Underwater hydraulic cylinder arc line relay device

Abstract

An underwater hydraulic cylinder arc relay device, including: arc support, relay slide, left hydraulic cylinder, right hydraulic cylinder and relay mechanism, the arc surface of arc support is provided with relay slide, both ends of arc support are respectively hinged with left hydraulic cylinder and right hydraulic cylinder, left hydraulic cylinder and right hydraulic cylinder are respectively arranged on the different side of arc support, the relay mechanism that can slide along relay slide is arranged in relay slide, both ends of relay bolt are respectively inserted with the ear ring of left hydraulic cylinder and right hydraulic cylinder, the distance between the ear ring of left hydraulic cylinder and right hydraulic cylinder is equal to the length of the sum of single ear ring thickness and relay bolt.This design not only can make relay mechanism realize relay between two hydraulic cylinders through relay slide, expand the action range of relay device, but also can play the guiding role to positioning slide through arc support, avoid the jamming of relay device when acting.

Description

Technical Field

[0001] This invention relates to a hydraulic control device, and more particularly to an underwater hydraulic cylinder arc relay device. Background Technology

[0002] Due to its high technology, high investment, and high risk, marine oil and gas underwater equipment faces increasingly stringent environmental and energy constraints, leading to higher requirements for the equipment and greater difficulty in design and manufacturing as the various components become more interconnected.

[0003] With the emergence of new technologies, control technology has gradually evolved from electro-hydraulic to fully electro-controlled. However, current underwater electro-control system technology is still unstable. Therefore, underwater hydraulic control technology remains the mainstream development direction for current marine oil and gas underwater equipment.

[0004] For the curved movements of moving parts of underwater equipment (such as hatch opening), current methods often control them by extending or retracting a single hydraulic cylinder. This control structure has advantages such as stability, reliability, simple operation, high efficiency, and overload protection, but it still has the following drawbacks:

[0005] 1. Conventional hydraulic cylinders have simple movements. When faced with curved movement trajectories, the arc of the movement is limited due to the constraints of the weight and stroke of the hydraulic cylinder, making it difficult to achieve large-arc movements.

[0006] 2. Conventional hydraulic cylinders extend and retract in a straight line, usually intersecting with the circle containing the arc of the motion trajectory. This results in low transmission efficiency and a tendency to jam during operation.

[0007] The information disclosed in this background section is intended only to enhance understanding of the overall background of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of existing technologies, such as small arc radius and easy jamming during operation, and to provide an underwater hydraulic cylinder arc relay device with a larger arc radius and less prone to jamming during operation.

[0009] To achieve the above objectives, the technical solution of the present invention is:

[0010] An underwater hydraulic cylinder arc relay device, the relay device comprising: an arc-shaped bracket, a relay slide, a left hydraulic cylinder, a right hydraulic cylinder, and a relay mechanism;

[0011] The arc-shaped support has a relay slide rail on its arc-shaped surface. A left hydraulic cylinder and a right hydraulic cylinder are respectively hinged to both ends of the arc-shaped support. The left and right hydraulic cylinders are respectively located on opposite sides of the arc-shaped support. A relay mechanism that can slide along the relay slide rail is provided in the relay slide rail. The relay mechanism is a relay pin. The relay pin is a double-headed pin. The relay pin is set perpendicular to the arc-shaped support. The middle part of the relay pin slides in cooperation with the relay slide rail. The two ends of the relay pin are respectively inserted into the lugs of the left and right hydraulic cylinders. The distance between the lugs of the left and right hydraulic cylinders and the sum of the thickness of a single lug are equal to the length of the relay pin.

[0012] The relay slide includes a left slide and a right slide that are parallel to each other. The left slide and the right slide are opened from the left end of the arc-shaped support to the right end of the arc-shaped support. The left slide is located near the left hydraulic cylinder and the right slide is located near the right hydraulic cylinder. The opposite ends of the left slide and the right slide are arc-shaped transition sections. The two arc-shaped transition sections are tangent to each other, and the connection point of the two arc-shaped transition sections coincides with the midpoint of the arc-shaped support.

[0013] The arc-shaped bracket is a hollow frame structure with a rectangular cross-section. The relay mechanism is set in the inner cavity of the arc-shaped bracket and slides with the inner wall of the arc-shaped bracket. The two side walls of the arc-shaped bracket are provided with pin slots that cooperate with the pins of the relay mechanism. The left slide and the right slide are both opened on the inner arc surface of the arc-shaped bracket.

