Anti-collision device for twin elevator

Abstract

The application discloses a kind of anti-collision devices of twin elevator, to solve although in prior art, through system calculation and electrical triggering to realize twin elevator anti-collision function, not only detection part structure is complex, and once electrical system, detection system fails, then car is prone to collision.The application solves the above technical problems by the following technical solutions: safety gear is arranged on the car, and the safety gear is in braking cooperation with the slide rail;a detection pressing plate is arranged at the bottom of the car, the detection pressing plate rotates around the fulcrum, the detection pressing plate is connected to a detection block through a detection rope at a position away from the fulcrum, and the detection block hangs at the bottom of the car;a brake trigger device is connected to the detection pressing plate;the force of the brake trigger device and the detection block acts on the detection pressing plate, and the detection pressing plate maintains balance;the weight contacts with the obstacle, the detection pressing plate loses balance and rotates around the fulcrum, triggers the brake trigger device after rotation, and the brake trigger device triggers the safety gear to realize braking.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of twin elevator, more particularly, it relates to a kind of twin elevator anti-collision device. BACKGROUND

[0002] Twin elevator refers to a pair of independent car in a elevator, two cars run up and down in the same shaft, each car serves different floors, and does not interfere with each other, independent operation, passengers can choose to ride different cars to different floors. Twin elevator has the advantages of high transportation efficiency, small floor area, etc.

[0003] Since two cars move in the same shaft, in order to avoid collision between two cars, a number of anti-collision devices are provided inside, the commonly used in the prior art includes the following four anti-collision protection barriers: (1) dispatching logic control reasonably distributes the running commands of the upper and lower cars through intelligent algorithm, to ensure the safety of the running channel of the car in the shaft; (2) real-time detection and control of the distance and relative speed of the upper and lower cars based on the speed curve, to ensure that the minimum safety distance between the two cars always meets the design requirements (stop and let go of the elevator); (3) once the system detects that the safety distance of the third protection is about to be broken (trigger the brake boundary line of the safety clamp), the upper and lower cars are stopped by the way of breaking the safety circuit and making the main machine brake; (4) once the system detects that the safety distance of the fourth protection is about to be broken (trigger the brake boundary line of the safety clamp), the upper and lower cars are stopped by triggering the electronic speed limiter and making the safety clamp stop, so that the upper and lower cars are firmly stopped on the guide rail.

[0004] Although the above technical solution can prevent the collision of two cars, it has the following two shortcomings: (1) before the collision occurs, the safety clamp brakes urgently, so that the car carrying the passengers has a large braking acceleration, which may cause harm to the passengers; (2) since the anti-collision function is mainly completed by system calculation and electrical triggering, and the structure of the detection part is complex, once the electrical system and detection system fail, the cars are likely to collide with each other. SUMMARY

[0005] The present application overcomes two deficiencies in the prior art: (1) although the double elevator anti-collision function is realized by system calculation and electrical triggering, the detection part structure is complex, and once the electrical system and detection system fail, the car is prone to collision; (2) the existing double elevator anti-collision technology triggers the safety gear to brake, the passenger's car braking acceleration is large, which is easy to cause harm to the passenger; a double elevator anti-collision device is provided, which triggers the safety gear by a mechanical mode, can realize emergency braking of the car as the last safety protection barrier, and ensures safe and stable operation of the elevator; in addition, it can perform safety warning when the collision object reaches the warning position, and control the car to decelerate, and when the collision object reaches the limit position, the car is braked, thereby reducing the harm to the passenger caused by bearing a large acceleration.

[0006] To solve the above technical problems, the present application adopts the following technical scheme: a double elevator anti-collision device, comprising:

[0007] A safety gear is arranged on the car, and the safety gear is in braking cooperation with the slide rail;

[0008] A detection pressing plate is arranged at the bottom of the car, and the detection pressing plate rotates around a fulcrum, the detection pressing plate is connected with a detection block through a detection rope at a position away from the fulcrum, and the detection block falls on the bottom of the car;

[0009] A brake triggering device is connected with the detection pressing plate;

[0010] The force of the brake triggering device and the detection block acts on the detection pressing plate, and the detection pressing plate keeps balance; the weight block contacts with the obstacle, the detection pressing plate loses balance and rotates around the fulcrum, and after rotation, the brake triggering device is triggered, and the brake triggering device triggers the safety gear to brake.

[0011] In the present application, in the initial state, the pulling force of the brake triggering device and the detection block acting on the detection pressing plate through the detection rope acts on the detection pressing plate together, so that the detection pressing plate keeps balance, when the detection block at the bottom of the car collides with the obstacle (the bottom of the car or the bottom of the shaft), the pulling force of the detection block acting on the detection rope decreases or disappears, at this time, the detection pressing plate loses balance, rotates, the brake triggering device is triggered, the brake triggering device triggers the brake block of the safety gear, the brake block tightly holds the slide rail in the shaft, and the car is braked. Through the above steps, as the last protection barrier of the elevator operation, the safety gear can be triggered quickly and reliably in an emergency of the car, and the safe operation of the elevator is ensured.

