CN206171564U - Plumbing arm assembly between dual -pull -rod a steering system's bearing wherein - Google Patents

Abstract

The utility model provides a plumbing arm assembly between dual -pull -rod a steering system's bearing wherein, including the installing support, the plumbing arm back shaft, middle plumbing arm, the inner bearing, the outer bearing, the antifriction separation blade, the installing support includes the support body and supports the shaft hole, middle plumbing arm includes the plumbing arm body, the one end of plumbing arm body is connected with the rotatory end of plumbing arm, the back arm rotating shaft hole of hanging down has been seted up in the rotatory end of plumbing arm, the other end of plumbing arm body is connected with plumbing arm ball round pin end, the one end in back arm rotating shaft hole of hanging down has been seted up rather than communicating inner bearing mounting hole, the inner bearing mounting hole contacts with the outer peripheral face of inner bearing, the other end in back arm rotating shaft hole of hanging down has been seted up rather than communicating outer bearing mounting hole, the outer bearing mounting hole contacts with the outer peripheral face of outer bearing, plumbing arm back shaft drawing -in in proper order supports the shaft hole, the inner bearing, the back arm rotating shaft hole of hanging down, the outer bearing, through nut locking behind the antifriction separation blade. This design not only difficult wearing and tearing pine is spacious, uses in addition and safeguards simple and convenient, long service life.

Description

Plumbing arm assembly in the middle of the bearing-type of duplex pull rod steering

Technical field

This utility model belongs to automobile steering system technical field, more particularly to a kind of bearing-type of duplex pull rod steering Middle plumbing arm assembly, is primarily adapted for use in and solves the problems, such as that looseness easy to wear, O＆M be loaded down with trivial details, service life is short.

Background technology

Plumbing arm is the control unit that motion is accurately transmitted in the middle of the steering of automobile duplex pull rod steering.It is higher to reach System stiffness and accurate course changing control are very high to radial direction clearance requirement.Radial clearance is little, rotates difficult astringent；Radial clearance Greatly, easy looseness abnormal sound.The structure gapless adjustment link for adopting at present, gap ensures difficult, it is actually used during often have and turn Feed back to the problem of plumbing arm looseness, particularly bush type pitman arm looseness easy to wear, cannot eliminate as looseness is latter, need more Plumbing arm assembly is changed with solve problem, therefore operation and maintenance is relatively costly.In addition, phase of the middle plumbing arm support according to plumbing arm and vehicle frame To position relational design, after design use, the height of plumbing arm is just difficult to adjust support, plumbing arm in the middle of the steering of different automobile types Support Design is also different；Therefore, the versatility of plumbing arm support is poor in the middle of turning to, and the general drop for turning to middle plumbing arm slightly has Change need to just redesign and mold casting, and relatively costly, versatility is also poor.

Chinese patent, Authorization Notice No. is CN202138410U, and authorized announcement date is the utility model of on 2 8th, 2012 A kind of pitman arm assembly, including plumbing arm axle, support, plumbing arm are disclosed, plumbing arm includes plumbing arm body and its axle sleeve, the shape of plumbing arm body Shape is symmetrical with respect to the plane of symmetry that its upper end pin bore axis line and plumbing arm axle axis are formed, and plumbing arm body lower end head is laterally ellipse Circle, the axis of the lower end pin-and-hole left and right centered on major axis midpoint on the transverse of lower end head is adjustable, plumbing arm axle it is outer Control pad is provided with end stand rank, plumbing arm is assemblied on the plumbing arm axle between bracket end face and control pad by its axle sleeve, Adjust pad is provided between the end face and control pad of axle sleeve, the gap of plumbing arm axial direction is 0.1 millimeter, plumbing arm body lower end pin-and-hole head For laterally oval, the center of circle of lower end pin-and-hole can between the left and right centered on major axis midpoint is each 10 millimeters on the transverse Adjust.Although the utility model can adjust plumbing arm axial gap, it yet suffers from following defect：Plumbing arm axle in the utility model It is directly contact with plumbing arm, after plumbing arm assembly life-time service, plumbing arm can produce abrasion with plumbing arm axle, and in addition adjust pad is long-term Using damage also occurs, therefore, plumbing arm assembly can produce looseness because of abrasion, meanwhile, plumbing arm body is integrated with axle sleeve so that When damaging occurs in axle sleeve, it is not easy to safeguard, service life is shorter.

The content of the invention

The purpose of this utility model is to overcome present in prior art that looseness easy to wear, O＆M are loaded down with trivial details, use The defect and problem of short life, there is provided a kind of looseness not easy to wear, O＆M are easy, the duplex pull rod of long service life is turned to Plumbing arm assembly in the middle of the bearing-type of system.

