Car roof double diversion sheave structure

Abstract

The utility model discloses a car roof double diversion sheave structure which comprises two upper beams (1) arranged side by side, two diversion sheaves (2) arranged between the two upper beams (1), rotating shafts (3) arranged on the diversion sheaves (2) in the axial direction, wheel beams (4) arranged above the upper beams (1), step grooves (5) formed in the ends of the rotating shafts (3), the bottom faces of the step grooves (5) are attached to the bottom faces of the wheel beams (4), and U-shaped double-thread screws (6) are arranged on the outer sides of the ends of the rotating shafts (3). The two ends of the double-thread screw (6) extend into the wheel beam (4) and are provided with first nuts (7), and the wheel beam (4) is connected with the upper beam (1) through a damping buffering assembly (8). The wheel beam (4) and the upper beam (1) are both of a U-shaped structure, an opening of the wheel beam (4) and an opening of the upper beam (1) are both horizontally outward, and two side plates of the wheel beam (4) and two side plates of the upper beam (1) are both bent inwards. The traction machine has the advantage that the failure rate of the traction machine can be reduced.

Description

Technical Field

[0001] This utility model belongs to the field of elevator cars, and particularly relates to a double anti-reverse rope pulley structure on the car top. Background Technology

[0002] Elevator cars are typically equipped with a deflector pulley at the bottom. The deflector pulley is connected to the traction machine via a traction rope. The traction machine drives the traction rope to move, which in turn causes the deflector pulley to rise and fall, resulting in the car rising and falling accordingly.

[0003] Most elevator cars have a single anti-reverse sheave at the top, while some elevators have two anti-reverse sheaves, i.e., a double anti-reverse sheave structure, to improve the stability of the car during ascent and descent. The traction rope passes around the bottom of the two anti-reverse sheaves, and the traction ropes on both sides of the double anti-reverse sheave structure go vertically upward and pass around the fixed pulley at the top of the shaft.

[0004] Existing double anti-cord sheave structures, such as the wheel beam of the double anti-cord sheave for a villa ladder in application number 202322164357.0, include two steel beams located at the top of the car. Both steel beams are formed by bending sheet metal. Two anti-cord sheaves are set between the two steel beams. A rotating shaft is provided on the axial direction of the anti-cord sheaves. The anti-cord sheaves can rotate on the rotating shaft. The end of the rotating shaft passes through the steel beam and is fixed to the steel beam.

[0005] The existing double anti-reverse sheave structure has the following drawback: the vibration generated by the car during the lifting process is rigidly transmitted to the anti-reverse sheave, and the vibration of the anti-reverse sheave is then transmitted to the traction machine through the traction rope, resulting in a high failure rate of the traction machine. Utility Model Content

[0006] The purpose of this invention is to provide a double anti-reverse rope pulley structure for car tops. This invention has the advantage of reducing the failure rate of traction machines.

[0007] The technical solution of this utility model is as follows: A car roof double anti-cord pulley structure includes two upper beams arranged side by side, two anti-cord pulleys are provided between the two upper beams, a rotating shaft is provided axially on the anti-cord pulleys, a wheel beam is provided above the upper beams, a stepped groove is provided at the end of the rotating shaft, the bottom surface of the stepped groove is in contact with the bottom surface of the wheel beam, a U-shaped double-headed screw is provided on the outer side of the end of the rotating shaft, both ends of the double-headed screw extend into the wheel beam and are provided with a first nut, and the wheel beam is connected to the upper beam through at least two damping buffer components.

[0008] In the aforementioned double anti-reverse rope wheel structure on the car roof, both the wheel beam and the upper beam are U-shaped structures. The openings of the wheel beam and the upper beam are both horizontally outward, and the two side plates of the wheel beam and the two side plates of the upper beam are both bent inward.

[0009] In the aforementioned double anti-reverse rope pulley structure on the car top, the damping buffer assembly includes a base plate located inside the upper beam and a bolt located inside the wheel beam. A rubber block is provided on the top of the base plate, and the bolt passes through the side plate at the bottom of the wheel beam, the side plate at the top of the upper beam, the rubber block and the base plate in sequence, and is provided with a second nut.

