Underwater opening and closing door

Abstract

The invention discloses an underwater opening and closing door, and belongs to the technical field of underwater operation equipment. The opening and closing door comprises a door frame, a door body, a swinging telescopic cylinder, a telescopic rod barrel, a telescopic rod and a rotary translation mechanism; the swing telescopic cylinder and the telescopic rod barrel are fixedly mounted on a mounting structure of the door frame, the swing telescopic cylinder is connected with the door body through the rotary translation mechanism, the door body is embedded in the door frame, one end of the telescopic rod is matched with the telescopic rod barrel, and the other end of the telescopic rod is fixedly connected with the door body; the swing telescopic cylinder provides torque and horizontal push-pull force for the rotating translation mechanism, the rotating translation mechanism converts the torque into driving force for the door body to be vertically embedded into and moved out of the door frame, and the rotating translation mechanism drives the door body to translate in the horizontal direction under the action of the horizontal push-pull force. The telescopic rod and the telescopic rod cylinder are matched to conduct piston motion along with pushing and pulling of the door body. The opening and closing process of the underwater door is achieved in the modes of vertical embedding, moving-out and trackless translation, and the problem that impurities in water enter the guide rails to cause abnormal push and pull can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of underwater operation equipment, and in particular to an underwater opening and closing door. Background Art

[0002] As underwater operations become more and more popular, more and more equipment is deployed underwater. Therefore, the safety and stability requirements for underwater door openings are getting higher and higher. The underwater environment has two characteristics: one is that the water pressure is high, and the other is that there are more impurities underwater.

[0003] At present, according to the door opening and closing methods, commonly used doors include sliding doors and swing doors. Among them, swing doors are difficult to open under high underwater pressure, and they occupy too much space and cannot be used normally. Sliding doors have the characteristics of occupying small space and being easy to open. Therefore, it is a better method to choose sliding doors. In the past, the commonly used sliding doors used the guide rail push-pull method. However, due to the complex seabed environment and the presence of more impurities, impurities can easily enter the guide rails during the push-pull process, resulting in push-pull abnormalities. Summary of the invention

[0004] In view of this, the present invention provides an underwater opening and closing door, which realizes the opening and closing process of the underwater door by vertical embedding, removal and trackless translation, and can avoid the abnormal pushing and pulling problems caused by impurities in the water entering the guide rail.

[0005] An underwater opening and closing door comprises a door frame, a door body, a swing telescopic cylinder, a telescopic rod tube, a telescopic rod and a rotating and translating mechanism;

[0006] The swing telescopic cylinder and the telescopic rod are fixedly mounted on the mounting structure of the door frame. The swing telescopic cylinder is connected to the door body through a rotation and translation mechanism. The door body is embedded and mounted inside the door frame. One end of the telescopic rod cooperates with the telescopic rod, and the other end is fixedly connected to the door body.

[0007] The swing telescopic cylinder provides torque and horizontal push-pull force to the rotary translation mechanism, and the rotary translation mechanism converts the torque into a driving force for the door body to be vertically embedded in and removed from the door frame. Under the action of the horizontal push-pull force, the rotary translation mechanism drives the door body to translate in the horizontal direction;

[0008] The telescopic rod and the telescopic rod tube cooperate to perform piston movement as the door body is pushed and pulled, providing guidance and support for the opening and closing of the door body and the door frame.

[0009] Furthermore, the rotation and translation mechanism includes a rotating member, a sliding sleeve, a connecting member and a telescopic mechanism;

[0010] A telescopic mechanism is connected between the connecting member and the door body, one end of the rotating member is movably connected to the connecting member, and the other end is connected to the sliding rod on the door body through a sliding sleeve. The rotating member is connected to the output end of the swing telescopic cylinder. The rotating member transmits the torque of the swing telescopic cylinder and drives the sliding sleeve to slide up and down along the sliding rod. The movement of the sliding sleeve generates a component force on the door body that is perpendicular to the plane of the door frame. Under the limitation of the telescopic mechanism, the door body moves translationally in a direction perpendicular to the plane of the door frame.

