CN116239044A - Bogie lifting hydraulic pressurizing device with tie spring being herringbone spring - Google Patents

Bogie lifting hydraulic pressurizing device with tie spring being herringbone spring Download PDF

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Publication number
CN116239044A
CN116239044A CN202310288552.6A CN202310288552A CN116239044A CN 116239044 A CN116239044 A CN 116239044A CN 202310288552 A CN202310288552 A CN 202310288552A CN 116239044 A CN116239044 A CN 116239044A
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CN
China
Prior art keywords
wall
spring
bogie
lifting
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310288552.6A
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Chinese (zh)
Inventor
蔡文渊
刘伟杰
董积福
李学会
刘文龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Siji Equipment Engineering Co ltd
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Qingdao Siji Equipment Engineering Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Siji Equipment Engineering Co ltd filed Critical Qingdao Siji Equipment Engineering Co ltd
Priority to CN202310288552.6A priority Critical patent/CN116239044A/en
Publication of CN116239044A publication Critical patent/CN116239044A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/02Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
    • B66F7/025Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars screw operated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/28Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T30/00Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

The invention discloses a bogie lifting hydraulic pressurizing device with a tie spring being a herringbone spring, which comprises a top plate, wherein two sliding blocks are connected with the inner wall of a sliding opening formed in the top end of the top plate in a sliding manner, the bottom ends of the sliding blocks are fixedly connected with side plates, one sides of the sliding blocks are respectively provided with a clamping lifting mechanism, the clamping lifting mechanisms are used for fixing and lifting a bogie.

