KR20000033697A - Method for disassembling and assembling crane - Google Patents

Abstract

PURPOSE: A method for disassembling and assembling a crane is provided to safely and easily disassemble and assemble a crane without using additional pieces. CONSTITUTION: A length of a boom supporter(24) is fixed by a locker(54), a lower boom(18) is stopped after rising at a certain height by rotating in the direction of winding a boom winch(46). By operating a gantry cylinder(44) while continuously rotating the boom winch, a counter-weighter(16) rises and moves to a proper position on a body(10). By rotating the winch in reverse direction, the counter-weight is placed on a certain position of the body accurately. Thereby the crane is assembled in basic state of being able to perform basic pulling and unloading works. To lengthen a boom assembly as long as a middle boom, a bridle is released from a boom nose(22). The bridle is fixed on the upper end of the lower boom, the lower boom is separated from an upper boom(20), and the middle boom is connected between the lower boom and the upper boom. When a longer boom assembly is needed, another middle boom is installed and the middle booms are interconnected.

Description

How to disassemble and assemble a crane

The present invention relates to a method of disassembling and assembling a crane, and more particularly, to a method of disassembling and assembling a crane capable of disassembling and assembling components, such as a track, a boom, and a counterweight, on a crane body.

In general, cranes are widely used for lifting or unloading heavy goods or cargo at a place such as a construction site or a loading dock. Such a crane has no problem when lifting or unloading work in the workshop in a fully assembled state, but some problems have occurred in order to move the crane to another workshop.

That is, the crane itself is not only very heavy, but also the weight of each component constituting the crane is excessive, so when the operator drives and moves the crane directly, not only excessive power is required by the load of the crane itself but also the road is severely damaged. There was a problem of damage. Accordingly, in order to move a crane, the crane must be disassembled or dismantled in whole or in part. However, even when dismantling the crane in this way, due to the excessive weight of each component is used a separate heavy equipment such as an auxiliary crane or forklift.

Accordingly, in recent years, studies are being actively conducted to disassemble and assemble cranes without using separate equipment, and one example of such a self-disassembly method of such a crane is disclosed in US Pat. No. 5,484,069. In the schematic description of the crane disassembly method disclosed in this US patent, all the booms except the lower boom of the crane are dismantled and removed, and the lifting rope is also wound on the winch. Connect the bridle to the lower boom and secure the lower boom with the boom-stop and boom-cylinder, then unscrew the boom-winch to unfold the gantry and lower the gantry cylinder. Ascend and assemble each other while supporting the gantry.

Then, install a connecting rod between the gantry and the counterweight (counterweight), lower the boom winch and the gantry cylinder and remove the counterweight. Connect the lifting rope to the one-stage boom sheave, attach the hook, erect the gantry again, depressurize the boom cylinder, move the boom vertically, deploy the jack-up cylinder to incline the car body, I support it.

Next, the crawler track is removed using a lifting rope and a boom lift rope supporting the hooks. Subsequently, the gantry and the boom are lowered and the lifting rope connected to the lower boom sheave is connected to the bridle using the boom sheave. Then remove the bridle and the lower boom and adjust the lifting rope and boom lift rope to connect to the bridle.

Thereafter, the boom winch is wound to rest on the gantry, and then the gantry is completely lowered, and then the bridle is completely fixed to the gantry. The lower part of the boom support is dismantled and the boom is lowered using a lifting rope. After dismantling the foot, the lifting rope is wound up.

Finally, the crane body is lifted with the jack-up cylinder to move the moving trailer to the lower part of the crane, and then the jack-up cylinder is contracted and the vehicle body is seated and mounted on the trailer, thereby dismantling the crane. After that, of course, the driver can operate the trailer to move the crane in the dismantled state for each part.

However, this crane disassembly method can be disassembled without the use of a separate heavy equipment such as an auxiliary crane or forklift, but it is still necessary to employ a boom cylinder and add a sheave to the lower boom. In addition to complicating the configuration, there was a problem that the cost is excessively consumed.

In addition, there is a problem that affects the safety of the worker, as the body of the crane to be inclined to maintain the level of the body by using the wood in the inclined state.

Accordingly, the present invention has been invented to solve the above problems, an object of the present invention is to provide a crane disassembly and assembly method that can be easily and safely disassemble and assemble a crane without using any means.

1 is a side view showing a crane to which the disassembly and assembly method according to the invention is applied.

Figure 2 is a side view showing a state in which the crane of Figure 1 is loaded on the trailer transport.

