CN209396816U - A kind of screw jack - Google Patents
A kind of screw jack Download PDFInfo
- Publication number
- CN209396816U CN209396816U CN201821861637.XU CN201821861637U CN209396816U CN 209396816 U CN209396816 U CN 209396816U CN 201821861637 U CN201821861637 U CN 201821861637U CN 209396816 U CN209396816 U CN 209396816U
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- Prior art keywords
- gear
- shell
- bevel gear
- outside
- mandril
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- 238000010276 construction Methods 0.000 claims abstract description 19
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000006978 adaptation Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- Gear Transmission (AREA)
Abstract
The utility model provides a kind of screw jack, it is related to technical field of crane equipment, including handle, pedestal, support tube, the shell for connecting pedestal and support tube, thrust bearing, is adapted to the first bevel gear of connection, the guide pipe, mandril, big wire role and the minor leading screw that are arranged in inside support tube, top component, second bevel gear and gear shaft with thrust bearing；Shell and gear shaft connection place are provided with the gear bush being set on the outside of gear shaft, and gear bush outer wall and shell are relatively fixed；Gear bush is provided with the elastic construction for abutting second bevel gear end face close to the end of second bevel gear, and elastic construction border is arranged in gear bush end, and elastic construction is in compressive state always；Integrally formed first sliding block and the second sliding block are respectively arranged on the outside of the utility model mandril and guide pipe, sliding block is arranged on the outside, improves processing efficiency；Gear bush with elastic piece effectively solves the stuck of gear drive process appearance, extends jack service life.
Description
Technical field
The utility model relates to technical field of crane equipment, and in particular to a kind of screw jack.
Background technique
Screw jack is one of Manual hoisting tool kind, compact-sized, and lifting range is wide, reasonable utilization rocking bar
It swings, makes pinion rotation, close and operate through a pair of of conical gear, drive screw rod rotation, push jacking sleeve that weight is made to increase
Or decline, it has wide range of applications.The screw rod of screw jack commonly used in the prior art inside it generally use it is separately manufactured,
It is assembled again, therefore the requirement on machining accuracy of each components is high, in addition, being easy between large and small gear when using gear drive
Occur stuck, therefore technical staff has carried out the improvement of some column to each structure of screw jack.
Such as screw jack technical solution disclosed in patent CN201720005811.X is structure as a whole for shell, it should
Structure internal there are the volume and weight that redundant space increases jack, bevel pinion part and periphery in transmission chain connect structure
Axle sleeve be hard contact, cooperated loose tension all to be easy to cause stuck phenomenon with gear wheel.For another example patent
A kind of screw jack disclosed in CN200910018306.9, jack has certain inclination with weight contact surface is played in order to prevent
Angle and so that jack is also easy to produce deflection oblique, therefore top lift part is rotationally assembled on jacking sleeve top, in jacking sleeve
Outer wall on fix a quiet locking member, in top lift part be arranged one with the quiet locking member collective effect can make top lift part position
The dynamic locking member of locking, the dynamic locking member is by elastic external force prestressing indentation latched position or overcome elastic prestressing one
It is removed under effect from latched position, advantageously accounts for position therewith and stuck phenomenon occur.
The technical solution of above-mentioned patent disclosure improves the correlated performance of screw jack, but because between gear
There are gaps, therefore noise can be generated in the environment of vibration, and jack overall volume is larger.
Utility model content
The utility model aim is to provide a kind of screw jack, is just easy to appear card for solving gear drive process
Dead phenomenon reduces the noise in the environment middle gear transmission generation of vibration, easy to process.
