JPH11245126A - Apparatus for assembling rear suspension on vehicle body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a vehicle body from floating up with a simple structure, and to easily assemble right and left rear suspensions on a vehicle body. SOLUTION: An elevating base 24 capable of placing a pair of right and left rear suspensions S is elevatably supported respectively at a supporting base 23 positioned and fixed at the lower part of a vehicle B. A chain drive means staitionaly disposed at the supporting base 23 is connected with chains 28 so as to pull the chains 28 equipped at one end with a hook 27 capable of engaging with an engaging hole 26 formed at the rear end of the vehicle body B. The movement of the chain 28 is thus prevented by a locking means 30 with the chain 28 pulled by a prescribed length with the chain drive means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arm having a base end swingably connected to a rear portion of a vehicle body, a knuckle connected to a tip end of the arm, and a spring force for pushing the knuckle downward. The present invention relates to a rear suspension assembling apparatus for assembling a pair of left and right rear suspensions having a coil spring acting on an intermediate portion of the arm on the left and right sides of a rear portion of the vehicle body.

[0002]

2. Description of the Related Art Conventionally, a device for assembling a pair of left and right rear suspensions at the rear portion of a vehicle body is disclosed, for example, in Japanese Unexamined Patent Publication No. 3-23.
It is already known in 9686 and the like.

[0003]

When assembling the rear suspension to the rear part of the vehicle body, the rear suspension is placed on an elevator mounted below the vehicle body mounted on a hanger, and the elevator is mounted on the elevator. The rear suspension is assembled to the rear of the vehicle body in a raised state, but the coil spring of the rear suspension exerts a spring force that pushes the knuckle downward, so simply raise the elevator with the rear suspension fixedly supported Just letting the car float from the hanger.

In Japanese Patent Application Laid-Open No. 3-239686, rear suspensions are respectively mounted on both ends of a cross beam attached to the rear of a vehicle body so as to be swingable, and the cross beam and both rear suspensions are fixed. To allow both rear suspensions to swing downward and to be supported on an elevator, allowing both rear suspensions to be pushed down by the spring force exerted by the coil spring when the elevator is raised. The configuration is as follows.

However, since both rear suspensions are connected to the cross beam via the bush, the fastening of the bush must be loosened before assembly to the vehicle body so that the rear suspension can be easily pushed down. Therefore, re-tightening of the bush is required after assembly. For this reason, the work of loosening and retightening the bush is required, which not only complicates the assembling work but also may cause damage to the bush.

[0006] The present invention has been made in view of the above circumstances, and while preventing the vehicle body from lifting with a simple configuration,
It is an object of the present invention to provide a rear suspension assembling device for a vehicle body in which left and right rear suspensions can be easily assembled to the vehicle body.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, there is provided an arm having a base end pivotally connected to a rear portion of a vehicle body, and an arm connected to a distal end of the arm. And a pair of left and right rear suspensions having a knuckle and a coil spring for applying a spring force in a direction of pushing the knuckle downward to the intermediate portion of the arm. A rear suspension assembling device, comprising a support base which can be positioned and fixed below the vehicle body at a predetermined position along a transport direction of a vehicle body transport conveyor having a hanger for mounting the vehicle body, and a pair of the left and right rear suspensions can be mounted thereon. Lifting platform supported by the support platform so as to be able to move up and down, lifting drive means provided between the support platform and the lifting platform, and engagement provided at a rear portion of the vehicle body A chain fixed to one end of the chain, a chain driving means fixedly provided on the support base so as to be capable of pulling the chain, and a chain having a predetermined length by the chain driving means. And a lock means disposed on the support so as to prevent the movement of each chain while being pulled only.

According to such a configuration, if the movement of the chain is prevented by the locking means in a state where the hook at one end of the chain is engaged with the engaging hole of the vehicle body, the distance between the vehicle body and the support on the hanger is a predetermined distance. Even if the coil spring with its upper end abutting on the vehicle body with the rise of the lift platform exerts a spring force, the lift platform and the vehicle body can be maintained while preventing the vehicle body from floating from the hanger. The two rear suspensions can be mounted on the vehicle body with the coil spring compressed. At this time, when the hook is engaged with the engagement hole, it is sufficient that the chain drive means does not apply a pulling force to the chain, that is, the chain is loosened, and the hook at one end of the chain is attached to the vehicle body. It is possible to easily engage with the engagement hole.

