JPH0747852B2 - Reader coupling device and basic reader for the device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of satisfying the vehicle inspection specifications relating to the vehicle weight of a traveling crane, and moreover, it is a basic vehicle
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leader connecting device and a basic reader for the device, which enables the telescopic boom to be easily attached and detached.

[0002]

2. Description of the Related Art As is well known, a pile for foundation work has been installed at the tip of a multi-stage telescopic boom (hereinafter, "boom") of a traveling type crane (hereinafter, "crane"). A suspension leader is provided to support and guide a body pulling operation and a hammer for driving a pile body into the ground.

Such a suspension reader has a basic reader which is directly pin-connected to a reader bracket provided at the tip of the boom, and a plurality of basic readers which are connected to the lower portion of the reader. It consists of a split reader.

When the above work is performed, the boot
This basic leader is supported by the connecting portion of the upper bracket by means of a connecting pin supported by the leader bracket at the end of the frame, and a split leader is provided at the lower part of the basic leader, and then the same structure as this. The divided readers are successively connected to a predetermined length by mechanical means such as bolts or pins.

Particularly, regarding the pin connection of the basic leader,
It is common practice to fit the connecting pin into the pin hole formed at the tip of the leader bracket provided on the boom, or to remove the connecting pin to connect the basic leader and then to remove it. In such a basic leader attachment / detachment method, it is troublesome to attach / detach and fix the connecting pin.

In order to solve the above problems,
Since a connecting device for a basic leader as shown in FIG. 8 which is a front view of a main part thereof has been developed, its details will be described below.
The upper frame of the basic reader 51, a so-called leader top 52, is provided with a cutout portion 53, the cutout portion 53 is fitted into the connecting pin 54, and then the disk is fitted onto the connecting pin 54 in advance. A bolt 57 is inserted into each of the bolt holes 56 formed in the plate-shaped plate 55, and the bolt 57 is attached to the leader top of the basic leader 51.
The basic leader 51 is connected to the boom by being screwed on a female screw threaded on a block 58 fixed to the inside of 52.

On the other hand, when moving to another construction site,
As shown in FIG. 9 of the traveling posture explanatory diagram of the crane in which the basic leader is mounted, the split leader (not shown) is removed and only the basic leader 51 is connected to the connecting pin 54. The basic leader 51 is held in a state that it is installed so as to be substantially parallel to the horizontally tilted boom 61, and the lower part of the basic reader 51 is attached and detached on the front part of the body 62 of the crane. It was running freely fixed.

As described above, the reason why only the basic leader 51 is moved while being connected is that the leader top 52 of the basic leader 51 is moved.
Since it takes a long time to connect the connecting pin 54 to the connecting pin 54 and to change the wire rope 63, it is necessary to reduce the time required for these works so that it is economically advantageous as much as possible. There is nothing else to do.

The plurality of divided readers removed from the basic reader 51 are loaded on a truck or the like (not shown) in a separated state, and are separated up to the next target construction site. They are transported and assembled and disassembled each time they are constructed at the next construction site.

[0010]

As is well known, since the traveling crane needs to travel on a public road, a vehicle inspection acquisition application has been made. Then, in order to travel in the posture as shown in FIG. 9, a crane remodeling application is made and a remodeled vehicle is newly inspected.

By the way, although the initial vehicle inspection is obtained by a manufacturer, the crane is generally remodeled by a dealer or the like. Therefore, the dealer etc.
However, in order to create a modification application document, various data such as the vehicle weight, dimensions, and overturning load of the crane are required to be measured, and a difficult application procedure may be required. However, in reality, most dealers cannot cope with this in terms of measuring equipment and skills.

Due to such circumstances, there are many cases in which the crane is run in a posture in which the basic reader is supported, knowing that the alteration is illegal. Of course,
In this case, in addition to violating the Road Transport Vehicle Act, as is well understood from FIG. 9, it is unavoidable to drive the vehicle with the basic leader 51 supported in front of the driver's seat 64. In addition to being dangerous for road traffic because the visibility of the driver is obstructed, the weight balance of the vehicle body deteriorates because the basic leader 51 is located in front of the vehicle body 62 of the traveling crane. There are also problems such as deterioration of riding comfort, such as the occurrence of a pitching phenomenon during traveling.

