A telescopic electric cylinder variable speed structure that is convenient for adjustment

Abstract

The present invention discloses a telescopic electric cylinder variable speed structure convenient for adjustment, including a gearbox mechanism. The gearbox mechanism includes a housing. On both sides inside the housing, a driven shaft and a driving shaft are respectively arranged. A driven gear is fixedly connected to the outer surface of the driven shaft. Through the arrangement of the blades, when the telescopic electric cylinder is in use, the driven gear can drive the attached gear to rotate, and the blades can scrape up the oil fluid, and the oil fluid is scattered outward along the inclined surface of the blades. By using the liquid-scattering edge, the oil fluid is secondarily guided, so that the oil fluid is scattered obliquely upward, and the oil fluid is gathered at the upper end inside the housing. The oil fluid drips from the upper end inside the housing, and the oil fluid can drip on the driven gear, the driving gear and the intermediate gear. In this way, the position of the oil fluid is adjusted to ensure that there is oil fluid on the gears in the state of low oil volume, thereby avoiding gear damage, and this design does not require manual adjustment of the oil fluid, and is relatively convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of telescopic electric cylinders, and specifically to a variable-speed structure of a telescopic electric cylinder that is convenient for adjustment. Background Art

[0002] A telescopic electric cylinder is a device that realizes telescoping through the drive of a motor and is widely used in fields such as home, industry, medical treatment, and automobiles. Among them, the speed change of the telescopic electric cylinder is achieved by the meshing of gears in a gearbox, converting the small torque of the motor into a large torque and the high-speed rotation into a low-speed rotation to provide a higher torque to ensure the thrust of the telescopic electric cylinder.

[0003] In the prior art, such as Chinese Patent CN117846448A, an electric telescopic rod is disclosed, which includes: a first end; a second end, the second end being arranged to be able to approach or move away from the first end; one of the first end and the second end is connected to a door component of a vehicle, and the other is connected to the vehicle body; wherein, the electric telescopic rod includes a length direction, and the second end can approach or move away from the first end along this length direction; a driving device arranged at the first end for providing a driving force; and a lead screw and nut assembly, the lead screw and nut assembly including a lead screw and a nut that cooperates with the lead screw, the driving device being used to drive the lead screw to rotate and making the nut move along the axis direction of the lead screw through the rotation of the lead screw; wherein, when the nut moves along the axis direction of the lead screw, it drives the second end to approach or move away from the first end.

[0004] However, in the prior art, as the use time of the gearbox in the telescopic electric cylinder increases, the amount of gear oil will gradually decrease. Therefore, during use, it is necessary to ensure that the oil in the gearbox is sufficient. After long-term use, when the oil in the gearbox decreases, some gears will not be able to contact the oil, which easily causes some gears to be damaged, and the later replacement is more troublesome, increasing the use cost. Summary of the Invention

[0005] The purpose of the present invention is to provide a variable-speed structure of a telescopic electric cylinder that is convenient for adjustment, so as to solve the problem proposed in the above background art that as the use time of the gearbox in the telescopic electric cylinder increases, the amount of gear oil will gradually decrease. Therefore, during use, it is necessary to ensure that the oil in the gearbox is sufficient. After long-term use, when the oil in the gearbox decreases, some gears will not be able to contact the oil, which easily causes some gears to be damaged, and the later replacement is more troublesome, increasing the use cost.

