CN111230837A

CN111230837A - Railway cantilever mounting robot

Info

Publication number: CN111230837A
Application number: CN202010175735.3A
Authority: CN
Inventors: 凌正刚; 肖勇; 肖唐杰; 贺骥; 桂仲成
Original assignee: Beijing Guimu Intelligent Technology Co Ltd
Current assignee: Beijing Guimu Intelligent Technology Co Ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-06-05

Abstract

The invention discloses a railway cantilever mounting robot, which comprises a track traveling crane traveling along a track direction, a generator arranged on the track traveling crane, a lifting arm fixed on the track traveling crane and used for grabbing a cantilever and performing lifting operation, an operating platform fixed on the track traveling crane, a control box arranged on the track traveling crane and electrically connected with the generator, and a hydraulic device arranged on the track traveling crane, electrically controlled by the control box and driving the lifting arm and the operating platform. Through the scheme, the technical blank that special railway cantilever mounting equipment is not available in the prior art is filled, the railway cantilever mounting device has the advantages of simple structure, high efficiency and reliability in hoisting, high mounting efficiency and the like, and has high practical value and popularization value in the technical field of cantilever mounting.

Description

Railway cantilever mounting robot

Technical Field

The invention relates to the technical field of cantilever installation, in particular to a railway cantilever installation robot.

Background

The cantilever is arranged on the support column, is used for supporting the contact suspension and plays a role in transferring load; the wrist can be divided into a horizontal wrist with a pull rod, a flat wrist with an inclined support, an inclined wrist with a pull rod (or a pressing pipe) and the like according to the structure of the wrist; at present, the installation of the wrists in the prior art mainly adopts a manual mode, at least 5-7 workers need to be equipped for installing each group of wrists, and the working efficiency is too low; in addition, the weight of the wrist arm is about 200Kg, so that the lifting is laborious; in addition, the cantilever is installed in a lifting trolley mode, the fixing step before installation is complicated, and rollover accidents are easy to happen if the fixing is unreliable (the periphery of a railway track is provided with more broken stones and the bottom surface is uneven); moreover, the lifting trolley is difficult to advance on the track.

Therefore, a railway cantilever installation robot with a simple structure and high installation efficiency is urgently needed to be provided so as to fill the technical blank that no special railway cantilever installation equipment exists in the prior art.

Disclosure of Invention

Aiming at the problems, the invention aims to provide a railway cantilever mounting robot, and adopts the following technical scheme:

a railway cantilever mounting robot travels along a track direction and hoists a cantilever to a mounting position of a contact net support; the railway cantilever mounting robot comprises a track traveling crane traveling along the track direction, a generator arranged on the track traveling crane, a lifting arm fixed on the track traveling crane and used for grabbing a cantilever and performing lifting operation, an operating platform fixed on the track traveling crane, a control box arranged on the track traveling crane and electrically connected with the generator, and a hydraulic device arranged on the track traveling crane, electrically controlled by the control box and driving the lifting arm and the operating platform.

Further, the lifting arm comprises a lifting arm base fixed on the rail travelling crane, a first arm rod, a second arm rod, a wrist arm grabbing mechanism, a first lifting hydraulic cylinder and a second lifting hydraulic cylinder, wherein the first arm rod is hinged to the top of the lifting arm base at the rear end, the second arm rod is hinged to the front end of the first arm rod at the rear end, the wrist arm grabbing mechanism is hinged to the front end of the second arm rod, the first lifting hydraulic cylinder is connected with the lifting arm base and drives the first arm rod to rotate by taking the hinged position of the first arm rod as a fulcrum, and the second lifting hydraulic cylinder is connected with the first arm rod and the second arm rod in a one-to-one mode and drives the second arm rod to rotate by taking the hinged position of the first arm rod as a fulcrum.

