JP5248261B2 - Self-propelled crusher - Google Patents

Description

  The present invention relates to a self-propelled crusher that generates a small reusable material by crushing crushing objects such as rocks and building waste, and more particularly, a self-propelled crusher equipped with an electric motor as a drive source. About.

  In general, in tunnel construction sites, a self-propelled crusher equipped with a crusher such as a jaw crusher is preferably used to crush a large amount of rock generated by blasting and excavation work into small pieces and discharge them to the outside of the tunnel. It has been.

  This self-propelled crusher is usually a self-propelled traveling body, a main body frame provided on the traveling body, extending in the front and rear directions, and provided on one side in the length direction of the main body frame. A hopper into which an object is charged, a power unit provided on the other side in the longitudinal direction of the main body frame, a crusher provided between the power unit and the hopper, and a crushed material crushed by the crusher And a discharge conveyor that discharges the product.

  And when crushing rocks etc. in the tunnel, a self-propelled crusher equipped with a power unit using an electric motor as a power source is preferably used so that harmful exhaust gas is not discharged into the tunnel. The self-propelled crusher has a configuration in which a hydraulic pump is driven by, for example, an electric motor, and hydraulic equipment such as a crusher is driven by pressure oil discharged from the hydraulic pump (see, for example, Patent Document 1).

JP 2004-223319 A

  By the way, a self-propelled crusher equipped with an electric motor as a power source can cope with the case where the frequency of the commercial power source in the area to be used is either 50 Hz or 60 Hz, and the size of the rock to be crushed. It is necessary to mount an inverter control panel for controlling the voltage supplied to the electric motor and adjusting the rotation speed appropriately so that the power of the crusher can be adjusted appropriately according to the sheath hardness.

  However, since the inverter control panel is composed of a large number of electronic devices, if dust generated from the crusher by crushing crushing objects such as rocks enters the inverter control panel, the inverter control panel There is a problem that reliability of inverter control is lowered.

  Moreover, since the crusher which crushes a rock etc. requires big motive power, the output of the electric motor as a motive power source also increases. As a result, the inverter control panel for controlling the drive voltage of the electric motor is also increased in size and weight, so that it is necessary to stably support the inverter control panel which is a heavy object.

  The present invention has been made in view of the above-described problems of the prior art, and can prevent dust from a crusher from entering the inverter control panel and stably support the inverter control panel, which is a heavy object. The purpose is to provide a self-propelled crusher that can be used.

  In order to solve the above-described problems, the present invention is a self-propelled traveling body, a main body frame provided on the traveling body, extending in the front and rear directions, and provided on one side in the length direction of the main body frame. A hopper into which an object is thrown, a power unit provided on the other side in the length direction of the main body frame using an electric motor as a power source, and a power output provided from the power unit provided between the power unit and the hopper The crusher that crushes the object to be crushed charged into the hopper, and the base end side is disposed below the crusher, and the distal end side extends to the other side in the length direction of the main body frame and is crushed by the crusher. It is applied to a self-propelled crusher comprising a discharge conveyor that discharges crushed material to the outside.

  A feature of the configuration adopted by the invention of claim 1 is that it has an inverter control panel for controlling the voltage supplied to the electric motor, and the inverter control panel is on the opposite side of the crusher across the power unit. And it exists in the position which becomes above the said discharge conveyor.

  According to a second aspect of the present invention, the other side in the length direction of the main body frame is left and right support arms extending forward and rearward with the discharge conveyor in between, and between the left and right support arms, the A control panel mounting member is provided above the discharge conveyor, and the inverter control panel is mounted on the control panel mounting member.

  According to a third aspect of the present invention, the control panel mounting member includes a horizontal frame member that extends in the left and right directions above the discharge conveyor, and is mounted on the left and right support arms, and upward and downward on the power unit side. The upper and lower intermediate portions are attached to the horizontal frame member and the lower end portion is constituted by a vertical frame member attached to the left and right support arms, and the horizontal frame member is A control panel support portion that is positioned on the vertical frame member side and supports the inverter control panel; and a scaffold for checking the inverter control panel disposed on the opposite side of the vertical frame member across the control panel support section; It is to be composed of a scaffold part.

  According to a fourth aspect of the present invention, the control panel mounting member is provided with a ladder mounting member extending downward from the scaffold portion, and the ladder mounting member has a ladder for moving up and down between the scaffold portion and the ground. It is in the configuration to attach.

