifting device has the advantage of greatly improving the lifting speed.

Description

Hydraulic device lifts fast
Technical Field
The invention belongs to the field of hydraulic pressure, and particularly relates to a hydraulic device with improved lifting efficiency.
Background
The common hydraulic lifting device comprises a lifting oil cylinder, an oil way and an oil tank, wherein in the using process, the oil tank fills hydraulic oil to one end of the oil cylinder to push a piston rod, and the other end of the oil cylinder returns the hydraulic oil to the oil tank.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a hydraulic device for improving the lifting efficiency.
The technical scheme of the invention is as follows:
a quick lifting device comprises a lifting oil cylinder, a combined valve block, a rod cavity oil way, a rodless cavity oil way and an oil supply mechanism, wherein the lifting oil cylinder comprises a rod cavity and a rodless cavity; in the lifting state: the oil pump is connected with one end of the bidirectional stop valve through an oil way; the oil pump is connected with the rod cavity through the rod cavity oil way, and the other end of the bidirectional stop valve is connected with the rodless cavity through the rodless cavity oil way; in the descending state: the oil pump is connected with the rod cavity through a rod cavity oil way, the rodless cavity is connected with the oil inlet end of the one-way stop valve through a rodless cavity oil way, and the oil outlet end of the one-way stop valve is connected with the oil tank through an oil way.
The oil path between the oil pump and the two-way stop valve and the rod cavity oil path are connected to an external oil path at the oil outlet end of the oil pump.
The lifting oil cylinders are provided with one group.
The rapid lifting device comprises at least two groups of lifting oil cylinders, wherein each group of lifting oil cylinders are arranged in parallel, the rapid lifting device further comprises a multi-channel synchronizer, the multi-channel synchronizer is arranged on the rodless cavity oil path, and the multi-channel synchronizer is respectively communicated with the rodless cavity of each lifting oil cylinder through the oil path; in a lifting state, the multi-channel synchronizer is connected with the two-way stop valve through the rodless cavity oil way; in a descending state, the multi-channel synchronizer is connected with the one-way stop valve through the rodless cavity oil way.
The oil supply mechanism further comprises a one-way valve, and the one-way valve is arranged on an external oil way at the oil outlet end of the oil pump.
The quick lifting hydraulic device further comprises an overflow valve, the overflow valve comprises an overflow valve and overflow pipelines, the overflow pipelines are arranged at two ends of the overflow valve, one end of each overflow pipeline is connected with an external oil circuit of the outlet of the corresponding one-way valve, and the other end of each overflow valve is connected with the oil tank.
And the overflow valve pipeline and the pipeline between the one-way stop valve and the oil tank are connected to an external pipeline of the oil tank.
The quick lifting hydraulic device further comprises a throttle valve, the throttle valve is arranged on the rod cavity oil circuit, and one end of the throttle valve is connected with a collecting pipeline of the multi-channel synchronizer through the rod cavity oil circuit; in a lifting state, the other end of the throttle valve is connected with the bidirectional shutoff valve through the rod cavity oil way; and in a descending state, the other end of the throttle valve is connected with an inlet of the one-way throttle valve through the oil way with the rod cavity.
The hydraulic device for quickly lifting further comprises a first hydraulic quick-change plug and a second hydraulic quick-change plug, and the first hydraulic quick-change plug is arranged on the oil path of the rod cavity; the second hydraulic quick-change plug is arranged on the rodless cavity oil way.
The technical advantage of this scheme lies in, promotes lifting efficiency of lifting device greatly.
Drawings
FIG. 1 is a schematic diagram of the piping of the present invention.
The reference numbers are as follows:
1-lifting oil cylinder, 2-combined valve block, 3-oil supply mechanism, 4-oil circuit with rod cavity and 5-oil circuit without rod cavity.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A quick lifting device comprises a lifting oil cylinder 1, a combined valve block 2, a rod cavity oil way 4, a rodless cavity oil way 5 and an oil supply mechanism 3, wherein the lifting oil cylinder 1 comprises a rod cavity and a rodless cavity, the combined valve block 2 comprises a one-way stop valve and a two-way stop valve, the oil supply mechanism 3 comprises an oil pump and an oil tank, and the oil pump is arranged on an external oil way of the oil tank and used for pumping oil; in the lifting state: the oil pump is connected with one end of the bidirectional stop valve through an oil way; the oil pump is connected with the rod cavity through the rod cavity oil way 4, and the other end of the bidirectional stop valve is connected with the rodless cavity through the rodless cavity oil way 5; in the descending state: the oil pump is connected with the rod cavity through a rod cavity oil way 4, the rodless cavity is connected with the oil inlet end of the one-way stop valve through a rodless cavity oil way 5, and the oil outlet end of the one-way stop valve is connected with the oil tank through an oil way.
