An anti-collision blocking device for floor doors of automobile elevators

Abstract

The present invention discloses an anti-collision blocking device for floor doors of automobile elevators, comprising a blocking body arranged on the floor station floor and in front of the floor door, and a driving part used for driving the blocking body to arch or flatten so as to adjust the height of the blocking body to switch between a passing state and a blocking state. The characteristic is that the blocking body comprises a front folding plate and a rear folding plate which are hinged to each other, the side of the rear folding plate close to the floor door being its rear side and the other side being the front side, the rear end portion of the rear folding plate being rotatably connected to the ground, the driving part being connected to the front folding plate, the blocking body being driven by the driving part to switch between a folded and unfolded posture, and then the device being switched between a blocking state and a non-blocking state, which can effectively prevent a car from colliding with the elevator floor door when the elevator car is not on the current floor, thereby causing danger.

Description

Technical Field

[0001] The invention belongs to the field of elevator equipment, and in particular relates to an anti-collision blocking device for a floor door of a car elevator. Background Art

[0002] A car elevator is a special cargo elevator used to transport non-commercial cars, i.e., the private cars we use in daily life. When a private car is waiting for the elevator outside the landing door, due to improper operation by the driver, the private car is likely to rush towards and hit the landing door, and the strength of the landing door cannot withstand the impact of the private car, which not only causes damage to the landing door and the private car, but more seriously, the private car crashes into the landing door and rushes into the shaft, causing a bigger accident. Summary of the invention

[0003] The object of the present invention is to provide a floor door anti-collision blocking device for a car elevator which can effectively prevent a car from colliding with an elevator floor door when the elevator car is not on the same floor.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions: an anti-collision blocking device for floor doors of automobile elevators, comprising a blocking body arranged on the floor station and in front of the floor door, and a driving part for driving the blocking body to arch or flatten so as to adjust the height of the blocking body so that it can switch between a passing state and a blocking state, characterized in that: the blocking body comprises a front folding plate and a rear folding plate which are hinged to each other, the side of the rear folding plate close to the floor door is its rear side, and the other side is the front side, the rear end portion of the rear folding plate is rotatably connected to the ground, the driving part is connected to the front folding plate, when the driving part drives the front folding plate and the rear folding plate to arch, the anti-collision blocking device is in a blocking state; when the driving part drives the front folding plate and the rear folding plate to flatten, the anti-collision blocking device is in a passing state.

[0005] Optimally, there are two driving parts, which are symmetrically arranged on the left and right sides of the blocking body.

[0006] Furthermore, each of the driving parts includes a power part, a wire rope, a reversing assembly and a reset assembly arranged in the elevator shaft, one end of the wire rope is connected to the power part, and the other end thereof is connected to the front end of the front folding plate, the reversing assembly includes a wire rope fixed pulley frame, a first wire rope fixed pulley and a second wire rope fixed pulley installed on the wire rope fixed pulley frame, the wire rope passes over the top of the first wire rope fixed pulley and then passes under the second wire rope fixed pulley and is connected to the front end of the front folding plate, the reset assembly includes a guide seat arranged on the left and right sides of the blocking body, and a guide seat connected to the guide seat. A compression spring pin seat is located below the blocking body, a compression spring pin is inserted into the compression spring pin seat and has a rear end portion provided with an anti-slip nut, and a compression spring is sleeved on the compression spring pin and has a front end fixed to the front end portion of the compression spring pin and a rear end pressed against the front end surface of the compression spring pin seat. When the power unit drives the wire rope to move, the front folding plate is folded toward the rear end portion of the rear folding plate and compresses the compression spring pin until it is in a blocking state. When the power unit reduces or eliminates the force acting on the wire rope, the compression spring pin pushes the front end portion of the front folding plate forward under the action of the compression spring until the front folding plate and the rear folding plate are flattened. At this time, the anti-collision blocking device is in a passing state.

