JPH08196934A - Safety device for construction waste material crusher - Google Patents

Abstract

PURPOSE: To keep an engine in the stop state and set a keyswitch for the engine to be inoperative by setting a limit switch in the OFF state following the setting of an upper opening and closing guard cover of a chute opening in the open state. CONSTITUTION: A construction waste material crusher is provided with an operation panel 26. A limit switch 17 is installed as a means of sensing the opening and closing state of an upper opening and closing cover 15 on a chute opening 14 on one site of a main vehicle body 11. The limit switch 17 is interposed and wired on a power line through which a coil 45 of a relay 44 on the downstream side of a keyswitch 43 communicates with a ground. When the upper opening and closing guard cover 15 of the chute opening 14 is set in the open state, the limit switch 17 interposed on the power line between the coil 45 of the relay 44 on a circuit of engine keyswitch 43 and the ground is set in the OFF sate by the arrangement. The engine, therefore, can be kept in the stop state and the keyswitch 43 can be set to be inoperative.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a construction waste material crusher that performs a crushing process for recycling construction waste materials such as concrete waste and asphalt waste.

[0002]

2. Description of the Related Art FIG. 7 is a perspective view showing a construction waste material crusher 1 according to an embodiment of the prior art. In the construction waste material crusher 1, a main vehicle body 3 is connected to an upper portion of a crawler traveling body 2, and a hopper 4 for receiving construction waste material such as concrete trash (not shown) is provided on an upper front side of the main vehicle body 3 and the hopper 4 The construction waste supplied to the hopper is sent from the lower opening of the hopper through the chute opening 5 to the crusher 7 (the crusher 7 is not shown in the figure because the crusher 7 is located inside the main body 3) by the feeder 6 and crushes it into fine particles. The crusher having the finely divided particles is carried out by the conveyor 8 arranged below the crusher 7. The upper portion of the chute opening 5 is opened, and an upper opening / closing guard lid (not shown) is usually provided.

[0003]

During the crushing work of the construction waste material crusher, the supplied construction waste material may cause clogging near the upper portion of the crusher. In this case, since the operator manually performs the operation for clearing the clogging from the chute opening opening on the upper surface side of the main vehicle body, it is necessary to completely stop the actuators such as the feeder and the crusher. The present invention
An object of the present invention is to provide a safety device that can solve the above problems.

[0004]

In the safety device according to the first embodiment of the present invention, a hopper for receiving construction waste such as concrete debris is provided on the upper part of the machine body, and the construction waste supplied to the hopper is discharged from the lower opening of the hopper. It is sent to a crusher by a feeder through a chute opening having an upper opening / closing guard lid and crushed into predetermined fine particles, and the finely crushed crusher is carried out by a conveyor arranged below the crusher. , The drive of hydraulic actuators such as conveyors is controlled by each electromagnetic switching valve, and the power supply voltage is applied to each solenoid of each electromagnetic switching valve via the relay by turning on the key switch for engine start. As a means to detect the open / closed state of the upper opening / closing guard lid of the chute mouth in the waste material crusher Attach the limit switch to one site of the body, and a coil that limit switch of the relay,
An electric wire was connected to an electric path communicating with the ground, and the limit switch was set to an off state when the upper opening / closing guard lid was open. Also, in the safety device according to the second embodiment of the present invention, a plurality of limit switches are attached to the body part as means for detecting the open / closed state of the upper opening / closing guard lid of the chute opening, and the limit switches are respectively attached to the feeder and crusher electromagnetic fields. The solenoids of the directional control valve were wired to the earth side circuit, and both limit switches were set to the OFF state when the upper opening / closing guard lid was open.

Further, in the safety device of the third embodiment of the present invention, means for detecting the open / closed state of the upper opening / closing guard lid of the chute opening is provided, and an opening / closing switch is connected to an electric path connecting the coil of the relay and the ground. The controller outputs the OFF operation command signal to the open / close switch by inputting the signal from the detecting means to the controller and determining that the signal is the open state signal of the upper open / close guard lid. I did it. Further, in the safety device of the fourth embodiment of the present invention, means for detecting the open / closed state of the upper opening / closing guard lid of the chute opening is provided, and an opening / closing switch is provided in each earth side circuit of each solenoid of the feeder and crusher electromagnetic switching valves. By inserting the signal from the detection means into the controller and determining that the signal is the open state signal of the upper opening / closing guard lid, the controller sends an OFF operation command signal to both the opening / closing switches. I tried to output it. In the safety devices of the third and fourth embodiments, a display device for displaying the open state of the upper opening / closing guard lid is provided, and the open state signal is input from the detecting means to the controller,
A display command signal is output from the controller to the display device.

