CN212669104U - Hydraulic system of full-hydraulic steel coil voltage transformation lifting platform - Google Patents
Hydraulic system of full-hydraulic steel coil voltage transformation lifting platform Download PDFInfo
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- CN212669104U CN212669104U CN202021021560.2U CN202021021560U CN212669104U CN 212669104 U CN212669104 U CN 212669104U CN 202021021560 U CN202021021560 U CN 202021021560U CN 212669104 U CN212669104 U CN 212669104U
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Abstract
The utility model relates to a hydraulic system of a full-hydraulic steel coil variable-pressure lifting platform, which comprises a hydraulic pump, an oil tank, a lifting oil cylinder, a lifting multi-way reversing valve, an oil drainage multi-way reversing valve, a one-way valve opening and closing multi-way reversing valve, a hydraulic control one-way valve and a one-way pressure reducing valve; the P port of the lifting multi-way reversing valve is connected with a hydraulic pump, the T port is connected with an oil tank, the A port is connected with a rodless cavity of a lifting oil cylinder, and the B port is connected with a rod cavity of the lifting oil cylinder; the hydraulic control one-way valves are divided into a left group and a right group, the port A of the hydraulic control one-way valve on the left side is connected with an oil tank, the port B is connected with a rodless cavity of the lifting oil cylinder, the port A of the hydraulic control one-way valve on the right side is connected with the port A of the lifting multi-way reversing valve, and the port B is connected with the rodless cavity of the lifting oil cylinder; the P port of the one-way valve opening and closing multi-way reversing valve is connected with a hydraulic pump, the T port is connected with an oil tank, and two working ports A and B are respectively connected with the X ports of 2 hydraulic control one-way valves; the P port of the oil-drainage multi-way reversing valve is connected with an oil-drainage port of the one-way pressure-reducing valve, the T port is closed, and the A port is connected with an oil tank. The utility model discloses can improve the mobility and the operating efficiency of lift platform, reduce manufacturing cost.
Description
Technical Field
The utility model relates to a full-hydraulic coil of strip vary voltage lifting platform hydraulic system belongs to hydraulic equipment technical field.
Background
With the rapid development of modern industry in China, steel rolling enterprises put higher requirements on the conveying time, the conveying capacity and the safety of raw materials, finished products and semi-finished products required by production. Because the hydraulic system of the traditional full-hydraulic steel coil voltage transformation lifting platform has design defects, the existing steel coil lifting platform has complex structure, poor maneuverability, low operation efficiency and higher cost, and the popularization and the use of the full-hydraulic steel coil voltage transformation lifting platform are seriously restricted, so that a new hydraulic system is necessary to be designed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hydraulic system of full-hydraulic coil of strip vary voltage lift platform when reducing full-hydraulic coil of strip vary voltage lift platform manufacturing cost, improves lift platform's mobility and operating efficiency.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the hydraulic system of the full-hydraulic steel coil variable-pressure lifting platform comprises a hydraulic pump, an oil tank, a lifting oil cylinder, a lifting multi-way directional valve, an oil drainage multi-way directional valve, a one-way valve opening and closing multi-way directional valve, a hydraulic control one-way valve and a one-way pressure reducing valve; the P port of the lifting multi-way reversing valve is connected with a hydraulic pump, the T port is connected with an oil tank, the A port is connected with a rodless cavity of a lifting oil cylinder, and the B port is connected with a rod cavity of the lifting oil cylinder; the hydraulic control one-way valves are divided into a left group and a right group, the port A of the hydraulic control one-way valve on the left side is connected with an oil tank, the port B is connected with a rodless cavity of the lifting oil cylinder, the port A of the hydraulic control one-way valve on the right side is connected with the port A of the lifting multi-way reversing valve, and the port B is connected with the rodless cavity of the lifting oil cylinder; the port P of the one-way valve opening and closing multi-way reversing valve is connected with a hydraulic pump, the port T is connected with an oil tank, and two working ports A and B are respectively connected with ports X of 2 hydraulic control one-way valves; the P port of the oil drainage multi-way reversing valve is connected with an oil drainage port of the one-way pressure reducing valve, the T port is closed, and the A port is connected with an oil tank.
The hydraulic system of the full-hydraulic steel coil pressure-varying lifting platform further comprises an oil supplementing valve, wherein the oil supplementing valve is arranged on a pipeline between a rod cavity of the lifting oil cylinder and the oil tank; the lifting oil cylinders are divided into two groups, rodless cavities of the two groups of lifting oil cylinders are connected in parallel and then connected with an opening A of the lifting multi-way reversing valve, and rod cavities of the two groups of lifting oil cylinders are connected in parallel and then connected with an opening B of the lifting multi-way reversing valve.
