JP2007307481A - Self-propelling type crushing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-propelling type crushing machine easy to move to a monitoring deck of the neighboring crushing machine. <P>SOLUTION: The self-propelled type crushing machine is provided with a freely self-propelled running object 1, a crushing means 2 installed on the running object, a carrying-in means 3 carrying an object to be crushed in the crushing means, a taking out means 5 taking out the crushed object crushed by the crushing means, and the monitoring deck 12 to monitor the crushing means and the carrying-in means. A plurality of the self-propelling type crushing machines are parallelly arranged, and when a crushing operation is carried out, a connecting passage 14 connecting travellably the betweenness of the monitoring decks of the neighboring self-propelling type crushing machine is provided in the vicinity of the monitoring deck. Since the movement to the monitoring deck of the neighboring crushing machine becomes possible without getting out the monitoring deck, a prompt action to an emergency stop or the like of the crushing means can be carried out, and further, since a simultaneous monitoring of a plurality of the crushing machines is possible with lower numbers, the reduction in the number of workers required for the monitoring can be aimed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a self-propelled crushing machine that efficiently crushes objects to be crushed such as concrete blocks.

2. Description of the Related Art A self-propelled crushing machine is known as a processing machine that processes building waste materials such as concrete lumps that have been generated in large amounts at a demolition site such as a conventional building.
The self-propelled crushing machine includes a hopper that puts a material to be crushed on a self-propelled traveling body, a carry-in conveyor that carries the material to be crushed into a crusher or the like, and a crushing means. It is comprised from the carrying-out conveyor etc. which carry out the to-be-crushed material.
The self-propelled crushing machine configured as described above is carried into a demolition site such as a building and then crushed by a crushing means into a hopper to be crushed by a construction machine such as a hydraulic excavator and recycled. Objects to be crushed, such as concrete lumps generated during construction, include metals such as reinforcing bars and piping.
For this reason, the self-propelled crushing machine is also equipped with the function of separating metals such as reinforcing bars from the crushed material to be crushed and discharging it from the outlet, but the processing status is monitored during the processing of the crushed material. Since it is necessary, a conventional self-propelled crushing machine is provided with a passage through which an operator passes, for example, around a hopper (for example, Patent Document 1).

The self-propelled construction waste crusher described in Patent Document 1 has a main vehicle body equipped with a crusher on a self-propelled crawler traveling body, and a hopper that inputs construction waste material to the upper part of the main vehicle body Is provided.
One side port opening is provided in the vehicle body deck portion on both the left and right sides of the main vehicle body, and the other side passage is provided on the opposite side of the one passage. A hoistway is formed in the passage toward the vicinity of the hopper.
With the above configuration, when the worker on the left and right sides of the crusher wants to ascend to the vicinity of the hopper, he can walk from the vehicle body deck part to the vicinity of the vehicle crossing passage and reach the vicinity of the hopper from the hoistway. Thus, it is possible to easily reach the vicinity of the hopper.

On the other hand, in demolition sites such as old buildings, many buildings are built in the surrounding area, and the road for carrying the self-propelled crushing machine is narrow, and it is not possible to secure a large space for processing. In many cases, the crushing machine cannot be carried in.
In addition, when crushing objects such as concrete blocks, noise, vibration, dust, etc. are generated. Therefore, in urban areas where buildings are built, the surroundings are surrounded by fences, etc. Although measures are taken to minimize the amount of processing, a large-scale crushing machine cannot be carried in and a large amount of processing cannot be performed in a short period of time.
In order to solve such a problem, conventionally, a plurality of small crushing machines are introduced to increase the processing capacity, thereby shortening the work period.
That is, by installing a plurality of crushing machines as described in Patent Document 1 in parallel, throwing the objects to be shredded into a plurality of crushing machines by one construction machine, and processing the objects to be shredded in parallel The construction period is shortened.
JP-A-8-158666

However, there are the following problems when a plurality of crushing machines are carried in parallel at the processing site of the object to be crushed.
Objects to be crushed such as building waste materials processed by the crushing machine contain foreign objects such as reinforcing bars and valves used in piping. When foreign objects such as valves are brought into the crushing means, the crushing means An overload may occur and the crushing means may stop urgently.