[0006] To achieve the above object, the present invention provides the following technical solution: A telescopic electric cylinder variable speed structure that is easy to adjust, including a gearbox mechanism. The gearbox mechanism includes a housing. On both sides inside the housing, a driven shaft and a driving shaft are respectively arranged. A driven gear is fixedly connected to the outer surface of the driven shaft. A liquid adjusting structure is arranged inside the housing. The liquid adjusting structure includes a mounting seat. The mounting seat is installed at the lower end inside the housing. A bearing is installed inside the mounting seat. An attaching shaft is installed on the inner ring surface of the bearing. A lower middle part of the outer surface of the attaching shaft is fixedly connected with an attaching gear. The attaching gear meshes with the driven gear. A liquid adjusting block is arranged on the outer surface of the attaching shaft. Blades are fixedly connected to the outer surface of the liquid adjusting block. A liquid dispersing edge is fixedly connected to the outer edge of one side of the blade. The side of the liquid dispersing edge close to the liquid adjusting block is set as an inclined surface. Through the setting of the blades, when the telescopic electric cylinder is in use, the rotation of the driven gear can drive the attaching gear to rotate. The blades can scrape up the oil liquid and make the oil liquid disperse outward along the inclined surface of the blades. By using the liquid dispersing edge, the oil liquid is secondarily guided to make the oil liquid disperse obliquely upward, so that the oil liquid gathers at the upper end inside the housing. The oil liquid drips from the upper end inside the housing, enabling the oil liquid to drip on the driven gear, the driving gear, and the intermediate gear. In this way, the position of the oil liquid is adjusted to ensure that there is oil liquid left on the gears in the state of low oil volume, thereby avoiding gear damage. And this design does not require manual adjustment of the oil liquid, and is relatively convenient to use.

[0007] Preferably, an empty groove is opened in the upper middle part inside the liquid adjusting block. A sealing gasket is adhesively fixed to the upper end of the liquid adjusting block. An air injection nozzle is installed on the upper end of the sealing gasket. Through the setting of the empty groove and the air injection nozzle, during use, gas is injected into the empty groove through the air injection nozzle to make the inside of the empty groove in a high-pressure state. The buoyancy can be utilized to make the liquid adjusting block float. When there is more oil liquid, the inner pushing block does not contact the matching block, and the liquid adjusting block does not rotate. In this way, when there is more oil liquid, the liquid adjusting block can be prevented from rotating, reducing energy consumption. At the same time, damage to the liquid adjusting block in the high-resistance state can be avoided, and the service life is increased.

[0008] Preferably, an inner pushing block is fixedly connected between the outer surface of the attaching shaft and the upper end of the attaching gear. The upper end of the inner pushing block is designed in an arc shape.

[0009] Preferably, a matching block is fixedly connected to the lower middle part inside the liquid adjusting block. The liquid adjusting block is movably connected to the attaching shaft. Through the setting of the matching block, there is more air in the lower middle part inside the liquid adjusting block. Combining with the arc surface at the top of the inner pushing block, the connection difficulty between the inner pushing block and the matching block is reduced.

[0010] Preferably, a notch is opened at the upper end of the attaching gear. A flexible magnetic sheet is fixedly connected inside the notch.

[0011] Preferably, a bottom groove is provided at the outer edge of the lower end of the liquid adjusting block, and an iron sheet is fixedly connected to the inside of the bottom groove. By setting the iron sheet and the flexible magnetic sheet, the liquid adjusting block can be adsorbed by magnetic force when the oil level is low, thereby promoting the connection between the inner push block and the matching block, thereby ensuring that the position of the oil can be adjusted when the oil level is low.

[0012] Preferably, the upper end of the attachment shaft is rotatably connected to an end plate, and one end of the end plate is fixedly connected to the box shell.

[0013] Preferably, a mounting groove is provided on one side of the box shell, a No. 1 through groove is provided in the middle of one side of the mounting groove, a pressure-sealed cover is provided in the middle of the box shell, a transparent plate is provided on one side of the pressure-sealed cover, the transparent plate is clamped with the mounting groove, a No. 2 through groove is provided in the middle of the transparent plate, the transparent plate is fixedly connected to the box shell by bolts, sealing strips need to be installed between the two sides of the pressure-sealed cover and the mounting groove and the transparent plate to prevent the outflow of oil, and the setting of the pressure-sealed cover can facilitate the observation of the amount of oil inside the box shell, so as to facilitate the timely replenishment of the oil inside the box shell.

[0014] Preferably, both sides of the upper end of the box shell are fixedly connected with a telescopic cylinder mounting seat and a motor mounting seat, respectively, one side of the lower end of the box shell is fixedly connected with a limiting seat, the lower end of the limiting seat is fixedly connected with a connecting ear, the two ends of the driven shaft are rotatably connected to the telescopic cylinder mounting seat and the limiting seat, respectively, and the upper end of the driving shaft is rotatably connected to the motor mounting seat.