  According to a fifth aspect of the present invention, the ladder is provided at an upper ladder extending upward and downward along the ladder attachment member, and a lower end portion of the ladder attachment member, and continues to the ground continuously to the upper ladder. It is constituted by a lower ladder that moves between an extended use position and a storage position jumped to the lower side of the scaffold portion.

  According to the first aspect of the present invention, by disposing the inverter control panel on the opposite side of the crusher across the power unit, the inverter control panel can be separated from the crusher that generates dust during the crushing operation. Intrusion into the inverter control panel can be suppressed. Further, by disposing the inverter control panel above the discharge conveyor, it is possible to prevent the crushed material dropped from the discharge conveyor from colliding with the inverter control panel and protect the inverter control panel. As a result, the reliability of the inverter control panel can be improved, the electric motor as a power source can be always properly controlled by the inverter control panel, and the crushing operation can be performed smoothly over a long period of time.

  According to the second aspect of the present invention, the control panel mounting member is provided between the left and right support arms extending in the front and rear directions across the discharge conveyor, and the inverter control panel is mounted on the control panel mounting member. Therefore, the inverter control panel, which is a heavy object, can be stably supported by the left and right support arms. In addition, by installing the inverter control panel on the control panel mounting member located above the discharge conveyor, the inverter control panel can be placed at a high position from the ground, so that the inverter control The panel can be prevented from interfering with obstacles on the ground, and the inverter control panel can be protected.

  According to the invention of claim 3, the vertical frame member constituting the control panel mounting member is arranged on the power unit side and extends upward and downward, and the middle portion in the upper and lower directions is attached to the horizontal frame member and the lower end. Since the part is attached to the left and right support arms, not only can the inverter control panel be supported by the control panel support part of the horizontal frame member, but the inverter control panel can be supported in the front and rear directions by the vertical frame member, It is possible to prevent the inverter control panel from falling to the power unit side during traveling or the like.

  Further, since the scaffolding portion is provided on the horizontal frame member, when performing inspection work on the inverter control panel supported on the control panel support section, the worker can secure a wide working space using the scaffold section as a scaffold. It is possible to improve the workability of the inspection work.

  According to the invention of claim 4, by attaching the ladder to the ladder mounting member of the control panel mounting member, the operator can quickly move up and down between the control panel mounting member and the ground using the ladder as a scaffold. The workability when performing the inspection work for the inverter control panel can be improved.

  According to the invention of claim 5, the ladder attached to the ladder attaching member is constituted by the upper ladder and the lower ladder, and the lower ladder moves between the use position and the storage position. When the ladder is in the use position, the worker can quickly move up and down between the scaffold portion of the control panel mounting member and the ground using the lower ladder and the upper ladder as scaffolds. On the other hand, when the ladder is not used, the lower ladder is stored in the storage position that is raised to the lower side of the scaffolding part, so that the lower ladder is an obstacle for the worker around the self-propelled crusher. Can be prevented.

  Hereinafter, embodiments of a self-propelled crusher according to the present invention will be described in detail with reference to the accompanying drawings.

  In the figure, reference numeral 1 denotes a self-propelled crusher. This self-propelled crusher 1 can finely crush and transport a large amount of rocks generated by, for example, blasting work or excavation work in tunnel construction by a crusher 19 described later. A small crushed material. For this reason, the self-propelled crusher 1 is configured to use an electric motor 17 described later as a power source for driving the crusher 19 and the like instead of the engine that discharges harmful exhaust gas. And the self-propelled crusher 1 is comprised by the below-mentioned traveling body 2, the main body frame 7, the hopper 14, the power unit 16, the crusher 19, the discharge conveyor 20, the inverter control board 26, etc.

  Reference numeral 2 denotes a self-propelled crawler type traveling body. The traveling body 2 includes a track frame 3 having left and right side frames 3A and 3A extending in the front and rear directions, and front and rear directions of the side frames 3A. Idle wheel 4 provided on one end side of this, drive wheel 5 provided on the other end side and driven by a hydraulic motor, and endless crawler belt 6 wound around these drive wheel 5 and idle wheel 4. And is roughly composed. The self-propelled crusher 1 is configured to self-propel to the work site by driving the crawler belt 6 around by the drive wheels 5 of the traveling body 2.

