JP2022100481A - Fire door escape mechanism and conveyor line with the escape mechanism - Google Patents

Abstract

To provide a fire door escape mechanism that can automatically retreat a device or the like that must be placed in a movement space of a fire door from the movement space to secure a space for the fire door to operate even if power or the like is cut off in an emergency.SOLUTION: A fire door escape mechanism 1 for retreating an installation member 3 arranged inside and outside a movement space S of a fire door 2 includes: an actuator 10 that allows the installation member 3 to move forward and backward between a position P1 on the movement space S and a retreat position; electrical retreat means 20 that drives the actuator of the installation member 3 when the fire door 2 operates, and is provided with a power supply line and an electric signal line for moving the installation member 3 from the position P1 on the movement space S to the retreat position; and mechanical retreat means 40 that automatically and non-electrically moves the installation member 3 from the position P1 on the movement space S to the retreat position, when the power supply line and/or the electric signal line of the electrical retreat means 20 is cut off during the operation of the fire door 2.SELECTED DRAWING: Figure 1

Description

The present invention retracts equipment, luggage, etc. (hereinafter, devices, etc.) located in the moving space of the fire door from the moving space when the fire door such as a so-called fire shutter, explosion shutter, or fire door is operated. Regarding the fire door escape mechanism and the conveyor line equipped with the escape mechanism.

In facilities such as factories, schools, hospitals, halls, and commercial facilities, openings where things and people usually come and go with the aim of minimizing the transmission of damage such as fires and explosions by partitioning the space. A fire door such as a fire shutter may be provided in the part. Since the fire door must completely close the opening when it is operated, it is desirable that the moving space is not provided with any obstacles.

Then, for example, in a product manufacturing factory, a conveyor line that conveys the product while following the manufacturing process penetrates the opening provided with the fire shutter as the fire door, and is divided into a dangerous area and a safety area in an emergency. It is often arranged so as to straddle both areas.

Therefore, the upstream conveyor and the downstream conveyor arranged apart from each other so as to secure the moving space of the fireproof shutter, and the transport position and the fireproof shutter which are located in the moving space and connect the upstream conveyor and the downstream conveyor. A conveyor line having a roller-shaped (Patent Document 1) or plate-shaped (Patent Document 2) connecting member supported by a conveyor frame or the like so as to swing between the retracted position and the retracted position during operation has also been proposed. ing.

Japanese Unexamined Patent Publication No. 2007-254085 Japanese Unexamined Patent Publication No. 2015-147660

To the last, these connect parts of the conveyor line that can intervene and retract the connecting member by swinging in the connecting part between the most downstream of the upstream conveyor and the most upstream of the downstream conveyor are located in the moving space. The idea is. In reality, in facilities such as factories and buildings, there are some situations where furniture, luggage, products, digestive organs, etc. have to be temporarily placed on the moving space due to space limitations. Even such a problem cannot be solved.

In addition, among the fireproof doors, the fireproof shutter and the explosionproof shutter are basically configured to operate with electricity and signals, and are configured to operate manually when power such as electricity or electric signals are cut off. However, in the event of an emergency such as a disaster, even if the power such as electricity to operate it or the electric signal is cut off, it is necessary to have a means to operate it automatically instead of manually. Needless to say, it is desirable for safety.

Therefore, the present invention automatically retracts a device or the like that must be placed in the moving space of a fire door from the moving space even when power such as electricity or an electric signal is cut off in an emergency. It is an object of the present invention to provide a fire door escape mechanism capable of securing a space for operating a fire door and a conveyor line equipped with the escape mechanism.

