Internal circulation lubricating device of servo electric cylinder

Abstract

The utility model provides a servo electric cylinder internal circulation lubricating device which comprises an installation disc, a driving device arranged on the left side of the upper end of the installation disc, a cylinder arranged on the right side of the upper end of the installation disc, a straight cylinder arranged in the cylinder, a threaded rod arranged in the straight cylinder, a telescopic column arranged in the cylinder, and a threaded groove formed by upward sinking of the lower surface of the telescopic column. A storage box is arranged at the outer end of the straight barrel, a round barrel is arranged on the left side of the upper end of the storage box, a piston is arranged in the round barrel, an L-shaped plate is arranged at the upper end of the piston, one ends of a plurality of elastic pieces are arranged at the top end in the round barrel, the other ends of the elastic pieces are connected with the piston, and a feeding pipe is arranged at the rear end of the round barrel in a communicating mode and communicates with the storage box. According to the design, automatic feeding and spraying of lubricating oil are achieved through the piston, the hose and the feeding pipe, the friction coefficient of parts in the servo electric cylinder is prevented from being increased, the abrasion speed is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to an internal circulation lubrication device for a servo electric cylinder, belonging to the technical field of servo electric cylinders. Background Art

[0002] The servo electric cylinder is a power device that uses a servo motor as a driving force to drive the threaded rod in the fixed cylinder to rotate, thereby realizing the rapid extension and retraction of the telescopic column. In order to reduce the friction on the outer surface of the telescopic column, the connection between the telescopic rod and the threaded rod is generally lubricated. The traditional lubrication operation is generally manual lubrication, wherein a refueling hole is opened at the connection between the telescopic rod and the threaded rod before adding. When using, first pick up the filling gun containing lubricating oil, and then align the filling port of the filling gun with the refueling hole opened at the connection between the telescopic rod and the threaded rod. Secondly, the lubricating oil enters the servo electric cylinder through the refueling hole to realize the lubrication operation of the servo electric cylinder;

[0003] However, the lubricating oil of the servo electric cylinder needs to be added manually regularly. Long-term lubricating oil addition is prone to leakage. When leakage occurs, the friction coefficient between the moving parts inside the servo electric cylinder will increase significantly, resulting in greater resistance during operation, more power consumption, and even motor overload. At the same time, it will accelerate the wear rate of the internal parts of the servo electric cylinder and shorten the service life of the servo electric cylinder. Therefore, it is necessary to design a servo electric cylinder internal circulation lubrication device to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an internal circulation lubrication device for a servo electric cylinder to solve the problems raised in the above-mentioned background technology. The utility model realizes automatic loading and injection of lubricating oil through a piston, a hose and a feed pipe, thereby preventing the friction coefficient of the internal parts of the servo electric cylinder from increasing, reducing the wear rate and prolonging the service life.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a servo electric cylinder internal circulation lubrication device, including a mounting plate, a driving device is arranged on the left side of the upper end of the mounting plate, a cylinder is arranged on the right side of the upper end of the mounting plate, a straight cylinder is arranged in the cylinder, the lower end of the straight cylinder extends to the upper end of the mounting plate, a screw is arranged in the straight cylinder, the lower end of the screw passes through the mounting plate and is connected to the driving device, a telescopic column is arranged in the cylinder, the upper end of the telescopic column extends to the upper side of the cylinder and is movably connected to the cylinder, the lower surface of the telescopic column is recessed upward to form a threaded groove, the upper end of the screw extends into the threaded groove and is threadedly connected to the threaded groove, a storage box is arranged at the outer end of the straight cylinder, a circular cylinder is arranged on the left side of the upper end of the storage box, and the cylindrical cylinder is arranged in the cylindrical cylinder. A piston is slidably arranged, and one end of the vertical portion of an L-shaped plate is arranged on the upper end of the piston, and the other end of the vertical portion of the L-shaped plate extends to the upper end of the circular cylinder, and the transverse portion of the L-shaped plate is arranged on the upper side of the circular cylinder, and one end of a plurality of elastic members is arranged on the top end inside the circular cylinder, and the other end of the elastic member is connected to the piston, and the elastic member is arranged on the outside of the vertical portion of the L-shaped plate, and the rear end of the circular cylinder is connected to one end of a feed pipe with a one-way valve, and the other end of the feed pipe is connected to a storage box, and a connecting port between the feed pipe and the circular cylinder is arranged on the lower side of the piston, and one end of a hose with a one-way valve is connected to the rear end of the circular cylinder, and the other end of the hose is arranged facing the screw, and the hose is arranged on the left side of the feed pipe, and a connecting port between the hose and the circular cylinder is arranged on the lower side of the piston.

