CN112129556B - Device for holding and lifting test bed counter-force beam - Google Patents

Device for holding and lifting test bed counter-force beam Download PDF

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Publication number
CN112129556B
CN112129556B CN202011008070.3A CN202011008070A CN112129556B CN 112129556 B CN112129556 B CN 112129556B CN 202011008070 A CN202011008070 A CN 202011008070A CN 112129556 B CN112129556 B CN 112129556B
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lifting
wedge
reaction beam
guide rail
reaction
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CN112129556A (en
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王金田
刘洪涛
谭富星
李永生
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CRRC Changchun Railway Vehicles Co Ltd
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CRRC Changchun Railway Vehicles Co Ltd
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Priority to PCT/CN2020/118302 priority patent/WO2022061861A1/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00Testing of vehicles
    • G01M17/08Railway vehicles

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Abstract

The invention discloses a device for clasping and lifting a reaction beam of a test bed, which comprises two stand columns (3) arranged at intervals and a reaction beam (2) capable of moving up and down along the outer side surfaces of the stand columns (3) and being positioned, wherein clasping mechanisms (5) used for fixing the reaction beam (2) on the stand columns (3) are respectively arranged at two ends of the reaction beam (2), a driving mechanism (6) used for driving the reaction beam (2) to ascend or descend is arranged between the stand columns (3) and the reaction beam (2), and a groove-shaped notch (13) used for assembling the driving mechanism (6) is arranged on one surface, which is attached to the stand columns (3), of the reaction beam (2). The device simple structure, safe and reliable just make things convenient for the dismouting, can be for vehicle or bogie test provide very big additional action, can be safe effectual shorten installation time, for being striven for more test time by the test piece test, show improvement efficiency of software testing.

Description

Device for holding and lifting test bed counter-force beam
Technical Field
The invention relates to the technical field of rail vehicle test devices, in particular to a device for lifting, descending and fixing a reaction beam of a test bed in the design process of a rail vehicle.
Background
With the rapid development of the rail transit industry, vehicle design technology is continuously innovated, and the continuous verification of the performance and reliability of vehicle design is continuously increased, so that safe and reliable test equipment cannot be ignored.
A typical test bed includes a reaction beam, the height of which needs to be adjusted and fixed during the test, and the prior art has the following disadvantages:
firstly, the counter-force beam is hoisted by the crown block, so that the operation efficiency is low, and potential safety hazards exist.
Secondly, the reaction cross beam is fixed by adopting a front clamping pressure plate and a rear clamping pressure plate, the weight of the front clamping pressure plate and the rear clamping pressure plate is large, about 453kg, manual carrying is not movable, a gantry frame is arranged above the clamping rear pressure plate to obstruct the crane for lifting, and the cross beam is not convenient to disassemble and assemble.
Moreover, the crossbeam can not independently go up and down, also can only lift by means of the overhead traveling crane, and it is inconvenient to use.
And finally, the mounting height of the cross beam is adjusted by hoisting the overhead travelling crane, so that the time consumption, the labor consumption and the precision are low, and potential safety hazards exist.
Disclosure of Invention
The invention aims to provide a device for holding and lifting a reaction beam of a test bed. The device has the advantages of simple structure, safety, reliability, easy operation, strong universality and high operation efficiency.
In order to achieve the purpose, the invention provides a device for holding and lifting a reaction beam of a test bed, which comprises two stand columns arranged at intervals and a reaction beam capable of moving up and down along the outer side surfaces of the stand columns and being positioned, wherein holding mechanisms for fixing the reaction beam on the stand columns are respectively arranged at two ends of the reaction beam, a driving mechanism for driving the reaction beam to ascend or descend is arranged between the stand columns and the reaction beam, and a groove-shaped notch for assembling the driving mechanism is arranged on one surface, which is attached to the stand columns, of the reaction beam.
Preferably, each of the clasping mechanisms comprises a wedge-shaped claw supporting guide rail pressing strip and a double-head screw rod, one end of the double-head screw rod is provided with a wedge-shaped claw; the wedge-shaped claw supporting guide rail pressing strips are arranged on one surface of the upright post, which is back to the counter-force beam, in a left-right symmetrical mode along the vertical direction; the wedge-shaped claw is provided with a through hole and sleeved at one end of the double-end screw rod through the through hole, and one end of the double-end screw rod is provided with a first nut which is used for mutually pressing the wedge-shaped claw and the wedge-shaped claw supporting guide rail pressing strip for fixing.
