CN201460907U

CN201460907U - An energy recovery device in a shield segment assembly driving system

Info

Publication number: CN201460907U
Application number: CN200920121237XU
Authority: CN
Inventors: 龚国芳; 施虎; 杨华勇; 朱北斗
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2009-06-01
Filing date: 2009-06-01
Publication date: 2010-05-12
Anticipated expiration: 2019-06-01

Abstract

The utility model discloses an energy recovery device in a shield segment assembling drive system. Includes electric motors, pumps, check valves, hydraulic motors/pumps, relief valves, accumulators, 4/3 directional valves, hydraulic transformers and hydraulic cylinders. The system uses motors/pumps, accumulators, and hydraulic transformers as energy conversion and recovery components, and converts part of the mechanical energy in the circumferential rotation and vertical lifting motion of the shield segment assembly machine into hydraulic energy storage for use in assembly operations. The actuator motor/pump of the hydraulic system drives the assembly machine to rotate when it works in the motor state, and feeds the load energy back to the accumulator when it works in the pump state. The lifting action of the lifting hydraulic cylinder and the energy recovery of the gravity load are realized by switching the working state of the hydraulic transformer. Since there is no throttling element in the system, the energy transfer efficiency is high, which avoids the energy loss in the throttling speed regulation system, and has obvious energy-saving effect.

Description

Energy recycle device in a kind of shield duct piece assembling driving system

Technical field

The utility model relates to fluid pressure actuator, relates in particular to the energy recycle device in a kind of shield duct piece assembling driving system.

Background technology

Pipe sheet assembling is the committed step that tunnel piercing is shaped.The pipe sheet assembling system is bearing the task that prefabricated pipe section is shaped along the assembly unit of shield tunneling tunnel as a big ingredient of shield excavation machine.In the pipe sheet assembling process, assembling machine need have the degree of freedom of sufficient amount usually and implement consolidation service to arrive annular tunnel optional position.Position and attitude freedom realize by means of the action that assembly unit drives each executive component in the hydraulic system.In the many actions of pipe sheet assembling, circumferentially revolution is finished in perpendicular with these two actions of vertical lift, so typical gravity load bears in system.Itself often weighs pipe sheet assembling mechanism several tons, even empty machine drops to the bottom, tunnel after the intact every section of jurisdiction of assembly unit, himself gravitional force is also considerable, so it is conducted oneself with dignity and also can be regarded as a kind of gravity load.The control of these two actions all realizes that by means of restricting element under the situation to gravity acting and gravity acting, all there is restriction loss in system, and the gravity load energy is all wasted in the tradition pipe sheet assembling hydraulic system.Therefore, how guaranteeing that the pipe sheet assembling system finishes efficiently correctly that more effectively to utilize the energy of hydraulic system under the situation of assembly unit task be a key issue.

Summary of the invention

Take into account the requirement of energy saving of system in order to overcome the problem that exists in the background technology, the purpose of this utility model is to provide a kind of shield duct piece assembling driving system energy recycle device, callable gravity load energy recovery in revolution and the elevating movement during with the pipe sheet assembling machine operation, adopt hydraulic motor/pump and hydraulic transformer as energy conversion component, to recover energy to be stored in the accumulator and utilize again, thereby reach purpose of energy saving.

The technical scheme that the utility model technical solution problem is adopted is:

Motor of the present utility model and pump are rigidly connected, the inlet port of pump is connected with fuel tank, the oil-out of pump is connected with the overflow valve oil-in with the one way valve oil-in, one way valve oil-out and accumulator oil-in, overflow valve control port, the oil inlet P 1 of first three position four-way directional control valve, first oil inlet P of hydraulic transformer and the second oil-in A, first one way valve and the second one way valve oil-out, executing agency links to each other, the 3rd one way valve, the 4th one way valve oil-in connects fuel tank, first oil-out A1 of first three position four-way directional control valve and hydraulic motor/pump one end hydraulic fluid port, the first one way valve oil-in and the 3rd one way valve oil-out join, second oil-out B1 of first three position four-way directional control valve and hydraulic motor/pump other end hydraulic fluid port, the second one way valve oil-in and the 4th one way valve oil-out join, the oil return inlet T 1 of first three position four-way directional control valve connects oil return line, the output shaft of hydraulic motor/pump drives the duct piece assembling machine rotation, the oil return inlet T of hydraulic transformer connects oil return line, oil-out B connects the oil inlet P 2 of second three position four-way directional control valve, the first oil-out A2 of second three position four-way directional control valve links to each other with the hydraulic cylinder rodless cavity of two parallel connections, the second oil-out B2 of second three position four-way directional control valve links to each other with the hydraulic cylinder rod chamber of two parallel connections, and the oil return inlet T 2 of second three position four-way directional control valve connects oil return line.

The beneficial effect that the utlity model has is:

Actuator element motor/the pump work of hydraulic system drives assembling machine and rotates when the motor state, when being operated in the pump state with load energy feedback in accumulator. realize that by the duty of switching hydraulic transformer the lifting action of lifting hydraulic cylinder and gravity load energy reclaim. owing to do not have restricting element in the system, the energy transfer efficiency height, avoid the energy loss in the throttle grverning system, had remarkable energy saving effect.

Description of drawings

Accompanying drawing is a structural principle schematic diagram of the present utility model.

Among the figure: 1. fuel tank, 2. motor, 3. pump, 4. one way valve, 5. overflow valve, 6. accumulator, 7,11 is three position four-way directional control valve, 8.1,8.2,8.3,8.4 is one way valve, 9. hydraulic motor/pump, 10. hydraulic transformer, 12,13 is hydraulic cylinder.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

As shown in drawings, motor 2 in the utility model is rigidly connected with pump 3, the inlet port of pump 3 is connected with fuel tank 1, the oil-out of pump 3 is connected with overflow valve 5 oil-ins with one way valve 4 oil-ins, one way valve 4 oil-outs and accumulator 6 oil-ins, overflow valve 5 control ports, the P1 mouth of first three position four-way directional control valve 7, the P mouth of hydraulic transformer 10 and A mouth, first one way valve 8.1 and second one way valve, 8.2 oil-outs, executing agency links to each other, the 3rd one way valve 8.3, the 4th one way valve 8.4 oil-ins connect fuel tank 1, the A1 mouth of first three position four-way directional control valve 7 and hydraulic motor/pump 9 one end hydraulic fluid ports, first one way valve, 8.1 oil-ins and the 3rd one way valve 8.3 oil-outs join, the B1 mouth of first three position four-way directional control valve 7 and hydraulic motor/pump 9 other end hydraulic fluid ports, second one way valve, 8.2 oil-ins and the 4th one way valve 8.4 oil-outs join, the T1 mouth of first three position four-way directional control valve 7 connects oil return line, the output shaft of hydraulic motor/pump 9 drives the duct piece assembling machine rotation, the T mouth of hydraulic transformer 10 connects oil return line, the B mouth connects the P2 mouth of second three position four-way directional control valve 11, the A2 mouth of second three position four-way directional control valve 11 and two hydraulic cylinders in parallel 12,13 rodless cavities link to each other, the B2 mouth of second three position four-way directional control valve 11 and two hydraulic cylinders in parallel 12,13 rod chambers link to each other, and the T2 mouth of second three position four-way directional control valve 11 connects oil return line.

Operating principle of the present utility model is as follows:

Motor 2 gets electric startup, driving pump 3 rotates, the oil suction from fuel tank 1 of pump 3 inlet ports, the pressure oil that variable pump 3 is got is delivered to overflow valve 5 and one way valve 4 oil-ins, delivers to the oil-in of accumulator 6, the P1 mouth of first three position four-way directional control valve 7, the P mouth of hydraulic transformer 10 and other executing agency of A mouth and pipe sheet assembling system by one way valve 4.

During segment assembly, at first snatch mechanism in section of jurisdiction is reduced to and waits to piece together the section of jurisdiction stowed location by lifting hydraulic cylinder.