Description

Bogie lifting hydraulic pressurizing device with tie spring being herringbone spring
Technical Field
The invention relates to the technical field of maintenance of railway vehicles, in particular to a bogie lifting hydraulic pressurizing device with a tie spring being a herringbone spring.
Background
The train spring is a herringbone spring bogie which represents a steel spring in a train suspension system and is also a running part of a subway vehicle, and belongs to an important part, wherein the manufacturing, maintenance and overhaul quality of the train spring directly influences the running safety and passenger comfort indexes of the subway.
Aiming at the problem, the Chinese patent number CN209815565U provides a bogie lifting hydraulic pressurizing device with a series of springs being herringbone springs, which can be compatible with the disassembly and assembly operations of bogies in various forms, is designed through, can be compatible with bogies in different structural forms, greatly reduces the civil construction difficulty, is convenient for equipment overhaul and maintenance, improves the equipment overhaul efficiency, and is characterized in that:
(1) In the above patent, after clamping the steering wheels on the bogie by pressing the pressing mould, lifting and overhauling are performed, and a plurality of steering wheels are arranged on the bogie, so that the lifting and overhauling are performed only after the clamping of the plurality of steering wheels is completed by operating a plurality of devices in the above patent, the operating time is long, and the overhauling efficiency is greatly reduced;
(2) In the above patent, when the operation is performed on the bogie with other specifications, the operation and adjustment are required according to the actual size of the bogie, and the device is difficult to operate and inconvenient to adjust due to large volume and heavy weight of the device, so that the practicability of the device is reduced;
(3) When placing the bogie in the device in above-mentioned patent, the bogie is because of being mostly made of metal by oneself, relies on the mode of manpower to align it and places, wastes time and energy, causes the bogie to place the difficulty.
Therefore, we propose a bogie lifting hydraulic pressurizing device with a tie spring as a herringbone spring so as to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a bogie lifting hydraulic pressurizing device with a tie spring being a herringbone spring, so as to solve the problems of the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a tie spring is bogie lift hydraulic pressure device of herringbone spring, includes the roof, the inner wall sliding connection of the sliding port of seting up on roof top has two sliders, the bottom of slider all is with curb plate fixed connection, one side of curb plate all is equipped with the clamp and lifts the mechanism, the clamp is lifted the mechanism and is used for fixed and lifts the bogie, the clamp is lifted the mechanism and is all including seting up in curb plate one side the mouth, the equal fixed mounting of inner wall of seting up mouthful has screw lift, the equal fixed setting piece in one side of screw lift, the inner wall of the first recess of seting up on top of setting up the piece all alternates and is connected with first lug, the top of first lug all is through two cross bolts and setting up a threaded connection, the one end of first lug all is fixed and is equipped with and lifts the board, one side of lifting the board all is equipped with electric pressurization hydro-cylinder through mount pad fixed mounting, the output of electric pressurization hydro-cylinder and the top of connecting strip all are equipped with the clamp block, the equal fixed connection piece is equipped with the side of connecting strip, one side of seting up the equal fixed connection piece has the screw lift, one side of connecting rod top all has the other one side of connecting rod, two side of connecting rod all has the other side of connecting rod, two side of connecting rod and one side of connecting rod has the equal side of two side of connecting rod, two connecting rod and one side of other end, and one side end of connecting rod has equal fixed connection.
Preferably, two other one sides of the clamping blocks and one side of the corresponding auxiliary block are connected with connecting bolts in a threaded manner, a fixing plate is connected between every two connecting bolts in a threaded manner, the inner wall of the sliding port is rotationally connected with a first screw rod, the outer wall of the first screw rod is connected with the inner wall of a threaded hole formed in one side of the sliding block in a threaded manner, a first motor is fixedly arranged on one side of the top plate, and the output end of the first motor is fixedly connected with one end of the first screw rod.
Preferably, the screw lifter all includes fixed connection in the second lead screw that sets up a mouthful inner wall, the outer wall of second lead screw all alternates and is connected with the setting box, the both sides that set up the box inner wall rotate respectively and are connected with worm and worm wheel, one side of worm all is connected with the worm wheel meshing that corresponds, one side of setting box all fixed mounting and second motor, the output of second motor all with worm fixed connection, the inner wall of worm wheel all with second lead screw threaded connection.
Preferably, the bottom of curb plate all is fixed and is equipped with two universal wheels, every two relative the outer wall of universal wheel all with the inner wall sliding connection of slide rail, the swash plate is all fixed to one side of slide rail.
