CN215719879U - Shield tunneling machine propelling hydraulic system for tunneling synchronous assembly - Google Patents
Shield tunneling machine propelling hydraulic system for tunneling synchronous assembly Download PDFInfo
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- CN215719879U CN215719879U CN202120807716.8U CN202120807716U CN215719879U CN 215719879 U CN215719879 U CN 215719879U CN 202120807716 U CN202120807716 U CN 202120807716U CN 215719879 U CN215719879 U CN 215719879U
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Abstract
The utility model discloses a shield machine propulsion hydraulic system for tunneling synchronous assembly, which comprises a hydraulic integrated valve group, a propulsion pump source and an assembly pump source; under the oil cylinder assembly mode, two assembly pump sources are respectively connected with a first assembly mode oil supply port and a second assembly mode oil supply port to supply oil to the hydraulic integrated valve group; and under the propulsion mode, the propulsion pump source is connected with the propulsion mode oil supply port to supply oil to the hydraulic integrated valve group. The utility model relates to a shield tunneling machine propelling hydraulic system for tunneling synchronous assembly, which solves the problem that the shield tunneling machine propelling hydraulic system in the prior art cannot meet the requirement of tunneling synchronous assembly.
Description
Technical Field
The utility model relates to a shield machine propulsion hydraulic system for tunneling synchronous assembly.
Background
The shield machine is a high-tech tunnel construction device integrating multiple modern technologies such as machinery, electricity, hydraulic pressure, sensing and the like, and is widely applied to underground engineering construction of subways, towns, railways, highways, water conservancy, mines and the like.
The shield machine propulsion hydraulic system has two main functions, one is responsible for propulsion and the other is auxiliary segment assembly. The two functions of propulsion and auxiliary duct piece assembling of a traditional shield machine propulsion hydraulic system cannot work simultaneously, assembling must be stopped during propulsion, propulsion must be stopped during assembling, the shield machine cannot realize continuous tunneling, and tunnel construction efficiency is limited.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a shield machine propelling hydraulic system for tunneling synchronous assembly, and aims to solve the problems through the system.
In order to achieve the aim, the technical scheme of the utility model is to design a shield machine propulsion hydraulic system for tunneling synchronous assembly, which comprises a hydraulic integrated valve bank, a propulsion pump source and an assembly pump source; the hydraulic integrated valve group is externally connected with a shield tunneling machine propelling oil cylinder, and the shield tunneling machine propelling oil cylinder comprises an oil cylinder rodless cavity and an oil cylinder rod cavity; the hydraulic integrated valve group comprises an oil inlet joint, a middle joint and a tail joint; the middle connection is provided with a plurality of middle connections, and the middle connections and the oil inlet connections are spliced in series in any sequence; two tail links are connected with two middle links positioned at the outermost side respectively;
a propulsion mode oil supply port, a first assembly mode oil supply port and a second assembly mode oil supply port are formed outside the oil inlet connector; an oil inlet connection hydraulic element is arranged in the oil inlet connection, and comprises a normally open electromagnetic two-way ball valve, a first normally closed electromagnetic two-way ball valve, a manual ball valve, a first proportional pressure reducing valve and a first one-way valve;
an oil cylinder rodless cavity oil inlet and oil outlet and an oil cylinder rod cavity oil inlet and oil outlet are formed outside the middle connector, and the oil cylinder rodless cavity oil inlet and oil outlet and the oil cylinder rod cavity oil inlet and oil outlet are respectively connected with an oil cylinder rodless cavity and an oil cylinder rod cavity; the middle connection hydraulic component comprises a pilot electromagnetic ball valve, a two-way cartridge valve with a seal, a first two-way cartridge valve, a second two-way cartridge valve, a pilot electromagnetic ball valve, a normally closed electromagnetic ball valve, a second proportional pressure reducing valve, a second one-way valve, a third two-way cartridge valve, a fourth two-way cartridge valve and a pilot electromagnetic directional valve;
the two tail couplings are respectively provided with a first valve group oil return port and a second valve group oil return port;
oil paths are arranged in the oil inlet joint, the middle joint and the tail joint; the oil circuit is used for communicating the oil inlet joint hydraulic element, the intermediate joint hydraulic element, the first valve group oil return opening and the second valve group oil return opening;
the propulsion pump source comprises a propulsion pump set, a propulsion pump set pressure regulating valve group, a propulsion proportion pressure limiting and flow display valve group and a filter group; the two groups of the propulsion pump set and the propulsion pump set pressure regulating valve set are connected in parallel to a propulsion proportion pressure limiting and flow display valve set which is connected with a filter set;