To reach above-mentioned purpose, the utility model proposes following technical solutions: a kind of screw jack, including handle, bottom
Seat, the support tube of both ends open, the shell for connecting pedestal and supporting bottom of the tube, the fixed company of bearing bore with the setting of pedestal upper surface
The thrust bearing that connects, the first bevel gear that connection is adapted to thrust bearing, the guide pipe being successively set on inside support tube, top
Bar, big wire role, minor leading screw are arranged in outside support tube, the top component that is connected at the top of mandril and are partially installed in shell
The second bevel gear portion in portion；
The top component includes that top and interconnecting piece, interconnecting piece are set as the columnar structured of both ends open, the circle
Tubular construction one end and top rivet, and the other end is set at the top of mandril, are interference fitted with mandril；
The minor leading screw bottom is fixed on first bevel gear, and big wire role is set on the outside of minor leading screw, minor leading screw and big wire role
Form step of threads pair；The mandril is set on the outside of big wire role, and mandril and big wire role form second level screw thread pair；The guide pipe
It is set on the outside of mandril, the outer wall of mandril forms the first sliding block of protrusion, offers on the outside of guide pipe longitudinal from end thereon
The first sliding groove of extension, first sliding groove bottom is no more than guide pipe lower end surface, and first sliding groove is adapted to the first sliding block；The branch
Stay tube is set on the outside of guide pipe, and the outer wall of guide pipe forms the second sliding block of protrusion, is offered on the outside of the support tube certainly
The second sliding slot and third sliding slot that end longitudinally extends thereon, the second sliding slot and third sliding slot bottom are no more than support tube
Lower end surface, and first sliding groove and second sliding slot adaptation, the second sliding block and third sliding slot adaptation；
The second bevel gear portion includes second bevel gear and the gear shaft that is axially arranged along it, the second bevel gear with
First bevel gear adaptation transmission；The shell side is provided with opening, and the gear shaft portion is piercing in opening, and the handle connects
It is connected to the part that gear shaft is piercing in opening.Wherein, the first sliding block and the second sliding block are separately positioned on mandril and guiding pipe outer wall,
Convenient for factory process.
Further, the shell and gear shaft connection place are provided with the gear bush being set on the outside of gear shaft, described
Gear bush outer wall and shell aperture are relatively fixed；The gear bush is provided with abutting close to the end border of second bevel gear
The elastic construction of second bevel gear end face, and elastic construction is in compressive state always.
Further, the gear bush outer wall and shell aperture are interference fitted, and elastic construction is set as to gear shaft
The elastic piece that set outside is expanded；The gear bush outer wall is provided with boss, and boss and shell are interference fitted；Due to elastic construction
Always it is in compressive state, therefore when gear matching loose or compression, elastic piece changes according to the elastic characteristic of itself to be compressed
State adjusts the Elastic Contact between first bevel gear and second bevel gear.
Further, the gear bush outer wall is provided with limit point, and limit point is located at gear shaft and is piercing in shell aperture
Part；Described limit point one end abuts boss, and is higher than boss, limit of the limit point for boss and shell cooperation.
Further, the gear bush is plastic part, is integrally formed using injection moulding process, easy to process.
From the above technical scheme, the screw jack that the technical solution of the utility model provides obtains to be had as follows
Beneficial effect:
The screw jack of the utility model, by the way that slide block structure to be arranged in the outer wall of mandril and/or guide pipe, so that
The processing of mandril and guide pipe is easier, and is additionally provided with support tube in the outer wall of guide pipe, and twice are arranged simultaneously in support tube
Sliding slot, so that guide pipe structure and sliding are more stable, while support tube is adapted to setting with guide pipe, while being used as relevant outer
Shell, reduces inside jack that there are redundant spaces, reduces the volume and weight of jack.
Gear bush is arranged in the utility model screw jack at the gear shaft of second bevel gear and cage connection, passes through
It is in compressive state always in the close second bevel gear end border of gear bush setting abutting second bevel gear end face
Elastic construction realizes the Elastic Contact of first bevel gear and second bevel gear, and appearance is stuck during solution gear drive, has
Effect reduces the noise in the environment middle gear transmission generation of vibration；Boss and limit point, boss are also set up in gear bush outer wall
Relatively fixed with shell, limit point limits the adaptation position of boss and shell, prevents gear bush in use
It slides into shell；Gear bush with elastic construction effectively solves the problems, such as gear-driven stuck, extension jack use
Service life.
It should be appreciated that as long as aforementioned concepts and all combinations additionally conceived described in greater detail below are at this
It can be viewed as a part of the utility model theme of the disclosure in the case that the design of sample is not conflicting.
The foregoing and other side of the utility model introduction can be more fully appreciated from the following description in conjunction with attached drawing
Face, embodiment and feature.The features and/or benefits of other additional aspects such as illustrative embodiments of the utility model
To be obvious in the following description, or will be learnt in the practice by the specific embodiment instructed according to the utility model.
Detailed description of the invention
Attached drawing is not intended to drawn to scale.In the accompanying drawings, identical or nearly identical group each of is shown in each figure
It can be indicated by the same numeral at part.For clarity, in each figure, not each component part is labeled.