To realize object above, technical solution of the present utility model is：A kind of bearing-type of duplex pull rod steering Middle plumbing arm assembly, including mounting bracket, plumbing arm support shaft, middle plumbing arm, the mounting bracket includes rack body and supports Axis hole, the middle plumbing arm includes plumbing arm body, and one end of the plumbing arm body is connected with plumbing arm round end, in plumbing arm round end Plumbing arm rotary shaft hole is offered, the other end of the plumbing arm body is connected with plumbing arm ball pin end, and the plumbing arm support shaft is worn successively Pass through nut check Jing after supporting shaft hole, plumbing arm rotary shaft hole；

The middle plumbing arm assembly also includes inner bearing, outer bearing, anti-attrition catch, and one end of the plumbing arm rotary shaft hole is opened It is provided with the inner bearing installing hole for communicating therewith, the diameter with diameter greater than plumbing arm rotary shaft hole of inner bearing installing hole, inner bearing peace Dress hole contacts with the outer peripheral face of inner bearing, and the other end of the plumbing arm rotary shaft hole offers the outer bearing for communicating therewith and installs Hole, the diameter with diameter greater than plumbing arm rotary shaft hole of outer bearing installing hole, outer bearing installing hole connects with the outer peripheral face of outer bearing Touch, the anti-attrition catch is located between outer bearing and nut, the plumbing arm support shaft passes successively supporting shaft hole, inner bearing, hangs down Pass through nut check after arm rotary shaft hole, outer bearing, anti-attrition catch.

A number median plane of the plumbing arm round end is parallel to each other with No. two median planes at plumbing arm ball pin end；

The plumbing arm round end include No. one end with No. two end, the plumbing arm ball pin end be 7 font structures, plumbing arm ball pin end Bending part be connected with plumbing arm body, the one end at plumbing arm ball pin end offers a ball pin hole, the other end at plumbing arm ball pin end No. two ball pin holes are offered, the centrage in No. two ball pin holes is coaxial with the centrage at No. two ends.

The grease nipple screwed hole communicated with plumbing arm rotary shaft hole, grease nipple are offered on the outer peripheral face of the plumbing arm round end Grease nipple is equipped with screwed hole.

The middle plumbing arm assembly also includes dust cover, bolt, and between the dust cover and No. two ends sealing gasket is provided with Piece, offers multiple bolts hole on No. two ends, the bolt passes match with bolt hole after dust cover, gasket seal successively Close.

Frustum is provided with the middle part of the rack body, the supporting shaft hole is opened in the middle part of frustum, the frustum One end is provided with stepped hole, and one end of stepped hole communicates with supporting shaft hole, and the other end of stepped hole extends to the end of rack body On face, the other end of the frustum is provided with stage portion, and multiple rack mounting apertures are provided with the rack body, and support is installed The rectangular surrounding for being arranged on frustum in hole.

Reinforcement is provided between the rack mounting apertures and frustum.

The rack body includes an installing plate being connected and No. two installing plates, and an installing plate is triangle Structure, installing plate includes that No. one is installed when installing with No. two, and No. two installing plates are rectangular configuration, No. two installing plates Including first install while, second install while, the 3rd install side, first install while one end with No. one installation while be connected, first Install while the other end with the 3rd install while one end it is vertical be connected, the 3rd install while the other end and second installation while one end Vertical connection, second install while the other end with No. two installations while be connected；

Frustum is provided with the middle part of a number installing plate, the supporting shaft hole is opened in the middle part of frustum, the frustum One end be provided with stepped hole, one end of stepped hole communicates with supporting shaft hole, and the other end of stepped hole extends to an installing plate End face on, the other end of the frustum is provided with stage portion, all offer on four angles of No. two installing plates support peace Dress hole.

Described No. one install while, No. two install while on be provided with a reinforcement, described first installs side, second installs No. two reinforcements are provided with side, No. three reinforcements are provided between the frustum and No. two installing plates.

The plumbing arm support shaft includes being sequentially connected positive stop end, interlude, the connection end for connecing, from spacing on the interlude Hold to connection end and be disposed with interference fit face, interference fits face, inner bearing anchor ring, non-processing face, outer bearing anchor ring, it is described Screw thread and cotter-pin hold are provided with the outer peripheral face of connection end；

The axle confined planes of the positive stop end contact with the axis hole confined planes of stepped hole, the interference fit face and support shaft Hole interference fit, the interference fits face and supporting shaft hole interference fits, on the inner bearing anchor ring inner bearing is arranged with, described Outer bearing is arranged with outer bearing anchor ring, the inner bearing anchor ring, the diameter of outer bearing anchor ring are all higher than the diameter in non-processing face, The anti-attrition catch is set on connection end, and anti-attrition catch contacts with the outer face of outer bearing, and the nut passes through screw thread It is connected with connection end, in the cotter-pin hold split pin is equipped with.

The middle plumbing arm assembly also includes plumbing arm oil seal assembly, and on an end seal mounting hole, oil sealing are offered Installing hole is communicated with inner bearing installing hole, and the diameter with diameter greater than inner bearing installing hole of seal mounting hole, the plumbing arm oil Envelope general assembly is in seal mounting hole, and plumbing arm oil seal assembly is set in stage portion.

