CN117208801A

CN117208801A - Worm wheel screw rod lifter

Info

Publication number: CN117208801A
Application number: CN202311140314.7A
Authority: CN
Inventors: 戎艳琼; 戎传苗
Original assignee: Hangzhou Rongshifu Transmission Technology Co ltd
Current assignee: Hangzhou Rongshifu Transmission Technology Co ltd
Priority date: 2023-09-06
Filing date: 2023-09-06
Publication date: 2023-12-12

Abstract

The invention discloses a worm gear screw rod lifter in the technical field of screw rod lifters, which comprises a protective cylinder, wherein a connecting slideway is uniformly arranged in the protective cylinder, an auxiliary ring is rotationally connected with an outer ring at the bottom end of the screw rod, a sliding rod is fixedly connected with an outer ring of the auxiliary ring, a plurality of mounting grooves are uniformly circumferentially arranged in the auxiliary ring, double-headed cams are rotationally connected in the mounting grooves through torsion spring shafts, wedge-shaped blocks are slidingly connected to the upper side and the lower side of each mounting groove, a plurality of safety blocks are uniformly and slidingly connected with the outer ring of the auxiliary ring, a limiting rod is fixedly connected to the outer side surface of each double-headed cam, a semicircular groove is formed in the inner side wall of each mounting groove, a release gear is fixedly connected to the outer wall of each torsion spring shaft, a damping gear ring is arranged at the bottom of the screw rod, positioning columns are elastically connected to the inner parts of the two ends of each double-headed cam, and accommodating holes are formed in the two sides of each mounting groove.

Description

Worm wheel screw rod lifter

Technical Field

The invention relates to the technical field of screw rod lifters, in particular to a worm wheel screw rod lifter.

Background

The lifter is used as an efficient jacking device and is widely applied to the fields of coal mines, bridges, vehicles, aviation and the like. The main structural types of small elevators widely used in the market at present are scissor lifts, telescopic cylinder lifts, mast lifts and screw lifts. The lifting mechanisms have the telescopic characteristic, so that the volume of the equipment can be effectively reduced to carry out lifting operation in a small space.

The screw rod lifter forms a sliding screw pair through the screw rod and the nut, limits the rotation freedom degree of the nut, and drives the nut to realize axial lifting movement by means of rotation of the screw rod. In the existing industrial production process, weights are often lifted, although the screw rod lifter is simple in structure and rapid in lifting, a single screw rod is adopted, in the prior art, the screw rod is controlled to be high through the valve body or the lifter and the screw rod in a self-locking mode, and due to the fact that the weights are lifted repeatedly and frequently or the heights reach relatively accurate heights when the production environment is relatively large, abrasion of the screw rod or loss of the valve body and the lifter can be accelerated due to repeated frequent starting of equipment under the condition, faults or failure of the equipment or parts can be caused, accidents such as active falling of the lifting screw rod can occur, at present, the screw rod lifter is not provided with anti-falling components, equipment reliability and safety are greatly reduced, and normal production is not favored.

Based on the above, the present invention has devised a worm wheel screw lifter to solve the above-mentioned problems.

Disclosure of Invention

The present invention is directed to a worm gear screw lifter to solve the above-mentioned problems.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the utility model provides a worm wheel lead screw lift, includes turbine, lead screw and a section of thick bamboo of protecting, the lead screw is located a section of thick bamboo of protecting, protect the section of thick bamboo to connect in turbine bottom, the inside connection slide that has evenly been seted up of section of thick bamboo, lead screw bottom outer lane rotates and is connected with the auxiliary ring, auxiliary ring outer lane fixedly connected with slide bar, the slide bar is located the two sliding fit of connection slide, a plurality of mounting grooves have evenly been seted up to auxiliary ring circumference, all be connected with double-end cam through torsional spring shaft rotation in the mounting groove, the equal sliding connection of both sides has the wedge about the mounting groove, the even sliding connection of auxiliary ring outer lane has a plurality of safety blocks, the safety block is located the wedge of both sides about the mounting groove with the mounting groove one-to-one and is located the mounting groove, double-end cam lateral surface fixedly connected with restriction pole, the semicircle groove has been seted up to the mounting groove, the inside wall is located the two sliding fit of semicircle groove, the release gear is located tooth ring side and all with the interior connection of torsional spring shaft outer wall fixedly connected with release gear, the lead screw bottom is located the annular gear and all is located the side-by-tooth cam, the equal sliding connection has the wedge to be used for holding down the magnet, the equal suction magnet is located in the both sides of the side of the magnet and is equipped with the absorption column, the equal suction magnet and is located in the equal suction magnet and is equipped with the equal to be used for holding and is located in the both sides.