Furthermore, the cantilever grabbing mechanism comprises a grabbing mechanism mounting seat, the top of the grabbing mechanism mounting seat is hinged to the front end of the second arm rod, a horizontal moving sliding rail is fixed to the bottom of the grabbing mechanism mounting seat, and a left grabbing mechanism and a right grabbing mechanism which are arranged at the bottom of the horizontal moving sliding rail and used for grabbing the cantilever.

Furthermore, the left grabbing mechanism and the right grabbing mechanism are identical in structure, the right grabbing mechanism comprises a grabbing buckle mounting seat which is fixed at the bottom of the horizontal moving slide rail and is in a groove shape, an electric cylinder which is fixed in the groove shape of the grabbing buckle mounting seat and is electrically connected with the control box, a cross rod which is connected with the electric cylinder and driven by the electric cylinder to move back and forth, two steel wire ropes, one end of each steel wire rope is connected with two ends of the corresponding cross rod one to one, a reversing wheel which is arranged on the grabbing buckle mounting seat and used for reversing the steel wire ropes, a hoisting plate which is connected with the other end of any steel wire rope, and a self-locking grabbing buckle which is arranged on the lower portion of the hoisting plate and.

Furthermore, the right grabbing mechanism further comprises a limiter which is sleeved on any steel wire rope and is arranged on the upper portion of the hoisting plate.

Furthermore, the operation platform comprises a lifting base fixed at the tail of the rail travelling crane, a rotator fixed on the lifting base and electrically connected with the control box, a lifting base fixed on the rotator, a lifting mechanism arranged on the lifting base and connected with the hydraulic device, and an operation platform arranged at the top of the lifting mechanism.

Furthermore, the hydraulic device comprises an oil tank fixed on the rail travelling crane, a first filter and a second filter which are communicated with the oil tank by adopting pipelines, a duplex pump which is in one-to-one correspondence connection with the first filter and the second filter, a motor which is electrically connected with the control box and is used for driving the duplex pump, a first check valve and a second check valve which are in one-to-one correspondence connection with the duplex pump by adopting pipelines, an operation platform hydraulic driving loop and a first lifting hydraulic cylinder hydraulic driving loop which are both connected with the first check valve, a second lifting hydraulic cylinder hydraulic driving loop which is connected with the second check valve, an air cooler and an oil return filter which are connected with the oil tank at one end respectively after being sequentially connected, and a first electromagnetic overflow valve which is connected between the air cooler and the first check valve, and the second electromagnetic overflow valve is connected between the air cooler and the second one-way valve.

Furthermore, the first hydraulic drive circuit of the lifting hydraulic cylinder and the second hydraulic drive circuit of the lifting hydraulic cylinder have the same structure, and the first hydraulic drive circuit of the lifting hydraulic cylinder comprises a proportional reversing valve and a balance valve which are connected between the first lifting hydraulic cylinder and the first one-way valve by pipelines.

Still further, the operation platform hydraulic drive circuit comprises an electromagnetic valve, a two-way throttle valve and a superposition type hydraulic control one-way valve which are connected between the operation platform and the first one-way valve.

Furthermore, the hydraulic device also comprises an oil drain valve, an air filter, a temperature sensor, a liquid level relay, a liquid level meter, a pressure gauge switch, a pressure gauge and a normally closed valve, wherein the oil drain valve, the air filter, the temperature sensor and the liquid level relay are all connected with the oil tank, the liquid level meter is communicated with the oil tank, the pressure gauge switch and the pressure gauge are communicated with the first one-way valve, and the normally closed valve is bridged between.