For this reason, an operator monitors the inside of the hopper from the passage around the hopper to prevent foreign matters from being carried into the crushing means, but one operator monitors a plurality of crushing machines at the same time. In many cases, foreign matter is carried into the crushing means.
When a foreign object is brought into the crushing means and the crushing means is stopped due to an overload, the worker descends into the hopper and artificially removes the foreign object. For example, it is adjacent to the crushing machine that was being monitored. When a crushing machine carries in foreign matter or an emergency stop occurs, in a conventional crushing machine as described in Patent Document 1, the crushing machine that has been monitored is moved down to the adjacent crushing machine and moved into the hopper. The work to get off and remove foreign objects.
However, the passages around the hopper are usually at a height of about 2m from the ground, so you have to go up and down the ladder many times to move from the crushing machine you were monitoring to the adjacent crushing machine, Since the movement takes time and the processing efficiency is lowered, the worker is fatigued early, so that the work efficiency is also lowered.
In addition, it is possible to install crushing machines in parallel so that they can be easily transferred to the passage of adjacent crushing machines, but this method makes it impossible for workers to pass between crushing machines. There is a problem that hinders maintenance.
The present invention has been made to remedy such a problem, and an object of the present invention is to provide a self-propelled crushing machine in which an adjacent crushing machine can be easily moved to a monitoring deck.

  The self-propelled crushing machine of the present invention is a self-propelled traveling body, a crushing means installed on the traveling body, a carrying-in means for carrying a material to be crushed into the crushing means, and a material to be crushed by the crushing means A self-propelled crushing machine equipped with unloading means for unloading objects and a monitoring deck for monitoring crushing means and carrying-in means, when crushing work by arranging a plurality of self-propelled crushing machines in parallel In addition, a crossing passage that connects between the monitoring decks of adjacent self-propelled crushing machines is installed in the vicinity of the monitoring deck.

With the above configuration, when a single crushing machine is stopped due to a crushing means, for example, when one worker is monitoring a plurality of crushing machines, the monitoring decks of each crushing machine are connected. Because of the crossing path, it is possible to move between monitoring decks without getting off the monitoring deck, so it is possible to quickly respond to an emergency stop of the crushing means, etc., thereby minimizing a reduction in processing efficiency due to an emergency stop etc. In addition, since a plurality of crushing machines can be monitored simultaneously with a small number of people, the number of workers required for monitoring can be reduced.
In addition, since it is not necessary for the operator to move the monitoring deck repeatedly by getting on and off multiple crushing machines, it is possible to prevent the monitoring ability from deteriorating due to early fatigue of the operator, and the crushing means may break down or be damaged by foreign substances. Accidents such as accidents can be prevented in advance.

  The self-propelled crushing machine of the present invention includes a passage main body, one end side of which is hinged near the monitoring deck by a hinge, and the monitoring of the adjacent self-propelled crushing machine provided on the other end side of the passage main body. It comprises locking means that can be engaged and disengaged in the vicinity of the deck, and handrails that are foldable upright on both sides of the passage main body.

  With the above configuration, when the passage is not used, the passage can be stored in a plane along the side surface of the crushing machine, so that the passage does not interfere with the work, and when the passage is used, Since handrails can be erected on both sides of the passage main body, it is possible to safely move between the monitoring decks using the transition passage.

  In the self-propelled crushing machine of the present invention, a handrail is provided with a vertical beam that also serves as a step that allows the user to get on and off the monitoring deck when the passage is stored.

  With the above configuration, the monitoring deck can be installed from either side of the crushing machine using a vertical rail that also serves as a step by installing the storage position of the transit passage on the opposite side of the side surface on which the ladder that gets on and off the monitoring deck is provided. Because it is possible to get on and off, it is easier to get on and off the surveillance deck.

  The self-propelled crushing machine of the present invention is a self-propelled traveling body, a crushing means installed on the traveling body, a carrying-in means for carrying a material to be crushed into the crushing means, and a material to be crushed by the crushing means A self-propelled crushing machine equipped with unloading means for unloading objects and a monitoring deck for monitoring crushing means and carrying-in means, when crushing work by arranging a plurality of self-propelled crushing machines in parallel In addition, there are provided a passageway that connects the monitoring decks of the adjacent self-propelled crushing machines so that they can pass through, and the passageway has one end side hinged near the monitoring deck by a hinge and the other end of the passageway body. It comprises a locking means provided on the side and detachable near the monitoring deck of the adjacent self-propelled crushing machine, and handrails standing upright on both sides of the passage main body.