  Reference numeral 7 denotes a main body frame provided on the traveling body 2 and extending in the front and rear directions. As shown in FIG. 5, the main body frame 7 is a main frame located on one side in the length direction (front and rear directions). The frame 8 and the support arms 12 described later, which are attached to the main frame 8 and are located on the other side in the length direction, are roughly configured.

  Here, the main frame 8 faces the left and right main beams 9 and 9 extending in the front and rear directions while facing each other at a predetermined interval, and before and after the connection between the left and right main beams 9. The beams 10 and 10 and the front and rear legs 11 and 11 extending downward from the left and right main beams 9, respectively, generally constitute a strong support structure. Each leg 11 of the main frame 8 is fixed to the left and right side frames 3A of the traveling body 2, and a hopper 14 and a crusher 19 described later are attached to the main frame 8.

  Reference numerals 12 and 12 denote left and right support arms attached to the other side in the length direction of the left and right main beams 9 constituting the main frame 8, and each of the support arms 12 sandwiches a discharge conveyor 20 described later. The main body frame 7 and the main frame 8 are configured to extend in the front and rear directions. Here, on one side in the length direction of each support arm 12, power unit support members 12A and 12A for supporting a power unit 16 to be described later are provided apart from each other in the front and rear directions. On the side, mounting seats 12B and 12B on which a control panel mounting member 21 (to be described later) is provided are provided separated from each other in the front and rear.

  Reference numeral 13 denotes a hopper support frame provided on one side in the length direction of the main body frame 7, and the hopper support frame 13 has a strong frame shape formed by using, for example, a plurality of beam members, and the main frame 8 Are mounted on each main beam 9. The hopper support frame 13 supports a hopper 14 and a feeder 15 which will be described later.

  Reference numeral 14 denotes a hopper supported by a hopper support frame 13, and the hopper 14 is formed as a box body having an inverted pyramid shape as a whole, and a crushing object such as a rock is put therein. And the lower end side of the hopper 14 becomes an open end, and the below-mentioned feeder 15 is arrange | positioned under this open end.

  Reference numeral 15 denotes a feeder provided on the lower side of the hopper 14, and the feeder 15 is constituted by a vibratory feeder such as a grizzly feeder, for example, and a crusher 19 described later removes a crushing object that has dropped down through the open end of the hopper 14. It supplies for

  Reference numeral 16 denotes a power unit provided on the other side in the length direction of the main body frame 7, and the power unit 16 is mounted on each power unit support member 12 </ b> A provided on the left and right support arms 12. Here, the power unit 16 includes a three-phase AC electric motor 17 serving as a power source, a hydraulic pump (not shown) driven by the electric motor 17, and a building that houses the electric motor 17, the hydraulic pump, and the like. The cover 18 is generally configured. Then, the hydraulic pump is driven by the electric motor 17 so that the hydraulic oil for operation is supplied to a hydraulic actuator such as a crusher 19 described later mounted on the self-propelled crusher 1.

  Reference numeral 19 denotes a crusher provided between the power unit 16 and the hopper 14, and the crusher 19 swings opposite to the fixed tooth 19A having a large number of crushing teeth and a fixed tooth 19A having a number of crushing teeth. The movable tooth 19B provided so as to be possible is provided. Here, the upper end side of the movable tooth 19B is eccentrically connected to a flywheel 19C driven by, for example, a hydraulic motor (not shown), and the flywheel 19C rotates to approach and separate from the fixed tooth 19A. Is configured to swing so as to repeat.

  The crusher 19 swings the movable tooth 19B in a state where the object to be crushed put into the hopper 14 is supplied between the fixed tooth 19A and the movable tooth 19B by the feeder 15, thereby crushing the object. Is crushed finely between the fixed teeth 19A and the movable teeth 19B, and the crushed crushed material is dropped downward. The motor for driving the flywheel 19C is not limited to a hydraulic motor, and the flywheel 19C may be driven using an electric motor.

  Reference numeral 20 denotes a discharge conveyor. The discharge conveyor 20 is constituted by a belt conveyor, for example, and discharges the crushed material crushed by the crusher 19 to the outside. Here, the base end side of the discharge conveyor 20 is located between the left and right side frames 3A of the traveling body 2 and disposed below the crusher 19, and the distal end side of the discharge conveyor 20 is connected to the main body from the traveling body 2. It passes between the left and right support arms 12 of the frame 7 and extends to the outside of each support arm 12 while being inclined obliquely upward.