[0010] In the aforementioned double anti-reverse rope pulley structure on the car roof, a pressure sensor connected to the base plate is provided on one side of the rubber block.

[0011] In the aforementioned double anti-reverse rope pulley structure on the car top, both the threaded end of the bolt and both ends of the double-ended screw are provided with anti-loosening pins.

[0012] In the aforementioned double anti-reverse rope pulley structure on the car roof, vertical reinforcing ribs are provided inside both the wheel beam and the upper beam, and the reinforcing ribs connect the two side plates of the wheel beam or the two side plates of the upper beam.

[0013] In the aforementioned double anti-reverse rope pulley structure on the car roof, at least two U-shaped reinforcing plates are provided between the two wheel beams, and the reinforcing plates are connected to the wheel beams with screws.

[0014] In the aforementioned double anti-reverse rope pulley structure on the car roof, the outer side of the anti-reverse rope pulley is provided with a first limiting rod with an adjustable horizontal position, and the two ends of the first limiting rod are respectively connected to two wheel beams.

[0015] In the aforementioned double anti-reverse rope pulley structure on the car roof, the bottom of the anti-reverse rope pulley is provided with a height-adjustable second limiting rod, and the two ends of the second limiting rod are respectively connected to two upper beams.

[0016] In the aforementioned double anti-cord sheave structure on the car roof, at least two transition plates are provided between the two upper beams, and a cover plate located above the anti-cord sheave is provided between the two wheel beams.

[0017] Compared with existing technologies, this invention replaces the steel beam in the existing double anti-reverse rope sheave structure with a wheel beam and a top beam. The anti-reverse rope sheave is connected to the wheel beam via a rotating shaft, and the top beam is connected to the car. A damping buffer assembly is installed between the wheel beam and the top beam. Vibrations generated during the car's lifting and lowering process are transmitted to the top beam, where they are damped by the damping buffer assembly, and then transmitted to the anti-reverse rope sheave via the wheel beam. This reduces the vibration impact on the anti-reverse rope sheave and the vibration force transmitted to the traction machine, thus reducing the failure rate of the traction machine. Therefore, this invention has the advantage of reducing the failure rate of the traction machine.

[0018] In addition, a pressure sensor is installed on the damping buffer assembly. When the rubber block on the damping buffer ages, the pressure sensor can generate a signal, and the elevator control system can issue a fault warning in a timely manner based on the signal, thereby improving elevator safety. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of this utility model after the cover plate is removed.

[0021] Figure 3 This is a schematic diagram of the damping buffer assembly.

[0022] Figure 4 This is a schematic diagram of the anti-reverse rope reel.

[0023] The markings in the attached diagram are as follows: 1-Upper beam, 2-Reverse rope wheel, 3-Spindle, 4-Wheel beam, 5-Step groove, 6-Double-ended screw, 7-First nut, 8-Damping buffer assembly, 9-Base plate, 10-Bolt, 11-Rubber block, 12-Second nut, 13-Pressure sensor, 14-Anti-detachment pin, 15-Reinforcing rib, 16-Reinforcing plate, 17-First limiting rod, 18-Second limiting rod, 19-Adapter plate, 20-Cover plate, 21-First elongated hole, 22-Third nut, 23-Second elongated hole, 24-Fourth nut. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0025] Example. A double-reverse rope pulley structure for car roof, such as... Figure 1 As shown, the system includes two parallel upper beams 1, with two sheave pulleys 2 positioned between them. Each sheave pulley 2 has an upward-sloping shaft 3, and the sheave pulleys 2 are connected to the shaft 3 via bearings. When assembled onto the elevator, the ends of the upper beams 1 connect to the car frame, more specifically, to the straight beams connecting the car frame. The two upper beams 1 are respectively connected to the two sides of the straight beam with screws, and the traction rope passes around the bottom of the two sheave pulleys 2.

