WO2022061860A1

WO2022061860A1 - Test stand counterforce cross beam clasping and lifting device

Info

Publication number: WO2022061860A1
Application number: PCT/CN2020/118300
Authority: WO
Inventors: 谭富星; 刘洪涛; 张鹏; 刘诗慧
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: CN112129558A; CN112129558B

Abstract

A test stand counterforce cross beam clasping and lifting device, comprising two stand columns (3) arranged in a spaced manner, and a counterforce cross beam (2) that can move up and down along outer side faces of the stand columns (3) and can be positioned. Clasping mechanisms (5) for fixing the counterforce cross beam (2) to the stand columns (3) are respectively arranged at two ends of the counterforce cross beam (2), and driving mechanisms (6) for driving the counterforce cross beam (2) to ascend or descend are arranged between the outer side faces of the stand columns (3) and top faces of the two ends of the counterforce cross beam (2). The device is simple in terms of structure, is safe and reliable and is convenient to disassemble and assemble, can provide great assistance for a vehicle or bogie test, can safely and effectively shorten the installation time, strives for more testing time for a test of a piece under testing, and significantly improves the testing efficiency.

Description

A test bench reaction force beam holding and lifting device

This application claims the priority of the invention patent application filed with the China Patent Office on September 23, 2020, the application number is 202011010288.2, and the invention name is "a test bench reaction force beam holding and lifting device", the entire content of which is incorporated by reference in 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, using the crane 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 test-bed reaction force beam holding and lifting device with simple structure, safety, reliability and high versatility.

In order to achieve the above purpose, the present invention provides a test stand reaction force beam holding and lifting device, which includes two spaced columns and a reaction force beam that can move up and down along the outer side of the column and be positioned. The two ends are respectively provided with a gripping mechanism for fixing the reaction beam on the column, and between the outer side of the column and the top surfaces at both ends of the reaction beam are provided for driving the reaction beam to rise or descending drive mechanism.

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 inner side of 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 support for the wedge-shaped hook and the wedge-shaped hook. The first nut that the guide rail pressure strips press against each other.

Preferably, each of the tightening mechanisms includes four double-ended screws, two of which are arranged on the top surface of the reaction force beam and on the left and right sides of the upright column, and the other two The double-ended screw is arranged on the bottom surface of the reaction force beam and on the left and right sides of the upright column.

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 driving mechanism includes a power component and a power component support seat, the power component is mounted on the outer side surface of the column through the power component support seat; the power component has a telescopic component that can move up and down, and passes through the The telescopic part is connected with the top surface of the reaction force beam.

Preferably, the power component includes an electric servo cylinder motor, a foldable electric servo cylinder body and a ball screw type electric servo cylinder piston rod, and the ball screw type electric servo cylinder piston rod is matched with the folded type electric servo cylinder body, It can move up and down in the folding electric servo cylinder, and its lower end is connected with the top surface of the reaction force beam.

Preferably, the power component support base is an electric servo cylinder support base, the electric servo cylinder support base is welded on the column, and the electric servo cylinder motor and the fold-back electric servo cylinder block are connected to the hinge shaft through the electric servo cylinder. The electric servo cylinder support base is connected.

Preferably, the top surface of the reaction force beam is provided with an electric servo cylinder ball joint plate, and the end joint bearing and the bearing seat of the piston rod of the ball screw type electric servo cylinder are connected to the electric servo cylinder ball joint through bolts. The connecting plate is connected and fixed.

Preferably, an electric servo cylinder control system is further included to control the piston rod of the ball screw type electric servo cylinder to move up and down along the foldable electric servo cylinder body, and to drive the reaction force beam to move up and down to a designated position.

The reaction force beam holding and lifting device of the test bench provided by the present invention is mainly used to facilitate the test bench to adapt to a single-section vehicle or a single bogie test, and to adjust the structure of the test bench quickly and safely, and is used for guiding vehicles or steering. The rack can 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, improve the test efficiency, and , It can be applied to the transition guidance of rail vehicles or bogies of different gauges. It has a wide range of use and strong versatility. It is not only convenient, efficient, labor-saving, and accurate in lifting position, but also has a simple structure and is easy to process and install. Manufacturing difficulty and cost Low, the structural strength is safe and reliable.

