CN115010044A - Improved high lift type screw jack - Google Patents
Improved high lift type screw jack Download PDFInfo
- Publication number
- CN115010044A CN115010044A CN202210474672.0A CN202210474672A CN115010044A CN 115010044 A CN115010044 A CN 115010044A CN 202210474672 A CN202210474672 A CN 202210474672A CN 115010044 A CN115010044 A CN 115010044A
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- Prior art keywords
- jack
- fixedly connected
- gear
- mounting
- transmission shaft
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
- B66F7/12—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks
- B66F7/14—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks screw operated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
- B66F3/16—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through bevel-wheel gearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
- B66F3/20—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through multiple or change-speed gearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
- F16H1/22—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H1/222—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with non-parallel axes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The invention discloses an improved high lift type screw jack in the technical field of screw jacks, which comprises a trolley, an installation rail and a jack, wherein the installation rail is fixedly installed at the upper end of the trolley, the installation rail is provided with a steering mechanism, the jack is fixedly arranged at the upper end of a steering mechanism, the upper end of the jack is fixedly connected with a supporting plate, and the steering mechanism can be kept parallel to the stress surface of a heavy object in the process of supporting the heavy object by the jack; the jack can directly work on the premise of working on the stress surface of the inclined ground or the inclined heavy object in the working process, the ground or the stress surface does not need to be manually changed, the use difficulty of the jack is greatly reduced, and the application range of the jack is enlarged.
Description
Technical Field
The invention relates to the technical field of screw jacks, in particular to an improved high-lift type screw jack.
Background
The jack is simple and practical hoisting equipment, brings great convenience to life and work of people, and is widely applied to various fields.
Current jack is in the use, can't adjust the parallel between holding surface and the working face by oneself, need the artifical inclination of adjusting holding surface and working face, make the use scene of jack receive the restriction, and the mode error of manual regulation is too big, make the jack in the use, except receiving the axial force that is used for promoting the working face, still can receive the effect of radial force, make the jack open the process and support the in-process, the extrusion force of drive disk assembly increases, the loss increases, drive disk assembly to the jack produces the destruction, the life of jack has been influenced.
Based on this, the present invention provides an improved high lift type screw jack to solve the above problems.
Disclosure of Invention
The invention aims to provide an improved high lift type screw jack, which solves the problems that the existing screw jack cannot automatically adjust the parallelism between a supporting surface and a working surface in the use process, the inclination of the supporting surface and the inclination of the working surface need to be manually adjusted, the use scene of the screw jack is limited, the error of the manual adjustment mode is overlarge, the screw jack is subjected to radial force besides axial force for pushing the working surface in the use process, the extrusion force of a transmission part is increased, the loss is increased, the transmission part of the screw jack is damaged in the opening process and the supporting process, and the service life of the screw jack is influenced.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an improved generation high lift formula screw jack, includes shallow, installation rail and jack, installation rail fixed mounting is in the shallow upper end, the installation rail is provided with steering mechanism, the jack is fixed to be set up in the steering mechanism upper end, jack upper end fixedly connected with backup pad, steering mechanism can be parallel with the stress surface of heavy object at the in-process that the jack supported the heavy object.
As a further scheme of the invention, the lower end of the supporting plate is vertically and fixedly connected with a plurality of telescopic rods which take the jack as an axis and are arranged in a circumferential array, and the lower ends of the telescopic rods are fixedly arranged on the steering mechanism.
As a further scheme of the invention, a mounting groove is formed in the center of the lower end of the supporting plate, a first shaft sleeve is arranged in the mounting groove, a plurality of first springs in a circumferential array are fixedly connected to the outer wall of the first shaft sleeve, the first springs are fixedly connected with the inner wall of the mounting groove, and the upper end of the jack is vertically clamped with the inner wall of the first shaft sleeve in a sliding manner.
