WO2022061861A1

WO2022061861A1 - Device for holding and lifting counter-force beam of test bed

Info

Publication number: WO2022061861A1
Application number: PCT/CN2020/118302
Authority: WO
Inventors: 王金田; 刘洪涛; 谭富星; 李永生
Original assignee: 中车长春轨道客车股份有限公司
Priority date: 2020-09-23
Filing date: 2020-09-28
Publication date: 2022-03-31
Also published as: CN112129556B; CN112129556A

Abstract

A device for holding and lifting a counter-force beam of a test bed. The device comprises two stand columns (3) provided at an interval and a counter-force beam (2) capable of moving up and down along the outer side surfaces of the stand columns (3) and being positioned. Holding mechanisms (5) used for fixing the counter-force beam (2) to the stand columns (3) are respectively provided at the two ends of the counter-force beam (2); driving mechanisms (6) used for driving the counter-force beam (2) to ascend or descend are provided between the stand columns (3) and the counter-force beam (2); groove-shaped notches (13) used for assembling the driving mechanisms (6) are formed in the surface, attached to the stand columns (3), of the counter-force beam (2). The device is simple in structure, safe, reliable, convenient in disassembling and assembling, and capable of providing a great auxiliary effect for vehicle or bogie tests, mounting time can be safely and effectively shortened, more test time is brought for tested part tests, and the test efficiency is remarkably improved.

Description

Device for gripping and lifting the reaction beam of the test bench

This application claims the priority of the invention patent application filed on September 23, 2020, with the application number of 202011008070.3 and the invention titled "Device for Holding and Lifting the Reaction Beam of a Test Bed", the entire contents of which are by reference Incorporated in this application.

technical field

The invention relates to the technical field of rail vehicle testing devices, in particular to a device for lifting, lowering and fixing a reaction force beam of a test stand in the design process of a rail vehicle.

Background technique

With the vigorous development of the rail transit industry, vehicle design technology has been continuously innovating, and the continuous verification of vehicle design performance and reliability has continued to increase. Therefore, safe and reliable test equipment cannot be ignored.

A typical test bench includes a reaction beam. During the test, the height of the reaction beam needs to be adjusted and fixed. The existing equipment has the following shortcomings:

First of all, the use of overhead cranes to lift the reaction beam, the operation efficiency is low, and there are potential safety hazards.

Secondly, the front and rear clamping plates are used to fix the reaction force beam. The front and rear clamping plates are heavy, about 453kg, and cannot be moved manually. Above the clamping plate, there is a gantry frame obstacle to lift the beam, which is inconvenient to disassemble and assemble the beam.

Furthermore, the beam cannot be lifted and lowered independently, and can only be lifted by means of a crane, which is inconvenient to use.

Finally, adjusting the installation height of the beam by lifting the crane is not only time-consuming, labor-intensive, and low in precision, but also has potential safety hazards.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a device for holding and lifting the reaction force beam of the test stand. The device is simple in structure, safe and reliable, easy to operate, and has strong versatility and high working efficiency.

In order to achieve the above purpose, the present invention provides a device for holding and lifting the reaction force beam of the test bench, including two upright columns arranged at intervals and a reaction force beam that can be moved up and down along the outer surface of the column and positioned. Both ends of the force beam are respectively provided with a holding mechanism for fixing the reaction beam on the column, and a drive mechanism for driving the reaction beam to rise or fall is arranged between the column and the reaction beam. , a groove-shaped cutout for assembling the drive mechanism is provided on the side of the reaction force beam that is in contact with the upright column.

Preferably, each of the gripping mechanisms comprises a wedge-shaped hook support rail bead and a double-ended screw with a wedge-shaped hook at one end; the wedge-shaped hook support rail bead is vertically arranged on the upright column in a left-right symmetrical manner The side facing away from the reaction force beam; the wedge-shaped hook is provided with a through hole and is sleeved on one end of the double-ended screw through the through hole, and one end of the double-ended screw is provided with a wedge-shaped hook for attaching the wedge-shaped hook. The claw and the wedge-shaped hook claw support the first nut of the guide rail pressing strip to press each other for fixing.

