Force and displacement real-time testing device for track plate push plate test

Abstract

The invention provides a force and displacement real-time testing device for a track plate pushing test, and belongs to the technical field of track engineering test devices.The force and displacement real-time testing device is characterized in that a pressure sensor is arranged at one end of a bearing device, the pressure sensor is tightly attached to the side of a track plate, and the bearing device provides pressure for the pressure sensor to abut against the track plate; the signal transmitter transmits a pressure signal acquired by the pressure sensor; the signal receiver receives the pressure signal transmitted by the signal transmitter, and a wireless range finder is arranged to obtain the vertical deviation condition of the track plate; and the display displays the pressure signal received by the signal receiver and the signal of the wireless range finder. The vertical offset condition of the track plate can be obtained through the three obtained displacement data, the telescopic base at the bottom of the testing device can be adjusted in time to guarantee horizontal pushing of the track plate, and then test preciseness is guaranteed; a telescopic device is arranged at the tail of the testing device, the length can be adjusted according to the distance between the reaction wall and the track structure, and it is ensured that the testing device abuts against the position between the reaction wall and the track structure.

Description

Technical Field

[0001] The invention relates to the technical field of track engineering test devices, and in particular to a real-time force and displacement test device for a track plate push plate test. Background Art

[0002] When a train runs on a ballastless track, it will generate transverse and longitudinal forces. The generated transverse and longitudinal forces will cause various diseases of the ballastless track. In the push plate test, in order to simulate the transverse and longitudinal forces generated by the train on the track plate, it is necessary to use horizontal thrust to push the track plate horizontally and vertically.

[0003] Most existing tests use separate jacks to push the plate, and the control of the push plate force is not stable enough. When the track plate moves, the pressure value of the jack pressure gauge reaches a peak and then drops rapidly, making it difficult to record this change. And due to the movement of the track plate, the piston of the jack cannot fit the track plate tightly, resulting in vertical offset. When testing the displacement of the track plate and the strain of the track structure, a separate set of displacement and strain measuring devices is required, and the displacement stress and pressure cannot be matched in real time. This operation is cumbersome and it is difficult to ensure the rigor of the experiment. Summary of the invention

[0004] The object of the present invention is to provide a real-time force and displacement testing device for track slab push plate test, so as to solve at least one technical problem existing in the above-mentioned background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a real-time force and displacement testing device for a track plate push test, comprising: a bearing device, one end of which is provided with a pressure sensor, the bearing device is used to be placed between a reaction wall and a track plate, the pressure sensor is tightly attached to the side of the track plate, and the bearing device provides the pressure sensor with pressure to press against the track plate; a signal transmitter, used to send a pressure signal collected by the pressure sensor; a signal receiver, used to receive the pressure signal sent by the signal transmitter; a wireless rangefinder is also provided on the bearing device, used to obtain the vertical offset of the track plate; a display, used to display the pressure signal received by the signal receiver and the signal of the wireless rangefinder; a telescopic device is provided at the other end of the bearing device, and the telescopic device presses against the reaction wall.

[0007] Furthermore, the supporting device includes a supporting cylinder, the pressure sensor is arranged at one end of the supporting cylinder, and the other end of the supporting cylinder is a pressure chamber; a piston that can slide in the supporting cylinder is arranged between the pressure chamber and the pressure sensor, and the pressure chamber is connected to an oil pressure power device for providing moving power to the piston.

[0008] Furthermore, a liftable base is provided at the bottom of the supporting tube.

[0009] Furthermore, three wireless rangefinders are provided, wherein two are provided at the bottom of the piston and one is provided at the top of the supporting cylinder.

[0010] Furthermore, a retaining ring is provided at one end of the bearing tube, and the pressure sensor is provided in a middle through hole of the retaining ring.

[0011] Furthermore, through holes are provided on the retaining ring at the two wireless rangefinders facing the bottom of the piston, and light-shielding plugs are provided in the through holes.