Preferably, each of the clasping mechanisms includes four double-headed screws, two of the double-headed screws are located on one side of the column and are provided on the upper surface and the lower surface of the reaction beam, and the other two of the double-headed screws are located on the other side of the column and are provided on the upper surface and the lower surface of the reaction beam.
Preferably, the top surface and the bottom surface of the reaction beam are provided with holding bolt guide blocks corresponding to the stud screws, the stud screws respectively penetrate through holes of the two holding bolt guide blocks arranged at the front and the back at intervals, and the other ends of the stud screws are provided with second nuts.
Preferably, the wedge-shaped claw support guide rail pressing strip is provided with a first wedge surface, the wedge-shaped claw is provided with a second wedge surface which can be attached to and pressed against the first wedge surface, and the wedge-shaped claw support guide rail pressing strip and the wedge-shaped claw are mutually meshed through the first wedge surface and the second wedge surface.
Preferably, the driving mechanism is a servo motor turbine speed reduction screw rod lifter and comprises a screw rod lifter suspension, a servo motor, a turbine worm speed reducer, a lifting screw rod nut and a lifting nut bracket; the screw rod lifter suspension is fixed on one surface of the upright post, which is attached to the counter-force beam, and is positioned above the counter-force beam, the servo motor and the worm gear reducer are arranged on the screw rod lifter suspension, the upper end of the lifting screw rod is connected with the worm gear reducer, and the lower end of the lifting screw rod is matched with the lifting screw rod nut; the lifting screw nut is arranged on the lifting nut bracket, and the lifting nut bracket upwards supports the counter-force beam; the servo motor drives the lifting screw rod to rotate in the forward and reverse directions through the worm gear and worm reducer, and then the lifting nut bracket is driven to move up and down through the matching of the lifting screw rod and the lifting screw rod nut, so that the counter-force beam is lifted.
Preferably, the lifting nut bracket is L-shaped, and lifts the reaction beam upward through a horizontal cross plate, and the lifting lead screw nut is mounted on the horizontal cross plate of the lifting nut bracket; the projection of the groove-shaped notch is T-shaped, the vertical plate of the lifting nut bracket is positioned in the wide groove of the groove-shaped notch, and the lower end of the lifting screw penetrates through the narrow groove of the groove-shaped notch to be matched with the lifting screw nut.
Preferably, further comprises a guide pulley mechanism; the guide pulley mechanism comprises a rolling guide rail slider and a rolling guide rail bar, the rolling guide rail slider is fixed on the back face of the vertical plate of the lifting nut bracket through bolts, the rolling guide rail bar is fixed on one face, attached to the counter-force beam, of the stand column through bolts, and the rolling guide rail slider is in up-and-down sliding fit with the rolling guide rail bar so as to guide the counter-force beam to lift.
Preferably, the servo motor is vertically arranged and is in transmission connection with the worm gear reducer through a servo motor right-angle planetary reducer.
Preferably, the lifting device further comprises a servo motor control system for controlling the servo motor to operate, so that the lifting screw rod rotates in the forward and reverse directions to drive the reaction beam to move up and down to a specified position.
The device for clasping and lifting the counter-force cross beam of the test bed is mainly used for facilitating the test bed to adapt to a single-section whole vehicle or single bogie test and quickly and safely adjusting the structure of the test bed, is used for guiding a vehicle or a bogie to accurately and efficiently enter a specified test area, can provide a great auxiliary effect for the vehicle or bogie test, can safely and effectively shorten the installation time, strives for more test time for a tested piece test and improves the test efficiency, and can be applied to transition guidance of rail vehicles or bogies with different track gauges.
Drawings
FIG. 1 is an isometric view of an apparatus for hugging and lifting a test bed reaction beam as disclosed in an embodiment of the present invention;
FIG. 2 is a schematic structural view of the clasping mechanism and the driving mechanism on the right side of FIG. 1;
FIG. 3 is a schematic structural view of a counter-force beam with a groove-shaped notch and a holding bolt guide block;
FIG. 4 is a schematic structural view of a servo motor and a worm gear reducer arranged on a lead screw lifter suspension;
FIG. 5 is a schematic view of the lifting screw nut disposed on the lifting nut bracket;
FIG. 6 is a cross-sectional view of the lift screw nut disposed on the lift nut bracket;
FIG. 7 is a schematic structural view of the clasping mechanism and the driving mechanism shown after the upper half of the upright is cut away;
FIG. 8 is a schematic view of the clasping mechanism and the driving mechanism shown in FIG. 7 with the reaction beam further omitted;
FIG. 9 is a schematic structural view of a wedge claw;
FIG. 10 is a schematic structural view of a wedge-shaped claw disposed on a double-headed screw;
FIG. 11 is a schematic structural view of a wedge-shaped claw support guide rail pressing bar;
fig. 12 is a schematic structural diagram of a servo motor control system.