the propulsion pump set is a propulsion proportional valve; the pressure regulating valve group of the propulsion pump group comprises a pilot operated overflow valve, an electromagnetic directional valve, an overflow valve, a sequence valve, a manual ball valve, a one-way valve and a bypass speed regulating valve; the pilot-operated overflow valve, the electromagnetic directional valve and the overflow valve are connected in series to form a pressure selection valve; the sequence valve, the manual ball valve and the one-way valve are connected in series, and the bypass speed regulating valve and the pressure selection valve are connected in parallel on a pipeline at the front end of the sequence valve;
the propulsion proportional pressure limiting and flow display valve group consists of a pilot operated overflow valve, an electromagnetic directional valve, a proportional overflow valve, a gear type flowmeter, a one-way valve and a pressure sensor; the pilot-operated overflow valve, the electromagnetic directional valve and the proportional overflow valve are connected in series to form a pilot-operated proportional overflow valve; the pilot overflow valve, the gear type flowmeter and the one-way valve are connected in series and are connected with a group of propulsion pump sets; the front end oil circuit of the pilot overflow valve is connected with the other group of propulsion pumps;
the filter group is formed by connecting a manual ball valve, a high-pressure filter and a one-way valve in series;
the assembled pump source comprises an assembled pump set, an assembled pump set pressure regulating valve group and a filter group; the assembled pump set, the assembled pump set pressure regulating valve group and the filter group are connected through pipelines; two groups of assembled pump sources are provided;
the assembly pump source is an assembly proportional pump; the assembled pump set pressure regulating valve group consists of a direct-acting overflow valve, a pilot electromagnetic overflow valve, a bypass speed regulating valve, a sequence valve, a manual ball valve and a one-way valve; the sequence valve, the manual ball valve and the one-way valve are connected in series; the direct-acting overflow valve, the pilot electromagnetic overflow valve and the bypass speed regulating valve are connected in series on a pipeline at the front end of the sequence valve;
the filter group is formed by connecting a manual ball valve, a high-pressure filter and a one-way valve in series;
under the oil cylinder assembly mode, two assembly pump sources are respectively connected with a first assembly mode oil supply port and a second assembly mode oil supply port to supply oil to the hydraulic integrated valve group;
and under the propulsion mode, the propulsion pump source is connected with the propulsion mode oil supply port to supply oil to the hydraulic integrated valve group.
Further, under the assembly mode that the oil cylinder extends out, the first assembly mode oil supply port and the second assembly mode oil supply port are respectively and sequentially connected with a second two-way cartridge valve, a first two-way cartridge valve, an oil cylinder rodless cavity oil inlet and return port, a shield tunneling machine propulsion oil cylinder, an oil cylinder rod cavity oil inlet and return port, a third two-way cartridge valve, a first valve group oil return port and a second valve group oil return port through oil paths; the pilot electromagnetic ball valve is connected with the second two-way cartridge valve;
in the assembly mode of retracting the oil cylinder, the first assembly mode oil supply port and the second assembly mode oil supply port are respectively and sequentially connected with a fourth two-way cartridge valve, an oil cylinder rod cavity oil inlet and return port, a shield tunneling machine propulsion oil cylinder, a cylinder rodless cavity oil inlet and return port, a two-way cartridge valve with a seal, a first valve group oil return port and a second valve group oil return port through oil paths; the pilot electromagnetic directional valve is connected with the fourth two-way cartridge valve.
Further, in a propulsion mode, the propulsion mode oil supply port is sequentially connected with a normally open electromagnetic two-way ball valve, a manual ball valve, a normally closed electromagnetic ball valve, a second proportional pressure reducing valve, a second one-way valve, an oil cylinder rodless cavity oil inlet and oil return port, a shield tunneling machine propulsion oil cylinder, an oil cylinder rod cavity oil inlet and oil return port, a third two-way cartridge valve, a first valve group oil return port and a second valve group oil return port through oil paths.
Further, in a propulsion mode two, the propulsion mode oil supply port is sequentially connected with a first normally closed electromagnetic two-way ball valve, a first proportional pressure reducing valve, a first one-way valve, a normally closed electromagnetic ball valve, a second proportional pressure reducing valve, a second one-way valve, an oil cylinder rodless cavity oil inlet and return port, a shield tunneling machine propulsion oil cylinder, an oil cylinder rod cavity oil inlet and return port, a third two-way cartridge valve, a first valve group oil return port and a second valve group oil return port through an oil way.
Furthermore, the oil inlet joint is also provided with an oil leakage port, a third check valve and a first standby port.