[0007] Furthermore, the power unit includes an inner connecting rod, a connecting rod seat, a movable pulley for wire rope, an inner rope head for wire rope, an inner rope head frame for wire rope, a wire rope, a movable pulley connecting rod, a connecting rod sliding pin, a pull plate, a connecting pin, a weight, a weight pipe clamp, a weight pipe, a lower limit seat, a lower limit adjustment bolt, an outer connecting rod, a movable connecting rod pin, a fixed connecting rod pin and a pressurizing assembly. The wire rope passes through the second fixed pulley for wire rope and the first fixed pulley for wire rope in turn, guides the direction of the wire rope from horizontal to vertical into the wellbore and then passes through the movable pulley for wire rope, turns the direction of the wire rope upward and connects with the inner rope head of the wire rope. The wire rope The inner rope head is fixed to the well wall through the inner rope head frame of the wire rope; the connecting rod seat is fixed to the well wall, the outer connecting rod is arranged between the two connecting rod seats, the pin hole at one end of the outer connecting rod is coaxially arranged with the pin hole on the connecting rod seat, the fixed connecting rod pin passes through the pin holes on the two connecting rod seats and the pin holes of the outer connecting rod and is fixed on the connecting rod seat, and the outer connecting rod can rotate around the fixed connecting rod pin; the connecting rod sliding pin is arranged in the sliding groove on the two connecting rod seats, and the connecting rod sliding pin can move along this sliding groove, one end of the inner connecting rod is connected to the other end of the outer connecting rod through the movable connecting rod pin, the other end of the inner connecting rod is connected to the connecting rod sliding pin and is coaxially arranged with it, and the movable pulley is connected One end of the rod with a pin hole is connected to the connecting rod sliding pin and is coaxially arranged therewith, and the other end of the movable pulley connecting rod is fixedly connected to the wire rope movable pulley; the upper end of the pull plate is connected and fixed to the movable pulley connecting rod, and the lower end of the pull plate is connected to the heavy hammer through a connecting pin, and the heavy hammer is inserted into the heavy hammer tube and can move up and down, and the heavy hammer tube is fixed to the well wall through upper and lower heavy hammer tube clamps, and the lower limit seat is fixed to the well wall, and a lower limit adjusting bolt is arranged on the lower limit seat to set the lowest position of the heavy hammer by adjusting the extension length of the lower limit adjusting bolt, and prevent the heavy hammer from falling into the well when the wire rope breaks; the heavy hammer The hammer's own weight is transmitted to the movable pulley of the wire rope through the pull plate and the movable pulley connecting rod, and is converted into a pulling force on the wire rope, so that the front folding plate and the rear folding plate remain in an arched state; when the pressure-applying component applies pressure on the hinge of the inner connecting rod and the outer connecting rod, the pressure is transmitted to the connecting rod sliding pin through the connecting rod slider mechanism composed of the fixed connecting rod pin, the outer connecting rod, the movable connecting rod pin, the inner connecting rod, the connecting rod sliding pin and the connecting rod seat, and the weight, the movable pulley connecting rod and the movable pulley of the wire rope move upward under the action of this pulling force, causing the wire rope to relax and the pulling force on it to reduce, and then the front folding plate and the rear folding plate fall back to a horizontal state.

[0008] Furthermore, each of the pressurizing components includes a push rod rear seat, a push rod, a push rod front clamp, a push plate, a level-in-place switch, a switch hitting plate, a folded-in-place switch, an in-place switch frame, a push rod rear pin, a push rod front clamp seat, and a push rod pin. The push rod rear seat is fixed to the car frame, and the rear end of the push rod fixed end of the push rod is connected to the push rod rear seat through the push rod rear pin and then fixed to the car frame. The front end of the push rod fixed end is fixed to the car frame through the push rod front clamp and the push rod front clamp seat; the push plate is inserted into the push rod movable end of the push rod and is fixed to it through the push rod pin, the switch hitting plate is fixed to the push plate, the level-in-place switch and the folded-in-place switch are fixed to the in-place switch frame, and are fixed to the car frame through the in-place switch frame.

