Novel elevator with double counterweight housings

Abstract

The utility model relates to a novel elevator with double counterweight housings, which comprises an elevator car and a counterweight mechanism, the elevator car is connected with the counterweight mechanism through a steel wire rope and a double-wheel tractor, the counterweight mechanism comprises two counterweight units, the two counterweight units are connected through a pair of fixing plates, and the two counterweight units are connected through a pair of fixing plates. The steel wire rope is connected to the surface of the uppermost fixing plate. The double counterweight units are arranged in parallel, so that the occupied width of the counterweight units is reduced, the width of the lift car is increased, the split type balancing weights and the stand columns are installed in a combined mode through the notches, fast increase and decrease of balance weights are supported, and different load-carrying requirements are met. A vertical guide system formed by the guide rods and the sleeves restrains the counterweight housing from shaking, and synchronous movement of the double counterweight units is guaranteed. The threaded rod lifting mechanism supports overall height adjustment of the counterweight housing, and the counterweight block is convenient to overhaul or replace. And the limiting rod and the end cover are double-locked, so that the clump weight is prevented from falling off due to vibration, and the operation safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, specifically a novel double counterweight elevator. Background Technology

[0002] With the decline in elevator prices and the increase in people's requirements for quality of life, many self-built houses, demolished houses, or villa communities have begun to reserve shaft space for elevator installation. According to the current market, most home elevators are traction driven and have gantry frames. In this environment, even with the same shaft, the same counterweight side-mounted and equipped with a gantry frame, different manufacturers produce different car sizes. For customers, the greater the shaft utilization rate, the better, so that the usable space inside the car is more spacious.

[0003] The most common type of elevator on the market that allows for a relatively large car size is the traction double-wheel type main unit, which uses either steel wire rope or steel belt. Taking a shaft clear width of 1600mm as an example, this common solution can achieve a car clear width of 1200mm, which is the shaft clear width minus 400mm. However, some users who choose gantry traction elevators require a larger car size, which necessitates further reducing the shaft clear width. Utility Model Content

[0004] The purpose of this utility model is to provide a novel double counterweight elevator to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A novel double counterweight elevator includes a car and a counterweight mechanism. The car is connected to the counterweight mechanism via steel wire ropes and a double-wheel traction machine. The counterweight mechanism includes two counterweight units, which are connected by a pair of fixed plates. The steel wire ropes are connected to the surface of the uppermost fixed plate. Two rails are provided on one side of the car. A slider is fixedly installed on one side of each of the two counterweight units, and the two sliders are slidably connected to the two rails respectively.

[0007] The counterweight unit includes a counterweight frame and multiple counterweight structures. The multiple counterweight structures are detachably installed inside the counterweight frame. The two ends of the two fixing plates are respectively fixedly connected to the sides of the two counterweight frames. The slider is fixedly installed on the other side of the counterweight frame.

[0008] Preferably, the counterweight structure consists of two symmetrical counterweight blocks, each counterweight block having notches on both sides, the two notches forming a receiving groove, and the inner wall of the counterweight frame engaging with the inside of the receiving groove.

[0009] Preferably, the counterweight has an arc-shaped groove in the middle, the top of the counterweight frame is fixedly connected to a top plate by bolts, and a column is vertically fixedly connected between the counterweight frame and the top plate, the column being engaged inside the arc-shaped groove.

[0010] Preferably, the side of the column is horizontally and equidistantly fixedly connected with multiple limiting rods, the surface of the counterweight is provided with a through hole, one end of the through hole extends into the interior of the arc-shaped groove, and one end of the limiting rod passes through the through hole.

[0011] Preferably, one end of the limiting rod is threadedly connected to an end cap, and one side of the end cap abuts against the side of the counterweight.

[0012] Preferably, a support plate is vertically slidably connected to the bottom of the two counterweight frames via a guide structure, and a threaded rod is rotatably connected to the top of the support plate. One end of the threaded rod passes through and is threadedly connected to the surface of one of the fixed plates, and a handle is installed at the top of the threaded rod.

[0013] Preferably, the guide structure includes a sleeve and a guide rod. The sleeve is vertically fixed between two fixed plates, the bottom end of the guide rod is vertically fixed to the top surface of the support plate, and the top end of the guide rod passes through the lowest fixed plate and is slidably connected to the inside of the sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model features a parallel layout of dual counterweight units, reducing the width occupied by each unit and thus increasing the car width. The split counterweight blocks are installed via notches and columns, supporting rapid addition or removal of counterweights to adapt to different load requirements. A vertical guiding system composed of guide rods and sleeves suppresses counterweight frame swaying and ensures synchronous movement of the dual counterweight units. A threaded rod lifting mechanism supports overall counterweight frame height adjustment, facilitating maintenance or counterweight block replacement. Double locking with limit rods and end caps prevents counterweight blocks from dislodging due to vibration, enhancing operational safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the car of this utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of counterweight frame one and counterweight frame two of this utility model;

[0018] Figure 3 This is a top view of the structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 5This is a schematic diagram of the counterweight mechanism of this utility model;

[0021] Figure 6 This is a schematic diagram of the connection structure between the counterweight block and the counterweight frame of this utility model.

