A self-lubricating worm gear screw lift

Abstract

The utility model discloses a self-lubricating worm screw lift, which relates to the technical field of worm screw lifts. It includes a supporting sleeve, a supporting plate, a housing, a worm wheel, a worm and a lifting screw. An oil storage tank is installed on the top of the housing. An oil outlet hole located above the worm wheel and the worm is provided between the housing and the oil storage tank. A conical groove is formed at one end of the oil outlet hole close to the inner cavity of the housing. A conical block is movably provided in the conical groove. The top of the conical block is fixedly connected to a lifting rod that movably passes through the oil outlet hole. The lifting rod is driven by a driving mechanism. In the self-lubricating worm screw lift, during the movement of the lifting rod driving the conical block to lift and lower, the blocked conical groove can be opened or closed so that the lubricating oil falls on the meshing part of the worm wheel and the worm to play a lubricating role.

Description

Technical Field

[0001] The utility model relates to the technical field of worm gear screw lifters, in particular to a self-lubricating worm gear screw lifter. Background Art

[0002] The worm gear screw lift is a basic lifting component that can accurately control and adjust the lifting or propulsion height according to a certain procedure. It can be driven directly by an electric motor or other power, or it can be driven manually. Because it has many functions such as lifting, lowering, propulsion with the help of auxiliary parts, flipping and various height position adjustment, it is widely used in various industries such as machinery, metallurgy, construction, chemical industry, medical treatment, culture and health.

[0003] Traditional worm gear lifts are divided into two types: screw motion and nut motion. The rotation of the worm drives the worm wheel to move, which in turn causes the screw to move. After the worm and worm wheel have been running for a period of time, lubricating oil needs to be added to their interior. However, sometimes the staff forgets or there is no lubricating oil, which will increase the wear of the worm, reduce efficiency, and shorten the service life of the worm. Utility Model Content

[0004] The utility model provides a self-lubricating worm screw lifter to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-lubricating worm gear screw lifter, comprising a supporting sleeve, the top of the supporting sleeve is fixedly connected with a supporting plate, the supporting plate is installed with a shell connected to the inner cavity of the supporting sleeve, the top inner wall of the shell is rotatably connected with two bearings arranged up and down, a worm wheel with a built-in nut is provided between the two bearings, the top inner wall of the shell is rotatably connected with a worm meshing with the worm wheel, the inner cavity of the supporting sleeve is liftably connected with a lifting screw threadedly connected with the nut and can pass through the shell, an oil storage tank is installed on the top of the shell, an oil outlet hole located above the worm wheel and the worm is provided between the shell and the oil storage tank, a conical groove is formed at one end of the oil outlet hole close to the inner cavity of the shell, a conical block is movably provided in the conical groove, the top of the conical block is fixedly connected with a lifting rod movably passing through the oil outlet hole, and the lifting rod is driven by a driving mechanism.

[0006] Furthermore, the driving mechanism includes an optical axis, a cam, a connecting rod and a movable rod, the end of the worm gear is fixedly connected to the optical axis rotatably connected to the outer shell, a cam is sleeved on the optical axis, the inner cavity of the oil storage tank is provided with a connecting rod connected to the lifting rod, the bottom end of the connecting rod is fixedly connected to the movable rod that movably passes through the outer shell and the oil storage tank, and the bottom end of the movable rod is fixedly connected to a resistance block that cooperates with the cam.

[0007] Furthermore, a sealing sleeve which is sleeved on the surface of the movable rod is fixedly connected to the top inner wall of the shell.

[0008] Furthermore, a sealing filler and an oil seal are provided inside the sealing sleeve.

[0009] Furthermore, an oil filling pipe is provided on the top of the oil storage tank.

[0010] Furthermore, a collecting box communicating with the inner cavity of the shell is fixedly connected to the bottom of the support plate.

[0011] Compared with the prior art, the utility model provides a self-lubricating worm gear screw lift, which has the following beneficial effects: the self-lubricating worm gear screw lift, by arranging oil outlet holes and conical grooves above the worm wheel and the worm, when the lifting rod drives the conical block to lift and lower, the blocked conical groove can be opened or closed so that the lubricating oil can fall on the meshing point of the worm wheel and the worm to play a lubricating role. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the planar structure of the utility model;

[0014] Figure 3 It is a side view structural schematic diagram of the utility model;

[0015] Figure 4 It is an enlarged schematic diagram of point A of the present utility model.

[0016] In the figure: 1. support sleeve; 2. support plate; 3. housing; 4. bearing; 5. worm gear; 6. worm; 7. lifting screw; 8. oil storage tank; 9. oil outlet hole; 10. conical groove; 11. conical block; 12. lifting rod; 13. connecting rod; 14. movable rod; 15. resistance block; 16. optical axis; 17. cam; 18. sealing sleeve; 19. collection box. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-4The utility model discloses a self-lubricating worm gear screw lifter, comprising a supporting sleeve 1, a supporting plate 2 is fixedly connected to the top of the supporting sleeve 1, a shell 3 connected to the inner cavity of the supporting sleeve 1 is installed on the supporting plate 2, the top inner wall of the shell 3 is rotatably connected to two bearings 4 arranged up and down, a worm wheel 5 with a built-in nut is arranged between the two bearings 4, the top inner wall of the shell 3 is rotatably connected to a worm 6 meshing with the worm wheel 5, the inner cavity of the supporting sleeve 1 is liftably connected to a lifting screw 7 threadedly connected to the nut and capable of passing through the shell 3, an oil storage tank 8 is installed on the top of the shell 3, an oil outlet 9 located above the worm wheel 5 and the worm 6 is arranged between the shell 3 and the oil storage tank 8, a conical groove 10 is formed on one end of the oil outlet 9 close to the inner cavity of the shell 3, a conical block 11 is movably arranged in the conical groove 10, the top of the conical block 11 is fixedly connected to a lifting rod 12 movably passing through the oil outlet hole 9, and the lifting rod 12 is driven by a driving mechanism.

