CN209795862U - Test device for launching water float - Google Patents
Test device for launching water float Download PDFInfo
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- CN209795862U CN209795862U CN201920516064.5U CN201920516064U CN209795862U CN 209795862 U CN209795862 U CN 209795862U CN 201920516064 U CN201920516064 U CN 201920516064U CN 209795862 U CN209795862 U CN 209795862U
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Abstract
The utility model discloses a test device for launching a float, which comprises a fixed base, an attack angle adjusting platform, a speed angle adjusting component and a launching component which are sequentially arranged from bottom to top; the attack angle adjusting platform is arranged on the fixed base in a manner of adjusting an included angle between the attack angle adjusting platform and the horizontal plane; the speed angle adjusting assembly is used for enabling the launching assembly to have an initial speed of moving downwards; the launching assembly is used for placing the water float and providing adjustable launching kinetic energy for the water float. The utility model provides a test device for launching float, can adjust float launch in the experiment of float launch initial velocity, float attack angle, float speed angle isoparametric of float of water under the prerequisite of assurance test precision to satisfy easy operation, with low costs, economical and practical's demand.
Description
Technical Field
The utility model relates to a mechanical test technical field, concretely relates to a test device for launching float.
Background
the water-fetching float is a common phenomenon, and the problems of water-fetching float can be simplified when a spacecraft enters the atmosphere again, an airplane is forced to land on water and the like. At present, research in the field of water hitting and bouncing (water rinsing) is mostly limited to theory and numerical simulation, and experimental verification and support are lacked, and the experimental verification is mainly limited to a reasonable water rinsing and launching device. Theoretical and numerical simulation researches show that factors influencing the bouncing of the water float comprise the initial speed (v) of the water float, the included angle between the water float and the water surface, namely an attack angle (alpha), and the included angle between the speed direction of the water float and the water surface, namely a speed angle (beta), and in addition, in order to ensure the stability of the water float in the bouncing process, the water float preferably has a certain spinning speed (omega). At present, the method for providing the initial speed (v) mostly utilizes friction force, for example, the edge of a horizontal turntable and a water float object is in close contact, the horizontal turntable rotates to drive the water float object to rotate and emit the water float object along the emitting track direction, and the method has the advantages of simple structure and easy operation through the friction force, but the requirement of an experiment with higher precision requirement is difficult to meet. In addition, the speed angle (beta) of the existing water float launching device can hardly be adjusted, the speed in the horizontal direction is easy to adjust, and the speed in the vertical direction is generated only by the free falling body of a water float object. The utility model discloses fully considered these demands of water drift emitter, under the prerequisite of the precision of verifying, made experimental apparatus easy operation, economical and practical.
Therefore, in order to solve the above problems, a testing device for launching the water float is needed, which can adjust parameters such as initial speed of the water float, attack angle of the water float, speed angle of the water float and the like in the water float launching test on the premise of ensuring the testing precision, and meet the requirements of simple operation, low cost, economy and practicality.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at overcoming the defect among the prior art, provide a test device for launching the water float, can adjust water float initial velocity, the attack angle that the water floats, the water float speed angle isoparametric in the water float launching test under the prerequisite of assurance test precision to satisfy easy operation, with low costs, economical and practical's demand.
The utility model discloses a test device for launching a water float, which comprises a fixed base, an attack angle adjusting platform, a speed angle adjusting component and a launching component which are sequentially arranged from bottom to top; the attack angle adjusting platform is arranged on the fixed base in a manner of adjusting an included angle between the attack angle adjusting platform and the horizontal plane; the speed angle adjusting assembly is used for enabling the launching assembly to have an initial speed of moving downwards; the launching assembly is used for placing the water float and providing adjustable launching kinetic energy for the water float.
Further, the device also comprises a rotating speed adjusting component; the rotating speed adjusting assembly comprises a portal frame and a motor I, the portal frame is fixed on the attack angle adjusting platform, a rotor shaft of the motor is vertically downward, and the end part of the rotor shaft is provided with a connector used for being connected with the water float.
Furthermore, the upright post of the portal frame is a triangular supporting structure.
