JPS6363305B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a remote engine starting device suitable for work sites using engine welders or power-generating welding machines (hereinafter referred to as working machines).

Prior Art and Problems Work equipment has a structure in which it is not possible to start or stop the diesel engine by remote control. Therefore, work sites where work equipment is used (for example,
At sites where work equipment and workers work far apart, such as bridge construction sites and high-rise steel frame work sites, workers who are working far away from the work equipment can operate the work equipment whenever necessary. , the work equipment must be shuttled to and from the work site. In this way, working while operating the work equipment,
This is not at all desirable, as it not only results in inefficiency but also the risk of performing the wrong work.

The present invention has been made in view of the above-mentioned problems, and allows a worker who is working far away from the work machine to stay at the work place without having to go back and forth between the work machine and the work place. The purpose is to propose a convenient remote engine starting device that allows remote control of work equipment.

Means for Solving the Problems The means taken by the present invention to achieve the above object is to attach the battery pole to the welding rod holder of the power generation welding machine, and to attach the preheating plug, decompressor, and cell to the ground grip of the power generation welding machine. A starting circuit consisting of a motor switch and a relay is connected through a main switch, and the main switch is connected to a B contact for the holder, a B contact for the starting circuit, and a dynamo using these B contacts. It consists of a connected main switch coil and an A contact for the earth grip that works in reverse at the same time as the two B contacts, and starts the engine by bringing the holder or welding rod into contact with the base metal on the earth grip side. This means that it has been configured to be possible.

Operation: The holder or welding rod is positioned as one contact of the switch, which is one of the structural units in the circuit of the entire starting device, and the holder or welding rod and the base metal connected to the earth grip are positioned as one contact of the switch. If the holder or welding rod is intentionally brought into contact with the earth grip or base metal,
The battery becomes conductive and the voltage from the battery is applied to the engine starting circuit, allowing remote starting of the engine.

In other words, since the battery voltage is applied to the welding rod from B contact _S1 of the main switch, through the current relay CRX, the welding cap tire cord 5, and then through the holder, there is no contact between the holder or the welding rod and the ground grip. That is, the contact between the holder or the welding rod and the base metal results in a state of conduction. on the other hand,
Battery B voltage is captire cord 12
At the same time, the main switch's B contact
Starting circuit preheating plug via S ₂ , timer T ₁ ,
Decompression, timer T ₂ is pressurized. timer
At time _T1 , the A contact of relay _X3 closes, and the starter motor switch SW, which controls the opening and closing of the starting contact of the starter motor, operates, and the engine idles.

