JP2000017850A - Power-boosting device type nibbler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a structural function of a breaker body to bring out a high pressure crushing force. SOLUTION: This nibbler is provided with a nib frame 1 and a swing frame 2 facing the nib frame 1, and further an inserting and fixing means through side pins 5, 6, while putting idler links 3, 4 at both sides, in the nearly central part of these frames. Moreover, this device is provided with a function of shaft holders 7a, 7b meshing with each other to hold a center shaft 7 positioned at the center of the inside and a power-boosting structure (toggle joint) type forming three support points. This structure brings out a strong high pressure crushing force by means of the correlation of rotatable idler links 3, 4 with three support points and the side pins 5, 6, and two-step power boosting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for dismantling a building, for example, in which a dismantling machine adapted to each type of material such as wooden, concrete or steel frame is mounted on the tip of an arm of a hydraulic shovel machine. The present invention relates to a dismantling machine capable of performing a crushing operation and a cutting operation by a crushing function of a nib that is opened and closed by hydraulic pressure. Demolition machines used for these purposes are usually known as nibblers, and also known as baclars and crushers. There are various models suitable for those conditions according to the conditions. The dismantling machine used in such a field basically has a structure of scissors in its original form, has a fulcrum centered on an axis, and a power point A and an important point B are formed before and after this fulcrum C, so that hydraulic power Converts the linear motion of the cylinder and the piston into and out, and applies pressure to the nib portion of the important point B to perform a crushing operation and a cutting operation of the object to be dismantled. Among these, there are a single-shaft type and a twin-shaft type, and the present invention relates to a technology of a part configuring this shaft. Hereinafter, this dismantling machine is referred to as a nibbler.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7, this type of nibble is a single-shaft type, which is based on an original shape of a Japanese scissors in which a point of force A and a point of importance B are crossed by a shaft 25, and is mainly made of concrete. This is a work of subdivision when dismantling the structure. The nibbler of this model is powered by hydraulic pressure, and is crushed by the pressure at which the nibs 17 and 18 bite.

[0003] As another example, as shown in FIG. 8, there is a type which is of a biaxial type and is mainly used in work for dividing concrete. In this type of nibbler, a nib frame 21 or 22 forms a power point A and a point B by hydraulic power via individual shafts 19 and 20, respectively.

[0004]

However, the former one is a structure which is applied from the original form of the Japanese scissors, which is composed of the shaft 25 as the fulcrum C, the power point A and the important point B, and which belongs to the third kind of lever. However, this model is used for small-scale work mainly when dismantling concrete structures. This model is a single-shaft type, and the shaft 2 serving as a fulcrum C
5 are arranged in the order of C, A, and B, consisting of the position of the piston pin 28 that is the point of force A and the position of the nib point 26 of the important point B. These structures are the swing frame 2
There is a definite reason for the correlation between 2 and the piston pin 28.
This unreasonable structure is to apply pressure in a direction in which the direction of the linear movement of the piston 29 expands and contracts with respect to the direction of movement of the swing frame 22. That is, the movement direction of the swing frame 22 and the direction in which the pressure of the piston 29 is applied are not the original directions of the third type lever, but the pressure is consumed in an irrational direction, and the hydraulic energy is greatly reduced. Was.

[0005] The latter is a two-axis type, and in this model, it is used for work of dividing concrete by opening and closing operations of both swing frames 30 and 31. More specifically, first, the nib points 26, which are important points B, are arranged in order from the positions of the hydraulic cylinder 32 and the piston 33, which are the power points A, via the two shafts 23, 24, which are the fulcrums C. A, C,
Arranging in the order of B has the first kind of leverage configuration. With such a structure, when the dismantling target object is fixed to the ground when performing the dismantling operation, the movement of the fulcrum C in the front and rear positions occurs when the nibs 34 and 35 are opened and closed. That is, in the operation of gradually reducing the nib point 26 after the nib point 26 starts to bite the concrete fixed to the ground, a reaction occurs in which the positions of the two shafts 23 and 24 serving as the fulcrum C are retracted. This reaction has the problem that pushing the large weight of the excavator body behind the two shafts 23 and 24 greatly reduces the hydraulic pressure required for the crushing force.