[0011] Furthermore, the swing telescopic cylinder includes a swing cylinder and a telescopic cylinder. The output screw of the swing cylinder is fixedly connected to the telescopic cylinder. The swing cylinder outputs torque to the telescopic cylinder. The telescopic cylinder can output the torque of telescopic movement while transmitting the torque outward.

[0012] Furthermore, the swing cylinder comprises a cylinder body, a hollow screw, an elastic key, a spacer, a thrust bearing, an end cover and an output screw;

[0013] The output screw rod is installed into the cylinder body after being matched with the inner thread of the hollow screw rod, the outer thread of the hollow screw rod is matched with the inner thread of the cylinder body, and the threads on the output screw rod and the hollow screw rod have opposite rotation directions; a sealing ring is installed on the hollow screw rod, and the output screw rod is assembled with the cylinder body through an elastic key, a spacer ring, a thrust bearing and an end cover, and a sealing ring is installed on the inner and outer circles of the end cover, and a dust ring is installed on the inner circle; the output screw rod and the hollow screw rod jointly divide the inner cavity of the cylinder body into two cavities, and two oil ports are provided on the cylinder body, which are respectively connected with the two cavities, and the oil entering through the two oil ports controls the left and right translation of the hollow screw rod, and the output screw rod produces axial rotation due to the action of the spiral pair.

[0014] Further, the telescopic cylinder comprises a cylinder sleeve, a guide rod, a support sleeve and a swing telescopic rod;

[0015] The inner cavity of the cylinder sleeve is a cavity with a rectangular cross section;

[0016] One end of the swing telescopic rod is provided with a limit clamping platform, and the interior of the swing telescopic rod is processed with a semi-through hole;

[0017] The swing telescopic rod has one end with a limit clamping platform which is installed in the cylinder sleeve and limited therewith; the guide rod is located in the cylinder sleeve, one end of which is supported by a support sleeve, and the other end extends into the semi-through hole of the swing telescopic rod and is supported by the semi-through hole. Under the guiding action of the guide rod, the swing telescopic rod performs linear motion in the cylinder sleeve, and the motion stroke is the depth of the semi-through hole; the linear motion of the swing telescopic rod is driven by filling and discharging oil in the internal cavity of the cylinder sleeve and the internal cavity of the semi-through hole.

[0018] Beneficial effects:

[0019] 1. The present invention adopts a swinging telescopic cylinder to provide torque and push-pull force to the rotary translation mechanism. The rotary translation mechanism converts the torque into a driving force for the door body to be vertically embedded in and removed from the door frame. Under the action of the push-pull force, the rotary translation mechanism drives the door body to translate in the horizontal direction, thereby realizing the vertical embedding of the door body and the trackless removal in the horizontal direction, which can effectively avoid the push-pull abnormality caused by impurities in the water entering the guide rail.

[0020] 2. The rotation and translation mechanism of the present invention includes a rotating part, a sliding sleeve, a connecting part and a telescopic mechanism. The swinging telescopic rod directly transmits the torque to the rotating part. The rotation of the rotating part causes the sliding sleeve connected thereto to rotate synchronously. Since the sliding sleeve cooperates with the sliding rod on the door body and under the constraint of the telescopic mechanism, the rotation of the rotating part is converted into a translational movement of the door body perpendicular to the plane of the door frame. The two actions of embedding and removing the door body and the door frame can be completed by rotating in both positive and negative directions.

[0021] 3. The swinging telescopic cylinder of the present invention integrates the swinging cylinder and the telescopic cylinder into one, and utilizes the swinging cylinder to output torque to the telescopic cylinder. The telescopic cylinder can output the torque of telescopic movement while transmitting the torque outward. Both the torque and the telescopic movement torque are applied with large loads by hydraulic means, and are suitable for use in deep underwater environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the underwater opening and closing door of the present invention in a closed state;

[0023] Figure 2 This is a schematic diagram of the intermediate state of the underwater opening and closing door of the present invention;

[0024] Figure 3 This is a schematic diagram of the underwater opening and closing door of the present invention in an open state;

[0025] Figure 4 It is a schematic diagram of the specific structure of the rotation and translation mechanism;

[0026] Figure 5 It is a structural schematic diagram of the swing cylinder part of the swing telescopic cylinder;

[0027] Figure 6 It is a partial cross-sectional view of the telescopic cylinder in the swing telescopic cylinder.