[0006] Furthermore, the driving device includes a motor arranged on the left side of the upper end of the mounting plate, the movable end of the motor passes through the mounting plate and is connected to the second gear, the first gear is arranged at the lower end of the screw, the first gear is arranged in the mounting plate, and the second gear is arranged in meshing with the first gear.

[0007] Furthermore, the storage box has a sealing groove that is concave outward toward the inner end, a sealing ring is arranged in the sealing groove, and the sealing ring is fitted on the outer end of the straight tube.

[0008] Furthermore, the upper end of the storage box is connected to a small opening of a conical cover, the straight cylinder is in the conical cover, the conical cover is arranged to be wide at the top and narrow at the bottom, and the conical cover is arranged on the right side of the circular cylinder.

[0009] Furthermore, a telescopic rod is arranged inside the elastic member, a fixed end of the telescopic rod is arranged at the top end inside the circular cylinder, and a movable end of the telescopic rod is connected to the piston.

[0010] Furthermore, a circular tube is arranged at the lower end of the transverse part of the L-shaped plate, the circular tube is arranged outside the screw, the hose is connected to the circular tube, and a plurality of nozzles are equidistantly connected to the inner end of the circular tube, and the nozzles are arranged facing the screw.

[0011] Furthermore, convex strips are arranged at both left and right ends of the telescopic column, and the cylinder is recessed outward toward the inner end to form a slot, and the convex strips are slidably arranged in the slot.

[0012] Beneficial effects of the utility model:

[0013] 1. The lubricating oil is sprayed out from the nozzle by descending the piston. When the telescopic column moves upward, the piston moves upward under the action of elastic force, so that the lubricating oil in the storage box enters the round cylinder through the feed pipe. The automatic feeding and injection of the lubricating oil are realized through the piston, hose and feed pipe, which prevents the increase of the friction coefficient of the internal parts of the servo electric cylinder, reduces the wear rate and prolongs the service life.

[0014] 2. The lubricating oil drips onto the inclined surface of the conical cover through its own action, and then gathers to the small end of the conical cover. Since the small end of the conical cover is connected to the storage box, the lubricating oil will enter the storage box, realizing the collection of the lubricating oil and the internal circulation of the lubricating oil in the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0016] Figure 1 This is a schematic diagram of the structure of a servo electric cylinder internal circulation lubrication device of the utility model;

[0017] Figure 2 This is a cross-sectional view of a servo electric cylinder internal circulation lubrication device of the utility model;

[0018] Figure 3 for Figure 2 A magnified view of part B;

[0019] Figure 4 for Figure 2 A magnified view of part A;

[0020] Figure 5 for Figure 2 Enlarged view of part C;

[0021] Figure 6 for Figure 2 A magnified view of the D portion;