[0012] Furthermore, the oil pressure power device includes a power box body, one end of which is an oil storage tank; the oil storage tank is connected to an oil pump, and the oil pump is connected to the pressure chamber.

[0013] Furthermore, one end of the power box body is provided with an oil outlet connected to the pressure chamber; the oil storage tank is connected to the oil outlet through an oil delivery channel; the bottom of the oil suction chamber of the oil pump is provided with an oil suction port and an oil discharge port connected to the oil delivery channel; a reset bolt is provided on the oil delivery channel between the oil suction port and the oil discharge port.

[0014] Furthermore, the oil pump includes a plunger slidable in the oil suction chamber, and the plunger is connected to an operating handle located at the top of the oil pump.

[0015] Furthermore, a return spring and a plugging ball are provided in the oil suction port and the oil discharge port.

[0016] The beneficial effects of the present invention are as follows: the pressure sensor, displacement sensor and force device are integrated, which can be conveniently carried, reduce the time used for assembling each device, and facilitate the staff to carry out the push plate test; support the connection of strain gauges, which can concentrate the pressure, strain and displacement values ​​in real time on one display, and can correspond time, displacement, strain and pressure one by one at the same time, which is convenient for the calculation of subsequent track plate acceleration and other data; three different infrared rangefinders are set, and the three displacement data obtained can obtain the vertical offset of the track plate, and at this time, the retractable base at the bottom of the test device can be adjusted in time to ensure the flat push of the track plate. And then ensure the rigor of the test; a telescopic device is set at the tail of the test device, and the length can be adjusted according to the distance between the reaction wall and the track structure to ensure that the test device is between the reaction wall and the track structure.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, which will become obvious from the following description, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 The present invention is a schematic diagram of the structure of a load-bearing device of a real-time force and displacement testing device for a track slab push plate test according to an embodiment of the present invention.

[0020] Figure 2 It is a schematic structural diagram of an oil pressure power device of a real-time force and displacement testing device for a track plate push plate test according to an embodiment of the present invention.

[0021] Figure 3 It is a schematic diagram of the front structural view of the bearing device of the real-time force and displacement testing device for the track slab push plate test according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the oil pipeline structure of the real-time force and displacement testing device for track plate push plate test according to an embodiment of the present invention.

[0023] Figure 5 The present invention is a schematic diagram of the use status of the real-time force and displacement testing device for track slab push plate test according to an embodiment of the present invention.

[0024] Among them: 1-pressure sensor; 2-signal transmitter; 3-signal receiver; 4-wireless rangefinder; 5-display; 6-telescopic device; 7-carrying cylinder; 8-pressure chamber; 9-piston; 10-liftable base; 11-blocking ring; 12-shading plug; 13-power box body; 14-oil storage tank; 15-oil pump; 16-oil outlet; 17-oil delivery channel; 18-oil suction chamber; 19-oil suction port; 20-oil discharge port; 21-reset bolt; 22-plunger; 23-operating handle; 24-reset spring; 25-plug ball; 26-oil inlet; 27-oil delivery pipe; 28-block. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below by the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0026] It should be understood by those skilled in the art that unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which this invention belongs.

[0027] It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have a meaning consistent with that in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless as defined herein.

[0028] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or groups thereof.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0030] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the description of this specification, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present technology and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present technology.

[0032] Unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in this technology can be understood according to specific circumstances.

[0033] To facilitate understanding of the present invention, the present invention is further explained below with reference to specific embodiments in conjunction with the accompanying drawings, and the specific embodiments do not constitute a limitation on the embodiments of the present invention.

[0034] Those skilled in the art should understand that the drawings are merely schematic diagrams of embodiments, and the components in the drawings are not necessarily necessary for implementing the present invention.

