Elevator counterweight housing

Abstract

The utility model discloses an elevator counterweight housing which comprises a frame composed of an upper beam (1), a lower beam (2) and two side beams (3), notches (4) are formed in the front sides of the side beams (3), the notches (4) are close to the upper ends of the side beams (3), a plurality of counterweight blocks (5) stacked together are arranged between the two side beams (3), a rotating shaft (6) is arranged between the two side beams (3), a driving mechanism is arranged on the rotating shaft (6), and the rotating shaft (6) is located on the upper side of the notches (4). At least two rope wheels (7) are arranged on the rotating shaft (6), ropes (8) are wound on the rope wheels (7), and lock hooks (9) are arranged at the ends of the ropes (8); through grooves (10) with the number corresponding to that of the rope wheels (7) are formed in the bottom of the counterweight block (5). The utility model has the advantages of easy assembly and good safety.

Description

Technical Field

[0001] The utility model relates to a counterweight frame of an elevator. Background Art

[0002] The counterweight frame is an important part of an elevator, which is used to balance the load of the car, reduce the energy consumption of the traction machine, and keep the elevator running stably.

[0003] The structure of the existing counterweight frame includes a rectangular frame. Inside the frame, there are multiple long-strip-shaped and horizontally arranged counterweight blocks, and the multiple counterweight blocks constitute the main weight of the counterweight frame.

[0004] In the existing counterweight frame, the frame includes an upper beam, a lower beam and two side beams. The side beams are channel steels. In order to limit the counterweight blocks, the notch of the side beam faces inwards, and the end of the counterweight block is inserted into the notch of the side beam. For the counterweight blocks at the lower part of the counterweight frame, the counterweight blocks can be placed into the frame after being tilted. However, for the counterweight blocks at the upper part of the counterweight frame, since the counterweight blocks will interfere with the upper beam after being tilted, resulting in the counterweight blocks being unable to be placed into the frame, it is necessary to open notches on the front sides of the two side beams. The notches are close to the upper ends of the side beams, and the counterweight blocks can enter the frame horizontally through the notches.

[0005] The overall weight of the counterweight frame is very large, and it is generally assembled on site. Moreover, the weight of a single counterweight block is also very large. Especially for the counterweight blocks on large freight elevators, the weight of a single block can reach 100 kilograms, which makes it very difficult to place the counterweight blocks into the frame. Especially for the counterweight blocks at the upper part of the counterweight frame, it is even more difficult for workers to lift them to a greater height, and there are great safety hazards. Once the operation is careless and the counterweight block drops, the dropped counterweight block is likely to injure the workers.

[0006] Therefore, the existing counterweight frame has the defects of difficult assembly and low safety. Content of the Utility Model

[0007] The purpose of the utility model is to provide a counterweight frame of an elevator. The utility model has the advantages of relatively easy assembly and good safety.

[0008] The technical solution of the utility model: A counterweight frame of an elevator, which includes a frame composed of an upper beam, a lower beam and two side beams. There are notches on the front sides of the side beams, and the notches are close to the upper ends of the side beams. There are multiple counterweight blocks stacked together between the two side beams. A rotating shaft is arranged between the two side beams, and a driving mechanism is arranged on the rotating shaft. The rotating shaft is located above the notch, and at least two rope wheels are arranged on the rotating shaft. Ropes are wound around the rope wheels, and hooks are arranged at the ends of the ropes.

[0009] In the aforementioned counterweight frame of the elevator, through grooves corresponding to the number of rope wheels are arranged at the bottoms of the counterweight blocks.

[0010] In the aforementioned elevator counterweight frame, the driving mechanism includes a driven bevel gear connected to a rotating shaft. An active bevel gear is provided above the driven bevel gear. A speed reducer is provided on the upper beam. The output end of the speed reducer is vertically downward and connected to the active bevel gear, and the input end of the speed reducer is horizontally outward.

[0011] In the aforementioned elevator counterweight frame, a hand pulley is provided at the input end of the speed reducer, and a cable is wound around the hand pulley.