Furthermore, the middle link is also provided with an oil cylinder rodless cavity pressure sensor interface, an oil cylinder rodless cavity pressure measuring point-middle link, an oil cylinder rod cavity pressure measuring point, a second standby port, a damping hole, a second normally closed electromagnetic two-way ball valve, a fourth one-way valve, an overflow valve and a pressure sensor.
Furthermore, the tail coupling is also provided with a pilot oil pressure measuring port, a propulsion mode oil supply pressure measuring port, a first assembly mode oil supply pressure measuring port, a second assembly mode oil supply pressure measuring port and a leakage oil pressure measuring port.
The utility model has the advantages and beneficial effects that: the utility model relates to a shield tunneling machine propelling hydraulic system for tunneling synchronous assembly, which solves the problem that the shield tunneling machine propelling hydraulic system in the prior art cannot meet the requirement of tunneling synchronous assembly. The system is provided with an independent assembling pump source and a propelling pump source, oil ways of a propelling mode and an assembling mode in the tunneling synchronous assembling valve group are also separated, and each oil cylinder is provided with an independent proportional pressure reducing valve for pressure control, so that the system can be used for tunneling synchronous assembling control of the shield tunneling machine.
Drawings
Fig. 1 is a schematic view of the exterior of the present invention in six dimensions.
Fig. 2 is a perspective view of the present invention.
Fig. 3 is a hydraulic oil path diagram when the oil cylinder extends out in the assembly mode.
Fig. 4 is a hydraulic oil path diagram when the oil cylinder retracts in the assembly mode.
FIG. 5 is a hydraulic fluid path diagram for the propel mode.
FIG. 6 is a hydraulic oil path diagram in the propulsion mode two.
FIG. 7 is a schematic view of a propeller pump source.
FIG. 8 is a schematic view of a modular pump source.
Fig. 9 is a schematic diagram of a first propulsion mode (tunneling synchronous splicing propulsion mode) and a second propulsion mode (micro-speed propulsion mode).
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example (b):
a shield machine propulsion hydraulic system for tunneling synchronous assembly comprises a hydraulic integrated valve group, a propulsion pump source and an assembly pump source; the hydraulic integrated valve group is externally connected with a shield tunneling machine propulsion oil cylinder, and an oil cylinder rodless cavity and an oil cylinder rod cavity are arranged in the shield tunneling machine propulsion oil cylinder C; the hydraulic integrated valve group comprises an oil inlet connector D, a middle connector E and a tail connector F; the middle connection E is provided with a plurality of middle connections, and the middle connections E and the oil inlet connection D are spliced in series in any sequence; two tail links F are arranged and are respectively connected with two middle links E positioned at the outermost side;
a propulsion mode oil supply port P1, a first assembly mode oil supply port P2 and a second assembly mode oil supply port P3 are arranged outside the oil inlet connector D; an oil inlet connection hydraulic element is arranged in the oil inlet connection D and comprises a normally open electromagnetic two-way ball valve 1, a first normally closed electromagnetic two-way ball valve 2, a manual ball valve 3, a first proportional pressure reducing valve 4 and a first one-way valve 5;
an oil cylinder rodless cavity oil inlet and return port A and an oil cylinder rod cavity oil inlet and return port B are arranged outside the middle link E, and the oil cylinder rodless cavity oil inlet and return port A and the oil cylinder rod cavity oil inlet and return port B are respectively connected with an oil cylinder rodless cavity and an oil cylinder rod cavity; an intermediate hydraulic component is arranged in the intermediate link E and comprises a pilot electromagnetic ball valve 14, a two-way cartridge valve 15 with a seal, a first two-way cartridge valve 16, a second two-way cartridge valve 17, a pilot electromagnetic ball valve 18, a normally closed electromagnetic ball valve 21, a second proportional pressure reducing valve 22, a second one-way valve 23, a third two-way cartridge valve 32, a fourth two-way cartridge valve 33 and a pilot electromagnetic directional valve 34;
a first valve group oil return port T1 and a second valve group oil return port T2 are respectively arranged on the two tail couplers F;
oil paths are arranged in the oil inlet joint D, the middle joint E and the tail joint F; the oil circuit is used for communicating the oil inlet joint hydraulic element, the intermediate joint hydraulic element, the first valve group oil return port T1 and the second valve group oil return port T2;
the propulsion pump source comprises a propulsion pump set, a propulsion pump set pressure regulating valve group, a propulsion proportion pressure limiting and flow display valve group and a filter group; the two groups of the propulsion pump set and the propulsion pump set pressure regulating valve set are connected in parallel to a propulsion proportion pressure limiting and flow display valve set which is connected with a filter set;
the propulsion pump group is a propulsion proportional valve 58; the pressure regulating valve group of the propulsion pump group comprises a pilot-operated overflow valve 42, an electromagnetic reversing valve 43, an overflow valve 44, a sequence valve 45, a manual ball valve 46, a one-way valve 47 and a bypass speed regulating valve 48; the pilot-operated overflow valve 42, the electromagnetic directional valve 43 and the overflow valve 44 are connected in series to form a pressure selection valve; the three-gear pressure selection of unloading, tunneling synchronous assembly pump source pressure (33 MPa pressure) and non-tunneling synchronous assembly pump source pressure (28 MPa pressure) can be realized, the sequence valve 45, the manual ball valve 46 and the one-way valve 47 are connected in series, and the bypass speed regulating valve 48 and the pressure selection valve are connected in parallel on a pipeline at the front end of the sequence valve 45; the bypass speed valve 48 is connected at one end to the VP oil inlet and at one end to the VT oil return. The sequence valve 45, the manual ball valve 46 and the check valve 47 are connected in series and then are respectively connected to the VP oil inlet and the VPA oil outlet.