In the figure:
1. test bed 2, reaction beam 3, upright post 4, supporting part 5, holding mechanism 6, driving mechanism 7, wedge-shaped claw bearing guide rail pressing bar 8, double-end screw 9, wedge-shaped claw 10, first nut 11, holding bolt guide block 12, second nut 13, groove-shaped notch 14, lead screw elevator suspension frame 15, servo motor 16, turbine worm reducer 17, lifting lead screw 18, lifting lead screw nut 19, lifting nut bracket 20, servo motor right-angle planetary reducer 21, rolling guide rail slider 22, rolling guide rail bar 23, first plane 24, second plane 25, first wedge surface 26, second wedge surface 27 and servo motor control system
Detailed Description
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In this document, terms such as "upper, lower, left, right" and the like are established based on positional relationships shown in the drawings, and the corresponding positional relationships may vary depending on the drawings, and therefore, they are not to be construed as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
Referring to fig. 1 and fig. 2, fig. 1 is an isometric view of a device for clasping and lifting a test bed reaction beam according to an embodiment of the present invention; fig. 2 is a schematic structural view of the clasping mechanism and the driving mechanism on the right side in fig. 1.
As shown in the drawings, in one embodiment, the device for clasping and lifting a reaction beam of a test bed provided by the invention is used for adjusting and fixing the height of the reaction beam 2 of the test bed 1, the test bed 1 is provided with four upright posts 3, each upright post 3 is respectively provided with an oblique supporting part 4 for ensuring the stability of the structure, the upper end of each supporting part 4 is hinged with a support on the side surface of the upright post 3, and the lower end of each supporting part 4 is hinged with a support on the ground.
The reaction beam 2 is located outside the two columns 3 on the near side of the figure, and is attached to the outer side surfaces of the two columns 3, and can move up and down along the outer side surfaces of the columns 3 for positioning, in order to perform positioning, two ends of the reaction beam 2 are respectively provided with the holding mechanisms 5 for fixing the reaction beam 2 on the columns 3, in order to adjust the height of the reaction beam 2, a driving mechanism 6 for driving the reaction beam 2 to ascend or descend is arranged between the outer side surfaces of the columns and the top surfaces of the two ends of the reaction beam 2, the total two holding mechanisms 5 and the two driving mechanisms 6 are provided, when the height of the reaction beam 2 is adjusted, the two driving mechanisms 6 synchronously run, and when the reaction beam 2 is fixed, the two holding mechanisms 5 are locked simultaneously.
Referring to fig. 9, 10 and 11, fig. 9 is a schematic structural view of the wedge-shaped claw; FIG. 10 is a schematic structural view of a wedge-shaped claw disposed on a double-headed screw; fig. 11 is a structural schematic diagram of a wedge-shaped claw supporting guide rail pressing strip.
Each holding mechanism 5 mainly comprises a wedge-shaped claw supporting guide rail pressing strip 7 and a double-head screw 8, and one end of the double-head screw 8 is provided with a wedge-shaped claw 9; the wedge-shaped claw supporting guide rail pressing strips 7 are fixed on the inner side surface of the upright post 3 in a bilateral symmetry mode along the vertical direction; the wedge-shaped claw 9 is provided with a through hole and is sleeved at one end of the double-thread screw 8 through the through hole, and one end of the double-thread screw 8 is provided with a first nut 10 used for mutually pressing the wedge-shaped claw 9 and the wedge-shaped claw supporting guide rail pressing strip 7.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a slot-shaped notch and a holding bolt guide block on a reaction beam.
As shown in the drawing, the number of the double-headed screws 8 of each clasping mechanism 5 is four, two of the double-headed screws 8 are located on the right side of the column 3 and provided on the upper surface and the lower surface of the reaction beam 2, and the other two double-headed screws 8 are located on the left side of the column 3 and provided on the upper surface and the lower surface of the reaction beam 2.
