CN103693538B - Intelligent pneumatic landing door system - Google Patents

Abstract

The invention discloses an intelligent pneumatic landing door system, which includes a landing door lock mechanism, a landing door sliding mechanism, an electric control mechanism, a landing door pneumatic self-closing mechanism and a landing door opening protection mechanism, wherein: the landing door is pneumatically operated The self-closing mechanism includes an air cylinder and a piston rod fitted with a shaft hole. The air cylinder is fixedly arranged on the landing door guide rail frame of the landing door sliding mechanism. The piston rod includes a large diameter section and a small diameter section, and the outer end of the small diameter section passes through a connecting piece. Linked with the landing door hanging plate of the landing door sliding mechanism; the landing door opening protection mechanism includes an upper clamping block and a lower clamping block that are symmetrically movable, and the above-mentioned piston rod passes through the upper clamping block and the lower clamping block. The gap between the lower clamping blocks and its large diameter section form abutting contact interference fit with the upper clamping block and the lower clamping block in the closed state. The transmission positioning accuracy of the invention is more accurate, the difficulty of electrical control is reduced, the stroke is short, and the service life is long; it has the protection function of landing door opening to ensure the safe operation of the operator, and at the same time, the structure is non-contact, with lower noise and less wear and tear. Less; both alarm and lighting functions.

Description

Intelligent Pneumatic Landing Door System

technical field

The invention relates to a landing door system, which belongs to the technical field of special elevator equipment, in particular to an intelligent pneumatic landing door system.

Background technique

Nowadays, elevator landing door systems on the market are generally equipped with landing door self-closing devices, usually spring self-closing devices or gravity self-closing devices. Among them, although the cost of the spring self-closing device is lower than that of the gravity self-closing device, its structure will gradually age or even fail as time goes by, and the requirements for electrical control are relatively high; while the gravity self-closing device has relatively high requirements for electrical control. Lower, but its structure is more complicated than the spring self-closing device, and the cost is also high.

On the other hand, the existing landing door systems are also equipped with landing door opening protection devices, which are generally contact structures. When the car reaches the leveling area, the plate is hit to make the stopper move, and the landing door opens smoothly. In the leveling area, the stop bar prevents the landing door from opening at a certain position. But there is following problem in the landing door opening protection device of this structure, and promptly hit plate every time when reaching leveling area, needs to contact with retaining rod part, easily produces noise and parts wear and tear, and when car is shaking normally (such as Abnormal vibration of guide shoe and guide rail) and abnormal vibration (such as earthquake), there is a risk of device damage, which poses a great safety hazard.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art, and provide an intelligent pneumatic landing door system with simple and compact structure, sensitive action, safety, practicality and reliability, and long service life.

In order to achieve the above object, the present invention realizes according to the following technical solutions:

An intelligent pneumatic landing door system, including a landing door lock mechanism, a landing door sliding mechanism, an electric control mechanism, a landing door pneumatic self-closing mechanism and a landing door opening protection mechanism, wherein:

The landing door pneumatic self-closing mechanism includes an air cylinder and a piston rod fitted with a shaft hole. The air cylinder is fixedly arranged on the landing door guide rail frame of the landing door sliding mechanism. The end is connected and linked with the landing door hanging plate of the landing door sliding mechanism through the connecting piece;

The landing door opening protection mechanism includes an upper clamping block and a lower clamping block which are movable symmetrically. The upper clamping block and the lower clamping block form an abutting contact interference fit.

Further, the same ends of the upper clamping block and the lower clamping block are slidingly connected and matched with the guide chute provided on the landing door guide rail frame respectively, and the opposite ends are respectively linked with the guide rails provided on the landing door guide rail frame. The components are connected and matched, and the middle part is provided with arc-shaped recesses adapted to fit with the large-diameter section of the piston rod; and the upper clamping block and the lower clamping block are respectively provided with electromagnetic coils electrically connected to the electric control mechanism.

