CN105805066A - Dual-motor type energy recovery bedstand for hydraulic net hauling winch - Google Patents

Abstract

The invention relates to a dual-motor hydraulic net hoisting winch energy recovery test bench, which is specially used for quality inspection and reliability testing of the hydraulic net hoisting winch. Including auxiliary pump, safety valve, three-position electro-hydraulic directional valve, proportional relief valve, large displacement loading motor, small displacement loading motor, torque meter, speed increase box, loading reel, hanger fixed pulley, flow meter and a pressure transmitter, characterized in that the test bench is in the form of dual-motor adjustment, taking the forward coiling condition of the hydraulic hoisting winch as a reference, the oil outlets of the dual loading motors are connected to the first branch, and the first branch One branch merges the oil circuit of the double loading motor into the oil inlet circuit of the hydraulic winch motor. In the actual test conditions, the energy recovery test bench adopting dual-motor adjustment can well solve the problem that the range of displacement of a single motor cannot meet the requirements of all system loading tests, and expand the range of displacement of the loading motor. It meets the test requirements of constant torque output and constant speed control of the system, and realizes energy recovery and reuse.

Description

Double-motor hydraulic winch energy recovery test bench

technical field

The invention relates to a test device for quality inspection and reliability testing of hydraulic net lifting winches and fishing boat net lifting equipment.

Background technique

The hydraulic net lifting winch is one of the important fishing equipment on the fishing boat. In view of the special working conditions of offshore fishing operations, there are not only high requirements on the functionality of the hydraulic net lifting winch, but also high reliability requirements on its performance. Therefore, the newly trial-manufactured hydraulic net lifting winch samples must pass performance tests and life durability tests. At the same time, the hydraulic net lifting winch must complete the relevant certification test before it can be shipped and used. The hydraulic net hoisting winch test bench is a special test device for life test and performance testing of hydraulic net hoisting winches. By simulating actual working conditions (mainly simulating wire rope tension and rope speed), the quality inspection of various types of hydraulic net hoisting winches is carried out. and reliability testing.

Based on the principle of energy recovery and reuse, the energy recovery test bench of the double-motor hydraulic net hoisting winch is studied, and the high-pressure oil output by the double-loading motors is recycled to realize energy recovery of the system. The energy recovery test system has high practical application value and economic value, and can be extended to other large hydraulic lifting equipment.

Because the single-motor hydraulic winch energy recovery test bench cannot fully meet the system loading requirements of the winch drum at rated constant torque and rated constant speed. The test bench adopting the dual-motor adjustment form can solve this problem very well, and expand the displacement range of the loading motor to make up for the shortcomings caused by the small displacement range of the single-motor adjustment system and meet the loading requirements of the system. .

Contents of the invention

The purpose of the present invention is to provide a dual-motor hydraulic net hoisting winch energy recovery test bench to solve the problem that the single motor hydraulic net hoisting winch energy recovery test bench cannot fully meet the system load of the winch drum working at rated constant torque and rated constant speed Requirements, while realizing energy recovery and reuse.

The present invention provides a dual-motor hydraulic net lifting winch energy recovery test bench, which is specially used for quality inspection and reliability testing of the hydraulic net lifting winch. The hydraulic net lifting winch 16 includes a hydraulic winch motor 7, a reduction box 10 and The winch drum 14, the hydraulic winch motor 7 is connected to the winch drum 14 through the reduction box 12, and the pipeline connected between the reduction box 12 and the winch drum 14 is provided with a rotational speed sensor 13; the dual-motor hydraulic winch energy recovery test bench includes The first auxiliary pump 1, the second auxiliary pump 2, the first proportional relief valve 6, the third proportional relief valve 18, the first branch, the second branch and the third branch, the second branch and the third After the branches are connected in parallel, they are connected to the first branch, and the first proportional relief valve 6 is set on the second branch to adjust the pressure of the first branch; the third proportional relief valve 18 is set on the third branch ; The first auxiliary pump 1 is connected to the first branch to replenish oil for the first branch; the test bench also includes a second proportional relief valve 17, a large displacement loading motor 8, a small displacement loading motor 19, a first Torque meter 9, second torque meter 20, speed increasing box 10, loading reel 11 and hanger fixed pulley 15. in:

The oil outlets of the large-displacement loading motor 8 and the small-displacement loading motor 19 are respectively connected to the first branch, and the first branch merges the oil circuits of the large-displacement loading motor 8 and the small-displacement loading motor 19 to the hydraulic winch In the oil inlet circuit of the motor 7, according to the efficiency characteristic curve of the loading motor, the displacement values of the large-displacement loading motor 8 and the small-displacement loading motor 19 of each layer are optimally combined, so that the large-displacement loading motor 8 and the small-displacement loading motor 19 maintains its high-efficiency range and meets the system loading requirements of constant torque output and constant speed control; the large-displacement loading motor 8 is connected to the gearbox 10 through the first torque meter 9, and the small-displacement loading motor 19 is connected through the first torque meter 9. The second torque meter 20 is connected to the speed increasing box 10; the speed increasing box 10 is connected to the loading reel 11, and the loading reel 11 is connected to the winch reel 14 through the fixed pulley block 15; the second auxiliary pump 2 is respectively connected to the large displacement loading motor 8 and the small The oil inlet of displacement loading motor 19 supplies oil for large displacement loading motor 8 and small displacement loading motor 19.

In the present invention, the third proportional overflow valve 18 is provided in the third branch, and is used in conjunction with the first proportional overflow valve 6 in the reverse rope-retracting working condition.

In the present invention, a flow meter F1 is also provided in the second branch, and the flow meter F1 is used to measure the overflow of the first proportional overflow valve 6 , and the measured value is used for the displacement control of the first auxiliary pump 1 .

In the present invention, the first port of the three-position electro-hydraulic reversing valve 5 is connected to the oil inlet ports of the large-displacement loading motor 8 and the small-displacement loading motor 19, the second port is connected to the second auxiliary pump 2, and the third port is connected to the hydraulic pump. Winch motor 7, the fourth port is connected to the second overflow valve 17; when the forward winding, the three-position electro-hydraulic reversing valve 5 is in the right position, and the second auxiliary pump 2 is fed to the large by the three-position electro-hydraulic reversing valve 5 The displacement is up to 8 horses and the small displacement loading motor 19 supplies oil at low pressure, while the output flow of the hydraulic winch motor 7 returns to the oil tank through the three-position electro-hydraulic reversing valve 5 and the second overflow valve 17; when the rope is retracted in the reverse direction , the three-position electro-hydraulic reversing valve 5 is in the left position, the second auxiliary pump 2 supplies low-pressure oil to the hydraulic winch motor 7 through the three-position electro-hydraulic reversing valve 5, and at the same time, the large displacement increases to 8 horses and the small displacement loads The flow output by the motor 19 returns to the fuel tank through the three-position electro-hydraulic reversing valve 5 and the second overflow valve 17.

In the present invention, a first pressure transmitter P ₁ is connected to the first branch, and the first pressure transmitter P ₁ is used to measure the pressure of the first branch.

In the present invention, the outlet of the hydraulic winch motor 7 is provided with a second pressure transmitter P ₂ , and the second pressure transmitter P ₂ is used to measure the outlet pressure of the hydraulic winch motor 7 when coiling in the forward direction; When the rope is retracted, it is used to measure the outlet pressure of the second auxiliary pump 2, that is, the inlet pressure of the hydraulic winch motor 7.

In the present invention, the outlet pressure of the second auxiliary pump 2 is provided with a third pressure transmitter P ₃ , and the third pressure transmitter P ₃ is used to measure the outlet pressure of the second auxiliary pump 2 when coiling forward. , that is, the inlet pressure of the two loading motors; when the rope is reversed, it is used to measure the outlet pressure of the two loading motors. Judging whether the measured value of the _third pressure transmitter P3 produces a pressure pulse, and judging the change of the number of layers in the system, thereby changing the displacement values of the two loading motors.