[0012] In the aforementioned elevator counterweight frame, both ends of the rotating shaft are connected to the corresponding side beams through pedestal bearings.

[0013] Compared with the prior art, on the basis of the existing counterweight mechanism, the present utility model adds a mechanism for pulling the counterweight block to lift on the top of the counterweight frame. When a worker pulls the cable, the counterweight block can be lifted, causing the counterweight block to rise along the side beam and automatically enter the inside of the side beam through the notch, and then descend to complete the assembly of the counterweight block. Since the worker can be at a certain distance from the counterweight block when pulling the cable, even if the counterweight block accidentally falls, it will not hit the worker, thus improving safety. By setting the speed reducer, the force required for the worker to pull the cable is reduced, making it easier to place the counterweight block into the frame, and thus the assembly of the counterweight frame is relatively easy. In summary, the present utility model has the advantages of relatively easy assembly and good safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front view schematic diagram of the present utility model.

[0015] Figure 2 is a connection schematic diagram of the rotating shaft and the side beam.

[0016] Figure 3 is a left view schematic diagram of the upper beam.

[0017] Figure 4 is a horizontal cross-sectional schematic diagram of the side beam at the notch.

[0018] Figure 5 is a schematic diagram when the counterweight block is lifted.

[0019] The reference signs in the drawings are: 1 - upper beam, 2 - lower beam, 3 - side beam, 4 - notch, 5 - counterweight block, 6 - rotating shaft, 7 - rope pulley, 8 - rope, 9 - locking hook, 10 - through slot, 11 - driven bevel gear, 12 - active bevel gear, 13 - speed reducer, 14 - hand pulley, 15 - cable, 16 - pedestal bearing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present utility model will be further described below in conjunction with the drawings and embodiments, but it shall not be used as a basis for limiting the present utility model.

[0021] Embodiment. An elevator counterweight frame, asFigure 1 As shown in the figure, it includes a frame composed of an upper beam 1, a lower beam 2 and two side beams 3. A notch 4 is provided on the front side of the side beam 3. The two notches 4 are at the same height and are close to the upper end of the side beam 3. A plurality of counterweight blocks 5 stacked together are arranged between the two side beams 3. The features are as follows:

[0022] The upper beam 1, the lower beam 2 and the side beam 3 are all channel steels, and the frame is obtained by welding. In the frame, the opening of the upper beam 1 faces upward, the opening of the lower beam 2 faces downward, and the opening of the side beam 3 faces inward. The end of the counterweight block 5 is inserted into the opening groove of the side beam 3 so that the counterweight block 5 will not move horizontally and fall out.

[0023] A rotating shaft 6 is arranged between the two side beams 3. A driving mechanism is provided on the rotating shaft 6. The rotating shaft 6 is located above the notch 4. Two rope pulleys 7 are provided on the rotating shaft 6. A rope 8 is wound around the rope pulley 7. A locking hook 9 is provided at the end of the rope 8.

[0024] Two through grooves 10 are provided at the bottom of the counterweight block 5. The two through grooves 10 are respectively located below the two rope pulleys 7. The through grooves 10 facilitate the rope 8 to pass through the bottom of the counterweight block 5.

[0025] The driving mechanism includes a passive bevel gear 11 connected to the rotating shaft 6. An active bevel gear 12 is provided above the passive bevel gear 11. A speed reducer 13 is arranged in the opening groove of the upper beam 1. The reduction ratio of the speed reducer 13 is 4:1. The output end of the speed reducer 13 is vertically downward and connected to the active bevel gear 12. The input end of the speed reducer 13 is horizontally outward and is provided with a hand pulley 14. A cable 15 is wound around the hand pulley 14.

[0026] Both ends of the rotating shaft 6 are connected to the inner bottom surface of the corresponding side beam 3 through pedestal bearings 16.