  Next, 21 indicates a control panel mounting member provided between the left and right support arms 12, and this control panel mounting member 21 is for mounting an inverter control panel 26 described later. Here, as shown in FIGS. 6 and 7, the control panel mounting member 21 is roughly constituted by a horizontal frame member 22 and a vertical frame member 25 described later.

  Reference numeral 22 denotes a horizontal frame member serving as a base of the control panel mounting member 21. The horizontal frame member 22 is mounted on the left and right support arms 12, and extends above the discharge conveyor 20 in the left and right directions. Then, as shown in FIG. 6, the horizontal frame member 22 is disposed on the side opposite to the vertical frame member 25 with the control panel support portion 23 positioned on the vertical frame member 25 side and the control panel support portion 23 interposed therebetween. And a scaffold part 24. Further, on the outer peripheral side of the horizontal frame member 22, a handrail 22 </ b> A for protecting an operator who has climbed on the scaffold portion 24 is erected.

  Here, the control panel support portion 23 includes a front horizontal beam 23A and a rear horizontal beam 23B extending in the left and right directions, and left and right connecting beams 23C and 23C connecting the front and rear horizontal beams 23A and 23B. As a whole, it is configured as a rectangular frame extending in the left and right directions. An inverter control panel 26 described later is supported on the upper surface side of the control panel support portion 23. Further, a vertical frame member 25 is fixed to the front horizontal beam 23A of the control panel support portion 23 by means such as welding.

  On the other hand, the scaffold portion 24 is disposed adjacent to the rear lateral beam 23B side of the control panel support portion 23, and has a stepped plate shape with the central portion raised by one step with respect to the left and right sides, and the left as a whole. , It is configured as a rectangular plate extending in the right direction. And the scaffold part 24 forms an operator's scaffold when performing the inspection operation | work with respect to the below-mentioned inverter control panel 26 attached on the control panel support part 23. FIG.

  Here, left and right mounting flanges 24A and 24A, which are paired in the left and right directions, protrude downward on the rear end side of the scaffold portion 24, and each of these mounting flanges 24A has left and right support arms. 12 is configured to be detachably attached to a mounting seat 12 </ b> B provided at 12 using a bolt (not shown). Further, left and right ladder attachment members 24B and 24B having a rectangular box shape are provided on the lower surface side of the scaffold portion 24, and a ladder 32 described later is attached to each of these ladder attachment members 24B. ing.

  Reference numeral 25 denotes a vertical frame member that constitutes the control panel mounting member 21 together with the horizontal frame member 22, and the vertical frame member 25 is disposed on the power unit 16 side as shown in FIG. 3 and the like, and extends upward and downward. Here, as shown in FIG. 6, the vertical frame member 25 has left and right vertical beams 25 </ b> A and 25 </ b> A extending upward and downward with a constant interval in the left and right directions, and between these vertical beams 25 </ b> A. The connecting beam 25B to be connected constitutes an H-shaped frame as a whole.

  The upper and lower intermediate portions of the left and right vertical beams 25A constituting the vertical frame member 25 are welded to the front horizontal beams 23A constituting the control panel support portion 23 of the horizontal frame member 22 by means such as welding. It is fixed. Further, flat mounting flanges 25C are provided at the lower ends of the left and right vertical beams 25A, respectively, and these mounting flanges 25C are bolted to mounting seats 12B provided on the left and right support arms 12. (Not shown) is detachably attached. Further, mounting eyes 25D are provided at the upper ends of the left and right vertical beams 25A, respectively. These mounting eyes 25D are used when the control panel mounting member 21 is lifted by using, for example, a hydraulic crane. The hanging load hook (not shown) is hooked.

  As described above, the control panel mounting member 21 includes the horizontal frame member 22 and the vertical frame member 25. As shown in FIG. 7, each mounting flange 24A provided on the scaffold portion 24 of the horizontal frame member 22, By bolting each mounting flange 25C provided at the lower end of the frame member 25 to a mounting seat 12B provided on each support arm 12 of the main body frame 7, as shown in FIG. It is located between the left and right support arms 12 positioned above.

  An inverter control panel 26, which will be described later, is mounted on the control panel support 23 of the horizontal frame member 22. The vertical frame member 25 supports the inverter control panel 26 in the front and rear directions, for example, self-propelled. The inverter control panel 26 is prevented from falling to the power unit 16 side during traveling of the crusher 1 or the like.

