Mobile propeller test bench with flow guiding and heat dissipation

Abstract

The utility model discloses a mobile propeller test bench with flow guide and heat dissipation, including adjustable height's flow guide and heat dissipation unit, shock attenuation fixed unit, wheel shock attenuation unit, rack unit, rack unit sets up the steel frame structure, and the middle part of frame structure sets up shock attenuation fixed unit fixed mounting engine, flow guide and heat dissipation unit sets up the upper portion of engine, and wheel shock attenuation unit sets up and forms rotary hinge structure on water platform frame I and stand I of setting up in the bottom of rack unit, flow guide and heat dissipation cover is fixedly connected with height adjusting mechanism through the flow guide mounting plate of right -hand end, and under the drive of servo motor can slide up and down and adjust height. Mobile propeller test bench with flow guide and heat dissipation guides the airflow of propeller through the upper portion of engine flow guide and heat dissipation cover and carries out heat dissipation to the rear row cylinder body, through shock attenuation fixed unit and adjustable shock absorber in the hinge structure of wheel and rack unit, alleviates the vibration when engine operation, and conveniently and flexibly removes, improves the life of test rack equipment.

Description

Technical Field

[0001] This utility model belongs to the technical field of aero-engine propeller testing equipment, and in particular relates to a mobile propeller test stand with airflow cooling. Background Technology

[0002] Currently, bench testing is an indispensable part of the research and development of large propellers. Test benches are core infrastructure for ensuring the accuracy of test data and the safe operation of equipment; their structural design and functional integrity directly affect testing efficiency and engine safety. Currently, mainstream propeller engine test benches on the market suffer from two major problems in practical applications, making it difficult to meet the requirements of efficient and safe testing. First, they lack a cooling module for the engine cylinder block. Normally, when a propeller engine is running, the cylinder block generates a large amount of heat due to continuous work. However, during testing, the engine is in a static state, relying solely on the compressed air from the rotating propeller for heat dissipation. This air, after passing through the first row of cylinders, has already reached a higher temperature, reducing its cooling efficiency for the rear cylinders. Prolonged operation may lead to engine overheating and damage. Second, they are limited in their operating environment and lack shock absorption design: Firstly, existing test benches mostly adopt a fixed, integrated structure, only allowing operation in pre-defined indoor or outdoor environments, reducing the flexibility of testing operations. Secondly, the test frame lacks an effective shock absorption mechanism, and the vibrations generated during engine operation are directly transmitted to the test frame itself, accelerating the wear and aging of the test frame structural components. It also has a certain impact on the engine, shortening the service life of the equipment. On the other hand, vibration interference may affect sensor data acquisition and affect the reliability of test results. Summary of the Invention

[0003] This invention addresses the shortcomings and defects of existing propeller engine testing technologies by providing a mobile propeller test bench with airflow-guided heat dissipation. By incorporating a height-adjustable airflow-guided heat dissipation shroud, shock-absorbing wheels, and a shock-absorbing fixing structure, the invention solves the problems of engine heat dissipation and shock absorption during testing, facilitates mobility, improves the flexibility of testing operations, and enables applications in multiple scenarios.

[0004] The technical solution adopted in this utility model is as follows: a mobile propeller test bench with airflow guiding and heat dissipation, including an adjustable airflow guiding and heat dissipation unit, a shock absorption and fixing unit, a wheel shock absorption unit, and a test bench unit. The test bench unit is configured as a steel frame structure, and the shock absorption and fixing unit is set in the middle of the frame structure to fix the engine. The airflow guiding and heat dissipation unit is located on the upper part of the engine and is fixed to the upper end of the column II of the test bench unit. The wheel shock absorption unit is set on the horizontal platform frame I and the column I at the bottom of the test bench unit and forms a rotating hinge structure with the horizontal platform frame I and the column I. Furthermore, the platform unit is configured as a steel frame structure, including platform frame I, platform frame II, column I, column II, steering wheels, handles, and limiting bolts. Platform frame I is located at the lowest level; column II is vertically fixed to the middle of platform frame I, and a heat dissipation unit is fixed to the upper end of column II; column I is vertically fixed to the left end of platform frame I; platform frame II is fixed to the middle of column II and above column I, and a shock absorption unit and an engine are fixedly installed on platform frame II; the steering wheels are installed inside the right end of platform frame I; the handles are installed on the right end of platform frame I; and the limiting bolts are located on both sides of platform frame I.