[0015] Preferably, the interior of the box shell is rotatably connected to a central rotating shaft, the outer surface of the central rotating shaft is fixedly connected to a central rotating gear, the central rotating gear is used to mesh with a driving gear and a driven gear, and one side of the box shell is fixedly connected to a side sealing plate, and an oil inlet nozzle is installed above the middle of the side sealing plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, by setting the blades, when the telescopic electric cylinder is in use, the driven gear can be rotated to drive the attached gear to rotate, the blades are used to scrape up the oil, and the oil is dispersed outward along the inclined surface of the blades. The oil is secondary guided by the dispersion edge to disperse the oil upward obliquely, so that the oil is collected at the upper end of the box shell, and the oil drips from the upper end of the box shell so that the oil can drip on the driven gear, the driving gear and the transfer gear. In this way, the position of the oil is adjusted to ensure that the gear can have oil when the oil amount is low, thereby avoiding gear damage. In addition, the design does not require manual adjustment of the oil, and is more convenient to use.

[0018] 2. In the present invention, through the settings of the empty groove and the gas injection nozzle, during use, gas is injected into the empty groove through the gas injection nozzle, making the inside of the empty groove in a high-pressure state. The buoyancy can be utilized to make the liquid adjustment block float. When there is a large amount of oil, the inner push block does not contact the mating block, and the liquid adjustment block does not rotate. Thus, when there is a large amount of oil, the rotation of the liquid adjustment block can be prevented, the energy consumption can be reduced, and at the same time, the damage of the liquid adjustment block in a high-resistance state can be avoided, increasing the service life.

[0019] 3. In the present invention, through the settings of the iron sheet and the flexible magnetic sheet, when the oil level is low, the liquid adjustment block can be adsorbed by magnetic force to promote the connection between the inner push block and the mating block, ensuring that the position of the oil can be adjusted when the oil level is low. Through the setting of the mating block, there is more air below the middle part inside the liquid adjustment block, and in combination with the arc surface at the top of the inner push block, the connection difficulty between the inner push block and the mating block is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic three-dimensional structure diagram of a variable-speed structure of a telescopic electric cylinder that is easy to adjust according to the present invention Figure 1 ;

[0021] Figure 2 is a schematic three-dimensional structure diagram of a variable-speed structure of a telescopic electric cylinder that is easy to adjust according to the present invention Figure 2 ;

[0022] Figure 3 is a schematic internal structure diagram of a variable-speed structure of a telescopic electric cylinder that is easy to adjust according to the present invention;

[0023] Figure 4 is a schematic partial structure expansion diagram of a variable-speed structure of a telescopic electric cylinder that is easy to adjust according to the present invention;

[0024] Figure 5 is a schematic three-dimensional structure diagram of a liquid adjustment structure in a variable-speed structure of a telescopic electric cylinder that is easy to adjust according to the present invention;

[0025] Figure 6 is an exploded view of a liquid adjustment structure in a variable-speed structure of a telescopic electric cylinder that is easy to adjust according to the present invention;

[0026] Figure 7 is a variable-speed structure of a telescopic electric cylinder that is easy to adjust according to the present invention Figure 6 Schematic enlarged structure diagram of area A therein;

[0027] Figure 8 is a schematic three-dimensional structure diagram of a liquid adjustment block in a variable-speed structure of a telescopic electric cylinder that is easy to adjust according to the present invention.

[0028] In the figure:

[0029] 1. Gearbox mechanism; 11. Housing; 12. Connecting ear; 13. Limiting seat; 14. Motor mounting seat; 15. Telescopic cylinder mounting seat; 16. Side seal plate; 17. Oil inlet nozzle; 18. Pressing seal cover; 19. Transparent plate; 110. Driving shaft; 111. Driven shaft; 112. Driven gear; 113. Driving gear; 114. Intermediate rotating shaft; 115. Intermediate gear; 116. Mounting groove; 117. First through groove; 118. Second through groove;