In order to achieve the above-mentioned object, the fire protection door escape mechanism of the present invention is always arranged inside and outside the moving space when the fire protection door is operated, which is always stored with the moving space open during operation. It is a fire protection door escape mechanism provided with an evacuation mechanism for retracting the erection member from the position on the moving space, and as the evacuation mechanism, the evacuation position where the erection member is moved in the horizontal direction with the position on the moving space. An actuator that can move forward and backward between the two, and a power supply line and an electric signal line for driving the actuator of the erection member when the fire protection door is activated and moving the erection member from the moving space to the retracted position. And the erection member is automatically and non-electrically moved when the power supply line and / or the electric signal line of the electric evacuation means is interrupted when the fire protection door is operated. It is characterized by providing a mechanical evacuation means for moving the evacuation position from the space to the evacuation position.

Further, the actuator of the erection member includes a rod directly or indirectly connected to the erection member, and resists the force of contracting the rod by the mechanical retracting means by the fluid as the power supplied to the cylinder. A rod type that drives the rod to extend and position the erection member on the moving space of the fire door, and to contract the rod and retract the erection member from the moving space of the fire door. It is characterized by being a cylinder.

Further, the mechanical retracting means guides the erection member to the retracting position while contracting the rod by its own weight and guiding the erection member to the retracting position, or contracting the rod by the elastic force of the elastic member. It is characterized by being an elastic member.

Further, the electrical retracting means is a first power supply that connects a supply source of a fluid to be power, the supply source and a rod type cylinder of the erection member, and supplies power for extending the rod. A first power supply line that connects a line, the supply source and a rod type cylinder of the erection member, and supplies power for contracting the rod, and a first power supply line that opens and closes the first power supply line. The flow path switching valve opens and closes the second power supply line, and the fluid connected to the first flow path switching valve and supplied from the supply source is used to operate the first flow path switching valve. The first mode in which the first flow path switching valve is opened to supply the fluid from the first power supply line to the rod type cylinder of the erection member, and the fluid supplied from the supply source are described. It is characterized by comprising an electromagnetic valve arranged so as to be able to switch between a second mode of supplying the rod type cylinder of the erection member directly from the second power supply line by a drive signal from the electric signal line. ..

The electrical retracting means further connects the supply source and the actuator of the fireproof door, and supplies power for deactivating the actuator of the fireproof door, the third power supply line, said. In the second power supply line, it is provided so as to be branched on the downstream side in the power supply direction from the position of the solenoid valve, connects the supply source and the actuator of the fireproof door, and operates the actuator of the fireproof door. The solenoid valve is provided with a fourth power supply line for supplying power for the operation, a second flow path switching valve for opening and closing the third power supply line, and the solenoid valve is the supply source in the first mode. The fluid supplied from the above is also used for operating the second flow path switching valve, the second flow path switching valve is closed, and the fluid is supplied from the third power supply line to the actuator of the fire protection door. However, the second mode is characterized in that the fluid supplied from the supply source can be switched so as to be supplied from the fourth power supply line to the actuator of the fire protection door. ..

According to the fire door escape mechanism of the present invention configured as described above, even if the electric evacuation means is hindered when the fire door is operated, the fire door can be moved by the mechanical evacuation means. It is possible to retract the erection member arranged inside and outside the space from the moving space, and further, it is possible to drive the actuator of the fire door at the same time.

Further, the conveyor line of the present invention includes an upstream conveyor and a downstream conveyor arranged so as to be spaced apart from each other with a moving space for the fire door to move up and down or to move forward and backward in a straight line, and any of the above-mentioned fire door escapes. The erection member is provided with a mechanism, and the erection member is always arranged so as to be suspended from the upstream side conveyor and the downstream side conveyor, and a pair of sides that sandwich the work to be conveyed and pass it from the upstream side conveyor to the downstream side conveyor. It is characterized by being an intermediate conveyor equipped with a belt.

According to the conveyor line of the present invention configured as described above, the rod of the actuator is always extended and the intermediate conveyor as the erection member is arranged so as to be bridged between the upstream side conveyor and the downstream side conveyor. The work to be installed, placed on the upper surface of the upstream conveyor, and driven with the work conveyed to the downstream end sandwiched between the pair of side conveyors, placed on the upstream end of the downstream conveyor, and downstream. The side conveyor can transport the work passed from the intermediate side conveyor further downstream, and in an emergency, the intermediate conveyor is fireproofed by retracting the rod of the actuator and retracting the intermediate conveyor from the moving space of the disaster prevention shutter. It is possible to avoid obstructing the lowering of the shutter.