[0009] Optimally, the blocking body further comprises a front slope and a rear slope, wherein the front slope is arranged in front of the front folding plate and fixed on the ground of the floor door, and the rear slope is arranged behind the rear folding plate and fixed on the ground of the floor door.

[0010] The beneficial effect of the present invention is that the driving part drives the blocking body to switch between the folded and unfolded postures, thereby switching the device between the blocking and non-blocking states, which can effectively prevent the car from colliding with the elevator door when the elevator car is not on the same floor, thereby causing danger. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a side view of the landing door anti-collision blocking device in a flat state;

[0012] Figure 2 This is a top view of the landing door anti-collision blocking device in a flat state;

[0013] Figure 3 This is a side view of the landing door anti-collision blocking device in a retracted state;

[0014] Figure 4 It is a partial view of the weight connecting rod;

[0015] Figure 5 It is a schematic diagram of the roller structure;

[0016] Figure 6 It is a schematic diagram of the push rod structure;

[0017] 1-push rod rear seat, 2-push rod, 3-push rod front clamp, 4-push plate, 5-inner connecting rod, 6-connecting rod seat, 7-wire rope movable pulley, 8-wire rope inner rope head, 9-wire rope inner rope head frame, 10-first wire rope fixed pulley, 11-wire rope fixed pulley frame, 12-second wire rope fixed pulley, 13-wire rope, 14-plate rotating pin, 15-plate rotating pin seat, 16-rear folding plate, 17-hinge, 18-front folding plate, 19-plate sliding pin seat, 20-plate sliding pin, 21-wire rope outer rope head seat, 22-wire rope outer rope head pin, 23-wire rope outer rope head, 24-moving pulley connecting rod, 25-connecting rod sliding pin, 26-pull plate, 27-connecting pin, 28-weight, 29-weight pipe clamp, 30-weight pipe, 31-lower limit Position seat, 32-lower limit adjustment bolt, 33-leveling in place switch, 34-switch plate, 35-folding in place switch, 36-in place switch frame, 37-car frame, 38-well wall, 39-floor door opening, 40-push rod rear pin, 41-push rod front clamp seat, 42-push rod pin, 43-outer connecting rod, 44-movable connecting rod pin, 45-compression spring pin seat, 46-guide seat, 47-compression spring pin, 48-compression spring, 49-roller assembly, 410-anti-slip nut, 50-support seat, 51-fixed connecting rod pin, 52-rear slope, 53-front slope, 201-push rod fixed end, 202-push rod moving end, 491-roller seat, 492-roller shaft, 493-shaft retaining ring, 494-roller positioning sleeve, 495-roller. DETAILED DESCRIPTION

[0018] The present invention is described in detail below in conjunction with the embodiments shown in the accompanying drawings:

[0019] like Figure 1 As shown, the anti-collision blocking device for the floor door of a car elevator includes a blocking body arranged on the floor of the landing station and located in front of the floor door, and a driving part for driving the blocking body to arch or flatten so as to adjust the height of the blocking body to switch it between a passing state and a blocking state.

[0020] Specifically, the blocking body includes a plate rotation pin 14, a plate rotation pin seat 15, a rear folding plate 16, a hinge 17, a front folding plate 18, a plate sliding pin seat 19, a plate sliding pin 20, a roller assembly 49, a front ramp 53 and a rear ramp 52. The side of the rear folding plate 16 close to the landing door is its rear side, and the other side is the front side. The front folding plate 18 is hinged to the rear folding plate 16 through the hinge 17. The rear end of the rear folding plate is rotatably connected to the ground, and the driving part is connected to the front folding plate.