As a further scheme of the invention, the mounting rail comprises first rails which are symmetrically arranged front and back, the first rails are fixedly connected with the cart, the upper end of the first rails is fixedly connected with a support rod, and the upper end of the support rod is fixedly connected with a second rail; the steering mechanism comprises a first mounting plate, the upper end of the first mounting plate is rotatably connected with the lower end of the jack, the upper end of the first mounting plate is fixedly connected with the lower end of the telescopic rod, the front side and the rear side of the left side of the first mounting plate are fixedly connected with slide bars, the slide bar is connected with the second track in a sliding way, the front end and the rear end of the right side of the first mounting plate are fixedly connected with connecting blocks, a rotating shaft is fixedly connected between the connecting blocks, the rotating shaft is rotatably connected with a second mounting plate, the second mounting plate is vertically sleeved with a threaded rod, the lower end of the threaded rod is rotationally connected with a third mounting plate, the front end and the rear end of the third mounting plate are fixedly connected with sliding blocks, the slider and first track sliding connection, be provided with actuating mechanism on the first mounting panel, actuating mechanism is used for controlling jack extension and the relative threaded rod rebound of second mounting panel.
As a further scheme of the invention, the driving mechanism comprises a first gear, the first gear is rotatably connected with the upper end of a second mounting plate, the inner wall of the first gear is in threaded connection with a threaded rod, teeth are arranged at the bottom of the jack, a second gear is arranged between the teeth and the first gear, a first transmission shaft is fixedly connected with the upper end of the second gear, a first helical gear is fixedly connected with the upper end of the first transmission shaft, the first helical gear is meshed with a second helical gear, the second helical gear is fixedly connected with a second transmission shaft, the second transmission shaft is rotatably connected with a second shaft sleeve, the lower end of the second shaft sleeve is rotatably connected with a mounting shaft, the mounting shaft is rotatably connected with a mounting frame, the mounting frame is fixedly connected with the first mounting plate, the second transmission shaft is fixedly connected with a rocker, and the second transmission shaft is provided with a switching mechanism, the switching mechanism can change the meshing state between the first gear and the teeth and the second gear according to the attaching state of the supporting plate and the supporting surface, the first transmission shaft and the second transmission shaft are both rotatably connected with a connecting sleeve, and the connecting sleeve is used for keeping the meshing state of the first helical gear and the second helical gear.
As a further scheme of the invention, the switching mechanism comprises a first fan-shaped mounting shell, the left side and the right side of the lower end of the inner wall of the first fan-shaped mounting shell are both provided with a groove and fixedly connected with an elastic telescopic rod, the upper end of the elastic telescopic rod is both fixedly connected with an arc-shaped fixture block, one side of the arc-shaped fixture block, which is close to the central position of the first fan-shaped mounting shell, is provided with a chamfer, the middle position of the upper end of the inner wall of the first fan-shaped mounting shell is provided with a first transmission tooth, the outer wall of the second transmission shaft is fixedly connected with a bevel gear, the bevel gear can be meshed with the first transmission tooth, the front end of the first fan-shaped mounting shell is provided with a second fan-shaped mounting shell, the middle position of the lower end of the inner wall of the second fan-shaped mounting shell is fixedly connected with a second transmission tooth, the second transmission tooth can be meshed with the bevel gear, the rear end of the second transmission tooth is fixedly connected with a stop block, and the end of the second transmission shaft is fixedly connected with a second spring, the second spring is fixedly connected with the second shaft sleeve, the first fan-shaped mounting shell and the second fan-shaped mounting shell are fixedly connected with the first mounting plate, the first fan-shaped mounting shell is externally connected with a clamping mechanism, and the clamping mechanism is used for aligning the position of the second transmission shaft behind the supporting surface at the supporting plate.
As a further scheme of the invention, the wheel surface of the wheel of the cart is made of hard rubber.
As a further scheme of the invention, a crank of the rocker is rotatably connected with the rocker.