In spite of such a serious problem,
In order to connect the basic leader 51 with the connecting pin 54, the leader top should not interfere with the crane work.
The disk-shaped plates fixed to both inner sides of 52 are released by removing the bolts, the notches are engaged with the connecting pins 54, and then the basic plates are again inserted through the plates. Lee
The removed bolts must be screwed onto each of the female threads of the block inside the leader top 52 of the da 51.

Therefore, it takes a long time to attach / detach the basic leader 51, and the wire rope 63 needs to be reattached as the basic leader 51 is attached / detached. Leader
Since there is a problem in work efficiency that it takes a long time to attach / detach the 51, the crane is often run in the above running posture.

In view of the above situation, as reported in, for example, “Construction Foundation”, which is an industry paper, the Ministry of Transport has issued a movement to eliminate illicit modification with an emphasis on safety, and the above-mentioned running posture -Because of the measures to strengthen the control of the crane, it was not possible to run the crane in the above-mentioned posture with an emphasis on work efficiency, and drastic improvement measures from the user to the manufacturer of the crane. Has come to be required.

Therefore, according to the present invention, the field of view is not obstructed when the crane is running, and the basic connecting device can be easily attached and detached. The purpose is to provide the basic reader of.

[0017]

In order to solve the above-mentioned problems, the main means adopted by the reader connecting device according to the first aspect of the present invention is a reel at the tip of the boom of the crane. A stopper is attached to the rear bracket, and two plates, each of which has an engaging portion and a locking portion on opposite sides, are provided on the connecting pin supported on the tip end side of the reader bracket. Between the plates, a flexible link mechanism for movably supporting them in the longitudinal direction of the connecting pin is provided, and a notch portion for engaging the connecting pin is provided, and the opposite sides are provided. Is provided with a locking portion or an engaging portion that engages with either one of the engaging portion and the locking portion provided on the both plates, and the notch portion is located at the corresponding position of the connecting pin. At the one end side, a contact portion that contacts the stopper when
In addition to a hook member for hooking a connecting tool provided at the tip of the wire rope wound around the lowering drum, a reader connecting portion for connecting the basic reader is provided on the other end side. It is characterized in that the cutout portion of the connecting fitting is engaged with the connecting pin.

Further, the invention according to claim 2 of the present invention is defined by claim 1.
The main means adopted by the basic leader for the described leader coupling device is a cylinder having a divided leader coupling portion at one end on a leader top in which a plurality of sets of sheaves are installed. before cut basic reader other end of the body is formed by fixed - the counter-sticking side of Datoppu cylindrical body provided with a connecting portion to the connecting fitting, wherein the plurality of sheet - each of the probe sets, shea - Bed sets A flexible rope having a connecting piece of a size that can be obtained according to the groove of the sheave is provided around the tip of the sheave, and the connecting piece of these ropes is connected to the connecting metal fitting side. Characterized by being pulled out.

[0019]

According to the reader connecting device of the first aspect of the present invention, when the connecting fitting is connected to the connecting pin provided on the reader bracket, the connecting pin is operated by operating the flexible link mechanism. When the two plates fitted over the plate are moved in opposite directions, the engaging parts or the engaging parts of these plates are separated from the engaging parts or the engaging parts provided on the connecting fittings, and the lock is released. , The notch comes off from the connecting pin of the leader bracket. Then, the connecting fitting can be connected to the connecting pin by the reverse operation.

Next, according to a basic leader for a leader connecting device of a second aspect of the present invention, the detached connecting fitting is connected to a connecting portion on one end side of the basic leader, The wire rope can be connected to the base rope by connecting the joint of the rope to the joint provided on the flexible rope and retracting the rope to the other end side of the base leader. It is pulled to the other end of the dough and hung around a plurality of sheaves. If the wire rope is wound by connecting the connected tool to the wire rope connecting tool after removing the basic leader, the flexible rope becomes a plurality of sheaves of the basic leader. It is hung around.