Now, by by example and be described in reference to the drawings the utility model various aspects embodiment, in which:
Fig. 1 is the sectional view in its short transverse of the utility model screw jack；
Fig. 2 is the utility model push rod structure figure；
Fig. 3 is the utility model guide pipe structure chart；
Fig. 4 is the utility model supporting tube structure figure；
Fig. 5 is the utility model gear bush structure chart；
Fig. 6 is the utility model understructure figure.
Wherein, the specific structure of each component are as follows:
The top 1-, the first rivet of 2-, 3- interconnecting piece, 4- minor leading screw, 5- big wire role, 6- mandril, the first sliding block of 6.1-, 7- are led
Xiang Guan, 7.1- first sliding groove, the second sliding block of 7.2-, 8- support tube, 8.1- second sliding slot, 8.2- third sliding slot, 9- shell, 10-
Pedestal, the second rivet of 11-, 12- thrust bearing, 13- first bevel gear, 14- second bevel gear, 15- gear shaft, 16- gear shaft
Set, 16.1- elastic piece, 16.2- boss, 16.3- limit point, 17- handle.
Specific embodiment
In order to know more about the technology contents of the utility model, spy lifts specific embodiment and institute's accompanying drawings is cooperated to be described as follows.
It is described with reference to the various aspects of the utility model in the disclosure, shown in the drawings of the implementation of many explanations
Example.It is not intended to cover all aspects of the utility model for embodiment of the disclosure.It should be appreciated that a variety of structures presented hereinbefore
Think and embodiment, and those of describe in more detail below design and embodiment can in many ways in any one
Implement, this is because conception and embodiment disclosed in the utility model are not limited to any embodiment.In addition, this is practical
Novel disclosed some aspects can be used alone, or with it is disclosed by the utility model it is otherwise it is any it is appropriately combined come
It uses.
Based in the prior art, inside screw jack in the sliding block sliding slot adaptation scheme of lifting structure, sliding block processing exists
Inside lifting tube, it has not been convenient to factory process；The support construction of biggish cavity is set on the outside of screw jack, increases jack
Volume and weight；And the gear transmission structure inside jack is since cooperation elasticity is indefinite, stuck frequent occurrence, using not
Just；Based on the above issues, the utility model is intended to provide a kind of screw jack, easy to process, realizes the elastic connecting between gear
Touching.
Below with reference to attached, shown in figure, the screw jack of the utility model is further specifically introduced.
As shown in connection with fig. 1, a kind of screw jack, including handle 17, pedestal 10, the support tube 8 of both ends open, connection bottom
The shell 9 of seat 10 and support tube 8, the thrust bearing 12 and thrust bearing being fixedly connected with the bearing bore of 9 upper surface of pedestal setting
The first bevel gear 13 of 12 adaptation connections, guide pipe 7, mandril 6, the big wire role 5, minor leading screw being successively set on inside support tube 8
4, the second cone tooth for being arranged in outside support tube 8, being connected to the top component at 6 top of mandril and being partially installed on inside shell 9
Wheel portion.
It is specifically, the top component includes that top 1 and interconnecting piece 3, interconnecting piece are set as the cylindrical shape of both ends open
Structure, described columnar structured one end and top 1 are riveted by the first rivet 2, and the other end is set in 6 top of mandril, with mandril 6
Interference fit, top 1 are used for load-bearing weight.
In conjunction with shown in Fig. 2 to Fig. 4,4 bottom of minor leading screw is fixed on first bevel gear 13, and big wire role 5 is set in small silk
4 outside of bar, minor leading screw 4 and big wire role 5 form step of threads pair；The mandril 6 is set in 5 outside of big wire role, mandril 6 and big silk
Bar 5 forms second level screw thread pair；The guide pipe 7 is set in 6 outside of mandril, and the outer wall of mandril 6 forms the first sliding block of protrusion
6.1, it offers on the outside of guide pipe 7 from the first sliding groove 7.1 that end longitudinally extends thereon, 7.1 bottom of first sliding groove, which is no more than, leads
To 7 lower end surface of pipe, and first sliding groove 7.1 is adapted to the first sliding block 6.1；The support tube 8 is set in 7 outside of guide pipe, guiding
The outer wall of pipe 7 forms the second sliding block 7.2 of protrusion, and the longitudinally extended from end thereon is offered on the outside of the support tube 8
Two sliding slots 8.1 and third sliding slot 8.2, the second sliding slot 8.1 and 8.2 bottom of third sliding slot are no more than 8 lower end surface of support tube,
And first sliding groove 7.1 and second sliding slot 8.1 are adapted to, the second sliding block 7.2 and third sliding slot 8.2 are adapted to.