With the above configuration, when a single crushing machine is stopped due to a crushing means, for example, when one worker is monitoring a plurality of crushing machines, the monitoring decks of each crushing machine are connected. Because of the crossing path, it is possible to move between monitoring decks without getting off the monitoring deck, so it is possible to quickly respond to an emergency stop of the crushing means, etc., thereby minimizing a reduction in processing efficiency due to an emergency stop etc. In addition, since a plurality of crushing machines can be monitored simultaneously with a small number of people, the number of workers required for monitoring can be reduced.
In addition, since it is not necessary for the operator to move the monitoring deck repeatedly by getting on and off multiple crushing machines, it is possible to prevent the monitoring ability from deteriorating due to early fatigue of the operator, and the crushing means may break down or be damaged by foreign substances. Accidents such as accidents can be prevented in advance.
Furthermore, since the passage can be stored in a plane along the side of the crushing machine when the passage is not in use, the passage does not interfere with the work. Since handrails can be set up on both sides, it is possible to safely move between monitoring decks using a transfer passage, and the storage position of the transfer passage is on the opposite side of the side where the ladder that gets on and off the monitoring deck is installed Since it can be boarded / exited to the monitoring deck from either side of the crushing machine, boarding / exiting to the monitoring deck is further facilitated.

  According to the self-propelled crushing machine of the present invention, it is possible to move to the monitoring deck of the adjacent crushing machine without getting off the monitoring deck, so that it is possible to quickly cope with an emergency stop of the crushing means, etc. As a result, a decrease in processing efficiency due to an emergency stop or the like can be minimized, and a plurality of crushing machines can be monitored simultaneously by a smaller number of people, so that the number of workers required for monitoring can be reduced.

Embodiments of the present invention will be described in detail with reference to the drawings.
1 is a plan view of a self-propelled crushing machine, FIG. 2 is a side view of the same, FIG. 3 is a rear view of the same, FIG. 4 is a side view of the vicinity of a passage, FIG. 5 is a plan view of the same, and FIG. FIG. 7 is a front view of the state where the crossing passage is folded, and FIG. 8 is an explanatory view of the operation during the crushing operation.
FIG. 1 shows a state in which two self-propelled crushing machines are arranged in parallel. Each self-propelled crushing machine includes a traveling body 1, a crushing means 2 installed on the traveling body 1, and a crushing means 2. The whole is comprised by the carrying-in means 3 which carries in a to-be-crushed object, the drive means 4 which drives the crushing means 2, and the carrying-out means 5 which carries out the to-be-crushed object crushed by the crushing means 2.
The traveling body 1 has a track frame 7 composed of a center frame 7a and side frames 7b provided on both sides thereof, and an idler 8 is supported on one end side of each side frame 7b so as to be movable back and forth. A sprocket 10 is provided at the other end of the side frame 7b. The sprocket 10 is rotationally driven by a travel motor 9 made of a hydraulic motor.
An endless crawler belt 11 is provided between the idler 8 and the sprocket 10, and the traveling body 1 can be moved forward or backward by rotating the crawler belt 11 with the sprocket 10. By changing the crawler belt 11 separately, the direction can be changed.

The crushing means 2 installed on the center frame 7a of the track frame 7 crushes objects to be crushed such as building waste generated in large quantities when a building or the like is demolished into a reusable size. For example, it is constituted by a hydraulic crusher (not shown).
The hydraulic crusher is composed of a fixed blade and a movable blade (both not shown) reciprocated by hydraulic pressure, and the object to be crushed inserted between the fixed blade and the movable blade has a predetermined size. The entire crushing means 2 is covered with the case 2a to prevent the object to be crushed from scattering to the surroundings, and at the same time, the noise generated during crushing is leaked to the outside. Reduced.
The carry-in means 3 installed on the material to be crushed side of the crushing means 2 is formed by a hopper 3a having an open top surface and a grizzly feeder 3b provided at the bottom of the hopper 3a, and is a construction machine such as a hydraulic excavator. Thus, the grizzly feeder 3b carries the object to be crushed put into the hopper 3a into the carry-in port of the crushing means 2.

Driving means 4 and unloading means 5 are installed on the discharge port side of the crushing means 2.
The drive means 4 generates hydraulic pressure as power for driving the crushing means 2, the carry-in means 3, the carry-out means 5 and the like, and has an engine chamber 4b surrounded by a bonnet 4a.
A power engine is installed in the engine chamber 4b, and a hydraulic motor (both not shown) is driven by the power engine. The hydraulic pressure generated by the hydraulic motor is supplied to a hydraulic pipe (not shown). To the traveling motor 9 provided in the traveling body 1, the hydraulic motor provided in the crushing means 2, the hydraulic motor provided in the carry-in / out means 3 and 5, and the like.
The carry-out means 5 installed on the discharge port side of the crushing means 2 is composed of a belt conveyor 5 a installed below the drive means 5, and one end side is pivotally attached to the center frame 7 a of the track frame 7.
The other end side of the belt conveyor 5a is supported by the support means 6 in an inclined state so as to become higher in order, and the object to be crushed discharged by the crushing means 2 is loaded on a transport vehicle (not shown) such as a truck. Or pile up on the ground of the work site.