Specifically, the rod cavity oil path 4 extends from the oil outlet end of the oil pump to the rod cavity and one end of the two-way stop valve, and the rodless cavity oil path 5 extends from the rodless cavity oil path 5 from the rodless cavity to the other end of the two-way stop valve and the oil inlet end of the one-way stop valve. In a lifting state, the two-way stop valve is in an open state, the one-way stop valve is in a closed state, hydraulic oil flows from the mailbox and the rod cavity to the rodless cavity through the oil way simultaneously, and a piston rod of the lifting oil cylinder 1 is pushed and extruded towards the rod cavity rapidly; under the descending state, the two-way stop valve is in a closed state, the one-way stop valve is in an open state, hydraulic oil flows to the rod cavity from the oil tank, and meanwhile hydraulic oil in the rodless cavity flows back to the oil tank through the one-way stop valve. Meanwhile, when the pressure for lifting the articles is overlarge, the two-way stop valve is closed, and hydraulic oil is prevented from flowing back from the rodless cavity to the rod cavity.
Furthermore, an oil path between the oil pump and the two-way stop valve and the rod cavity oil path 4 are connected to an external oil path at the oil outlet end of the oil pump.
Furthermore, the lifting oil cylinder is provided with a group.
The scheme has the advantages that: the lifting oil cylinder oil circuit system is simple, and the overturning of the object to be carried caused by inconsistent lifting speeds of the oil cylinders is avoided.
Furthermore, at least two groups of lifting oil cylinders 1 are arranged, the multiple groups of lifting oil cylinders 1 are arranged in parallel, the rapid lifting device further comprises a multi-channel synchronizer, the multi-channel synchronizer is arranged on the rodless cavity oil way 5, and the multi-channel synchronizer is respectively communicated with the rodless cavity of each lifting oil cylinder 1 through the oil way; in a lifting state, the multi-channel synchronizer is connected with the two-way stop valve through the rodless cavity oil way 5; in a descending state, the multi-channel synchronizer is connected with the one-way stop valve through the rodless cavity oil way 5.
Specifically, the rod cavity oil circuit 4 is respectively connected with each rod cavity through a shunt oil circuit, similarly, the multichannel synchronizer is also connected with the rodless cavity oil circuit 5 through an internal shunt oil circuit or an external shunt oil circuit, and each rodless cavity is also connected with the multichannel synchronizer through an oil circuit.
Further, the oil supply mechanism 3 further comprises a one-way valve, and the one-way valve is arranged on an external oil circuit at the oil outlet end of the oil pump.
The technical scheme has the advantages that: prevent hydraulic oil from understanding the backward flow of the oil pump.
Furthermore, the hydraulic device for rapid lifting further comprises an overflow valve, the overflow valve comprises an overflow valve and an overflow pipeline, the overflow pipeline is arranged at two ends of the overflow valve, one end of the overflow pipeline is connected with an external oil circuit at an outlet of the one-way valve, and the other end of the overflow valve is connected with the oil tank.
The technical scheme has the advantages that: stabilize the hydraulic pressure in the oil circuit.
Furthermore, the overflow valve pipeline and the pipeline between the one-way stop valve and the oil tank are connected to an external pipeline of the oil tank.
Furthermore, the hydraulic device for rapid lifting further comprises a throttle valve, the throttle valve is arranged on the oil path 4 with the rod cavity, and one end of the throttle valve is connected with a collecting pipeline of the multi-channel synchronizer through the oil path 4 with the rod cavity; in a lifting state, the other end of the throttle valve is connected with the bidirectional shutoff valve through the rod cavity oil way 4; and in a descending state, the other end of the throttle valve is connected with the inlet of the one-way throttle valve through the rod cavity oil passage 4.
The technical scheme has the advantages that: and the hydraulic pressure in the oil way is regulated and controlled by matching with the overflow valve.
The hydraulic device for quickly lifting further comprises a first hydraulic quick-change plug and a second hydraulic quick-change plug, wherein the first hydraulic quick-change plug is arranged on the rod cavity oil way 4; the second hydraulic quick-change plug is arranged on the rodless cavity oil way 5.
In particular, in the conventional use, the lifting oil cylinder 1, the oil supply mechanism 3 and the combined valve block 2 are frequently disassembled due to maintenance, equipment replacement, equipment movement and the like, and the technical scheme has the advantages that under the use scene that the quick lifting hydraulic device needs to be separated in a short time, hydraulic oil does not need to be drained, and the operation is simplified.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (8)

