Structural strength testing machine

Abstract

The utility model relates to the technical field of unmanned aerial vehicle detection, in particular to a structural strength testing machine which comprises a box body, a cavity is formed in the box body, a partition plate is arranged in the cavity and divides the cavity into an upper cavity body and a lower cavity body from top to bottom, a universal ball is arranged in the center of the partition plate, and a connecting rod capable of rotating along with the universal ball is arranged on the universal ball. A plate body is arranged on the connecting rod, a detection motor is arranged on the plate body, a blade to be detected is arranged on an output shaft of the detection motor, an adjusting assembly used for controlling the connecting rod to conduct angle adjustment is arranged on the partition plate, and a sand discharging assembly used for spraying sand to beat the blade is arranged at the top end of the box body. Through the arrangement of the adjusting assembly, the adjusting assembly can drive the connecting rod to rotate, and then the blades on the detection motor are driven to rotate, so that the anti-striking strength of the unmanned aerial vehicle when the unmanned aerial vehicle turns in the flight process, the vehicle body is inclined and the blades are located at non-horizontal positions can be detected.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicle detection, in particular to a structural strength testing machine. Background Art

[0002] With the development of science and technology, drones are being used more and more widely. Propeller blades are an important structure on drones. During flight, drones will inevitably collide with some objects. If the propeller blades are not strong enough, they may be damaged, which will directly lead to the drone being unusable. Therefore, it is particularly important to conduct structural strength tests on drone blades.

[0003] For example, a UAV blade strength detection device disclosed in the patent number CN216410947U includes a detection box, a protection box is arranged in the detection box, a motor is arranged in the protection box, a test blade is installed on the motor, and a sand lowering assembly is arranged above the detection box, and the sand lowering assembly is used to sprinkle fine sand and gravel into the detection box to hit the high-speed rotating blades to achieve the impact strength detection of the blades. Although the UAV blade strength detection device can sprinkle fine sand and gravel into the detection box and collide with the high-speed rotating blades, thereby playing the role of hitting the high-speed rotating blades, and then realizing the impact strength detection of the blades; However, there are some shortcomings in the UAV blade strength detection device. When the blade is detected, the blade is always in a horizontal position, resulting in that the detection device can only detect the impact strength of the blade when the UAV is flying horizontally, and when the UAV turns during the actual flight process, the fuselage will tilt, so that the blade is in a non-horizontal position, but the detection device cannot detect the impact strength of the blade when it is tilted, so it needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a structural strength testing machine to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A structural strength testing machine comprises a box body, a cavity is provided in the box body, a partition is provided in the cavity, the partition divides the cavity into an upper cavity and a lower cavity from top to bottom, a universal ball is provided at the center of the partition, a connecting rod that can rotate with the universal ball is provided on the universal ball, a plate is provided on the connecting rod, a detection motor is provided on the plate body, a blade to be detected is provided on the output shaft of the detection motor, an adjustment component for controlling the connecting rod for angle adjustment is provided on the partition, and a lower sand component for spraying sand to hit the blades is provided on the top of the box body.

[0007] Furthermore, the adjustment component includes a first mounting plate relatively arranged on the partition, a rotatable first shaft is provided on the first mounting plate, a first connecting block is provided on the first shaft, first arc plates for clamping a connecting rod are relatively provided between the first connecting blocks, a second arc plate for clamping the connecting rod is provided below the center of the first arc plate, the connecting rod extends from the intersection center of the first arc plate and the second arc plate, second connecting blocks are provided on both sides of the second arc plate, a rotatable second shaft is provided on the second connecting block, and a second mounting plate for installing the second shaft is provided on the partition.

[0008] Furthermore, a first motor for driving the first rotating shaft to rotate is disposed on one of the first mounting plates, and a second motor for driving the second rotating shaft to rotate is disposed on one of the second mounting plates.

[0009] Furthermore, the first mounting plate and the second mounting plate are provided with fixing plates for mounting the first motor and the second motor.

[0010] Furthermore, sliding rods penetrating the partition and extending into the upper cavity are provided at the four corners of the bottom of the lower cavity, and the partition can slide up and down along the sliding rods.

[0011] Furthermore, a cylinder for driving the partition to slide along the sliding rod is provided in the lower cavity.

[0012] Furthermore, the sand lowering assembly comprises a leaking plate arranged at the top of the box body, the leaking plate is provided with a sand lowering hole communicating with the upper cavity, and baffles are arranged on and around the leaking plate.

