Platform car device for test

Abstract

The invention relates to a platform car device for test, which relates to the technical field of wind tunnel machinery and comprises a test bed, a spiral lifting mechanism and a cooling mechanism. V-shaped guide wheels and rollers are arranged at the bottom of the test bed and are respectively matched with the track and the ground. And the spiral lifting mechanism is arranged at the corner of the bottom of the test bed and has a switchable suspended state and a ground attaching state. The cooling mechanism is arranged between the test bed and the V-shaped guide wheel, and when the spiral lifting mechanism is in a suspended state and the V-shaped guide wheel rolls, the cooling mechanism is started to cool the guide wheel; and when the spiral lifting mechanism is in the ground attaching state and the V-shaped guide wheel stops rolling, the cooling mechanism stops running. Compared with the prior art, the running stability of the V-shaped guide wheel can be effectively improved, and the service life of the V-shaped guide wheel can be effectively prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of wind tunnel machinery, in particular to a test platform vehicle device. Background Art

[0002] During wind tunnel testing, the station chamber, which houses the test sections and contraction sections, must maintain internal and external pressure isolation by closing the chamber door during testing to maintain optimal test conditions. Due to the limited space in the station chamber, multiple test sections and models must be frequently transported between the test hall and the station chamber, relying on a platform truck to traverse the tunnel between the two. To meet the air-cushioned transport requirements for 100-ton components, the platform truck must possess a high load-bearing capacity, a flat surface, be capable of lifting and lowering, and possess excellent guidance performance. Furthermore, its surface must be flush with the self-leveling floor of the hall and the steel plate surface of the station chamber.

[0003] Through practice, the applicant discovered that the existing technology often relies on manual handling and adjustment of hydraulic or screw jacks to achieve platform lifts and heavy load support. Operators must manually place, adjust, and remove multiple jacks in narrow tunnels, resulting in high labor intensity and low operational efficiency. Furthermore, the platform's V-shaped guide wheels easily heat up during testing, resulting in a short service life. Summary of the Invention

[0004] The invention discloses a test platform vehicle device, which aims to solve the technical problems of low operating efficiency and easy heating of V-shaped guide wheels in the test platform vehicle device in the related art.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions: A test platform vehicle device comprises: a test bench, the bottom of which is rotatably provided with V-shaped guide wheels and rollers, the V-shaped guide wheels rolling on tracks within a stationary chamber tunnel, and the rollers rolling in cooperation with the ground within the stationary chamber tunnel; a spiral lifting mechanism provided at the bottom corners of the test bench, the spiral lifting mechanism being capable of vertical elevation, and the spiral lifting mechanism having a switchable suspended state and a ground-attached state; A cooling mechanism is provided between the test bench and the V-shaped guide wheel, and is used to cool the V-shaped guide wheel when the V-shaped guide wheel rolls on the track; when the spiral lifting mechanism is in a suspended state and the V-shaped guide wheel rolls normally in the stationary tunnel, the cooling mechanism starts and cools the V-shaped guide wheel; when the spiral lifting mechanism is in a ground-attached state and the V-shaped guide wheel stops rolling in the stationary tunnel, the cooling mechanism automatically stops cooling the V-shaped guide wheel.

[0006] Optionally, the spiral lifting mechanism includes a driving component and a lifting component, the driving component is in transmission connection with the lifting component, and the lifting component is used to achieve lifting in the vertical direction under the action of the driving component.

[0007] Optionally, the driving assembly includes a servo motor, a horizontal lead screw and a horizontal bevel gear, and the lifting assembly includes a vertical lead screw, a vertical bevel gear, a lifting screw and a contact plate, wherein the servo motor is arranged at the bottom of the test bench, the horizontal lead screw is coaxially arranged on the output shaft of the servo motor, and a hollow shell is provided at the bottom of the test bench, and the horizontal lead screw is rotatably inserted in the shell; the vertical lead screw is rotatably arranged in the shell, the vertical bevel gear is coaxially arranged on the vertical lead screw, and the horizontal bevel gear is meshed with the vertical bevel gear; a thread groove is coaxially provided inside the vertical lead screw, and the lower end of the thread groove is opened, the lifting screw thread is inserted in the thread groove, and the lower end of the lifting screw extends out of the shell, and the contact plate is provided at the lower end of the lifting screw; a limit assembly is also provided in the shell, and the limit assembly is used to limit the rotation of the lifting screw when the vertical lead screw rotates.