Compared with the prior art, the invention has the beneficial effects that:
1. can be parallel with the stress surface of heavy object at the in-process of jack support heavy object through steering mechanism, make jack and the stress surface of heavy object keep the vertical state, and then make the jack only receive the effect of axial force in the course of the work, play the guard action to the jack, steering action through steering mechanism simultaneously, make the jack in the course of the work, can directly carry out work under the working prerequisite of the stress surface of the heavy object on slope ground or slope, no longer need the manual work to change ground or stress surface, the use degree of difficulty of jack has greatly been reduced, the application scope of jack has been increased.
2. Through the setting of telescopic link, the radial force that makes the jack receive in the course of the work is undertaken by the telescopic link to reduce the wearing and tearing of driving medium in the jack, further improvement the life of jack.
3. Through the setting of first axle sleeve, make the jack upper end slide in the mounting groove, further make the transverse force between jack and the backup pad reduce, make the transverse force that the backup pad received can be supported by the telescopic link basically, further assurance jack can not receive the interference of radial force in the course of the work to reduce the wearing and tearing of driving medium in the jack, further improvement the life of jack.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is an enlarged schematic view of the point A in FIG. 1;
FIG. 3 is a front cross-sectional view of the guide rail of the overall construction of the present invention;
FIG. 4 is a schematic top-down view of the overall structure of the present invention;
FIG. 5 is a rear view of FIG. 4;
FIG. 6 is an enlarged view of B in FIG. 5;
FIG. 7 is a schematic view of FIG. 5 with the first sector mounting shell and its internal components removed;
FIG. 8 is an enlarged view of FIG. 7 at C;
FIG. 9 is a schematic front sectional view of the jack of the overall construction of the present invention;
fig. 10 is an enlarged view of fig. 9 at D.
In the drawings, the components represented by the respective reference numerals are listed below:
the trolley comprises a trolley 1, a jack 2, a supporting plate 3, an expansion link 4, a mounting groove 51, a first shaft sleeve 52, a first spring 53, a first rail 61, a supporting rod 62, a second rail 63, a first mounting plate 71, a sliding rod 72, a connecting block 73, a rotating shaft 74, a second mounting plate 75, a threaded rod 76, a third mounting plate 77, a sliding block 78, a first gear 81, a tooth 82, a second gear 83, a first transmission shaft 84, a first bevel gear 85, a second bevel gear 86, a second transmission shaft 87, a second shaft sleeve 88, a mounting shaft 89, a mounting frame 810, a rocker 811, a connecting sleeve 812, a first sector mounting shell 91, an elastic expansion link 92, an arc-shaped fixture block 93, a first transmission tooth 94, a bevel gear 95, a second sector mounting shell 96, a second transmission tooth 97, a stop 98 and a second spring 99.
Detailed Description
Referring to fig. 1-10, the present invention provides a technical solution: the improved high lift type screw jack comprises a trolley 1, an installation rail and a jack 2, wherein the installation rail is fixedly installed at the upper end of the trolley 1, the installation rail is provided with a steering mechanism, the jack 2 is fixedly arranged at the upper end of the steering mechanism, a supporting plate 3 is fixedly connected to the upper end of the jack 2, and the steering mechanism can be kept parallel to the stress surface of a heavy object in the process that the jack 2 supports the heavy object.
Can support the in-process of heavy object and the stress surface of heavy object through steering mechanism and keep parallel at jack 2, make jack 2 and the stress surface of heavy object keep the vertical state, and then make jack 2 only receive the effect of axial force in the course of the work, play the guard action to jack 2, the steering action through steering mechanism simultaneously, make jack 2 in the course of the work, can directly carry out work under the working prerequisite of the stress surface of the heavy object on slope ground or slope, no longer need the manual work to change ground or stress surface, the use degree of difficulty of jack 2 has greatly been reduced, the application scope of jack 2 has been increased.
