CN210559085U

CN210559085U - Scissor jack

Info

Publication number: CN210559085U
Application number: CN201921219169.0U
Authority: CN
Inventors: 李玮
Original assignee: Jiaxing Jinteng Machinery Co Ltd
Current assignee: Jiaxing Jinteng Machinery Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-05-19
Anticipated expiration: 2029-07-31

Abstract

The utility model discloses a scissor jack, including lower base, last base, preceding connecting seat, back connecting seat, two go up support arm, two lower support arms, two linking arms, traction mechanism and two coupling mechanisms, the both ends of support arm are connected with base and preceding connecting seat are articulated respectively once, the both ends of another support arm are connected with base and back connecting seat are articulated respectively, the both ends of going up the support arm are connected with last base and preceding connecting seat are articulated respectively one by one, the both ends of going up the support arm are connected with last base and back connecting seat are articulated respectively on another, all alternately be equipped with rotatable linking arm on the lower support arm, the upper end of linking arm is equipped with the traction mechanism of connecting seat and back connecting seat before the tractive, compares with prior art, can improve work efficiency to it is laborsaving to use.

Description

Scissor jack

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of jack, especially a shear formula jack's technical field.

[ background of the invention ]

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

The existing scissor jack adjusts the bottom edges of an upper isosceles triangle and a lower isosceles triangle through a screw rod and a nut to lift and lower the height. Just like the tool ladder in ordinary life, the ladder is higher when the contained angle of two arms of ladder is littleer, and the ladder is lower when the contained angle of two arms of ladder is bigger like this. In general, the jacking and dropping speed is quite slow during use, so that the slow ascending and descending when the scissor jack is not in contact with a heavy object greatly influences the working efficiency.

[ Utility model ] content

The utility model aims at solving the problem in the prior art, providing a formula jack of cutting can improve work efficiency to it is laborsaving to use.

In order to achieve the purpose, the utility model provides a scissor jack, which comprises a lower base, an upper base, a front connecting seat, a rear connecting seat, two upper supporting arms, two lower supporting arms, two connecting arms, a traction mechanism and two connecting mechanisms, two ends of the lower supporting arm are respectively hinged with the lower base and the front connecting seat, two ends of the other lower supporting arm are respectively hinged with the lower base and the rear connecting seat, two ends of one upper supporting arm are respectively hinged with the upper base and the front connecting seat, two ends of the other upper supporting arm are respectively hinged with the upper base and the rear connecting seat, the lower supporting arms are all crossed and provided with rotatable connecting arms, the upper ends of the connecting arms are provided with traction mechanisms for drawing the front connecting seat and the rear connecting seat, the lower end of the connecting arm is connected with the lower base through a connecting mechanism, and the traction mechanism is provided with a pulley block.

Preferably, the traction mechanism comprises a shell, two movable pulley blocks, two fixed pulley blocks, a rotating shaft, two reels and a driving mechanism, the shell is provided with the rotating shaft, the rotating shaft is provided with the reels in the shell, the fixed pulley blocks are arranged at the front end and the rear end of the shell, the movable pulley blocks are arranged on the inner sides of the front connecting seat and the rear connecting seat, the movable pulley blocks and the fixed pulley blocks corresponding to each other in the front and the rear direction form a pulley block, the pulley blocks are provided with steel wire ropes, the winding ends of the steel wire ropes penetrate through the side wall of the shell and are fixedly connected with the corresponding reels, and the shell is provided with the driving.

Preferably, the driving mechanism comprises a crank, a shaft body, a driving gear and a driven gear, the crank is arranged at the outer end of the shaft body, the driving gear is arranged at the inner end of the shaft body, and the driving gear is meshed with the driven gear arranged on the rotating shaft.

Preferably, the gear ratio of the driving gear to the driven gear is: 1:5.

Preferably, the connecting mechanism comprises a sliding rail, a sliding seat and a fixing mechanism, the sliding rail is arranged on the lower base, the sliding seat capable of sliding is installed on the sliding rail in a matched mode, and the fixing mechanism connected with the sliding rail in an inserted mode is arranged on the sliding seat.