As described above, according to the fire door escape mechanism of the present invention and the conveyor line provided with the escape mechanism, a device or the like that has to be placed in the moving space of the fire door can be used for power such as electricity or an electric signal in an emergency. When the fire door is shredded, the mechanical evacuation means can be driven without any special control, and the device or the like is automatically retracted from the moving space of the fire door to secure a space for the fire door to move. Can be done. Therefore, there is no limitation on the space layout at all times, and it is possible to freely lay out. Furthermore, it can be driven together with the actuator of the fire door.

Explanatory drawing of the main part at the time of non-operation (always) in 1st Embodiment of the fire door escape mechanism of this invention. It is explanatory drawing of the main part at the time of operation (emergency) in the fire door escape mechanism of FIG. Explanatory drawing of the main part at the time of non-operation (always) in the 2nd Embodiment of the fire door escape mechanism of this invention. FIG. 3 is an explanatory view of a main part of the fire door escape mechanism of FIG. 3 during operation (emergency). An explanatory view of a main part of the fire door escape mechanism in the embodiment of the conveyor line of the present invention when it is not operating (always). FIG. 5 is an explanatory diagram of a main part when the fire door escape mechanism in the conveyor line of FIG. 5 is operating (emergency).

The first embodiment of the fire door escape mechanism 1 of the present invention will be described with reference to FIGS. 1 and 2. The fire door escape mechanism 1 of the present embodiment always operates the shutter-shaped fire door (fire shutter) 2 housed in the upper storage portion (not shown) in order to open the moving space S during operation. A retracting mechanism 4 for retracting the erection member 3 arranged over the inner and outer regions of the moving space S from the moving space S is provided.

In the present embodiment, the erection member 3 has a mounting portion 5 on which a desired device or the like can be mounted, and the previously described mounting portion 5 is located between the floor surface 6 and the previously described mounting portion 5. A caster 7 that assists the slide movement is arranged.

Further, the evacuation mechanism 4 places the erection member 3 on which the device or the like is mounted on the above-mentioned placement portion 5 at the position P1 on the moving space S, the erection member 3 and the device or the like mounted on the erection member 3. The actuator 10 is provided so as to be able to move forward and backward with and from the retracted position P2 retracted from the moving space S. The actuator 10 is an air cylinder 10 including a rod 11 whose tip is directly connected to the mounting outer wall of the erection member 3, and the rod is powered by air supplied from an air pump as a supply source 13 to the cylinder 12. 11 is configured to expand and contract.

Then, the retracting mechanism 4 contracts the rod 11 of the air cylinder 10 of the erection member 3 when the fire protection door 2 is operated, and moves the erection member 3 from the position P1 on the moving space S to the retracting position P2. An electrical evacuation means 20 provided with a power supply line and an electric signal line for causing the fire protection door 2, and a power supply line and / or an electric signal line of the electric evacuation means 20 when the fire protection door 2 is operated (both not shown). Is a machine that automatically and non-electrically contracts the rod 11 of the air cylinder 10 of the erection member 3 and moves the erection member 3 from the position P1 on the moving space S to the retracted position P2. It is provided with a target evacuation means 40.

First, the mechanical evacuation means 40 will be described. In the mechanical evacuation means 40 of the present embodiment, the mounting outer wall of the erection member 3 and the base 8 arranged for mounting the air cylinder 10 are mounted. As an elastic member 41 which is provided between the air cylinder 10 and acts to resist the pressure of the air supplied into the air cylinder 10 and to guide the erection member 3 to the retracted position P2 while contracting the rod 11. It is composed of a coil spring.