The beneficial effects of the present invention are:

(1) Recycle the high-pressure oil output by the double-loaded motors to realize energy recovery of the system.

(2) Because the single-motor hydraulic winch energy recovery test bench cannot fully meet the system loading requirements of the winch drum at rated constant torque and rated constant speed. The test bench adopting the dual-motor adjustment form can solve this problem very well, and expand the displacement range of the loading motor to make up for the shortcomings caused by the small displacement range of the single-motor adjustment system and meet the loading requirements of the system. . (3) The energy recovery test system has high practical application value and economic value, and can be extended to other large hydraulic lifting equipment.

Description of drawings

Fig. 1 is the hydraulic system diagram of the energy recovery test bench of the dual-motor hydraulic net hoisting winch.

Labels in the figure: 1 - first auxiliary pump, 2 - second auxiliary pump, 3 - first safety valve, 4 - second safety valve, 5 - three-position electro-hydraulic directional valve, 6 - first proportional relief valve , 7-hydraulic winch motor, 8-large displacement loading motor, 9-first torque meter, 10-increase gearbox, 11-loading reel, 12-reduction gearbox, 13-speed sensor, 14-winch reel, 15-fixed pulley block of hanger, 16-hydraulic net hoisting winch, 17-second proportional relief valve, 18-third proportional relief valve, 19-small displacement loading motor, 20-second torque meter, F ₁ - Flowmeters, P ₁ , P ₂ and P ₃ - the first, second and third pressure transmitters respectively.

detailed description

The present invention will be further described according to the accompanying drawings and in conjunction with the following specific embodiments.

Example 1:

As shown in Figure 1, when the first auxiliary pump 1 is performing a hydraulic winch test, the high-pressure oil supplied by the first auxiliary pump 1 is mainly used to supplement the hydraulic winch motor 7, the large-displacement loading motor 8 and the small-displacement loading motor 19 and the overflow of the first proportional overflow valve 6 or the third proportional overflow valve 18. By adjusting the oil supply pressure of the first auxiliary pump 1, the pulling force of the wire rope can be adjusted.

When the second auxiliary pump 2 is coiling in the forward direction, the first auxiliary pump 2 supplies low-pressure oil for the large-displacement loading motor 8 and the small-displacement loading motor 19 to promote the forward operation of the entire system; An auxiliary pump 2 supplements low-pressure oil for the hydraulic winch motor 7 to push the entire system to run in reverse. Its outlet pressure is determined by the operating resistance of the system. By adjusting the output flow of the first auxiliary pump 2, the rotational speed of the hydraulic winch motor 7 can be adjusted, thereby adjusting the coiling speed of the wire rope.

The first safety valve 3 is used to protect the first auxiliary pump 1 . The second safety valve 4 is used to protect the second auxiliary pump 2 .

The three-position electro-hydraulic reversing valve 5 is used for switching between two working conditions of forward coiling and reverse coiling. When coiling in the forward direction, the three-position electro-hydraulic reversing valve 5 is in the right position; when the rope is retracted in the reverse direction, the three-position electro-hydraulic reversing valve 5 is in the left position.

The first proportional overflow valve 6 makes the outlet pressure of the first auxiliary pump 1 equal to its set pressure by maintaining a small flow overflow. Adjusting the setting pressure of the first proportional relief valve 6 can adjust the outlet pressure of the first auxiliary pump 1, that is, the pressure of the first branch, and then adjust the tension of the wire rope.

Large-displacement loading motor 8 carries horses and small-displacement loading motor 19 selects the variable motor of electro-hydraulic proportional control. When coiling in the forward direction, the two loading motors are used as the system load, the oil inlet pressure is the outlet pressure of the second auxiliary pump 2, and the oil outlet pressure (set by the first proportional relief valve 6) is the hydraulic winch motor 7's oil inlet pressure. When the rope is retracted in reverse, the oil inlet pressure of the two loading motors (set by the first proportional relief valve 6 or the third proportional relief valve 18) is the oil outlet pressure of the hydraulic winch motor 7, and its oil outlet pressure It is determined by the setting pressure of the second proportional relief valve 17. The displacement values of the two loading motors are optimally determined according to the loading requirements of the system.