The invention according to claim 2 is the same as the above-described claim 1.
In addition to the configuration of the invention described in the above, a pair of engagement holes are provided at positions spaced from the center in the width direction of the rear part of the vehicle body on both left and right sides, and hooks that can be respectively engaged with the engagement holes are provided. A chain driving means is connected to a pair of chains provided at one end.

[0010] According to the structure of the second aspect of the present invention, the pair of chains are engaged at positions spaced apart from the center in the width direction of the rear part of the vehicle body on both the left and right sides. Even if one of the suspensions is first assembled to the vehicle body, the coil spring of one of the rear suspensions will not cause the vehicle body to rotate left or right, and the left and right rear suspensions will be mounted to the rear of the vehicle body with good workability Can be.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

FIGS. 1 to 7 show an embodiment of the present invention. FIG. 1 is a perspective view showing a state in which a rear suspension is mounted on a vehicle body, and FIG. 2 is a state before an elevator and a positioning rod are raised. FIG. 3 is an enlarged view of a main part of FIG. 2, and FIG. 4 is a view 4-4 of FIG.
5, FIG. 5 is a sectional view taken along the line 5-5 in FIG. 4, FIG. 6 is a sectional view corresponding to FIG. 4 in a state where the hook is in a standby position, and FIG. FIG. 5 is a cross-sectional view corresponding to FIG.

First, in FIG. 1, the vehicle body B before the rear suspensions S are assembled on the vehicle assembly line is placed on the hangers 12, 12 of the vehicle body transport conveyor 11 and transported in the transport direction 13. At a predetermined position on the way along the transport direction 13, an assembling position MP below the vehicle body B on the hangers 12, 12 and a standby position WP beside the assembling position MP are set. The pair of right and left rear suspensions S... To be mounted on the rear part of the vehicle body B is provided with the standby position WP and the mounting position MP.
It can move back and forth between them.

2 and 3, a cross beam 15 extending in the width direction of the vehicle body B is provided at a rear portion of the vehicle body B, and a pair of left and right rear suspensions S.
Are the left and right ends of the cross beam 15 and the body B
Are mounted on both sides of the cross beam 15 in the longitudinal direction.

The rear suspension S is a cross beam 1
The first lower arm 16 whose base end is swingably connected to 5
A knuckle 17 in which the distal end of the first lower arm 16 is connected to an intermediate portion in the vertical direction; and a second lower arm in which the proximal end is swingably connected to the cross beam 15 and the distal end is connected to a lower portion of the knuckle 17. 18 and cross beam 1
5, an upper arm 19 having a base end swingably connected and a tip connected to an upper portion of the knuckle 17, a longitudinal end of the cross beam 15, and a first lower arm 1.
6, a coil spring 20 provided at an intermediate portion in the longitudinal direction, and an upper end connected to the vehicle body B outside the longitudinal end of the cross beam 15 and the first lower arm 16
And a damper unit 21 having a lower end connected between the knuckle 17 and a portion for receiving the lower end of the coil spring 20.

The assembling device 14 includes a carriage 22 that can reciprocate between the standby position WP and the assembling position MP and that can be positioned and fixed at the assembling position MP.
2 and a lifting platform 24 on which the two rear suspensions S can be placed and supported by the supporting platform 23 so as to be able to move up and down, and between the support platform 23 and the lifting platform 24. The first as a lifting drive means to be
A pneumatic cylinder 25 and hooks capable of engaging with a pair of engaging holes 26, 26 provided at positions spaced apart on both left and right sides from the longitudinal center portion (widthwise center portion of the vehicle body B) of the cross beam 15. A pair of chains 28, 28 each having one end fixed to one end thereof, and a pair of chain drive means fixedly disposed on the support base 23 so as to be able to pull the chains 28, 28 respectively The second pneumatic cylinders 29, 29 and the chains 28, 28
In a state where each of the chains 28, 28 is pulled by a predetermined length.
The third air cylinder 3 as a pair of locking means provided on the support base 23 so as to prevent movement of
0, 30.

