WO2022160854A1

WO2022160854A1 - Raising/lowering and positioning mechanism for reaction cross beam

Info

Publication number: WO2022160854A1
Application number: PCT/CN2021/129519
Authority: WO
Inventors: 刘洪涛; 谭富星; 杨姝; 郭雷
Original assignee: 中车长春轨道客车股份有限公司
Priority date: 2021-01-28
Filing date: 2021-11-09
Publication date: 2022-08-04
Also published as: CN112945588A; CN112945588B

Abstract

A raising/lowering and positioning mechanism for a reaction cross beam, comprising stand columns, and a reaction cross beam which can move up and down along the stand columns and is positioned. Holding mechanisms are provided at the two ends of the reaction cross beam, respectively, and a driving mechanism used for driving the reaction cross beam to ascend or descend is provided on the outer sides of the stand columns; the driving mechanism comprises suspension oil cylinders provided on the outer sides of the stand columns and a double-cylinder synchronous motor hydraulic station provided on the reaction cross beam, and the double-cylinder synchronous motor hydraulic station is communicated with the suspension oil cylinders in an oil path by means of an oil pipe; and the suspension oil cylinders are vertically arranged, cylinder blocks of the suspension oil cylinders pass through and are fixedly connected to the reaction cross beam, and the upper ends of piston rods of the suspension oil cylinders are connected to suspension supports on the outer side surfaces of the stand columns. This mechanism is simple in structure, is safe and reliable, is convenient to disassemble and assemble, can provide great assistance for a vehicle or bogie test, can safely and effectively shorten the mounting time, strives for more test time for a test of a test piece, and significantly improves the test efficiency.

Description

Reaction beam lifting and positioning mechanism

This application claims the priority of the invention patent application with the application number 202110121728.X and the invention name "reaction beam lifting and positioning mechanism" submitted to the China Patent Office on January 28, 2021, the entire contents of which are incorporated into this application by reference .

technical field

The invention relates to the technical field of rail vehicle testing devices, in particular to a mechanism for driving a test stand reaction cross beam to lift and position it in the design process of a rail vehicle.

Background technique

With the continuous development of the rail transit industry, vehicle design technology has been constantly innovating. During the design process of new models, the performance and reliability of vehicle design need to be continuously verified. Therefore, safe and reliable test equipment is particularly important. important.

Please refer to FIG. 1 , which is a schematic structural diagram of a typical reaction force beam lifting and positioning device.

As shown in the figure, a typical test bench 1 includes a reaction force beam 2. During the test, the height of the reaction force beam 2 needs to be adjusted and fixed, and the existing equipment has the following shortcomings:

On the one hand, it is necessary to use a crane to lift the reaction beam 2, and when the crane is working, not only the operation efficiency is low, but also there is a potential safety hazard.

On the other hand, the front and rear clamping pressure plates 3 are used to fix the reaction force beam 2, the front and rear clamping pressure plates 3 are heavy, and manual handling is very inconvenient, and there is a gantry frame above the clamping plate to prevent the crane from lifting, which is inconvenient for the reaction force. The beam 2 is disassembled.

Moreover, during the test, the reaction force beam 2 cannot be lifted up and down independently, and can only be lifted by means of a crane, which is very inconvenient to use.

In addition, since the crane is an extensive operation equipment, adjusting the installation height of the reaction beam 2 by 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 reaction force beam lifting and positioning mechanism. The mechanism is not only simple in structure, safe and reliable, but also highly versatile.

In order to achieve the above purpose, the present invention provides a reaction force beam lifting and positioning mechanism, which includes two upright columns arranged at intervals and a reaction force beam that can move up and down along the outer side of the upright column and be positioned. respectively provided with a holding mechanism for fixing the reaction force beam on the column, the outer side of the column is provided with a drive mechanism for driving the reaction force beam to rise or fall; the drive mechanism includes a set on the column. The outer suspension oil cylinder and the double-cylinder synchronous motor hydraulic station arranged on the reaction force beam, the double-cylinder synchronous motor hydraulic station is communicated with the suspension oil cylinder on the oil road through the oil pipe; the suspension oil cylinder is vertically The cylinder body passes through and is fixedly connected to the reaction force beam, and the upper end of the piston rod is connected to the suspension support on the outer side of the column.