The first torque meter 9 is installed between the gear box 10 and the large-displacement loading motor 8 for detecting the rotational speed and torque of the large-displacement loading motor 8 .

Speed-up box 10 is installed between two loading motors and winch reel 14, and its speed-up ratio is determined according to the rotating speed of the two high-speed shafts of speed-up box 10 not exceeding the maximum allowable speed of loading motor in the whole test process. When coiling in the forward direction, the hydraulic winch motor 7 decelerates and increases torque through the reduction box 12, drives the winch reel 14, then passes through the steel wire rope, passes through the hanger fixed pulley block 15, drives the loading reel 11, and speeds up and lowers through the speed increaser box 10. Twist to drive two loading motors. And when reverse rope receiving working condition, speed-up box 10 is made the usefulness of speed-down box.

The rotation speed sensor 13 is used to detect the rotation speed of the winch drum 14, and control the output flow of the second auxiliary pump 2, thereby controlling the speed of the wire rope.

The hydraulic net lifting winch 16 is mainly made up of hydraulic winch motor 7, reduction box 12, winch reel 14 etc.

The second proportional relief valve 17, when coiling in the forward direction, its set pressure is determined according to the minimum back pressure required by the hydraulic winch motor 7; Determined by back pressure.

The third proportional relief valve 18 generally does not work, its set pressure is higher than the set pressure of the first proportional relief valve 6, and it only works when the rope is reversed and the first auxiliary pump 1 is working at the minimum displacement. The set pressure is determined by the pulling force of the rope, and is lower than the set pressure of the first proportional overflow valve 6 .

The second torque meter 20 is installed between the gear box 10 and the small displacement loading motor 19 for detecting the rotational speed and torque of the small displacement loading motor 19 .

The flow meter F1 measures the overflow of the proportional overflow valve ₆ , and its measured value is used for the displacement control of the first auxiliary pump 1.

The _first pressure transmitter P1 is used to measure the pressure of the first branch.

The second pressure transmitter P ₂ is used to measure the outlet pressure of the hydraulic winch motor 7 when reeling in the forward direction; it is used to measure the outlet pressure of the second auxiliary pump 2, that is, the hydraulic winch motor, when the rope is rewound in the reverse direction 7 inlet pressure.

The third pressure transmitter P ₃ is used to measure the outlet pressure of the second auxiliary pump 2, that is, the inlet pressure of the two loading motors when the rope is coiled forward; it is used to measure the pressure of the two loading motors when the rope is reversed Outlet pressure. Judging whether the measured value of the _third pressure transmitter P3 produces a pressure pulse, and judging the change of the number of layers in the system, thereby changing the displacement values of the two loading motors.

Continuing to refer to Figure 1, the working process of the hydraulic system is as follows:

The working process of forward coiling is the main process of system testing. In this process, the system records the tension and speed of the wire rope to check whether the performance of the hydraulic net lifting winch meets the requirements; the working process of reverse winding is the secondary process of the system. In the functional working condition, the steel wire rope can be retracted in reverse to prepare for the next forward coiling working condition.

When the system is in the positive winding condition, the three-position electro-hydraulic reversing valve 5 is in the right position; the set pressure of the first proportional relief valve 6 is determined by the tension of the wire rope; the third proportional relief valve 18 does not work; The hydraulic winch motor 7 decelerates and increases torque through the reduction box 12, drives the winch reel 14, and then passes the steel wire rope, passes through the hanger fixed pulley block 15, drives the loading reel 11, and drives the two loading motors through the speed reduction box 10 to increase the torque. The flow output by the two loading motors is supplied to the hydraulic winch motor 7 through the first branch to realize positive energy recovery. The high-pressure oil supplied by the first auxiliary pump 1 is mainly used to supplement the discharge volume of the hydraulic winch motor 7, the large-displacement loading motor 8 and the small-displacement loading motor 19, and the overflow volume of the first proportional relief valve 6, through the flowmeter F ₁ Detect the overflow of the first proportional overflow valve 6, so as to adjust the displacement of the first auxiliary pump 1. The second auxiliary pump 2 supplements the low-pressure oil for the large-displacement loading motor 8 and the small-displacement loading motor 19 to promote the forward operation of the entire system. The displacement of the second auxiliary pump 2 is controlled by the rotational speed sensor 13, thereby controlling the speed of the wire rope. Judging whether the measured value of the _third pressure transmitter P3 produces a pressure pulse, judging the change of the number of layers in the system, and changing the displacement values of the two loading motors according to the optimized displacement values of the two loading motors at the corresponding layer number.

