Portable mobile detection vehicle for detecting elastic modulus of railway ballast bed

Abstract

The utility model relates to a portable mobile detection vehicle for detecting the elastic modulus of a railway ballast bed, which is characterized in that a vehicle body frame is of a box type structure, the bottom of a box body is clamped on a rail and can move and walk along the rail in the detection process, and a force hammer is movably connected on the vehicle body frame through a connecting rod and can swing up and down along the connecting rod; when the force hammer swings up and down, the force hammer knocks the ballast bed, the first sensor is arranged on the force hammer and used for receiving an input end wave signal generated by knocking when the force hammer knocks the ballast bed, the spike is used for being inserted into the railway ballast bed, and the second sensor is arranged on the spike and used for receiving an output end wave signal generated in the ballast bed in the knocking process of the force hammer; and the dynamic signal acquisition instrument is arranged in the box body of the vehicle body frame, is in data connection with the sensor I and the sensor II, and is used for receiving the input end wave signal and the output end wave signal, processing the signals and transmitting the signals to a computer end. According to the utility model, the knock point can be accurately controlled, the test accuracy is improved, the problems that the test operation is tedious and the arrangement of instruments consumes time are solved, the test efficiency is improved, and the time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of ballast track bed detection, and particularly relates to a portable mobile detection vehicle for detecting the elastic modulus of a railway bed. Background Art

[0002] At present, the elastic surface wave method is rarely used for track bed detection. During the test process, sensors and lines are mostly arranged manually, which is rather messy and time-consuming. A person holds a hammer and strikes the tie plate by hand. In this way, neither can the accuracy of the striking points be guaranteed, which affects the accuracy of test data calculation, nor can the disturbance of the test area caused by human factors in the test be avoided. Moreover, in order to conduct track bed detection tests, instruments need to be arranged at multiple work sites for testing. However, the time for accessing the high-speed railway is limited. How to improve the efficiency is the top priority to be solved. Moreover, a large amount of time outside the test is wasted on re-arranging the test equipment each time. There is also inevitably the problem that the on-site arrangement of basic detection means is messy. Test personnel may cause problems such as mis-triggering and damage to instrument lines. Therefore, reducing the unnecessary disturbance to the test instruments should also be an issue worthy of attention, so as to reduce the error of the test. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the utility model provides a portable mobile detection vehicle for detecting the elastic modulus of a railway bed, which can achieve precise control of the striking points and improve the accuracy of the test. At the same time, through the portable mobile detection vehicle provided by the utility model, the problems of cumbersome test operation and relatively time-consuming instrument arrangement are overcome, and the test efficiency is improved to a certain extent, saving time.

[0004] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0005] The utility model provides a portable mobile detection vehicle for detecting the elastic modulus of a railway bed, including: a vehicle body frame, the vehicle body frame is of a box structure, and the bottom of the box is clamped on the railway track and can move along the railway track during the detection; a force hammer and a first sensor, the force hammer is movably connected to the vehicle body frame through a connecting rod and can swing up and down with the connecting rod. When swinging up and down, the force hammer strikes the track bed, and the first sensor is arranged on the force hammer and is used for receiving the input end wave signal generated by the strike when the force hammer strikes the track bed; a spike and a second sensor, the spike is used for inserting into the railway track bed, and the second sensor is arranged on the spike and is used for receiving the output end wave signal generated in the track bed during the process of the force hammer striking; a dynamic signal collector, the dynamic signal collector is built in the box of the vehicle body frame and is data-connected to the first sensor and the second sensor, and is used for receiving the input end wave signal and the output end wave signal and transmitting them to the computer terminal after processing.

[0006] As a further improvement of any of the above solutions, the position where the spike is inserted into the railway roadbed is collinear with the force hammer in the traveling direction of the vehicle body frame along the railway track.

[0007] As a further improvement of any of the above solutions, it further includes: at least one spike placement hole, which is arranged on the vehicle body frame and is used to carry and store the spikes for detection.

[0008] As a further improvement of any of the above solutions, the vehicle body frame further includes: a detection instrument storage bin, which is arranged inside the box of the vehicle body frame and is used to store the instruments for detection.

[0009] As a further improvement of any of the above solutions, a strip-shaped groove is preset on the vehicle body frame, the connecting rod is located in the strip-shaped groove and is connected to the vehicle body frame through a bolt hole, and the connecting rod can drive the force hammer to swing up and down around the bolt hole.

