CN201268565Y

CN201268565Y - Mobile jack screw

Info

Publication number: CN201268565Y
Application number: CNU2008201511292U
Authority: CN
Inventors: 朱善桃
Original assignee: Kunshan Lucky Sea Industrial Co Ltd
Current assignee: Kunshan Lucky Sea Industrial Co Ltd
Priority date: 2008-07-23
Filing date: 2008-07-23
Publication date: 2009-07-08
Anticipated expiration: 2018-07-23

Abstract

The utility model relates to a movable screw jack which comprises a casing (20), an upper base (10), a lower base (26) and a small handle (21), wherein a thrust bearing (8) is installed on the upper base (10), a threaded rod (5) is vertically arranged in the middle, a big bevel gear (7) is installed at the position where the lower part of the threaded rod (5) is connected with the thrust bearing (8), a pulley (24) is installed below the lower base (26), a movable handle (22) is installed on the casing (20), a jack lever connector (25) is installed on the small handle (21), and a jack lever (31) is connected with the jack lever connector (25) in a dismountable way. The utility model can bear the larger transverse overturning moment, and has convenient movement and safer and more reliable use.

Description

Portable lifting screw

Technical field

The utility model relates to a kind of jack, relates in particular to a kind of lifting screw.

Background technology

The small-sized weight-lifting equipment jack of heavy thing is lifted based on the manpower driving in the top, and the hoisting capacity scope is big, and the top is lifted and highly generally is no more than 400 millimeters, is widely used in overhaul of the equipments and installation.Mainly can be divided into 3 kinds of rank-and-pinion jack, lifting screw and hydraulic jacks by architectural feature.Wherein by the screw pair transmission, screw rod or ut socket are lifted part as the top to lifting screw by manpower.Common lifting screw is supported weight by the screw thread self-locking action, simple structure, but driving efficiency is low, and return is slow.Do not have self-locking action from the screw thread that falls lifting screw, drg is housed.The loosen the brake device, weight can descend voluntarily fast, shortens return trip time, but this jack structure is complicated.Lifting screw can be supported weight for a long time, and the biggest lifting capacity has reached 100 tons, uses wider.After horizontal screw bolt is loaded onto in the bottom, it is traversing to make weight make small distance, lift distance in order to reduce height of contour or to increase the top, also can make multi-stage telescopic, but existing jack is not very convenient when need move, and jack is easy to generate rollover when supporting than the weight body such as railway carriage.

Summary of the invention

Defectives such as technical problem to be solved in the utility model provides a kind of portable lifting screw, turns on one's side easily to solve in the prior art, and mobile inconvenience and dynamometry are difficult.

Technical scheme

A kind of portable lifting screw, comprise shell (20), upper bed-plate (10), lower bottom base (26) and miniature lever (21), described upper bed-plate (10) is gone up installed thrust bearing (8), the middle screw rod (5) of erectting, large bevel gear (7) is installed in the place that links to each other with thrust baring (8) in the bottom of screw rod (5), described large bevel gear (7) is by being contained in miniature lever (21) on the shell (20) by ratchet group (2), bevel pinion (3) drives, reversing shaft (23) is housed on the described ratchet group (2), the circular nut (6) that one and screw rod (4) match is housed on the described large bevel gear (7), the outer jacking sleeve (4) that is with of circular nut (6), (1) is equipped with at jacking sleeve (4) and screw rod (5) top, pulley (24) is equipped with in described lower bottom base (26) below, moving handle (22) is housed on the shell (20), boosting-rod interface (25) is housed on the described miniature lever (21), and boosting-rod (31) and boosting-rod interface (25) removably connect.

On the end of described boosting-rod (31), torque-indicating wrench (27) is housed, indicator lamp (28) and calibrated disc (29) are housed on the torque-indicating wrench (27) away from miniature lever (21).

Described lower bottom base (26) comprises lower bracket (11) and base plate (13), and is fixing with reinforced rib (12) and base plate (13) at lower bracket (11).

Described base plate (13) is an oblong.

Beneficial effect

The utility model has increased lower bracket so that bear bigger horizontal capsizing moment; Be furnished with pulley and moving handle, be convenient to move; Join miniature lever, indicator lamp is arranged on the spanner, when its torsion reached the formulation value, indicator lamp was bright, showed that the power of jacking reaches requirement, used more safe and reliable.

Description of drawings

Fig. 1 is an external structure scheme drawing of the present utility model;

Fig. 2 is an inner structure scheme drawing of the present utility model;

Fig. 3 is torque-indicating wrench and boosting-rod structural representation;

Scheme drawing when Fig. 4 moves for the utility model;

Scheme drawing when Fig. 5 uses for the utility model.