Preferably, each of the tightening mechanisms includes four of the double-ended screws, two of which are located on one side of the upright column and on the upper and lower surfaces of the reaction force beam, and the other two Each of the double-ended screws is located on the other side of the upright column and arranged on the upper surface and the lower surface of the reaction force beam.

Preferably, the top surface and the bottom surface of the reaction force beam are provided with guide blocks for holding bolts corresponding to each of the double-ended screws, and each of the double-ended screws passes through the two spaced front and rear holding bolts respectively. The through hole of the guide block, the other end of the double-ended screw is provided with a second nut.

Preferably, a first wedge surface is provided on the wedge-shaped claws supporting the rail pressing strip, the wedge-shaped claws are provided with a second wedge surface that can fit and press against the first wedge surface, and the wedge-shaped claws support the guide rail. The pressing strip and the wedge-shaped hook are engaged with each other through the first wedge surface and the second wedge surface.

Preferably, the drive mechanism is a servo motor turbine deceleration screw lift, including a screw lift suspension, a servo motor, a turbine worm reducer, a lift screw, a lift screw nut, and a lift nut bracket; the screw lift The suspension is fixed on the side of the column and the reaction force beam and is located above the reaction force beam. The servo motor and the worm gear reducer are arranged on the lead screw elevator suspension. The upper end of the lead screw is connected with the turbine worm reducer, and the lower end of the lift screw is matched with the lift screw nut; the lift screw nut is mounted on the lift nut bracket, and the lift nut The bracket lifts the reaction force beam upward; the servo motor drives the lifting screw to rotate forward and reverse through the worm gear reducer, and then drives the lifting screw through the cooperation of the lifting screw and the lifting screw nut. The lifting nut bracket moves up and down, so that the reaction force beam is lifted and lowered.

Preferably, the lifting nut bracket is L-shaped, which lifts the reaction force beam upward through a horizontal horizontal plate, and the lifting screw nut is installed on the horizontal horizontal plate of the lifting nut bracket; The projection of the incision is T-shaped, the vertical vertical plate of the lifting nut bracket is located in the wide groove of the groove-shaped incision, and the lower end of the elevator screw passes through the narrow groove of the groove-shaped incision and the lifting wire Match the lever nut.

Preferably, it further includes a guide pulley mechanism; the guide pulley mechanism includes a rolling guide block and a rolling guide strip, the rolling guide block is fixed on the back of the vertical vertical plate of the lifting nut bracket by bolts, and the rolling guide block is The guide rail is fixed on the side of the column and the reaction force beam by bolts, and the rolling guide slider slides up and down with the rolling guide rail to guide the reaction beam to move up and down.

Preferably, the servo motor is arranged vertically, and is drivingly connected with the worm gear reducer through a right-angle planetary reducer of the servo motor.

Preferably, a servo motor control system is further included to control the operation of the servo motor, so that the lifting screw rotates forward and reverse, and drives the reaction force beam to move up and down to a designated position.

The device for holding and lifting the reaction force beam of the test bench provided by the present invention is mainly used to facilitate the test bench to adapt to the test of a single-section vehicle or a single bogie, and to adjust the structure of the test bench quickly and safely. Guide the vehicle or bogie to enter the designated area of the test accurately and efficiently, which can provide great assistance for the vehicle or bogie test, shorten the installation time safely and effectively, gain more test time for the test piece test, and improve the test It is not only convenient, efficient, labor-saving, accurate in lifting position, but also has a simple structure and is easy to process and install. The manufacturing difficulty and cost are low, and the structural strength is safe and reliable.

Description of drawings

1 is an axonometric view of a device for holding and lifting a reaction force beam of a test stand disclosed in an embodiment of the present invention;

Fig. 2 is the structural representation of the gripping mechanism and the driving mechanism on the right side in Fig. 1;

Fig. 3 is the structural schematic diagram that the reaction force beam is provided with the groove-shaped cutout and the guide block for holding the bolt;

Fig. 4 is the structural representation that the servo motor and the worm gear reducer are arranged on the suspension of the lead screw elevator;

5 is a schematic structural diagram of the lifting screw nut arranged on the lifting nut bracket;

