CN203922580U - A kind of simple and easy lifting screw - Google Patents

A kind of simple and easy lifting screw Download PDF

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Publication number
CN203922580U
CN203922580U CN201420269313.2U CN201420269313U CN203922580U CN 203922580 U CN203922580 U CN 203922580U CN 201420269313 U CN201420269313 U CN 201420269313U CN 203922580 U CN203922580 U CN 203922580U
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China
Prior art keywords
bearing
pillar
bevel gear
finishing bevel
gear cuter
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CN201420269313.2U
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Chinese (zh)
Inventor
叶培玉
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NINGBO TIANYI SHAFT CO Ltd
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NINGBO TIANYI SHAFT CO Ltd
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Abstract

The utility model discloses a kind of simple and easy lifting screw, comprise square casing, initiative part and top board, bottom half is provided with first bearing seat and some second bearing seats, in first bearing seat, be provided with first bearing, in second bearing seat, be provided with second bearing, first bearing is connected with first finishing bevel gear cuter, second bearing is connected with first pillar, on first pillar, be provided with second finishing bevel gear cuter, the rotation of working in coordination of first finishing bevel gear cuter and second finishing bevel gear cuter, first pillar is provided with negative thread, top board is provided with some second pillars, on second pillar, be provided with outside thread, first pillar and second pillar link together by screw thread fit, on initiative part, be connected with the third bearing, on the sidewall of casing, be provided with the third bearing seat, the third bearing is arranged in the third bearing seat, on initiative part, be provided with the third finishing bevel gear cuter, the third finishing bevel gear cuter coordinates rotation with first finishing bevel gear cuter.Compared with prior art, the utility model is simple in structure, low cost of manufacture, can support the weight that weight is larger and but not damage the surface of weight, and conveniently move good portability.