[0008] Optionally, the limiting assembly includes a limiting column, which is vertically arranged in the shell, and the limiting column has a limiting groove along its own length direction. A limiting block is provided on the outer wall of the lifting screw, and the limiting block is slidably inserted in the limiting groove.

[0009] Optionally, both upper and lower ends of the limiting groove are sealed.

[0010] Optionally, the cooling mechanism includes a heat exchange component and an opening and closing component, and the opening and closing component is electrically connected to the heat exchange component, wherein, when the floor is in a suspended state and the V-shaped guide wheel rolls normally in the stationary tunnel, the opening and closing component is in an open state to enable the heat exchange component to operate and continuously take away the heat generated when the V-shaped guide wheel rolls; when the floor is in a ground-contact state and the V-shaped guide wheel stops rolling in the stationary tunnel, the opening and closing component is in a closed state to stop the heat exchange component from operating, and at this time the V-shaped guide wheel is left to cool down on its own.

[0011] Optionally, the opening and closing assembly includes a battery, a push block, a mounting plate, a first conductive sheet, a torsion spring and a second conductive sheet, wherein the battery is installed in the test bench, the push block is vertically arranged on the top wall of the floor; the mounting plate is vertically arranged at the bottom of the test bench, and the push block and the mounting plate are vertically slidably fitted; a groove is provided on the plate surface where the mounting plate and the push block are vertically slidably fitted, the first conductive sheet is hinged to the inner bottom wall of the groove through a torsion spring, and the torsion spring always has the function of allowing the first conductive sheet to move away from the second conductive sheet. The sheet has a tendency to rotate sideways, the second conductive sheet is fixed on the inner wall of the groove, the first conductive sheet is electrically connected to the battery through a wire, and the second conductive sheet is electrically connected to the heat exchange component through the battery; wherein, when the floor surface is in a suspended state and the V-shaped guide wheel rolls normally in the stationary tunnel, the first conductive sheet is fitted with the second conductive sheet under the action of the pushing block; when the floor surface is in a ground-contact state and the V-shaped guide wheel stops rolling in the stationary tunnel, the first conductive sheet is separated from the second conductive sheet under the action of the torsion spring.

[0012] Optionally, an inclined guide surface is provided between the top wall and the side wall of the pushing block. When the floor panel is in a suspended state, the side wall surface of the pushing block abuts against the first conductive sheet to drive the first conductive sheet to adhere to the second conductive sheet; when the floor panel is in a ground-adhering state, the inclined guide surface is opposite to the first conductive sheet to leave a rotation gap between the inclined guide surface and the groove. Under the action of the torsion spring, the first conductive sheet rotates away from the second conductive sheet within the rotation gap to separate the first conductive sheet from the second conductive sheet.

[0013] Optionally, the heat exchange component includes a cold water tank, a water pump, a hose, a heat exchange rigid pipe and a water receiving tank, wherein the cold water tank is arranged in the test bench on one side of the V-shaped guide wheel, and the water receiving tank is arranged in the test bench on the other side of the V-shaped guide wheel; the water pump is arranged in the test bench, and the pump inlet end of the water pump is connected to the interior of the cold water tank; a rotating channel is opened through the axial center of the V-shaped guide wheel, the heat exchange rigid pipe is rotatably inserted in the rotating channel, and the length of the heat exchange rigid pipe is longer than the length of the rotating channel; a hose is provided at each end of the heat exchange rigid pipe, one hose is connected to the pump outlet end of the water pump, and the other hose is connected to the water receiving tank; the second conductive sheet is electrically connected to the water pump through a wire.

[0014] Optionally, the heat exchange rigid tube is configured to be made of copper material.