On the other hand, the electric evacuation means 20 has a first power supply line L1 composed of a pipe member for supplying air for extending the rod 11 between the supply source 13 and the air cylinder 10, and the rod. A second power supply line L2, which is a pipe member for supplying power for contracting the eleven, is branched and provided. The first power supply line L1 is provided with a first flow path switching valve 23 for opening and closing the supply line L1. In the present embodiment, the first flow path switching valve 23 is a spring 24 when air is supplied from the first power supply line L1 through the solenoid valve 30 and the first valve operation line VL1 which will be described in detail later. It becomes an open state (see FIG. 1) against the elastic force, the operation of the solenoid valve 30 is switched as shown in FIG. 2, and when there is no air supply, the elastic force of the spring 24 prevails and the spring 24 becomes a closed state. It is configured in.

Then, in the electric retracting means 20 in the present embodiment, the air supplied from the supply source 13 to the second power supply line L2 is passed through the first valve operating line VL1 to the first flow path switching valve. A first mode in which the solenoid valve 30 used for the switching operation of the 23 opens the first flow path switching valve 23 and supplies the air from the first power supply line L1 to the air cylinder 10, and the first mode. The second mode in which the flow path switching valve 23 of 1 is closed and the air cylinder 10 is directly supplied to the air cylinder 10 from the second power supply line L2 can be switched by an electric signal input from the electric signal line. It is installed. Specifically, in the present embodiment, when an electric signal is input, the solenoid valve 30 enters the first mode (fire door non-operation mode) against the elastic force of the spring 31, as shown in FIG. When there is no input of an electric signal, as shown in FIG. 2, the elastic force of the spring 31 is superior, and the second mode (fire door operation mode) is set. In the present embodiment, as the electric signal, the ON / OFF signal of the switch of the emergency button and the ON / OFF signal of the operating means of the fire door 2 are shared, or the fire door escape mechanism 1 is described. An ON / OFF signal of a dedicated switch provided for energizing the solenoid valve 30 may be used.

As shown in FIG. 1, the fire door escape mechanism 1 of the present embodiment configured as described above always operates the supply source 13 and causes the solenoid valve 30 to be operated by an electric signal from the electric signal line. In the first mode, the air supplied from the supply source 13 to the solenoid valve 30 is placed on the VL1 side of the first valve operating line, and the air pressure causes the first flow path switching valve 23 to have the elastic force of the spring 24. Press against the force to open it. As a result, air is supplied to the air cylinder 10 through the first power supply line L1 and the rod 11 is extended while stretching the coil spring 41 of the mechanical retracting means 40, so that the rod 11 is mounted on the mounting portion 5. The device or the like can be positioned at the position P1 on the moving space S where the fire door 2 moves up and down. In this first mode, since the second power supply line L2 is closed by the solenoid valve 30, no air is supplied to the air cylinder 11 through the second power supply line L2.

Then, when the fire door 2 is operated, the electric retracting means 20 is not hindered, and when the fire door 2 is operated, the solenoid valve 30 is switched to the second mode by the electric signal input from the electric signal line. Then, as shown in FIG. 2, the air supplied to the solenoid valve 30 is passed through the second power supply line L2, the rod 11 of the air cylinder 10 is contracted by the air pressure, and the mechanical evacuation is performed. While contracting the coil spring 41 of the means 40, the erection member 3 is moved to the retracted position P2. In the second mode, the first power supply line L1 is closed due to the switching operation of the solenoid valve 30 to the second mode, so that the first power supply line L1 for the air cylinder 11 is closed. There is no air supply through.

Then, when the supply source 13 itself of the electric evacuation means 20 and the air supply lines L1 and L2 are hindered and air is not supplied, even if the solenoid valve 30 is in the first mode, Since the air that presses the first flow path switching valve 23 against the elastic force of the coil spring 41 of the mechanical retracting means 40 is not supplied, the first flow path switching valve 23 is closed and the air cylinder 10 is closed. There is also no supply of air through the first power supply line L1 to the above. Further, there is no supply of the air to the air cylinder 10 of the erection member 3 through the second power supply line L2. Therefore, the contraction force of the coil spring 41 of the mechanical retracting means 40 causes the rod 11 in the free state to contract, and the erection member 3 is moved from the position P1 on the moving space S of the fire door 2 to the retracting position P2. Evacuate.