Preferably, the second recess has all been seted up at the top of curb plate one side, the screw thread setting hole has all been seted up to two faces that the second recess inner wall is relative, the equal sliding connection of inner wall of second recess has the second lug, one side of second lug all is through knob and the curb plate threaded connection who corresponds, two the outer wall of knob all sets up hole threaded connection with the screw thread that corresponds, the one end of second lug all articulates there is the connecting rod.
Preferably, a connecting column is hinged between the two connecting rods, and two connecting rods are hinged to the outer wall of the connecting column.
Preferably, the bottom ends of the two connecting rods are hinged with movable rods, and hooks are fixedly arranged at the bottom ends of the movable rods.
Preferably, the first motor is electrically connected with an external power supply through an external first motor switch and the electric pressurizing oil cylinder through an external electric pressurizing oil cylinder switch, and the second motor is electrically connected with the external power supply through an external second motor switch.
Compared with the prior art, the invention has the beneficial effects that:
(1) Through connecting one auxiliary block with the corresponding travel column, the other auxiliary block is connected with the other travel column, after the linkage column passes through the corresponding clamping block and the connecting strip at the same time, the electric pressurizing oil cylinder pushes the connected clamping block, the auxiliary block is synchronously close under the action of the linkage column, the clamping block is close to clamp a transmission shaft between steering wheels on a bogie, after the auxiliary block is pushed to be contacted with the clamping block, connecting bolts on a rotating fixing plate are respectively connected with the corresponding auxiliary block and the corresponding clamping block to fix the auxiliary block, a second motor drives a worm wheel to rotate, the worm wheel ascends along a second screw rod, so that the lifting plate drives the clamped bogie to ascend and lift, the bogie is convenient to overhaul, and the overhaul efficiency is improved;
(2) The first screw rod is driven to rotate through the first motor, the reverse threads on the first screw rod drive the sliding blocks, the sliding blocks drive the side plates to move reversely with each other under the assistance of the universal wheels, the spacing between the side plates is adjusted, the placing space is convenient to adjust according to different bogies, the transmission shafts between the bogie wheels on the bogies are positioned between the clamping blocks, and the practicability of the lifting hydraulic pressurizing device is improved;
(3) Through remove second lug to second recess one end after, first motor drive first lead screw rotates, and the interval shortens between the curb plate, accompanies the deflection between the connecting rod and drives spliced pole horizontal migration, and after the couple was hooked the transmission shaft under connecting rod and movable rod assistance, first motor reversal made the interval increase between the curb plate, and the connecting rod reverse deflection makes the spliced pole reverse movement pulling bogie remove along the swash plate, places the bogie in the device, and the operation of being convenient for is placed, labour saving and time saving.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the supporting mechanism of the present invention;
FIG. 3 is a schematic diagram of a training stage structure of the hanging ring of the present invention;
FIG. 4 is a schematic structural view of the hoisting mechanism of the present invention;
FIG. 5 is a schematic view of a part of the hoisting mechanism according to the present invention;
FIG. 6 is a schematic view showing the internal structure of the driving case of the present invention;
fig. 7 is a schematic diagram of a connection structure between a rotating base and a supporting column according to the present invention.
In the figure: 1. a top plate; 2. a slide block; 3. a side plate; 4. a universal wheel; 5. setting a block; 6. a first bump; 7. a lifting plate; 8. a mounting base; 9. an electric pressurizing oil cylinder; 10. a connecting strip; 11. a clamping block; 12. a linkage column; 13. a cross bolt; 14. an auxiliary block; 15. a travel column; 16. a limiting disc; 17. a connecting bolt; 18. a fixing plate; 19. a first screw rod; 20. a first motor; 21. a second screw rod; 22. setting a box; 23. a worm; 24. a worm wheel; 25. a second motor; 26. a slide rail; 27. a sloping plate; 28. a second bump; 29. a connecting rod; 30. a connecting column; 31. a connecting rod; 32. a movable rod; 33. a hook; 34. and (5) a knob.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, the present invention provides a technical solution: the bogie lifting hydraulic pressurizing device with the tie spring being a herringbone spring comprises a top plate 1, two sliding blocks 2 are slidably connected with the inner wall of a sliding opening formed in the top end of the top plate 1, the bottom ends of the sliding blocks 2 are fixedly connected with a side plate 3, one side of the side plate 3 is provided with a clamping lifting mechanism which is used for fixing and lifting the bogie, the clamping lifting mechanism comprises an opening formed in one side of the side plate 3, a spiral lifter is fixedly installed on the inner wall of the opening, one side of the spiral lifter is fixedly provided with a setting block 5, the inner wall of a first groove formed in the top end of the setting block 5 is fixedly connected with a first lug 6 in a penetrating manner, the top ends of the first lug 6 are fixedly connected with the setting block 5 through two cross bolts 13, one end of the first lug 6 is fixedly provided with a lifting plate 7, one side of the lifting plate 7 is fixedly provided with an electric pressurizing cylinder 9 through a mounting seat 8, the bottom of one side of the lifting plate 7 is