Preferably, the guide posts are fixedly connected to the upper side and the lower side of the mounting groove, the guide holes are formed in the wedge-shaped blocks, the guide posts are located in the guide holes in a sliding fit mode, the safety holes are formed in one side of the mounting groove, the connecting posts are fixedly connected to the inner side of the safety block, and the connecting posts are located in the safety holes in a sliding fit mode.

Preferably, a spherical slideway is arranged in the middle of the outer edge of the double-head cam, ball shafts are fixedly connected to the inner sides of wedge blocks on the upper side and the lower side of the mounting groove, and the ball shafts are positioned in the spherical slideway and are in sliding fit with the spherical slideway.

Preferably, the damping gear ring comprises a foundation ring fixedly connected to the bottom of the screw rod, the top of the foundation ring is slidably connected with a damping ring, the foundation ring is rotationally connected with a top gear ring, the top gear ring is positioned above the damping ring, the bottom of the top gear ring and the top of the damping ring are fixedly connected with matched circular teeth and engaged with the matched circular teeth of the two, and an engaged spring is arranged between the foundation ring and the damping ring.

Preferably, the lubrication ring is installed to the protection cylinder outer lane, sliding connection has the extrusion circle in the lubrication ring, be connected with folding sealing piece between slide bar top and the connection slide, the inflation hole with the extrusion circle below intercommunication of lubrication ring is seted up on the connection slide top, the lubrication ring be located the lateral wall of extrusion circle top seted up with the oil hole that crosses of the inside intercommunication of protection cylinder, protection cylinder internally connected has the wiping ring, the wiping ring pastes with crossing the oil hole export mutually, the wiping ring is located the lead screw outer lane.

Preferably, the lubrication ring bottom is provided with a one-way taper hole, a sealing ball is arranged in the one-way taper hole, an adjusting hole communicated with the outside is further formed in the middle of the connecting slideway, the adjusting hole is positioned below the air charging hole, the inner ring of the protection cylinder is connected with a C-shaped ring, the wiping ring is arranged in the C-shaped ring, and the wiping ring is a sponge ring.

Preferably, the casing top rotation of turbine is connected with the cleaning ring, the cleaning ring is sleeved outside the lead screw, the casing top sliding connection of turbine has the cleaning rod, the cleaning rod is located the cleaning ring inboard, cleaning ring inner circle fixedly connected with gradually the lug, the friction wheel is connected in the casing top rotation of turbine, the friction wheel is located between cleaning ring and the lead screw and all laminates with two outer walls, the lead screw rotates drive friction wheel rotation and then drives the cleaning ring and rotate.

Preferably, the casing top fixedly connected with mounting bracket of turbine, cleaning rod end fixedly connected with brush and middle part are equipped with logical window, the mounting bracket passes the two sliding fit of logical window, fixedly connected with cleans the spring between mounting bracket and the logical window, the friction wheel passes through the unilateral axle rotation and connects at the casing top of turbine.

Compared with the prior art, the invention has the beneficial effects that:

when the turbine is in use, the turbine drives the screw rod to ascend or descend to realize the lifting of a connecting object, and when the lifting height is unchanged in an initial or turbine stopping state, the safety blocks at the lower end of the screw rod are tightly attached to and extruded on the inner wall of the protective cylinder, the screw rod is positioned and reinforced on the basis of stopping relative to the turbine by the extrusion and friction force of the safety blocks and the protective cylinder, the screw rod is limited and protected by the cooperation of the safety blocks and the protective cylinder when the turbine cannot keep the screw rod stationary under unexpected conditions, the screw rod cannot slide down freely, and therefore the occurrence of the free falling of objects with certain height and the like is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall front side plan view of the present invention;

FIG. 2 is a schematic side plan view of the internal structure of the present invention;

