Elevator with machine room and installation method thereof

Abstract

The invention relates to an elevator with a machine room and a mounting method thereof. The installation method of the elevator with the machine room comprises the following steps that the counterweight assembly and the car frame are assembled at the bottom of a hoistway; the traction rope is wound around a traction wheel of the traction machine, and the traction rope on the counterweight side is connected with a counterweight diversion sheave of the counterweight assembly; hoisting equipment is used for hoisting a counterweight assembly at the bottom of the hoistway to the top of the hoistway, and the counterweight assembly is connected with a hoisting rope on the lift car side; the traction machine is started, the counterweight assembly is lowered to the bottom of the hoistway through the traction rope, and meanwhile the counterweight assembly is lifted to the top of the hoistway; a traction rope on the car side is connected with a car top diversion sheave of the car frame; and the hoisting rope is tensioned. Thus, an aerial work platform does not need to be erected in the shaft in the whole installation process, constructors do not need to enter a danger area on the upper portion of the shaft, and therefore the safety, efficiency and cost problems caused by aerial platform operation in a traditional scaffold-free technology are solved.

Description

Technical Field

[0001] This application relates to the field of elevator technology, and in particular to a machine room elevator and its installation method. Background Technology

[0002] Currently, in scaffold-free installation methods for machine-room elevators, the installation of counterweights and traction ropes generally adopts a "high-altitude operation" mode. The specific process involves first hoisting the counterweight frame to the top of the shaft, then erecting a suspended work platform above the shaft. Workers then perform operations such as loading the counterweight and threading / connecting the traction ropes on this suspended platform. From a safety perspective, high-altitude operations pose significant safety risks. Summary of the Invention

[0003] Therefore, it is necessary to provide a machine room elevator and its installation method to address the high safety risks caused by the reliance on high-altitude work platforms in existing scaffold-free installation methods.

[0004] In one aspect, this application provides a method for installing a machine room elevator, comprising the following steps:

[0005] Assemble the counterweight components and car frame at the bottom of the shaft;

[0006] The traction rope is looped around the traction sheave of the traction machine, and the traction rope on the counterweight side is connected to the counterweight counter-rotating rope sheave of the counterweight assembly.

[0007] The counterweight assembly at the bottom of the shaft is lifted to the top of the shaft using lifting equipment, and then connected to the traction rope on the side of the car.

[0008] Start the traction machine; the traction rope lowers the counterweight assembly to the bottom of the shaft and simultaneously raises the counterweight assembly to the top of the shaft.

[0009] Connect the traction rope on the side of the car to the anti-rope pulley on the top of the car frame;

[0010] Tighten the traction rope.

[0011] The aforementioned installation method for machine-room elevators eliminates the need for workers to enter the hazardous area above the shaft during the assembly of the counterweight components and car frame, nor does it require the erection of any temporary work platforms in that area. Specifically, the assembly of the counterweight components, car frame, and other components is completed at the bottom of the shaft. The connection between the traction ropes and the counterweight components and car frame is also completed at the bottom of the shaft. Lifting equipment and a traction machine are used as the lifting power to move the counterweight components, car frame, and other components along the shaft's depth. This eliminates the need for an elevated work platform inside the shaft and for workers to enter the hazardous area above the shaft, thus solving the safety, efficiency, and cost challenges associated with elevated platform operations in traditional scaffold-free installation methods.

[0012] In one embodiment, after the step of passing the traction rope around the traction sheave of the traction machine and connecting the traction rope on the counterweight side to the counterweight counter-rotating sheave of the counterweight assembly, and before the step of using lifting equipment to lift the counterweight assembly at the bottom of the hoistway to the top of the hoistway and connecting the counterweight assembly to the traction rope on the car side, the method further includes:

[0013] Determine the length of the traction rope and install the traction rope on the car side onto the rope head plate on the car side.

[0014] In one embodiment, the step of determining the length of the traction rope and installing the traction rope on the car side to the rope head plate on the car side specifically includes the following steps:

[0015] The traction rope on the car side is cut to make the length of the traction rope meet the requirements for elevator operation.

