JPH0152155B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a crusher equipped with a crushing tool for the purpose of crushing and removing objects.

A crusher as shown in Figure 1 or Figure 2 is used for conventional crushing work, for example, crushing and removal work of ladle or converter lining bricks, slag, and slag used in iron manufacturing work. was.

The crusher shown in FIG. 1 is an excavator used for construction and civil engineering work, with a crushing tool attached to the tip of the arm. A indicates a ladle, and B indicates a material to be crushed such as slag. 1 is a chisel, a crushing tool equipped with a breaker,
2 is an arm, 3 is a boom, 4 is an upper rotating body, 5 is a lower traveling body, 6, 7, and 8 are hydraulic cylinders, and 9, 10, and 11 are pins, respectively.

Therefore, the crushing tool 1 has the respective pins 9, 1
It only receives oscillating motion around 0,11,
The position and posture of the crushing tool 1 are limited, and the crushing efficiency for the object B, which differs depending on the direction of impact with the chisel, is significantly reduced, and the ladle A
When crushing the inner circumferential surface of a cylindrical container like this, there are some areas that cannot be crushed, and manual work using other tools is required. Furthermore, both hydraulic cylinders 6,
7 is installed close to the crushing tool 1,
It is easily damaged by the thermal influence from the object to be crushed B and by the flying debris that accompanies the crushing, and its use is also limited.

Further, as a conventional example, a crusher shown in its entirety in FIG. 2 and in cross section of a main part in FIG. 3 will be described.

A is the ladle, B is the object to be crushed, 1' is the crushing tool, 2' is the arm, 3' is the rotating boom, 3'' is the vertical boom, 4
5 is a lower traveling body, and 8 is a hydraulic cylinder.

The crushing tool 1' is pivoted to the arm 2' with a pin 2'a, and the arm 1'a that projects at an angle at the rear has its tail part pivoted inside the arm 2' with a pin 2'b. A pin 12b is connected to a piston rod 12a of the hydraulic cylinder 12. Therefore, the crushing tool 1' is the piston rod 1
It can swing around pin 2'a by actuation of 2a.

A hydraulic cylinder 13 whose tail end is pivoted within the rotary boom 3' with a pin 3'a is built into the arm 2' which is swingably housed within the rotary boom 3'.
The piston rod 13a is pivotally attached to the arm 2' by a pin 2'c. Therefore, the arm 2' can move back and forth (move left and right in the figure) with respect to the rotating boom 3' by the operation of the hydraulic cylinder 13.

A drive gear 16 is provided on the outer periphery of the rotary boom 3' rotatably supported within the uplifting boom 3'' and meshes with a pinion 15 provided at the tip of the uplifting boom 3'' and driven by a hydraulic motor 14. is fixed.
The rotary boom 3' can therefore be rotated within the raised boom 3'' by the drive of the pinion 15.

The boom 3'' is pivotally supported by a pair of pins 17a of a bracket 17 provided on the revolving upper structure 4, and a piston of a hydraulic cylinder 8 whose tail end is pivoted to the revolving upper structure 4 by a pin 11. It is pivotally attached to the tip of the rod 8a with a pin 3''a. Therefore, the vertical boom 3'' can be rotated around the pin 17a by the operation of the piston rod 8a to change the vertical angle.

Since it is configured as described above, the rotating movement of the upper revolving body 4, the lifting movement of the lifting boom 3'', the rotational movement of the rotating boom 3', the back and forth movement of the arm 2', and the swinging of the crushing tool 1'. The crushing tool 1' can take any position and posture by movement, but since the hydraulic cylinder 12 is built into the arm 2' and the arm 2' is moved back and forth by the hydraulic cylinder 13, the entire device is It is large in size and has a complicated structure, and also requires a rotary oil supply joint 18 to supply pressure oil to the internal hydraulic cylinders 12 and 13 via the rotary boom 3'. When crushing a tall object to be crushed, it was necessary to construct both hydraulic cylinders 12 and 13 with measures against radiant heat.

As mentioned above, this type of conventional crusher has a complicated structure, is heavy, and has high manufacturing costs.
Both had drawbacks such as their large size, which obstructed the operator's field of vision.

The present invention has been made in view of the above circumstances, and has a simplified structure that eliminates the drawbacks of the conventional machine as described above, allows the crushing tool to take any position and posture, and prevents hydraulic equipment from being exposed. The purpose is to provide a crusher that is not affected by the heat of crushed materials.

An embodiment of the crusher according to the present invention will be described based on FIGS. 4 to 6.

Chisel 21a, breaker 21b, holder 21c
The crushing tool 21 consists of a holder 21c that is inserted into the fork-shaped tip of an arm 22 and is pivoted by a pin 22a, and a lower end of the holder 21c is connected to a pin 21d via a link 23. A pin 25a is connected to the tip of a piston rod 25 that passes through the arm 22 of a hydraulic cylinder 24 fixed to the tail end surface of a sliding boom 26, which will be described later. Therefore, by introducing pressure oil into the hydraulic cylinder 24 from outside, the piston rod 25 can be actuated to swing the crushing tool 21 around the pin 22a.