[0014] Each end of the arc-shaped bracket is provided with a hydraulic cylinder support leg. The hydraulic cylinder support leg located at the left end of the arc-shaped bracket is located near the left slide rail, and the hydraulic cylinder support leg located at the right end of the arc-shaped bracket is located near the right slide rail. The left hydraulic cylinder is hinged to the hydraulic cylinder support leg located at the left end of the arc-shaped bracket, and the right hydraulic cylinder is hinged to the hydraulic cylinder support leg located at the right end of the arc-shaped bracket. When the telescopic rods of the left and right hydraulic cylinders are fully extended, the line connecting the earrings on them coincides with the connection point of the two arc-shaped transition sections.

[0015] Both the left and right hydraulic cylinders have conical relay grooves for corresponding relay pins on their lugs, and both the left and right hydraulic cylinders have rubber pads fitted on their cylinder seats.

[0016] The relay mechanism also includes a limiting rod, which is an integral structure with the relay pin. The middle part of the relay pin is fixedly connected to one end of the limiting rod, and the other end of the limiting rod is inserted into the relay slide and slides with the relay slide.

[0017] The relay device also includes a positioning slider, which is a block structure that cooperates with the inner cavity of the arc-shaped bracket. The positioning slider has interconnected pin holes and limit rod grooves. The pin holes and limit rod grooves are both perpendicular to the plane of the arc-shaped bracket. Both ends of the pin holes and limit rod grooves protrude through the side wall of the positioning slider. The pin holes are corresponding to the relay pins, and the limit rod grooves are corresponding to the limit rods.

[0018] The arc-shaped bracket is also provided with two cylinder mounting plates, which are respectively fixedly mounted on the two cylinder legs. The cylinder mounting plates are also provided with two cylinder mounting ears that cooperate with the left or right hydraulic cylinder.

[0019] A cylinder support plate is also fixedly installed on the cylinder mounting plate. One side of the cylinder support plate is fixedly connected to the side edge of the cylinder mounting plate near the inner arc surface of the arc bracket. A cylinder receiving groove is opened on the other side of the cylinder support plate. The two cylinder receiving grooves are set opposite to the rubber pads on the left or right hydraulic cylinder. When the left or right hydraulic cylinder contacts the cylinder receiving groove, the conical relay groove on it is set opposite to the connection of the two arc transition sections.

[0020] A limit device connecting plate is also fixedly installed on the cylinder mounting plate. One side of the limit device connecting plate is fixedly connected to the side edge of the cylinder mounting plate near the outer arc surface of the arc bracket, and a limit device is fixedly installed on the other side of the limit device connecting plate.

[0021] The limiting device includes a spring cylinder, a spring fixing rod, a spring, an annular pressure plate, a limiting head, and a limiting ring.

[0022] The spring cylinder is fixedly mounted on the connecting plate of the limiting device. The open end of the spring cylinder faces the rubber pad. The open end of the spring cylinder is fixedly connected to the outer edge of the annular pressure plate. A spring fixing rod is fixedly mounted inside the spring cylinder. A spring is sleeved on the spring fixing rod. A blind hole that mates with the spring fixing rod is opened inside the limiting head. A limiting ring is fixedly mounted at the end of the limiting head. After the limiting head is inserted into the inner hole of the annular pressure plate, it is sleeved on the spring fixing rod. The limiting ring on the limiting head is in limiting engagement with the annular pressure plate. The limiting head is pressed into one end of the spring, and the other end of the spring is pressed into the spring cylinder. The limiting head is pressed into engagement with its corresponding hydraulic cylinder receiving groove through a hydraulic cylinder.

[0023] The arc-shaped bracket is also provided with a slider connecting groove, which is opened directly opposite the positioning slider. The width of the slider connecting groove is smaller than the width of the positioning slider, and the two ends of the slider connecting groove are respectively located close to the two ends of the arc-shaped bracket.

[0024] The cylinder support leg is provided with a relay pin mounting hole, which is a strip-shaped hole, and the end of the relay pin mounting hole is connected to the pin groove.

[0025] The relay mechanism also includes a limiting plate. A limiting plate is fixedly installed on one end of the limiting rod, and the other end of the limiting rod is fixedly connected to the relay pin. The diameter of the limiting plate is greater than the width of the left slide and the right slide.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. In the underwater hydraulic cylinder arc relay device of the present invention, a relay slide is provided on the arc-shaped support. The relay slide includes a left slide, a middle slide, and a right slide that are connected end to end. The left slide and the right slide are respectively located near the two side walls of the arc-shaped support. The opposite ends of the left slide and the right slide are arc-shaped transition sections, and the two arc-shaped transition sections are tangent. A hydraulic cylinder is hinged to each end of the arc-shaped support. The two hydraulic cylinders are located near the slide on their corresponding side. When fully extended, the two hydraulic cylinders are located on the extension line of the middle slide. A relay mechanism is provided in the relay slide. The two ends of the relay mechanism are respectively inserted and engaged with the lugs of the two hydraulic cylinders. In use, when one of the hydraulic cylinders drives the relay mechanism to move to the arc-shaped transition section, the relay mechanism enters the other slide along the arc-shaped transition section. At the same time, the relay mechanism disengages from the original hydraulic cylinder and inserts into the other hydraulic cylinder, thereby expanding the range of motion of the relay mechanism to twice that of a single cylinder. Therefore, this design allows the relay mechanism to achieve relay between two hydraulic cylinders through a relay slide, effectively expanding the operating range of the relay device.