The propulsion proportional pressure limiting and flow display valve group consists of a pilot-operated overflow valve 49, an electromagnetic reversing valve 53, a proportional overflow valve 54, a gear-type flowmeter 50, a one-way valve 51 and a pressure sensor 52; the pilot-operated overflow valve 49, the electromagnetic directional valve 53 and the proportional overflow valve 54 are connected in series to form a pilot-operated proportional overflow valve; the pilot-operated overflow valve 49, the gear type flowmeter 50 and the one-way valve 51 are connected in series and are connected with a group of propulsion pump units; the front end oil circuit of the pilot overflow valve 49 is connected with the other group of propulsion pumps;
the filter group is formed by connecting a manual ball valve 55, a high-pressure filter 56 and a one-way valve 57 in series;
in fig. 7, NP1, NP2, NP3 are pressure oil ports, NT is an oil return port, NMP1 is a pressure sensor and pressure gauge interface, VP is an oil inlet, VPA is an oil outlet, VT is an oil return port, VMP1 is a pressure gauge interface, VMP2 is a pressure gauge interface, and VL is a leakage oil port; VS is oil suction port, VT1 is oil discharge port, and VA is pressure oil outlet. Three oil ports of the propulsion proportional valve 58 are VS as an oil suction port, VT1 as an oil drainage port and VA as a pressure oil outlet; the propel proportional pump 58 is electrically proportional displacement, pressure cutoff, and constant power regulated.
The assembled pump source comprises an assembled pump set, an assembled pump set pressure regulating valve group and a filter group; the assembled pump set, the assembled pump set pressure regulating valve group and the filter group are connected through pipelines; two groups of assembled pump sources are provided;
the assembly pump source is an assembly proportional pump 61; the assembled pump set pressure regulating valve group consists of a direct-acting overflow valve 62, a pilot electromagnetic overflow valve 63, a bypass speed regulating valve 64, a sequence valve 65, a manual ball valve 66 and a one-way valve 67; the sequence valve 65, the manual ball valve 66 and the check valve 67 are connected in series; the direct-acting overflow valve 62, the pilot electromagnetic overflow valve 63 and the bypass speed regulating valve 64 are connected in parallel on a pipeline at the front end of the sequence valve 65;
the filter group is formed by connecting a manual ball valve 68, a high-pressure filter 69 and a one-way valve 70 in series;
in fig. 8, ES is an oil suction port, ET1 is an oil discharge port, EA is a pressure oil outlet, and the three oil ports are three oil ports of the thrust proportional pump 61. The boost proportioning pump 61 is electrically proportional displacement, pressure cut-off and constant power regulated. EP is an oil inlet, EPA is an oil outlet, ET is an oil return port, EMP1 is a pressure gauge interface, EMP2 is a pressure gauge interface, and EL is an oil leakage port; the direct relief valve 62 is connected at one end to the EP oil inlet and at one end to the ET oil return. The bypass speed valve 64 is connected at one end to the EP oil inlet and at one end to the ET oil return. The sequence valve 65, the manual ball valve 66 and the one-way valve 67 are connected in series and then are respectively connected to the EP oil inlet and the EPA oil outlet.
Under the oil cylinder assembly mode, two assembly pump sources are respectively connected with a first assembly mode oil supply port P2 and a second assembly mode oil supply port P3 to supply oil for a hydraulic integrated valve bank;
and in the propulsion mode, the propulsion pump source is connected with a propulsion mode oil supply port P1 to supply oil for the hydraulic integrated valve bank.