FIG. 3 is an enlarged schematic view of the portion A of the present invention;

FIG. 4 is a schematic view in half cross section and half cross section from the side view of the internal structure of the present invention;

FIG. 5 is an enlarged view of the structure of the portion B of the present invention;

FIG. 6 is a schematic view of an enlarged semi-sectional structure of an auxiliary ring according to the present invention;

FIG. 7 is an enlarged view of the structure of the portion C of the present invention;

FIG. 8 is a schematic view of the present invention in a semi-sectional internal view;

FIG. 9 is an enlarged view of the structure of the portion D of the present invention;

FIG. 10 is a schematic view of the overall structure of the present invention in half cross section from an oblique side view;

FIG. 11 is a schematic view in half section of the overall structure of the present invention;

FIG. 12 is a schematic view showing the bottom view of the internal structure of the present invention;

FIG. 13 is an enlarged view of the E part of the present invention;

FIG. 14 is a schematic top plan view of a turbine housing of the present invention;

FIG. 15 is a schematic view of the overall side view semi-section structure of the present invention;

fig. 16 is an enlarged schematic view of the F part of the present invention.

In the drawings, the list of components represented by the various numbers is as follows:

1. a turbine; 2. a screw rod; 3. a protective barrel; 4. the connecting slide way; 5. an auxiliary ring; 6. a slide bar; 7. a mounting groove; 8. a torsion spring shaft; 9. a double-headed cam; 10. wedge blocks; 11. a safety block; 12. a restraining bar; 13. a semicircular arc groove; 14. releasing the gear; 15. damping the gear ring; 16. positioning columns; 17. a receiving hole; 18. attaching an electromagnet; 19. an adsorption electromagnet; 20. a guide post; 21. a guide hole; 22. a safety hole; 23. a connecting column; 24. a spherical slideway; 25. a ball head shaft; 26. a foundation ring; 27. a damping ring; 28. a top ring gear; 29. matching with the round teeth; 30. an engagement spring; 31. a lubrication ring; 32. a pressing ring; 33. folding the sealing sheet; 34. an air filling hole; 35. an oil passing hole; 36. a wiping ring; 37. a unidirectional taper hole; 38. a sealing ball; 39. an adjustment aperture; 40. c-shaped ring; 41. a cleaning ring; 42. a cleaning rod; 43. a gradual tab; 44. a friction wheel; 45. a mounting frame; 46. a brush; 47. window opening; 48. cleaning springs.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-16, the present invention provides a technical solution:

the worm wheel screw rod lifter comprises a turbine 1, a screw rod 2 and a protective cylinder 3, wherein the screw rod 2 is positioned in the protective cylinder 3, the protective cylinder 3 is connected to the bottom of the turbine 1, a connecting slideway 4 is uniformly arranged in the protective cylinder 3, an outer ring at the bottom end of the screw rod 2 is rotationally connected with an auxiliary ring 5, the outer ring of the auxiliary ring 5 is fixedly connected with a sliding rod 6, the sliding rod 6 is positioned in the connecting slideway 4 and is in sliding fit with the two, a plurality of mounting grooves 7 are uniformly formed in the circumferential direction of the auxiliary ring 5, double-headed cams 9 are rotationally connected in the mounting grooves 7 through torsion spring shafts 8, wedge-shaped blocks 10 are slidingly connected to the upper side and the lower side of the mounting grooves 7, a plurality of safety blocks 11 are uniformly and slidingly connected with the outer ring of the auxiliary ring 5, the safety blocks 11 are in one-to-one correspondence with the mounting grooves 7 and are positioned on the outer side of the mounting grooves 7, the double-headed cams 9 are positioned in the middle of the wedge-shaped blocks 10 at the upper side and the lower side of the mounting grooves 7, the limiting rod 12 is fixedly connected to the outer side face of the double-headed cam 9, the semicircular arc groove 13 is formed in the inner side wall of the mounting groove 7, the limiting rod 12 is located in the semicircular arc groove 13 and is in sliding fit with the semicircular arc groove 13, the release gear 14 is fixedly connected to the outer wall of the torsion spring shaft 8, the damping gear ring 15 is mounted at the bottom of the screw rod 2, the release gear 14 is located above the damping gear ring 15 and is meshed with the damping gear ring 15, the positioning columns 16 are elastically connected to the inner portions of the two ends of the double-headed cam 9, the accommodating holes 17 are formed in the two sides of the mounting groove 7, the auxiliary ring 5 is located on the periphery of the mounting groove 7, the attaching electromagnet 18 and the adsorbing electromagnet 19 are respectively mounted, the wedge blocks 10 on the upper side and the lower side of the attaching electromagnet 18 are used for adsorbing the mounting groove 7 are close to each other, and the adsorbing electromagnet 19 is used for adsorbing and pulling out the positioning columns 16.

