JPH0246257B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a tooth plate used for crushing raw material in a geo crusher.

[Prior art and its problems] Conventionally, in a geo crusher, as shown in FIG. 6, the tooth plate has a crushing surface 1 for crushing the crushed raw material, and has a ridge portion 1a and a trough portion 1b in the width direction.
are repeated alternately and are formed into a uniform wave shape as a whole, and such a tooth plate is
As shown in the figure, the fixed part 2 of the jaw crusher
and the power unit 3, which repeatedly moves toward and away from the fixed unit 2 with small amplitudes, with their respective crushing surfaces 1 facing each other, and as shown in FIG.
b are attached so that they mesh with each other, and these two tooth plates form a V-shaped fracture portion 4 whose downward portion is contracted.

Then, the crushed raw material is introduced into this V-shaped crushing section 4 from above, and the toothed plates attached to the power section 3 are driven, and the inputted raw material is crushed between the crushing surfaces 1, 1 of these two toothed plates. In between, the raw material is compressed one after another as it goes downwards in the V-shaped crushing section 4, and the raw material is finely crushed by the shearing force caused by the engagement of the peaks 1a and troughs 1b on these crushing surfaces 1, 1. The crushed raw material was discharged from a discharge port 5 between tooth plates at the lower end of the V-shaped crushing part 4.

However, when trying to crush a crushed raw material such as asphalt, which is sticky and relatively hard to break, with a geo crusher using such tooth plates, as the raw material goes below the V-shaped crushing part 4, the crushing surface 1, However, since these crushing surfaces 1, 1 are formed into a uniform waveform as a whole as described above, sticky raw materials can be crushed without cracking. It only gradually deforms into a shape that matches the waveform between surfaces 1 and 1 and spreads laterally.Also, as a result, the contact area with the crushing surface 1 increases, the crushing pressure applied to the raw material decreases, and the raw material There was a problem in that it became even more difficult to crush, and the crushing ability of the geo crusher was significantly reduced. In addition, in the case of such raw materials, the raw materials are not finely pulverized and are discharged from the discharge port 5 between the tooth plates at the lower end of the V-shaped crushing section 4 in the state of large chunks deformed into waveforms as described above, and are re-pulverized. There were problems such as having to crush the lumps.

Furthermore, if the raw material contains oil such as asphalt, the oil will flow out and the raw material will easily slip between the crushing surfaces 1 and 1, causing the movement of the tooth plate attached to the power section 3 In addition, the raw material moves up and down between the crushing surfaces 1 and 1, and remains in the V-shaped crushing section 4 for a long time without being released from the discharge port 5 at the lower end of the V-shaped crushing section 4, further reducing the crushing ability of the J-shaped crusher. There was a problem.

[Means for Solving the Problems] This invention was made to solve the above-mentioned problems when crushing raw materials such as asphalt, which is sticky and relatively hard to break, is crushed with a geocrusher. The tooth plate used in the jaw crusher was constructed as shown below.

In this invention, when forming the crushing surface 10 of the tooth plate used in the geo-crusher into a waveform in which peaks 11 and troughs 12 are alternately repeated in the width direction, the center portion of the crushing surface 10 in the length direction While forming a small wave portion 13 with a large number of waves and a small amplitude,
At least one end in the length direction of the fracture surface 10 is formed with a large wave portion 14 having a small wave number and a large amplitude.

Here, the large wave portion 14 is formed by alternately repeating large peak portions 11b and large valley portions 12a, while the small wave portion 13 is formed by providing a peak portion 11b at a position corresponding to the peak portion 11a of the large wave portion 14. , between the peaks 11b, that is, the valleys 12a of the large wave section 14.
A ridge portion 11b having small valley portions 12b on both sides is formed at a position corresponding to .

Further, it is desirable that the large wave portions 14 be formed at both ends of the fracture surface 10 in the length direction.