Figure 3 is a side view showing a state in which the jack up arm deployed in the crane is supported on the ground.

Figure 4 is a side view showing the step of mounting the boom nose to the bottom boom.

Figure 5 is a side view showing the step of lifting the crawler track to mount the crawler track to the crane.

Figure 6 is a side view showing the step of aligning the crawler track to the body of the crane.

Figure 7 is a side view showing the step of assembling the crawler track of one side to the vehicle body.

Figure 8 is a side view showing the step of assembling the crawler track of the other side to the vehicle body.

9 is a side view showing a state in which the jack-up arm is raised and spaced apart from the ground.

10 is a side view showing a step of disassembling the boom nose.

Figure 11 is a side view showing the step of assembling the upper boom to the lower boom.

12 is a side view showing the step of connecting the pendant rope to the boom nose and the boom lock.

13 is a side view showing the step of lifting the counter waiter to mount the counter waiter on the vehicle body;

14 is a side view showing a state in which the counter weight is mounted on the vehicle body;

15 is a side view showing a step of dismantling the upper boom and the lower boom.

Figure 16 is a side view showing the step of mounting one intermediate boom between the upper boom and the lower boom.

17 is a side view illustrating a method of mounting two intermediate booms between an upper boom and a lower boom.

18 is a use state diagram showing a state in which the lifting operation is executed in a state in which two intermediate boom deposition is completed.

♣ Explanation of symbols for the main parts of the drawing ♣

10: track 12: bodywork

14: cabin 16: counterweight

18: lower boom 20: upper boom

22: boom nose 22a: main body

22b: adapter 24: boom support

26: Hoistrow 28: Main winch

30: Pendant Rope 32: Bridal

34: boom hoistrow 36: veil

38: gantry 40: support member

44: gantry cylinder 50: spring

These objects include the steps of connecting the counter weight to the top of the gantry, dismantling the counter waiter by operating the boom winch; Disassembling the boom nose from the top of the upper boom and fixing the bridle to the lower boom, then dismantling the upper boom from the lower boom; Mounting the boom nose to a lower boom, connecting a bridle to the boom nose, and supporting a jack-up arm on the ground to dismantle the tracks on both sides; Dismantling the bridle from the boom nose and fixed to the bottom boom, the step of disassembling the boom nose from the bottom boom; can be achieved by the disassembly method of the crane consisting of.

In addition, according to one aspect of the present invention, by unfolding and lowering the jack-up arm fixed to the vehicle body fixed to the ground and operating the gantry cylinder to rotate the gantry upwards, mounting the boom nose to the lower boom, end of the pendant rope After fixing to the boom nose and rotating the lower boom upwards, install the tracks on both sides of the body and contract the jack-up arms to seat the track on the ground, release the boom nose from the lower boom and wind the hoist rope and pendant After fixing the rope and bridle to the top of the bottom boom, connecting the top boom to the bottom boom and mounting the boom nose to the top boom, fixing the pendant rope connected to the bridle to the boom nose and the length of the boom support body with the rocker. After fixing the weight, connect the counter weight to the top of the gantry using wire and rotate the boom winch to lift the counter weight. A method of assembling a crane comprising the steps of: mounting the features.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a side view showing the overall structure of the crane is applied to the disassembly and assembly method according to the present invention, Figures 2 to 14 are side views showing the disassembly and assembly method of the crane according to the present invention in each step And the front view is shown, it will be understood that the division of the side view and the front view according to the orientation of the crawler track shown in the figure.

First, referring to FIG. 1, a crane to which a disassembly and assembly method according to the present invention is applied basically includes a track 10 moving or supported on the ground, and the vehicle body 12 is rotatable on top of the track. It is installed. The vehicle body 12 is, of course, provided with a manner in which the cabin 14 and the counter weight 16 face each other. In addition, the boom assembly is rotatable and variable length type is installed in the vehicle body 12, the boom assembly is basically provided with a lower boom 18 and the upper boom 20, the upper end of the upper boom 20 The boom nose 22 is mounted. Of course, the lower boom 18 is rotatably supported by the boom support 24 to the vehicle body. In addition, the boom nose 22 is actually supported by a hoist rope 26 for lifting or unloading the heavy material, the hoist rope 26 is rotatably installed on the body 12, the main winch 28 Is wound on. In addition, one end of the pendant rope 30 is fixed to the boom nose 22, and the other end of the pendant rope 30 is connected to the bridal 32, and the boom hoist rope ( One end of 34 is fixed and the rope is movably spanned to the bale 36. The bale 36 is rotatably fixed to the gantry 38 rotatably fixed to the vehicle body 10. On the other hand, the gantry 38 is fixed to the upper end of the connector 42 which is rotatably fixed to the vehicle body 12 by the support member 40, the support member 40 and the connector 42 is a gantry cylinder ( 44, and are thus connected to each other as a result of the rotation of the gantry 38. Here, the other end of the boom hoist rope 34 is wound around the boom winch 46 rotatably installed on the vehicle body 12, and a spring 50 is inserted in the lower part of the boom support 24, and the vehicle body is auxiliary. Auxiliary winch 48 that can be used is installed.