[0010] As a further improvement of any of the above solutions, the connecting rod at least includes a connecting rod one and a connecting rod two that are sleeved with each other and can be telescopically adjusted in length for lateral point selection when the force hammer strikes the roadbed.

[0011] As a further improvement of any of the above solutions, the first sensor is a strain gauge, which is used to record the input wave signal on the force hammer and upload it to the dynamic signal acquisition instrument.

[0012] As a further improvement of any of the above solutions, the strain gauge is closely attached to the top surface or side surface of the force hammer, near the striking position.

[0013] As a further improvement of any of the above solutions, it further includes: a hand push rod, which is fixedly connected to at least one side of the front side or the rear side of the vehicle body frame and is used to facilitate pushing the vehicle body frame to move along the railway track.

[0014] As a further improvement of any of the above solutions, at least one set of clamping wheels is arranged at the bottom of the vehicle body frame to match the railway track and is used to clamp on the railway track and move.

[0015] The utility model provides a portable mobile detection vehicle for detecting the elastic modulus of a railway roadbed, which overcomes the deficiencies of the prior art, can quickly deploy test instruments to carry out tests, and can offset the uncertainty brought by manual drop hammers through a simple device, realizing precise control of the drop hammer point positions, and greatly improving the test efficiency and accuracy. The beneficial effects of the utility model are as follows:

[0016] (1) For the portable mobile detection vehicle of the utility model, the main structure adopts a vehicle body frame, the vehicle body frame is light and easy to move, and can move along the railway track during the detection process, facilitating the test personnel to quickly carry out tests at different work sites and saving time.

[0017] (2) The portable mobile detection vehicle of the present utility model uses the elastic surface wave method. During the detection of the ballast bed, the force hammer on it can strike the ballast bed, and the sensor collects the induction data and transmits it through the data line. The outer shell of the vehicle body frame can protect the test line, facilitating the layout and conduct of the test, and has high practicality.

[0018] (3) The portable mobile detection vehicle of the present utility model realizes the lateral point selection during the force hammer strike by adjusting the length of the connecting rod. At the same time, the connecting rod is movably connected to the bolt holes of the vehicle body frame, and the position of each strike after the force hammer is lifted is determined, so that the strike position can be accurately controlled, improving the accuracy of the test.

[0019] (4) The portable mobile detection vehicle of the present utility model realizes the collection, processing, and uploading of data by setting up a dynamic signal acquisition instrument, a sensor, a data transmission line, etc., facilitating researchers to study the state of the ballast bed.

[0020] (5) The portable mobile detection vehicle of the present utility model is provided with components such as spike placement holes and detection instrument storage bins, facilitating the carrying and storage of instruments and simplifying the layout of instrument equipment.

[0021] It should be understood that the implementation of any embodiment of the present invention does not mean that multiple or all of the above beneficial effects need to be simultaneously possessed or achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained based on the provided drawings.

[0023] The structures, ratios, sizes, etc. depicted in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essence. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the efficacy and purpose that the present invention can achieve, should still fall within the scope covered by the technical content disclosed in the present invention.

[0024] Figure 1 It is a top view structural schematic diagram of a portable mobile detection vehicle according to an embodiment of the present utility model;

[0025] Figure 2 It is a front view structural schematic diagram of a portable mobile detection vehicle according to an embodiment of the present utility model;

[0026] Figure 3 Schematic diagram of the spike structure according to an embodiment of the present utility model;

[0027] Figure 4 Top view structural schematic diagram of a portable mobile detection vehicle according to another embodiment of the present utility model.

[0028] In the figure:

[0029] 1, vehicle body frame; 2, force hammer; 21, sensor one; 3, hand push rod; 4, spike; 41, sensor two; 5, clamping wheel; 6, dynamic signal acquisition instrument; 7, connecting rod; 8, detection instrument storage bin; 9, spike placement hole.

[0030] In each of the drawings, the same or corresponding reference numerals represent the same or corresponding parts. Specific embodiments

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer and more understandable, the embodiments of the present invention will be further described in detail below in conjunction with the embodiments and the drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but not to limit the present invention.

[0032] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] It should be understood that terms such as "including / containing", "consisting of..." or any other variant are intended to cover non-exclusive inclusion, so that products, devices, processes or methods including a series of elements not only include those elements, but also include other elements that are not clearly listed when needed, or also include elements inherent to such products, devices, processes or methods. Without further limitation, the elements defined by the statement "including / containing..." or "consisting of..." do not exclude the existence of additional identical elements in the products, devices, processes or methods including the said elements.