Further, when the electric signal line of the electric retracting means 20 is disturbed and the electric signal is not input to the solenoid valve 30, the solenoid valve 30 is mechanically operated by the elastic force of the spring 31. Then, it switches to the second mode. Therefore, the first flow path switching valve 23 is closed, and the supply of the air through the first power supply line L1 is cut off.

Here, if the electric signal line is obstructed but the air supply from the supply source 13 is continued, the air is supplied to the second power supply line L2 through the solenoid valve 3. Therefore, air is supplied to the air cylinder 10 through the second power supply line L2, the rod 11 is contracted, and the erection member 3 is retracted to the retracted position P2.

Further, when the supply of air from the supply source 13 is cut off, as described above, the contraction force of the coil spring 41 of the mechanical evacuation means 40 is used to reduce the air pressure, resulting in a free state. The rod 11 is contracted, and the erection member 3 is retracted from the position P1 on the moving space S of the fire door 2 to the retracted position P2.

As described above, according to the fire door escape mechanism 1 of the present embodiment, even if the electric evacuation means 20 is hindered when the fire door 2 is operated, no special control is required. The mechanical evacuation means 40 makes it possible to retract the erection member 3 arranged inside and outside the moving space S of the fire door 2 from the position P1 on the moving space S.

In the first embodiment, only the configuration and operation of the fire door escape mechanism 1 are described, and the operation of the fire door 2 is not mentioned. When the fire door 2 operates, that is, in the case of the present embodiment, the fire shutter that is wound up and stored in the upper storage portion provided in the ceiling portion of the opening where objects and people come and go is lowered. When closing the opening, the erection member 3 needs to move toward the retracted position P2 so as not to hinder the operation of the fire shutter.

At this time, the timing and speed of operation of the fire door 2 and the moving speed of the erection member 3 to the retracting position P2 (particularly, the moving speed by the mechanical evacuation means 40) are such that the fire door 2 that operates is the erection member 3. It should be adjusted so as not to interfere with. For example, the fire door 2 may be provided with a sensor for detecting the presence or absence of a shield in the moving space S, and may be configured to operate when the sensor detects the evacuation of the erection member 3 from the moving space S. ..

Further, the electric evacuation mechanism 20 of the fire door escape mechanism 1 is connected to an actuator such as a switch for operating the fire door 2, and the fire door 2 is operated by using the fluid supplied from the supply source 13. It can also be. 3 and 4 show an example of a configuration in which the fire door 2 is also operated by using the fluid supplied from the supply source 13 as the second embodiment of the fire door escape mechanism 1 of the present invention. There is. Hereinafter, only the configuration and operation different from the fire protection escape mechanism 1 of the first embodiment will be described.

The fire door escape mechanism 1 of the second embodiment is provided to the electric evacuation means 20 of the fire door escape mechanism 1 of the first embodiment described above, and further between the supply source 13 and the actuator 15 of the fire door 2. In the third power supply line L3 for supplying air for holding the fire door 2 in a non-driving standby state and the second power supply line L2, power is supplied from the position of the electromagnetic valve 30. A fourth power supply that is branched on the downstream side in the direction, connects the supply source 13 and the actuator 15 of the fire door 2, and supplies power for operating the actuator 15 of the fire door 2. A line L4 is provided.

The third power supply line L3 is provided with a second flow path switching valve 33 for opening and closing the supply line L3. Like the first flow path switching valve 23, the second flow path switching valve 33 is also opened against the elastic force of the spring 34 when air is supplied from the third power supply line L3. When there is no air supply, the elastic force of the spring 34 is superior and the spring 34 is closed.