Compared with the prior art, the invention has the following beneficial effects:

(1) the rail travelling crane is skillfully arranged to travel along the rail direction, the travelling convenience of the rail travelling crane is higher than that of a lifting trolley or a crane, a hoisting fixed fulcrum is not required to be found (the lifting trolley or the crane needs to fix four supporting points at each cantilever mounting position), the flexibility of the rail travelling crane is stronger, and the mounting and moving efficiency is higher;

(2) the lifting arm is ingeniously arranged on the track travelling crane and is driven by hydraulic pressure, so that the action is reliable, and the hoisting efficiency is obviously improved;

(3) according to the invention, the operation platform is arranged on the rail travelling crane, and an installer can easily install the operation platform after the lifting arm is adopted to lift the cantilever; the number of operators used in the invention can be reduced to 2, one operator is responsible for driving and hydraulic control, the other operator is responsible for buckling the wrist arm on the self-locking grab buckle, and the operation platform is installed when the operator stands; the invention greatly reduces the number of constructors and realizes safe and efficient installation;

(4) the invention is skillfully provided with the horizontal moving slide rail so as to be convenient for fine adjustment in the horizontal direction after the cantilever is hoisted in place; in addition, the invention is also provided with an electric cylinder, and the electric cylinder is used for driving the steel wire rope and driving the self-locking grab fastener to move so as to realize the up-and-down fine adjustment of the cantilever; therefore, the rapid and reliable installation of the wrist arm can be ensured; compared with the traditional lifting trolley or crane, the mounting efficiency is obviously improved;

(5) the operation platform is provided with the rotator, so that the installation angle coverage of operators can be ensured to be wider while a cantilever hoisting space is provided;

(6) the left grabbing mechanism and the right grabbing mechanism are ingeniously arranged, so that the grabbing stress of the cantilever is uniform, and the problems of side slipping, scratching and the like of the cantilever are effectively avoided;

(7) the self-locking buckle is skillfully adopted, the self-locking buckle can be simply buckled in the process of hoisting, and the self-locking buckle can be taken down after being installed; the operation is simple and convenient, and the hoisting and binding time can be saved;

(8) the invention skillfully adopts hydraulic drive, has larger driving force and stable action, and ensures that the cantilever is more reliably hoisted;

(9) the first arm rod, the second arm rod, the left grabbing mechanism and the right grabbing mechanism are skillfully adopted, the swinging amplitude is small, the swinging collision damage of the wrist arm is effectively avoided, and the wrist arm can be quickly hoisted to the installation position;

(10) the control box is adopted to control the electromagnetic valve and the proportional reversing valve to act so as to realize the stable action of the first lifting hydraulic cylinder, the second lifting hydraulic cylinder and the lifting mechanism;

(11) according to the invention, the electromagnetic overflow valve is added in the oil way, so that the overlarge hydraulic pressure is effectively avoided, and the hydraulic control is more reliable;

(12) according to the invention, the air cooler is added in the oil way to cool the return oil, so that the oil return temperature of the oil tank is effectively prevented from being too high to cause oil pump failure; the invention prolongs the service life of the oil pump.

In conclusion, the railway cantilever mounting device fills the technical blank that no special railway cantilever mounting device exists in the prior art, has the advantages of simple structure, high efficiency and reliability in hoisting, high mounting efficiency and the like, and has high practical value and popularization value in the technical field of cantilever mounting.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of protection, and it is obvious for those skilled in the art that other related drawings can be obtained according to these drawings without inventive efforts.

Fig. 1 is a front view of the present invention.

Fig. 2 is a schematic perspective view of the present invention.

Fig. 3 is a schematic structural view of the lifting arm of the present invention.

Fig. 4 is a schematic structural diagram of the operation platform of the present invention.

Fig. 5 is a schematic structural diagram (i) of the cantilever grasping mechanism of the present invention.

Fig. 6 is a schematic structural diagram (one) of the cantilever grasping mechanism of the present invention.

Fig. 7 is a schematic structural diagram of the right gripping mechanism of the present invention.

Fig. 8 is a schematic structural view of the right grasping mechanism of the present invention (unbuttoning mount).

Fig. 9 is a schematic diagram of the hydraulic apparatus of the present invention.