[0015] The technical solution adopted by the present invention can achieve the following beneficial effects: The present invention provides a test platform vehicle device. This device addresses the problems in the prior art where the V-shaped guide wheels of the platform vehicle are prone to heating during high-intensity rolling tests and lack an effective cooling device, which can easily lead to rapid guide wheel wear, unstable operation, and shortened service life. By constructing a multi-stage linked spiral lifting mechanism, an opening and closing assembly, and a heat exchange assembly, the device achieves a synergistic effect of state perception of the guide wheels and intelligent cooling control. The present invention disposes the spiral lifting mechanism at the bottom of the test bench and utilizes the suspended and grounded states of the lifting mechanism to indirectly control the conduction of the electrical contacts in the opening and closing assembly, thereby driving the flow and stop of cold water in the heat exchange assembly, thereby forming a guide wheel cooling solution that does not require manual intervention and has a certain degree of automatic control function. At the same time, a heat exchange hard pipe is disposed in the axial channel of the V-shaped guide wheel and is made of copper material. This significantly improves the heat exchange efficiency without affecting the rotation of the V-shaped guide wheel, which is beneficial to reducing the risk of overheating of the V-shaped guide wheel and enhancing the stability and safety of the platform vehicle during long-term operation. In summary, the present invention achieves an organic combination of structural design, cooling efficiency and operation control, which can extend the service life of the platform vehicle to a certain extent, improve the continuity and reliability of the test, and has significant engineering application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the state of the test bench in the station tunnel in the embodiment of the present application; Figure 2 is a partial cross-sectional view of the test bench in the embodiment of the present application; Figure 3 This is a partial cross-sectional view used to illustrate the spiral lifting mechanism in the embodiment of the present application; Figure 4 It is a front view of the test bench in the embodiment of the present application; Figure 5 yes Figure 4 Enlarged view of part A in .

[0018] In the picture: 100, test bench; 110, V-shaped guide wheel; 120, roller; 130, housing; 200, screw lifting mechanism; 210, drive assembly; 211, servo motor; 212, horizontal lead screw; 213, horizontal bevel gear; 220, lifting assembly; 221, vertical lead screw; 222, vertical bevel gear; 223, lifting screw; 224, flooring; 300, cooling mechanism; 310, heat exchange assembly ; 311. Cold water tank; 312. Water pump; 313. Hose; 314. Heat exchange pipe; 315. Water receiving tank; 320. Opening and closing assembly; 321. Battery; 322. Push block; 3221. Inclined guide surface; 323. Mounting plate; 3231. Groove; 324. First conductive sheet; 325. Torsion spring; 326. Second conductive sheet; 400. Limiting column; 410. Limiting groove; 500. Limiting block. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0020] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0021] The following is combined with Figures 1 to 5 , a test platform vehicle device provided in this application is described in detail through specific embodiments and application scenarios.

[0022] A test platform vehicle, combined with Figures 1 to 3The test bench 100 comprises a test bench 100, a spiral lifting mechanism 200, and a cooling mechanism 300. The test bench 100 is a square structure, with two sets of V-shaped guide wheels 110 and a plurality of rollers 120 disposed along its length. The V-shaped guide wheels 110 are rotatably mounted at the longitudinal centerline of the bottom of the test bench 100 and are designed to roll with the V-shaped guide rails within the stationary tunnel, guiding and positioning the platform vehicle. The rollers 120 are located near the spiral lifting mechanism 200 and are used to support the weight of the test bench 100 during movement. They also achieve rolling contact with the steel plate floor of the stationary tunnel, facilitating manual movement of the platform vehicle on a horizontal surface.

[0023] To ensure the high load-bearing capacity of the platform vehicle once it is in place, four or more spiral lift mechanisms 200 are installed at the bottom corners of the test bench 100. These mechanisms are mechanically controlled, allowing for vertical adjustment of the lift height and operating in two states: suspended and ground-level. The suspended state means the lift mechanism is not in contact with the ground, with the platform vehicle supported entirely by rollers 120. The ground-level state means the lift mechanism is lowered to a position supporting the ground, directly absorbing the load from the platform vehicle, enhancing overall stability and load-bearing performance.

