Double-elevator anti-collision device

Abstract

The utility model discloses a double-elevator anti-collision device, which relates to the technical field of elevator equipment and comprises an upper elevator car and a lower elevator car, the bottom of the upper elevator car and the bottom of the lower elevator car are respectively provided with a first locking device connected with a guide rail, the first locking device of the upper elevator car is connected with an upper safety gear ejector rod, and the first locking device of the lower elevator car is connected with a lower safety gear ejector rod. The first locking device of the lower lift car is connected with a lower safety gear ejector rod, the upper safety gear ejector rod and the lower safety gear ejector rod are located on the same straight line and face each other, and when the upper safety gear ejector rod collides with the lower safety gear ejector rod, the first locking device connected with the upper safety gear ejector rod and the lower safety gear ejector rod is driven to lock the guide rail; and under the condition that the original linkage of the safety tongs and the speed governor is not influenced, the anti-collision risk of the double-elevator is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator equipment, in particular to an anti-collision device for twin elevators. Background Art

[0002] Compared with ordinary elevators, there is a risk that the upper and lower elevators in the same shaft will collide with each other during operation. The anti-collision problem of the double elevators in the same shaft is the primary problem that needs to be urgently solved before the double elevators in the same shaft can be put into use. At present, anti-collision mainly detects the relative distance between the two elevators in real time through sensor elements, and processes and analyzes the data information through the microcontroller of the dynamic optimization control module, and sends the data processing results to the alarm display and execution protection module to execute other components to slow down and brake. At present, anti-collision is based on electrical triggering, which cannot guarantee the safety of the elevator in the event of electrical failures such as power outages or electrical signal interference, and cannot completely rely on mechanical components to protect the elevator from collision.

[0003] For example, Chinese patent CN208008293U, published on October 26, 2018, discloses an anti-fall device for an energy-saving elevator, including an elevator shaft, gear guide rails are fixed inside both sides of the elevator shaft, and a car is movably connected inside the elevator shaft; a forward and reverse motor is fixed in the cavity of the car, the output shaft of the forward and reverse motor is rotatably connected to a rotating shaft, the end of the rotating shaft is rotatably connected to a first bevel gear, one side of the first bevel gear is meshedly connected to a second bevel gear, a lead screw is rotatably penetrated through the inner wall of the second bevel gear, the lead screw extends to the outer wall of the car and a limited baffle is fixed at the end, a bearing is provided at the connection between the lead screw and the cavity of the car, a ball nut is rotatably sleeved on the outer wall of the lead screw, a fixed rotating shaft is fixed to a side surface of the ball nut, and a reinforcing gear is rotatably connected to the end of the fixed rotating shaft; a sliding port for the sliding of the reinforcing gear is opened on one side surface of the car, and the emergency braking of the car by the anti-fall device can be increased by the provided reinforcing gear and the reinforcing gear meshing and stuck in the corresponding gear guide rail. This solution uses electric motor electronic control drive, which is prone to failure. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing twin elevator anti-collision device has a large safety hazard. A twin elevator anti-collision device is proposed, which is equipped with an anti-collision device that completely relies on mechanical parts to reduce the probability of accidents.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a twin elevator anti-collision device, comprising an upper car and a lower car, the bottom of the upper car and the bottom of the lower car are respectively provided with a first locking device connected to the guide rail, the first locking device of the upper car is connected to the upper safety clamp top rod, the first locking device of the lower car is connected to the lower safety clamp top rod, the upper safety clamp top rod and the lower safety clamp top rod are located in the same straight line and face oppositely, and when the upper safety clamp top rod collides with the lower safety clamp top rod, the first locking device connected thereto is driven to lock the guide rail.