[0035] Example

[0036] like Figures 1 to 3 As shown, in this embodiment, a real-time force and displacement testing device for a track plate push plate test is provided, including: a bearing device, one end of the bearing device is provided with a pressure sensor 1, the bearing device is used to be placed between the reaction wall and the track plate, the pressure sensor 1 is tightly attached to the side of the track plate, and the bearing device provides the pressure sensor with pressure to press against the track plate; a signal transmitter 2, used to send the pressure signal collected by the pressure sensor 1; a signal receiver 3, used to receive the pressure signal transmitted by the signal transmitter 2; the bearing device is also provided with a wireless rangefinder 4, used to obtain the vertical offset of the track plate; a display 5, used to display the pressure signal received by the signal receiver 3 and the signal of the wireless rangefinder 4; the other end of the bearing device is provided with a telescopic device 6, and the telescopic device 6 is pressed against the reaction wall.

[0037] Wherein, the bearing device includes a bearing cylinder 7, one end of which is provided with the pressure sensor 1, and the other end of the bearing cylinder 7 is a pressure chamber 8; a piston 9 which can slide in the bearing cylinder 7 is provided between the pressure chamber 8 and the pressure sensor 1, and the pressure chamber 8 is connected to an oil pressure power device for providing moving power to the piston 9. The pressure chamber 8 is provided at the rear and is blocked by a block 28 in the middle. Wherein, the telescopic device 6 is provided at the other end of the bearing cylinder 7, and the length can be adjusted according to the distance between the reaction wall and the track plate to ensure that they can be tightly pressed. The telescopic device 6 can use an X-shaped telescopic frame as shown in the figure. A liftable base 10 is provided at the bottom of the bearing cylinder 7.

[0038] In this embodiment, three wireless rangefinders 4 are provided, wherein two are provided at the bottom of the piston 9 and one is provided at the top of the bearing cylinder 7. The three displacement data obtained can obtain the vertical offset of the track plate. At this time, the liftable base 10 at the bottom can be adjusted in time to ensure the flat push of the track plate. Specifically, four electric telescopic rods can be used to support the bottom of the bearing cylinder as the liftable base 10. Among them, a magnetic attraction can be provided at the bottom of the wireless rangefinder 4, adsorbed on the bottom of the piston 9 and the bottom of one side of the display 5, and it is also convenient to replace. A retaining ring 11 is provided at one end of the bearing cylinder 7, and the pressure sensor 1 is provided in the middle through hole of the retaining ring 11. The wireless pressure sensor is placed inside the piston 9 as a part of the piston. At the same time, the wireless pressure sensor can be changed to different ranges according to different needs, and the pressure data is transmitted to the display by the signal transmitter. The display 5 supports the connection of a strain gauge, and the real-time strain data of the strain gauge can also be displayed in the display. The display 5 can simultaneously display displacement, pressure and strain, so that the three can be matched one by one in real time, and the pressure, strain and displacement limits can be set at the same time. When the pressure or displacement reaches the limit, an alarm may be sounded. Through holes are provided on the two wireless rangefinders 4 on the retaining ring 11 facing the bottom of the piston 9, and light shielding plugs 12 are provided in the through holes. The light shielding plugs 12 are mainly used to reflect laser light to assist the wireless rangefinder 4 in testing the distance. After the light shielding plugs 12 are pulled out, the wireless rangefinder 4 can be replaced.

[0039] The oil pressure power device includes a power box body 13, one end of which is an oil storage tank 14; the oil storage tank 14 is connected to an oil pump 15, and the oil pump 15 is connected to the pressure chamber 8. One end of the power box body 13 is provided with an oil outlet 16 connected to the pressure chamber 8; the oil storage tank 14 is connected to the oil outlet 16 through an oil delivery channel 17; the bottom of the oil suction chamber 18 of the oil pump 15 is provided with an oil suction port 19 and an oil discharge port 20 connected to the oil delivery channel 17; a reset bolt 21 is provided on the oil delivery channel between the oil suction port 19 and the oil discharge port 20. The oil pump 15 includes a plunger 22 slidable in the oil suction chamber 18, and the plunger 22 is connected to an operating handle 23 located at the top of the oil pump 15. The oil suction port 19 and the oil discharge port 20 are both provided with a reset spring 24 and a plugging ball 25.