[0012] As preferred, the brake triggering device comprises a triggering part, a triggering tension spring and a triggering rope; one end of the triggering part is connected with the safety clamp, one end of the triggering rope is connected with the detection pressing plate, and the other end of the triggering rope and the other end of the triggering part are both connected with the triggering tension spring; the force of the contraction of the triggering tension spring and the tension of the triggering rope are in balance; when the detection block collides with the obstacle, the tension of the triggering rope decreases, the triggering tension spring contracts, and the triggering part triggers the safety clamp to brake.

[0013] In the initial state, the triggering tension spring is in the elongated state, and there are two balance points in the application. The first balance point: the force of the contraction of the triggering tension spring and the tension of the triggering rope and the gravity of the triggering part are in balance; the second balance point: the tension of the detection block acting on the detection pressing plate and the tension of the triggering rope acting on the detection pressing plate are in balance.

[0014] When the detection block collides with the obstacle, the tension of the detection rope decreases, the tension of the triggering rope decreases, and then the triggering tension spring contracts, the triggering tension spring pulls the triggering part to move upward, the triggering part triggers the brake block of the safety clamp, and the safety clamp brakes.

[0015] As preferred, it further comprises a detection switch in contact with the detection pressing plate; the weight block contacts the obstacle, and the detection pressing plate rotates around the fulcrum to act on the detection switch.

[0016] When the detection block just touches the obstacle, the detection block is in the early warning position at this time, the detection pressing plate rotates at this time, so that the detection pressing plate acts on the detection switch, the detection switch is a normally closed switch, so that the detection switch is opened, the braking system in the car is started, thereby achieving slow braking of the car; and if the obstacle continues to approach the detection block, the obstacle reaches the limit position at this time, emergency braking is needed at this time, the second short shaft is pulled upward by the triggering tension spring, and the brake of the safety clamp is achieved.

[0017] As preferred, a fixed base is arranged at the bottom of the car, a plurality of positioning holes are arranged on the fixed base along the length direction of the fixed base, and a switch fixing seat matched with the positioning holes is arranged in the positioning holes; the position of the switch fixing seat in the positioning hole is adjusted, and then the position of the detection switch is adjusted.

[0018] The position of the switch fixing seat in the positioning hole is adjusted, and then the position of the detection switch is adjusted. The switch fixing seat is inserted in different positions of the positioning hole, and the deformation amount of the detection switch when triggered can be adjusted.

[0019] As preferred, the fixed base comprises a sliding hole arranged along the length direction of the fixed base, a plurality of positioning holes arranged on one side of the sliding hole, and an open slot arranged on the other side of the sliding hole; a fixed rod is arranged in the open slot, one end of the fixed rod is connected with a positioning block, and the other end of the fixed rod is provided with the switch fixing seat; a positioning spring is sleeved on the fixed rod and abuts against the positioning block in the positioning hole.

[0020] In normal circumstances, the positioning block can stably abut in the positioning hole under the pushing force of the positioning spring, and when it is necessary to adjust the position of the positioning block, the switch fixing seat can be directly pulled to make the positioning block disengage from the positioning hole, then the switch fixing seat is moved to make the fixing rod slide along the opening groove, and when the positioning block reaches the designated positioning hole, the hand is released, and the positioning block is re-engaged in the positioning hole under the action of the positioning spring. Therefore, through the above structure, the position of the detection switch can be conveniently adjusted, and the deformation amount when the detection switch is triggered can be conveniently adjusted.

[0021] As a preferred, it further comprises a safety clamp synchronization mechanism, which comprises a synchronization pull rod and a short shaft assembly arranged at both ends of the synchronization pull rod respectively, and the short shaft assembly at both ends of the synchronization pull rod is connected with the trigger part of the two safety clamps respectively; the short shaft assembly comprises a first short shaft and a second short shaft; the first short shaft and the second short shaft are fixedly connected with the central rotating shaft; the end of the first short shaft away from the second short shaft is rotatably connected with the synchronization pull rod; and the end of the second short shaft away from the first short shaft is connected with the trigger part.

[0022] In order to obtain more stable braking force when the car is in emergency braking, one safety clamp is usually arranged on each side of the car, and in order to realize the synchronous braking of the two safety clamps, a safety clamp synchronization mechanism is arranged on the car in the embodiment, so that the safety clamps on both sides of the car can realize synchronous braking when an emergency occurs.

[0023] As a preferred, a spring baffle is arranged on the car, the synchronization pull rod is arranged on the spring baffle, and an abutting ring is arranged on the synchronization pull rod; a reset spring is sleeved on the synchronization pull rod, and the two ends of the reset spring are respectively abutted with the abutting ring and the spring baffle.

[0024] The reset spring can push the abutting ring, so that the synchronization pull rod is kept in reset, and the synchronization pull rod is kept in the initial state.

[0025] As a preferred, a short shaft hole is arranged on the second short shaft; one end of a trigger tension spring is connected with the car, and the other end of the trigger tension spring is connected with the short shaft hole; and an end of a detection rope is connected with the short shaft hole.

[0026] One end of the trigger tension spring is connected with the car, and the other end of the trigger tension spring is connected with the short shaft hole; and an end of the detection rope is connected with the short shaft hole; and the arrangement is more convenient.

[0027] As a preferred, a guide pipe is sleeved on the trigger rope.

[0028] The guide pipe can guide and protect the trigger rope, and the trigger rope can smoothly slide in the guide pipe.

[0029] As a preferred, a micro switch is arranged at the end of the second short shaft away from the pull rod, and a trigger head of the micro switch is abutted with the second short shaft.