Referring to fig. 1-8, 15-16, in the use of the present invention, the turbine 1 drives the screw rod 2 to rise or fall to realize lifting of a connecting object, and when the lifting height is unchanged in the initial or stopped state of the turbine 1, a plurality of safety blocks 11 at the lower end of the screw rod 2 are tightly attached to and pressed on the inner wall of the protective cylinder 3, the screw rod 2 is positioned and reinforced on the basis of stopping relatively to the turbine 1 by the pressing and friction force of the safety blocks 11 and the protective cylinder 3, so that the screw rod 2 is prevented from being limited and protected by the cooperation of the safety blocks 11 and the protective cylinder 3 when the turbine 1 cannot keep the screw rod 2 stationary, and cannot slide freely, thereby preventing the occurrence of free falling of objects with a certain height, etc., and the specific principle is as follows:

referring to fig. 3, 5, 7 and 9, when the height needs to be changed, the attaching electromagnet 18 and the absorbing electromagnet 19 are disconnected, the turbine 1 drives the screw rod 2 to rotate to achieve lifting, the lower damping gear ring 15 is driven to rotate together when the screw rod 2 rotates, the damping gear ring 15 drives all the release gears 14 meshed with the upper damping gear ring to rotate, the elasticity of the torsion spring shaft 8 is overcome to drive the torsion spring shaft 8 to rotate, the double-headed cam 9 rotates from a straight state to a vertical state, in the process, the wedge blocks 10 on the upper side and the lower side of the double-headed cam are jacked up, the wedge blocks 10 are far away from the safety blocks 11, so that the safety blocks 11 can retreat and further leave the protective cylinder 3, the safety limit is released, the screw rod 2 can smoothly move up and down, and as the damping gear ring 15 drives the release gears 14 with small diameters to rotate, the response speed of the release gears 14 is high, and the screw rod 2 can release the safety limit as long as the safety blocks 11 leave a little; when the screw rod 2 continuously rotates, because the limiting rod 12 of the double-headed cam 9 is positioned in the semicircular arc groove 13, when the double-headed cam 9 rotates to the vertical state, the limiting rod 12 just reaches the end part of the semicircular arc groove 13, so that the double-headed cam 9 cannot continuously rotate, the release gear 14 cannot rotate at the moment, the damping gear ring 15 and the release gear 14 are relatively static and relatively rotate with the screw rod 2, the screw rod 2 can continuously rotate, the double-headed cam 9 is ensured to stay in the vertical state, the wedge blocks 10 on the upper side and the lower side are kept in a far away state, the safety block 11 does not rub with the pile casing 3, the continuous rotation of the screw rod 2 is not influenced, and the screw rod 2 can be lifted in a sliding manner.

When the screw rod 2 stops at a required height, the attaching electromagnet 18 and the adsorbing electromagnet 19 are electrified to generate magnetic force, the attaching electromagnet 18 is used for automatically closing the wedge-shaped blocks 10 on the upper side and the lower side and the elastic restoring force of the torsion spring shaft 8, the torsion spring shaft 8 rotates the wedge-shaped blocks 10 to be automatically close to the attaching, the safety block 11 is gradually extruded outwards in the process to be ejected out to attach the protection cylinder 3, when the torsion spring shaft 8 rotates to restore to the original position, the double-headed cam 9 just rotates to be in a straight state, two tips face the two side walls of the mounting groove 7, the positioning column 16 inside the double-headed cam 9 is pulled out to enter the accommodating hole 17 under the action of the adsorbing electromagnet 19, so that the double-headed cam 9 is limited to be prevented from automatically rotating to keep in a straight state, the safety block 11 is kept in a state of being contacted with the protection cylinder 3 to extend, the safety limit is realized, the safety limit is started immediately when the screw rod 2 stops, manual operation is not needed, forgetting is avoided, and the safety is greatly improved.