1. A quick lifting device is characterized in that: the oil-pumping device comprises a lifting oil cylinder, a combined valve block, a rod cavity oil way, a rodless cavity oil way, an oil supply mechanism, a first throttle valve, a second throttle valve and a multi-channel synchronizer, wherein the lifting oil cylinder comprises a rod cavity and a rodless cavity; the first throttling valve is arranged on an oil path with a rod cavity and communicated with the rod cavity, and the second throttling valve is arranged on an oil path without a rod cavity and communicated with a collecting pipeline of the multi-channel synchronizer;
in the lifting state: the oil pump is connected with the rod cavity through the rod cavity oil way and the first throttle valve, and is connected with one end of the two-way stop valve through the oil way; the other end of the two-way stop valve is connected with the rodless cavity through the rodless cavity oil way, the second throttle valve and the multi-channel synchronizer;
in the descending state: the oil pump is connected with the rod cavity through a rod cavity oil way; the rodless cavity is connected with the oil inlet end of the one-way stop valve through a multi-channel synchronizer, a second throttle valve and a rodless cavity oil way, and the oil outlet end of the one-way stop valve is connected with the oil tank through an oil way.
2. A rapid lifting device according to claim 1, characterized in that: the oil path between the oil pump and the two-way stop valve and the rod cavity oil path are connected to an external oil path at the oil outlet end of the oil pump.
3. A rapid lifting device according to claim 2, characterized in that: the lifting oil cylinders are provided with one group.
4. A rapid lifting device according to claim 2, characterized in that: the lifting oil cylinders are at least two groups, and the two groups of lifting oil cylinders are arranged in parallel.
5. A rapid lifting device according to any one of claims 1 to 4, characterized in that: the oil supply mechanism further comprises a one-way valve, and the one-way valve is arranged on an external oil way at the oil outlet end of the oil pump.
6. A rapid lifting device according to claim 5, characterized in that: the quick lifting device further comprises an overflow valve, the overflow valve comprises an overflow valve and an overflow pipeline, the overflow pipeline is arranged at two ends of the overflow valve, one end of the overflow pipeline is connected with an external oil circuit of the outlet of the one-way valve, and the other end of the overflow valve is connected with the oil tank.
7. A rapid lifting device according to claim 6, characterized in that: and the overflow pipeline is connected with an external pipeline of the oil tank through a pipeline between the one-way stop valve and the oil tank.
8. A rapid lifting device according to any one of claims 1 to 4, characterized in that: the quick lifting device also comprises a first hydraulic quick-change plug and a second hydraulic quick-change plug, and the first hydraulic quick-change plug is arranged on the oil path of the rod cavity; the second hydraulic quick-change plug is arranged on the rodless cavity oil way.
CN201780000321.3A 2017-02-21 2017-05-05 Hydraulic device lifts fast Active CN108738331B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201720159907.1U CN207961098U (en) 2017-02-21 2017-02-21 A kind of quickly lifting hydraulic device
CN2017201599071 2017-02-21
PCT/CN2017/083281 WO2018152971A1 (en) 2017-02-21 2017-05-05 Rapid lifting hydraulic device

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CN108738331A CN108738331A (en) 2018-11-02
CN108738331B true CN108738331B (en) 2020-06-23

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CN201780000321.3A Active CN108738331B (en) 2017-02-21 2017-05-05 Hydraulic device lifts fast

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WO (1) WO2018152971A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207961098U (en) * 2017-02-21 2018-10-12 深圳市凯卓立液压设备股份有限公司 A kind of quickly lifting hydraulic device
CN111664144B (en) * 2020-04-22 2022-11-22 武汉船用机械有限责任公司 Hydraulic system of bolt type lifting platform
CN112963397A (en) * 2021-03-31 2021-06-15 武汉海博瑞科技有限公司 Marine hydraulic lifting device for jacking heavy object and control method

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CN202245776U (en) * 2011-08-11 2012-05-30 三一汽车起重机械有限公司 Oil cylinder telescoping control device, elevator boom and hoisting machinery
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CN108738331A (en) 2018-11-02
CN207961098U (en) 2018-10-12

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