[0024] Furthermore, a cooling mechanism 300 is provided between the V-shaped guide wheel 110 and the test bench 100. The cooling mechanism 300 can be air-cooled or liquid-cooled, and its starting conditions are: when the platform vehicle is moving, the spiral lifting mechanism 200 is in a suspended state, that is, the platform vehicle has not completed the support switching, and the V-shaped guide wheel 110 is in rolling contact with the track, the cooling mechanism 300 automatically operates to cool the V-shaped guide wheel 110 to avoid degradation or deformation of the guide wheel material performance due to long-term rolling friction; and when the platform vehicle is in place, the lifting mechanism is in a ground-contact state and the guide wheel is in a stationary state, the cooling mechanism 300 stops running to save energy and avoid unnecessary cooling operations.

[0025] This structure realizes the start and stop of the cooling function through the automatic linkage control of the lifting state, which simplifies the operation process to a certain extent, improves the convenience of use and the level of automation. In addition, the "ground-attached state" referred to in the embodiment is not limited to the lifting mechanism fully supporting the entire load, but can also be understood as the state in which the lifting mechanism is in contact with the ground and bears part or all of the load; and the "suspended state" is not limited to being completely suspended, but refers to a structural configuration in which the lifting mechanism is not in contact with the ground and is not in a supporting state. Therefore, the test platform vehicle device is beneficial to improving the operating efficiency and operational reliability of the platform vehicle in high-frequency wind tunnel test scenarios through the above-mentioned structural configuration while ensuring the guidance accuracy and mobility performance.

[0026] In some embodiments, combined Figures 1 to 3The spiral lifting mechanism 200 includes a driving assembly 210 and a lifting assembly 220, wherein the driving assembly 210 is connected to the lifting assembly 220 through a transmission structure, and is used to drive the lifting assembly 220 to realize the lifting function of the platform vehicle in the vertical direction. The driving assembly 210 preferably adopts a servo motor 211 as a power source, which is installed at the bottom of the test bench 100 and is connected to a coaxially arranged horizontal screw 212 through an output shaft. The horizontal screw 212 is horizontally passed through a hollow shell 130 installed at the bottom of the test bench 100. A vertical screw 221 is provided inside the shell 130. The vertical screw 221 is engaged with a horizontal bevel gear 213 on the horizontal screw 212 through a vertical bevel gear 222 coaxially mounted therewith. The horizontal screw 212 is driven to rotate by the servo motor 211, driving the bevel gear pair to engage, thereby realizing the rotation of the vertical screw 221. Vertical screw 221 has a threaded groove along its axial direction and is open at its lower end. This groove is threadedly engaged with a lifting screw 223. The lower end of lifting screw 223 extends from the bottom of housing 130, and its distal end is fixedly connected to floor 224. To achieve the lifting function and prevent angular displacement of lifting screw 223 as vertical screw 221 rotates, a limit assembly is provided within housing 130 to limit the rotation of lifting screw 223 as vertical screw 221 rotates.

[0027] In this way, when the vertical screw 221 rotates, the lifting screw 223 can make axial linear movement under the guidance of the thread groove, thereby driving the floor 224 to rise and fall, and finally realizing the lifting and lowering conversion operation of the platform vehicle. This structural design simplifies the traditional process of manually laying out the jacks to a certain extent, which is beneficial to improving the lifting efficiency and operational convenience of the platform vehicle. At the same time, the above-mentioned "limiting assembly" can adopt conventional limiting structures such as anti-rotation keys, guide grooves and sliders. The specific form can be flexibly selected according to the load-bearing and structural layout of the platform vehicle, and is not limited to a single implementation method in implementation. The "floor 224" is used to contact the ground to provide load-bearing support. Its size, shape and material can be set according to the actual load conditions, and it has good contact stability and load distribution capabilities. While meeting the heavy-load support requirements of the platform vehicle, the overall structure is also beneficial to improving structural reliability and the ability to adapt to various working conditions.

