CN102633201B

CN102633201B - Wheel structure of jack

Info

Publication number: CN102633201B
Application number: CN 201210130146
Authority: CN
Inventors: 石永良; 唐洁; 唐循申; 王利忠
Original assignee: Changshu Tongrun Auto Accessory Co Ltd
Current assignee: Changshu Tongrun Auto Accessory Co Ltd
Priority date: 2012-04-28
Filing date: 2012-04-28
Publication date: 2013-09-25
Anticipated expiration: 2032-04-28
Also published as: CN102633201A

Abstract

The invention relates to a wheel structure of a jack, belonging to the technical field of hydraulic hoisting industry. The wheel structure comprises a wheel frame and a wheel body, wherein the wheel frame comprises a seat disc and a pair of wheel arms, and a screw rod is arranged in the center position of the seat disc; and the wheel body is arranged between the pair of wheel arms. The wheel structure is characterized in that a rolling ball groove is arranged at the edge part on a chassis and on one side with the back to the wheel arms, a group of rolling balls are arranged in the groove, a protective cover is matched and arranged on the chassis, a screw rod abdication hole is formed at the center of the protective cover, a rolling ball concave path is arranged at the edge part of the protective cover and in the position corresponding to the rolling balls, and the screw rod penetrates through the screw rod abdication hole and is equipped with a nut; and wheel body shaft holes are respectively formed on the pair of wheel arms and in the positions which correspond to each other, a wheel body shaft is arranged in the pair of wheel body shaft holes by penetration, the wheel body is arranged on the wheel body shaft through a central shaft hole of the wheel body, a snap spring groove is formed at the one end part of the wheel body shaft, and a snap spring is arranged on the snap spring groove. The wheel structure has the advantages of ensuring labor-saving operation, facilitating mounting and maintenance, facilitating manufacturing, saving materials and prolonging service life.

Description

The wheel structure of jack

Technical field

The invention belongs to Hydraulic for lifting load industrial technology field, be specifically related to a kind of wheel structure of jack

Background technology

The technical information of jack can be seen in disclosed Chinese patent literature in a large number, " a kind of horizontal hydraulic jack with the self locking safety device " and " the all-in-one-piece quick low level wheel type hydraulic jack of a kind of wallboard " and " hydraulic jack that can show load and overload warning " that CN201520617U discloses of CN201737648U introduction that provide with " the horizontal jack of electric hydaulic ", the CN201756434U that recommend as Granted publication CN2445994Y that exemplifies are provided, etc.But, why in disclosed patent and non-patent literature such as periodical, paper etc., do not see the technical information that has as the wheel structure of jack member, perhaps be based on the following factor that is not limited to: one, as long as wheel can satisfy the supporting of jack body and the requirement of being rolled; Its two, the structure-design technique of wheel is tending towards saturated, is difficult to have innovation and/or super space again; Its three, wheel is excluded usually outside the technical index of the quality good or not of considering jack.Yet these are main just because of being subjected to, objective factor and cause the wheel of at present public jack to have the following technical matters of being ignored by industry: the one, because poor to the self-adaptation of direction conversion, for example be difficult to satisfy any changed course of 360 ° of scopes, therefore cause the user to require great effort; The 2nd, because the mutual dismounting trouble between wheel (being wheel body) and the wheel carrier (also claiming wheel seat) in case therefore wheel causes loss, can only be replaced wheel carrier in the lump, thereby be caused waste, run counter to economizing type, energy-saving economic spirit that the present whole society advocates; The 3rd, therefore not only heavy because wheel carrier adopts the iron plate punch forming, and make trouble, be unfavorable for industrial amplification production.

In view of the deficiency of above-mentioned prior art, the applicant has done useful design, and technical scheme described below produces under this background

Summary of the invention

Top priority of the present invention be to provide a kind of help significantly to improve the comformability of direction used ensure operator's rapid operation and be conducive to improve the ability to dismantle between wheel body and the wheel carrier and the mat both sides just install and according to the wheel structure of the jack that needs to change wheel body.

Another task of the present invention is to provide a kind of wheel structure that makes things convenient for manufacturing and use the jack that satisfies the industrial amplification production requirement that is of value to.

A task more of the present invention be to provide a kind of have be convenient to reasonable economical with materials and can ensure intensity and use the wheel structure of the jack that embodies good service life.

