Elevator structure with side machine room

Abstract

The elevator structure of the side machine room disclosed by the embodiment of the application comprises a shaft, a car, a steel wire rope, a counterweight, a side machine room, a guide device and a traction device, the car and the counterweight are arranged in the shaft, the side machine room is located at one side of the shaft and is in communication with each other, the traction device is arranged in the side machine room, the guide device is arranged at the top of the shaft and in the side machine room, one end of the steel wire rope is connected with the car, the other end of the steel wire rope enters the traction device under the guidance of the guide device and is finally connected with the counterweight. By using the embodiment of the application, the stairwell with lower use value at one side of the shaft can be used as the side machine room, the space at the top of the shaft is saved, and the elevator installation requirement of the building with lower floor height at the top of the shaft is met.

Description

TECHNICAL FIELD

[0001] The present application relates to an elevator structure, in particular to an elevator structure with a side machine room. BACKGROUND

[0002] In the design and production of elevators, the height of the building is often limited, resulting in a shorter hoistway and a smaller hoistway width and depth. The conventional solution to insufficient hoistway height is to use a structure without a machine room to solve the problem, that is, to place the machine room on one side of the hoistway, thereby reducing the height of the top floor. However, this change results in a narrow maintenance position for the machine room and occupies the planar space of the hoistway, making it difficult to maintain the main machine on a daily basis and reducing the utilization rate of the hoistway. When the hoistway width and depth are small, the conventional solution is to use a 1:1 traction method to solve the problem. This method can save the pulley set used to change the traction ratio, the counterweight can be made very small, and the car top space will also be very large. However, the disadvantage is that the top floor height requirement is very high, and unless it is considered at the beginning of the building design, the existing building often cannot meet the requirements. Therefore, there is an urgent need to propose an elevator installation structure that can meet the requirements of a small hoistway space and a low hoistway top floor height.

[0003] In addition, the existing elevator is usually provided with a counterweight to reduce the power of the traction device and save energy. However, the existing elevator car is directly connected with the counterweight through a steel wire rope without an additional energy conversion device. When the load of the car changes, the traction force needs to change accordingly, while the traction distance remains unchanged, resulting in a still high energy consumption of the traction device. SUMMARY

[0004] The present application provides a kind of elevator structure of side machine room to solve the defects of prior art, save the space of hoistway top, meet the elevator installation demand of the building with low hoistway top floor height.

[0005] To solve the above technical problems, the present application provides an elevator structure with a side machine room, which includes a hoistway, a car, a steel wire rope, a counterweight, a side machine room, a guide device, and a traction device. The car and the counterweight are located in the hoistway, the side machine room is located on one side of the hoistway and is in communication with each other, the traction device is located in the side machine room, the guide device is located at the top of the hoistway and in the side machine room, one end of the steel wire rope is connected to the car, and the other end enters the traction device under the guidance of the guide device and is finally connected to the counterweight.

[0006] As an improvement of the above-mentioned scheme, the side machine room is located on the side of the top floor of the hoistway or the side of the pit.

[0007] As an improvement of the above-mentioned scheme, the guide device includes a hoistway pulley and a side machine room pulley, the hoistway pulley is located at the upper part of the hoistway, and the side machine room pulley is located at the connection between the side machine room and the hoistway.

[0008] As the improvement of the above scheme, the side machine room is further provided with a steel wire rope winding and unwinding device, comprising a fixed cross beam, a movable cross beam, a return spring and a hydraulic cylinder; the fixed cross beam is fixedly arranged in the side machine room, and a first pulley block is arranged on the fixed cross beam; the movable cross beam is arranged in parallel with the fixed cross beam, and a second pulley block is arranged on the movable cross beam; the fixed cross beam and the movable cross beam are connected by the return spring; and the movable cross beam is further connected with a piston rod of the hydraulic cylinder.

[0009] As the improvement of the above scheme, the hydraulic cylinder is connected with a hydraulic oil tank through a hydraulic pipe, an electromagnetic valve and a speed regulating valve are arranged on the hydraulic pipe, the electromagnetic valve is used for controlling the on-off of the hydraulic pipe, and the speed regulating valve is used for ensuring that the flow rate of the hydraulic oil flowing through the hydraulic pipe is kept at a preset value.

[0010] As the improvement of the above scheme, the steel wire rope connected with the car passes through a shaft pulley and a side machine room pulley, and then passes through the first pulley block and the second pulley block in an up-down staggered manner, and then is connected with the counterweight after passing through a traction device.

[0011] As the improvement of the above scheme, the side machine room is arranged at the side of the pit of the shaft, one end of the steel wire rope is connected with the car, the other end of the steel wire rope passes through the shaft pulley and is connected with the counterweight, and then passes through the side machine room pulley and is connected with the traction device.

[0012] As the improvement of the above scheme, the bottom of the shaft is provided with a car anti-falling device and a counterweight anti-falling device.

