Anti-grounding protection device for self-propelled model and operation method

Abstract

The grounding prevention protection device comprises the self-propelled model, mounting plates are fixed to the two sides of a boat body of the self-propelled model respectively, a supporting rod frame is mounted outside the self-propelled model, the grounding prevention protection device specifically comprises lifting rods which are symmetrically arranged, horizontal rods are arranged at the bottoms of the lifting rods, and fixing ring assemblies are mounted on the lifting rods; the fixing ring assembly comprises an upper fixing ring and a lower fixing ring, the upper fixing ring is arranged on the top face of the lifting rod and moves along with the lifting rod, and the middle of the lifting rod is sleeved with the lower fixing ring. The buffering assembly comprises a fastening ring arranged on the lifting rod in a sleeving mode, a horizontal rotating shaft is fixed to the outer end face of the fastening ring, the outer end face of the horizontal rotating shaft is fixed to an inner ring of a bearing, the outer end face of the bearing is parallel to the mounting plate and is fixed to the mounting plate through an outer ring of the bearing, and the horizontal rotating shaft is sleeved with a torsion spring; the waterproof cloth is attached to the boat body, the bottom of the waterproof cloth is conformal with the boat body after being cut, protection is reliable, and cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of self-propelled model test protection equipment, in particular to an anti-bottoming protection device for a self-propelled model and an operating method. Background Art

[0002] In the self-propelled model tank test, in order to avoid interference from the water surface and the bottom of the pool, the self-propelled model can usually only sail at high speed in the thin water layer in the middle. During the test, especially in the early stage of commissioning, once a fault or unexpected disturbance occurs, the hull with a small bow burial angle will dive quickly, resulting in an over-depth or even bottoming accident. The existing over-depth protection methods are mainly as follows:

[0003] 1) Artificial protection method.

[0004] Specifically, the protection personnel follow the self-propelled model on the small boat. When danger is found, the auxiliary rope is pulled manually to pull the self-propelled model to avoid hitting the bottom. This method is difficult to cope with high speed and complex boat posture, occupies many people, is difficult to operate, and the effect is not ideal.

[0005] 2) Automatic protection method.

[0006] The ship model needs to be equipped with an ultra-deep dumping system, which is complex and occupies a large space, and cannot cope with power outages, flight control failures, equipment damage, etc. After dumping, the self-propelled model needs to be hoisted to reset and install the dumping block, which is complicated and time-consuming.

[0007] In summary, the existing methods are not ideal and need the following improvements:

[0008] 1) When the boat is extremely deep, it can provide braking force and bow lifting force at the same time to guide the boat to float to the surface for subsequent maintenance;

[0009] 2) The anti-sinking protection is moderate to avoid excessive response, which may cause secondary damage such as the tail hitting the bottom or rushing out of the water;

[0010] 3) No need to lift in and out of water when resetting, easy to operate and high test efficiency;

[0011] 4) The device is simple and reliable, easy to install and adjust, low in cost, and can be reused by multiple boats.

[0012] Existing devices fail to meet demand and new designs are needed. Summary of the invention

[0013] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides an anti-bottoming protection device and operation method for a self-propelled model, which can conveniently complete the anti-bottoming protection work of the self-propelled model, and has good overall working reliability and low cost.

[0014] The technical solution adopted by the present invention is as follows:

[0015] A bottoming protection device for a self-propelled model comprises a self-propelled model, mounting plates are fixed on both sides of the hull of the self-propelled model, a support rod frame is installed on the outside of the self-propelled model, and the structure of the support rod frame is as follows: it comprises symmetrically arranged lifting rods, a horizontal rod is arranged at the bottom of the lifting rod, rollers are arranged at intervals on the horizontal rod, a fixing ring assembly is installed on the lifting rod, and the fixing ring assembly comprises an upper fixing ring and a lower fixing ring, the upper fixing ring is arranged on the top surface of the lifting rod, the upper fixing ring moves with the lifting rod, and the lower fixing ring is sleeved on the lifting rod. The middle part also includes a buffer component installed between the mounting plate and the lifting rod, and the structure of the buffer component is as follows: it includes a fastening ring sleeved on the lifting rod, a horizontal rotating shaft is fixed on the outer end surface of the fastening ring, the outer end surface of the horizontal rotating shaft is fixed to the inner ring of the bearing, the outer end surface of the bearing is parallel to the mounting plate, and is fixed to the mounting plate by the outer ring of the bearing, and a torsion spring is sleeved on the horizontal rotating shaft; it also includes a waterproof cloth attached to the hull, the bottom of the waterproof cloth is cut to conform to the hull, and the four corners of the waterproof cloth are respectively connected to the upper fixing ring and the lower fixing ring on the lifting rods on both sides.

[0016] Its further technical solution is:

[0017] The lifting rod and the horizontal rod are both rigid thin rods with adjustable lengths.

[0018] The lifting rod and the horizontal rod are both made of carbon fiber reinforced material.

[0019] The inner ring of the fastening ring is provided with a rubber layer.

[0020] The fastening ring has a squeezing force on the lifting rod and is adjustable to provide a friction locking force.

[0021] The locking force of the fastening ring on the lifting rod is smaller than the collision force between the self-propelled model and the boat body.

[0022] The horizontal rotating shaft is a rigid cylindrical shaft.

[0023] The waterproof cloth is made of light, ultra-thin and high-strength material.

[0024] An operating method for an anti-bottoming protection device for a self-propelled model,

[0025] First, adjust the length of the horizontal rod to match the width of the self-propelled aircraft model and install the protective device;

[0026] During the sliding process, the rollers on the horizontal rods roll, which greatly reduces the horizontal pulling force of the pool bottom on the self-propelled model and avoids increasing the longitudinal tilt of the self-propelled model.

[0027] Then, when the self-propelled aircraft model is squeezed with the seabed, the lifting rod is forced to overcome the friction locking force of the fastening ring and move upward;

[0028] During the collision, the lifting rod with the fastening ring overcomes the torsion of the torsion spring and rotates slightly around the axis of the horizontal shaft to achieve buffering, reduce the impact force, and protect the lifting rod device;

[0029] Then, the lifting rod with the upper fixing ring pulls the waterproof cloth upward and unfolds it;

[0030] Afterwards, once the hull turns to float, the lifting rod is away from the bottom of the pool, the height is locked by the fastening ring, the unfolded height of the waterproof cloth is constant, and the anti-sinking force no longer increases;

[0031] Finally, when the boat stops on the water surface, the fault can be repaired or the control parameters can be adjusted in the pool as needed, and the protection personnel on the boat push the lifting rod down to the bottom to reset the protection device. The beneficial effects of the present invention are as follows:

[0032] The invention has a compact and reasonable structure and is easy to operate. Through the cooperation between the thin support rods, waterproof cloth, mounting plate and buffer assembly, the self-propelled model can be easily protected from bottoming out. The overall working reliability is good and the cost is low.

[0033] This device is symmetrically installed on the bow of the self-propelled model. When the self-propelled model is sailing straight at high speed in the pool and the bow is buried too deep, this device will touch the bottom first. The bottoming force pushes the lifting rod upward to support the waterproof cloth above the hull to unfold, generating hydrodynamic resistance, which is used to slow down and guide the hull to float to the surface of the water, thereby avoiding bottoming. The extension degree of the waterproof cloth is related to the degree of over-depth. The self-balancing type provides the required anti-sinking force to avoid secondary damage caused by excessive anti-sinking force. When the self-propelled model fault is eliminated, the device can be reset in the water without lifting. It is easy to operate and has high test efficiency. This device does not require power, is not afraid of water pressure, has high reliability, and has wide adaptability, easy installation, and low cost. It provides a new solution for the anti-bottoming protection of self-propelled models.