Then, the solenoid valve 30 opens the first flow path switching valve 23 and the second flow path switching valve 33 to supply the air from the first power supply line L1 to the air cylinder 10. The first mode (see FIG. 3) in which the air is supplied from the third power switching line L3 to the actuator 15 of the fireproof door 2, and the first flow path switching valve 23 and the second flow path switching. A second mode in which the valve 33 is closed and the air cylinder 10 is directly supplied from the second power supply line L2 and the actuator 15 of the fire protection door 2 is directly supplied from the fourth power supply line L4 (FIG. 4) and are arranged so as to be switchable by an electric signal input from the electric signal line. In the present embodiment, the solenoid valve 30 enters the first mode against the elastic force of the spring 31 when an electric signal is input, and when there is no electric signal input, the elastic force of the spring 31 prevails and the second mode is achieved. It is configured to be in 2 modes.

That is, in the first mode, the air supplied from the supply source 13 is also used to operate the second flow path switching valve 33, and the second flow path switching valve 33 is opened to open the third flow path switching valve 33. Air is supplied from the power supply line L3 of the above to the actuator 15 of the fire door 2, and in the second mode, the air supplied from the supply source 13 is supplied from the fourth power supply line L4 to the fire door. It is possible to switch so that it is also supplied to the actuator 15 of 2.

According to the fire door escape mechanism 1 of the present embodiment configured in this way, even if the electric evacuation means 20 is hindered when the fire door 2 is operated, the mechanical evacuation means 40 is used. It is possible to retract the erection member 3 arranged inside and outside the moving space S of the fire door 2 from the moving space S, and further, it is possible to drive the actuator 15 of the fire door 2 at the same time. It becomes.

In particular, if the timing of starting the operation of the fire door 2 and the timing required for the operation are adjusted in advance with the timing of completing the movement of the erection member 3 to the evacuation position P2 by the mechanical evacuation means 40, the electric evacuation means 20 When a problem occurs and the sensor for detecting the presence or absence of a shield in the moving space as described in the first embodiment does not operate, conventionally, the shield in the moving space S is manually avoided, and then the fire door is used. It is possible to ensure safety because the operator does not have to take any action in a dangerous place such as lowering 2. Furthermore, even the arrangement of the sensor may not be necessary.

The rod-type cylinder of the fire door escape mechanism 1 described above is not limited to an air cylinder, and for example, a hydraulic cylinder may be used. Further, the elastic member of the mechanical retracting mechanism 4 is arranged in the cylinder 12, and the rod 11 is contracted as the pressure of the fluid in the rod type cylinder is released by using a check valve or the like. It may be an elastic member arranged so as to guide the erection member 3 to the retracted position P2. Further, it is not limited to the elastic member that guides the erection member 3 to the retracted position P2 while contracting the rod 11, but is a weight member that guides the erection member 3 to the retracted position while contracting the rod 11 by its own weight. May be good.

Further, the fire door 2 is not limited to the so-called shutter type in which the door member moves up and down as described above. For example, the fire door 2 is a door type in which the plate-shaped door member slides in a line to close the opening. It may be a thing.

5 and 6 are an embodiment of the conveyor line 50 provided with the embodiment of the fire door escape mechanism 1 of the present invention. The conveyor line 50 of the present embodiment is formed by winding an endless circular top chain conveyor (not shown) around a drive roller on one end side (not shown) and a driven roller on the other end side (not shown). The two conveyors, the upstream side conveyor 51 and the downstream side conveyor 52, are arranged in series with the moving space S for raising and lowering the fire prevention door 2 separated from each other.

The erection member 3 is always suspended on the upstream conveyor 51 and the downstream conveyor 52, sandwiches the work to be conveyed that has been conveyed by the upstream conveyor 51, and moves to the downstream conveyor 52. It is an intermediate conveyor 55 composed of a pair of left and right side belts 54 arranged so that the belt surfaces face each other so as to deliver while measuring the timing of transportation.