Compared with prior art, the beneficial effects of the utility model are：

1st, because plumbing arm support shaft is adopted in plumbing arm assembly in the middle of a kind of bearing-type of duplex pull rod steering of this utility model With bearing arrangement, and bearing clearance is adjusted by anti-attrition catch so that plumbing arm support shaft rotate nimbly and freely, middle plumbing arm is difficult Abrasion looseness, so as to be prevented effectively from middle plumbing arm assembly life-time service after the looseness problem that causes because of abrasion, be easy to use and tie up Shield, long service life.Therefore, this utility model looseness not easy to wear, O＆M simplicity, long service life.

2nd, due to plumbing arm round end in plumbing arm assembly in the middle of a kind of bearing-type of duplex pull rod steering of this utility model Median plane is parallel to each other with the median plane at plumbing arm ball pin end, for middle plumbing arm rotary shaft hole then has two kinds of process and assemble modes, Middle plumbing arm can be made there are two kinds of distance values apart from vehicle frame, increased the versatility of middle plumbing arm blank, in addition, plumbing arm ball pin end is 7 font structures, the one end at plumbing arm ball pin end offers a ball pin hole, and the other end at plumbing arm ball pin end offers No. two ball pins Hole, a ball pin hole can change with No. two ball pin holes in the certain limit on plumbing arm ball pin end, i.e., middle plumbing arm length Scope is adjustable, and the scope of application is big, blank highly versatile.Therefore, this utility model is applied widely, highly versatile.

3rd, due to plumbing arm round end in plumbing arm assembly in the middle of a kind of bearing-type of duplex pull rod steering of this utility model The grease nipple screwed hole communicated with plumbing arm rotary shaft hole is offered on outer peripheral face, in grease nipple screwed hole grease nipple is equipped with, led to Cross and set up grease nipple bearing and plumbing arm support shaft are lubricated, with the looseness phenomenon for avoiding causing because of abrasion, improve reliability Performance, meanwhile, middle plumbing arm assembly also includes plumbing arm oil seal assembly and dust cover, and plumbing arm oil seal assembly is assemblied in seal mounting hole Interior, and plumbing arm oil seal assembly is set in stage portion, dust cover is arranged on plumbing arm round end, sets up plumbing arm oil seal assembly and anti- Dust hood, prevents oil seepage and prevents silt, dust, aqueous vapor etc. from invading in bearing, and then plumbing arm assembly in the middle of improving Unfailing performance.Therefore, this utility model reliability is high.

4th, because a kind of bearing-type centre plumbing arm assembly medium-height trestle installing hole of duplex pull rod steering of this utility model is in Rectangle is arranged on the surrounding of frustum, or the rectangular side for being arranged on frustum of rack mounting apertures, and such design causes to install When, can be adjusted according to the height of vehicle frame, i.e. supporting shaft hole can up and down adjust installation, applied widely, highly versatile, Meanwhile, reinforcement is provided with rack body, the strength and stiffness of mounting bracket can be effectively increased, fracture is prevented, safely may be used Lean on.Therefore, this utility model is applied widely, highly versatile, safety and reliability are high.

5th, due to plumbing arm support shaft bag in plumbing arm assembly in the middle of a kind of bearing-type of duplex pull rod steering of this utility model Include and be sequentially connected positive stop end, interlude, the connection end for connecing, interference fit is disposed with from positive stop end to connection end on interlude Face, interference fits face, inner bearing anchor ring, non-processing face, outer bearing anchor ring, are provided with screw thread and opening on the outer peripheral face of connection end Pin-and-hole, such design cause plumbing arm support shaft can not only precisely Matching installation support, bearing, middle plumbing arm, and can improve The installation effectiveness and unfailing performance of middle plumbing arm assembly.Therefore, this utility model is not only reasonable in design, and installation effectiveness height, Reliability is high.

Description of the drawings

Fig. 1 is the structural representation of the bearing-type centre plumbing arm assembly in embodiment of the present utility model 1.

Fig. 2 is the structural representation of inner bearing in Fig. 1, outer bearing.

Fig. 3 is the dimensional structure diagram of the bearing-type centre plumbing arm assembly in embodiment of the present utility model 5.

Fig. 4 is the structural representation of grease nipple in Fig. 3.

Fig. 5 is the structural representation of inner bearing in Fig. 3, outer bearing.

Fig. 6 is the structural representation of mounting bracket in Fig. 1.

Fig. 7 is the structural representation of frustum in Fig. 6.

Fig. 8 is the structural representation of mounting bracket in Fig. 3.

Fig. 9 is the structural representation of reinforcement in Fig. 8, No. two reinforcements, No. three reinforcements.

Figure 10 is the structural representation of plumbing arm support shaft in this utility model.

Figure 11 is the structural representation of middle plumbing arm in this utility model.

Figure 12 is the structural representation of plumbing arm round end in Figure 11.

