CN217458667U

CN217458667U - Adjustable mechanical jack

Info

Publication number: CN217458667U
Application number: CN202221628541.5U
Authority: CN
Inventors: 刘成志; 高爱利
Original assignee: Qiqihar Qisan Machine Tool Co Ltd
Current assignee: Qiqihar Qisan Machine Tool Co Ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-09-20
Anticipated expiration: 2032-06-28

Abstract

The utility model discloses a mechanical jack with adjustable, including spiral post, two first connecting blocks, four first fixed axles, four first cranks, four second fixed axles, four second cranks, four third fixed axles, third connecting block, supporting shoe and supporting component, each threaded connection in both ends of spiral post has a first connecting block, two both ends face all respectively is connected with a first fixed axle around the first connecting block. The utility model provides a cut formula jack and call support jack again, use lightly swiftly, be the on-vehicle product of each internal big truck factory, but the traditional formula jack bearing capacity of cutting on the market is weak, can not support the problem of large-scale vehicle in.

Description

Adjustable mechanical jack

Technical Field

The utility model relates to a jack.

Background

The screw jack is also called mechanical jack, and is driven by manpower through screw pair, and the screw rod or nut sleeve is used as a jacking piece. Compared with a hydraulic jack, the screw jack has the advantages of no liquid leakage and simple operation. The scissor jack is also called a support jack, is light and fast to use, is a vehicle-mounted product in various domestic large automobile factories, but the traditional scissor jack in the market has weak bearing capacity and cannot support medium and large vehicles.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mechanical jack with adjustable, have great supporting force and can support large-scale vehicle in the middle of.

The technical scheme for realizing the purpose is as follows: an adjustable mechanical jack comprises a spiral column, wherein one end of the spiral column is in threaded connection with a first connecting block, and the other end of the spiral column penetrates through a fifth connecting block; the front end face and the rear end face of each of the first connecting block and the fifth connecting block are respectively connected with a first fixed shaft; the four first fixed shafts are respectively and rotatably connected with one ends of four first cranks; the other ends of the four first cranks are rotatably connected with corresponding second fixed shafts; the four second fixed shafts are respectively connected to the front end face and the rear end face of the second connecting block; the four second fixed shafts are respectively and rotatably connected with one ends of four second cranks; the other ends of the four second cranks are rotatably connected with corresponding third fixed shafts; the four third fixed shafts are respectively connected to the front end face and the rear end face of the third connecting block; the lower end face of the third connecting block is connected with a supporting block; the front end and the rear end of the supporting block are respectively connected with a supporting component.

Preferably, the supporting assembly comprises a guide rail, a cylinder, a sliding block, a fourth fixed shaft, a third crank, a fifth fixed shaft and two fourth connecting blocks, and the front end and the rear end of the supporting block are respectively connected with one guide rail; the tail end of the guide rail is provided with a cylinder; a piston rod of the air cylinder is connected with a sliding block; the surface of the sliding block is provided with a mounting groove; a fourth fixed shaft is arranged in the mounting groove; the fourth fixed shaft is rotatably connected with one end of the third crank; the other end of the third crank is rotatably connected with a fifth fixed shaft; two ends of the fifth fixing shaft are connected between the two fourth connecting blocks; and the two fourth connecting blocks are arranged on the front end face and the rear end face of the second connecting block.

Preferably, the upper surface of the second connecting block is connected with a bearing block.

Preferably, a plurality of first connecting rods are arranged between two corresponding first cranks.

Preferably, a plurality of second connecting rods are arranged between two corresponding second cranks.

Preferably, one end of the spiral column is provided with a rotating rod.

Preferably, the rotating rod can be just clamped in an output port of the electric drill gun.

Preferably, two sides of the joint of the four first cranks, the four second cranks, the two third cranks and the corresponding first fixed shaft, the second fixed shaft, the third fixed shaft, the fourth fixed shaft and the fifth fixed shaft are provided with limiting blocks.

And a bearing is arranged at the joint of the spiral column and the fifth connecting block.

The utility model has the advantages that: the fourth fixed shaft is rotatably connected with one end of the third crank, the other end of the third crank is rotatably connected with the fifth fixed shaft, two ends of the fifth fixed shaft are connected between the two fourth connecting blocks, when the sliding block moves towards the inside of the guide rail, the second connecting block moves upwards in a straight line under the action of the third crank, when the sliding block moves towards the outside of the guide rail, the second connecting block moves downwards in a straight line under the action of the third crank, and pressure received by the second connecting block is transmitted to the two third cranks, the two sliding blocks and the two cylinders, so that partial gravity can be borne, and the bearing capacity of the device is improved;

the dwang can just in time block in specific electric drill rifle output port, utilizes specific electric drill rifle can rotate the dwang to drive the spiral post and rotate, replace the tradition person with the dwang to rotate the spiral post, it is more convenient.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a cross-sectional view of the present invention;

fig. 4 is a part diagram of the inside of the support assembly of the present invention.