[0006] A twin elevator anti-collision device, an upper car and a lower car move in the same shaft, when a fault occurs, there is a risk that the upper car and the lower car approach each other and collide, before the upper car and the lower car collide, the upper safety clamp top rod and the lower safety clamp top rod collide first, which will drive the first locking device connected to the upper safety clamp top rod and the lower safety clamp top rod respectively to lock the guide rail, thereby realizing the locking and stopping of the upper car and the lower car.

[0007] Preferably, the bottom of the upper car and the bottom of the lower car are respectively provided with a second locking device, the first locking device and the second locking device located on the same car are connected via a linkage shaft, the bottom of the upper safety clamp top rod is lower than the bottom of the upper car, and the top of the lower safety clamp top rod is higher than the top of the lower car. The first locking device and the second locking device are linked to each other, and can be locked at the same time, thereby improving the locking effect.

[0008] Preferably, the first locking device comprises a first safety clamp connected to the guide rail, the first safety clamp is connected to one end of the first safety clamp paddle, and the other end of the first safety clamp paddle is connected to one end of the linkage shaft, and the second locking device comprises a second safety clamp connected to the guide rail, the second safety clamp is connected to one end of the second safety clamp paddle, and the other end of the second safety clamp paddle is connected to the other end of the linkage shaft. The first safety clamp paddle and the second safety clamp paddle drive the first safety clamp and the second safety clamp in the first locking device and the second locking device to lock the guide rail.

[0009] Preferably, one end of the linkage shaft connected to the first safety gear paddle is connected to a gear through a bearing, and the gear is meshed with a rack. The bearing drives the rotation between the linkage shaft and the gear.

[0010] Preferably, the top of the upper safety clamp mandrel is connected to the rack of the first locking device at the bottom of the upper car, and the bottom of the lower safety clamp mandrel is connected to the rack of the first locking device at the bottom of the lower car. The rack converts the collision between the lower safety clamp mandrel and the upper safety clamp mandrel into the rotation of the gear.

[0011] Preferably, the linkage shaft is connected to a saw gear, the gear is provided with a plurality of ratchets, a torsion spring is provided in the ratchets, and the ratchets fit into the tooth grooves of the saw gear. The ratchets and the saw gear ensure that the gear rotates in one direction.

[0012] Preferably, the rack is connected to one end of a tension spring, and the other end of the tension spring is connected to the first safety clamp paddle. The tension spring prevents the rack from moving beyond a limited position.

[0013] Preferably, a collision plate is provided at the bottom of the upper safety clamp mandrel and the top of the lower safety clamp mandrel, respectively. The collision plate increases the collision surface and improves fault tolerance.

[0014] Preferably, the movement range of the upper safety clamp push rod and the lower safety clamp push rod is greater than the length of the rack.

[0015] The substantial effects of the utility model are as follows: the utility model can avoid car collision through a mechanical device when the upper and lower cars of a twin elevator run to the limit position and the electrical system fails, thus filling the gap of no mechanical anti-collision in twin elevators; the device has a simple structure and improves the anti-collision risk of the twin elevator without affecting the linkage between the original safety clamp and the speed limiter; the device can avoid damage to various components due to excessive impact force, and the device can automatically reset when the car runs in the opposite direction after acting like a safety clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an overall structural diagram of the first embodiment.

[0017] Figure 2 This is a structural diagram of the anti-collision device of Example 1.

[0018] Figure 3 This is a structural diagram of the first locking device of Example 1.

[0019] Figure 4 This is the internal connection diagram of the gear and the linkage shaft of Example 1.

[0020] Among them: 1. upper car, 2. lower car, 3. first locking device, 301. first safety clamp, 302. first safety clamp paddle, 303. gear, 304. rack, 305. saw gear, 306. pawl, 307. tension spring, 308. bearing, 4. second locking device, 401. second safety clamp, 402. second safety clamp paddle, 5. linkage shaft, 6. upper safety clamp top rod, 7. lower safety clamp top rod, 8. striker, 9. guide rail. DETAILED DESCRIPTION

[0021] The specific implementation of the utility model is further described below through specific embodiments and in conjunction with the accompanying drawings.