In figure：Mounting bracket 1, the installing plate 111, two of a rack body 11, installing plate 112, install side 113, No. two are installed the 115, second installation 117, frustum 12, supporting shaft hole 121, platform when the 116, the 3rd installs when 114, first installs Rank hole 122, stage portion 123, axis hole confined planes 124, rack mounting apertures 13, the reinforcement of reinforcement 15, two of reinforcement 14, 16th, No. three reinforcements 17, plumbing arm support shaft 2, positive stop end 21, axle confined planes 211, interlude 22, interference fit faces 221, transition Mating surface 222, inner bearing anchor ring 223, non-processing face 224, outer bearing anchor ring 225, connection end 23, screw thread 231, cotter-pin hold 232nd, middle plumbing arm 3, plumbing arm body 31, the end 321, two of plumbing arm round end 32, an end 322, centrage 323, plumbing arm ball pin End 33, ball pin hole 331, two ball pin hole 332, bending part 333, grease nipple screwed hole 34, the rotation of grease nipple 341, plumbing arm Axis hole 35, inner bearing installing hole 36, outer bearing installing hole 37, the median plane 310 of median plane 39, two of seal mounting hole 38, Bolt hole 311, plumbing arm oil seal assembly 4, inner bearing 5, outer bearing 6, anti-attrition catch 7, nut 8, split pin 81, dust cover 9, sealing Pad 91, bolt 92.

Specific embodiment

This utility model is described in further detail below in conjunction with description of the drawings and specific embodiment.

Referring to Fig. 1 to Figure 12, plumbing arm assembly in the middle of a kind of bearing-type of duplex pull rod steering, including mounting bracket 1, hang down Arm support shaft 2, middle plumbing arm 3, the mounting bracket 1 includes rack body 11 and supporting shaft hole 121, and the middle plumbing arm 3 is wrapped Plumbing arm body 31 is included, one end of the plumbing arm body 31 is connected with plumbing arm round end 32, plumbing arm round end 32 and offers plumbing arm Rotary shaft hole 35, the other end of the plumbing arm body 31 is connected with plumbing arm ball pin end 33, and the plumbing arm support shaft 2 is passed successively props up Locked by nut 8 after support axis hole 121, plumbing arm rotary shaft hole 35；

The middle plumbing arm assembly also includes inner bearing 5, outer bearing 6, anti-attrition catch 7, the plumbing arm rotary shaft hole 35 One end offers the inner bearing installing hole 36 for communicating therewith, inner bearing installing hole 36 it is straight with diameter greater than plumbing arm rotary shaft hole 35 Footpath, inner bearing installing hole 36 contacts with the outer peripheral face of inner bearing 5, and the other end of the plumbing arm rotary shaft hole 35 is offered and it The outer bearing installing hole 37 for communicating, the diameter with diameter greater than plumbing arm rotary shaft hole 35 of outer bearing installing hole 37, outer bearing is installed Hole 37 contacts with the outer peripheral face of outer bearing 6, and the anti-attrition catch 7 is located between outer bearing 6 and nut 8, and the plumbing arm is supported Axle 2 is passed locked by nut 8 after supporting shaft hole 121, inner bearing 5, plumbing arm rotary shaft hole 35, outer bearing 6, anti-attrition catch 7 successively Tightly.

A number median plane 39 of the plumbing arm round end 32 is parallel to each other with No. two median planes 310 at plumbing arm ball pin end 33；

The plumbing arm round end 32 includes an end 321 and No. two ends 322, and the plumbing arm ball pin end 33 is 7 font structures, The bending part 333 at plumbing arm ball pin end 33 is connected with plumbing arm body 31, and the one end at plumbing arm ball pin end 33 offers a ball pin hole 331, the other end at plumbing arm ball pin end 33 offers No. two ball pin holes 332, the centrage in No. two ball pin holes 332 and No. two ends 322 Centrage 323 it is coaxial.

The grease nipple screwed hole 34 communicated with plumbing arm rotary shaft hole 35 is offered on the outer peripheral face of the plumbing arm round end 32, Grease nipple 341 is equipped with grease nipple screwed hole 34.

The middle plumbing arm assembly also includes dust cover 9, bolt 92, is provided between the dust cover 9 and No. two ends 322 Gasket seal 91, offers multiple bolts hole 311 on No. two ends 322, the bolt 92 passes successively dust cover 9, sealing It is engaged with bolt hole 311 after pad 91.

The middle part of the rack body 11 is provided with frustum 12, and the supporting shaft hole 121 is opened in the middle part of frustum 12, institute The one end for stating frustum 12 is provided with stepped hole 122, and one end of stepped hole 122 communicates with supporting shaft hole 121, stepped hole 122 it is another One end is extended on the end face of rack body 11, and the other end of the frustum 12 is provided with stage portion 123, the rack body 11 On be provided with multiple rack mounting apertures 13, the rectangular surrounding for being arranged on frustum 12 of rack mounting apertures 13.

Reinforcement 14 is provided between the rack mounting apertures 13 and frustum 12.