A timer is set when the engine starts idling.
Contact A of T ₂ closes, activating relay X ₂ , and
The engine starts by opening the contact, cutting off the circuit of solenoid SR ₃ , returning the decompression to its original state, and increasing the pressure in the engine cylinder.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The welding rod 1 constitutes a tool for welding work together with a welding captire cord 5, a holder 11, an earth grip 8, a captire cord 12, etc., and is also a member for forming a welding current circuit. , which is held between the holders 11 and used for welding and joining base materials. The preheating plug 2 includes a decompressor 3, starter motor switch SW, relays X ₂ , X ₃ ,
It is a member that forms a starting circuit for the engine 10 together with the timers T ₁ , T ₂ , etc.
It is a member to facilitate the starting of the engine, and has a structure that is screwed onto the head of the cylinder of the engine and holds a nichrome wire, and the fuel injected into the cylinder by the red heat of the nichrome wire when energized. to easily start the engine 10. The decompressor 3 is a member that forms a starting circuit for the engine 10 together with the preheating plug 2 and the like, and
A member that reduces the internal cylinder pressure of the engine 10 and facilitates rotation of the engine.
The valve structure is built into the head of the cylinder so that a valve hole opened and opened in the head of the cylinder 0 is elastically opened and closed by a spring, and by opening the valve hole, the engine 10 is accelerated. When energy is applied, the valve hole is closed and the injected fuel is ignited and exploded. Preheating plug 2, decompression 3, cell motor switch SW, relay X ₂ , X ₃ , timer
The starting circuit for the engine 10 formed by T ₁ , T _{2 ,} etc. connects the preheating plug 2, relay X ₃ , timer T ₁ , decompression ₃ , and timer T ₂ in parallel, and connects the relay Connect starter motor _{switch SW} to ₁ and connect relay It is formed so that the voltage of battery B is applied to the captire cord and the starting circuit is also applied at the same time. Power generation welding machine 4
This machine constitutes a power generation device together with the engine 10, and is a machine for supplying electric power necessary for welding, and is composed of a rotor and a core, and is connected to the engine 10. In the power generation welding machine 4, the base end of a welding captire cord 5 having a holder 11 for the welding rod 1 at the tip is connected via a current relay CRX, and the base end of a welding captire cord 12 having a grounding grip 8 at the tip is connected. They are connected via the A contact CB of the main switch SW. The welding captire cord 5 is a member that constitutes a tool for welding work together with the welding rod 1, holder 11, ground grip 8, etc., and is relative to the captire cord 12 and is flexible. A holder 11 for the welding rod 1 is provided at the tip, a current relay CRX is interposed in the middle, and the base end is connected to the power generation welding machine 4. Welding captire cord 5 is a current relay
The configuration is such that an intermediate part from the CRX to the power generation welding machine 4 is connected to the pole of the battery B via the B contact _S1 of the main switch SW, and voltage is applied from the battery. The current relay CRX interposed in the welding captire cord 5 is A
It has a contact P, and its A contact is connected to the pole of the battery B and the relay X ₁ for the speed change control circuit of the engine 10. The wire 6 is a member for transmitting the operation of the solenoid SR ₁ for accelerating the engine 10 to the engine 10, and is constructed by passing the wire through a spring-like flexible member, and connects the solenoid SR ₁ and the engine throttle valve. 9 so that the operation of the solenoid SR ₁ is transmitted to the engine throttle valve 9. The dynamo 7 is a small generator that generates electricity by the rotation of the engine, and is connected to the pole of the battery B, as well as the main switch coil CL and the engine 10.
It is connected to the pole of battery B through the starting circuit for replenishing the consumed capacity of battery B and is used to maintain a constant voltage. The ground grip 8 is a tool for welding work together with the welding rod 1, the welding cap tire cord 5, the holder 11, etc., and is relative to the holder 11, and also serves as a base material for forming a welding current circuit. The holding member consists of a grip with a strong spring. The ground grip 8 is installed at the tip of the captire cord 12, and connects the captire cord to the A contact point CB of the main switch SW.
The captire cord is connected to the power generation welding machine 4 through the engine 10's speed change control circuit relay _X1 , the relay _X5 , the B contact _S1 of the main switch SW, etc. A welding current circuit is formed by connecting to the pole and holding the base material. The main switch main switch SW has a structure with a spring and has an A contact CB which is interposed in the captire cord 12, a main switch coil CL which connects the dynamo 7 and the starting circuit for the engine 10, and when the A contact CB is closed. Two B contacts S ₁ that open in reverse at the same time,
S ₂ and one B contact for holder 11.
Connect S ₁ to the pole of battery B and the welding cap tire cord 5, and connect the other B contact for the starting circuit S ₂
is connected to the captire cord 12 and the starting circuit for the engine 10. The engine throttle valve 9 is connected by a wire 6 to a solenoid SR ₁ for accelerating the engine 10, and the operation of the solenoid controls a pump that injects fuel into the cylinder. engine 10
A power generation welding machine 4 is connected to the power generation welding machine 4, and the power generation welding machine is driven to generate electric power necessary for welding.
The holder 11 is a member that constitutes a tool for welding work together with the welding rod 1, welding cap tire cord 5, etc., and is also a member that holds the welding rod 1 for forming a welding current circuit. 8, the grip has a surface coated with an insulating material to prevent electric shock, and is configured to firmly hold the welding rod 1 with spring force. The holder 11 is disposed at the tip of the welding captire cord 5, connects the captire cord to the power generation welding machine 4 via the current relay CRX, and
By connecting to the pole of the battery B via the contact _S1 , a welding current circuit is formed when the welding rod 1 is brought into contact with the base metal on the ground grip 8 side. Captire code 12 is
The welding rod 1, holder 11, earth grip 8
It is a member that constitutes a tool for welding work together with other parts, and is a member that supplies welding current to the ground grip 8, which is relative to the welding cap tire cord 5, and is made of flexible thick coated copper. Composed of lines. The captire cord 12 has a ground grip 8 at the tip, and the base end is connected to the main switch.
It is connected to the power generation welding machine 4 through the A contact CB of the SW, and the main switch is connected from the earth grip 8.
Connect the intermediate part leading to the SW to the pole of the battery B via the speed change control circuit relay X ₁ of the engine 10, the same relay X ₅ , the B contact S ₁ of the main switch main switch, etc., and hold the base material with the ground grip 8. If possible, a welding current circuit is formed.

Next, engine starting will be explained.