[0006]

In the safety device according to the first embodiment of the present invention, when the upper opening / closing guard lid of the chute opening is opened, the limit switch provided in the electric path between the relay coil of the engine key switch circuit and the ground is turned off. It becomes a state. Therefore, the engine can be maintained in the stopped state and the key switch for the engine can be disabled. Further, in the safety device of the second embodiment, when the upper opening / closing guard lid of the chute opening is opened, the limit switches provided in the earth side circuits of the solenoids of the feeder and crusher electromagnetic switching valves are turned off. Therefore, both solenoids are de-energized, the feeder and crusher can be held in a stopped state, and both feeder and crusher work switches can be disabled.

In the safety device according to the third embodiment of the present invention, when the upper opening / closing guard lid of the chute opening is opened, the open state signal from the detecting means is input to the controller.
The controller judges the above signal and outputs an off operation command signal to the open / close switch provided between the relay coil and the ground. As a result, the open / close switch is turned off. Therefore, the engine can be maintained in the stopped state and the key switch for the engine can be disabled. Further, in the safety device of the fourth embodiment, when the upper opening / closing guard lid of the chute opening is opened, the open state signal from the detecting means is input to the controller. The controller judges the above signal and outputs an OFF operation command signal to the open / close switches provided in the earth side circuits of the solenoids of the feeder and crusher solenoid switching valves. As a result, both open / close switches are turned off. Therefore, both solenoids will be de-energized and the feeder and crusher will remain stopped, and
Both work switches for feeder and crusher can be disabled. Further, in the third and fourth embodiments, since the display device for displaying the open state of the opening / closing guard lid is provided, when the open state signal from the detecting means is input to the controller, the controller notifies the display device. A display command signal is output. As a result, the display device displays such as lighting indicating that the upper opening / closing guard lid is open.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a partially cutaway side view of a construction waste material crusher 9 equipped with a safety device according to a first embodiment of the present invention. In the figure, 10 is a crawler traveling body of the construction waste material crusher 9, 11
Is a main vehicle body connected to the upper part of the crawler traveling body 1,
2 is a hopper disposed on the upper front side of the main body 11,
Is a construction waste that is a shredder, 14 is a chute opening that communicates from the hopper lower opening of the hopper 12, 15 is an upper opening / closing guard lid that is a cover of the chute opening 14, 16 is an upper opening / closing guard lid 15 that is a fixed part of the main vehicle body 11 Hinge member attached to the hinge, 17 is a limit switch, 18 is a construction waste material 13
Is fed from the lower opening of the hopper through the chute opening 14 to the crusher 19, 20 is a jaw that crushes the construction waste material 13, 21 is a main shaft for the crusher 19, 22 is a flywheel attached to the main shaft 21, 23 is a passage, 24
Is a high-altitude step for climbing up to the vicinity of the chute mouth 14, 25 is a conveyor arranged below the crusher 19,
The arrow a indicates the opening / closing direction of the upper opening / closing guard lid 15. Figure 2
[Fig. 2] is a plan view of relevant parts near the upper opening / closing guard lid 15 as viewed from A of Fig. 1.

FIG. 3 is an electric circuit diagram of the safety device according to the first embodiment of the present invention. In the figure, 26a is an operation panel (shown by phantom lines) installed in the construction waste crusher 9, 27 is a traveling / work changeover switch, 28 is a main control electromagnetic changeover valve, 2
Reference numerals 9, 30, 31, 32 denote work switches for operating the crusher electromagnetic switching valve 33, the conveyor electromagnetic switching valve 34, the feeder electromagnetic switching valve 35, and the generator electromagnetic switching valve 36, 37 is a horn switch, and 38 is Emergency stop alternate switch, 39 is an on / off display lamp provided for the emergency stop alternate switch 38, 40 is an alarm buzzer, 41 is a traveling motor control electromagnetic switching valve, 42 is a power supply, and 43 is Key switch for engine (not shown), 44 is a relay, 45 is a relay 4
The coil 4 and the contact 46.