[0028] 2. In the underwater hydraulic cylinder arc relay device of the present invention, the arc-shaped bracket is a frame structure with an arc. The arc of the arc-shaped bracket coincides with the required motion trajectory. The inner cavity of the arc-shaped bracket cooperates with the positioning slider, so that the arc-shaped bracket can guide the positioning slider and prevent the relay device from jamming during the action. Therefore, this design can guide the positioning slider through the arc-shaped bracket, preventing the relay device from jamming during the action and effectively improving the reliability of the relay device.

[0029] 3. In the underwater hydraulic cylinder arc relay device of the present invention, a hydraulic cylinder support plate is fixedly installed on the cylinder mounting plate, and a hydraulic cylinder buffer pad is fixedly installed on the cylinder support plate. This can prevent the hydraulic cylinder from colliding with the cylinder mounting plate during operation. Simultaneously, when the left or right hydraulic cylinder contacts the cylinder buffer pad, its conical relay groove is positioned directly opposite the connection point of the two arc-shaped transition sections. When the relay device performs the relay, the relay pin can be accurately inserted into the conical relay groove. Therefore, this design, through the hydraulic cylinder support plate, allows the relay pin to be accurately inserted into the conical relay groove, effectively improving the relay success rate. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention.

[0031] Figure 2 This is a structural schematic diagram from another perspective of the present invention.

[0032] Figure 3 yes Figure 1 A schematic diagram of the structure of the arc-shaped support.

[0033] Figure 4 yes Figure 1 A structural schematic diagram of the arc-shaped support from another perspective.

[0034] Figure 5 yes Figure 4 A schematic diagram of the middle relay slide.

[0035] Figure 6 yes Figure 1 Cross-sectional view of the middle limit device.

[0036] Figure 7 yes Figure 1 A cross-sectional view of the positioning slider.

[0037] Figure 8 yes Figure 2 A perspective view along line A.

[0038] Figure 9 yes Figure 6 A schematic diagram of the relay mechanism.

[0039] Figure 10 yes Figure 1 A schematic diagram of the positioning slider.

[0040] Figure 11 yes Figure 2 A schematic diagram of the structure of the hydraulic cylinder mounting plate.

[0041] Figure 12 yes Figure 7 A schematic diagram of the structure of the conical relay groove.

[0042] In the diagram: 1. Arc-shaped bracket; 11. Cylinder support leg; 12. Pin groove; 13. Cylinder mounting plate; 14. Cylinder mounting ear; 15. Cylinder support plate; 16. Cylinder receiving groove; 17. Slider connecting groove; 18. Relay pin mounting hole; 19. Limiting device connecting plate; 2. Relay slide; 21. Left slide; 22. Right slide; 23. Arc-shaped transition section; 3. Left hydraulic cylinder; 4. Right hydraulic cylinder; 41. Rubber pad; 5. Relay mechanism; 51. Relay pin; 52. Limiting rod; 53. Limiting disc; 6. Positioning slider; 61. Pin sliding hole; 62. Limiting rod sliding groove; 7. Conical relay groove; 8. Limiting device; 81. Spring cylinder; 82. Spring fixing rod; 83. Spring; 84. Annular pressure plate; 85. Limiting head; 86. Limiting ring. Detailed Implementation

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] See Figures 1 to 12 An underwater hydraulic cylinder arc relay device, the relay device comprising: an arc-shaped bracket 1, a relay slide 2, a left hydraulic cylinder 3, a right hydraulic cylinder 4, and a relay mechanism 5;

[0045] The arc-shaped support 1 has a relay slide 2 on its arc-shaped surface. A left hydraulic cylinder 3 and a right hydraulic cylinder 4 are respectively hinged to both ends of the arc-shaped support 1. The left hydraulic cylinder 3 and the right hydraulic cylinder 4 are respectively located on opposite sides of the arc-shaped support 1. A relay mechanism 5 that can slide along the relay slide 2 is provided in the relay slide 2. The relay mechanism 5 is a relay pin 51. The relay pin 51 is a double-headed pin. The relay pin 51 is set perpendicular to the arc-shaped support 1. The middle part of the relay pin 51 slides in cooperation with the relay slide 2. The two ends of the relay pin 51 are respectively inserted into the lugs of the left hydraulic cylinder 3 and the right hydraulic cylinder 4. The distance between the lugs of the left hydraulic cylinder 3 and the right hydraulic cylinder 4 and the sum of the thickness of a single lug are equal to the length of the relay pin 51.