[0022] In the diagram: 1. Car; 2. Fixed plate; 3. Track; 4. Slider; 5. Counterweight frame; 6. Counterweight block; 7. Notch; 8. Arc-shaped groove; 9. Top plate; 10. Column; 11. Limiting rod; 12. Through hole; 13. End cover; 14. Support plate; 15. Threaded rod; 16. Handle; 17. Sleeve; 18. Counterweight frame one; 19. Counterweight frame two. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Please see Figures 1-3 This utility model provides a technical solution: a novel double counterweight elevator, including a car 1, a first counterweight 18 and a second counterweight 19, the first counterweight 18 and the second counterweight 19 being fixedly installed on one side of the car 1.

[0026] The steel wire ropes are distributed on both the front and rear sides of the guide rail of car 1. The steel wires on both sides are wound around counterweight frame 18 and counterweight frame 2 respectively, so that the net width inside the elevator car = net width of the elevator shaft - 300mm. Figure 3 For example, the hoistway width is 1600mm, the car width is 1300mm, and the hoistway utilization rate in the width direction is 80%.

[0027] It should be noted that the counterweight frame 18 and counterweight frame 29 in this embodiment have the same structure as the counterweight frame in the prior art, and their specific structural composition and working principle will not be described in detail here.

[0028] Example 2

[0029] Please see Figures 4-6This embodiment provides a counterweight mechanism to replace the counterweight frame 18 and counterweight frame 19 in embodiment 1. The car 1 is connected to the counterweight mechanism via a wire rope and a double-wheel traction machine. The counterweight mechanism includes two counterweight units, which are connected by a pair of fixed plates 2. The wire rope is connected to the surface of the uppermost fixed plate 2. Two rails 3 are provided on one side of the car 1. A slider 4 is fixedly installed on one side of each of the two counterweight units. The two sliders 4 are slidably connected to the two rails 3 respectively. The counterweight unit includes a counterweight frame 5 and multiple counterweight structures. The multiple counterweight structures are detachably installed inside the counterweight frame 5. The two ends of the two fixed plates 2 are fixedly connected to the sides of the two counterweight frames 5 respectively. The sliders 4 are fixedly installed on the other side of the counterweight frame 5.

[0030] Please see Figures 4-6 The elevator system includes a car 1 and a double counterweight mechanism. Two vertical rails 3 are welded to both sides of the car 11. They are made of H-beam steel and galvanized for rust prevention. The double counterweight mechanism consists of two counterweight units. Each counterweight unit includes a counterweight frame 5 and an internal counterweight block 6. The two counterweight frames 5 are rigidly connected by two sets of upper and lower fixing plates 2. The two ends of the fixing plates 2 are welded to the sides of the counterweight frames 5. The top fixing plate 2 is connected to a steel wire rope (not shown). The car 1 and the counterweight mechanism are linked by a double-wheel traction machine. A slider 4 is welded to the outside of the counterweight frame 5 to form a sliding pair with the rails 3. The slider 4 is made of a polymer material (such as polyurethane) and has a 0.5mm gap between it and the rails 3 to reduce frictional resistance. The parallel layout of the double counterweight units reduces the width occupied by the counterweight units, thereby increasing the width of the car 1. The slider 4 can be replaced with a rolling bearing type slider 4 with internal needle roller bearings to further reduce sliding resistance. The counterweight block 6 adopts a concrete-encased steel plate structure to reduce manufacturing costs.

[0031] The counterweight structure consists of two symmetrical counterweight blocks 6. Each counterweight block 6 has notches 7 on both sides, and the two notches 7 form a receiving groove. The inner wall of the counterweight frame 5 is engaged with the inside of the receiving groove. An arc-shaped groove 8 is provided in the middle part of the counterweight block 6. A top plate 9 is fixedly connected to the top of the counterweight frame 5 by bolts. A column 10 is vertically fixed between the counterweight frame 5 and the top plate 9. The column 10 is engaged with the inside of the arc-shaped groove 8. Multiple limiting rods 11 are horizontally and equidistantly fixedly connected to the side of the column 10. A through hole 12 is provided on the surface of the counterweight block 6. One end of the through hole 12 extends into the inside of the arc-shaped groove 8. One end of the limiting rod 11 passes through the through hole 12. One end of the limiting rod 11 is threadedly connected to an end cap 13. One side of the end cap 13 abuts against the side of the counterweight block 6.

