Spiral protection device of on-site mixed loading granular ammonium nitrate fuel oil explosive truck

Abstract

The utility model provides a spiral protection device of an on-site mixed loading granular ammonium nitrate fuel oil explosive truck, and belongs to the field of spiral protection of explosive trucks. The problems that due to the fact that spiral swing of an existing on-site mixed loading granular ammonium nitrate fuel oil explosive truck is not limited, swing exceeds a limited position, a truck body and a spiral mechanism are impacted, and personnel are possibly hurt due to the fact that the spiral swing is lack of an early warning and sudden stop device are solved. Comprising a side spiral swing-out limiting proximity switch and a side spiral swing-back limiting proximity switch which are installed at the side spiral swing-out limiting position and the side spiral swing-back limiting position of the on-site mixed loading granular ammonium nitrate fuel oil explosive truck respectively, a side spiral return proximity switch is further installed below a spiral swing arm of a side spiral, and an emergency stop button is installed on the spiral swing arm. The spiral tail part of the side spiral is also provided with a buzzer; a control module is further installed on the vehicle and connected with the three proximity switches, the emergency stop button and the buzzer through wires. The side spiral limiting device is used for limiting and protecting the side spiral of the on-site mixed loading granular ammonium nitrate fuel oil explosive truck.

Description

Technical Field

[0001] The utility model provides a spiral protection device for on-site mixed loading granular ammonium nitrate fuel oil explosive trucks, belonging to the technical field of spiral protection for explosive trucks. Background Technique

[0002] The on-site mixed loading granular ammonium nitrate fuel oil explosive truck is a special equipment for on-site mixing and loading ammonium nitrate fuel oil explosive in open-pit mines. The operation mode of this truck is generally that the driver first drives the vehicle to move, and after the vehicle arrives at the position, the spiral medicine outlet is aligned with the blast hole position by operating the side spiral swing switch. Then, according to the instructions of the ground personnel, the charge amount is input into the computer, and the start button is pressed to start charging. After the charging is completed, the ground operator checks the charge amount. After the charge amount meets the requirements, the driver moves the vehicle to the next blast hole for the next charging. During this process, due to the limitation of the driver's line of sight, occasionally the driver may not fully master the ground situation, resulting in misoperation. At this time, when the spiral swings or the vehicle moves, the charging spiral is very likely to cause harm to the ground personnel. In addition, during the spiral swing process, due to the absence of a mechanical limit device, which is mastered by the driver through the rearview mirror, the spiral often swings beyond the limited position, resulting in impacts on the vehicle body and the rotating mechanism. Content of the Utility Model

[0003] In order to solve the problems that the spiral swing of the existing on-site mixed loading granular ammonium nitrate fuel oil explosive truck has no limit, resulting in the swing exceeding the limited position and causing impacts on the vehicle body and the spiral mechanism, and the spiral swing may cause harm to personnel due to the lack of early warning and emergency stop devices, the utility model proposes a spiral protection device for on-site mixed loading granular ammonium nitrate fuel oil explosive trucks.

[0004] The technical solution adopted by the utility model is as follows: A spiral protection device for on-site mixed loading granular ammonium nitrate fuel oil explosive trucks includes a side spiral swing-out limit proximity switch and a side spiral swing-back limit proximity switch respectively installed at the swing-out and swing-back limit positions of the side spiral of the on-site mixed loading granular ammonium nitrate fuel oil explosive truck. A side spiral return proximity switch is also installed below the spiral swing arm of the side spiral. An emergency stop button is also installed on the spiral swing arm. A buzzer is also installed at the spiral tail of the side spiral;

[0005] A control module is also installed on the on-site mixed loading granular ammonium nitrate fuel oil explosive truck. The control module is respectively connected to the side spiral swing-out limit proximity switch, the side spiral swing-back limit proximity switch, the side spiral return proximity switch, the emergency stop button and the buzzer through wires. The control module is also respectively connected to a side spiral swing solenoid valve and a side spiral lift solenoid valve.

[0006] The side spiral swing-out limit proximity switch and the side spiral swing-back limit proximity switch are installed on both sides of the rotating shaft of the side spiral close to the side spiral.