[0046] The relay slide 2 includes a left slide 21 and a right slide 22 that are parallel to each other. The left slide 21 and the right slide 22 are opened from the left end of the arc-shaped support 1 to the right end of the arc-shaped support 1. The left slide 21 is located near the left hydraulic cylinder 3, and the right slide 22 is located near the right hydraulic cylinder 4. The opposite ends of the left slide 21 and the right slide 22 are both arc-shaped transition sections 23. The two arc-shaped transition sections 23 are tangent to each other, and the connection point of the two arc-shaped transition sections 23 coincides with the midpoint of the arc-shaped support 1.

[0047] The arc-shaped support 1 is a hollow frame structure with a rectangular cross-section. The relay mechanism 5 is set in the inner cavity of the arc-shaped support 1. The relay mechanism 5 slides with the inner wall of the arc-shaped support 1. The two side walls of the arc-shaped support 1 are provided with pin grooves 12 that cooperate with the pins of the relay mechanism 5. The left slide 21 and the right slide 22 are both opened on the inner arc surface of the arc-shaped support 1.

[0048] Each end of the arc-shaped bracket 1 is provided with a hydraulic cylinder support leg 11. The hydraulic cylinder support leg 11 located at the left end of the arc-shaped bracket 1 is located near the left slide rail 21, and the hydraulic cylinder support leg 11 located at the right end of the arc-shaped bracket 1 is located near the right slide rail 22. The left hydraulic cylinder 3 is hinged to the hydraulic cylinder support leg 11 located at the left end of the arc-shaped bracket 1, and the right hydraulic cylinder 4 is hinged to the hydraulic cylinder support leg 11 located at the right end of the arc-shaped bracket 1. When the telescopic rods of the left hydraulic cylinder 3 and the right hydraulic cylinder 4 are fully extended, the line connecting the earrings on them coincides with the connection point of the two arc-shaped transition sections 23.

[0049] The left hydraulic cylinder 3 and the right hydraulic cylinder 4 are provided with conical relay grooves 7 corresponding to the relay pins 51 on their lugs, and rubber pads 41 are provided on the cylinder seats of the left hydraulic cylinder 3 and the right hydraulic cylinder 4.

[0050] The relay mechanism 5 also includes a limiting rod 52, which is an integral structure with the relay pin 51. The middle part of the relay pin 51 is fixedly connected to one end of the limiting rod 52, and the other end of the limiting rod 52 is inserted into the relay slide 2 and slides in cooperation with the relay slide 2.

[0051] The relay device also includes a positioning slider 6, which is a block structure that cooperates with the inner cavity of the arc-shaped bracket 1. The positioning slider 6 has interconnected pin sliding holes 61 and limit rod sliding grooves 62. The pin sliding holes 61 and limit rod sliding grooves 62 are both perpendicular to the plane where the arc-shaped bracket 1 is located. Both ends of the pin sliding holes 61 and limit rod sliding grooves 62 protrude through the side wall of the positioning slider 6. The pin sliding holes 61 are correspondingly set with the relay pin 51, and the limit rod sliding grooves 62 are correspondingly set with the limit rod 52.

[0052] The arc-shaped bracket 1 is also provided with two cylinder mounting plates 13. The two cylinder mounting plates 13 are respectively fixedly mounted on the two cylinder legs 11. The cylinder mounting plates 13 are fixedly provided with two cylinder mounting ears 14 that cooperate with the left hydraulic cylinder 3 or the right hydraulic cylinder 4.

[0053] A cylinder support plate 15 is also fixedly installed on the cylinder mounting plate 13. One side of the cylinder support plate 15 is fixedly connected to the side edge of the cylinder mounting plate 13 near the inner arc surface of the arc bracket 1. A cylinder receiving groove 16 is opened on the other side of the cylinder support plate 15. The two cylinder receiving grooves 16 are set opposite to the rubber pad 41 on the left hydraulic cylinder 3 or the right hydraulic cylinder 4. When the left hydraulic cylinder 3 or the right hydraulic cylinder 4 contacts the cylinder receiving groove 16, the conical relay groove 7 on it is set opposite to the connection of the two arc transition sections 23.

[0054] A limiting device connecting plate 19 is also fixedly installed on the cylinder mounting plate 13. One side of the limiting device connecting plate 19 is fixedly connected to the side edge of the cylinder mounting plate 13 near the outer arc surface of the arc bracket 1, and a limiting device 8 is fixedly installed on the other side of the limiting device connecting plate 19.