[0028] Among them, 1-door frame, 2-swing telescopic cylinder, 3-telescopic rod tube, 4-telescopic rod, 5-rotating part, 6-sliding sleeve, 7-connecting part, 8-door body, 9-cylinder body, 10-hollow screw, 11-sealing ring, 12-elastic key, 13-spacer, 14-thrust bearing, 15-sealing ring, 16-end cover, 17-screw, 18-sealing ring, 19-dust ring, 20-output screw, 21-cylinder sleeve, 22-guide rod, 23-swing telescopic rod, 24-support sleeve. DETAILED DESCRIPTION

[0029] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0030] As attached Figure 1-3 As shown, the present invention provides an underwater opening and closing door, including three parts: a swing telescopic cylinder 2, a rotation and translation mechanism, and a door body 8. The swing telescopic cylinder 2 can rotate axially at any position. In order to make the swing telescopic cylinder 2 rotate after moving to the specified position, it is necessary to ensure that the door can be correctly embedded in the door frame 1 when the swing telescopic cylinder 2 is at the limit rod length position. In order to ensure that the door is always parallel to the door frame 1, its degree of freedom needs to be limited. In order to ensure that the door can translate into the door frame 1, a special rotation and translation mechanism needs to be added, as shown in the attached figure. Figure 4 As shown, the rotation and translation mechanism includes a rotating member 5, a sliding sleeve 6, a connecting member 7 and a telescopic mechanism.

[0031] Four telescopic mechanisms are connected between the connecting member 7 and the door body 8 to ensure that the door body 8 can translate perpendicularly to the door frame 1. One end of the rotating member 5 is movably connected to the connecting member 7, and the other end is connected to the sliding rod on the door body 8 through the sliding sleeve 6. The rotating member 5 is connected to the output end of the swing telescopic cylinder 2. The rotating member 5 transmits the torque of the swing telescopic cylinder 2 and drives the sliding sleeve 6 to slide up and down along the sliding rod. The movement of the sliding sleeve 6 generates a component force perpendicular to the plane of the door frame 1 on the door body 8. Under the limit of the telescopic mechanism, the door body 8 translates in a direction perpendicular to the plane of the door frame 1, and the distance of the door connecting member changes with the rotation of the rotating member 5. In the closed state, the rotating member 5 is perpendicular to the door body 8 and the distance is the farthest. At this time, it is the limit angle of the swing telescopic cylinder 2. During the opening process, the angle of the rotating member 5 in the intermediate state is consistent with that in the open state. At this time, it is another limit angle of the swing telescopic cylinder 2.

[0032] The swing telescopic cylinder 2 comprises a swing cylinder and a telescopic cylinder. The output screw 20 of the swing cylinder is fixedly connected to the telescopic cylinder. The swing cylinder outputs torque to the telescopic cylinder. The telescopic cylinder can output the torque of telescopic motion while transmitting the torque outward.

[0033] As attached Figure 5 As shown, the swing cylinder includes a cylinder body 9, a hollow screw 10, an elastic key 12, a spacer 13, a thrust bearing 14, an end cover 16, sealing rings 11, 15, 18, a dust ring 19 and an output screw 20;

[0034] The output screw 20 is installed into the cylinder body after being matched with the inner hole thread of the hollow screw 10, and the outer thread of the hollow screw 10 is matched with the inner thread of the cylinder body 9, and the thread rotation direction of the output screw 20 is opposite to that of the hollow screw 10; a sealing ring 11 is installed on the hollow screw 10, and the output screw 20 is assembled with the cylinder body 9 through an elastic key 12, a spacer 13, and a thrust bearing 14. The end cover 16 is fixed to the cylinder body 9 by a screw 17, and a sealing ring 15 is installed on the inner and outer circles of the end cover 16, and a sealing ring 18 and a dust ring 19 are installed on the inner circle; the output screw 20 and the hollow screw 10 jointly divide the inner cavity of the cylinder body into a cavity C and a cavity D, and two oil ports A and B are provided on the cylinder body, which are connected with the cavity C and the cavity D respectively. The pressure oil entering through the two oil ports A and B controls the left and right translation of the hollow screw 10, and the output screw 20 produces axial rotation due to the action of the spiral pair, thereby driving the overall rotation of the telescopic cylinder.

