JPH0541556B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides a method for removing a working machine such as a swing crane or a swing earth-moving machine that is mounted on a traveling device so that the top and bottom can be separated, and transporting it separately from the traveling device. This invention relates to a jack attachment/detachment device for a vehicle-mounted work machine, which is necessary when replacing the work machine with another work machine.

(Prior art) As shown in FIG. 11, a swivel base 2 on which a telescoping boom 1 is cantilever-supported by a derrick cylinder 8 and a chassis 3 at the rear of an automobile are connected by a turntable 4 that can be separated vertically. In a truck crane, ground jacks 5 and 6 that can be extended on both sides so as to straddle the rear chassis are attached to the front and back of the center of gravity of the telescopic boom and swivel platform combination (work equipment) fixed in the collapsed position, and lifted by the ground jacks. An invention in which a working machine is disassembled or assembled by running a car on the working machine is disclosed in Japanese Patent Application Laid-Open No. 54-122554.
It is shown in the publication No.

(Problems to be Solved by the Invention) In such a truck crane, since the counterweight 7 must be removably attached to the rear end of the swivel base 2, it is difficult to fix and support the rear ground jack 6 on the swivel base. However, the installation of the ground jack increases the size of the swivel base 2 and increases the weight by several tons, which increases power loss during cargo handling operations and road transport, and limits the capacity of the transport trailer. In addition, it is not possible to disassemble and assemble multiple truck cranes using one set of ground jacks.

(Means for Solving the Problems) The present invention addresses this problem, and includes: (1) a device for removably attaching a support frame of a ground jack to a working machine that is attached vertically and separably on a traveling device; A pair of upper and lower horizontal pins are attached to both sides of the support frame, which can be placed upright on the traveling device, parallel to the support frame, and a pair of upper and lower horizontal pins are respectively mounted on both sides of the work machine so as to be able to be freely engaged with and detached from the respective horizontal pins. a pair of upper and lower hooks that form a parallel crank mechanism for raising and lowering the support frame when engaged with each of the horizontal pins; and an extendable hook that connects the tip of one of the upper and lower hooks with the base of the other. and a cylinder, the upper and lower hooks are arranged so that the support frame can be raised and lowered between the mounting position on the traveling device and the mounting position on the work machine by the difference in rotational force between the upper and lower hooks caused by the telescoping cylinder. A jack attachment/detachment device for a vehicle-mounted work machine, characterized in that hook openings are provided in upside-down directions.

(2) A device for removably attaching a support frame for a ground jack to a working machine that is mounted on a traveling device so that the top and bottom can be separated, and a support frame that can be mounted upright on the traveling device, and parallel to the support frame on each side. A pair of upper and lower horizontal pins attached to the horizontal pins are pivoted on both sides of the working machine so as to be able to freely engage with each of the horizontal pins, and when engaged with each of the horizontal pins, form a parallel crank mechanism for raising and lowering the support frame. a first upper and lower hook;
a telescopic cylinder connecting the tip of the upper hook and the base of the first lower hook, the hook opening of the first upper hook facing upward, and the hook opening of the first lower hook facing downward, Separable fastening means are provided between the work equipment and the support frame and the first upper hook that have been lifted to the mounting position thereon, and on the other hand, on both sides of the support frame, ground jacks of equal length and parallel are provided to support ground jacks so as to be movable up and down. The upper and lower links are pivotally mounted, and a separable restraining means is provided for fixing the upper and lower links to the support frame in the raised and lowered positions of the ground jack, and the ground jack is connected to the ground jack from the support frame side end of the upper link. Through a universal joint to the tip of the arm protruding to the opposite side,
A hanging frame having a horizontal pin attached to the lower end is connected, and a second lower hook having a downward hook opening that allows the horizontal pin on the side of the hanging frame to be engaged and detached is integrally arranged in parallel with the first lower hook, The hanging frame is moved so that the axes of the horizontal pin at the lower end of the hanging frame to which the second lower hook is to be engaged and disengaged and the fixed horizontal pin on the support frame side to which the first lower hook is to be engaged and disengaged coincide with each other at the raised position of the ground jack with respect to the supporting frame. A jack attachment/detachment device for a vehicle-mounted work machine, characterized by the following configuration.