The top surface and the bottom surface of the counter-force beam 2 are provided with holding bolt guide blocks 11 corresponding to the stud screws 8, the stud screws 8 respectively penetrate through holes of the two holding bolt guide blocks 11 arranged at the front and back intervals, and the other ends of the stud screws 8 are provided with second nuts 12.
For the whole reaction cross beam 2, the holding bolt guide block 11 is divided into two sets which are the same left and right, each set is eight, the eight sets are respectively welded on the upper plane and the lower plane of the reaction cross beam 2 and are in a symmetrical state, and the holding bolt guide block 11 is provided with a through hole so as to pass through the double-headed screw 8.
One surface of the reaction beam 2, which is attached to the upright 3, is provided with a groove-shaped notch 13 for assembling a driving mechanism, and the groove-shaped notch 13 is approximately T-shaped in projection and is provided with a wide groove part with a relatively large size and a narrow groove part with a relatively small size.
With continuing reference to fig. 4, 5 and 6, fig. 4 is a schematic structural view of a servo motor and a worm gear reducer mounted on a lead screw lifter suspension; FIG. 5 is a schematic view of the lifting screw nut disposed on the lifting nut bracket; fig. 6 is a cross-sectional view of the elevator screw nut disposed on the elevator nut bracket.
As shown in the figure, the driving mechanism adopts a servo motor turbine speed reduction screw rod lifter, and mainly comprises a screw rod lifter suspension 14, a servo motor 15, a turbine worm speed reducer 16, a lifting screw rod 17, a lifting screw rod nut 18, a lifting nut bracket 19 and the like.
The lead screw lifting device is characterized in that a lead screw lifting device suspension 14 is fixed on one surface, which is attached to the reaction cross beam 2, of the stand column 3 and is located above the reaction cross beam 2, a servo motor 15 and a worm gear reducer 16 are arranged on the lead screw lifting device suspension 14, the upper end of a lifting lead screw 17 is connected with the worm gear reducer 16, the lower end of the lifting lead screw 17 is matched with a lifting lead screw nut 18, and the servo motor 15 is vertically arranged and is in transmission connection with the worm gear reducer 16 through a servo motor right-angle planetary reducer 20.
The lifting nut bracket 19 is L-shaped, the counter-force beam 2 is upwards lifted through a horizontal transverse plate, the lifting screw nut 18 is installed on the horizontal transverse plate of the lifting nut bracket 19, the groove-shaped notch 13 is designed into a T shape, a vertical plate of the lifting nut bracket 19 can be located in a wide groove of the groove-shaped notch 13, and the lower end of the lifting screw 17 penetrates through a narrow groove of the groove-shaped notch 13 to be matched with the lifting screw nut 18.
In order to improve the stability of the elevation of the reaction beam 2, a guide pulley mechanism may be further provided. The guide pulley mechanism mainly comprises a rolling guide rail slider 21 and a rolling guide rail bar 22, wherein the rolling guide rail slider 21 is fixed on the back surface of a vertical plate of the lifting nut bracket 19 through bolts, the rolling guide rail bar 22 is fixed on one surface, which is attached to the reaction beam 2, of the upright column 3 through bolts, and the rolling guide rail slider 21 and the rolling guide rail bar 22 are in up-and-down sliding fit to guide the reaction beam 2 to lift.
During operation, the servo motor 15 drives the lifting screw 17 to rotate forward and backward through the servo motor right-angle planetary reducer 20 and the worm gear reducer 16, and further drives the lifting nut bracket 19 and the rolling guide rail slider 21 to move up and down along the rolling guide rail bar 22 through the matching of the lifting screw 17 and the lifting screw nut 18, so that the reaction beam 2 is lifted and lowered.
Referring to fig. 7 and 8, fig. 7 is a schematic structural view of the clasping mechanism and the driving mechanism shown after cutting off the upper half of the upright post; fig. 8 is a schematic structural view of the clasping mechanism and the driving mechanism shown in fig. 7 with the reaction beam further omitted.