[0034] It should also be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device, component or structure must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation to the present invention.

[0035] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0036] To better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the drawings and specific embodiments.

[0037] The present utility model provides a portable mobile detection vehicle for detecting the elastic modulus of a railway roadbed. Refer to Figures 1 to 3 , which mainly includes a vehicle body frame 1, a force hammer 2, a spike 4, and a dynamic signal collector 6.

[0038] The so-called elastic modulus is the Young's modulus in the sense of physical mechanics.

[0039] The vehicle body frame 1 is of a box structure and serves as the main structure of the entire portable mobile detection vehicle. The bottom of the box is clamped on the railway track and can move along the track during the detection process. At the same time, other components are loaded on the vehicle body frame 1. The force hammer 2 is movably connected to the vehicle body frame 1 through a connecting rod 7 and can swing up and down with the connecting rod 7. When swinging up and down, the force hammer 2 strikes the roadbed. A sensor 21 is arranged on the force hammer 2 and is used to receive the input end wave signal generated by the strike when the force hammer 2 strikes the roadbed. The spike 4 is used to insert into the railway roadbed, and a sensor 41 is arranged on the spike 4 and is used to receive the output end wave signal generated in the roadbed during the strike of the force hammer 2. The dynamic signal collector 6 is built into the box of the vehicle body frame 1 and is data-connected to the sensor 21 and the sensor 41, and is used to receive the input end wave signal and the output end wave signal and transmit them to the computer terminal after processing for the experimenter to analyze and use. The portable mobile detection vehicle of the present utility model can quickly deploy the test instruments to conduct the test, and offset the uncertainty brought by the manual drop hammer through a simple device, realize the precise control of the drop hammer position, and greatly improve the test efficiency and accuracy.

[0040] Refer to Figure 1, the portable mobile detection vehicle of the present utility model can be used in harsh field environments, can be erected quickly, and has good use effects. At the same time, the outer shell of the vehicle body frame 1 can protect the test circuit, facilitating the layout and conduct of the test, and has high practicability.

[0041] To cooperate with the detection of the bed modulus, the position where the spike 4 is inserted into the railway bed is collinear with the force hammer 2 in the direction of the vehicle body frame 1 walking along the railway track, that is, the position where the spike 4 is inserted into the railway bed should be on the same straight line as the force hammer 2 in the front-back direction in the figure.

[0042] Continue to refer to Figure 1 、 Figure 2 , to facilitate the tester to move the detection vehicle, the hand push rod 3 is fixedly connected to the rear side of the vehicle body frame 1, facilitating pushing to make the vehicle body frame 1 move along the railway track. It should be noted that the hand push rod 3 can also be fixedly connected to the front side of the vehicle body frame 1, facilitating pulling to make the vehicle body frame 1 move along the railway track in different front-back directions. The hand push rod 3 can also be simultaneously arranged on the front side and the rear side of the vehicle body frame 1, so that the vehicle body frame 1 can be both pushed and pulled, making the vehicle body frame 1 move more flexibly in different front-back directions on the railway track and facilitating use. A hand push handle is installed on the hand push rod 3 to facilitate the tester to apply force to push the vehicle.

[0043] Refer to Figure 2 , a set of clamping wheels 5 matching the railway track are arranged at the bottom of the vehicle body frame 1. To increase stability, multiple sets of clamping wheels 5 can also be arranged. During the test, first clamp the clamping wheels 5 on one side of the railway track, and then the tester can make the trolley move back and forth on the railway track by pushing and pulling using the clamping wheels 5. The clamping wheels 5 can also be provided with a clamping device. When the tester selects the test point, the vehicle body frame 1 can be fixed on the railway track using the clamping device to improve the accuracy of the test detection data.

[0044] Continue to refer to Figure 1 , a spike placement hole 9 is also arranged on the vehicle body frame 1 of the trolley. The spike placement hole 9 can be set to one or more, with a size and shape matching the spike 4, and can fixedly store the spike 4 on the vehicle body frame 1, or carry the spike 4 at any time during the test to prevent loss. It is easy to understand that the spike 4 is placed on the vehicle body frame 1 in a separable manner. During storage, place the spike 4 into the spike placement hole 9; during the test, take out the spike 4 and knock the spike 4 into the ballast using a rubber hammer. Such a design can prevent the loss of the spike 4 and facilitate the tester to store and use it quickly.

