CN221116808U

CN221116808U - Compound jack

Info

Publication number: CN221116808U
Application number: CN202323313396.9U
Authority: CN
Inventors: 徐庆发; 张景明
Original assignee: Langfang Qingfa Auto Parts Technology Co ltd
Current assignee: Langfang Qingfa Auto Parts Technology Co ltd
Priority date: 2023-12-06
Filing date: 2023-12-06
Publication date: 2024-06-11
Anticipated expiration: 2033-12-06

Abstract

The utility model discloses a compound jack, which comprises a base, a fixed seat and a support arm A, wherein one end of the support arm A is movably connected with a guide sleeve A through a bearing, the other end of the support arm A is movably connected with a support frame through a connecting shaft, a traction nut B is arranged in the guide sleeve A at one end of the bottom of the support arm A, a screw rod A penetrating through the guide sleeve A at the other end is movably connected with the guide sleeve A through the traction nut B, a primary lever mechanism and a secondary lever mechanism are adopted, and the primary jack is driven to lift up by 100mm by using the secondary jack in the middle in the initial lifting stage, so that the problem that the lifting moment of one jack is large due to high lifting height and manual operation cannot be screwed is solved.

Description

Compound jack

Technical Field

The utility model relates to the technical field of jacks, in particular to a compound jack.

Background

The jack is light and small lifting equipment for lifting a heavy object in a small stroke of a top bracket or a bottom supporting claw by using a rigid lifting piece as a working device, the existing jack is divided into a screw jack, a rack jack, a hydraulic jack, a pneumatic jack, an electric jack, a mechanical scissor jack and the like, and the simplest, portable, small, light and simple-to-operate scissor jack is used in a vehicle tool of an existing automobile and is used for supporting the automobile, most of maintenance and replacement tires are the scissor jack with simple structure, small volume and low price, the scissor jack utilizes isosceles triangles, and the length of the bottom edge is changed by rotating screw nuts, so that the lifting function is realized by changing the height of the isosceles triangles, and the application is very wide.

The existing jacking jack has the following defects in the use process: at present, the lifting height of the scissor jack is limited by the structure and the external dimension and is below 450mm, the lifting height of the existing scissor jack can only be below 450mm under the actual condition of loading 1000Kg, if the lifting height is increased, the lifting resistance is high when the control is started due to the fact that the lifting height is high, the screw rod cannot be rotated by a manual method, and the lifting process cannot be achieved.

Disclosure of utility model

The utility model mainly aims to provide a compound jack, which skillfully utilizes a primary mechanism and a secondary mechanism according to a rod principle, and can obviously raise the lifting height of the jack to 760mm under the condition of ensuring the external dimension, thereby effectively solving the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

The utility model provides a compound jack, includes the base, still includes fixing base and support arm A, support arm A one end has uide bushing A through bearing swing joint, there is the support frame through connecting axle swing joint between the support arm A other end, support arm A bottom one end uide bushing A inside is provided with draw nut B and has screw rod A that runs through other end uide bushing A inside through draw nut B swing joint, base internally mounted has guide gear A and has support arm B and support arm F through guide gear A swing joint, support arm B and support arm F tip have support arm C and support arm D through round pin axle A swing joint respectively.

Further, the top ends of the support arm C and the support arm D are movably connected with a support arm E through a pin shaft B, a fixed seat for supporting a part to be lifted is arranged between the top ends of the support arm E, and a guide sleeve B is arranged at the bottom end of the support arm E; the top ends of the support arm C and the support arm D are connected with the support arm E through the pin shaft B, and the support arm C and the support arm D shrink in the lifting process of the jack top structure, so that the fixing seat can be lifted through the support arm E.

Further, a traction nut A is arranged in a guide sleeve B at one end of the bottom of the supporting arm E, and a screw rod B penetrating through the guide sleeve B at the other end is movably connected in the traction nut A; the screw rod B is screwed along the interior of the traction nut A, so that the distance between the bottom ends of the supporting arms E can be adjusted, and the lifting height of the fixing seat can be adjusted.

Further, a pin shaft C is arranged at the joint between the fixing seat and the end part of the supporting arm E, and a guide gear B is arranged at the joint between the top ends of the supporting arms A; the pin shaft C plays a role in connection, and the guide gear B enables the supporting arm E to deflect around the inside of the fixing seat.

Compared with the prior art, the utility model has the following beneficial effects: when the jack needs to be lifted, the screw rod A is screwed by the labor-saving ratchet wrench, the screw rod A is screwed in the traction nut B through the guide sleeve A, the bottom interval of the support arm A is shortened, the support arm A is lifted by the shaft body between the support arm C and the support arm D through the support frame, the support arm B, the support arm C and the support arm D move, the preliminary lifting of the jack is completed, then the screw rod B is screwed, the screw rod B rotates in the traction nut A through the guide sleeve B, the support arm C, the support arm D and the support arm E move, the lifting treatment is carried out on the fixing seat and the top part of the fixing seat until the designed height 760mm is reached, the guide gear A and the guide gear B play a connecting and positioning role, the primary and secondary two lever mechanisms are adopted, the primary jack is driven by the primary jack to lift by the middle primary jack in the initial lifting stage, the problem that the lifting moment is large due to the lifting height is avoided, the primary jack cannot be screwed manually, after the primary jack is lifted to 100mm, the included angle is increased, the resistance is increased, the primary jack starts to the lifting height is reduced, the primary jack is designed to have the lifting height 760mm, and the lifting size is kept to be higher, and the lifting situation is obviously is guaranteed.

Drawings

Fig. 1 is a schematic view of the overall structure of a multiple jack according to the present utility model.

Fig. 2 is a schematic plan view of a compound jack according to the present utility model in an unfolded state.

