Experimental equipment mounting platform with damping function

Abstract

The invention discloses an experimental equipment mounting platform with a damping function, belongs to the technical field of mounting platforms, and provides the following scheme that the experimental equipment mounting platform comprises a horizontal damping mechanism, a vertical damping mechanism and a frame fixing and connecting device; the frame fixing and connecting device comprises an equipment end first fastening support, a frame fastening support and an equipment end second fastening support, so that the frame fixing and connecting device is adaptive to ship model frames of square tubes and round tubes with different sizes; the device mainly aims at installation of equipment in a ship model in a ship model slamming experiment, the equipment can be arranged on a non-orthogonal frame structure with certain angle deflection through cooperation of the frame fastening support and the supporting mechanism, and the device is suitable for multi-scale square tube and round tube frames; according to the three-degree-of-freedom damping structure, application and arrangement of precise instruments and various structures are limited by instantaneous high overload in a ship model experiment, the operability of the experiment can be greatly improved through the three-degree-of-freedom damping structure, the service life of equipment can be greatly prolonged through the three-degree-of-freedom damping structure, and the damage risk of the equipment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of installation platforms, in particular to an experimental equipment installation platform with a shock-absorbing function. Background Art

[0002] In the water impact test, the model is generally a plate-frame structure, and the internal frame cannot directly provide an installation position for the equipment. In addition, due to design requirements or manufacturing errors, the angles of each frame are non-orthogonal, and square tubes and round tubes are mixed in some positions, so the layout and installation of the equipment are quite difficult.

[0003] On the other hand, the internal equipment installed in the model can easily reach an instantaneous overload of 5-10G under the combined effects of the model's water-impact deceleration and internal structural vibration, increasing the risk of equipment damage and greatly limiting the choice of equipment.

[0004] How to design an installation platform suitable for narrow and complex frame structures and reduce equipment overload through shock-absorbing design is an important research direction for optimizing experimental methods and extending equipment service life. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art that the model is generally a plate-frame structure, the internal frame cannot directly provide an installation position for the equipment, and due to design requirements or manufacturing errors, the angles of each frame and the internal equipment installed in the model are easily subject to an instantaneous overload of 5-10G under the combined action of the model's water-impact deceleration and internal structure vibration, thereby increasing the risk of equipment damage and greatly limiting the equipment selection. The proposed experimental equipment installation platform has a shock-absorbing function.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An experimental equipment installation platform with a shock-absorbing function, including a horizontal shock-absorbing mechanism, a vertical shock-absorbing mechanism, and a frame fixing connection device;

[0008] The frame fixing connection device includes a first tightening support at the equipment end, a frame tightening support and a second tightening support at the equipment end, so that it can adapt to ship model frames of square tubes and round tubes of different sizes. The first tightening support at the equipment end and the second tightening support at the equipment end are obliquely connected to the frame tightening support and the adapter plate at the support end of the vertical shock absorbing mechanism;

[0009] The frame fixing connection device is fixed to the internal frame of the model where the equipment needs to be installed, and the other end is connected to the vertical shock absorbing mechanism. The vertical shock absorbing mechanism is connected to the horizontal shock absorbing mechanism through the hinged square rod connection device, and the equipment is installed on the horizontal shock absorbing mechanism;

[0010] The horizontal shock absorption mechanism is provided with an omnidirectional shock absorption device in the horizontal plane. The device is installed on the housing of the horizontal shock absorption mechanism. The omnidirectional shock absorption device in the horizontal plane includes a fixed base, a central frustum, a spring group, a transmission device and a housing. The bottom of the central frustum is provided with a slot.

[0011] The transmission device includes a base end pulley, a spring end pulley, a spring end gear, a base end gear and a base end traction rope, and the base end gear is meshed with the spring end gear;

[0012] The vertical shock absorbing mechanism comprises a shock absorbing spring slider device and a variable friction damping device, and the shock absorbing spring slider device is connected to a threaded hole reserved on a fixed base of the horizontal shock absorbing mechanism through a hinged square rod.

[0013] Preferably, the fixed base is designed to be a shallow cylindrical shape, with circular protrusions and threaded holes on both sides of the middle part, a lifting ring installed on the upper protrusion to connect the traction rope, and the back is connected to the articulated square rod of the vertical shock absorbing mechanism by bolts.

