An elevator shallow pit buffer system

Abstract

The application discloses an elevator shallow pit buffer system, which comprises a buffer one arranged in a pit and a buffer two arranged above a counterweight frame. When the buffer one is pressed by a car, the buffer two is pressed by the counterweight frame. The buffer one is arranged in the pit, and the buffer two is arranged above the counterweight frame, so that the counterweight frame and the car are simultaneously buffered, and the problem that the buffer cannot be satisfied when the depth of the pit is insufficient is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of elevator buffer, in particular to a shallow pit buffer system for elevator. BACKGROUND

[0002] A buffer, an important safety device, is installed in the pit of the elevator shaft, which functions to buffer when the elevator falls. There are spring buffers, hydraulic buffers, etc., and the purpose is to use the energy storage of the buffer to consume impact energy to protect the safety of passengers in the elevator.

[0003] The buffer has certain requirements for the depth of the pit. If the depth of the pit is not enough, the buffer distance is not enough, and the car still has a large impact. The usual way is to increase the depth of the pit. This approach has some potential hidden dangers:

[0004] Structural safety issues: After deepening the elevator shaft, the structure of the entire building will be affected. Therefore, a structural assessment is needed to ensure that the building can withstand additional weight and load.

[0005] Elevator safety issues: After deepening the elevator shaft, the safety of the elevator may be affected. For example, the guide rail of the elevator may need longer support, and if the support is insufficient, it may cause instability and operational failure of the elevator.

[0006] Construction period issues: Deepening the elevator shaft requires longer construction time because more work needs to be done, such as excavation and reinforcement. This may cause delays and cost increases in the entire project.

[0007] Environmental issues: Deepening the elevator shaft may affect the surrounding environment, such as groundwater level, soil stability, and the foundation of nearby buildings. An environmental assessment is needed, and appropriate measures should be taken to reduce the impact. SUMMARY

[0008] To overcome the shortcomings of the prior art, the present application provides a shallow pit buffer system for elevator, which combines buffer one in the pit and buffer two above the counterweight frame. When the car presses buffer one, the counterweight frame presses buffer two, reducing impact and ensuring the safety of passengers in the elevator.

[0009] A shallow pit buffer system for elevator, characterized in that it comprises a buffer one arranged in the pit and a buffer two arranged above the counterweight frame; the counterweight frame presses the buffer two upward when the car presses the buffer one downward.

[0010] Preferably, the buffer mounting rack further comprises a main beam, a mounting seat arranged on the main beam, and the buffer is arranged on the mounting seat.

[0011] Preferably, two rope limiting blocks are arranged above the rope passing hole, and the rope limiting blocks comprise a block body and a limiting gap arranged on the block body, and the limiting gaps of the two rope limiting blocks form a limiting hole.

[0012] Preferably, the rope limiting blocks are slidingly arranged on the main beam, and a fixed plate is further arranged on the main beam and located at the side of the rope limiting blocks, the fixed plate is provided with an elastic component connected with the rope limiting blocks, and a vertical insertion hole is further arranged on the rope limiting blocks, a lock rod is arranged in the vertical insertion hole, the lock rod comprises a lock portion matched with the vertical insertion hole, a trigger portion located at the side of the main beam and extending below the second buffer, and a connecting portion connecting the lock portion and the trigger portion, a trigger rod is fixedly connected to the counterweight frame and located directly below the lock rod, and the trigger rod is used for making the lock rod exit from the vertical insertion hole, and the difference between the distance d1 between the top of the counterweight frame and the second buffer and the distance d0 between the trigger rod and the lower end of the trigger portion is greater than the depth d2 of the lock portion inserted in the vertical insertion hole.

[0013] In summary, the present application has the following advantages:

[0014] 1: The present application combines the first buffer in the pit and the second buffer above the counterweight frame, and when the car presses the first buffer, the counterweight frame presses the second buffer, thereby reducing the impact and ensuring the safety of passengers in the elevator.