As shown in the figure, the wedge-shaped claw supporting guide rail pressing strips 7 are provided with through holes and are vertically installed on one side of the upright post 3, which is opposite to the counter-force beam 2, through bolts, two wedge-shaped claw supporting guide rail pressing strips 7 are symmetrically installed on each upright post 3, a first plane 23 of each wedge-shaped claw supporting guide rail pressing strip 7 is attached to the inner side surface of the upright post 3, a second plane 24 of each wedge-shaped claw supporting guide rail pressing strip 7 is arranged on the outer side, two ends of a double-headed screw 8 are tapped with threads, a wedge-shaped claw 9 is provided with through holes, one end of each double-headed screw 8 penetrates through the through holes of the two clasping bolt guide blocks 11, one end of each double-headed screw 8 penetrates through the through hole of one wedge-shaped claw 9, each upright post 3 is fixed through a set of wedge-shaped claw type clasping mechanism, namely the double-headed screw 8 is locked through a first nut 10 and a second nut 12, the counter-force beam 2 is fixed on the upright post 3, the wedge-shaped claw supporting guide rail pressing strips 7 are provided with first wedge surfaces 25, the wedge-shaped claw 9 is provided with a second wedge surface 26 which can be attached to and pressed tightly against the first wedge surface 25, and after the wedge-shaped claw 9 is fixed, the wedge-shaped claw support guide rail pressing strip 7 is meshed with the wedge-shaped claw 9 through the first wedge surface 25 and the second wedge surface 26.
Referring to fig. 9, fig. 9 is a schematic structural diagram of an electric servo cylinder control system.
The device further comprises a servo motor control system 27 which mainly comprises a PLC beam lifting control panel unit p, a PLC beam lifting control unit q, a power supply control and stabilized voltage supply unit r, a servo electric driver s, a main circuit reactor, a power supply filter t, a control system cabinet u and the like, so that the servo motor 15 is controlled to operate, the lifting screw 17 rotates forwards and backwards, and the reaction beam 2 is driven to move up and down to a specified position.
The above embodiments are merely preferred embodiments of the present invention, and are not limited thereto, and on the basis of the above embodiments, various embodiments can be obtained by performing targeted adjustment according to actual needs. For example, the elevating screw 17 is driven to rotate in the forward and reverse directions by another power member capable of rotating, or the double-headed screw 8 is attached to the reaction beam 2 in another manner. This is not illustrated here, since many implementations are possible.
The invention has simple structure, safety and reliability, is convenient to disassemble and assemble, can provide great auxiliary action for vehicle or bogie tests, can safely and effectively shorten the installation time, strives for more test time for tested piece tests, and obviously improves the test efficiency.
The device for clasping and lifting the reaction beam of the test bed provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (7)

1. The device for holding and lifting the reaction beam of the test bed comprises two stand columns (3) arranged at intervals and reaction beams (2) which can move up and down along the outer side surfaces of the stand columns (3) and are positioned, and is characterized in that holding mechanisms (5) used for fixing the reaction beams (2) on the stand columns (3) are respectively arranged at two ends of each reaction beam (2), a driving mechanism (6) used for driving the reaction beams (2) to ascend or descend is arranged between each stand column (3) and each reaction beam (2), and a groove-shaped notch (13) used for assembling the driving mechanism (6) is arranged on one surface, which is attached to each stand column (3), of each reaction beam (2);
each clasping mechanism (5) comprises a wedge-shaped claw supporting guide rail pressing bar (7) and a double-end screw (8) with one end provided with a wedge-shaped claw (9); the wedge-shaped claw supporting guide rail pressing strips (7) are arranged on one surface, back to the counter-force cross beam (2), of the stand column (3) in a bilaterally symmetrical mode along the vertical direction; the wedge-shaped claw (9) is provided with a through hole and sleeved at one end of the double-head screw (8) through the through hole, and one end of the double-head screw (8) is provided with a first nut (10) used for mutually pressing the wedge-shaped claw (9) and the wedge-shaped claw support guide rail pressing strip (7) for fixing;
each clasping mechanism (5) comprises four double-threaded screws (8), wherein two double-threaded screws (8) are positioned on one side of the upright post (3) and are arranged on the upper surface and the lower surface of the counter-force beam (2), and the other two double-threaded screws (8) are positioned on the other side of the upright post (3) and are arranged on the upper surface and the lower surface of the counter-force beam (2);
the wedge-shaped claw supporting guide rail pressing strip (7) is provided with a first wedge surface (25), the wedge-shaped claw (9) is provided with a second wedge surface (26) which can be attached to and pressed by the first wedge surface (25), and the wedge-shaped claw supporting guide rail pressing strip (7) and the wedge-shaped claw (9) are mutually meshed through the first wedge surface (25) and the second wedge surface (26).