As a further scheme of the invention, the lower end of the supporting plate 3 is vertically and fixedly connected with a plurality of telescopic rods 4 which take the jack 2 as an axis and are arranged in a circumferential array manner, and the lower ends of the telescopic rods 4 are fixedly arranged on a steering mechanism.
Through the setting of telescopic link 4, the radial force that makes jack 2 receive in the course of the work is undertaken by telescopic link 4 to reduce the wearing and tearing of driving medium in jack 2, further improved jack 2's life.
As a further scheme of the invention, a mounting groove 51 is formed in the center of the lower end of the support plate 3, a first shaft sleeve 52 is arranged in the mounting groove 51, a plurality of first springs 53 in a circumferential array are fixedly connected to the outer wall of the first shaft sleeve 52, the first springs 53 are all fixedly connected with the inner wall of the mounting groove 51, and the upper end of the jack 2 is vertically clamped with the inner wall of the first shaft sleeve 52 in a sliding manner.
Through the setting of first axle sleeve 52, make 2 upper ends of jack slide in mounting groove 51, further make the transverse force between jack 2 and the backup pad 3 reduce, make the transverse force that backup pad 3 received can be supported by telescopic link 4 basically, further assurance jack 2 can not receive the interference of radial force in the course of the work, in order to reduce the wearing and tearing of driving medium in jack 2, further improvement jack 2's life.
As a further scheme of the present invention, the mounting rail includes a first rail 61 symmetrically arranged in front and back, the first rail 61 is fixedly connected with the cart 1, a support rod 62 is fixedly connected to the upper end of the first rail 61, and a second rail 63 is fixedly connected to the upper end of the support rod 62; the steering mechanism comprises a first mounting plate 71, the upper end of the first mounting plate 71 is rotatably connected with the lower end of the jack 2, the upper end of the first mounting plate 71 is fixedly connected with the lower end of the telescopic rod 4, the front side and the rear side of the left side of the first mounting plate 71 are fixedly connected with a sliding rod 72, the sliding rod 72 is connected with the second track 63 in a sliding manner, the front end and the rear end of the right side of the first mounting plate 71 are fixedly connected with connecting blocks 73, a rotating shaft 74 is fixedly connected between the connecting blocks 73, the rotating shaft 74 is rotatably connected with a second mounting plate 75, the second mounting plate 75 is vertically sleeved with a threaded rod 76, the lower end of the threaded rod 76 is rotatably connected with a third mounting plate 77, the front end and the rear end of the third mounting plate 77 are fixedly connected with sliding blocks 78, the sliding blocks 78 are connected with the first tracks 61 in a sliding manner, the first mounting plate 71 is provided with a drive mechanism for controlling the jack 2 to extend and the second mounting plate 75 to move upwardly relative to the threaded rod 76.
As a further aspect of the present invention, the driving mechanism includes a first gear 81, the first gear 81 is rotatably connected to the upper end of the second mounting plate 75, the inner wall of the first gear 81 is threadedly connected to the threaded rod 76, the bottom of the jack 2 is provided with teeth 82, the teeth 82 and the first gear 81 are provided with a second gear 83, the upper end of the second gear 83 is fixedly connected to a first transmission shaft 84, the upper end of the first transmission shaft 84 is fixedly connected to a first helical gear 85, the first helical gear 85 is engaged with a second helical gear 86, the second helical gear 86 is fixedly connected to a second transmission shaft 87, the second transmission shaft 87 is rotatably connected to a second bushing 88, the upper end and the lower end of the second bushing 88 are rotatably connected to a mounting shaft 89, the mounting shaft 89 is rotatably connected to a mounting frame 810, the mounting frame 810 is fixedly connected to the first mounting plate 71, the second transmission shaft 87 is fixedly connected to a rocker 811, the second transmission shaft 87 is provided with a switching mechanism, the switching mechanism can change the meshing state between the first gear 81 and the teeth 82 and the second gear 83 according to the attaching state of the support plate 3 and the support surface, the first transmission shaft 84 and the second transmission shaft 87 are both rotatably connected with a connecting sleeve 812, and the connecting sleeve 812 is used for keeping the meshing state of the first helical gear 85 and the second helical gear 86.
