CN110793791A - Driver's cab side collision-resistant test device - Google Patents
Driver's cab side collision-resistant test device Download PDFInfo
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- CN110793791A CN110793791A CN201911133748.8A CN201911133748A CN110793791A CN 110793791 A CN110793791 A CN 110793791A CN 201911133748 A CN201911133748 A CN 201911133748A CN 110793791 A CN110793791 A CN 110793791A
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- cab
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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Abstract
A cab side collision-resistant test device comprises a loading device and a supporting and reversing device, and is structurally characterized by further comprising a transverse connecting rod; the loading device is located outside the side wall on one side of the cab, the reaction device is located outside the side wall on the other side of the cab, the transverse connecting rod has one or more than one, and the transverse connecting rod passes through the space above the top of the cab, the cab door, the cab window and/or the space below the bottom of the cab to connect the loading device and the reaction device. A loading device and a supporting and reaction device are respectively designed on two sides of a side wall of a cab of a locomotive/power vehicle, the loading device and the supporting and reaction device are connected by one or more transverse connecting rods through a space above the top of the cab, a cab door, a cab window and/or a space below the bottom of the cab, so that internal forces of a loading acting force and a supporting and reaction force are mutually offset in a testing device, the loading acting force and the supporting and reaction force are not transmitted to a test bed and a ground foundation, and the safety of the test is ensured.
Description
Technical Field
The invention relates to the technical field of rail transit vehicle body static strength test devices, in particular to a cab side surface collision resistance test device.
Background
With the continuous improvement of the running speed of the locomotive/power vehicle, in order to protect the safety of crew members, the general company of China railway specially issues TJ/JW102-2017 temporary technical Specification for anticollision of the cab of the alternating current transmission locomotive, and provides higher standards and requirements for the structural strength, collision energy absorption requirements and the like of the cab of the alternating current transmission locomotive (including the power concentrated motor train unit), wherein the requirements comprise the requirements of a collision-resistant test on the side surface of the cab of the alternating current transmission locomotive (hereinafter referred to as the locomotive) with the rail gauge of 1435mm and the power concentrated motor train unit (hereinafter referred to as the power train unit), namely the requirement that the side wall anticollision structure can bear 300kN load.
The existing locomotive/power vehicle body static strength test bed structure built in China mainly comprises a ground foundation bearing structure and an upper ground ring beam type bearing structure, wherein a loading device and a supporting and reversing device are combined into a ring beam by the upper ground ring beam type bearing structure, the two structures have the main functions of meeting the longitudinal loading capacity, and the design of a main structure does not consider the simulation of side wall anti-collision loading, namely the transverse loading capacity, so that the ground or the main structure needs to be constructed and transformed so as to expand the test bed to realize the simulation of the transverse loading capacity.
The design of the test bed for simulating the transverse loading capacity has the following design difficulties:
1) if the construction transformation is carried out on the ground or a main structure, the engineering quantity is large, and the construction is difficult.
2) In order to obtain good aerodynamic performance and beautiful appearance, the locomotive/power vehicle cab structure is increasingly adopting a complex streamline appearance design, so that a collision-resistant test loading area of the cab side wall is often a curved surface or an irregular plane, and meanwhile, the sizes and the structures of various locomotive/power vehicle structures are greatly different, so that the universality of a collision-resistant test device is difficult to realize.
3) The collision-resistant area of the side wall of the cab of a part of the locomotive/power vehicle reaches 3-4 meters along the longitudinal length, and the approximately uniform loading is difficult to achieve.
4) Since the application of a 300kN load to the cab-side wall is not a conventional load, this load only occurs in special cases, and there is no counter-structure on the body specifically to carry this load. The transverse force and the bending moment force received by the vehicle body cannot be effectively eliminated only by the vehicle body secondary support position and the cab longitudinal stretching and compressing device, and how to reasonably arrange the reverse end, the safety of the test is ensured, and important research is needed.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a cab side surface collision-resistant test device which is used for forming internal force by loading force and support reaction force to be consumed in the test device through reasonably designing the support reaction end on the basis of not constructing a test bed foundation and reforming a main structure of the test bed, can realize uniform loading and has good universality.
In order to achieve the purpose, the invention adopts the technical scheme that:
a cab side collision-resistant test device comprises a loading device and a supporting and reversing device, and is structurally characterized by further comprising a transverse connecting rod; the loading device is located outside the side wall on one side of the cab, the reaction device is located outside the side wall on the other side of the cab, the transverse connecting rod has one or more than one, and the transverse connecting rod passes through the space above the top of the cab, the cab door, the cab window and/or the space below the bottom of the cab to connect the loading device and the reaction device.