Wherein, the first sliding block 6.1 and the second sliding block 7.2 are separately positioned on the outside of mandril 6 and guide pipe 7, processing compared with
It is more succinct in the prior art, and sliding block and sliding slot are an integral molding structure, and the production efficiency of part greatly promotes, part
Dimensionally stable；In embodiment shown in the drawings, support tube 8 and shell 9 are used and are welded and fixed；In some embodiments, by support tube 8
It is directly processed with shell 9 also by integrated molding mode, further increases part processing efficiency；Also, support tube 8, guide pipe 7
It cooperates with mandril 6, so that jack overall structure is more compact, volume is smaller.
Further combined with shown in Fig. 1, the second bevel gear portion includes second bevel gear 14 and the tooth that is axially arranged along it
Wheel shaft 15, the second bevel gear 14 are adapted to transmission with first bevel gear 13；9 side of shell is provided with opening, the tooth
15 part of wheel shaft is piercing in opening, and the handle 17 is connected to the part that gear shaft 15 is piercing in opening.
As shown in connection with fig. 5, the utility model is also mainly used for solving the stuck of gear drive process appearance, specifically,
The shell 9 is provided with the gear bush 16 for being set in 15 outside of gear shaft, the gear bush 16 with 15 junction of gear shaft
Outer wall is open relatively fixed with shell 9；The gear bush 16 is provided with abutting close to the end border of second bevel gear 14
The elastic construction of two bevel gears, 14 end face, and elastic construction is in compressive state always.16 outer wall of gear bush and shell 9
The relatively-stationary mode that is open includes that screw is fixed, is screwed and is interference fitted.
In embodiment shown in the drawings, the elastic construction is set as the elastic piece expanded on the outside of gear bush 16
16.1, the setting of 16.1 border of elastic piece is in 16 end of gear bush, since elastic piece 16.1 is to expanding on the outside of gear bush 16, because
This uses when fixing mode relatively of interference fit when gear bush 16 and the opening of shell 9, and elastic piece 16.1 can be fastened on always
The inside of shell 9 does not emerge in shell 9；Several lack also is equidistantly provided in embodiment shown in the drawings, on elastic piece 16.1
Mouthful, materials'use is advantageously reduced, production cost is reduced.
Plastic gear axle sleeve provided by the utility model connect simplicity with casing assembly reliably, by being molded, production effect
Rate is high.There is good self-lubricating effect between gear bush 16 and second bevel gear 14, so that gear drive process is not likely to produce
Stuck phenomenon, it is more compact that elastic construction connect second bevel gear 14 with first bevel gear 13, eliminates gear bush 16,
Gap between 13 three of two bevel gears 14 and first bevel gear makes do not have noise generation between gear.
In section Example, gear bush 16 is plastic part, using being molded, high production efficiency, and in gear shaft
It covers 16 outer walls and is provided with boss 16.2, boss 16.2 and shell 9 are interference fitted, the opposite position of fixed gear shaft set 16 and shell 9
It sets；Furthermore 16 outer wall of gear bush is additionally provided with limit point 16.3, and limit point 16.3 is located at the portion that gear shaft 15 is piercing in shell 9
Point；Described 16.3 one end of limit point abuts boss 16.2, and is higher than boss 16.2, and limit point 16.3 is used for boss 16.2 and shell
The limit of 9 cooperations, prevents gear bush 16 from sliding into 9 inner cavity of shell in use.
As shown in connection with fig. 6, the shell 9 is riveted using the corner of the second rivet 11 and pedestal 10 and is fixed；Some embodiments
In, the shell 9 is also used with pedestal 10 and is welded and fixed；Pedestal 10 can be effectively prevented jack with the fixation of shell 9 and use
There is particulate dust to drop into transmission gear in the process.
The screw jack of the utility model, by reducing the difficult processing of jack components to sliding block and sliding slot improvement
Degree, by adding the gear bush 16 with elastic construction on gear shaft 15, so that first bevel gear 13 and second bevel gear
Elastic Contact between 14 solves to occur between first bevel gear 13 and second bevel gear 14 stuck, environment of the reduction in vibration
The noise that middle gear transmission generates, extends the service life of jack.