[0030] Micro switch can detect the working state of the second short axis, once the second short axis appears movement, detection switch can detect in time, make the alarm sound in the car.

[0031] Compared with the prior art, the beneficial effects of the present application are:

[0032] (1) brake trigger device, detection block through the detection rope acting on the detection pressure plate, so that the detection pressure plate keeps balance, when the detection block at the bottom of the car collides with the obstacle (the bottom of the car or the bottom of the shaft), the tension of the detection rope acting on the detection block decreases or disappears, at this time, the detection pressure plate loses balance, the detection pressure plate rotates, the brake trigger device triggers the brake block of the safety gear, the brake block clamps the slide rail in the shaft, realizing the braking of the car. Through the above steps, it can be used as the last protective barrier for elevator operation, which can trigger the safety gear quickly and reliably when the car appears emergency, ensuring the safe operation of the elevator;

[0033] (2) when the detection block just touches the obstacle, the detection block is in the early warning position at this time, the detection pressure plate rotates immediately, so that the detection pressure plate acts on the detection switch, the detection switch is normally closed, so that the detection switch is opened, the braking system in the car is started, so as to realize the slow braking of the car; if the obstacle continues to approach the detection block, the obstacle reaches the limit position, at this time, emergency braking is needed, the trigger spring pulls the second short shaft to rotate upward, realizing the braking of the safety gear. Therefore, before the detection block or the obstacle reaches the limit position, the car can realize slow deceleration, so as to reduce the injury of passengers caused by the emergency braking of the car. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is the structural schematic diagram of the present application.

[0035] Figure 2 is Figure 1 the local enlarged view in

[0036] Figure 3 is the structural schematic diagram of the trigger braking device and safety gear synchronous mechanism of the present application.

[0037] Figure 4 is the cooperation schematic diagram between the detection pressure plate and the fixed base of the present application.

[0038] Figure 5 is the three-dimensional structural diagram of the fixed base of the present application.

[0039] Figure 6 is the three-dimensional structural diagram of the fixed base in another embodiment of the present application.

[0040] Figure 7 is a sectional view of the fixed base of the present application.

[0041] Figure: 1, safety tongs;

[0042] 2, detection plate, 21, detection rope, 22, detection block, 23, fulcrum, 24, guide tube;

[0043] 3, brake trigger device, 31, trigger part, 32, trigger tension spring, 33, trigger rope;

[0044] 4, safety tongs synchronization mechanism, 41, synchronization pull rod, 411, abutting ring, 412, adjusting nut, 42, first short shaft, 43, second short shaft, 431, short shaft hole, 44, center rotating shaft, 45, spring baffle, 46, micro switch;

[0045] 5, detection switch;

[0046] 6, fixed base, 61, positioning hole, 62, sliding hole, 621, open slot;

[0047] 7, switch fixing seat, 71, fixing rod, 72, positioning block, 73, positioning spring;

[0048] 8, car. DETAILED DESCRIPTION

[0049] The technical solutions of the present application will be further described in detail below through specific embodiments and in combination with the drawings:

[0050] Example 1: Referring to Figures 1 to 4 the figure, a doublet elevator anti-collision device, comprising:

[0051] The safety tongs 1 is arranged on the car 8, and the safety tongs 1 is in braking cooperation with the slide rail;

[0052] The detection plate 2 is arranged at the bottom of the car 8, and the detection plate 2 rotates around the fulcrum 23. The detection plate 2 is connected to the detection block 22 through the detection rope 21 at a position away from the fulcrum 23, and the detection block 22 hangs at the bottom of the car 8;

[0053] The brake trigger device 3 is connected to the detection plate 2;

[0054] The force of the brake trigger device 3 and the detection block 22 acts on the detection plate 2, and the detection plate 2 keeps balance; the weight block contacts the obstacle, the detection plate 2 loses balance and rotates around the fulcrum 23, and after rotating, the brake trigger device 3 is triggered, and the safety tongs 1 is triggered to realize braking.

[0055] In the initial state, the brake trigger device 3 and the detection block 22 act on the detection pressure plate 2 through the detection rope 21, so that the detection pressure plate 2 keeps balance. When the detection block 22 at the bottom of the car 8 collides with the obstacle (the bottom of the car 8 or the bottom of the shaft), the tension of the detection rope 21 decreases or disappears, and the detection pressure plate 2 loses balance and rotates, triggering the brake trigger device 3. The brake trigger device 3 triggers the brake block of the safety gear 1, and the brake block clamps the slide rail in the shaft, achieving the braking of the car 8. Through the above steps, the safety gear 1 can be triggered quickly and reliably as the last protective barrier for the elevator operation, ensuring the safe operation of the elevator.

[0056] Embodiment 2: Reference Figures 1 to 4 As shown in the figure, a collision-preventing device for a double elevator includes:

[0057] The safety gear 1 is arranged on the car 8 and is in braking cooperation with the slide rail in the shaft. When the car 8 moves up and down in the shaft, the safety gear 1 cooperates with the slide rail in the shaft. When an emergency occurs, the safety gear 1 clamps the slide rail, so that the car 8 stops.

[0058] The detection pressure plate 2 is arranged at the bottom of the car 8 and rotates around the fulcrum 23. The detection pressure plate 2 is connected to the detection block 22 through the detection rope 21 at a position away from the fulcrum 23, and the detection block 22 falls at the bottom of the car 8.

