A rotating multi-link folding mechanism

Abstract

The present invention discloses a rotating multi-link folding mechanism, which belongs to the technical field of landing devices, and includes a mounting base, wherein a rotatable rotating beam-column assembly and a lower guide wheel are coaxially arranged in the middle of the mounting base, a rotatable upper swing wheel assembly is arranged above the rotating beam-column assembly, and connecting rod assemblies are symmetrically arranged on both sides of the rotating beam-column assembly, wherein the connecting rod assembly includes a swing oil cylinder with one end hinged to the mounting base, the output end of the swing oil cylinder is hinged to one end of a first connecting rod, a connecting pin is passed through the middle of the rotating beam-column assembly, the middle part of the first connecting rod is hinged to the connecting pin, the other end of the first connecting rod is hinged to a second connecting rod, and the other end of the second connecting rod is hinged to the mounting base. The rotating multi-link folding mechanism of the present invention has a simple and compact structure, a small volume and weight, and can be used in a landing device.

Description

Technical Field

[0001] The present invention belongs to the technical field of positioning devices, and more specifically, relates to a rotating multi-link folding mechanism. Background Art

[0002] In order to avoid being discovered by the enemy, underwater submersibles are usually at a deeper safe depth. Under great depth conditions, submersibles cannot communicate with the outside world. The communication system releases the floating body equipped with various functional modules out of the water through the retracting and releasing device and the landing device. The floating body is towed by the towline and floats to the surface of the water to perform the communication task by relying on its own hydrodynamic performance. After completing the task, the floating body is retrieved and stored on the submersible through the coordinated action of the retracting and releasing device and the landing device.

[0003] In the communication system, the retractable and landing devices work together to release, recover and store the floating body. To realize the function of the landing device, a compact folding mechanism is required to assist the landing device to complete its complex movements. There are many mechanisms that can realize the folding action, such as connecting rod mechanisms, worm gear mechanisms, gear transmission mechanisms, etc., which have complex structures and are relatively large in size and weight. Since the overall system provides limited space for the retractable and landing devices of the communication system. The existing folding mechanism is difficult to use on the landing device of the communication system. Summary of the invention

[0004] In view of the defects of the prior art, the purpose of the present invention is to provide a rotating multi-link folding mechanism, aiming to solve the problem that the existing folding mechanism is relatively large in size and weight and difficult to use on the current communication system landing device.

[0005] To achieve the above-mentioned objectives, the present invention provides a rotating multi-link folding mechanism, including a mounting base, a rotatable rotating beam-column assembly and a lower guide wheel are coaxially provided in the middle of the mounting base, a rotatable upper swing wheel assembly is provided above the rotating beam-column assembly, connecting rod assemblies are symmetrically provided on both sides of the rotating beam-column assembly, the connecting rod assembly includes a swinging oil cylinder with one end hinged to the mounting base, the connecting rod assembly also includes a first connecting rod and a second connecting rod, the output end of the swinging oil cylinder is hinged to one end of the first connecting rod, a connecting pin is passed through the middle of the rotating beam-column assembly, the middle part of the first connecting rod is hinged to the connecting pin, the other end of the first connecting rod is hinged to the second connecting rod, the other end of the second connecting rod is hinged to the mounting base, and when the output end of the swinging oil cylinder is extended or retracted, the rotating beam-column assembly can be driven to rotate by the first connecting rod and the second connecting rod.

[0006] Furthermore, the upper swing wheel assembly includes a swing frame, a fixed shaft is passed through the swing frame, a rotatable upper swing wheel is provided on the fixed shaft, a sleeve is fixed to the rotating beam-column assembly and is rotatably connected to the swing frame, the swing frame can drive the upper swing wheel to rotate along the axis of the sleeve, and the center circles corresponding to the bottom of the wheel grooves of the upper swing wheel and the lower guide wheel are equal and tangent to the axis of the sleeve.

[0007] Furthermore, beam-column support rings are symmetrically provided on the mounting base, a rotating support shaft is passed between the beam-column support rings, the rotating support shaft is rotatably connected to the lower guide wheel via a first bushing, the beam-column support ring is rotatably connected to the rotating beam-column assembly via a second bushing, positioning retaining rings are provided at both ends of the first bushing and the second bushing, and an axis end retaining ring is provided at the end of the rotating support shaft.

