JPH0450306Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field: The present invention relates to a lifting device for a climbing crane.

Prior Art: Many climbing methods have already been proposed for adding posts to construction cranes. The mainstream is one that is operated using a hydraulic cylinder.
Many climbing devices of this type have been proposed. To give an example, JP-A-49-
No. 82052, JP-A-49-126065, JP-A-55-11401
No. 17118, Special Publication No. 17118, or Actual Publication No. 17118-
There are publications such as Publication No. 4718.

Further, recently, cylindrical bodies are often used as posts for cranes. In the case of this so-called round post, in order to absorb the support reaction force, the climbing frame or outer frame and the upright post (inner post) are removably inserted into the locking hole provided by the fixing pin in the post. As a matter of necessity, a large number of locking holes are provided, which causes disadvantages.

Furthermore, the support frame (outer frame) on which the crane part is mounted for lifting and lowering operations and the lower lifting frame for taking reaction force are separated, and a hydraulic cylinder for climbing is placed astride between both frames. Each frame is provided with a guide mechanism and a locking mechanism for the post.

Problems to be Solved: Since the climbing device of the conventional climbing crane has the above-mentioned configuration, there are various problems associated with its use.

That is, since the support frame and the lower elevating frame of the crane part are separated, a guide mechanism such as a guide roller must be provided so that each can move smoothly along the post. In addition, the structure becomes complicated due to the separation structure. Furthermore, the frame becomes separated vertically during climbing operations, which increases the risk.

In addition, since it is necessary to drill a locking pin hole for climbing on the round post, the cross-sectional strength at the hole part decreases, and this needs to be reinforced, but the pipe that forms the post is relatively Since the diameter is small, welding on the inner surface becomes problematic, requiring a lot of processing time, and increasing construction costs. Furthermore, since the locking pin hole and the guide rail of the support frame and the lower elevating frame are attached and processed separately, the processing is time-consuming.

As described above, there are many problems that need to be solved with conventional climbing cranes.

Means for solving the problem: The present invention solves the above-mentioned problems, and
It is an object of the present invention to provide a lifting device for climbing that is more rational, more convenient to handle, more secure, and more economical than conventional devices.

That is, the present invention provides a lifting device for a climbing crane in which a hydraulic cylinder is used to raise and lower the crane part, and the crane post has a main guide rail at one location on its circumferential surface along the axial direction. However, one or more sub-guide rails are attached in parallel to each other at positions displaced in the circumferential direction by at least 90 degrees from the main guide rail position, and the main guide rail has a plurality of parallel rails. Rail members are positioned at required intervals, and locking pieces are fixed at predetermined intervals between these rail members.
It consists of a cylindrical body, and its upper and lower ends are equipped with guide rollers that come into contact with the main guide rail and the sub-guide rail of the post, and a hydraulic cylinder for climbing is arranged at the outer position facing the main guide rail. A slider is connected to the piston rod end of the hydraulic cylinder and is movable by one stroke along a guide rail provided along the frame. The structure is such that locking pins that engage with the locking pieces of the structure and receive support reaction forces are removably disposed.

The locking piece attached to the post side in the present invention is located between two parallel guide rails of the main guide rail.
They are fixed in the axial direction at intervals corresponding to one stroke of the hydraulic cylinder, and the locking pins are engaged with and supported by the upper surface of the locking piece arranged between the main guide rails. Regarding the relationship between the locking piece and the locking pin, a pin insertion hole may be provided on one side of the locking side.

In the present invention, the guide roller on the support frame side with respect to the main guide rail is firmly supported by brackets reinforced at both the upper and lower ends of the support frame, and has a flange that allows it to roll against the rail surface of the main guide rail. It has a attached structure.

In addition, each guide roller that comes into contact with the sub-guide rail is configured so that the contact state between the rail and the roller can be adjusted in its support bracket, so that it can be lifted and lowered while the axes of the support frame and the post are approximately aligned. It has been done.

In addition, in the attachment part of the climbing hydraulic cylinder of the support frame, a locking pin that protrudes inward within the movement range of the slider connected to the piston rod end maintains engagement with the locking piece so that climbing operations can be performed. , a long hole is provided.

According to the spirit of the present invention, if necessary, even if the structure is a combination of a post (tower) with a frame structure and a crane support frame with a frame structure fitted onto the post, it can be adopted. .

Embodiment: The elevating device of the climbing crane of the present invention will be explained below based on the drawings of one embodiment.

Figure 1 shows a jib-type crane equipped with a lifting device for climbing according to the present invention, in which numeral 1 is a post, which is erected at the required height by adding segments formed from pipes of a predetermined length. . Reference numeral 2 denotes a crane section, which includes a turning table 3 equipped with a turning mechanism, a jib support frame 4 erected on the turning table 3, and a jib 5.
and a jib hoisting winch 6 mounted on the turning table 3,
It consists of a winch 7 for hoisting 8 ropes.

Reference numeral 20 denotes a crane section support frame, on which the crane section is mounted via a swing ring 3' at its upper end, and is fitted onto the post 1 so that it can be moved up and down.