[0040] In a specific embodiment, the pressure chamber 8 of a carrier tube can be used through the oil inlet 26 provided at the top. Figure 4 The oil delivery pipe 27 shown in (a) is connected to an oil pressure power device. Specifically, one end of the oil delivery pipe 27 is connected to the oil outlet 16, and the other end is connected to the oil inlet 26. In another specific embodiment, the pressure chambers 8 of the two bearing cylinders can be used through the oil inlet 26 set at the top. Figure 4The T-shaped oil pipe 27 shown in (b) is connected to the same hydraulic power device, so that the two supporting cylinders can be forced at the same time, which can ensure that the track plate will not produce horizontal rotation when the push plate is pushed. Specifically, the two ends of the T-shaped oil pipe are respectively connected to the oil inlet 26 of a supporting device, and the middle end of the T-shaped oil pipe is connected to the oil outlet 16 of the same hydraulic power device.

[0041] Combination Figure 5 As described above, the real-time force and displacement test device for the track plate push plate test described in this embodiment, when in use, the bearing device is placed between the reaction wall and the track plate, the display 5 is turned on, the pressure sensor 1 is placed close to the side of the track plate, the display 5 is observed and the liftable base 10 is adjusted to keep the pressure sensor 1 horizontal and perpendicular to the track plate. Then one end of the oil pipe 27 is connected to the oil inlet 26, and the other end is connected to the oil outlet 16 of the oil pressure power device. Then the plunger 22 is controlled to move up and down by controlling the operating handle 23 to pressurize, so that the oil in the oil storage tank 14 enters the pressure chamber 8 through the oil pump 15 and the oil pipe 27, thereby pushing the piston 9 forward. The block 28 set at the bottom of the piston 9 can prevent the piston from over-extending into the pressure chamber 8. A wireless rangefinder 4 is set at the bottom edge of the piston 9, and a light shielding plug is set in a hole in the block just in front of the wireless rangefinder 4 for distance measurement and dust prevention. Among them, an oil suction port 19 and an oil discharge port 20 are set just below the plunger 22, and a reset spring and a plug ball are provided inside to control the in and out of the oil. Among them, stainless steel balls can be used as plug beads.

[0042] A reset bolt 21 is arranged at the lower part between the oil suction port 19 and the oil discharge port 20. When pressurizing, tighten the reset bolt 21 to block the connection between the oil delivery channel and the oil discharge port 20 and the oil outlet 16. When pressurizing is finished, unscrew the reset bolt, and the oil delivery channel is connected with the oil discharge port 20 and the oil outlet 16, so that the pressure in the pressure chamber 8 and the oil suction chamber 18 is balanced, thereby resetting the piston 9.

[0043] Working principle: When using this device, the oil pressure power unit and the pressure chamber of the bearing device are connected together through the oil pipe 27, and the operating handle 23 is lifted to make the plunger 22 rise. The hydraulic oil enters the oil suction chamber 18 of the oil pump from the oil storage tank through the oil suction port 19, and then the operating handle 23 is pressed down. The hydraulic oil pushes out the steel ball in the oil discharge port 20 through the oil outlet 16 and the oil pipe into the pressure chamber 8. By repeatedly pressurizing the operating handle 20, the pressure in the pressure chamber 8 is increased, and the piston 9 is pushed out. The pressure sensor 1 at the piston head and the infrared rangefinder 4 at the bottom edge of the piston and the head of the display transmit the measured pressure and distance to the signal receiver at the end of the display through the signal transmitter, and the signal is displayed on the display. When the track plate has a vertical offset, the distances measured by the infrared rangefinder at three different positions will be different. At this time, the height of the liftable base 10 can be manually adjusted according to the offset to make the track plate move horizontally. When the loading is completed, the reset bolt is screwed out to balance the pressure and the piston returns to the back. Compared with traditional jacks, the height of the liftable base 10 can be manually adjusted to ensure the translational movement of the track plate; at the same time, one power unit can connect two test devices through a two-way oil pipeline to ensure that the two jacks generate the same pressure; the display can be connected to a strain gauge, and the devices for measuring pressure, stress and displacement can be concentrated in the power unit 22 at the same time, which is lighter and faster; during the loading process, the changes in stress, pressure and displacement can be recorded in real time, and the changes in stress, pressure and displacement over time can be matched one by one, thereby calculating data such as the acceleration of the track plate.