2. The device for clasping and lifting a test bed reaction beam according to claim 1, characterized in that the reaction beam (2) is provided with clasping bolt guide blocks (11) corresponding to the threaded studs (8) on the top and bottom surfaces thereof, the threaded studs (8) respectively pass through the through holes of the two clasping bolt guide blocks (11) arranged at a distance from each other in the front-rear direction, and the threaded studs (8) are provided with second nuts (12) on the other ends thereof.
3. The device for clasping and lifting the test bed reaction beam according to claim 1, characterized in that the driving mechanism (6) is a servo motor worm gear reduction lead screw lifter comprising a lead screw lifter suspension (14), a servo motor (15), a worm gear reducer (16), a lifting lead screw (17), a lifting lead screw nut (18), a lifting nut bracket (19); the screw rod lifter suspension (14) is fixed on one surface, which is attached to the reaction cross beam (2), of the upright column (3) and is positioned above the reaction cross beam (2), the servo motor (15) and the worm gear reducer (16) are arranged on the screw rod lifter suspension (14), the upper end of the lifting screw rod (17) is connected with the worm gear reducer (16), and the lower end of the lifting screw rod (17) is matched with the lifting screw rod nut (18); the lifting screw nut (18) is mounted on the lifting nut bracket (19), and the lifting nut bracket (19) upwards lifts the counter-force beam (2); the servo motor (15) drives the lifting screw rod (17) to rotate in the forward and reverse directions through the worm gear and worm reducer (16), and then the lifting screw rod (17) and the lifting screw rod nut (18) are matched to drive the lifting nut bracket (19) to move up and down, so that the reaction beam (2) is lifted.
4. The device for clasping and lifting a test bed reaction beam according to claim 3, characterized in that the lifting nut bracket (19) is L-shaped and lifts the reaction beam (2) upwards through a horizontal cross plate, the lifting lead screw nut (18) being mounted to the horizontal cross plate of the lifting nut bracket (19); the projection of the groove-shaped notch (13) is T-shaped, the vertical plate of the lifting nut bracket (19) is positioned in the wide groove of the groove-shaped notch (13), and the lower end of the lifting screw rod (17) penetrates through the narrow groove of the groove-shaped notch (13) to be matched with the lifting screw rod nut (18).
5. The apparatus for clasping and lifting a test bed reaction beam of claim 4 further comprising a guide block mechanism; the guide pulley mechanism comprises a rolling guide rail slider (21) and a rolling guide rail bar (22), the rolling guide rail slider (21) is fixed on the back face of a vertical plate of the lifting nut bracket (19) through bolts, the rolling guide rail bar (22) is fixed on one face, attached to the stand column (3) and the reaction beam (2), of the stand column through bolts, and the rolling guide rail slider (21) can slide up and down along the rolling guide rail bar (22) to guide the reaction beam (2) to lift.
6. The device for clasping and lifting the test bed reaction beam according to claim 5, characterized in that the servo motor (15) is vertically arranged and is in transmission connection with the worm gear reducer (16) through a servo motor right-angle planetary reducer (20).
7. The device for clasping and lifting the reaction beam of the test bed as claimed in any one of claims 3 to 6, characterized in that it further comprises a servo motor control system for controlling the operation of the servo motor (15) to make the lifting screw (17) rotate in forward and reverse directions to drive the reaction beam (2) to move up and down to a designated position.
CN202011008070.3A 2020-09-23 2020-09-23 Device for holding and lifting test bed counter-force beam Active CN112129556B (en)

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Application Number Priority Date Filing Date Title
CN202011008070.3A CN112129556B (en) 2020-09-23 2020-09-23 Device for holding and lifting test bed counter-force beam
PCT/CN2020/118302 WO2022061861A1 (en) 2020-09-23 2020-09-28 Device for holding and lifting counter-force beam of test bed

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CN112129558B (en) * 2020-09-23 2022-02-11 中车长春轨道客车股份有限公司 Test bench counter-force crossbeam enclasping lifting device
CN112945588B (en) * 2021-01-28 2022-10-25 中车长春轨道客车股份有限公司 Lifting and positioning mechanism for counterforce cross beam
CN112945589A (en) * 2021-01-28 2021-06-11 中车长春轨道客车股份有限公司 Test bed counter-force crossbeam lifting positioning device

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