[0055] The limiting device 8 includes a spring cylinder 81, a spring fixing rod 82, a spring 83, an annular pressure plate 84, a limiting head 85, and a limiting ring 86.

[0056] The spring cylinder 81 is fixedly mounted on the limiting device connecting plate 19. The open end of the spring cylinder 81 faces the rubber pad 41. The open end of the spring cylinder 81 is fixedly connected to the outer edge of the annular pressure plate 84. A spring fixing rod 82 is fixedly mounted inside the spring cylinder 81. A spring 83 is sleeved on the spring fixing rod 82. A blind hole is opened in the limiting head 85 to cooperate with the spring fixing rod 82. A limiting ring 86 is fixedly mounted at the end of the limiting head 85. After the limiting head 85 is inserted into the inner hole of the annular pressure plate 84, it is sleeved on the spring fixing rod 82. The limiting ring 86 on the limiting head 85 is in a limiting cooperation with the annular pressure plate 84. The limiting head 85 is pressed tightly against one end of the spring 83. The other end of the spring 83 is pressed tightly against the spring cylinder 81. The limiting head 85 is pressed tightly against its corresponding hydraulic cylinder receiving groove 16 through a hydraulic cylinder.

[0057] The arc-shaped bracket 1 is also provided with a slider connecting groove 17, which is opened directly opposite the positioning slider 6. The width of the slider connecting groove 17 is smaller than the width of the positioning slider 6, and the two ends of the slider connecting groove 17 are respectively located close to the two ends of the arc-shaped bracket 1.

[0058] The cylinder support leg 11 is provided with a relay pin mounting hole 18, which is a strip-shaped hole, and the end of the relay pin mounting hole 18 is connected to the pin groove 12.

[0059] The relay mechanism 5 also includes a limiting plate 53. The limiting plate 53 is fixedly installed on one end of the limiting rod 52, and the other end of the limiting rod 52 is fixedly connected to the relay pin 51. The diameter of the limiting plate 53 is greater than the width of the left slide 21 and the right slide 22.

[0060] The principle of this invention is explained as follows:

[0061] In this design, the slider connection slot 17 is used to provide space for the positioning slider 6 to connect with the component that performs the curved action;

[0062] For example, when used for opening and closing underwater hatches, the positioning slider 6 is hinged to the outer edge of the hatch via the slider connecting groove 17;

[0063] In use, the relay pin 51 always maintains an insertion engagement with at least one of the conical relay groove 7 of the left hydraulic cylinder 3 or the conical relay groove 7 of the right hydraulic cylinder 4.

[0064] When the relay pin 51 is engaged with one of the hydraulic cylinders, the other hydraulic cylinder maintains its maximum extension length.

[0065] When one of the hydraulic cylinders extends to its maximum value, the relay pin 51 is in the middle of the arc transition section 23. At this time, the two ends of the relay pin 51 are inserted into the conical relay grooves 7 on the two hydraulic cylinders respectively, and the insertion depth is half of the maximum insertion depth.

[0066] Example 1:

[0067] An underwater hydraulic cylinder arc relay device is disclosed, comprising: an arc-shaped support 1, a relay slide 2, a left hydraulic cylinder 3, a right hydraulic cylinder 4, and a relay mechanism 5; the arc-shaped support 1 has a relay slide 2 formed on its arc-shaped surface, and the left hydraulic cylinder 3 and the right hydraulic cylinder 4 are respectively hinged to both ends of the arc-shaped support 1, with the left hydraulic cylinder 3 and the right hydraulic cylinder 4 respectively located on opposite sides of the arc-shaped support 1; a relay mechanism 5 is provided within the relay slide 2, allowing it to slide along the relay slide 2. The force mechanism 5 is a relay pin 51, which is a double-headed pin. The relay pin 51 is perpendicular to the arc-shaped bracket 1. The middle part of the relay pin 51 slides into the relay slide 2. The two ends of the relay pin 51 are respectively inserted into the lugs of the left hydraulic cylinder 3 and the right hydraulic cylinder 4. The distance between the lugs of the left hydraulic cylinder 3 and the right hydraulic cylinder 4, and the sum of the thickness of each lug, are equal to the length of the relay pin 51. Track 2 includes a left slide track 21 and a right slide track 22 that are parallel to each other. The left slide track 21 and the right slide track 22 are opened sequentially from the left end to the right end of the arc-shaped support 1. The left slide track 21 is located near the left hydraulic cylinder 3, and the right slide track 22 is located near the right hydraulic cylinder 4. The opposite ends of the left slide track 21 and the right slide track 22 are both arc-shaped transition sections 23, and the two arc-shaped transition sections 23 are tangent to each other. The connection between the two arc-shaped transition sections 23 is connected to the arc-shaped support. The midpoints of the frame 1 coincide; the arc-shaped support 1 is a hollow frame structure with a rectangular cross-section; the relay mechanism 5 is located in the inner cavity of the arc-shaped support 1; the relay mechanism 5 slides against the inner wall of the arc-shaped support 1; pin slots 12 that mate with the pins of the relay mechanism 5 are provided on both side walls of the arc-shaped support 1; the left slide rail 21 and the right slide rail 22 are both located on the inner arc surface of the arc-shaped support 1; a hydraulic cylinder support leg 11 is provided at each end of the arc-shaped support 1. The hydraulic cylinder support leg 11 located at the left end of the arc-shaped bracket 1 is positioned near the left slide rail 21, and the hydraulic cylinder support leg 11 located at the right end of the arc-shaped bracket 1 is positioned near the right slide rail 22. The left hydraulic cylinder 3 is hinged to the hydraulic cylinder support leg 11 located at the left end of the arc-shaped bracket 1, and the right hydraulic cylinder 4 is hinged to the hydraulic cylinder support leg 11 located at the right end of the arc-shaped bracket 1. When the telescopic rods of the left hydraulic cylinder 3 and the right hydraulic cylinder 4 are fully extended, the line connecting the earrings on them intersects the two arc-shaped transition sections 2. 3. The connection points overlap; the lugs of the left hydraulic cylinder 3 and the right hydraulic cylinder 4 are each provided with a conical relay groove 7 corresponding to the relay pin 51, and the cylinder seats of the left hydraulic cylinder 3 and the right hydraulic cylinder 4 are each fitted with a rubber pad 41; the relay mechanism 5 also includes a limiting rod 52, the limiting rod 52 and the relay pin 51 are an integral structure, the middle part of the relay pin 51 is fixedly connected to one end of the limiting rod 52, and the other end of the limiting rod 52 is inserted into the relay slide 2 and slides in cooperation with the relay slide 2;The relay device also includes a positioning slider 6, which is a square structure that mates with the inner cavity of the arc-shaped bracket 1. The positioning slider 6 has interconnected pin sliding holes 61 and limit rod sliding grooves 62. Both the pin sliding holes 61 and the limit rod sliding grooves 62 are perpendicular to the plane of the arc-shaped bracket 1. Both ends of the pin sliding holes 61 and the limit rod sliding grooves 62 protrude from the side wall of the positioning slider 6. The pin sliding holes 61 correspond to the relay pins 51, and the limit rod sliding grooves 62 correspond to the limit rods 52. The arc-shaped bracket 1 also has two cylinder mounting plates 13, which are fixedly mounted on two cylinder support legs 11. Each cylinder mounting plate 13 has two cylinder mounting ears 14 that mate with either the left hydraulic cylinder 3 or the right hydraulic cylinder 4. A cylinder support plate 15 is also fixedly mounted on the cylinder mounting plate 13. One side of the support plate 15 is fixedly connected to the side edge of the cylinder mounting plate 13 near the inner arc surface of the arc-shaped bracket 1. A cylinder receiving groove 16 is provided on the other side of the cylinder support plate 15. The two cylinder receiving grooves 16 are positioned opposite the rubber pads 41 on the left hydraulic cylinder 3 or the right hydraulic cylinder 4. When the left hydraulic cylinder 3 or the right hydraulic cylinder 4 contacts the cylinder receiving groove 16, its conical relay groove 7 is positioned opposite the connection point of the two arc-shaped transition sections 23. A slider connecting groove 17 is also provided on the arc-shaped bracket 1. The slider connecting groove 17 is positioned opposite the positioning slider 6. The width of the slider connecting groove 17 is smaller than the width of the positioning slider 6. The two ends of the slider connecting groove 17 are respectively positioned near the two ends of the arc-shaped bracket 1. A relay pin mounting hole 18 is provided on the cylinder support leg 11. The relay pin mounting hole 18 is a strip-shaped hole, and its end is connected to the pin groove 12.

[0068] Example 2:

[0069] Example 2 is basically the same as Example 1, except that:

[0070] A limiting device connecting plate 19 is also fixedly installed on the cylinder mounting plate 13. One side of the limiting device connecting plate 19 is fixedly connected to the side edge of the cylinder mounting plate 13 near the outer arc surface of the arc-shaped bracket 1, and a limiting device 8 is fixedly installed on the other side of the limiting device connecting plate 19. The limiting device 8 includes a spring cylinder 81, a spring fixing rod 82, a spring 83, an annular pressure plate 84, a limiting head 85, and a limiting ring 86. The spring cylinder 81 is fixedly installed on the limiting device connecting plate 19, and the open end of the spring cylinder 81 is positioned opposite the rubber pad 41. The open end of the spring cylinder 81 is fixedly connected to the outer edge of the annular pressure plate 84. A spring fixing rod 82 is fixedly installed inside the spring cylinder 81, and a spring 83 is sleeved on the spring fixing rod 82. A blind hole is opened in the limiting head 85 to cooperate with the spring fixing rod 82. A limiting ring 86 is fixedly installed at the end of the limiting head 85. After the limiting head 85 is inserted into the inner hole of the annular pressure plate 84, it is sleeved on the spring fixing rod 82. The limiting ring 86 on the limiting head 85 is in a limiting cooperation with the annular pressure plate 84. The limiting head 85 is pressed and cooperated with one end of the spring 83, and the other end of the spring 83 is pressed and cooperated with the spring cylinder 81. The limiting head 85 is pressed and cooperated with its corresponding hydraulic cylinder receiving groove 16 through a hydraulic cylinder.