Description

A kind of simple and easy lifting screw
Technical field
The utility model belongs to hydraulic technique field, relates in particular to a kind of simple and easy lifting screw.
Background technology
Jack is a kind of lifting the simplest highly little weight-lifting equipment.Jack is divided into two kinds of mechanical jack and hydraulic jacks, and principle is had nothing in common with each other.Principle, hydraulic jack based on principle be pascal's principle, that is: liquid pressure is everywhere consistent, like this, in the system of balance, above smaller piston, applied pressure is smaller, and on large piston, applied pressure is also larger, can keep like this static of liquid.So by the transmission of liquid, can obtain the different pressure on different ends, so just can reach the object of a conversion.We common to hydraulic jack be exactly to have utilized this principle to reach the transmission of power.Mechanical jack adopts theory of machines, and back and forth to pull handle, pusher dog is arranged the revolution of ratchet gap, and bevel pinion drives large bevel gear, makes the rotation of weight lifting screw rod, hoists or declines, and reach the function of lifting pulling force thereby jacking sleeve is obtained.But it is simple and easy to be not so good as hydraulic jack.
Mechanical jack has again rack-and-pinion and spiral two kinds, because hoisting capacity is little, operation effort, general only for flight-line maintenance work, repair in bridge process inapplicable.Fluid pressure type jack structure compactness, stable working, has self-locking action, therefore use extensively.Its shortcoming is that lifting is highly limited, and lifting velocity is slow.Jack is mainly used in the department such as factories and miness, communications and transportation as work such as Mechanical Help and other lifting, supports.Its structure is firm, flexibility and reliability lightly, and a people is portability and operation.
Rack-jack: lift heavy thing by lever and gear driven tooth bar top by manpower.Hoisting capacity is generally no more than 20 tons, can support for a long time weight, and the place that is mainly used in operating condition inconvenience maybe needs the occasion of the claw lifting heavy that utilizes bottom, as railway rail lifting operation.
Lifting screw: by screw pair transmission, screw rod or ut socket are lifted part as top by manpower.Common lifting screw is supported weight by screw thread self-locking effect, simple structure, but driving efficiency is low, and return is slow.Without self-locking action, but drg loosen the brake device is housed from the screw thread that falls lifting screw, weight is fast-descending voluntarily, shorten return trip time, but this jack structure is more complicated.Lifting screw can be supported weight for a long time, and the biggest lifting capacity has reached 100 tons, applies wider.Bottom is loaded onto after horizontal screw bolt, can also make weight do small distance traversing.
Hydraulic jack: by manpower or driven by power Hydraulic Pump, by hydraulic efficiency pressure system transmission, lift part as top with cylinder body or piston.Hydraulic jack can be divided into integral type and separation type.All-in-one-piece pump and hydraulic actuating cylinder join together; The pump of separation type separates with hydraulic actuating cylinder, and centre is connected with high pressure hose.Hydraulic jack compact conformation, steadily jacking weight, hoisting capacity maximum reaches 1000 tons, 1 meter of stroke, driving efficiency is higher, therefore application is wider; But easy oil leakage, should not support weight for a long time.As long-term support need be selected self-locking jack, lifting screw and hydraulic jack are further to reduce height of contour or increase top to lift distance, can make multi-stage telescopic.Hydraulic jack, except above-mentioned basic version, can repack climbing form jack, hydaulic lift platform, stretching machine etc. into by same principle, for various special construction occasions.
In sum, current jack respectively has quality, and still common feature is, needed part is more, and manufacturing cost is higher.
Summary of the invention
The utility model is for deficiency of the prior art, a kind of simple and easy lifting screw is provided, low cost of manufacture, and than the jack with class on market, there is larger bearing surface, can support the weight that weight is larger, and can not damage the surface of weight, being applicable to effects on surface has the supported weight of requirement.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals: a kind of simple and easy lifting screw, comprise square casing, initiative part and top board, described bottom half is provided with first bearing seat and some second bearing seats, in described first bearing seat, be provided with first bearing, in described second bearing seat, be provided with second bearing, described first bearing is connected with first finishing bevel gear cuter, described second bearing is connected with first pillar, on described first pillar, be provided with second finishing bevel gear cuter, the rotation of working in coordination of described first finishing bevel gear cuter and described second finishing bevel gear cuter, described first pillar is provided with negative thread, described top board is provided with some second pillars, on described second pillar, be provided with outside thread, described first pillar and described second pillar link together by screw thread fit, on described initiative part, be connected with the third bearing, on the sidewall of described casing, be provided with the third bearing seat, described the third bearing is arranged in described the third bearing seat, on described initiative part, be provided with the third finishing bevel gear cuter, described the third finishing bevel gear cuter coordinates rotation with described first finishing bevel gear cuter, the end that described initiative part is positioned at outside described casing is provided with hexagon ring.
Described top board bottom is provided with scale, is provided with some scales on described scale, and described scale lower end is provided with warning-sign, and described warning-sign is less than the length numerical value of described second pillar to the distance values of the upper end edge line of described scale.
The quantity of the quantity of described second bearing seat and described second pillar equates.
The quantity of described second bearing seat is four.
On described casing, be provided with on the left and right sidewall of sidewall of described initiative part and be provided with handle.
The utility model is simple in structure, low cost of manufacture, than the jack with class on market, has larger bearing surface, can support the surface that weight that weight is larger does not but damage weight, being applicable to effects on surface has the supported weight of requirement, and convenient mobile, good portability.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model generalized section.
Fig. 3 is the utility model drive mechanism schematic diagram.
Fig. 4 is the utility model scale schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the utility model is described in further detail: as shown in Figures 1 to 4, a kind of simple and easy lifting screw, comprise square casing 1, initiative part 2 and top board 5, described casing 1 bottom is provided with first bearing seat 11 and some second bearing seats 12, in described first bearing seat 11, be provided with first bearing 13, in described second bearing seat 12, be provided with second bearing 14, described first bearing 13 is connected with first finishing bevel gear cuter 3, described second bearing 14 is connected with first pillar 4, on described first pillar 4, be provided with second finishing bevel gear cuter 41, the rotation of working in coordination of described first finishing bevel gear cuter 3 and described second finishing bevel gear cuter 41, described first pillar 4 is provided with negative thread, described top board 5 is provided with some second pillars 51, on described second pillar 51, be provided with outside thread, described first pillar 4 and described second pillar 51 link together by screw thread fit, on described initiative part 2, be connected with the third bearing 22, on the sidewall of described casing 1, be provided with the third bearing seat, described the third bearing 22 is arranged in described the third bearing seat, on described initiative part 2, be provided with the third finishing bevel gear cuter 21, described the third finishing bevel gear cuter 21 coordinates rotation with described first finishing bevel gear cuter 3, the end that described initiative part 2 is positioned at outside described casing is provided with hexagon ring 23.
Described top board 5 bottoms are provided with scale 52, on described scale, 52 are provided with some scales 521, described scale 52 lower ends are provided with warning-sign 522, and described warning-sign 522 is less than the length numerical value of described second pillar 51 to the distance values of the upper end edge line of described scale 52.
The quantity of the quantity of described second bearing seat 12 and described second pillar 51 equates.
The quantity of described second bearing seat 12 is four.
On described casing 1, be provided with on the left and right sidewall of sidewall of described initiative part 2 and be provided with handle 6.
The end of the rotary bar coordinating with the utility model is set to outer-hexagonal, is inserted into hexagon ring 23, just can rotate initiative part 2.Initiative part 2 rotates, and is the third finishing bevel gear cuter 21 and rotates, and the third finishing bevel gear cuter 21 drives the first finishing bevel gear cuter 3 coordinating with it to rotate, and then, the second finishing bevel gear cuter 41 coordinating with first finishing bevel gear cuter 3 also can rotate.Because second finishing bevel gear cuter 41 is arranged on first pillar 4, so first pillar 4 also rotates thereupon.And first pillar 4 and second pillar 51 link together by screw thread fit, so in the time that first pillar 4 rotates, due to the effect of screw thread, second pillar 51 can be risen.Like this, top board on second pillar 51 is just by jack-up.The utility model is positioned over and needs supported object below, then rotate initiative part 2, then pass through above-mentioned process, supported object is just by jack-up, and the utility model has been realized the function of jack.
Because the jacking part of general jack is on the market mostly cylinder, in the time that the weight ratio of supported object is larger, because the area of contact of jacking part and supported object is little, very huge of the pressure that now this contact surface bears, the surface of supported object will be damaged.In order to protect the surface of supported object, just need to reduce this pressure, and the best way is exactly enlarge active surface.General method is all on jacking part, to prevent a high-intensity pressing plate, is used for bearing this pressure.But, remove in this way jack-up supported object, can cause entirety unstable, likely can make supported object tilt.Finally may cause supported object to fall from jack.When serious, also can thoroughly damage supported object, even overwhelm operator.This method has very large risk.
The utility model, adopts top board 5, and below top board, is provided with 4 second pillars 51.No matter be state of kinematic motion or quiescence by 4 definite planes, all very stable, the utility model is exactly this feature that all adopts four wheels with reference to the car of auto trade manufacture, can ensure that supported object can be by stable jack-up, and some above-mentioned accidents do not occur, thereby ensure safety.
The utility model, is fixed on by top board the height needing thereby rely on screw thread self-locking to realize.Screw thread self-locking refers in load and temperature change and when little, be threaded and can automatically do not get loose.Condition of self-locking is the equivalent friction angle that lead angle is less than screw pair.In order to improve self-locking property, screw thread most preferably is triangle fine thread.Adopt screw thread to also have an advantage, in the time that supported object need to decline, can decline slowly, prevent the too fast impact supported object of reduction of speed, cause the surface of supported object damaged.And other jack, when decline, if need slow falling, needs strict control operation, if there is maloperation, will cause prompt drop, will damage supported object.
The utility model is also provided with scale 52, in the course of the work, can understand clearly supported object by the height of jack-up by scale 52, and handled easily person as required, regulates the jack-up height of supported object.On scale 52, be also provided with warning-sign 522, can prompting operation person, critical jack-up height of the present utility model.This can prevent excessive jack-up, thereby damages the utility model.
The utility model is also provided with handle 6 outward.Arrange like this, can carry easily this device, improve portable.
The utility model is simple in structure, low cost of manufacture, than the jack with class on market, has larger bearing surface, can support the surface that weight that weight is larger does not but damage weight, being applicable to effects on surface has the supported weight of requirement, and convenient mobile, good portability.