[Function] Then, the tooth plate configured as described above is placed with its large wave portion 14 facing downward, and is pressed against the fixing portion 2 of the jaw crusher with a small amplitude as in the conventional case. Power unit 3 that repeatedly approaches and departs
Then, the respective crushing surfaces 10, 10 are opposed to each other, and the crests 11a and troughs 12a of the large wave parts 14, 14 on both tooth plates are engaged with each other.
V-shaped fracture part 4 whose lower part is contracted by two tooth plates
It forms.

Then, the crushed raw material inputted into this V-shaped crushing section 4 is driven by a toothed plate attached to the power section 3, and the raw material is crushed between the small wave parts 13 and 13 of both toothed plates and the large wave part 1.
It is designed to crush between 4 and 14.

In addition, if the crushed raw material is sticky and relatively hard to break, such as asphalt, the small wave part 1
Between 3 and 13, the fibers are sequentially compressed and deformed while being guided downward toward the large wave portion 14 side.

The raw material guided from between the small wave portions 13 and 13 in this way is subjected to shearing force due to the engagement of the respective peaks 11a and troughs 12a between the large wave portions 14, 14 where the wavelength is long and the amplitude is large. It is now being crushed by In other words, since the wavelength and amplitude between the large wave portions 14 and 14 are different from those of the small wave portion 13, shearing force in a direction different from the compressive force between the small wave portions 13 and 13 acts, and the compression force between the small wave portions 13 and 13 acts. The compressed and deformed raw material comes to be crushed.

Further, in addition to providing the peak portion 11b in the small wave portion 13 at a position corresponding to the peak portion 11a of the large wave portion 14, an additional one is provided between the peak portions 11b, 11b, that is, a position corresponding to the trough portion 12a of the large wave portion 14 In the case of using a toothed plate formed with two grooves, when the tooth plate is attached to the jaw crusher so that the peaks 11a and troughs 12a of the large wave parts 14, 14 mesh with each other as described above, the peaks between the small wave parts 13, 13 11b and Yamabe 1
1b come to face each other, and when crushed raw material such as asphalt, which is sticky and relatively hard to break, is compressed between these small wave parts 13, 13, the peak part 11
The portion where b and the peak portion 11b face each other is constricted, and that portion is likely to break.

In addition, if the large wave portions 14 are formed at both longitudinal ends of the crushing surface 10, even if the large wave portion 14 on one side is worn out due to use, the tooth plate can be turned upside down and
It can be installed with the other large wave part 14 facing down and used again.

[Example] An example of this invention will be described in detail based on FIGS. 1 to 5.

In the tooth plate shown in this embodiment, the crushing surface 10 for crushing the raw material is formed in a wave shape in which peaks 11 and valleys 12 are alternately repeated in the width direction, as shown in FIG. .

The central part in the length direction of this fracture surface 10 is
While small wave portions 13 with a large number of waves and a small amplitude are formed, both ends of the fracture surface 10 in the length direction are formed with large peak portions 11a and large trough portions 12a alternately repeated in the width direction. It is formed in a large wave portion 14 with a small amount and a large amplitude.

Here, the small wave portion 13 at the center in the length direction of the fracture surface 10 corresponds to the large peak portion 11 of the large wave portion 14.
A ridge portion 11b is provided at a position corresponding to a, and a small ridge portion 11b having small trough portions 12b on both sides is provided between the ridge portions 11b, 11b, that is, at a position corresponding to the trough portion 12a of the large wave portion 14. It is formed.

In addition, the portion from the small wave portion 13 to the large wave portion 14 is the trough portion 1 of the large wave portion 14, as shown in FIG.
The small peaks 11b and small troughs 12b of the small wave portion 13 located at positions corresponding to 2a form the large wave portion 14.
The notch is inclined so as to fit with the trough 12a.