[0013] Furthermore, an opening and closing door is provided on the side of the box body, and a handle is provided on the opening and closing door.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model, through the arrangement of the detection motor, blades, adjustment components and sand lowering components, when the blades are detected, fine sand and gravel are sprinkled into the upper cavity through the sand lowering component, and the high-speed rotating blades collide with the sand and gravel, thereby hitting the blades, thereby realizing the detection of the impact resistance of the blades. Through the arrangement of the adjustment component, the adjustment component can drive the connecting rod to rotate, thereby adjusting the detection motor installed on the connecting rod, and then driving the blades on the detection motor to rotate, so as to detect the impact resistance of the blades in a non-horizontal position when the drone turns during flight.

[0016] 2. The utility model, through the setting of the sliding rod and the cylinder, makes the sliding rod fixedly connected to the bottom wall of the lower cavity, the partition is slidably connected to the sliding rod, the output end of the cylinder is fixedly connected to the partition, and the partition is driven by the cylinder to slide up and down, so as to adjust the contact height between the blade and the falling sand and gravel, thereby being able to detect the impact strength of the blade in contact with sand and gravel at different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the overall structure of a structural strength testing machine.

[0018] Figure 2 It is a schematic diagram of the structure of the utility model without the opening and closing door installed.

[0019] Figure 3 It is a structural schematic diagram of the partition and the components on the partition in the utility model.

[0020] The meanings of the numbers in the figure are as follows: 1. box body; 2. upper cavity body; 3. lower cavity body; 4. universal ball; 5. connecting rod; 6. plate body; 7. detection motor; 8. blade; 100. first mounting plate; 101. first rotating shaft; 102. first connecting block; 103. first arc plate; 104. second arc plate; 105. second connecting block; 106. second rotating shaft; 107. second mounting plate; 108. first motor; 109. second motor; 110. fixing plate; 200. sliding rod; 201. cylinder; 300. lower sand hole; 301. baffle; 9. opening and closing door; 10. handle; 11. partition. DETAILED DESCRIPTION

[0021] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only used to explain the utility model but not to limit it.

[0022] The following is combined with Figure 1-Figure 3 This embodiment is described in further detail.

[0023] See also Figure 1-Figure 3 A structural strength testing machine in this embodiment includes a box body 1, a cavity is provided in the box body 1, a partition 11 is provided in the cavity, the partition 11 divides the cavity into an upper cavity 2 and a lower cavity 3 from top to bottom, a universal ball 4 is provided at the center of the partition 11, a connecting rod 5 that can rotate with the universal ball 4 is provided on the universal ball 4, a plate body 6 is provided on the connecting rod 5, a detection motor 7 is provided on the plate body 6, a blade 8 to be detected is provided on the output shaft of the detection motor 7, an adjusting component for controlling the connecting rod 5 to adjust the angle is provided on the partition 11, a sand lowering component for spraying sand to hit the blade 8 is provided on the top of the box body 1, an opening and closing door 9 is provided on the side of the box body 1, and a handle 10 is provided on the opening and closing door 9.

[0024] In this embodiment, through the arrangement of the box body 1, the partition 11, the upper cavity 2, the lower cavity 3, the universal ball 4 and the connecting rod 5, in actual use, the universal ball 4 includes a ball seat fixed on the partition 11 and a ball rotatably arranged in the ball seat, wherein the connecting rod 5 is fixedly connected to the rotatable ball of the universal ball 4, so that the rotation of the ball in the universal ball 4 can drive the connecting rod 5 to rotate, that is, the rotation of the connecting rod 5 can drive the plate body 6 to rotate, thereby realizing the inclination of the detection motor 7 thereon;

[0025] Among them, the upper cavity 2 serves as the detection cavity of the blade 8;

[0026] In this embodiment, the opening and closing door 9 and the handle 10 are arranged so that the opening and closing door 9 is hingedly mounted on the box body 1, and the handle 10 is fixedly mounted on the opening and closing door 9;

[0027] In this embodiment, the plate body 6, the detection motor 7, the blade 8, the adjustment component and the lower sand component are arranged so that the plate body 6 is fixedly connected to the connecting rod 5, and the detection motor 7 is fixedly connected to the plate body 6. When the blade 8 is detected, the opening and closing door 9 is opened by the handle 10, and the blade 8 to be detected is installed on the output shaft of the detection motor 7, and the detection motor 7 is started to drive the blade 8 to rotate. Through the arrangement of the lower sand component, it can sprinkle fine sand and gravel into the upper cavity 2, and the high-speed rotating blade 8 collides with the sand and gravel, thereby hitting the blade 8, thereby realizing the detection of the impact resistance of the blade 8;

[0028] Among them, by setting the adjustment component, the adjustment component can drive the connecting rod 5 to rotate, thereby rotating the detection motor 7 installed on the connecting rod 5, and then driving the blade 8 on the detection motor 7 to rotate, so as to detect the impact resistance of the blade 8 when the fuselage is tilted and the blade 8 is in a non-horizontal position when the drone turns during flight;

[0029] In this embodiment, the opening and closing door 9 can use transparent explosion-proof glass to facilitate observation of the state of the blade 8 during the experiment. In order to prevent the influence of fine sand and gravel on the universal ball 4, a retractable dust cover is installed between the universal ball 4 and the connecting rod 5 to prevent sand and gravel from falling into the universal ball 4 and affecting its operation. A motor protection shell is installed outside the detection motor 7 to protect the motor from being affected by fine sand and gravel.