Under the assembly mode that the oil cylinder extends out, the first assembly mode oil supply port P2 and the second assembly mode oil supply port P3 are respectively connected with a second two-way cartridge valve 17, a first two-way cartridge valve 16, an oil cylinder rodless cavity oil inlet and return port A, a shield tunneling machine propulsion oil cylinder C, an oil cylinder rod cavity oil inlet and return port B, a third two-way cartridge valve 32, a first valve group oil return port T1 and a second valve group oil return port T2 in sequence through oil ways; the pilot electromagnetic ball valve 18 is connected with the second two-way cartridge valve 17;
in the oil cylinder retraction assembly mode, the first assembly mode oil supply port P2 and the second assembly mode oil supply port P3 are respectively connected with a fourth two-way cartridge valve 33, an oil cylinder rod cavity oil inlet and return port B, a shield tunneling machine propulsion oil cylinder C, a cylinder rodless cavity oil inlet and return port A, a two-way cartridge valve with seal 15, a first valve group oil return port T1 and a second valve group oil return port T2 in sequence through oil paths; the pilot electromagnetic directional valve 34 is connected to the fourth two-way cartridge valve 33.
In a first propulsion mode (a synchronous tunneling splicing propulsion mode), a propulsion mode oil supply port P1 is sequentially connected with a normally open electromagnetic two-way ball valve 1, a manual ball valve 3, a normally closed electromagnetic ball valve 21, a second proportional pressure reducing valve 22, a second one-way valve 23, an oil cylinder rodless cavity oil inlet and return port A, a shield tunneling machine propulsion oil cylinder C, an oil cylinder rod cavity oil inlet and return port B, a third two-way cartridge valve 32, a first valve group oil return port T1 and a second valve group oil return port T2 through oil paths.
In a propulsion mode II (a micro-speed propulsion mode), a propulsion mode oil supply port P1 is sequentially connected with a first normally closed electromagnetic two-way ball valve 2, a first proportional pressure reducing valve 4, a first one-way valve 5, a normally closed electromagnetic ball valve 21, a second proportional pressure reducing valve 22, a second one-way valve 23, an oil cylinder rodless cavity oil inlet and return port A, a shield tunneling machine propulsion oil cylinder C, an oil cylinder rod cavity oil inlet and return port B, a third two-way cartridge valve 32, a first valve group oil return port T1 and a second valve group oil return port T2 through an oil way.
And an oil leakage port L, a third check valve 6 and a first standby port X are also arranged on the oil inlet connector D.
The middle joint E is also provided with an oil cylinder rodless cavity pressure sensor interface MA1, an oil cylinder rodless cavity pressure measuring point-middle joint MA2, an oil cylinder rod cavity pressure measuring point MB, a second standby port E, a damping hole 11, a second normally closed electromagnetic two-way ball valve 12, a fourth one-way valve 13, an overflow valve 31 and a pressure sensor 41.
The tail coupling F is also provided with a pilot oil pressure measuring port MSt, a propulsion mode oil supply pressure measuring port MP1, a first assembly mode oil supply pressure measuring port MP2, a second assembly mode oil supply pressure measuring port MP3 and a leakage oil pressure measuring port MLND.
The oil path under the splicing mode is that oil supply in the splicing mode enters from a first splicing mode oil supply port P2 and a second splicing mode oil supply port P3, when the oil cylinder extends out, the pilot electromagnetic ball valve 18 is electrified, hydraulic oil passes through the second two-way cartridge valve 17 and the first two-way cartridge valve 16, hydraulic oil in a rod cavity of the oil cylinder enters an oil return port B through the rod cavity of the oil cylinder, and then flows back to the first valve group oil return port T1 and the second valve group oil return port T2 through the third two-way cartridge valve 32, so that the oil tank is returned. When the oil cylinder retracts, the reversing valve of the pilot electromagnetic reversing valve 34 is electrified, hydraulic oil of the first assembly mode oil supply port P2 and the second assembly mode oil supply port P3 reaches an oil inlet and return port B of a rod cavity of the oil cylinder through the fourth two-way cartridge valve 33 and then reaches the rod cavity of the oil cylinder, the pilot electromagnetic ball valve 14 is electrified, hydraulic oil of a rodless cavity of the oil cylinder reaches an oil inlet and return port A of a rodless cavity of the oil cylinder and then reaches a first valve group oil return port T1 and a second valve group oil return port T2 through the sealed two-way cartridge valve 15, and therefore the oil tank returns.