[0016] Pass the cut traction rope from the side of the car through the hoisting pulley;

[0017] A cone sleeve is installed on the traction rope on the car side. After passing through the floor of the machine room, the cone sleeve is connected to the rope head plate on the car side.

[0018] Fine-tune the rope ends until the lowest points of all the U-shaped traction ropes are on the same horizontal plane.

[0019] In one embodiment, the step of using lifting equipment to lift the counterweight assembly at the bottom of the hoistway to the top of the hoistway and connecting the counterweight assembly to the traction rope on the car side includes the following steps:

[0020] Lift the counterweight assembly to the top of the shaft;

[0021] Connect the counterweight assembly to the lifting pulley;

[0022] Operate the lifting equipment and lower the counterweight components until the traction rope and the auxiliary sling of the lifting equipment are taut, and the wire rope and the main sling of the lifting equipment are slack.

[0023] In one embodiment, after the step of connecting the traction rope on the car side to the anti-cord pulley on the car top of the car frame, and before the step of tensioning the traction rope, the following step is further included:

[0024] Disconnect the hoisting pulley from the traction rope; operate the hoisting equipment, lower the counterweight assembly to the bottom of the car frame, and remove the counterweight assembly.

[0025] In one embodiment, before starting the traction machine, the clamp assembly is loosened from securing the traction rope on the car side, and the connection between the counterweight assembly and the lifting equipment is released.

[0026] After the counterweight assembly is lowered to the bottom of the shaft, the traction rope on the car side is clamped by the clamping plate assembly.

[0027] In one embodiment, the step of connecting the traction rope on the car side to the anti-rope pulley on the car top of the car frame includes the following steps:

[0028] Operate the lifting equipment to lift the counterweight assembly, causing the traction ropes on the car side to slack.

[0029] Install the traction rope on the car side to the anti-rope pulley on the car top of the car frame.

[0030] In one embodiment, the step of tensioning the traction rope includes the following steps:

[0031] Adjust the tension of the clamping plate assembly and release the brake to tension the traction rope on the car side;

[0032] Adjust the tension of the traction ropes at the rope head plate on the car side until the lowest point of all the U-shaped traction ropes is at the same horizontal plane;

[0033] Continue releasing the brake to fully tension the traction rope and form the formal traction system.

[0034] In one embodiment, before the counterweight assembly at the bottom of the hoistway is lifted to the top of the hoistway using lifting equipment and before the counterweight assembly is connected to the traction rope on the car side, the following steps are also included:

[0035] Assemble heavy components at the bottom of the shaft.

[0036] Secondly, this application also provides a machine room elevator, which is obtained by the machine room elevator installation method described in any of the above claims.

[0037] In the aforementioned machine-room elevator, during the assembly phase of the counterweight components and car frame, construction workers do not need to enter the hazardous area above the shaft, nor do they need to erect any temporary work platforms in that area. Specifically, the assembly of components such as the counterweight components, car frame, and ballast components is completed at the bottom of the shaft. The connection between the traction ropes and the counterweight components and car frame is also completed at the bottom of the shaft. The lifting equipment and traction machine are used as the lifting power to complete the displacement of the counterweight components, ballast components, and car frame along the depth of the shaft. In this way, the entire installation process does not require the erection of a high-altitude work platform inside the shaft, nor does it require construction workers to enter the hazardous area above the shaft, thus solving the safety, efficiency, and cost problems associated with high-altitude platform operations in traditional scaffold-free processes. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the counterweight assembly process in the installation method of a machine room elevator according to an embodiment of this application.

[0039] Figure 2 This is a schematic diagram of the car frame assembly process in the installation method of a machine room elevator according to an embodiment of this application.

[0040] Figure 3 This is a schematic diagram of the traction rope assembly process in the installation method of a machine room elevator according to an embodiment of this application.

[0041] Figure 4 This is a schematic diagram of the counterweight component being lifted to the top of the shaft in an installation method for a machine room elevator according to an embodiment of this application.