The carriage 22 is provided with rails 32 laid on the floor 31 between the standby position WP and the assembly position MP.
In this embodiment, a handle 34 is provided on the carriage 22 for the operator to move the carriage 22 between the standby position WP and the assembly position MP. Further, at the assembling position MP, a positioning rod 36 for fitting the positioning hole 35 provided on the floor surface to position the carriage 22 is provided on the carriage 22 so as to be able to move up and down.

The support base 23 has a plurality of columns 23a standing upright on the carriage 22 and a ceiling plate 23b supported horizontally at the upper ends of the columns 23a. By being positioned and fixed at the assembly position MP, the support base 23 is also positioned and fixed below the vehicle body B at a predetermined position along the transport direction 13 of the vehicle body transport conveyor 11.

On the ceiling plate 23b of the support base 23, a plurality of guide cylinders 37, whose upper ends are opened, are provided extending vertically, and are mounted on the lift table 24 which is horizontally arranged above the ceiling plate 23b. Are provided with a plurality of guide rods 38 slidably fitted to the guide cylinders 37. Therefore, the lift 24 can be moved up and down by being guided by the support 23.

An upper end of a first pneumatic cylinder 25 extending vertically is fixed to the lower surface of the central portion of the ceiling plate 23b, and a piston rod 25a of the first pneumatic cylinder 25 penetrates the ceiling plate 23b to move the lift 24 Is connected to the lower surface. Therefore, the lift 24 moves up and down in accordance with the expansion and contraction operation of the first pneumatic cylinder 25.

The support frame 39 fixed on the carriage 22 is disposed at a position corresponding to the center of the cross beam 15 in the width direction when the carriage 22 is positioned below the vehicle body B. , A fourth pneumatic cylinder 40 extending therefrom is fixed. In the fourth pneumatic cylinder 40, a lower end of a positioning rod 43 extending vertically while slidably penetrating a guide cylinder 41 provided on the support base 23 and a guide cylinder 42 provided on the lift base 24 is coaxial. The upper end of the positioning rod 43 is fitted into a positioning hole 56 provided in the cross beam 15 at the center in the width direction of the cross beam 15, that is, at the center between the engagement holes 26, 26. It is possible.

On both left and right sides of the lift 24, first mounting portions 44, 44 for mounting the base end side of the first lower arm 16 of the two rear suspensions S, and an intermediate portion of the first lower arm 16 are mounted. There are provided second mounting portions 45, 45 on which the first lower arm 16 is mounted on the left and right sides of the elevating table 24, respectively.
To each rear suspension S ...
It is possible to support

Referring to FIGS. 4 and 5, on both sides of the positioning rod 43 on the support 23, two pairs each extending along the transport direction 13 of the vehicle body transport conveyor 11 are provided.
A pair of rails 46, 46... Are provided, and lower portions on both sides of a pair of moving frames 47, 47 form a pair of rails 46, 46.
And the support 23 are slidably fitted. That is, the moving frames 47 are arranged on the support 23 so as to be able to move along the longitudinal direction of the rails 46, 46. A pair of second pneumatic cylinders 29, 29 each having an axis along the longitudinal direction of each rail 46, 46 are fixedly disposed on the support base 23, and the two moving frames 47, 47
The pneumatic cylinders 29 are connected to each other.

