CN207759967U

CN207759967U - A kind of jack with cam primary and secondary rod structure

Info

Publication number: CN207759967U
Application number: CN201820081243.6U
Authority: CN
Inventors: 安冬
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-01-18
Filing date: 2018-01-18
Publication date: 2018-08-24
Anticipated expiration: 2028-01-18

Abstract

The utility model provides a kind of jack with cam primary and secondary rod structure,Including upper loading arm (1),Lower crane arm (2),Square steel (3),Lanyard (4) and traction rope (5),The upper loading arm (1) includes centering block (9),Contact block (6),First pin (7),Second pin (8),Third pin,Pin (33),Idler wheel (10) and load-bearing arm body (11),The lower crane arm (2) includes lanyard block (12),Lifting arm body (13),Lifting lever (14),Lifting cam (15),4th pin (16),5th pin (17),The sliding cam (18) of limit and spring (19),It is equipped with square steel mouth (20) in the lifting arm body (13) and load-bearing arm body (11),Square steel (3) passes through the square steel mouth (20),The jack has cam primary and secondary rod structure,It is good with stability,It is safe,It is easy to use,Its light structure is firm,Flexibility and reliability,One people can carry and operate.

Description

A kind of jack with cam primary and secondary rod structure

Technical field

The utility model is related to a kind of jack, and in particular to a kind of jack with cam primary and secondary rod structure.

Background technology

Jack is auto repair or changes one of essential tool when tire, and existing jack is largely that hydraulic pressure passes Dynamic and screw-driven, lifting height are constrained by what self structure size was limited.

Utility model content

The purpose of this utility model is to provide a kind of jack with cam primary and secondary rod structure, are different from hydraulic drive And screw-driven, including upper loading arm, lower crane arm, square steel, lanyard and traction rope, the upper loading arm include centering block, contact Block, the first pin, the second pin, third pin, idler wheel and load-bearing arm body, the lower crane arm include lanyard block, crane arm The sliding cam of main body, lifting lever, lifting cam, the 4th pin, the 5th pin, limit and spring, the lifting arm body and load-bearing Square steel mouth is equipped in arm body, square steel passes through the square steel mouth.

The front end of the lower lifting arm body be equipped with the first pin hole, lower end be equipped with the second pin hole, middle part set there are two threading Hole, lower part are fixed with extension bar, and sliding limited block is being equipped with close to the lower right for wearing square steel mouth；Lifting cam passes through the first pin It is fixed in the first pin hole of lifting body front end, lifting lever is fixed on lifting cam outer end by third pin, and limit cunning is convex In the second pin hole for taking turns the lower end for being fixed on lifting arm body by the second pin, spring is socketed on the extension bar, spring Lower end be socketed with lanyard block.

The front end of the upper load-bearing arm body be equipped with the 4th pin hole, lower section be equipped with connecting rod, the back lower place be equipped with U-shaped hook, by The nearly upper left for wearing square steel mouth and bottom right are respectively there are one limited block is slided, and one end of fixed link is equipped with the 5th pin hole, and contact block passes through Pin is fixed in the 4th pin hole of load-bearing arm body, and is welded as a whole with load-bearing arm body, and rolling is fixed in the lower end of contact block Wheel, the centering block are fixed on by the 5th pin in the 5th pin hole.

Described traction rope one end hanging sleeve on lanyard block, draw both threads and be each passed through two threading holes, the other end by middle part Hung in U-shaped hook when lowering action, hung on hook when derricking motion.

Described lanyard one end is pullled on centering block, and the other end is fixed in U-shaped hook.

The beneficial effects of the utility model：

The utility model has cam primary and secondary rod structure, tool by providing a kind of new structural jack, the jack Have that stability is good, safe, easy to use, light structure is firm, flexibility and reliability, and a people can carry and operate；

It is simple to manufacture, lifting total height is largely determined by square steel length, breaks away from existing product lifting height by itself The constraint of structure size limitation.

Description of the drawings

The utility model will be further described below with reference to the accompanying drawings.

Fig. 1 is the overall structure diagram for the jack that the utility model has cam primary and secondary rod structure；

Fig. 2 is the structural schematic diagram of the utility model loading arm；

Fig. 3 is the structural schematic diagram of the utility model crane arm；

Fig. 4 is the structural schematic diagram of the utility model load-bearing arm body；

Fig. 5 is the structural schematic diagram of the utility model lifting arm body；

Fig. 6 is the structural schematic diagram of the utility model contact block；

Fig. 7 is the structural schematic diagram of the utility model lanyard block；

Fig. 8 is the structural schematic diagram of the utility model lifting lever；

Fig. 9 is the structural schematic diagram of the utility model lifting cam

Figure 10 is the structural schematic diagram of the sliding cam of the utility model limit；

Figure 11 is the structural schematic diagram of the utility model idler wheel；

Figure 12 is the structural schematic diagram of the utility model centering block.