Since the device provided with the intermediate conveyor 55 is also referred to as a cutting device and the configuration itself is known, the description of the configuration of the cutting device itself will be omitted, but in the present embodiment, a drive source such as a servomotor or the like is omitted. A pair of side belts 53, in which an endless belt is wound around a pulley (not shown) attached to a drive shaft (not shown) of 54 and a pulley (not shown) paired with the pulley, are compatible with each other in the width of the work. It is suspended from the top plate 57 so as to be separated from each other, and is suspended and arranged on the upstream side conveyor 51 and the downstream side conveyor 52.

In the present embodiment, the top plate 57 is provided above the moving space S in which the upstream conveyor 51 and the downstream conveyor 52 are separated from each other by the columns 56 provided on both sides in the transport direction of the work. It is supported in parallel with the work mounting surface of the upstream side conveyor 51 and the downstream side conveyor 52, which are the transport paths of the above. A total of four lower ends of the columns 56 are slidably arranged by the LM guide 58 on the upper surface of the stage 59 provided on the arrangement side of the upstream conveyor 51 in parallel with the transport path of the work. It is fixed to the plate-shaped slide portion 60.

An air cylinder 10 as an actuator for indirectly advancing and retreating the pair of side belts 53 is arranged on the upper surface of the stage 59 in parallel with the transport path of the work, and the tip of the rod 11 is the tip of the rod 11. It is connected to the slide member 60. That is, in the present embodiment, the actuator 10 for sliding and moving the erection member 3 is indirectly connected to the intermediate conveyor 55 as the erection member 3.

In the present embodiment, the electrical evacuation mechanism 20 of the fire door escape mechanism 1 can be configured as in the first and second embodiments described above. Further, in the present embodiment, the mechanical evacuation mechanism 4 of the fire door escape mechanism 1 has its tip fixed to the slide member 60, and its own weight at the rear end of the rod 11 which is in a free state due to air bleeding. The weight member 61 whose weight is adjusted so that the erection member 3 can be guided to the retracted position while being contracted is a string-shaped member 62 to which the weight member 61 is fixed. As shown in FIGS. 5 and 6, the string-shaped member 62 has a length such that the intermediate portion is rotated around the pulley 63 fixed to the cylinder 12 and the weight member 61 can always be hung from the stage 57.

According to the conveyor line 50 of the present invention, the rod 11 of the actuator 10 is always extended, and a pair of side belts 53 of the intermediate conveyor 55 as the erection member 3 are provided on the upstream side conveyor 51 and the downstream side conveyor 52. Arrange them so that they can be crossed over. As a result, the work mounted on the upper surface of the upstream conveyor 51 and conveyed to the downstream end thereof is driven in a state of being sandwiched between the pair of side conveyors 55, and mounted on the upstream end of the downstream conveyor 52. Then, the downstream conveyor 52 can convey the work passed from the intermediate conveyor 55 further downstream.

Then, when the fire door 2 is operated, the rod 11 of the actuator 10 is operated by the electric evacuation means 20 or the mechanical evacuation means 40 as described in the first and second embodiments of the fire door escape mechanism 1 described above. By contracting and retracting the pair of side belts 53 of the intermediate conveyor 55 from the moving space S of the disaster prevention shutter 2, it is possible to prevent the intermediate conveyor 55 from hindering the descent of the fire door 2.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

1 Fire door escape mechanism 2 Fire door (fire shutter)
3 Elevating member 4 Evacuation mechanism 5 Mounting part
6 Floor 7 Caster 8 Base 10 Actuator (air cylinder)
11 Rod 12 Cylinder 13 Supply source (air pump)
15 Actuator (of fire door) 20 Electrical evacuation means 23 First flow path switching valve 24 Spring 30 Solenoid valve 31 Spring 33 Second flow path switching valve 34 Spring 40 Mechanical evacuation means 41 Elastic member (coil spring)
50 Conveyor line 51 Upstream conveyor 52 Downstream conveyor 53 Side belt 55 Intermediate conveyor 56 Prop 57 Top plate 58 LM guide 59 Stage 60 Slide part 61 Weight member 62 String-shaped member 63 Pulley S Moving space P1 Position P2 on moving space S Retract position L1 First power supply line L2 Second power supply line VL1 First valve operation line L3 Third power supply line L4 Fourth power supply line VL2 Second valve operation line