The on-off of the attaching electromagnet 18 and the absorbing electromagnet 19 can be started through the state that the sensor follows the screw rod 2, when the screw rod 2 is not moved, the attaching electromagnet 18 and the absorbing electromagnet 19 are started, when the screw rod 2 needs to rotate, the attaching electromagnet 18 and the absorbing electromagnet 19 are disconnected firstly, the power supply of the sensor, the attaching electromagnet 18 and the absorbing electromagnet 19 can be supplied through a separate UPS, and the safety limit can still be effectively started when emergency such as power failure is guaranteed.

Referring to fig. 15 and 16, the upper and lower sides of the installation groove 7 are fixedly connected with guide posts 20, the inside of the wedge-shaped block 10 is provided with guide holes 21, the guide posts 20 are located in the guide holes 21 and are in sliding fit with each other, one side of the installation groove 7 is provided with a safety hole 22, the inner side of the safety block 11 is fixedly connected with a connecting post 23, and the connecting post 23 is located in the safety hole 22 and is in sliding fit with the safety hole 22.

Referring to fig. 4 and 5, a spherical slideway 24 is provided in the middle of the outer edge of the double-headed cam 9, and ball shafts 25 are fixedly connected to the inner sides of the wedge blocks 10 on the upper and lower sides of the mounting groove 7, and the ball shafts 25 are located in the spherical slideway 24 and are in sliding fit with each other.

Through the cooperation of bulb axle 25 and spherical slide 24 when double-end cam 9 rotates for double-end cam 9 can be compulsorily drive wedge 10 reciprocate, and the reciprocating of wedge 10 also can force extrusion double-end cam 9 makes its rotation, can reliably bring back wedge 10 to outwards extrude safety block 11, also can overcome damping ring gear 15's power through the double effort of magnetism with the torsional spring when the magnetism is inhaled the start-up, makes release gear 14 can reverse rotation, and damping ring gear 15 is pushed down, guarantees steady operation.

Referring to fig. 4, 5, 12 and 13, the damping gear ring 15 includes a base ring 26 fixedly connected to the bottom of the screw rod 2, a damping ring 27 is slidably connected to the top of the base ring 26, a top gear ring 28 is rotatably connected to the base ring 26, the top gear ring 28 is located above the damping ring 27, mating round teeth 29 are fixedly connected to the bottom of the top gear ring 28 and the top of the damping ring 27, the mating round teeth 29 are engaged, and an engagement spring 30 is installed between the base ring 26 and the damping ring 27.

When the double-headed cam 9 is in a vertical state, the limiting rod 12 is positioned at the extreme end of the semicircular arc groove 13, and the screw rod 2 continues to rotate, at the moment, the torsion spring shaft 8 and the release gear 14 cannot be rotated, the screw rod 2 continues to rotate and can continue to drive the base ring 26 to rotate, at the moment, the base ring 26 rotates, the top gear ring 28 does not rotate, the damping ring 27 and the top gear ring 28 relatively rotate against the friction force between the matched circular teeth 29 under the continuous rotation of the screw rod 2, and the damping ring 27 is pressed down, so that the top gear ring 28 does not rotate and the base ring 26 still can rotate, and the state that the screw rod 2 needs to continue to rotate and the torsion spring shaft 8 does not need to rotate is adapted;

when the screw rod 2 stops and the double-headed cam 9 needs to return to a straight state from a vertical state, the torsion spring shaft 8 and the release gear 14 are required to rotate, the screw rod 2 does not rotate at the moment, the friction force between the damping ring 27 and the top gear ring 28, which overcomes the matched circular teeth 29, is overcome under the action of the elasticity of the torsion spring shaft 8 and the magnetic force of the lamination electromagnet 18, so that the top gear ring 28 rotates, the base ring 26 does not rotate, and the rotary return of the torsion spring shaft 8 is adapted;

because the magnetic attraction force is added during the recovery, the cooperation of the magnetic attraction force and the elastic force of the torsion spring shaft 8 is larger than the damping of the damping gear ring 15, and the elastic force of the torsion spring shaft 8 is smaller than the damping of the damping gear ring 15, the screw rod 2 can rotate and the double-headed cam 9 can keep a vertical state, and the screw rod 2 can recover the original state without moving the double-headed cam 9.