[0008] Furthermore, a limiting step is provided on the outer wall of the sleeve, a positioning baffle is fitted on the limiting step, the upper end surface of the positioning baffle fits the lower end surface of the swing frame, a positioning sleeve is provided between the sleeve and the swing frame, and the sleeve and the swing frame are limited by a positioning screw.

[0009] Furthermore, a rotatable guardrail assembly is coaxially provided outside the upper swing wheel, and the guardrail assembly includes a guardrail bracket mounted on the fixed shaft, a guide wheel is hinged on the guardrail bracket, and torsion springs are mounted on both ends of the fixed shaft, one end of the torsion spring is fixed to the swing frame, and the angle of the other end of the torsion spring is arranged to fit the side wall of the guardrail bracket.

[0010] Furthermore, the swing cylinder, the first connecting rod and the second connecting rod are all hinged with a connecting piece of the same structure, and the connecting piece includes a connecting shaft, the connecting shaft is provided with a connecting sleeve, and connecting baffles are provided at both ends of the connecting sleeve. A limiting groove is opened at the end of the connecting shaft, and a limiting baffle is clamped in the limiting groove.

[0011] Furthermore, a hinged portion is provided in the middle portion of the first connecting rod, and a limit sleeve for hinged connection with the connecting pin is fitted on the inner wall of the hinged portion, and a limit ring for limiting the installation of the limit sleeve is provided on the connecting pin; a positioning groove for positioning the connecting pin for installation with the rotating beam-column assembly is provided on the connecting pin, and a locking block piece is provided in the positioning groove, and an axis end limit ring is also provided at the end of the connecting pin.

[0012] Furthermore, a connecting seat for connecting the swing cylinder is fixed on the side wall of the mounting base.

[0013] Furthermore, the mounting base is provided with a connection port for connecting with the positioning device.

[0014] In general, compared with the prior art, the above technical solution conceived by the present invention drives the first connecting rod and the second connecting rod to drive the rotating beam-column assembly to rotate, thereby simplifying the structure of the existing folding mechanism, reducing the weight and volume, and making the structure compact, so that it can be used on the landing device; a rotatable upper swing wheel assembly is provided, which can automatically adjust the angle according to the working condition of the towing cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the rotating multi-link folding mechanism provided by the present invention;

[0016] Figure 2 It is a structural schematic diagram of the rotating multi-link folding mechanism provided by the present invention;

[0017] Figure 3 This is a reference diagram of the use state of the rotating multi-link folding mechanism provided by the present invention;

[0018] Figure 4 yes Figure 1 Sectional view at AA;

[0019] Figure 5 yes Figure 1 Sectional view at the middle BB;

[0020] Figure 6 yes Figure 1 Sectional view at CC;

[0021] Figure 7 yes Figure 1 Sectional view at DD in the middle.

[0022] The structures corresponding to the numbers in the figure are: 1-mounting base, 2-rotating beam-column assembly, 21-sleeve, 22- Positioning baffle, 23-positioning sleeve, 24-positioning screw, 3-upper swing wheel assembly, 31-swing frame, 32-fixed shaft, 33-upper swing wheel, 34-torsion spring, 4-lower guide wheel, 5-connecting rod assembly, 51-swing cylinder, 52-first connecting rod, 521-hinge part, 522-limiting sleeve, 53-second connecting rod, 6-connecting pin, 61-limiting ring, 62-positioning baffle, 63-axis end limiting retaining ring, 7-beam column support ring, 8-rotating support shaft, 81-axis end retaining ring, 9-first sleeve, 10-second sleeve, 11-positioning retaining ring, 12-guardrail assembly, 121-guardrail bracket, 122-guide wheel, 13-connecting piece, 131-connecting shaft, 132-connecting sleeve, 133-connecting baffle, 134-limiting baffle, 14-connecting seat, 15-connecting port. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] See also Figures 1 to 7 The present invention provides a rotating multi-link folding mechanism, which is used to connect with a landing device and tow a towing cable to collect and release a floating body, and comprises: a mounting base 1, a rotatable rotating beam-column assembly 2 and a lower guide wheel 4 are coaxially arranged in the middle of the mounting base 1, a rotatable upper swing wheel assembly 3 is arranged above the rotating beam-column assembly 2, and connecting rod assemblies 5 are symmetrically arranged on both sides of the rotating beam-column assembly 2. The connecting rod assembly 5 is used to drive the rotating beam-column assembly 2 to rotate. Specifically, the connecting rod assembly 5 comprises a swinging oil cylinder 51 with one end hinged to the mounting base 1, and the connecting rod assembly 5 It also includes a first connecting rod 52 and a second connecting rod 53. The output end of the swing cylinder 51 is hinged to one end of the first connecting rod 52. A connecting pin 6 is passed through the middle of the rotating beam-column assembly 2. The middle part of the first connecting rod 52 is hinged to the connecting pin 6. The other end of the first connecting rod 52 is hinged to the second connecting rod 53. The other end of the second connecting rod 53 is hinged to the mounting base 1. When the output end of the swing cylinder 51 is extended or retracted, the rotating beam-column assembly 2 can be driven to rotate through the first connecting rod 52 and the second connecting rod 53. The following is a detailed description of each component in conjunction with a specific embodiment.