  Next, reference numeral 26 denotes an inverter control panel mounted on the control panel mounting member 21, and this inverter control panel 26 controls the drive voltage of the electric motor 17. Here, as shown in FIG. 8, the inverter control panel 26 includes an AC-DC conversion circuit (AC / DC) 28 that converts AC power supplied from a commercial power supply 27 of 50 Hz or 60 Hz into DC power, and a V-phase. An inverter device 29 composed of switching elements composed of a power module 29A, a U-phase power module 29B, and a W-phase power module 29C, and an inverter control circuit 30 that controls the timing for switching the power modules 29A to 29C constituting the inverter device 29. And is roughly composed.

  The inverter control panel 26 controls the switching timing of the inverter device 29 by the inverter control circuit 30 regardless of whether the frequency of the commercial power supply 27 is 50 Hz or 60 Hz depending on the area where the self-propelled crusher 1 is used. In addition, by appropriately controlling the voltage for driving the electric motor 17, the number of rotations of the electric motor 17 serving as a power source is appropriately adjusted according to the work content.

  Further, the inverter control panel 26 is configured such that the above-described AC-DC conversion circuit 28, inverter device 29, and inverter control circuit 30 are integrally accommodated in a casing, and this inverter control panel 26 is configured as shown in FIGS. As shown in FIG. 4, it is attached to the control panel attachment member 21 and is disposed on the opposite side of the crusher 19 with the power unit 16 interposed therebetween and above the discharge conveyor 20.

  As a result, the inverter control panel 26 is separated from the crusher 19 that generates dust during the crushing operation, so that dust can be prevented from entering the inverter control panel 26, and the crushed material dropped from the discharge conveyor 20 The inverter control panel 26 can be protected by preventing the control panel 26 from colliding.

  31 and 31 are cooling devices provided in the inverter control panel 26, and each cooling device 31 cools the heat generated from the inverter control panel 26 when the self-propelled crusher 1 is operated. And each cooling device 31 is also provided in the surface on the opposite side to the crusher 19 among the inverter control panels 26, and the structure which can suppress that the cooling efficiency of the cooling device 31 falls by the dust which generate | occur | produces from the crusher 19. It has become.

  32 and 32 are left and right ladders provided on the horizontal frame member 22 of the control panel mounting member 21, and each ladder 32 is provided on the scaffold portion 24 of the horizontal frame member 22 as shown in FIGS. It is attached to the left and right ladder attachment members 24B provided. The left and right ladders 32 form a scaffold for ascending and descending between the scaffold portion 24 of the control panel mounting member 21 and the ground, and are constituted by an upper ladder 33 and a lower ladder 34 which will be described later. Has been.

  Reference numeral 33 denotes an upper ladder that constitutes an upper portion of each ladder 32. The upper ladder 33 has, for example, a three-stage step board 33A, and is fixed to the rear end portion of the ladder attachment member 24B via a bracket 33B. The upper ladder 33 extends substantially vertically (upward and downward) along the ladder attachment member 24B.

  Reference numeral 34 denotes a lower ladder disposed on the lower side of the upper ladder 33. The lower ladder 34 has, for example, a step plate 34A that is continuous in a four-step manner, and as shown in FIG. The upper end portion 34B is rotatably coupled to the lower end side of the ladder mounting member 24B. Further, a lower end portion of the stay 35 is coupled to the upper and lower intermediate portions of the lower ladder 34 so as to be movable in the length direction. The upper end portion of the stay 35 is connected to the upper end portion 34B of the lower ladder 34. It is separated from the front and pin-coupled to the lower end side of the ladder mounting member 24B so as to be rotatable.

  Thus, the lower ladder 34 moves between the use position indicated by the solid line in FIG. 3 and the storage position indicated by the two-dot chain line, and is positioned at either the use position or the storage position according to the work contents. It is the composition which becomes. When the lower ladder 34 is set to the use position (solid line position), the operator uses the lower ladder 34 and the upper ladder 33 as scaffolds to quickly move between the scaffold portion 24 of the control panel mounting member 21 and the ground. When the lower ladder 34 is set in the retracted position (the position indicated by the two-dot chain line), the lower ladder 34 is lifted to the lower side of the scaffold portion 24, so that it becomes an obstacle for the operator. Can be avoided.