In the drawings, the names of the parts corresponding to the reference numerals are as follows:

1-an oil tank, 2-an oil drain valve, 3-a liquid level meter, 4-a first filter, 5-a second filter, 6-a duplex pump, 7-an air filter, 8-a motor, 9-a first check valve, 10-a second check valve, 11-a temperature sensor, 12-a liquid level relay, 13-a pressure meter switch, 14-a pressure meter, 15-a first electromagnetic overflow valve, 16-a second electromagnetic overflow valve, 17-an electromagnetic valve, 18-a two-way throttle valve, 19-a superposed hydraulic control check valve, 20-a proportional reversing valve, 21-a balance valve, 25-an air cooler, 26-a normally closed valve, 27-an oil return filter, 101-a track traveling crane, 102-a lifting arm, 103-an operation platform, 104-a wrist arm, 111-generator, 112-control box, 121-lifting arm base, 122-first arm rod, 123-second arm rod, 124-wrist arm grabbing mechanism, 125-first lifting hydraulic cylinder, 126-second lifting hydraulic cylinder, 131-lifting base, 132-lifting base table, 133-lifting mechanism, 134-operation table, 135-rotator, 241-grabbing mechanism mounting seat, 242-horizontal moving sliding rail, 243-left grabbing mechanism, 244-right grabbing mechanism, 2441-grabbing buckle mounting seat, 2442-electric cylinder, 2443-reversing wheel, 2444-cross rod, 2445-steel wire rope, 2446-limiter, 2447-hoisting plate and 2448-self-locking grabbing buckle.

Detailed Description

To further clarify the objects, technical solutions and advantages of the present application, the present invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention include, but are not limited to, the following examples. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Examples

As shown in fig. 1 to 9, the present embodiment provides a railroad cantilever mounting robot, which travels in a track direction and hoists a cantilever 104 to a catenary strut mounting position. In the present embodiment, the terms "first", "second", and the like are used only for distinguishing the similar components, and are not to be construed as limiting the scope of protection. In the present embodiment, the terms of orientation such as "bottom", "top", "peripheral edge", "center", and the like are explained based on the drawings. In addition, the track traveling vehicle of the present embodiment is similar to the track detecting vehicle in structure, and the internal structure thereof will not be described herein; moreover, the control box of the present embodiment is obtained by purchasing, and is obtained by wiring the conventional controller and the electrical components, and the control program can be implemented by combining the conventional program segments, which is not described herein again.

In this embodiment, the railroad cantilever-mounted robot includes a track traveling vehicle 101 traveling in a track direction, a generator 111 disposed on the track traveling vehicle 101, a lifting arm 102 fixed to the track traveling vehicle 101 for grasping the cantilever and performing a lifting operation, an operation platform 103 fixed to the track traveling vehicle 101, a control box 112 disposed on the track traveling vehicle 101 and electrically connected to the generator 111, and a hydraulic device disposed on the track traveling vehicle 101, electrically controlled by the control box 112, and driving the lifting arm 102 and the operation platform 103.

The lifting arm 102 includes a lifting arm base 121 fixed to the track traveling crane 101, a first arm 122 whose rear end is hinged to the top of the lifting arm base 121, a second arm 123 whose rear end is hinged to the front end of the first arm 122, a wrist arm grasping mechanism 124 hinged to the front end of the second arm 123, a first lifting hydraulic cylinder 125 whose end is connected to the lifting arm base 121 and the first arm 122 in a one-to-one correspondence manner and which drives the first arm 122 to rotate with the hinge of the lifting arm base 121 as a pivot, and a second lifting hydraulic cylinder 126 whose end is connected to the first arm 122 and the second arm 123 in a one-to-one correspondence manner and which drives the second arm 123 to rotate with the hinge of the first arm 122 as a pivot. The cantilever grasping mechanism 124 includes a grasping mechanism mounting base 241 whose top is hinged to the front end of the second arm 123, a horizontal moving slide rail 242 fixed to the bottom of the grasping mechanism mounting base 241, and a left grasping mechanism 243 and a right grasping mechanism 244 provided at the bottom of the horizontal moving slide rail 242 for grasping the cantilever 104.