As described above, the correlation between the fulcrum A and the fulcrum B with the axis as the fulcrum C is the length of the line segment connecting the fulcrum A and the fulcrum C with respect to the length between the fulcrum B and the fulcrum C. The shorter the is, the stronger the force is, and the longer the change during opening / closing operation can be easily interpreted as the weaker the force, the result is a problem that conflicts with the work purpose. .

Further, in order to compensate for such reduced power, the power of the engine of the excavator body is fully opened, and the size of the engine is increased to increase the output of the engine.
Countermeasures must be taken, so the excavator becomes larger and the work radius is limited and the weight burden is increased.When working on the roof of a high-rise building, floor strength and support safety must be ensured. The problem was that problems and economic losses were inevitable.

[0007] The present invention has been proposed in view of the above, and it is an object of the present invention in the demolition work of buildings, concrete crushing work requires a powerful crushing force, so that more powerful. To solve these demands and to provide a booster-type nibbler that can achieve both safety and economic efficiency by using a mechanism of a toggle joint that enables high-pressure crushing force. is there.

[0008]

The present invention comprises a nib frame 1 and a swing frame 2 on a side facing the nib frame 1, and a semi-cylindrical recess surrounding a center shaft 7 from both sides at a substantially central portion thereof. The curved shaft holders 7a and 7b are provided, and the swing frame 2 is provided.
Is formed so as to freely rotate around the center shaft 7, thereby achieving the object of claim 1.

The fixing means for holding the idler links 3 and 4 is provided with side pin holes 5a and 6a at substantially the center of the nib frame 1 and the swing frame 2, and on both sides of the idler links 3 and 4. Side pin hole 5b
And 6b are inserted and fixed via side pins 5 and 6 to achieve the object of claim 1.

Further, in the hydraulic device, a cylinder 8 is mounted inside the nib frame 1, and a holding means for linking a piston 9 is provided at an end of the swing frame 2. It is configured to be free, and the object of claim 2 is achieved.

Further, nibs 10 and 11 which are part of the important point B
A plurality of nib points 12 are provided in the projections, and the nib points 12 are formed in a protruding shape which is easy to bite when crushing concrete, thereby achieving the object of claim 2.

Further, cutters 13a and 13b are provided in the deep portion of the nibs 10 and 11, so that a reinforcing bar or a steel frame can be cut, thereby achieving the object of claim 1.

Further, a rocker beam 14 is provided on the upper side of the nibbler main body, and arm pins 15a and 15b are inserted and attached to the tip of an arm 16 of the shovel machine via pin holes 14a and 14b. You have achieved your goal.

[0014]

1 to 6 show an embodiment of the present invention. Among them, FIG. 1 is a perspective view of the present invention, FIG. 2 is a plan view of the present invention, FIG. 3 is an exploded perspective view of a main part, and FIG. 5 is an explanatory conceptual diagram of a position change in the case of two axes during opening / closing operation, and FIG. 6 is an operational conceptual diagram of each axis in the case of three axes of the present invention.

In these figures, first of all, in FIGS. 1 and 2, reference numeral 1 denotes a nib frame 1 made of steel having a slightly U shape, and a swing frame 2 is provided on the opposite side thereof. At substantially the center, concave shaft semi-cylindrical shaft holders 7a and 7b fitted with the center shaft 7 are formed so as to surround the periphery, and serve as a first fulcrum when the swing frame 2 is opened and closed. The structure is such that a range of about 45 degrees can be rotated.

Next, the idler links 3 and 4 are abutted from both sides via side pins 5 and 6, and when the swing arm 2 opens and closes, the side pins 5 are used as a second fulcrum, and the side pins 6 are It has a structure that enables it to move back and forth in a circular orbit.

The first fulcrum and the second fulcrum support the circular orbit of the side pin 6.
Is also a third fulcrum that moves back and forth while rotating.

That is, a booster mechanism (t) serving as three fulcrums
This is a two-stage amplification system that is constituted by a configuration of an “angle joint”.

