Transformation method of elevator with side machine room and elevator without machine room

Abstract

The invention relates to a transformation method for an elevator with a side machine room and an elevator without a machine room. The transformation method of the side-arranged machine room elevator comprises the steps that a supporting frame is installed in a hoistway, and the supporting frame is located above a counterweight; a traction machine and a top upper pulling wheel are installed on the supporting frame; a top hanging wheel is mounted on the rear side of the car roof diversion sheave; the rope winding mode is changed according to the arrangement structure of the wheel train. The transformation method of the side-arranged machine room elevator is used for transforming the side-arranged machine room elevator into an elevator without a machine room. The side-arranged machine room does not need to be continuously used, meanwhile, a plurality of well parts of the side-arranged machine room elevator, such as a rail, a car frame and a counterweight, are reserved, the transformation cost is low, the construction period is short, and the construction difficulty is low.

Description

Technical Field

[0001] The present application relates to the technical field of elevators, and in particular to a modification method of a side-mounted machine room elevator and a machine room-less elevator. Background Art

[0002] In areas with higher requirements for building space utilization, the demand for machine room-less elevators emerged early on. However, due to the technical limitations at the time, the effect similar to that of a machine room-less elevator could only be achieved by placing the machine room on the side.

[0003] The whole elevator structure of the side-mounted machine room elevator is relatively complex, and it also occupies a large amount of civil construction space. The commonly used method to transform the side-mounted machine room elevator into a machine room-less elevator is to replace the whole side-mounted machine room elevator with a machine room-less elevator with a side-mounted counterweight. However, since the side-mounted machine room elevator generally has a rear-mounted counterweight structure, which is not compatible with the hoistway layout, all components in the hoistway can only be removed and reinstalled according to the hoistway layout of the new elevator with a side-mounted counterweight and machine room-less elevator. This is costly, has a long construction period, and is very difficult to construct. Summary of the invention

[0004] Based on this, it is necessary to provide a modification method for a side-mounted machine room elevator and a machine room-less elevator, which retains many shaft components of the side-mounted machine room elevator, has low modification cost, short construction period, and low construction difficulty.

[0005] A method for modifying an elevator with a side-mounted machine room, comprising:

[0006] Installing a support frame in the hoistway, wherein the support frame is located above the counterweight;

[0007] Installing a traction machine and a top pulley on the support frame;

[0008] Install the top hanging wheel on the rear side of the anti-rope wheel on the car top;

[0009] Change the rope winding method according to the above-mentioned wheel train arrangement structure.

[0010] In one of the embodiments, in the step of installing the traction machine and the top pulley on the support frame, the traction machine is installed above the support frame, and the top pulley is installed below the support frame; in the step of setting the top hanging wheel on the rear side of the car top return rope wheel, the top hanging wheel is installed between the top pulley and the car top return rope wheel, so that the top hanging wheel transfers the rope output from the car top return rope wheel to the top pulley.

[0011] In one of the embodiments, the step of changing the rope winding method according to the above-mentioned wheel train arrangement structure includes: retaining the position of the car top return rope pulley in the car and the position of the car rope head in the low machine room in the side-mounted machine room elevator; one end of the traction rope connected to the traction machine drive is passed through the top pulling wheel, the top hanging wheel and the car top return rope pulley in sequence and then connected to the car rope head, and the other end is passed through the counterweight return rope pulley and then connected to the support frame or the top of the shaft through the counterweight rope head.

[0012] In one embodiment, before the step of setting a top hanging wheel on the rear side of the car top return rope wheel, the method further includes:

[0013] Remove the car guide wheels and counterweight guide wheels in the low machine room;

[0014] In the step of arranging a top hanging wheel on the rear side of the car top return rope wheel, the top hanging wheel is installed in the short machine room.

[0015] In one of the embodiments, the step of setting a top hanging wheel on the rear side of the car top return rope pulley also includes: installing the top hanging wheel on the top of the hoistway; or installing the top hanging wheel on the support frame.

[0016] In one of the embodiments, the projections of the top pulling wheel and the traction machine of the support frame on the bottom pit of the shaft do not overlap with the projection of the car on the bottom pit of the shaft.