[0015] 2: The rope limiting blocks do not affect the service life of the steel wire rope during normal operation of the elevator, and only play a role in preventing the steel wire rope from jumping instantaneously when the car is buffered, thereby preventing the steel wire rope itself and various rope wheel components for suspending the steel wire rope from being abraded, and ensuring the service life of the elevator. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 Figure 1 is a schematic diagram of the installation of the buffer system in the shaft;

[0017] Fig. 2 Figure 4 is a schematic diagram of the installation of the second buffer on the buffer mounting rack;

[0018] Fig. 3 Figure 5 is a schematic diagram of the installation of the lock rod. DETAILED DESCRIPTION

[0019] The present application will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1: asFigs. 1-3 As shown in the drawings, an elevator shallow pit buffer system comprises a buffer one 1 arranged in the pit, a buffer two 2 arranged above the counterweight frame 01, the counterweight frame 01 presses the buffer two 2 upward when the car 03 presses the buffer one 1 downward, so that the kinetic energy transferred to the buffer one 1 is smaller, the buffer distance of the buffer one 1 does not need to be large, which is suitable for shallow pit and does not need to dig deep pit.

[0021] Further comprising a buffer mounting bracket 3 arranged on the counterweight guide rail 02, the buffer mounting bracket 3 is used for mounting the buffer two 2, the buffer mounting bracket 3 comprises a main beam 31 and a mounting seat 32 arranged on the main beam 31, the two sides of the main beam 31 are fixedly connected to the two counterweight guide rails 02 on the two sides of the counterweight frame 01, the buffer two 2 is mounted on the mounting seat 32, the number of the mounting seat 32 is two, and the number of the buffer two 2 is two, the two buffers two 2 are mounted on the two mounting seats 32, and the main beam 31 is provided with a wire hole 311 for the steel wire rope to pass through, the cross-sectional dimension of the wire hole 311 should be as large as possible to prevent the steel wire rope from being rubbed with the wire hole 311 to cause the service life of the steel wire rope to be shortened when the elevator is in normal motion.

[0022] Since the speed of the counterweight frame 01 will change instantaneously when the counterweight frame 01 presses the buffer two 2 instantaneously, the steel wire rope has the hidden danger of strong instantaneous jumping, which causes the steel wire rope itself and various rope wheel components for suspending the steel wire rope to have large wear, thereby causing the service life of the elevator to be reduced, therefore, the upper side of the wire hole 311 is provided with two rope limiting blocks 33, the rope limiting block 33 comprises a block body 331 and a limiting gap 332 arranged on the block body 331, the limiting gaps 332 on the two rope limiting blocks 33 form a limiting opening, the size of the limiting opening is smaller than the size of the wire hole 311, the steel wire rope is limited by the limiting opening to prevent the steel wire rope from jumping strongly instantaneously. A buffer pad is arranged in the limiting gap 332 to reduce the damage to the limiting opening, and the buffer pad is not shown.

[0023] When the elevator is in normal operation, the size of the limiting opening should be as large as possible to reduce the contact or friction with the steel wire rope. To this end, the rope limiting block 33 is slidingly arranged on the main beam 31, and a fixed plate 34 is arranged on the main beam 31 and located at the side of the rope limiting block 33. The fixed plate 34 is provided with an elastic component 35 connected with the rope limiting block 33. The elastic component 35 is a spring. The rope limiting block 33 is further provided with a vertical insertion hole 333, and a lock rod 36 is arranged in the vertical insertion hole 333. The lock rod 36 includes a lock portion 361 matched with the vertical insertion hole 333, a trigger portion 362 located at the side of the main beam 31 and extending below the buffer 2, and a connecting portion 363 connecting the lock portion 361 and the trigger portion 362. The counterweight frame 01 is fixedly connected with a trigger rod 37 located directly below the lock rod 36. The trigger rod 37 is used to make the lock rod 36 exit from the vertical insertion hole 333. The difference between the distance d1 between the top of the counterweight frame 01 and the buffer 2 and the distance d0 between the trigger rod 37 and the lower end of the trigger portion 362 is greater than the depth d2 of the lock portion 361 inserted into the vertical insertion hole 333. The distance relationship is set so that the top of the counterweight frame 01 does not contact the buffer 2 when the lock portion 361 exits from the vertical insertion hole 333, that is, the trigger rod 37 pushes the lock rod 36 out before the buffer 2 plays a buffering role, so that the limiting opening becomes smaller in advance.