[0021] There are two driving parts, which are symmetrically arranged on the left and right sides of the blocking body. Each of the driving parts includes a power part, a wire rope 13, a reversing assembly and a reset assembly arranged in the elevator shaft, one end of the wire rope 13 is connected to the power part, and the other end thereof is connected to the front end of the front folding plate 18, the reversing assembly includes a wire rope fixed pulley frame 11, a first wire rope fixed pulley 10 and a second wire rope fixed pulley 12 installed on the wire rope fixed pulley frame, the wire rope passes over the top of the first wire rope fixed pulley and then passes under the second wire rope fixed pulley and is connected to the front end of the front folding plate, the reset assembly includes a guide seat 46 arranged on the left and right sides of the blocking body, a compression spring pin seat 45 connected to the guide seat and located below the blocking body, a compression spring pin 47 inserted in the compression spring pin seat and provided with an anti-slip nut 410 at the rear end, and a compression spring 48 sleeved on the compression spring pin and having its front end fixed to the front end of the compression spring pin and its rear end pressed against the front end surface of the compression spring pin seat.

[0022] Specifically, the guide seat 46 is fixed on both sides of the floor door symmetrically, the compression spring pin seat 45 is fixed on the side of the guide seat 46 close to the center line of the floor door, the compression spring 48 is inserted into the compression spring pin 47, and the compression spring pin 47 is installed in the pin hole of the compression spring pin seat 45, which can reciprocate and has a certain resilience; the rear folding plate 16 is arranged in front of the floor door opening 39 in a symmetrical manner, and a left and right plate rotation pin seat 15 is fixed at both ends of the rear folding plate 16 close to the floor door side, one end of the plate rotation pin 14 is inserted into the plate rotation pin seat 15, and the other end of the plate rotation pin 14 is inserted into the pin hole of the guide seat 46, so that the rear folding plate 16 can rotate around the axis of the plate rotation pin 14 The center lines of the rotating shafts of the plurality of hinges 17 are coaxially arranged, and one side of the hinge 17 is fixed on the rear folding plate 16; the front folding plate 18 is symmetrically arranged at the door of the floor door, and a plate sliding pin seat 19 is fixed on each side of the front folding plate 18 away from the two ends of the floor door, one end of the plate sliding pin 20 is inserted into the plate sliding pin seat 19, and the other end of the plate sliding pin 20 is inserted into the slide groove of the guide seat 46, so that the front folding plate 18 can slide while rotating around the axis of the plate sliding pin 20, and the center lines of the rotating shafts of the plurality of hinges 17 are coaxially arranged, and the other side of the hinge 17 is fixed on the front folding plate 18; multiple sets of the roller assemblies 49 are installed on the side of the front folding plate 18 away from the floor door. On one side, the axis of the roller assembly 49 is coaxially arranged with the plate sliding pin 20; a wire rope outer rope head seat 21 is fixed on each side of the front folding plate 18, and the left and right two wire rope outer rope head pins 22 are inserted into the pin holes of the wire rope outer rope head seat 21 and can rotate freely around the axis of the pin holes, and the left and right two wire rope outer rope heads 23 are fixed in the wire rope outer rope head pins 22, and the left and right two steel wire ropes 13 are respectively connected to the two wire rope outer rope heads 23 set on the left and right, and the two pieces of the wire rope fixed pulley frame 11 are fixed in the wellbore wall 38 in a left-right symmetrical manner, and the first wire rope fixed pulley 10 and the second wire rope fixed pulley 12 are fixed on the wire rope fixed pulley frame 11. The wire rope 13 passes through the second wire rope fixed pulley 12 and the first wire rope fixed pulley 10 in turn, and the direction of the wire rope 13 is guided from horizontal to inside the hoistway and vertically downward; the support seat 50 is fixed at the floor door symmetrically, and is supported at the joint of the front folding plate 18 and the rear folding plate 16 to reduce the load on the front folding plate 18 and the rear folding plate 16 when the wheels of the car pass through the front folding plate 18 and the rear folding plate 16; the front slope 53 is set at the front of the front folding plate 18 and fixed on the floor door ground, and the rear slope 52 is set at the rear of the rear folding plate 16 and fixed on the floor door ground, and the rear slope 52 and the front slope 53 make it easier for the car to pass through the folding plate 18 and the rear folding plate 16;At this time, when a pulling force is applied to the wire rope 13, the pulling force is transmitted to the front folding plate 18 through the outer rope head 23 of the wire rope, the outer rope head pin 22 of the wire rope, and the outer rope head seat 21 of the wire rope. Under the action of this pulling force and the action of the plate sliding pin 20 and the sliding groove on the guide seat 46, the front folding plate 18 slides forward away from the side of the floor door. When the plate moving pin 20 slides to a certain distance, the plate sliding pin seat 19 touches the compression spring pin 47 and further compresses the compression spring 48. At this time, the front folding plate 18 and the rear folding plate 16 are in the action of the hinge 17. It arches upward from the bottom to prevent cars from entering and approaching the elevator door; when the tension applied to the wire rope 13 is reduced, the compression spring pin 47 pushes the plate sliding pin seat 19 and the plate sliding pin 20 to slide backward under the action of the rebound force of the compression spring 48. At this time, the arch height between the front folding plate 18 and the rear folding plate 16 drops back. When the plate sliding pin seat 19 breaks away from the rebound distance of the compression spring 48 and the compression spring pin 47, the front folding plate 18 and the rear folding plate 16 further fall back to a horizontal state under the action of their own gravity. The roller assembly 49 includes a roller seat 491, a roller shaft 492, a shaft retaining spring 493, a roller positioning sleeve 494, and a roller 495; wherein the roller shaft 492 is inserted into the shaft holes on the two ears of the roller seat 491, the shaft retaining spring 493 is installed at the protruding end of the roller shaft 492 to limit its axial movement, the roller 495 is coaxially arranged with the roller shaft 492 and arranged between the two ears of the roller seat 491, and two roller positioning sleeves 494 are respectively arranged between the roller 495 and the two ears of the roller seat 491 to limit the position of the roller 495; the multiple roller assemblies 49 arranged on the front folding plate 18 play an auxiliary supporting role for the front folding plate 18. ;

