JPH10238263A - Elevating device for auger drive mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevating device with a frame can be simply attached to a guide rail. SOLUTION: A sheave block 42 by which a suspended sheave 20 is rotatably supported is removably coupled to a coupling link member 36 rotatably supported to a frame 10, by a fulcrum pin so as to be rotatable about the fulcrum pin. Further, an upper guide gib 14 is rotatably supported to the frame 10, and a coupling link member 36 is coupled to the upper guide gib 14 by means of an extendable link member 58 whose length can be adjusted by rotating a thread shaft 64 on which clockwise and counterclockwise threads are formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevating device for an auger drive mechanism for supporting a frame in which an auger drive mechanism is incorporated so as to be slidable in the longitudinal direction of a guide rail of a reader and elevating the frame via a suspension sheave. About.

[0002]

2. Description of the Related Art Conventionally, a frame incorporating an auger drive mechanism for rotating an auger screw is slidably engaged with a guide rail of a reader through a guide gib.
2. Description of the Related Art A construction machine that excavates by lowering a frame while rotating an auger screw is used.

In such a construction machine, Japanese Unexamined Patent Publication No. 7-20 has been proposed in order to facilitate mounting of a frame on a guide rail.
As disclosed in Japanese Patent Publication No. 8058, the frame is divided into a lower part and an upper part, and a guide gib is attached to each. And the upper frame rotatably supports the hanging sheave,
An auger drive mechanism is mounted on the lower frame.

[0004] First, the upper frame is suspended by two wires of a main wire and an auxiliary wire so that the groove of the guide gib is parallel to the guide rail, and the upper frame is engaged with the guide rail. Next, the lower frame is lifted by the auxiliary wire, and the upper frame and the lower frame are connected by a rotating pin. There is known a configuration in which the upper and lower frames are lifted by a main wire so that a guide gib of the lower frame is engaged with a guide rail.

[0005]

However, in such a conventional device, two sets of wires, a main wire and an auxiliary wire, are required to lift the upper frame and the lower frame, and the auxiliary wire is used for the upper frame. After lifting the lower frame, the lower frame is lifted, so that the auxiliary wire must be changed from the upper frame to the lower frame.

An object of the present invention is to provide an elevating and lowering device of an auger drive mechanism which allows a frame to be more easily mounted on a guide rail.

[0007]

In order to achieve the above object, the present invention takes the following means to solve the problem. That is, a frame incorporating an auger drive mechanism for rotating an auger screw is engaged with a guide rail of a leader via a guide gib to slidably support the guide rail in a longitudinal direction of the guide rail, and the suspension is provided via a suspension sheave. In a lifting device of an auger drive mechanism for lifting and lowering a frame, a sheave block in which the hanging sheave is rotatably supported is detachably attached to a connecting link member rotatably supported by the frame by a fulcrum pin, and It is connected rotatably around a pin, and also rotatably supports the upper guide gib on the frame, and further connects the connecting link member and the upper guide gib by a telescopic link member whose length can be adjusted. An elevating device for an auger drive mechanism, characterized in that:

The telescopic link member may be adjustable in length by rotation of a screw shaft formed with left and right screws, and may further include a rotation regulating pin insertable into the frame and the upper guide gib. It may be.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 4, reference numeral 1 denotes a self-propelled construction machine, and a leader 2 is supported by a stay 4 and a catching fork 6 so as to be able to be turned upside down. Two long guide rails 8 are laid on the front surface of the reader 2 along the longitudinal direction thereof, and have a circular cross section.
Has a pair of upper and lower guide gibs 12, 1
4 are engaged. An auger drive mechanism 16 is incorporated in the frame 10, and the auger drive mechanism 16
, An auger screw 18 is attached, and is configured to rotationally drive the auger screw 18.