Propulsion mode one oil circuit: the oil supply in the propulsion mode enters from a propulsion mode oil supply port P1, passes through the normally open electromagnetic two-way ball valve 1, the manual ball valve 3, the normally closed electromagnetic ball valve 21, the second proportional pressure reducing valve 22 and the second one-way valve 23, reaches an oil inlet and return port A of a rodless cavity of the oil cylinder of the valve group, then reaches a rodless cavity of the oil cylinder, the propulsion oil cylinder extends out, the oil in the rod cavity of the propulsion oil cylinder returns to an oil inlet and return port B of a rod cavity of the oil cylinder, and then reaches a first valve group oil return port T1 and a second valve group oil return port T2 from the third two-way cartridge valve 32, so that the oil tank returns.
Propulsion mode two oil circuit: the oil supply in the propulsion mode enters from a propulsion mode oil supply port P1, passes through a first normally closed electromagnetic two-way ball valve 2, a first proportional pressure reducing valve 4, a first one-way valve 5, a normally closed electromagnetic ball valve 21, a second proportional pressure reducing valve 22 and a second one-way valve 23, reaches an oil cylinder rodless cavity oil inlet and return port A of a valve group, then reaches a rodless cavity of an oil cylinder, the propulsion oil cylinder extends out, a rod cavity of the propulsion oil cylinder returns oil to an oil cylinder rod cavity oil inlet and return port B, and then reaches a first valve group oil return port T1 and a second valve group oil return port T2 from a third two-way cartridge valve 32, so that the oil tank returns.
Fig. 9 is a schematic diagram of a first propulsion mode (a tunneling synchronous splicing propulsion mode) and a second propulsion mode (a micro-speed propulsion mode).
When the tunneling synchronous assembly is carried out, some propulsion oil cylinders participate in propulsion, some propulsion oil cylinders do not participate in propulsion, and the propulsion oil cylinders which do not participate in propulsion can not be realized by electrifying the electromagnetic two-way ball valve 21 on the tunneling synchronous assembly integrated valve group. The propulsion oil cylinder which does not participate in propulsion can realize the assembly of the auxiliary duct pieces through telescopic action under the oil supply of the assembly pump source. And (3) a propelling mode during tunneling synchronous assembly: the booster pump source part provides stable and adjustable pump source pressure and sufficient flow, wherein the stable and adjustable pump source pressure is provided by a pilot type proportional relief valve formed by a pilot type relief valve 49, a solenoid directional valve 53 and a proportional relief valve 54, and the sufficient flow is realized by matching a booster proportional pump 58 and a gear flow meter 50. The oil supply in the propulsion mode is carried out from the electromagnetic two-way ball valve 1 and the manual ball valve 3 in the tunneling synchronous assembling integrated valve group and directly reaches the oil path of the electromagnetic two-way ball valve 21, the second proportional pressure reducing valve 22 and the one-way valve 23 in the middle connection of the valve group. The oil path of the propulsion mode bypasses the oil path of the electromagnetic two-way ball valve 2, the first proportional pressure reducing valve 4 and the check valve 5. In the mode, the pump source pressure is stable, the flow is sufficient, the proportional pressure reducing valves of all the thrust cylinders can freely set the pressure, and the thrust pressure of each cylinder is set by an algorithm, so that the balance of the thrust and the moment of the shield tunneling machine under the condition that a plurality of thrust cylinders in the assembly mode do not participate in the thrust can be realized.