[0028] For example, the limiting assembly includes a limiting post 400, which is vertically disposed within the housing 130. The limiting post 400 defines a limiting slot 410 along its length. A limiting block 500 is provided on the outer wall of the lifting screw 223, and the limiting block 500 is slidably inserted into the limiting slot 410. The sliding engagement between the limiting block 500 and the limiting slot 410 prevents the lifting screw 223 from rotating, thereby allowing the lifting screw 223 to stably rise and fall in the vertical direction when the vertical screw 221 rotates.

[0029] Exemplarily, both upper and lower ends of the limiting groove 410 are sealed, so that the lifting screw 223 has a certain range of vertical lifting and lowering, and at the same time, the limiting block 500 is not easy to escape from the limiting groove 410.

[0030] In some embodiments, combined Figure 1 、 Figure 4 as well as Figure 5 The cooling mechanism 300 includes a heat exchange component 310 and an opening and closing component 320. The heat exchange component 310 is used to continuously cool the V-shaped guide wheel 110 of the platform vehicle during movement to improve its wear resistance and service life. The opening and closing component 320 is used to control the operation of the heat exchange component 310 according to the status of the platform vehicle. The heat exchange component 310 can be an air-cooled heat dissipation unit, which is installed near the circumference or upper area of ​​the V-shaped guide wheel 110. Its heat dissipation airflow is directed toward the surface of the V-shaped guide wheel 110 to enhance heat dissipation efficiency. A liquid cooling circulation module can also be selected, in which a small liquid pump drives the coolant to flow through the heat exchange channel provided around the guide wheel to remove heat.

[0031] When the platform vehicle is in motion, i.e., in a suspended position against the floor 224, the V-shaped guide wheel 110 rolls on the track, generating significant frictional heat. At this point, the opening and closing assembly 320 drives the heat exchange assembly 310 into operation, thereby preventing the V-shaped guide wheel 110 from overheating and causing material degradation or deformation, ensuring guidance accuracy and smooth movement. When the platform vehicle stops moving, i.e., in a ground-contact position against the floor 224, the spiral lift mechanism 200 bears the primary load, and the V-shaped guide wheel 110 ceases rotation. The opening and closing assembly 320 then controls the heat exchange assembly 310 to stop operating, allowing the V-shaped guide wheel 110 to naturally dissipate heat, avoiding energy waste and reducing system load or the risk of localized condensation caused by unnecessary cooling. In this embodiment, the "ground-contact 224" position is detected by detecting the support state using a limit switch, contact sensor, or strain gauge. The electrical connection between the "heat exchange assembly 310" and the "opening and closing assembly 320" can be logically determined and executed by a single-chip microcomputer or relay control system. Through the above-mentioned structural configuration, the cooling mechanism 300 can automatically start and stop the cooling system according to the status of the platform vehicle without manual intervention, which to a certain extent improves the intelligence level and ease of use of the device, and is suitable for wind tunnel platform vehicle working scenarios with frequent start and stop and long-term operation.

[0032] In some embodiments, combined Figure 1 、 Figure 4 as well as Figure 5The opening and closing assembly 320 includes a battery 321, a push block 322, a mounting plate 323, a first conductive plate 324, a torsion spring 325, and a second conductive plate 326. The battery 321 provides power to the heat exchange assembly 310, while the push block 322 triggers the switching of the conductive plates. The push block 322 is vertically mounted on the top wall of the floor 224 and moves vertically as the floor 224 moves up and down. The mounting plate 323 is fixed to the bottom of the test bench 100. The mounting plate 323, which slides against the push block 322, has a groove 3231 for mounting the first conductive plate 324 and the second conductive plate 326. The first conductive plate 324 is hinged to the bottom wall of the groove 3231 via a torsion spring 325. Its structural design ensures that it naturally rotates away from the second conductive plate 326 when no external force is applied. The second conductive plate 326 is fixed to the side wall of the groove 3231, positioned to contact the first conductive plate 324. In terms of electrical connection, the first conductive sheet 324 is connected to the battery 321 through a wire, and the second conductive sheet 326 is connected to the water pump 312 in the heat exchange component 310 through a wire, forming a controllable power supply circuit.