Finish top priority of the present invention for embodiment, technical scheme provided by the invention is; A kind of wheel structure of jack comprises a wheel carrier, and this wheel carrier has an attic base and the extension that corresponds to each other and is formed in a pair of arm of taking turns on the attic base, and has one at the middle position of attic base and is used for the screw rod of captiveing joint with the roller mount on the jack body; One wheel body, this wheel body is arranged on described a pair of the wheel between the arm rotationally, characteristics are: on described chassis and constituting a ball grooves back to described edge of taking turns a side of arm, one group of ball is set in this ball grooves, this group ball is arranged in mode one by one around the circumferencial direction of ball grooves, and be equipped with a protecting cover on the chassis, the central authorities of this protecting cover have a screw rod resigning hole, and the edge of protecting cover and constitute the recessed road of a ball in the position corresponding to described ball, ball probes in the recessed road of ball, described screw rod passes described screw rod resigning hole and is equipped with a nut, protecting cover is matched with attic base and described ball is limited by this nut; A pair ofly take turns on the arm and respectively offer a wheel body axis hole in the position to correspond to each other described, placed one at a pair of wheel body axis hole and taken turns axon, described wheel body is arranged on the wheel axon rotationally by its central axis hole, and the end end in the wheel axon offers a jump ring groove, and the jump ring groove is provided with a jump ring.

Finish another task of the present invention for embodiment, technical scheme provided by the invention is: described chassis and the described a pair of arm of taking turns constitute integrative-structure each other to cast mode.

Finish a task more of the present invention for embodiment, technical scheme provided by the invention is: a pair ofly take turns on the arm and outward a side respectively constitutes a cavity described.

In a specific embodiment of the present invention, the middle position on described chassis offers the single-revolution axis hole, and the base portion expansion of described screw rod is established and constituted the single-revolution axle, this axis of revolution and revolution axis hole normal-running fit.

In another specific embodiment of the present invention, the shape of cross section of described roller groove is the C font, and the shape of cross section in the recessed road of described ball is the C font equally.

Technical scheme provided by the invention has following technique effect: one, owing to be provided with ball grooves on the chassis and in ball grooves, be provided with one group of ball, thereby can make wheel carrier do any rotation of 360 ° together with wheel body, thus rapid operation can be ensured; Its two, decrease and need replace the time when wheel body causes, as long as just remove jump ring and pull away the wheel axon replaceable, therefore be conducive to the comfort feature of installing and keeping in repair; Its three because chassis and a pair of arm of taking turns are constituted integrative-structure to cast mode, thereby can conveniently make, satisfy the industrial amplification production requirement; Its four owing to respectively constitute cavity on the arm a pair of the wheel, thereby not only can economical with materials, and the intensity that can promote the wheel arm, improve service life.

Description of drawings

Fig. 1 is embodiments of the invention structure and application examples scheme drawing.

Fig. 2 is the cutaway view of Fig. 1.

The specific embodiment

For the inspector that the makes Patent Office especially public can be expressly understood technical spirit of the present invention and beneficial effect more, the applicant general elaborates in the mode of embodiment below, but all be not restriction to the present invention program to the description of embodiment, any according to the present invention's design done only for pro forma but not substantial equivalent transformation all should be considered as technical scheme category of the present invention.

See also Fig. 1 and Fig. 2, provided a wheel carrier 1, this wheel carrier 1 is made of chassis 11 and a pair of arm 12 of taking turns.Shown in figure, chassis 11 is the shape of disc, 11 central authorities offer single-revolution axis hole 114 on the chassis, one screw rod 111 is arranged on this revolution axis hole 114, specifically: base portion (this base portion is an end that matches with the chassis 11) expansion at screw rod 111 is provided with single-revolution axle 1112, the section shape of this axis of revolution 1112 is convex shape, and matches with revolution axis hole 114.Again, chassis 11 back to an aforesaid a pair of side of taking turns arm 12 namely under the use state towards on the edge of a side constitute ring logical and section (can claim cross-sectional plane again) shape be the ball grooves 112 of C font, row is equipped with 1121, one groups of balls 1121 of one group of ball and arranges by one mode with one (one) each other in this ball grooves 112.Also be equipped with a protecting cover 113 on chassis 11, offer a screw rod resigning hole 1131 in the central authorities of this protecting cover 113, the upper end of aforesaid screw rod 111 is passed this screw rod resigning hole 1131 and is provided with a nut 1111 in the mode of screw thread fit.The edge of 11 circumferencial direction and constitute the recessed road 1132 of ball that a shape of cross section is the C font equally in the position corresponding to ball 1121 on the chassis.When aforesaid nut 1111 during to the clockwise direction turn, protecting cover 113 is matched, and by 1121 tube banks of 113 pairs of one group of balls of protecting cover with chassis 11, that is to say that to make one group of ball 1121 spacing between ball grooves 112 and the recessed road 1132 of ball.