On the other hand, a monitoring deck 12 is installed above the crushing means 2.
The monitoring deck 12 is used to monitor the introduction of foreign matter into the hopper 3a and to monitor the crushing status of the crushing means 2, etc. As shown in FIG. There is a passage 12a formed in an approximately L shape over the side and the middle.
One end side of the passage 12a reaches the vicinity of the hopper 3a, the tip portion is bent inward to form a landing 12b, and an operator can monitor the inside of the hopper 3a by standing on the landing 12b of the passage 12a. It is like that.
The middle portion of the passage 12a is bent at a substantially right angle between the crushing means 2 and the driving means 4, the other end side reaches the left side surface of the crushing means 2, the tip portion is bent rearward, and the landing 12c Is formed.
The passage 12a of the monitoring deck 12 is installed at a height of about 2 m above the ground, and a ladder 13 is provided at the landing 12c provided at the left end of the passage 12 in order to get on and off the monitoring deck 12 from the ground. It has been.
As shown in FIG. 3, the ladder 13 has an upper end fixed to a bracket 2 b protruding from the side surface of the case 2 a of the crushing means 2, and the lower end of the ladder 13 reaches the vicinity of the upper surface 11 of the crawler belt 11. It is possible to easily transfer to the ladder 13 by placing the foot.

On the other hand, each self-propelled crushing machine is provided with a cross passage 14 so that it can easily move between the monitoring decks 12 of the crushing machines installed in parallel.
The crossing passages 14 are respectively installed on the side surface opposite to the ladder 13 and are configured as shown in FIGS. 4 to 7.
The passage main body 14a of the crossing passage 14 is formed of, for example, a check steel plate that is formed to have substantially the same width as the passage 12a of the monitoring deck 12 or slightly narrower than that, and has an anti-slip formed on the upper surface.
A frame body 14b is provided around the passage main body 14a, and the rigidity of the whole passage main body 14a is increased. The length of the passage main body 14a is passed by an operator between crushing machines arranged in parallel. For example, the length of the passage main body 14a, that is, one end side of the passage main body 14a, that is, the passage main body 14a as shown in FIG. An end portion which becomes the upper end side when folded along the side surface is hinged to the side surface of the monitoring deck 12 by a hinge 15.

The upper surface of the passage main body 14a is set at an attachment position so as to be substantially the same height as the passage 12a of the monitoring deck 12 when the passage main body 14a is set to a substantially horizontal position in use. Locking means 16 is provided on the side.
The locking means 16 is formed by a pair of hooks 16 a that can be engaged with a step 13 a made of a round bar provided at the uppermost stage of the ladder 13.
The hook 16a is formed of a plate body, and a base end portion is fixed to a frame body 14b provided on the other end side of the passage main body 14a by means such as welding.
A semicircular cutout 16b larger than the diameter of the step 13a is formed on the lower edge of the hook 16a. Even if there is some variation in the spacing between the crushing machines arranged side by side, the hook 16a is connected to the step 13a. It can be reliably engaged from above.
Foldable handrails 17 are provided on both sides of the passage main body 14a.
The handrail 17 includes a vertical beam 17b and a horizontal beam 17c provided in a lattice shape within a substantially inverted U-shaped rail portion 17a formed by a round bar, a pipe, or the like, and a lower portion of the rail portion 17a is a passage main body 14a by a hinge 18. It is hinged to the frame 14b provided on both sides.

The lower portion of the vertical beam 17b is formed by a plate material 17d, and the interval between the plate materials 17d is substantially the same as the step 13a of the ladder 13 so that a part can be used as a step when the transfer passage 14 is stored. In addition, serrated anti-skids 17e are formed on the side edges so as not to slip when a foot is put on each plate member 17d.
Each handrail 17 can be stored along the side surface of the crushing means 2 as shown in FIG. 7 by being folded in one direction around the hinge 18, for example, the hopper 3 a side. Is provided with a locking means 20 for locking the handrail 17 of the stored passageway 14, and a fixing means 21 for fixing the handrail 17 erected at the use position is provided at the use position of the passageway 14. Yes.
As shown in FIG. 7, the locking means 20 has a protruding piece 20a protruding from the side surface of the case 2a of the crushing means 2 and a slit 20b fixed to the rail portion 17a of the handrail 17 and into which the protruding piece 20a is fitted. The receiving piece 20c has a lock pin 20d that locks the receiving piece 20c by being inserted into a pin hole (not shown) drilled at the tip of the protruding piece 20a.