Furthermore, the launching assembly comprises a supporting frame connected with the speed angle adjusting assembly, a launching flat tube arranged on the supporting frame and used for placing and guiding the water float, an impact head arranged at the tail of the launching flat tube and used for impacting the water float, and a power mechanism used for providing adjustable kinetic energy for the impact head; and the transmitting flat tube is provided with a through hole for the connector to pass through.
Furthermore, angle of attack regulation platform one end is articulated with unable adjustment base, and the other end passes through angle adjusting part and is connected with unable adjustment base.
Furthermore, the angle adjusting assembly comprises an arc-shaped rack fixed in the middle or at the tail of the attack angle adjusting platform, a gear or a worm meshed with the arc-shaped rack, and a motor II used for providing power for the gear or the worm.
Further, the speed angle adjusting assembly comprises a driving mechanism and a guide rod which are arranged on the attack angle adjusting platform; the guide bar is provided with at least three, be provided with on the support frame and be used for with guide bar complex guiding hole.
Further, the driving mechanism enables the launching assembly to move in a direction perpendicular to the attack angle adjusting platform and downward; the guide rod is perpendicular to the attack angle adjusting platform, so that the launching component only has a single degree of freedom of reciprocating motion in a direction perpendicular to the attack angle adjusting platform.
Furthermore, the driving mechanism is an actuating cylinder, the telescopic direction of the actuating cylinder is perpendicular to the attack angle adjusting platform, and the top end of the guide rod is provided with a protruding part for preventing the support frame from being separated from the guide rod.
The utility model has the advantages that: the utility model discloses a test device for launching a float, which adjusts the attack angle alpha of the float by changing the angle of attack of an angle adjusting platform and a fixed base on the premise of ensuring the launch test precision of the float; adjusting the launching velocity v of the water float along the guide rail in the test by changing the launching kinetic energy provided by the water float1(ii) a The launching component has an initial velocity v moving downwards through the velocity angle adjusting component0(ii) a Changing the launching velocity v at a specific drift angle of attack alpha1And initial velocity v of downward movement0The purpose of controlling the initial speed v and the speed angle beta of the water float is achieved. Meanwhile, the device is simple in structure, complex processing of all parts is not needed, the overall cost is low, and the device is economical and practical and is simple to operate when in use.
Drawings
The invention will be further described with reference to the following figures and examples:
Fig. 1 is a schematic structural view of the present invention;
Fig. 2 is a schematic structural view of the fixing base of the present invention;
FIG. 3 is a schematic structural view of the launching assembly with the float installed according to the present invention;
Fig. 4 is the structure diagram of the angle of attack adjusting platform, the speed angle adjusting assembly and the rotating speed adjusting assembly of the present invention.
Detailed Description
As shown in fig. 1 to 4, the test device for launching a water float in the embodiment includes a fixed base 2, an attack angle adjusting platform 3, a speed angle adjusting assembly and a launching assembly, which are sequentially installed from bottom to top; the attack angle adjusting platform 3 is arranged on the fixed base 2 in a manner of adjusting an included angle with a horizontal plane; the speed angle adjusting assembly is used for enabling the launching assembly to have an initial speed of moving downwards; the launching assembly is used for placing the water float 1 and providing adjustable launching kinetic energy for the water float 1. On the premise of ensuring the launching test precision of the water float 1, the angle of attack alpha of the water float 1 is adjusted by changing the angles of attack of the angle of attack adjusting platform 3 and the fixed base 2, wherein the angle of attack between the angle of attack adjusting platform 3 and the horizontal plane refers to the angle of attack of the angle of attack adjusting platform 3 and the horizontal plane launched along the water float 1An included angle in the direction; the launching velocity v of the float 1 along the guide rail in the test is adjusted by changing the launching kinetic energy provided by the float 11(ii) a The launching component has an initial velocity v moving downwards through the velocity angle adjusting component0The term "downward movement" as used herein refers to a direction from the launching assembly toward the angle of attack adjustment platform 3; changing the launching velocity v at a specific drift angle of attack alpha1And initial velocity v of downward movement0The purpose of controlling the initial speed v and the speed angle beta of the water float is achieved. Meanwhile, the device is simple in structure, complex processing of all parts is not needed, the overall cost is low, and the device is economical and practical and is simple to operate when in use.