Preferably, the reaction force beam is provided with a through hole for the cylinder body of the suspension oil cylinder to pass through, and the cylinder body of the suspension oil cylinder is provided with a flange at the middle or upper position, and the flange is fixed on the upper surface of the reaction beam.

Preferably, the piston rod of the suspension oil cylinder is connected with the suspension support through a connecting rod, one end of the connecting rod is hinged with the suspension support through a first pin, and the The other end is hinged with the piston rod of the suspending oil cylinder through a second pin shaft.

Preferably, the gripping mechanism includes "L"-shaped guide rails installed on the left and right sides of the upright column and a guide rail connecting seat installed on the reaction beam; each end of the reaction beam is provided with four said Guide rail connecting seats, wherein two of the guide rail connecting seats are located on the upper surface of the reaction force beam and are symmetrical about the column, and the other two guide rail connecting seats are located on the lower surface of the reaction force beam and are about the reaction force beam. The column is symmetrical on the left and right; each of the guide rail connecting bases is respectively provided with a reversed "L"-shaped guide rail pressing plate, and a connector.

Preferably, the "L"-shaped guide rail includes a first straight wall and a second straight wall, the first straight wall is fastened to the side surface of the upright column by means of bolts, and the second straight wall is perpendicular to the side of the upright column. Side; the "L"-shaped guide rail pressing plate includes a third straight wall and a fourth straight wall, the third straight wall is parallel to the first straight wall, and the fourth straight wall is parallel to the second straight wall And a space for clamping the second straight wall is formed between the guide rail connecting seat.

Preferably, the connecting piece includes bolts, and longitudinally arranged bolt holes are formed on the guide rail connecting seat and the fourth straight wall of the "L"-shaped guide rail pressing plate, and the bolts extend from the edge of the second straight wall to the fourth straight wall. The area between the third straight walls passes through.

Preferably, the guide rail connecting seat comprises a right-angled base plate and a rib plate arranged in a right-angled area of the right-angled base plate, the transverse plate of the right-angled base plate is fastened to the upper surface of the reaction force beam by bolts, and the A part of the upright plate of the right-angle base plate abuts against the outer side of the upright column, and another part of the upright plate of the right-angle base plate is close to the outer side of the second straight wall of the "L"-shaped guide rail.

Preferably, the double-cylinder synchronous motor hydraulic station is arranged at the central position of the upper surface of the reaction force beam.

Preferably, the double-cylinder synchronous motor hydraulic station includes an oil tank, an oil pump and an oil pump driving motor arranged on the top of the oil tank, an input oil pipe of the oil pump is connected with the oil tank, and an output oil pipe of the oil pump is connected to the electromagnetic switch. The oil inlet of the valve and the oil outlet of the electromagnetic reversing valve are connected to the hydraulically controlled check valve. The oil outlet of the hydraulically controlled check valve is divided into two paths, and the first path is reversed through the upper cavity. The oil pipe is connected to the synchronous motor in the upper chamber of the oil cylinder, and the second path is connected to the synchronous motor in the lower chamber of the oil cylinder through the lower chamber reversing oil pipe.

Preferably, an oil outlet of the hydraulically controlled check valve is provided with a bypass, and an overflow valve is provided on the bypass.

The reaction force beam lifting and positioning mechanism provided by the present invention has a wide range of use and strong versatility, is not only convenient, efficient, labor-saving, and has an accurate lifting position, but also has a simple structure, is easy to process and install, and has low manufacturing difficulty and cost. Safe and reliable, it can easily adapt the test bench to a single vehicle or a single bogie test, and can be used when adjusting the structure of the test bench quickly and safely. It can provide great assistance for vehicle or bogie testing, and can be safely and effectively shortened The installation time has won more test time for the test of the test piece and improved the efficiency of the test.