Variable pump/motor displacement in the regulator solution pressure transformer 10 makes the variable pump/motor be in " motor " state, and to oil return line, quantitatively pump/motor is in " pump " state to P mouth pressure oil through the T mouth.When second three position four-way directional control valve, 11 left end electromagnet are switched on, enter the B mouth of hydraulic transformer 10 through the A2 of second three position four-way directional control valve 11 mouth, P2 mouth from the pressure oil of

hydraulic cylinder

12 and 13 rodless cavities, and through quantitative pump/motor to hydraulic transformer A mouth, the gravitional force of decline process is converted into hydraulic pressure can be stored in 6 li of accumulators.The rod chamber of

hydraulic cylinder

12,13 through the B2 of second three position four-way directional control valve 11 mouth, T2 mouth, oil return line from the fuel tank oil suction.

After treating that the section of jurisdiction is fixed on the grasping mechanism, lifting hydraulic cylinder is mentioned pipe sheet assembling mechanism.

Variable pump/motor displacement in the regulator solution pressure transformer 10 makes the variable pump/motor be in " pump " state, through the T mouth by oil return line from the fuel tank oil suction, quantitatively pump/motor is in " motor " state.When the two three position four-way directional control valves, 11 left end electromagnet energising, enter

hydraulic cylinder

12 and 13 rodless cavities from the A mouth of hydraulic transformer 10 and through quantitative pump/motor to the pressure oil of hydraulic transformer B mouth through the P2 of second three position four-way directional control valve 11 mouth, A2 mouth, mechanism rises to certain altitude with assembly unit.Hydraulic oil in

hydraulic cylinder

12,13 rod chambers through the B2 of second three position four-way directional control valve 11 mouth, T2 mouth to oil return line.

After treating that duct piece assembling machine is mentioned the section of jurisdiction, the ad-hoc location that need rotate to an angle and the section of jurisdiction is installed on the circular tunnel to arrive, this moment, the anglec of rotation can only reach a semi-circumference.

First three position four-way directional control valve 7 left side electromagnet get, the hydraulic oil of P1 mouth flows to hydraulic motor/pump 9 one end hydraulic fluid ports through the A1 of first three position four-way directional control valve 7 mouth, and hydraulic motor/pump 9 other end hydraulic fluid port hydraulic oil flow to oil return line through the B1 of first three position four-way directional control valve 7 mouth, T1 mouth.A hydraulic oil part to the first one way valve 8.1 oil-ins of P1 mouth.Because the pressure of one way valve 4 oil-outs is a little more than the pressure of hydraulic oil after the restriction loss of commutation valve port, therefore first one way valve 8.1 is not opened.Hydraulic motor/pump driving section of jurisdiction machine clockwise direction rotated the circumference assigned address was delivered in the section of jurisdiction this moment.Velocity of rotation can be regulated by the discharge capacity of hydraulic motor/pump 9.

Treat duct piece assembling machine with the section of jurisdiction after the assembly unit well of circumference assigned address, need rotate to an angle in the counterclockwise direction drops to initial bit, prepare to grasp next piece section of jurisdiction.

First three position four-way directional control valve 7 all electromagnet outages, because the effect of duct piece assembling machine self gravitation square, hydraulic motor/pump 9 will be operated in the pump operating mode, through the 4th one way valve 8.4 from the fuel tank oil suction, and through first one way valve 8.1 hydraulic oil is filled to accumulator 6, realize that energy reclaims.

When second half circumference work of duct piece assembling machine at the tunnel circular cross section, the ad-hoc location that rotates to an angle and the section of jurisdiction is installed on the circular tunnel to arrive.

