JP3800566B2 - Self-propelled crusher - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a self-propelled crusher that crushes rocks and the like generated by blasting work during tunnel excavation and facilitates transporting them outside the tunnel.
[0002]
[Prior art]
As shown in Japanese Patent Laid-Open No. 6-173594, rocks and the like generated by blasting work during tunnel excavation are put into a self-propelled crusher with an excavator loader and crushed. There has been proposed a shear conveying device that conveys to a stretching belt conveyor and conveys it outside the tunnel with the stretching belt conveyor.
[0003]
The above-mentioned self-propelled crusher is equipped with a crusher, hopper, grizzly feeder, conveyor, etc. in the machine equipped with a traveling body, and the shear is loaded into the hopper with a shovel loader, and the shear is conveyed to the crusher with the grizzly feeder. Then, the crushed pieces crushed by the crusher are dropped onto the conveyor and conveyed to the rear of the machine body.
[0004]
[Problems to be solved by the invention]
In order to put the shear into the hopper of the mobile crusher with the shovel loader, the shear is put into the bucket of the shovel loader, the bucket is lifted above the hopper, and the bucket is swung downward in that state to move the bucket. The internal shear is thrown into the hopper.
[0005]
For this reason, since the bucket moves upward from the hopper, the bucket may interfere with the top plate of the tunnel, and it is important for the self-propelled crusher that crushes shear in the tunnel to lower the hopper. is there.
[0006]
However, the above-mentioned conventional self-propelled crusher transports the shear in the hopper to the crusher inlet with a grizzly feeder, and the crusher inlet is almost horizontal for reasons such as crushing efficiency. In addition, there is a limit to lowering the hopper due to the fact that a conveyor for conveying the crushed pieces is provided below the crusher.
[0007]
Then, an object of this invention is to provide the self-propelled crusher which enabled it to solve the above-mentioned subject.
[0008]
[Means for solving the problems and actions / effects]
1st invention conveys the crusher 13, the hopper 14, and the shear in the hopper 14 to the crusher 13 to the machine body 12 provided with the traveling body 11, the grizzly feeder 15 which has a sieving function, and the crush pieces of the crusher 13 And a conveyor 16 for transporting the material sifted by the grizzly feeder 15,
The crusher 13 is a jaw crusher in which the moving teeth 31 and the fixed teeth 32 are V-shaped. The moving teeth 31 are substantially vertical when stopped, and the fixed teeth 32 have an upper end portion perpendicular to a lower end portion. The angle between the moving tooth 31 and the stationary tooth 32 at the time of the stop is obliquely close to the grizzly feeder 15 and ranges from 20 degrees to 25 degrees .
The self-propelled crusher is characterized in that the grizzly river 24 of the grizzly feeder 15 has a stepped shape with an upper surface 24b facing the conveying direction and a plurality of stepped portions 45 .
[0009]
According to the first invention, the upper end portion 32 a of the fixed tooth 32 of the crusher 13 is lowered, the insertion port 33 between the moving tooth 31 and the fixed tooth 32 is lowered, and the shearing from the insertion port 33 is caused. When the moving tooth 31 is swung, it does not jump out.
[0010]
Accordingly, the inlet 33 can be lowered without reducing the crushing capacity of the crusher 13, and thus the hopper 14 can be lowered accordingly.
[0011]
Therefore, when crushing the shear near the face of the tunnel, the loader bucket that throws the shear into the hopper 14 does not hit the top plate of the tunnel, and is suitable as a self-propelled crusher that crushes the shear in the tunnel. Become.
[0012]
Further, since the grizzly river 24 of the grizzly feeder 15 has a plurality of step portions 45 in a step shape with the upper surface 24b facing the conveyance direction, even if the grizzly river 24 is inclined at a large angle with respect to the horizontal, the grizzly river 24 The upper slip is caught on the step 45 and does not slide down.
Thereby, even if the grizzly feeder 15 is inclined at a large angle with respect to the horizontal, the shear in the hopper 14 can be conveyed to the crusher 13.
Therefore, since the height of the hopper 14 side can be remarkably lowered with respect to the height of the grinder feeder 15 on the side of the crusher 13, the hopper 14 can be lowered accordingly.
[0013]
In the second invention, the crusher 13, the hopper 14, and the shear in the hopper 14 are conveyed to the machine body 12 including the traveling body 11 to the crusher 13, and the shredder of the grizzly feeder 15 having a sieving function and the crusher 13. And a conveyor 16 for transporting the material sifted by the grizzly feeder 15,
The crusher 13 is a jaw crusher in which the moving teeth 31 and the fixed teeth 32 are V-shaped. The moving teeth 31 are substantially vertical when stopped, and the fixed teeth 32 have an upper end portion perpendicular to a lower end portion. The angle between the moving tooth 31 and the stationary tooth 32 at the time of the stop is obliquely close to the grizzly feeder 15 and ranges from 20 degrees to 25 degrees .