Although the utility model has been disclosed with preferred embodiment as above, so it is not intended to limit the utility model.This reality
It is without departing from the spirit and scope of the utility model, each when that can make with novel those of ordinary skill in the art
Kind changes and retouches.Therefore, the protection scope of the utility model is subject to view those as defined in claim.
Claims (9)
1. a kind of screw jack, which is characterized in that including handle, pedestal, the support tube of both ends open, connection pedestal and support
The shell of pipe, with pedestal upper surface setting bearing bore be fixedly connected thrust bearing, first connect is adapted to thrust bearing
Bevel gear, the guide pipe being successively set on inside support tube, mandril, big wire role, minor leading screw are arranged outside support tube, connection
Top component at the top of mandril and the second bevel gear portion for being partially installed on interior of shell；
The top component includes that top and interconnecting piece, interconnecting piece are set as the columnar structured of both ends open, the cylindrical shape
Structure one end and top rivet, and the other end is set at the top of mandril, are interference fitted with mandril；
The minor leading screw bottom is fixed on first bevel gear, and big wire role is set on the outside of minor leading screw, and minor leading screw is formed with big wire role
Step of threads pair；The mandril is set on the outside of big wire role, and mandril and big wire role form second level screw thread pair；The guide pipe is arranged
On the outside of mandril, the outer wall of mandril forms the first sliding block of protrusion, is offered on the outside of guide pipe from end thereon and is longitudinally extended
First sliding groove, first sliding groove bottom is no more than guide pipe lower end surface, and first sliding groove is adapted to the first sliding block；The support tube
It is set on the outside of guide pipe, the outer wall of guide pipe forms the second sliding block of protrusion, is offered on the outside of the support tube from thereon
The second sliding slot and third sliding slot that end longitudinally extends, the second sliding slot and third sliding slot bottom are no more than support tube lower end
Face, and first sliding groove and second sliding slot adaptation, the second sliding block and third sliding slot adaptation；
The second bevel gear portion includes second bevel gear and the gear shaft that is axially arranged along it, the second bevel gear and first
Bevel gear adaptation transmission；The shell side is provided with opening, and the gear shaft portion is piercing in opening, and the handle is connected to
Gear shaft is piercing in the part of opening.
2. screw jack according to claim 1, which is characterized in that the shell and gear shaft connection place are provided with set
The gear bush being located on the outside of gear shaft, the gear bush outer wall and shell aperture are relatively fixed；The gear bush is close
The end border of second bevel gear is provided with the elastic construction for abutting second bevel gear end face, and elastic construction is in compression always
State.
3. screw jack according to claim 2, which is characterized in that the gear bush outer wall and shell aperture interference
Cooperation, and elastic construction is set as the elastic piece expanded on the outside of gear bush.
4. screw jack according to claim 2, which is characterized in that the gear bush outer wall is provided with boss, convex
Platform and shell aperture are interference fitted.
5. screw jack according to claim 4, which is characterized in that the gear bush outer wall is provided with limit point,
Limit point is located at the part that gear shaft is piercing in shell aperture；Described limit point one end abuts boss, and is higher than boss, limit point
Limit for boss and shell cooperation.
6. according to the described in any item screw jack of claim 2-5, which is characterized in that the gear bush is plastic part.
7. screw jack according to claim 1, which is characterized in that the support tube and shell are integrally formed.
8. screw jack according to claim 1, which is characterized in that the shell and pedestal rivet.
9. screw jack according to claim 1, which is characterized in that the shell and tube chamber welds with base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821861637.XU CN209396816U (en) | 2018-11-13 | 2018-11-13 | A kind of screw jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821861637.XU CN209396816U (en) | 2018-11-13 | 2018-11-13 | A kind of screw jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209396816U true CN209396816U (en) | 2019-09-17 |
Family
ID=67879772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821861637.XU Withdrawn - After Issue CN209396816U (en) | 2018-11-13 | 2018-11-13 | A kind of screw jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209396816U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109399485A (en) * | 2018-11-13 | 2019-03-01 | 南通市通润汽车零部件有限公司 | A kind of screw jack |
-
2018
- 2018-11-13 CN CN201821861637.XU patent/CN209396816U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109399485A (en) * | 2018-11-13 | 2019-03-01 | 南通市通润汽车零部件有限公司 | A kind of screw jack |
| CN109399485B (en) * | 2018-11-13 | 2024-06-07 | 南通市通润汽车零部件有限公司 | Screw jack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190917 Effective date of abandoning: 20240607 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190917 Effective date of abandoning: 20240607 |