[0014] Preferably, the middle cone is connected to the base of the annular shell, which acts as a limiter for the fixed base and generates a pre-tightening force on the contact surface, providing friction damping for the horizontal shock absorbing mechanism, filtering out the influence of small vibrations and accelerating the stabilization speed of the system. The center of the middle cone has a hole, and the upper and lower end faces are rounded. The traction rope passes through the center hole to connect the fixed base and the transmission device.

[0015] Preferably, the base end gear and the spring end gear in the transmission device are both installed on the middle circular table, the base end pulley is connected to the fixed base through the middle circular table traction rope, the base end gear is installed on the pulley, cooperates with the spring end gear, and is connected to the spring group through the spring end pulley, thereby realizing omnidirectional shock absorption capability in the horizontal plane and providing a higher elastic coefficient in a limited space.

[0016] Preferably, the shell includes an upper cover shell and a base limiting ring. The upper cover shell is designed to be barrel-shaped. The barrel-shaped upper cover shell side is used to connect the equipment. The base limiting ring is installed from bottom to top to the middle cone to play a vertical limiting role.

[0017] Preferably, the shock-absorbing spring slider device includes a support end adapter plate, a vertical shock-absorbing spring, a slider end spring seat, a linear bearing, a slider, an optical axis and a base;

[0018] The side of the adapter plate at the support end is connected to the frame fixed connection device, and the optical axis and one end of the vertical shock-absorbing spring are fixedly installed below. The other end of the vertical shock-absorbing spring is connected to the spring seat at the slider end. The spring seat at the slider end, the linear bearing and the slider are installed in combination, and the base is fixed to the other end of the optical axis.

[0019] Preferably, the variable friction damping device includes a friction damping device, a pulley bolt, a pulley, a constant-force spring, and a traction rope. When the variable friction damping device is in the equilibrium position, the constant-force spring tightens the bolt, providing higher friction damping. As the slider moves away from the equilibrium position, the traction rope loosens the pulley bolt, gradually reducing the damping to zero. This not only helps filter out minor vibrations, but also provides a higher restoring force, improving the shock absorption effect.

[0020] The friction damping device is a fastener with one end hinged and the other end having a threaded hole. The friction damping device changes the friction damping by tightening with bolts. One end of the two traction ropes is connected to the constant force spring fixed on the slider, and the other end is connected to the support end adapter plate and the base through pulleys. The middle part is fixed on the pulley of the pulley bolt, and the constant force spring tightens the pulley friction damping device in the equilibrium position.

[0021] Preferably, arc-shaped grooves are provided on the end surfaces of the first fastening support at the equipment end and the second fastening support at the equipment end, so that the angles of the structure and the frame fastening support can be adjusted and can be installed on a non-orthogonal frame.

[0022] Preferably, the first fastening support at the equipment end, the frame metal fastening support and the second fastening support at the equipment end are all designed as separate structures, which can be disassembled and installed, and can achieve deflection at a certain angle.

[0023] Compared with the prior art, the present invention provides an experimental equipment installation platform with a shock-absorbing function, which has the following beneficial effects:

[0024] The present invention is mainly aimed at the installation of equipment inside ship models during ship model slamming experiments. Through the cooperation of frame tightening supports and support mechanisms, the equipment can be arranged on a non-orthogonal frame structure with a certain angle of deflection, and is applicable to square tube and circular tube frames of multiple scales. The present invention provides a three-degree-of-freedom shock-absorbing structure. The instantaneous high overload in ship model experiments limits the application and arrangement of precision instruments and various structures. The three-degree-of-freedom shock-absorbing structure can greatly improve the operability of the experiment and the service life of the equipment, and reduce the risk of equipment damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall structure of the horizontal shock absorbing mechanism of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal transmission structure of the horizontal shock absorbing platform of the present invention;

[0028] Figure 4 Schematic diagram of the vertical shock absorbing mechanism of the present invention;

[0029] Figure 5 This is a structural schematic diagram of the frame fixing connection device of the present invention.