The grizzly feeder 15 includes a grizzly bar 24 having a circular cross-section and having small-diameter portions 24a and 24a at longitudinal ends, and a pair of cross members 41 are spaced between the left and right frame frames 40 of the grizzly feeder 15 in the conveying direction. The brackets 42 are attached to the cross members 41 with bolts 43, and the small-diameter portions 424a of the grizzly ribs 24 are freely loosely fitted into the holes 44 of the brackets 42. Machine.
[0014]
According to the second aspect of the invention, the upper end portion 32a of the fixed tooth 32 of the crusher 13 is lowered, the insertion port 33 between the moving tooth 31 and the fixed tooth 32 is lowered, and the shearing from the insertion port 33 is caused. When the moving tooth 31 is swung, it does not jump out.
Accordingly, the inlet 33 can be lowered without reducing the crushing capacity of the crusher 13, and thus the hopper 14 can be lowered accordingly.
Therefore, when crushing the shear near the face of the tunnel, the loader bucket that throws the shear into the hopper 14 does not hit the top plate of the tunnel, and is suitable as a self-propelled crusher that crushes the shear in the tunnel. Become.
Further, since the grizzly river 24 of the grizzly feeder 15 can be rotated and finely moved, the grizzly river 24 rotates and finely moves when the shear is being conveyed along the grizzly river 24, so that dirt, pebbles, etc. are present between the adjacent grizzly rivers 24. There is no clogging.
Thereby, the grizzly feeder 15 has a sieving function for a long period of time.
[0031]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1, a self-propelled crusher 10 is located near the face 2 of the tunnel 1. In this self-propelled crusher 10, a crusher 13, a hopper 14, a grizzly feeder 15, a conveyor 16, and the like are attached to a machine body 12 having a traveling body 11. A mobile conveyor 17 and a stretching conveyor 18 are sequentially provided in succession to the conveyor 16.
[0032]
In the blasting operation, the shear 3 generated near the face 2 is scooped by the bucket 5 of the loader 4, travels on the loader 4, lifts the bucket 5 to the upper side of the hopper 14, swings the bucket 5 downward and swings the hopper 14. In. The shear thrown into the hopper 14 is conveyed to the crusher 13 by the grizzly feeder 15 and crushed by the crusher 13. The crushed pieces are conveyed outside the tunnel by the conveyor 16, the movable belt conveyor 17, and the stretching belt conveyor 18.
[0033]
Next, the specific structure of the self-propelled crusher 10 will be described.
As shown in FIG. 2, the airframe 12 is longer than the traveling body 11, and an attachment frame 20 is attached to a protruding portion 12 a on one side in the traveling direction. A hopper 14 is attached to the attachment frame 20 with a column 21. A grizzly feeder 15 is attached to the attachment frame 20 via an elastic member 22.
[0034]
The grizzly feeder 15 includes a vibration exciter 23 and a grizzly river 24, transports the shear put into the hopper 14 toward the crusher 13, and earth and sand and small rock fragments fall when passing through the grizzly river 24. The fallen earth and sand and small rock fragments are guided to drop onto the conveyor 16 by an upper chute 25 provided on the grizzly feeder 15 and a lower chute 26 provided on the protruding portion 12a.
[0035]
In this manner, the machine body 12 is protruded to the one side in the traveling direction from the traveling body 11, and the hopper 14 and the grizzly feeder 15 are attached to the projecting portion 12a, whereby the grizzly feeder 15 becomes longer. Further, since the grizzly feeder 15 is high on the crusher 13 side and the hopper 14 side is low and inclined with respect to the horizontal, there is a difference in height between the crusher 13 side and the hopper 14 side without increasing the angle of the grizzly feeder 15 with respect to the horizontal. growing.
[0036]
Therefore, the hopper 14 can be lowered without deteriorating the shear conveyance performance by the grizzly feeder 15.
[0037]
A support leg 27 is detachably or telescopically attached to the protrusion 12a of the machine body 12 so as to be swingable up and down. Since the projecting portion 12a of the airframe 12 can be supported by grounding the support leg 27 during the crushing operation, the airframe 12 does not fall down or shake, and the airframe 12 becomes stable during the crushing operation.
[0038]
Further, since the support leg 27 can be separated from the ground during traveling, the traveling body 11 can travel smoothly.