6 is a cross-sectional view of the lifting screw nut being arranged on the lifting nut bracket;

Fig. 7 is the structural schematic diagram of the holding mechanism and the driving mechanism after the upper half of the column is cut off;

FIG. 8 is a schematic structural diagram of the gripping mechanism and the driving mechanism presented after further omitting the reaction force beam in FIG. 7;

9 is a schematic structural diagram of a wedge-shaped hook;

10 is a schematic structural diagram of a wedge-shaped hook provided on a double-ended screw;

Figure 11 is a schematic structural diagram of the wedge-shaped hook claw supporting the guide rail bead;

FIG. 12 is a schematic structural diagram of a servo motor control system.

In the picture:

1. Test bench 2. Reaction beam 3. Upright column 4. Supporting parts 5. Clamping mechanism 6. Driving mechanism 7. Wedge-shaped hook support rail pressure strip 8. Double-ended screw 9. Wedge-shaped hook 10. First nut 11. Tighten bolt guide block 12. Second nut 13. Slot cut 14. Screw lift suspension 15. Servo motor 16. Turbine worm reducer 17. Lifting screw 18. Lifting screw nut 19. Lifting nut bracket 20 .Servo motor right angle planetary reducer 21. Rolling guide slider 22. Rolling guide strip 23. The first plane 24. The second plane 25. The first wedge surface 26. The second wedge surface 27. Servo motor control system

detailed description

In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

In this article, terms such as "up, down, left, right" are established based on the positional relationship shown in the drawings, and the corresponding positional relationship may also change according to different drawings. Therefore, it is not possible to use It is understood to be an absolute limitation on the scope of protection; moreover, relational terms such as "first" and "second" etc. are only used to distinguish one element of the same name from another, and do not necessarily require or Any such actual relationship or order between these components is implied.

Please refer to FIG. 1 and FIG. 2. FIG. 1 is an axonometric view of a device for gripping and lifting the reaction force beam of a test bench disclosed in an embodiment of the present invention; FIG. 2 is the gripping mechanism on the right side in FIG. 1. and the schematic diagram of the drive mechanism.

As shown in the figure, in an embodiment, the device for holding and lifting the reaction force beam of the test bench provided by the present invention is used to adjust and fix the height of the reaction force beam 2 of the test bench 1. The table 1 has four uprights 3, in order to ensure the stability of the structure, each upright 3 is respectively provided with an oblique supporting member 4, the upper end of the supporting member 4 is hinged with the support on the side of the upright column 3, and the lower end of the supporting member 4 is connected with the device. Hinged to the support on the ground.

The reaction force beam 2 is located on the outer side of the two uprights 3 on the near side of the figure, it is attached to the outer sides of the two uprights 3, and can move up and down along the outer side of the uprights 3 and be positioned. Both ends of the force beam 2 are respectively provided with a gripping mechanism 5 for fixing the reaction beam 2 on the column 3. In order to adjust the height of the reaction beam 2, the outer side of the column and the top surface of the two ends of the reaction beam 2 are respectively provided. There is a drive mechanism 6 for driving the reaction force beam 2 to rise or fall, a total of two sets of tightening mechanisms 5 and two sets of drive mechanisms 6, when the height of the reaction force beam 2 is adjusted, the two sets of drive mechanisms 6 are synchronized. During operation, when the reaction force beam 2 is fixed, the two sets of holding mechanisms 5 are locked at the same time.

Please refer to Figure 9, Figure 10, Figure 11, Figure 9 is a schematic structural diagram of the wedge-shaped hook; Figure 10 is a schematic structural diagram of the wedge-shaped hook disposed on the double-ended screw; Figure 11 is a structural schematic diagram of the wedge-shaped hook supporting the rail bead.

Each holding mechanism 5 is mainly composed of a wedge-shaped hook claw supporting guide rail bead 7 and a double-ended screw 8. One end of the double-ended screw 8 is provided with a wedge-shaped hook 9; the wedge-shaped hook support rail layer 7 is symmetrical in the vertical direction Fixed on the inner side of the column 3; the wedge-shaped hook 9 is provided with a through hole and is sleeved on one end of the double-ended screw 8 through the through hole. 7. The first nut 10 pressed against each other.