fixedly provided with a connecting strip 10, the top end of the connecting strip 10 is fixedly provided with a clamping block 11, one side of the connecting strip 10 is fixedly provided with one side of the connecting strip 11, one side of the connecting strip 10 is fixedly provided with a corresponding clamping block 12, one side of the top end of the connecting strip 10 is fixedly provided with two auxiliary stud blocks 15, two corresponding auxiliary stud blocks 14 are fixedly connected with two auxiliary stud blocks 15, two corresponding to one side of the two auxiliary stud blocks 15 are fixedly connected with one end blocks 14, two auxiliary stud blocks 15 are fixedly connected with one end blocks 15, and one end of the other end of the auxiliary stud 15 is fixedly connected with one auxiliary stud 15, respectively, and the other end 15 is fixedly connected with one end of the other end stud 15 is fixedly and the other end 11 is fixedly connected with one end 11, a fixed plate 18 is connected between every two connecting bolts 17 in a threaded manner, the inner wall of the sliding port is rotationally connected with a first screw rod 19, the outer wall of the first screw rod 19 is in threaded connection with the inner wall of a threaded hole formed in one side of the sliding block 2, a first motor 20 is fixedly arranged on one side of the top plate 1, and the output end of the first motor 20 is fixedly connected with one end of the first screw rod 19;
as shown in fig. 1, 5 and 6, the spiral lifter comprises a second screw rod 21 fixedly connected to the inner wall of a setting port, the outer wall of the second screw rod 21 is connected with a setting box 22 in a penetrating way, two sides of the inner wall of the setting box 22 are respectively connected with a worm 23 and a worm wheel 24 in a rotating way, one side of the worm 23 is meshed with the corresponding worm wheel 24, one side of the setting box 22 is fixedly provided with a second motor 25, the output end of the second motor 25 is fixedly connected with the worm 23, the inner wall of the worm wheel 24 is in threaded connection with the second screw rod 21, two universal wheels 4 are fixedly arranged at the bottom end of a side plate 3, the outer wall of each two opposite universal wheels 4 is in sliding connection with the inner wall of a sliding rail 26, and one side of the sliding rail 26 is fixedly provided with a sloping plate 27;
as shown in fig. 1, fig. 3, fig. 6 and fig. 7, the second recess has all been seted up at the top of curb plate 3 one side, the screw thread setting hole has all been seted up to two opposite faces of second recess inner wall, the equal sliding connection of inner wall of second recess has second lug 28, one side of second lug 28 all passes through knob 34 and corresponding curb plate 3 threaded connection, the outer wall of two knobs 34 all with corresponding screw thread setting hole threaded connection, the one end of second lug 28 all articulates there is connecting rod 29, the bottom of two connecting rods 31 all articulates there is movable rod 32, the bottom of movable rod 32 all is fixed and is equipped with couple 33, first motor 20 all passes through external first motor switch, electric pressurization hydro-cylinder 9 all passes through external electric pressurization hydro-cylinder switch, second motor 25 all passes through external second motor switch respectively with external power source electric connection.
The working principle of the embodiment is as follows: when the bogie is positioned around the corresponding inclined plate 27, the first lug 6 on the lifting plate 7 is connected with the setting block 5, the cross bolt 13 is rotated to fix, the second lug 28 is moved to one end of the second groove far away from the corresponding inclined plate 27, the knob 34 is rotated to fasten, the first motor 20 drives the first screw rod 19 to rotate, the reverse thread driving slide block 2 on the first screw rod 19 drives the side plates 3 to mutually reversely move, the distance between the side plates 3 is shortened, the connecting rods 29 are accompanied with deflection to drive the connecting columns 30 to horizontally move, after the connecting rods 31 and the movable rods 32 assist in hooking the transmission shafts between the steering wheels on the bogie, the first motor 20 is reversed to enlarge the distance between the side plates 3, the connecting rods 29 are reversely deflected to reversely move the connecting columns 30 to pull the bogie to move along the inclined plate 27, the bogie is placed in the device, the operation and placement are convenient, time and labor are saved, then the first motor 20 is started again to drive the side plate 3 to move, the placing space is adjusted, the transmission shaft is positioned between the clamping blocks 11, one auxiliary block 14 is connected with the corresponding stroke column 15, the other auxiliary block 14 is connected with the other stroke column 15, the linkage column 12 passes through the corresponding clamping block 11 and the connecting strip 10 at the same time, the electric pressurizing cylinder 9 pushes the connected clamping block 11, the auxiliary block 14 is synchronously close under the action of the linkage column 12, the clamping block 11 is close to clamp the transmission shaft between steering wheels on the bogie, after the auxiliary block 14 is pushed to be contacted with the transmission shaft, the connecting bolt 17 on the rotation fixing plate 18 is respectively connected with the corresponding auxiliary block 14 and the clamping block 11 to fix the auxiliary block 14, the second motor 25 drives the worm 23 to drive the worm wheel 24 to rotate, the worm wheel 24 rises along the second screw rod 21, the lifting plate 7 drives the clamped bogie to lift up and lift, so that the bogie is convenient to overhaul, and the overhaul efficiency is improved.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.