[0030] 2. Liquid adjusting structure; 21. Mounting seat; 22. Attached gear; 23. End plate; 24. Bearing; 25. Attached shaft; 26. Sealing gasket; 27. Liquid adjusting block; 28. Blade; 29. Inner pushing block; 210. Notch; 211. Gas injection nozzle; 212. Empty groove; 213. Iron sheet; 214. Flexible magnetic sheet; 215. Liquid dispersing edge; 216. Bottom groove; 217. Fitting block. Detailed implementation mode

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1: Refer to Figure 1 - Figure 8 As shown in the figure: A telescopic electric cylinder variable speed structure that is convenient to adjust, including a gearbox mechanism 1. The gearbox mechanism 1 includes a housing 11. On both sides inside the housing 11, a driven shaft 111 and a driving shaft 110 are respectively arranged. A driven gear 112 is fixedly connected to the outer surface of the driven shaft 111. A liquid adjusting structure 2 is arranged inside the housing 11. The liquid adjusting structure 2 includes a mounting seat 21. The mounting seat 21 is installed at the lower end inside the housing 11. A bearing 24 is installed inside the mounting seat 21. An attached shaft 25 is installed on the inner ring surface of the bearing 24. An attached gear 22 is fixedly connected to the lower middle part of the outer surface of the attached shaft 25. The attached gear 22 meshes with the driven gear 112. A liquid adjusting block 27 is arranged on the outer surface of the attached shaft 25. A blade 28 is fixedly connected to the outer surface of the liquid adjusting block 27. A liquid dispersing edge 215 is fixedly connected to the outer edge of one side of the blade 28. The side of the liquid dispersing edge 215 close to the liquid adjusting block 27 is set as an inclined surface.

[0033] In the present invention, through the arrangement of the blade 28, when the telescopic electric cylinder is in use, the rotation of the driven gear 112 can drive the attached gear 22 to rotate. The blade 28 is used to scrape up the oil fluid, and the oil fluid is scattered outward along the inclined surface of the blade 28. The liquid scattering edge 215 is used to conduct the oil fluid for the second time, so that the oil fluid is scattered obliquely upward, and the oil fluid is gathered at the upper end inside the housing 11. The oil fluid drips from the upper end inside the housing 11, so that the oil fluid can drip on the driven gear 112, the driving gear 113 and the intermediate gear 115. In this way, the position of the oil fluid is adjusted to ensure that there is oil fluid on the gear in the state of low oil volume, thereby avoiding gear damage, and this design does not require manual adjustment of the oil fluid, which is relatively convenient to use.

[0034] Embodiment 2: Figure 5 - Figure 8 As shown, an empty groove 212 is opened above the middle part inside the liquid adjusting block 27. A sealing gasket 26 is adhesively fixed to the upper end of the liquid adjusting block 27. An air injection nozzle 211 is installed at the upper end of the sealing gasket 26. An inner push block 29 is fixedly connected between the outer surface of the attached shaft 25 and the upper end of the attached gear 22. The upper end of the inner push block 29 is designed in an arc shape. A matching block 217 is fixedly connected to the lower part of the middle part inside the liquid adjusting block 27. The liquid adjusting block 27 is movably connected to the attached shaft 25. A notch 210 is opened at the upper end of the attached gear 22. A flexible magnetic sheet 214 is fixedly connected inside the notch 210. A bottom groove 216 is opened at the outer edge of the lower end of the liquid adjusting block 27. An iron sheet 213 is fixedly connected inside the bottom groove 216. The upper end of the attached shaft 25 is rotatably connected to an end plate 23. One end of the end plate 23 is fixedly connected to the housing 11. The liquid adjusting block 27 and the blade 28 are made of plastic material to reduce the weight of the liquid adjusting block 27 and the blade 28 and ensure the floating of the liquid adjusting block 27 when there is more oil fluid.

