A sealing structure

Abstract

The utility model discloses a kind of sealing structures, including roof and bottom plate, the roof and bottom plate are connected by connecting plate, the connecting plate is located the two sides of roof length direction, a through slot is set on the bottom plate, the thickness direction of the through slot is penetrated, a sealing plate that can completely cover through slot is movably arranged between the roof and bottom plate, the upper surface of the bottom plate is provided with the sealing rubber ring around the outside of through slot, the inside of the connecting plate is provided with the limit part for limiting the moving direction of sealing plate, a rotating rod is rotatably arranged between two connecting plates, a plurality of rotating plates are arranged along the length direction of the rotating rod, a hinged rod is hinged to the end of the rotating plate away from the rotating rod, a connecting piece is provided on the sealing plate, the end of the hinged rod away from the rotating plate is hinged to the connecting piece, the up-down movement of sealing plate is realized by the rotation of rotating rod driven by motor, and it is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of rail transit equipment technology, specifically a sealing structure. Background Technology

[0002] In the air circulation or air conditioning systems of trains and high-speed railways, it is often necessary to seal and control the airflow channels to achieve functions such as temperature regulation, air purification, and pressure balance. Traditional sealing devices mostly use cylinders to directly move a pressure plate up and down to achieve sealing, but this structure has many shortcomings. The movement precision of the cylinder is relatively low, and it is difficult to accurately control the pressure and position, which can easily lead to incomplete sealing or excessive compression of the seal. The operation of the cylinder is easily affected by factors such as fluctuations in the air source pressure and gas impurities, resulting in unstable operation and a high probability of failure. Utility Model Content

[0003] Based on the above-mentioned problems existing in the prior art, the purpose of this utility model embodiment is to provide a sealing structure.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a sealing structure, including a top plate and a bottom plate, which are connected by a connecting plate. The connecting plate is located on both sides of the top plate along its length. A through groove extending through its thickness is formed on the bottom plate. A sealing plate that can completely cover the through groove is movably arranged between the top plate and the bottom plate. A sealing ring is provided on the upper surface of the bottom plate around the outside of the through groove. A limiting member for restricting the movement direction of the sealing plate is provided on the inner side of the connecting plate. A rotating rod is rotatably arranged between the two connecting plates. A driving member for driving the rotating rod to rotate is provided on the outer side of the connecting plate. A plurality of rotating plates are arranged in an array along the length of the rotating rod. A hinge rod is hinged to the end of the rotating plate away from the rotating rod. A connecting member is provided on the sealing plate. The end of the hinge rod away from the rotating plate is hinged to the connecting member.

[0005] Furthermore, a circular groove corresponding to the rotating rod is formed on the rotating plate, and the circular groove is recessed outward to form a receiving groove. A keyway corresponding to the receiving groove is recessed inward on the outer peripheral wall of the rotating rod, and a shaft key is provided between the keyway and the receiving groove.

[0006] Furthermore, the sealing plate includes a pressure plate and a reinforcing plate disposed on the upper surface of the pressure plate. The connecting member sequentially includes an integrally formed hinge part, a limiting part, and a connecting part. The connecting part passes through the reinforcing plate and the pressure plate from top to bottom, and a thread is provided on the outer peripheral wall of its lower half. The limiting part is located above the reinforcing plate and its diameter is larger than the diameter of the connecting part. The hinge part is hinged to the hinge rod.

[0007] Furthermore, the bottom surface of the top plate is provided with a plurality of support blocks arranged in an array, and the bottom surface of the support blocks is provided with an arc groove for the rotating rod to pass through.

[0008] Furthermore, the limiting component includes a slide rail, and fixing blocks are provided on both sides of the upper surface of the pressure plate. Rollers are rotatably provided on both sides of the fixing blocks along the width direction of the pressure plate, and the rollers roll along the outer side of the slide rail.

[0009] Furthermore, the bottom surface of the top plate is connected to several support plates, the two ends of which extend outwards from both sides of the width direction of the top plate, and the bottom plate is connected to the two ends of the support plates by connecting rods.