[0019] Specifically, the driving mechanism includes an optical axis 16, a cam 17, a connecting rod 13 and a movable rod 14. The end of the worm gear 6 is fixedly connected to the optical axis 16 rotatably connected to the outer shell 3. The optical axis 16 is sleeved with a cam 17. The inner cavity of the oil storage tank 8 is provided with a connecting rod 13 connected to the lifting rod 12. The bottom end of the connecting rod 13 is fixedly connected to the movable rod 14 that movably penetrates the outer shell 3 and the oil storage tank 8. The bottom end of the movable rod 14 is fixedly connected to the interference block 15 that cooperates with the cam 17.

[0020] In this embodiment, a spring is provided between the top of the resistance block 15 and the top inner wall of the outer shell 3 and is sleeved on the outside of the movable rod 14. During the rotation of the worm 6, the optical axis 16 rotates synchronously. At this time, the cam 17 rotates and will resist the resistance block 15, so that the resistance block 15 can drive the movable rod 14 and the connecting rod 13 to move up and down reciprocatingly, and then the lifting rod 12 drives the conical block 11 to move back and forth, so that the conical groove 10 is continuously opened or blocked to lubricate the worm wheel 5 and the worm 6.

[0021] Specifically, a sealing sleeve 18 sleeved on the surface of the movable rod 14 is fixedly connected to the top inner wall of the housing 3 .

[0022] The sealing sleeve 18 is provided with sealing filler and oil seal inside.

[0023] In this embodiment, the sealing sleeve 18 is provided to seal the connection between the movable rod 14 and the housing 3 to prevent the lubricating oil in the oil storage tank 8 from leaking.

[0024] Specifically, an oil filling pipe is provided on the top of the oil storage tank 8.

[0025] In this embodiment, a liquid level sensor may be provided in the inner cavity of the oil storage tank 8 , and an alarm may be provided on the support plate 2 , which is connected to the liquid level sensor through a controller, so as to remind the oil storage situation in the oil storage tank 8 .

[0026] Specifically, a collecting box 19 communicating with the inner cavity of the outer shell 3 is fixedly connected to the bottom of the support plate 2 .

[0027] In this embodiment, the collection box 19 is used to collect excess lubricating oil in the inner cavity of the housing 3 .

[0028] The bottom of the collecting box 19 is provided with an oil drain pipe blocked by a plug.

[0029] In summary, the self-lubricating worm gear screw lifter is configured with an oil outlet hole 9 and a conical groove 10 above the worm wheel 5 and the worm 6. When the lifting rod 12 drives the conical block 11 to move up and down, the blocked conical groove 10 can be opened or closed so that the lubricating oil falls on the meshing part of the worm wheel 5 and the worm 6 to play a lubricating role.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-lubricating worm screw jack, comprising a support sleeve (1), characterized in that: The top of the support sleeve (1) is fixedly connected to a support plate (2), and a shell (3) connected to the inner cavity of the support sleeve (1) is installed on the support plate (2). Two bearings (4) arranged up and down are rotatably connected to the top inner wall of the shell (3), and a worm wheel (5) with a built-in nut is arranged between the two bearings (4). The top inner wall of the shell (3) is rotatably connected to a worm (6) meshing with the worm wheel (5). The inner cavity of the support sleeve (1) is movably connected to a nut threadedly connected to the nut and capable of passing through the shell (3). ) of the lifting screw (7), an oil storage tank (8) is installed on the top of the housing (3), an oil outlet hole (9) located above the worm wheel (5) and the worm (6) is provided between the housing (3) and the oil storage tank (8), a conical groove (10) is formed at one end of the oil outlet hole (9) close to the inner cavity of the housing (3), a conical block (11) is movably provided in the conical groove (10), the top end of the conical block (11) is fixedly connected to a lifting rod (12) movably passing through the oil outlet hole (9), and the lifting rod (12) is driven by a driving mechanism.

2. A self-lubricating worm gear screw lift according to claim 1, characterized in that: The driving mechanism comprises an optical axis (16), a cam (17), a connecting rod (13) and a movable rod (14); the end of the worm gear (6) is fixedly connected to the optical axis (16) which is rotatably connected to the outer shell (3); the cam (17) is sleeved on the optical axis (16); the inner cavity of the oil storage tank (8) is provided with a connecting rod (13) which is connected to the lifting rod (12); the bottom end of the connecting rod (13) is fixedly connected to the movable rod (14) which movably penetrates the outer shell (3) and the oil storage tank (8); the bottom end of the movable rod (14) is fixedly connected to a contact block (15) which cooperates with the cam (17).

3. The self-lubricating worm gear screw lift according to claim 1, characterized in that: A sealing sleeve (18) sleeved on the surface of the movable rod (14) is fixedly connected to the top inner wall of the outer shell (3).

4. A self-lubricating worm gear screw lift according to claim 3, characterized in that: The sealing sleeve (18) is provided with sealing filler and oil seal inside.

5. The self-lubricating worm gear screw lift according to claim 1, characterized in that: An oil filling pipe is provided on the top of the oil storage tank (8).

6. The self-lubricating worm gear screw lift according to claim 1, characterized in that: The bottom of the support plate (2) is fixedly connected to a collecting box (19) which is in communication with the inner cavity of the outer shell (3).

Images