Double-counterweight elevator

Abstract

The invention discloses a double-counterweight elevator which comprises a traction machine, a car, a car guide rail, a car guide shoe support, a first counterweight, a second counterweight, a first traction steel wire rope, a second traction steel wire rope, a counterweight guide steel wire rope, a car top beam, a reversing wheel, a reversing wheel transmission device and a traction steel wire rope fixing device. The traction machine drives the reversing wheel to rotate through the reversing wheel transmission device, so that the reversing wheel and a traction wheel on the traction machine have the same rotating speed and opposite rotating directions; one end of the first traction steel wire rope is connected with the first counterweight, and the other end of the first traction steel wire rope is connected with the car top beam through a traction steel wire rope fixing device; the second traction steel wire rope is hung on the reverse wheel, one end is connected with the second counterweight, and the other end is connected with the car top beam through the traction steel wire rope fixing device; the two ends of the counterweight guide steel wire rope are fixed to the top and the bottom of the shaft correspondingly, so that the counterweight guide steel wire rope vertically extends in the shaft. Counterweight guide rails are replaced by the guide steel wire ropes, the structure is simplified, and noise is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and particularly to a double counterweight elevator. Background Art

[0002] In the prior art, for the energy efficiency ratio of the traditional single counterweight elevator arrangement, a relatively large civil engineering space for the counterweight, counterweight guide rails, and counterweight guide rail brackets needs to be reserved. Therefore, this structural design makes the car space more cramped. Secondly, using the guide rails as the running track for the counterweight not only has a high cost, but also when configuring roller guide shoes, the low-frequency vibration noise caused by the rolling of the rollers on the guide rails not only affects the elevator riding experience, but also is transmitted to the households through the guide rail brackets, causing noise problems. Summary of the Invention

[0003] The technical problem to be solved by the present invention is how to provide a technical solution that can improve the utilization of the hoistway space and at the same time reduce the running noise.

[0004] To solve the above technical problem, a double counterweight elevator provided by the present invention includes a traction machine, a car, car guide rails, car guide shoe brackets, a first counterweight, a second counterweight, a first traction steel wire rope, a second traction steel wire rope, a counterweight guiding steel wire rope, a car top beam, a reversing wheel, a reversing wheel transmission device, and a traction steel wire rope fixing device;

[0005] The car guide shoe brackets are divided into two parts and are respectively fixed on the side of the car; guide shoes are provided on the car guide shoe brackets, and the up and down movement of the car is guided on the car guide rails through the guide shoes; the car top beam is fixed on the upper part of the car;

[0006] The traction machine drives the reversing wheel to rotate through the reversing wheel transmission device, so that the reversing wheel has the same rotational speed as the traction wheel on the traction machine and the opposite rotation direction;

[0007] The first traction steel wire rope is suspended on the traction wheel, one end is connected to the first counterweight, and the other end is connected to the car top beam through the traction steel wire rope fixing device;

[0008] The second traction steel wire rope is suspended on the reversing wheel, one end is connected to the second counterweight, and the other end is connected to the car top beam through the traction steel wire rope fixing device;

[0009] The counterweight guiding steel wire rope is at least two, and both ends of the counterweight guiding steel wire rope are respectively fixed at the top and bottom of the hoistway, so that the counterweight guiding steel wire rope extends vertically in the hoistway;

[0010] The first counterweight and the second counterweight are provided with counterweight through-hole conduits through which the counterweight guiding steel wire rope can pass, so that the counterweight guiding steel wire rope guides the upward movement of the first counterweight and the second counterweight.

[0011] Preferably, the car guide shoe bracket is a hollow structure, and the middle part allows the first counterweight and the second counterweight to pass through.

[0012] Preferably, the upper and lower parts of the first counterweight and the second counterweight are provided with counterweight guide blocks, and the heads of the counterweight guide blocks are wedge-shaped.

[0013] Preferably, the inner wall of the counterweight through conduit is a smooth surface.

[0014] Preferably, the counterweight guiding steel wire ropes are respectively fixed at the top and bottom of the hoistway through a tensioning mechanism.