[0025] Specifically, the upper swing wheel assembly 3 includes a swing frame 31, a fixed shaft 32 is passed through the swing frame 31, and a rotatable upper swing wheel 33 is provided on the fixed shaft 32. In order to realize the automatic adjustment of the towing cable working angle, the upper swing wheel assembly 3 is rotatably connected to the rotating beam column assembly 2. Specifically, a sleeve 21 rotatably connected to the swing frame 31 is fixed on the rotating beam column assembly 2. The swing frame 31 can drive the upper swing wheel 33 to rotate along the axis of the sleeve 21. The center circles corresponding to the bottom of the wheel groove of the upper swing wheel 33 and the lower guide wheel 4 are equal and They are all tangent to the axis of the sleeve 21. Furthermore, the outer wall of the sleeve 21 is provided with a limiting step, and a positioning baffle 22 is fitted on the limiting step. The upper end surface of the positioning baffle 22 fits the lower end surface of the swing frame 31. A positioning sleeve 23 is provided between the sleeve 21 and the swing frame 31, and the sleeve 21 and the swing frame 31 are limited by a positioning screw 24. Before work, one end of the towing cable is fixed to the reel of the retracting and releasing device, and the other end passes through the sleeve 21 through the wheel groove of the lower guide wheel 4 and is clamped in the wheel groove of the upper swing wheel 33 to connect with the floating body. During work, the swing oil cylinder 51 is extended and retracted to provide power to drive the first connecting rod 52 and the second connecting rod 53 to drive the rotating beam column assembly 2 to rotate to achieve the folding and lifting action. The upper swing wheel 33 drives the floating body to enter the predetermined position of the landing device through the towing cable, and assists other components of the landing device to achieve the purpose of capturing and storing the floating body.

[0026] In order to prevent the rotating beam-column assembly 2 from getting stuck during rotation, beam-column support rings 7 are symmetrically arranged on the mounting base 1, and a rotating support shaft 8 is passed between the beam-column support rings 7. The rotating support shaft 8 is rotatably connected to the lower guide wheel 4 through a first bushing 9, and the beam-column support ring 7 is rotatably connected to the rotating beam-column assembly 2 through a second bushing 10. In order to facilitate the installation and positioning of the bushings, positioning retaining rings 11 are provided at both ends of the first bushing 9 and the second bushing 10. At the same time, in order to prevent the components on the rotating support shaft from slipping, a shaft end retaining ring 81 is provided at the end of the rotating support shaft 8.

[0027] In order to limit the position of the towing cable during operation, a rotatable guardrail assembly 12 is coaxially provided outside the upper swing wheel 33. The guardrail assembly 12 includes a guardrail bracket 121 mounted on the fixed shaft 32. A guide wheel 122 is hinged on the guardrail bracket 121. When the towing cable is passed through, it is located between the wheel grooves of the upper swing wheel 33 and the guide wheel. Torsion springs 34 are mounted on both ends of the fixed shaft 32. One end of the torsion spring 34 is fixed to the swing frame 31, and the angle of the other end of the torsion spring 34 is arranged to fit the side wall of the guardrail bracket 121. The rotation angle of the guardrail assembly 12 is controlled by the torsion spring 34.