[0030] See also Figure 1-Figure 3In this embodiment, the adjustment component includes a first mounting plate 100 relatively arranged on the partition 11, a rotatable first shaft 101 is provided on the first mounting plate 100, a first connecting block 102 is provided on the first shaft 101, a first arc plate 103 for clamping the connecting rod 5 is relatively provided between the first connecting blocks 102, a second arc plate 104 for clamping the connecting rod 5 is provided below the center of the first arc plate 103, the connecting rod 5 extends from the intersection center of the first arc plate 103 and the second arc plate 104, second connecting blocks 105 are provided on both sides of the second arc plate 104, a rotatable second shaft 106 is provided on the second connecting block 105, a second mounting plate 107 for mounting the second shaft 106 is provided on the partition 11, a first motor 108 for driving the first shaft 101 to rotate is provided on one of the first mounting plates 100, and a second motor 109 for driving the second shaft 106 to rotate is provided on one of the second mounting plates 107.

[0031] In this embodiment, by configuring the first mounting plate 100, the first rotating shaft 101, the first connecting block 102, the first curved plate 103 and the first motor 108, the first mounting plate 100 is fixedly connected to the partition 11, the first rotating shaft 101 is rotatably connected to the first mounting plate 100, the first connecting block 102 is fixedly connected to the first rotating shaft 101, and the first curved plate 103 is fixedly connected to the first rotating shaft 101. The first motor 108 drives the first rotating shaft 101 to rotate, drives the first connecting block 102 to rotate, and thus drives the first curved plate 103 to rotate. An arc groove for the connecting rod 5 to pass through is formed between the first curved plates 103, so that the rotation of the first curved plate 103 can drive the connecting rod 5 to rotate;

[0032] In this embodiment, by configuring the second arc plate 104, the second connecting block 105, the second rotating shaft 106, the second mounting plate 107 and the second motor 109, the second mounting plate 107 is fixedly connected to the partition 11, the second rotating shaft 106 is rotatably connected to the second mounting plate 107, the second connecting block 105 is fixedly connected to the second rotating shaft 106, so that the second motor 109 can drive the second arc plate 104 to rotate, and an arc groove is also formed between the second arc plates 104, the second arc plate 104 is located below the first arc plate 103, and the second arc plate 104 and the first arc plate 103 can slide against each other;

[0033] In this embodiment, a square groove is formed at the intersection of the arc grooves of the first arc plate 103 and the second arc plate 104, and the connecting rod 5 extends from the square groove. When the angle of the blade 8 needs to be adjusted, the first motor 108 can be started first to drive the connecting rod 5 to rotate left and right. After the left and right angles are adjusted to the angle that needs to be detected, the second motor 109 can be started to drive the connecting rod 5 to rotate back and forth to adjust the angle. By controlling the rotation of the output shafts of the first motor 108 and the second motor 109, the connecting rod 5 can be controlled to rotate to multiple angles, thereby driving the blade 8 to perform multiple angle detection.

[0034] In this embodiment, the square groove can limit the connecting rod 5, wherein the first motor 108 and the second motor 109 are both self-locking motors. Through the self-locking function of the square groove, the first motor 108 and the second motor 109, the connecting rod 5 with adjusted angle can be fixed to prevent it from shaking through the universal ball 4 and affecting the detection of the blade 8.

[0035] In this embodiment, a protective shell is installed outside the first motor 108 and the second motor 109 , and the protective shell is used to protect the motors to prevent sand and stones from affecting the first motor 108 and the second motor 109 .

[0036] See also Figure 1-Figure 3 In this embodiment, a fixing plate 110 for mounting the first motor 108 and the second motor 109 is provided on the first mounting plate 100 and the second mounting plate 107 .

[0037] In this embodiment, by setting the fixing plate 110, the fixing plate 110 is fixedly connected to the first mounting plate 100 and the second mounting plate 107, and the first motor 108 and the second motor 109 are fixedly connected to the fixing plate 110, thereby better realizing the installation of the first motor 108 and the second motor 109.

[0038] See also Figure 1-Figure 3 In this embodiment, sliding rods 200 are provided at the four corners of the bottom of the lower cavity 3 and penetrate the partition 11 and extend into the upper cavity 2. The partition 11 can slide up and down along the sliding rods 200. A cylinder 201 is provided in the lower cavity 3 for driving the partition 11 to slide along the sliding rods 200.