[0042] Figure 5 This is a schematic diagram of the counterweight assembly descending to the tensioned position in the installation method of a machine room elevator according to an embodiment of this application.

[0043] Figure 6 This is a schematic diagram of the traction machine operating in an installation method for a machine room elevator according to an embodiment of this application.

[0044] Figure 7 This is a schematic diagram showing the connection between the traction rope and the anti-reverse sheave on the car top in the installation method of a machine room elevator according to an embodiment of this application.

[0045] Figure 8 This is a schematic diagram illustrating the adjustment of the tightness of the clamping plate assembly in the installation method of a machine room elevator according to an embodiment of this application.

[0046] Explanation of icon numbers:

[0047] 10. Hoistway; 20. Machine room; 21. Hook; 22. Lifting mechanism; 30. Traction machine; 31. Traction sheave; 32. Traction rope; 40. Counterweight assembly; 41. Counterweight frame; 42. Counterweight block; 50. Car frame; 51. Car top anti-rope sheave; 60. Counterweight assembly; 61. Lifting net; 70. Lifting equipment; 71. Suspension assembly; 711. Wire rope; 712. Main sling; 713. Auxiliary sling; 714. First shackle; 80. Clamping plate assembly; 90. Lifting pulley. Detailed Implementation

[0048] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0049] Currently, in scaffold-free installation methods for machine-room elevators, the installation of counterweights and traction ropes generally adopts a "high-altitude operation" mode. The specific process involves first hoisting the counterweight frame to the top of the shaft, then erecting a suspended work platform above the shaft. Workers then perform operations such as loading the counterweight and threading / connecting the traction ropes on this suspended platform. From a safety perspective, high-altitude operations pose significant safety risks.

[0050] Furthermore, if temporary work platforms are temporarily erected on-site using materials such as steel pipes, issues arise such as inconsistent material specifications and difficulty in ensuring structural reliability. Moreover, the high-altitude erection and dismantling processes are inherently complex and dangerous, leading to high safety risks. While using prefabricated integrated work platforms can improve erection efficiency, it increases the purchase and inspection costs, resulting in poor economic efficiency. Additionally, these platforms still require high-altitude installation, failing to eliminate the inherent safety risks during erection and dismantling.

[0051] To address the issues of high safety risks, complex procedures, and increased costs associated with existing scaffold-free installation methods that rely on aerial work platforms, this application provides an embodiment of an installation method for a machine room elevator, comprising the following steps:

[0052] See Figure 1 and Figure 2 At the bottom of the shaft 10, the counterweight assembly 40 and the car frame 50 are assembled respectively. Since the counterweight assembly 40 and the car frame 50 are assembled at the bottom of the shaft 10, the safety risks of working at height can be avoided, thereby ensuring the personal safety of construction personnel.

[0053] Step S100 includes:

[0054] S110. Hoist the counterweight frame 41 and multiple counterweight blocks 42 into the bottom of the shaft 10, and hoist the upper beam, columns and bottom beam and other components into the bottom of the shaft 10.

[0055] See Figure 1 S120. At the bottom of the hoistway 10, a certain number of counterweight blocks 42 are installed into the counterweight frame 41 to form the counterweight assembly 40. It should be noted that a certain number of counterweight blocks 42 means that the weight of the counterweight frame 41 is 60% of the elevator's rated load. After the counterweight blocks 42 are installed, they are fixed with wire ropes and rope clamps, and guide wheels are installed on the counterweight frame 41.

[0056] See Figure 2 S130, At the bottom of the shaft 10, the upper beam, column and bottom beam and other components are assembled to form the car frame 50.

[0057] It should be noted that steps S120 and S130 can be interchanged. Specifically, at the bottom of the hoistway 10, the counterweight assembly 40 can be assembled first, followed by the car frame 50; or the car frame 50 can be assembled first, followed by the counterweight assembly 40.

[0058] See Figure 3 S200, the traction rope 32 is passed around the traction sheave 31 of the traction machine 30, and the traction rope 32 on the counterweight side is connected to the counterweight counter-rotating rope sheave of the counterweight assembly 40.