Description of drawings

1 is a schematic structural diagram of a typical reaction force beam lifting and positioning mechanism;

2 is an axonometric view of a reaction force beam lifting and positioning mechanism disclosed in an embodiment of the present invention when the reaction force beam is in a lowered state;

3 is an axonometric view of a reaction force beam lifting and positioning mechanism disclosed in an embodiment of the present invention when the reaction force beam is in a rising state;

Fig. 4 is a partial enlarged view of the reaction force beam lifting and positioning mechanism of the test stand shown in Fig. 2;

Fig. 5 is a partial enlarged view of Fig. 4;

Figure 6 is a schematic structural diagram of the connection between the suspension oil cylinder and the suspension support;

Fig. 7 is the structural representation of " L " shape guide rail;

Figure 8 is a schematic structural diagram of an "L"-shaped guide rail pressing plate;

FIG. 9 is a schematic structural diagram of a hydraulic station of a double-cylinder synchronous motor.

In the picture:

1. Test bench 2. Reaction beam 3. Front and rear clamping pressure plates 4. Upright column 5. Support parts 6 Clamping mechanism 61. "L" shaped guide rail 62. "L" shaped guide rail pressure plate 63. Guide rail connection seat 7. Drive mechanism 8. Suspension oil cylinder 81. Cylinder block 82. Piston rod 83. Flange 9. Double-cylinder synchronous motor hydraulic station 91. Oil tank 92. Oil pump 93. Oil pump drive motor 94. Electromagnetic reversing valve 95. Hydraulic control check valve 96 .Cylinder upper cavity synchronous motor 97.Cylinder lower cavity synchronous motor 98.Relief valve 10.Suspension support 11.Oil pipe 12.Connecting rod 13.First pin 14.Second pin

Detailed ways

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. 2 and FIG. 3. FIG. 2 is an axonometric view of a reaction force beam lifting and positioning mechanism disclosed in an embodiment of the present invention when the reaction force beam is in a lowered state; FIG. 3 is a reaction force beam lifting and positioning mechanism disclosed in an embodiment of the present invention. The axonometric view of the force beam lifting and positioning mechanism when the reaction force beam is in the rising state.

As shown in the figure, in an embodiment, the reaction force beam lifting and positioning mechanism of the test bench 1 provided by the present invention can adjust and fix the height of the reaction force beam 2. The test bench 1 has four uprights 4, In order to ensure the stability of the structure, each column 4 is respectively provided with an oblique support member 5, the upper end of the support member 5 is hinged with the support on the side of the column 4, and the lower end of the support member 5 is hinged with the support set on the ground.

The reaction force beam 2 is located on the outside of the two uprights 4 on the nearer side of the figure, it is attached to the outer sides of the two uprights 4, and can move up and down along the outer sides of the uprights 4 and be positioned. Both ends of the force beam 2 are respectively provided with a gripping mechanism 6 for fixing the reaction force beam 2 on the upright column 4. In order to adjust the height of the reaction force beam 2, the outer side of the column 3 is provided with a drive for driving the reaction force beam 2. Drive mechanism 7 for ascending or descending.

Specifically, the driving mechanism 7 is mainly composed of a suspension oil cylinder 8 arranged on the outer side of the column and a double-cylinder synchronous motor hydraulic station 9 arranged on the upper surface of the reaction force beam 2. The reaction force beam 2 is provided at the position where the suspension oil cylinder 8 is installed. There is a through hole, the suspension oil cylinder 8 is vertically arranged, the cylinder body 81 passes through and is fixedly connected to the reaction force beam 2, the upper end of the piston rod 82 is connected with the suspension support 10 on the outer side of the column 4, and the double cylinder is synchronized. The motor hydraulic station 9 communicates with the suspension oil cylinder 8 on the oil circuit through the oil pipe 11 .