The gist is:

(Function) In the above invention (1), when attaching the ground jack to a work machine, the upper and lower hooks are held in positions where they do not interfere with the horizontal pins on the support frame side, and the support frame of the ground jack in the contracted state is is positioned and placed upright on the traveling device, and then the telescopic cylinder is controlled to rotate the upper and lower hooks so as to engage with the corresponding horizontal pins, and the work machine side pivot shaft of the upper and lower hooks is rotated to engage with the corresponding horizontal pin. Since the upper and lower horizontal pins on the supporting frame side are located at the vertices of the parallelogram, the upper and lower hooks are maintained in engagement with the corresponding upper and lower horizontal pins by the rotational force of the telescoping cylinder, and the parallel crank mechanism is activated. At the same time, since the telescopic cylinder connects the tip of one of the upper and lower hooks to the base of the other, the difference in rotational force between the upper and lower hooks allows the support frame to be operated in an upright position. Lift it into a fixed position on the machine. It is clear that when the ground jack is lowered from the working machine onto the traveling device, the telescopic cylinder may be gradually operated in the opposite direction to the above.

In the case of the invention (2) above, the telescopic cylinder is installed between the tip of the upper hook and the base of the lower hook, and the hook opening of the upper hook is oriented upward, and the hook opening of the lower hook is oriented upward. Since they each open downward, when installing the contracted ground jack to the work machine, the telescopic cylinder is fully contracted and the upper and lower hooks are held in a position where they do not interfere with the horizontal pin, as shown in Figure 6. By positioning and placing the support frame on the traveling device and then extending the telescopic cylinder, the difference in rotational force between the upper and lower hooks is utilized after the upper and lower hooks are connected to the horizontal pin as shown in Fig. 7. Then, as shown in FIG. 1, lifting the support frame to the position where it is fixed to the working machine is similar to the (1) invention. In this case, the equal length and parallel upper and lower links are restrained in the folded position relative to the support frame, as shown by solid lines in FIG. 3, to hold the ground jack in the raised position.

For this reason, the axes of the fixed horizontal pin on the support frame side with which the first and second lower hooks engage, respectively, and the horizontal pin at the lower end of the hanging frame match, so that the second lower hook rotates in conjunction with the first lower hook. However, there is no problem at all.

When the support frame is lifted to the mounting position on the work machine, the upper hook and support frame are fixed to the work machine, and then the upper and lower links are released from the support frame and the telescopic cylinder is gradually retracted, allowing the work machine to be attached to the work machine. Both the first and second lower hooks rotate upward relative to the upper hook that is fixedly supported by the upper hook. On the other hand, the ground jack connected to the support frame via the upper and lower links is constantly forced downward by the action of gravity, so the horizontal pin at the lower end of the hanging frame, which is connected to the arm of the upper link via the universal joint, 2. Maintain the engaged state with the lower hook.

Therefore, as the telescopic cylinder contracts, the hanging frame tilts and rises as shown in Figure 8, and the ground jack, which is held vertically via mutually parallel upper and lower links, is lowered to the position shown by the chain line in Figure 3. . Therefore, if the upper and lower links are fixed to the support frame,
The ground jacks on both sides are in a state where they straddle the traveling device, and it becomes possible to lift the work machine by extending both ground jacks to which the ground plate at the lower end is attached. It is clear that when lowering the support frame from the working machine onto the traveling device, the operations described above can be performed in the reverse order.

(Embodiment) FIGS. 1 to 10 show an embodiment of the present invention applied to the truck crane shown in FIG. It is installed in place of a counterweight (not shown).

As shown in FIGS. 1 and 5, the support frame 9 is constructed by connecting and fixing the form columns 9a and 9a on both sides together with upper and lower horizontal beams 9b and diagonal beams 9c. As shown in FIG. 1, a pair of upper and lower horizontal pins 10 and 11 are fixed to a cap-shaped bracket 9d at the upper end of each molding column and to the inner lower part of the molding column. 9e is a seat plate fixed to the lower end of each mold column 9a in a T-shape on the side, and a conical projection 1 is provided on the upper surface of the seat plate 9e on the swivel table side.
2, and a conical hole 13 is provided on the opposite side.

On both sides of the support frame 9, upper and lower links 14, 15 are arranged symmetrically with respect to the center line O-O and are of equal length and parallel.
A vertical ground jack (hydraulic cylinder) 16 is connected via the (Fig. 3), and the base of the upper link 14 is fixed to a bracket 17 installed in the support frame 9 with a removable pin 18. When the vertical link is fixed to the support frame 9, the ground jack 16 is restrained in the raised position shown by the solid line in FIG. In this state, an arm 19 protrudes from the support frame side end of the upper link 14 to the side opposite to the ground jack as shown in FIG.
A horizontal pin 22 at the lower end of the hanging frame 21 connected to the tip of the frame via a universal joint 20 (see FIGS. 9 and 10) is located on the same axis as the horizontal pin 11, and the horizontal pin 22 is connected to the support frame 9. It rests on the planted stopper 23.