[0022] Embodiment one:

[0023] A twin elevator anti-collision device, such as Figure 1 and Figure 2 As shown, the anti-collision device is applied to a twin elevator. A twin elevator refers to two elevators running simultaneously in the same elevator shaft, one of which is an upper car 1 located at the upper end, and the other is a lower car 2 located below the upper car 1. The upper car 1 and the lower car 2 are exactly the same in shape and size. The anti-collision device as a whole is mainly composed of a first locking device 3, a second locking device 4, a lower safety clamp top rod 7 and an upper safety clamp top rod 6.

[0024] The bottom of the upper car 1 and the lower car 2 has a base protruding from both sides of the car. Two mutually parallel protrusions are arranged on both sides and the middle position of the upper surface of the upper car 1 and the lower car 2, and the vertical groove formed between the two protrusions is used to accommodate the operation of the guide rail 9. The first locking device 3 and the second locking device 4 are fixed to the side surfaces of the protruding base, and the first locking device 3 and the second locking device 4 are both in the same straight line of the vertical groove. The guide rail 9 in the vertical groove will pass through the first locking device 3 and the second locking device 4, and the guide rail 9 can be locked by the first locking device 3 and the second locking device 4, so as to realize the emergency stop of the upper car 1 or the lower car 2 and avoid the collision between the upper car 1 and the lower car 2. The first locking device 3 and the second locking device 4 are linked by a linkage shaft 5. The first locking device 3 and the second locking device 4 are triggered by the first safety clamp paddle 302 and the second safety clamp paddle 402 respectively, and the first safety clamp paddle 302 and the second safety clamp paddle 402 are fixedly connected by the linkage shaft 5. Therefore, the first locking device 3 and the second locking device 4 will perform locking or releasing operations synchronously. Since the first locking device 3 and the second locking device 4 are respectively located on both sides of the upper car 1 and the lower car 2, synchronous operation can prevent the upper car 1 and the lower car 2 from tilting when they are locked in an emergency.

[0025] An upper safety clamp top rod 6 is connected to the first locking device 3 fixed on the upper car 1, and a lower safety clamp top rod 7 is connected to the first locking device 3 fixed on the lower car 2. In addition, the bottom surface of the upper safety clamp top rod 6 exceeds the bottom surface of the upper car 1 by a certain distance, and the top of the lower safety clamp top plate exceeds the top of the lower car 2 by a certain distance, and the upper safety clamp top rod 6 and the lower safety clamp top rod 7 are still on the same vertical line. When the upper car 1 and the lower car 2 approach each other, the upper safety clamp top rod 6 and the lower safety clamp top rod 7 will gradually approach each other until the bottom of the upper safety clamp top rod 6 collides with the top of the lower safety clamp top rod 7. When the upper safety clamp top rod 6 collides with the lower safety clamp top rod 7, the upper safety clamp top rod 6 drives the first locking device 3 connected thereto to lock the guide rail 9, so that the upper car 1 stops moving, and the lower safety clamp top rod 7 drives the first locking device 3 connected thereto to lock the guide rail 9, so that the lower car 2 stops moving. Since the bottom surface of the upper safety clamp top rod 6 exceeds the bottom surface of the upper car 1 by a certain distance, and the top of the lower safety clamp top plate exceeds the top of the lower car 2 by a certain distance, there will be a certain distance between the upper car 1 and the lower car 2 when they stop, and no collision will occur. The bottom of the upper safety clamp top rod 6 and the top of the lower safety clamp top rod 7 are provided with a collision plate 8. The two collision plates 8 are of the same size, and the contact area between the two is increased, so that when the top rods of the upper and lower cars 2 collide with each other, there will be no risk of not colliding due to misalignment, and the vertical requirements for the upper and lower cars are reduced.