As shown in FIGS. 2 to 5, the posts 1 are formed of pipes of a required diameter, and are successively joined by flange joints 11. On the outer periphery, a main guide rail 12 and two sub-guide rails 15, 15 are fixedly installed over the entire length in positions parallel to each other along the axis at three equal parts. The sub-guide rails 15, 15 are made of angle iron (not limited to this) and are attached with their ridgeline portions protruding. The main guide rail 12 has two guide members 12', 12' arranged in parallel at a predetermined interval, and a locking piece 13 is attached to both the guide members 12', 12' for a climbing hydraulic cylinder 21, which will be described later. A large number of them are fixed horizontally with the distribution of one stroke. Note that this locking piece 13 has a U-shaped cross section, and its upper width is slightly narrower.

As shown in FIGS. 6 to 8, the crane support frame 20 is made of a single cylindrical body, and is provided with flanges that also serve as reinforcement at the upper and lower ends.
On the outside, along the axial direction, a climbing hydraulic cylinder 21 has its end attachment piece 22 attached to a pin 2 on a bracket 23 provided on the upper part of the support frame.
2' connected and installed, piston rod 2
It is suspended with 1' facing downward. The tip of the piston rod 21' of this hydraulic cylinder 21 is connected with a pin 25' to a slider 25 that is slidable along guide rails 24, 24 fixed in parallel at a required interval to the lower half of the support frame 20. , are connected vertically so that they can expand and contract. This slider 25 has a support block 26 for a locking pin 27, and the locking pin 27 is inserted and supported into a pin hole 26' of this support block to lock in a direction perpendicular to the axis of the support frame 20. A pin 27 is provided so that it can be inserted and removed. Further, a support block 28 is provided above the upper support bracket 23 of the hydraulic cylinder 21, and is provided with a hole 28' that is fixed to the support frame 20 and supports the locking pin 29 in an axially removable manner. be. Both upper and lower locking pins 2 like this
7, 29 and the hydraulic cylinder 21 so that their axes are located on the same longitudinal section, and the main shafts on the post 1 side are placed at both upper and lower end positions of the hydraulic cylinder 21 and the locking pins 27, 29. Guide rail 1
Guide rollers 30, 30 are disposed so as to roll in contact with the two guide members 12', 12'. Incidentally, window holes 32, 32 and a long hole 33 are provided in the support frame 20 at the positions of the guide rollers 30, 30 and in the movement section of the locking pin insertion portion attached to the slider 25. The guide rail 24 and bracket 23 are appropriately reinforced to ensure stability.

In addition to arranging the main guide rail 12 of the post 1 at a position facing the climbing mechanism, the upper and lower ends of the support frame 20 at the position facing the sub-guide rail 15 are provided as shown in FIG. As shown in the example, guide rollers 35 and 3 are in contact with the sub-guide rail 15 in such a way that the contact state can be adjusted from the outside using a well-known means (for example, a screw mechanism).
5 are rotatably arranged by support brackets 34, respectively. The contact conditions of the guide roller 35 are adjusted so that the support frame 20 is concentric with the axis of the post 1, so that it can move smoothly when going up and down. Reference numeral 36 indicates an upper landing, and 37 indicates a lower landing, which are work floors on which the operator engages and disengages the locking pins 27 and 29, and are connected by a ramp. Note that the distal ends of the locking pins 27 and 29 are partially cut to provide a flat surface so that the engagement surface with the locking piece 13 is stable.

With this configuration, the crane section 2
When climbing, operate the hydraulic cylinder 21 on one of the locking pieces 13 on the main guide rail 12 of the post 1 to attach the locking pin 2 on the movable side.
7 and acting on the locking pin 29 on the fixed support side and its support frame 20
The load on the locking pins 27 and 29 is removed, and the locking pins 29 are moved back (normally, the locking pins 27, 29 are manually removed by an operator).
advances and retreats. Of course, in the case of a remote control type,
The required locking pin is moved forward and backward using a hydraulic cylinder or the like. ), apply the full load to the locking pin 27 on the movable side. After that, if the piston rod 21' of the hydraulic cylinder 21 is pushed out, the crane part support frame 20 will be moved to the main guide rail 12 of the post 1.
is raised along the post 1 by the guide roller 30 and the guide rollers 35, 35 which are in contact with the sub-guide rails 15, 15, respectively.

When the climbing hydraulic cylinder 21 rises by one stroke, the locking pin 29 on the fixed side is pushed in and engages with the upper surface of the locking piece 13 on the post 1 side, and a load is applied to this locking pin 29, and the locking pin 29 on the movable side is pushed in. The locking pin 27 is lifted slightly by operating the hydraulic cylinder 21 to remove the load, and this pin 27 is retreated.
Pull up one stroke without contacting the locking piece 13. If the locking pin 27 on the movable side is moved forward again and the locking pin 27 is engaged with the locking piece 13 above the previous position, it will act on the upper locking pin 29 in the opposite direction. In order to remove the load, the piston rod 21' of the hydraulic cylinder 21 is pushed out a little, and the locking pin 29 is moved back so that it does not come into contact with the locking piece 13.

