CN205254442U - Two cylinder pneumatic type bushing pipe positioning mechanism of rear axle assembly - Google Patents

Abstract

The utility model discloses a two cylinder pneumatic type bushing pipe positioning mechanism of rear axle assembly, fixed guide cylinder on the cylinder body of first cylinder, the piston rod of first cylinder is vertical upwards to be stretched into in the guide cylinder to be connected with the lower extreme of guide pillar, at the top of guide pillar installation locating pin, the periphery of locating pin is equipped with the holding ring, and this holding ring is installed on the top surface of guide cylinder, be equipped with the second cylinder on the guide cylinder, the axial lead of second cylinder parallels with the axial lead of first cylinder, the piston rod of second cylinder is vertical upwards to be stretched out to be connected with the one end of pressure arm, at the fixed pressure head in the bottom surface of the pressure arm other end, this pressure head is located the locating pin directly over. The utility model relates to a rationally, simple structure, compactness, easily assembly, small in size, occupation space is little, and is with low costs, not only controls the convenience, and the operation is nimble, reliable, can realize the accuracy and the steadiness of bushing pipe location moreover, is favorable to bushing pipe welding installation, and welding quality is secure.

Description

The two cylinder pneumatic type bushing pipe detent mechanisms of hind axle assembly

Technical field

The utility model belongs to technical field of tooling clamps, and specifically, particularly a kind of hind axle assembly is twoCylinder pneumatic type bushing pipe detent mechanism.

Background technology

Automobile hind axle assembly is propped up by crossbeam, trailing arm, spring base, bushing pipe, parking brake cable support, oil pipeThe formations such as frame and damper mount pad, are symmetrically welded trailing arm at the two ends of crossbeam, on each trailing arm, welding serves as a contrast successivelyPipe, parking brake cable support, damper mount pad and oil tube bracket. In welding, need the division of laborOrder positions crossbeam, trailing arm, spring base, bushing pipe etc. respectively by multiple frocks. Existing bushing pipe is fixedPosition tool structure complexity, takes up room large, and cost is high, contraposition difficulty, and the steadiness of location is poor,Make welding quality be difficult to ensure, the requirement that does not reach uniform production.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of simple in structure, reliable hind axle assemblyTwo cylinder pneumatic type bushing pipe detent mechanisms.

The technical solution of the utility model is as follows: the two cylinder pneumatic type bushing pipe detent mechanisms of a kind of hind axle assembly,It is characterized in that: fixed guide cylinder on the cylinder body of the first cylinder, the piston rod of the first cylinder is stretched straight upEnter in guide cylinder, and be connected with the lower end of guide pillar, on the top of described guide pillar, alignment pin, alignment pin energy are installedEnough stretch out outside guide cylinder, at the outer locating ring that is arranged with of described alignment pin, this locating ring is installed on guide cylinderOn end face; The second cylinder is housed on described guide cylinder, the axle center of the axial line of the second cylinder and the first cylinderLine parallels, and the piston rod of described the second cylinder stretches out straight up, and is connected with one end of pressure arm, is pressingThe fixing pressure head in the bottom surface of the arm other end, this pressure head be positioned at alignment pin directly over.

Adopt above technical scheme, when the automobile hind axle assembly bushing pipe of location, first bushing pipe is placed on to locationOn ring, then drive the piston rod of the first cylinder to protrude upward, guide pillar is moved upward together with alignment pin, fixedPosition pin stretches in bushing pipe locates, and makes bushing pipe planar can not produce and rock, and then drives the work of the second cylinderStopper rod action, makes the piston rod of the second cylinder drive pressure arm to move downward, until pressure head compressing is on the top of bushing pipeFace, pressure head and locating ring match, and can realize the clamping of bushing pipe is compressed, then in conjunction with the location in bushing pipePin, can guarantee the steadiness of bushing pipe location, and the welding quality between bushing pipe and trailing arm is secure like this, energyMeet the requirement of uniform production. The utility model adopts two cylinders that power is provided, and parts are few, entirety knotStructure is simple, compact, is easy to assembling, and volume is small and exquisite, takes up room little, and cost is low, and manipulation is convenient.

In order to reduce as much as possible wearing and tearing, increase the service life, be embedded with wear-resisting in the inside of described guide cylinderBushing pipe, described wear-resisting bushing pipe and guide pillar are slidably matched.

For simplified structure, be convenient to processing and fabricating and assembling, described pressure head is pane structure, this pressure head is logicalCrossing row's bolt is connected with pressure arm.

Beneficial effect: the utility model is reasonable in design, simple in structure, compact, be easy to assembling, volume is small and exquisite,Take up room little, cost is low, and not only manipulation is convenient, go slick, reliably, and it is fixed to realize bushing pipeAccuracy and the steadiness of position, be conducive to bushing pipe welded and installed, and welding quality is secure.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

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

Fig. 3 is the structural representation of guide pillar.

Fig. 4 is the structural representation of locating ring.

Detailed description of the invention

Below in conjunction with drawings and Examples, the utility model is described in further detail:

As shown in Figure 1 and Figure 2, guide cylinder 2 is set on the cylinder body of the first cylinder 1, guide cylinder 2 is positioned atThe top of one cylinder 1 cylinder body, and the cylinder body of guide cylinder 2 and the first cylinder 1 is fixed together. GuidingCylinder 2 is steel structure, and the profile of this guide cylinder 2 is square, i.e. the outline side of being of guide cylinder 2 cross sectionsShape. The piston rod of the first cylinder 1 stretches in guide cylinder 2 straight up, upper at the first cylinder 1 piston rodSide arranges guide pillar 3, and guide pillar 3 is positioned at guide cylinder 2, the wear-resisting bushing pipe of guide pillar 3 and guide cylinder 2 inner setting-ins12 are slidably matched.