[0035] In the present invention, through the arrangement of the empty groove 212 and the air injection nozzle 211, during use, gas is injected into the empty groove 212 through the air injection nozzle 211 to make the inside of the empty groove 212 in a high-pressure state. The buoyancy can be used to make the liquid adjusting block 27 float, and when there is more oil fluid, the inner push block 29 does not contact the matching block 217, so that the liquid adjusting block 27 does not rotate. In this way, the rotation of the liquid adjusting block 27 can be avoided when there is more oil fluid, the energy consumption can be reduced, and at the same time, the damage of the liquid adjusting block 27 in the high-resistance state can be avoided, and the service life can be increased;

[0036] Through the arrangement of the iron sheet 213 and the flexible magnetic sheet 214, when the oil fluid is at a low level, the liquid adjusting block 27 can be adsorbed by magnetic force to promote the connection between the inner push block 29 and the matching block 217, ensuring that the position of the oil fluid can be adjusted when the oil fluid is at a low level. Through the arrangement of the matching block 217, there is more air below the middle part inside the liquid adjusting block 27. Combining with the arc surface at the top of the inner push block 29, the connection difficulty between the inner push block 29 and the matching block 217 is reduced.

[0037] Embodiment 3: According to Figure 1 - Figure 4 As shown in the figure, an installation groove 116 is formed on one side of the box shell 11. A first through groove 117 is formed in the middle of one side of the installation groove 116. A pressure sealing cover 18 is clamped in the middle of the box shell 11. A transparent plate 19 is arranged on one side of the pressure sealing cover 18. The transparent plate 19 is clamped with the installation groove 116. A second through groove 118 is formed through the middle of the transparent plate 19. The transparent plate 19 is fixedly connected to the box shell 11 through the bolts arranged. On both sides of the upper end of the box shell 11, a telescopic cylinder mounting seat 15 and a motor mounting seat 14 are respectively fixedly connected. On one side of the lower end of the box shell 11, a limiting seat 13 is fixedly connected. A connecting ear 12 is fixedly connected to the lower end of the limiting seat 13. Both ends of the driven shaft 111 are rotatably connected to the telescopic cylinder mounting seat 15 and the limiting seat 13 respectively. The upper end of the driving shaft 110 is rotatably connected to the motor mounting seat 14. A middle rotating shaft 114 is rotatably connected inside the box shell 11. A middle rotating gear 115 is fixedly connected to the outer surface of the middle rotating shaft 114. The middle rotating gear 115 is used to mesh with the driving gear 113 and the driven gear 112. A side sealing plate 16 is fixedly connected to one side of the box shell 11. An oil inlet nozzle 17 is installed above the middle of the side sealing plate 16. Sealing strips need to be installed between the two sides of the pressure sealing cover 18 and the installation groove 116 and the transparent plate 19 to prevent the outflow of the oil fluid. Through the setting of the pressure sealing cover 18, it is convenient to observe the oil fluid amount inside the box shell 11 and facilitate the timely replenishment of the oil fluid inside the box shell 11.

[0038] The method of use and working principle of the device: when in use, connect the telescopic cylinder mounting seat 15 with the cylinder body of the telescopic electric cylinder, connect the threaded rod inside it with the driven shaft 111, connect the motor with the motor mounting seat 14, and connect the motor shaft with the drive shaft 110. When telescopic is needed, the driven gear 112 is driven to rotate forward and reversely through the forward and reverse rotation of the motor, and the threaded rod is driven to rotate to achieve telescopic. When the driven gear 112 rotates, the matching gear 22 is driven to rotate. When there is more oil, the liquid regulating block 27 is in a floating state. After long-term use, when the oil is reduced, the height of the liquid regulating block 27 gradually decreases. When the iron sheet 213 and the flexible magnetic sheet 214 are close to each other, the iron sheet 213 and the flexible magnetic sheet 214 are adsorbed by magnetic force. Through the arc surface of the end of the inner push block 29, when the matching block 217 contacts the end of the inner push block 29, the liquid regulating block 27 is moved. Through the adsorption of magnetic force, the matching block 217 moves with the arc surface, so that the matching block 217 contacts the inner push block 29, and then when the driven gear 112 rotates forward or turns over, when the liquid regulating block 27 rotates, the blade 28 and the liquid dispersing edge 215 transmit the oil upward, so that the oil drips from the upper end of the inside of the box shell 11, which can ensure that the driven gear 112, the driving gear 113 and the transfer gear 115 can be left with oil to avoid gear damage. When the oil needs to be replenished, the oil is injected into the box shell 11 by the oil inlet nozzle 17 to avoid gear damage caused by long-term lack of oil. The remaining amount of oil and the position of the liquid regulating block 27 can be observed through the transparent plate 19. When the buoyancy is insufficient, the oil inside the box shell 11 needs to be taken out, and after the side sealing plate 16 is opened, the gas is injected into the empty groove 212 by the gas injection nozzle 211 to ensure that the liquid regulating block 27 can float to a suitable position when the oil is sufficient.