Preferably, the fixing mechanism comprises a pin body, a sleeve body, a first spring, a second spring, a protrusion, a screw rod, a nut and a retainer ring, the sleeve body is arranged on the sliding seat, the pin body is arranged in the sleeve body, the retainer ring is arranged in the upper end of the sleeve body, the pin body is arranged in the sleeve body in a protrusion mode, the first spring is arranged on the pin body between the protrusion and the retainer ring, the screw rod is arranged at the upper end of the pin body, the nut is arranged on the screw rod, and the second spring with two ends respectively abutted to the sleeve body and the nut is arranged on the pin body.

Preferably, the lower end of the plug pin body is an inclined plane, and the upper end of the slide rail is provided with plug grooves which are uniformly distributed and matched with the insertion end of the plug pin body.

The utility model has the advantages that: the utility model discloses a connecting seat and back connecting seat move in opposite directions before the pulling of traction mechanism, and traction mechanism's assembly pulley and gear drive's application replace the cooperation of traditional lead screw and nut, compare with prior art, can improve work efficiency to it is laborsaving to use.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of a scissor jack according to the present invention;

FIG. 2 is an enlarged view of A in FIG. 1;

FIG. 3 is a partial top view of the pulling mechanism;

fig. 4 is a schematic view of the structure of the connection mechanism.

In the figure: 1-lower base, 2-upper base, 3-front connecting base, 4-rear connecting base, 5-upper supporting arm, 6-lower supporting arm, 7-connecting arm, 8-traction mechanism, 9-connecting mechanism, 81-shell, 82-movable pulley block, 83-fixed pulley block, 84-steel wire rope, 85-rotating shaft, 86-reel and 87-driving mechanism, 871-a crank, 872-a shaft body, 873-a driving gear, 874-a driven gear, 91-a sliding rail, 92-a sliding seat, 93-a fixing mechanism, 94-a plug groove, 931-a plug pin body, 932-a sleeve body, 933-a first spring, 934-a second spring, 935-a bulge, 936-a screw rod, 937-a nut and 938-a retainer ring.

