CN213326502U

CN213326502U - Screw jack

Info

Publication number: CN213326502U
Application number: CN202021906236.9U
Authority: CN
Inventors: 倪国强; 朱永泉
Original assignee: HANGZHOU LANHAN MACHINERY CO LTD
Current assignee: HANGZHOU LANHAN MACHINERY CO LTD
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-06-01
Anticipated expiration: 2030-09-04

Abstract

The utility model discloses a screw jack, including base, fixed sleeve, gear sleeve, elevating gear, lifting sleeve and rotary device, fixed sleeve fixed connection is in directly over the base, gear sleeve fixed connection is in the fixed sleeve lower half left end, lifting sleeve threaded connection is in fixed sleeve inside axle center department, rotary device sets up at the gear sleeve right-hand member, elevating gear includes lifting screw, driven gear, driving gear, ratchet one, bearing and gear pole, the driving gear cup joints at the gear pole left end and with driven gear intermeshing; the utility model discloses in, can be in departments such as factory, transportation as vehicle repair and other work such as jack-up, support, small effect is big, conveniently carries, jack convenient operation, and rotatory rotary device can directly go up and down the operation, has the spacing warning line in the sleeve moreover, and steady thickening base can carry out stationary work simultaneously.

Description

Screw jack

Technical Field

The utility model relates to a jack technical field especially relates to a screw jack.

Background

The jack is light and small lifting equipment which uses a rigid lifting piece as a working device and lifts a heavy object in a small stroke through a top bracket or a bottom supporting claw, and the jack has two types of mechanical type and hydraulic type. The mechanical jack has two types of rack type and screw type, and is mainly used for vehicle repair, other hoisting and supporting in factories, mines, transportation and other departments. At present, the screw jack used in the prior art adopts a mechanical principle, a handle is pulled repeatedly, a large bevel gear is driven by a bevel pinion, and a lifting screw rod rotates in a nut, so that a lifting sleeve is lifted or descended along a fixed sleeve, the purpose of lifting a heavy object by a lifting piece is achieved, the structure is light, firm, flexible and reliable, and the screw jack can be carried and operated by one person. However, the jacking working surfaces of the jacking pieces of the screw jacks used in the prior art are horizontal planes, and the contact surfaces of the jacking objects contacting with the jacking pieces often have a certain inclination angle, so that the jack is easy to deflect and tilt or cause the phenomenon of 'seizure' of the lifting screw and the nut in the use process, and the jack has the defects of troublesome operation and inconvenient use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems, a screw jack is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a screw jack comprises a base, a fixed sleeve, a gear sleeve, a lifting device, a lifting sleeve and a rotating device, wherein the fixed sleeve is fixedly connected right above the base, the gear sleeve is fixedly connected at the left end of the lower half part of the fixed sleeve, the lifting sleeve is in threaded connection with the axle center inside the fixed sleeve, the rotating device is arranged at the right end of the gear sleeve, the lifting device comprises a lifting screw rod, a driven gear, a driving gear, a ratchet wheel I, a bearing and a gear rod, the bearing is arranged at the axle center at the bottom of the lifting sleeve, the driven gear is arranged right above the bearing, the driving gear is sleeved at the left end of the gear rod and is mutually meshed with the driven gear, the ratchet wheel is sleeved at the right end of the gear rod, the lifting screw rod is in threaded connection with the inner axle center of the driven gear, the rotating device comprises a pull head, a second ratchet wheel, a handle and a rotating sleeve, wherein the pull head is arranged above the second ratchet wheel, the rotating sleeve is arranged at the left end of the second ratchet wheel, and the handle is fixedly connected to the right end of the outer surface of the rotating sleeve.

As a further description of the above technical solution:

the rear surface of the fixed sleeve is fixedly connected with a handle, and the two reinforcing ribs are fixedly connected to the outer surface of the fixed sleeve.

As a further description of the above technical solution:

the top end of the fixed sleeve is provided with a key pin, and the top end of the key pin is provided with a top cover.