[0045] It should be noted that refer to Figure 1 、 Figure 3, a sensor two 41 is provided at the head of the spike 4, which can upload the output wave signal generated in the roadbed during the process of the spike 4 being struck by the force hammer to the dynamic signal collector 6. After the dynamic signal collector 6 processes the data, it transmits the surface wave data to the computer of the test personnel for the test personnel to study and analyze. The tail tip of the spike 4 is designed to facilitate the test personnel to drive the spike 4 into the ballast more labor-saving. The spike 4 and its sensor two 41 are interconnected with the dynamic signal collector 6 through a data line.

[0046] It should be understood that as Figure 1 shown, an embodiment of the present invention includes a spike 4 for detection. During the test, the spike 4 is driven into the ballast. It is necessary to measure Figure 1 the vertical distance L between the point of the force hammer 2 and the point of the spike 4 and record it to assist the test personnel in analyzing the data later. As Figure 4 shown, another embodiment of the present invention includes two spikes 4 for detection. During the test, the spikes 4 are respectively driven into different positions of the ballast. It is necessary to measure Figure 4 the vertical distance L1 between the point of the force hammer 2 and the first point of the spike 4 and the vertical distance L2 between the point of the force hammer 2 and the second point of the spike 4, and record them respectively to assist the test personnel in analyzing the data later. Thus, it can be seen that multiple spikes 4 can be driven into different points of the ballast, and then it is necessary to record the vertical distances between the point of the force hammer 2 and the spikes 4 at multiple different points respectively to enrich the research data.

[0047] The portable mobile detection vehicle of the present invention further includes a backing plate, and the backing plate is made of steel or iron. During the test, the backing plate is placed on the roadbed, and the force hammer 2 is used to strike the backing plate at equal intervals, which is conducted into the roadbed, and finally the induced signal data is collected for the test personnel to analyze.

[0048] Continue to refer to Figure 2 , a detection instrument storage bin 8 is further provided inside the box body of the vehicle frame 1. The detection instrument storage bin 8 can be set as a cuboid hollow structure. Detection instruments such as a rubber hammer and a backing plate for the test can be placed in it, which is convenient for storing and carrying the instruments and also convenient for the layout of the instrument equipment.

[0049] Continue to refer to Figure 1 , Figure 2 , the vehicle frame 1, as the main structure carrying the force hammer 2, ensures the forward and backward movement and the knocking fixed point of the force hammer 2. A strip-shaped groove is preset on one side of the vehicle frame 1. The strip-shaped groove is a through groove. The connecting rod 7 is located in the strip-shaped groove and is connected to the vehicle frame 1 through a bolt hole. And the connecting rod 7 can drive the force hammer 2 to swing up and down around the bolt hole. In this way, the point where the force hammer 2 strikes each time after being lifted is determined, so that the knocking point can be accurately controlled and the accuracy of the test can be improved.

[0050] The connecting rod 7 includes a first connecting rod and a second connecting rod that are sleeved with each other, and can be telescopically adjusted in length, facilitating lateral point selection when the power hammer strikes the roadbed. It is easy to understand that the connecting rod 7 can also include more sub-connecting rods, which are sleeved with each other to facilitate adjusting the length of the connecting rod within a larger range and helping the power hammer 2 to perform lateral point selection.

[0051] It should be noted that multiple sub-connecting rods with different cross-sectional diameters are sleeved with each other, and the overall length of the connecting rod can be adjusted by screwing the clamping holes, and the length is fixed after lateral point selection.

[0052] See Figure 2 , the first sensor 21 on the power hammer 2 is a strain gauge, which records the data on the power hammer 2 and transmits it to the dynamic signal collector 6 for processing test data. The strain gauge should be closely attached to the top surface or side surface of the power hammer 2, close to the striking position. It is easy to understand that the strain gauge is an element for measuring strain. The working principle of the strain gauge is based on the strain effect, that is, when a conductor or semiconductor material generates mechanical deformation under the action of an external force, its resistance value changes accordingly, and then the strain data is uploaded to the dynamic signal collector 6 through the data transmission line for processing.

[0053] Continue to see Figure 1 , the dynamic signal collector 6 is built into the box body of the vehicle body frame 1, and is data-connected to the first sensor 21 and the second sensor 41, and is used to receive the input end wave signal and the output end wave signal, and after processing, it is transmitted to the computer end for the test personnel to research and analyze.