As shown in FIG. 6, the fixing means 21 for fixing the handrail 17 includes a pair of fixed pieces 21b pivotally attached to the handrail 22 provided at one end side in the passage 12a of the monitoring deck 12 by a pin 21a, and the crossing passage 14 side. The stopper pin 21d is provided on the handrail 17 and locks the fixed piece 21b in a substantially horizontal position.
The pair of fixed pieces 21b is connected by a connecting piece 21c at a position slightly closer to the front end side than the intermediate portion, and between the front ends of the respective fixed pieces 21b, as shown by the solid line in FIG. By fitting the 17 rail portions 17a, the handrail 17 can be fixed to the use position in the standing state.
On the other hand, the handrail 22 on the monitoring deck 12 side is erected on both sides of the passage 12a as shown in FIGS. 1 and 2, and prevents the operator passing through the passage 12a from falling down. An operation means 24 is installed on the drive means 4 side of the passage 12a installed so as to cross between the drive means 4.
The operation means 24 controls the traveling of the crushing machine, controls the operations of the crushing means 2, the carry-in means 3, the drive means 4 and the carry-out means 5, and a plurality of operation levers for controlling the travel of the traveling body 1. 24a and an operation panel 24b provided with a plurality of operation button groups (not shown) for controlling operations of the crushing means 2, the carrying-in means 3, the driving means 4 and the carrying-out means 5 and the like.

Next, the operation of the thus configured self-propelled crushing machine will be described.
When processing a lot of crushed objects such as building scrap machines generated at the demolition site of a building or the like, a plurality of, for example, two self-propelled crushing machines are brought into the processing site, as shown in FIG. In this case, the distance between the crushing machines is set to a distance that does not hinder the passage and maintenance work by the operator during maintenance. The interval is set to be approximately the same as the length of.
When the crushing machine is arranged as described above, the lock pin 20d of the locking means 20 that locks the handrail 17 of the crossing passage 14 installed on the opposing surface of each crushing machine is pulled out to lock the handrail 17 and the passage main body 14a. Is released.

Next, the passage main body 14a is rotated to the horizontal position around the hinge 15, and at this time, when the hook 16a of the locking means 16 provided at the tip of the passage main body 14a interferes with the ladder 13, one of the crushing machines Is moved to the front and back, and the passage main body 14a is set to a horizontal position at a position where it does not interfere, or the passage main body 14a is unlocked before two crushing machines are lined up and lifted to a position where it does not interfere with the ladder 13, Each crushing machine may be installed in parallel.
When the passage main body 14a of the crossing passage 14 is set in a horizontal position and the hook 16a of the locking means 16 is locked to the step 13a at the top of the ladder 13 as shown in FIG. 4, the handrails 17 on both sides of the passage main body 14a are substantially vertical. The handrail 17 is fixed to the use position by the fixing means 21. In this state, as shown in FIG. 8, between the monitoring decks 12 of the crushing machines installed in parallel with each other by the passage 12a, It will be in the connected state and can move freely between the monitoring decks 12 of each crushing machine.

Next, when processing the crushed material, the operation of each crushing machine is started, and the crushed material is put into the hopper 3a of each crushing machine by the construction machine 25 such as a hydraulic excavator. The crushed material is carried into the crushing means 2 by the grizzly feeder 3b of the carry-in means 3, and after being crushed to a predetermined size by the crushing means 2, it is carried out from the crushing means 4 by the belt conveyor 5a of the carry-out means 5. It is loaded on a transport vehicle such as a truck (not shown) or piled on the ground of the work site.
On the other hand, during the crushing process of the object to be crushed by the crushing machine, whether or not foreign matters are mixed in the object to be crushed and put into the hopper 3a from the monitoring deck 12, or whether the crushing means 2 is operating normally. However, since the passage 12a of the monitoring deck 12 is connected by the crossing passage 14, it can freely move between the monitoring decks 12 of the two crushing machines.
Thereby, a small number of people, for example, one worker can monitor two crushing machines at the same time, and the number of workers required for monitoring can be reduced.