[0033] When the platform vehicle is in motion, that is, suspended in the air near the floor 224 and the V-shaped guide wheels 110 rolling on the track, the push block 322 moves upward, its sidewall contacting the first conductive sheet 324. As it slides vertically upward, it pushes the first conductive sheet 324 to rotate, overcoming the elastic force of the torsion spring 325, and making contact with the second conductive sheet 326. At this point, the current from the battery 321 is transmitted through the closed circuit to the water pump 312, thereby driving the heat exchange assembly 310.

[0034] Furthermore, the heat exchange assembly 310 includes a cold water tank 311, a water pump 312, a hose 313, a heat exchange rigid pipe 314, and a water receiving tank 315. The cold water tank 311 and the water receiving tank 315 are respectively arranged in the test bench 100, located on both sides of the V-shaped guide wheel 110, forming a complete cooling circuit. The water inlet of the water pump 312 is connected to the cold water tank 311, and the water outlet is connected to the inlet end of the heat exchange rigid pipe 314 via a hose 313. The heat exchange rigid pipe 314 is rotatably inserted into the rotating channel opened in the axial center of the V-shaped guide wheel 110, and is connected to another hose 313 at the outlet end, which in turn leads to the water receiving tank 315. The hose 313 is made of a flexible material to facilitate maintaining the connection stability when the platform vehicle vibrates or the guide wheel rotates. The heat exchange tube 314 is longer than the rotating channel and has a certain sliding margin, thereby forming a cooling path passing along the axis of the guide wheel without interfering with the free rotation of the guide wheel. When the cold water flows in this path, it can exchange heat with the inner wall of the V-shaped guide wheel 110, which is beneficial to reduce the heat accumulated in the guide wheel under high-frequency rolling to a certain extent, thereby delaying the accuracy impact and loss risk caused by thermal expansion or material performance degradation.

[0035] When the platform vehicle completes its movement and enters the test state, with the floor plate 224 touching the ground and the V-shaped guide wheels 110 stopping rolling, the floor plate 224 and the push block 322 move downward synchronously. The inclined guide surface 3221 of the push block 322 now faces the first conductive sheet 324. At this point, the push block 322 no longer exerts a lateral force on the first conductive sheet 324. Under the force of the torsion spring 325, the first conductive sheet 324 rotates away from the second conductive sheet 326, thereby disconnecting the conductive path. The battery 321 stops supplying power to the water pump 312, the heat exchange assembly 310 ceases operation, and the flow of cold water ceases. At this point, due to the cessation of the guide wheel rotation, the heat generated gradually decreases, and natural heat dissipation can meet the cooling requirements, eliminating the need for active cooling. Furthermore, a rotational gap is created between the push block 322 and the first conductive sheet 324, through the cooperation of the inclined guide surface 3221 and the groove 3231. This ensures reliable disconnection between the conductive sheets when in the floor-touched state, which, to a certain extent, improves the stability of the device's electronic control response and the service life of the cooling system. The overall structure realizes the function of linking the operating status of the platform vehicle with the cooling demand of the V-shaped guide wheel 110, so that the cooling is actively started when the guide wheel is in a high-temperature state, and the power is automatically cut off after it stops working, forming a good energy-saving and cooling mechanism, which is suitable for wind tunnel test environments with multiple starts and stops or long-term operation.

[0036] Exemplarily, the heat exchange rigid tube 314 is configured to be made of copper material. Copper is widely used in the field of heat exchange due to its excellent thermal conductivity. In this embodiment, the heat exchange rigid tube 314 is arranged in the axial center channel of the V-shaped guide wheel 110, and plays a role of coupling with the cold water flow path during the rolling process of the V-shaped guide wheel 110. The thermal conductivity of copper material is relatively high, which is beneficial to improving the heat exchange efficiency. When cold water flows through the copper heat exchange rigid tube 314, it can absorb the heat accumulated inside the V-shaped guide wheel 110 more quickly to a certain extent, thereby achieving more effective heat transfer. At the same time, since the heat exchange rigid tube 314 needs to maintain a certain degree of insertion freedom when the V-shaped guide wheel 110 rotates, its structure should have a certain strength and deformation resistance. The toughness and stability of copper material are relatively good, and can adapt to the slight deformation of the device caused by vibration, temperature difference or mechanical stress during the test, reducing the risk of breakage or dislocation of the heat exchange rigid tube 314. Furthermore, copper is relatively easy to process and shape, allowing for precise control of the wall thickness and length of the heat exchange tube 314 during the manufacturing process, which in turn benefits the stability of subsequent assembly within the guide wheel's rotating channel. Therefore, using copper to construct the heat exchange tube 314 not only improves heat exchange efficiency but also enhances the reliability and adaptability of the overall structure, making it suitable for the dynamic cooling needs of the platform vehicle device in wind tunnels or other high-heat environments.