[0030] In the figure: 1. Horizontal shock absorption mechanism; 11. Fixed base; 12. Central frustum; 121. Slotted hole; 13. Spring assembly; 14. Transmission device; 141. Pulley at base end; 142. Pulley at spring end; 143. Gear at spring end; 144. Gear at base end; 145. Pull rope at base end; 15. Housing; 151. Upper cover housing; 152. Base limiting ring;

[0031] 2. Vertical shock-absorbing mechanism; 21. Shock-absorbing spring slider assembly; 211. Support end adapter plate; 212. Vertical shock-absorbing spring; 213. Slider end spring seat; 214. Linear bearing; 215. Slider; 216. Optical axis; 217. Base; 22. Variable friction damping device; 221. Friction damping device; 222. Pulley bolt; 223. Pulley; 224. Constant force spring; 225. Traction rope;

[0032] 3. Frame fixing connection device; 31. First tightening support at the equipment end; 32. Frame tightening support; 33. Second tightening support at the equipment end. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0035] like Figure 1-Figure 5 As shown, the experimental equipment installation platform with shock absorption function, the horizontal shock absorption mechanism 1, the vertical shock absorption mechanism 2 and the frame fixing connection device 3;

[0036] The frame fixing connection device 3 includes a first tightening support 31 at the equipment end, a frame tightening support 32 and a second tightening support 33 at the equipment end, so that it can adapt to ship model frames of square tubes and round tubes of different sizes. The first tightening support 31 at the equipment end and the second tightening support 33 at the equipment end are tilted to connect the frame tightening support 32 and the support end adapter plate 211 of the vertical shock absorbing mechanism 2. The end surfaces of the first tightening support 31 at the equipment end and the second tightening support 33 at the equipment end are opened with arc grooves, which can adjust the angle of the structure and the frame tightening support 32 and can be installed on non-orthogonal frames; the equipment end The first fastening support 31, the frame metal fastening support, and the second fastening support 33 at the equipment end are all designed as separate structures, enabling disassembly and installation, and can achieve a certain angle of deflection. Radial holes are opened, and the first fastening support 31 at the equipment end, the frame metal fastening support, and the second fastening support 33 at the equipment end are clamped by screws, enabling the connection of square tubes and round tubes of various sizes. When multiple frame fixing connection devices 3 are used and installed in a non-orthogonal frame, the vertical vibration damping mechanism 2 can be ensured to be in the plumb direction and can be smoothly installed with the horizontal vibration damping mechanism 1.

[0037] The frame fixing connection device 3 is fixed to the internal frame of the model where the equipment needs to be installed. The other end is connected to the vertical shock absorbing mechanism 2. The vertical shock absorbing mechanism 2 is connected to the horizontal shock absorbing mechanism 1 through a hinged square rod connection device. The equipment is installed on the horizontal shock absorbing mechanism 1.

[0038] The horizontal vibration damping mechanism 1 is provided with an omnidirectional vibration damping device in a horizontal plane. The device is mounted on the housing 15 of the horizontal vibration damping mechanism 1. The omnidirectional vibration damping device in a horizontal plane includes a fixed base 11, a central circular table 12, a spring assembly 13, a transmission device 14 and a housing 15. A slot 121 is provided at the bottom of the central circular table 12.

[0039] The fixed base 11 is designed to be a shallow cylindrical shape, with circular protrusions on both sides of the middle part and threaded holes. The upper protrusion is installed with a lifting ring to connect the traction rope 225, and the back is connected to the hinged square rod of the vertical shock absorbing mechanism 2 by bolts;

[0040] The central frustum 12 is connected to the base 217 of the annular housing 15, limiting the fixed base 11 and generating a preload force on the contact surface, providing friction damping for the horizontal shock absorbing mechanism 1, filtering out the influence of small vibrations and accelerating the stabilization speed of the system. In addition, overload and weightlessness will further increase the pressure between the contact surfaces, increasing friction damping, so that the shock absorption system quickly enters a stable state after the acceleration peak, thereby improving the shock absorption effect. The central frustum 12 has a hole in the center and is rounded at the upper and lower end surfaces. The traction rope 225 passes through the central hole to connect the fixed base 11 and the transmission device 14;

[0041] The shell 15 includes an upper cover shell 151 and a base limiting ring 152. The upper cover shell 151 is designed to be barrel-shaped. The side of the barrel-shaped upper cover shell 151 is used to connect the equipment. The base limiting ring 152 is installed from bottom to top to the middle cone 12 to play a vertical limiting role. When the fixed base 11 and the middle cone 12 are offset, the displacement in any direction in the horizontal plane can be transmitted to the upper pulley 223 end through the traction rope 225 and converted into rotation. The transmission device 14 amplifies the stroke of the traction rope 225 and makes all springs enter the working state synchronously, so as to increase the spring stiffness in the smallest possible space and improve the shock absorption effect.