As a further description of the above technical solution:

gear sleeve fixed connection be in fixed sleeve the latter half right-hand member, gear pole run through to gear sleeve is inside and with driving gear threaded connection.

As a further description of the above technical solution:

an alloy nut is in threaded connection with the lower half portion of the lifting screw rod, close to the driven gear.

As a further description of the above technical solution:

the top cover is a disk member and has an annular thread on its upper surface.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. this novel screw jack application range is wide, can support at the building, the bridge is built, the factory and mine, departments such as transportation are as vehicle repair and other jack-ups, work such as support, this screw jack uses and need not be retrained by the atress direction, small effect is big, this screw jack is small, and conveniently carry, and this jack is in the convenient operation of using, rotatory rotary device can directly go up and down the operation, and have the spacing warning line in the sleeve, the smart steel ratchet combination of tight interlock, while steady thickening base, can carry out stationary work.

Drawings

Fig. 1 shows a schematic structural diagram of a rotary jack provided according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating a front structure of a jack provided according to an embodiment of the present invention;

fig. 3 shows a schematic structural view of a lifting sleeve face provided according to an embodiment of the present invention;

fig. 4 shows a schematic structural diagram of a lifting device provided according to an embodiment of the present invention.

Illustration of the drawings:

1. a base; 2. reinforcing ribs; 3. fixing the sleeve; 4. a key pin; 5. a handle; 6. a gear sleeve; 7. a top cover; 8. a lifting device; 801. a lifting screw; 802. a driven gear; 803. a driving gear; 804. a first ratchet wheel; 805. a bearing; 806. a gear lever; 9. a lifting sleeve; 10. a rotating device; 1001. a slider; 1002. A second ratchet wheel; 1003. a grip; 1004. rotating the sleeve; 11. alloy nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

specifically, as shown in fig. 1-4, a screw jack includes a base 1, a fixed sleeve 3, a gear sleeve 6, a lifting device 8, a lifting sleeve 9 and a rotating device 10, wherein the fixed sleeve 3 is fixedly connected right above the base 1, the gear sleeve 6 is fixedly connected to the left end of the lower half portion of the fixed sleeve 3, the lifting sleeve 9 is in threaded connection with the inner axis of the fixed sleeve 3, the rotating device 10 is disposed at the right end of the gear sleeve 6, and the screw jack is characterized in that the lifting device 8 includes a lifting screw 801, a driven gear 802, a driving gear 803, a ratchet gear 804, a bearing 805 and a gear rod 806, the bearing 805 is disposed at the bottom axis of the lifting sleeve 9, the driven gear 802 is disposed right above the bearing 805, the driving gear 802 is sleeved at the left end of the gear rod 806 and is engaged with the driven gear 803, the ratchet gear 804 is sleeved at the right end of the gear rod 806, the lifting screw, the rotating device 10 comprises a pull head 1001, a second ratchet 1002, a handle 1003 and a rotating sleeve 1004, wherein the pull head 1001 is arranged at the upper left of the second ratchet 1002, the rotating sleeve 1004 is arranged at the left end of the second ratchet 1002, and the handle 1003 is fixedly connected to the right end of the outer surface of the rotating sleeve 1004.

Specifically, as shown in fig. 1, a handle 5 is fixedly connected to the rear surface of the fixing sleeve 3, and two reinforcing ribs 2 are fixedly connected to the outer surface of the fixing sleeve 3.

Specifically, as shown in fig. 1, a key pin 4 is arranged at the top end of the fixed sleeve 3, a top cover 7 is arranged at the top end of the key pin 4, and the top cover 7 is movably connected to the top end of the fixed sleeve 3 through the key pin 4.

Specifically, as shown in fig. 4, the gear sleeve 6 is fixedly connected to the right end of the lower half portion of the fixed sleeve 3, and the gear rod 806 penetrates through the gear sleeve 6 and is in threaded connection with the driving gear 803.

Specifically, as shown in fig. 2, an alloy nut 11 is threadedly connected to a lower half portion of the lifting screw 801 near the driven gear 802.