[0007] Adjusting and locking nuts are provided at the installation positions of the side spiral swing-out limit proximity switch, the side spiral swing-back limit proximity switch, and the side spiral return limit proximity switch, and the position of the proximity switch is finely adjusted through the adjusting and locking nuts.

[0008] The control module is also connected to the industrial tablet computer installed in the on-site bulk-loaded granular ammonium nitrate fuel oil truck through a communication cable.

[0009] The control module is also connected to the start button and the stop button on the through wires.

[0010] The control module uses a PLC as the main controller.

[0011] The side spiral swing-out limit proximity switch, the side spiral swing-back limit proximity switch, and the side spiral return limit proximity switch adopt inductive proximity switches.

[0012] The beneficial effects of the present utility model compared with the prior art are as follows: By combining hardware and software, the present utility model adds components such as side spiral limit detection switches, emergency stop switches, and buzzer alarms, and uses the PLC to effectively interlock and give early warnings with the swing of the side spiral, can detect the overlimit of the position of the side spiral swing, and can give early warnings to the rear before the side spiral performs swing operations, achieving double protection for the safety of equipment and personnel. Description of the Drawings

[0013] The following further describes the present utility model in conjunction with the drawings:

[0014] Figure 1 is the structural schematic diagram of the present utility model installed on the on-site bulk-loaded granular ammonium nitrate fuel oil truck Figure 1 ; [[ID=�7]]

[0015] Figure 2 is the structural schematic diagram of the present utility model installed on the on-site bulk-loaded granular ammonium nitrate fuel oil truck Figure 2 ;

[0016] Figure 3 is the structural schematic diagram of the protection device of the present utility model Figure 1 ;

[0017] Figure 4 is the structural schematic diagram of the protection device of the present utility model Figure 2 ;

[0018] Figure 5 is the circuit schematic diagram of the present utility model;

[0019] In the figure: 1 is the side helix, 2 is the helical swing arm, 3 is the rotating shaft, 4 is the limit proximity switch for the side helix to swing out, 5 is the limit proximity switch for the side helix to swing back, 6 is the home proximity switch for the side helix, 7 is the emergency stop button, 8 is the buzzer, and 9 is the adjustment locking nut. Detailed implementation mode

[0020] As Figures 1 to 5 shown, the present utility model provides a spiral protection device for a on-site mixed loading granular ammonium nitrate fuel oil truck. The device is installed on the on-site mixed loading granular ammonium nitrate fuel oil truck and includes a mechanical limit part and an electrical control part. The electrical control part is interlocked with the control module of the explosive truck. The mechanical limit part includes a side helix swing-out limit proximity switch 4 arranged at the extreme position of the helix swing-out (rotating 180° outward) and a side helix swing-back limit proximity switch 5 at the extreme position of the helix swing-back. And a buzzer 8 is arranged at the tail of the helix. A side helix home proximity switch 6 is installed below the helical swing arm 2, and an emergency stop button 7 is also installed on the helical swing arm 2. The electrical control part uses a PLC to control the signals of the three proximity switches and is interlocked with the control system of the side helix 1 through the signals of the above proximity switches to control the swing of the side helix 1.

[0021] The specific method is as follows:

[0022] An inductive proximity switch can sense metal objects within an effective area. An inductive proximity switch is added when the side helix 1 swings out to the extreme position (rotating 180° outward). When the side helix 1 swings out to the extreme position, the proximity switch can immediately transmit the induction signal to the PLC of the electrical control part, and the PLC controls to immediately cut off the swing-out signal of the side helix 1, thereby stopping the side helix 1 from continuing to swing. An inductive proximity switch is added when the side helix 1 swings back to the extreme position. When the side helix 1 swings back to the extreme position, the proximity switch can immediately transmit the induction signal to the PLC, and the PLC controls to immediately cut off the swing-back signal of the side helix 1, thereby stopping the side helix 1 from continuing to swing. Since during the swing of the side helix 1, the swing amplitude at the position close to the rotating shaft 3 is small, and the swing amplitude at the position far from the rotating shaft 3 is large and the inertia is large. Therefore, the swing-out and swing-back inductive proximity switches of the side helix 1 are installed at the position close to the rotating shaft 3, and the position of the proximity switch is finely adjusted by adjusting the locking nut 9 to achieve accurate detection and rapid stop.