The inclination of the first mounting plate 71 and the elongation of the jack 2 are controlled by changing the meshing state between the first gear 81 and the teeth 82 and the second gear 83, so that the whole alignment and support work is completed at one time, the working links are reduced, the labor intensity of workers is reduced, and the operation difficulty of the equipment is reduced.
As a further scheme of the present invention, the switching mechanism includes a first fan-shaped mounting shell 91, the left and right sides of the lower end of the inner wall of the first fan-shaped mounting shell 91 are both slotted and fixedly connected with elastic telescopic rods 92, the upper end of each elastic telescopic rod 92 is fixedly connected with an arc-shaped fixture block 93, one side of each arc-shaped fixture block 93, which is close to the central position of the first fan-shaped mounting shell 91, is provided with a chamfer, the middle position of the upper end of the inner wall of the first fan-shaped mounting shell 91 is provided with a first transmission tooth 94, the outer wall of the second transmission shaft 87 is fixedly connected with a bevel gear 95, the bevel gear 95 can be engaged with the first transmission tooth 94, the front end of the first fan-shaped mounting shell 91 is provided with a second fan-shaped mounting shell 96, the middle position of the lower end of the inner wall of the second fan-shaped mounting shell 96 is fixedly connected with a second transmission tooth 97, the second transmission tooth 97 can be engaged with the bevel gear 95, and the rear end of the second transmission tooth 97 is fixedly connected with a stopper 98, second transmission shaft 87 tip fixedly connected with second spring 99, second spring 99 and second axle sleeve 88 fixed connection, first fan-shaped installation shell 91 and second fan-shaped installation shell 96 all with first mounting panel 71 fixed connection, first fan-shaped installation shell 91 is external to have the block mechanism, the block mechanism is used for the position of backup pad 3 alignment holding surface after-fixing second transmission shaft 87.
According to the invention, the first transmission gear 94, the bevel gear 95 and the second transmission gear 97 are arranged to rotate the second transmission shaft 87, so that the meshing state of the second gear 83 is further changed, the equipment can be automatically displaced through a mechanical structure, the operation difficulty is reduced, and the moving accuracy of the second transmission shaft 87 is improved.
As a further aspect of the present invention, the tread of the wheel of the cart 1 is made of hard rubber.
The wheel surface of the wheel is made of hard rubber, so that the cart is not easy to displace due to the elasticity of the wheel after the wheel is clamped when the equipment is used.
As a further aspect of the present invention, the crank of rocker 811 is pivotally connected to rocker 811.
Through rotating the crank that sets up, make the workman at the in-process of carrying out the operation, be difficult for grinding the hand.