In the hydraulic system of the full-hydraulic steel coil pressure-varying lifting platform, an oil return filter and a one-way valve are arranged on a pipeline between a T port of the lifting multi-way directional valve and an oil tank, wherein the T port of the lifting multi-way directional valve and the one-way valve open and close the multi-way directional valve; and an oil return filter and a one-way valve are arranged on a pipeline between the port A of the oil drainage multi-way reversing valve and the oil tank.
In the hydraulic system of the full-hydraulic steel coil voltage transformation lifting platform, the pipeline between the rodless cavity of the lifting oil cylinder and the oil tank is provided with the overload protection valve.
In the hydraulic system of the full-hydraulic steel coil pressure-varying lifting platform, a back pressure valve is arranged on a pipeline between the one-way valve opening and closing multi-way reversing valve and the left hydraulic control one-way valve; a one-way pressure reducing valve is arranged on a pipeline between the lifting multi-way reversing valve and the hydraulic pump.
According to the hydraulic system of the full-hydraulic steel coil variable-pressure lifting platform, the butterfly valve is arranged on the pipeline between the hydraulic oil inlet of the hydraulic pump and the oil tank, and the butterfly valve, the high-pressure filter and the pressure gauge are arranged on the pipeline of the hydraulic oil outlet of the hydraulic pump.
The utility model has the advantages that:
the utility model discloses a brand-new hydraulic structure, through controlling lift multichannel switching-over valve, realize the steady rising and the decline of coil of strip, open and close multichannel switching-over valve through controlling the check valve, the opening and close of control liquid accuse check valve, and then realize when lift multichannel switching-over valve stop work, the coil of strip can descend in the unsteady of allowwing within range of lift, through controlling the multichannel switching-over valve of draining, realize that the coil of strip lifts the switching between high pressure control return circuit and the low pressure control return circuit.
The hydraulic system not only has the functions of high-pressure lifting, low-pressure lifting and floating descending, but also has good maneuverability, and can effectively improve the operating efficiency of the lifting platform. Furthermore, the utility model discloses still have simple structure, low cost, convenient operation, advantage such as operation is reliable can satisfy the requirement of special operation operating mode.
Drawings
FIG. 1 is a schematic diagram of the present invention;
the reference numbers in the figures are as follows: 1-a butterfly valve; 2-a hydraulic pump; 3-a high pressure filter; 4-a pressure gauge; 5-one-way pressure relief valve; 6-lifting multi-way reversing valves; 7-opening and closing the multi-way reversing valve by the one-way valve; 8-oil supplement valve; 9-a hydraulic control one-way valve; 10-a lifting oil cylinder; 11-back pressure valve; 12-an overload protection valve; 13-oil drainage multi-way reversing valve; 14-a one-way valve; 15-return oil filter; 16-oil tank.
Detailed Description
The utility model discloses an overcome the defect that traditional full-hydraulic coil of strip vary voltage lift platform hydraulic system exists, provide a hydraulic system that is used for full-hydraulic coil of strip vary voltage lift platform, this system not only the cost is reduced has improved coil of strip vary voltage lift platform's work efficiency, has promoted coil of strip vary voltage lift platform's mobility moreover simultaneously.
Referring to fig. 1, the utility model mainly comprises a hydraulic pump 2, an oil tank 16, a lift cylinder 10, a lift multi-way directional valve 6, an oil drain multi-way directional valve 13, a one-way valve opening and closing multi-way directional valve 7, a hydraulic control one-way valve 9 and a one-way pressure reducing valve 5; wherein the lifting oil cylinder 10, the lifting multi-way reversing valve 6, the one-way valve opening and closing multi-way reversing valve 7 and the hydraulic control one-way valve 9 form a lifting hydraulic system; the lifting oil cylinders 10 are divided into two groups, rodless cavities of the two groups of lifting oil cylinders 10 are connected in parallel and then connected with the port A of the lifting multi-way reversing valve 6, and rod cavities of the two groups of lifting oil cylinders 10 are connected in parallel and then connected with the port B of the lifting multi-way reversing valve 6; the P port of the lifting multi-way reversing valve 6 is connected with the hydraulic pump 2, and the T port is connected with the oil tank 16; the hydraulic control one-way valves 9 are 2 groups, the port A of the hydraulic control one-way valve 9 on the right side is connected with the port A of the lifting multi-way reversing valve 6, and the port B is connected with a rodless cavity of the lifting oil cylinder 10; the P port of the one-way valve opening and closing multi-way reversing valve 7 is connected with the hydraulic pump 2, the T port is connected with the oil tank 16, and the working port B is connected with the X port of the right hydraulic control one-way valve 9; the lifting oil cylinders 10, the one-way valve opening and closing multi-way reversing valve 7 and the left hydraulic control one-way valve 9 form a floating descending hydraulic system, rodless cavities of the two groups of lifting oil cylinders 10 are connected in parallel and then connected with a port B of the left