Specific implementation mode

A kind of jack with cam primary and secondary rod structure, including upper loading arm 1, lower crane arm 2, square steel 3,4 and of lanyard Traction rope 5, the upper loading arm 1 include centering block 9, contact block 6, the first pin 7, the second pin 8, third pin, 10 and of idler wheel Load-bearing arm body 11, the lower crane arm 2 include lanyard block 12, lifting arm body 13, lifting lever 14, lifting cam 15, the Four pins 16, the 5th pin 17, limit slide cam 18 and spring 19, are equipped in the lifting arm body 13 and load-bearing arm body 11 Square steel mouth 20, square steel 3 pass through the square steel mouth 20.

The front end of the lifting arm body 13 is equipped with the first pin hole 21, and lower end is equipped with the second pin hole 22, there are two middle part is set Threading hole 23, lower part are fixed with extension bar 24, and sliding limited block 25 is being equipped with close to the upper left and lower right for wearing square steel mouth 20；It is Slide the effect of limit；Dead point is two sides of the lower-left and upper right of the square steel mouth, when crane arm leave locking dead point and by When sliding limit contact square steel 3, it can be slided along square steel 3, upper loading arm also has such structure, plays the role of same.It rises The top half of weight cam 15 has two protrusions in upper left and upper right, when lifting cam is rotated clockwise to upper left protrusion touching contact When block 6, lifting cam can not rotate clockwise；When lifting cam, which rotates counterclockwise to upper right protrusion, touches contact block 6, lifting Cam can not rotate counterclockwise.

Lifting cam 15 is fixed on by the first pin 7 in the first pin hole 21 of lifting body front end, and lifting lever 14 is logical It crosses third pin and is fixed on 15 outer end of lifting cam, limit sliding cam 18 and be fixed under lifting arm body 13 by the second pin 8 In second pin hole 22 at end, spring 19 is socketed on the extension bar 24, and the lower end of spring 19 is socketed with lanyard block 12.

The front end of the load-bearing arm body 11 is equipped with the 4th pin hole 26, and lower section is equipped with connecting rod 27, and the back lower place is equipped with U-shaped hook 28, close to the upper left and bottom right for wearing square steel mouth 20, respectively there are one sliding limited blocks 29, one end of connecting rod 27 is equipped with the 5th pin hole 30, contact block 6 is fixed on by pin 33 in the 4th pin hole 26 of load-bearing arm body, then along load-bearing arm body by contact block 6 It is welded as a whole with load-bearing arm body 11, the lower end fixed idler whell 10 of contact block 6, the centering block 9 is fixed by the 5th pin 17 In the 5th pin hole 30, contact block is the part contacted with weight.For centering block 9 in derricking motion, being pullled by lanyard cannot be random It swings.

5 one end hanging sleeve of the traction rope is on lanyard block 12, and middle part draws both threads and is each passed through two threading holes 23, separately One end hung in U-shaped hook 28 when lowering action, when carrying out derricking motion, hangs on hook 31.

4 one end of the lanyard is pullled on centering block 9, and the other end is fixed in U-shaped hook 28.

Centering block：In derricking motion, is pullled and cannot arbitrarily be swung by lanyard.

It after contact block 6 is welded as a whole with load-bearing arm body 11, is moved with load-bearing arm body, hanging down in contact block 6 Straight downward long strip block is limited block, is the stop spacing that lifting cam rotates counterclockwise；6 left side of contact block is that lifting is convex in itself Wheel rotates clockwise stop spacing.

Lifting objects act：When outer force effect lifting lever 14 rotates clockwise, linkage lifting cam 15 does up time Needle rotates, at this point, the upper fixed idler wheel 10 in 6 lower end of apical grafting contact block because of the rotation of lifting cam 15, makes crane arm integrally do It rotates clockwise；When the rotation of lifting arm body 13 contacts square steel 3 to sliding limited block 29, upper lifting arm body 13 can not continue It rotates clockwise, and because the upper top idler wheel 10 that continues to rotate clockwise of lifting cam 15 carries out upward sliding action.

When lifting cam 15 is rotated clockwise to upper left protrusion touching contact block 6 or lifting lever 14 stops clockwise When rotation, derricking motion stops.

When lifting lever 14 is rotated counterclockwise action by external force, load-bearing arm body 11 due to weight downward pressure incline by moment Tiltedly so that 11 dead point of load-bearing arm body contacts square steel, and stuck cannot move downward of load-bearing arm body 11 and stopping at this time acting.

Lifting cam 15 generates distance with loading arm idler wheel 10 at this time.

The linkage lifting cam 15 that rotates counterclockwise of lifting lever 14 rotates counterclockwise.When turning to inverse rotation stop spacing When, lifting cam 15 can not continue to rotate, and because the external force that lifting lever 14 is received continues, external force at this time becomes upward drawing Power, and so that lower crane arm 2 is whole and rotate clockwise, when lifting arm body 13 goes to sliding limit contact square steel 3, lower Weighing arm 2 can not rotate and do sliding and make, and when above sliding to lifting cam 15 and loading arm idler wheel 10 and contacting, can not continue upper cunning.

External force pushes lifting lever 14, and lifting arm body 13 is tilted to 15 side of lifting cam at this time so that crane arm master 13 dead point of body contacts square steel, and stuck cannot move downward of lifting arm body 13 and stopping act, and derricking motion terminates to enter at this time Next derricking motion cycle.