[0037] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0038] Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in reverse order depending on the functions involved. For example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Furthermore, features described with reference to certain examples may be combined in other examples.

[0039] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A test platform vehicle device, characterized in that: include: The test bench (100) has a V-shaped guide wheel (110) and a roller (120) rotatably provided at its bottom, wherein the V-shaped guide wheel (110) rolls on a track in the stationary tunnel, and the roller (120) rolls in cooperation with the ground in the stationary tunnel; A spiral lifting mechanism (200) is provided at a bottom corner of the test bench (100), the spiral lifting mechanism (200) can be lifted and lowered in a vertical direction, and the spiral lifting mechanism (200) has a switchable suspended state and a ground-attached state; The cooling mechanism (300) is provided between the test bench (100) and the V-shaped guide wheel (110) and is used to cool the V-shaped guide wheel (110) when the V-shaped guide wheel (110) rolls on the track; wherein, When the spiral lifting mechanism (200) is in a suspended state and the V-shaped guide wheel (110) rolls normally in the stationary tunnel, the cooling mechanism (300) is activated and cools the V-shaped guide wheel (110); When the spiral lifting mechanism (200) is in a ground-contact state and the V-shaped guide wheel (110) stops rolling in the stationary tunnel, the cooling mechanism (300) automatically stops cooling the V-shaped guide wheel (110).

2. A test platform vehicle device according to claim 1, characterized in that: The spiral lifting mechanism (200) comprises a driving assembly (210) and a lifting assembly (220), wherein the driving assembly (210) is in transmission connection with the lifting assembly (220), and the lifting assembly (220) is used to achieve lifting in a vertical direction under the action of the driving assembly (210).

3. A test platform vehicle device according to claim 2, characterized in that: The driving assembly (210) includes a servo motor (211), a horizontal lead screw (212), and a horizontal bevel gear (213); the lifting assembly (220) includes a vertical lead screw (221), a vertical bevel gear (222), a lifting screw (223), and a floor surface (224), wherein: The servo motor (211) is arranged at the bottom of the test bench (100), the horizontal lead screw (212) is coaxially arranged on the output shaft of the servo motor (211), and a hollow housing (130) is provided at the bottom of the test bench (100), and the horizontal lead screw (212) is rotatably inserted into the housing (130); The vertical lead screw (221) is rotatably disposed in the housing (130), the vertical bevel gear (222) is coaxially disposed on the vertical lead screw (221), and the horizontal bevel gear (213) is meshed with the vertical bevel gear (222); A thread groove is coaxially provided inside the vertical lead screw (221), the lower end of the thread groove is open, the lifting screw (223) is threadedly inserted into the thread groove, and the lower end of the lifting screw (223) extends out of the housing (130), and the floor plate (224) is provided at the lower end of the lifting screw (223); A limiting assembly is also provided in the housing (130), and the limiting assembly is used to limit the rotation of the lifting screw (223) when the vertical lead screw (221) rotates.

4. A test platform vehicle device according to claim 3, characterized in that: The limiting assembly comprises a limiting column (400), wherein the limiting column (400) is vertically arranged in the housing (130), and the limiting column (400) is provided with a limiting groove (410) along its own length direction; a limiting block (500) is provided on the outer wall of the lifting screw (223), and the limiting block (500) is slidably inserted in the limiting groove (410).

5. A test platform vehicle device according to claim 4, characterized in that: The upper and lower ends of the limiting groove (410) are both sealed.