When the system is in the reverse rope-drawing condition, the three-position electro-hydraulic reversing valve 5 is in the left position; the set pressure of the first proportional relief valve 6 is determined according to the tension of the wire rope; the third proportional relief valve 18 is only in reverse When the rope is retracted and the first auxiliary pump 1 works at the minimum displacement, its set pressure is lower than the set pressure of the proportional relief valve 6 . The two loading motors are decelerated by the speed-up box 10 to increase the torque, and drive the loading reel 11, and then pass the steel wire rope, pass the hanger fixed pulley block 15, drive the winch drum 14, speed up and reduce the torque through the speed-down box 12, and drive the hydraulic winch motor 7. The flow output by the hydraulic winch motor 7 is supplied to the two loading motors through the first branch to realize reverse energy recovery. The high-pressure oil supplied by the first auxiliary pump 1 is mainly used to supplement the discharge volume of the hydraulic winch motor 7, the large-displacement loading motor 8 and the small-displacement loading motor 19 and the first proportional relief valve 6 or the third proportional relief valve 18 of overflow. If the first proportional relief valve 6 is working, the overflow of the first proportional relief valve ₆ is detected by the flow meter F1, thereby adjusting the displacement of the first auxiliary pump 1; if the third proportional relief valve 18 is working, The first auxiliary pump 1 works with a minimum displacement value. The second auxiliary pump 2 supplements the low-pressure oil for the hydraulic winch motor 7, and promotes the reverse operation of the whole system. The displacement of the second auxiliary pump 2 is controlled by the rotational speed sensor 13, thereby controlling the speed of the wire rope. Judging whether the measured value of the _third pressure transmitter P3 produces a pressure pulse, judging the change of the number of layers in the system, and changing the displacement values of the two loading motors according to the optimized displacement values of the two loading motors at the corresponding layer number.

Claims (7)

1. a double motor type energy recovery test stand for hydraulic net-lifting winch, it is specifically designed to hydraulic net-lifting winch and carries out quality inspection and reliability testing, described hydraulic net-lifting winch (16) includes hydraulic winch motor (7), reduction box (10) and niggerhead (14), the pipeline that hydraulic winch motor (7) is connected by reduction box (12) connection winch reel (14), reduction box (12) and niggerhead (14) is provided with speed probe (13)；This double motor type energy recovery test stand for hydraulic net-lifting winch includes the first donkey pump (1), the second donkey pump (2), the first proportional pressure control valve (6), the 3rd proportional pressure control valve (18), the first branch road, the second branch road and the 3rd branch road, after second branch road and the 3rd branch circuit parallel connection, it is connected to the first branch road, second branch road is provided with the first proportional pressure control valve (6), for regulating the pressure of this first branch road；3rd branch road is provided with the 3rd proportional pressure control valve (18)；First donkey pump (1) connects the first branch road, is the first branch road repairing；It is characterized in that described testing stand also includes the second proportional pressure control valve (17), huge discharge loading motor (8), small displacement loading motor (19), the first torquemeter (9), the second torquemeter (20), gearbox (10), loads reel (11) and suspension bracket fixed pulley (15)；Wherein:

Huge discharge loads the oil-out of motor (8) and small displacement loading motor (19) and connects the first branch road respectively, huge discharge is loaded motor (8) and small displacement and loads in the in-line that the oil circuit of motor (19) converges to hydraulic winch motor (7) by this first branch road, according to loading moyor characteristic curve, optimum organization every layer huge discharge loads motor (8) and the displacement value of small displacement loading motor (19), make huge discharge load motor (8) and small displacement loading motor (19) maintains and works between its high efficient area, and meet the system loading requirements of the output of system perseverance moment of torsion and constant speed control；Huge discharge loads motor (8) and connects gearbox (10) by the first torquemeter 9, and small displacement loads motor (19) and connects gearbox (10) by the second torquemeter (20)；Gearbox (10) connects loading reel (11), loads reel (11) by frame fixed pulley group (15) connection winch reel (14)；Second donkey pump (2) connects huge discharge respectively and loads motor (8) and the oil-in of small displacement loading motor (19), loads motor (8) for huge discharge and small displacement loads motor (19) fuel feeding.

2. a kind of double motor type energy recovery test stand for hydraulic net-lifting winch according to claim 1, it is characterized in that the 3rd branch road is provided with the 3rd proportional pressure control valve (18), in reverse rope closing operating mode, with the first proportional pressure control valve (6) with the use of.

3. a kind of double motor type energy recovery test stand for hydraulic net-lifting winch according to claim 1, it is characterized in that the second branch road is additionally provided with effusion meter (F1), this effusion meter (F1) is used for measuring the spillway discharge of the first proportional pressure control valve (6), and its measured value is for the displacement control of the first donkey pump (1).

4. a kind of double motor type energy recovery test stand for hydraulic net-lifting winch according to claim 1, it is characterized in that the first of three electro-hydraulic reversing valves (5) connects huge discharge and loads motor (8) and the oil-in of small displacement loading motor (19), second mouthful connects the second donkey pump (2), 3rd mouthful connects hydraulic winch motor (7), and the 4th mouthful connects the second overflow valve (17)；When forward batches, three electro-hydraulic reversing valves (5) are in right position, second donkey pump (2) adds to huge discharge through three electro-hydraulic reversing valves (5) and reaches (8) load horse and small displacement loads motor (19) low pressure oil supply, and hydraulic winch motor 7 output flow is through three electro-hydraulic reversing valves (5), the second overflow valve (17) oil sump tank simultaneously；When reverse rope closing, three electro-hydraulic reversing valves (5) are in left position, second donkey pump (2) is through three electro-hydraulic reversing valves (5) to hydraulic winch motor (7) low pressure oil supply, and huge discharge adds and reaches (8) load horse and small displacement loads flow that motor (19) exports through three electro-hydraulic reversing valves (5), the second overflow valve (17) oil sump tank simultaneously.

5. a kind of double motor type energy recovery test stand for hydraulic net-lifting winch according to claim 1, it is characterised in that be connected to the first pressure transmitter (P on the first branch road₁), the first pressure transmitter (P₁) for measuring the pressure of the first branch road.

6. a kind of double motor type energy recovery test stand for hydraulic net-lifting winch according to claim 1, it is characterised in that the exit of hydraulic winch motor (7) is provided with the second pressure transmitter (P₂), when forward batches, the second pressure transmitter (P₂) it is used for measuring the outlet pressure of hydraulic winch motor (7)；When reverse rope closing, it is used for measuring the outlet pressure of the second donkey pump (2), i.e. the inlet pressure of hydraulic winch motor (7).

7. a kind of double motor type energy recovery test stand for hydraulic net-lifting winch according to claim 1, it is characterised in that the outlet pressure place of the second donkey pump (2) is provided with the 3rd pressure transmitter (P₃), when forward batches, the 3rd pressure transmitter (P₃) it is used for measuring the outlet pressure of the second donkey pump (2), namely two load the inlet pressure of motor；When reverse rope closing, for measuring the outlet pressure of two loading motors, it is judged that the 3rd pressure transmitter (P₃) measured value whether produce pressure pulse, it determines the situation of change of the system number of plies, thus changing the displacement value of two loading motors.