The working principle is as follows: when the device works, the cart 1 is moved to the position below a heavy object, then the cart 1 is fixed, (refer to fig. 1) then the rocker 811 is manually rotated counterclockwise, so that the second transmission shaft 87 rotates counterclockwise, at this time, the second transmission shaft 87 deflects left under the limitation of the left arc-shaped clamping block 93, the corresponding second gear 83 is meshed with the tooth 82 at the lower end of the jack 2, the second transmission shaft 87 drives the lower end of the jack 2 to rotate clockwise through the first bevel gear 85 and the second bevel gear 86, so that the jack 2 extends until the left end of the support plate 3 contacts the heavy object (when the device is used, the distance between the left end of the support plate 3 and the force bearing surface of the heavy object is shortest by adjusting the direction of the cart 1), at this time, the force required by the tooth 82 driven by the second gear 83 is increased, and the right reaction force borne by the corresponding second gear 83 is increased (the right reaction force borne by the second gear 83 makes the second transmission shaft 87 have the tendency of rotating rightward), the second transmission shaft 87 is enabled to rotate rightwards under the limitation of the left arc-shaped fixture block 93, a bevel gear 95 is further enabled to be meshed with the first transmission tooth 94, then, along with the anticlockwise rotation of the second transmission shaft 87, the second transmission shaft 87 moves rightwards under the action of the first transmission tooth 94 and is extruded to enter the right arc-shaped fixture block 93, and the second gear 83 is enabled to be meshed with the first gear 81; the second gear 83 drives the first gear 81 to rotate, so that the first gear 81 moves upwards along the threaded rod 76; further tilting the right side of the first mounting plate 71 and inclining the jack 2; at this time, the first mounting plate 71 drives the sliding rod 72 and the second mounting plate 75 to move right until the support plate 3 is flush with the support surface, the force required for the support plate 3 to tilt continuously increases, so that the force required for the second gear 83 to drive the first gear 81 to rotate increases, the corresponding reaction force applied to the second gear 83 to the right front increases, since the second transmission shaft 87 reaches the rightmost end of the first fan-shaped mounting shell 91, the second transmission shaft 87 cannot move right continuously, the second transmission shaft 87 moves forward (the second spring 99 is compressed), and drives the bevel gear 95 to enter the second fan-shaped mounting shell 96 to be meshed with the second transmission gear 97, and then along with the counterclockwise rotation of the second transmission shaft 87, the second transmission shaft 87 moves left under the action of the second transmission gear 97, the stopper 98 limits the bevel gear 95 from entering the first fan-shaped mounting shell 91 during the movement until the second transmission shaft 87 moves to the leftmost end, and the bevel gear 95 no longer contacts with the stopper 98, under the action of the elastic force of the second spring 99, the second transmission shaft 87 moves backwards and drives the bevel gear 95 to enter the arc-shaped fixture block 93 at the left end of the first fan-shaped mounting shell 91 (the bevel gear 95 can pass through the arc-shaped fixture block 93 by arranging a chamfer on the end surface of the arc-shaped fixture block 93 or the bevel gear 95), meanwhile, the second gear 83 moves to the left end along with the second transmission shaft 87 and is meshed with the teeth 82, then the position of the second transmission shaft 87 is fixed through the clamping mechanism, the second gear 83 is kept meshed with the teeth 82, and finally, as the rocker 811 is manually rotated anticlockwise, the second gear 83 drives the jack 2 to extend through the teeth 82 to jack up a heavy object;
after the equipment is used, the equipment is limited by contacting the clamping mechanism, and then the rocker 811 is rotated clockwise, so that the equipment is reset and is reserved for next use.
Claims (8)
1. An improved generation high lift formula screw jack which characterized in that: including shallow (1), installation rail and jack (2), installation rail fixed mounting is in shallow (1) upper end, the installation rail is provided with steering mechanism, jack (2) are fixed to be set up in the steering mechanism upper end, jack (2) upper end fixedly connected with backup pad (3), steering mechanism can support the in-process of heavy object at jack (2) and keep parallel with the stress surface of heavy object.
2. An improved high-lift screw jack as set forth in claim 1 wherein: the vertical fixedly connected with of backup pad (3) lower extreme is a plurality of telescopic link (4) that are the circumference array and arrange that use jack (2) as the axle center, telescopic link (4) lower extreme is fixed to be set up on steering mechanism.
3. An improved high-lift screw jack as set forth in claim 2 wherein: supporting plate (3) lower extreme central point puts and has seted up mounting groove (51), be provided with first axle sleeve (52) in mounting groove (51), a plurality of first springs (53) that are the circumference array of first axle sleeve (52) outer wall fixedly connected with, first spring (53) all with mounting groove (51) inner wall fixed connection, jack (2) upper end and the vertical slip joint of first axle sleeve (52) inner wall.
