Waterproof electric cylinder

Abstract

The utility model relates to the technical field of electric cylinders, in particular to a waterproof electric cylinder which comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a gear box and provided with six fixing holes, the left side of the upper end of the gear box is fixedly connected with a servo motor, and the output end of the servo motor penetrates through the upper end of the gear box and is fixedly connected with a driving gear. The upper portion of the inner surface of the cylinder sleeve is provided with a sealing structure and movably connected with a shaft rod in a penetrating mode, and the upper end of the shaft rod is fixedly connected with a connector. According to the waterproof electric cylinder, the sealing structure is arranged on the upper portion of the inner surface of the cylinder sleeve, and the buckle type sealing ring arranged in the sealing structure is located at the opening of the upper portion of the cylinder sleeve and tightly attached to the shaft rod, so that when the waterproof electric cylinder is operated and used, the buckle type sealing ring can scrape away water stains attached to the outer surface of the shaft rod when the shaft rod moves backwards, and the waterproof electric cylinder is convenient to use. And external water is prevented from entering the cylinder sleeve through the shaft rod to cause corrosion of internal parts of the device, and the service life of the device can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric cylinders, in particular to a waterproof electric cylinder. Background Art

[0002] The electric cylinder is an actuator that converts the rotary motion of the servo motor into the linear reciprocating motion of the lead screw. The electric cylinder has the advantages of high positioning accuracy, fast response speed, high transmission efficiency, strong stability, and small space occupation.

[0003] The existing electric cylinder has good performance and is applicable to many scenarios. However, when the electric cylinder is used outdoors or in water, water from the outside can easily enter the shaft sleeve through the shaft when the shaft moves. Over time, this will cause the screw inside the shaft sleeve to rust and affect the normal use of the device. Therefore, we have launched a new waterproof electric cylinder. Utility Model Content

[0004] The main purpose of the utility model is to provide a waterproof electric cylinder, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A waterproof electric cylinder comprises a base plate, the upper end of the base plate is fixedly connected to a gear box and is provided with six fixing holes, the left side of the upper end of the gear box is fixedly connected to a servo motor, the output end of the servo motor passes through the upper end of the gear box and is fixedly connected to a driving gear, the right side of the upper end of the gear box is fixedly connected to a cylinder sleeve, the upper part of the inner surface of the cylinder sleeve is provided with a sealing structure and is movably connected with a shaft rod, the upper end of the shaft rod is fixedly connected to a connecting head, a threaded hole is provided in the middle part of the lower end of the shaft rod, a lead screw is threadedly connected to the inner surface of the threaded hole, the lower part of the outer surface of the lead screw passes through the upper end of the gear box and is fixedly connected to a driven gear, and a linkage gear is meshed and connected between the outer surface of the driven gear and the outer surface of the driving gear.

[0007] Preferably, the sealing structure includes a buckle-type sealing ring, and a card groove, a first oil groove and a second oil groove are sequentially opened on the upper inner surface of the cylinder liner from top to bottom, and filling holes are opened on the left side of the inner surface of the first oil groove and the left side of the inner surface of the second oil groove, and the left sides of the inner surfaces of the two filling holes are inserted with sealing plugs.

[0008] Preferably, the six fixing holes are distributed at equal distances and do not contact each other, and the gear box is located between the six fixing holes and does not contact each other.

[0009] Preferably, the output end of the servo motor and the lead screw are both movably connected to the upper end of the gear box, and the lead screw is movably connected to the lower part of the inner surface of the cylinder sleeve without contact.

[0010] Preferably, the upper end of the linkage gear is movably connected to the inner upper wall of the gear box through a connecting shaft, and the driving gear, driven gear and linkage gear are all located inside the gear box and are not in contact with the gear box.

[0011] Preferably, the buckle-shaped sealing ring is located inside the card slot and is engaged with the card slot, the buckle-shaped sealing ring is movably connected to the shaft rod and fits tightly with the outer surface of the shaft rod, and the card slot, the first oil groove and the second oil groove do not contact each other.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. In the utility model, a sealing structure is provided on the upper part of the inner surface of the cylinder sleeve, and a buckle-shaped sealing ring provided in the sealing structure is located at the upper opening of the cylinder sleeve and is tightly fitted to the shaft rod. When the device is in operation, the buckle-shaped sealing ring can scrape off water stains adhering to the outer surface of the shaft rod when the shaft rod moves back, so as to prevent external water from entering the cylinder sleeve through the shaft rod and causing the internal parts of the device to rust, thereby extending the service life of the device. At the same time, the buckle-shaped sealing ring can be tightly fastened with the cylinder sleeve, so as to prevent the sealing ring from being separated from the cylinder sleeve due to the movement of the shaft rod when the device is in use;