Further, the linkage assembly includes a turntable, upper two connecting rods and lower two connecting rods, wherein the axis of the turntable is movably connected to the floor door guide rail frame through a rotating member, and one rod body of the upper two connecting rods is movably connected to the turntable , the other rod body is movably connected with the upper clamping block, one rod body of the lower two connecting rods is movably connected with the turntable and the connection position is symmetrical with the connection position between the upper two connecting rods and the turntable relative to the axis of the turntable, and the other rod body is connected with the lower clamp Hold block active connections.

Further, the landing door opening protection mechanism also includes a manual opening assembly, and the manual opening assembly includes a return spring, a pull rod, a pull rope and a positioning support, wherein the pull rod is movably passed through the positioning support, and its two ends are respectively Cooperating with the connection between the lower clamping block and the pull rope, the return spring is movably sheathed on the outside of the pull rod and is located between the lower clamping block and the positioning support.

Further, the landing door system also includes an alarm circuit in the non-leveling area, and the alarm circuit in the non-leveling area includes an alarm power supply, an alarm, a first alarm contact, a second alarm contact and a conductive ring, wherein , the first alarm contact is set on the clamping block of the landing door opening protection mechanism, the second alarm contact and the conductive ring are set at the transition position between the large diameter section and the small diameter section of the piston rod of the landing door pneumatic self-closing mechanism, the When the transition position is in contact with the upper clamping block and the lower clamping block of the landing door opening protection mechanism, the first alarm contact and the second alarm contact are conducted to form an alarm serial circuit.

Further, the landing door system also includes a lighting circuit, the lighting circuit includes a lighting power supply, a start switch, a normally closed contact, a coil and a coil contact, a lighting lamp and The plug switch, wherein the plug switch includes a plug part and a switch part, the start switch and the coil contact are connected in parallel and then connected in series with the above-mentioned normally closed contact, the coil, the lighting lamp and the switch part of the plug switch, the plug part of the plug switch is connected with the The hanging plate of the landing door is fixedly connected, and the switch part is provided with two conductive shrapnels which are not in contact with each other and conductors respectively in clutch contact with the conductive shrapnel.

Further, the pneumatic self-closing mechanism of the landing door also includes a left stopper and a right stopper arranged at the left and right ends of the air cylinder, and an annular piston head is arranged at the inner end of the piston rod.

Compared with the prior art, the present invention has the beneficial effects of:

1. The pneumatic self-closing function of the landing door is different from the existing gravity self-closing structure or spring self-closing structure. The transmission positioning accuracy is more accurate, the difficulty of electrical control is reduced, the stroke is short, and the service life is long;

2. The landing door opening protection function, after using the triangular key to open the landing door in the non-leveling area, the opening progress of the landing door is limited, and the operator can judge whether to continue to open, so as to avoid accidentally falling into the hoistway and ensure the safe operation of the operator. The first structure is non-contact, with lower noise and less wear;

3. It has both alarm and lighting functions, providing warnings for operators, making it easier for operators to work and increasing the safety factor.

In order to have a clearer understanding of the present invention, the specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic structural diagram of the present invention in a closed state.

Fig. 2 is a schematic side view of the landing door opening protection mechanism in Fig. 1 .

Figure 3 is a structural schematic diagram of the alarm circuit in the non-leveling area.

Fig. 4 is a structural schematic diagram of the lighting circuit.

Fig. 5 is a schematic diagram of the structure of the present invention when it is normally opened in the leveling area.

Fig. 6 is a structural schematic diagram of the present invention in the unlocking protection state of the landing door in the non-leveling area.

Fig. 7 is a structural schematic diagram of the present invention fully opening the landing door in a special operation.

Fig. 8 is a schematic side view of the landing door opening protection mechanism in Fig. 7 .

Fig. 9 is a structural schematic diagram of the triggering state of the alarm circuit in the non-leveling area.

Fig. 10 is a structural schematic diagram of untriggering of the alarm circuit in the non-leveling area.

Fig. 11 is a schematic diagram of the working structure of the lighting circuit.

Detailed ways

As shown in Figures 1 to 4, the intelligent pneumatic landing door system of the present invention includes a landing door lock mechanism 1, a landing door sliding mechanism 2, an electric control mechanism, a landing door pneumatic self-closing mechanism 3 and a landing door opening protection mechanism. Institution 4.