Description of drawings

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

Fig. 2 is the structural representation of the reaction force beam, the holding mechanism and the driving mechanism shown in Fig. 1;

Fig. 3 is the structural representation of reaction force beam;

Fig. 4 is the structural representation of the gripping mechanism and the driving mechanism on the right side in Fig. 1;

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

FIG. 6 is a schematic structural diagram of a wedge-shaped claw supporting a guide rail bead;

FIG. 7 is a schematic structural diagram of the wedge-shaped hook claw supporting rail bead installed on the upright column;

8 is a schematic structural diagram of the engagement between the wedge-shaped hook and the wedge-shaped hook support rail pressure strip;

FIG. 9 is a schematic structural diagram of an electric servo cylinder 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. Electric servo cylinder ball hinge connecting plate 14. Electric servo cylinder support seat 15. Electric servo cylinder connecting hinge shaft 16. Electric servo cylinder motor 17. Fold-back electric servo cylinder block 18. Ball screw type electric servo cylinder piston rod 19. Piston rod end joint bearing and bearing seat 20. The first plane 21. The second plane 22. The first wedge surface 23. The second wedge surface 24. Electric servo cylinder 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 reaction force beam holding and lifting device disclosed in an embodiment of the present invention; FIG. 2 is a reaction force beam, a holding mechanism and a drive shown in FIG. 1 Schematic diagram of the structure of the organization.

As shown in the figure, in one embodiment, the test bench reaction beam holding and lifting device 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 test bench 1 has four Root column 3, in order to ensure the stability of the structure, each column 3 is respectively provided with an oblique support member 4, the upper end of the support member 4 is hinged with the support on the side of the column 3, and the lower end of the support member 4 is connected with the support located on the ground. Seat hinged.

The reaction force beam 2 is located on the outer side of the two uprights 3 on the nearer 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 gripping mechanisms 5 and two sets of drive mechanisms 6, when working, the two sets of drive mechanisms 6 run synchronously.

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 and FIG. 4 together. FIG. 3 is a schematic structural diagram of a reaction force beam; FIG. 4 is a structural schematic diagram of the holding mechanism and the driving mechanism on the right side in FIG. 1 .

As shown in the figure, the number of double-ended screws 8 of each tightening mechanism 5 is four, of which two double-ended screws 8 are arranged on the top surface of the reaction force beam 2 and are located on the left and right sides of the upright column 3, and the other two double-ended screws 8 The head screw 8 is arranged on the bottom surface of the reaction force beam 2 and on the left and right sides of the upright column 3 .

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, and the electric servo cylinder ball hinge connecting plate 13 is generally square, and is symmetrically welded on the upper plane of the reaction force beam 2 .

The drive mechanism 6 is mainly composed of the electric servo cylinder support seat 14, the electric servo cylinder connecting hinge shaft 15, the electric servo cylinder motor 16, the foldable electric servo cylinder block 17, the ball screw type electric servo cylinder piston rod 18, and the piston rod end joint bearing. It is composed of a bearing seat 19, wherein the electric servo cylinder support seat 14 is welded on the outer surface of the column 3, and the electric servo cylinder motor 16 and the foldable electric servo cylinder block 17 are connected by the electric servo cylinder to the hinge shaft 15 and the electric servo cylinder support 14. The seat is connected, the ball screw type electric servo cylinder piston rod 18 is matched with the foldable electric servo cylinder block 17, and can move up and down along the foldable electric servo cylinder block 17. The piston rod end joint bearing and the bearing seat 19 are connected to the electric servo cylinder through bolts. The ball hinge connecting plate 13 is connected and fixed.

Please refer to FIGS. 5 to 8. FIG. 5 is a schematic structural diagram of a wedge-shaped hook; FIG. 6 is a schematic structural diagram of a wedge-shaped hook supporting the guide rail bead; Schematic diagram of the structure of the engagement between the wedge-shaped hook and the wedge-shaped hook support rail pressure strip.

As shown in the figure, there are through holes on the wedge-shaped hook support rail pressure strip 7, and it is vertically installed on the inner surface of the column 3 through bolts. The first plane 20 of the claw support rail pressure strip 7 is in contact with the inner surface of the column 3, the second plane 21 of the wedge-shaped hook support 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 claw 9 has Through holes, one end of each double-ended screw 8 passes through the through holes of two clamping bolt guide blocks 11, and one end passes through a through hole of a wedge-shaped hook 9, and a set of wedge-shaped hook type clamping mechanism is passed on each column 3 Fixing, that is, 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, the wedge-shaped hook support rail pressure strip 7 is provided with the first wedge surface 22, the wedge-shaped hook 9 There is a second wedge surface 23 that can be attached to and pressed against the first wedge surface 22 . After being fixed, the wedge-shaped hook support rail pressure strip 7 and the wedge-shaped hook 9 are engaged with each other through the first wedge surface 22 and the second wedge surface 23 .

