CN111908361A

CN111908361A - Mechanical small jack

Info

Publication number: CN111908361A
Application number: CN202010865146.8A
Authority: CN
Inventors: 莫颖生; 李志锦; 谭志保; 梁刚; 邓本铭; 谭锐恒; 谢家安; 周圆; 温玉琦; 陈模生; 王年华
Original assignee: Guangdong Power Grid Co Ltd; Foshan Power Supply Bureau of Guangdong Power Grid Corp
Current assignee: Guangdong Power Grid Co Ltd; Foshan Power Supply Bureau of Guangdong Power Grid Corp
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2020-11-10

Abstract

The invention provides a mechanical small jack which comprises two bearing top covers, wherein two connecting plates are arranged between the two bearing top covers, one side surfaces of the two bearing top covers are fixedly connected with threaded sleeves, the periphery of each threaded sleeve is connected with a lifting sleeve in a sliding mode, a screw rod is arranged inside each lifting sleeve, the bottom end of each screw rod penetrates through the bottom of each lifting sleeve, the bottom end of each screw rod is fixedly connected with a rotating shaft, one end of each rotating shaft is rotatably connected with a first bearing seat, the first bearing seat is fixedly arranged at the bottom of each lifting sleeve, the other end of each rotating shaft is rotatably connected with a second bearing seat, the second bearing seats are fixedly connected with connecting plates, a plurality of screws are arranged between the two connecting plates, rotating rods penetrate through the rotating shafts, the rotating rods are.

Description

Mechanical small jack

Technical Field

The invention relates to the field of jacks, in particular to a mechanical small jack.

Background

The jack is a light and small hoisting device which uses a rigid jacking piece as a working device and jacks heavy objects in a stroke through a top bracket or a bottom supporting claw, is mainly used for departments of factories, mines, transportation and the like as vehicle repair and other hoisting, supporting and the like, has a light and firm, flexible and reliable structure, can be carried and operated by one person, and is divided into a mechanical jack and a hydraulic jack.

The mechanical jack, also called a screw jack, can be used upside down, and has the advantages of simple structure, convenient use, safety and reliability, but the traditional mechanical jack is generally used for hoisting heavy objects with larger sizes, so the specification jack is larger and inconvenient to carry, and the jack for some small heavy objects has a slightly larger size and small use.

The patent specification with application number 201620411619.6 discloses a small-size jack of mechanical type, and this application includes rotating-structure and load-carrying members, rotating-structure passes through threaded connection with load-carrying members, and rotating-structure rotates for load-carrying members in order to jack up the heavy object, the bearing ball that is used for jacking up the heavy object is installed on the rotating-structure top. The handle is rotated to drive the rotating shaft to rotate relative to the bearing structure, so that the rotating shaft moves upwards to push the heavy object to rise; the utility model can be horizontally placed for moving heavy objects; the distance adjusting pad of the utility model is used for adjusting the distance between the bearing ball and the heavy object, so that the operation range of the jack can meet the actual requirement; the utility model discloses simple structure, manufacturing method is simple, and the load lifting capacity can be big or small, can extensively be used for mechanical maintenance work. However, the patent can not be used for lifting various small-sized heavy objects easily and conveniently, and has small size and convenient carrying.

Disclosure of Invention

The invention provides a mechanical small jack which can be used for lifting various small heavy objects easily and conveniently, and is small in size and convenient to carry.

In order to achieve the technical effects, the technical scheme of the invention is as follows:

the utility model provides a small-size jack of mechanical type, includes two bearing top caps, two be equipped with two connecting plates between the bearing top cap, the equal fixedly connected with screw sleeve in two bearing top cap side, the sliding connection has lifting sleeve all around, the inside screw rod that is provided with of lifting sleeve, and the bottom of screw rod runs through lifting sleeve's bottom, and the bottom fixedly connected with pivot of screw rod, the one end of pivot is rotated and is connected with bearing frame one, and bearing frame one fixed mounting is in lifting sleeve's bottom, and the other end of pivot is rotated and is connected with bearing frame two, and two fixedly connected with connecting plates of bearing frame are equipped with a plurality of screws between two connecting plates, and it has the bull stick to run through in the pivot, and the bull stick is located between. The rotating rod rotates the rotating shaft connected between the first bearing seat and the second bearing seat, the rotating shaft enables the screw fixedly connected with the rotating shaft to rotate inside the lifting sleeve, the threaded sleeve is connected with the screw in the lifting sleeve in a sliding mode, the threaded sleeve slides up and down inside the lifting sleeve, the bearing top cover on the threaded sleeve is made to move up to achieve the lifting purpose, and when the lifting height is not enough, the jack can be lifted by rotating the other rotating handle.