4. An improved high-lift screw jack as set forth in claim 3 wherein: the mounting rail comprises first rails (61) which are symmetrically arranged front and back, the first rails (61) are fixedly connected with the trolley (1), the upper end of each first rail (61) is fixedly connected with a support rod (62), and the upper end of each support rod (62) is fixedly connected with a second rail (63); the steering mechanism comprises a first mounting plate (71), the upper end of the first mounting plate (71) is rotatably connected with the lower end of a jack (2), the upper end of the first mounting plate (71) is fixedly connected with the lower end of a telescopic rod (4), a sliding rod (72) is fixedly connected with the front side and the rear side of the left of the first mounting plate (71), the sliding rod (72) is slidably connected with a second track (63), a connecting block (73) is fixedly connected with the front end and the rear end of the right side of the first mounting plate (71), a rotating shaft (74) is fixedly connected between the connecting blocks (73), a second mounting plate (75) is rotatably connected with the rotating shaft (74), a threaded rod (76) is vertically sleeved on the second mounting plate (75), the lower end of the threaded rod (76) is rotatably connected with a third mounting plate (77), and a sliding block (78) is fixedly connected with the front end and the rear end of the third mounting plate (77), slider (78) and first track (61) sliding connection, be provided with actuating mechanism on first mounting panel (71), actuating mechanism is used for controlling jack (2) extension and relative threaded rod (76) rebound of second mounting panel (75).
5. The improved high-lift screw jack of claim 4, wherein: the driving mechanism comprises a first gear (81), the first gear (81) is rotatably connected with the upper end of a second mounting plate (75), the inner wall of the first gear (81) is in threaded connection with a threaded rod (76), teeth (82) are arranged at the bottom of the jack (2), a second gear (83) is arranged on the teeth (82) and the first gear (81), the upper end of the second gear (83) is fixedly connected with a first transmission shaft (84), the upper end of the first transmission shaft (84) is fixedly connected with a first helical gear (85), the first helical gear (85) is meshed with a second helical gear (86), the second helical gear (86) is fixedly connected with a second transmission shaft (87), the second transmission shaft (87) is rotatably connected with a second shaft sleeve (88), the upper end and the lower end of the second shaft sleeve (88) are rotatably connected with a mounting shaft (89), and the mounting shaft (89) is rotatably connected with a mounting frame (810), installing frame (810) and first mounting panel (71) fixed connection, second transmission shaft (87) fixedly connected with rocker (811), second transmission shaft (87) are provided with the switching mechanism, the switching mechanism can change the engaged state between first gear (81) and tooth (82) and second gear (83) according to backup pad (3) and the laminating state of holding surface, first transmission shaft (84) and second transmission shaft (87) are all rotated and are connected with adapter sleeve (812), adapter sleeve (812) are used for keeping the engaged state of first helical gear (85) and second helical gear (86).
6. An improved high-lift screw jack as set forth in claim 5 wherein: the switching mechanism comprises a first fan-shaped mounting shell (91), the left side and the right side of the lower end of the inner wall of the first fan-shaped mounting shell (91) are respectively provided with a groove and fixedly connected with an elastic telescopic rod (92), the upper end of the elastic telescopic rod (92) is respectively and fixedly connected with an arc-shaped fixture block (93), one side, close to the central position of the first fan-shaped mounting shell (91), of the arc-shaped fixture block (93) is provided with a chamfer, the middle position of the upper end of the inner wall of the first fan-shaped mounting shell (91) is provided with a first transmission tooth (94), the outer wall of the second transmission shaft (87) is fixedly connected with a bevel gear (95), the bevel gear (95) can be meshed with the first transmission tooth (94), the front end of the first fan-shaped mounting shell (91) is provided with a second fan-shaped mounting shell (96), the middle position of the lower end of the inner wall of the second fan-shaped mounting shell (96) is fixedly connected with a second transmission tooth (97), and the second transmission tooth (97) can be meshed with the bevel gear (95), second driving gear (97) rear end fixedly connected with dog (98), second transmission shaft (87) tip fixedly connected with second spring (99), second spring (99) and second axle sleeve (88) fixed connection, first fan-shaped installation shell (91) and second fan-shaped installation shell (96) all with first mounting panel (71) fixed connection, first fan-shaped installation shell (91) are external to have the block mechanism, the block mechanism is used for the position of backup pad (3) alignment holding surface after-fixing second transmission shaft (87).