[0034] The invention uses a purely mechanical, power-free independent device to protect the self-propelled model from bottoming out, and has high reliability.

[0035] The present invention can provide appropriate braking bow lifting force in a self-balancing manner to avoid excessive anti-sinking and secondary damage.

[0036] After the anti-sinking and floating, the invention can be directly reset in the pool without lifting to the shore, thus simplifying the process, facilitating operation and saving time.

[0037] The invention is installed outside the self-propelled model, does not require space inside the boat, has a flexible installation position, has little interference with the boat body, and has wide adaptability.

[0038] The installation width and response height of the invention are conveniently adjustable, suitable for various self-propelled models, and can be reused.

[0039] The invention does not require pressure resistance, has a simple structure, a small size, a light weight and a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The figure is a schematic diagram of the installation of the present invention on a self-propelled model.

[0041] Figure 2 for Figure 1 A partial enlarged view of part A in the middle.

[0042] Figure 3 The figure is an installation diagram (front view) of the present invention on a self-propelled model.

[0043] Figure 4 This is a diagram of the ultra-deep bottoming process of the self-propelled aircraft model of the present invention during direct flight.

[0044] Figure 5 This is a diagram showing the process of the lifting rod rising and the waterproof cloth unfolding when the self-propelled aircraft model touches the bottom and collides with the lifting rod.

[0045] Figure 6 The self-model aircraft of the present invention turns to a state of raising the bow and floating after touching the bottom.

[0046] Among them: 1. Mounting plate; 2. Support rod frame; 3. Buffer assembly; 4. Fixing ring assembly; 5. Waterproof cloth; 6. Self-propelled model;

[0047] 21. Lifting rod; 22. Horizontal rod; 23. Roller;

[0048] 31. Fastening ring; 32. Horizontal rotating shaft; 33. Bearing; 34. Torsion spring;

[0049] 41. Upper fixing ring; 42. Lower fixing ring. DETAILED DESCRIPTION

[0050] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0051] like Figure 1-Figure 6As shown, the anti-bottoming protection device for a self-propelled model of the present embodiment comprises a self-propelled model 6, mounting plates 1 are respectively fixed on both sides of the hull of the self-propelled model 6, a support rod frame 2 is installed on the outside of the self-propelled model 6, and the structure of the support rod frame 2 is as follows: comprising symmetrically arranged lifting rods 21, a horizontal rod 22 is arranged at the bottom of the lifting rod 21, rollers 23 are arranged at intervals on the horizontal rod 22, a fixing ring assembly 4 is installed on the lifting rod 21, and the fixing ring assembly 4 comprises an upper fixing ring 41 and a lower fixing ring 42, the upper fixing ring 41 is arranged on the top surface of the lifting rod 21, the upper fixing ring 41 moves with the lifting rod 21, and the lower fixing ring 42 is sleeved on the lifting rod 21. 1; also includes a buffer assembly 3 installed between the mounting plate 1 and the lifting rod 21, the structure of the buffer assembly 3 is: including a fastening ring 31 sleeved on the lifting rod 21, the outer end surface of the fastening ring 31 is fixed with a horizontal shaft 32, the outer end surface of the horizontal shaft 32 is fixed to the inner ring of a bearing 33, the outer end surface of the bearing 33 is parallel to the mounting plate 1, and is fixed to the mounting plate 1 by the outer ring of the bearing 33, and a torsion spring 34 is sleeved on the horizontal shaft 32; also includes a waterproof cloth 5 attached to the hull, the bottom of the waterproof cloth 5 is cut to conform to the hull, and the four corners of the waterproof cloth 5 are respectively connected to the upper fixing ring 41 and the lower fixing ring 42 on the lifting rods 21 on both sides.

[0052] The lifting rod 21 and the horizontal rod 22 are both rigid thin rods with adjustable lengths.

[0053] The lifting rod 21 and the horizontal rod 22 are both made of carbon fiber reinforced material.

[0054] The inner ring of the fastening ring 31 is provided with a rubber layer.