[0023] The power unit includes an inner connecting rod 5, a connecting rod seat 6, a movable pulley 7 for a wire rope, an inner rope head 8 for a wire rope, an inner rope head frame 9 for a wire rope, a movable pulley connecting rod 24, a connecting rod sliding pin 25, a pull plate 26, a connecting pin 27, a weight 28, a weight pipe clamp 29, a weight pipe 30, a lower limit seat 31, a lower limit adjusting bolt 32, an outer connecting rod 43, a movable connecting rod pin 44, and a fixed connecting rod pin 51. The steel wire rope 13 passes through the second steel wire rope fixed pulley 12 and the first steel wire rope fixed pulley 10 in sequence, and the direction of the steel wire rope 13 is guided from horizontal to vertically downward in the hoistway, and then passes through the steel wire rope movable pulley 7, and the direction of the steel wire rope 13 is turned upward and connected to the inner rope head 8 of the steel wire rope, and the inner rope head 8 of the steel wire rope is fixed to the hoistway wall 38 through the inner rope head frame 9 of the steel wire rope; the connecting rod seat 6 is fixed to the hoistway wall 38, and the outer connecting rod 43 is arranged between the two connecting rod seats 6, and the pin hole at one end of the outer connecting rod 43 is coaxially arranged with the pin hole on the connecting rod seat 6, and the fixed connecting rod pin 51 passes through the pin holes on the two connecting rod seats 6 and the outer connecting rod 43. The pin hole is fixed on the connecting rod seat 6, and the outer connecting rod 43 can rotate around the fixed connecting rod pin 51; the connecting rod sliding pin 25 is set in the slide groove on the two connecting rod seats 6, and the connecting rod sliding pin 25 can move along this slide groove, one end of the inner connecting rod 5 is connected to the other end of the outer connecting rod 43 through the movable connecting rod pin 44, and the other end of the inner connecting rod 5 is connected to the connecting rod sliding pin 25 and arranged coaxially with it, and the end of the movable pulley connecting rod 24 with the pin hole is connected to the connecting rod sliding pin 25 and arranged coaxially with it, and the other end of the movable pulley connecting rod 24 is fixedly connected to the wire rope movable pulley 7; the upper end of the pull plate 26 is connected to the movable pulley connecting rod 24 The weight 28 is inserted into the weight tube 30 and can move up and down. The weight tube 30 is fixed to the well wall 38 by the upper and lower weight tube clamps 29. The lower limit seat 31 is fixed to the well wall 38. The lower limit adjustment bolt 32 is arranged on the lower limit seat 31. The lowest position of the weight 28 is set by adjusting the extension length of the lower limit adjustment bolt 32, and the weight 28 is prevented from falling into the well when the wire rope 13 breaks; the weight 28 is transmitted to the wire rope movable pulley 7 through the pull plate 26 and the movable pulley connecting rod 24, and the rotating It is transformed into a pulling force on the steel wire rope 13, so that the front folding plate 18 and the rear folding plate 16 remain in an arched state; when pressure is applied to the hinge between the inner connecting rod 5 and the outer connecting rod 43 through the pressure-applying component, this pressure is transmitted through the connecting rod slider mechanism composed of the fixed connecting rod pin 51, the outer connecting rod 43, the movable connecting rod pin 44, the inner connecting rod 5, the connecting rod sliding pin 25 and the connecting rod seat 6 to become an upward pulling force on the connecting rod sliding pin 25. Under the action of this pulling force, the heavy hammer 28, the movable pulley connecting rod 24 and the steel wire rope movable pulley 7 move upward, causing the steel wire rope 13 to relax and the tension on it to decrease, and then the front folding plate 18 and the rear folding plate 16 fall back to a horizontal state.