[0014] 2. In the utility model, two oil grooves are provided in the sealing structure. Before the device is used, grease can be injected into the first oil groove and lubricating oil can be injected into the second oil groove. When the device is in use, both the grease and the lubricating oil can lubricate the shaft rod to avoid damage to the sealing ring due to the large friction between the sealing ring and the shaft rod. The lubricating oil can also continuously lubricate other components inside the device under the movement of the shaft rod to ensure the smoothness of the device when used. The grease can provide secondary protection. When a small amount of water stains pass over the sealing ring and enter the inside of the device, when passing the grease position, they will be engulfed by the grease, so that the water stains cannot continue to move into the inside of the device, further improving the sealing performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a waterproof electric cylinder of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of a waterproof electric cylinder of the utility model;

[0017] Figure 3 It is a schematic cross-sectional view of the overall structure of a cylinder sleeve of a waterproof electric cylinder of the utility model;

[0018] Figure 4 It is a schematic cross-sectional view of the overall structure of the sealing structure of a waterproof electric cylinder of the utility model.

[0019] In the figure: 1. base plate; 2. gear box; 3. fixing hole; 4. servo motor; 5. driving gear; 6. cylinder sleeve; 7. sealing structure; 8. shaft; 9. connector; 10. threaded hole; 11. screw rod; 12. driven gear; 13. linkage gear; 71. buckle-type sealing ring; 72. slot; 73. first oil tank; 74. second oil tank; 75. filling hole; 76. sealing plug. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] See also Figure 1-4 , the utility model provides a technical solution:

[0024] A waterproof electric cylinder comprises a bottom plate 1, a gear box 2 is fixedly connected to the upper end of the bottom plate 1 and is provided with six fixing holes 3, a servo motor 4 is fixedly connected to the left side of the upper end of the gear box 2, an output end of the servo motor 4 passes through the upper end of the gear box 2 and is fixedly connected to a driving gear 5, a cylinder sleeve 6 is fixedly connected to the right side of the upper end of the gear box 2, a sealing structure 7 is provided on the upper part of the inner surface of the cylinder sleeve 6 and a shaft rod 8 is interspersed and movably connected, a connector 9 is fixedly connected to the upper end of the shaft rod 8, a threaded hole 10 is provided in the middle part of the lower end of the shaft rod 8, a screw rod 11 is threadedly connected to the inner surface of the threaded hole 10, and the lower part of the outer surface of the screw rod 11 passes through the upper end of the gear box 2 and is fixed A driven gear 12 is fixedly connected, and a linkage gear 13 is meshed between the outer surface of the driven gear 12 and the outer surface of the driving gear 5. The six fixing holes 3 are equidistantly distributed and do not contact each other. The gear box 2 is located between the six fixing holes 3 and does not contact each other. The output end of the servo motor 4 and the lead screw 11 are movably connected to the upper end of the gear box 2 through insertion, and the lead screw 11 is movably connected to the lower part of the inner surface of the cylinder sleeve 6 through insertion and does not contact. The upper end of the linkage gear 13 is movably connected to the inner upper wall of the gear box 2 through a connecting shaft. The driving gear 5, the driven gear 12 and the linkage gear 13 are all located inside the gear box 2 and do not contact the gear box 2.

[0025] In this embodiment, the sealing structure 7 includes a buckle-type sealing ring 71, and a card groove 72, a first oil groove 73 and a second oil groove 74 are sequentially opened on the upper inner surface of the cylinder sleeve 6 from top to bottom. Filling holes 75 are opened on the left side of the inner surface of the first oil groove 73 and the left side of the inner surface of the second oil groove 74. The left sides of the inner surfaces of the two filling holes 75 are inserted and connected with sealing plugs 76. By providing two oil grooves in the sealing structure 7, grease can be injected into the first oil groove 73 and lubricating oil can be injected into the second oil groove 74 before the device is used. When the device is in use, the grease and the lubricating oil can lubricate the shaft rod 8 to avoid damage to the sealing ring due to the large friction between the sealing ring and the shaft rod 8.

[0026] In this embodiment, the buckle-type sealing ring 71 is located inside the card groove 72 and is engaged with the card groove 72. The buckle-type sealing ring 71 is movably connected with the shaft rod 8 and is tightly fitted with the outer surface of the shaft rod 8. The card groove 72, the first oil groove 73 and the second oil groove 74 do not contact each other. By providing a sealing structure 7 on the upper inner surface of the cylinder sleeve 6, the buckle-type sealing ring 71 provided in the sealing structure 7 is located at the upper opening of the cylinder sleeve 6 and is tightly fitted with the shaft rod 8. When the device is in operation, the buckle-type sealing ring 71 can scrape off water stains adhered to the outer surface of the shaft rod 8 when the shaft rod 8 moves back, thereby preventing external water from entering the cylinder sleeve 6 through the shaft rod 8 and causing rust on the internal components of the device, thereby extending the service life of the device.