[0026] A wheel beam 4 is installed above the upper beam 1. Both the wheel beam 4 and the upper beam 1 are U-shaped structures. The openings of the wheel beam 4 and the upper beam 1 are horizontally outward. The two side plates of the wheel beam 4 and the two side plates of the upper beam 1 are bent inward, which gives the wheel beam 4 and the upper beam 1 high bending resistance, increases structural strength, and improves safety.

[0027] The end of the rotating shaft 3 is provided with a stepped groove 5, the bottom surface of which is in contact with the bottom surface of the wheel beam 4. A U-shaped double-ended screw 6 is provided on the outer side of the end of the rotating shaft 3. Both ends of the double-ended screw 6 pass through the side plate at the bottom of the wheel beam 4 and are provided with two first nuts 7. After the two first nuts 7 are tightened, the rotating shaft 3 is pulled and fixed to the wheel beam 4 by the double-ended screw 6. The horizontal displacement of the rotating shaft 3 is restricted by the double-ended screw 6. Since the rotating shaft 3 is in contact with the plane of the wheel beam 4, the rotating shaft 3 cannot rotate freely, and the rotating shaft 3 is fixed.

[0028] The wheel beam 4 is connected to the upper beam 1 through two damping buffer assemblies 8. The damping buffer assembly 8 includes a base plate 9 located inside the upper beam 1 and two bolts 10 located inside the wheel beam 4. A rubber block 11 is provided on the top of the base plate 9. The bolts 10 pass through the side plate at the bottom of the wheel beam 4, the side plate at the top of the upper beam 1, the rubber block 11 and the base plate 9 in sequence and are provided with two second nuts 12.

[0029] A pressure sensor 13 is provided on one side of the rubber block 11 and connected to the base plate 9. The detection end of the pressure sensor 13 faces upward and is close to the bottom plate of the top side plate of the upper beam 1. When assembled on the elevator, the pressure sensor 13 is connected to the elevator's control system. As the elevator ages, the rubber block 11 may age and collapse, causing the detection end of the pressure sensor 13 to touch the top side plate of the upper beam 1. A signal is generated on the pressure sensor 13, and the control system issues a warning message.

[0030] The threaded end of the bolt 10 and both ends of the double-ended screw 6 are provided with anti-loosening pins 14. The anti-loosening pins 14 are used to prevent the nut from coming out and play a safety and security role.

[0031] Both the wheel beam 4 and the upper beam 1 are provided with vertical reinforcing ribs 15, which connect the two side plates of the wheel beam 4 or the two side plates of the upper beam 1. The reinforcing ribs 15 are used to increase the structural strength of the wheel beam 4 or the upper beam 1.

[0032] Two U-shaped reinforcing plates 16 are provided between the two wheel beams 4, and the reinforcing plates 16 are screwed to the wheel beams 4. The reinforcing plates 16 make the two wheel beams 4 form an integral structure and keep them parallel.

[0033] The outer side of the anti-cord pulley 2 is provided with a first limiting rod 17 with an adjustable horizontal position. The two ends of the first limiting rod 17 are respectively connected to two wheel beams 4. The first limiting rod 17 is used to prevent the traction rope from coming out of the rope groove of the anti-cord pulley 2. After the traction rope passes over the anti-cord pulley 2, the gap between the traction rope and the first limiting rod 17 is maintained at about 2mm. A first elongated hole 21 with a horizontal orientation is provided at the end of the wheel beam 4. The end of the first limiting rod 17 passes through the first elongated hole 21 and is provided with a third nut 22. The third nut 22 is provided on both the inner and outer sides of the vertical base plate of the wheel beam 4. When the third nut 22 is loosened, the horizontal position of the first limiting rod 17 is adjustable.