[0022] In the figure: 1-mounting plate, 2-cylinder, 3-telescopic column, 4-screw, 5-storage box, 6-straight cylinder, 7-round cylinder, 8-piston, 9-elastic member, 10-hose, 11-L-shaped plate, 12-first gear, 13-second gear, 14-motor, 15-feeding pipe, 31-convex strip, 51-sealing ring, 52-conical cover, 81-telescopic rod, 101-round tube, 102-sprinkler. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1 and Figure 2 The utility model provides a technical solution: a servo electric cylinder internal circulation lubrication device, including a mounting plate 1, through which a mounting space is provided for a cylinder 2, a driving device is arranged on the left side of the upper end of the mounting plate 1, and the driving device can adopt a motor 14, and the motor 14 is used to realize the rotation of the second gear 13, a cylinder 2 is arranged on the right side of the upper end of the mounting plate 1, and a telescopic column 3 is arranged in the cylinder 2, and the telescopic operation is realized by the telescopic column 3, the upper end of the telescopic column 3 extends to the upper side of the cylinder 2 and is movably connected to the cylinder 2, the lower surface of the telescopic column 3 is recessed upward to form a thread groove, and the thread groove provides a movable space for the screw 4, and the upper end of the screw 4 extends into the thread groove and is threadedly connected to the thread groove;

[0025] The driving device includes a motor 14 arranged on the left side of the upper end of the mounting plate 1. The movable end of the motor 14 passes through the mounting plate 1 and is connected to the second gear 13. The rotation of the first gear 12 is realized by the second gear 13. The first gear 12 is arranged at the lower end of the screw 4. The first gear 12 is used to realize the rotation of the screw 4. The first gear 12 is arranged in the mounting plate 1. The second gear 13 is meshed with the first gear 12. The left and right ends of the telescopic column 3 are provided with convex strips 31. The cylinder 2 is concave outward toward the inner end to form a slot, and the convex strip 31 is slidably arranged in the slot.

[0026] When in use, the motor 14 is started first, so that the movable end of the motor 14 rotates, and then the second gear 13 connected to the movable end of the motor 14 rotates. Since the second gear 13 is meshingly arranged with the first gear 12, the rotation of the second gear 13 drives the first gear 12 to rotate, and at this time, the screw 4 connected to the first gear 12 is driven to rotate. When the screw 4 rotates, since the screw 4 is threadedly connected to the thread groove, the rotation of the screw 4 causes the telescopic column 3 to rotate, so that the telescopic column 3 moves upward under the action of the convex strip 31, and the telescopic operation is realized by mechanically rotating the screw 4.

[0027] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5, a cylinder 2 is used to provide an installation space for the screw 4, a straight cylinder 6 is arranged inside the cylinder 2, and the screw 4 is protected by the straight cylinder 6, the lower end of the straight cylinder 6 extends to the upper end of the mounting plate 1, the screw 4 is arranged inside the straight cylinder 6, and the movement of the telescopic column 3 is achieved by the screw 4, the lower end of the screw 4 passes through the mounting plate 1 and is connected to the driving device, and a storage box 5 is arranged at the outer end of the straight cylinder 6, and the storage box 5 is used to store the lubricating oil;

[0028] A circular cylinder 7 is arranged on the left side of the upper end of the storage box 5, and an installation space is provided for the piston 8 through the circular cylinder 7. The piston 8 is slidably arranged in the circular cylinder 7, and the piston 8 is used to extract the lubricating oil. One end of the vertical part of the L-shaped plate 11 is arranged on the upper end of the piston 8, and the movement of the piston 8 is realized through the L-shaped plate 11. The other end of the vertical part of the L-shaped plate 11 extends to the upper end of the circular cylinder 7. The transverse part of the L-shaped plate 11 is arranged on the upper side of the circular cylinder 7. One end of a plurality of elastic members 9 are arranged on the top end of the circular cylinder 7. The elastic member 9 can be a spring, and the movement of the piston 8 is realized by the spring. The other end of the elastic member 9 is connected to the piston 8, and the elastic member 9 is arranged on the outer side of the vertical part of the L-shaped plate 11;

[0029] The rear end of the circular cylinder 7 is connected to one end of a feed pipe 15 with a one-way valve, and the feed pipe 15 is used to transport the lubricating oil. The other end of the feed pipe 15 is connected to the storage box 5, and the communication port between the feed pipe 15 and the circular cylinder 7 is arranged at the lower side of the piston 8. The rear end of the circular cylinder 7 is connected to one end of a hose 10 with a one-way valve, and the lubricating oil is transported through the hose 10. The other end of the hose 10 is arranged facing the screw 4, and the hose 10 is arranged on the left side of the feed pipe 15. The communication port between the hose 10 and the circular cylinder 7 is arranged at the lower side of the piston 8.