[0010] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: the sealing plate can be moved up and down by the rotation of the rotating rod driven by the motor, which has higher control precision and can avoid poor sealing performance due to too small displacement of the pressure plate or damage to the sealing ring due to too large displacement. The reinforcing plate can disperse the force on the pressure plate and prevent the pressure plate from being damaged. The support block can support the rotating rod and prevent the rotating rod from bending and deforming. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] In the picture: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front view of the present invention; In the picture: 11. Top plate; 111. Support block; 12. Bottom plate; 121. Through groove; 122. Sealing ring; 13. Connecting plate; 14. Support plate; 15. Connecting rod; 21. Rotating rod; 22. Rotating plate; 23. Hinge rod; 24. Connecting piece; 25. Motor; 3. Sealing plate; 31. Pressure plate; 32. Reinforcing plate; 4. Slide rail; 5. Fixing block; 51. Roller. Detailed Implementation

[0013] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0014] Please see Figure 1 and Figure 2This utility model provides a technical solution: a sealing structure, including a top plate 11 and a bottom plate 12, which are connected by a connecting plate 13. The connecting plate 13 is located on both sides of the top plate 11 along its length. A through groove 121 extending through its thickness is formed on the bottom plate 12. A sealing plate 3 that can completely cover the through groove 121 is movably disposed between the top plate 11 and the bottom plate 12. A sealing ring 122 surrounding the outside of the through groove 121 is provided on the upper surface of the bottom plate 12. The inner side of the connecting plate 13 is provided with a limiting member for restricting the movement direction of the sealing plate 3. A rotating rod 21 is rotatably arranged between the two connecting plates 13. A driving member for driving the rotating rod 21 to rotate is provided on the outer side of the connecting plate 13. The driving member is a motor 25. Several rotating plates 22 are arranged in an array along the length direction of the rotating rod 21. A hinge rod 23 is hinged to the end of the rotating plate 22 away from the rotating rod 21. A connecting member 24 is provided on the sealing plate 3. The end of the hinge rod 23 away from the rotating plate 22 is hinged to the connecting member 24.

[0015] The through groove 121 serves as an airflow channel. When the through groove 121 needs to be closed, the motor 25 drives the rotating rod 21 to rotate. The output end of the motor 25 is connected to the rotating rod 21 via a coupling. The other end of the rotating rod 21 rotates on the connecting plate 13 via a bearing. The limiting component limits the sealing plate 3, allowing it to move only in the vertical direction. The rotation of the rotating shaft drives the rotating plate 22 and the hinge rod 23 to rotate, gradually increasing the included angle between them. The sealing plate 3 also moves downwards accordingly. A sealing ring 122 is provided on the outer side of the through groove 121. The sealing plate 3 and the sealing ring 122 press against each other, making them fit more tightly and providing a better sealing effect. Compared with the traditional cylinder-driven downward movement of the sealing plate 3, the motor 25 has more accurate speed and angle control, avoiding excessive compression that could damage the sealing ring 122. Furthermore, the motor 25 operates stably and does not have problems such as wear and leakage of cylinder piston seals.

[0016] A circular groove corresponding to the rotating rod 21 is formed on the rotating plate 22. The circular groove is recessed outward to form a receiving groove. A keyway corresponding to the receiving groove is recessed inward on the outer peripheral wall of the rotating rod. A shaft key is provided between the keyway and the receiving groove. Through the cooperation of the keyway, the receiving groove and the shaft key, the rotating plate 22 and the rotating rod 21 will not rotate relative to each other. The rotation angles of the rotating rod 21 and the rotating plate 22 are the same, making it easier to control the stroke of the sealing plate 3 and preventing situations such as low sealing effect or excessive compression.

[0017] The sealing plate 3 includes a pressure plate 31 and a reinforcing plate 32 disposed on the upper surface of the pressure plate 31. The connecting member 24 includes an integrally formed hinge part, a limiting part and a connecting part. The connecting part passes through the reinforcing plate 32 and the pressure plate 31 from top to bottom, and a thread is provided on the outer peripheral wall of its lower half. The limiting part is located above the reinforcing plate 32 and its diameter is larger than the diameter of the connecting part. The hinge part is hinged to the hinge rod 23. The connecting part passes through the reinforcing plate 32 and the pressure plate 31 and is screwed into the nut. The nut and the limiting device fix the reinforcing plate 32 and the pressure plate 31. The rotating rod 21 rotates and applies a downward force to the pressure plate 31 through the hinge rod 23. The reinforcing plate 32 can disperse the force, reducing the pressure on the pressure plate 31 and preventing damage to the pressure plate 31. The bottom surface of the top plate 11 is provided with a number of support blocks 111 arranged in an array, and the bottom surface of the support blocks 111 is provided with an arc groove for the rotating rod 21 to pass through. After the sealing plate 3 and the sealing ring 122 are attached, a certain downward force needs to be applied to the sealing plate 3 to enhance the sealing between the sealing plate 3 and the sealing ring 122. Since the forces are mutual, the rotating rod 21 will also receive an upward force. The rotating rod 21 is supported by the support block 111, which improves the force distribution of the rotating rod 21, making it less prone to bending and deformation, thus improving the stability of the entire structure and enhancing the load-bearing capacity of the rotating rod 21.