The arm 22 is inserted into the swinging boom 26,
It is rotatably supported at its front and rear parts.
The sliding boom 26 is inserted into a vertical boom 27 (described later) and can slide only in its axial direction, and a pinion 29 directly connected to a hydraulic motor 28 is provided at its tail. ,
A drive gear 30 fixed to the tail of the arm 22 is driven. Therefore, the arm 22 can be rotated within the sliding boom 26 by introducing pressure oil into the hydraulic motor 28 from the outside and driving the drive gear 30.

The boom 27 has a pin 17a attached to the bracket 17 provided on the upper revolving structure 4 at the lower part near its tail end.
The lower part near the head is connected to the upper rotating body 4.
A pin 27a is connected to the tip of the piston rod of the hydraulic cylinder 8, which is connected to the pin 11. Therefore, by introducing pressure oil into the hydraulic cylinder 8 from outside, the boom 27 can slide around the pin 17a and change the angle of elevation.

Next, a mechanism for moving the sliding boom 26 relative to the vertical boom 27 will be explained based on FIGS. 5 and 6. Flange portions 27 are provided at both ends of the boom 27.
b, 27b, and each flange portion 27b is provided with a plurality of protruding pairs of bearings 27c that support a pin 32 that pivotally supports a roller 31 that rolls on the outer periphery of a sliding boom 26 that has a hollow prismatic cross section. There is. Opposing through holes 27d are formed in both flange portions 27b, and a pin rack chain 33, which will be described later, is inserted into the through holes 27d. Both take-ups 3 are provided at both ends of one outer side of the sliding boom 26.
A pin rack chain 33 is stretched between the two holes 27d, 27d of the boom.

The teeth of a sprocket 36 driven by a hydraulic motor 35 fixed to the side surface of the boom 27 mesh with the pin rack chain 33. Therefore, by introducing pressure oil from the outside into the hydraulic motor 35 and driving it, the pin rack chain 33 is driven to move the sliding boom 26 within the lifting boom 27.
The hydraulic motor 35
By stopping the driving of the sliding boom 26, the sliding boom 26 can be held in the stopped position.

Since the crusher according to the present invention is configured as described above, the rotating movement of the upper revolving body 4, the lifting movement of the lifting boom 27, the back-and-forth movement of the sliding boom 26, the rotational movement of the arm 22, and the rotational movement of the piston rod 25. By moving back and forth, the crushing tool 21 can assume any position and posture.

It goes without saying that a scraping tool can be attached instead of the crushing tool and used exclusively for removal work.

The crusher according to the present invention includes a lifting boom that is installed on an upper rotating structure so as to be able to move freely, and a pin rack chain that engages with a sprocket driven by a hydraulic motor fixed to the lifting boom. a sliding boom that can move back and forth along its axis and hold any stop position; an arm that is housed within the sliding boom and rotates by the drive of a pinion provided at the tail of the sliding boom; The lower end of the piston rod is pin-coupled via a link to the tip of a piston rod that passes through the arm of a hydraulic cylinder that is pivotally attached to the tip of the arm and fixed to the tail end of the sliding boom. It has ingredients. Therefore, since the crushing tool can take any position and posture, there will be no portions that cannot be crushed during the crushing operation, and there will be no reduction in crushing efficiency due to the direction of impact of the chisel. Since the hydraulic cylinder is not built into the arm and the gear system is installed at the tail of the sliding boom, the entire device can be made smaller, the operator's field of vision is less obstructed, and the hydraulic equipment is separated from the crushing tool. Because the crusher is located in such a position, there is no need to worry about the thermal effects of the crushed objects or damage caused by flying debris caused by crushing, and it is possible to provide a crusher that also reduces costs.

[Brief explanation of drawings]

Fig. 1 is a side view showing a conventional example of a crusher, Fig. 2 is a side view showing another conventional example of a crusher, and Fig. 3 is a longitudinal cross-section of main parts of another conventional example of the crusher shown in Fig. 2. side view,
FIG. 4 is a vertical cross-sectional view of a main part of the crusher according to the present invention, FIG. 5 is an enlarged cross-sectional view taken along the line -- in FIG. 4, and FIG. 6 is a cross-sectional view showing the moving mechanism of the sliding boom. 21: Crushing tool, 21c: Holding tool, 21d: Pin, 22: Arm, 22a: Pin, 23: Link, 24: Hydraulic cylinder, 25: Piston rod, 25a: Pin, 26: Sliding boom, 27: Lifting boom , 27a: pin, 27b: flange part,
27c: bearing, 27d: through hole, 28: hydraulic motor, 29: pinion, 30: drive gear, 31: roller, 32: pin, 33: pin lock chain,
34: Take-up, 35: Hydraulic motor, 36:
Sprocket.

Claims (1)

[Claims] 1 The lift boom is installed on the upper revolving structure so that it can move freely, and the pin rack chain is engaged with a sprocket driven by a hydraulic motor fixed to the lift boom. A sliding boom that can move back and forth and hold any stop position, an arm that is housed in the sliding boom and rotates by the drive of a pinion installed at the tail of the sliding boom, and a pivot attached to the tip of the arm. and a crushing tool whose lower end is pin-coupled via a link to the tip of a piston rod that passes through an arm of a hydraulic cylinder fixed to the tail end of a sliding boom, and which is swingable with respect to the arm. Shredding machine.