Claims (5)

1. a simple and easy lifting screw, comprise square casing (1), initiative part (2) and top board (5), it is characterized in that: described casing (1) bottom is provided with first bearing seat (11) and some second bearing seats (12), in described first bearing seat (11), be provided with first bearing (13), in described second bearing seat (12), be provided with second bearing (14), described first bearing (13) is connected with first finishing bevel gear cuter (3), described second bearing (14) is connected with first pillar (4), on described first pillar (4), be provided with second finishing bevel gear cuter (41), the rotation of working in coordination of described first finishing bevel gear cuter (3) and described second finishing bevel gear cuter (41), described first pillar (4) is provided with negative thread, described top board (5) is provided with some second pillars (51), on described second pillar (51), be provided with outside thread, described first pillar (4) and described second pillar (51) link together by screw thread fit, on described initiative part (2), be connected with the third bearing (22), on the sidewall of described casing (1), be provided with the third bearing seat, described the third bearing (22) is arranged in described the third bearing seat, on described initiative part (2), be provided with the third finishing bevel gear cuter (21), described the third finishing bevel gear cuter (21) coordinates rotation with described first finishing bevel gear cuter (3), the end that described initiative part (2) is positioned at outside described casing is provided with hexagon ring (23).
2. the simple and easy lifting screw of one according to claim 1, it is characterized in that: described top board (5) bottom is provided with scale (52), on described scale, (52) are provided with some scales (521), described scale (52) lower end is provided with warning-sign (522), and described warning-sign (522) is less than the length numerical value of described second pillar (51) to the distance values of the upper end edge line of described scale (52).
3. the simple and easy lifting screw of one according to claim 2, is characterized in that: the quantity of the quantity of described second bearing seat (12) and described second pillar (51) equates.
4. the simple and easy lifting screw of one according to claim 3, is characterized in that: the quantity of described second bearing seat (12) is four.
5. the simple and easy lifting screw of one according to claim 3, is characterized in that: on described casing (1), be provided with on the left and right sidewall of sidewall of described initiative part (2) and be provided with handle (6).
CN201420269313.2U 2014-05-26 2014-05-26 A kind of simple and easy lifting screw Active CN203922580U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420269313.2U CN203922580U (en) 2014-05-26 2014-05-26 A kind of simple and easy lifting screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420269313.2U CN203922580U (en) 2014-05-26 2014-05-26 A kind of simple and easy lifting screw

Publications (1)

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CN203922580U true CN203922580U (en) 2014-11-05

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106672851A (en) * 2017-02-22 2017-05-17 中国人民解放军91635部队 Portable lifting working platform
CN111232891A (en) * 2019-12-18 2020-06-05 龙门县森桥装饰工程有限公司 Lifting device for architectural decoration engineering construction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106672851A (en) * 2017-02-22 2017-05-17 中国人民解放军91635部队 Portable lifting working platform
CN111232891A (en) * 2019-12-18 2020-06-05 龙门县森桥装饰工程有限公司 Lifting device for architectural decoration engineering construction

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