Then, the tooth plate formed in this way is placed so that the large wave part 14 at one end is at the bottom, and as shown in FIG. The crushing surfaces 10, 10 are made to face the power unit 3 which repeats approaching and separating from each other, and as shown in FIG.
The crests 11a and troughs 12a of 4 are attached so as to mesh with each other, and these two tooth plates form a V-shaped crushing part 4 whose lower part is contracted. When each tooth plate is attached in this way, each fracture surface 10,
10, where the small wave parts 13, 13 face each other, as shown in FIG.
The ridges 11b at the positions corresponding to the ridges 1a and the small ridges 11b provided between the ridges 11b come to face each other.

Here, the crushed raw material, which is sticky and relatively hard to break, such as asphalt, is introduced from above into the V-shaped crushing section 4, and when the tooth plate attached to the power section 3 of the geo crusher is driven, the material is input. The crushed raw material is compressed between the small wave portions 13, 13 of both tooth plates, and is successively guided below the V-shaped crushing portion 4, and the crest portion 11b and the ridge portion 1
Where it faces 1b, it becomes constricted and weak.

Then, the crushed raw material guided below the V-shaped crushing section 4 is transferred to the large wave section 14 at the lower end of the small wave section 13.
When you reach the transition part, in this part,
Since the gap between the tooth plates is larger than that between the small wave parts 13, 13, the raw material is smoothly guided between the large wave parts 14, 14.

The raw material guided between the large wave parts 14, 14 in this way is crushed by the shearing force caused by the meshing of the peaks 11a and troughs 12a of the large wave parts 14, 14. That is, since the wavelength and amplitude between the large wave portions 14 and 14 are different from those of the small wave portion 13, a shearing force different from the compressive force between the small wave portions 13 and 13 acts on the raw material, and as described above, the small wave portion By compression between the parts 13 and 13, the raw material is finely crushed in the constricted and weakened part, and is discharged from the outlet 5 between the tooth plates at the lower end of the V-shaped crushing part 4.

Here, the particle size of the crushed raw material discharged from the discharge port 5 is determined by the spacing S of the discharge port 5, that is, the gap between the large wave portions 14, 14 at the lower ends of the tooth plates. For this reason, when attaching the tooth plate to the jaw crusher, the interval S between the discharge ports 5 is usually set to be approximately 40 to 150 mm, and the crest 11 of the large wave portion 14 at the lower end of the small wave portion 13 is
The gap S1 between a and 11a is the same as the gap S between the discharge ports 5.
The ratio should be 0.8 to 1.3 times, preferably 0.9 times.

Furthermore, regarding the large wave part 14, if the length is extremely short, the raw material will not be crushed sufficiently, while if it is made too long, the crushed raw material may be compressed and solidified again. It is desirable that the length L, which is the sum of the portion that transitions to the section 14 and the large wave section 14, is about 2 to 3 times the interval S between the discharge ports 5.

Further, the wavelength P of the large wave portion 14 is 1 to 2 times the interval S of the discharge ports 5, and the wave height H thereof is the interval S of the discharge ports 5.
Furthermore, if the radius R of the peaks 11a and troughs 12a is too large, the crushing force of the raw material will be reduced, but if it is too small, the abrasion will be severe. /3 to 1/5.

[Effects of the Invention] As described in detail above, in the tooth plate of the geo crusher according to this invention, a small wave portion with a large number of waves and a small amplitude is formed at the center in the length direction of the crushing surface. A large wave part with a small wave number and a large amplitude is formed at at least one end in the direction, and the tooth plate is placed so that the large wave part is at the bottom.
The fixed part and the power part of the J-Yoke crusher are installed so that their respective crushing surfaces face each other, and the peaks and troughs of the large wave part mesh with each other, and the V-shaped crushing part formed by both tooth plates is used to crush the crusher. The raw materials are guided downward one after another and are crushed between small waves and between large waves.