  The self-propelled crusher 1 according to the present embodiment has the above-described configuration, and the self-propelled crusher 1 crushes crushing objects such as rocks generated by blasting work or tunneling work in tunnel construction, for example. When doing so, first, the self-propelled crusher 1 is caused to self-propel to the work site in the tunnel by the traveling body 2.

  Then, after the self-propelled crusher 1 arrives at the work site, the crushing object such as a rock generated by the blasting work or the excavating work is removed using a hydraulic excavator (not shown) or the like. Into the hopper 14. The coarsely crushed object put into the hopper 14 is supplied to the crusher 19 by the feeder 15 and finely crushed between the fixed teeth 19A and the movable teeth 19B of the crusher 19, and then the particles are made fine. The crushed material is discharged to the outside by the discharge conveyor 20.

  At this time, the inverter control panel 26 appropriately adjusts the rotation speed of the electric motor 17 by controlling the timing at which the power modules 29A, 29B, and 29C of the inverter device 29 are switched by the inverter control circuit 30. Thereby, the discharge amount of the pressure oil from the hydraulic pump (not shown) driven by the electric motor 17 changes, and the rotation speed of the hydraulic motor (not shown) that drives the flywheel 19C of the crusher 19 is adjusted. be able to.

  In this way, the power of the crusher 19 can be adjusted appropriately according to the size and hardness of the object to be crushed, such as rock to be crushed, so that the crushing work of the rock etc. at the tunnel construction site can be performed efficiently. be able to.

  In this case, in the self-propelled crusher 1 according to the present embodiment, the inverter control panel 26 is located on the opposite side of the crusher 19 with the power unit 16 interposed therebetween and is disposed above the discharge conveyor 20.

  As a result, the inverter control panel 26 can be separated from the crusher 19 that generates dust during the crushing operation, so that it is possible to reliably prevent dust from entering the inverter control panel 26. Moreover, since it can avoid that the crushed material which fell from the discharge conveyor 20 collides with the inverter control panel 26, the inverter control panel 26 can be protected. As a result, the reliability of the inverter control panel 26 can be improved even in a work site where a large amount of dust is generated, such as a tunnel construction site, and the electric motor 17 as a power source is always properly controlled by the inverter control panel 26. The crushing operation can be performed smoothly over a long period of time.

  In addition, since the control panel mounting member 21 is provided between the left and right support arms 12 extending in the forward and backward directions with the discharge conveyor 20 in between, and the inverter control panel 26 is mounted on the control panel mounting member 21, The inverter control panel 26 that is a heavy object can be stably supported between the left and right support arms 12. Moreover, since the inverter control panel 26 can be disposed at a high position from the ground by mounting the inverter control panel 26 on the control panel mounting member 21 disposed above the discharge conveyor 20, the self-propelled crusher 1 During traveling, the inverter control panel 26 can be prevented from interfering with obstacles on the ground, and the inverter control panel 26 can be protected.

  Further, the control panel mounting member 21 is disposed so as to extend in the upward and downward directions on the side of the power unit 16 and the horizontal frame member 22 that is attached to the left and right support arms 12, and the intermediate portion in the upper and lower directions is the horizontal frame member. 22 and a vertical frame member 25 attached to the left and right support arms 12 and attached to the front transverse beam 23A. Thereby, not only the inverter control panel 26 can be mounted on the control panel support 23 of the horizontal frame member 22, but also the inverter control panel 26 can be supported in the front and rear directions by the vertical frame member 25. It is possible to reliably prevent the inverter control panel 26 from falling to the power unit 16 side when the machine 1 is traveling and to protect the inverter control panel 26.

  Next, when performing an inspection work on the inverter control panel 26, the operator uses the ladder 32 attached to the ladder attachment member 24B of the control panel attachment member 21 (scaffolding portion 24) as a scaffold and attaches the ground to the control panel. The member 21 can be moved up and down quickly and safely. Since the worker who has moved up on the control panel mounting member 21 can secure a wide working space by using the scaffold portion 24 provided on the horizontal frame member 22 of the control panel mounting member 21 as a scaffold, the inverter control panel 26 can be secured. It is possible to improve the workability when checking.

  In this way, after the inspection work for the inverter control panel 26 is completed, the operator quickly uses the ladder 32 attached to the control panel mounting member 21 as a scaffold to quickly move between the ground and the control panel mounting member 21. And it can be moved up and down safely.