This booster mechanism has a characteristic that the force can be increased without deceleration due to the correlation between the power point A and the important point B. The characteristic is that when the nibs 10 and 11 are opened and closed, This means that the emphasis B on the nib side moves the same amount by the amount of the angle at which the power point A has moved. In other words, the ability to amplify the force without deceleration means that the momentum of the power point A is small and the designated movement range of the important point B can be obtained. Therefore, the opening and closing operation time of the nib is the same as the one-stage amplification model, and the two-stage amplification is performed. It means that the function can be performed. Furthermore, the side pin 6
Has a function of applying pressure to the dismantling target object while the position of the axis approaches. This function is enabled because the rotation of the center shaft 7 at the third fulcrum position of the side pin 6 resists the fitting,
The structure in which the side pin 6 rotates on the orbit around the side pin 5 as a fulcrum is a source of moving the position of the side pin 6.

First, as shown in FIG. 6, the form of operation consisting of these three fulcrum points is the center which receives the first resistance with respect to the length L of the line segment from the point of force A to the third fulcrum C of the side pin 6. The magnification of the length of the line segment from the center of the shaft 7 to the third fulcrum is the first amplification. The relationship between the power point A, the fulcrum C, and the important point B is the first kind of leverage application. Next, the force amplified in the first time is the length L of the line segment from the center of the center shaft 7 to the side pin 6 and the side pin 5
The magnification of the length of the line segment from to to the side pin 6 is the second amplification. The power point A in this case is the center shaft 7
The length of the line segment from to the side pin 6 and the emphasis B are the movement of the position of the side pin 6. At this time, the fulcrum C is the side pin 5. Therefore, the arrangement relationship of the power point A, the important point B, and the fulcrum C is established by the second type of leverage application.

[0020] As described above, the structure of the mechanism for amplifying the hydraulic driving force in two stages can generate a strong power and generate a high-pressure crushing force of the nib.
This makes it possible to easily grind or cut the steel frame.

[0021]

As described above, according to the present invention, the side pin 6
Is a structure that moves forward with strong power to the object to be dismantled, and the method of gradually increasing the distance between the fulcrum and the point of importance works advantageously, so that the hydraulic pressure can be operated efficiently and the shovel machine saves energy In addition to being able to solve problems such as limiting the radius and limiting the weight, it also enables high-efficiency dismantling work that exhibits excellent effects such as economy of operating fuel economy.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a plan view of the present invention.

FIG. 3 is an exploded perspective view of a main part of the present invention.

FIG. 4 is a conceptual diagram illustrating the trajectory of three fulcrums during the opening / closing operation of the present invention.

FIG. 5 is a conceptual diagram illustrating a change in a fulcrum position in the case of a conventional one-axis type.

FIG. 6 is a conceptual diagram illustrating a change in a fulcrum position in the case of a conventional two-axis type.

FIG. 7 is a conventional single-shaft nibble.

FIG. 8 is a conventional two-axis type nibbler.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Nib frame 2 Swing frame 3 Idler link 4 Idler link 5 Side pin 5a Side pin hole 5b side pin hole hole 6 Side pin 6a Side pin hole 7 Center shaft 7a Shaft holder 7b Shaft holder 8 Cylinder (piston) cylinder Nib (nib) 11 Nib (nib) 12 Nib point 13a Cutter 13b cutter 14 rocker beam 14a arm pin hole 14b arm pin hole 15a arm pin 15b arm pin 16 arm 17 arm Nib 19 axis 20 axis 21 nib frame 22 nib frame 23 axis 24 axis 25 axis 26 nib point 27 nib point 27 concrete 28 piston pin (piston pump) piston) 30 Swing frame 31 Swing frame 32 Cyli nder 33 piston 34 nib 35 nib 36 bush 37 lock bolt 38 cylinder pin 39 cutter 40 cutter pin 41 arm pin hole arm pin hole 42 arm pin hole 43 rocker beam 44 piston pin ho
le) 45 bearing frame

Claims (2)

[Claims] 1. A nib frame (1), and a swing frame (2) on a side facing the nib frame (1),
At approximately the center of these, idler links (3) and (4) are applied to both sides, and side pins (5) and (6)
And a means for holding the center shaft (7) is provided therein, the crushing portions of the nibs (10) and (11) are exposed, and the swing frame (2) is configured to be openable and closable. A booster-type nibler that is operated by hydraulic pressure. 2. The mounting means for holding the center shaft (7) includes a nib frame (1) and a swing frame (2).
The shaft holders (7a) and (7b), each having a semi-cylindrical concave curved surface, are provided on both sides at substantially the center of the center shaft, and are mounted so as to surround the center shaft (7) from both sides. The nibler of the booster type according to claim 1, wherein