In particular, the boom nose 22 applied to the crane according to the present invention as described in detail below is composed of a main body 22a and an adapter 22b for mounting the main body 22a to the upper boom or the lower boom, Can be optionally mounted on the desired boom.

Hereinafter, a method of assembling a crane according to the present invention in accordance with the order shown in the drawings will be described with reference to FIGS.

First, in the state where the crane is disassembled and moved, as shown in FIG. 2, the vehicle body 10 is normally loaded on the trailer T, where the bridle 32 is located at the top of the lower boom 18. It is fixed.

In this state, the operator unfolds and lowers the jackup arm 52 fixed to the vehicle body 12 to fix it to the ground E (FIG. 3). After moving the trailer (T) to extract from the body 12, the gantry cylinder 44 is operated to rotate the gantry 38 upwards to fix it in a nearly vertical state by a vehicle or other trailer (T ') Mount the moved boom nose 22 to the lower boom 18 (Fig. 4). The mounting of the boom nose 22 is performed by assembling the adapter 22b to the main body 22a in a vehicle moving the boom nose, and then adjusting the transport vehicle in such an assembled state to move the adapter 22b to the lower boom 18. ) Is preferable.

Thereafter, the lower end boom 18 is rotated upward while the bridle 32 having the end of the pendant rope 30 fixed thereto is fixed to the boom nose 22 to provide the hook 27 provided at the end of the hoist rope 26. After the track 10 is lifted using the track 11, the track 10 on one side is assembled to the vehicle body 12, as shown in Figs. At this time, the lowering force of the initial boom is given by the boom spring 50 provided in the lower portion of the boom support 24. In the same manner, as shown in FIG. 8, the other track 10 is assembled to the vehicle body 12. As shown in FIG. 9, the jack-up cylinder 52 is contracted to return to the original position of the vehicle body 12 and the track 10 is seated on the ground E. FIG.

With the track 10 seated on the ground E as described above, the vehicle body 12 remains in equilibrium, the boom nose 22 is dismantled from the lower boom 18 as shown in FIG. 10 and the hoist rope ( After winding 24, the boom nose 22 is separated with the main body 22a and the adapter, and the pendant rope 30 and the bridal 32 are fixed to the upper end of the lower boom 18 again.

Then, as shown in FIG. 11, the upper boom 20 is connected to the lower boom 18, and the boom nose 22 is mounted to the upper boom 20. At this time, the boom nose 22 can be seen that only its main body 22a is fixed to the upper boom 20. Then, as shown in FIG. 12, the pendant rope 30 connected to the bridal 32 is fixed to the main body 22a of the boom nose 22 again, and in this state, the boom support body (using the locker 54) Fix the length of 24).

Finally, as shown in FIGS. 13 and 14, the boom winch 46 after connecting the counter weight 16 carried by the trailer or the transport vehicle to the top of the gantry 38 using the connecting rod or the wire W. ), The counter weight 16 is lifted and placed at a predetermined position of the vehicle body. In more detail, since the length of the boom support 24 is fixed by the locker 54, when the boom winch 46 is rotated in the winding direction, the lower boom 18 stops after being raised to a certain height, and continuously the boom winch. By rotating the 46 and operating the gantry cylinder 44 at the same time, the counter waiter 16 is not only raised to a predetermined position but also moved to an appropriate position on the vehicle body 12. The counter weight 16 is exactly disposed at a predetermined position of the vehicle body 10. Accordingly, the crane is assembled in a basic state capable of basic lifting or unloading work.