Furthermore, the outer surface of the threaded sleeve is in a square block shape, and the threaded sleeve is in threaded connection with the screw rod.

Furthermore, the inside rectangle cavity that is of lift sleeve just agrees with the screw sleeve case, through this kind of relation of connection of design lift sleeve and screw sleeve to reach spacing purpose.

Furthermore, the rotating shaft is rotatably connected between the first bearing seat and the second bearing seat.

Furthermore, the screw rod is rotatably connected inside the lifting sleeve through a rotating shaft, and the top end of the screw rod is flush with the port of the lifting sleeve.

Furthermore, a plurality of threaded through holes are formed in the two connecting plates, and the two connecting plates are fixedly connected through the threaded through holes and the screw threads. By connecting the two jacks, the problem of insufficient lifting height caused by the limited lifting height of the small jack during lifting operation can be solved.

Furthermore, two the other side of bearing top cap all is provided with dull polish pad, and bearing top cap is discoid. Through setting up the dull polish pad to increase the frictional force between jack and the jack-up object, reach skid-proof purpose.

Compared with the prior art, the technical scheme of the invention has the beneficial effects that:

1. the small mechanical jack can be used for lifting various small heavy objects easily and conveniently, and is small in size and convenient to carry.

2. The invention can overcome the problem of insufficient lifting height caused by the limit of the lifting height of the small jack during lifting operation by connecting the two jacks.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the internal structure of the present invention.

FIG. 3 is a schematic top view of the interior of the square sleeve of the present invention;

in the figure: 1. a load bearing top cover; 2. a threaded sleeve; 3. a lifting sleeve; 4. a first bearing seat; 5. screws; 6. a rotating shaft; 7. a rotating rod; 8. a handle is rotated; 9. a connecting plate; 10. a second bearing seat; 11. grinding a sand cushion; 12. a screw.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent;

for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;

it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.

As shown in fig. 1-3, a mechanical small jack comprises two bearing top covers 1, two connecting plates 9 are arranged between the two bearing top covers 1, one side surfaces of the two bearing top covers 1 are fixedly connected with a threaded sleeve 2, the periphery of the threaded sleeve 2 is connected with a lifting sleeve 3 in a sliding manner, the interior of the lifting sleeve 3 is a rectangular cavity and is matched with a threaded sleeve 2 box, the purpose of limiting is achieved by designing the connection relationship between the lifting sleeve 3 and the threaded sleeve 2, a screw 12 is arranged inside the lifting sleeve 3, the outer surface of the threaded sleeve 2 is in a square shape, the threaded sleeve 2 is in threaded connection with the screw 12, the bottom end of the screw 12 penetrates through the bottom of the lifting sleeve 3, the bottom end of the screw 12 is fixedly connected with a rotating shaft 6, one end of the rotating shaft 6 is rotatably connected with a bearing seat one 4, and the bearing seat one 4 is fixedly, the other end of the rotating shaft 6 is rotatably connected with a second bearing seat 10, the rotating shaft 6 is rotatably connected between the first bearing seat 4 and the second bearing seat 10, the second bearing seat 10 is fixedly connected with a connecting plate 9, a plurality of screws 5 are arranged between the two connecting plates 9, a plurality of thread through holes are formed in the two connecting plates 9, and the two connecting plates 9 are fixedly connected through the thread through holes and the screws 5 in a threaded manner. By connecting the two jacks, the problem of insufficient lifting height caused by the limited lifting height of the small jack during lifting operation can be solved.