[0005] Furthermore, the heat dissipation unit includes a heat dissipation shroud, a heat dissipation mounting plate, and a height adjustment mechanism; the heat dissipation shroud is fixedly connected to the heat dissipation mounting plate at the right end, and the heat dissipation mounting plate is fixedly connected to the height adjustment mechanism at the right end.

[0006] Furthermore, the left end of the heat dissipation shroud is provided with a downward-opening arc structure; the right end of the heat dissipation shroud is provided with a fixed steel plate, which is fixed by welding through a support column in the middle.

[0007] Furthermore, the fairing is preferably made of 4mm thick 45 steel plate.

[0008] Furthermore, the height adjustment mechanism includes a servo motor, a motor mounting base, a motor mounting base mounting plate, a trapezoidal lead screw, a nut seat, a linear guide mounting plate, and a lead screw fixing seat. The servo motor is installed in the upper middle part of the height adjustment mechanism and is fixed to the motor mounting base. A trapezoidal lead screw is installed below the motor mounting base, and a lead screw fixing seat is installed at the lower end of the trapezoidal lead screw. A nut seat is fitted on the trapezoidal lead screw. The motor mounting base and the lead screw fixing seat are fixedly connected to the motor mounting plate. Furthermore, the nut seat is fixedly connected to the middle of the flow guide mounting plate. Linear guide mounting plates are symmetrically arranged on both sides of the motor mounting plate. Linear guides are fixedly connected to the linear guide mounting plates, and sliders are installed on the linear guides. The sliders are fixedly fixed to pads, and the pads on both sides are fixedly connected to both ends of the flow guide mounting plate. Furthermore, the height adjustment mechanism is fixedly connected to column II.

[0009] Furthermore, the vibration damping fixing unit includes a fixing plate, a vibration damping plate, a front bracket, vibration damping rubber, and a rear bracket. The fixing plate is installed on the left-middle left part of the platform frame II. Furthermore, an "arch"-shaped vibration damping plate is installed on the fixing plate, and vibration damping rubber is installed at both ends of the vibration damping plate. The front bracket is installed on the vibration damping plate at the left end. The rear bracket is installed on the vibration damping plate in the middle part.

[0010] Furthermore, the damping rubber is preferably an HN general-purpose rubber split-type damper.

[0011] Furthermore, the wheel damping unit is located at the left end of the platform frame I, and includes a shock absorber, a shock absorber connector, a connecting rod, and a wheel. One end of the connecting rod is fixedly connected to the wheel, and the other end of the connecting rod is fixedly connected to the platform frame I in the diametrical direction by bolts. The connecting rod and the platform frame I form a rotatable hinge structure. Furthermore, two through holes are provided in the diametrical direction near the end of the connecting rod close to the wheel, and the shock absorber connector is fixedly connected by bolts in the radial through holes of the connecting rod. The lower end of the shock absorber is fixedly connected to the shock absorber connector by bolts, forming a hinge structure. Furthermore, the upper end of the shock absorber is fixedly connected to the column I by bolts, forming a hinge structure.

[0012] Furthermore, the wheels are equipped with tubeless tires, and each wheel can withstand a weight of 750 kg or more.

[0013] Furthermore, the shock absorber is a shock absorber with adjustable stiffness.

[0014] The beneficial effects of this utility model are as follows: 1. The mobile propeller test bench with airflow guiding and heat dissipation of this utility model is equipped with an engine airflow guiding and heat dissipation unit. The airflow of the propeller is guided to dissipate heat from the rear cylinder block through the airflow guiding and heat dissipation shroud on the upper part of the engine, thereby reducing the temperature of the rear cylinder block of the engine; 2. The mobile propeller test bench with airflow guiding and heat dissipation of this utility model is equipped with a wheel shock absorption unit. Through the hinge structure between the wheel and the test bench unit, and the use of a shock absorber with adjustable stiffness, the mobility of the test bench unit and the shock absorption and buffering effect are effectively solved; 3. The mobile propeller test bench with airflow guiding and heat dissipation of this utility model is equipped with a shock absorption and fixing unit in the test bench unit, which solves the problem of fixed installation of the engine, effectively reduces the vibration impact on the test bench equipment during engine operation, avoids vibration interference with sensor data acquisition, and also improves the service life of the test bench equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a mobile propeller test bench with airflow-guided heat dissipation.