[0034] The bottom of the anti-cord pulley 2 is provided with a height-adjustable second limiting rod 18, and the two ends of the second limiting rod 18 are respectively connected to two upper beams 1. The second limiting rod 18 is used to prevent the traction rope from coming out of the rope groove of the anti-cord pulley 2. After the traction rope passes through the anti-cord pulley 2, the gap between the traction rope and the first limiting rod 17 is maintained at about 2mm. A vertical second elongated hole 23 is provided on the upper beam 1. The end of the second limiting rod 18 passes through the second elongated hole 23 and is provided with a fourth nut 24. When the fourth nut 24 is loosened, the height of the second limiting rod 18 is adjustable.

[0035] Two transition plates 19 are provided between the two upper beams 1, and the two transition plates 19 are located at the two ends of the two upper beams 1 respectively. A cover plate 20 is provided between the two wheel beams 4, located above the anti-rope wheel 2.

Claims

1. A double-reverse rope pulley structure for car roof, characterized in that: It includes two parallel upper beams (1), two anti-rope wheels (2) are provided between the two upper beams (1), the anti-rope wheels (2) are provided with a rotating shaft (3) axially upward, a wheel beam (4) is provided above the upper beams (1), a stepped groove (5) is provided at the end of the rotating shaft (3), the bottom surface of the stepped groove (5) is in contact with the bottom surface of the wheel beam (4), a U-shaped double-headed screw (6) is provided on the outer side of the end of the rotating shaft (3), both ends of the double-headed screw (6) extend into the wheel beam (4) and are provided with a first nut (7), and the wheel beam (4) is connected to the upper beams (1) through at least two damping buffer components (8).

2. The double anti-reverse rope pulley structure on the car roof according to claim 1, characterized in that: Both the wheel beam (4) and the upper beam (1) are U-shaped structures. The openings of the wheel beam (4) and the upper beam (1) are horizontally outward, and the two side plates of the wheel beam (4) and the two side plates of the upper beam (1) are bent inward.

3. The double anti-reverse rope pulley structure on the car roof according to claim 2, characterized in that: The damping buffer assembly (8) includes a base plate (9) located in the upper beam (1) and a bolt (10) located in the wheel beam (4). The top of the base plate (9) is provided with a rubber block (11). The bolt (10) passes through the side plate at the bottom of the wheel beam (4), the side plate at the top of the upper beam (1), the rubber block (11) and the base plate (9) in sequence and is provided with a second nut (12).

4. The double anti-reverse rope pulley structure on the car roof according to claim 3, characterized in that: A pressure sensor (13) is provided on one side of the rubber block (11) and connected to the base plate (9).

5. The double anti-reverse rope pulley structure on the car roof according to claim 3, characterized in that: The threaded end of the bolt (10) and both ends of the double-ended screw (6) are provided with anti-loosening pins (14).

6. The double anti-reverse rope pulley structure on the car roof according to claim 2, characterized in that: Vertical reinforcing ribs (15) are provided inside the wheel beam (4) and the upper beam (1). The reinforcing ribs (15) connect the two side plates of the wheel beam (4) or the two side plates of the upper beam (1).

7. The double anti-reverse rope pulley structure on the car roof according to claim 1, characterized in that: At least two U-shaped reinforcing plates (16) are provided between the two wheel beams (4), and the reinforcing plates (16) are screwed to the wheel beams (4).

8. The double anti-reverse rope pulley structure on the car roof according to claim 1, characterized in that: The outer side of the anti-rope wheel (2) is provided with a first limiting rod (17) with an adjustable horizontal position, and the two ends of the first limiting rod (17) are respectively connected to two wheel beams (4).

9. The double anti-reverse rope pulley structure on the car roof according to claim 1, characterized in that: The bottom of the anti-rope wheel (2) is provided with a height-adjustable second limiting rod (18), and the two ends of the second limiting rod (18) are respectively connected to two upper beams (1).

10. The double anti-reverse rope pulley structure on the car roof according to claim 1, characterized in that: At least two transition plates (19) are provided between the two upper beams (1), and a cover plate (20) is provided between the two wheel beams (4) above the anti-rope wheel (2).

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