The above-mentioned landing door pneumatic self-closing mechanism 3 includes an air cylinder 31 and a piston rod 32 fitted with a shaft hole. The air cylinder 31 is fixedly arranged on the landing door guide rail frame 21 of the landing door sliding mechanism, and left stoppers are arranged at the left and right ends of the inner door. 33 and the right stopper 34, the piston rod 32 includes a large-diameter section 321 and a small-diameter section 322, the outer end of the small-diameter section 322 is connected and interlocked with the landing door hanging plate 22 of the landing door sliding mechanism through a connector, and the large The inner end of the diameter section 321 is provided with an annular piston head 35 .

The above-mentioned landing door opening protection mechanism 4 includes an upper clamping block 41 and a lower clamping block 42 which are movable symmetrically. The guide chute 43 is slidingly connected and matched, and the opposite ends are respectively connected and matched with the linkage assembly arranged on the landing door guide rail frame 21, and the middle part is respectively provided with arc-shaped recesses adapted to match with the large-diameter section of the piston rod, and the piston rod 32 passes through the gap between the arc-shaped recesses of the upper clamping block 41 and the lower clamping block 42, and its large diameter section 321 forms abutting contact interference with the upper clamping block 41 and the lower clamping block 42 in the closed state Cooperate.

Further, the linkage assembly includes a turntable 44, an upper two connecting rod 45 and a lower two connecting rod 46, wherein the axis position of the turntable 44 is movably connected with the floor door guide rail frame 21 through a rotating member, and the other two upper connecting rods 45 One rod body is movably connected with the rotating disk 44, the other rod body is movably connected with the upper clamping block 41, and one rod body of the lower two connecting rods 46 is movably connected with the rotating disk 44 and the connecting position is in phase with the connection phase between the upper two connecting rods 45 and the rotating disk 44. For the axis symmetry of the rotating disk 44 , the other rod body is movably connected with the lower clamping block 42 .

As a preferred solution of this embodiment, the landing door opening protection mechanism has two control modes: electric and manual. Among them, the structure adopted by the electric control mode is that the upper clamping block 41 and the lower clamping block 42 are respectively provided with the electric control mechanism. The electrically connected electromagnetic coils, when the electromagnetic coils are energized, will automatically separate and loosen in reverse because the polarities of the upper clamping block 41 and the lower clamping block 42 are the same. The manual control method is to set the manual opening assembly 5, the manual opening assembly 5 includes a return spring 51, a pull rod 52, a pull cord 53 and a positioning support 54, wherein the pull rod 52 is movable through the positioning support 54, and its two ends Respectively connected with the lower clamping block 42 and the pull cord 53 , the return spring 51 is movably sheathed outside the pull rod 52 and located between the lower clamping block 42 and the positioning support 54 .

Preferably, the landing door system also includes a non-leveling area alarm circuit 6, and the non-leveling area alarm circuit 6 includes an alarm power supply, an alarm 61, a first alarm contact 62, a second alarm contact 63 and conductive ring piece 64, wherein the first alarm contact 62 is set on the clamping block of the landing door opening protection mechanism, and the second alarm contact 63 and the conductive ring piece 64 are set on the piston rod of the landing door pneumatic self-closing mechanism The transition position between the large-diameter section and the small-diameter section. When the transition position is in contact with the upper clamping block and the lower clamping block of the landing door opening protection mechanism, the first alarm contact 62 and the second alarm contact 63 conduct to form an alarm. Serial loop.

Preferably, the landing door system also includes a lighting circuit 7, and the lighting circuit 7 includes a lighting power supply, a start switch 71, a normally closed contact 72, a coil 73 and a coil contact 74, a lighting lamp 75 and a plug switch 76, wherein, the plug switch 76 includes a plug part 761 and a switch part 762, and the switch part 762 of the above-mentioned normally closed contact 72, the coil 73, the illuminating lamp 75 and the plug switch after the start switch 71 and the coil contact 74 are connected in parallel Connected in series, the latch portion 761 of the latch switch 76 is fixedly connected to the landing door hanging plate 22, and the switch portion 762 is provided with two conductive shrapnels that do not contact each other and conductors that are respectively in clutch contact with the conductive shrapnel.