[0059] For example, the counterweight reel is located on top of the counterweight frame 41.

[0060] For example, the traction machine 30 is located in the machine room 20 above the hoistway 10. The floor of the machine room 20 is provided with a clearance hole opposite to the counterweight assembly 40. The traction rope 32 on the counterweight side passes through the clearance hole and is connected to the counterweight counter-rotating rope sheave of the counterweight assembly 40 at the bottom of the hoistway 10. After the traction rope 32 passes around the counterweight counter-rotating rope sheave, the crossbeam on the counterweight frame 41 is restored and the bolts are tightened. The counter-rotating rope sheave limit plate, anti-jump bar, and protective cover of the counterweight frame 41 are also restored.

[0061] It should be noted that after step S200, it is observed and confirmed that the tension of the traction rope 32 that passes over the counterweight sheave remains basically consistent.

[0062] See Figure 4 and Figure 5 S500, using the lifting equipment 70, the counterweight assembly 60 at the bottom of the hoistway 10 is lifted to the top of the hoistway 10, and the counterweight assembly 60 lifted to the top of the hoistway 10 is connected to the traction rope 32 on the car side.

[0063] The lifting equipment 70 is located in the machine room 20. The lifting equipment 70 can be a winch, electric hoist, or manual hoist, etc.

[0064] Further, see Figure 3 , Figure 4 and Figure 5 The suspension assembly 71 includes a wire rope 711, an anti-twist device or a closed-loop hook, a main sling 712, and an auxiliary sling 713. The machine room 20 is equipped with a hook 21, which has a lifting mechanism 22. The wire rope 711 is connected to the lifting mechanism 22 and passes through the floor of the machine room 20. The main sling 712 is connected to the wire rope 711 via the anti-twist device or the closed-loop hook. The main sling 712 has a first shackle 714 and a second shackle spaced apart, with the first shackle 714 located below the second shackle. The counterweight assembly 60 is connected to the main sling 712 via the first shackle 714. One end of the auxiliary sling 713 is connected to the first shackle 714, and the other end is connected to the second shackle.

[0065] See Figure 7S600, start the traction machine 30, the traction rope 32 lowers the counterweight assembly 60 to the bottom of the shaft 10, and at the same time raises the counterweight assembly 40 to the top of the shaft 10.

[0066] It should be noted that before starting the traction machine 30, the connection between the lifting equipment 70 and the counterweight assembly 60 is disconnected, so that the traction machine 30, traction rope 32, counterweight assembly 40 and counterweight assembly 60 are connected to form a temporary traction system. In the temporary traction system, the counterweight assembly 60 is equivalent to the elevator car.

[0067] S700, connect the traction rope 32 on the car side to the car top anti-rope pulley 51 of the car frame 50.

[0068] It should be noted that after connecting the traction rope 32 on the car side to the anti-reverse rope sheave 51 on the car top, the connection between the traction rope 32 on the car side and the counterweight assembly 60 is disconnected.

[0069] S900, tensioned traction rope 32.

[0070] The aforementioned installation method for a machine room elevator eliminates the need for workers to enter the hazardous area above the shaft 10 or erect any temporary work platform during the assembly of the counterweight component 40 and car frame 50. Specifically, the assembly of the counterweight component 40, car frame 50, and counterweight component 60 is completed at the bottom of the shaft 10. The connection between the traction rope 32 and the counterweight component 40 and car frame 50 is also completed at the bottom of the shaft 10. The lifting equipment 70 and traction machine 30 are used as the lifting power to move the counterweight component 40, counterweight component 60, and car frame 50 within the depth of the shaft 10. This eliminates the need for an elevated work platform inside the shaft 10 or for workers to enter the hazardous area above the shaft 10, thus solving the safety, efficiency, and cost problems associated with elevated platform operations in traditional scaffold-free installation methods.

[0071] In one embodiment, after step S200, the method further includes:

[0072] S300. Determine the length of the traction rope 32 and install the traction rope 32 on the car side onto the rope head plate on the car side.