[0055] The fastening ring 31 exerts a squeezing force on the lifting rod 21 and is adjustable to provide a friction locking force.

[0056] The locking force of the fastening ring 31 on the lifting rod 21 is smaller than the collision force between the self-propelled model 6 and the boat body.

[0057] The horizontal rotating shaft 32 is a rigid cylindrical shaft.

[0058] The waterproof cloth 5 is made of light, ultra-thin, high-strength material.

[0059] For the sake of convenience, this embodiment magnifies and highlights the size of the device relative to the self-propelled model 6. In fact, the volume and weight of the device can be reduced by selecting high-strength materials, optimizing the structural dimensions, etc., and finally achieving the effect that the impact on the navigation test of the self-propelled model 6 can be ignored. This device is installed in front of the hull. In addition to the shared horizontal rod 22 and the waterproof cloth 5, the remaining devices are symmetrically installed on both sides of the hull. In order to save space, this embodiment only introduces the device on the left side.

[0060] Specifically, it mainly includes a mounting plate 1, a support rod frame 2, a buffer assembly 3, a fixing ring assembly 4, a waterproof cloth 5 and a self-propelled model 6.

[0061] The mounting plate 1 is fixedly connected to both sides of the hull of the self-propelled model 6 .

[0062] The support rod frame 2 includes a lifting rod 21 , a horizontal rod 22 and a roller 23 .

[0063] The lifting rod 21 and the horizontal rod 22 are both rigid thin rods with adjustable lengths, and are made of carbon fiber reinforced material.

[0064] The lifting rod 21 is in a vertical state.

[0065] The horizontal rod 22 is in a horizontal state and is fixedly connected below the left and right lifting rods 21 .

[0066] There are two rollers 23, which are fixedly connected to the horizontal rod 22 and can rotate around it.

[0067] The buffer assembly 3 includes a fastening ring 31 , a horizontal rotating shaft 32 , a bearing 33 and a torsion spring 34 .

[0068] The inner ring of the fastening ring 31 has a rubber layer, which is sleeved on the lifting rod 21, and the right end is fixed to the horizontal shaft 32. The fastening ring 31 has a squeezing force on the lifting rod 21, and can be adjusted to provide a friction locking force. The lifting rod 21 can only move along the axial direction when the external force exceeds the locking force. The locking force of the fastening ring 31 on the lifting rod 21 is smaller than the collision force between the self-propelled model 6 and the boat body, and larger than the lifting force generated by the hydrodynamic force of the waterproof cloth 5.

[0069] The horizontal rotating shaft 32 is a rigid cylindrical shaft, which is fixedly connected to the inner ring of the bearing 33 and is perpendicular to the longitudinal section of the hull.

[0070] The right end face of the bearing 33 is parallel to the mounting plate 1 and is fixedly connected thereto via the outer ring.

[0071] The two ends of the torsion spring 34 are fixedly connected to the fastening ring 31 and the mounting plate 1. When the lifting rod 21 is in a vertical state, the torsion spring 34 has no torsion. The torsion spring 34 has a high torsion, which can achieve: when the self-propelled aircraft model 6 is at the highest speed and the waterproof cloth 5 is fully raised, the rotation angle of the lifting rod 21 is not greater than 5°.

[0072] The fixing ring assembly 4 includes an upper fixing ring 41 and a lower fixing ring 42 .

[0073] The upper fixing ring 41 is fixed to the upper end of the lifting rod 21 and moves along with the lifting rod 21 .

[0074] The lower fixing ring 42 is sleeved on the lifting rod 21 without contact with the lifting rod 21 , and is fixedly connected to the upper end surface of the fastening ring 31 .

[0075] The waterproof cloth 5 is made of a light, ultra-thin, high-strength material, such as a carbon fiber reinforced composite material. The bottom of the waterproof cloth 5 is cut to conform to the hull and fixed to the hull. The four corners of the waterproof cloth 5 are respectively connected to the upper fixing ring 41 and the lower fixing ring 42 on the lifting rods 21 on both sides.