Claims (6)

It is provided with a retracting mechanism for retracting the erection member, which is always arranged inside and outside the moving space, from a position on the moving space when the fire door, which is always stored by opening the moving space during operation, is operated. It is a fire door escape mechanism,
As the evacuation mechanism
An actuator that allows the erection member to move forward and backward between a position on the moving space and a retracted position moved in the horizontal direction.
An electrical evacuation means provided with a power supply line and an electric signal line for driving the actuator of the erection member when the fire door is operated and moving the erection member from the moving space to the evacuation position.
A machine that automatically and non-electrically moves the erection member from the moving space to the retracting position when the power supply line and / or the electrical signal line of the electrical retracting means is cut off when the fire door is operating. A fire door escape mechanism characterized by having a means of evacuation. The actuator of the erection member includes a rod directly or indirectly connected to the erection member, and resists the force of contracting the rod by the mechanical retracting means by the fluid as the power supplied to the cylinder. A rod-type cylinder that drives the rod to extend and position the erection member on the moving space of the fire door, and to contract the rod and retract the erection member from the moving space of the fire door. The fire door escape mechanism according to claim 1, wherein the fire door escape mechanism is provided. The mechanical retracting means is a weight member that guides the erection member to the retracted position while contracting the rod by its own weight, or an elastic member that guides the erection member to the retracted position while contracting the rod by the elastic force of the elastic member. The fire door escape mechanism according to claim 2, wherein the fire door escape mechanism is characterized by the above. The electrical evacuation means is
Source of power fluid,
A first power supply line that connects the supply source and the rod type cylinder of the erection member and supplies power for extending the rod.
A second power supply line that connects the supply source and the rod type cylinder of the erection member and supplies power for contracting the rod.
A first flow path switching valve that opens and closes the first power supply line,
The second power supply line is opened and closed, and the fluid connected to the first flow path switching valve and supplied from the supply source is used to operate the first flow path switching valve, and the first flow path switching valve is operated. The first mode in which the flow path switching valve is opened to supply the fluid from the first power supply line to the rod type cylinder of the erection member, and the second power supply to supply the fluid supplied from the supply source. 2. The fireproof door escape mechanism according to Item 3. The electrical evacuation means further
A third power supply line that connects the supply source and the actuator of the fire door and supplies power for deactivating the actuator of the fire door.
In the second power supply line, a branch is provided on the downstream side in the power supply direction from the position of the solenoid valve to connect the supply source and the actuator of the fire door, and the actuator of the fire door is provided. A fourth power supply line that supplies power to operate,
A second flow path switching valve for opening and closing the third power supply line is provided.
The solenoid valve is
In the first mode, the fluid supplied from the supply source is also used for operating the second flow path switching valve, the second flow path switching valve is closed, and the fluid is closed from the third power supply line. The fluid is also supplied to the actuator of the fire door,
The second mode is characterized in that the fluid supplied from the supply source can be switched so as to be supplied from the fourth power supply line to the actuator of the fire door. The fire door escape mechanism according to 4. The fire door escape mechanism according to any one of claims 1 to 5, wherein an upstream side conveyor and a downstream side conveyor are arranged so as to be separated from each other with a moving space for the fire door to move up and down or to move in and out in a straight line. And with
The erection member is always arranged so as to be suspended from the upstream conveyor and the downstream conveyor, and is an intermediate provided with a pair of side belts that sandwich the work to be conveyed and pass it from the upstream conveyor to the downstream conveyor. A conveyor line characterized by being a conveyor.

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