The rack body 11 includes an installing plate 111 being connected and No. two installing plates 112, an installing plate 111 is triangular structure, and an installing plate 111 includes that No. one is installed when 113 and No. two are installed 114, No. two installing plates 112 is rectangular configuration, and No. two installing plates 112 include that first installs when 115, second installs the 116, the 3rd and install side 117, first Install and 113 be connected when 115 one end is installed with No. one, first installs the one of in 115 other end and the 3rd installation 117 The vertical connection in end, the 3rd install when 117 other end is installed with second 116 one end it is vertical be connected, the second installation side 116 The other end is installed side 114 and is connected with No. two；

The middle part of a number installing plate 111 is provided with frustum 12, and the supporting shaft hole 121 is opened in frustum 12 Portion, one end of the frustum 12 is provided with stepped hole 122, and one end of stepped hole 122 communicates with supporting shaft hole 121, stepped hole 122 The other end extend on the end face of an installing plate 111, the other end of the frustum 12 is provided with stage portion 123, described two Rack mounting apertures 13 are all offered on four angles of number installing plate 112.

Install for described No. one and a reinforcement 15 is provided with when installing for 113, No. two 114, described first installs side 115th, No. two reinforcements 16 are provided with the second installation side 116, between the frustum 12 and No. two installing plates 112 three is provided with Number reinforcement 17.

The plumbing arm support shaft 2 includes being sequentially connected positive stop end 21, interlude 22, the connection end 23 for connecing, the interlude Be disposed with from positive stop end 21 to connection end 23 on 22 interference fit face 221, interference fits face 222, inner bearing anchor ring 223, Non-processing face 224, outer bearing anchor ring 225, are provided with screw thread 231 and cotter-pin hold 232 on the outer peripheral face of the connection end 23；

The axle confined planes 211 of the positive stop end 21 contact with the axis hole confined planes 124 of stepped hole 122, and the interference is matched somebody with somebody Conjunction face 221 and the interference fit of supporting shaft hole 121, the interference fits face 222 and the interference fits of supporting shaft hole 121, the interior axle Inner bearing 5 is arranged with carrier ring face 223, outer bearing 6 is arranged with the outer bearing anchor ring 225, the inner bearing anchor ring 223, The diameter of outer bearing anchor ring 225 is all higher than the diameter in non-processing face 224, and the anti-attrition catch 7 is set on connection end 23, and is subtracted Mill catch 7 contacts with the outer face of outer bearing 6, and the nut 8 is connected by screw thread 231 with connection end 23, the opening Split pin 81 is equipped with pin-and-hole 232.

The middle plumbing arm assembly also includes plumbing arm oil seal assembly 4, and on an end 321 seal mounting hole is offered 38, seal mounting hole 38 is communicated with inner bearing installing hole 36, and seal mounting hole 38 with diameter greater than inner bearing installing hole 36 Diameter, the plumbing arm oil seal assembly 4 is assemblied in seal mounting hole 38, and plumbing arm oil seal assembly 4 is set in stage portion 123.

Principle of the present utility model is described as follows：

The mounting bracket upper bracket installing hole can be with the rectangular surrounding for being distributed in supporting shaft hole, it is also possible to rectangular point , in the side of supporting shaft hole, when the purpose of so design is to install with vehicle frame, the installation that can effectively expand plumbing arm is high for cloth Degree scope, strengthens versatility, in certain practical application, it is also possible to adjust supporting shaft hole and rack mounting apertures according to real needs （Rectangular distribution）Relative position relation.

Interference fit face in the plumbing arm support shaft and the supporting shaft hole interference fit of mounting bracket, are prevented from plumbing arm Support shaft swings with the swing of middle plumbing arm；The inner bearing anchor ring, the diameter of outer bearing anchor ring are slightly larger than non-processing face Diameter, such design not only prevents well inner bearing and outer bearing from producing movement in the course of the work, and reduces Difficulty of processing and processing cost；The plumbing arm support shaft is assemblied in after the supporting shaft hole of mounting bracket, plumbing arm support shaft upper limit The axle confined planes at end contact with the axis hole confined planes of stepped hole, and now, positive stop end is located at the inside of stepped hole.

The median plane of the plumbing arm round end and the median plane at plumbing arm ball pin end not in same plane, then in the middle of plumbing arm can be with There are two kinds of assembling modes, i.e. car load plumbing arm round end median plane in the left side or right side of plumbing arm ball pin end median plane, so that The distance of plumbing arm ball pin hole relative frame is different；In addition, plumbing arm ball pin end be 7 font structures, the bending part at plumbing arm ball pin end with Plumbing arm body is connected, and a ball pin hole can change in the position between its place end and bending part, No. two ball pin holes Can up and down change along the centrage at No. two ends, and then increase the versatility of plumbing arm blank.