First three position four-way directional control valve 7 right electromagnet get, the hydraulic oil of P1 mouth flows to hydraulic motor/pump 9 other end hydraulic fluid ports through the B1 of first three position four-way directional control valve 7 mouth, and hydraulic motor/pump 9 one end hydraulic fluid port hydraulic oil flow to oil return line through the A1 of first three position four-way directional control valve 7 mouth, T1 mouth.A hydraulic oil part to the second one way valve 8.2 oil-ins of P1 mouth.Because the pressure of one way valve 4 oil-outs is a little more than the pressure of hydraulic oil after the restriction loss of commutation valve port, therefore second one way valve 8.2 is not opened.Hydraulic motor/pump driving section of jurisdiction machine counterclockwise rotated the circumference assigned address was delivered in the section of jurisdiction this moment.Velocity of rotation can be regulated by the discharge capacity of hydraulic motor/pump 9.

Treat duct piece assembling machine with the section of jurisdiction after the assembly unit well of circumference assigned address, need be rotated in a clockwise direction certain angle and drop to initial bit, prepare to grasp next piece section of jurisdiction.

First three position four-way directional control valve 7 all electromagnet outages, because the effect of duct piece assembling machine self gravitation square, hydraulic motor/pump 9 will be operated in the pump operating mode, through the 4th one way valve 8.3 from the fuel tank oil suction, and through first one way valve 8.2 hydraulic oil is filled to accumulator 6, realize that energy reclaims.

When lifting

hydraulic cylinder

12,13 was inverted owing to duct piece assembling machine rotation, its lifting action was opposite with said process, and this moment, second three position four-way directional control valve 11 the right electromagnet got electricly, was operated in the right side.

When first three position four-way directional control valve 7 and second three position four-way directional control valve 11 two ends electromagnet all cut off the power supply, valve was operated in meta by state, and revolution and elevating movement stop, and it is static that duct piece assembling machine rests on the ad-hoc location maintenance.

The keying of overflow valve 5 is controlled by pressure oil pressure size in the accumulator 6.When the pressure in the accumulator 6 reached setting value, pump 3 was by overflow valve 5 off-loads.When being not enough to keep executing agency's work required drive after the pressure of accumulator power 6 reduces, overflow valve 5 cuts out, and pump 3 is oil-filled to accumulator.

Claims

1. An energy recovery device in a shield segment assembly drive system, characterized in that: the motor (2) is rigidly connected to the pump (3), the oil suction port of the pump (3) is connected to the fuel tank (1), and the pump (3) ) is connected with the oil inlet of the check valve (4) and the oil inlet of the relief valve (5), and the oil outlet of the check valve (4) is connected with the oil inlet of the accumulator (6) and the relief valve (5) Control oil port, the oil inlet P1 of the first three-position four-way reversing valve (7), the first oil inlet P and the second oil inlet A of the hydraulic transformer (10), the first one-way The valve (8.1) is connected to the oil outlet of the second one-way valve (8.2) and the actuator, the oil inlet of the third one-way valve (8.3) and the fourth one-way valve (8.4) are connected to the oil tank (1), the first The first oil outlet A1 of the three-position four-way reversing valve (7) is connected to the oil port at one end of the hydraulic motor/pump (9), the oil inlet of the first check valve (8.1) and the outlet of the third check valve (8.3). The oil ports are connected, the second oil outlet B1 of the first three-position four-way reversing valve (7) is connected to the oil port at the other end of the hydraulic motor/pump (9), the oil inlet of the second check valve (8.2) and The oil outlets of the fourth one-way valve (8.4) are connected, the oil return port T1 of the first three-position four-way reversing valve (7) is connected to the oil return line, and the output shaft of the hydraulic motor/pump (9) drives the segment The assembly machine rotates, the oil return port T of the hydraulic transformer (10) is connected to the oil return circuit, the oil outlet B is connected to the oil inlet P2 of the second three-position four-way reversing valve (11), and the second three-position four-way The first oil outlet A2 of the reversing valve (11) is connected to the rodless cavity of two parallel hydraulic cylinders (12, 13), and the second oil outlet B2 of the second three-position four-way reversing valve (11) It is connected with two parallel hydraulic cylinders (12, 13) with rod chambers, and the oil return port T2 of the second three-position four-way reversing valve (11) is connected with the oil return circuit.