[0026] like Figure 3 and Figure 4 As shown, the first locking device 3 is mainly composed of a first safety clamp 301, a first safety clamp paddle 302, a gear 303, a rack 304 and other components. The rack 304 is fixed to the top of the upper safety clamp top rod or the bottom of the lower safety clamp top rod, and is in a position that can be engaged with the gear 303. The gear 303 is connected to the linkage shaft 5 through a bearing 308, the gear 303 is sleeved on the outer surface of the bearing 308, and the linkage shaft 5 is sleeved in the hole in the middle of the bearing 308. The linkage shaft 5 is connected to the first safety clamp paddle 302 through the hole of the first safety clamp paddle 302, and the other end of the first safety clamp paddle 302 is fixedly connected to the locking structure in the first safety clamp 301. When the upper safety clamp top plate collides with the lower safety clamp top plate, the rack 304 and the gear 303 move relative to each other, the rack 304 drives the gear 303 to rotate, the rotation of the gear 303 drives the linkage shaft 5 to rotate, and the rotation of the linkage shaft 5 drives the first safety clamp paddle 302 and the second safety clamp paddle 402 to rotate, thereby locking the first safety clamp 301 and the second safety clamp 401. When resetting in reverse motion, since the gear 303 and the linkage shaft 5 are connected by the bearing 308, the return of the rack 304 will not be hindered by the linkage shaft 5.

[0027] Embodiment 2:

[0028] The anti-collision device in this embodiment is applied to a twin elevator. A twin elevator refers to two elevators running simultaneously in the same elevator shaft, one of which is an upper car 1 located at the upper end, and the other is a lower car 2 located below the upper car 1. The upper car 1 and the lower car 2 are exactly the same in shape and size. The anti-collision device as a whole is mainly composed of a first locking device 3, a second locking device 4, a lower safety clamp top rod 7 and an upper safety clamp top rod 6.

[0029] The bottom of the upper car 1 and the lower car 2 has a base protruding from both sides of the car. Two mutually parallel protrusions are arranged on both sides and the middle position of the upper surface of the upper car 1 and the lower car 2, and the vertical groove formed between the two protrusions is used to accommodate the operation of the guide rail 9. The first locking device 3 and the second locking device 4 are fixed to the side surfaces of the protruding base, and the first locking device 3 and the second locking device 4 are both in the same straight line of the vertical groove. The guide rail 9 in the vertical groove will pass through the first locking device 3 and the second locking device 4, and the guide rail 9 can be locked by the first locking device 3 and the second locking device 4, so as to realize the emergency stop of the upper car 1 or the lower car 2 and avoid the collision between the upper car 1 and the lower car 2. The first locking device 3 and the second locking device 4 are linked by a linkage shaft 5. The first locking device 3 and the second locking device 4 are triggered by the first safety clamp paddle 302 and the second safety clamp paddle 402 respectively, and the first safety clamp paddle 302 and the second safety clamp paddle 402 are connected by the linkage shaft 5. Therefore, the first locking device 3 and the second locking device 4 will perform locking or releasing operations synchronously. Since the first locking device 3 and the second locking device 4 are respectively located on both sides of the upper car 1 and the lower car 2, synchronous operation can prevent the upper car 1 and the lower car 2 from tilting when they are locked in an emergency.