Thereafter, the crane part support frame 20 is raised by repeating the procedure described above.

During such a rise, the hydraulic cylinder 21
Attach the base end to the bracket 2 via the attachment piece 22.
3, and the end of the piston rod 21' is connected to a slider 25, which is supported by guide rails 24, 24 so as not to protrude. Therefore, the thrust of the hydraulic cylinder 21 is transferred to the cylindrical crane support frame. The relationship between the locking pin 27 and the locking piece 13 attached to the post 1 side, which is engaged by the locking pin 27 which acts in parallel to the outer wall of the main guide 20 and which applies this thrust, is as follows. Guide rollers 30 arranged above and below the hydraulic cylinder 21 come into contact with the rail members 12', 12' of the rail 12, and the main guide rail 1 is prevented from wobbling laterally.
2 as a reference, the sub guide roller 3 at the opposite position
5, 35 and the auxiliary guide rails 15, 15 assist in abutting guidance, and the climbing can be done without difficulty.

Note that the arrangement of the hydraulic cylinder, the slider, and each locking pin can be reversed if necessary. Regarding the guide structure of the slider and the rail members of the main guide rail of the post,
The format is not limited to the above, and other formats may be used.

Effects of the invention: According to the invention, the crane part support mechanism for climbing operations is made into a single cylindrical frame, which simplifies the structure, facilitates work operations, and increases safety. Since no unreasonable external force is applied to the hydraulic cylinder, reliable thrust can be exerted.

In addition, without making the post-side locking part a hole-drilling structure, the guide part and the locking part are combined and locked at the lifting guide reference position, making the main parts compact and improving machining accuracy and ease of processing. This made it possible to improve overall economic efficiency.

In addition, by reducing the crane support frame to one and adding a climbing mechanism to it,
It has the advantage of being convenient for storage and transportation, as it can be handled without being divided.

Furthermore, the lifting device of the present invention can be employed in various construction cranes.

[Brief explanation of the drawing]

Fig. 1 is an overall view of one embodiment of a crane equipped with the device of the present invention, Fig. 2 is a view showing the post, Fig. 3 is a - perspective view of Fig. 2, and Fig. 4 is a view of the attachment attached to the main guide rail. 5 is a view from the right side of FIG. 4, FIG. 6 is a front view of the crane support frame, FIG. 7 is a cross-sectional view of the part shown in FIG. 6, and FIG. 6 is a sectional view taken along the - line in FIG. 6, and FIG. 9 is a diagram showing a climbing mode. 1...Post, 2...Crane part, 3...Swivel board, 3'...Swivel ring, 11...Joint flange, 1
2... Main guide rail, 12'... Guide rail member, 13... Locking piece, 15... Sub-guide rail, 20... Crane part support frame, 21...
Hydraulic cylinder for climbing, 21'...Piston rod, 22...Mounting piece, 23...Bracket, 24...Guide rail, 25...Slider, 26, 28...Support block, 27...Moving side locking pin , 29...Fixed side locking pin, 3
0, 35... Guide roller, 33... Long hole.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a lifting device for a climbing crane that uses a hydraulic cylinder to lift and lower the crane part: The crane post has a crane post located at one location on its circumferential surface.
A main guide rail is provided along the axial direction, and one or more sub guide rails are provided at positions displaced from the main guide rail position by at least 90° in the circumferential direction, and the main guide rails are parallel to each other. Locking pieces are fixed between a plurality of rail members at predetermined intervals in the longitudinal direction; The crane support frame that is fitted onto the post is made of one cylindrical body, and has locking pieces at both upper and lower ends of the frame.
The piston rod end of the hydraulic cylinder for climbing is provided with guide rollers that are in contact with the main guide rail and the sub guide rail of the post so that the guide axes are aligned, and the piston rod end of the hydraulic cylinder for climbing is disposed on the outside facing the main guide rail. A slider disposed so as to be movable by one stroke along a guide rail provided along the support frame is connected to the support frame, and the slider and a position above the hydraulic cylinder are engaged with the main guide rail portion of the post. A lifting device for a climbing crane, characterized in that a locking pin that engages with a piece and supports a crane part support frame with respect to a post is arranged so as to be movable in each direction. 2 The piston rod end of the climbing hydraulic cylinder is connected with a pin to a slider that is movably engaged with two guide rails arranged on the outside of the crane support frame, and the locking pin on the movable side is connected to this slider. 2. The climbing crane elevating device according to claim 1, wherein said post is fitted and supported so as to be movable in and out toward the center of the post. 3 The main guide rail attached to the post consists of two guide rail members arranged in parallel at the required interval,
Locking pieces are fixed between the guide rail members at intervals equivalent to one operating stroke of the climbing hydraulic cylinder, and the center position is on a straight line connecting the centers of the climbing locking pins of the crane support frame. 2. The climbing crane lifting device according to claim 1, further comprising guide rollers that abut the main guide rail at the upper and lower ends of the support frame.