In the embodiment, the device further comprises a rotating speed adjusting component; the rotating speed adjusting assembly comprises a portal frame 41 and a motor I42, the portal frame 41 is fixed on the attack angle adjusting platform 3, a rotor shaft of the motor I42 is vertically downward, and the end part of the rotor shaft is provided with a connector 43 used for being connected with the water float 1. The center of the upper surface of the float 1 is provided with a connecting part 11 which can be matched with the connecting head 43 and enables the float 1 and the connecting head 43 to rotate coaxially. The water float 1 is a disc-shaped water float 1, and the connecting part 11 is a non-circular groove arranged in the center of the disc; the shape of the coupling head 43 is complementary to the non-circular recess. The disc-shaped water float has high flight stability, the connector 43 can be a polygon prism (such as a hexagonal prism and a pentagonal prism), and the non-circular groove is in a shape corresponding to the end face of the connector 43. The rotor shaft of motor I42 rotates and drives connector 43 and rotate to drive float 1 and rotate, the I42 rotational speed of motor is adjustable, realizes adjusting the purpose of float 1 initial spin speed omega, and float 1 has certain spin speed omega and can guarantee the stability of float 1 at the spring in-process.
in this embodiment, the column of the gantry 41 is a triangular support structure. When the rotor shaft of motor I42 drives float 1 to rotate, the stand of portal frame 41 both sides can bear great moment, in order to strengthen portal frame 41's stability, designs the stand of portal frame 41 both sides into triangle-shaped bearing structure, prevents to lead to the fact portal frame 41 to rock because of the operation of motor I42 even warp the accuracy that influences the launch experiment of float 1.
In the embodiment, the launching assembly comprises a supporting frame 51 connected with the speed angle adjusting assembly, a launching flat tube 52 arranged on the supporting frame 51 and used for placing and guiding the float 1, a striking head 53 arranged at the tail part of the launching flat tube 52 and used for striking the float 1, and a power mechanism 54 used for providing adjustable kinetic energy for the striking head 53; the emission flat tube 52 is provided with a through hole for the connection head 43 to pass through. The upper side of the launching flat tube 52 is not provided with a notch for placing the float 1, the float 11 is placed from the launching port when being installed during use and then pushed to a specified position through the sheet, and the speed of the downward movement of the float 1 and the launching flat tube 52 is the same when the launching flat tube 52 moves downward, so that the adjustment of the speed angle beta is more accurate. The power mechanism 54 pushes the impact head 53, so that the impact head 53 moves along the center line of the launching flat tube 52 to impact the float 1, and the launching of the float 1 is realized. The power mechanism 54 can be selected from a plurality of mechanisms, such as a spring arranged in the support frame 51 behind the transmitting flat tube 52 to push the impact head 53 (adjusting the compression amount of the spring can change the kinetic energy when the impact head 53 impacts the water float 1), a high-pressure air pump connected to push the impact head 53 (adjusting the pressure and the flow rate of high-pressure air can change the kinetic energy when the impact head 53 impacts the water float 1), and even an electromagnetic transmitter principle to push the impact head 53 (adjusting the electromagnetic force can change the kinetic energy when the impact head 53 impacts the water float 1), and a plurality of mechanisms capable of providing adjustable kinetic energy are available in the prior art, and are not described herein again.
In this embodiment, 3 one end of angle of attack regulation platform is articulated with unable adjustment base 2, and the other end passes through angle adjusting part and is connected with unable adjustment base 2. The angle adjusting component enables the attack angle adjusting platform 3 to swing by taking the hinged part as a rotating center, so that the included angle between the attack angle adjusting platform 3 and the horizontal plane is changed.