[0059] The brake trigger device 3 is connected to the detection pressure plate 2.

[0060] The force of the brake trigger device 3 and the detection block 22 acts on the detection pressure plate 2, and the detection pressure plate 2 keeps balance. When the weight contacts the obstacle, the detection pressure plate 2 loses balance and rotates around the fulcrum 23, triggering the brake trigger device 3 after rotation, and the brake trigger device 3 triggers the safety gear 1 to achieve braking.

[0061] The detection pressure plate 2 is connected to the bottom of the car 8, so that the detection pressure plate 2 can rotate around the fulcrum 23. The fulcrum 23 can be arranged at any position of the detection pressure plate 2, for example, it can be arranged at the middle position of the detection pressure plate 2, and the detection block 22 can be connected to the detection pressure plate 2 through the detection rope 21. In this embodiment, for convenience of arrangement, the detection pressure plate 2 is hinged to the bottom of the car 8 at one end, so that the hinge point of the detection pressure plate 2 and the bottom of the car 8 is the fulcrum 23, and the other end of the detection pressure plate 2 is connected to the detection rope 21.

[0062] In one embodiment, the trigger rope 33 is sleeved with a guide pipe 24. The guide pipe 24 can guide and protect the trigger rope 33, and the trigger rope 33 can smoothly slide in the guide pipe 24.

[0063] In one embodiment, the brake trigger device 3 comprises a trigger part 31, a trigger spring 32 and a trigger rope 33. The trigger part 31 can be in the shape of a rope or a rod. In this embodiment, the trigger part 31 is in the shape of a long rod. One end of the trigger part 31 is connected to the safety clamp 1, specifically, the trigger part 31 is connected to the brake block of the safety clamp 1. One end of the trigger rope 33 is connected to the detection plate 2, and the other end of the trigger rope 33 is connected to the other end of the trigger part 31. The trigger spring 32 is connected to the trigger rope 33 and the other end of the trigger part 31.

[0064] In the initial state, the trigger spring 32 is in the stretched state, and there are two balance points in this application. The first balance point is that the force of the trigger spring 32 is balanced with the tension of the trigger rope 33 and the gravity of the trigger part 31. The second balance point is that the tension of the detection block 22 acting on the detection plate 2 is balanced with the tension of the trigger rope 33 acting on the detection plate 2.

[0065] When the detection block 22 collides with the obstacle, the tension of the detection rope 21 decreases, which causes the tension of the trigger rope 33 to decrease, and in turn causes the trigger spring 32 to contract. The trigger spring 32 pulls the trigger part 31 to move upward, which causes the trigger part 31 to trigger the brake block of the safety clamp 1, and the safety clamp 1 achieves braking.

[0066] In addition, in this embodiment, the trigger rope 33 and the detection rope 21 are both connected to the detection plate 2, so the connection positions of the trigger rope 33 and the detection rope 21 to the detection plate 2 can be the same or different. The fulcrum 23 of the detection plate 2 is point O, the connection position of the detection rope 21 to the detection plate 2 is point A, and the moment of the detection rope 21 acting on the detection plate 2 through point A is T1. The connection position of the trigger rope 33 to the detection plate 2 is point B, and the moment of the trigger rope 33 acting on the detection plate 2 through point B is T2. Therefore, the relationship between T1 and T2 can be adjusted by adjusting the positions of points A and B, and the positions of points A and B can be adjusted according to the actual situation, and in turn the relationship between T1 and T2 can be adjusted, so that the best braking state can be achieved according to the actual situation in different carriages 8.

[0067] In one embodiment, a safety clamp synchronization mechanism 4 is provided on the carriage 8. In order to obtain a more stable braking force when the carriage 8 is in emergency braking, a safety clamp 1 is usually provided on each side of the carriage 8. In order to achieve synchronous braking of the two safety clamps 1, a safety clamp synchronization mechanism is provided on the carriage 8 in this embodiment, so that the safety clamps 1 on both sides of the carriage 8 can achieve synchronous braking when an emergency occurs.

[0068] The safety clamp synchronization mechanism in the embodiment comprises a synchronization pull rod 41 and short shaft assemblies arranged at both ends of the synchronization pull rod 41 respectively. The synchronization pull rod 41 is arranged obliquely on the top of the car 8, and the short shaft assemblies at both ends are connected with the trigger parts 31 of the safety clamps 1 on both sides of the car 8 respectively; the short shaft assemblies at both ends are of the same structure.

[0069] Both of the short shaft assemblies comprise a first short shaft 42 and a second short shaft 43; the first short shaft 42 and the second short shaft 43 are fixedly connected with a central rotating shaft 44 arranged on the car 8, and the central rotating shaft 44 can rotate freely; the first short shaft 42 and the second short shaft 43 form a "L" shaped structure in cooperation with the central rotating shaft 44. The end of the first short shaft 42 away from the second short shaft is rotationally connected with the synchronization pull rod 41; the end of the second short shaft 43 away from the first short shaft 42 is connected with the trigger part 31.

[0070] In the embodiment, a short shaft hole 431 is arranged on the second short shaft 43 for more reasonable structure and convenient arrangement; one end of a trigger pull spring 32 is connected with the car 8, and the other end of the trigger pull spring 32 is connected with the short shaft hole 431; the end of the detection rope 21 is connected with the short shaft hole 431.