[0039]
The crusher 13 is attached to an intermediate portion in the running direction of the machine body 12, and has a jaw type in which a moving tooth 31 and a fixed tooth 32 are attached in a V shape to a planar rectangular main body 30 to form an inlet 33 and an outlet 34. It is a crusher. By swinging the moving tooth 31 toward the fixed tooth 32 with an eccentric shaft, the shearing material introduced from the input port 33 is crushed, and the crushed pieces are dropped from the discharge port 34 onto the conveyor 16.
[0040]
The moving tooth 31 is substantially vertical when stopped, and the fixed tooth 32 is inclined with respect to the vertical so that the upper part is closer to the grizzly feeder 15 than the lower part, and is 20 degrees to 25 degrees with respect to the moving tooth 31 when stopped. It is a range.
[0041]
Thus, the upper end portion 32a of the fixed tooth 32 is lowered, and the insertion port 33 is inclined at a large angle so that the position close to the grizzly feeder 15 is lowered with respect to the horizontal. Since the angle is in the range of 20 degrees to 25 degrees, the crushing efficiency does not decrease.
[0042]
In other words, when the angle between the moving tooth 31 and the fixed tooth 32 is larger than 25 degrees, the thrown gear that is thrown out to the outside by the swinging motion of the moving tooth 31 reduces the crushing efficiency.
[0043]
As described above, since the input port 33 of the crusher 13 is inclined at a large angle with respect to the horizontal, the height of input of the shear into the input port 33 is low. As a result, the grizzly feeder 15 is lowered, and the hopper 14 is lowered accordingly.
[0044]
The conveyor 16 is obtained by winding a belt 16b around a frame 16a via a pulley and a guide roller. The frame 16a is connected to the projecting portion 12a of the airframe 12 and the projecting portion 12b on the other side in the traveling direction.
[0045]
A power source, for example, an engine 28, an electric motor 29, or the like is attached to the protruding portion 12b of the airframe 12 that protrudes from the traveling body 11 to the other side in the traveling direction. The traveling body 11 of the self-propelled crusher 10 travels using the engine 28 as a power source, and the crusher 13, the vibrator 23, and the conveyor 16 are driven using the electric motor 29 as a power source.
[0046]
Since it is like this, since the crusher 13 is attached to the intermediate part of the machine body 12 in the running direction, the hopper 14 and the grizzly feeder 15 are attached to the one side of the running direction, and the power source is attached to the other side of the running direction. Stability is improved, and the traveling body 11 attached to an intermediate portion in the traveling direction of the airframe 12 can smoothly travel.
[0047]
In addition, since the electric motor 29 is used as a power source when crushing the shear in the tunnel, exhaust gas or the like is not generated and the working environment is not deteriorated. This allows the self-propelled crusher to be evacuated and moved to the face quickly.
[0048]
That is, the self-propelled crusher is evacuated to a position away from the face during blasting work, and moves close to the face when sliding out, so if the self-propelled crusher can run at high speed, The approaching movement can be done quickly.
[0049]
Next, attachment of the fixed blade 32 of the crusher 13 will be described.
As shown in FIGS. 3A and 3B, the fixed teeth 32 can be directly attached to the one side frame 35 of the main body 30 or can be attached via a spacer 36.
[0050]
If the fixed tooth 32 is directly attached to the one side frame 35, the distance between the fixed tooth 32 and the moving tooth 31 is increased and the distance between the inlet 33 and the outlet 34 is increased. The crushing operation speed of the machine 13 is increased.
[0051]
Further, if the fixed teeth 32 are attached to the one side frame 35 via the spacers 36, the distance between the fixed teeth 32 and the moving teeth 31 is reduced, and the distance between the inlet 33 and the outlet 34 is reduced. The speed is slower, but the smallest pieces are smaller.
[0052]
Thus, when crushing the shear generated by the blasting operation in the tunnel, the fixed tooth 32 is directly attached to the one side frame 35 to increase the crushing operation speed, thereby improving the efficiency of conveying the shear. You can
[0053]
That is, since the shear conveyed outside the tunnel is disposed and reused after being subjected to secondary processing without being disposed of or reused, it is not necessary to crush it small by the crusher 13. Therefore, the fixed tooth 32 is attached as described above, and the size of the minimum crushed piece is set to about 1/3 of the width of the conveyor 16 to increase the crushing work speed, thereby improving the shearing work efficiency.
[0054]
Moreover, since it is necessary to make the minimum crushed piece small when crushing at a crushed stone site or the like, the fixed tooth 32 is attached as shown in FIG. 3B to make the crushed piece small.