hydraulic control one-way valve 9, a port A of the left hydraulic control one-way valve 9 is connected with an oil tank 16, a port B is connected with a rodless cavity of the lifting oil cylinder 10, a port P of the one-way valve opening and closing multi-way reversing valve 7 is connected with the hydraulic pump 2, a port T is connected with the oil tank 16, and a working port A is connected with a; an oil return filter 15 is arranged on a pipeline between a T port of the lifting multi-way directional valve 6 and a pipeline between a T port of the one-way valve opening and closing multi-way directional valve 7 and the oil tank 16, an oil return filter 15 is arranged on a pipeline between an A port of the oil drainage multi-way directional valve 13 and the oil tank 16, a butterfly valve 1, a high-pressure filter 3 and a pressure gauge 4 are arranged at a hydraulic oil outlet of the hydraulic pump 2, and the butterfly valve 1 is arranged at a hydraulic oil inlet of the hydraulic pump 2;
fig. 1 shows that an overload protection valve 12 is provided between the rodless chamber of the lift cylinder 10 and the oil tank 16 to prevent hydraulic failure due to overload; the oil supplementing valve 8 is connected between a rod cavity of the lifting oil cylinder 10 and the oil tank 16 to form a steel coil rapid descending oil supplementing loop; the check valves 14 on the right side are arranged on a pipeline on which a T port of the lifting multi-way directional valve 6, a T port of the check valve opening and closing multi-way directional valve 7 and an oil tank 16 are connected to form a one-way hydraulic loop, and the check valve 14 on the left side is arranged on a pipeline on which an A port of the oil drainage multi-way directional valve 13 and the oil tank 16 are connected to form a one-way hydraulic loop; the oil drainage multi-way reversing valve 13 is arranged between the one-way pressure reducing valve 5 and the oil tank 16 to form a steel coil lifting high-low pressure control loop; the one-way pressure reducing valve 5 is arranged between the hydraulic pump 2 and the lifting multi-way reversing valve 6 to form a steel coil lifting pressure reducing control loop. The hydraulic control type oil cylinder lifting device comprises two groups of lifting oil cylinders 10, two groups of lifting multi-way reversing valves 6, two groups of overload protection valves 12, two groups of check valves 14, two groups of one-way reducing valves 6, two groups of high-pressure filters 3, two groups of oil return filters 15, one group of oil supplementing valves 8, two groups of hydraulic control one-way valves 9 and one group of oil drainage multi-way reversing valves 13.
The left hydraulic control one-way valve 9 is arranged on a pipeline between the oil tank 16 and the lifting oil cylinder 10 to form a steel coil floating descending locking control loop; the right hydraulic control one-way valve 9 is arranged on a pipeline between the lifting multi-way reversing valve 6 and the lifting oil cylinder 10 to form a steel coil lifting locking control loop; the backpressure valve 11 is arranged between the left hydraulic control one-way valve 9 and the oil tank 16 to form a backpressure control loop; the one-way valve opening and closing multi-way reversing valve 7 is arranged between the hydraulic pump 2 and the left hydraulic control one-way valve 9 to form a steel coil floating descending control loop; wherein, the back pressure valve 11 is a group, and the check valve opens and closes the multichannel reversing valve 7 is a group.
In fig. 1, the solid line represents a main control oil passage, and the broken line represents a pilot control oil passage and a drain oil passage.
In the embodiment, the model of the one-way pressure reducing valve 5 is DR 30-5-5X/XXXY;
the lifting multi-way reversing valve 6 has the model of 4WRZ 25W 8-325-7X/6 EG24N 9ETK4/D3V,
The model 7 of the one-way valve opening and closing multi-way reversing valve is 4WE6J 6X/EG24N9K 4;
the model of the oil supplementing valve 8 is 0811001020;
the model of the hydraulic control one-way valve 9 is SL30PA 1-4X;
the backpressure valve 11 is DBDS20 PX/XXX;
the model of the oil-release multi-way reversing valve 13 is 4WE6Y6X/EG24N9K4
The model of the high-pressure filter 3 is LC 6-100-5;
the overload protection valve 12 is of the type DBDS20 PX/XXX;
the one-way valve 14 is 0811001020;
the model of the oil return filter 15 is RFLDBN/HC1320CAT3D1. X-Y;
when the lifting multi-way reversing valve 6 is operated, the right side of the lifting multi-way reversing valve 6 is electrified when a steel coil is required to ascend, so that the steel coil stably ascends; when the steel coil is required to descend, the lifting multi-way reversing valve 6 and the one-way valve are operated to open and close the multi-way reversing valve 7 at the same time, so that the left side of the lifting multi-way reversing valve 6 is electrified, and the left side of the one-way valve opening and closing multi-way reversing valve 7 is electrified, so that the steel coil descends stably; when the steel coil is required to float and descend within the allowable lifting range, the multi-way reversing valve 7 is opened and closed by operating the one-way valve, so that the right side of the one-way valve opening and closing multi-way reversing valve 7 is electrified, and the floating and descending of the steel coil are realized; when steel coils with different weights need to be lifted, the oil drainage multi-way reversing valve 13 is operated to lose electricity, so that the switching of the lifting of the steel coils between the low-voltage control loop and the high-voltage control loop is realized.
