JPS61178398A - Horizontal and derricking combination type crane - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial field of application: End #4 relates to a crane with a boom that can be used either horizontally or in an uphill position. be.

Background of the Invention: Various types of cranes have been developed and put into practical use for use in lifting and unloading materials and equipment at construction sites, etc., but generally there are two types: horizontal game cranes and hoisting boom cranes. There are different types of cranes, and each model is selected and used by the person working at the locksmith site. Both types have their own characteristics,
Horizontal boom cranes have the advantage of being able to move loads horizontally, so they can be transported over a relatively wide range, and can be retracted at a constant lifting height. In such cases, the mast must be erected higher than the structure to be constructed, so the cost increases due to the height of the mast, and there are some points where it is not suitable for use unless there is ample installation space (work space).

On the other hand, jig hoisting type cranes can lower and lower the jig (poom) to lower and lower the harvest, so the height of the mast can be lower than that of the horizontal boom type cranes to achieve the purpose. In general, the turning radius is small, so it can fully demonstrate its function even at sites with narrow installation space (work space), but on the other hand, the work area is naturally narrowed, and the lifting time is 1 to 17, and the lifting load is Be careful when handling as it moves vertically! ! : In addition, the jig must be raised and lowered each time the mast is added, which increases the construction time and makes climbing work inconvenient.

Since both the horizontal boom type and the undulating boom type have their own advantages and disadvantages, there are actually two types of cranes available, and it is best to select and use the most convenient model depending on the situation at the site of the collapse. become. Therefore, in some cases, the actual life of the crane is short, and there is a warehouse for empty pipes when not in use.
Maintenance costs for the military and other organizations also increase, resulting in large economic losses.

Purpose of the invention: The present invention has been made in view of the above-mentioned situation, and it is possible to arbitrarily select either the horizontal type or the undulating type depending on the conditions of the work site where the crane is used. But it can be used by switching and t! The aim is to provide what makes Noh possible.

Structure of the invention: The crane of the present invention has seven main frames whose front side is open at the upper center of the turning platform, which is attached to a frame body equipped with a climbing mechanism at the top of the mast. A boom support body is attached to the top of the main frame, and the boom support body is attached to the main frame via a U support shaft to maintain the boom horizontally when it is laid down, and to support it with undulation ability.
A trolley is attached to the bottom of the boom so that it can move freely between the collecting section and the tip, and the traversing of the trolley and the lowering of the hanging pulley with a hook hanging from the trolley are operated by a winch mounted on the turning platform. A pair of linear actuators for raising and lowering is used to connect the main frame with the pivot portion of the boom, both sides of the boom at the front position, and a buffer means is provided at the back of the main frame when the boom is raised. It is attached.

Further, in the present invention, a locking device for fixing the trolley is attached to the tip end of the zoom, and the zoom is used by raising and lowering it. The structure was such that the trolley was fixed to the station building.

In the present invention, the boom is tilted at an elevation angle of approximately 20° from horizontal.
By moving the leash horizontally, the mast segment can be suspended from the open side 07 of the main frame, creating a mast joint during climbing.

Furthermore, in the present invention, a stopper is provided at the top of the main frame that can limit the lower limit when the zoom is IKed in a water droplet shape, so that the linear actuator for uphill movement can be stopped, and if necessary, the main body can be locked using a lock pin. This made it possible to fix it.

Embodiment: Next, the crane of the present invention will be described in detail with reference to embodiment drawings.

Figure 1 shows the case where the zoom in the crane of the present invention is hidden in a horizontal state, and the climbing mechanism (3) of the well-known structure is provided on the upper part, and the external mast 12) is fitted into the device. However, this outer mast 12) is provided with a swivel [! 4
) is provided with a mast hanging hole at the upper part of the mast at a required radius from the center of rotation force 1, and the frame is constructed at a height such that one segment of the mast can be hung across this mast hanging hole. A main frame (5) is erected, and the lfl of this main frame (15) is kept open or constructed so that the horizontal members can be removed only during climbing operations to provide sufficient strength. It's Toshide. At the top of the main frame 16), a gragette (6) is protruded toward the rear end (it is preferable to provide two grates in parallel at an appropriate interval), and the gragette (6) can be used as required. The length of the boom fl (l is downward at the underside of its trunk (II)°).