[0076] The waterproof cloth 5 has a certain width, which is greater than the distance between the left and right lifting rods 21, and when the lifting rods 21 move down to the lowest point, the waterproof cloth 5 is completely attached to the hull and has a certain tensile extrusion force to prevent the waterproof cloth 5 from shaking.

[0077] During initial installation, the lifting rod 21 moves down to the lowest point, and the upper fixing ring 41 is attached to the lower fixing ring 42 .

[0078] In actual working process:

[0079] First, the length of the horizontal rod 22 is adjusted to adapt to the width of the self-propelled model 6. According to the speed, underwater operation type, safety margin, etc., the length of the lifting rod 21 under the hull is adjusted to achieve the setting of the ultra-deep response height. After the adjustment is completed, the device is fixed on both sides of the self-propelled model 6.

[0080] When the self-propelled model 6 is in the underwater direct navigation test, once the bow is accidentally buried too deep, the horizontal rod 22 below the self-propelled model 6 will collide with the bottom of the pool first.

[0081] During the sliding process, the rollers 23 on the horizontal rods 22 roll, which greatly reduces the horizontal pulling force of the pool bottom on the self-propelled model 6 and avoids increasing the longitudinal tilt of the self-propelled model 6.

[0082] The squeezing between the self-model aircraft 6 and the seabed causes the lifting rod 21 to overcome the friction locking force of the fastening ring 31 and move upward.

[0083] During the collision, the lifting rod 21 carries the fastening ring 31, overcomes the torsion of the torsion spring 34, and slightly rotates around the axis of the horizontal rotation shaft 32 to achieve buffering, reduce the impact force, and protect the lifting rod 21 device.

[0084] The lifting rod 21 pulls the waterproof cloth 5 upward with the upper fixing ring 41 to unfold. At high speed, the hydrodynamic resistance generated by the waterproof cloth 5 is large, and the braking effect is obvious. At the same time, since the waterproof cloth 5 is above the hull, it will cause the hull to lift the bow.

[0085] Due to the large inertia of the boat body, the sliding braking distance is long. During the sliding in contact with the pool bottom, the lifting rod 21 gradually moves up, the braking and bow lifting forces increase step by step, and automatically match according to the depth from the bottom to achieve adaptive adjustment.

[0086] Once the hull turns to float, the lifting rod 21 is away from the bottom of the pool, the height is locked by the fastening ring 31, the unfolded height of the waterproof cloth 5 is constant, and the anti-sinking force is no longer increased. The device provides appropriate bow lifting force in a self-balancing manner to avoid excessive bow lifting force, resulting in secondary damage such as the stern touching the bottom, losing control of movement or rushing out of the water. This feature is particularly suitable for minor over-depth, which is not too serious, to avoid excessive response, causing collateral damage or interfering with the test.

[0087] Since the gliding distance is long, the bow lifting force of the device will guide the self-propelled model 6 to float to the water surface. In the gliding with longitudinal tilt on the water surface, the self-propelled model 6 will suffer greater hydrodynamic resistance, further reducing the gliding distance and avoiding touching the pool wall.

[0088] When the boat stops on the water, the fault can be repaired or the control parameters can be adjusted in the water tank as needed. The protection personnel on the boat push the lifting rod 21 down to the bottom to reset the protection device without lifting it out of the water, which simplifies the operation and greatly improves the test efficiency.