[0039] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. 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. A telescopic electric cylinder speed change structure that is easy to adjust, including a gear box mechanism, characterized in that: The gear box mechanism comprises a box shell, a driven shaft and a driving shaft are respectively arranged on both sides of the box shell, a driven gear is fixedly connected to the outer surface of the driven shaft, a liquid regulating structure is arranged inside the box shell, the liquid regulating structure comprises a mounting seat, the mounting seat is mounted on the lower end of the box shell, a bearing is mounted inside the mounting seat, an attachment shaft is mounted on the inner ring surface of the bearing, an attachment gear is fixedly connected to the lower middle part of the outer surface of the attachment shaft, the attachment gear is meshed with the driven gear, a liquid regulating block is arranged on the outer surface of the attachment shaft, a blade is fixedly connected to the outer surface of the liquid regulating block, a liquid dispersing edge is fixedly connected to the outer edge of one side of the blade, and a side of the liquid dispersing edge close to the liquid regulating block is arranged as an inclined surface; An empty groove is provided in the upper middle part of the liquid regulating block, a sealing gasket is bonded and fixed to the upper end of the liquid regulating block, and an air injection nozzle is installed at the upper end of the sealing gasket; An inner push block is fixedly connected between the outer surface of the attachment shaft and the upper end of the attachment gear, and the upper end of the inner push block is designed in an arc shape; A matching block is fixedly connected to the lower middle part of the liquid regulating block, and the liquid regulating block is movably connected to the attachment shaft; A notch is formed at the upper end of the attachment gear, and a flexible magnetic sheet is fixedly connected inside the notch; A bottom groove is provided at the outer edge of the lower end of the liquid regulating block, and an iron sheet is fixedly connected to the interior of the bottom groove; When the oil level is low, the liquid regulating block is adsorbed by magnetic force to promote the connection between the inner push block and the matching block.

2. The adjustable telescopic electric cylinder speed change structure according to claim 1 is characterized in that: The upper end of the attachment shaft is rotatably connected with an end plate, and one end of the end plate is fixedly connected to the box shell.

3. The adjustable telescopic electric cylinder speed change structure according to claim 1 is characterized in that: A mounting groove is provided on one side of the box shell, a No. 1 through groove is provided in the middle of one side of the mounting groove, a pressure-sealing cover is clamped in the middle of the box shell, a transparent plate is provided on one side of the pressure-sealing cover, the transparent plate is clamped with the mounting groove, a No. 2 through groove is penetrated in the middle of the transparent plate, and the transparent plate is fixedly connected to the box shell by bolts.

4. The adjustable telescopic electric cylinder speed change structure according to claim 1 is characterized in that: The two sides of the upper end of the box shell are respectively fixedly connected with a telescopic cylinder mounting seat and a motor mounting seat, one side of the lower end of the box shell is fixedly connected with a limiting seat, the lower end of the limiting seat is fixedly connected with a connecting ear, the two ends of the driven shaft are respectively rotatably connected to the telescopic cylinder mounting seat and the limiting seat, and the upper end of the driving shaft is rotatably connected to the motor mounting seat.

5. The adjustable telescopic electric cylinder speed change structure according to claim 1 is characterized in that: The inner part of the box shell is rotatably connected to a central rotating shaft, the outer surface of the central rotating shaft is fixedly connected to a central rotating gear, the central rotating gear is used to mesh with a driving gear and a driven gear, one side of the box shell is fixedly connected to a side sealing plate, and an oil inlet nozzle is installed above the middle of the side sealing plate.

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