The working principle is as follows: the screw jack comprises a base 1, a fixed sleeve 3, a gear sleeve 6, a lifting device 8, a lifting sleeve 9 and a rotating device 10, wherein a driving gear 802 is sleeved at the left end of a gear rod 806 and is meshed with a driven gear 803, a ratchet wheel 804 is sleeved at the right end of the gear rod 806, a lifting screw 801 is in threaded connection with the inner axis of the driven gear 802, the rotating device 10 comprises a pull head 1001, a ratchet wheel 1002, a handle 1003 and a rotating sleeve 1004, when the screw jack is required to work, the screw jack can be placed at a working position, the rotating device 10 is rotated to look up the clockwise and anticlockwise rotation mode to lift the position of the lifting device 8, after the observation is finished, the handle 1003 is rotated to lift a top cover 7 to the top end position of the fixed sleeve 3, then the pull head 1001 is rotated to fix the lifting device 8 and the rotating device 10, the handle 1003 is rotated to jack the top cover 7 to the bottom, then the rotating handle is inserted into the rotating sleeve 1004, the rotating handle is rotated to continuously lift the top cover 7, so that the object is continuously jacked up, when the lifting screw 801 rises to the limiting warning line, the lifting screw cannot lift any more, the jack is prevented from exceeding the working range, the jack is prevented from being damaged, after the work is finished, the rotating handle is pulled out, the puller 1001 is pulled upwards, the puller is rotated by 180 degrees for resetting, and the rotating ratchet wheel II 1002 is rotated to reduce the lifting device 8 to the minimum.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A screw jack comprises a base (1), a fixed sleeve (3), a gear sleeve (6), a lifting device (8), a lifting sleeve (9) and a rotating device (10), wherein the fixed sleeve (3) is fixedly connected right above the base (1), the gear sleeve (6) is fixedly connected at the left end of the lower half part of the fixed sleeve (3), the lifting sleeve (9) is in threaded connection with the inner axle center of the fixed sleeve (3), the rotating device (10) is arranged at the right end of the gear sleeve (6), the screw jack is characterized in that the lifting device (8) comprises a lifting screw (801), a driven gear (802), a driving gear (803), a ratchet wheel I (804), a bearing (805) and a gear rod (806), the bearing (805) is arranged at the axle center of the bottom of the lifting sleeve (9), the driven gear (802) is arranged right above the bearing (805), the driving gear (803) is sleeved at the left end of the gear rod (806) and is meshed with the driven gear (802), the ratchet I (804) is sleeved at the right end of the gear rod (806), the lifting screw (801) is in threaded connection with the inner axis of the driven gear (802), the rotating device (10) comprises a pull head (1001), a ratchet II (1002), a handle (1003) and a rotating sleeve (1004), the pull head (1001) is arranged at the upper left of the ratchet II (1002), the rotating sleeve (1004) is arranged at the left end of the ratchet II (1002), and the handle (1003) is fixedly connected at the right end of the outer surface of the rotating sleeve (1004).

2. A screw jack according to claim 1, wherein the rear surface of the fixing sleeve (3) is fixedly connected with a handle (5), and the two reinforcing ribs (2) are fixedly connected with the outer surface of the fixing sleeve (3).

3. A screw jack according to claim 1, wherein the fixing sleeve (3) is provided with a key pin (4) at the top end thereof, and the key pin (4) is provided with a top cover (7) at the top end thereof.

4. A screw jack according to claim 1, wherein the gear sleeve (6) is fixedly connected to the right end of the lower half of the fixed sleeve (3), and the gear rod (806) penetrates into the gear sleeve (6) and is in threaded connection with the driving gear (803).

5. A screw jack according to claim 1, wherein the lower half of the lifting screw (801) is threadedly connected to an alloy nut (11) adjacent the driven gear (802).

6. A screw jack according to claim 3, wherein the top cover (7) is a disc-shaped member with an annular thread on its upper surface.