When the double-cylinder synchronous motor hydraulic station 9 is running, the reaction force beam 2 moves up and down together with the double-cylinder synchronous motor hydraulic station 9 and the cylinder block 81 of the suspension cylinder 8, etc., and the position of the piston rod 82 of the suspension cylinder 8 moves up and down. is relatively fixed.

Please refer to Fig. 4, Fig. 5 and Fig. 6 together. Fig. 4 is a partial enlarged view of the reaction force beam lifting and positioning mechanism of the test bench shown in Fig. 2; Fig. 5 is a partial enlarged view of Fig. 4; Schematic diagram of the structure of the connection of the suspension supports.

As shown in the figure, the cylinder body 81 of the suspension oil cylinder 8 is provided with a flange 83 in the middle or upper position. After the cylinder body 81 passes through the reaction force beam 2, the flange 83 is fixed to the reaction force beam by bolts. 2 on the top surface.

The outer side of the column 4 is provided with a suspension support 10 located above the reaction force beam 2. The upper end of the suspension oil cylinder 8 is connected to the suspension support 10 through a connecting rod 12, and one end of the connecting rod 12 passes through the first pin 13. It is hinged with the suspension support 10, and the other end of the connecting rod 12 is hinged with the upper end of the piston rod 82 through the second pin 14. The first pin 13 and the second pin 14 are pins with handles, so as to for disassembly.

The suspension oil cylinder 8 is hingedly connected to the suspension support 10 through the connecting rod 12, so that even if the suspension oil cylinder 8 is offset, it can always be in a vertical state without tilting.

Please refer to FIG. 7 and FIG. 8 , FIG. 7 is a schematic structural diagram of an "L"-shaped guide rail; and FIG. 8 is a structural schematic diagram of an "L"-shaped guide rail pressing plate.

As shown in the figure, the holding mechanism 6 is mainly composed of "L"-shaped guide rail 61, "L"-shaped guide rail pressing plate 62, guide rail connecting seat 63 and several bolts and other components.

Each column 4 is provided with two "L"-shaped guide rails 61, the two "L"-shaped guide rails 61 are respectively installed on the left and right sides of the column 4 along the longitudinal direction, and the guide rail connecting seat 63 is installed on the reaction force beam 2. Each end of the force beam 2 is provided with four guide rail connection seats 63, two of which are located on the upper surface of the reaction force beam 2 and are symmetrical about the column 4, and the other two guide rail connection seats 63 are located on the reaction force beam 2. The lower surface is symmetrical about the column 4 left and right.

The guide rail connecting bases 63 are respectively provided with reversed "L" shaped guide rail pressing plates 62. The "L" shaped guide rail 61 has a first straight wall and a second straight wall. The first straight wall is fastened to the side of the column 4 by bolts. Two straight walls are perpendicular to the sides of the upright column 4; the "L"-shaped guide rail pressing plate 62 has a third straight wall and a fourth straight wall, the third straight wall is parallel to the first straight wall, the fourth straight wall is parallel to the second straight wall and A space for clamping the second straight wall is formed between the guide rail connecting seat 63 .

The guide rail connecting seat 63 includes a right-angle base plate and a rib plate arranged in the right-angle area of the right-angle base plate. 4, the other part of the vertical plate of the right-angled base plate is close to the outer side of the second straight wall of the “L”-shaped guide rail 61.

The guide rail connecting seat 63 and the fourth straight wall of the "L"-shaped guide rail pressing plate 62 are provided with longitudinally arranged bolt holes, and the bolts pass through the area between the edge of the second straight wall and the third straight wall. The "L"-shaped guide rail pressing plate 62 presses the "L"-shaped guide rail 61 in the front-rear direction, so as to hold the reaction force beam 2 tightly on the outer side of the column 4 .

Please refer to FIG. 9 . FIG. 9 is a schematic structural diagram of a dual-cylinder synchronous motor hydraulic station.