[0042] The transmission device 14 includes a base end pulley 141, a spring end pulley 142, a spring end gear 143, a base end gear 144 and a base end traction rope 145, and the base end gear 144 is meshed with the spring end gear 143;

[0043] The base end gear 144 and the spring end gear 143 in the transmission device 14 are both mounted on the middle truncated cone 12. The base end pulley 141 is connected to the fixed base 11 via the traction rope 225 of the middle truncated cone 12. The base end gear 144 is mounted on the pulley 223, cooperates with the spring end gear 143, and is connected to the spring group 13 via the spring end pulley 142, thereby achieving omnidirectional shock absorption capability in the horizontal plane and providing a higher elastic coefficient in a limited space.

[0044] The vertical shock absorbing mechanism 2 includes a shock absorbing spring slider device 21 and a variable friction damping device 22. The variable friction damping device 22 includes a friction damping device 221, a pulley bolt 222, a pulley 223, a constant force spring 224 and a traction rope 225. The variable friction damping device 22 is tightened by the constant force spring 224 in the equilibrium position to provide higher friction damping. As the slider 215 moves away from the equilibrium position, the traction rope 225 relaxes the pulley bolt 222 and the damping gradually drops to zero. On the one hand, it is beneficial for filtering small vibrations, and on the other hand, it provides a higher return force and improves the shock absorption effect. The friction damping device 221 is a fastener with a hinged end and a threaded hole at the other end. The friction damping device 221 changes the friction damping by tightening with bolts. One end of the two traction ropes 225 is connected to the constant force spring 224 fixed on the slider 215, and the other end is connected to the support end adapter plate 211 and the base 217 through the pulley 223. The middle part is fixed to the pulley 223 of the pulley bolt 222. The constant force spring 224 tightens the pulley 223 friction damping device 221 in the equilibrium position.

[0045] The shock-absorbing spring slider device 21 includes a support end adapter plate 211, a vertical shock-absorbing spring 212, a slider end spring seat 213, a linear bearing 214, a slider 215, an optical axis 216 and a base 217; the side of the support end adapter plate 211 is connected to the frame fixed connection device 3, and the optical axis 216 and one end of the vertical shock-absorbing spring 212 are fixedly installed below, and the other end of the vertical shock-absorbing spring 212 is connected to the slider end spring seat 213, the slider end spring seat 213, the linear bearing 214 and the slider 215 are installed in combination, and the base 217 is fixed to the other end of the optical axis 216, and the shock-absorbing spring slider device 21 is connected to the threaded hole reserved on the fixed base 11 of the horizontal shock-absorbing mechanism 1 through a hinged square rod.

[0046] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. Experimental equipment installation platform with shock absorption function, characterized in that: It comprises a horizontal shock absorbing mechanism (1), a vertical shock absorbing mechanism (2) and a frame fixing connection device (3); The frame fixing connection device (3) comprises a first tightening support (31) at the equipment end, a frame tightening support (32) and a second tightening support (33) at the equipment end, so as to adapt to ship model frames of square tubes and round tubes of different sizes. The first tightening support (31) at the equipment end and the second tightening support (33) at the equipment end are obliquely connected to the frame tightening support (32) and the support end adapter plate (211) of the vertical shock absorbing mechanism (2); The frame fixing connection device (3) is fixed to the internal frame of the model where the equipment is to be installed, and the other end is connected to the vertical shock absorbing mechanism (2). The vertical shock absorbing mechanism (2) is connected to the horizontal shock absorbing mechanism (1) through the hinged square rod connection device, and the equipment is installed on the horizontal shock absorbing mechanism (1); A horizontal plane omnidirectional shock absorbing device is provided in the horizontal shock absorbing mechanism (1), and the device is installed on a housing (15) of the horizontal shock absorbing mechanism (1). The horizontal plane omnidirectional shock absorbing device comprises a fixed base (11), a middle round table (12), a spring group (13), a transmission device (14) and a housing (15). A slot (121) is provided at the bottom of the middle round table (12). The transmission device (14) includes a base end pulley (141), a spring end pulley (142), a spring end gear (143), a base end gear (144) and a base end traction rope (145), wherein the base end gear (144) is meshed with the spring end gear (143); The vertical shock absorbing mechanism (2) comprises a shock absorbing spring slider device (21) and a variable friction damping device (22), and the shock absorbing spring slider device (21) is connected to a threaded hole reserved on a fixed base (11) of the horizontal shock absorbing mechanism (1) via a hinged square rod.