7. The improved high-lift screw jack of claim 6, wherein: the wheel surface of the wheel of the cart (1) is made of hard rubber.
8. An improved high-lift screw jack as set forth in claim 7 wherein: the crank of the rocker (811) is rotatably connected with the rocker (811).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210474672.0A CN115010044B (en) | 2022-04-29 | 2022-04-29 | Improved generation high lift formula screw jack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210474672.0A CN115010044B (en) | 2022-04-29 | 2022-04-29 | Improved generation high lift formula screw jack |
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| Publication Number | Publication Date |
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| CN115010044A true CN115010044A (en) | 2022-09-06 |
| CN115010044B CN115010044B (en) | 2023-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210474672.0A Active CN115010044B (en) | 2022-04-29 | 2022-04-29 | Improved generation high lift formula screw jack |
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Citations (7)
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|---|---|---|---|---|
| DE20013994U1 (en) * | 2000-08-14 | 2001-02-08 | Bauerfeld, Frank, 08527 Plauen | Device for lifting and tensioning motor vehicles |
| US20030218157A1 (en) * | 2002-05-23 | 2003-11-27 | Arzouman Harry H. | Economical lifting device-jack stand |
| CN203558811U (en) * | 2013-11-12 | 2014-04-23 | 国家电网公司 | Lift-type auxiliary emplacement device of high-voltage switch cabinet |
| CN104891385A (en) * | 2015-05-20 | 2015-09-09 | 第一拖拉机股份有限公司 | Electric screw lift platform with vertical guiding and stroke control |
| CN105329461A (en) * | 2015-11-24 | 2016-02-17 | 河北利箭精密仪器有限公司 | Simple aerial bomb hanging trolley |
| CN105502221A (en) * | 2016-01-22 | 2016-04-20 | 蔡婷婷 | Three-dimensional direction self-adaptive plane hydraulic jack |
| CN213865287U (en) * | 2020-11-20 | 2021-08-03 | 瑞安市遵盛汽车零部件有限公司 | Jack support bracket |
-
2022
- 2022-04-29 CN CN202210474672.0A patent/CN115010044B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20013994U1 (en) * | 2000-08-14 | 2001-02-08 | Bauerfeld, Frank, 08527 Plauen | Device for lifting and tensioning motor vehicles |
| US20030218157A1 (en) * | 2002-05-23 | 2003-11-27 | Arzouman Harry H. | Economical lifting device-jack stand |
| CN203558811U (en) * | 2013-11-12 | 2014-04-23 | 国家电网公司 | Lift-type auxiliary emplacement device of high-voltage switch cabinet |
| CN104891385A (en) * | 2015-05-20 | 2015-09-09 | 第一拖拉机股份有限公司 | Electric screw lift platform with vertical guiding and stroke control |
| CN105329461A (en) * | 2015-11-24 | 2016-02-17 | 河北利箭精密仪器有限公司 | Simple aerial bomb hanging trolley |
| CN105502221A (en) * | 2016-01-22 | 2016-04-20 | 蔡婷婷 | Three-dimensional direction self-adaptive plane hydraulic jack |
| CN213865287U (en) * | 2020-11-20 | 2021-08-03 | 瑞安市遵盛汽车零部件有限公司 | Jack support bracket |
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| Publication number | Publication date |
|---|---|
| CN115010044B (en) | 2023-10-17 |
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