CN203144001U

CN203144001U - Jack with combined supporting arms

Info

Publication number: CN203144001U
Application number: CN 201320101274
Authority: CN
Inventors: 叶培玉
Original assignee: NINGBO TIANYI SHAFT CO Ltd
Current assignee: NINGBO TIANYI SHAFT CO Ltd
Priority date: 2013-03-06
Filing date: 2013-03-06
Publication date: 2013-08-21
Anticipated expiration: 2023-03-06

Abstract

The utility model discloses a jack with combined supporting arm. The jack comprises a first supporting arm, a second supporting arm, a third supporting arm and a fourth supporting arm, wherein the third supporting arm comprises a first part and a second part; the second part is positioned in the first part and is provided with a fourth through hole; a fourth nut is fixedly arranged in the fourth through hole; the first part is provided with at least two fifth through holes; a third bolt is also arranged on the jack, penetrates through the fourth through hole and one fifth through hole and is in threaded connection with the fourth nut; and the structure of the fourth supporting arm is similar to that of the third supporting arm. According to the jack disclosed by the utility model, a common handle is used to shake to enable the jack to elevate; and the jack is enabled to directly ascend to a certain height by directly pulling up the supporting arms upwards. A base is prevented from slipping by rubber teeth of the base; and objects in a pallet are prevented from falling off by a cross groove in the pallet.

Description

A kind of jack of combined support arm

Technical field

The utility model belongs to a kind of jack of combined support arm.

Background technology

Jack is that a kind of the top with rigidity lifted part as equipment, the light little weight-lifting equipment of jacking weight in stroke by top bracket or bottom claw.Can be divided into 3 kinds of tooth bar jack, lifting screw and hydraulic jacks by architectural feature.Jack is the simplest weight-lifting equipment of a kind of lifting highly little (less than 1m).It has two kinds of mechanical type and fluid pressure types.The mechanical type jack has rack-and-pinion and spiral two kinds again, because hoisting capacity is little, the operation effort generally only is used for flight-line maintenance work, and is inapplicable in repairing the bridge process.Fluid pressure type jack structure compactness, stable working has self-locking action, so use extensively.Its shortcoming is that lifting is highly limited, and lifting velocity is slow.The kind of car jack can be divided into four kinds of tooth bar jack, lifting screw and hydraulic jack and inflatable jacks.Car jack commonly used can only rely on and shake handle jack is risen in use, by this mode that can only jack be risen with handle, the ascending velocity of jack is had certain limitation, and is relatively slow.Need a kind of certain altitude that can directly rise, do not influence the jack that handle shakes the rising mode again.

Summary of the invention

The utility model provides a kind of and hold-down arm directly can be lifted the jack of rising at the prior art deficiency.

In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals: a kind of jack of combined support arm, comprise first hold-down arm, second hold-down arm, the 3rd hold-down arm, the 4th hold-down arm, described first hold-down arm and the 3rd hold-down arm are flexibly connected by first active connection part, described second hold-down arm and the 4th hold-down arm are flexibly connected by second active connection part, first active connection part and second active connection part are all passed by a screw rod, described first hold-down arm and second hold-down arm support and connection place are provided with base, and described the 3rd hold-down arm and the 4th hold-down arm junction are provided with pallet.Described the 3rd hold-down arm comprises first parts and second parts, described second parts are positioned at first parts, described second parts offer through hole No. four, described No. four through holes fixedly have nut No. four, described first parts offer at least two No. five through holes, also be provided with bolt No. three, described No. three bolts pass No. four through holes and are connected with No. four nut threads with No. five through holes, described the 4th hold-down arm comprises the 3rd parts and the 4th parts, described the 4th parts are positioned at the 3rd parts, described the 4th parts offer through hole No. six, described No. six through holes fixedly have nut No. six, described the 3rd parts offer at least two No. seven through holes, also are provided with bolt No. four, and described No. four bolts pass No. six through holes and are connected with No. six nut threads with No. seven through holes.

In the technique scheme, described base is arranged with the rubber tooth.Preventing that base and ground from skidding causes safety misadventure.

In the technique scheme, described pallet is provided with cross recess.Object is withstood in the cross recess, prevent that object from coming off in the pallet slip.