Please refer to FIG. 3 together. FIG. 3 is a schematic view of the structure of the reaction beam with groove-shaped cutouts and a guide block for tightening the bolts.

As shown in the figure, the number of double-ended screws 8 of each clamping mechanism 5 is four, of which two double-ended screws 8 are located on the right side of the column 3 and are arranged on the upper and lower surfaces of the reaction force beam 2, and the other two A double-ended screw 8 is located on the left side of the column 3 and is arranged on the upper surface and the lower surface of the reaction force beam 2 .

The top surface and the bottom surface of the reaction force beam 2 are provided with tightening bolt guide blocks 11 corresponding to each double-ended screw 8, and each double-ended screw 8 respectively passes through the through holes of the two tightening bolt guide blocks 11 arranged at intervals in the front and rear, The other end of the double-ended screw 8 is provided with a second nut 12 .

For the entire reaction beam 2, the tightening bolt guide blocks 11 are divided into two sets of the same left and right, and each set has eight, which are respectively welded on the upper and lower planes of the reaction beam 2 in a symmetrical state. The guide block 11 is provided with a through hole so as to pass through the double-ended screw 8 .

The side of the reaction beam 2 that is in contact with the upright column 3 is provided with a groove-shaped cutout 13 for assembling the drive mechanism. Small narrow grooves.

Please continue to refer to Figure 4, Figure 5, Figure 6, Figure 4 is a schematic structural diagram of the servo motor and the worm gear reducer arranged on the suspension of the screw lift; Figure 5 is a schematic structural diagram of the lifting screw nut arranged on the lifting nut bracket; FIG. 6 is a cross-sectional view of the lift screw nut disposed on the lift nut bracket.

As shown in the figure, the drive mechanism adopts a servo motor turbo reduction screw lift, which is mainly composed of a screw lift suspension 14, a servo motor 15, a worm gear reducer 16, a lifting screw 17, a lifting screw nut 18, and a lifting nut bracket. 19 and so on.

The lead screw elevator suspension 14 is fixed on the side of the column 3 that is in contact with the reaction force beam 2 and is located above the reaction force beam 2. The servo motor 15 and the worm gear reducer 16 are arranged on the lead screw elevator suspension 14. The upper end of 17 is connected with the worm gear reducer 16, the lower end of the lifting screw 17 is matched with the lifting screw nut 18, and the servo motor 15 is arranged vertically, which is transmitted through the servo motor right-angle planetary reducer 20 and the turbine worm reducer 16. connect.

The lifting nut bracket 19 is L-shaped, and it lifts the reaction force beam 2 upward through the horizontal horizontal plate. The lifting screw nut 18 is installed on the horizontal horizontal plate of the lifting nut bracket 19. The vertical vertical plate of the lift nut bracket 19 is located in the wide slot of the slot-shaped cutout 13 , and the lower end of the lift screw 17 passes through the narrow slot of the slot-shaped cutout 13 to fit with the lift screw nut 18 .

In order to improve the stability of the lifting and lowering of the reaction force beam 2, a guide pulley mechanism may be further provided. The guide pulley mechanism is mainly composed of a rolling guide block 21 and a rolling guide strip 22, wherein the rolling guide block 21 is fixed on the back of the vertical vertical plate of the lifting nut bracket 19 by bolts, and the rolling guide strip 22 is fixed on the column by bolts 3. On the side that is in contact with the reaction force beam 2, the rolling guide slider 21 and the rolling guide strip 22 slide up and down to guide the reaction force beam 2 to move up and down.

When working, the servo motor 15 drives the lifting screw 17 to rotate forward and reversely through the servo motor right-angle planetary reducer 20 and the worm gear reducer 16, and then drives the lifting nut bracket 19 through the cooperation of the lifting screw 17 and the lifting screw nut 18. The sliding rail block 21 and the rolling rail block 21 move up and down along the rolling rail bar 22, so that the reaction force beam 2 is lifted and lowered.

Please refer to FIG. 7 and FIG. 8 . FIG. 7 is a schematic structural diagram of the holding mechanism and the driving mechanism after the upper half of the column is cut off; and the schematic diagram of the drive mechanism.