Reference numerals 24 and 25 indicate first upper and lower hooks that face the upper and lower horizontal pins 10 and 11, respectively; 26 and 27 indicate second upper and lower hooks that face the upper and lower horizontal pins 10 and 22, respectively; upper hook 24,2
The base of 6 is pivoted by a common shaft 29 within a frame-shaped bracket 28 fixed to the rear end wall of the swivel base (working machine) 2, and has an upward hook opening, and has first and second lower hooks. The bases of 25 and 27 are pivoted within the frame bracket 28 by a common axis 30 and are provided with downward hook openings. The hydraulically operated telescopic cylinder 31 has an upper end of its piston rod pivoted between the tips of the first and second upper hooks 24 and 26 via a shaft 32, and a lower end of the cylinder that is connected to the first and second lower hooks 25 and 27. The shaft 33 is pivotally connected between the bases of the shaft 33.

Reference numeral 34 denotes a stopper fixed in the frame-shaped bracket 28 corresponding to the first and second upper hooks 24 and 26, so that when the telescopic cylinder 31 is fully contracted, the first and second upper and lower hooks are vertically horizontal on the support frame side. pin 10,1
The first and second upper hooks 24 and 26 are held in the position shown in FIG. 6 so as not to interfere with the upper hooks 1 and 22.

Reference numeral 35 designates a mounting base for the support frame 9 mounted on the automobile chassis 3, and the conical protrusions 36 on the upper surface of the support frame 9 are fitted into the conical holes 13 of each support frame seat plate 9e. Support frame 9 lifted by telescopic boom
When the swivel table is rotated in the same manner as in FIG. 11 after being placed upright on the mounting table 35, the first and second upper and lower hooks can engage with the upper and lower horizontal pins on the support frame side, respectively. The relative positions shown in Figure 6 are as follows.

Therefore, if the telescoping cylinder 31 is extended in this state, the support frame 9 will be extended by the extension of the telescoping cylinder after the first and second upper and lower hooks engage with the upper and lower horizontal pins, respectively, as shown in FIG. As mentioned above, the first
It is lifted to the position shown.

The fastening means between the swivel base 2, the support frame lifted to the mounting position thereon, and the first and second upper hooks is a conical hole into which the conical protrusion 12 of each support frame seat plate 9e fits. 37 is provided on the bottom plate portion of the frame-shaped bracket 28, and the first and second upper hooks 24, 26
is fixed to the frame-shaped bracket 28 with a removable pin 38 (FIG. 1).

Therefore, with the upper hook and support frame 9 fixed to the swivel base 2 with pins 38, if the connecting pins 18 of the upper link 14 and bracket 17 on both sides are removed and the telescopic cylinder 31 is gradually contracted, the ground on both sides can be removed. The jack 16 can be extended and lowered as shown by chain lines in FIGS. 3 and 8. In the illustrated case, in order to reliably maintain the engagement between the second lower hook 27 and the horizontal pin 22 when the ground jack 16 is in the lowered position, as shown in FIGS. 9 and 10, the hanging frame is 21
A cam 39 is fixed to the support frame 9, with which the upper end extension portion 21a abuts and engages. In FIG. 9, reference numeral 40 indicates a connecting shaft of the upper link 14, and 41 indicates an upper link connecting bracket on the support frame side.

Vertical link 1 in the ground jack lowered position
4 and 15 to the support frame 9 is the third
As shown in the figure, the connecting pin 18 is inserted into the lower end pin hole 44 of the connecting rod 43 whose upper end is pivotally connected using the ground jack connecting shaft 42 of the upper link 14 and the pin hole 45 provided at the base of the lower link 15. It becomes like that. The illustrated connecting rod 43 has two front and rear strips connected and fixed together by upper and lower short tubes 46, and the lower short tube 46 is slidably supported on the lower link 15. Reference numeral 47 denotes a stopper that is fixed and protrudes from the base of the lower link 15 in the front and back, and when the lower end of the connecting rod 43 abuts and engages with the stopper 47, the pin holes 44, 4
5 matches.

The counterweight attached to the swivel base 2 instead of the support frame 9 has upper and lower horizontal pins 1 on both sides of the support frame.
Of course, members corresponding to the conical projections 0 and 11, the conical projections 12, and the conical holes 13 are provided.

Above, an embodiment has been described in which the support frame 9 can be attached to and removed from the swivel base 2 using the telescopic cylinder 31, and the parallel links for supporting the ground jack can be folded and extended with respect to the swivel base. Install an extendable horizontal telescopic beam,
It is clear from the above embodiments that the present invention can also be applied to a case where a vertical multi-stage ground jack is attached to the tip of each telescoping beam. In this case, if the support frame is transported by multiple crane trucks, the 12th
As shown in the figure, the hook openings of the pair of upper and lower hooks 24 and 25 are provided in the upside down direction compared to the embodiment shown in FIG. By connecting the upper and lower hooks 24 and 25, the support frame 9 can be raised and lowered by the difference in rotational force between the upper and lower hooks 24 and 25.