In order to install the pin (7) by engaging it with the graget (6), it is installed at a ratio of approximately 5.5:1 (based on the position of the pivot pin (7)). (It is not limited to this) It is installed so that it can be distributed in the front and rear and can be raised and lowered from horizontal to appropriate angles of elevation.

The boom: 10) is a framed structure with guide rails (10) on both sides of the main member placed on the lower side in the horizontal state.
A trolley u4 is suspended from the pivot point to the front end, and a trolley u4 is suspended so that it can move freely along the guide rail, and is operated by the endless endless machine lJO installed on the trolley a → turntable (4). The hanging rope Ql that raises and lowers the hanging pulley block with a hook that hangs down via the pulley aJ aA provided on the trolley 1-t141 is connected to the upper device of the turning table 14). A known method is adopted in which the suspension rope is wound around the pulley block αη via a pulley provided at the upper part of the main frame (6), following almost the same course as the transverse element, and the end of the suspension rope is attached to the main frame (6). The frame 16) is connected to an overload detector m mounted on the top.

In this way, the main frame (6) of the zoom ring, i.e., the base section (■1), is fitted with appropriate support plates on both sides at a slightly forward position, and the base is fixed to the support plates. mainframe (16)
The attachment attached to the front upper part of the 100-wire ramming machine (in the example, a hydraulic sill (to), hereinafter referred to as the luffing drive sill) is attached to the base end and the end of the edging rod, respectively. The piston rod of this driving cylinder (to) is connected in a 0TvJ manner so that the boom sound is kept horizontal when the piston rod of this drive cylinder (to) is in its most retracted state, and when the piston rod is fully advanced, the boom I
The stroke is determined so that ll stands up the highest, and the driving cylinder (to) is zoomed +10
It is arranged on both sides of 1 so that it can be raised and lowered. Note that a counterweight (not shown) is attached to the rear end of the boom troll to assist the operation when the boom is raised and lowered. Also, the outside of the surface drive cylinder is operated by its control system so that it operates synchronously.

Further, on the rear side surface of the main 7 frame 16), as shown in FIG. 2, a buffer means is provided to set the limit when the zoom ill is raised to the maximum elevation angle, and to absorb the reaction force when the zoom ill is raised. For example, a combination of a hydraulic damper or coil spring, a supporting mechanism, and a backing plate is attached to the rear side of the main frame (6), and the backing plate is the main component of the boom. The supports, which are provided at positions corresponding to the hinges, are arranged so as to come into contact with the face plate.

In addition, a fixing device for trolley α4 is attached to the tip of the boom (1 millimeter) in a predetermined position in order to use the boom (1 miller) in a raised and lowered position.
A limit switch is attached to the most advanced position along the guide rail U3 where 41 is boom + tn N, and the trolley I can be fixed only when this switch is activated. By combining links such as formulas and link types with drive fIIJ mechanisms,
Those operated by electric power, hydraulic pressure, etc. are provided. In addition, on the trolley α4 side, the above-mentioned type of fixing device [equipped with a corresponding locking hole, clamp shaft, etc.] is used.

According to the crane of the present invention constructed as described above, it is possible to select whether to use the zoomer in a horizontal position or in an undulating position depending on the conditions of the work site where it is installed, and when it is used in a horizontal position. As shown in Fig. 1, by retracting the piston rod (29) of the drive cylinder (toward) as far as possible, the pivot pin (7.
) and a row of surface-driven cylinders to operate as a crane in the horizontal position, 1i! Have them do it. In this state, trolley 04 Kazoom 11 (guit rail 0 of 1)
Endless machine lJ along the turbidity! It can be moved horizontally by the operation of 9, and can be operated in the same way as a conventional horizontal boom type V-on.

Next, when using the zoom ring in an up and down position, the trolley 4 should be zoomed in at a horizontal or slightly elevated angle (
101 and activate the limit switch (not shown), and fix the trolley to the boom + Ice by assisting the trolley fixing device (when setting up the crane without operating the climbing mechanism) , the trolley may be secured to the boom end by actuating the locking device first). In this state, the control circuit is used to prevent #i Traversing Endless Vehicle from operating, and the drive cylinder m is activated to boom! 101,
It can be raised and lowered using the pivot pin (2) as a base point, and the working radius can be changed arbitrarily, and the hoisting machine can be used to operate the hanging rope, making it possible to use the same type of crane as the undulating crane in the United States. In this state, even if the boom ((2) is erected with the load suspended, the shock absorber is still attached to the back of the main frame (6), so the boom; C, which is pivoted at the bend, is also limited by the standing limit due to this buffering means, and absorbs the anti-child force on the rear side due to excessive lifting, and the boom troll is reversed. It is possible to prevent accidents such as buckling due to swing-off.