[0028] In order to simplify the structure, the swing cylinder 51, the first connecting rod 52 and the second connecting rod 53 are all hinged with a connecting member 13 of the same structure. Specifically, the connecting member 13 includes a connecting shaft 131, and a connecting shaft sleeve 132 is provided outside the connecting shaft 131. In order to limit the installation of the connecting shaft sleeve 132, connecting baffles 133 are provided at both ends of the connecting shaft sleeve 132. A limiting groove is opened at the end of the connecting shaft 131, and a limiting baffle 134 is clamped in the limiting groove.

[0029] The connecting rod assembly 5 is a component that provides driving force. In order to facilitate installation and positioning, a hinge part 521 is provided in the middle of the first connecting rod 52. The inner wall of the hinge part 521 is fitted with a limiting sleeve 522 for hinged connection with the connecting pin 6. The connecting pin 6 is provided with a limiting ring 61 for limiting the installation of the limiting sleeve 522. The connecting pin 6 is provided with a positioning groove for positioning with the rotating beam-column assembly 2. The positioning groove is provided with a positioning baffle 62, and the end of the connecting pin 6 is also provided with a shaft end limiting baffle 63. At the same time, in order to facilitate the installation of the swing cylinder 51 and the mounting base 1, a connecting seat 14 for connecting the swing cylinder 51 is fixed on the side wall of the mounting base 1. In order to quickly install and position with the landing device, a connecting port 15 for connecting with the landing device is provided on the mounting base 1.

[0030] Since the folding mechanism needs to be used in a deep sea environment of 0m to 1000m, in order to improve the service life, the upper swing wheel assembly 3 is made of titanium alloy material. Specifically, in this embodiment, the upper swing wheel assembly 3 is made of TC4; the mounting base 1, the connecting shaft 131, the connecting seat 14, the rotating beam column assembly 2, the lower guide wheel 4, the swing cylinder 51, the first connecting rod 52, the second connecting rod 53, the connecting pin 6, the beam column support ring 7 and the rotating support shaft 8 are all made of seawater resistant stainless steel material. Specifically, In this embodiment, the mounting base 1, the connecting base 14, the rotating beam-column assembly 2, the lower guide wheel 4, the swing cylinder 51, the first connecting rod 52, the second connecting rod 53 and the beam-column support ring 7 are all made of 1Cr18Ni9Ti, and the connecting shaft 131, the connecting pin shaft 6 and the rotating support shaft 8 are all made of 0Cr17Ni4Cu4Nb; the rotating support shaft 8 and the connecting pin shaft 6 are sprayed with wear-resistant ceramic material at their hinged contact parts; the bushings, baffles, baffle rings, etc. at each hinge are made of aluminum bronze QAl9-4.

[0031] When the rotating multi-link folding mechanism of the present invention is used, the movable end of the towing cable is connected to the floating body, and the other end passes through the upper swing wheel 33, passes through the sleeve 21, and is connected to the reel of the retracting device through the lower guide wheel 4. Its working principle is that the swing oil cylinder 51 is extended and retracted to provide power to drive the first connecting rod 52 and the second connecting rod 53 to drive the rotating beam column assembly 2 around the beam column support ring 7 to achieve folding and lifting actions, and the upper swing wheel 33 drives the floating body to enter the predetermined position of the landing device through the towing cable, and assists other components of the landing device to achieve the purpose of capturing and storing the floating body.

[0032] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotating multi-link folding mechanism, characterized in that: The invention comprises a mounting base (1), wherein a rotatable rotating beam-column assembly (2) and a lower guide wheel (4) are coaxially arranged in the middle of the mounting base (1), a rotatable upper swing wheel assembly (3) is arranged above the rotating beam-column assembly (2), connecting rod assemblies (5) are symmetrically arranged on both sides of the rotating beam-column assembly (2), the connecting rod assembly (5) comprises a swing oil cylinder (51) having one end hinged to the mounting base (1), the connecting rod assembly (5) further comprises a first connecting rod (52) and a second connecting rod (53), the swing oil cylinder (51) ) is hinged to one end of a first connecting rod (52); a connecting pin (6) is passed through the middle of the rotating beam-column assembly (2); a middle portion of the first connecting rod (52) is hinged to the connecting pin (6); a second connecting rod (53) is hinged to the other end of the first connecting rod (52); the other end of the second connecting rod (53) is hinged to the mounting base (1); and when the output end of the swing oil cylinder (51) is extended or retracted, the rotating beam-column assembly (2) can be driven to rotate through the first connecting rod (52) and the second connecting rod (53).