[0024] The two pressurizing components are arranged symmetrically on both sides of the car frame 37, and each of the pressurizing components includes a push rod rear seat 1, a push rod 2, a push rod front clamp 3, a push plate 4, a flattened in place switch 33, a switch plate 34, a retracted in place switch 35, an in-place switch frame 36, a push rod rear pin 40, a push rod front clamp seat 41, and a push rod pin 42. Wherein: the push rod rear seat 1 is fixed on the car frame 37, the rear end of the push rod fixed end 201 of the push rod 2 is connected to the push rod rear seat 1 through the push rod rear pin 40, and then fixed on the car frame 37, and the front end of the push rod fixed end 201 is fixed to the car frame 37 through the push rod front clamp 3 and the push rod front clamp seat 41; the push plate 4 is inserted into the push rod movable end 202 of the push rod 2 and fixed thereto through the push rod pin 42, the switch plate 34 is fixed on the push plate 4, the flat in place switch 33 and the folded in place switch 35 are fixed on the in place switch frame 36, and are fixed to the car frame 37 through the in place switch frame 36.

[0025] When the car of the automobile elevator is leveled at this floor: the control system commands the two push rods 2 on the left and right sides of the car frame 37 corresponding to the floor to be energized, so that the push rod moving end 202 begins to extend, and the push plate 4 moves forward and contacts and presses on the hinge between the inner connecting rod 5 and the outer connecting rod 43. At this time, the thrust generated by the push rod 2 is transmitted to the pressure on this hinge. This pressure increases the angle between the outer connecting rod 43 and the inner connecting rod 5, and the connecting rod sliding pin 25 drives the pulley connecting rod 24 to move upward, pulling the pull plate 26 connected to the pulley connecting rod 2 The weight 28 on 4 moves upward, and at the same time, the movable pulley 7 moves upward with the pulley connecting rod 24 under the action of the tension of the wire rope 13, and the tension of the wire rope 13 decreases and relaxes, so that the angle between the front folding plate 18 and the rear folding plate 16 gradually increases under the action of its own gravity and the resilience of the compression spring 48, until the front folding plate 18 and the rear folding plate 16 become horizontal. At this time, the switch plate 34 triggers the leveling switch 33 to instruct the push rod 2 to cut off the power, and the car can enter and exit the elevator car through this device.

