JPH0132625Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a work transport device used when constructing piping, wiring, etc. to a cab in a truck manufacturing factory.

In many truck manufacturing plants, conveying devices using hangers are used to install various types of piping and wiring inside cabs and under the floor, and to carry out various outfitting operations. However, since the above-mentioned transport equipment is generally not equipped with an elevating device, a pit is provided under the factory floor along the travel line of the transport equipment for installation work such as piping under the floor, and workers are placed in the pit. It is normal for them to go in and do the necessary work. Therefore, not only does it require a large amount of civil engineering work to set up the pit, but the work environment is cramped and cramped for the workers, and workers sometimes suffer from inconveniences such as falling into the pit and getting injured due to carelessness. Ta.

The present invention was devised in view of the above, and includes a bogie mounted so that it can run along the tram rail, a pedestal suspended from the bogie by a parallel link device,
A hoist device that raises and lowers the pedestal mounted on the truck; a hanger device consisting of a pair of scissor-like arms hanging from the pedestal and gripping the cab; The gist of the present invention is to provide a working transport device for a truck cab, characterized in that it is equipped with a hanger swing device that is fixed or allowed to swing in the front-rear direction, and a device that prevents the pedestal from falling.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the figure, reference numeral 10 denotes a tram rail installed at a high place within the factory, and a bogie 14 is mounted on the rail via rolling wheels so that it can freely run. Reference numeral 16 denotes a traveling motor mounted on the trolley 14, and when an operator closes a running switch (not shown), the trolley 14 travels along the tram rail 10 (as necessary, it can be moved forward or backward using a reversible motor). make it possible). Further, a hoist 18, which is known per se, is provided on the trolley 14, and the pedestal 20 is suspended by the hoist. Frame 2
0 is supported so as to remain parallel to the bogie 14 by parallel link devices 22 provided in a pair in a direction perpendicular to the plane of the drawing, that is, in the vehicle width direction of the cab C in FIG. It is supported by a guide column 24 hanging vertically from the truck 14 and guided in the vertical direction. Further, the frame 20 has a pair of scissor-like arms 26 at both ends of the cab C in the vehicle width direction.
The scissor-like arms are pivotally supported on a swingable support base 28 constituting a hanger swing device to be described in detail later, and are rotated around a pivot 32 by actuators 30. , the cab C can be grasped or released as shown in FIG.

The hanger swing device shown in FIGS. 3 and 4 includes a support base 28 that pivotally supports a scissor-like arm 26, and the support base is equipped with a hanging arm 34 erected above. The upper end portion is pivoted on a corresponding bracket 36 provided on the pedestal 20. Guide grooves 38 extending vertically in parallel are provided on both side edges of the bracket 36, and both side edges of a rectangular control plate 40 are slidably fitted into the guide grooves. Therefore, the handle 4 protruding from the control board 40
2, the operator can move the control plate 40 up and down. On the other hand, a stopper 44 is provided protruding from the hanging arm 34, and the stopper is connected to the control plate 4.
It is formed so that it can be engaged with an engagement hole 46 provided in 0. At the position indicated by the solid line in Figure 3,
Since the control plate 40 is lowered and the stopper 44 is engaged in its engagement hole 46, the hanging arm 34, and therefore the support base 28, cannot rotate around the support shaft 48. It is substantially fixed to the frame 20. However, when the control plate 40 is raised, the restraint of the stopper 44 is released, so the suspension arm 34 is moved to the third position.
It is possible to swing around the support shaft 48 within the range shown by dashed-dotted lines a-a and b-b in the figure.