[0016] Figure 2 This is a schematic diagram of the main structure of a mobile propeller test bench with airflow-guided heat dissipation.

[0017] Figure 3 This is a schematic diagram of the heat dissipation unit of a mobile propeller test bench with heat dissipation and airflow guiding.

[0018] Figure 4 This is a schematic diagram of the structure of a vibration damping unit for a mobile propeller test bench with airflow-guided heat dissipation.

[0019] Figure 5This is a schematic diagram of the structure of a vibration damping unit for a mobile propeller test bench with airflow-guided heat dissipation.

[0020] The diagram is labeled as follows: 100 is the test propeller unit, 101 is the propeller, 102 is the engine, 200 is the test bench unit, 201 is platform frame I, 202 is platform frame II, 203 is column I, 204 is column II, 205 is the steering wheel, 206 is the handle, 207 is the limit bolt, 300 is the airflow cooling unit, 301 is the airflow cooling shroud, 302 is the airflow mounting plate, 303 is the pad, 304 is the slider, 305 is the linear guide, 306 is the servo motor, 3 07 is the motor mounting bracket, 308 is the motor mounting bracket mounting plate, 309 is the trapezoidal lead screw, 310 is the linear guide mounting plate, 311 is the nut seat, 312 is the lead screw mounting bracket, 400 is the wheel damping unit, 401 is the shock absorber, 402 is the shock absorber connector, 403 is the connecting rod, 404 is the wheel, 500 is the shock absorber fixing unit, 501 is the fixing plate, 502 is the shock absorber plate, 503 is the front bracket, 504 is the shock absorber rubber, 505 is the rear bracket, and 600 is the electric tractor. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "front", "rear", "up", "down", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to simplify the description of this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figure 1-5As shown, this utility model discloses a mobile propeller test bench with airflow guiding and heat dissipation for testing the engine 102 of a test propeller unit 100. It includes an adjustable airflow guiding and heat dissipation unit 300, a shock-absorbing and fixing unit 500, a wheel shock-absorbing unit 400, and a test bench unit 200. The test bench unit 200 is a steel frame structure, with the shock-absorbing and fixing unit 500 fixing the engine 102 in the middle of the frame structure. The airflow guiding and heat dissipation unit 300 is located on the upper part of the engine 102. The 00 is fixed on the upper end of the column II 204 of the test bench unit 200. Through the airflow cooling unit 300, it changes the airflow direction of the propeller 101 and reduces the temperature rise of the rear cylinder block of the engine 102 during the test. The wheel shock absorption unit 400 is installed on the bottom platform frame I 201 and column I 203 of the test bench unit 200 and forms a rotating hinge structure with the platform frame I 201 and column I 203, which reduces the vibration of the engine 102 on the test bench unit 200 during the test.

[0025] The platform unit 200 is a steel frame structure, including a platform frame I 201, a platform frame II 202, columns I 203 and II 204, steering wheels 205, handles 206, and limiting bolts 207. The platform frame I 201 is located at the lowest level and serves as the main frame support. Column II 204 is vertically fixed to the middle of the platform frame I 201, and a heat dissipation unit 300 is fixed to the upper end of column II 204, serving to fix and support the heat dissipation unit 300. Column I 203 is vertically fixed to the left end of the platform frame I 201, serving to fix and support the platform frame II 202. The platform frame II 202 is fixed to the middle of column II 204 and to the upper end of column I 204. At the upper end of 203, a shock-absorbing fixing unit 500 and an engine 102 are fixedly installed on the platform frame II 202. The engine 102 of the test propeller is fixedly installed on the platform frame II 202 in the middle of the test unit 200 through the shock-absorbing fixing unit 500, which reduces the vibration of the engine 102 during the test. The steering wheel 205 is installed inside the right end of the platform frame I 201, which serves to adjust the steering of the test unit 500. The handle 206 is installed on the right end of the platform frame I 201, which facilitates the movement of the test unit 500. Furthermore, limit bolts 207 are set on both sides of the platform frame I 201. The movement of the test unit can be restricted by the raising and lowering of the limit bolts 207 to contact the ground.