Embodiment 1：

Referring to Fig. 1 to Figure 12, plumbing arm assembly in the middle of a kind of bearing-type of duplex pull rod steering, including mounting bracket 1, hang down Arm support shaft 2, middle plumbing arm 3, inner bearing 5, outer bearing 6, anti-attrition catch 7, the mounting bracket 1 includes rack body 11 and props up Support axis hole 121, the middle plumbing arm 3 includes plumbing arm body 31, and one end of the plumbing arm body 31 is connected with plumbing arm round end 32, Plumbing arm rotary shaft hole 35 is offered in plumbing arm round end 32, the other end of the plumbing arm body 31 is connected with plumbing arm ball pin end 33, One end of the plumbing arm rotary shaft hole 35 offers the inner bearing installing hole 36 for communicating therewith, and the diameter of inner bearing installing hole 36 is big In the diameter of plumbing arm rotary shaft hole 35, inner bearing installing hole 36 contacts with the outer peripheral face of inner bearing 5, the plumbing arm rotary shaft hole 35 other end offers the outer bearing installing hole 37 for communicating therewith, outer bearing installing hole 37 with diameter greater than plumbing arm rotary shaft hole 35 diameter, outer bearing installing hole 37 contacts with the outer peripheral face of outer bearing 6, and the anti-attrition catch 7 is located at outer bearing 6 and nut Between 8, the plumbing arm support shaft 2 passes successively supporting shaft hole 121, inner bearing 5, plumbing arm rotary shaft hole 35, outer bearing 6, anti-attrition Locked by nut 8 after catch 7；The plumbing arm support shaft 2 includes being sequentially connected positive stop end 21, the interlude 22, connection end for connecing 23, interference fit face 221, interference fits face 222, interior is disposed with from positive stop end 21 to connection end 23 on the interlude 22 Bearing anchor ring 223, non-processing face 224, outer bearing anchor ring 225, are provided with screw thread 231 and open on the outer peripheral face of the connection end 23 Mouth pin-and-hole 232, the interference fit face 221 and the interference fit of supporting shaft hole 121, the interference fits face 222 and supporting shaft hole 121 interference fits, are arranged with inner bearing 5 on the inner bearing anchor ring 223, on the outer bearing anchor ring 225 outer bearing is arranged with 6, the inner bearing anchor ring 223, the diameter of outer bearing anchor ring 225 are all higher than the diameter in non-processing face 224, the anti-attrition catch 7 It is set on connection end 23, and anti-attrition catch 7 contacts with the outer face of outer bearing 6, the nut 8 is by screw thread 231 and even Connect end 23 to be connected, in the cotter-pin hold 232 split pin 81 is equipped with.

Embodiment 2：

Substance is with embodiment 1, difference：

Referring to Fig. 1 to Figure 12, a median plane 39 of the plumbing arm round end 32 and No. two centers at plumbing arm ball pin end 33 Face 310 is parallel to each other；The plumbing arm round end 32 includes an end 321 and No. two ends 322, and the plumbing arm ball pin end 33 is 7 words Type structure, the bending part 333 at plumbing arm ball pin end 33 is connected with plumbing arm body 31, and the one end at plumbing arm ball pin end 33 offers No. one Ball pin hole 331, the other end at plumbing arm ball pin end 33 offers No. two ball pin holes 332, the centrage in No. two ball pin holes 332 and No. two The centrage 323 at end 322 is coaxial；The middle plumbing arm assembly also includes dust cover 9, bolt 92, the dust cover 9 and No. two ends Gasket seal 91 is provided between 322, on No. two ends 322 multiple bolts hole 311 are offered, the bolt 92 is passed successively It is engaged with bolt hole 311 after dust cover 9, gasket seal 91.

Embodiment 3：

Substance is with embodiment 1, difference：

Referring to Fig. 1 to Figure 12, offer what is communicated with plumbing arm rotary shaft hole 35 on the outer peripheral face of the plumbing arm round end 32 Grease nipple 341 is equipped with grease nipple screwed hole 34, grease nipple screwed hole 34.

Embodiment 4：

Substance is with embodiment 1, difference：

Referring to Fig. 1 to Figure 12, the middle part of the rack body 11 is provided with frustum 12, and the supporting shaft hole 121 is opened in The middle part of frustum 12, one end of the frustum 12 is provided with stepped hole 122, one end and the phase of supporting shaft hole 121 of stepped hole 122 Logical, the other end of stepped hole 122 is extended on the end face of rack body 11, and the other end of the frustum 12 is provided with stage portion 123, multiple rack mounting apertures 13 are provided with the rack body 11, rack mounting apertures 13 are rectangular to be arranged on the four of frustum 12 In week, reinforcement 14, the axle confined planes 211 of the positive stop end 21 and step are provided between the rack mounting apertures 13 and frustum 12 The axis hole confined planes 124 in hole 122 contact；The middle plumbing arm assembly also includes plumbing arm oil seal assembly 4, the plumbing arm round end Seal mounting hole 38 is offered on 32, seal mounting hole 38 is communicated with inner bearing installing hole 36, and the diameter of seal mounting hole 38 More than the diameter of inner bearing installing hole 36, the plumbing arm oil seal assembly 4 is assemblied in seal mounting hole 38, and plumbing arm oil seal assembly 4 are set in stage portion 123.