[0026] When the car of the automobile elevator is about to leave the leveling floor: the control system commands the two push rods 2 on the left and right sides of the car frame 37 corresponding to the floor to be energized, so that the push rod moving end 202 begins to retract. At this time, the pressure on the hinge of the inner connecting rod 5 and the outer connecting rod 43 is decreasing. The weight 28 drives the connecting rod sliding pin 25 to move downward through the pull plate 26 under the action of its own gravity. At the same time, the angle between the outer connecting rod 43 and the inner connecting rod 5 becomes smaller, and the connecting rod sliding pin 25 drives the wire rope movable pulley 7 to move downward together. When the wire rope movable pulley 7 moves downward, the tension on the wire rope 13 increases. The tension on the wire rope 13 is transmitted through the outer rope head 23 of the wire rope and the outer rope head pin 2 2 and the outer rope head seat 21 of the wire rope are transmitted to the front folding plate 18. Under the action of this pulling force, the front folding plate 18 and the rear folding plate 16 overcome their own gravity and the elastic force of the compression spring 48 to arch upward, and the angle between the front folding plate 18 and the rear folding plate 16 gradually decreases until the weight 28 falls to the position of the lower limit adjustment bolt 32. At this time, the push rod moving end 202 continues to retract until the switch plate 34 triggers the retracted position switch 35 to instruct the push rod 2 to cut off the power. At this time, the triangular prism structure composed of the front folding plate 18 and the rear folding plate 16 blocks the front of the floor door opening 39 to prevent the car from colliding with the elevator floor door when the elevator car is not on this floor, causing danger.

[0027] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle elevator landing door anti-collision blocking device, comprising a blocking body disposed on the landing floor and located in front of the landing door, and a driving unit for driving the blocking body to arch or flatten so as to adjust the height of the blocking body to switch between a passing state and a blocking state, characterized in that: The blocking body comprises a front folding plate and a rear folding plate which are hinged to each other, the side of the rear folding plate close to the floor door being its rear side, and the other side being its front side, the rear end portion of the rear folding plate being rotatably connected to the ground, the driving unit being connected to the front folding plate, when the driving unit drives the front folding plate and the rear folding plate to arch up, the anti-collision blocking device is in a blocking state; when the driving unit drives the front folding plate and the rear folding plate to flatten, the anti-collision blocking device is in a passing state; there are two driving units, which are symmetrically arranged on the left and right sides of the blocking body, respectively, each of the driving units comprises a power unit, a steel wire rope, a reversing assembly and a reset assembly arranged in the elevator shaft, one end portion of the steel wire rope is connected to the power unit, The other end thereof is connected with the front end portion of the front folding plate, and the reversing assembly includes a wire rope fixed pulley frame, a first wire rope fixed pulley and a second wire rope fixed pulley installed on the wire rope fixed pulley frame, the wire rope passes over the top of the first wire rope fixed pulley and then passes under the second wire rope fixed pulley and is connected with the front end portion of the front folding plate, and the reset assembly includes a guide seat arranged on the left and right sides of the blocking body, a compression spring pin seat connected to the guide seat and located below the blocking body, a compression spring pin inserted in the compression spring pin seat and provided with an anti-slip nut at the rear end, and a compression spring sleeved on the compression spring pin and having a front end fixed to the front end of the compression spring pin and a rear end pressed against the front end surface of the compression spring pin seat.

2. The anti-collision blocking device for a car elevator landing door according to claim 1 is characterized in that: When the power unit drives the wire rope to move, the front folding plate is folded toward the rear end of the rear folding plate and compresses the compression spring pin until it reaches a blocking state. When the power unit reduces or eliminates the force acting on the wire rope, the compression spring pin pushes the front end of the front folding plate forward under the action of the compression spring until the front folding plate and the rear folding plate are flattened. At this time, the anti-collision blocking device is in a pass state.