Lowering action：After having executed a derricking motion, first limit cunning cam 18 is set one's teeth on edge push away traction rope 5 manually, then will The pull-up of traction rope 5 is hung at loading arm U-shaped hook 28, then unclamps the sliding cam 18 of limit, limits sliding cam 18 by self gravitation effect, Automatic rotation is so that contact traction rope 5 of setting one's teeth on edge；The limited sliding effect of cam 18 of traction rope 5 at this time can not pull up, i.e.,：Upper load-bearing Arm 1 in derricking motion can not whole upward sliding, and can only rotate clockwise；Unclamp the lanyard 4 of centering block 9 so that centering block 9 can To be done autonomous rotation by its own gravity；External force makes lifting lever 14 rotate clockwise, that is, executes derricking motion, and because at this time Loading arm 1 can only rotate clockwise；When rotation to sliding limited block 29 when contact square steel 3 when, can not after rotation, and at this point, Centering block 9 obtains sufficiently large rotation space and independently turns to and contacted and stop motion on lower crane arm hook 31；Stopping is applied Lifting lever 14 is added to rotate clockwise external force.At this point, upper loading arm 1 is done rotation counterclockwise by weight pressure so that upper load-bearing Arm 1 forms gun iron link by centering block 9 and lifting arm body 13, and upper loading arm 1 can not be threaded to dead point, and crane arm 2 is put The pressure of block slightly rotates clockwise, i.e.,：13 dead point whiz square steel 3 of lifting arm body, you can complete under the pressure effect of weight It is acted at the entire lowering of cam master and secondary rod jack.

It is matching used with traction rope 5 that lanyard block 12 and limit, which slide cam 18,.When lifting, traction rope 5 not with upper loading arm Hang over together, only lowering action when, traction rope is hung on upper loading arm.

Above content is only to the utility model structure example and explanation, the technology people of affiliated the art Member makes various modifications or additions to the described embodiments or substitutes by a similar method, without departing from reality With novel structure or beyond the scope defined by this claim, all should belong to the protection range of the utility model.

Claims

1. a kind of jack with cam primary and secondary rod structure, including upper loading arm (1), lower crane arm (2), square steel (3), lanyard (4) and traction rope (5), the upper loading arm (1) include centering block (9), contact block (6), the first pin (7), the second pin (8), Third pin, pin (33), idler wheel (10) and load-bearing arm body (11), the lower crane arm (2) includes lanyard block (12), lifting The sliding cam (18) of arm body (13), lifting lever (14), lifting cam (15), the 4th pin (16), the 5th pin (17), limit and Spring (19), square steel mouth (20) is equipped on the lifting arm body (13) and load-bearing arm body (11), and square steel (3) passes through described Square steel mouth (20).

2. a kind of jack with cam primary and secondary rod structure according to claim 1, which is characterized in that the crane arm The front end of main body (13) is equipped with the first pin hole (21), and lower end is equipped with the second pin hole (22), and middle part is set there are two threading hole (23), under Portion is fixed with extension bar (24), and right end has hook (31), close to wearing the upper left of square steel mouth (20) and lower right is respectively provided with sliding Limited block (25)；Lifting cam (15) is fixed on by the first pin (7) in the first pin hole (21) of lifting body front end, lifting Lever (14) is fixed on lifting cam (15) outer end by third pin, limits sliding cam (18) and is fixed on by the second pin (8) In the second pin hole (22) of the lower end of lifting arm body (13), spring (19) is socketed on the extension bar (24), spring (19) Lower end be socketed with lanyard block (12).

3. a kind of jack with cam primary and secondary rod structure according to claim 1, which is characterized in that the loading arm The front end of main body (11) is equipped with the 4th pin hole (26), and lower section is equipped with connecting rod (27), and the back lower place is equipped with U-shaped hook (28), is worn close Respectively there are one sliding limited block (29), one end of connecting rod (27) is equipped with the 5th pin hole (30) for the upper left and bottom right of square steel mouth (20), Contact block (6) is fixed on by pin (33) in the 4th pin hole (26) of load-bearing arm body, then by contact block (6) and loading arm Main body (11) is welded as a whole along loading arm, and the lower end of contact block (6) passes through the 4th pin (16) fixed idler whell (10), contact block (6) it is limited block (32) that the strip of lower end, which is long strip block, and the centering block (9) is fixed on the 5th pin hole by the 5th pin (17) (30) in.

4. according to a kind of jack with cam primary and secondary rod structure of claims 1 to 3 any one of them, which is characterized in that Traction rope (5) one end hanging sleeve on lanyard block (12), draw both threads and be each passed through two threading holes (23) by middle part, draws The other end of rope is hung over when carrying out lowering action in U-shaped hook (28), when carrying out derricking motion, is hung on hook (31).

5. according to a kind of jack with cam primary and secondary rod structure of claims 1 to 3 any one of them, which is characterized in that Described lanyard (4) one end is pullled on centering block (9), and the other end is fixed in U-shaped hook (28).