Embodiment 5：

Substance is with embodiment 1, difference：

Referring to Fig. 1 to Figure 12, the rack body 11 includes an installing plate 111 being connected and No. two installing plates 112, A number installing plate 111 is triangular structure, and an installing plate 111 includes that No. one is installed when 113 and No. two are installed 114, No. two installing plates 112 are rectangular configuration, and No. two installing plates 112 include that first installs when 115, second installs the 116, the 3rd Side 117 is installed, first installs and 113 be connected when 115 one end is installed with No. one, the other end on the first installation side 115 and the Three installation sides 117 one end vertically connect, the 3rd install while 117 the other end with second installation while 116 one end it is vertical be connected, Second installs and 114 is connected when 116 other end is with No. two installations；The middle part of a number installing plate 111 is provided with frustum 12, the supporting shaft hole 121 is opened in the middle part of frustum 12, and one end of the frustum 12 is provided with stepped hole 122, stepped hole 122 one end communicates with supporting shaft hole 121, and the other end of stepped hole 122 is extended on the end face of an installing plate 111, described The other end of frustum 12 is provided with stage portion 123, and on four angles of No. two installing plates 112 rack mounting apertures are all offered 13；Install on when installing for 113, No. two 114 for described No. one and be provided with a reinforcement 15, described first install side 115, the No. two reinforcements 16 are provided with two installation sides 116, No. three reinforcements are provided between the frustum 12 and No. two installing plates 112 Muscle 17, the axle confined planes 211 of the positive stop end 21 contact with the axis hole confined planes 124 of stepped hole 122；The middle plumbing arm is total Into plumbing arm oil seal assembly 4 is also included, seal mounting hole 38, seal mounting hole 38 and interior axle are offered on the plumbing arm round end 32 Hold installing hole 36 to communicate, and the diameter with diameter greater than inner bearing installing hole 36 of seal mounting hole 38, the plumbing arm oil seal assembly 4 It is assemblied in seal mounting hole 38, and plumbing arm oil seal assembly 4 is set in stage portion 123.

Claims (10)

1. plumbing arm assembly in the middle of a kind of bearing-type of duplex pull rod steering, including mounting bracket（1）, plumbing arm support shaft（2）, in Between plumbing arm（3）, the mounting bracket（1）Including rack body（11）With supporting shaft hole（121）, the middle plumbing arm（3）Including Plumbing arm body（31）, the plumbing arm body（31）One end be connected with plumbing arm round end（32）, plumbing arm round end（32）Inside open up There is plumbing arm rotary shaft hole（35）, the plumbing arm body（31）The other end be connected with plumbing arm ball pin end（33）, the plumbing arm support Axle（2）Supporting shaft hole is passed successively（121）, plumbing arm rotary shaft hole（35）Pass through nut afterwards（8）Locking, it is characterised in that：

The middle plumbing arm assembly also includes inner bearing（5）, outer bearing（6）, anti-attrition catch（7）, the plumbing arm rotary shaft hole （35）One end offer the inner bearing installing hole for communicating therewith（36）, inner bearing installing hole（36）With diameter greater than plumbing arm rotation Axis hole（35）Diameter, inner bearing installing hole（36）With inner bearing（5）Outer peripheral face contact, the plumbing arm rotary shaft hole（35） The other end offer the outer bearing installing hole for communicating therewith（37）, outer bearing installing hole（37）With diameter greater than plumbing arm rotary shaft Hole（35）Diameter, outer bearing installing hole（37）With outer bearing（6）Outer peripheral face contact, the anti-attrition catch（7）Positioned at outer Bearing（6）With nut（8）Between, the plumbing arm support shaft（2）Supporting shaft hole is passed successively（121）, inner bearing（5）, plumbing arm rotation Shaft hole（35）, outer bearing（6）, anti-attrition catch（7）Pass through nut afterwards（8）Locking.

2. plumbing arm assembly in the middle of a kind of bearing-type of duplex pull rod steering according to claim 1, it is characterised in that：

The plumbing arm round end（32）A median plane（39）With plumbing arm ball pin end（33）No. two median planes（310）It is mutually flat OK；

The plumbing arm round end（32）Including an end（321）With No. two ends（322）, the plumbing arm ball pin end（33）For 7 fonts Structure, plumbing arm ball pin end（33）Bending part（333）With plumbing arm body（31）It is connected, plumbing arm ball pin end（33）One end open up There is a ball pin hole（331）, plumbing arm ball pin end（33）The other end offer No. two ball pin holes（332）, No. two ball pin holes（332） Centrage and No. two end（322）Centrage（323）Coaxially.

3. plumbing arm assembly in the middle of a kind of bearing-type of duplex pull rod steering according to claim 1 and 2, its feature exists In：The plumbing arm round end（32）Outer peripheral face on offer and plumbing arm rotary shaft hole（35）The grease nipple screwed hole for communicating （34）, grease nipple screwed hole（34）Inside it is equipped with grease nipple（341）.