The rotating rod 7 penetrates through the rotating shaft 6, the rotating rod 7 is located between the first bearing seat 4 and the second bearing seat 10, a rotating handle 8 is arranged at one end of the rotating rod 7, a grinding pad 11 is arranged on the other side face of the bearing top cover 1, and the bearing top cover 1 is disc-shaped. Through setting up dull polish pad 11 to increase the frictional force between jack and the jack-up object, reach skid-proof purpose. A rotating handle 8 is rotated, a rotating shaft 6 which is rotatably connected between a first bearing seat 4 and a second bearing seat 10 is rotated by a rotating rod 7, a screw 12 which is fixedly connected with the rotating shaft 6 is rotated inside a lifting sleeve 3 by the rotating shaft 6, and the threaded sleeve 2 which is slidably connected inside the lifting sleeve 3 is in threaded connection with the screw 12, so that the threaded sleeve 2 slides up and down inside the lifting sleeve 3, the bearing top cover 1 on the threaded sleeve 2 is moved up to achieve the lifting purpose, and when the lifting height is not enough, the jack is lifted by rotating another rotating handle 8.

The working principle of the invention is as follows:

when using this small-size jack of mechanical type, place this device in the bottom of jack-up object, rotate a turning handle 8, the bull stick 7 makes the pivot 6 of rotation connection between bearing frame one 4 and bearing frame two 10 rotate thereupon, pivot 6 makes its fixed connection's screw rod 12 rotate inside lifting sleeve 3, and because the threaded sleeve 2 of sliding connection in lifting sleeve 3 and the threaded connection relation of screw rod 12, make threaded sleeve 2 slide from top to bottom in lifting sleeve 3 is inside, thereby make bearing top cap 1 on the threaded sleeve 2 move up in order to reach the jack-up purpose, when the jack-up height is not enough, the accessible rotates another turning handle 8 and comes the jack-up.

The same or similar reference numerals correspond to the same or similar parts;

the positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent;

it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A mechanical small jack comprises two bearing top covers (1) and is characterized in that two connecting plates (9) are arranged between the two bearing top covers (1), one side surfaces of the two bearing top covers (1) are fixedly connected with threaded sleeves (2), the sides of the threaded sleeves (2) are connected with lifting sleeves (3) in a sliding mode, screw rods (12) are arranged inside the lifting sleeves (3), the bottom ends of the screw rods (12) penetrate through the bottoms of the lifting sleeves (3), a rotating shaft (6) is fixedly connected to the bottom ends of the screw rods (12), one end of the rotating shaft (6) is rotatably connected with a first bearing seat (4), the first bearing seat (4) is fixedly installed at the bottom of the lifting sleeves (3), the other end of the rotating shaft (6) is rotatably connected with a second bearing seat (10), the second bearing seat (10) is fixedly connected with a screw (9), and a plurality of screws (5) are, a rotating rod (7) penetrates through the rotating shaft (6), the rotating rod (7) is located between the first bearing seat (4) and the second bearing seat (10), and a rotating handle (8) is arranged at one end of the rotating rod (7).

2. Mechanical jack, according to claim 1, characterized in that the threaded sleeve (2) is threaded with the threaded rod (12).

3. Mechanical small jack according to claim 2, characterized in that the lifting sleeve (3) is internally rectangular hollow and fits the box of the threaded sleeve (2).

4. Mechanical small jack according to claim 3, characterized in that the rotating shaft (6) is rotatably connected between the first bearing block (4) and the second bearing block (10).

5. Mechanical small jack according to claim 4, characterized in that the threaded rod (12) is rotatably connected to the inside of the lifting sleeve (3) by means of a rotating shaft (6).

6. Mechanical small jack according to claim 5, characterized in that the top end of the screw (12) is flush with the port of the lifting sleeve (3).

7. The mechanical jack, as set forth in claim 6, characterized in that a plurality of screw through holes are provided on the two connecting plates (9), and the two connecting plates (9) are fixed by screw through holes and screws (5).

8. The mechanical jack according to claim 7, wherein the other side of each bearing top cover (1) is provided with a sanding pad (11).

9. Mechanical jack, according to claim 8, characterized in that the load-bearing top cover (1) is disc-shaped.

10. Mechanical jack, according to claim 9, characterized in that the outer surface of the threaded sleeve (2) is in the form of a square block.