[0071] When the trigger pull spring 32 pulls the second short shaft 43 to rotate around the central rotating shaft 44, the second short shaft 43 pulls the trigger part 31 on the safety clamp 1 on one side to realize braking; at the same time, the first rotating shaft is driven to rotate by the central rotating shaft 44, and the first rotating shaft pulls the synchronization pull rod 41 to make the synchronization pull rod 41 pull the second short shaft 43 on the other side, so that the second short shaft 43 on the other side rotates around the central rotating shaft 44 on the other side, and the first rotating shaft on the other side rotates to drive the trigger part 31 of the safety clamp 1 on the other side to realize braking.

[0072] A spring baffle 45 is arranged on the car 8, the synchronization pull rod 41 passes through the spring baffle 45, and an abutting ring 411 is arranged on the synchronization pull rod 41; a reset spring is sleeved on the synchronization pull rod 41, and both ends of the reset spring are abutted with the abutting ring 411 and the spring baffle 45 respectively. Meanwhile, an adjusting nut 412 capable of adjusting the length of the synchronization pull rod 41 is arranged on the synchronization pull rod 41.

[0073] The reset spring can push the abutting ring 411 to keep the synchronization pull rod 41 reset, and the synchronization pull rod 41 keeps the initial state.

[0074] In one of the embodiments, a micro switch 46 is arranged at the end of the second short shaft 43 away from the pull rod, and the trigger head of the micro switch 46 abuts with the second short shaft 43. In the embodiment, the micro switch 46 is arranged only on the short shaft assembly on one side, and the micro switch 46 can detect the working state of the second short shaft 43. Once the second short shaft 43 moves, the detection switch 5 can detect it in time, so that an alarm sound is sounded in the car 8.

[0075] It should be noted that in the specific design, the acceleration of the car 8 in the start acceleration and stop deceleration needs to be considered, so as to adjust the compression amount of the micro switch 46 and the extension amount of the trigger spring, prevent false alarm of the micro switch 46 and false braking of the safety gear 1, and enable the related structure in the application to operate normally.

[0076] The working principle of the embodiment is as follows:

[0077] In the normal operation state of the elevator, the trigger part 31 is in a relaxed state, and the safety gear 1 smoothly slides along the slide rail in the shaft; the tension of the trigger rope 33 and the gravity of the detection block 22 jointly act on the detection pressure plate 2, so that the detection pressure plate 2 is balanced;

[0078] When the detection block 22 at the bottom of the car 8 collides with an obstacle (the bottom of the car 8 or the bottom of the shaft), the tension of the detection block 22 acting on the detection rope 21 decreases or disappears, so that the tension of the trigger rope 33 decreases, and then the trigger tension spring 32 contracts, and the trigger tension spring 32 pulls the second short shaft 43 to rotate upward;

[0079] The second short shaft 43 pulls the trigger part 31 on one side of the safety gear 1 to achieve braking; at the same time, the first shaft is driven to rotate through the center shaft 44, and the first shaft rotates to pull the synchronous pull rod 41, so that the synchronous pull rod 41 pulls the second short shaft 43 on the other side, the second short shaft 43 on the other side rotates around the center shaft 44 on the other side, so that the first shaft on the other side rotates, thereby driving the trigger part 31 of the safety gear 1 on the other side to achieve braking.

[0080] Reset process: after the emergency contact, the safety gear 1 needs to be reset, and by adjusting the adjusting nut 412, the trigger tension spring 32 and other components, the positions of the components can be adjusted, preparing for the next use.

[0081] Through the above steps, the last protection barrier for elevator operation can be achieved, which can quickly and reliably trigger the safety gear 1 when the car 8 has an emergency, and ensure the safe operation of the elevator.

[0082] Embodiment 3: Referring to Figures 1 to 7 As shown in the figure, a double elevator anti-collision device comprises:

[0083] The safety gear 1 is arranged on the car 8, and the safety gear 1 is in braking cooperation with the slide rail in the shaft; when the car 8 moves up and down in the shaft, the safety gear 1 cooperates with the slide rail in the shaft, and when an emergency occurs, the safety gear 1 tightly holds the slide rail, so that the car 8 stops.

[0084] The detection pressing plate 2 is arranged at the bottom of the car 8, and rotates around the supporting point 23. The detection pressing plate 2 is connected to the detection block 22 through the detection rope 21 at a position away from the supporting point 23, and the detection block 22 is hung at the bottom of the car 8.

[0085] The brake triggering device 3 is connected to the detection pressing plate 2.

[0086] The force of the brake triggering device 3 and the detection block 22 acts on the detection pressing plate 2, and the detection pressing plate 2 keeps balance. When the weight contacts the obstacle, the detection pressing plate 2 loses balance and rotates around the supporting point 23. After rotation, the brake triggering device 3 is triggered, and the safety clamp 1 is triggered to brake.

[0087] The detection pressing plate 2 is connected to the bottom of the car 8, so that the detection pressing plate 2 can rotate around the supporting point 23. The supporting point 23 can be arranged at any position of the detection pressing plate 2, for example, can be arranged at the middle position of the detection pressing plate 2, and the detection block 22 can be connected to the detection pressing plate 2 through the detection rope 21. In order to facilitate arrangement, in the embodiment, one end of the detection pressing plate 2 is hinged to the bottom of the car 8, and the hinge point of the detection pressing plate 2 and the bottom of the car 8 is the supporting point 23, and the other end of the detection pressing plate 2 is connected to the detection rope 21.