The working principle of the present invention is as follows:

1. The landing door opens normally in the leveling area. As shown in Figure 5, when the car reaches the leveling area, the leveling signal of the electric control mechanism makes the electromagnetic coils of the upper clamping block and the lower clamping block of the landing door opening protection mechanism energized. The properties are the same and the reverse separation is loosened, so the large diameter section of the piston rod 32 will not contact the upper clamping block and the lower clamping block, the alarm circuit in the non-leveling area will not be triggered, and the leveling signal will make the lighting circuit. The normally closed contact is disconnected, so even if the start switch and the latch switch of the lighting circuit are triggered when the landing door lock mechanism is unlocked, the lighting circuit will still not be connected; When moving block 34, the landing door is fully opened, which plays a position-limiting effect. Simultaneously, because the pressure in the gas cylinder 31 is less than the atmospheric pressure, the piston rod 32 can be reset automatically and the landing door is closed earlier than the car door.

2. The non-leveling area is specially opened. As shown in Figure 6, use a triangular key to open the landing door lock mechanism, and then pull the left and right landing doors to the left and right sides. Since the piston rod 32 is connected and interlocked with the right landing door hanging plate 22, the piston rod 32 will also move accordingly. Stretch out to the right, until the transition position between the large-diameter section and the small-diameter section of the piston rod 32 is in contact with the upper clamping block and the lower clamping block, the piston rod 32 is limited and cannot continue to move to the right. At this time, the layer The door only opens a gap, the operator cannot pass through, but the situation in the well can be observed through the gap. If it is judged that the entrance to the well is stopped, the landing door is released. Since the pressure inside the gas cylinder 31 is lower than the atmospheric pressure, the piston rod 32 can be automatically reset and The landing door is automatically closed; as shown in Figures 7 and 8, if it is judged that it is necessary to continue entering the hoistway, it is only necessary to pull the stay rope 53 downwards, and the stay rope 53 drives the lower clamping block 42 through the pull rod 52 to compress the return spring 51 and move downward At the same time, the lower clamping block 42 drives the upper clamping block 41 to move upward synchronously through the linkage assembly until the upper clamping block 41 and the lower clamping block 42 will not interfere with the large diameter section of the piston rod 32, thereby Released piston rod 32, landing door can continue to open until fully opened, and decontrol stay cord 53, due to the restoring force effect of back-moving spring 51, lower clamping block 41 and upper clamping block 42 will reset.

Non-leveling area alarm circuit. As shown in Figure 9, when the piston rod 32 moves rightward to the transition position between the large-diameter section and the small-diameter section and contacts the upper clamping block and the lower clamping block, the first alarm contact 62 and the second alarm contact The head 63 is connected through the conductive ring, that is, the alarm circuit forms a loop, and the alarm 61 sounds to remind the operator to perform a safe operation; block and the lower clamping block, because the large diameter section of the piston rod 32 is not in contact with the upper clamping block and the lower clamping block, the first alarm contact 62 and the second alarm contact 63 are disconnected, that is, the alarm circuit is disconnected loop, stop the alarm.

lighting circuit. As shown in Figure 11, when using a triangular key to open the landing door lock mechanism, the unlocking frame 11 of the landing door locking mechanism pushes the start switch 71 to close, and then, as the double-wing landing door moves in the opposite direction, the latch part 761 of the latch switch 76 Break away from the switch part 762, that is, the switch part 762 is turned on, so that the entire lighting circuit is connected to form a loop, and the lighting lamp is bright. At the same time, the coil 73 is powered, and the coil contact 74 is also closed. Therefore, when the unlocking frame 11 resets, When the start switch is turned off again, the entire lighting circuit is still in the ON state until the landing door is closed, the plug part 761 of the plug switch 76 is inserted into the switch part 762 again, and the connection of the plug switch 76 is cut off, and the lighting circuit is turned off. The contact 74 is de-energized and disconnected again.