The frame 10 is suspended by a wire 24 via a suspension sheave 20 or the like. One end of the wire 24 wound around the suspension sheave 20 is fixed to an upper end of the reader 2 and The other end is bridged between a pair of sheaves 26 and 27 rotatably supported on the upper end of the reader 2.

[0011] Then, it is wound around a winch rotating drum (not shown) provided inside the construction machine 1 via a sheave 28 rotatably supported in the middle of the leader 2 and a sheave 29 provided at the lower end of the leader 2. Then, the frame 10 can be moved up and down by driving the winch.

As shown in FIG. 5, a semicircular groove 3 corresponding to the outer peripheral shape of the guide rail 8 is formed in the upper guide give 14.
0, 32 are formed. The guide rails 8 are inserted into the grooves 30 and 32, and the guide rails 8 can be sandwiched from both sides by the upper guide gibs 14.

Similarly, a groove (not shown) is formed in the lower guide gib 12, and the guide rail 8 is inserted into this groove so that the guide rail 8 can be clamped from both sides. Are configured so as to be slidably supported in the longitudinal direction.

As shown in FIGS. 1 to 3, a connecting link member 36 is rotatably supported on the frame 10 via a first rotating shaft 34 orthogonal to the rotation center of the auger screw 18. Further, a through hole 40 is formed at one end of the connecting link member 36.

On the other hand, the hanging sheave 20 is a sheave block 4.
2 is rotatably supported via a support shaft 43, and the sheave block 42 is also formed with a through hole 44. A fulcrum pin 46 that can be inserted into the through hole 40 of the connecting link member 36 and the through hole 44 of the sheave block 42 is provided. The connecting link member 3 is inserted and pulled out of the fulcrum pin 46.
6 and the sheave block 42 are made detachable,
It is configured such that it can be rotatably connected around the fulcrum pin 46.

The upper guide gib 14 is rotatably supported by the frame 10 via a second rotating shaft 48 parallel to the first rotating shaft 34. As shown in FIG. 3, when the grooves 30 and 32 of the upper guide gib 14 are engaged with the guide rails 8, they can be inserted into the insertion hole 52 formed in the frame 10 and the insertion hole 54 formed in the upper guide gib 14. The rotation control pin 56 is provided.

One end of a telescopic link member 58 is rotatably connected to the upper guide gib 14 via a first fulcrum pin 60, and the other end of the telescopic link member 58 is connected via a second fulcrum pin 62. It is rotatably connected to the connection link member 36. The telescopic link member 58 includes a screw shaft 64, and a left screw 64a and a right screw 64b are formed at both ends of the screw shaft 64, respectively.

The right screw 64b is screwed into a first end member 66 rotatably supported by the first fulcrum pin 60,
The left screw 64a is screwed into a second end member 68 rotatably supported by the second fulcrum pin 62. The screw shaft 6
4 to adjust the length of the telescopic link member 58 so that the frame 10, the upper guide gib 14, the connecting link member 36, and the telescopic link member 58 form a parallel link, It is preferable to determine the positions of the second rotation shaft 48, the first fulcrum pin 60, and the second fulcrum pin 62.

Next, the operation of the elevating device of the auger drive mechanism according to the present embodiment will be described. First, as shown in FIG. 1, the frame 10 is placed horizontally on the ground with the upper and lower guide gibs 12, 14 down. The upper guide gib 14 is placed so that the grooves 30, 32 are oriented vertically and rotated by 90 degrees.

Then, the wire 24 is paid out by operating a winch (not shown), the sheave block 42 is lowered, the through hole 44 of the sheave block 42 and the through hole 40 of the connecting link member 36 are aligned, and the fulcrum pin 46 is moved. insert. Thereby, the sheave block 42 and the connection link member 36 are connected.