In this embodiment, the left grabbing mechanism 243 and the right grabbing mechanism 244 have the same structure, and the right grabbing mechanism 244 includes a grabbing buckle installation base 2441 fixed at the bottom of the horizontal moving slide rail 242 and in a groove shape, an electric cylinder 2442 fixed in the groove shape of the grabbing buckle installation base 2441 and electrically connected to the control box 112, a cross bar 2444 connected to the electric cylinder 2442 and driven by the electric cylinder 2442 to move forward and backward, two steel wire ropes 2445 having one end connected to two ends of the cross bar 2444 in a one-to-one correspondence manner, a reversing wheel 2443 arranged on the grabbing buckle installation base 2441 and used for reversing the steel wire ropes 2445, a hoisting plate 2447 connected to the other end of any steel wire rope 2445, a self-locking grabbing buckle 2448 arranged at the lower part of the hoisting plate 2447 and used for grabbing the cantilever 104, and a stopper 2446 sleeved on any steel wire rope 2445 and arranged at the upper part of the hoisting plate 2447.

When the rail travelling crane 101 is parked and hoisted, the hydraulic device controls the first lifting hydraulic cylinder 125 and the second lifting hydraulic cylinder 126 to be retracted, so that the cantilever grabbing mechanism 124 is close to the bottom surface and is buckled on a pull rod of the cantilever by using the self-locking grabbing buckle 2448, and the left grabbing mechanism 243 and the right grabbing mechanism 244 grab and buckle the cantilever to ensure that the stress of the cantilever is balanced; after the cantilever grabbing mechanism 124 grabs the cantilever, the hydraulic device controls the first lifting hydraulic cylinder 125 and the second lifting hydraulic cylinder 126 to extend so as to hoist the cantilever; after the cantilever is lifted in place, the cantilever can be moved left and right by using the horizontal moving slide rail 242, and the steel wire rope can be driven by using the electric cylinder and the self-locking grab fastener is driven to move, so that the upper and lower fine adjustment of the cantilever is realized.

The operation platform 103 includes a lifting base 131 fixed to the tail of the rail vehicle 101, a rotator 135 fixed to the lifting base 131 and electrically connected to the control box 112, a lifting base 132 fixed to the rotator 135, a lifting mechanism 133 disposed on the lifting base 132 and connected to the hydraulic device, and an operation platform 134 disposed on the top of the lifting mechanism 133. In the present embodiment, the operation table 134 is driven to move up and down by the lifting mechanism 133; and the rotator 135 is adopted in the embodiment to drive the lifting base table 132 to rotate, so as to ensure wider installation angle coverage.

In this embodiment, in order to ensure the operation platform and the lifting arm to lift reliably, a hydraulic device is skillfully arranged, which includes an oil tank 1 fixed on the rail travelling crane 101, a first filter 4 and a second filter 5 communicated with the oil tank 1 by pipelines, a dual pump 6 connected with the first filter 4 and the second filter 5 in a one-to-one correspondence manner, a motor 8 electrically connected with the control box 112 and used for driving the dual pump 6, a first check valve 9 and a second check valve 10 connected with the dual pump 6 in a one-to-one correspondence manner by pipelines, an operation platform hydraulic driving circuit and a first lifting hydraulic cylinder hydraulic driving circuit both connected with the first check valve 9, a second lifting hydraulic cylinder hydraulic driving circuit connected with the second check valve 10, and a hydraulic device connected with the operation platform hydraulic driving circuit, the first lifting hydraulic cylinder hydraulic driving circuit and the second lifting hydraulic cylinder hydraulic driving circuit respectively at one end after being sequentially connected, And the other end connects the air-cooler 25 and the return oil filter 27 of the oil tank 1, connect the first electromagnetic overflow valve 15 between air-cooler 25 and first check valve 9, connect the second electromagnetic overflow valve 16 between air-cooler 25 and second check valve 10, the bleeder valve 2, air cleaner 7, temperature sensor 11 and liquid level relay 12 all connected with oil tank 1, the level gauge 3 communicated with oil tank 1, manometer switch 13 and manometer 14 communicated with first check valve 9, and the normally closed valve 26 of cross-over connection between air-cooler 25. The first hydraulic drive circuit of the lifting hydraulic cylinder and the second hydraulic drive circuit of the lifting hydraulic cylinder have the same structure, and the first hydraulic drive circuit of the lifting hydraulic cylinder comprises a proportional reversing valve 20 and a balance valve 21 which are connected between a first lifting hydraulic cylinder 125 and a first one-way valve 9 by pipelines. In addition, the operation platform hydraulic drive circuit comprises a solenoid valve 17, a two-way throttle valve 18 and a superimposed pilot operated check valve 19 connected between the operation platform and the first check valve 9.