[0073] Furthermore, step S300 includes the following steps:

[0074] S310. Cut the traction rope 32 on the car side so that the length of the traction rope 32 meets the elevator operation requirements.

[0075] Pull all the traction ropes 32 into the machine room 20 and straighten them. Measure the length of the marked traction ropes 32 and cut them. Compare the remaining traction ropes 32 with the marked lengths and cut them. When comparing, arrange and tighten all the traction ropes 32.

[0076] See Figure 3 S320, Pass the cut traction rope 32 on the side of the car through the hoisting pulley 90.

[0077] Among them, the hoisting pulley 90 is suspended at an appropriate position on the traction machine 30. In the temporary traction system, the hoisting pulley 90 is equivalent to the car top anti-rope pulley 51.

[0078] It should be noted that the lifting pulley 90 includes a hanger and a pulley. The pulley is rotatably mounted on the hanger, and the traction rope 32 is movably threaded between the hanger and the outer circumference of the pulley.

[0079] S330. Install a cone sleeve on the traction rope 32 on the car side. After the cone sleeve passes through the floor of the machine room 20, it is connected to the rope head plate on the car side.

[0080] S340, fine-tune the rope ends until all traction ropes 32 have the same U-shape height. This ensures that the tension of all traction ropes 32 is uniform.

[0081] Understandably, the lowest point of all the U-shaped traction ropes 32 is located on the same horizontal plane.

[0082] In one embodiment, between step S300 and step S500, the following step is further included:

[0083] S400. At the bottom of the shaft 10, the counterweight assembly 60 is assembled. Because the counterweight assembly 60 is assembled at the bottom of the shaft 10, the safety risks associated with working at heights are avoided, thus ensuring the personal safety of construction personnel.

[0084] Further, step S400 includes:

[0085] S410. Lay the hoisting net 61 flat under the car.

[0086] S420. Place a strapping strap below the hoisting net 61.

[0087] It should be noted that steps S410 and S420 can be interchanged. For example, first, tie-down straps can be set at the bottom of the car, and then lifting straps can be laid flat on the tie-down straps.

[0088] S430. Place a counterweight on the hoisting net 61.

[0089] Optionally, the counterweight is laid flat on the hoisting net 61.

[0090] It should be noted that the weight of the counterweight should be controlled within 350kg±20kg, and the number of counterweights should be as even as possible within this weight range.

[0091] S440. Fold the hoisting net 61 in half so that the hoisting net 61 wraps around the counterweight.

[0092] S450. Use strapping to bind the lifting net 61 to the counterweight.

[0093] Thus, by using steps S410 to S450, the assembly of the counterweight component 60 can be completed, simplifying the assembly process and improving assembly efficiency.

[0094] In one embodiment, step S500 further includes the following steps:

[0095] See Figure 3 and Figure 4 S510, lift the counterweight assembly 60 to the top of the shaft 10;

[0096] S520. Connect the counterweight assembly 60 to the lifting pulley 90.

[0097] Specifically, the auxiliary sling 713 is pulled from the shaft 10 to the machine room 20, the second shackle is released from locking the auxiliary sling 713, the auxiliary sling 713 is connected to the hanging hole of the lifting pulley 90 inside the machine room 20, and then the lifting pulley 90 is lowered into the shaft 10 through the clearance hole of the machine room 20.

[0098] See Figure 4 and Figure 5 S530, operate the lifting equipment 70, lower the counterweight assembly 60 until the auxiliary sling 713 and the traction rope 32 are tensioned, and the wire rope 711 and the main sling 712 of the lifting equipment 70 are relaxed.

[0099] In one embodiment, see Figure 6 In step S600, before starting the traction machine 30, the clamping plate assembly 80 is loosened from fixing the traction rope 32 on the car side, and the connection between the counterweight assembly 60 and the lifting equipment 70 is released.