[0027] It should be noted that the utility model is a waterproof electric cylinder, in which a sealing structure 7 is provided on the upper inner surface of the cylinder sleeve 6, and a buckle-shaped sealing ring 71 provided in the sealing structure 7 is located at the upper opening of the cylinder sleeve 6 and is tightly fitted with the shaft rod 8. When the device is in operation, the buckle-shaped sealing ring 71 can scrape off the water stains adhering to the outer surface of the shaft rod 8 when the shaft rod 8 moves back, so as to prevent the external water from entering the cylinder sleeve 6 through the shaft rod 8 and causing the internal parts of the device to rust, thereby extending the service life of the device. At the same time, the buckle-shaped sealing ring 71 can be tightly fastened with the cylinder sleeve 6, so as to prevent the sealing ring from being separated from the cylinder sleeve 6 due to the movement of the shaft rod 8 when the device is in use, and by There are two oil grooves in the device. Before the device is used, grease can be injected into the first oil groove 73 and lubricating oil can be injected into the second oil groove 74. When the device is in use, both grease and lubricating oil can lubricate the shaft rod 8 to avoid damage to the sealing ring due to the large friction between the sealing ring and the shaft rod 8. The lubricating oil can also continuously lubricate other components inside the device under the movement of the shaft rod 8 to ensure the smoothness of the device when used. The grease can provide secondary protection. When a small amount of water stains pass over the sealing ring and enter the inside of the device, when passing the grease position, they will be engulfed by the grease, so that the water stains cannot continue to move into the inside of the device, further improving the sealing performance of the device.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A waterproof electric cylinder, comprising a bottom plate (1), characterized in that: The upper end of the base plate (1) is fixedly connected to a gear box (2) and is provided with six fixing holes (3); the left side of the upper end of the gear box (2) is fixedly connected to a servo motor (4); the output end of the servo motor (4) passes through the upper end of the gear box (2) and is fixedly connected to a driving gear (5); the right side of the upper end of the gear box (2) is fixedly connected to a cylinder sleeve (6); the upper part of the inner surface of the cylinder sleeve (6) is provided with a sealing structure (7) and is movably connected with a shaft rod (8); the upper end of the shaft rod (8) is fixedly connected to a connector (9); the middle part of the lower end of the shaft rod (8) is provided with a threaded hole (10); the inner surface of the threaded hole (10) is threadedly connected to a screw rod (11); the lower part of the outer surface of the screw rod (11) passes through the upper end of the gear box (2) and is fixedly connected to a driven gear (12); the outer surface of the driven gear (12) and the outer surface of the driving gear (5) are meshed and connected with a linkage gear (13); The sealing structure (7) comprises a buckle-type sealing ring (71); a clamping groove (72), a first oil groove (73) and a second oil groove (74) are sequentially provided on the upper portion of the inner surface of the cylinder sleeve (6) from top to bottom; a filling hole (75) is provided on the left side of the inner surface of the first oil groove (73) and the left side of the inner surface of the second oil groove (74); and a sealing plug (76) is inserted and connected to the left side of the inner surface of the two filling holes (75).

2. The waterproof electric cylinder according to claim 1, characterized in that: The six fixing holes (3) are distributed at equal distances and do not contact each other, and the gear box (2) is located between the six fixing holes (3) and does not contact each other.

3. The waterproof electric cylinder according to claim 1, characterized in that: The output end of the servo motor (4) and the screw rod (11) are both interlaced and movably connected to the upper end of the gear box (2), and the screw rod (11) is interlaced and movably connected to the lower part of the inner surface of the cylinder sleeve (6) without contact.

4. The waterproof electric cylinder according to claim 1, characterized in that: The upper end of the linkage gear (13) is movably connected to the inner upper wall of the gear box (2) via a connecting shaft, and the driving gear (5), the driven gear (12) and the linkage gear (13) are all located inside the gear box (2) and are not in contact with the gear box (2).

5. The waterproof electric cylinder according to claim 1, characterized in that: The buckle-shaped sealing ring (71) is located inside the clamping groove (72) and is clamped and connected with the clamping groove (72). The buckle-shaped sealing ring (71) is interlaced and movably connected with the shaft rod (8) and is tightly fitted with the outer surface of the shaft rod (8). The clamping groove (72), the first oil groove (73) and the second oil groove (74) do not contact each other.

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