Claims (8)

1. The bogie lifting hydraulic pressure device with the tie spring being a herringbone spring comprises a top plate (1), wherein the inner wall of a sliding opening formed in the top end of the top plate (1) is connected with two sliding blocks (2) in a sliding manner, the bottom ends of the sliding blocks (2) are fixedly connected with side plates (3), one side of each side plate (3) is provided with a clamping lifting mechanism which is used for fixing and lifting the bogie,
the method is characterized in that: the clamping lifting mechanisms comprise setting ports formed in one side of the side plate (3), screw lifters are fixedly arranged on the inner walls of the setting ports, connecting strips (10) are fixedly arranged on one sides of the screw lifters, first protruding blocks (6) are fixedly connected to the inner walls of first grooves formed in the top ends of the setting blocks (5) in a penetrating mode, the top ends of the first protruding blocks (6) are fixedly provided with lifting plates (7) through two cross bolts (13) and the threaded connection of the setting blocks (5), one ends of the first protruding blocks (6) are fixedly provided with auxiliary lifting plates (7), one sides of the lifting plates (7) are fixedly provided with electric pressurizing oil cylinders (9) through mounting seats (8), connecting strips (10) are fixedly arranged at the bottoms of one sides of the lifting plates (7), clamping blocks (11) are fixedly arranged at the output ends of the electric pressurizing oil cylinders (9) and the top ends of the connecting strips (10), stroke ports are formed in one sides of the top ends of the connecting strips (10), linkage columns (12) are fixedly connected to one side of the inner walls of the stroke ports in a penetrating mode, one side of each of the connecting strip (12) is fixedly provided with one auxiliary lifting cylinder (14), one auxiliary lifting cylinder (14) is fixedly arranged at one side of the other, and the other auxiliary lifting cylinders (14) are fixedly arranged at the top ends of the other auxiliary lifting cylinders, the inner walls of through holes formed in one side of each auxiliary block (14) are respectively connected with another stroke column (15) in a penetrating mode, one ends of the other two stroke columns (15) are respectively fixedly connected with the corresponding auxiliary block (14), and one sides of the outer walls of the stroke columns (15) are respectively connected with a limiting disc (16) in a threaded mode.
2. The bogie lifting hydraulic pressure device with a series of springs being herringbone springs according to claim 1, wherein: two in addition one side of pressing from both sides tight piece (11) and one side of corresponding auxiliary block (14) equal threaded connection have connecting bolt (17), every two equal threaded connection has fixed plate (18) between connecting bolt (17), the inner wall of sliding port rotates and connects first lead screw (19), the outer wall of first lead screw (19) all with the inner wall threaded connection of the screw hole of one side of slider (2) set up, one side fixed mounting of roof (1) has first motor (20), the output of first motor (20) and the one end fixed connection of first lead screw (19).
3. The bogie lifting hydraulic pressure device with a series of springs being herringbone springs according to claim 1, wherein: the screw elevator all includes fixed connection in second lead screw (21) that sets up a mouthful inner wall, the outer wall of second lead screw (21) all alternates and is connected with and sets up box (22), the both sides that set up box (22) inner wall rotate respectively and are connected with worm (23) and worm wheel (24), one side of worm (23) all is connected with corresponding worm wheel (24) meshing, one side of setting box (22) all fixed mounting and second motor (25), the output of second motor (25) all with worm (23) fixed connection, the inner wall of worm wheel (24) all with second lead screw (21) threaded connection.
4. The bogie lifting hydraulic pressure device with the tie spring being a herringbone spring as claimed in claim 2, wherein: the bottom of curb plate (3) is all fixed and is equipped with two universal wheels (4), every two relative the outer wall of universal wheel (4) all with the inner wall sliding connection of slide rail (26), one side of slide rail (26) is all fixed and is equipped with swash plate (27).
5. The bogie lifting hydraulic pressure device with the tie spring being a herringbone spring as claimed in claim 4, wherein: the top of curb plate (3) one side has all been seted up the second recess, screw thread setting hole has all been seted up to two faces that the second recess inner wall is relative, the equal sliding connection of inner wall of second recess has second lug (28), one side of second lug (28) all is through knob (34) and curb plate (3) threaded connection that corresponds, two the outer wall of knob (34) all is with the screw thread setting hole threaded connection that corresponds, connecting rod (29) have all been articulated to the one end of second lug (28).
6. The bogie lifting hydraulic pressure device with the tie spring being a herringbone spring as claimed in claim 5, wherein: a connecting column (30) is hinged between the two connecting rods (29), and two connecting rods (31) are hinged to the outer wall of the connecting column (30).
7. The bogie lifting hydraulic pressure device with the tie spring being a herringbone spring as claimed in claim 6, wherein: the bottom ends of the two connecting rods (31) are hinged with movable rods (32), and hooks (33) are fixedly arranged at the bottom ends of the movable rods (32).
8. The bogie lifting hydraulic pressure device with the tie spring being a herringbone spring as claimed in claim 7, wherein: the first motor (20) is electrically connected with an external power supply through an external first motor switch and the electric pressurizing oil cylinder (9) through an external electric pressurizing oil cylinder switch, and the second motor (25) is electrically connected with the external power supply through an external second motor switch respectively.
CN202310288552.6A 2023-03-23 2023-03-23 Bogie lifting hydraulic pressurizing device with tie spring being herringbone spring Pending CN116239044A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310288552.6A CN116239044A (en) 2023-03-23 2023-03-23 Bogie lifting hydraulic pressurizing device with tie spring being herringbone spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310288552.6A CN116239044A (en) 2023-03-23 2023-03-23 Bogie lifting hydraulic pressurizing device with tie spring being herringbone spring

Publications (1)

Publication Number Publication Date
CN116239044A true CN116239044A (en) 2023-06-09

Family

ID=86631317

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310288552.6A Pending CN116239044A (en) 2023-03-23 2023-03-23 Bogie lifting hydraulic pressurizing device with tie spring being herringbone spring

Country Status (1)

Country Link
CN (1) CN116239044A (en)

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