For this reason, even if the crushed raw material is sticky and relatively hard to break, such as asphalt, and is only compressed and deformed without being sufficiently crushed between the small corrugations, the The raw material is then guided between large waves with longer wavelengths and larger amplitudes, and due to the interlocking of the peaks and troughs between the large waves, a shearing force in a direction different from the compressive force between the small waves is generated. As a result, the material can be easily crushed without increasing the power of the geo crusher.

In addition, when using this tooth plate, the angle of the force that compresses the raw material changes in the part where the waves change from the small wave part to the large wave part, and the space between the tooth plates becomes larger in that part, so asphalt etc. Unlike the conventional method, in which even if oil flows out from the raw material and becomes slippery, the gap between the tooth plates gradually narrows and the compressive force increases, the raw material is moved by the tooth plate attached to the power section. There is no vertical movement between the fracture surfaces in accordance with the movement.

As a result, when this tooth plate is used, it becomes possible to easily crush crushed raw materials such as asphalt that are sticky and relatively difficult to break, and also to prevent oil from leaking from the raw materials. This does not reduce the crushing ability.

In addition, in this tooth plate, when the crests in the small wave part are provided at positions corresponding to the crests in the large wave part, and one further is provided between the crests, that is, at the position corresponding to the troughs in the large wave part, When this tooth plate is attached to the geo crusher as described above, the ridges face each other between the small corrugations, and when the crushed raw material is compressed between the small corrugations, the ridges face each other. As a result of the compression, the crushed raw material becomes constricted and becomes brittle, and is easily and finely crushed by the shearing force caused by the engagement of the peaks and valleys between the large wave parts.

Furthermore, by forming large corrugations at both longitudinal ends of the fractured surface, even if one large corrugation section wears out due to use, it can be used again by flipping the tooth plate upside down and attaching it. This allows the tooth plate to be used effectively and over a long period of time.

[Brief explanation of drawings]

1 to 5 show embodiments of the present invention, FIG. 1 is a perspective view, FIG. 2 is a longitudinal sectional view, and FIG. 3 is a schematic sectional view showing the state in which it is attached to a jaw crusher.
Fig. 4 is a cross-sectional view showing the meshing state between the small wave parts when installed on a geo-clutcher, Fig. 5 is a cross-sectional view showing the meshing state between the large-wave parts when it is installed on a geo-clutcher, and Fig. 6 is FIG. 7 is a perspective view of a conventional tooth plate, FIG. 7 is a schematic cross-sectional view showing a state in which the conventional tooth plate is attached to a jaw crusher, and FIG. 8 is a cross-sectional view showing a state in which the conventional tooth plate is engaged. Explanation of symbols, 10...Fracture surface, 11...Mountain part,
12... Valley part, 13... Small wave part, 14... Large wave part, 11a... Peak part of large wave part, 11b... Peak part of small wave part, 12a... Valley part of large wave part, 12b... Small wave part Tanibe.

Claims (1)

[Scope of Claims] 1. In a tooth plate of a geo-crusher, in which the crushing surface 10 is formed into a wavy shape with peaks 11 and troughs 12 repeated alternately in the width direction, the crushing surface 10
A small wave part 13 with a large number of waves and a small amplitude is formed at the center in the length direction, while a large wave part 14 with a small number of waves and a large amplitude is formed at at least one end in the length direction of the fracture surface 10. The tooth plate of Jyo Crushsha is characterized by the following. 2 The large wave portion 14 is formed by alternately repeating large peak portions 11b and large trough portions 12a, while the small wave portion 13 is formed by repeating the large peak portions 11b and large valley portions 12a.
A peak 11a is formed at a position corresponding to 1a, and small valleys 1 are formed on both sides between the peak 11a.
2. The gear tooth plate of claim 1, further comprising a peak portion 11a having 2b. 3. The tooth plate of a geo crusher according to claim 1 or 2, wherein the large wave portions 14 are formed at both longitudinal ends of the crushing surface 10.