When the tunneling synchronous assembly is carried out, each propulsion oil cylinder participating in propulsion is controlled by a single proportional pressure reducing valve, the flow through the proportional pressure reducing valves is small, when the propulsion speed is low, the flow through the proportional pressure reducing valves is smaller, and the propulsion pressure is possibly unstable. A micro-speed propulsion mode: the booster pump source provides stable flow and is provided by a booster proportional pump 58, and the booster pump source provides pressure limiting pressure and is provided by a pilot proportional relief valve formed by a pilot overflow valve 49, an electromagnetic directional valve 53 and a proportional relief valve 54. The oil supply in the propulsion mode is from the electromagnetic two-way ball valve 2, the first proportional pressure reducing valve 4 and the one-way valve 5 in the tunneling synchronous assembling integrated valve bank to directly reach the oil passages of the electromagnetic two-way ball valve 21, the second proportional pressure reducing valve 22 and the one-way valve 23 in the middle connection of the valve bank. The pushing mode bypasses the oil path of the electromagnetic two-way ball valve 1 and the manual ball valve 3. In this mode, the pressure value of the second proportional pressure reducing valve 22 is set to be the maximum, which corresponds to normal open. The propulsion control returns to the traditional grouping control again, and the pressure of the propulsion oil cylinders of each group is centrally controlled by the proportional pressure reducing valve. Because the first proportional pressure reducing valve 4 controls a plurality of oil cylinders, the flow passing through the oil cylinders is large, and the problem of unstable pressure cannot occur.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides a shield constructs quick-witted propulsion hydraulic system for tunneling is assembled in step which characterized in that: the hydraulic integrated valve group comprises a hydraulic integrated valve group, a propulsion pump source and an assembled pump source; the hydraulic integrated valve group is externally connected with a shield tunneling machine propelling oil cylinder, and the shield tunneling machine propelling oil cylinder comprises an oil cylinder rodless cavity and an oil cylinder rod cavity; the hydraulic integrated valve group comprises an oil inlet joint, a middle joint and a tail joint; the middle connection is provided with a plurality of middle connections, and the middle connections and the oil inlet connections are spliced in series in any sequence; two tail links are connected with two middle links positioned at the outermost side respectively;
a propulsion mode oil supply port, a first assembly mode oil supply port and a second assembly mode oil supply port are formed outside the oil inlet connector; an oil inlet connection hydraulic element is arranged in the oil inlet connection, and comprises a normally open electromagnetic two-way ball valve, a first normally closed electromagnetic two-way ball valve, a manual ball valve, a first proportional pressure reducing valve and a first one-way valve;
an oil cylinder rodless cavity oil inlet and oil outlet and an oil cylinder rod cavity oil inlet and oil outlet are formed outside the middle connector, and the oil cylinder rodless cavity oil inlet and oil outlet and the oil cylinder rod cavity oil inlet and oil outlet are respectively connected with an oil cylinder rodless cavity and an oil cylinder rod cavity; the middle connection hydraulic component comprises a pilot electromagnetic ball valve, a two-way cartridge valve with a seal, a first two-way cartridge valve, a second two-way cartridge valve, a pilot electromagnetic ball valve, a normally closed electromagnetic ball valve, a second proportional pressure reducing valve, a second one-way valve, a third two-way cartridge valve, a fourth two-way cartridge valve and a pilot electromagnetic directional valve;
the two tail couplings are respectively provided with a first valve group oil return port and a second valve group oil return port;
oil paths are arranged in the oil inlet joint, the middle joint and the tail joint; the oil circuit is used for communicating the oil inlet joint hydraulic element, the intermediate joint hydraulic element, the first valve group oil return opening and the second valve group oil return opening;
the propulsion pump source comprises a propulsion pump set, a propulsion pump set pressure regulating valve group, a propulsion proportion pressure limiting and flow display valve group and a filter group; the two groups of the propulsion pump set and the propulsion pump set pressure regulating valve set are connected in parallel to a propulsion proportion pressure limiting and flow display valve set which is connected with a filter set;
the propulsion pump set is a propulsion proportional valve; the pressure regulating valve group of the propulsion pump group comprises a pilot operated overflow valve, an electromagnetic directional valve, an overflow valve, a sequence valve, a manual ball valve, a one-way valve and a bypass speed regulating valve; the pilot-operated overflow valve, the electromagnetic directional valve and the overflow valve are connected in series to form a pressure selection valve; the sequence valve, the manual ball valve and the one-way valve are connected in series, and the bypass speed regulating valve and the pressure selection valve are connected in parallel on a pipeline at the front end of the sequence valve;
the propulsion proportional pressure limiting and flow display valve group consists of a pilot operated overflow valve, an electromagnetic directional valve, a proportional overflow valve, a gear type flowmeter, a one-way valve and a pressure sensor; the pilot-operated overflow valve, the electromagnetic directional valve and the proportional overflow valve are connected in series to form a pilot-operated proportional overflow valve; the pilot overflow valve, the gear type flowmeter and the one-way valve are connected in series and are connected with a group of propulsion pump sets; the front end oil circuit of the pilot overflow valve is connected with the other group of propulsion pumps;
the filter group is formed by connecting a manual ball valve, a high-pressure filter and a one-way valve in series;
the assembled pump source comprises an assembled pump set, an assembled pump set pressure regulating valve group and a filter group; the assembled pump set, the assembled pump set pressure regulating valve group and the filter group are connected through pipelines; two groups of assembled pump sources are provided;
the assembly pump source is an assembly proportional pump; the assembled pump set pressure regulating valve group consists of a direct-acting overflow valve, a pilot electromagnetic overflow valve, a bypass speed regulating valve, a sequence valve, a manual ball valve and a one-way valve; the sequence valve, the manual ball valve and the one-way valve are connected in series; the direct-acting overflow valve, the pilot electromagnetic overflow valve and the bypass speed regulating valve are connected in parallel on a pipeline at the front end of the sequence valve;
the filter group is formed by connecting a manual ball valve, a high-pressure filter and a one-way valve in series;
under the oil cylinder assembly mode, two assembly pump sources are respectively connected with a first assembly mode oil supply port and a second assembly mode oil supply port to supply oil to the hydraulic integrated valve group;
and under the propulsion mode, the propulsion pump source is connected with the propulsion mode oil supply port to supply oil to the hydraulic integrated valve group.