Also, when the crushing means 2 of the second crushing machine is stopped due to an overload due to the encroachment of foreign matter during the monitoring of the first crushing machine, conventionally, from the monitoring deck 12 of the first crushing machine Although it was necessary to get off and get on the monitoring deck 12 of the second crushing machine to remove the cause of the emergency stop, in this embodiment, the crossing path 14 is connected between the monitoring decks 12 of each crushing machine. Therefore, it is possible to move between the monitoring decks 12 without getting off the monitoring deck 12 of the crushing machine.
As a result, it is possible to quickly cope with an emergency stop or the like of the crushing means 2, so that a reduction in processing efficiency due to an emergency stop or the like can be minimized.
Moreover, since it is not necessary for the operator to repeatedly get on and off the two crushing machines, it is possible to prevent the monitoring ability from being deteriorated due to the fatigue of the worker at an early stage, and the crushing means 2 may break down or be damaged by foreign matter. Accidents can also be prevented.

On the other hand, when the transfer passage 14 is not used, it is stored along the side surface of the crushing means 2 as shown in FIG. 7 and locked by the locking means 20 so that the handrail 17 does not rise up carelessly when the transfer passage 14 is stored. However, at this time, the vertical rail 17b of the handrail 17 is turned sideways, so that the vertical rail 17b can be used as a step when getting on and off the monitoring deck 12.
Since the storage position of the crossing passage 14 is on the side opposite to the side surface on which the ladder 13 is provided, the plate material 17d forming the lower part of the vertical rail 17b is used as a step so that the monitoring deck 12 can be accessed from either side of the crushing machine. It becomes possible to get on and off, and to get on and off the monitoring deck 12 easily.

It is a top view of the self-propelled crushing machine used as an embodiment of the invention. It is a side view of the self-propelled crushing machine which becomes embodiment of this invention. It is a rear view of the self-propelled crushing machine which becomes embodiment of this invention. It is a side view of the vicinity of the transition passage provided in the self-propelled crushing machine which becomes embodiment of this invention. It is a top view of the transit passage vicinity provided in the self-propelled crushing machine which becomes embodiment of this invention. It is an enlarged view in A circle of FIG. It is a front view of the state which folded the transfer path provided in the self-propelled crushing machine which becomes embodiment of this invention. It is operation | movement explanatory drawing of the self-propelled crushing machine which becomes embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling body 2 Crushing means 3 Carry-in means 5 Carry-out means 12 Monitoring deck 14 Transition passage 14a Passage body 15 Hinge 16 Locking means 17 Handrail 17b Vertical rail

Claims (4)

  A self-propelled traveling body, a crushing means installed on the traveling body, a carrying-in means for carrying a material to be crushed into the crushing means, and a carrying-out means for carrying out the material to be crushed by the crushing means , A self-propelled crushing machine provided with a monitoring deck for monitoring the crushing means and the carrying-in means, and a plurality of the self-propelled crushing machines are arranged in parallel and are adjacent when performing crushing work. A self-propelled crushing machine characterized in that a crossing passage that connects the monitoring decks of the self-propelled crushing machine so as to pass therethrough is installed in the vicinity of the monitoring deck.   The crossing passage is engaged with and disengaged in the vicinity of the monitoring deck of the adjacent self-propelled crushing machine provided on the other end side of the passage main body with a passage body hinged at one end side near the monitoring deck by a hinge. The self-propelled crushing machine according to claim 1, wherein the self-propelled crushing machine is composed of a freely engaging means and a handrail erected on both sides of the passage main body.   The self-propelled crushing machine according to claim 1 or 2, wherein the handrail is provided with a vertical rail that also serves as a step that enables the user to get on and off the monitoring deck when the transfer passage is stored. A self-propelled traveling body, a crushing means installed on the traveling body, a carrying-in means for carrying a material to be crushed into the crushing means, and a carrying-out means for carrying out the material to be crushed by the crushing means , A self-propelled crushing machine provided with a monitoring deck for monitoring the crushing means and the carrying-in means, and a plurality of the self-propelled crushing machines are arranged in parallel and are adjacent when performing crushing work. A crossing passage is provided to connect between the monitoring decks of the self-propelled crushing machine so as to be able to pass therethrough, and the crossing passage has a passage main body hinged near the monitoring deck by a hinge, It comprises a locking means provided on the end side and detachable near the monitoring deck of the adjacent self-propelled crushing machine, and handrails that are foldable upright on both sides of the passage body. Self-propelled crushing machine

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