In FIG. 12, members given the same reference numerals as in FIG. 1 are corresponding members. Note that 48 indicates a horizontal telescoping beam attached to the support frame 9.

(Effects of the Invention) According to the present invention, the weight increase caused by constantly attaching a ground jacking device to a work machine as in the past causes power loss during work or disassembly and transport, and the transport trailer There is no fear that the capacity will be limited, and moreover, multiple on-vehicle working machines can be disassembled and assembled with one set of ground jacks.

In addition, it is not only possible to attach and detach the ground jack support frame to and from the working machine and fold and extend the parallel links for supporting the ground jack using one set of telescoping cylinders, but it is also necessary to use a multi-stage hydraulic cylinder for the ground jack as in the past. There are effects such as no

[Brief explanation of the drawing]

Figures 1 and 2 are longitudinal sectional side views taken along lines X-X and Y-Y in Figure 3, Figure 3 is a rear view, and Figures 4 and 5 are rear views of the swivel base, respectively. and a front view of the support frame, FIGS. 6 and 7 are longitudinal sectional side views showing the operation progress corresponding to FIG. 1, FIG. 8 is a longitudinal sectional side view when the ground jack is extended, and FIG. 10 is a detailed view of the main parts, FIG. 10 is a Z-direction view, FIG. 11 is a side view of a conventional device, and FIG. 12 is a side view schematically showing another embodiment of the present invention. 1...Telescopic boom, 2...Swivel base, 3...Car rear chassis, 4...Turntable, 9...Support frame, 10, 11...Horizontal pin, 14, 15...
Up/down link, 16... Ground jack, 17... Bracket, 18... Pin, 19... Arm, 20
... Universal joint, 21 ... Hanging frame, 22 ... Horizontal pin, 24, 25 ... First vertical hook, 26, 2
7... Second upper and lower hook, 31... Telescopic cylinder, 38... Pin that can be freely inserted and removed, 43... Continuous rod.

Claims (1)

[Scope of Claims] 1. A device for removably attaching a support frame for a ground jack to a working machine that is vertically and separably mounted on a traveling device, the support frame being mounted on both sides of the support frame that can be placed upright on the traveling device. A pair of upper and lower horizontal pins are installed in parallel with each other, and a pair of horizontal pins are pivoted on both sides of the working machine so as to be able to be freely engaged with and detached from each of the horizontal pins, and when engaged with each of the horizontal pins, a pair of horizontal pins are installed parallel to each other to raise and lower the support frame. It includes a pair of upper and lower hooks that form a crank mechanism, and a telescoping cylinder that connects the tip of one of the upper and lower hooks to the base of the other, and the difference in rotational force between the upper and lower hooks due to the telescoping cylinder is Therefore, the hook openings of the upper and lower hooks are provided in opposite directions to each other so that the support frame can be raised and lowered between the mounting position on the traveling device and the mounting position on the work machine. Jack attachment/detachment device to work equipment. 2 A device for removably attaching a support frame for a ground jack to a working machine that is mounted on a traveling device so that the top and bottom can be separated, and that is installed parallel to both sides of the support frame that can be placed upright on the traveling device. a pair of upper and lower horizontal pins, and a crank mechanism that is pivotally mounted on both sides of the working machine so as to be able to be freely engaged with and detached from each of the horizontal pins, and which forms a parallel crank mechanism for raising and lowering the support frame when engaged with each of the horizontal pins. 1 upper and lower hooks, and a telescoping cylinder that connects the tip of the first upper hook and the base of the first lower hook, the hook opening of the first upper hook is directed upward, and the hook opening of the first lower hook is directed upward. The hook openings are respectively provided downward, and separable fastening means are provided between the work machine and the support frame lifted to the mounting position thereon and the first upper hook, while ground jacks are provided on both sides of the support frame, respectively. A separable restraining means is provided for pivotally supporting upper and lower links of equal length and parallel that are movable up and down, and that can fix the upper and lower links to a support frame in a raised position and a lowered position of the ground jack, and an upper link. A hanging frame with a horizontal pin attached to the lower end is connected via a universal joint to the tip of an arm protruding from the end of the supporting frame side to the side opposite to the ground jack, and the hanging frame is detachable from the horizontal pin on the hanging frame side. A second lower hook with a downward hook opening is attached to the first hook.
The axis of the horizontal pin at the lower end of the hanging frame, which is installed in parallel with the lower hook, to which the second lower hook is to be engaged and disengaged, and the fixed horizontal pin on the support frame side, which is to be engaged and disengaged by the first lower hook, is aligned with the axis of the ground jack with respect to the support frame. A jack attachment/detachment device for a vehicle-mounted work machine, characterized in that a hanging frame is configured to match in a raised position.