Referring to fig. 8-11, a lubrication ring 31 is installed on an outer ring of the casing 3, an extrusion ring 32 is slidably connected in the lubrication ring 31, a folding sealing piece 33 is connected between the upper side of the sliding rod 6 and the connecting sliding rail 4, an air charging hole 34 communicated with the lower side of the extrusion ring 32 of the lubrication ring 31 is formed in the top end of the connecting sliding rail 4, an oil passing hole 35 communicated with the inside of the casing 3 is formed in the side wall of the lubrication ring 31 above the extrusion ring 32, a wiping ring 36 is connected in the casing 3, the wiping ring 36 is attached to an outlet of the oil passing hole 35, and the wiping ring 36 is located on an outer ring of the screw rod 2.

Wherein, the bottom of the lubrication ring 31 is provided with a one-way taper hole 37, a sealing ball 38 is arranged in the one-way taper hole 37, an adjusting hole 39 communicated with the outside is also arranged in the middle of the connecting slideway 4, the adjusting hole 39 is positioned below the air charging hole 34, the inner ring of the protection cylinder 3 is connected with a C-shaped ring 40, a wiping ring 36 is arranged in the C-shaped ring 40, and the wiping ring 36 is a sponge ring.

In order to facilitate daily maintenance, the auxiliary ring 5 is driven to rise together in the rising process of the screw rod 2, meanwhile, the sliding rod 6 slides upwards along the connecting slide rail 4, in the rising process, air in a sealing space between the sliding rod 6 and the connecting slide rail 4 and the folding sealing piece 33 is continuously extruded into a space below the extruding ring 32 of the lubricating ring 31 through the air charging holes 34, so that the extruding ring 32 is caused to slightly move upwards, and pre-filled lubricating oil above the extruding ring 32 is extruded from the oil passing holes 35, so that the lubricating oil is adsorbed by the wiping ring 36 and then is wiped on the screw rod 2, and the daily lubrication maintenance is automatically carried out in the use process, thereby being beneficial to the stable long-term operation of equipment.

When the screw rod 2 descends, the sliding rod 6 moves downwards along the connecting slide way 4, the sealing space between the sliding rod 6 and the connecting slide way 4 and the folding sealing piece 33 is continuously enlarged, at the moment, the sealing ball 38 in the one-way taper hole 37 floats upwards and is communicated with the outside, and the outside air enters the space above the sliding rod 6 and the connecting slide way 4, so that the sliding rod 6 can move downwards freely without being influenced by the extrusion ring 32.

The sponge ring can store and adsorb lubricating oil, and the lubricating oil extruded when the screw rod 2 ascends can keep the sponge ring moist, so that the maintenance effect is ensured; the position of the adjusting hole 39 can be set at a proper height according to maintenance requirements and use situations, the slide bar 6 starts to squeeze lubricating oil only when reaching the height above the adjusting hole 39, namely, oil is discharged when the screw rod 2 is lifted to a certain height, and a proper oil discharging frequency can be selected according to the height frequency of the screw rod 2.

Referring to fig. 1 and 14, a cleaning ring 41 is rotatably connected above a casing of the turbine 1, the cleaning ring 41 is sleeved outside the screw rod 2, a cleaning rod 42 is slidably connected above the casing of the turbine 1, the cleaning rod 42 is located inside the cleaning ring 41, a gradually protruding piece 43 is fixedly connected with an inner ring of the cleaning ring 41, a friction wheel 44 is rotatably connected to the top of the casing of the turbine 1, the friction wheel 44 is located between the cleaning ring 41 and the screw rod 2 and is attached to the outer wall of the cleaning ring 41, and the screw rod 2 rotates to drive the friction wheel 44 to rotate so as to drive the cleaning ring 41 to rotate.