[0055]
Next, the grizzly river 24 will be described.
A plurality of grizzly rivers 24 are arranged side by side in the form of comb teeth, but earth and sand, pebbles and the like may be clogged between the adjacent grizzly rivers 24 and the screening function may be lost.
[0056]
Therefore, as shown in FIGS. 4 and 5, the grizzly river 24 is formed into a shape having a circular cross section and having small diameter portions 24 a and 24 a at both ends in the longitudinal direction. A pair of cross members 41 are connected between the left and right frame frames 40 of the grizzly feeder 15 at intervals in the transport direction, and a bracket 42 is attached to the cross member 41 with bolts 43, and a small-diameter portion 24a is attached to the hole 44 of the bracket 42. Is loosely fitted.
[0057]
In this way, since the grizzly river 24 rotates and moves slightly in the radial direction, it is possible to prevent clogging of earth and sand and pebbles between the adjacent grizzly rivers 24.
[0058]
Further, the grizzly feeder 15 vibrates the grizzly river 24 and sequentially conveys the shear along the grizzly river 24 by a predetermined pitch. Therefore, if the angle of the grizzly river 24 with respect to the horizontal is increased, the shear slips down by its own weight and cannot be conveyed.
[0059]
Therefore, as shown in FIG. 6, the upper surface 24 b of the grizzly river 24 is formed in a stepped shape with a plurality of stepped portions 45 facing the transport direction. In this way, since the slip does not hit the stepped portion 45 and slides under its own weight, the angle α with respect to the horizontal can be increased. The interval in the transport direction of the stepped portion 45 is preferably the same as or slightly smaller than the transport pitch described above.
[0060]
By doing in this way, since the angle with respect to the horizontal of the grizzly feeder 15 can be enlarged, when the height by the side of the crusher 13 is made the same, the height by the side of the hopper 14 becomes remarkably low, and the hopper 14 can be made low enough.
[0061]
Next, a second embodiment of the present invention will be described with reference to FIG. The first feeder 15-1 and the second grizzly feeder 15-2 are used as the grizzly feeder 15. The first feeder 15-1 is positioned below the hopper 14 and vibrates with the first vibrator 23-1, thereby conveying the shear to the second grizzly feeder 15-2. The 2nd grizzly feeder 15-2 is equipped with the grizzly river 24, and conveys it toward the crushing machine 13, sieving a shear by vibrating with the 2nd shaker 23-2.
[0062]
The first shaker 23-1 applies a vibration F ₁ in a direction of approximately 45 degrees, and the horizontal component F ₁ -H of the vibration F ₁ is increased to increase the shearing ability. Yes. The second vibrator 23-2 imparts a vibration F ₂ in a direction of approximately 60 degrees, and the vertical component F ₂ -V of the vibration F ₂ is increased to increase the screening ability. The magnitude of the vibration F ₂ of the _second shaker 23-2 is larger than the vibration F _{1 of the first} shaker 23-1, and the horizontal component F ₂ -H is the first shaker 23-1. 23-1 is the same as the horizontal component F ₁ -H.
[0063]
Since it is like this, even if it makes the grizzly feeder 15 long, a shear can be conveyed reliably and a shear can be fully screened.
[0064]
Next, a third embodiment of the present invention will be described with reference to FIG.
The hopper 14 is attached to the projecting portion 12 a of the machine body 12 with a support 50, and the vibration sieve machine 51 is attached to the lower part of the hopper 14. This vibration sieve machine 51 is obtained by attaching a screen 54 and a vibration exciter 55 to a housing 53 attached to a projecting portion 12 a of an airframe 12 via an elastic member 52. The shear thrown into the hopper 14 falls on the screen 54 and is screened, earth and sand, pebbles, etc. that have passed through the screen 54 fall on the conveyor 16, and large shear that does not pass through the screen 54 moves downward along the screen 54. Fall.
[0065]
An apron feeder 60 is attached to the protrusion 12 a of the body 12. The apron feeder 60 is provided with an endless band 62 on a frame 61 so as to be rotatable. A large number of shear support portions 63 such as projecting pieces and buckets are provided on the endless band 62 at intervals.
[0066]
One end of the apron feeder 60 is located above the inlet 33 of the crusher 13, and the other end is located below the discharge end of the screen 54 of the vibration sieve 51. The apron feeder 60 is inclined with respect to the horizontal so that one end is high and the other end is low.
[0067]
Since it is like this, the slip which fell along the screen 54 of the vibration sieving machine 51 is conveyed to the inlet 33 of the crusher 13 by the apron feeder 60.