[0027] Assembly method: The upper beam 1, the lower beam 2 and the side beam 3 are prefabricated into a frame in the factory and assembled into the elevator in a conventional manner at the construction site. Through the elevator control system, the frame is located at the low position of the hoistway, and the bottom of the frame forms a support. Then the counterweight block 5 is assembled into the frame, specifically as follows:

[0028] Pass the two ropes 8 through the corresponding through grooves 10, and then hang the locking hook on the rope 8 so that the lower end of the rope 8 forms a loop, as Figure 5As shown in the figure. Pull the cable 15, the cable 15 causes the handwheel 14 to rotate. The handwheel 14 drives the driving bevel gear 12 to rotate through the speed reducer 13, and amplifies the rotational torque. The driving bevel gear 12 drives the rotating shaft 6 to rotate through the driven bevel gear 11. The rope pulley 7 winds the rope 8, causing the counterweight 5 to rise along the front side wall of the side beam 3. When the height rises to the notch 4, the end of the counterweight 5 is no longer supported by the side beam 3. Under the action of gravity, it enters the side beam 3 through the notch 4. Then slowly release the cable 15, causing the counterweight 5 to descend to the limit position. Then uncover the rope 8 and perform the assembly of the next counterweight 5. When the worker operates the cable 15, he should stay outside the falling range of the counterweight 5 to avoid work-related injuries.

[0029] After completing the assembly of all the counterweights 5, the topmost counterweight 5 should also be fixed to restrict its upward movement. There are many ways to do this. For example, a stop block for limiting is screwed to the side beam 3, and the bottom surface of the stop block fits against the top of the topmost counterweight 5.

[0030] Finally, the rope 8 and the cable 15 should also be fixed. After winding all the rope 8 onto the rope pulley 7, wind the rope pulley 7 several times with high-pressure self-adhesive tape to prevent the rope 8 from loosening. After winding all the cable 15 onto the handwheel 14, wind the handwheel 14 several times with high-pressure self-adhesive tape to prevent the cable 15 from loosening.

[0031] The utility model is particularly suitable for use in large freight elevators with counterweights 5 made of concrete and weighing more than 50 Kg each. In such elevators, due to the material of the counterweights, they are prone to powdering and aging, and there is a need for replacement. It is convenient for subsequent replacement of the counterweights. It can be said that the utility model is specifically designed for such elevators. In the past, replacing the counterweights of such elevators required multiple people to work together. Now, it can be done by a single person.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

Claims

1. An elevator counterweight frame, comprising a frame consisting of an upper beam (1), a lower beam (2) and two side beams (3), a notch (4) being provided on the front side of the side beam (3), the notch (4) being close to the upper end of the side beam (3), a plurality of counterweight blocks (5) stacked together being provided between the two side beams (3), characterized in that: A rotating shaft (6) is provided between the two side beams (3), a driving mechanism is provided on the rotating shaft (6), the rotating shaft (6) is located on the upper side of the slot (4), at least two rope wheels (7) are provided on the rotating shaft (6), a rope (8) is wound on the rope wheel (7), and a locking hook (9) is provided at the end of the rope (8).

2. The elevator counterweight frame according to claim 1, characterized in that: The bottom of the counterweight block (5) is provided with through grooves (10) corresponding in number to the number of the rope wheels (7).

3. The elevator counterweight frame according to claim 1, characterized in that: The driving mechanism comprises a passive bevel gear (11) connected to the rotating shaft (6), a driving bevel gear (12) is arranged on the upper side of the passive bevel gear (11), a reducer (13) is arranged on the upper beam (1), an output end of the reducer (13) is vertically downward and connected to the driving bevel gear (12), and an input end of the reducer (13) is horizontally outward.

4. The elevator counterweight frame according to claim 3, characterized in that: The input end of the speed reducer (13) is provided with a hand pull wheel (14), and a cable (15) is wound around the hand pull wheel (14).

5. The elevator counterweight frame according to claim 1, characterized in that: Both ends of the rotating shaft (6) are connected to corresponding side beams (3) via seat bearings (16).

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