As shown in the figure, the double-cylinder synchronous motor hydraulic station 9 is generally located in the center of the upper surface of the reaction force beam, which is mainly composed of an oil tank 91, an oil pump 92, an oil pump driving motor 93, an electromagnetic reversing valve 94, and a hydraulic control one-way valve 95. , Hydraulic components such as upper cylinder synchronous motor 96, lower cylinder synchronous motor 97 and relief valve 98.

Among them, the oil pump 92 and the oil pump driving motor 93 and other components are installed on the top of the oil tank 91, the input oil pipe of the oil pump 92 is connected with the oil tank 91, and the output oil pipe of the oil pump 92 is connected with the oil inlet of the electromagnetic reversing valve 94. The electromagnetic reversing valve The oil outlet of 94 is connected to the hydraulic control check valve 95. The oil outlet of the hydraulic control check valve 95 is provided with a bypass, and an overflow valve 98 is provided on the bypass. The oil outlet of the hydraulic control check valve 95 The oil circuit is divided into two circuits. The first circuit is connected to the synchronous motor 96 in the upper chamber of the cylinder through the reversing oil pipe in the upper chamber, and the second circuit is connected to the synchronous motor 97 in the lower chamber of the cylinder through the reversing oil pipe in the lower chamber. The synchronous motors 97 in the lower chamber of the oil cylinder are respectively connected to the suspension oil cylinder 8 through oil pipes to control the cylinder block 81 of the suspension oil cylinder 8 to rise or fall synchronously, thereby driving the reaction force beam 2 to move.

During operation, the synchronous motor 96 in the upper chamber of the cylinder of the double-cylinder synchronous motor hydraulic station 9 injects hydraulic oil into the upper oil chamber of the suspension cylinder 8. Since the piston rod 82 of the suspension cylinder 8 is relatively fixed, under the pressure of the hydraulic oil , the cylinder body 81 of the suspension oil cylinder 8 will move upward, thereby driving the reaction force beam 2 to rise. , Since the piston rod 82 of the suspension oil cylinder 8 is relatively fixed, under the action of the hydraulic oil, the cylinder body 81 of the suspension oil cylinder 8 will move downward, thereby driving the reaction force beam 2 to descend.

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, the cylinder block 81 of the suspending oil cylinder 8 is fixed on the reaction force beam 2 by other structures, or the reaction force beam 2 is held tightly on the upright column 4 by other means, 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. efficiency.