2. The rotating multi-link folding mechanism according to claim 1, characterized in that: The upper swing wheel assembly (3) comprises a swing frame (31), a fixed shaft (32) is passed through the swing frame (31), a rotatable upper swing wheel (33) is provided on the fixed shaft (32), a sleeve (21) rotatably connected to the swing frame (31) is fixed on the rotating beam column assembly (2), the swing frame (31) can drive the upper swing wheel (33) to rotate along the axis of the sleeve (21), and the center circles corresponding to the bottom of the wheel grooves of the upper swing wheel (33) and the lower guide wheel (4) are equal and tangent to the axis of the sleeve (21).

3. The rotating multi-link folding mechanism according to claim 1, characterized in that: The mounting base (1) is symmetrically provided with beam-column support rings (7), a rotating support shaft (8) is passed through the beam-column support rings (7), the rotating support shaft (8) is rotatably connected to the lower guide wheel (4) via a first shaft sleeve (9), the beam-column support ring (7) is rotatably connected to the rotating beam-column assembly (2) via a second shaft sleeve (10), both ends of the first shaft sleeve (9) and the second shaft sleeve (10) are provided with positioning retaining rings (11) for limiting, and the end of the rotating support shaft (8) is provided with a shaft end retaining ring (81).

4. The rotating multi-link folding mechanism according to claim 2, characterized in that: The outer wall of the sleeve (21) is provided with a limiting step, a positioning stopper (22) is fitted on the limiting step, an upper end surface of the positioning stopper (22) fits a lower end surface of the swing frame (31), a positioning sleeve (23) is provided between the sleeve (21) and the swing frame (31), and the sleeve (21) and the swing frame (31) are limited by a positioning screw (24).

5. The rotating multi-link folding mechanism according to claim 2, characterized in that: A rotatable guardrail assembly (12) is coaxially disposed outside the upper swing wheel (33), the guardrail assembly (12) comprising a guardrail bracket (121) sleeved on the fixed shaft (32), a guide wheel (122) being hingedly connected to the guardrail bracket (121), torsion springs (34) being sleeved on both ends of the fixed shaft (32), one end of the torsion spring (34) being fixed to the swing frame (31), and the folded corner of the other end of the torsion spring (34) being arranged to fit the side wall of the guardrail bracket (121).

6. The rotating multi-link folding mechanism according to claim 1, characterized in that: The swing cylinder (51), the first connecting rod (52) and the second connecting rod (53) are all hingedly connected by a connecting member (13) of the same structure. The connecting member (13) comprises a connecting shaft (131). A connecting shaft sleeve (132) is provided outside the connecting shaft (131). Connecting baffles (133) are provided at both ends of the connecting shaft sleeve (132). A limiting groove is provided at the end of the connecting shaft (131). A limiting baffle (134) is clamped in the limiting groove.

7. The rotating multi-link folding mechanism according to claim 1, characterized in that: A hinged portion (521) is provided in the middle of the first connecting rod (52), and a limit sleeve (522) for hinged connection with the connecting pin shaft (6) is provided on the inner wall of the hinged portion (521), and a limit ring (61) for installing and limiting the limit sleeve (522) is provided on the connecting pin shaft (6); a positioning groove for positioning with the rotating beam-column assembly (2) is provided on the connecting pin shaft (6), and a blocking piece (62) is provided in the positioning groove, and an end of the connecting pin shaft (6) is also provided with a shaft end limit retaining ring (63).

8. The rotating multi-link folding mechanism according to claim 1, characterized in that: A connecting seat (14) for connecting the swing cylinder (51) is fixed on the side wall of the mounting base (1).

9. The rotating multi-link folding mechanism according to claim 1, characterized in that: The installation base (1) is provided with a connection port (15) for connecting to a positioning device.

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