[0032] Please see Figure 5 and Figure 6During installation, the arc-shaped groove 8 of the counterweight 6 is fitted into the column 10 and locked by the limiting rod 11. Multiple limiting rods 11 are horizontally welded to the side of the column 10. Through holes 12 are opened on the surface of the counterweight 6. The limiting rods 11 pass through the through holes 12 and are screwed into the end cap 13. The end cap 131 is pressed against the side of the counterweight 6. The gap between the diameter of the limiting rod 11 and the through hole 12 is ≤0.1mm. After the end cap 13 is tightened, a pre-tightening force is generated to prevent the counterweight 6 from moving longitudinally. Each layer of counterweight 6 corresponds to a set of limiting rods 11, forming a layered locking structure. A nylon locking ring is provided inside the end cap 13, which generates a self-locking effect after the thread is screwed in to prevent vibration from loosening.

[0033] Support plates 14 are vertically slidably connected to the bottom of the two counterweight frames 5 via a guide structure. A threaded rod 15 is rotatably connected to the top of the support plate 14. One end of the threaded rod 15 passes through and is threadedly connected to the surface of one of the fixed plates 2. A handle 16 is installed at the top of the threaded rod 15. The guide structure includes a sleeve 17 and a guide rod. The sleeve 17 is vertically fixed between the two fixed plates 2. The bottom end of the guide rod is vertically fixed to the top surface of the support plate 14. The top end of the guide rod passes through the lowest fixed plate 2 and is slidably connected to the inside of the sleeve 17.

[0034] Please see Figure 6 When the handle 16 is rotated, the threaded rod 15 drives the support plate 14 to rise and fall, thereby adjusting the overall height of the counterweight frame 5. The thread pitch of the threaded rod 15 is 5mm, and a single rotation can precisely adjust the height of the support plate 14 by 5mm to meet the needs of fine adjustment. The support plate 14 is made of Q345 steel plate with a thickness of ≥15mm. The bottom is welded with reinforcing ribs to distribute the load. The inner wall of the sleeve 17 is inlaid with a graphite lubricating bushing to reduce the sliding friction of the guide rod. The straightness error of the guide rod is ≤0.05mm / m, ensuring that the counterweight frame 5 rises and falls without jamming. At the same time, a servo motor can be installed at the top of the threaded rod 15. The controller links with the load sensor of the car 1 to realize the automatic adjustment of the counterweight height. A pressure sensor is embedded inside the limit rod 11 to monitor the locking status of the counterweight block 6 in real time.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel double counterweight elevator, comprising a car (1) and a counterweight mechanism, wherein the car (1) is connected to the counterweight mechanism via wire ropes and a double-wheel traction machine, characterized in that, The counterweight mechanism includes two counterweight units, which are connected by a pair of fixed plates (2). The wire rope is connected to the surface of the uppermost fixed plate (2). Two rails (3) are provided on one side of the car (1). A slider (4) is fixedly installed on one side of each of the two counterweight units. The two sliders (4) are slidably connected to the two rails (3). The counterweight unit includes a counterweight frame (5) and multiple counterweight structures. The multiple counterweight structures are detachably installed inside the counterweight frame (5). The two ends of the two fixing plates (2) are respectively fixedly connected to the sides of the two counterweight frames (5). The slider (4) is fixedly installed on the other side of the counterweight frame (5).

2. The novel double counterweight elevator according to claim 1, characterized in that: The counterweight structure consists of two symmetrical counterweight blocks (6), each of which has a notch (7) on both sides. The two notches (7) form a receiving groove, and the inner wall of the counterweight frame (5) is engaged with the inside of the receiving groove.

3. The novel double counterweight elevator according to claim 2, characterized in that: The counterweight (6) has an arc-shaped groove (8) in the middle. The top of the counterweight frame (5) is fixedly connected to a top plate (9) by bolts. A column (10) is vertically fixed between the counterweight frame (5) and the top plate (9). The column (10) is engaged inside the arc-shaped groove (8).

4. The novel double counterweight elevator according to claim 3, characterized in that: The side of the column (10) is fixedly connected with multiple limiting rods (11) horizontally and at equal intervals. The surface of the counterweight (6) is provided with a through hole (12). One end of the through hole (12) extends into the interior of the arc-shaped groove (8). One end of the limiting rod (11) passes through the through hole (12).

5. The novel double counterweight elevator according to claim 4, characterized in that: One end of the limiting rod (11) is threadedly connected to an end cap (13), and one side of the end cap (13) abuts against the side of the counterweight (6).

6. The novel double counterweight elevator according to claim 1, characterized in that: A support plate (14) is vertically slidably connected to the bottom of the two counterweight frames (5) via a guide structure. A threaded rod (15) is rotatably connected to the top of the support plate (14). One end of the threaded rod (15) passes through and is threaded to the surface of one of the fixed plates (2). A handle (16) is installed at the top of the threaded rod (15).

7. The novel double counterweight elevator according to claim 6, characterized in that: The guide structure includes a sleeve (17) and a guide rod. The sleeve (17) is vertically fixed between two fixed plates (2). The bottom end of the guide rod is vertically fixed to the top surface of the support plate (14). The top end of the guide rod passes through the lowest fixed plate (2) and is slidably connected to the inside of the sleeve (17).

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