[0035] As attached Figure 6 As shown, the telescopic cylinder includes a cylinder sleeve 21, a guide rod 22, a support sleeve 24 and a swing telescopic rod 23. The inner cavity of the cylinder sleeve 21 is a cavity with a rectangular cross-section; one end of the swing telescopic rod 23 has a limit clamping platform, and the interior of the swing telescopic rod 23 is processed with a semi-through hole.

[0036] The swing telescopic rod 23 has one end with a limit clamp which is installed inside the cylinder sleeve 21 and cooperates with it to limit the position. The guide rod 22 is located inside the cylinder sleeve 21, one end of which is supported by the support sleeve 24, and the other end extends into the semi-through hole of the swing telescopic rod 23 and is supported by the semi-through hole. The swing telescopic rod 23 makes a linear motion inside the cylinder sleeve 21 under the guidance of the guide rod 22, and the motion stroke is the depth of the semi-through hole. The linear motion of the swing telescopic rod 23 is driven by filling and discharging oil in the internal cavity of the cylinder sleeve 21 and the internal cavity of the semi-through hole.

[0037] Closing process:

[0038] Step 1: When the sliding door is in the open state, the linear motion and rotational motion of the swing telescopic cylinder 2 are in the limit state respectively. Oil is pumped into the oil port of the rodless chamber in the swing telescopic cylinder to generate linear motion. At this time, the swing telescopic rod 23 in the swing telescopic cylinder is extended. Since the door restricts the degree of freedom, the door body translates parallel to the door frame 1 along with the swing telescopic rod 23.

[0039] Step 2: When the swing telescopic rod 23 reaches the farthest limit position and changes to the intermediate state, oil is pumped to the oil port of the swing telescopic cylinder that generates the rotational motion. At this time, the swing telescopic rod 23 of the swing telescopic cylinder 2 drives the rotating member 5 to rotate. The rotating member drives the sliding sleeve 6 to move. The straight-line distance between the connecting member 7 and the door body 8 increases as the rotating member 5 moves. The door body 8 begins to be embedded in the door frame 1 in a direction perpendicular to the door frame 1.

[0040] Step 3: When the rotation reaches the limit state, the door body 8 is completely embedded in the door frame 1. The door is closed. Figure 1 The status is closed.

[0041] Opening process:

[0042] Step 1: When the sliding door is in the open state, the linear motion and rotational motion of the swing telescopic cylinder 2 are in the limit state. Pump oil to the oil port of the swing telescopic cylinder 2 that generates the rotational motion. At this time, the swing telescopic cylinder drives the rotating member 5 to rotate, and the rotating member 5 drives the sliding sleeve 6 to move. The linear distance between the connecting member and the door decreases as the rotating member 5 rotates. The door body 8 begins to fit into the door frame 1.

[0043] Step 2: When the rotation reaches the limit state, it changes to the intermediate state, as shown in the attached figure. Figure 2 As shown, the door body 8 is completely embedded in the door frame 1, and oil is pumped to the oil port of the rod chamber of the swing telescopic cylinder 2 to produce linear motion. At this time, the swing telescopic rod 23 of the swing telescopic cylinder 2 is shortened. Since the door limits the degree of freedom, the door body 8 translates parallel to the door frame 1 along with the swing telescopic rod 23 of the swing telescopic cylinder 2.

[0044] Step 3: When the linear motion reaches the limit distance, the door body 8 is fully opened. The door is opened. Figure 3 shown.