[0039] In this embodiment, through the setting of the sliding rod 200 and the cylinder 201, the sliding rod 200 is fixedly connected to the bottom wall of the lower cavity 3, the partition 11 is slidably connected to the sliding rod 200, and the output end of the cylinder 201 is fixedly connected to the partition 11. The partition 11 is driven up and down by the cylinder 201 to adjust the contact height between the blade 8 and the falling sand and gravel, so that the sand and gravel can hit the blade 8 to be tested at different falling speeds, thereby testing the impact strength of the blade 8 to be tested.

[0040] See also Figure 1-Figure 3 In this embodiment, the sand lowering assembly includes a leaking plate arranged at the top of the box body 1, and a sand lowering hole 300 communicating with the upper cavity 2 is opened on the leaking plate, and baffles 301 are arranged on and around the leaking plate.

[0041] In this embodiment, by setting the leakage plate, the lower sand hole 300 and the baffle 301, sand and gravel can enter the upper cavity 2 through the lower sand hole 300, thereby performing impact detection on the rotating blades 8. The baffle 301 is used to enclose the sand and gravel to prevent it from leaking out of the leakage plate.

[0042] Working principle: When the structural strength testing machine is used, open the opening and closing door 9, install the blade 8 to be tested on the output shaft of the detection motor 7, start the detection motor 7 to drive the blade 8 to rotate, and at the same time, sprinkle fine sand and gravel from the lower sand hole 300 into the upper cavity 2 to hit the blade 8. The first motor 108 and the second motor 109 can be started to adjust the angle of the blade 8 to detect the impact strength of the blade 8 at multiple angles. At the same time, the cylinder 201 can also be started to adjust the contact height between the blade 8 and the sand and gravel, so as to detect the impact strength of the blade 8 when it contacts the sand and gravel at different heights.

[0043] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.

Claims

1. A structural strength testing machine, comprising a box (1), characterized in that: The box body (1) is provided with a cavity, and a partition (11) is provided in the cavity. The partition (11) divides the cavity into an upper cavity (2) and a lower cavity (3) from top to bottom. A universal ball (4) is provided at the center of the partition (11). A connecting rod (5) that can rotate with the universal ball (4) is provided on the universal ball (4). A plate body (6) is provided on the connecting rod (5). A detection motor (7) is provided on the plate body (6). A blade (8) to be detected is provided on the output shaft of the detection motor (7). An adjustment component for controlling the connecting rod (5) to adjust the angle is provided on the partition (11). A sand lowering component for spraying sand to hit the blade (8) is provided at the top of the box body (1).

2. A structural strength testing machine according to claim 1, characterized in that: The adjustment component comprises a first mounting plate (100) arranged relatively to the partition (11); a rotatable first shaft (101) is arranged on the first mounting plate (100); a first connecting block (102) is arranged on the first shaft (101); first arc plates (103) for clamping a connecting rod (5) are arranged relatively between the first connecting blocks (102); a second arc plate (104) for clamping the connecting rod (5) is arranged below the center of the first arc plate (103); the connecting rod (5) extends from the intersection center of the first arc plate (103) and the second arc plate (104); second connecting blocks (105) are arranged on both sides of the second arc plate (104); a rotatable second shaft (106) is arranged on the second connecting block (105); and a second mounting plate (107) for mounting the second shaft (106) is arranged on the partition (11).

3. A structural strength testing machine according to claim 2, characterized in that: A first motor (108) for driving the first rotating shaft (101) to rotate is disposed on one of the first mounting plates (100), and a second motor (109) for driving the second rotating shaft (106) to rotate is disposed on one of the second mounting plates (107).

4. A structural strength testing machine according to claim 2, characterized in that: The first mounting plate (100) and the second mounting plate (107) are provided with a fixing plate (110) for mounting the first motor (108) and the second motor (109).

5. A structural strength testing machine according to claim 1, characterized in that: Sliding rods (200) are provided at the four corners of the bottom of the lower cavity (3) and penetrate through the partition (11) and extend into the upper cavity (2); the partition (11) can slide up and down along the sliding rods (200).

6. A structural strength testing machine according to claim 5, characterized in that: A cylinder (201) is provided in the lower cavity (3) for driving the partition plate (11) to slide along the sliding rod (200).

7. A structural strength testing machine according to claim 1, characterized in that: The sand lowering assembly comprises a leaking plate arranged at the top of the box body (1), the leaking plate is provided with a sand lowering hole (300) which is connected to the upper cavity (2), and baffles (301) are arranged on and around the leaking plate.

8. A structural strength testing machine according to claim 1, characterized in that: An opening and closing door (9) is provided on the side of the box body (1), and a handle (10) is provided on the opening and closing door (9).

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