FIG. 5 is a partial enlarged view at B in FIG. 4;

FIG. 6 is an enlarged view of a portion of FIG. 4 at C;

in the figure: 1. a helical column; 2. a first connection block; 3. a first fixed shaft; 4. a first crank; 5. a second fixed shaft; 6. a second connecting block; 7. a second crank; 8. a third fixed shaft; 9. a third connecting block; 10. a support block; 11. a cylinder; 12. a slider; 13. a fourth fixed shaft; 14. a third crank; 15. a fifth fixed shaft; 16. a fourth connecting block; 17. a guide rail; 18. a bearing block; 19. a first connecting rod; 20. a second connecting rod; 21. rotating the rod; 22. and a fifth connecting block.

Detailed Description

The technical solution of the present invention will be clearly and completely described with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1-6, an adjustable mechanical jack comprises a screw column 1, a first connecting block 2, four first fixing shafts 3, four first cranks 4, four second fixing shafts 5, four second cranks 7, four third fixing shafts 8, a third connecting block 9, a supporting block 10 and a supporting assembly.

One end of the spiral column 1 is in threaded connection with a first connecting block 2, the other end of the spiral column passes through a fifth connecting block 22, the spiral column 1 rotates to drive the first connecting block 2 and the fifth connecting block 22 to move relatively or deviate from each other at the middle of the spiral column 1, and the front end face and the rear end face of the first connecting block 2 and the front end face of the fifth connecting block 22 are respectively connected with a first fixing shaft 3; the four first fixed shafts 3 are respectively and rotatably connected with one ends of four first cranks 4; the other ends of the four first cranks 4 are rotatably connected with corresponding second fixed shafts 5, and under the action of the four first cranks 4, when the first connecting block 2 and the fifth connecting block 22 do relative motion or deviation motion, the second connecting block 6 is driven to do ascending or descending linear motion; four second fixed shafts 5 are respectively connected to the front end face and the rear end face of the second connecting block 6; the four second fixed shafts 5 are respectively and rotatably connected with one ends of four second cranks 7; the other ends of the four second cranks 7 are rotatably connected with corresponding third fixed shafts 8; four third fixed shafts 8 are respectively connected to the front end face and the rear end face of the third connecting block 9; the lower end face of the third connecting block 9 is connected with a supporting block 10, and under the action of four second cranks 7, when the first connecting block 2 and the fifth connecting block 22 do relative motion or deviation motion, the spiral column 1, the first connecting block 2 and the fifth connecting block 22 are driven to do ascending or descending linear motion; the front end and the rear end of the supporting block 10 are respectively connected with a supporting component, and the supporting components can bear partial gravity, so that the bearing capacity of the device is improved.

The supporting component comprises a guide rail 17, a cylinder 11, a sliding block 12, a fourth fixed shaft 13, a third crank 14, a fifth fixed shaft 15 and two fourth connecting blocks 16, the front end and the rear end of the supporting block 10 are respectively connected with one guide rail 17, and the guide rails 17 can limit the movement direction of the sliding block 12, so that the sliding block 12 can only do linear movement along the direction of the guide rails 17; the tail end of the guide rail 17 is provided with a cylinder 11; a piston rod of the cylinder 11 is connected with a slide block 12 to provide power for the linear motion of the slide block 12; the surface of the sliding block 12 is provided with a mounting groove; a fourth fixed shaft 13 is arranged in the mounting groove; the fourth fixed shaft 13 is rotatably connected with one end of a third crank 14; the other end of the third crank 14 is rotatably connected with a fifth fixed shaft 15; two ends of the fifth fixed shaft 15 are connected between the two fourth connecting blocks 16; two fourth connecting blocks 16 are arranged on the front end face and the rear end face of the second connecting block 6, when the sliding block 12 moves towards the inner part of the guide rail 17, the second connecting block 6 makes ascending linear motion under the action of the third crank 14, and when the sliding block 12 moves towards the outer part of the guide rail 17, the second connecting block 6 makes descending linear motion under the action of the third crank 14.

The upper surface of the second connecting block 6 is connected with a bearing block 18 for bearing the gravity of a heavy object, a plurality of first connecting rods 19 are arranged between two corresponding first cranks 4, and the two opposite first cranks 4 are connected with each other through the plurality of first connecting rods 19, so that the stability of the device is improved; a plurality of second connecting rods 20 are arranged between the two corresponding second cranks 7, and the two opposite second cranks 7 are connected with each other through the plurality of second connecting rods 20, so that the stability of the device is improved; one end of the spiral column 1 is provided with a rotating rod 21; the rotating rod 21 can be just clamped in a specific electric drill gun output port, and the specific electric drill gun can be used for rotating the rotating rod 21 so as to drive the spiral column 1 to rotate; the two sides of the joint of the four first cranks 4, the four second cranks 7 and the two third cranks 14 and the corresponding first fixing shaft 3, the second fixing shaft 5, the third fixing shaft 8, the fourth fixing shaft 13 and the fifth fixing shaft 15 are provided with limiting blocks, so that the limiting function is achieved, the positions of the four first cranks 4, the four second cranks 7 and the two third cranks 14 are prevented from being changed, and the stability of the device is improved.