[0018] The limiting component includes a slide rail 4, and fixing blocks 5 are provided on both sides of the upper surface of the pressure plate 31. Rollers 51 are rotatably provided on both sides of the fixing blocks 5 along the width direction of the pressure plate 31, and the rollers 51 roll along the outer side of the slide rail 4. The pressure plate 31 is limited by the slide rail 4 so that it can only move in the vertical direction. The original sliding is replaced by the rolling of the roller 51, which reduces friction and also reduces the wear caused by friction, thus improving service life.

[0019] The bottom surface of the top plate 11 is connected to a plurality of support plates 14, the two ends of the support plates 14 extending out of the two sides of the width direction of the top plate 11, and the bottom plate 12 is connected to the two ends of the support plates 14 by a connecting rod 15. The support plate 14 and connecting rod 15 further connect and reinforce the top plate 11 and the bottom plate 12, thereby improving the stability of the entire structure.

[0020] Working principle: When it is necessary to seal the through groove 121, the control motor 25 rotates forward, driving the rotating shaft to rotate. The rotating shaft drives the hinge structure to move, causing the pressure plate 31 to move downward. The pressure plate 31 contacts and squeezes the sealing ring 122. The sealing ring 122 undergoes elastic deformation and fits tightly against the pressure plate 31, sealing the through groove 121 and preventing air from flowing. When it is necessary to ventilate the through groove 121, the control motor 25 rotates in reverse, driving the pressure plate 31 to move upward, opening the through groove 121, and allowing air to pass through normally.

[0021] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A sealing structure, characterized in that: The device includes a top plate and a bottom plate, which are connected by a connecting plate located on both sides of the top plate along its length. A through groove extending through the thickness of the bottom plate is formed on the bottom plate. A sealing plate, capable of completely covering the through groove, is movably disposed between the top and bottom plates. A sealing ring surrounds the outside of the through groove on the upper surface of the bottom plate. A limiting member for restricting the movement direction of the sealing plate is provided on the inner side of the connecting plate. A rotating rod is rotatably disposed between the two connecting plates. A driving member for driving the rotating rod is provided on the outer side of the connecting plate. Several rotating plates are arranged in an array along the length of the rotating rod. A hinge rod is hinged to the end of each rotating plate away from the rotating rod. A connecting member is provided on the sealing plate, and the end of the hinge rod away from the rotating plate is hinged to the connecting member.

2. The sealing structure according to claim 1, characterized in that: A circular groove corresponding to the rotating rod is formed on the rotating plate. The circular groove is recessed outward to form a receiving groove. A keyway corresponding to the receiving groove is recessed inward on the outer peripheral wall of the rotating rod. A shaft key is provided between the keyway and the receiving groove.

3. The sealing structure according to claim 1, characterized in that: The sealing plate includes a pressure plate and a reinforcing plate disposed on the upper surface of the pressure plate. The connecting part includes an integrally formed hinge part, a limiting part and a connecting part. The connecting part passes through the reinforcing plate and the pressure plate from top to bottom and has a threaded line on the outer peripheral wall of its lower half. The limiting part is located above the reinforcing plate and its diameter is larger than the diameter of the connecting part. The hinge part is hinged to the hinge rod.

4. The sealing structure according to claim 1, characterized in that: The bottom surface of the top plate is provided with a number of support blocks arranged in an array, and the bottom surface of the support blocks is provided with an arc groove for the rotating rod to pass through.

5. The sealing structure according to claim 3, characterized in that: The limiting component includes a slide rail, and fixing blocks are provided on both sides of the upper surface of the pressure plate. Rollers are rotatably provided on both sides of the fixing blocks along the width direction of the pressure plate, and the rollers roll along the outer side of the slide rail.

6. The sealing structure according to claim 1, characterized in that: The bottom surface of the top plate is connected to several support plates, and the two ends of the support plates extend outwards from both sides of the width direction of the top plate. The bottom plate is connected to the two ends of the support plates by connecting rods.

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