[0068]
In addition, since the apron feeder 60 is inclined with respect to the horizontal, even if the discharge part of the vibrating screen 51 (the end of the screen 54) is lower than the inlet 33 of the crusher 13, the apron feeder 60 is discharged from the vibrating screen 51. The shear can be thrown into the crusher 13. Thereby, the hopper 14 can be lowered.
[Brief description of the drawings]
FIG. 1 is an explanatory cross-sectional view showing a state of conveying a shear in a tunnel.
FIG. 2 is a partially broken front view of the self-propelled crusher showing the first embodiment of the present invention.
FIG. 3 is a sectional view showing a fixed tooth mounting structure of a crusher.
FIG. 4 is a plan view for explaining mounting of a grizzly river.
5 is a cross-sectional view taken along the line AA in FIG.
FIG. 6 is a front view illustrating the shape of a grizzly river.
FIG. 7 is a partially broken front view of a self-propelled crusher showing a second embodiment of the present invention.
FIG. 8 is a partially broken front view of a self-propelled crusher showing a third embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Tunnel 2 ... Face 3 ... Slip 4 ... Loader 5 ... Bucket 10 ... Self-propelled crusher 11 ... Running body 12 ... Airframe 12a ... Projection part 12b ... Projection part 13 ... Crusher 14 ... Hopper 15 ... Grizzly feeder 15- DESCRIPTION OF SYMBOLS 1 ... 1st feeder 15-2 ... 2nd grizzly feeder 16 ... Conveyor 16a ... Frame 16b ... Belt 17 ... Mobile belt conveyor 18 ... Stretch belt conveyor 20 ... Mounting frame 21 ... Strut 22 ... Elastic member 23 ... Excitation Machine 23-1 ... first vibrator 23-2 ... second vibrator 24 ... grid river 24a ... small diameter part 24b ... upper surface 25 ... upper chute 26 ... lower chute 27 ... support leg 28 ... engine 29 ... electric motor DESCRIPTION OF SYMBOLS 30 ... Main body 31 ... Moving tooth 32 ... Fixed tooth 32a ... Upper end part 33 ... Input port 34 ... Discharge port 35 ... One side frame 36 ... Spacer 40 ... Frame frame 41 ... Cross member 42 Bracket 43 ... Bolt 44 ... Hole 45 ... Step 50 ... Strut 51 ... Vibrating sieve 52 ... Elastic member 53 ... Housing 54 ... Screen 55 ... Exciter 60 ... Apron feeder 61 ... Frame 62 ... Endless belt 63 ... Shear support Department.

Claims (2)

The crusher 13, the hopper 14, and the shear in the hopper 14 are transported to the machine body 12 including the traveling body 11 to the crusher 13, and are screened by the grizzly feeder 15 having a screening function, the shredded pieces of the crusher 13, and the grizzly feeder 15. A conveyor 16 for conveying
The crusher 13 is a jaw crusher in which the moving teeth 31 and the fixed teeth 32 are V-shaped. The moving teeth 31 are substantially vertical when stopped, and the fixed teeth 32 have an upper end portion perpendicular to a lower end portion. The angle between the moving tooth 31 and the stationary tooth 32 at the time of the stop is obliquely close to the grizzly feeder 15 and ranges from 20 degrees to 25 degrees .
A self-propelled crusher characterized in that the grizzly river 24 of the grizzly feeder 15 has a stepped shape with an upper surface 24b directed in the conveying direction and a plurality of stepped portions 45. The crusher 13, the hopper 14, and the shear in the hopper 14 are transported to the machine body 12 including the traveling body 11 to the crusher 13, and are screened by the grizzly feeder 15 having a screening function, the shredded pieces of the crusher 13, and the grizzly feeder 15. A conveyor 16 for conveying
The crusher 13 is a jaw crusher in which the moving teeth 31 and the fixed teeth 32 are V-shaped. The moving teeth 31 are substantially vertical when stopped, and the fixed teeth 32 have an upper end portion perpendicular to a lower end portion. The angle between the moving tooth 31 and the stationary tooth 32 at the time of the stop is obliquely close to the grizzly feeder 15 and ranges from 20 degrees to 25 degrees .
The grizzly feeder 15 includes a grizzly bar 24 having a circular cross-section and having small-diameter portions 24a and 24a at longitudinal ends, and a pair of cross members 41 are spaced between the left and right frame frames 40 of the grizzly feeder 15 in the conveying direction. The brackets 42 are attached to the cross members 41 with bolts 43, and the small-diameter portions 424a of the grizzly ribs 24 are freely loosely fitted into the holes 44 of the brackets 42. Machine.

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