[0030] The storage box 5 has a sealing groove that is recessed outward toward the inner end, and the sealing groove is used to provide an installation space for the sealing ring 51. The sealing ring 51 is arranged in the sealing groove, and the sealing operation is achieved through the sealing ring 51. The sealing ring 51 fits on the outer end of the straight tube 6, and a telescopic rod 81 is arranged in the elastic member 9. The piston 8 is guided by the telescopic rod 81. The fixed end of the telescopic rod 81 is arranged at the top of the inner part of the circular tube 7, and the movable end of the telescopic rod 81 is connected to the piston 8. A circular tube 101 is arranged at the lower end of the transverse part of the L-shaped plate 11, and the circular tube 101 is used to provide an installation space for the nozzle 102. The circular tube 101 is arranged on the outside of the screw 4, and the hose 10 is connected to the circular tube 101. A plurality of nozzles 102 are equidistantly connected to the inner end of the circular tube 101, and the spraying of lubricating oil is achieved through the nozzle 102, and the nozzle 102 is arranged facing the screw 4.

[0031] When the telescopic column 3 is lowered to the limit position, the lower end of the telescopic column 3 will contact the horizontal part of the L-shaped plate 11, so that the vertical part of the L-shaped plate 11 moves downward with the downward movement of the telescopic column 3, and then the piston 8 connected to the vertical part of the L-shaped plate 11 moves downward, and then the elastic member 9 connected to the piston 8 is stretched, so that the elastic member 9 generates elastic force, and then squeezes the lubricating oil on the lower side of the piston 8, and then the lubricating oil enters the hose 10, so that the lubricating oil enters the circular tube 101 through the hose 10, and then the lubricating oil enters the nozzle 102 and is sprayed out from the nozzle 102;

[0032] When the telescopic column 3 moves upward, the piston 8 will move upward under the action of the elastic force of the elastic member 9, thereby generating suction, and then under the action of the suction, the lubricating oil in the storage box 5 enters the feed pipe 15 and enters the circular cylinder 7 through the feed pipe 15. The automatic loading and injection of the lubricating oil is achieved through the piston 8, the hose 10 and the feed pipe 15, thereby preventing the friction coefficient of the internal parts of the servo electric cylinder from increasing, reducing the wear rate and increasing the service life.

[0033] See also Figure 2 and Figure 6 The upper end of the storage box 5 is connected to the small mouth of the conical cover 52, and the conical cover 52 is used to collect the lubricating oil. The straight cylinder 6 is in the conical cover 52, and the conical cover 52 is arranged to be wide at the top and narrow at the bottom. The conical cover 52 is arranged on the right side of the circular cylinder 7.