[0071] Example 3:

[0072] Example 3 is basically the same as Example 2, except that:

[0073] The relay mechanism 5 also includes a limiting plate 53. The limiting plate 53 is fixedly installed on one end of the limiting rod 52, and the other end of the limiting rod 52 is fixedly connected to the relay pin 51. The diameter of the limiting plate 53 is greater than the width of the left slide 21 and the right slide 22.

[0074] The above description is only a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present invention should be included within the scope of protection set forth in the claims.

Claims

1. An underwater hydraulic cylinder arc relay device, characterized in that: The relay device includes: an arc-shaped bracket (1), a relay slide (2), a left hydraulic cylinder (3), a right hydraulic cylinder (4), and a relay mechanism (5); The arc-shaped support (1) has a relay slide (2) on its arc-shaped surface. A left hydraulic cylinder (3) and a right hydraulic cylinder (4) are hinged to both ends of the arc-shaped support (1). The left hydraulic cylinder (3) and the right hydraulic cylinder (4) are respectively located on opposite sides of the arc-shaped support (1). A relay mechanism (5) that can slide along the relay slide (2) is provided inside the relay slide (2). The relay mechanism (5) is a relay pin (51). The pin (51) is a double-headed pin. The relay pin (51) is set perpendicular to the arc bracket (1). The middle part of the relay pin (51) is slidably engaged with the relay slide (2). The two ends of the relay pin (51) are respectively inserted into the ear rings of the left hydraulic cylinder (3) and the right hydraulic cylinder (4). The distance between the ear rings of the left hydraulic cylinder (3) and the right hydraulic cylinder (4) and the sum of the thickness of a single ear ring are equal to the length of the relay pin (51). The relay slide (2) includes a left slide (21) and a right slide (22) that are parallel to each other. The left slide (21) and the right slide (22) are opened from the left end of the arc-shaped support (1) to the right end of the arc-shaped support (1). The left slide (21) is set near the left hydraulic cylinder (3), and the right slide (22) is set near the right hydraulic cylinder (4). The opposite ends of the left slide (21) and the right slide (22) are arc transition sections (23). The two arc transition sections (23) are tangent to each other, and the connection point of the two arc transition sections (23) coincides with the midpoint of the arc-shaped support (1).

2. The underwater hydraulic cylinder arc relay device according to claim 1, characterized in that: The arc-shaped bracket (1) is a hollow frame structure with a rectangular cross section. The relay mechanism (5) is set in the inner cavity of the arc-shaped bracket (1). The relay mechanism (5) slides with the inner wall of the arc-shaped bracket (1). The two side walls of the arc-shaped bracket (1) are provided with pin slots (12) that cooperate with the pins of the relay mechanism (5). The left slide (21) and the right slide (22) are both opened on the inner arc surface of the arc-shaped bracket (1).

3. The underwater hydraulic cylinder arc relay device according to claim 2, characterized in that: The arc-shaped bracket (1) has a hydraulic cylinder support leg (11) at each end. The hydraulic cylinder support leg (11) at the left end of the arc-shaped bracket (1) is located near the left slide rail (21), and the hydraulic cylinder support leg (11) at the right end of the arc-shaped bracket (1) is located near the right slide rail (22). The left hydraulic cylinder (3) is hinged to the hydraulic cylinder support leg (11) at the left end of the arc-shaped bracket (1), and the right hydraulic cylinder (4) is hinged to the hydraulic cylinder support leg (11) at the right end of the arc-shaped bracket (1). When the telescopic rods of the left hydraulic cylinder (3) and the right hydraulic cylinder (4) are fully extended, the line connecting the earrings on them coincides with the connection point of the two arc-shaped transition sections (23). The left hydraulic cylinder (3) and the right hydraulic cylinder (4) are provided with conical relay grooves (7) for corresponding relay pins (51), and rubber pads (41) are provided on the cylinder seats of the left hydraulic cylinder (3) and the right hydraulic cylinder (4).