Above mentioned a pair of take turns arm 12 extend with corresponding to each other be formed in chassis 11 under the use state (being shown position) towards under a side, take turns on the arm 12 and the position to correspond to each other is offered one at each and take turns arm axle hole 121, at this wheel arm axle hole 121 is interspersed with one and takes turns arm axle 122, offer a jump ring groove 1221 in this end end (leaning out the end that a pair of one of them of taking turns in the arm axle hole 121 taken turns arm axle hole 121) of taking turns arm axle 122, and this jump ring groove 1221 is provided with a jump ring 1222.

Certainly, if replace jump ring groove 1221 in an aforesaid end end of wheel arm axle 122 to offer cotter-pin hold, and spring cotter is replaced jump ring 1222, should be considered as equivalence so and replace and still belong to the present invention program's category.

The axis hole 21 that one wheel body 2 is offered by its central authorities and be arranged on the middle part of aforesaid axis body axle 122 is rotationally namely taken turns between the arm 12 a pair of.

Preferably, aforesaid chassis 11 and a pair of arm 12 of taking turns are namely cast mode with casting and constituted integrative-structure, and preferably use aluminum alloy to fill the post of chassis 11 and wheel arm 12, that is to say that whole wheel carrier 1 is cast by aluminum alloy materials to form.

Preferably, take turns on the arm 12 and outward a side respectively constitutes cavity 123 a pair of, but both economical with materials of the existence of cavity 123 can significantly strengthen the intensity of wheel arm 12 again.

Said structure ensures wheel carrier 1 together with any rotation of 360 ° of scopes of wheel body 2 works by one group of ball 1121, and with respect to prior art, the operator need not to put forward outstanding mode and helps wheel body 2 to do the changed course campaign of circumferencial direction, therefore has the effect of rapid operation; Again, when wheel body 2 is changed because of damage, change as long as remove jump ring 1222 and pull away wheel axon 122, therefore install and keep in repair very convenient.

Please continue to see Fig. 1 and Fig. 2, in Fig. 2, provide the wallboard 3 of jack body, constitute roller mount 31 at wallboard 3.When will be with the wheel of structure of the present invention and roller mount 31 fixedly the time, as long as the screw hole that is preset on the roller mount 31 is passed in the upper end of aforesaid screw rod 111, and it be fixing with roller mount 31 with screw rod 111 to add packing ring 113.

In sum, technical scheme provided by the invention has remedied the shortcoming in the prior art all sidedly, has finished the invention task, has embodied due technique effect, and therefore can yet be regarded as is a ultimate attainment technical scheme

Claims

1. A kind of wheel structure of jack, comprise a wheel carrier (1), this wheel carrier (1) has a chassis (11) and the extension that corresponds to each other is formed in a pair of arm (12) of taking turns on the chassis (11), and the middle position in chassis (11) has one and is used for the screw rod (111) of captiveing joint with the roller mount on the jack body; One wheel body (2), this wheel body (2) is arranged on described a pair of the wheel between the arm (12) rotationally, it is characterized in that: go up and constituting a ball grooves (112) back to described edge of taking turns a side of arm (12) in described chassis (11), one group of ball (1121) is set in this ball grooves (112), this group ball (1121) is arranged in mode one by one around the circumferencial direction of ball grooves (112), and (11) are equipped with a protecting cover (113) on the chassis, the central authorities of this protecting cover (113) have a screw rod resigning hole (1131), and the edge of protecting cover (113) and constitute the recessed road of a ball (1132) in the position corresponding to described ball (1121), ball (1121) probes in the recessed road of ball (1132), described screw rod (111) passes described screw rod resigning hole (1131) and is equipped with a nut (1111), protecting cover (113) is matched with chassis (11) and described ball (1121) is limited by this nut (1111); Respectively offer a wheel body axis hole (121) on the arm (12) and in the position to correspond to each other described a pair of the wheel, placed one at a pair of wheel body axis hole (121) and taken turns axon (122), described wheel body (2) is arranged on the wheel axon (122) rotationally by its central axis hole (21), and the end end in wheel axon (122) offers a jump ring groove (1221), and jump ring groove (1221) is provided with a jump ring (1222).

2. The wheel structure of jack according to claim 1 is characterized in that described chassis (11) and the described a pair of arm (12) of taking turns constitute integrative-structure each other to cast mode.

3. The wheel structure of jack according to claim 1 and 2 is characterized in that a pair ofly taking turns that arm (12) is gone up and outward a side respectively constitutes a cavity (123) described.

4. The wheel structure of jack according to claim 1, it is characterized in that the middle position in described chassis (11) offers single-revolution axis hole (114), the base portion expansion of described screw rod (111) is established and is constituted single-revolution axle (1112), this axis of revolution (1112) and revolution axis hole (114) normal-running fit.

5. The wheel structure of jack according to claim 1 it is characterized in that the shape of cross section of described ball grooves (112) is the C font, and the shape of cross section in the recessed road of described ball (1132) is the C font equally