[0088] In one embodiment, the triggering rope 33 is sleeved with a guide pipe 24. The guide pipe 24 can guide and protect the triggering rope 33, and the triggering rope 33 can smoothly slide in the guide pipe 24.

[0089] In one embodiment, the brake triggering device 3 includes a triggering part 31, a triggering tension spring 32 and a triggering rope 33. The triggering part 31 can be in a rope shape or a rod shape, and in the embodiment, the triggering part 31 is a long rod. One end of the triggering part 31 is connected to the safety clamp 1, and specifically, the triggering part 31 is connected to the brake block of the safety clamp 1. One end of the triggering rope 33 is connected to the detection pressing plate 2, and the other end of the triggering rope 33 and the other end of the triggering part 31 are both connected to the triggering tension spring 32.

[0090] In the initial state, the triggering tension spring 32 is in a stretched state, and there are two balance points in the application. The first balance point is that the contraction force of the triggering tension spring 32, the pulling force of the triggering rope 33 and the gravity of the triggering part 31 keep balance. The second balance point is that the pulling force of the detection block 22 acting on the detection pressing plate 2 and the pulling force of the triggering rope 33 acting on the detection pressing plate 2 keep balance.

[0091] When the detection block 22 collides with the obstacle, the pulling force of the detection rope 21 decreases, the pulling force of the triggering rope 33 decreases, and then the triggering tension spring 32 contracts. The triggering tension spring 32 pulls the triggering part 31 to move upward, so that the triggering part 31 triggers the brake block of the safety clamp 1, and the safety clamp 1 brakes.

[0092] In addition, the trigger rope 33 and the detection rope 21 in the embodiment are connected with the detection pressing plate 2, and the connection positions of the trigger rope 33 and the detection rope 21 with the detection pressing plate 2 can be the same or different. The fulcrum 23 of the detection pressing plate 2 is point O, the connection position of the detection rope 21 with the detection pressing plate 2 is point A, the moment of force of the detection rope 21 acting on the detection pressing plate 2 through point A is T1, and the connection position of the trigger rope 33 with the detection pressing plate 2 is point B, and the moment of force of the trigger rope 33 acting on the detection pressing plate 2 through point B is T2. Therefore, the relationship between T1 and T2 can be adjusted by adjusting the positions of points A and B, the positions of points A and B can be adjusted according to actual conditions, and the relationship between T1 and T2 can be adjusted, so that the best braking state can be achieved according to the actual conditions in different cars 8.

[0093] In one embodiment, a safety shoe synchronization mechanism 4 is further arranged on the car 8. In order to obtain more stable braking force of the car 8 in emergency braking, one safety shoe 1 is usually arranged on each side of the car 8, and in order to realize synchronous braking of the two safety shoes 1, the safety shoe synchronization mechanism is arranged on the car 8 in the embodiment, so that the safety shoes 1 on both sides of the car 8 can realize synchronous braking when an emergency occurs.

[0094] The safety shoe synchronization mechanism in the embodiment comprises a synchronization pull rod 41 and short shaft assemblies arranged at both ends of the synchronization pull rod 41. The synchronization pull rod 41 is arranged obliquely on the top of the car 8, and the short shaft assemblies at both ends are connected with the trigger parts 31 of the safety shoes 1 on both sides of the car 8, respectively. The short shaft assemblies at both ends are of the same structure.

[0095] Both short shaft assemblies comprise a first short shaft 42 and a second short shaft 43. The first short shaft 42 and the second short shaft 43 are fixedly connected with a central rotating shaft 44, the central rotating shaft 44 is arranged on the car 8, and the central rotating shaft 44 can rotate freely. The first short shaft 42 and the second short shaft 43 form a "L" shaped structure through the cooperation of the central rotating shaft 44. The end of the first short shaft 42 away from the second short shaft is rotatably connected with the synchronization pull rod 41, and the end of the second short shaft 43 away from the first short shaft 42 is connected with the trigger part 31.

[0096] In the embodiment, a short shaft hole 431 is arranged on the second short shaft 43 for more reasonable structure and convenient arrangement. One end of the trigger tension spring 32 is connected with the car 8, and the other end of the trigger tension spring 32 is connected with the short shaft hole 431. The end of the detection rope 21 is connected with the short shaft hole 431.

[0097] When the trigger spring 32 pulls the second short shaft 43 to rotate around the central rotating shaft 44, the second short shaft 43 pulls the trigger part 31 on the safety clamp 1 on one side to realize braking; at the same time, the central rotating shaft 44 drives the first rotating shaft to rotate, and the first rotating shaft pulls the synchronous pull rod 41 to make the synchronous pull rod 41 pull the second short shaft 43 on the other side, so that the second short shaft 43 on the other side rotates around the central rotating shaft 44 on the other side, so that the first rotating shaft on the other side rotates to drive the trigger part 31 of the safety clamp 1 on the other side to realize braking.