[0013] The embodiment of the present application has the following beneficial effects:

[0014] By adopting the above structure, the stairwell with lower use value on one side of the shaft can be used as the side machine room, the space at the top of the shaft is saved, and the elevator installation requirement of the building with lower floor height at the top of the shaft is met. In addition, the above side machine room is not limited by the area of the shaft and has larger space, which is convenient for maintenance and accommodating more equipment.

[0015] Thanks to the design of the side machine room, the space of the machine room is expanded, the steel wire rope winding and unwinding device with larger volume can be accommodated in the machine room, the power consumption is reduced to a certain extent, and energy saving and environmental protection are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a first embodiment structure schematic view of an elevator structure of a side machine room of the present application;

[0017] Figure 2 is a top view of an elevator structure of a side machine room of the present application;

[0018] Figure 3is a second embodiment structure schematic diagram of the elevator structure of the side-placed machine room of the present application;

[0019] Figure 4 is a third embodiment structure schematic diagram of the elevator structure of the side-placed machine room of the present application;

[0020] Figure 5 is a structure schematic diagram of the steel wire rope winding and unwinding device of the present application. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings. It is hereby declared that the up, down, left, right, front, back, inner and outer directions appearing or about to appear in the present application in the text are based on the drawings of the present application only, and are not specific limitations on the present application.

[0022] As shown in Figure 1 and Figure 2 , the present application provides an elevator structure of a side-placed machine room, which comprises a shaft 1, a car 2, a steel wire rope 3, a counterweight 4, a side machine room 5, a guide device 6 and a traction device 7. The car 2 and the counterweight 4 are arranged in the shaft 1. The side machine room 5 is located at one side of the shaft 1 and is in communication with each other. The traction device 7 is arranged in the side machine room 5. The guide device 6 is arranged at the top of the shaft 1 and in the side machine room 5. One end of the steel wire rope 3 is connected to the car 2, and the other end enters the traction device 7 under the guidance of the guide device 6 and is finally connected to the counterweight 4.

[0023] With the above structure, the stairwell with lower use value at one side of the shaft 1 can be used as the side machine room 5, the space at the top of the shaft 1 is saved, and the elevator installation requirement of the building with lower floor height at the top of the shaft 1 is met. In addition, the above side machine room 5 is not limited by the area of the shaft 1 and has larger space, which is convenient for maintenance and accommodating more equipment.

[0024] Preferably, the side machine room 5 can be arranged at the side of the top layer of the shaft 1 or the side of the pit according to the actual building pattern and actual requirement.

[0025] The guide device 6 comprises a shaft pulley 61 and a side machine room pulley 62. The shaft pulley 61 is arranged at the upper part of the shaft 1, and the side machine room pulley 62 is arranged at the connection between the side machine room 5 and the shaft 1. According to the first embodiment of the present application, the side machine room 5 is arranged at the side of the top layer of the shaft 1. The steel wire rope 3 connected to the car 2 passes through the first shaft pulley 61a, the first side machine room pulley 62a, the traction device 7, the second side machine room pulley 62b and the second shaft pulley 61b in sequence and is finally connected to the counterweight 4. According to the second embodiment of the present application, as shown in Figure 3As shown, the side machine room 5 is arranged at the side of the pit of the shaft 1, the steel wire rope 3 connected with the car 2 passes through the first shaft pulley 61a and the second shaft pulley 61b in sequence and is connected with the counterweight 4, and then passes through the third side machine room pulley 62c and is finally connected with the traction device 7.

[0026] In combination Figure 4 and Figure 5 As shown, thanks to the design of the side machine room of the present application, the machine room space is expanded, the machine room can accommodate a steel wire rope winding and unwinding device 8 with a larger volume, and the power consumption is reduced to a certain extent, which is energy-saving and environment-friendly. Therefore, the side machine room 5 is also provided with a steel wire rope winding and unwinding device 8, which includes a fixed cross beam 81, a movable cross beam 82, a return spring 83 and a hydraulic cylinder 84; the fixed cross beam 81 is fixedly arranged in the side machine room 5, and the fixed cross beam 81 is provided with a first pulley group 85; the movable cross beam 82 is arranged in parallel with the fixed cross beam 81, and the movable cross beam 82 is provided with a second pulley group 86; the fixed cross beam 81 and the movable cross beam 82 are connected with the return spring 83; and the movable cross beam 82 is also connected with the piston rod of the hydraulic cylinder 84. Taking the scheme that the side machine room 5 is arranged at one side of the top layer of the shaft 1 as an example, the steel wire rope 3 connected with the car 2 passes through the shaft pulley 61 and the side machine room pulley 62, and then passes through the first pulley group 85 and the second pulley group 86 in an up-and-down staggered manner in sequence, and then passes through the traction device 7 and is connected with the counterweight 4. In the empty state, the movable cross beam 82 is subjected to the tension generated by the self-weight of the car 2, and the return spring 83 is compressed, so that the return spring 83 is in the initial compression state; when the car 2 is lowered with people, the pressure on the second pulley group 86 increases, and the return spring 83 is further compressed through the movable cross beam 82, and since the steel wire rope 3 is released when the movable cross beam 82 rises, the rotating speed of the traction device 7 can be correspondingly reduced, and since the working tension of the traction device 7 is only related to the difference between the total weight of the car 2 and the weight of the counterweight 4, the speed of doing work is slowed down under the premise that the working tension is unchanged, that is, the power is reduced. When the empty car 2 rises, the tension of the steel wire rope 3 decreases, and the movable cross beam 82 moves away from the fixed cross beam 81 under the pushing of the return spring 83, that is, the energy stored in the return spring 83 is reused for the work of lifting the car 2, so as to reduce the power of the traction device 7 in this case.