The utility model compared with prior art, have following beneficial effect: the utility model can not only use handle commonly used to shake and make the jack rising, can also rely on directly up pull-up hold-down arm, make the jack certain height that directly rises, after shake handle again and make it to contact with at the bottom of the car, accelerate operating speed, greatly improved work efficiency.Base rubber tooth prevents that base from skidding.The cross recess of pallet prevents that the object on the pallet from coming off.

Description of drawings

Fig. 1 is scissors jack scheme drawing.

Fig. 2 is embodiment 1 utility model scheme drawing.

Fig. 3 is first parts and the second isolation of components scheme drawing of the 3rd hold-down arm among the embodiment 1.

Fig. 4 is that No. three bolts, No. four through holes, No. five through holes separate scheme drawing with No. four nuts among the embodiment 1.

Fig. 5 is the 3rd parts and the 4th isolation of components scheme drawing of the 4th hold-down arm among the embodiment 1.

Fig. 6 is that No. four bolts, No. six through holes, No. seven through holes separate scheme drawing with No. six nuts among the embodiment 1.

Fig. 7 is embodiment 2 utility model scheme drawings.

Fig. 8 separates scheme drawing for pallet among the embodiment 2 with the 3rd hold-down arm, the 4th hold-down arm.

Fig. 9 is that bolt, one number service hole, No. two through holes separate scheme drawing with a nut among the embodiment 2.

Figure 10 is that No. two bolts, one number service hole, No. three through holes separate scheme drawing with No. two nuts among the embodiment 2.

Figure 11 is the pallet schematic top plan view.

The specific embodiment

Below in conjunction with accompanying drawing and the specific embodiment the utility model is described in further detail: embodiment 1: referring to Fig. 1 ~ 6, a kind of jack of combined support arm, comprise first hold-down arm 1, second hold-down arm 2, the 3rd hold-down arm 3, the 4th hold-down arm 4, described first hold-down arm 1 and the 3rd hold-down arm 3 are flexibly connected by first active connection part 17, described second hold-down arm 2 and the 4th hold-down arm 4 are flexibly connected by second active connection part 18, first active connection part 17 and second active connection part 18 are all passed by a screw rod 17, described first hold-down

arm

1 and 2 support and connection place of second hold-down arm are provided with base 5, and described the 3rd hold-down arm 3 and the 4th hold-down arm 4 junctions are provided with pallet 6.

Described the 3rd hold-down arm 3 comprises first parts 110 and second parts 111, described second parts 111 are positioned at first parts 110, described second parts 111 offer through hole 113 No. four, described No. four through holes 113 fixedly have nut 115 No. four, No. four nuts 115 fixedly are welded on No. four through holes 113, and the Kong Yusi through hole 113 of No. four nuts 115 is corresponding.Described first parts 110 offer 114, No. five through holes 114 of at least two No. five through holes and evenly distribute, and are distributed on the same straight line.Also be provided with bolt 112 No. three, described No. three bolts 112 pass No. four through holes 113 and No. five through holes 114 are threaded with No. four nuts 115.Described the 4th hold-down arm 4 comprises the 3rd parts 120 and the 4th parts 121, described the 4th parts 121 are positioned at the 3rd parts 120, described the 4th parts 121 offer through hole 123 No. six, described No. six through holes 123 fixedly have nut 125 No. six, No. six nuts 125 fixedly are welded on No. six through holes 123, and the Kong Yuliu through hole 123 of No. six nuts 125 is corresponding.Described the 3rd parts 120 offer 124, No. seven through holes 124 of at least two No. seven through holes and evenly distribute, and are distributed on the same straight line.Also be provided with bolt 122 No. four, described No. four bolts 122 pass No. six through holes 123 and No. seven through holes 124 are threaded with No. six nuts 125.

Under the normal circumstances, No. three bolts 112 are threaded first parts 110 than No. four nuts 115 on No. four through holes 113 of No. five through holes 114 of below and second parts 111, here than the below near ground one end.Same, No. four bolts 122 are threaded the 3rd parts 120 than No. six nuts 125 on No. six through holes 123 of No. seven through holes 124 of below and the 4th parts 121.

When raising height, only need No. three bolts 112 are taken out, up mobile from No. five through holes 114 of below, determine the position after, again No. three bolts 112 are fixed first parts 110 and second parts 111, same mode fixes the 3rd parts 120 and the 4th parts 121.The distance of No. five mobile through holes 114 should be identical with the distance of No. seven through holes 124 that move, and makes pallet 6 held stationary states.