[0100] Specifically, the clamp assembly 80 installed on the main beam is removed to prevent friction between the traction rope 32 and the clamp assembly 80 during operation. Furthermore, the connection between the wire rope and the main sling 712 is disconnected. At this point, the counterweight assembly 60 is suspended from the lifting pulley 90 via the auxiliary sling 713. The lifting pulley 90 is equivalent to the car top anti-rope pulley 51, and the counterweight assembly 60 is equivalent to the car. Thus, the traction machine 30, traction rope 32, counterweight assembly 40, counterweight assembly 60, and lifting pulley 90 work together to form a temporary traction system.

[0101] Furthermore, in step S600, after the counterweight assembly 60 is lowered to the bottom of the hoistway 10, the method further includes: clamping the traction rope 32 on the car side with the clamping plate assembly 80. In this way, the traction rope 32 can be fixed, making it easier to connect the traction rope 32 to the car top anti-rope pulley 51.

[0102] In one embodiment, step S700 further includes the following steps:

[0103] See Figure 7 S710, operate the lifting equipment 70, lift the counterweight assembly 60, so that the traction rope 32 on the car side is slack.

[0104] Specifically, the lifting equipment 70 is operated to move the suspension assembly 71 downward to the bottom of the hoistway 10, and the suspension assembly 71 is connected to the counterweight assembly 60. Then, the counterweight assembly 60 is raised, causing the traction rope 32 on the car side to slack.

[0105] S720, Install the traction rope 32 on the car side to the car top anti-rope pulley 51 of the car frame 50.

[0106] Specifically, remove the support plate of the anti-rope wheel on one side, put the traction rope 32 into the anti-rope wheel 51 on the car top in sequence, and restore the limit plate, anti-jump bar, etc.

[0107] In one embodiment, after step S700 and before step S900, the method further includes:

[0108] Step S800: Disconnect the hoisting pulley 90 from the traction rope 32; operate the hoisting equipment 70, lower the counterweight assembly 60 to the bottom of the car frame 50, and remove the counterweight assembly 60.

[0109] In one embodiment, step S900 specifically includes the following steps:

[0110] See Figure 8 S910, adjust the tension of the clamp assembly 80 and release the brake to tension the traction rope 32 on the car side.

[0111] It should be noted that loosening the bolts of the clamp assembly 80, for example, loosening all the bolts of the clamp assembly 80 by about 1 / 4 turn each time, releases the brake, causing the traction rope 32 to move towards the counterweight side until it is fully tensioned.

[0112] Furthermore, after step S910, the following steps are also included:

[0113] S920. Adjust the tension of the traction ropes 32 at the rope head plate on the car side until the lowest point of all the U-shaped traction ropes 32 is on the same horizontal plane. This ensures that all the traction ropes 32 are subjected to uniform force.

[0114] S930, continue to release the brake, so that the traction rope 32 is fully tensioned to form the formal traction system.

[0115] This application also provides a machine room elevator, which is obtained by the installation method of the machine room elevator of any of the above embodiments.

[0116] In the aforementioned elevator with machine room 20, during the assembly phase of the counterweight component 40 and car frame 50, construction workers do not need to enter the danger zone above the shaft 10, nor do they need to erect any temporary work platforms in that area. Specifically, the assembly of components such as the counterweight component 40, car frame 50, and counterweight component 60 is completed at the bottom of the shaft 10. The connection between the traction rope 32 and the counterweight component 40 and car frame 50 is also completed at the bottom of the shaft 10. The lifting equipment 70 and traction machine 30 are used as the lifting power to complete the displacement of the counterweight component 40, counterweight component 60, and car frame 50 in the depth direction of the shaft 10. In this way, the entire installation process does not require the erection of a high-altitude work platform inside the shaft 10, nor does it require construction workers to enter the danger zone above the shaft 10, thus solving the safety, efficiency, and cost problems brought about by high-altitude platform operations in traditional scaffold-free processes.