The external screw thread has not been seted up to the one end of spiral column 1, with bearing interference fit, the handing-over department of spiral column 1 and fifth connecting block 22 is provided with the bearing, reduces friction force, makes things convenient for spiral column 1 to rotate.

The parameters of the cylinder 11 are set, so that the speed of the cylinder 11 driving the second connecting block 6 to ascend or descend is the same as the speed of the cylinder 11 driving the second connecting block 6 to ascend or descend through the specific electric drill gun rotating spiral column 1.

The working principle is as follows: the device is placed at a working position, the bearing block 18 is opposite to a position needing to be jacked, the rotating rod 21 faces outwards, then the rotating rod 21 is plugged into an output port of a specific electric drill gun, the two cylinders 11 and the specific electric drill gun are opened simultaneously, the specific electric drill gun drives the rotating rod 21 to rotate at the moment, the spiral column 1 rotates, the first connecting block 2 and the fifth connecting block 22 do relative motion and drive the four first cranks 4 and the four second cranks 7 to rotate, the two cylinders 11 on the other side drive the sliding block 12 to move towards the inside of the guide rail 17, the two third cranks 14 rotate, the second connecting block 6 rises under the simultaneous action of the four first cranks 4, the four second cranks 7 and the two third cranks 14 until a maintenance vehicle is jacked up, and the two cylinders 11 and the specific electric drill gun are closed; when it is desired to put the vehicle down and take the device out, the particular power drill is reversed simultaneously and the piston rods of the two cylinders 11 are retracted.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. An adjustable mechanical jack comprises a spiral column (1), and is characterized in that one end of the spiral column (1) is in threaded connection with a first connecting block (2), and the other end of the spiral column passes through a fifth connecting block (22); the front end face and the rear end face of each of the first connecting block (2) and the fifth connecting block (22) are respectively connected with a first fixed shaft (3); the four first fixed shafts (3) are respectively and rotatably connected with one ends of four first cranks (4); the other ends of the four first cranks (4) are rotatably connected with corresponding second fixed shafts (5); the four second fixed shafts (5) are respectively connected to the front end face and the rear end face of the second connecting block (6); the four second fixed shafts (5) are respectively and rotatably connected with one ends of four second cranks (7); the other ends of the four second cranks (7) are rotatably connected with corresponding third fixed shafts (8); the four third fixed shafts (8) are respectively connected to the front end face and the rear end face of the third connecting block (9); the lower end face of the third connecting block (9) is connected with a supporting block (10); the front end and the rear end of the supporting block (10) are respectively connected with a supporting component.

2. The adjustable mechanical jack as claimed in claim 1, wherein the support assembly comprises a guide rail (17), a cylinder (11), a slider (12), a fourth fixed shaft (13), a third crank (14), a fifth fixed shaft (15) and two fourth connecting blocks (16), and the front end and the rear end of the support block (10) are respectively connected with one guide rail (17); the tail end of the guide rail (17) is provided with a cylinder (11); a piston rod of the air cylinder (11) is connected with a sliding block (12); the surface of the sliding block (12) is provided with a mounting groove; a fourth fixed shaft (13) is arranged in the mounting groove; the fourth fixed shaft (13) is rotatably connected with one end of a third crank (14); the other end of the third crank (14) is rotatably connected with a fifth fixed shaft (15); two ends of the fifth fixed shaft (15) are connected between the two fourth connecting blocks (16); the two fourth connecting blocks (16) are arranged on the front end face and the rear end face of the second connecting block (6).

3. An adjustable mechanical jack as claimed in claim 1, wherein a bearing block (18) is attached to the upper surface of the second connecting block (6).

4. An adjustable jack according to claim 1, wherein a plurality of first connecting rods (19) are provided between two corresponding first cranks (4).

5. Adjustable mechanical jack according to claim 1, wherein a plurality of second connecting rods (20) are provided between two corresponding second cranks (7).

6. Adjustable mechanical jack, according to claim 1, characterized in that one end of the screw column (1) is provided with a turning rod (21).

7. An adjustable jack according to claim 6, wherein the rotatable rod (21) is adapted to snap into the output of the power drill.

8. The adjustable mechanical jack according to claim 2, wherein two sides of the joints of the four first cranks (4), the four second cranks (7) and the two third cranks (14) with the corresponding first fixed shaft (3), the second fixed shaft (5), the third fixed shaft (8), the fourth fixed shaft (13) and the fifth fixed shaft (15) are provided with limit blocks.

9. Adjustable mechanical jack according to claim 1, wherein a bearing is provided at the junction of the screw column (1) and the fifth connecting block (22).