3. The anti-collision blocking device for a car elevator landing door according to claim 1 is characterized in that: The power unit includes an inner connecting rod, a connecting rod seat, a movable pulley for wire rope, an inner rope head for wire rope, an inner rope head frame for wire rope, a wire rope, a movable pulley connecting rod, a connecting rod sliding pin, a pull plate, a connecting pin, a weight, a weight pipe clamp, a weight pipe, a lower limit seat, a lower limit adjustment bolt, an outer connecting rod, a movable connecting rod pin, a fixed connecting rod pin and a pressurizing component. The wire rope passes through the second fixed pulley for wire rope and the first fixed pulley for wire rope in turn, guides the direction of the wire rope from horizontal to vertical downward in the hoistway, and then passes through the movable pulley for wire rope, turns the direction of the wire rope upward and connects it to the inner rope head of the wire rope, and the inner rope head of the wire rope passes through the movable pulley for wire rope. The inner rope head frame of the wire rope is fixed to the well wall; the connecting rod seat is fixed to the well wall, the outer connecting rod is arranged between the two connecting rod seats, the pin hole at one end of the outer connecting rod is coaxially arranged with the pin hole on the connecting rod seat, the fixed connecting rod pin passes through the pin holes on the two connecting rod seats and the pin holes of the outer connecting rod and is fixed on the connecting rod seat, and the outer connecting rod can rotate around the fixed connecting rod pin; the connecting rod sliding pin is arranged in the sliding groove on the two connecting rod seats, and the connecting rod sliding pin can move along this sliding groove, one end of the inner connecting rod is connected to the other end of the outer connecting rod through a movable connecting rod pin, the other end of the inner connecting rod is connected to the connecting rod sliding pin and is coaxially arranged with it, and the movable pulley connecting rod with pin One end of the hole is connected to the connecting rod sliding pin and is arranged coaxially therewith, and the other end of the movable pulley connecting rod is fixedly connected to the wire rope movable pulley; the upper end of the pull plate is connected and fixed to the movable pulley connecting rod, and the lower end of the pull plate is connected to the heavy hammer through a connecting pin, and the heavy hammer is inserted into the heavy hammer tube and can move up and down, and the heavy hammer tube is fixed to the well wall through upper and lower heavy hammer tube clamps, and the lower limit seat is fixed to the well wall, and a lower limit adjustment bolt is arranged on the lower limit seat to set the lowest position of the heavy hammer by adjusting the extension length of the lower limit adjustment bolt, and prevent the heavy hammer from falling into the well when the wire rope breaks; the heavy hammer The self-weight is transmitted to the movable pulley of the wire rope through the pulling plate and the movable pulley connecting rod, and is converted into the tension on the wire rope, so that the front folding plate and the rear folding plate remain in the arched state; when the pressure-applying component applies pressure on the hinge of the inner connecting rod and the outer connecting rod, the pressure is transmitted to the upward pulling force on the connecting rod sliding pin through the connecting rod slider mechanism composed of the fixed connecting rod pin, the outer connecting rod, the movable connecting rod pin, the inner connecting rod, the connecting rod sliding pin and the connecting rod seat. Under the action of this pulling force, the heavy hammer, the movable pulley connecting rod and the movable pulley of the wire rope move upward, causing the wire rope to relax and the tension on it to reduce, and then the front folding plate and the rear folding plate fall back to the horizontal state.

4. The anti-collision blocking device for a car elevator landing door according to claim 3 is characterized in that: Each of the pressurizing components includes a push rod rear seat, a push rod, a push rod front clamp, a push plate, a level-in-place switch, a switch hitting plate, a folded-in-place switch, an in-place switch frame, a push rod rear pin, a push rod front clamp seat, and a push rod pin. The push rod rear seat is fixed to the car frame, and the rear end of the push rod fixed end of the push rod is connected to the push rod rear seat through the push rod rear pin and then fixed to the car frame. The front end of the push rod fixed end is fixed to the car frame through the push rod front clamp and the push rod front clamp seat; the push plate is inserted into the push rod movable end of the push rod and is fixed thereto through the push rod pin, the switch hitting plate is fixed on the push plate, the level-in-place switch and the folded-in-place switch are fixed to the in-place switch frame, and are fixed to the car frame through the in-place switch frame.

5. The anti-collision blocking device for a car elevator landing door according to claim 1 is characterized in that: The blocking body also includes a front slope and a rear slope. The front slope is arranged in front of the front folding plate and fixed on the floor door ground, and the rear slope is arranged behind the rear folding plate and fixed on the floor door ground.

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