6. The test platform vehicle device according to claim 3, characterized in that: The cooling mechanism (300) comprises a heat exchange component (310) and an opening and closing component (320), wherein the opening and closing component (320) is electrically connected to the heat exchange component (310), wherein: When the floor surface (224) is in a suspended state and the V-shaped guide wheel (110) is rolling normally in the stationary tunnel, the opening and closing component (320) is in an open state, so that the heat exchange component (310) operates and continuously removes the heat generated by the rolling of the V-shaped guide wheel (110); When the floor surface (224) is in a ground contact state and the V-shaped guide wheel (110) stops rolling in the stationary tunnel, the opening and closing component (320) is in a closed state, so that the heat exchange component (310) stops running. At this time, the V-shaped guide wheel (110) is left to cool down on its own.

7. The test platform vehicle device according to claim 6, characterized in that: The opening and closing assembly (320) includes a battery (321), a push block (322), a mounting plate (323), a first conductive sheet (324), a torsion spring (325), and a second conductive sheet (326), wherein: The battery (321) is installed in the test bench (100), and the pushing block (322) is vertically arranged on the top wall of the floor (224); The mounting plate (323) is vertically arranged at the bottom of the test bench (100), and the pushing block (322) is vertically slidably fitted with the mounting plate (323); A groove (3231) is provided on the plate surface where the mounting plate (323) and the pushing block (322) are vertically slidably fitted. The first conductive sheet (324) is hingedly mounted on the inner bottom wall of the groove (3231) via a torsion spring (325), and the torsion spring (325) always has a tendency to rotate the first conductive sheet (324) away from the second conductive sheet (326). The second conductive sheet (326) is fixedly mounted on the inner side wall of the groove (3231). The first conductive sheet (324) is electrically connected to the battery (321) via a wire, and the second conductive sheet (326) is electrically connected to the heat exchange component (310) via the battery (321). When the floor surface (224) is in a suspended state and the V-shaped guide wheel (110) rolls normally in the stationary tunnel, the first conductive sheet (324) is in contact with the second conductive sheet (326) under the action of the pushing block (322); When the floor surface (224) is in a ground contact state and the V-shaped guide wheel (110) stops rolling in the stationary tunnel, the first conductive sheet (324) is separated from the second conductive sheet (326) under the action of the torsion spring (325).

8. The test platform vehicle device according to claim 7, characterized in that: An inclined guide surface (3221) is provided between the top wall and the side wall of the pushing block (322); when the contact plate (224) is in a suspended state, the side wall surface of the pushing block (322) abuts against the first conductive sheet (324) to drive the first conductive sheet (324) to contact the second conductive sheet (326); When the floor surface (224) is in a ground-attached state, the inclined guide surface (3221) is directly opposite to the first conductive sheet (324), so that a rotation gap is left between the inclined guide surface (3221) and the groove (3231). Under the action of the torsion spring (325), the first conductive sheet (324) rotates in the rotation gap toward a side away from the second conductive sheet (326), so that the first conductive sheet (324) is separated from the second conductive sheet (326).

9. The test platform vehicle device according to claim 7, characterized in that: The heat exchange assembly (310) includes a cold water tank (311), a water pump (312), a hose (313), a heat exchange hard pipe (314), and a water receiving tank (315), wherein: The cold water tank (311) is arranged in the test bench (100) on one side of the V-shaped guide wheel (110), and the water receiving tank (315) is arranged in the test bench (100) on the other side of the V-shaped guide wheel (110); The water pump (312) is arranged in the test bench (100), and the pump inlet end of the water pump (312) is connected to the interior of the cold water tank (311); A rotating channel is provided through the axial center of the V-shaped guide wheel (110), the heat exchange hard pipe (314) is rotatably inserted into the rotating channel, and the length of the heat exchange hard pipe (314) is longer than the length of the rotating channel; The hose (313) is connected to each end of the heat exchange hard pipe (314), one hose (313) is connected to the pump outlet end of the water pump (312), and the other hose (313) is connected to the water receiving box (315); The second conductive sheet (326) is electrically connected to the water pump (312) via a wire.

10. The test platform vehicle device according to claim 9, characterized in that: The heat exchange hard tube (314) is configured to be made of copper material.

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