Two pairs of upper and lower pairs engage with intermediate portions of a pair of chains 28, 28 provided at one end with hooks 27, 27 respectively engageable with a pair of engaging holes 26, 26 provided in the cross beam 15. Sprockets 48…, 49
Are rotatably supported by brackets 50, 50 provided on the support base 23 at portions corresponding to positions below the engagement holes 26, 26, respectively.
The other ends of the chains 28, 28 extending horizontally from 8,..., 49 to the second pneumatic cylinders 29, 29, respectively, are fixedly connected to the moving frames 47, 47, respectively. Therefore, by the expansion and contraction operation of the second pneumatic cylinders 29, 29, a pulling force is applied to each chain 28 in a state where the hooks 27, 27 are engaged with the respective engagement holes 26, 26, or each of the chains 28, 28 Can be loosened. In addition, when the chains 28, 28 are loosened without engaging the hooks 27, 27 with the engaging holes 26, 26, as shown in FIG. The hook engaging portions 51, 51 are provided on the lift 24.

Incidentally, a pair of third pneumatic cylinders 3
Numerals 0 and 30 are fixed on the support base 23 so as to be disposed on the side of the moving frames 47 and 47 at positions near the second pneumatic cylinders 29 and 29, respectively. The support bases 23 have a horizontal axis orthogonal to the moving direction of each of the moving frames 47.
Placed on top. The side frames 47a on the third pneumatic cylinder 30, 30 side of each of the moving frames 47, 47 are provided with fitting holes 54 for fitting the piston rods 30a of the third pneumatic cylinders 30, 30, respectively. . Further, the side frames 47a are integrally provided with detection projection frames 47b projecting toward the second pneumatic cylinder 29.

On the other hand, the moving frames 47,
47 are opposed to the end of the second pneumatic cylinder 29, 29 on the side of the second pneumatic cylinder 29, 29.
Each is fixed so that it is located on the side of
Each of the support plates 52 has a detection protruding frame 47 of the movable frame 47, 47.
The detection switches 53, which change the switching mode by contacting the switches b, are mounted.

When the switches 53 detect that the moving frames 47 have moved to the moving ends toward the second pneumatic cylinders 29, the third pneumatic cylinders 30, 30 are moved. By the extension operation, each piston rod 30a is fitted into each fitting hole 54, and each moving frame 47, 47, that is, each chain 28, 28
Will be blocked.

Next, the operation of this embodiment will be described. The left and right rear suspensions S to be assembled at the rear of the vehicle body B are mounted on the elevator 24 when the carriage 22 is at the standby position WP. B is transported to the assembly position by the carriage 22 and the carriage 22 is moved to the assembly position MP.
Position and fix with. At this time, the second pneumatic cylinder 2
Each chain 28,2 is extended by extending 9,29.
8, the hooks 27 are loosened as shown in FIG. 6, and the hooks 27 are engaged with the hook engaging portions 51, 51, respectively. On the other hand, the vehicle body transport conveyor 11 that transports the vehicle body B to which both rear suspensions S are to be assembled is
When the vehicle body B has been transported to the mounting position MP, the vehicle temporarily stops.

When the vehicle body B is temporarily stopped, the worker performs an operation of engaging the hooks 27 with the engaging holes 26 of the cross beam 15, respectively. At this time, the second pneumatic cylinders 29, 29
No pulling force is applied to the chain 28, 28,
Since the hook 28 is in a loose state, the hooks 27, 27
Can easily be engaged with the engagement holes 26, 26. When the fourth pneumatic cylinder 40 is extended along with the hook engagement operation, the positioning rod 43 is extended.
Is fitted into the positioning hole 56 at the center of the cross beam 15 in the width direction, and the relative positions of the assembling device 14 and the cross beam 15 are determined.

Then, the piston rods 30a of the third pneumatic cylinders 30, 30 are moved by moving frames 47, 47 while the second pneumatic cylinders 29, 29 are contracted and each chain 28, 28 is pulled by a predetermined length. , Respectively, so as to prevent the movement of the chains 28, 28, and the lift 24 is raised by the first pneumatic cylinder 25 as shown in FIG. 7. Ie chain 2
When the elevator 24 is raised by keeping the distance between the vehicle body B on the hangers 12 and 12 and the support base 23 at a predetermined distance by the use of the elevators 8 and 28, the upper end of the vehicle body B
Even if the coil spring 20 abutted on the side exerts a spring force,
The coil spring 20 can be compressed between the lift 24 and the vehicle body B while preventing the vehicle body B from rising from the hangers 12, 12. Therefore, the coil spring 2
0 and both rear suspensions S ...
Can be assembled.