[0054] The detection process of the present utility model is as follows: Assemble the portable mobile detection vehicle on one side of the railway track through the clamping wheel 5, take out the spike 4 from the spike placement hole 9, take out the rubber hammer and the backing plate from the detection instrument storage bin 8, place the backing plate on the roadbed, knock the spike 4 into the ballast with the rubber hammer, and place the second sensor 41 (three-phase sensor) on it to receive elastic surface waves such as Rayleigh waves propagating in the roadbed. Pull out the tape measure in the direction parallel to the railway track from the spike 4 to calibrate the spacing. Use the power hammer 2 with the first sensor 21 (strain gauge) attached to strike the backing plate at equal intervals, conduct it into the roadbed, and at the same time use the dynamic signal collector 6 to record and process the data of the input end wave signal of the power hammer 2 sensor and the output end wave signal of the spike 4 sensor, and upload it to the computer end. Finally, use the dispersion curve extraction method of the Rayleigh wave horizontal-vertical component superposition dispersion energy spectrum to study the state of the ballast roadbed.

[0055] It can be seen that through the portable mobile detection vehicle of the present utility model, the test instruments can be quickly arranged to carry out the test, and the uncertainty brought by manual drop hammer can be offset by a simple device, realizing the precise control of the drop hammer position, and greatly improving the test efficiency and accuracy. By setting up a dynamic signal collector, sensors, data transmission lines, etc., the acquisition, processing and uploading of data are realized, which is convenient for researchers to study the state of the ballast roadbed.

[0056] Although several specific implementation details are included in the above description, these should not be construed as limiting the scope of the present invention. Certain features described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, the various features described in the context of a single implementation can also be implemented separately or in any suitable sub-combination in multiple implementations.

[0057] The embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to technologies in the market, or to enable other ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A portable mobile detection vehicle for detecting the elastic modulus of a railway roadbed, characterized in that, Including: A car body frame, which is a box structure, and the bottom of the box is clamped on the railway track and can move along the track during the detection process; A force hammer and a first sensor. The force hammer is movably connected to the car body frame through a connecting rod and can swing up and down with the connecting rod. When swinging up and down, the force hammer strikes the roadbed. The first sensor is arranged on the force hammer and is used to receive the input wave signal generated by the strike when the force hammer strikes the roadbed; A spike and a second sensor. The spike is used to insert into the railway roadbed, and the second sensor is arranged on the spike and is used to receive the output wave signal generated in the roadbed during the process of the force hammer striking; A dynamic signal collector, which is built into the box of the car body frame, is data-connected to the first sensor and the second sensor, and is used to receive the input wave signal and the output wave signal, and after processing, transmit them to the computer terminal.

2. The portable mobile detection vehicle according to claim 1, characterized in that The position where the spike is inserted into the railway roadbed is collinear with the force hammer in the direction of the car body frame moving along the track.

3. The portable mobile detection vehicle according to claim 1, wherein It also includes: At least one spike placement hole, which is arranged on the car body frame and is used to carry and store the spikes for detection.

4. The portable mobile detection vehicle according to claim 1, characterized in that, The car body frame also includes: A detection instrument storage bin, which is arranged inside the box of the car body frame and is used to store the detection instruments.

5. The portable mobile detection vehicle according to claim 1, characterized in that, A strip-shaped groove is preset on the car body frame. The connecting rod is located in the strip-shaped groove and is connected to the car body frame through a bolt hole, and the connecting rod can drive the force hammer to swing up and down around the bolt hole.

6. The portable mobile detection vehicle according to claim 5, characterized in that, The connecting rod at least includes a first connecting rod and a second connecting rod sleeved with each other and can be telescopically adjusted in length for lateral point selection when the force hammer strikes the roadbed.

7. The portable mobile detection vehicle according to claim 1, characterized in that, The first sensor is a strain gauge, which is used to record the input wave signal on the force hammer and upload it to the dynamic signal collector.

8. The portable mobile detection vehicle according to claim 7, wherein The strain gauge is closely attached to the top surface or side surface of the force hammer, close to the striking position.

9. The portable mobile detection vehicle according to claim 1, characterized in that, It also includes: A hand push rod, which is fixedly connected to at least one side of the front side or the rear side of the car body frame and is used to facilitate pushing the car body frame to move along the track.

10. The portable mobile detection vehicle according to claim 1, characterized in that, At least one set of clamping wheels is arranged at the bottom of the car body frame to match the railway track and is used to clamp on the railway track and move.

Images