The lifting and positioning mechanism of the reaction force beam 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 reaction force beam lifting and positioning mechanism, comprising two upright columns (4) 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 (4), characterized in that the reaction force beam Both ends of (2) are respectively provided with a gripping mechanism (6) for fixing the reaction force beam (2) on the column (4), and the outer side of the column (4) is provided with a mechanism for driving the reaction force A drive mechanism (7) for raising or lowering the beam (2); the drive mechanism (7) comprises a suspension oil cylinder (8) arranged on the outer side of the column (3) and a hydraulic cylinder (8) arranged on the reaction force beam (2). A double-cylinder synchronous motor hydraulic station (9), the double-cylinder synchronous motor hydraulic station (9) is communicated with the suspension oil cylinder (8) on the oil road through an oil pipe (11); the suspension oil cylinder (8) is vertically The cylinder body (81) passes through and is fixedly connected to the reaction force beam (2), and the upper end of the piston rod (82) is in contact with the suspension support (10) on the outer side of the column (4). connect.
The reaction force beam lifting and positioning mechanism according to claim 1, wherein the reaction force beam (2) is provided with a through hole through which the cylinder body (81) of the suspension oil cylinder (8) passes, so The cylinder body (81) of the suspension oil cylinder (8) is provided with a flange (83) in the middle or an upper position, and the flange (83) is fixed on the upper surface of the reaction force beam (2).
The reaction force beam lifting and positioning mechanism according to claim 1, wherein the upper end of the piston rod (82) of the suspension oil cylinder (8) is connected to the suspension support (10) through a connecting rod (12). connected, one end of the connecting rod (12) is hinged with the suspension support (10) through a first pin shaft (13), and the other end of the connecting rod (12) is connected with a second pin shaft (14) It is hinged with the piston rod (82) of the suspension oil cylinder (8).
The lifting and positioning mechanism of the reaction force beam according to claim 1, characterized in that the gripping mechanism (6) comprises "L"-shaped guide rails (61) installed on the left and right sides of the upright column (4) and a guide rail (61) installed on the A guide rail connecting seat (63) of the reaction force beam (2); each end of the reaction force beam (2) is provided with four guide rail connecting seats (63), two of which are the guide rail connecting seats (63) ) is located on the upper surface of the reaction force beam (2) and is symmetrical about the column (4), and the other two guide rail connecting seats (63) are located on the lower surface of the reaction force beam (2) and are about the The upright column (4) is symmetrical from left to right; each of the guide rail connecting bases (63) is respectively provided with a reversed "L"-shaped guide rail pressing plate (62), and a Press the connecting piece of the "L"-shaped guide rail (61) in the front-rear direction.
The reaction force beam lifting and positioning mechanism according to claim 4, wherein the "L"-shaped guide rail (61) comprises a first straight wall and a second straight wall, and the first straight wall is fixedly connected to the On the side surface of the upright column (4), the second straight wall is perpendicular to the side surface of the upright column (4); the "L"-shaped guide rail pressing plate (62) includes a third straight wall and a fourth straight wall, the The third straight wall is parallel to the first straight wall, the fourth straight wall is parallel to the second straight wall and forms a space for clamping the second straight wall with the guide rail connecting seat (63) .
The lifting and positioning mechanism of the reaction force beam according to claim 5, characterized in that the connecting piece comprises a bolt, and the guide rail connecting seat (63) and the fourth straight wall of the "L"-shaped guide rail pressing plate (62) are provided with openings. There are longitudinally aligned bolt holes, the bolts passing through the area between the edge of the second straight wall and the third straight wall.
The lifting and positioning mechanism of the reaction force beam according to claim 6, characterized in that, the guide rail connecting seat (63) comprises a right-angled base plate and a rib plate arranged in a right-angled area of the right-angled base plate, and the right-angled base plate has a The horizontal plate is fastened to the upper surface of the reaction force beam (2) by means of bolts, a part of the vertical plate of the right-angle base plate is in close contact with the outer side surface of the upright column (4), and the vertical plate of the right-angle base plate The other part is in close contact with the outer side of the second straight wall of the "L"-shaped guide rail (61).
The lifting and positioning mechanism of the reaction force beam (2) according to claim 1, characterized in that, the double-cylinder synchronous motor hydraulic station (9) is arranged at the central position of the upper surface of the reaction force beam (2).
The reaction force beam lifting and positioning mechanism according to claim 8, characterized in that, the double-cylinder synchronous motor hydraulic station (9) comprises an oil tank (91) and an oil pump (92) provided on the top of the oil tank (91) and a The oil pump drives the motor (93), the input oil pipe of the oil pump (92) is communicated with the oil tank (91), and the output oil pipe of the oil pump (92) is communicated with the oil inlet of the electromagnetic reversing valve (94), so The oil outlet of the electromagnetic reversing valve (94) is connected to the hydraulic control check valve (95), and the oil outlet oil path of the hydraulic control check valve (95) is divided into two paths, and the first path is replaced by the upper cavity. The oil pipe is connected to the synchronous motor (96) in the upper cavity of the oil cylinder, and the second path is connected to the synchronous motor (97) in the lower cavity of the oil cylinder through the lower cavity reversing oil pipe. The synchronous motor (96) in the upper cavity of the oil cylinder and the synchronous motor ( 97) are respectively connected to the suspension oil cylinders (8) through oil pipes.
The reaction force beam lifting and positioning mechanism according to claim 9, characterized in that, a bypass is provided in the oil outlet of the hydraulically controlled check valve (95), and an overflow valve (95) is provided on the bypass. 98).