Subsequently, when the wire 24 is wound by operating the winch, first, the sheave block 42 around the fulcrum pin 46 and the connecting link member 36 rotate, and the second link between the frame 10 and the connecting link member 36 is formed. Rotation about one rotation axis 34 occurs. Further, when the wire 24 is wound up, as shown in FIG. 2, the sheave block 42, the fulcrum pin 46, the connecting link member 36, and the first rotating shaft 34,
The frame 10 is lifted, and the upper guide give 14 moves off the ground. At this time, one end of the lower guide give 12 is lifted in a state of being in contact with the ground.

Since the weight of the frame 10 and the auger drive mechanism 16 is very large, the connecting link member 36 rotates in a direction in which the support shaft 43, the fulcrum pin 46, and the first rotary shaft 34 are aligned. Also, the upper guide giver 14 is about to rotate in the opposite direction to the above-mentioned rotation direction via the telescopic link member 58 by its own weight. Then, in this state, the screw shaft 64 is rotated to adjust the length of the telescopic link member 58, and the grooves 30, 32 of the upper guide gib 14 and the guide rail 8 are made parallel.

The wire 24 is wound up and the upper guide give 1
When the grooves 30 and 32 of FIG.
The guide rails 8 can be easily inserted into 0, 32. Then, the wire 24 is further wound up to raise the upper guide gib 14 along the guide rail 8.

The frame 10 is lifted and the insertion holes 5
When the two 54 coincide, the rotation regulating pin 56 is inserted. Thereby, the rotation of the upper guide gib 14 around the second rotation shaft 48 is regulated. Further, when the wire 24 is wound up, the guide rail 8 can be easily inserted into the groove of the lower guide gib 12, and the state shown in FIG. 3 is obtained.

The present invention is not limited to such an embodiment at all, and can be implemented in various modes without departing from the gist of the present invention.

[0026]

As described above in detail, in the elevating device of the auger drive mechanism of the present invention, since the upper guide gib is rotated by adjusting the length of the telescopic link member, the upper guide gib can be used without using an auxiliary wire or the like. And the guide rail can be easily engaged. Also,
By using a screw shaft having left and right threads formed on the telescopic link member, the length can be adjusted with a simple configuration. Furthermore,
By using the rotation restricting pin, the upper guide gib can be easily fixed after engaging with the guide rail.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an elevating device of an auger drive mechanism as one embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a state in which a frame of the present embodiment is lifted and an upper guide gib is engaged with a guide rail.

FIG. 3 is a schematic configuration diagram of a state where upper and lower guide gibs of the present embodiment are engaged with guide rails.

FIG. 4 is a side view of a construction machine using the elevating device of the auger drive mechanism of the embodiment.

FIG. 5 is an enlarged sectional view of an upper guide give of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Construction machine 2 ... Leader 8 ... Guide rail 10 ... Frame 12 ... Lower guide gib 14 ... Upper guide gib 16 ... Auger drive mechanism 18 ... Auger screw 20 ... Hanging sheave 24 ... Wire 30, 32 ... Groove 34 ... 1st rotating shaft 36 ... Linking link member 42. Sheave block 46... Fulcrum pin 48.

Claims (3)

[Claims] 1. A frame incorporating an auger drive mechanism for rotating an auger screw is engaged with a guide rail of a reader via a guide gib to slidably support the guide rail in a longitudinal direction of the guide rail. An elevating device of an auger drive mechanism for elevating and lowering the frame through: a connecting link member rotatably supported by the frame; a sheave block in which the hanging sheave is rotatably supported by a fulcrum pin; and , Rotatably connected around the fulcrum pin, rotatably supporting the upper guide gib on the frame, and further comprising a telescopic link member capable of adjusting the length of the connecting link member and the upper guide gib. An elevating and lowering device for an auger drive mechanism, which is connected. 2. The elevating and lowering device for an auger drive mechanism according to claim 1, wherein the length of the telescopic link member can be adjusted by rotation of a screw shaft formed with left and right threads. 3. The auger lifting and lowering device for an auger drive mechanism according to claim 1, further comprising a rotation regulating pin that can be inserted into said frame and said upper guide gib.