[0015] The present invention also provides a double-counterweight elevator, which includes a traction machine, a car, car guide rails, a car guide shoe bracket, a first counterweight, a second counterweight, a traction steel wire rope, a counterweight guiding steel wire rope, a car top beam, a deflecting pulley, a deflecting pulley transmission device, and a car top pulley;

[0016] The car guide shoe bracket is divided into two parts and is respectively fixed on the side of the car; a guide shoe is arranged on the car guide shoe bracket, and the up and down movement of the car is guided on the car guide rails through the guide shoe; the car top beam is fixed on the upper part of the car, and the car top pulley is rotatably fixed on the car top beam;

[0017] The traction machine drives the deflecting pulley to rotate through the deflecting pulley transmission device, so that the deflecting pulley has the same rotational speed as the traction pulley on the traction machine and the opposite rotation direction;

[0018] One end of the traction steel wire rope is connected to the first counterweight, and the other end bypasses the traction pulley upward, then bypasses the car top pulley downward, bypasses the deflecting pulley upward, and is connected to the second counterweight downward;

[0019] There are at least two counterweight guiding steel wire ropes, and the two ends of the counterweight guiding steel wire ropes are respectively fixed at the top and bottom of the hoistway, so that the counterweight guiding steel wire ropes extend vertically in the hoistway;

[0020] The first counterweight and the second counterweight are provided with counterweight through conduits through which the counterweight guiding steel wire ropes can pass, so that the counterweight guiding steel wire ropes guide the upward movement of the first counterweight and the second counterweight.

[0021] Compared with the prior art, the double-counterweight elevator structure of the present invention expands the effective space of the car on the premise of ensuring the energy efficiency ratio. The design of using steel wire ropes instead of counterweight guide rails not only reduces the manufacturing cost, but also removes the rigid connection between the counterweight guide rail bracket and the building structure, reduces the vibration and noise transmission path, and reduces the vibration and noise of the counterweight operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following further describes the present invention in detail in conjunction with the drawings and specific embodiments:

[0023] Figure 1Schematic diagram of the double counterweight elevator structure of Embodiment 1;

[0024] Figure 2 Schematic diagram of the double counterweight elevator structure of Embodiment 2. Specific implementation manner

[0025] The following describes the implementation manners of the present invention through specific specific examples. Those skilled in the art can fully understand other advantages and technical effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific implementation manners. The details in this specification can also be applied based on different viewpoints and various modifications or changes can be made without departing from the general design concept of the invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. The following exemplary embodiments of the present invention can be implemented in many different forms and should not be construed as being limited only to the specific embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary specific embodiments to those skilled in the art.

[0026] Embodiment 1

[0027] As Figure 1 shown, this embodiment provides a double counterweight elevator, including a traction machine 1, a car 17, a car guide rail 12, a car guide shoe bracket 11, a first counterweight 10, a second counterweight 20, a first traction steel wire rope 5, a second traction steel wire rope 18, a counterweight guide steel wire rope 4, a car top beam 15, a reversing wheel 14, a reversing wheel transmission device 13, and a traction steel wire rope fixing device 16;

[0028] The car guide shoe bracket 11 is divided into two parts and is respectively fixed on the side of the car 17; a guide shoe 9 is arranged on the car guide shoe bracket 11, and the up and down movement of the car 17 is guided on the car guide rail 12 through the guide shoe 9; the car top beam 15 is fixed on the upper part of the car 17;

[0029] The traction machine 1 drives the reversing wheel 14 to rotate through a transmission gear 2 and a reversing wheel transmission device 13, so that the reversing wheel 14 has the same rotational speed as the traction wheel on the traction machine 1 and the opposite rotation direction;

[0030] The first traction steel wire rope 5 is suspended on the traction wheel, one end is connected to the first counterweight 10, and the other end is connected to the car top beam 15 through the traction steel wire rope fixing device 16;

[0031] The second traction steel wire rope 18 is suspended on the reversing wheel 14, one end is connected to the second counterweight 20, and the other end is connected to the car top beam 15 through the traction steel wire rope fixing device 16;

[0032] Before the first hoisting wire rope 5 is connected to the first counterweight 10, and before the second hoisting wire rope 18 is connected to the second counterweight 20, they can be guided by the guide pulley 3.

[0033] There are at least two counterweight guide wire ropes 4. Both ends of the counterweight guide wire rope 4 are tensioned and fixed at the top and bottom of the hoistway respectively, so that the counterweight guide wire rope 4 extends vertically in the hoistway; in this embodiment, there are four counterweight guide wire ropes 4, two at the first counterweight and two at the second counterweight. When installing, apply the same pre-tension to the four counterweight guide wire ropes to keep them taut and reduce the sway amplitude when the counterweight runs.