[0045] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An underwater opening and closing door, characterized in that: It includes a door frame, a door body, a swing telescopic cylinder, a telescopic rod tube, a telescopic rod and a rotating and translating mechanism; The swing telescopic cylinder and the telescopic rod are fixedly mounted on the mounting structure of the door frame. The swing telescopic cylinder is connected to the door body through a rotation and translation mechanism. The door body is embedded and mounted inside the door frame. One end of the telescopic rod cooperates with the telescopic rod, and the other end is fixedly connected to the door body. The swing telescopic cylinder provides torque and horizontal push-pull force to the rotation and translation mechanism, and the rotation and translation mechanism converts the torque into a driving force for the door body to be vertically embedded in and removed from the door frame. Under the action of the horizontal push-pull force, the rotation and translation mechanism drives the door body to translate in the horizontal direction; The telescopic rod and the telescopic rod tube cooperate to perform piston movement as the door body is pushed and pulled, providing guidance and support for the opening and closing of the door body and the door frame.

2. An underwater opening and closing door according to claim 1, characterized in that: The rotation and translation mechanism comprises a rotating member, a sliding sleeve, a connecting member and a telescopic mechanism; A telescopic mechanism is connected between the connecting member and the door body, one end of the rotating member is movably connected to the connecting member, and the other end is connected to the sliding rod on the door body through a sliding sleeve. The rotating member is connected to the output end of the swing telescopic cylinder. The rotating member transmits the torque of the swing telescopic cylinder and drives the sliding sleeve to slide up and down along the sliding rod. The movement of the sliding sleeve generates a component force on the door body that is perpendicular to the plane of the door frame. Under the limitation of the telescopic mechanism, the door body moves translationally in a direction perpendicular to the plane of the door frame.

3. An underwater opening and closing door as claimed in claim 2, characterized in that: The swing telescopic cylinder comprises a swing cylinder and a telescopic cylinder. The output screw of the swing cylinder is fixedly connected to the telescopic cylinder. The swing cylinder outputs torque to the telescopic cylinder. The telescopic cylinder can output the torque of telescopic motion while transmitting the torque outward.

4. An underwater opening and closing door as claimed in claim 3, characterized in that: The swing cylinder comprises a cylinder body, a hollow screw, an elastic key, a spacer, a thrust bearing, an end cover and an output screw; The output screw rod is installed into the cylinder body after being matched with the inner thread of the hollow screw rod, the outer thread of the hollow screw rod is matched with the inner thread of the cylinder body, and the threads on the output screw rod and the hollow screw rod have opposite rotation directions; a sealing ring is installed on the hollow screw rod, and the output screw rod is assembled with the cylinder body through an elastic key, a spacer ring, a thrust bearing and an end cover, and a sealing ring is installed on the inner and outer circles of the end cover, and a dust ring is installed on the inner circle; the output screw rod and the hollow screw rod jointly divide the inner cavity of the cylinder body into two cavities, and two oil ports are provided on the cylinder body, which are respectively connected with the two cavities, and the oil entering through the two oil ports controls the left and right translation of the hollow screw rod, and the output screw rod produces axial rotation due to the action of the spiral pair.

5. An underwater opening and closing door as claimed in claim 3 or 4, characterized in that: The telescopic cylinder comprises a cylinder sleeve, a guide rod, a support sleeve and a swing telescopic rod; The inner cavity of the cylinder sleeve is a cavity with a rectangular cross section; One end of the swing telescopic rod is provided with a limit clamping platform, and the interior of the swing telescopic rod is processed with a semi-through hole; The swing telescopic rod has one end with a limit clamping platform which is installed in the cylinder sleeve and limited therewith; the guide rod is located in the cylinder sleeve, one end of which is supported by a support sleeve, and the other end extends into the semi-through hole of the swing telescopic rod and is supported by the semi-through hole. Under the guiding action of the guide rod, the swing telescopic rod performs linear motion in the cylinder sleeve, and the motion stroke is the depth of the semi-through hole; the linear motion of the swing telescopic rod is driven by filling and discharging oil in the internal cavity of the cylinder sleeve and the internal cavity of the semi-through hole.

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