The voltage of battery B is applied to the tip of welding rod 1 from contact S ₁ of main switch SW to current relay CRX.
(However, the A contact point P remains open.) Since the pressure is applied through the welding captire cord 5 and further through the holder 11 provided at the tip of the cord, the holder 11 or the welding rod 1 and the ground grip 8 That is, when the holder 11 or the welding rod 1 and the base metal are brought into contact, they become electrically conductive. On the other hand, the voltage of battery B pressurized to the captire cord 12 on the ground grip 8 side is applied to the preheating plug 2, relay X ₃ , timer T ₁ and decompression 3 of the starting circuit via the B contact S ₂ of the main switch SW. , timer _T2 is pressurized at the same time. When the timer _T1 expires, the A contact of relay _X3 closes, the starter motor switch SW, which controls opening and closing of the starting contact of the starter motor, operates, and the engine 10 idles. engine 10
At the time when the idling has increased, timer T ₂ closes the A contact, activates the relay X ₂ , and opens the B contact.
The engine 10 is started in order to cut off the circuit of the solenoid SR ₃ , return the decompressor 3 to its original state, and increase the pressure in the cylinder of the engine 10. The timers _T1 and _T2 and set times are set respectively taking into consideration the timing of preheating and idle rotation (lubrication effect) of the starter motor switch SW.
Next, the dynamo 7 is generated by starting the engine 10.
When the main switch coil CL is energized by DC, the A contact CB of the main switch SW is closed, and the welding rod 1 - holder 11 - welding cap tire cord 5 - power generation welding machine 4 (throttle 9 and engine 10 ) - A circuit called earth grip 8 is formed and ready for welding. Here, because of the diode, no current flows through the stopped main switch SW, and the B contacts _S1 and _S2 of the switch are simultaneously opened, cutting off the current to the starting circuit. Therefore, all the devices do not operate except when starting from a stopped state, that is, while the engine 10 is rotating.

The engine 10, which has been started in the manner described above and has entered low-speed operation, is idling, has finished its warm-up operation, and is ready for work.

The following is a supplementary explanation for reference.

Next, the workers begin welding work,
First, when the tip of the welding rod 1 is brought into contact with the grounding grip 8, the welding rod 1 and the grounding grip 8 become conductive, and the current flowing through the welding cap tire cord 5 closes the A contact P of the current relay CRX, and the current from the battery B is Move solenoid SR ₁ and connect engine throttle valve 9 via wire 6.
to accelerate the engine 10. At the same time, the wire 6 to the engine throttle valve 9 is locked by the solenoid SR ₂ , and the micro switch is activated.
It is configured so that the circuit of solenoid SR ₁ is cut off by the operation of LS. When the engine 10 is to be reduced in speed upon completion of the welding work, the contact between the welding rod 1 and the base metal is maintained. That is, welding rod 1
When welding, the welding rod 1 and the base metal become short-circuited and the voltage between them becomes zero, so the B contact of relay X ₅ forms a circuit, and the A contact of timer T ₃ is closed, and battery B activates solenoid SR ₁ , which presses against the spring and releases the locked state. As a result of the above, it is possible to remotely control the increase/decrease in rotation of the engine 10 only by operating the welding rod 1 using the change in voltage on the secondary side (84V-24V-0V) as a signal source.

Effects of the Invention Since the present invention is configured as described above, the holder or welding rod is positioned as one contact point of a switch among the structural units in the circuit of the entire starting device, and the holder or welding rod and the grounding grip are connected to each other. When the connected base metal is positioned as one contact point of the switch, and the holder or welding rod is intentionally brought into contact with the earth grip or the base metal, a conductive state is established and the voltage of the battery is transferred to the engine starting circuit. It is pressurized and the engine is started remotely.

Therefore, a worker working far away from the work equipment can remotely start the stop engine of the work equipment without having to go to the work equipment, thereby reducing work efficiency and errors. It can prevent work etc.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the remote starting device of the present invention, and FIG. 2 is a circuit diagram. 1...Welding rod, 2...Start circuit preheating plug, 3...
Decompression of starting circuit, 4...Power generation welder, 7...Dynamo, 8...Earth grip, 10...Engine, 1
1...Holder, SW...Cell motor switch,
X ₂ , X ₃ ...Relay for starting circuit, main SW...main switch, S ₁ ...B contact for holder, S ₂ ...B contact for starting circuit, CL...main switch coil, CB...A contact.

Claims (1)

[Claims] 1. Connect the battery pole to the welding rod holder of the power generation welding machine, and the starting circuit consisting of the preheating plug, decompressor, starter motor switch, and relay to the earth grip of the power generation welding machine, both via the main switch, The main switch is connected to the B contact for the holder, the B contact for the starting circuit, the main switch coil connected to the dynamo for these B contacts, and the two B contacts for the earth grip to operate in reverse at the same time. A remote starting device for an engine, which is configured to be able to start the engine by bringing the holder or welding rod into contact with the base material on the ground grip side.