[0098] The spring baffle 45 is arranged on the car 8, the synchronous pull rod 41 passes through the spring baffle 45, and the abutting ring 411 is arranged on the synchronous pull rod 41; the reset spring is sleeved on the synchronous pull rod 41, and the two ends of the reset spring are respectively abutted with the abutting ring 411 and the spring baffle 45. Meanwhile, the adjusting nut 412 capable of adjusting the length of the synchronous pull rod 41 is arranged on the synchronous pull rod 41.

[0099] The reset spring can push the abutting ring 411, so that the synchronous pull rod 41 is kept reset and keeps the initial state.

[0100] In one of the embodiments, the micro switch 46 is arranged on the end of the second short shaft 43 away from the pull rod, and the trigger head of the micro switch 46 is abutted with the second short shaft 43. In this embodiment, the micro switch 46 is arranged on the short shaft assembly on one side only, and the micro switch 46 can detect the working state of the second short shaft 43. Once the second short shaft 43 moves, the detection switch 5 can detect it in time, so that the alarm sound in the car 8 is sounded.

[0101] The structure of this embodiment is similar to that in the embodiment 2, and the difference lies in that the detection switch 5 in contact with the detection pressing plate 2 is further included; the weight is in contact with the obstacle, and the detection pressing plate 2 rotates around the fulcrum 23 to act on the detection switch 5.

[0102] When the detection block 22 just touches the obstacle, the detection block 22 is in the early warning position at this time, the detection pressing plate 2 rotates immediately at this time, so that the detection pressing plate 2 acts on the detection switch 5, the detection switch 5 is a normally closed switch, so that the detection switch 5 is opened, and the braking system in the car 8 is started, so that the car 8 is slowly braked; if the obstacle continues to approach the detection block 22, the obstacle reaches the limit position at this time, and emergency braking is needed at this time, so that the trigger spring 32 pulls the second short shaft 43 to rotate upward, so that the safety clamp 1 is braked.

[0103] Therefore, before the detection block 22 or the obstacle reaches the limit position, the car 8 can already realize slow deceleration, so as to reduce the injury of passengers caused by the emergency braking of the car 8.

[0104] In addition, a fixed base 6 is arranged at the bottom of the car 8, the fixed base 6 is provided with a plurality of positioning holes 61 arranged along the length direction of the fixed base 6, and a switch fixing base 7 matched with the positioning holes 61 is arranged in the positioning holes 61; the position of the switch fixing base 7 in the positioning hole 61 is adjusted, so as to adjust the position of the detection switch 5. The switch fixing base 7 is inserted into different positioning holes 61, so that the deformation amount of the detection switch 5 when triggered can be adjusted.

[0105] The fixed base 6 comprises a sliding hole 62 arranged along the length direction of the fixed base 6, a plurality of positioning holes 61 are arranged on one side of the sliding hole 62, and an open slot 621 is arranged on the other side of the sliding hole 62; a fixed rod 71 is arranged in the open slot 621, one end of the fixed rod 71 is connected with a positioning block 72, and the other end of the fixed rod 71 is provided with the switch fixing base 7; a positioning spring 73 is sleeved on the fixed rod 71 and abuts against the positioning block 72. The positioning spring 73 is sleeved on the fixed base, one end of the positioning spring 73 abuts against the positioning block 72, and the other end abuts against the inner side wall of the sliding hole 62.

[0106] Under normal circumstances, the positioning block 72 can stably abut against the positioning hole 61 under the pushing force of the positioning spring 73, and when it is necessary to adjust the position of the positioning block 72, the switch fixing base 7 can be directly pulled to make the positioning block 72 separate from the positioning hole 61, and then the switch fixing base 7 is moved to make the fixed rod 71 slide along the open slot 621, and when the positioning block 72 reaches a specified positioning hole 61, the hand is released, and the positioning block 72 is re-clamped in the positioning hole 61 under the action of the positioning spring 73. Therefore, through the above structure, the position of the detection switch 5 can be conveniently adjusted, and the deformation amount of the detection switch 5 when triggered can be conveniently adjusted.

[0107] It should be noted that in the specific design, the acceleration of the car 8 during start-up acceleration and stop deceleration needs to be considered, so as to adjust the compression amount of the micro switch 46 and the extension amount of the trigger spring, prevent false alarms of the micro switch 46 and the detection switch 5, and prevent false braking of the safety gear 1, so that the related structure in the application can normally operate.

[0108] The working principle of the embodiment is as follows:

[0109] Under the normal operating state of the elevator, the trigger part 31 is in a relaxed state, and the safety gear 1 smoothly slides along the slide rail in the shaft; the pulling force of the trigger rope 33 and the gravity of the detection block 22 jointly act on the detection pressing plate 2, so that the detection pressing plate 2 keeps balance;

[0110] When the detection block 22 at the bottom of the car 8 collides with the obstacle (the bottom of the car 8 or the bottom of the shaft), at this time the detection block 22 is in the pre-warning position, at this time the detection plate 2 rotates immediately, so that the detection plate 2 acts on the detection switch 5, the detection switch 5 is a normally closed switch, so that the detection switch 5 is opened, the brake system in the car 8 is started, so as to realize the slow braking of the car 8 (at this time although the detection plate 2 rotates, the trigger rope 33 is pulled to move, the second short shaft 43, because the movement allowance of the second short shaft 43 is set, so it will not cause the second short shaft 43 to pull the trigger part 31.); If the obstacle continues to approach the detection block 22, the obstacle reaches the limit position, at this time emergency braking is needed, the trigger tension spring 32 pulls the second short shaft 43 to rotate upward;

[0111] The second short shaft 43 pulls the trigger part 31 on the safety clamp 1 on one side to realize braking; at the same time, the first rotating shaft is driven to rotate by the center rotating shaft 44, the first rotating shaft rotates to pull the synchronous pull rod 41, so that the synchronous pull rod 41 pulls the second short shaft 43 on the other side, the second short shaft 43 on the other side rotates around the center rotating shaft 44 on the other side, so that the first rotating shaft on the other side rotates, thereby driving the trigger part 31 of the safety clamp 1 on the other side to realize braking.