Next, when the wire rope is wound up, the basic leader rises together with the connecting fitting, and when the notch of the connecting fitting rises up to the corresponding position of the connecting pin, the abutting portion of the notch is the leader bracket. Since it comes into contact with the stopper provided on the above, the lifting of the connecting metal fitting is stopped.

At this stop position, if the boom of the crane is raised and lowered in a direction in which the connecting fitting swings toward the connecting pin, the notch of the connecting fitting engages with the connecting pin. When the boom raising and lowering operation is stopped and the link mechanism is operated to move the two plates in opposite directions, the connecting metal fitting is connected to the connecting pin of the leader bracket.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention is shown in FIG. 1 which is a front view of a partially cutaway essential part of a leader connecting device, FIG. 3 of an arrow view, FIG. 4 of an explanatory view of the essential configuration of the basic reader, FIG. 5 of an explanatory view of the basic reader connection state, FIG. 6 of an arrow view of FIG. This will be described below with reference to FIG.

That is, reference numeral 1 shown in FIG. 7 is a boom which is supported by an upper revolving structure 3 so as to be able to rise and fall.
A top sheave 6 having a wire rope 7 mounted thereon is supported on a sheave bracket 1a at the tip of the frame 1, and the sheave bracket 1a further supports the front portion of the vehicle body 2, that is, the present embodiment. A pair of plate-shaped leader brackets 4 that project downward with a slight inclination toward the left side are provided, and a connecting pin 5 having a horizontal axis is supported at the tip thereof.

As shown in FIG. 5, a guide plate 4b is provided on the outer surface of the lower portion thereof, the opening of which gradually expands downward, and above the supporting position of the connecting pin 5. In addition, a stopper plate 4a is provided between the opposing surfaces of the pair of reader brackets 4.

Next, as shown in FIGS. 1 to 3, in the reader connecting device, two disk-shaped lock plates 8 are fitted on the connecting pins 5 and these lock plates 8 are mounted. A convex portion 8a is provided on the surface of the opposite sides of the convex portion 8a.
Female screws for three are engraved at the position away from.
Then, a hexagon socket head cap screw b is screwed onto the female screw, whereby a block 9 having a concave curved surface whose end corresponds to the outer shape of the connecting pin 5 is fixed.

Further, a connecting fitting 10 having a structure described later is connected to the connecting pin 5. As shown in FIGS. 1, 2, 3 and 5 , the details of the connecting metal fitting 10 are a pair of a pair of abutting portions 11a having a frame shape and having an upper end portion with which the stopper plate 4a can abut. A notch 12 is provided on each one end of the plate, and the notch 12 is provided on the opposite side.
A lock block 13 having a notch 14 having a shape corresponding to that of the projection 8a and having an end face 13a with which one surface of the projection 8a can abut, and a hooking member for hooking a hook 7a provided at the tip of the wire rope 7. A hook hanging rod 15 is installed between a pair of plates, and a three-wheel guide sheave 16 on which the wire rope 7 is hooked is supported by a supporting shaft which is also installed.

The cutout 12 is located at the position where the contact portion 11a contacts the stopper plate 4a.
Is provided at a position facing the connecting pin 5. That is, the notch 12 of the connecting fitting 10 is hooked on the connecting pin 5, and the protruding portion 8a of the lock plate 8 contacts the end surface 13a of the lock block 13 so that the connecting fitting 10 is disengaged from the connecting pin 5. Is configured to be prevented.

Further, a link mechanism 20, which will be described later, is installed between the surfaces of the lock plate 8 corresponding to the position where the female screw of the lock plate 8 is engraved and facing each other. The details of the link mechanism 20 are as follows. A pair of brackets 21 are fixed to each of the opposite surfaces of the lock plate 8, and each of the brackets 21 has two pin holes h ₁ on the tip side. h ₂ ,
Links 22 and 23 formed by boring h ₃ and h ₄ are connected by a pin 24. As shown in FIG. 1, the links 22 and 23 are arranged so that the left side link 22 is on the lower side and the right side link 23 is on the upper side.