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

It further includes an electric servo cylinder control system 24, which is mainly composed of a PLC beam lifting control panel unit n, a PLC beam lifting control unit o, a power supply control and voltage-stabilizing power supply unit p, an electric servo cylinder driver q, an electric servo cylinder power isolation transformer r, The electric servo cylinder control system is composed of cabinet s to control the ball screw type electric servo cylinder piston rod 18 to move up and down along the folded type electric servo cylinder block 17 to drive 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 power components capable of telescopic action are used to drive the reaction force beam 2 to move up and down, or the double-ended screw 8 is installed on the reaction force 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 above is a detailed introduction to the test bench reaction force beam holding and lifting device provided by the present invention. 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 test stand reaction force beam holding and lifting device, comprising two upright columns (3) arranged at intervals and a reaction force beam (2) capable of moving up and down and positioning along the outer side of the upright column (3), characterized in that, Both 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), and the outer side of the upright column (3) is connected to the A drive mechanism (6) for driving the reaction force beam (2) to ascend or descend is provided between the top surfaces of the two ends (2) of the reaction force beam.
The test bench reaction force beam clamping lifting device according to claim 1, characterized in that each clamping mechanism (5) comprises a wedge-shaped hook support rail pressure strip (7) and a wedge-shaped hook (9) at one end. the double-ended screw (8); the wedge-shaped claws (9) are provided on the inner side of the upright column (3) in a left-right symmetrical manner along the vertical direction; the wedge-shaped claws (9) are provided with A through hole 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 bead for supporting the guide rail with the wedge-shaped hook (9) and the wedge-shaped hook. (7) The first nuts (10) pressed against each other.
The test-bed reaction force beam clamping lifting device according to claim 2, wherein each clamping mechanism (5) comprises four double-ended screws (8), two of which are double-ended screws (8) are arranged on the top surface of the reaction force beam (2) and located on the left and right sides of the upright column (3), and the other two double-ended screws (8) are arranged on the reaction force beam (2) The bottom surface is located on the left and right sides of the upright column (3).
The test bench reaction force beam clamping lifting device according to claim 3, characterized in that, the top and bottom surfaces of the reaction force beam (2) are provided with clamping corresponding to each of the double-ended screws (8). Bolt guide blocks (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 other end of the double-ended screws (8) A second nut (12) is provided.
The test bench reaction force beam holding and lifting device according to claim 4, characterized in that, the wedge-shaped hook support rail pressure strip (7) is provided with a first wedge surface (22), and the wedge-shaped hook (9) There is a second wedge surface (23) that can be attached to and pressed against the first wedge surface (22), and the wedge-shaped hook supports the rail pressure strip (7) and the wedge-shaped hook (9) through the first wedge The surface (22) and the second wedge surface (23) are engaged with each other.
The test bench reaction force beam holding and lifting device according to claim 1, characterized in that, the driving mechanism (6) comprises a power component and a power component support seat, and the power component is mounted on the power component support seat through the power component support seat. The outer surface of the column (3); the power component has a telescopic component that can move up and down, and is connected to the top surface of the reaction force beam (2) through the telescopic component.
The test bench reaction force beam holding and lifting device according to claim 6, characterized in that the power components include an electric servo cylinder motor (16), a fold-back electric servo cylinder (17) and a ball screw type electric servo A cylinder piston rod (18), the ball screw type electric servo cylinder piston rod (18) is matched with a foldable electric servo cylinder (17), and can move up and down in the folded electric servo cylinder (17), Its lower end is connected with the top surface of the reaction force beam (2).
The test bench reaction force beam holding and lifting device according to claim 7, characterized in that the power component support base is an electric servo cylinder support base (14), and the electric servo cylinder support base (14) is welded on the upright column. (3) On, the electric servo cylinder motor (16) and the foldable electric servo cylinder block (17) are connected to the electric servo cylinder support seat (14) through the electric servo cylinder coupling hinge shaft (15).
The reaction force beam holding and lifting device of the test bench according to claim 8, wherein the top surface of the reaction force beam (2) is provided with an electric servo cylinder ball hinge connecting plate (13), and the ball screw The end joint bearing of the piston rod (18) of the electric servo cylinder and the bearing seat (19) are connected and fixed with the ball hinge connecting plate (13) of the electric servo cylinder through bolts.
The test stand reaction force crossbeam clinging lifting device according to any one of claims 7 to 9, characterized in that it further comprises an electric servo cylinder control system (24) to control the ball screw type electric servo cylinder piston The rod (18) moves up and down along the foldable electric servo cylinder (17), and drives the reaction force beam (2) to move up and down to a designated position.