[0034] When the lubricating oil is sprayed onto the screw 4, the lubricating oil will enter the spiral groove on the screw 4. At the same time, a part of the lubricating oil will drip downward under its own action, so that the lubricating oil will drip onto the inclined surface of the conical cover 52, and then be guided by the inclined surface of the conical cover 52 to gather at the small end of the conical cover 52. Because the small end of the conical cover 52 is connected to the storage box 5, the lubricating oil will enter the storage box 5, so as to realize the collection of the lubricating oil and the internal circulation movement of the lubricating oil in the cylinder 2.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A servo electric cylinder internal circulation lubrication device, characterized in that: The invention comprises a mounting plate (1), a driving device is arranged on the left side of the upper end of the mounting plate (1), a cylinder (2) is arranged on the right side of the upper end of the mounting plate (1), a straight cylinder (6) is arranged inside the cylinder (2), the lower end of the straight cylinder (6) extends to the upper end of the mounting plate (1), a screw rod (4) is arranged inside the straight cylinder (6), the lower end of the screw rod (4) passes through the mounting plate (1) and is connected to the driving device, a telescopic column (3) is arranged inside the cylinder (2), the upper end of the telescopic column (3) extends to the upper side of the cylinder (2) and is movably connected to the cylinder (2), the lower surface of the telescopic column (3) is recessed upward to form a thread groove, the upper end of the screw rod (4) extends into the thread groove and is threadedly connected to the thread groove, a storage box (5) is arranged at the outer end of the straight cylinder (6), a circular cylinder (7) is arranged on the left side of the upper end of the storage box (5), a piston (8) is slidably arranged inside the circular cylinder (7), and one end of the vertical portion of an L-shaped plate (11) is arranged at the upper end of the piston (8), The other end of the vertical portion of the L-shaped plate (11) extends to the upper end of the circular cylinder (7), the transverse portion of the L-shaped plate (11) is arranged on the upper side of the circular cylinder (7), one end of a plurality of elastic members (9) is arranged at the top end of the circular cylinder (7), the other end of the elastic members (9) is connected to the piston (8), and the elastic members (9) are arranged on the outer side of the vertical portion of the L-shaped plate (11), the rear end of the circular cylinder (7) is connected to one end of a feed pipe (15) with a one-way valve, the other end of the feed pipe (15) is connected to the storage box (5), the communication port of the feed pipe (15) and the circular cylinder (7) is arranged on the lower side of the piston (8), the rear end of the circular cylinder (7) is connected to one end of a hose (10) with a one-way valve, the other end of the hose (10) is arranged facing the screw (4), the hose (10) is arranged on the left side of the feed pipe (15), and the communication port of the hose (10) and the circular cylinder (7) is arranged on the lower side of the piston (8).

2. The servo electric cylinder internal circulation lubrication device according to claim 1, characterized in that: The driving device comprises a motor (14) arranged on the left side of the upper end of the mounting plate (1), the movable end of the motor (14) passes through the mounting plate (1) and is connected to the second gear (13), the lower end of the screw rod (4) is provided with a first gear (12), the first gear (12) is arranged in the mounting plate (1), and the second gear (13) is arranged in meshing engagement with the first gear (12).

3. The servo electric cylinder internal circulation lubrication device according to claim 1, characterized in that: The storage box (5) has a sealing groove that is concave outwards towards the inner end, a sealing ring (51) is arranged in the sealing groove, and the sealing ring (51) is fitted on the outer end of the straight cylinder (6).

4. The servo electric cylinder internal circulation lubrication device according to claim 1, characterized in that: The upper end of the storage box (5) is connected to the small end of a conical cover (52), and the straight cylinder (6) is located in the conical cover (52). The conical cover (52) is arranged to be wide at the top and narrow at the bottom. The conical cover (52) is arranged on the right side of the circular cylinder (7).

5. The servo electric cylinder internal circulation lubrication device according to claim 1, characterized in that: A telescopic rod (81) is arranged inside the elastic member (9), a fixed end of the telescopic rod (81) is arranged at the top end inside the circular cylinder (7), and a movable end of the telescopic rod (81) is connected to the piston (8).

6. The servo electric cylinder internal circulation lubrication device according to claim 1, characterized in that: A circular tube (101) is arranged at the lower end of the transverse portion of the L-shaped plate (11), the circular tube (101) being arranged outside the screw (4), the hose (10) being arranged in communication with the circular tube (101), a plurality of nozzles (102) being arranged in communication with the inner end of the circular tube (101) at equal distances, the nozzles (102) being arranged facing the screw (4).

7. The servo electric cylinder internal circulation lubrication device according to claim 1, characterized in that: The left and right ends of the telescopic column (3) are both provided with convex strips (31), and the cylinder (2) is recessed outwards toward the inner end to form a slot, and the convex strip (31) is slidably arranged in the slot.

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