[0030] An upper safety clamp top rod 6 is connected to the first locking device 3 fixed on the upper car 1, and a lower safety clamp top rod 7 is connected to the first locking device 3 fixed on the lower car 2. In addition, the bottom surface of the upper safety clamp top rod 6 exceeds the bottom surface of the upper car 1 by a certain distance, and the top of the lower safety clamp top plate exceeds the top of the lower car 2 by a certain distance, and the upper safety clamp top rod 6 and the lower safety clamp top rod 7 are still on the same vertical line. When the upper car 1 and the lower car 2 approach each other, the upper safety clamp top rod 6 and the lower safety clamp top rod 7 will gradually approach each other until the bottom of the upper safety clamp top rod 6 collides with the top of the lower safety clamp top rod 7. When the upper safety clamp top rod 6 collides with the lower safety clamp top rod 7, the upper safety clamp top rod 6 drives the first locking device 3 connected thereto to lock the guide rail 9, so that the upper car 1 stops moving, and the lower safety clamp top rod 7 drives the first locking device 3 connected thereto to lock the guide rail 9, so that the lower car 2 stops moving. Since the bottom surface of the upper safety clamp top rod 6 exceeds the bottom surface of the upper car 1 by a certain distance, and the top of the lower safety clamp top plate exceeds the top of the lower car 2 by a certain distance, there will be a certain distance between the upper car 1 and the lower car 2 when stopping, and no collision will occur. A striker plate 8 is provided at the bottom of the upper safety clamp top rod 6 and the top of the lower safety clamp top rod 7. The two strikers 8 are of the same size, and the area of ​​the striker plate is larger than that of the upper safety clamp top rod and the lower safety clamp top rod, so as to facilitate the collision triggering of the upper safety clamp top rod and the lower safety clamp top rod, so that when the top rods of the upper and lower cars 2 collide with each other, there will be no risk of not being able to collide due to misalignment, and the requirements for the straightness of the upper and lower cars 2 are reduced.

[0031] like Figure 3 and Figure 4As shown, the first locking device 3 is mainly composed of a first safety clamp 301, a first safety clamp paddle 302, a gear 303 and a rack 304. The rack 304 is fixed to the top of the upper safety clamp top rod or the bottom of the lower safety clamp top rod, and is in a position that can mesh with the gear 303. The gear 303 is connected to the linkage shaft 5 through a bearing 308, the gear 303 is sleeved on the outer surface of the bearing 308, and the linkage shaft 5 is sleeved in the hole in the middle of the bearing 308. The linkage shaft 5 is connected to the first safety clamp paddle 302 through the hole of the first safety clamp paddle 302, and the other end of the first safety clamp paddle 302 is fixedly connected to the locking structure in the first safety clamp 301. A saw gear 305 is also sleeved on the linkage shaft 5, and the teeth of the saw gear 305 are uniformly inclined to one side. Three ratchets 306 are fixed on the side of the gear 303. The ratchets 306 are in the shape of magatama. Starting from the end connected to the gear 303, the width becomes narrower and narrower, and the narrowest end thereof fits the tooth groove surface of the saw gear 305. A torsion spring is provided at the connection between the ratchets 306 and the gear 303, so that the ratchets 306 always fit the tooth groove surface of the saw gear 305. Due to the structural design of the ratchets 306 and the saw gear 305, the gear 303 can only rotate in the same direction. When rotating in the opposite direction, the ratchets 306 and the saw gear 305 are stuck, so that the gear 303 stops rotating. A tension spring 307 is provided on the rack 304, one end of the tension spring 307 is connected to the end of the rack 304, and the other end of the tension spring 307 is connected to a hole on the first safety clamp paddle 302. When the upper safety clamp top rod 6 moves upward or the lower safety clamp top rod 7 moves downward, the tension spring 307 will gradually stretch until it reaches a limit of the tension spring 307, and the tension spring 307 will prevent the upper safety clamp top rod 6 and the lower safety clamp top rod 7 from continuing to move. The existence of the ratchet 306 and the saw gear 305 can prevent the reaction force of the tension spring 307 from rotating in the opposite direction, so that the locking structure is not locked, thereby causing the collision between the upper car and the lower car. Damage to various components due to excessive impact force is avoided. The length of the rack 304 is also smaller than the distance that the upper safety clamp top rod 6 and the lower safety clamp top rod 7 can move.