[0026] The airflow cooling unit 300 includes an airflow cooling shroud 301, an airflow mounting plate 302, and a height adjustment mechanism. The height adjustment mechanism adjusts the distance between the engine 102 and the airflow cooling shroud 301 to match the height of the corresponding engine 102 cylinder block. The airflow cooling shroud 301 is fixedly connected to the airflow mounting plate 301 at the right end, and the airflow mounting plate 302 is fixedly connected to the height adjustment mechanism at the right end. The height adjustment mechanism drives the airflow mounting plate 302 to move up and down, thereby driving the airflow cooling shroud 301 to move up and down to adjust the distance between it and the engine 102.

[0027] Furthermore, the left end of the airflow guide shroud 301 is provided with a downward-opening curved arc structure airflow guide shroud. The arc structure airflow guide shroud plays the role of adjusting and changing the airflow direction. When the propeller 101 rotates, the air is compressed and moves backward. The downward-opening arc structure of the airflow guide shroud 301 guides the high-speed airflow at high altitude to the rear engine cylinder block, thereby increasing the heat dissipation efficiency of the rear cylinder block.

[0028] Furthermore, a fixing steel plate is provided at the right end of the heat dissipation shroud 301. The fixing steel plate and the heat dissipation shroud are fixed together by a support column, which reduces the weight of the heat dissipation shroud 301 itself.

[0029] Furthermore, the fairing is preferably made of 45 steel plate with a thickness of 4mm, which satisfies the strength requirements while reducing processing costs.

[0030] Furthermore, the height adjustment mechanism includes a servo motor 306, a motor mounting base 307, a motor mounting base plate 308, a trapezoidal lead screw 309, a nut seat 311, a linear guide mounting plate 310, and a lead screw fixing seat 312. The servo motor 306 is mounted in the upper middle part of the height adjustment mechanism and is fixed on the motor mounting base 307. The trapezoidal lead screw 309 is mounted under the servo motor base 307, and the lead screw fixing seat 312 is mounted at the lower end of the trapezoidal lead screw 309. The upper part is fitted with a nut seat 311, and the motor mounting base 307 and the lead screw mounting base 312 are fixedly connected to the motor mounting base mounting plate 308. The trapezoidal lead screw 309 is vertically fixed by the motor mounting base 307 and the lead screw mounting base 312. The nut seat 311 moves up and down under the rotation of the trapezoidal thread on the outer surface of the trapezoidal lead screw 309. Furthermore, the nut seat 311 is fixedly connected to the middle part of the guide mounting plate 302. The motor mounting base mounting plate 308 is symmetrically provided with linear guide mounting plates 310 on both sides. A fixed linear guide 305 is provided, and a slider 304 is mounted on the linear guide 305. The slider 304 is fixed on a pad 303. The pads 303 on both sides are fixedly connected to both ends of the guide plate 302. The sliders 304 on both sides move up and down on the symmetrical linear guide 305 to balance and stabilize the height adjustment mechanism. Furthermore, the height adjustment mechanism is fixedly connected to the column II 204. A servo motor 306 drives a trapezoidal lead screw 309 to rotate, which in turn drives the nut seat 311 to move up and down on the trapezoidal lead screw 309. The sliders 304 on both sides slide up and down on the rail 305. The guide plate 302, which is fixedly connected to the nut seat 311 and the slider 304, drives the guide heat sink 301 to move up and down, adjusting the height of the guide heat sink 301 to better match the height of the corresponding engine 102 cylinder block. When the propeller 101 rotates, the air is compressed and moves backward. The guide sink guides the high-speed airflow at the top to the rear cylinder block of the engine 102, thereby increasing the heat dissipation efficiency of the rear cylinder block. At the same time, the heat dissipation of the front cylinder block is not affected.