The present invention is not limited to the above-mentioned embodiments, if the various changes or modifications of the present invention do not depart from the spirit and scope of the present invention, if these changes and modifications belong to the claims of the present invention and within the equivalent technical scope, then the present invention is also It is intended that such modifications and variations are included.

Claims (7)

1. An intelligent pneumatic landing door system, including a landing door lock mechanism, a landing door sliding mechanism and an electric control mechanism, characterized in that: it also includes a landing door pneumatic self-closing mechanism and a landing door opening protection mechanism, wherein: The landing door pneumatic self-closing mechanism includes an air cylinder and a piston rod fitted with a shaft hole. The air cylinder is fixedly arranged on the landing door guide rail frame of the landing door sliding mechanism. The end is connected and linked with the landing door hanging plate of the landing door sliding mechanism through the connecting piece; The landing door opening protection mechanism includes an upper clamping block and a lower clamping block which are movable symmetrically. The upper clamping block and the lower clamping block form an abutting contact interference fit. 2. The intelligent pneumatic landing door system according to claim 1, characterized in that: the same ends of the upper clamping block and the lower clamping block are respectively slidingly connected with the guide chute provided on the landing door guide rail frame , the opposite end parts are respectively connected and matched with the linkage assembly arranged on the landing door guide rail frame, and the middle part is respectively provided with an arc-shaped concave position adapted to cooperate with the large-diameter section of the piston rod; and the upper clamping block and the lower clamping block Electromagnetic coils electrically connected with the electric control mechanism are respectively arranged inside. 3. The intelligent pneumatic landing door system according to claim 2, characterized in that: the linkage assembly includes a turntable, upper two connecting rods and lower two connecting rods, wherein the axis position of the turntable is passed through the rotating member and the landing door guide rail One of the upper two connecting rods is movably connected with the turntable, the other rod is movably connected with the upper clamping block, one of the lower two connecting rods is movably connected with the turntable and the connecting position is connected with the upper two connecting rods and the upper clamping block. The connection position of the turntable is symmetrical with respect to the axis of the turntable, and the other rod body is movably connected with the lower clamping block. 4. The intelligent pneumatic landing door system according to any one of claims 1 to 3, characterized in that: the landing door opening protection mechanism also includes a manual opening assembly, and the manual opening assembly includes a return spring, a pull rod, and a pull rope And the positioning support, wherein, the pull rod is movable through the positioning support, and its two ends are respectively connected with the lower clamping block and the pull rope, and the return spring is movable and sleeved outside the pull rod and is located between the lower clamping block and the positioning support. between. 5. According to the intelligent pneumatic landing door system according to any one of claims 1 to 3, it is characterized in that: it also includes a non-leveling area alarm circuit, and the non-leveling area alarm circuit includes an alarm power supply, an alarm, a first The alarm contact, the second alarm contact and the conductive ring, wherein the first alarm contact is set on the clamping block of the landing door opening protection mechanism, and the second alarm contact and the conductive ring are set on the pneumatic self-closing block of the landing door. The transition position between the large-diameter section and the small-diameter section of the piston rod of the mechanism, when the transition position is in contact with the upper clamping block and the lower clamping block of the landing door opening protection mechanism, the first alarm contact and the second alarm contact are in conduction Form an alarm serial loop. 6. The intelligent pneumatic landing door system according to any one of claims 1 to 3, characterized in that: it also includes a lighting circuit, the landing door system also includes a lighting circuit, and the lighting circuit includes a lighting power supply, a start switch , normally closed contacts, coils and coil contacts, lamps and latch switches, wherein the latch switch includes a latch part and a switch part, and the start switch and coil contacts are connected in parallel to the above normally closed contacts, coils, lamps It is connected in series with the switch part of the latch switch, and the latch part of the latch switch is fixedly connected with the landing door hanging plate, and the switch part is provided with two conductive shrapnels that do not contact each other and conductors that are in clutch contact with the conductive shrapnel respectively. 7. The intelligent pneumatic landing door system according to claim 1, characterized in that: the landing door pneumatic self-closing mechanism also includes a left stopper and a right stopper arranged at the left and right ends of the inside of the air cylinder, and the piston rod. The inner end is provided with an annular piston head.