In this embodiment, the angle adjusting assembly includes an arc-shaped rack 61 fixed at the middle or the tail of the attack angle adjusting platform 3, a gear or a worm engaged with the arc-shaped rack 61, and a motor ii 63 for providing power for the gear or the worm. The arc-shaped rack 61 is fixed on the attack angle adjusting platform 3 and is meshed with the arc-shaped rack 61 at different positions through the rotation of the gear 62 or the worm, so that the arc-shaped rack 61 drives the attack angle adjusting platform 3 to swing by taking the hinged position as a rotation center. When using gear 62 and arc rack 61 meshing, adopt the self-locking motor for gear 62 provides the motor II 63 of power, have the locking effect when providing power, prevent attack angle adjustment platform 3 angle after adjusting the angle of attack adjustment platform 3 to appointed angle and change. When the worm is meshed with the arc-shaped rack 61, besides the mode of locking by the self-locking motor, the unfolding spiral angle of the worm can be smaller than the friction angle of the arc-shaped rack 61 contacting with the worm, so that the arc-shaped rack 61 cannot drive the worm to rotate to realize self-locking.
In this embodiment, the speed angle adjusting assembly includes a driving mechanism 71 and a guide rod 72 disposed on the attack angle adjusting platform 3; the number of the guide rods 72 is at least three, and the support frame 51 is provided with guide holes 51a for matching with the guide rods 72. The drive mechanism 71 is used to provide a downward velocity v to the firing assembly0The guide hole 51a and the guide rod 72 cooperate to guide the moving direction of the launching assembly.
In this embodiment, the driving mechanism 71 moves the launching assembly in a direction perpendicular to the angle of attack adjustment platform 3 and downward; the guide rods 72 are perpendicular to the angle of attack adjustment platform 3 so that the launching assembly has only a single degree of freedom of reciprocating motion in a direction perpendicular to the angle of attack adjustment platform 3. The water float 1 has a velocity v before flying out of the launching flat tube 52 due to the launching assembly0So that the velocity v of the float 1 after it has flown off the emitter flat tube 52 is the velocity v of the emitter assembly0And a launch velocity v1the combination of the two, the transmission speed v1Is determined by the power mechanism 54 by varying the transmission speed v1And velocity v0The purpose of controlling the speed v of the water float 1 and the speed angle beta of the water float is achieved. The driving mechanism 71 moves the launching assembly in a direction perpendicular to the angle of attack adjustment platform 3 and downwards, causing the velocity v of the launching assembly to be0With the launch velocity v1vertical, the two-speed vertical design has the same magnitude of speed v when the speed is combined0The influence on the drift velocity angle beta is larger than the case that the two velocities are not vertical.
In this embodiment, the driving mechanism 71 is an actuator cylinder, the telescopic direction of the actuator cylinder is perpendicular to the attack angle adjusting platform 3, and the top of the guide rod 72 isThe end is provided with a boss 72a that prevents the support bracket 51 from being separated from the guide bar 72. The launching component is driven to move along the direction which is vertical to the attack angle adjusting platform 3 and downward by the downward contraction of the actuating cylinder, the float 1 and the launching component move synchronously, so that the float 1 has the speed v which is vertical to the attack angle adjusting platform 3 and downward0. The projection 72a is used to limit the stroke of the launching assembly, prevent the launching assembly from falling out of the guide rod 72, and when the launching assembly with the float 1 is lifted to contact with the projection 72a, the connector 43 at the end of the output shaft of the driving mechanism 71 is inserted into the non-circular groove on the float 1.
During the test, the attack angle adjusting platform 3 is adjusted to the designated position to control the attack angle alpha of the water float by adjusting the gear or the worm, then the motor I42 is enabled to output according to the required rotating speed to realize the purpose of controlling the self-rotating speed omega of the water float 1, the speed angle adjusting assembly is started, and the launching assembly drives the water float 1 to rotate at the set speed v0Sliding downwards along the direction vertical to the attack angle adjusting platform 3, wherein the connecting head 43 is separated from the noncircular groove of the connecting part 11 of the float 1, and the power mechanism 54 provides kinetic energy to enable the impact head 53 to impact the float 1, and the float 1 has the velocity v before flying out of the launching flat tube 52 due to the launching assembly0So that the velocity v of the float 1 after it has flown off the emitter flat tube 52 is the velocity v of the emitter assembly0And a launch velocity v1The combination of the two, the transmission speed v1Is determined by the power mechanism 54 by varying the transmission speed v1And velocity v0The purpose of controlling the speed v of the water float 1 and the speed angle beta of the water float is achieved. To sum up, the utility model discloses a device has realized adjusting float 1 launch test in float initial velocity v, float 1 attack angle alpha, float speed angle beta and float 1 spin speed omega's parameter.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (9)
1. The utility model provides a test device for launching water float which characterized in that: the device comprises a fixed base, an attack angle adjusting platform, a speed angle adjusting assembly and a transmitting assembly which are sequentially arranged from bottom to top; the attack angle adjusting platform is arranged on the fixed base in a manner of adjusting an included angle between the attack angle adjusting platform and the horizontal plane; the speed angle adjusting assembly is used for enabling the launching assembly to have an initial speed of moving downwards; the launching assembly is used for placing the water float and providing adjustable launching kinetic energy for the water float.