As shown in the figure, through holes are formed on the wedge-shaped hook support rail pressure strip 7, and it is vertically installed on the side of the column 3 facing away from the reaction force beam 2 through bolts, and two wedge-shaped hook support rail pressure strips are symmetrically installed on each column 3. 7. The first plane 23 of the wedge-shaped hooks supporting the guide rail pressure strip 7 is in contact with the inner surface of the column 3, the second plane 24 of the wedge-shaped hooks supporting the guide rail pressure strip 7 is on the outside, the two ends of the double-ended screw 8 are tapped with threads, and the wedge-shaped hook The claw 9 is provided with a through hole, one end of each double-ended screw 8 passes through the through holes of the two tightening bolt guide blocks 11, and one end passes through a through hole of a wedge-shaped hook 9, and each column 3 passes through a set of wedge-shaped hooks The double-ended screw 8 is locked by the first nut 10 and the second nut 12, the reaction force beam 2 is fixed on the column 3, and the wedge-shaped claw support rail pressure strip 7 is provided with a first wedge surface 25, The wedge-shaped hook 9 is provided with a second wedge surface 26 that can fit and press against the first wedge surface 25. After being fixed, the wedge-shaped hook supports the guide rail pressure strip 7 and the wedge-shaped hook 9 through the first wedge surface 25 and the second wedge surface. 26 bite each other.

Please refer to FIG. 9 , which is a schematic structural diagram of an electric servo cylinder control system.

It further includes a servo motor control system 27, which is mainly composed of a PLC beam lifting control panel unit p, a PLC beam lifting control unit q, a power supply control and a regulated power supply unit r, a servo electric driver s, a main circuit reactor and a power filter t, The control system cabinet is composed of u and other components to control the operation of the servo motor 15, so that the lifting screw 17 rotates forward and reverse, thereby driving the reaction force beam 2 to move up and down to the designated position.

The above embodiments are only preferred solutions of the present invention, and are not specifically limited thereto. On this basis, targeted adjustments can be made according to actual needs, thereby obtaining different embodiments. For example, other rotatable power components are used to drive the elevating screw 17 to rotate in forward and reverse directions, or the double-ended screw 8 is mounted on the reaction beam 2 in other ways, and so on. Since there are many possible implementations, examples are omitted here.

The invention has a simple structure, is safe and reliable, and is easy to disassemble and assemble, which can provide great assistance for vehicle or bogie testing, can safely and effectively shorten the installation time, obtain more testing time for the test of the test piece, and significantly improve the test performance. effectiveness.

The device for holding and lifting the reaction force beam of the test bench provided by the present invention has been described in detail above. The principles and implementations of the present invention are described herein by using specific examples, and the descriptions of the above embodiments are only used to help understand the core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can also be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