The link 22 on the left side is formed in a straight shape, and the link 23 on the right side is formed in a shape bent upward at the tip end side with respect to the position of the pin 24. The reason for bending the tip end side in this way is to facilitate the bending and stretching operation of the link mechanism 20.

Further, in the straight state of both links 22, 23 as shown by the solid line in FIG. 2, the pin holes h ₁ , h ₂ ,
h _3, a link pin 25 to h _4, while being maintained by engaging the detachable fixing pins 26, anti inner Rokkuburokku 13 of the convex portion 8a is connected fitting 10 as described above It is configured to come into contact with the end surface 13a on the opening side. For fixing the fixing pin 26, a hair pin 26a is used to facilitate the attachment and detachment of this pin, and a spring pin is used for the link pin 25 and the like.

Next, the structure of the basic leader 30 will be described with reference to FIG. 4. Reference numeral 32 is a horizontally long box-type leader top, and the connecting fitting 10 is provided on the top of the leader top 32.
Pair of connection brackets with pin holes for pin connection
31 is provided, and a plurality of sheave groups 33 are internally provided on the leader top 32.

Each of the sheave groups 33 has a flexible rope provided with a metal fitting 35 to which a hook 7a provided at one end of the wire rope 7 can be hooked. As a result, the non-metal rope 34 is wound around. Of course, the non-metallic rope 34 may be replaced with a wire rope that is thinner and more flexible than the wire rope 7.

As can be understood from the above description, the structure of the basic leader 30 is composed of a non-metallic rope connected to the connecting member 10 and the sheave set 33. Except for 34, the configuration is exactly the same as the conventional one.

The method of connecting the connecting member 10 to the basic leader 30 and connecting the basic leader 30 to the connecting pin 5 via the connecting member 10 will be described below. First, the link of the leader connecting device will be described. The bending work of the links 22 and 23 of the mechanism 20 is performed.

That is, by pulling out the fixing pin 26, both links 22,
When a downward force in FIG. 2 is applied to the bent portion of 23, both links 22 and 23 swing around the pin 24 as a swing center, and are bent and moved to the position shown by the imaginary line.

Then, the lock plates 8 are guided by the connecting pins 5 and move in the directions in which they approach each other, and a gap is created between the lock plates 8 and the inner side surface of the leader bracket 4, so that the connecting pins 5 are separated from each other. The notch 12 of the connecting fitting 10 is disengaged, and the wire rope 7 is pulled out by the hook 7a hooked on the hook hook 15.

Next, the connecting bracket 10 is connected to the pair of connecting brackets 31 of the basic leader 30 by means of the basic leader connecting pins 31a.
If the hook 7a is hooked on the metal fitting 35 provided on the non-metallic rope 34 and the other end of the non-metallic rope 34 is pulled out, the wire rope 7 is pulled through the hook 7a. Is drawn into the leader top 32, and the wire rope 7 is hung around the sheaves of the respective sheave groups 33.

Therefore, the work of winding the wire rope 7 around the sheave set 33 can be carried out very easily and quickly, and the wire rope for the sheave of the basic leader 30 which has been a matter of concern in the past. Thus, the troublesome work of replacing the work 7 is eliminated.

Then, the outrigger 2a of the vehicle body 2 is extended to raise the boom 1 while loosening the wire rope 7, while the wire rope 7 is wound up so that the angle formed with the horizontal is about 15 degrees. After gradually lowering the boom 1 until it reaches the limit, the wire rope 7 is further wound and the basic leader 30 is raised through the connecting metal fitting 10.