2. The shield tunneling machine propelling hydraulic system for tunneling synchronous assembly according to claim 1, characterized in that: in the assembly mode that the oil cylinder extends out, the first assembly mode oil supply port and the second assembly mode oil supply port are respectively connected with a second two-way cartridge valve, a first two-way cartridge valve, an oil cylinder rodless cavity oil inlet and return port, a shield tunneling machine propulsion oil cylinder, an oil cylinder rod cavity oil inlet and return port, a third two-way cartridge valve, a first valve group oil return port and a second valve group oil return port in sequence through oil paths; the pilot electromagnetic ball valve is connected with the second two-way cartridge valve;
in the assembly mode of retracting the oil cylinder, the first assembly mode oil supply port and the second assembly mode oil supply port are respectively and sequentially connected with a fourth two-way cartridge valve, an oil cylinder rod cavity oil inlet and return port, a shield tunneling machine propulsion oil cylinder, a cylinder rodless cavity oil inlet and return port, a two-way cartridge valve with a seal, a first valve group oil return port and a second valve group oil return port through oil paths; the pilot electromagnetic directional valve is connected with the fourth two-way cartridge valve.
3. The shield tunneling machine propelling hydraulic system for tunneling synchronous assembly according to claim 1, characterized in that: in the first propulsion mode, the propulsion mode oil supply port is sequentially connected with a normally open electromagnetic two-way ball valve, a manual ball valve, a normally closed electromagnetic ball valve, a second proportional pressure reducing valve, a second one-way valve, an oil cylinder rodless cavity oil inlet and return port, a shield tunneling machine propulsion oil cylinder, an oil cylinder rod cavity oil inlet and return port, a third two-way cartridge valve, a first valve group oil return port and a second valve group oil return port through oil paths.
4. The shield tunneling machine propelling hydraulic system for tunneling synchronous assembly according to claim 1, characterized in that: in the second propulsion mode, the propulsion mode oil supply port is sequentially connected with a first normally closed electromagnetic two-way ball valve, a first proportional pressure reducing valve, a first one-way valve, a normally closed electromagnetic ball valve, a second proportional pressure reducing valve, a second one-way valve, an oil cylinder rodless cavity oil inlet and oil return port, a shield tunneling machine propulsion oil cylinder, an oil cylinder rod cavity oil inlet and oil return port, a third two-way cartridge valve, a first valve group oil return port and a second valve group oil return port through an oil way.
5. The shield tunneling machine propelling hydraulic system for tunneling synchronous assembly according to claim 1, characterized in that: and the oil inlet joint is also provided with an oil leakage port, a third one-way valve and a first standby port.
6. The shield tunneling machine propelling hydraulic system for tunneling synchronous assembly according to claim 1, characterized in that: the middle connector is also provided with an oil cylinder rodless cavity pressure sensor interface, an oil cylinder rodless cavity pressure measuring point-middle connector, an oil cylinder rod cavity pressure measuring point, a second standby port, a damping hole, a second normally closed electromagnetic two-way ball valve, a fourth one-way valve, an overflow valve and a pressure sensor.
7. The shield tunneling machine propelling hydraulic system for tunneling synchronous assembly according to claim 1, characterized in that: the tail coupling is also provided with a pilot oil pressure measuring port, a propulsion mode oil supply pressure measuring port, a first assembly mode oil supply pressure measuring port, a second assembly mode oil supply pressure measuring port and a leakage oil pressure measuring port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120807716.8U CN215719879U (en) | 2021-04-20 | 2021-04-20 | Shield tunneling machine propelling hydraulic system for tunneling synchronous assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120807716.8U CN215719879U (en) | 2021-04-20 | 2021-04-20 | Shield tunneling machine propelling hydraulic system for tunneling synchronous assembly |
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| Publication Number | Publication Date |
|---|---|
| CN215719879U true CN215719879U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120807716.8U Active CN215719879U (en) | 2021-04-20 | 2021-04-20 | Shield tunneling machine propelling hydraulic system for tunneling synchronous assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215719879U (en) |
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2021
- 2021-04-20 CN CN202120807716.8U patent/CN215719879U/en active Active
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