In the embodiment, an operator puts down an instruction, the control box controls the motor to act, and drives the duplex pump 6 to act and pressurize; hydraulic oil with pressure enters the proportional reversing valve 20 from the first one-way valve 9; the column reversing valve 20 moves leftwards (oil enters the upper cavity and oil returns to the lower cavity of the first lifting hydraulic cylinder 125), the first lifting hydraulic cylinder 125 is recovered, the column reversing valve 20 moves rightwards, and the first lifting hydraulic cylinder 125 extends; similarly, the action principles of the hydraulic driving circuit of the second lifting hydraulic cylinder are the same; in this way, hydraulic operation of the lifting arm 102 can be achieved; the operation principle of the hydraulic driving circuit of the operation platform is similar, and will not be described herein. In the present embodiment, when the pressure of the hydraulic oil is excessive, relief is performed by first electromagnetic spill valve 15 and second electromagnetic spill valve 16.

The above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the scope of the present invention, but all the modifications made by the principles of the present invention and the non-inventive efforts based on the above-mentioned embodiments shall fall within the scope of the present invention.

Claims

1. The railway cantilever mounting robot is characterized by comprising a track traveling crane (101) traveling along the track direction, a generator (111) arranged on the track traveling crane (101), a lifting arm (102) fixed on the track traveling crane (101) and used for grabbing a cantilever and performing lifting operation, an operation platform (103) fixed on the track traveling crane (101), a control box (112) arranged on the track traveling crane (101) and electrically connected with the generator (111), and a hydraulic device arranged on the track traveling crane (101), electrically controlled by the control box (112) and driving the lifting arm (102) and the operation platform (103).

2. A railway cantilever-mounted robot according to claim 1, wherein the lifting arm (102) comprises a lifting arm base (121) fixed on the rail vehicle (101), a first arm rod (122) with a rear end hinged with the top of the lifting arm base (121), a second arm rod (123) with a rear end hinged with the front end of the first arm rod (122), a wrist arm grabbing mechanism (124) hinged with the front end of the second arm rod (123), a first lifting hydraulic cylinder (125) the end parts of which are in one-to-one correspondence with the lifting arm base (121) and the first arm rod (122) and drive the first arm rod (122) to rotate by taking the hinged part with the lifting arm base (121) as a fulcrum, and the end parts of the second lifting hydraulic cylinders (126) are connected with the first arm rods (122) and the second arm rods (123) in a one-to-one correspondence manner, and drive the second arm rods (123) to rotate by taking the hinged parts of the second lifting hydraulic cylinders and the first arm rods (122) as pivots.

3. A railroad cantilever-mounting robot as claimed in claim 2, wherein the cantilever grasping mechanism (124) comprises a grasping mechanism mounting base (241) whose top is hinged with the front end of the second arm bar (123), a horizontal moving slide rail (242) fixed at the bottom of the grasping mechanism mounting base (241), and a left grasping mechanism (243) and a right grasping mechanism (244) provided at the bottom of the horizontal moving slide rail (242) for grasping the cantilever (104).