The utility model can not only use handle commonly used to shake and make the jack rising, can also rely on directly up pull-up hold-down arm, make the jack certain height that directly rises, after shake handle again and make it to contact with at the bottom of the car, accelerate operating speed, greatly improved work efficiency.

Embodiment 2: compare with embodiment 1, difference is, described jack fast rise mode difference, and all the other are all identical.

Referring to Fig. 1, Fig. 7 ~ 11, offer at least three one number service holes 210 on the described pallet 6, evenly diffuse out a plurality of one number services hole 210 to both sides by the one number service hole 210 of pallet 6 center positions, the one number service hole of offering 210 is more many, and the height that can select is just more many.Described the 3rd hold-down arm 3 offers through hole 220 No. two, described No. two 220 through holes fixedly have nut 211 No. one, described the 4th hold-down arm 4 offers through hole 230 No. three, described No. three through holes 230 fixedly have nut 221 No. two, described the 3rd hold-down arm 3 is fixed on the described pallet 6 by a bolt 215 with one number service hole 210 by No. two through holes 220, and a described bolt 215 is threaded with a nut 211.Described the 4th hold-down arm 4 is fixed on the described pallet 6 by No. two bolts 225 with one number service hole 210 by No. three through holes 230, and described No. two bolts 225 are threaded with No. two nuts 221.No. one bolt 215 is identical with No. two bolt 225 effects.The 3rd hold-down arm 3 and the 4th hold-down arm 4 move to 210 positions, one number service hole of same distance simultaneously to both sides, be fixed on the one number service hole 210 height of the jack that directly rises.

Described base 5 is arranged with the rubber tooth.Preventing that base 5 and ground from skidding causes safety misadventure.Described pallet 6 is provided with a meter word groove 280.Object is withstood in meter word groove 280, prevent that object from coming off in pallet 6 slips.

During use, bolt 215 of the 3rd hold-down arm 3 and No. two bolts 225 of the 4th hold-down arm 4 are extracted out, mobile the 3rd hold-down arm 3 and the 4th hold-down arm 4, mobile one number service pitch-row off normal put identical, fix the 3rd hold-down arm 3 with a bolt 215, fix hold-down arm 4 No. four with No. two bolts 225, the jack that rises is again slowly aimed at object.Behind the complete operation, non-restoring the 3rd hold-down arm 3 and the 4th hold-down arm 4 positions can directly jack be descended; Also can descend and restore the 3rd hold-down arm 3 and the 4th hold-down arm 4 positions behind the jack.

Claims

1. the jack of a combined support arm, comprise first hold-down arm (1), second hold-down arm (2), the 3rd hold-down arm (3), the 4th hold-down arm (4), described first hold-down arm (1) is flexibly connected by first active connection part (17) with the 3rd hold-down arm (3), described second hold-down arm (2) is flexibly connected by second active connection part (18) with the 4th hold-down arm (4), first active connection part (17) is all passed by a screw rod (7) with second active connection part (18), described first hold-down arm (1) is provided with base (5) with second hold-down arm (2) support and connection place, described the 3rd hold-down arm (3) is provided with pallet (6) with the 4th hold-down arm (4) junction, it is characterized in that: described the 3rd hold-down arm (3) comprises first parts (110) and second parts (111), described second parts (111) are positioned at first parts (110), described second parts (111) offer No. four through holes (113), described No. four through holes (113) fixedly have No. four nuts (115), described first parts (110) offer at least two No. five through holes (114), also be provided with No. three bolts (112), described No. three bolts (112) pass No. four through holes (113) and No. five through holes (114) are threaded with No. four nuts (115), described the 4th hold-down arm (4) comprises the 3rd parts (120) and the 4th parts (121), described the 4th parts (121) are positioned at the 3rd parts (120), described the 4th parts (121) offer No. six through holes (123), described No. six through holes (123) fixedly have No. six nuts (125), described the 3rd parts (120) offer at least two No. seven through holes (124), also be provided with No. four bolts (122), described No. four bolts (122) pass No. six through holes (123) and No. seven through holes (124) are threaded with No. six nuts (125).

2. the jack of a kind of combined support arm as claimed in claim 1, it is characterized in that: described base (5) is arranged with the rubber tooth.

3. the jack of a kind of combined support arm as claimed in claim 1, it is characterized in that: described pallet (6) is provided with cross recess (20).