As the basic leader 30 is raised, the connecting fitting 10
When the abutting portion 11a of the wire abuts on the stopper plate 4a, the winding of the wire rope 7 is stopped and the boom 1 is gradually tilted. Then, at this abutting position, the opening of the notch 12 of the connecting fitting 10 is opposed to the position of the connecting pin 5 supported by the reader bracket 4, and the reader bracket 4 is inclined. Therefore, since the lead bracket 4 approaches the vertical state by reducing the elevation angle of the boom 1, the connecting pin 5 passes through the opening of the notch 12 and the notch 12 is provided between the gaps. Engage with and get caught.

Next, the fixing work for preventing the connecting metal fitting 10 from coming off is performed by the above-mentioned link mechanism 20 as follows. That is, the links 22 and 23 in the bent state
When the fixing pin 26 is fitted into the pin holes h ₂ and h ₃ for fitting of the fixing pin 26 by applying a force in the direction opposite to the above to the straight state, the locking plate 8 and the connecting metal fitting 10 are connected. Since the opposite surfaces of the block 13 come into contact with each other, and the convex portion 8a comes into contact with the end surface 13a of the block 13 of the connecting fitting 10, the connecting fitting remains as it is.
10 continues to be maintained without coming off the connecting pin 5.

The connecting state of the basic leader 30 to the connecting pin 5 is shown in FIGS. 5 and 6, and in this state, the connecting fitting 10 and the basic leader 30 are integrated. In other words, as can be seen from the above figure, the connecting bracket 10 is
By connecting to the feeder 30, a basic reader equivalent to the conventional one is constructed.

By the way, if various operations are performed in the reverse order of the above, the basic leader 30 can be easily connected from the connecting pin 5 to the connecting fitting.
It will be readily understood that 10 can be removed from the basic leader 30 and that only the fitting 10 can be connected to the connecting pin 5.

Therefore, in the traveling posture of the crane,
As shown in FIG. 7, since the boom 1 is not equipped with the basic leader 30, the field of view in front of the driver's cab 3a is not obstructed at all when the vehicle is running, and the connecting fitting 10 is attached to the hook hanging bar 15. As the hook hook 7a is hooked to prevent its swinging, it is possible to drive extremely safely.

Moreover, since the weight of the connecting metal fitting 10 can be made approximately the same as that of a hook (not shown) for lifting work, this deviates from the vehicle weight according to the vehicle inspection specification of the crane in the standard equipment state. Since there is no need to modify the crane, there is no need to modify the crane, and there will be no imbalance in the wheel loads of the front and rear wheels of the crane.

Although the case where the connecting fitting 10 is attached to and detached from the basic leader 30 has been described above, the connecting fitting 10 is previously attached to the basic leader 30.
30 or by connecting the top of the basic leader with a cutout portion equivalent to that of the coupling metal fitting 10 and loading the basic leader on, for example, a truck or the like. By operating the rear outrigger 2a to lower the tip of the boom 1, the connecting pin 5 can be engaged with the notch.

However, since a delicate positioning operation is required, it is technically possible, but not only can it not contribute to the reduction of the work time for mounting the basic reader,
It is not always a good method because it involves some danger.

The above-mentioned embodiments are merely specific examples of the present invention. Therefore, the scope of the technical idea of the present invention is not limited by these embodiments, and does not deviate from the technical idea. Design changes within the range are free.

[0050]

As described in detail above, according to the leader connecting device of the first aspect, when the connecting fitting is connected to the connecting pin provided on the leader bracket, the link mechanism is flexible. The connecting metal fittings can be attached to and detached from the connecting pins by operating the, and according to the basic leader for the reader connecting device of the second aspect, the removed connecting metal fittings are connected to one end side of the basic leader. If the wire rope connecting tool is connected to the connected tool attached to the flexible rope, and the rope is retracted to the other end side of the basic leader, the wire rope is connected. The puller is pulled to the other end of the basic leader and hung around a plurality of sheaves.