2. Test device for launching a water float according to claim 1, characterized in that: the device also comprises a rotating speed adjusting component; the rotating speed adjusting assembly comprises a portal frame and a motor I, the portal frame is fixed on the attack angle adjusting platform, and a connector used for being connected with the water float is arranged vertically downwards on a rotor shaft of the motor I and at the end part of the rotor shaft.
3. Test device for launching a water float according to claim 2, characterized in that: the upright post of the portal frame is a triangular supporting structure.
4. Test device for launching a water float according to claim 2, characterized in that: the launching assembly comprises a supporting frame connected with the speed angle adjusting assembly, a launching flat tube arranged on the supporting frame and used for placing and guiding the water float, an impact head arranged at the tail of the launching flat tube and used for impacting the water float, and a power mechanism used for providing adjustable kinetic energy for the impact head; and the transmitting flat tube is provided with a through hole for the connector to pass through.
5. Test device for launching a water float according to claim 1, characterized in that: one end of the attack angle adjusting platform is hinged to the fixed base, and the other end of the attack angle adjusting platform is connected with the fixed base through the angle adjusting assembly.
6. Test device for launching a water float according to claim 5, characterized in that: the angle adjusting assembly comprises an arc-shaped rack fixed in the middle or at the tail of the attack angle adjusting platform, a gear or a worm meshed with the arc-shaped rack, and a motor II used for providing power for the gear or the worm.
7. Test device for launching a water float according to claim 4, characterized in that: the speed angle adjusting assembly comprises a driving mechanism and a guide rod which are arranged on the attack angle adjusting platform; the guide bar is provided with at least three, be provided with on the support frame and be used for with guide bar complex guiding hole.
8. Test device for launching a water float according to claim 7, characterized in that: the driving mechanism enables the launching assembly to move in a direction which is vertical to the attack angle adjusting platform and downward; the guide rod is perpendicular to the attack angle adjusting platform, so that the launching component only has a single degree of freedom of reciprocating motion in a direction perpendicular to the attack angle adjusting platform.
9. Test device for launching a water float according to claim 7, characterized in that: the driving mechanism is an actuating cylinder, the telescopic direction of the actuating cylinder is perpendicular to the attack angle adjusting platform, and the top end of the guide rod is provided with a protruding part for preventing the support frame from being separated from the guide rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920516064.5U CN209795862U (en) | 2019-04-15 | 2019-04-15 | Test device for launching water float |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920516064.5U CN209795862U (en) | 2019-04-15 | 2019-04-15 | Test device for launching water float |
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| Publication Number | Publication Date |
|---|---|
| CN209795862U true CN209795862U (en) | 2019-12-17 |
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| CN201920516064.5U Active CN209795862U (en) | 2019-04-15 | 2019-04-15 | Test device for launching water float |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109927928A (en) * | 2019-04-15 | 2019-06-25 | 西安航空学院 | Water hair bleaching penetrates experimental rig |
| CN113465876A (en) * | 2021-08-03 | 2021-10-01 | 北京理工大学 | Multi-mode experimental launching device that entries |
-
2019
- 2019-04-15 CN CN201920516064.5U patent/CN209795862U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109927928A (en) * | 2019-04-15 | 2019-06-25 | 西安航空学院 | Water hair bleaching penetrates experimental rig |
| CN109927928B (en) * | 2019-04-15 | 2024-02-27 | 西安航空学院 | Water float emission test device |
| CN113465876A (en) * | 2021-08-03 | 2021-10-01 | 北京理工大学 | Multi-mode experimental launching device that entries |
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