The loading device and the reaction device are connected by one or more transverse connecting rods through the space above the top of the cab, the cab door, the cab window and/or the space below the bottom of the cab, so that the loading acting force and the reaction force form internal force which is counteracted with each other in the test device and is not transmitted to the test bed and the ground foundation. And the reverse end is reasonably arranged, so that the safety of the test is ensured.
Further, the loading device and/or the counter-supporting device are/is a frame structure built by two upright posts and a longitudinal connecting rod, and the bottoms of the two upright posts are fixed on the ground. Therefore, the foundation of the test bed is not required to be constructed, and the engineering quantity is small.
Furthermore, the loading device comprises a loading hydraulic cylinder device and a force transmission device, the force transmission device is attached to a collision-resistant area on one side of the cab and is suspended on the upper transverse connecting rod through a fixing belt, one end of the loading hydraulic cylinder device is fixed on the upright post of the loading device, and the other end of the loading hydraulic cylinder device is connected with the force transmission device.
The loading hydraulic cylinder device comprises a hydraulic cylinder, a load sensor and an installation accessory, the hydraulic cylinder is connected with the load sensor through the installation accessory, and a piston rod in the hydraulic cylinder can be adjusted to stretch out and draw back. And a loading force is applied to the force transmission device in a double-hydraulic-cylinder loading mode.
Furthermore, the supporting and reversing device comprises an adjustable support and a force transmission device, the force transmission device is attached to a collision-resistant area on the other side of the cab and is suspended on the transverse connecting rod above the force transmission device through a fixing belt, one end of the adjustable support is fixedly connected to the upright post of the supporting and reversing device, and the other end of the adjustable support is connected with the force transmission device.
The adjustable support comprises a sleeve, a right-handed threaded rod and a left-handed threaded rod, and the sleeve can rotate to achieve length adjustment through the right-handed threaded rod and/or the left-handed threaded rod. The adjustable support applies pre-pressure to the force transmission device, so that a gap between the vehicle body and the support and reaction device is avoided, and the vehicle body is prevented from moving.
Furthermore, the force transmission device is a loading beam structure consisting of a pipe, a wood mold and a rubber pad, the pipe is bound and connected with the wood mold, and the rubber pad is arranged on the surface, which is attached to the collision-resistant area, of the wood mold. The wooden model is preprocessed according to a drawing, the pipe and the wooden model are bound together through the steel wire rope, the pipe can prevent the wooden model from deforming under stress, a small gap between part of the curved surface of the vehicle body and the wooden model is made up through arranging the rubber cushion on the surface of the wooden model, and due to the design of different curved surfaces of the vehicle body, the wooden model is repaired or the gap is made up through the rubber cushion if the gap is large. Therefore, the device can be well attached to a collision-resistant area of the side wall of the cab, and loading force is uniformly distributed to the collision-resistant area of the cab through the force transmission device.
Further, the longitudinal connecting rods may be lengthened or replaced. When the length difference of the collision-resistant area of part of the side wall of the locomotive/power vehicle is large, the length difference can be adjusted by increasing or replacing the longitudinal connecting rod in the testing device, and the universality is good.
The vertical column is provided with a plurality of U-shaped mounting grooves, and the transverse connecting rods are vertically arranged along the U-shaped mounting grooves and can adapt to different cab design structures.
Compared with the prior art, the invention has the beneficial effects that:
1) the side wall collision-resistant area on one side of the locomotive/power vehicle cab is selected as a loading end, the side wall collision-resistant area on the other side of the locomotive/power vehicle cab is selected as a branch reverse end, and the branch reverse end is reasonably arranged to ensure the safety of the test.
2) On the basis that the test bed foundation is not constructed and the main structure of the test bed is transformed, a set of loading device is designed, so that the loading force of the side wall of the cab becomes the internal structural force of the loading device, and is offset in the loading device, and is not transmitted to the test bed and the ground foundation.
3) The loading beam is constructed by adopting a mode of a pipe, a wood mold and a rubber pad, and is attached to a collision-resistant area of the side wall of the cab in a mode of preprocessing in the early stage and repairing the mold in the later stage, and the loading tool is suitable for being well attached to the collision-resistant area of the side wall of the cab and uniformly transmitting loading force.
4) The transverse connecting rods can be adjusted approximately in a stepless mode along the vertical direction by arranging the U-shaped mounting grooves on the device stand columns, and when the length deviation of the collision-resistant area of the side wall of a part of locomotive/power vehicle is large, the longitudinal connecting rods in the device can be increased or replaced to adjust. The side wall collision-resistant loading test device can adapt to different locomotive/power vehicle cab side wall collision-resistant loading test working conditions through adjustment of part of components, and the test device has universality.