[0023] A buzzer warning device 8 is added to the tail of the side helix 1. By programming the PLC control program, when the driver operates the helix swing handle, the system first emits a buzzer warning signal for 2 seconds. After 2 seconds, the electrical signal for controlling the helix swing is output to the mechanical device. Within these 2 seconds, it can remind the personnel around the vehicle to pay attention to safety. This design avoids potential safety accidents that may be caused by the driver operating the helix swing without noticing the personnel around the vehicle.

[0024] An emergency stop button 7 is added at the middle position of the spiral swing arm 2. This emergency stop button 7 is interlocked with the vehicle's control module. When people around the vehicle encounter an emergency, they can press this button, and the charging production control system will stop all control signal outputs, and all rotating components will stop working. This further ensures production and personnel safety.

[0025] An inductive proximity switch is added at the position where the side spiral 1 descends in place. After the side spiral 1 returns and enters the spiral locking position, the inductive proximity switch automatically transmits this signal to the PLC, and the system can accurately judge the safety status of the side spiral 1.

[0026] Regarding the specific structure of the present utility model, it should be noted that the connection relationships between the various component modules adopted by the present utility model are definite and achievable. Except for the special descriptions in the embodiments, the specific connection relationships can bring corresponding technical effects, and on the premise of not relying on the execution of corresponding software programs, the technical problems proposed by the present utility model can be solved. The models of the components, modules, and specific components, the connection methods between each other, and the conventional usage methods and predictable technical effects brought by the above technical features, except for the specific descriptions, all belong to the publicly disclosed content in patents, journal papers, technical manuals, technical dictionaries, and textbooks that those skilled in the art can obtain before the filing date, or belong to the prior art such as the conventional techniques and common general knowledge in the art, and do not need to be elaborated. This makes the technical solution provided in this case clear, complete, and achievable, and can reproduce or obtain the corresponding physical product according to this technical means.

[0027] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A spiral protection device for on-site mixed loading granular ammonium nitrate fuel oil explosive truck, characterized in that: It includes a side spiral extending limit proximity switch (4) and a side spiral retracting limit proximity switch (5) respectively installed at the extending and retracting limit positions of the side spiral (1) of the on-site mixed granular ammonium nitrate fuel oil truck. A side spiral homing proximity switch (6) is also installed below the spiral swing arm (2) of the side spiral (1). An emergency stop button (7) is also installed on the spiral swing arm (2), and a buzzer (8) is also installed at the spiral tail of the side spiral (1). A control module is also installed on the on-site mixed granular ammonium nitrate fuel oil truck. The control module is respectively connected to the side spiral extending limit proximity switch (4), the side spiral retracting limit proximity switch (5), the side spiral homing proximity switch (6), the emergency stop button (7) and the buzzer (8) through wires. The control module is also respectively connected to a side spiral swing solenoid valve and a side spiral lifting solenoid valve.

2. The spiral protection device for on-site mixed loading granular ammonium nitrate fuel oil explosive truck according to claim 1, wherein: The side spiral extending limit proximity switch (4) and the side spiral retracting limit proximity switch (5) are installed on both sides of the rotating shaft (3) of the side spiral (1) close to it.

3. The spiral protection device of an on-site mixed loading granular ammonium nitrate fuel oil truck according to claim 1, characterized in that: Adjusting and locking nuts (9) are provided at the installation positions of the side spiral extending limit proximity switch (4), the side spiral retracting limit proximity switch (5) and the side spiral homing proximity switch (6), and the positions of the proximity switches are finely adjusted through the adjusting and locking nuts (9).

4. The spiral protection device for on-site mixed loading granular ammonium nitrate fuel oil explosive truck according to claim 1, wherein: The control module is also connected to an industrial tablet computer installed in the on-site mixed granular ammonium nitrate fuel oil truck through a communication cable.

5. The spiral protection device of the on-site mixed loading granular ammonium nitrate fuel oil explosive truck according to claim 1, wherein: The control module uses a PLC as the main controller.

6. A spiral protection device for an on-site mixed loading granular ammonium nitrate fuel oil explosive truck according to any one of claims 1-5, characterized in that: The side spiral extending limit proximity switch (4), the side spiral retracting limit proximity switch (5) and the side spiral homing proximity switch (6) use inductive proximity switches.

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