When the wire rope is wound up, the basic leader rises together with the connecting fitting, and when the cutout portion of the connecting fitting rises up to the corresponding position of the connecting pin, the abutting portion of the notch becomes the leader. Since the connecting metal fitting stops contacting the stopper provided on the bracket and the notch of the connecting metal fitting engages with the connecting pin at this stop position, the basic leader is connected to the connecting pin via the connecting metal fitting. Will be done.

Therefore, the basic reader can be attached and detached very easily and quickly, so that it is not necessary to run the vehicle with the basic reader attached as in the conventional case, and a connecting bracket is connected to the boom of the crane. As a result, the visibility of the driver's seat of the crane will not be obstructed, and as a result, an extremely great effect can be expected for improving the safety on road driving and improving the efficiency of basic reader attachment / detachment. be able to.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a leader connecting device according to an embodiment.

FIG. 2 is a plan view of a main portion of the leader connecting device according to the embodiment.

FIG. 3 is a view on arrow A in FIG.

FIG. 4 is an explanatory diagram of a main part configuration of a basic reader according to an embodiment.

FIG. 5 is an explanatory diagram of a connected state of the basic reader according to the embodiment.

FIG. 6 is a view on arrow B of FIG.

FIG. 7 is a diagram illustrating the traveling posture of the crane.

FIG. 8 is an explanatory view of a connected state of essential parts of a basic reader according to a conventional example.

FIG. 9 is a diagram illustrating a traveling posture of a crane according to a conventional example.

[Explanation of symbols]

1 ... Boom, 1a ... Sheave bracket, 2 ... Body body, 2a
… Outriggers, 3… Upper revolving structure, 3a… Cab, 4… Re-
Double bracket, 4a ... Stopper plate, 4b ... Guide plate, 5 ... Connecting pin, 6 ... Top sheave, 7 ... Wire rope, 7a ... Hook hook, 8 ... Lock plate, 8a ... Convex portion,
9 ... Block, 10 ... Connecting metal fitting, 11 ... Plate, 11a ... Abutting portion on stopper plate, 12 ... Plate notch, 13
… Rock block, 13a… End of lock block, 14…
Notch part of lock block, 15 ... Hook hook bar, 16 ... Guide sheave, 20 ... Link mechanism, 22 ... Link, 23 ... Link, 24
… Pin, 25… Link pin, 26… Fixed pin, 30… Basic reel
Da, 31 ... Connection bracket, 31a ... Basic leader connection pin,
32 ... Leader top, 33 ... Sheave set, 34 ... Non-metal roll
35, metal fittings to be connected.

Claims (2)

[Claims] 1. A stopper is attached to a leader bracket of a telescopic boom of a traveling type crane, and an engaging portion is provided on a side opposite to a connecting pin supported by the tip side of the leader bracket. A flexible link mechanism for externally fitting two plates provided with either one of the locking parts and the locking parts, and movably supporting them between the two plates in the longitudinal direction of the connecting pin. Along with the provision of a notch that engages with the connecting pin,
An engaging portion or an engaging portion that engages with one of the engaging portion and the engaging portion provided on the both plates is provided on opposite sides, and a notch is provided at a corresponding position of the connecting pin. A wire roller formed by winding a winding / winding drum with an abutting portion on one end side that abuts the stopper when the portion is positioned.
In addition to providing a hooking member for hooking the connecting tool provided at the tip of the connector, the notch of the connecting metal fitting having the reader connecting portion for connecting the basic reader on the other end side is engaged with the connecting pin. A reader connecting device characterized by being combined. 2. A plurality of sets of sheet - the Datoppu, divided into one end Li - - Bed set is internally provided been re previous basic reader other end is formed by fixed cylindrical body provided with a dust connecting unit Kiri - the counter-sticking side of Datoppu cylindrical body provided with a connecting portion to the connecting fitting, wherein the multiple <br/> number of sheet - each of the probe sets, shea - Bed sets of sheet - size may pass into the groove of the probe b has a the flexibility provided at the tip of the connecting device - claims, characterized by comprising a drawer on the connecting portion side of the connecting fitting to be connecting device flop - with reeved the flop, these b 1. A basic reader for the reader connecting device according to 1 .