Wherein, turbine 1's casing top fixedly connected with mounting bracket 45, cleaning rod 42 end fixedly connected with brush 46 and middle part are equipped with logical window 47, and mounting bracket 45 passes the two sliding fit of logical window 47, fixedly connected with cleaning spring 48 between mounting bracket 45 and the logical window 47, and friction wheel 44 passes through the unilateral axle rotation and connects at turbine 1's casing top.

When the screw rod 2 rises, the rod body exposed outside can be more easily stained with dust and fragments and the like, and part of dust and fragments can be carried when the screw rod 2 is recovered in a descending manner, so that the cooperation of the turbine 1 and the screw rod 2 can be influenced, the friction wheel 44 is driven to rotate through friction force when the screw rod 2 rotates to recover and descend, the cleaning ring 41 is driven to rotate, the cleaning ring 41 rotates to enable the gradually protruding piece 43 to gradually enter the rear of the cleaning rod 42 and extrude the gradually protruding piece to the direction of the screw rod 2, when the gradually protruding piece 43 rotates to the position that the cleaning rod 42 is completely extended, the hairbrush 46 is contacted with the screw rod 2 and can clean the surface spiral, impurities stained on the surface are swept in the rotating process, and the sticky impurities can be collected at the upper end of the screw rod 2 when recovered, so that the influence is small and the subsequent cleaning is convenient.

When the screw rod 2 does not rotate, the cleaning spring 48 pushes the cleaning rod 42 back, so that the cleaning ring 41 reversely rotates to return to the original position, and the next cleaning is convenient; when the screw rod 2 ascends, the direction of rotation of the screw rod 2 is opposite to that of the screw rod 2 when the screw rod 2 descends, and when the screw rod 2 ascends, the friction wheel 44 is unidirectionally rotated and can only be driven by the screw rod 2 during descending, so that the friction wheel 44 slides between the friction wheel 44 and the screw rod 2 at the moment, the friction wheel 44 cannot rotate, the hairbrush 46 cannot be close to the screw rod 2, the hairbrush cannot be cleaned when the screw rod 2 ascends, and the accumulated direction of impurities is controlled only when the screw rod 2 descends, so that the downward accumulation of the impurities is avoided.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims

1. The utility model provides a worm wheel lead screw lift, includes turbine (1), lead screw (2) and protects a section of thick bamboo (3), lead screw (2) are located and protect a section of thick bamboo (3), protect a section of thick bamboo (3) to connect in turbine (1) bottom, its characterized in that: the utility model is characterized in that a connecting slide way (4) is evenly arranged in the pile casing (3), an auxiliary ring (5) is rotationally connected with the outer ring at the bottom end of the screw rod (2), a slide bar (6) is fixedly connected with the outer ring of the auxiliary ring (5), the slide bar (6) is positioned in the connecting slide way (4) and is in sliding fit with the connecting slide way, a plurality of mounting grooves (7) are evenly arranged in the circumference of the auxiliary ring (5), double-headed cams (9) are rotationally connected in the mounting grooves (7) through torsion spring shafts (8), wedge-shaped blocks (10) are slidingly connected with the upper side and the lower side of the mounting grooves (7), a plurality of safety blocks (11) are evenly and slidingly connected with the outer ring of the auxiliary ring (5), the safety blocks (11) are in one-to-one correspondence with the mounting grooves (7) and are positioned on the outer sides of the mounting grooves (7), the double-headed cams (9) are positioned in the middle of wedge-shaped blocks (10) on the upper side and the lower side of the mounting grooves (7), limiting rods (12) are fixedly connected to the outer side faces of the double-headed cams (9), semicircular arc grooves (13) are formed in the inner side walls of the mounting grooves (7), the limiting rods (12) are positioned in the semicircular arc grooves (13) in sliding fit, release gears (14) are fixedly connected to the outer walls of the torsion spring shafts (8), damping gear rings (15) are arranged at the bottoms of the screw rods (2), the release gear (14) is located damping ring gear (15) top and all meshes with damping ring gear (15), inside all elastic connection in double-end cam (9) both ends has reference column (16), holding hole (17) have all been seted up to mounting groove (7) both sides, auxiliary ring (5) are located the periphery of mounting groove (7) and do not install laminating electro-magnet (18) and absorption electro-magnet (19) respectively, laminating electro-magnet (18) are used for adsorbing wedge (10) each other being close to of both sides about mounting groove (7), absorption electro-magnet (19) are used for adsorbing reference column (16) and pull out.