[0024] When the elevator is in normal operation, the lock rod 36 is inserted into the vertical insertion hole 333, and the distance between the two rope limiting blocks 33 is relatively far. At this time, the existence of the two rope limiting blocks 33 reduces the contact or friction with the steel wire rope, and ensures the service life of the elevator steel wire rope and the elevator. When the car falls and the counterweight frame 01 approaches the buffer 2 upward, the trigger rod 37 pushes the lock rod 36 out in advance, so that the limiting opening becomes smaller, preventing the steel wire rope from jumping instantaneously and strongly when the counterweight frame 01 contacts the buffer.

[0025] In order to enable the trigger rod 37 on the counterweight frame 01 to reach the trigger portion 362, a mounting block 37-1 extending to the front side is arranged on the counterweight frame 01, and the trigger rod 37 is mounted on the mounting block 37-1. The trigger rod 37 is located at the front side of the main beam 31.

[0026] The lock rod 36 further includes a sliding portion 364 connected with the connecting portion 363 and located above the connecting portion 363. A fixed sliding sleeve 4 is sleeved on the sliding portion 364. The fixed sliding sleeve 4 plays a role of installing the sliding portion 364 and limiting the falling of the lock rod 36 after the lock rod 36 exits from the vertical insertion hole 333. The fixed sliding sleeve 4 can be fixedly installed on the shaft wall through a connecting frame.

[0027] The above embodiments are only used to describe the preferred embodiments of the present application, and are not used to limit the concept and scope of the present application. Various modifications and improvements to the technical solution of the present application made by those skilled in the art without departing from the design concept of the present application shall fall within the protection scope of the present application. The technical content of the present application claimed for protection has been entirely recorded in the claims.

Claims

1. An elevator shallow pit buffer system, characterized in that, The buffer one (1) is arranged in the pit, the buffer two (2) is arranged above the counterweight frame (01), the counterweight frame (01) is pressed upward when the buffer two (2) is pressed downward by the buffer one (1) of the car (03); The buffer mounting rack (3) for mounting the buffer two (2) is arranged on the counterweight guide rail (02), the buffer mounting rack (3) comprises a main beam (31) and a mounting seat (32) arranged on the main beam (31), and the buffer two is mounted on the mounting seat (32); the main beam (31) is provided with a wire hole (311) for the steel wire to pass through; The upper portion of the wire limiting block (33) is provided with two wire limiting blocks (33), the wire limiting block (33) comprises a block body (331) and a limiting gap (332) arranged on the block body (331), and the limiting gaps (332) on the two wire limiting blocks (33) form a limiting gap; The wire limiting block (33) is slidably arranged on the main beam (31), and the main beam (31) is further provided with a fixed plate (34) located on the side of the wire limiting block (33), the fixed plate (34) is provided with an elastic component (35) connected with the wire limiting block (33), and the wire limiting block (33) is further provided with a vertical insertion hole (333), the vertical insertion hole (333) is provided with a lock rod (36), the lock rod (36) comprises a lock portion (361) matched with the vertical insertion hole (333), a trigger portion (362) located on the side of the main beam (31) and extending below the buffer two (2), and a connecting portion (363) connecting the lock portion (361) and the trigger portion (362), the counterweight frame (01) is fixedly connected with a trigger rod (37) located directly below the lock rod (36) and used for making the lock rod (36) exit from the vertical insertion hole (333), and the difference between the distance d1 between the top of the counterweight frame (01) and the buffer two (2) and the distance d0 between the trigger rod (37) and the lower end of the trigger portion (362) is greater than the depth d2 of the lock portion (361) inserted into the vertical insertion hole (333).

2. An elevator shallow pit buffer system according to claim 1, characterized in that, The trigger rod (37) is located on the front side of the main beam (31).

3. The shallow pit elevator buffer system of claim 1, wherein, The lock rod (36) further comprises a sliding portion (364) connected with the connecting portion (363) and located above the connecting portion (363), and a fixed sliding sleeve (4) fixedly arranged in the shaft is sleeved on the sliding portion (364).

4. The shallow pit elevator buffer system of claim 1, wherein, The elastic component (35) comprises a spring.

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