A device for holding and lifting a reaction force beam of a test stand, comprising two upright columns (3) arranged at intervals and a reaction force beam (2) capable of moving up and down and positioned along the outer surface of the upright column (3), characterized in that The two ends of the reaction force beam (2) are respectively provided with a holding mechanism (5) for fixing the reaction force beam (2) on the upright column (3), the upright column (3) and the A drive mechanism (6) for driving the reaction force beam (2) to ascend or descend is provided between the reaction force beams (2), and the side of the reaction force beam (2) that is in contact with the upright column (3) A slotted cutout (13) is provided for assembling the drive mechanism (6).
The device for gripping and elevating the reaction force beam of a test stand according to claim 1, characterized in that each gripping mechanism (5) comprises a wedge-shaped hook claw supporting a guide rail pressure strip (7) and a wedge-shaped hook at one end. The double-ended screw (8) of the claw (9); the wedge-shaped hook claw supports the guide rail bead (7) in a left-right symmetrical manner and is vertically arranged on the column (3) facing away from the reaction force beam (2) The wedge-shaped hook (9) is provided with a through hole and is sleeved on one end of the double-ended screw (8) through the through hole, and one end of the double-ended screw (8) is provided with a The wedge-shaped hooks (9) and the wedge-shaped hooks support a first nut (10) that is pressed against each other by the guide rail bead (7) for fixing.
The device for holding and lifting the reaction force beam of a test stand according to claim 2, wherein each of the holding mechanisms (5) comprises four of the double-ended screws (8), two of which are The double-ended screw (8) is located on one side of the column (3) and is arranged on the upper surface and the lower surface of the reaction force beam (2), and the other two double-ended screws (8) are located on the column. The other side of (3) is juxtaposed on the upper and lower surfaces of the reaction force beam (2).
The device for holding and lifting the reaction force beam of a test bench according to claim 3, characterized in that, the top and bottom surfaces of the reaction force beam (2) are provided with corresponding double-ended screws (8). ) of the tightening bolt guide block (11), each of the double-ended screws (8) respectively passes through the two through holes of the tightening bolt guide blocks (11) arranged at intervals in the front and rear, and the double-ended screw (8) ) is provided with a second nut (12).
The device for holding and lifting the reaction force beam of a test stand according to claim 4, characterized in that, the wedge-shaped hook claw supports the guide rail bead (7) with a first wedge surface (25), and the wedge-shaped hook is provided with a first wedge surface (25). The claw (9) is provided with a second wedge surface (26) that can fit and press the first wedge surface (25), and the wedge-shaped hook support rail pressure strip (7) and the wedge-shaped hook (9) pass through. The first wedge surface (25) and the second wedge surface (26) are engaged with each other.
The device for holding and lifting the reaction force beam of the test bench according to claim 1, characterized in that the drive mechanism (6) is a servo motor turbine deceleration screw lift, including a screw lift suspension (14) , servo motor (15), worm gear reducer (16), lifting screw (17), lifting screw nut (18), lifting nut bracket (19); the screw lifter suspension (14) is fixed on the The side of the column (3) that is in contact with the reaction force beam (2) is located above the reaction force beam (2), and the servo motor (15) and the worm gear reducer (16) are arranged in The screw lifter suspension (14), the upper end of the lift screw (17) is connected with the worm gear reducer (16), and the lower end of the lift screw (17) is connected with the lift screw The nut (18) is matched; the lifting screw nut (18) is mounted on the lifting nut bracket (19), and the lifting nut bracket (19) lifts the reaction force beam (2) upward; The servo motor (15) drives the lift screw (17) to rotate in forward and reverse directions through the worm gear reducer (16), and then through the cooperation of the lift screw (17) and the lift screw nut (18) The lifting nut bracket (19) is driven to move up and down, so that the reaction force beam (2) is lifted and lowered.
The device for holding and lifting the reaction force beam of a test stand according to claim 6, characterized in that the lifting nut bracket (19) is L-shaped, which lifts the reaction force upward through a horizontal transverse plate A beam (2), the lifting screw nut (18) is mounted on the horizontal transverse plate of the lifting nut bracket (19); the projection of the groove-shaped cutout (13) is T-shaped, and the lifting nut bracket The vertical vertical plate of (19) is located in the wide slot of the slot-shaped cutout (13), and the lower end of the lift screw (17) passes through the narrow slot of the slot-shaped cutout (13) and the lift screw Nuts (18) are matched.
The device for gripping and elevating the reaction force beam of a test stand according to claim 7, further comprising a guide pulley mechanism; the guide pulley mechanism comprises a rolling guide block (21) and a rolling guide rail (22). ), the rolling guide slider (21) is fixed on the back of the vertical vertical plate of the lifting nut bracket (19) by bolts, and the rolling guide strip (22) is fixed on the column (3) and the vertical plate by bolts. On the side where the reaction force beam (2) is attached, the rolling guide slider (21) can slide up and down along the rolling guide rail (22) to guide the reaction force beam (2) to move up and down.
The device for holding and lifting the reaction force beam of a test stand according to claim 8, characterized in that the servo motor (15) is arranged vertically, and is connected with the servo motor right-angle planetary reducer (20) through the servo motor The worm gear reducer (16) is drive-connected.
The device for holding and lifting the reaction force beam of the test stand according to any one of claims 6 to 9, characterized in that it further comprises a servo motor control system to control the operation of the servo motor (15), so that the said The lifting screw (17) rotates forward and reverse, driving the reaction force beam (2) to move up and down to a designated position.