Drawings
FIG. 1 is a front view of the installation schematic of the present invention;
FIG. 2 is a side view of the installation of the present invention;
fig. 3 is a top view of the installation schematic of the present invention.
In the figure
1-a transverse connecting rod; 2-upright post; 3-longitudinal connecting rods; 4-loading the hydraulic cylinder device; 5-a force transfer device; 6-adjustable support;
51-a pipe; 52-wood pattern; 53-rubber pad.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.
A side collision-resistant test device of a cab is shown in figure 1 and comprises a loading device and a supporting and reversing device, and is structurally characterized by further comprising a transverse connecting rod 1; the loading device is located outside the side wall (left side in the figure) of cab one side, the anti-device is located outside the side wall (right side in the figure) of cab opposite side, horizontal connecting rod 1 has many to pass the space below cab door, cab window and the cab bottom will loading device and anti-device are connected.
With reference to fig. 2, the loading device and/or the reaction device is a frame structure constructed by two upright posts 2 and a longitudinal connecting rod 3, and the bottoms of the two upright posts 2 are fixed on the ground through connecting pieces. Therefore, the foundation of the test bed is not required to be constructed, and the engineering quantity is small. Be provided with a plurality of U type mounting grooves on the stand, transverse connection rod passes through U type mounting groove sets up along vertical, transverse connection rod has one or many.
The loading device comprises a loading hydraulic cylinder device 4 and a force transmission device 5, the counter-supporting device comprises an adjustable support 6 and the force transmission device 5, and the force transmission devices 5 are respectively positioned in collision-resistant areas on two sides of the cab and are suspended on a transverse connecting rod above the cab through fixing belts. One end of the loading hydraulic cylinder device is fixed on the upright post of the loading device, and the other end of the loading hydraulic cylinder device is connected with the force transmission device. One end of the adjustable support is fixedly connected to the upright post of the counter-supporting device, and the other end of the adjustable support is connected with the force transmission device.
Preferably, the loading hydraulic cylinder device 4 comprises a hydraulic cylinder, a load sensor and an installation accessory, the hydraulic cylinder is connected with the load sensor through the installation accessory, and a piston rod in the hydraulic cylinder can be adjusted to stretch out and draw back. And a loading force is applied to the force transmission device in a double-hydraulic-cylinder loading mode.
Preferably, the adjustable support 6 comprises a sleeve, a right-handed threaded rod and a left-handed threaded rod, and the sleeve can rotate the right-handed threaded rod and/or the left-handed threaded rod to achieve length adjustment. The adjustable support applies pre-pressure to the force transmission device, so that a gap between the vehicle body and the support and reaction device is avoided, and the vehicle body is prevented from moving.
Preferably, the force transmission device 5 is a loading beam structure composed of a pipe 51, a wood pattern 52 and a rubber pad 53, as shown in fig. 3, the pipe 51 and the wood pattern 52 are bound and connected, and a layer of rubber pad 53 is arranged on the surface of the wood pattern 52, which is attached to the collision-resistant area. The method comprises the steps of preprocessing a wood pattern according to a drawing, binding a pipe 51 and the wood pattern 52 together by using a steel wire rope, preventing the wood pattern from deforming under stress, arranging a layer of rubber pad on the surface of the wood pattern to make up a small gap between part of the curved surface of a vehicle body and the wood pattern, and uniformly distributing loading force to a collision-resistant area of a cab through a force transmission device.
Preferably, said longitudinal tie rods 3 can be lengthened or replaced. When the length difference of the collision-resistant areas of the side walls of the partial locomotive/power vehicle is large, the length difference can be adjusted by lengthening or replacing the longitudinal connecting rod in the testing device.
The method comprises the steps of selecting a collision-resistant area of a side wall on one side of a cab of the locomotive/power vehicle as a loading end, selecting a collision-resistant area of a side wall on the other side of the cab of the locomotive/power vehicle as a reaction-supporting end, designing a loading device and a reaction-supporting device on two sides of the side wall of the cab of the locomotive/power vehicle respectively, and then connecting the loading device and the reaction-supporting device by using a transverse connecting rod through a window and/or a door of the cab, so that internal forces of a loading acting force and a reaction-supporting force in a test device are mutually counteracted. And the reverse points are reasonably arranged, so that the safety of the test is ensured.
When the side collision-resistant test of other locomotive/power vehicle cab with different structures and sizes is used, the longitudinal equipment position can be adjusted by lengthening or newly manufacturing the longitudinal connecting rod, the vertical installation position can be adjusted by adjusting the connecting height of the transverse connecting rod, and the universality is good.