Next, in order to prevent danger in the event that the rope of the hoist 18 suspending the pedestal 20 and the cab C is unexpectedly cut, the device of the present invention is provided with two types of fall prevention devices. One of them is through the safety chain 50. Same chain 5
0, as shown in FIG.
The other end is fixed to the top of the truck 14 through the ratchet wheel 52, fixed pulley 54, and movable pulley 56 on the truck 14.
It is locked on 4. The movable pulley 56 is connected to a rope or chain 62 that runs through a fixed pulley 58 at the lower end of the guide column 24 to a well-known spring balancer 60.
is connected to. A spring-loaded pawl rod 64 is always engaged with the ratchet wheel 52 to prevent the chain 50 from lowering, that is, the pedestal 20. Actuator 6
6, the pawl rod 64 is disengaged from the ratchet wheel 52, allowing the pedestal 20 to descend. The second fall prevention device is indicated by the reference numeral 68 in FIG.
70, and these eccentric wheels are normally slightly separated from the flange 24' due to weak spring force, etc., but the moment the rope of the hoist 18 breaks, they bite into the flange 24' by a mechanism to be described later. The frame 20 is brought into contact with the frame 20 to prevent it from falling. That is, as shown in FIG. 5, the pulley 72 around which the rope 18' of the hoist 18 is wound is substantially integrated with the hanging bolt 74, and the lower end portion of the hanging bolt 74 is loosely connected to the hole 76 of the frame 20. The collar 74' is fixed to the pedestal 20 through it. on the other hand,
A rubber tube (or a coil spring of equal force) 78 fitted in the hole 76 has one end in contact with the middle portion of an operating rod 82 which is pivotally connected to a pin 80, and the other end of the rod is in contact with a spring 84. It is connected to the locking member 86 of the second fall prevention device 68 via the locking member 86 of the second fall prevention device 68. When the pedestal 20 is suspended by the hoist 18, the rubber tube 78 is compressed in the axial direction of the hanging bolt 74, and the operating rod 82 is activated by the upward force due to the compression reaction force of the rubber tube 78 and the spring 84. It is in equilibrium with the downward force acting on it. Therefore, when the hoist rope 18' is cut, the hanging bolt 74 is released and the upward force on the rubber tube 78 disappears.
An actuation rod 82 is rotated around pin 80 by a spring 84. Therefore, the locking member 86 is actuated via the spring 84, and the eccentric wheel 70 bites into the flange 24' of the guide column 24 to reliably prevent the pedestal 20, that is, the cab C, from falling.

The bogie 14 is provided with a comb-like engagement member 88 that meshes with a traveling chain (not shown) of an outfitting line running parallel to the tram rail 10 to synchronize with the line, and is actuated by an appropriate actuator 90. It is configured so that it can be connected to and disconnected from the chain of the line.

According to the above-mentioned apparatus, various outfitting operations inside the cab C are carried out at the lowered position shown in FIG.
Since the work can be carried out by lifting the machine upward, there is no need to provide a pit in the factory, and the worker has the advantage of being able to work comfortably in a good environment. In addition, in the lifted state, the pedestal 20 itself is
A scissor-shaped arm 2 that is stably supported by the parallel link device 22 and the guide column 24 and further directly supports the cab C.
6 is held in place by fixing its support base 28 in the longitudinal direction of the cab with the device detailed in FIGS. 3 and 4, so that underfloor work can be carried out safely and efficiently. . Furthermore, in the unlikely event that rope 1 of hoist 18 is
Even if the cable 8' breaks, the above-mentioned double drop prevention device reliably prevents the cab C from falling, so it is safe. On the other hand, in order to facilitate the transportation and loading of Cab C, except when working under the floor,
It is extremely convenient to hold the control plate 40 in FIGS. 3 and 4 in the raised position so that the scissor-like arm 26 and, therefore, its support 28 can be swung over a sufficient angular range in the longitudinal direction of the cab. .

As mentioned above, the truck cab working conveyance device according to the present invention includes a truck mounted so as to be able to travel along a tram rail, a pedestal suspended from the truck by a parallel link device, and a pedestal suspended from the truck by a parallel link device. A hoist device is provided for raising and lowering the pedestal, a hanger device consisting of a pair of scissor-shaped arms hanging from the pedestal and gripping the cab, and the hanger device is fixed in the front and back direction around a pivot shaft on the pedestal. The device is characterized by being equipped with a hanger swing device that allows swinging or swinging, and a device that prevents the above-mentioned frame from falling, and enables outfitting work in the cab of a truck to be carried out safely and efficiently without the need to provide pits in the factory. This is very advantageous because it can be carried out.

[Brief explanation of the drawing]

Fig. 1 is an overall side view showing one embodiment of the conveying device of the present invention, Fig. 2 is a partial front view of the lower part of the device in Fig. 1, and Fig. 3 is an enlarged view of the hanger swing device in Fig. 2. A side view, FIG. 4 is a sectional view taken along the line - in FIG. 3, and FIG. 5 is a pedestal 2 in the device in FIG.
FIG. 2 is a partially enlarged view showing a hanging part of No. 10...tram rail, 14...bogie, 18...
... Hoist, 20 ... Frame, 22 ... Parallel link device, 24 ... Guide column, 26 ... Scissor-like arm, 28 ...
...Support stand, 50...Safety chain, 68...Second
Fall protection device.

Claims (1)

[Scope of utility model registration request] A bogie mounted so as to be able to run along a tram rail, a pedestal suspended from the tram by a parallel link device, a hoist device installed on the bogie for raising and lowering the pedestal vertically, and a hoist device vertically suspended from the tram. A hanger device consisting of a pair of scissor-like arms that grips the cab, a hanger swing device that fixes or allows the hanger device to swing back and forth around a pivot shaft on the pedestal, and prevents the pedestal from falling. A working transport device for a truck cab, characterized in that it is equipped with a device for.