  In this case, as shown in FIG. 3, the ladder 32 is fixed to the ladder mounting member 24B and is disposed below the upper ladder 33, and an upper ladder 33 that extends substantially vertically along the ladder mounting member 24B. In FIG. 3, the lower ladder 34 is positioned at either one of the use position indicated by a solid line and the storage position indicated by a two-dot chain line. Thus, after the inspection work on the inverter control panel 26 is completed, the lower ladder 34 is stored in the storage position (the position of the two-dot chain line) jumped to the lower side of the scaffold portion 24, thereby the ladder 32. Can be prevented from becoming an obstacle for the workers around the self-propelled crusher 1.

  In the above-described embodiment, the case where the flywheel 19C of the crusher 19 is driven by a hydraulic motor is described as an example. However, the present invention is not limited to this. For example, the flywheel 19C may be driven by an electric motor controlled by an inverter.

  In the above-described embodiment, the case where the main body frame 7 is constituted by the main frame 8 and the left and right support arms 12 attached to the main frame 8 is illustrated. However, the present invention is not limited to this, and the main body frame 7 may be configured by extending the main frame 8 forward and backward.

It is a front view which shows the self-propelled crusher by embodiment of this invention. It is a top view of a self-propelled crusher. It is a front view of the principal part expansion which shows the control panel attachment member, inverter control panel, ladder, etc. in FIG. FIG. 4 is a right side view of a control panel mounting member, an inverter control panel, a ladder, and the like when viewed from the direction of arrows IV-IV in FIG. 3. It is a perspective view which shows the state which attached the main body frame to the traveling body. It is a perspective view which shows a control panel attachment member alone. It is a perspective view which shows the state which attached the control panel attachment member to the main body frame. It is a block diagram which shows the structure of an inverter control panel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Self-propelled crusher 2 Running body 7 Main body frame 12 Support arm 14 Hopper 16 Power unit 17 Electric motor 19 Crusher 20 Discharge conveyor 21 Control panel attachment member 22 Horizontal frame member 23 Control panel support part 24 Scaffolding part 25 Vertical frame member 26 Inverter Control panel 32 Ladder 33 Upper ladder 34 Lower ladder

Claims (5)

A self-propelled traveling body, a main body frame provided on the traveling body and extending in the front and rear directions, a hopper provided on one side in the length direction of the main body frame and into which an object to be crushed is placed, and the main body A power unit provided on the other side in the length direction of the frame and using an electric motor as a power source, and an object to be crushed put into the hopper by power output from the power unit provided between the power unit and the hopper. A crusher for crushing, and a discharge conveyor having a base end side disposed below the crusher and a distal end side extending to the other side in the length direction of the main body frame to discharge the crushed material crushed by the crusher to the outside. In the self-propelled crusher provided,
An inverter control panel for controlling a voltage for driving the electric motor;
The self-propelled crusher is characterized in that the inverter control panel is arranged at a position opposite to the crusher with the power unit interposed therebetween and above the discharge conveyor.   The other side of the main body frame in the length direction is left and right support arms extending forward and rearward with the discharge conveyor interposed therebetween, and the left and right support arms are positioned above the discharge conveyor. The self-propelled crusher according to claim 1, wherein a control panel mounting member is provided, and the inverter control panel is mounted on the control panel mounting member. The control panel mounting member is arranged to extend left and right above the discharge conveyor to the left and right support arms, and to extend upward and downward on the power unit side. A lower middle portion is attached to the horizontal frame member and a lower end portion is constituted by a vertical frame member attached to the left and right support arms,
The horizontal frame member is positioned on the vertical frame member side and supports the inverter control panel, and the inverter control panel is disposed on the opposite side of the vertical frame member across the control panel support part. The self-propelled crusher according to claim 2, wherein the self-propelled crusher is configured by a scaffold part that serves as a scaffold when inspecting the container. Wherein the control panel attachment member, the ladder mounting member extending downwardly from said scaffold portion provided on the該梯Ko mounting member, claim comprising a structure for mounting the ladder for lifting between said scaffold portion and the ground 3. The self-propelled crusher according to 3 .   The ladder is provided on an upper ladder extending upward and downward along the ladder attaching member, a lower end portion of the ladder attaching member, and a use position extending to the ground continuously to the upper ladder and the scaffold portion. The self-propelled crusher according to claim 4, comprising a lower ladder that moves between a storage position jumped to the lower side.

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