The specific embodiment

Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.

Embodiment 1

A kind of portable lifting screw, comprise shell 20, upper bed-plate 10, lower bottom base 26 and miniature lever 21, installed thrust bearing 8 on the described upper bed-plate 10, screw rod 5 of middle setting, large bevel gear 7 is installed in the place that links to each other with thrust baring 8 in the bottom of screw rod 5, described large bevel gear 7 is by being contained in miniature lever 21 on the shell 20 by ratchet group 2, bevel pinion 3 drives, on the described ratchet group 2 reversing shaft 23 is housed, a circular nut 6 that matches with screw rod 4 is housed on the described large bevel gear 7, the circular nut 6 outer jacking sleeves 4 that are with, be equipped with 1 at jacking sleeve 4 and screw rod 5 tops, pulley 24 is equipped with in described lower bottom base 26 belows, moving handle 22 is housed on the shell 20, on the described miniature lever 21 boosting-rod interface 25 is housed, boosting-rod 31 and boosting-rod interface 25 removably connect; On the end of described boosting-rod 31, torque-indicating wrench 27 is housed, indicator lamp 28 and calibrated disc 29 are housed on the torque-indicating wrench 27 away from miniature lever 21; Described lower bottom base 26 comprises lower bracket 11 and oblong base plate 13, and is fixing at lower bracket 11 usefulness reinforced ribs 12 and oblong base plate 13

As shown in Figure 4, make this jack when moving this jack, promote by moving handle 22 then to the lopsidedness that pulley 24 is arranged,

As shown in Figure 5, this jack is placed on the below of the web beam 30 of train on request during use, notes keeping the straight and even of jack, and base plate 13 is placed on the train deck 40, long end is positioned at the outside, and base plate 13 length directions are perpendicular to the railway carriage direction, and every joint railway carriage is put four jacks.Reversing shaft 23 is pushed into hoisting position 360 degree to be rotated counterclockwise miniature lever 21 and makes jack take over a business 1 to rise to train web beam 30 and contact and hold out against; Boosting-rod 31 is inserted jack iron interface 25 places, behind the upper and lower crank motion 3～4 times, make jack continue to rise and hold out against train web beam 30, torque wrench 27 interfaces are inserted on the boosting-rod 31, upper and lower crank motion makes for 1～2 time jack continue to rise and holds out against the train web beam, calibrated disc 29 on torque wrench 27 is indicated to 150N*M and gets final product, this moment indicator lamp 28 bright these readings show this moment jack jack-up be equivalent to ten tons weight.Should note rise height when hoisting, as then show when red caution line occurring and worked the operational height that rises to this jack, can not hoist again, otherwise easily cause danger.

When withdrawing from jack, at first reversing shaft 23 is pushed into lowering position, then boosting-rod 31 is inserted jack iron interface 25 places, moving one to two time of reciprocating plate, take off boosting-rod 31,360 degree clockwise rotate and separate with vehicle web beam 30 after miniature lever 21 descends jack again, can take out jack; When there not being jack-up 10 ton hours, only need clockwise rotating this moment and can take out jack after miniature lever 21 descends jack.

Claims

1. portable lifting screw, comprise shell (20), upper bed-plate (10), lower bottom base (26) and miniature lever (21), described upper bed-plate (10) is gone up installed thrust bearing (8), the middle screw rod (5) of erectting, large bevel gear (7) is installed in the place that links to each other with thrust baring (8) in the bottom of screw rod (5), described large bevel gear (7) is by being contained in miniature lever (21) on the shell (20) by ratchet group (2), bevel pinion (3) drives, reversing shaft (23) is housed on the described ratchet group (2), the circular nut (6) that one and screw rod (4) match is housed on the described large bevel gear (7), the outer jacking sleeve (4) that is with of circular nut (6), (1) is equipped with at jacking sleeve (4) and screw rod (5) top, it is characterized in that: pulley (24) is equipped with in described lower bottom base (26) below, moving handle (22) is housed on the shell (20), boosting-rod interface (25) is housed on the described miniature lever (21), and boosting-rod (31) and boosting-rod interface (25) removably connect.

2. portable lifting screw as claimed in claim 1 is characterized in that: on the end of described boosting-rod (31) away from miniature lever (21) torque-indicating wrench (27) is housed, indicator lamp (28) and calibrated disc (29) are housed on the torque-indicating wrench (27).

3. portable lifting screw as claimed in claim 1 or 2 is characterized in that: described lower bottom base (26) comprises lower bracket (11) and base plate (13), and is fixing with reinforced rib (12) and base plate (13) at lower bracket (11).

4. portable lifting screw as claimed in claim 3 is characterized in that: described base plate (13) is an oblong.