Claims (6)
1. Full-hydraulic steel coil variable-pressure lifting platform hydraulic system is characterized in that: the hydraulic control system comprises a hydraulic pump (2), an oil tank (16), a lifting oil cylinder (10), a lifting multi-way directional valve (6), an oil drainage multi-way directional valve (13), a one-way valve opening and closing multi-way directional valve (7), a hydraulic control one-way valve (9) and a one-way pressure reducing valve (5); a P port of the lifting multi-way reversing valve (6) is connected with the hydraulic pump (2), a T port is connected with the oil tank (16), an A port is connected with a rodless cavity of the lifting oil cylinder (10), and a B port is connected with a rod cavity of the lifting oil cylinder (10); the hydraulic control one-way valves (9) are divided into a left group and a right group, the port A of the hydraulic control one-way valve (9) on the left side is connected with the oil tank (16), the port B is connected with the rodless cavity of the lifting oil cylinder (10), the port A of the hydraulic control one-way valve (9) on the right side is connected with the port A of the lifting multi-way reversing valve (6), and the port B is connected with the rodless cavity of the lifting oil cylinder (10); the P port of the one-way valve opening and closing multi-way reversing valve (7) is connected with the hydraulic pump (2), the T port is connected with the oil tank (16), and the two working ports A and B are respectively connected with the X ports of 2 hydraulic control one-way valves (9); and a P port of the oil drainage multi-way reversing valve (13) is connected with an oil drainage port of the one-way reducing valve (5), a T port is closed, and an A port is connected with an oil tank (16).
2. The hydraulic system of the full hydraulic steel coil pressure varying lifting platform of claim 1, wherein: the oil supplementing valve (8) is arranged on a pipeline between a rod cavity of the lifting oil cylinder (10) and the oil tank (16); the lifting oil cylinders (10) are divided into two groups, rodless cavities of the two groups of lifting oil cylinders (10) are connected in parallel and then connected with an A port of the lifting multi-way reversing valve (6), and rod cavities are connected in parallel and then connected with a B port of the lifting multi-way reversing valve (6).
3. The hydraulic system of the full hydraulic steel coil pressure varying lifting platform of claim 1, wherein: an oil return filter (15) and a one-way valve (14) are arranged on a pipeline between a T port of the lifting multi-way reversing valve (6) and a pipeline between a T port of the one-way valve opening and closing multi-way reversing valve (7) and an oil tank (16); an oil return filter (15) and a one-way valve (14) are arranged on a pipeline between the port A of the oil drainage multi-way reversing valve (13) and the oil tank (16).
4. The hydraulic system of the full hydraulic steel coil pressure varying lifting platform of claim 1, wherein: and an overload protection valve (12) is arranged on a pipeline between a rodless cavity of the lifting oil cylinder (10) and the oil tank (16).
5. The hydraulic system of the full hydraulic steel coil pressure varying lifting platform of claim 1, wherein: a back pressure valve (11) is arranged on a pipeline between the one-way valve opening and closing multi-way reversing valve (7) and the left hydraulic control one-way valve (9); a one-way pressure reducing valve (5) is arranged on a pipeline between the lifting multi-way reversing valve (6) and the hydraulic pump (2).
6. The hydraulic system of the full hydraulic steel coil pressure varying lifting platform of claim 1, wherein: be equipped with butterfly valve (1) on the pipeline between hydraulic oil import and oil tank (16) of hydraulic pump (2), be equipped with butterfly valve (1), high pressure filter (3) and manometer (4) on the pipeline of hydraulic pump (2) hydraulic oil export.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021021560.2U CN212669104U (en) | 2020-06-06 | 2020-06-06 | Hydraulic system of full-hydraulic steel coil voltage transformation lifting platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021021560.2U CN212669104U (en) | 2020-06-06 | 2020-06-06 | Hydraulic system of full-hydraulic steel coil voltage transformation lifting platform |
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| Publication Number | Publication Date |
|---|---|
| CN212669104U true CN212669104U (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021021560.2U Active CN212669104U (en) | 2020-06-06 | 2020-06-06 | Hydraulic system of full-hydraulic steel coil voltage transformation lifting platform |
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|---|---|
| CN (1) | CN212669104U (en) |
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- 2020-06-06 CN CN202021021560.2U patent/CN212669104U/en active Active
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