[0117] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0118] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0119] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0120] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0121] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0122] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0123] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for installing a machine room elevator, characterized in that, Includes the following steps: The counterweight assembly and car frame are assembled at the bottom of the shaft. The traction rope is looped around the traction sheave of the traction machine, and the traction rope on the counterweight side is connected to the counterweight counter-rotating rope sheave of the counterweight assembly. The counterweight assembly at the bottom of the shaft is lifted to the top of the shaft using lifting equipment, and then connected to the traction rope on the side of the car. Start the traction machine; the traction rope lowers the counterweight assembly to the bottom of the shaft and simultaneously raises the counterweight assembly to the top of the shaft. Connect the traction rope on the side of the car to the anti-rope pulley on the top of the car frame; Tighten the traction rope.

2. The installation method of the machine room elevator according to claim 1, characterized in that, After the step of passing the traction rope around the traction sheave of the traction machine and connecting the traction rope on the counterweight side to the counterweight counter-rotating sheave of the counterweight assembly, and before the step of using lifting equipment to lift the counterweight assembly at the bottom of the shaft to the top of the shaft and connecting the counterweight assembly to the traction rope on the car side, the following steps are also included: Determine the length of the traction rope and install the traction rope on the car side onto the rope head plate on the car side.

3. The installation method for a machine room elevator according to claim 2, characterized in that, The step of determining the length of the traction rope and installing the traction rope on the car side to the rope head plate on the car side specifically includes the following steps: The traction rope on the car side is cut to make the length of the traction rope meet the requirements for elevator operation. Pass the cut traction rope from the side of the car through the hoisting pulley; A cone sleeve is installed on the traction rope on the car side. After passing through the floor of the machine room, the cone sleeve is connected to the rope head plate on the car side. Fine-tune the rope ends until the lowest points of all the U-shaped traction ropes are on the same horizontal plane.

4. The installation method of the machine room elevator according to claim 3, characterized in that, The step of using lifting equipment to lift the counterweight assembly at the bottom of the hoistway to the top of the hoistway and connecting the counterweight assembly to the traction rope on the side of the car includes the following steps: Lift the counterweight assembly to the top of the shaft; Connect the counterweight assembly to the lifting pulley; Operate the lifting equipment and lower the counterweight components until the traction rope and the auxiliary sling of the lifting equipment are taut, and the wire rope and the main sling of the lifting equipment are slack.

5. The installation method for a machine room elevator according to claim 3, characterized in that, After the step of connecting the traction rope on the car side to the anti-cord pulley on the car top of the car frame, and before the step of tensioning the traction rope, the following steps are also included: Disconnect the hoisting pulley from the traction rope; operate the hoisting equipment, lower the counterweight assembly to the bottom of the car frame, and remove the counterweight assembly.

6. The installation method of the machine room elevator according to claim 1, characterized in that, Before starting the traction machine, loosen the clamp assembly from fixing the traction rope on the car side and disconnect the counterweight assembly from the lifting equipment. After the counterweight assembly is lowered to the bottom of the shaft, the traction rope on the car side is clamped by the clamping plate assembly.

7. The installation method of the machine room elevator according to claim 1, characterized in that, The step of connecting the traction rope on the car side to the anti-rope pulley on the car top of the car frame includes the following steps: Operate the lifting equipment to lift the counterweight assembly, causing the traction ropes on the car side to slack. Install the traction rope on the car side to the anti-rope pulley on the car top of the car frame.

8. The installation method of the machine room elevator according to claim 1, characterized in that, The step of tensioning the traction rope includes the following steps: Adjust the tension of the clamping plate assembly and release the brake to tension the traction rope on the car side; Adjust the tension of the traction ropes at the rope head plate on the car side until the lowest point of all the U-shaped traction ropes is at the same horizontal plane; Continue releasing the brake to fully tension the traction rope and form the formal traction system.

9. The installation method of the machine room elevator according to claim 1, characterized in that, Before using lifting equipment to lift the counterweight assembly at the bottom of the hoistway to the top of the hoistway and connect the counterweight assembly to the traction rope on the car side, the following steps are also included: Assemble heavy components at the bottom of the shaft.

10. A machine room elevator, characterized in that, The machine room elevator is obtained by using the installation method described in any one of claims 1 to 9.

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