[ detailed description ] embodiments

Referring to fig. 1, 2, 3 and 4, the scissor jack of the present invention comprises a lower base 1, an upper base 2, a front connecting seat 3, a rear connecting seat 4, two upper supporting arms 5, two lower supporting arms 6, two connecting arms 7, a pulling mechanism 8 and two connecting mechanisms 9, wherein two ends of the lower supporting arm 6 are respectively hinged to the lower base 1 and the front connecting seat 3, two ends of the other lower supporting arm 6 are respectively hinged to the lower base 1 and the rear connecting seat 4, two ends of the one upper supporting arm 5 are respectively hinged to the upper base 2 and the front connecting seat 3, two ends of the other upper supporting arm 5 are respectively hinged to the upper base 2 and the rear connecting seat 4, the lower supporting arm 6 is provided with a rotatable connecting arm 7 in a crossing manner, the upper end of the connecting arm 7 is provided with the pulling mechanism 8 for pulling the front connecting seat 3 and the rear connecting seat 4, the lower end of the connecting arm 7 is connected with the lower base 1 through a connecting mechanism 9, the traction mechanism 8 is a traction mechanism with pulley blocks, the traction mechanism 8 comprises a shell 81, two movable pulley blocks 82, two fixed pulley blocks 83, a rotating shaft 85, two reels 86 and a driving mechanism 87, the shell 81 is provided with the rotating shaft 85, the rotating shaft 85 is provided with the reels 86 in the shell 81, the front end and the rear end of the shell 81 are provided with the fixed pulley blocks 83, the inner sides of the front connecting seat 3 and the rear connecting seat 4 are provided with the movable pulley blocks 82, the front and the rear corresponding movable pulley blocks 82 and the fixed pulley blocks 83 form a pulley block, the pulley block is provided with a steel wire rope 84, the winding end of the steel wire rope 84 penetrates through the side wall of the shell 81 to be fixedly connected with the corresponding reel blocks 86, and the shell 81 is provided with the, the driving mechanism 87 comprises a crank 871, an axle 872, a driving gear 873 and a driven gear 874, wherein the outer end of the axle 872 is provided with the crank 871, the inner end of the axle 872 is provided with a driving gear 873, the driving gear 873 is engaged with the driven gear 874 arranged on the rotating shaft 85, and the gear ratio of the driving gear 873 to the driven gear 874 is as follows: 1:5, the connecting mechanism 9 includes a slide rail 91, a slide seat 92 and a fixing mechanism 93, the slide rail 91 is arranged on the lower base 1, the slide rail 91 is provided with the slidable slide seat 92 in a matching manner, the slide seat 92 is provided with the fixing mechanism 93 connected with the slide rail 91 in an inserting manner, the fixing mechanism 93 includes a pin body 931, a sleeve body 932, a first spring 933, a second spring 934, a protrusion 935, a screw 936, a nut 937 and a retainer 938, the sleeve body 932 is arranged on the slide seat 92, the pin body 931 is arranged in the sleeve body 932, the retainer 938 is arranged in the upper end of the sleeve body 932, the pin body 931 is provided with the protrusion 935 in the sleeve body 932, the first spring 933 is arranged on the pin body 931 between the protrusion 935 and the retainer 938, the screw 936 is arranged in the upper end of the pin body, the nut 937 is arranged on the screw sleeve body, the pin body is provided with the second spring 934 whose two ends are respectively abutted against the pin body 932, the lower end of the plug body 931 is an inclined plane, and the upper end of the slide rail 91 is provided with plug grooves 94 which are uniformly distributed and matched with the insertion end of the plug body 931.

The utility model discloses the working process:

the utility model relates to a scissor jack is in the course of the work, clockwise rotation crank 871 drives the axis body 872 and rotates, axis body 872 drives axis of rotation 85 through the cooperation of driving gear 873 and driven gear 874 and rotates, axis of rotation 85 drives reel 86 and convolutes wire rope 84, wire rope 84 is through connecting seat 3 and back connecting seat 4 motion in opposite directions before the pulling of running block group 82, the motion is drawn close to in the front under connecting seat 3 and the drive of back connecting seat 4 to the upper end of two lower support arms 6, the motion is drawn close to in two lower extremes of going up support arm 5 under the drive of connecting seat 3 and back connecting seat 4 in the front, the rising of base 2 is gone up in the realization.

When the upper ends of the two lower supporting arms 6 are moved closer together, the two lower supporting arms 6 respectively drive the two connecting arms 7 to move, the two connecting arms 7 respectively pull the two sliding bases 92 to move towards each other, the sliding bases 92 drive the fixing mechanisms 93 to move, when the pin body 931 corresponds to the inserting groove 94, under the action of the first spring 933, the first spring 933 drives the pin body 931 to insert into the inserting groove 94 through the protrusion 935, because the lower end of the pin body 931 is an inclined surface, when the two sliding bases 92 move towards each other, the rear end of the inserting groove 94 forces the pin body 931 to move upwards and compresses the first spring 933 through the protrusion 935, so that the two sliding bases 92 do not interfere with each other to move towards each other, when the pin body 931 inserts into the inserting groove 94, the two sliding bases 92 move in opposite directions, the pin body 931 cannot automatically move upwards, at this time, the two sliding bases 92 cannot move in opposite directions, and the lower supporting arms 6 are fixed through the, thereby keeping the current height position of the upper base 2 unchanged.