[0027] The addition of the above-mentioned steel wire rope winding and unwinding device 8 can reduce the energy consumption of the elevator in a specific scenario, but also affects the stability of the lifting speed of the car 2. Therefore, the hydraulic cylinder 84 is used to stabilize the lifting speed of the movable cross beam 82, and by controlling the flow rate of the hydraulic oil entering and exiting the hydraulic cylinder 84, the lifting speed of the movable cross beam 82 is stabilized under different tension sizes. In the face of working conditions with opposite energy income and expenditure, such as full load rising, the hydraulic oil entering the hydraulic cylinder 84 can be closed to lock the movable cross beam 82.

[0028] The specific method for precisely controlling the flow rate of the hydraulic oil into and out of the hydraulic cylinder 84 is that the hydraulic cylinder 84 is connected with a hydraulic oil tank 87 through a hydraulic pipe, an electromagnetic valve 88 and a speed regulating valve 89 are arranged on the hydraulic pipe, the electromagnetic valve 88 is used for controlling the on-off of the hydraulic pipe, and the speed regulating valve 89 is used for ensuring that the flow rate of the hydraulic oil flowing through the hydraulic pipe is kept at a preset value.

[0029] In order to improve the safety of the elevator, the bottom of the hoistway 1 is provided with a car anti-falling device 9 and a counterweight anti-falling device 10. The car anti-falling device 9 and the counterweight anti-falling device 10 are composed of a buffer spring 91 and an energy-absorbing silica gel 92.

[0030] The above is the preferred embodiment of the present application, it should be noted that for those skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements are also considered to be within the scope of the present application.

Claims

1. An elevator structure with a side-mounted machine room, characterized in that, The elevator comprises a shaft, a car, a steel wire rope, a counterweight, a side machine room, a guide device and a traction device, The car and the counterweight are arranged in the shaft, and the side machine room is located at one side of the shaft and communicates with each other; The traction device is arranged in the side machine room, the guide device is arranged at the top of the shaft and in the side machine room; One end of the steel wire rope is connected with the car, and the other end enters the traction device under the guidance of the guide device and is finally connected with the counterweight; The guide device comprises a shaft pulley and a side machine room pulley, the shaft pulley is arranged at the upper part of the shaft, and the side machine room pulley is arranged at the connection between the side machine room and the shaft; The side machine room is further provided with a steel wire rope winding and unwinding device, comprising a fixed cross beam, a movable cross beam, a return spring and a hydraulic cylinder; The fixed cross beam is fixedly arranged in the side machine room, and a first pulley set is arranged on the fixed cross beam; The movable cross beam is arranged in parallel with the fixed cross beam, and a second pulley set is arranged on the movable cross beam; The return spring is connected between the fixed cross beam and the movable cross beam; The movable cross beam is further connected with the piston rod of the hydraulic cylinder; The hydraulic cylinder is connected with a hydraulic oil tank through a hydraulic pipe, an electromagnetic valve and a speed regulating valve are arranged on the hydraulic pipe, the electromagnetic valve is used for controlling the on-off of the hydraulic pipe, and the speed regulating valve is used for ensuring that the flow rate of the hydraulic oil flowing through the hydraulic pipe keeps a preset value.

2. The machine room less elevator structure of claim 1, wherein, The side machine room is arranged at the side of the top layer of the shaft or the side of the pit.

3. The machine room less elevator structure of claim 1, wherein, The steel wire rope connected with the car passes through the shaft pulley and the side machine room pulley, then passes through the first pulley set and the second pulley set in an up-down staggered manner, and then is connected with the counterweight after passing through the traction device.

4. The machine room less elevator structure of claim 1, wherein, The side machine room is arranged at the side of the pit of the shaft, one end of the steel wire rope is connected with the car, the other end is connected with the counterweight after passing through the shaft pulley, and then is connected with the traction device after passing through the side machine room pulley.

5. The machine room less elevator structure of claim 1, wherein, The bottom of the shaft is provided with a car anti-falling device and a counterweight anti-falling device.

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