4. The railroad cantilever installation robot of claim 3, wherein the left grabbing mechanism (243) and the right grabbing mechanism (244) are identical in structure, and the right grabbing mechanism (244) comprises a clasp mounting seat (2441) fixed at the bottom of the horizontal moving slide rail (242) and in a groove shape, an electric cylinder (2442) fixed in the groove shape of the clasp mounting seat (2441) and electrically connected with the control box (112), a cross bar (2444) connected with the electric cylinder (2442) and driven by the electric cylinder (2442) to move forward and backward, two steel cables (2445) having one end connected with two ends of the cross bar (2444) in one-to-one correspondence, a reversing wheel (2443) arranged on the clasp mounting seat (2441) and used for reversing the steel cables (2445), a hoisting plate (2447) connected with the other end of any steel cable (2445), and a hoisting plate (2447) arranged at the lower part of the hoisting plate (2447), A self-locking clasp (2448) for grasping the wrist arm (104).

5. The railroad cantilever installation robot of claim 4, wherein the right grabbing mechanism (244) further comprises a stopper (2446) sleeved on any steel wire rope (2445) and placed on the upper part of the hoisting plate (2447).

6. A railroad cantilever-mounted robot as claimed in claim 1, wherein the operation platform (103) comprises a lifting base (131) fixed to the tail of the rail vehicle (101), a rotator (135) fixed to the lifting base (131) and electrically connected to the control box (112), a lifting base (132) fixed to the rotator (135), a lifting mechanism (133) provided on the lifting base (132) and connected to the hydraulic device, and an operation table (134) provided on the top of the lifting mechanism (133).

7. A railway cantilever installation robot according to claim 2, wherein the hydraulic means comprises an oil tank (1) fixed on the railway wagon (101), a first filter (4) and a second filter (5) communicating with the oil tank (1) by using pipelines, a duplex pump (6) correspondingly connected with the first filter (4) and the second filter (5) one by one, a motor (8) electrically connected with the control box (112) and used for driving the duplex pump (6), a first check valve (9) and a second check valve (10) correspondingly connected with the duplex pump (6) by using pipelines, an operation platform hydraulic driving circuit and a first hydraulic lifting cylinder hydraulic driving circuit both connected with the first check valve (9), a second hydraulic cylinder lifting hydraulic driving circuit connected with the second check valve (10), and a hydraulic cylinder lifting hydraulic driving circuit connected with the operation platform hydraulic driving circuit, a hydraulic cylinder lifting hydraulic driving circuit and a hydraulic cylinder lifting hydraulic driving circuit respectively connected with the second check valve (10) in sequence, and one end of which are connected with the operation platform hydraulic driving circuit, a hydraulic cylinder lifting, The air cooler (25) and the oil return filter (27) which are connected with the first lifting hydraulic cylinder hydraulic driving loop and the second lifting hydraulic cylinder hydraulic driving loop and are connected with the oil tank (1) at the other ends, the first electromagnetic overflow valve (15) connected between the air cooler (25) and the first one-way valve (9), and the second electromagnetic overflow valve (16) connected between the air cooler (25) and the second one-way valve (10).

8. A railway cantilever mounted robot according to claim 7, wherein the first and second hydraulic lift cylinder drive circuits are identical in construction and the first hydraulic lift cylinder drive circuit includes a proportional reversing valve (20) and a balancing valve (21) connected in piping between the first lift cylinder (125) and the first check valve (9).

9. A railway cantilever installation robot according to claim 7, wherein the operation platform hydraulic drive circuit comprises a solenoid valve (17), a two-way throttle valve (18) and a superimposed pilot operated check valve (19) connected between the operation platform and the first check valve (9).

10. A railway cantilever mounting robot according to claim 7, wherein the hydraulic device further comprises a fuel drain valve (2), an air filter (7), a temperature sensor (11) and a liquid level relay (12) all connected with the oil tank (1), a liquid level meter (3) communicated with the oil tank (1), a pressure gauge switch (13) and a pressure gauge (14) communicated with the first one-way valve (9), and a normally closed valve (26) bridged between the air coolers (25).