4. The underwater hydraulic cylinder arc relay device according to claim 3, characterized in that: The relay mechanism (5) also includes a limiting rod (52), which is an integral structure with the relay pin (51). The middle part of the relay pin (51) is fixedly connected to one end of the limiting rod (52), and the other end of the limiting rod (52) is inserted into the relay slide (2) and then slides with the relay slide (2).

5. The underwater hydraulic cylinder arc relay device according to claim 4, characterized in that: The relay device also includes a positioning slider (6), which is a block structure that cooperates with the inner cavity of the arc-shaped bracket (1). The positioning slider (6) has interconnected pin sliding holes (61) and limit rod sliding grooves (62). The pin sliding holes (61) and limit rod sliding grooves (62) are both perpendicular to the plane where the arc-shaped bracket (1) is located. Both ends of the pin sliding holes (61) and limit rod sliding grooves (62) protrude through the side wall of the positioning slider (6). The pin sliding holes (61) are correspondingly set with the relay pin (51), and the limit rod sliding grooves (62) are correspondingly set with the limit rods (52).

6. The underwater hydraulic cylinder arc relay device according to claim 5, characterized in that: Two cylinder mounting plates (13) are also provided on the arc-shaped bracket (1). The two cylinder mounting plates (13) are respectively fixed on the two cylinder legs (11). Two cylinder mounting ears (14) that cooperate with the left hydraulic cylinder (3) or the right hydraulic cylinder (4) are fixed on the cylinder mounting plate (13).

7. The underwater hydraulic cylinder arc relay device according to claim 6, characterized in that: A cylinder support plate (15) is also fixedly installed on the cylinder mounting plate (13). One side of the cylinder support plate (15) is fixedly connected to the side edge of the inner arc surface of the cylinder mounting plate (13) near the arc bracket (1). A cylinder receiving groove (16) is opened on the other side of the cylinder support plate (15). The two cylinder receiving grooves (16) are set opposite to the rubber pad (41) on the left hydraulic cylinder (3) or the right hydraulic cylinder (4). When the left hydraulic cylinder (3) or the right hydraulic cylinder (4) contacts the cylinder receiving groove (16), the conical relay groove (7) on it is set opposite to the connection of the two arc transition sections (23).

8. The underwater hydraulic cylinder arc relay device according to claim 7, characterized in that: A limit device connecting plate (19) is also fixedly provided on the cylinder mounting plate (13). One side of the limit device connecting plate (19) is fixedly connected to the side edge of the cylinder mounting plate (13) near the outer arc surface of the arc bracket (1). A limit device (8) is fixedly provided on the other side of the limit device connecting plate (19). The limiting device (8) includes a spring cylinder (81), a spring fixing rod (82), a spring (83), an annular pressure plate (84), a limiting head (85), and a limiting ring (86). The spring cylinder (81) is fixedly mounted on the limiting device connecting plate (19). The open end of the spring cylinder (81) faces the rubber pad (41). The open end of the spring cylinder (81) is fixedly connected to the outer edge of the annular pressure plate (84). A spring fixing rod (82) is fixedly mounted inside the spring cylinder (81). A spring (83) is sleeved on the spring fixing rod (82). The limiting head (85) is fixedly mounted on the spring fixing rod (83). 5) A blind hole is provided inside to cooperate with the spring fixing rod (82). A limiting ring (86) is fixedly provided at the end of the limiting head (85). After the limiting head (85) is inserted into the inner hole of the annular pressure plate (84), it is sleeved on the spring fixing rod (82). The limiting ring (86) on the limiting head (85) is limited and cooperated with the annular pressure plate (84). The limiting head (85) is pressed and cooperated with one end of the spring (83). The other end of the spring (83) is pressed and cooperated with the spring cylinder (81). The limiting head (85) is pressed and cooperated with the corresponding oil cylinder receiving groove (16) through the oil cylinder.

9. An underwater hydraulic cylinder arc relay device according to any one of claims 4 to 8, characterized in that: The arc-shaped bracket (1) is also provided with a slider connecting groove (17), which is opened directly opposite the positioning slider (6). The width of the slider connecting groove (17) is smaller than the width of the positioning slider (6), and the two ends of the slider connecting groove (17) are respectively located close to the two ends of the arc-shaped bracket (1). The cylinder support leg (11) is provided with a relay pin mounting hole (18), which is a strip-shaped hole, and the end of the relay pin mounting hole (18) is connected to the pin groove (12).

10. The underwater hydraulic cylinder arc relay device according to claim 9, characterized in that: The relay mechanism (5) also includes a limiting plate (53). The limiting plate (53) is fixedly installed on one end of the limiting rod (52), and the other end of the limiting rod (52) is fixedly connected to the relay pin (51). The diameter of the limiting plate (53) is greater than the width of the left slide (21) and the right slide (22).

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