Using method of the test device
Step 1: the test device is installed and combined according to the figure 1, the stretching amount of the loading hydraulic cylinder device and the length of the adjustable support are respectively adjusted, the power device is pre-pressed, and the vehicle body is prevented from moving in the loading process.
Step 2: and opening the load sensor and resetting, injecting oil into the hydraulic cylinder through an external oil pump to implement loading, monitoring the load sensor, and stopping loading until the load required by the test is reached.
And 3, step 3: and when the required load is reached and the required test data is acquired, the loading hydraulic cylinder is unloaded by reversely injecting oil through the external oil pump.
The device has the advantages that a loading frame can be built through the space of the cab door and the window of the locomotive/power vehicle or the top and the lower part of the cab door and the window, the loading force and the support reaction force are formed into internal force to be consumed in the loading frame, and parts can be adjusted or replaced to adapt to loading of collision-resistant structures of the side walls of the cab of the locomotive/power vehicle with different structures and sizes.
The foregoing examples are set forth to illustrate the present invention more clearly and are not to be construed as limiting the scope of the invention, which is defined in the appended claims to which the invention pertains, as modified in all equivalent forms, by those skilled in the art after reading the present invention.
Claims (9)
1. A side collision-resistant test device of a cab comprises a loading device and a supporting and reversing device, and is characterized by further comprising a transverse connecting rod (1);
the loading device is located outside the side wall on one side of the cab, the reaction device is located outside the side wall on the other side of the cab, one or more transverse connecting rods (1) are arranged and penetrate through the space above the top of the cab, the cab door, the cab window and/or the space below the bottom of the cab to connect the loading device and the reaction device.
2. The cab side collision-resistant test device according to claim 1, wherein the loading device and/or the reaction device is a frame structure built by two upright posts (2) and a longitudinal connecting rod (3), and the bottoms of the two upright posts (2) are fixed on the ground.
3. The cab side collision-resistant test device according to claim 1, wherein the loading device further comprises a loading hydraulic cylinder device (4) and a force transmission device (5), the force transmission device (5) is attached to the collision-resistant region on one side of the cab and is suspended on the upper transverse connecting rod (1) through a fixing belt, one end of the loading hydraulic cylinder device (4) is fixed on the upright column (2) of the loading device, and the other end of the loading hydraulic cylinder device is connected with the force transmission device (5).
4. The cab side collision-resistant test device according to claim 1, wherein the reaction device further comprises an adjustable support (6) and a force transmission device (5), the force transmission device (5) is attached to the collision-resistant region on the other side of the cab and is suspended on the transverse connecting rod (1) above through a fixing belt, one end of the adjustable support (6) is fixedly connected to the upright column (2) of the reaction device, and the other end of the adjustable support is connected to the force transmission device (5).
5. The cab side collision-resistant test device according to claim 3, wherein the loading hydraulic cylinder device (4) comprises a hydraulic cylinder, a load sensor and a mounting accessory, the hydraulic cylinder is connected with the load sensor through the mounting accessory, and a piston rod in the hydraulic cylinder can be adjusted and stretched.
6. The cab side collision-resistant test device according to claim 4, wherein the adjustable support (6) comprises a sleeve, a right-handed threaded rod and a left-handed threaded rod, and the sleeve can be adjusted in length by rotating the right-handed threaded rod and/or the left-handed threaded rod.
7. The cab side collision resistance test device according to claim 3 or 4, wherein the force transmission device (5) is a loading beam structure composed of a pipe (51), a wood model (52) and a rubber pad (53), the pipe (51) and the wood model (52) are connected in a binding manner, and the surface of the wood model (52) attached to the collision resistance area is provided with the rubber pad (53).
8. Cab side impact resistance test device according to claim 2, wherein the longitudinal connecting rod (3) is extendable or replaceable.
9. The cab side collision-resistant test device according to claim 2, wherein a plurality of U-shaped mounting grooves are formed in the upright column (2), and the transverse connecting rod (1) is vertically arranged through the U-shaped mounting grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911133748.8A CN110793791A (en) | 2019-11-19 | 2019-11-19 | Driver's cab side collision-resistant test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911133748.8A CN110793791A (en) | 2019-11-19 | 2019-11-19 | Driver's cab side collision-resistant test device |
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| CN110793791A true CN110793791A (en) | 2020-02-14 |
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| CN201911133748.8A Pending CN110793791A (en) | 2019-11-19 | 2019-11-19 | Driver's cab side collision-resistant test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166539A (en) * | 2021-11-29 | 2022-03-11 | 哈尔滨工程大学 | Large-scale engineering structure non-uniform load loading device |
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Application publication date: 20200214 |