Fig. 3 is a schematic side view of a compound jack according to the present utility model in an unfolded state.

Fig. 4 is a perspective view showing a folding state of the double jack according to the present utility model.

Fig. 5 is a schematic side view of a folding structure of the multiple jack according to the present utility model.

Fig. 6 is a schematic top view of a folding structure of a multiple jack according to the present utility model.

In the figure: 1. a guide gear A; 2. a base; 3. a screw A; 4. a guide sleeve A; 5. a support arm A; 6. a pin A; 7. a support arm B; 8. a support arm C; 9. a support arm D; 10. a pin B; 11. a screw B; 12. a guide sleeve B; 13. a support arm E; 14. a fixing seat; 15. a pin C; 16. a guide gear B; 17. a traction nut A; 18. a support arm F; 19. a connecting shaft; 20. a traction nut B; 21. a support frame; 22. and (3) a bearing.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-6, a compound jack comprises a base 2, and further comprises a fixed seat 14 and a support arm A5, wherein one end of the support arm A5 is movably connected with a guide sleeve A4 through a bearing 22, the other end of the support arm A5 is movably connected with a support frame 21 through a connecting shaft 19, a traction nut B20 is arranged in the guide sleeve A4 at one end of the bottom of the support arm A5, a screw rod A3 penetrating through the guide sleeve A4 at the other end is movably connected through the traction nut B20, a guide gear A1 is arranged in the base 2, a support arm B7 and a support arm F18 are movably connected through the guide gear A1, and the end parts of the support arm B7 and the support arm F18 are respectively movably connected with a support arm C8 and a support arm D9 through a pin shaft A6.

The top ends of the support arm C8 and the support arm D9 are movably connected with a support arm E13 through a pin shaft B10, a fixed seat 14 for supporting a part to be lifted is arranged between the top ends of the support arm E13, and a guide sleeve B12 is arranged at the bottom end of the support arm E13; the top ends of the support arm C8 and the support arm D9 are connected with the support arm E13 through the pin shaft B10, and in the lifting process of the jack top structure, the support arm C8 and the support arm D9 shrink, so that the fixing seat 14 can be lifted through the support arm E13.

The device comprises a support arm E13, a guide sleeve B12 at one end of the bottom of the support arm E13, a traction nut A17, a screw rod B11 penetrating through the guide sleeve B12 at the other end of the support arm E13, a pin shaft C15 arranged at the joint between a fixed seat 14 and the end of the support arm E13, and a guide gear B16 arranged at the joint between the top ends of the support arms A5; the screw rod B11 is screwed along the interior of the traction nut A17, the space between the bottom ends of the supporting arms E13 can be adjusted, the lifting height of the fixing seat 14 can be adjusted, the pin shaft C15 plays a role in connection, and the supporting arms E13 can deflect around the interior of the fixing seat 14 by the guide gear B16.

When the jack is used, the screw A3 is screwed by the labor-saving ratchet wrench, the screw A3 is screwed in the traction nut B20 through the guide sleeve A4 to shorten the bottom interval of the support arm A5, the support arm A5 is used for lifting a shaft body positioned between the support arm C8 and the support arm D9 through the support frame 21, the support arm B7, the support arm C8 and the support arm D9 move to finish the preliminary lifting of the jack, then the screw B11 is screwed, the screw B11 is rotated in the traction nut A17 through the guide sleeve B12 to enable the support arm B7, the support arm C8, the support arm D9 and the support arm E13 to move, lifting treatment is carried out on the fixed seat 14 and the parts to be lifted on the top of the fixed seat until the designed height is 760mm, the guide gear A1 and the guide gear B16 play a connecting and positioning role, and two lever mechanisms are adopted in an initial lifting stage, the jack in the middle is utilized to drive the jack to lift the jack by 100mm, so that the problem that the lifting moment of one jack is high, the lifting moment is caused by the lifting of the jack is increased, the lifting moment is not increased to be higher than the jack lifting the jack is solved, and the lifting resistance of the jack is obviously designed to be higher than the jack lifting the jack is reduced, and the lifting moment is increased to be 100 mm.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a compound jack, includes base (2), its characterized in that still includes fixing base (14) and support arm A (5), support arm A (5) one end has uide bushing A (4) through bearing (22) swing joint, there is support frame (21) through connecting axle (19) swing joint between the support arm A (5) other end, support arm A (5) bottom one end uide bushing A (4) inside is provided with draw nut B (20) and has screw rod A (3) through draw nut B (20) swing joint through other end uide bushing A (4) inside, base (2) internally mounted has guide gear A (1) and has support arm B (7) and support arm F (18) through guide gear A (1) swing joint, support arm B (7) and support arm F (18) tip have support arm C (8) and support arm D (9) through round pin axle A (6) swing joint respectively.

2. A multiple jack as claimed in claim 1, wherein: the lifting device is characterized in that the top ends of the supporting arm C (8) and the supporting arm D (9) are movably connected with the supporting arm E (13) through the pin shaft B (10), a fixing seat (14) for supporting a part to be lifted is arranged between the top ends of the supporting arm E (13), and the bottom ends of the supporting arm E (13) are respectively provided with the guide sleeve B (12).

3. A multiple jack as claimed in claim 2, wherein: the device is characterized in that a traction nut A (17) is arranged in a guide sleeve B (12) at one end of the bottom of the supporting arm E (13), and a screw rod B (11) penetrating through the guide sleeve B (12) at the other end is movably connected in the traction nut A (17).

4. A multiple jack as claimed in claim 2, wherein: the pin shaft C (15) is arranged at the joint between the fixing seat (14) and the end part of the supporting arm E (13), and the guide gear B (16) is arranged at the joint between the top ends of the supporting arms A (5).