Optionally, even after such basic assembly, the length of the boom assembly can be increased or decreased by an additional step as shown in FIGS. 15 to 17. That is, in order to increase the length of one intermediate boom, as shown in FIG. 15, the bridle 32 is released from the boom nose 22, and then fixed to the upper end of the lower boom 18, followed by the lower boom 18. The upper boom 20 and the middle boom 56 is connected therebetween as shown in FIG. 16 to extend the length of the boom assembly. In addition, if a longer length of the boom assembly is desired, another intermediate boom 58 is mounted as shown in FIG. 17 in the state shown in FIG. 16, and then the respective intermediate booms 56 and 58 are interconnected. This extends the length of the boom assembly as desired.

As such, when the pendant rope 30 is connected to the boom nose 22 in the desired state or in the final assembled state, as shown in FIG. 18, for example, the predetermined length desired by the operator in a state where the length of the boom is increased is increased. Work, that is, lifting or unloading of heavy materials.

On the other hand, the method of disassembling the crane again in the assembled state as described above can be done in the reverse order of the above-described assembly method as will be readily understood by those skilled in the art, which will be clearly explained mainly on the characteristics of the present invention. Is as follows.

First, as shown in FIG. 1 or FIG. 14, the worker in the state where the crane is fully assembled first, the boom in the state in which the counter weight 16 is connected to the upper portion of the gantry 38 using a connecting rod or a wire (W). The winch 46 is rotated to lift the counter waiter 16 to a predetermined range, and then the gantry cylinder 44 is operated to move to the rear of the vehicle body 12 to dismantle it. Here, the locker 54 should be fixed to the boom support 24 to fix the length of the boom support 24. Then, the boom nose 22 is disassembled from the upper end of the upper boom 20, and the bridle 32 is fixed to the upper end of the lower boom 18, and then the upper boom 20 is dismantled from the lower boom 18. In this manner, the boom nose 22 is mounted on the lower boom again in the state where the upper boom 20 is disassembled from the lower boom 18, and the jack up arm 52 is unfolded to lift the body 10 and the bridle 32. After connecting to the boom nose 22 again, using the hoist rope 26 and the hook 27, the track 10 installed on both sides of the vehicle body 12 in turn is dismantled. Finally, the crane 32 is disassembled by releasing the bridle 32 again from the boom nose 22 and fixing it to the lower boom and then dismantling the boom nose 22 from the lower boom 18.

According to the method of disassembling and assembling the crane according to the present invention as described in detail above, it can be easily and simply disassembled and assembled without the need of a separate shoring or a lower boom sheave is improved workability It works. In addition, there is an advantage that does not affect the safety of the operator by not using a separate auxiliary means directly.

While a preferred embodiment according to the present invention has been described above, it will be understood by those skilled in the art that various modifications and changes can be made without departing from the scope of the appended claims.

Claims (6)

Connecting a counter weight to an upper portion of the gantry and dismantling the counter waiter by operating a boom winch; Disassembling the boom nose from the top of the upper boom and fixing the bridle to the lower boom, then dismantling the upper boom from the lower boom; Mounting the boom nose to a lower boom, connecting a bridle to the boom nose, and supporting a jack-up arm on the ground to dismantle the tracks on both sides; And Disassembling the bridal from the boom nose and fixing to the lower boom, and disassembling the boom nose from the lower boom. The method of claim 1, wherein the boom nose comprises a main body detachably mounted to the upper boom and an adapter releasably mounted to the main body and for mounting the main body to the lower boom. The method of claim 1 wherein each track is disassembled and lifted by a hoist rope. The method of claim 1, wherein the counterweight disassembly step includes mounting a fixing piece on the boom support to fix the length of the boom support, and operating the gantry cylinder to operate the gantry with the boom support as the support. Making a step; 5. The method of claim 1 or 4, wherein the boom support is provided with a boom support spring to initially lower the boom assembly to disassemble the track. Unfolding and lowering the jack-up arm fixed to the vehicle body to fix it on the ground, and operate the gantry cylinder to rotate the gantry upwards, and then attach the boom nose to the lower boom, After fixing the end of the pendant rope to the boom nose and pivoting the lower boom upwards, the track is mounted on both sides of the vehicle body and the jack-up arm is retracted to seat the track on the ground, Releasing the boom nose from the bottom boom, winding the hoist rope and fixing the pendant rope and the bridle to the top of the bottom boom, connecting the top boom to the bottom boom and mounting the boom nose to the top boom, and After fixing the pendant rope connected to the bridle to the boom nose and fixing the length of the boom support with a locker, the counter weight is connected to the top of the gantry using a wire, and the boom winch is rotated to lift the counter weight and mount it on the vehicle body. Assembly method of crane consisting of steps.