[0031] The vibration damping fixing unit 500 includes a fixing plate 501, a vibration damping plate 502, a front bracket 503, vibration damping rubber 504, and a rear bracket 505. The fixing plate 501 is installed on the left side of the platform frame II 202. Furthermore, an "arch"-shaped vibration damping plate 502 is installed on the fixing plate, and vibration damping rubber 504 is installed at both ends of the vibration damping plate 502 to provide vibration damping when in contact with the fixed engine. The front bracket 503 is installed on the left-side vibration damping plate 502 and fixes the front end of the engine 102 to the vibration damping plate. The rear bracket 505 is installed on the middle vibration damping plate 502 and fixes the rear end of the engine 102 to the vibration damping plate 502.

[0032] Furthermore, the damping rubber 504 is preferably an HN general-purpose rubber split-type damper, which can withstand axial and radial loads and effectively perform damping.

[0033] The wheel damping unit 400 is located at the left end of the platform frame I, and includes a shock absorber 401, a shock absorber connector 402, a connecting rod 403, and a wheel 404. One end of the connecting rod 403 is fixedly connected to the wheel 404, and the other end of the connecting rod 403 is fixedly connected to the platform frame I 201 in the diametrical direction by bolts. The connecting rod 403 and the platform frame I 201 form a rotatable hinge structure. Furthermore, two through holes are provided in the diametrical direction near the end of the connecting rod 403 close to the wheel 404, and the shock absorber connector 402 is fixedly connected by bolts in the radial through holes of the connecting rod 403. The lower end of the shock absorber 401 is fixedly connected to the shock absorber connector 402 by bolts, forming a hinge structure. Furthermore, the upper end of the shock absorber 401 is fixedly connected to the column I 203 by bolts, forming a hinge structure.

[0034] Furthermore, the wheel 404 is equipped with a tubeless tire, and a single wheel can withstand a weight of 750 kg, which can support a relatively heavy engine.

[0035] Furthermore, the shock absorber 401 is a stiffness-adjustable shock absorber, which adjusts the damping force according to the engine condition to play a buffering role.

[0036] Working principle: 1. The height of the airflow cooling shroud 301 is adjusted by moving the slider 304 driven by the servo motor 306 to match the height of the corresponding engine 102 cylinder block, ensuring that airflow can be guided to the rear cylinder block while the cooling of the front cylinder block is not affected; 2. The movable wheel 404 is set at the bottom of the test bench unit 200, and an adjustable shock absorber 401 is set in the hinge structure that fixes the wheel 404 to the test bench unit 200. The damping force is adjusted according to the condition of the engine 102 to effectively reduce the vibration and impact during the operation of the engine 102; furthermore, when the engine 102 is fixed to the test bench unit 200, a shock-absorbing fixing unit 500 is set to play a role in shock absorption and buffering.

[0037] Furthermore, the test bench equipment can be installed indoors or outdoors according to testing needs, and can be moved manually or by electric tractor, thus improving the flexibility of the test bench equipment.

[0038] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Various changes and modifications can be made without departing from the scope and spirit of the above utility model patent. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of this utility model shall fall within the scope of the technical solution of this utility model.

[0039] To facilitate understanding by those skilled in the art of the improvements of this utility model compared to the prior art, some of the drawings and descriptions of this utility model have been simplified, and for clarity, some other elements have been omitted from this utility model document. Those skilled in the art should realize that these omitted elements also constitute the content of this utility model.

Claims

1. A mobile propeller test bench with airflow guiding and heat dissipation, comprising an adjustable airflow guiding and heat dissipation unit, a shock absorption and fixing unit, a wheel shock absorption unit, and a test bench unit, characterized in that: The test bench unit is configured as a steel frame structure, and a shock-absorbing and fixing unit is set in the middle of the frame structure to fix the engine; the airflow cooling unit is set on the upper part of the engine and is fixed on the upper end of the column II of the test bench unit; the wheel shock-absorbing unit is set on the platform frame I and column I at the bottom of the test bench unit and forms a rotating hinge structure with the platform frame I and column I. Furthermore, the platform unit is configured as a steel frame structure, including platform frame I, platform frame II, column I, column II, steering wheels, handles, and limiting bolts. Platform frame I is located at the lowest level; column II is vertically fixed to the middle of platform frame I, and a heat dissipation unit is fixed to the upper end of column II; column I is vertically fixed to the left end of platform frame I; platform frame II is fixed to the middle of column II and above column I, and a shock absorption unit and an engine are fixedly installed on platform frame II; the steering wheels are installed inside the right end of platform frame I; the handles are installed on the right end of platform frame I; and the limiting bolts are located on both sides of platform frame I.