[0044] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative work on the basis of the technical solution disclosed in the present invention should be included in the scope of protection of the present invention.

Claims

1. A real-time force and displacement testing device for track slab push plate test, characterized in that: include: A bearing device, wherein a pressure sensor (1) is provided at one end of the bearing device, the bearing device is used to be placed between the reaction wall and the track plate, the pressure sensor (1) is closely attached to the side of the track plate, and the bearing device provides the pressure sensor with pressure to press against the track plate; a signal transmitter (2) is used to send a pressure signal collected by the pressure sensor (1); a signal receiver (3) is used to receive the pressure signal transmitted by the signal transmitter (2); the bearing device is also provided with a wireless rangefinder (4) for obtaining the vertical displacement of the track plate; a display (5) is used to display the pressure signal received by the signal receiver (3) and the signal of the wireless rangefinder (4); a telescopic device (6) is provided at the other end of the bearing device, and the telescopic device (6) is pressed against the reaction wall.

2. The real-time force and displacement testing device for track slab push plate test according to claim 1 is characterized in that: The bearing device comprises a bearing cylinder (7), one end of which is provided with the pressure sensor (1), and the other end of which is a pressure chamber (8); a piston (9) which can slide in the bearing cylinder (7) is provided between the pressure chamber (8) and the pressure sensor (1), and the pressure chamber (8) is connected to an oil pressure power device for providing moving power to the piston (9).

3. The real-time force and displacement testing device for track slab push plate test according to claim 2 is characterized in that: A liftable base (10) is provided at the bottom of the supporting tube (7).

4. The real-time force and displacement testing device for track slab push plate test according to claim 2 is characterized in that: Three wireless distance meters (4) are provided, wherein two are provided at the bottom of the piston (9) and one is provided at the top of the supporting cylinder (7).

5. The real-time force and displacement testing device for track slab push plate test according to claim 4 is characterized in that: A retaining ring (11) is provided at one end of the bearing tube (7), and the pressure sensor (1) is arranged in a middle through hole of the retaining ring (11).

6. The real-time force and displacement testing device for track slab push plate test according to claim 5, characterized in that: Through holes are provided on the retaining ring (11) at the two wireless distance meters (4) facing the bottom of the piston (9), and light shielding plugs (12) are provided in the through holes.

7. The real-time force and displacement testing device for track slab push plate test according to claim 2, characterized in that: The oil pressure power device comprises a power box body (13), one end of which is an oil storage tank (14); the oil storage tank (14) is connected to an oil pump (15), and the oil pump (15) is connected to the pressure chamber (8).

8. The real-time force and displacement testing device for track slab push plate test according to claim 7, characterized in that: An oil outlet (16) communicating with the pressure chamber (8) is provided at one end of the power box body (13); the oil storage tank (14) is communicated with the oil outlet (16) via an oil delivery channel (17); an oil suction port (19) and an oil discharge port (20) communicating with the oil delivery channel (17) are provided at the bottom of the oil suction chamber (18) of the oil pump (15); and a reset bolt (21) is provided on the oil delivery channel between the oil suction port (19) and the oil discharge port (20).

9. The real-time force and displacement testing device for track slab push plate test according to claim 8, characterized in that: The oil pump (15) comprises a plunger (22) which is slidable in the oil suction chamber (18), and the plunger (22) is connected to an operating handle (23) located at the top of the oil pump (15).

10. The real-time force and displacement testing device for track slab push plate test according to claim 8, characterized in that: The oil suction port (19) and the oil discharge port (20) are both provided with a return spring (24) and a plugging ball (25).

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