4. plumbing arm assembly in the middle of a kind of bearing-type of duplex pull rod steering according to claim 2, it is characterised in that：Institute Stating middle plumbing arm assembly also includes dust cover（9）, bolt（92）, the dust cover（9）With No. two ends（322）Between be provided with it is close Gasket（91）, No. two ends（322）On offer multiple bolts hole（311）, the bolt（92）Dust cover is passed successively （9）, gasket seal（91）Afterwards with bolt hole（311）It is engaged.

5. plumbing arm assembly in the middle of a kind of bearing-type of duplex pull rod steering according to claim 2, it is characterised in that：Institute State rack body（11）Middle part be provided with frustum（12）, the supporting shaft hole（121）It is opened in frustum（12）Middle part, it is described Frustum（12）One end be provided with stepped hole（122）, stepped hole（122）One end and supporting shaft hole（121）Communicate, stepped hole （122）The other end extend to rack body（11）End face on, the frustum（12）The other end be provided with stage portion （123）, the rack body（11）On be provided with multiple rack mounting apertures（13）, rack mounting apertures（13）It is rectangular to be arranged on cone Platform（12）Surrounding.

6. plumbing arm assembly in the middle of a kind of bearing-type of duplex pull rod steering according to claim 5, it is characterised in that：Institute State rack mounting apertures（13）With frustum（12）Between be provided with reinforcement（14）.

7. plumbing arm assembly in the middle of a kind of bearing-type of duplex pull rod steering according to claim 2, it is characterised in that：

The rack body（11）Including an installing plate being connected（111）With No. two installing plates（112）, an installation Plate（111）For triangular structure, an installing plate（111）Including an installation side（113）With No. two installation sides（114）, it is described No. two installing plates（112）For rectangular configuration, No. two installing plates（112）Side is installed including first（115）, second install side（116）、 3rd installs side（117）, first installs side（115）One end with No. one installation side（113）It is connected, first installs side（115） The other end and the 3rd install side（117）One end vertically connect, the 3rd install side（117）The other end and second install side （116）One end vertically connect, second install side（116）The other end and No. two installation sides（114）It is connected；

A number installing plate（111）Middle part be provided with frustum（12）, the supporting shaft hole（121）It is opened in frustum（12）'s Middle part, the frustum（12）One end be provided with stepped hole（122）, stepped hole（122）One end and supporting shaft hole（121）Phase It is logical, stepped hole（122）The other end extend to an installing plate（111）End face on, the frustum（12）The other end arrange There is stage portion（123）, No. two installing plates（112）Four angles on all offer rack mounting apertures（13）.

8. plumbing arm assembly in the middle of a kind of bearing-type of duplex pull rod steering according to claim 7, it is characterised in that：Institute State an installation side（113）, No. two side is installed（114）On be provided with a reinforcement（15）, described first installs side （115）, second install side（116）On be provided with No. two reinforcements（16）, the frustum（12）With No. two installing plates（112）It Between be provided with No. three reinforcements（17）.

9. plumbing arm assembly in the middle of a kind of bearing-type of the duplex pull rod steering according to any one in claim 5-8, It is characterized in that：

The plumbing arm support shaft（2）Including being sequentially connected the positive stop end that connects（21）, interlude（22）, connection end（23）, it is described in Between section（22）On from positive stop end（21）To connection end（23）It is disposed with interference fit face（221）, interference fits face（222）、 Inner bearing anchor ring（223）, non-processing face（224）, outer bearing anchor ring（225）, the connection end（23）Outer peripheral face on be provided with Screw thread（231）With cotter-pin hold（232）；

The positive stop end（21）Axle confined planes（211）With stepped hole（122）Axis hole confined planes（124）Contact, the mistake It is full of mating surface（221）With supporting shaft hole（121）Interference fit, the interference fits face（222）With supporting shaft hole（121）Transition is matched somebody with somebody Close, the inner bearing anchor ring（223）On be arranged with inner bearing（5）, the outer bearing anchor ring（225）On be arranged with outer bearing（6）, The inner bearing anchor ring（223）, outer bearing anchor ring（225）Diameter be all higher than non-processing face（224）Diameter, anti-attrition gear Piece（7）It is set in connection end（23）On, and anti-attrition catch（7）With outer bearing（6）Outer face contact, the nut（8）It is logical Cross screw thread（231）With connection end（23）It is connected, the cotter-pin hold（232）Inside it is equipped with split pin（81）.

10. plumbing arm assembly in the middle of a kind of bearing-type of the duplex pull rod steering according to any one in claim 5-8, It is characterized in that：The middle plumbing arm assembly also includes plumbing arm oil seal assembly（4）, an end（321）On offer oil sealing Installing hole（38）, seal mounting hole（38）With inner bearing installing hole（36）Communicate, and seal mounting hole（38）With diameter greater than interior Bearing mounting hole（36）Diameter, the plumbing arm oil seal assembly（4）It is assemblied in seal mounting hole（38）It is interior, and plumbing arm oil seal assembly （4）It is set in stage portion（123）On.