When the upper base 2 needs to descend, the nut 937 rotates clockwise to move downwards to compress the second spring 934, so that the acting force of the second spring 934 on the nut 937 is greater than the acting force of the first spring 933 on the protrusion 935, then the ascending operation of the upper base 2 is performed, when the plug 931 is not in contact with the front end of the insertion groove 94, the nut 937 pulls the plug 931 to move upwards through the screw rod under the action of the second spring 934, so that the plug 931 moves out of the insertion groove 94, then the crank 871 is loosened, and at the moment, the upper base 2 descends by itself under the action of gravity.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims

1. A scissor jack, comprising: comprises a lower base (1), an upper base (2), a front connecting seat (3), a rear connecting seat (4), two upper supporting arms (5), two lower supporting arms (6), two connecting arms (7), a traction mechanism (8) and two connecting mechanisms (9), wherein two ends of one lower supporting arm (6) are respectively hinged with the lower base (1) and the front connecting seat (3), two ends of the other lower supporting arm (6) are respectively hinged with the lower base (1) and the rear connecting seat (4), two ends of one upper supporting arm (5) are respectively hinged with the upper base (2) and the front connecting seat (3), two ends of the other upper supporting arm (5) are respectively hinged with the upper base (2) and the rear connecting seat (4), the lower supporting arm (6) is respectively and crossly provided with a rotatable connecting arm (7), the upper end of the connecting arm (7) is provided with the traction mechanism (8) for traction of the front connecting seat (3) and the rear connecting seat (4), the lower end of the connecting arm (7) is connected with the lower base (1) through a connecting mechanism (9), and the traction mechanism (8) is provided with a pulley block.

2. The scissor jack of claim 1, wherein: the traction mechanism (8) comprises a shell (81), two movable pulley blocks (82), two fixed pulley blocks (83), a rotating shaft (85), two reels (86) and a driving mechanism (87), a rotating shaft (85) is arranged on the shell (81), a reel (86) is arranged in the shell (81) of the rotating shaft (85), the front end and the rear end of the shell (81) are respectively provided with a fixed pulley block (83), the inner sides of the front connecting seat (3) and the rear connecting seat (4) are respectively provided with a movable pulley block (82), the movable pulley block (82) and the fixed pulley block (83) which correspond to each other in the front-back direction form a pulley block, the pulley blocks are all provided with steel wire ropes (84), the winding ends of the steel wire ropes (84) penetrate through the side wall of the shell (81) and are fixedly connected with corresponding reels (86), and a driving mechanism (87) for driving the rotating shaft (85) to rotate is arranged on the shell (81).

3. A scissor jack as claimed in claim 2, wherein: actuating mechanism (87) are including crank (871), axis body (872), driving gear (873) and driven gear (874), the outer end of axis body (872) is equipped with crank (871), the inner of axis body (872) is equipped with driving gear (873), driving gear (873) are connected with driven gear (874) meshing of establishing on axis of rotation (85).

4. A scissor jack as claimed in claim 3, wherein: the gear ratio of the driving gear (873) to the driven gear (874) is: 1:5.

5. The scissor jack of claim 1, wherein: coupling mechanism (9) include slide rail (91), slide (92) and fixed establishment (93), slide rail (91) are established under on base (1), slidable slide (92) are installed in the cooperation on slide rail (91), be equipped with on slide (92) with slide rail (91) plug-in connection's fixed establishment (93).

6. The scissor jack of claim 5, wherein: fixed establishment (93) include the bolt body (931), the cover body (932), first spring (933), second spring (934), protruding (935), screw rod (936), nut (937) and retaining ring (938), the cover body (932) is established on slide (92), be equipped with the bolt body (931) in the cover body (932), be equipped with retaining ring (938) in the upper end of the cover body (932), the bolt body (931) is equipped with protruding (935) in the cover body (932), be equipped with first spring (933) on bolt body (931) between protruding (935) and retaining ring (938), the upper end of bolt body (931) is equipped with screw rod (936), be equipped with nut (937) on screw rod (936), be equipped with second spring (934) that both ends contradict respectively on the cover body (932) and nut (937) on bolt body (931).

7. The scissor jack of claim 6, wherein: the lower extreme of bolt body (931) is the inclined plane, the upper end of slide rail (91) is equipped with evenly distributed and inserts end matched with inserting groove (94) with bolt body (931).