Next, the structure and operation of the safety device according to the first embodiment of the present invention will be described with reference to FIGS. In the present invention, the limit switch 17 is provided as a means for detecting the open / closed state of the upper opening / closing guard lid 15 of the chute opening 14 in the main vehicle body 11.
The limit switch 17 was wired in an electric path that connects the coil 45 of the relay 44 on the downstream side of the key switch 43 to the ground. As a result, when the upper opening / closing guard lid 15 of the chute port 14 is opened, the limit switch 17 provided in the electric path between the coil 45 of the relay 44 of the engine key switch 43 circuit and the ground is turned off. . Therefore, the engine (not shown) can be held in a stopped state and the key switch 43 can be disabled.

Next, FIG. 4 is an electric circuit diagram of a safety device according to a second embodiment of the present invention. In the figure, the same components as those of the safety device according to the first embodiment of FIG. 3 are designated by the same reference numerals. 26b is an operation panel, and 47 and 48 are limit switches. Next, the configuration and operation of the safety device according to the second embodiment of the present invention will be described with reference to FIG. In the present invention, two limit switches 47 and 4 are provided as means for detecting the open / closed state of the upper opening / closing guard lid 15 of the chute port 14.
8 is attached to a part of the main vehicle body 11, and its limit switches 47 and 48 are respectively attached to the feeder electromagnetic switching valve 35 and
The solenoids (not shown) of the crusher solenoid directional control valve 33 are wired to the earth side circuits 50 and 49. Thereby, the upper opening / closing guard lid 1 of the chute opening 14
When the switch 5 is opened, the two limit switches 48 and 47 are turned off. Therefore, both solenoids (not shown) of the feeder electromagnetic switching valve 35 and the crusher electromagnetic switching valve 33 become non-energized.
Also, the crusher 19 can be held in the stopped state, and the feeder work switch 31 and the crusher work switch 29 can be made inoperable.

Next, FIG. 5 is an electric circuit diagram of a safety device according to a third embodiment of the present invention. In the figure, the same components as those of the safety device according to the first embodiment of FIG. 3 are designated by the same reference numerals. 26c is an operation panel, 17 'is a limit switch, 51 is an open / close switch, 52 is a controller, and 53 is a display device. Next, the configuration and operation of the safety device according to the third embodiment of the present invention will be described with reference to FIG. In the present invention, the limit switch 17 'is provided as a means for detecting the open / closed state of the upper opening / closing guard lid 15 of the chute opening 14 in the main vehicle body 11
The limit switch 1 is mounted on one side of the limit switch 1 and the open / close switch 51 is wired in the electric path that connects the coil 45 of the relay 44 on the downstream side of the key switch 43 and the ground.
A signal from 7'can be input to the controller 52, and a command signal from the controller 52 is output to the open / close switch 51 and the display device 53. As a result, when the upper opening / closing guard lid 15 of the chute port 14 is opened, the open state signal from the limit switch 17 'is input to the controller 52. Controller 5
In step 2, the above signal is judged and an off operation command signal is output to the open / close switch 51 and a display command signal is output to the display device 53. Since the open / close switch 51 is turned off, the engine (not shown) can be held in a stopped state and the key switch 43 can be disabled. Further, the display device 53 includes an upper opening / closing guard lid 15
Lights, emits light, and displays characters to indicate that is open. Note that the above display device can also be a means for generating and displaying a sound or the like.