As shown in Figure 2 and Figure 3, offer "T"-shaped groove 3a in the lower end of guide pillar 3, and guide pillar 3 withBetween the piston rod of the first cylinder 1, be provided with joint 9. Joint 9 is bolt arrangement, the head boss of this joint 9Snap in the "T"-shaped groove 3a of guide pillar 3 lower ends, both clampings coordinate. The lower end of joint 9 stretches into firstIn the piston rod of cylinder 1, joint 9 is connected with the piston rod thread of the first cylinder 1, locked by nut 10,Nut 10 is set on joint 9, and nut 10 is close to the end face of the first cylinder 1 piston rod.

As shown in Figure 1 and Figure 2, on the top of guide pillar 3, alignment pin 4, the end face of alignment pin 4 and all sides are installedBetween face, by conical surface transition, the bottom of this alignment pin 4 is formed with short column 4a, and short column 4a embeds guide pillarIn the adaptive groove that 3 upper ends are offered. Offer up big and down small two-part stepped hole at the center of alignment pin 4, shouldIn stepped hole, wear countersunk head stay bolt, the lower end of countersunk head stay bolt is stretched in guide pillar 3, by alignment pin 4 with leadPost 3 is fixed together, and alignment pin 4 can protrude upward outside guide cylinder 2 under the drive of guide pillar 3.

As shown in Figure 1, Figure 2, Figure 4 shows, at the outer locating ring 5 that is arranged with of alignment pin 4, this locating ring 5Interior edge is circular, the outline of locating ring 5 be four angles be rounded down square. At four of locating ring 5Angle place offers installing hole 5a, and this installing hole 5a is up big and down small two-part stepped hole, in each installing hole 5aWear sunk screw, locating ring 5 is fixed together by four sunk screws and guide cylinder 2. Circumferential twoBetween adjacent installing hole 5a, be provided with projection 5b, projection 5b press even circumferential distribute, and the bottom of projection 5b withThe end face of locating ring 5 is connected as a single entity.

The axial line and of the second cylinder 6, the second cylinders 6 is set on the side of guide cylinder 2 as shown in Figure 1,The axial line of one cylinder 1 parallels. Between guide cylinder 2 and the second cylinder 6, be provided with connecting plate 11, connectPlate 11, by steel plate punched moulding, has the first plate body and second plate body at obtuse angle each other. Of connecting plate 11A side laminating of one plate body and guide cylinder 2, is bolted between the first plate body and guide cylinder 2.The plane of orientation laminating arranging on the second plate body of connecting plate 11 and the second cylinder 6 cylinder bodies, the second plate body and theBetween two cylinders 6, be also bolted. The piston rod of the second cylinder 6 stretches out straight up, and with pressure arm 7One end connect, the fixing pressure head 8 in the bottom surface of pressure arm 7 other ends, this pressure head 8 is positioned at just going up of alignment pin 4Side. Pressure head 8 is preferably pane structure, and this pressure head 8 is connected with pressure arm 7 by row's bolt.

Operation principle of the present utility model is as follows:

When locating automobile hind axle assembly bushing pipe, first bushing pipe is placed on locating ring 5, makes bushing pipe by fixedFour projection 5b on position ring 5 support, and then drive the piston rod of the first cylinder 1 to protrude upward, and make guide pillar3 move upward together with alignment pin 4, and alignment pin 4 stretches in bushing pipe locates, and bushing pipe planar can not be producedRock, then drive the piston rod action of the second cylinder 6, make the piston rod of the second cylinder 6 drive pressure arm 7Move downward, until pressure head 8 is oppressed the end face at bushing pipe, pressure head 8 and locating ring 5 match, Ji KeshiNow the clamping of bushing pipe is compressed, then in conjunction with the alignment pin 4 in bushing pipe, can guarantee bushing pipe location accuracy andSteadiness.

Claims (3)

1. the two cylinder pneumatic type bushing pipe detent mechanisms of hind axle assembly, is characterized in that: in the first cylinder (1)Cylinder body on fixed guide cylinder (2), the piston rod of the first cylinder (1) stretches into guide cylinder (2) straight upIn, and be connected with the lower end of guide pillar (3), on the top of described guide pillar (3), alignment pin (4) is installed, fixedPosition pin (4) can stretch out outside guide cylinder (2), at the outer locating ring (5) that is arranged with of described alignment pin (4),This locating ring (5) is installed on the end face of guide cylinder (2); On described guide cylinder (2), the second gas is housedCylinder (6), the axial line of the second cylinder (6) parallels with the axial line of the first cylinder (1), and described secondThe piston rod of cylinder (6) stretches out straight up, and is connected with one end of pressure arm (7), another at pressure arm (7)The fixing pressure head (8) in the bottom surface of one end, this pressure head (8) be positioned at alignment pin (4) directly over.

2. the two cylinder pneumatic type bushing pipe detent mechanisms of hind axle assembly according to claim 1, its feature existsIn: be embedded with wear-resisting bushing pipe (12) in the inside of described guide cylinder (2), described wear-resisting bushing pipe (12) withGuide pillar (3) is slidably matched.

3. the two cylinder pneumatic type bushing pipe detent mechanisms of hind axle assembly according to claim 1, its feature existsIn: described pressure head (8) is pane structure, and this pressure head (8) is connected with pressure arm (7) by row's bolt.