2. The worm gear lead screw elevator as recited in claim 1, wherein: the utility model discloses a safety device for the automobile, including installation groove (7), wedge (10), connecting column (23), guiding column (20) are all fixedly connected with in both sides about installation groove (7), guiding hole (21) have all been seted up to wedge (10) inside, guiding column (20) are located two sliding fit in guiding hole (21), safety hole (22) have been seted up to installation groove (7) one side, inboard fixedly connected with spliced pole (23) of safety block (11), spliced pole (23) are located two sliding fit in safety hole (22).

3. The worm gear lead screw elevator as recited in claim 1, wherein: spherical slide ways (24) are arranged in the middle of the outer edge of the double-head cam (9), ball shafts (25) are fixedly connected to the inner sides of wedge blocks (10) on the upper side and the lower side of the mounting groove (7), and the ball shafts (25) are located in the spherical slide ways (24) in sliding fit.

4. The worm gear lead screw elevator as recited in claim 1, wherein: the damping gear ring (15) comprises a foundation ring (26) fixedly connected to the bottom of the screw rod (2), a damping ring (27) is slidably connected to the top of the foundation ring (26), a top gear ring (28) is rotatably connected to the foundation ring (26), the top gear ring (28) is located above the damping ring (27), matched circular teeth (29) are fixedly connected to the bottom of the top gear ring (28) and the top of the damping ring (27), the matched circular teeth (29) are meshed, and a meshing spring (30) is installed between the foundation ring (26) and the damping ring (27).

5. The worm gear lead screw elevator as recited in claim 1, wherein: the novel screw rod is characterized in that a lubrication ring (31) is mounted on the outer ring of the protection cylinder (3), an extrusion ring (32) is connected in the lubrication ring (31) in a sliding manner, a folding sealing piece (33) is connected between the upper portion of the sliding rod (6) and the connecting slide way (4), an inflation hole (34) communicated with the lower portion of the extrusion ring (32) of the lubrication ring (31) is formed in the top end of the connecting slide way (4), an oil passing hole (35) communicated with the inner portion of the protection cylinder (3) is formed in the side wall of the lubrication ring (31) above the extrusion ring (32), a wiping ring (36) is connected with an outlet of the oil passing hole (35), and the wiping ring (36) is located on the outer ring of the screw rod (2).

6. The worm gear lead screw elevator as recited in claim 5, wherein: the lubricating ring is characterized in that a one-way taper hole (37) is formed in the bottom of the lubricating ring (31), a sealing ball (38) is arranged in the one-way taper hole (37), an adjusting hole (39) communicated with the outside is formed in the middle of the connecting slide way (4), the adjusting hole (39) is located below the air charging hole (34), a C-shaped ring (40) is connected with the inner ring of the protective cylinder (3), the wiping ring (36) is arranged in the C-shaped ring (40), and the wiping ring (36) is a sponge ring.

7. The worm gear lead screw elevator as recited in claim 1, wherein: the utility model discloses a turbine, including casing, lead screw, turbine (1), friction wheel (44), cleaning ring (41) are connected with in the casing top rotation of turbine (1), cleaning ring (41) cover is established outside lead screw (2), the casing top sliding connection of turbine (1) has cleaning rod (42), cleaning rod (42) are located cleaning ring (41) inboard, cleaning ring (41) inner circle fixedly connected with gradually lug (43), friction wheel (44) are connected in the casing top rotation of turbine (1), friction wheel (44) are located between cleaning ring (41) and lead screw (2) and all laminate with the two outer wall, lead screw (2) rotate drive friction wheel (44) and rotate and then drive cleaning ring (41) rotation.

8. The worm gear lead screw elevator as recited in claim 7, wherein: the utility model discloses a turbine, including casing top fixedly connected with mounting bracket (45) of turbine (1), cleaning rod (42) tip fixedly connected with brush (46) and middle part are equipped with logical window (47), mounting bracket (45) pass the two sliding fit of logical window (47), fixedly connected with cleans spring (48) between mounting bracket (45) and the logical window (47), friction wheel (44) are rotated through the one-way axle and are connected at the casing top of turbine (1).