[0089] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A bottoming protection device for a self-propelled model, characterized in that: The invention comprises a self-propelled model (6), wherein mounting plates (1) are respectively fixed on both sides of the hull of the self-propelled model (6), and a support rod frame (2) is installed outside the self-propelled model (6), wherein the structure of the support rod frame (2) comprises symmetrically arranged lifting rods (21), wherein a horizontal rod (22) is arranged at the bottom of the lifting rod (21), and rollers (23) are arranged at intervals on the horizontal rod (22), and a fixing ring assembly (4) is installed on the lifting rod (21), wherein the fixing ring assembly (4) comprises an upper fixing ring (41) and a lower fixing ring (42), wherein the upper fixing ring (41) is arranged on the top surface of the lifting rod (21), the upper fixing ring (41) moves with the lifting rod (21), and the lower fixing ring (42) is sleeved in the middle of the lifting rod (21); and further comprises a mounting A buffer assembly (3) is provided between the mounting plate (1) and the lifting rod (21). The buffer assembly (3) has the following structure: it comprises a fastening ring (31) sleeved on the lifting rod (21), a horizontal rotating shaft (32) is fixed on the outer end surface of the fastening ring (31), the outer end surface of the horizontal rotating shaft (32) is fixed to the inner ring of a bearing (33), the outer end surface of the bearing (33) is parallel to the mounting plate (1), and is fixed to the mounting plate (1) by the outer ring of the bearing (33), and a torsion spring (34) is sleeved on the horizontal rotating shaft (32); it also comprises a waterproof cloth (5) attached to the hull, the bottom of the waterproof cloth (5) is cut to conform to the hull, and the four corners of the waterproof cloth (5) are respectively connected to an upper fixing ring (41) and a lower fixing ring (42) on the lifting rods (21) on both sides.

2. The bottoming protection device for a self-propelled model aircraft according to claim 1, characterized in that: The lifting rod (21) and the horizontal rod (22) are both rigid thin rods with adjustable lengths.

3. The bottoming protection device for a self-propelled model as claimed in claim 1, characterized in that: The lifting rod (21) and the horizontal rod (22) are both made of carbon fiber reinforced material.

4. The bottoming protection device for a self-propelled model aircraft according to claim 1, characterized in that: The inner ring of the fastening ring (31) is provided with a rubber layer.

5. The bottoming protection device for a self-propelled model aircraft according to claim 1, characterized in that: The fastening ring (31) exerts a squeezing force on the lifting rod (21) and is adjustable to provide a friction locking force.

6. The bottoming protection device for a self-propelled model as claimed in claim 1, characterized in that: The locking force of the fastening ring (31) on the lifting rod (21) is smaller than the collision force between the self-propelled model (6) and the boat body.

7. The bottoming protection device for a self-propelled model aircraft according to claim 1, characterized in that: The horizontal rotating shaft (32) is a rigid cylindrical shaft.

8. The bottoming protection device for a self-propelled model as claimed in claim 1, characterized in that: The waterproof cloth (5) is made of a light, ultra-thin, high-strength material.

9. An operating method of the bottoming protection device for a self-propelled model as claimed in claim 1, characterized in that: First, by adjusting the length of the horizontal rod (22), the width of the self-propelled model (6) is adapted and a protective device is installed; During the sliding process, the roller (23) on the horizontal rod (22) rolls, greatly reducing the horizontal pulling force of the pool bottom on the self-propelled model (6), thereby avoiding increasing the longitudinal tilt of the self-propelled model (6); Then, when the self-propelled aircraft model (6) is squeezed against the seabed, the lifting rod (21) is forced to overcome the friction locking force of the fastening ring (31) and move upward; During the collision, the lifting rod (21) with the fastening ring (31) overcomes the torsion of the torsion spring (34) and slightly rotates around the axis of the horizontal rotation shaft (32) to achieve buffering, reduce the impact force, and protect the lifting rod (21) device; Then, the lifting rod (21) pulls the waterproof cloth (5) upward with the upper fixing ring (41) to unfold; subsequently, once the boat body turns to float, the lifting rod (21) is away from the bottom of the pool, and the height is locked by the fastening ring (31), the unfolding height of the waterproof cloth (5) is constant, and the anti-sinking force is no longer increased; Finally, when the boat body stops on the water surface, the fault can be repaired or the control parameters can be adjusted in the water pool as needed, and the protection personnel on the boat pushes the lifting rod (21) down to the bottom to achieve the reset of the protection device.

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