[0032] When the upper safety clamp top plate collides with the lower safety clamp top plate, the rack 304 and the gear 303 move relative to each other, and the rack 304 drives the gear 303 and the ratchet 306 to rotate. The rotation of the gear 303 drives the linkage shaft 5 and the saw gear 305 to rotate. The rotation of the linkage shaft 5 drives the first safety clamp paddle 302 and the second safety clamp paddle 402 to rotate, thereby locking the first safety clamp 301 and the second safety clamp 401. When the car or counterweight is lifted, the safety clamp is released and reset, and performs a reverse reset movement. After the safety clamp is restored, the tension spring 307 contracts and drives the rack 304 back to its original position. The rack 304 meshes with the gear 303, and the gear 303 is connected to the linkage shaft 5 through the bearing 308. The one-way transmission of the ratchet 306 and the gear 303 will not be stuck. When the rack 304 recovers after the action, it will not be blocked by other rotating shafts, so that the device can be restored to the state before the action.

[0033] The utility model can effectively avoid car collision through mechanical devices when the upper and lower cars of a twin elevator run to the limit position and the electrical system fails, thus filling the gap of no mechanical anti-collision for twin elevators; the device has a simple structure and improves the anti-collision risk of twin elevators without affecting the linkage between the original safety clamp and the speed limiter; the device can avoid damage to various components due to excessive impact force, and the device can automatically reset when the car runs in the opposite direction after acting like a safety clamp.

[0034] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A twin elevator anti-collision device, comprising an upper car and a lower car, characterized in that: The bottom of the upper car and the bottom of the lower car are respectively provided with a first locking device connected to the guide rail, the first locking device of the upper car is connected to the upper safety clamp top rod, and the first locking device of the lower car is connected to the lower safety clamp top rod, the upper safety clamp top rod and the lower safety clamp top rod are located in the same straight line and face oppositely, and when the upper safety clamp top rod collides with the lower safety clamp top rod, it drives the first locking device connected thereto to lock the guide rail.

2. A twin elevator anti-collision device according to claim 1, characterized in that: A second locking device is respectively provided at the bottom of the upper car and the bottom of the lower car. The first locking device and the second locking device located on the same car are connected by a linkage shaft. The bottom of the upper safety clamp top rod is lower than the bottom of the upper car, and the top of the lower safety clamp top rod is higher than the top of the lower car.

3. A twin elevator anti-collision device according to claim 2, characterized in that: The first locking device includes a first safety clamp connected to the guide rail, the first safety clamp is connected to one end of a first safety clamp paddle, and the other end of the first safety clamp paddle is connected to one end of the linkage shaft; the second locking device includes a second safety clamp connected to the guide rail, the second safety clamp is connected to one end of a second safety clamp paddle, and the other end of the second safety clamp paddle is connected to the other end of the linkage shaft.

4. A twin elevator anti-collision device according to claim 3, characterized in that: One end of the linkage shaft connected to the first safety clamp paddle is connected to a gear through a bearing, and the gear is meshed with a rack.

5. A twin elevator anti-collision device according to claim 4, characterized in that: The top of the upper safety clamp mandrel is connected to the rack of the first locking device at the bottom of the upper car, and the bottom of the lower safety clamp mandrel is connected to the rack of the first locking device at the bottom of the lower car.

6. A twin elevator anti-collision device according to claim 4, characterized in that: The linkage shaft is connected with a saw gear, the gear is provided with a plurality of ratchets, a torsion spring is arranged inside the ratchets, and the ratchets fit into the tooth grooves of the saw gear.

7. A twin elevator anti-collision device according to claim 4, 5 or 6, characterized in that: The rack is connected to one end of a tension spring, and the other end of the tension spring is connected to the first safety clamp paddle.

8. A twin elevator anti-collision device according to claim 1, 2 or 3, characterized in that: The bottom of the upper safety clamp push rod and the top of the lower safety clamp push rod are respectively provided with a strike plate.

9. A twin elevator anti-collision device according to claim 4, 5 or 6, characterized in that: The moving range of the upper safety clamp push rod and the lower safety clamp push rod is greater than the length of the rack.

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