Next, FIG. 6 is an electric circuit diagram of a safety device according to a fourth embodiment of the present invention. In the figure, the same components as those in the safety device of the fifth embodiment of FIG. 5 are designated by the same reference numerals. 26d is a control panel, 52 'is a controller,
Reference numerals 54 and 55 are open / close switches. Next, the configuration and operation of the safety device according to the fourth embodiment of the present invention will be described with reference to FIG. In the present invention, a limit switch 17 'is attached to one portion of the main body 11 as a means for detecting the open / closed state of the upper opening / closing guard lid 15 of the chute port 14, and the feeder electromagnetic switching valve 35 and the crusher electromagnetic switching valve 33 are mounted. Ground side circuit 5 of each solenoid (not shown)
Open / close switches 55, 54 are wired to 0 ', 49', respectively, so that a signal from the limit switch 17 'can be input to the controller 52', and a command signal from the controller 52 'is opened / closed by the open / close switches 55, 54. , And the display device 53. As a result, when the upper opening / closing guard lid 15 of the chute port 14 is opened, the open state signal from the limit switch 17 'is input to the controller 52'. Controller 5
At 2 ', the above signal is judged and the off operation command signal is output to the open / close switches 55 and 54, and the display command signal is output to the display device 53. Open / close switch 55, 5
Since 4 is turned off, both solenoids (not shown) of the feeder electromagnetic switching valve 35 and the crusher electromagnetic switching valve 33 are de-energized so that the feeder 18 and the crusher 19 are kept in the stopped state and the feeder work is performed. The switch 31 and the crusher work switch 29 can be made inoperable. In addition, the display device 53 lights up, emits light to indicate that the upper opening / closing guard lid 15 is in an open state,
Display characters. Note that the above display device can also be a means for generating and displaying a sound or the like.

[0014]

In the safety device according to the first embodiment of the present invention, when the upper opening / closing guard lid of the chute opening is opened, the limit switch provided in the electric path between the relay coil of the engine key switch circuit and the ground. Turns off. Therefore, the engine can be maintained in the stopped state and the key switch for the engine can be disabled.
Further, in the safety device of the second embodiment, when the upper opening / closing guard lid of the chute opening is opened, the limit switches provided in the earth side circuits of the solenoids of the feeder and crusher electromagnetic switching valves are turned off. Therefore, both solenoids are de-energized, the feeder and crusher can be held in a stopped state, and both feeder and crusher work switches can be disabled. Further, in the safety device of the third embodiment of the present invention, when the upper opening / closing guard lid of the chute opening is opened, the open state signal from the detecting means is input to the controller. The controller judges the above signal and outputs an off operation command signal to the open / close switch provided between the relay coil and the ground. As a result, the open / close switch is turned off. Therefore, the engine can be maintained in the stopped state and the key switch for the engine can be disabled. Further, in the safety device of the fourth embodiment, when the upper opening / closing guard lid of the chute opening is opened, the open state signal from the detecting means is input to the controller. The controller judges the above signal and outputs an OFF operation command signal to the open / close switches provided in the earth side circuits of the solenoids of the feeder and crusher solenoid switching valves. As a result, both open / close switches are turned off. Therefore, both solenoids are de-energized, the feeder and crusher can be held in a stopped state, and both feeder and crusher work switches can be disabled. Further, in the third and fourth embodiments, since the display device for displaying the open state of the upper opening / closing guard lid is provided, when the open state signal from the detecting means is input to the controller, the controller notifies the display device. A display command signal is output. As a result, the display device displays such as lighting indicating that the upper opening / closing guard lid is open. That is, the above display allows a worker or a driver around the construction waste crusher to recognize that the upper opening / closing guard lid is open. As described above, in the construction waste material crusher equipped with the safety device of the present invention, the feeder and crusher, or the engine does not operate when the construction waste material clogging removal work is performed by opening the upper opening / closing guard lid of the chute port. Therefore, it is possible to improve safety.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a construction waste material crusher equipped with a safety device of the present invention.

FIG. 2 is a plan view of relevant parts near an upper opening / closing guard lid as viewed from A of FIG.

FIG. 3 is an electric circuit diagram of the safety device according to the first embodiment of the present invention.

FIG. 4 is an electric circuit diagram of a safety device according to a second embodiment of the present invention.

FIG. 5 is an electric circuit diagram of a safety device according to a third embodiment of the present invention.

FIG. 6 is an electric circuit diagram of a safety device according to a fourth embodiment of the present invention.

FIG. 7 is a perspective view showing a construction waste material crusher according to an embodiment of the prior art.