[0112] Reset process: after the emergency contact, the safety clamp 1 needs to be reset, by adjusting the adjusting nut 412, the trigger tension spring 32 and other components, the positions of the components can be adjusted, preparing for the next use.

[0113] Through the above steps, it can be used as the last protection barrier for the operation of the elevator, and can quickly and reliably trigger the safety clamp 1 when the car 8 has an emergency, so as to ensure the safe operation of the elevator.

[0114] The above-described embodiments are only the preferred schemes of the present application, and do not limit the present application in any form, and there are other variations and modifications without exceeding the technical scheme recorded in the claims.

Claims

1. A collision preventing device for twin elevators, characterized by, The application relates to a safety device for an elevator, which comprises the following parts: a safety clamp arranged on a car, the safety clamp being in braking cooperation with a sliding rail; a detection pressing plate arranged at the bottom of the car, the detection pressing plate being rotatable around a fulcrum, the detection pressing plate being connected with a detection block through a detection rope at a position away from the fulcrum, and the detection block being hung at the bottom of the car; a braking trigger device connected with the detection pressing plate; the force of the braking trigger device and the detection block is applied to the detection pressing plate, the detection pressing plate keeps balance; when the weight contacts with an obstacle, the detection pressing plate loses balance and rotates around the fulcrum, and after rotation, the braking trigger device is triggered to realize braking of the safety clamp.

2. The collision preventing apparatus for a doublet elevator according to claim 1, wherein The braking trigger device comprises a trigger part, a trigger tension spring and a trigger rope; one end of the trigger part is connected with the safety clamp, one end of the trigger rope is connected with the detection pressing plate, and the other end of the trigger rope is connected with the other end of the trigger part and the trigger tension spring; the force of the contraction of the trigger tension spring and the tension of the trigger rope keep balance; when the detection block collides with the obstacle, the tension of the trigger rope decreases, the trigger tension spring contracts, and the trigger part triggers the safety clamp to realize braking.

3. The anti-collision device for doublet elevators according to claim 1 or 2, characterized in that, The safety device further comprises a detection switch in contact with the detection pressing plate; when the weight contacts with the obstacle, the detection pressing plate rotates around the fulcrum and acts on the detection switch.

4. The anti-collision apparatus for doublet elevators according to claim 3, wherein A fixed base is arranged at the bottom of the car, a plurality of positioning holes are arranged on the fixed base along the length direction of the fixed base, and a switch fixing base matched with the positioning holes is arranged in the positioning holes; the position of the switch fixing base in the positioning hole is adjusted, so that the position of the detection switch is adjusted.

5. The anti-collision device of a doublet elevator according to claim 4, wherein The fixed base comprises a sliding hole arranged along the length direction of the fixed base, a plurality of positioning holes are arranged on one side of the sliding hole, and an open slot is arranged on the other side of the sliding hole; a fixed rod is arranged in the open slot, one end of the fixed rod is connected with a positioning block, and the other end of the fixed rod is provided with the switch fixing base; a positioning spring is sleeved on the fixed rod and abuts against the positioning block in the positioning hole.

6. The anti-collision apparatus for doublet elevators according to claim 2, wherein The safety device further comprises a safety clamp synchronization mechanism, which comprises a synchronization pull rod and short shaft assemblies arranged at two ends of the synchronization pull rod respectively, the short shaft assemblies at the two ends of the synchronization pull rod are connected with trigger parts of two safety clamps respectively; the short shaft assembly comprises a first short shaft and a second short shaft; the first short shaft and the second short shaft are fixedly connected with a central rotating shaft; the end of the first short shaft away from the second short shaft is rotatably connected with the synchronization pull rod; and the end of the second short shaft away from the first short shaft is connected with the trigger part.

7. The anti-collision device of a doublet elevator according to claim 6, wherein A spring baffle is arranged on the car, the synchronization pull rod is arranged on the spring baffle, and an abutting ring is arranged on the synchronization pull rod; a reset spring is sleeved on the synchronization pull rod, and the two ends of the reset spring are respectively in abutment with the abutting ring and the spring baffle.

8. The anti-collision device of a doublet elevator according to claim 6 or 7, characterized in that, A short shaft hole is arranged on the second short shaft; one end of the trigger tension spring is connected with the car, and the other end of the trigger tension spring is connected with the short shaft hole; and an end of the detection rope is connected with the short shaft hole.

9. The anti-collision apparatus for doublet elevators according to claim 2, wherein The trigger rope is sleeved with a guide pipe.

10. The anti-collision apparatus of the doublet elevator according to claim 6, wherein A micro switch is arranged at the end of the second short shaft away from the pull rod, and a trigger head of the micro switch is in abutment with the second short shaft.

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