2. The experimental equipment installation platform with shock absorption function according to claim 1, characterized in that: The fixed base (11) is designed to be a shallow cylindrical shape, with circular protrusions and threaded holes provided on both sides of the middle portion, a lifting ring installed on the upper protrusion to connect the traction rope (225), and the back side is connected to the hinged square rod of the vertical shock absorbing mechanism (2) through bolts.

3. The experimental equipment installation platform with shock absorption function according to claim 2, characterized in that: The central cone (12) is connected to the base (217) of the annular shell (15), serves as a limiter for the fixed base (11), and generates a preload force on the contact surface, providing friction damping for the horizontal shock absorbing mechanism (1). The central cone (12) has a central opening, and is rounded at the upper and lower end surfaces. The traction rope (225) passes through the central opening to connect the fixed base (11) and the transmission device (14).

4. The experimental equipment installation platform with shock absorption function according to claim 3, characterized in that: The base end gear (144) and the spring end gear (143) in the transmission device (14) are both mounted on the middle truncated cone (12); the base end pulley (141) is connected to the fixed base (11) via a traction rope (225) of the middle truncated cone (12); the base end gear (144) is mounted on the pulley (223), cooperates with the spring end gear (143), and is connected to the spring group (13) via the spring end pulley (142), thereby achieving omnidirectional shock absorption capability in the horizontal plane and providing a higher elastic coefficient in a limited space.

5. The experimental equipment installation platform with shock absorption function according to claim 4, characterized in that: The housing (15) comprises an upper cover housing (151) and a base limiting ring (152). The upper cover housing (151) is designed to be barrel-shaped. The barrel-shaped upper cover housing (151) is used to connect equipment. The base limiting ring (152) is installed from bottom to top on the middle frustum (12) to play a vertical limiting role.

6. The experimental equipment installation platform with shock absorption function according to claim 5, characterized in that: The shock-absorbing spring slider device (21) comprises a support end adapter plate (211), a vertical shock-absorbing spring (212), a slider end spring seat (213), a linear bearing (214), a slider (215), an optical axis (216) and a base (217); The side of the support end adapter plate (211) is connected to the frame fixed connection device (3), and the optical axis (216) and one end of the vertical shock-absorbing spring (212) are fixedly installed below. The other end of the vertical shock-absorbing spring (212) is connected to the slider end spring seat (213). The slider end spring seat (213), the linear bearing (214) and the slider (215) are assembled and installed. The base (217) is fixed to the other end of the optical axis (216).

7. The experimental equipment installation platform with shock absorption function according to claim 6, characterized in that: The variable friction damping device (22) comprises a friction damping device (221), a pulley bolt (222), a pulley (223), a constant force spring (224) and a traction rope (225); The friction damping device (221) is a fastener with one end hinged and the other end having a threaded hole. The friction damping device (221) changes the friction damping by fastening with bolts. One end of two traction ropes (225) is connected to a constant force spring (224) fixed on a slider (215), and the other end is connected to the support end adapter plate (211) and the base (217) through a pulley (223). The middle part is fixed on the pulley (223) of the pulley bolt (222). The constant force spring (224) fastens the pulley (223) and the friction damping device (221) in a balanced position.

8. The experimental equipment installation platform with shock absorption function according to claim 7, characterized in that: The end surfaces of the first equipment end fastening support (31) and the second equipment end fastening support (33) are provided with arc grooves, which can adjust the angles of the structure and the frame fastening support (32) and can be installed on a non-orthogonal frame.

9. The experimental equipment installation platform with shock absorption function according to claim 8, characterized in that: The first fastening support (31) at the equipment end, the frame metal fastening support and the second fastening support (33) at the equipment end are all designed as separate structures, and can be disassembled and installed.

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