[0034] The first counterweight 10 and the second counterweight 20 are provided with counterweight through conduits 6 through which the counterweight guide wire rope 4 can pass, so that the counterweight guide wire rope 4 guides the upward movement of the first counterweight 10 and the second counterweight 20.

[0035] The car guide shoe bracket 11 is of a hollow structure, and the middle part can be passed through by the first counterweight 10 and the second counterweight 20. The inner wall of the counterweight through conduit 6 is a smooth surface. Avoid direct friction between the counterweight and the counterweight wire rope guide when the counterweight moves up and down, and ensure the smoothness of the counterweight operation. The upper and lower parts of the first counterweight 10 and the second counterweight 20 are provided with counterweight guide blocks 7. The head of the counterweight guide block 7 is wedge-shaped, effectively improving the error tolerance rate when the counterweight passes through and enhancing the safety of the wire rope guide 4 shaking caused by special circumstances.

[0036] The advantages of the double-counterweight elevator provided in this embodiment are as follows:

[0037] 1. Compared with the traditional elevator structure layout, the double-counterweight structure can be designed very thin, without the counterweight guide rail and its support structure. Under the same civil engineering space conditions, the car riding space is expanded.

[0038] 2. Using wire ropes instead of the counterweight guide rail structure not only saves civil engineering space, but also effectively avoids the low-frequency vibration noise caused by the contact between the counterweight rolling guide shoes and the guide rail. At the same time, removing the counterweight guide rail support reduces the path of structure-borne sound.

[0039] 3. Divide the original large counterweight of the same mass into two small counterweights, reducing the risk of large impulse of the large counterweight.

[0040] Embodiment 2

[0041] As Figure 2 shown, this embodiment provides a double-counterweight elevator, including a traction machine 31, a car 47, a car guide rail 42, a car guide shoe bracket 41, a first counterweight 40, a second counterweight 50, a hoisting wire rope 35, a counterweight guide wire rope 34, a car top beam 45, a reversing wheel 44, a reversing wheel transmission device 43 and a car top wheel 46;

[0042] The car guide shoe bracket 41 is divided into two parts and is respectively fixed on the side of the car 47; a guide shoe 39 is arranged on the car guide shoe bracket 41, and the up and down movement of the car 47 is guided on the car guide rail 42 through the guide shoe 39; the car top beam 45 is fixed on the upper part of the car 47, and the car top wheel 46 is rotatably fixed on the car top beam 45;

[0043] The traction machine 31 drives the reversing wheel 44 to rotate through the transmission gear 32 and the reversing wheel transmission device 43, so that the reversing wheel 44 has the same rotational speed as the traction wheel on the traction machine and the opposite rotation direction;

[0044] One end of the traction steel wire rope 35 is connected to the first counterweight 40, and after the other end bypasses the traction wheel upward, it bypasses the car top wheel 46 downward, bypasses the reversing wheel 44 upward, and is connected to the second counterweight 50 downward;

[0045] Before the traction steel wire rope 35 is connected to the first counterweight 40 and the second counterweight 50, it can be guided through the guide pulley 33.

[0046] There are at least two counterweight guide steel wire ropes 34. The two ends of the counterweight guide steel wire rope 34 are respectively fixed at the top and bottom of the hoistway, so that the counterweight guide steel wire rope 34 extends vertically in the hoistway; in this embodiment, there are four counterweight guide steel wire ropes 34, two at the first counterweight and two at the second counterweight. During installation, the same pre-tension is applied to the four counterweight guide steel wire ropes to keep them taut and reduce the swaying amplitude during the operation of the counterweight.

[0047] The first counterweight 40 and the second counterweight 50 are provided with counterweight through conduits 36 through which the counterweight guide steel wire rope 34 can pass, so that the counterweight guide steel wire rope 34 guides the upward movement of the first counterweight 40 and the second counterweight 50.

[0048] The car guide shoe bracket is of a hollow structure, and the middle part can be passed through by the first counterweight 40 and the second counterweight 50. The inner wall of the counterweight through conduit 36 is a smooth surface. It avoids the direct friction between the counterweight and the counterweight steel wire rope guide during the up and down movement of the counterweight and ensures the smoothness of the counterweight operation. The upper and lower parts of the first counterweight 40 and the second counterweight 50 are provided with counterweight guide blocks 7. The head of the counterweight guide block 37 is wedge-shaped, effectively improving the fault tolerance rate when the counterweight passes through and enhancing the safety of the swaying of the steel wire rope guide 34 caused by special circumstances.