Further, the hooks 27, 27 provided at one end of the pair of chains 28, 28 are engaged at positions spaced from the longitudinal center of the cross beam 15 on both left and right sides. Even if one of the suspensions S is assembled to the vehicle body B first, the coil spring 20 of the one rear suspension S does not rotate the vehicle body B to the left or right. It can be assembled to the rear part of the vehicle body B with good workability.

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the appended claims. It is possible to do.

For example, in the above embodiment, the second pneumatic cylinders 29, 29 as chain drive means are connected to each of the pair of chains 28, 28, but a single chain is commonly used for both chains 28, 28. The driving means may be connected, and in that case, the locking means may be single.

[0034]

As described above, according to the first aspect of the present invention, the operation of engaging the hook with the engagement hole can be easily performed, and the coil spring is prevented while the vehicle body is prevented from rising from the hanger. And both rear suspensions can be assembled to the vehicle body.

According to the second aspect of the invention, the left and right rear suspensions can be attached to the rear portion of the vehicle body with good workability by preventing the vehicle body from turning left or right.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an assembled state of a rear suspension on a vehicle body.

FIG. 2 is a view of the assembling apparatus before the lifting platform and the positioning rod are lifted as viewed from the direction of arrow 2 in FIG. 1;

FIG. 3 is an enlarged view of a main part of FIG. 2;

FIG. 4 is a sectional view taken along line 4-4 of FIG. 3;

FIG. 5 is a sectional view taken along line 5-5 in FIG. 4;

FIG. 6 is a cross-sectional view corresponding to FIG. 4 in a state where the hook is in a standby state at a standby position.

FIG. 7 is a cross-sectional view corresponding to FIG. 4 in a state where the lifting platform and the positioning rod are raised.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Car body conveyance conveyor 12 ... Hanger 13 ... Transport direction 14 ... Assembly device 16 ... Arm 17 ... Knuckle 20 ... Coil spring 23 ... Support stand 24 ... · Lifting table 25 ··· First pneumatic cylinder as lifting / lowering driving means 26 ··· Engagement hole 27 ··· Hook 28 ··· Chain 29 ··· Second pneumatic cylinder as chain driving means 30 Third pneumatic cylinder as locking means B: body S: rear suspension

Claims (2)

[Claims] 1. An arm (16) having a base end swingably connected to a rear portion of a vehicle body (B), a knuckle (17) connected to a distal end of the arm (16), and a knuckle (17). )
Spring force in the direction of pushing down the arm (16)
A rear suspension assembling apparatus for mounting a pair of left and right rear suspensions (S) having a coil spring (20) acting on an intermediate portion of the rear body on the left and right sides of a rear part of the vehicle body (B). A support stand (23) which can be positioned and fixed below the vehicle body (B) at a predetermined position along a transport direction (13) of a vehicle body conveyor (11) provided with a hanger (12) for mounting the vehicle body (B); A pair of left and right rear suspensions (S) can be placed on each other, and are supported by the support table (23) so as to be able to move up and down.
4) a lifting drive means (25) provided between the support table (23) and the lifting table (24); and a hook capable of engaging with an engagement hole (26) provided at a rear portion of the vehicle body (B). A chain (28) having one end (27) fixed thereto, and a chain driving means (2) fixedly mounted on the support (23) so as to be able to pull the chain (28).
9) and the chain (2) by the chain driving means (29).
8) with each chain (2) being pulled by a predetermined length.
8) to prevent the movement of the support table (2).
And a lock means (30) provided in (3). 2. A pair of engagement holes (26) are provided at positions spaced from the center in the width direction of the rear part of the vehicle body (B) on both left and right sides.
And a pair of chains (2) having at one end a hook (27) engageable with each of the engagement holes (26).
2. A device for assembling a rear suspension to a vehicle body according to claim 1, wherein a chain drive means (29) is connected to said (8).