2. The mobile propeller test stand with airflow guiding and heat dissipation according to claim 1, characterized in that: The heat dissipation unit includes a heat dissipation shroud, a heat dissipation mounting plate, and a height adjustment mechanism; the heat dissipation shroud is fixedly connected to the heat dissipation mounting plate at the right end, and the heat dissipation mounting plate is fixedly connected to the height adjustment mechanism at the right end.

3. A mobile propeller test stand with airflow-guiding heat dissipation according to claim 2, characterized in that: The left end of the heat dissipation shroud is provided with a downward-opening curved arc structure; the right end of the heat dissipation shroud is provided with a fixed steel plate, which is fixed by welding through a support column in the middle.

4. A mobile propeller test stand with airflow guiding and heat dissipation according to claim 3, characterized in that: The fairing is made of 4mm thick 45 steel plate.

5. A mobile propeller test stand with airflow guiding and heat dissipation according to claim 2, characterized in that: The height adjustment mechanism includes a servo motor, a motor mounting base, a motor mounting base mounting plate, a trapezoidal lead screw, a nut seat, a linear guide mounting plate, and a lead screw fixing seat. The servo motor is installed in the upper middle part of the height adjustment mechanism and is fixed to the motor mounting base. A trapezoidal lead screw is installed below the motor mounting base, and a lead screw fixing seat is installed at the lower end of the trapezoidal lead screw. A nut seat is fitted on the trapezoidal lead screw. The motor mounting base and the lead screw fixing seat are fixedly connected to the motor mounting plate. Further, the nut seat is fixedly connected to the middle of the guide mounting plate. Linear guide mounting plates are symmetrically arranged on both sides of the motor mounting plate. Linear guides are fixedly connected to the linear guide mounting plates, and sliders are installed on the linear guides. The sliders are fixed to pads, and the pads on both sides are fixedly connected to both ends of the guide mounting plate. Further, the height adjustment mechanism is fixedly connected to column II.

6. A mobile propeller test stand with airflow guiding and heat dissipation according to claim 1, characterized in that: The vibration damping fixing unit includes a fixing plate, a vibration damping plate, a front bracket, vibration damping rubber, and a rear bracket. The fixing plate is installed on the left end of the horizontal platform frame. Furthermore, an "arch"-shaped vibration damping plate is installed on the fixing plate, and vibration damping rubber is installed at both ends of the vibration damping plate. The front bracket is installed on the vibration damping plate at the left end. The rear bracket is installed on the vibration damping plate at the right end.

7. A mobile propeller test stand with airflow guiding and heat dissipation according to claim 6, characterized in that: The damping rubber is an HN general-purpose rubber split-type damper.

8. A mobile propeller test stand with airflow guiding and heat dissipation according to claim 1, characterized in that: The wheel damping unit is located at the left end of the platform frame I and includes a shock absorber, a shock absorber connector, a connecting rod, and a wheel. One end of the connecting rod is fixedly connected to the wheel, and the other end of the connecting rod is fixedly connected to the platform frame I in the diametrical direction by bolts. The connecting rod and the platform frame I form a rotatable hinge structure. Furthermore, two through holes are provided in the diametrical direction near the end of the connecting rod close to the wheel, and the shock absorber connector is fixedly connected by bolts in the radial through holes of the connecting rod. The lower end of the shock absorber is fixedly connected to the shock absorber connector by bolts, forming a hinge structure. Furthermore, the upper end of the shock absorber is fixedly connected to the column I by bolts, forming a hinge structure.

9. A mobile propeller test stand with airflow guiding and heat dissipation according to claim 8, characterized in that: The wheels are tubeless, and each wheel can withstand a weight of 750 kg or more.

10. A mobile propeller test stand with airflow-guiding heat dissipation according to claim 8, characterized in that: The shock absorber is a shock absorber with adjustable stiffness.

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