[0049] The present invention has been described in detail through specific embodiments and examples, but these do not constitute a limitation to the present invention. Without departing from the principle of the present invention, those skilled in the art can also make many deformations and improvements, which should also be regarded as the protection scope of the present invention.

Claims

1. A double-duplex elevator, characterized in that, It includes a traction machine, a car, car guide rails, a car guide shoe bracket, a first counterweight, a second counterweight, a first traction steel wire rope, a second traction steel wire rope, a counterweight guiding steel wire rope, a car top beam, a reversing wheel, a reversing wheel transmission device, and a traction steel wire rope fixing device; The car guide shoe bracket is divided into two parts and is respectively fixed on the side of the car; a guide shoe is arranged on the car guide shoe bracket, and the up-and-down movement of the car is guided on the car guide rails through the guide shoe; the car top beam is fixed on the upper part of the car; The traction machine drives the reversing wheel to rotate through the reversing wheel transmission device, so that the reversing wheel has the same rotational speed as the traction wheel on the traction machine and the opposite rotation direction; The first traction steel wire rope is suspended on the traction wheel, one end is connected to the first counterweight, and the other end is connected to the car top beam through the traction steel wire rope fixing device; The second traction steel wire rope is suspended on the reversing wheel, one end is connected to the second counterweight, and the other end is connected to the car top beam through the traction steel wire rope fixing device; There are at least two counterweight guiding steel wire ropes, and both ends of the counterweight guiding steel wire ropes are respectively fixed at the top and bottom of the hoistway, so that the counterweight guiding steel wire ropes extend vertically in the hoistway; The first counterweight and the second counterweight are provided with counterweight through ducts through which the counterweight guiding steel wire ropes can pass, so that the counterweight guiding steel wire ropes guide the upward movement of the first counterweight and the second counterweight.

2. The double-duplex elevator according to claim 1, wherein The car guide shoe bracket is of a hollow structure, and the middle part can be passed through by the first counterweight and the second counterweight.

3. The double duplex elevator according to claim 2, characterized in that, The upper and lower parts of the first counterweight and the second counterweight are provided with counterweight guiding blocks, and the head of the counterweight guiding block is wedge-shaped.

4. The double duplex elevator according to claim 1, wherein, The inner wall of the counterweight through duct is a smooth surface.

5. The double-duplex elevator according to claim 1, wherein The counterweight guiding steel wire ropes are respectively fixed at the top and bottom of the hoistway through a tensioning mechanism.

6. A double-duplex elevator, characterized in that, It includes a traction machine, a car, car guide rails, a car guide shoe bracket, a first counterweight, a second counterweight, a traction steel wire rope, a counterweight guiding steel wire rope, a car top beam, a reversing wheel, a reversing wheel transmission device, and a car top wheel; The car guide shoe bracket is divided into two parts and is respectively fixed on the side of the car; a guide shoe is arranged on the car guide shoe bracket, and the up-and-down movement of the car is guided on the car guide rails through the guide shoe; the car top beam is fixed on the upper part of the car, and the car top wheel is rotatably fixed on the car top beam; The traction machine drives the reversing wheel to rotate through the reversing wheel transmission device, so that the reversing wheel has the same rotational speed as the traction wheel on the traction machine and the opposite rotation direction; One end of the traction steel wire rope is connected to the first counterweight, and the other end bypasses the traction wheel upward, then bypasses the car top wheel downward, bypasses the reversing wheel upward, and is connected to the second counterweight downward; There are at least two counterweight guiding steel wire ropes, and both ends of the counterweight guiding steel wire ropes are respectively fixed at the top and bottom of the hoistway, so that the counterweight guiding steel wire ropes extend vertically in the hoistway; The first counterweight and the second counterweight are provided with counterweight through ducts through which the counterweight guiding steel wire ropes can pass, so that the counterweight guiding steel wire ropes guide the upward movement of the first counterweight and the second counterweight.

7. The double duplex elevator according to claim 6, characterized in that, The car guide shoe bracket is of a hollow structure, and the middle part can be passed through by the first counterweight and the second counterweight.

8. The double-duplex elevator according to claim 7, characterized in that, The upper and lower parts of the first counterweight and the second counterweight are provided with counterweight guiding blocks, and the head of the counterweight guiding block is wedge-shaped.

9. The double duplex elevator according to claim 6, characterized in that, The inner wall of the counterweight through duct is a smooth surface.

10. The double-counterweight elevator according to claim 6, wherein The re-directing wire ropes are respectively fixed to the top and bottom of the hoistway through a tensioning mechanism.

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