[Explanation of symbols]

 3,11 Main vehicle body 5,14 Chute opening 6,18 Feeder 7,19 Crusher 15 Upper opening / closing guard lid 17,17 ', 47,48 Limit switch 29 Crusher work switch 31 Feeder work switch 33 Crusher solenoid switching valve 35 Electromagnetic selector valve for feeder 42 Power supply 43 Key switch 44 Relay 45 Coil 49,49 ', 50,50' Ground side circuit 51,54,55 Open / close switch 52,52 'Controller 53 Display device

Claims (5)

[Claims] 1. A hopper for receiving construction waste such as concrete debris is provided on an upper portion of the machine body, and the construction waste supplied to the hopper is fed from a lower opening of the hopper to a crusher by a feeder through a chute opening having an upper opening / closing guard lid. The crusher is crushed into predetermined fine particles, and the finely crushed crusher is carried out by a conveyor arranged below the crusher. The drive of the hydraulic actuator such as the conveyor is controlled by each solenoid switching valve, and the solenoid of each solenoid switching valve is
In a construction waste material crusher that applies a power supply voltage through a relay by turning on a key switch for engine start, a limit switch is a part of the machine body as a means for detecting the open / closed state of the upper opening / closing guard lid of the chute opening. The limit switch is set to the off state when the upper opening / closing guard lid is open, and the limit switch is set to the off state by arranging the limit switch on the electric circuit that connects the relay coil and the ground. Machine safety device. 2. A hopper for receiving construction waste such as concrete debris is provided on an upper part of the machine body, and the construction waste supplied to the hopper is fed from a lower opening of the hopper to a crusher by a feeder through a chute opening having an upper opening guard lid. The crusher is crushed to a specified fine grain, and the crusher that has been finely pulverized is carried out by a conveyor arranged below the crusher, and the drive of hydraulic actuators such as the feeder, crusher, and conveyor is controlled by each solenoid switching valve. In the construction waste crushing machine, a plurality of limit switches are attached to the machine body as a means for detecting the open / closed state of the upper opening / closing guard lid of the chute mouth, and the limit switches are electromagnetically switched for the feeder and crusher, respectively. Connect the wiring to the ground side circuit of each solenoid of the valve, and open the above upper part. A safety device for a construction waste material crusher, characterized in that both of the above limit switches are set to an off state when the closed guard lid is open. 3. A hopper for receiving construction waste such as concrete debris is provided on an upper part of the machine body, and the construction waste supplied to the hopper is fed from a lower opening of the hopper to a crusher by a feeder through a chute opening having an upper opening guard lid. The crushed material is crushed into the specified fine particles, and the crushed material that has been made into the fine particles is carried out by the conveyor arranged below the crusher, and the drive of the hydraulic actuators such as the feeder, crusher, and conveyor is controlled by each solenoid switching valve. The solenoid of each solenoid directional control valve,
In a construction waste material crusher in which a power supply voltage is applied through a relay by turning on a key switch for starting an engine, means for detecting an open / closed state of an upper opening / closing guard lid of the chute opening is provided, and a coil of the relay is also provided. By providing an open / close switch in an electric path that communicates with the ground, inputting a signal from the detecting means to the controller, and determining that the signal is an open state signal of the upper open / close guard lid, A safety device for a construction waste material crusher, wherein an off operation command signal is output from the controller to the opening / closing switch. 4. A hopper for receiving construction waste such as concrete debris is provided on the upper part of the machine body, and the construction waste supplied to the hopper is fed from a hopper lower opening to a crusher by a feeder through a chute opening having an upper opening / closing guard lid. The crusher is crushed to a specified fine grain, and the crusher that has been finely pulverized is carried out by a conveyor arranged below the crusher, and the drive of hydraulic actuators such as the feeder, crusher, and conveyor is controlled by each solenoid switching valve. In the construction waste material crusher, a means for detecting the open / closed state of the upper opening / closing guard lid of the chute opening is provided, and an open / close switch is provided in the earth side circuit of each solenoid of the feeder and crusher electromagnetic switching valves. The signal from the detection means is input to the controller, A safety device for a construction waste material crusher, characterized in that an off operation command signal is output from the controller to both of the opening / closing switches by determining that the signal is an open state signal of the upper opening / closing guard lid. 5. The safety device for a construction waste crusher according to claims 3 and 4, wherein a display device for displaying an open state of the upper opening / closing guard lid is provided, and an open state signal is input to the controller from a detecting means. By doing so, the controller outputs a display command signal to the display device, which is a safety device for a construction waste crusher.