As the harvesting progresses, the lift height increases and it becomes necessary to perform climbing operations, so the boom 110) can be used with the trolley 041 in the range of about 20 degrees from horizontal to vertical. and move the mast segment opening 1 lifted from the required position to the front side of the main frame (6) as shown by the chain line (A) in Figure 1. Prior to this work, remove the side members etc. and open the front side. Move the trolley H to the inside of the main frame (6), as shown by the chain line (a) K, and hang and connect the mast segment tll so that it matches the center of the existing mast (+).
As is well known, the climbing mechanism (3) is operated to raise the key repeatedly until the required height is reached.When dismantling, the process can be performed in the reverse order.

In addition, near the pivot point connecting the boom and main frame,
For example, in the above embodiment, on the main claim (5) located at an appropriate distance from the connecting position of the balance pin (7) to the rudder force, the protrusion protruding from the lower surface of the boom; or something similar,
If the lock bin is installed with a safety means to keep the zoom stable by fixing the boom (101) only when it is used in a horizontal position, the drive cylinder (
It can be used as a horizontal zoom crane.

As for the fixing means for this boom, in addition to manual operation, an automatically operated locking device may be attached to the upper surface of the main frame and may be incorporated by remote control so that it can be operated only when necessary.

In addition to the above-mentioned example, regarding the structure of the connecting pivot between the boom and the main frame, the main frame is a Brayt, which has pins coaxially protruding from both sides of the boom core to support the bin. It may also be installed in the middle of the frame so that it can be raised and lowered. Furthermore, when it comes to cutting off the top of the boom during climbing, it is preferable to determine the limit of its use while the trolley is in a state where it can move sideways.

Effects of the invention: As described above, the crane of the present invention operates the drive sill (linear actuator) to advance and retreat the f'F and mJ rods (piston rods) according to the nesting situation, thereby zooming? There is a method that allows the horizontal Vc to be concealed and the radius of the area is large, so that cargo can be hung over the entire area, and a method that can be used in a relatively narrow field where the game is raised and lowered to make a lift.
Since it can be used selectively and one crane can be used as two types of cranes, it can be used effectively without being left idle, and the structure is simple and handling is not as complicated, making it economical. This can enhance the effect.

[Brief explanation of the drawing]

The drawings show an embodiment of the construction crane of the present invention, in which Fig. 1 shows a case where the game is in a state where the crane is in an up-and-down state, and Fig. 2 shows a case in which the crane is in a state where the zoom is undulating. FIG. C 凰1, am! St. +21, -Outer mast (3)...Climbing mechanism (4)...Swivel (5)...Main 7 frame (6)...
・Gura 1 Tsutto (7)... Income and expenditure pin Scream... Bu
- Mu (Ill... Key part of the boom tlJ...
Installation is on one side σ→... Trolley - 1351
−・・Traversing endless machine α・・・・Traversing rope
η...Hanging pulley block α Barrel...Hanging rope
Cap...Hoisting machine (5)...Support plate
Inside...Trunion (2)...Mounted on one side -・
・・Drive cylinder・・Piston rod (Sakuyo rod) −・・Buffer means

Claims (1)

[Claims] A main frame with an open front side is erected at the upper center of the turning table on a turning table attached to a frame body equipped with a climbing mechanism at the top of the mast, and a trolley rail is attached to the top of the main frame. A boom is pivotally supported at its main part, and the boom can be raised and lowered by a pair of linear actuators for hoisting between both sides and the main frame at an appropriate dimension forward position than the pivot part, and the actuating rod Trolleys with hanging pulleys with hooks that can be operated horizontally along the underside of the boom by a winch on a turning platform are used only when the boom is raised or lowered. 1. A crane for both horizontal and vertical lifting, characterized in that the boom is fixed by a locking device attached to the top end of the boom, and a buffer means for raising the boom is provided at a position behind the main frame.