[0017] In one of the embodiments, in the step of installing the traction machine and the top pulley on the support frame, the traction machine and the top pulley are installed on the support frame in a direction parallel to the width direction of the car; before the step of changing the rope winding method according to the above-mentioned wheel system arrangement structure, it also includes: obliquely installing the counterweight return rope pulley so that the wheel axis of the counterweight return rope pulley is set at an angle to the direction of the counterweight guide rail gauge; in the step of installing the top hanging wheel on the rear side of the car top return rope pulley, the top hanging wheel is obliquely arranged between the car top return rope pulley and the top pulley relative to the depth direction of the car.

[0018] In one embodiment, before the step of installing the support frame in the hoistway, wherein the support frame is located above the counterweight, the step further includes:

[0019] Demolish the low machine room;

[0020] Before the step of changing the rope winding method according to the above-mentioned gear train arrangement structure, the method further includes:

[0021] A car top return rope pulley is installed at both ends of the car along its width direction, and the two car top return rope pulleys are arranged side by side along the width direction of the shaft, and the projection of the rope outlet positions of the two car top return rope pulleys on the bottom pit of the shaft does not overlap with the projection of the car on the bottom pit of the shaft.

[0022] In one of the embodiments, in the step of installing the traction machine and the top pulley on the support frame, the setting direction of the top pulley is inclined relative to the direction of the counterweight guide rail gauge; the step of setting the top hanging wheel on the rear side of the car top return rope pulley also includes: setting the top hanging wheel between the car top return rope pulley and the top pulley along the depth direction of the car, and the projection of the top hanging wheel on the shaft pit does not overlap with the projection of the car on the shaft pit.

[0023] A machine room-less elevator comprises a hoistway, a sheave assembly, a traction machine arranged in the hoistway, a car and a counterweight, wherein the counterweight is located at the rear side of the car, a support frame is provided at the upper part of the hoistway, the support frame is located above the counterweight, the sheave assembly comprises a top hanging wheel, a top upper pulley and a traction rope, the top hanging wheel and the traction machine are mounted on the support frame, or the top hanging wheel is mounted on one of the support frame, the top of the hoistway or the short machine room, the traction machine is driven and connected to the traction rope, the top hanging wheel and the top upper pulley are both movably connected to the traction rope, the car and the counterweight are both movably connected to the traction rope and can be lifted and lowered in the hoistway.

[0024] The above-mentioned modification method of the side-mounted machine room elevator and the machine room-less elevator adopt the above-mentioned modification method of the side-mounted machine room elevator to transform the side-mounted machine room elevator into a machine room-less elevator, and the side machine room does not need to be used anymore. At the same time, many shaft components of the side-mounted machine room elevator, such as rails, car frames and counterweights, can be retained. The modification cost is low, the construction period is short, and the construction difficulty is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the rope winding structure of a side-mounted machine room elevator before modification according to an embodiment of the present application.

[0026] Figure 2 for Figure 1 A top view of the roping structure of a side-mounted machine room elevator is shown.

[0027] Figure 3 The figure is a schematic diagram of the rope winding structure of the modified machine room-less elevator according to one embodiment of the present application.

[0028] Figure 4 for Figure 3 A top view of the roping structure of a machine roomless elevator is shown.

[0029] Figure 5This is a schematic diagram of the rope winding structure of a modified machine room-less elevator according to another embodiment of the present application.

[0030] Figure 6 for Figure 5 A top view of the roping structure of a machine roomless elevator is shown.

[0031] Description of Figure Numbers:

[0032] 10. Hoistway; 11. Side machine room; 12. Low machine room; 13. Support frame; 20. Car; 21. Return rope pulley on car top; 22. Car guide pulley; 23. Car rope head; 30. Counterweight; 31. Counterweight return rope pulley; 32. Counterweight guide pulley; 33. Counterweight rope head; 34. Counterweight guide rail; 40. Traction machine; 41. Traction wheel; 42. Traction rope; 50. Top hanging wheel; 60. Top pulling wheel. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] The modification method of the side-mounted machine room elevator of an embodiment of the present application is used to transform the side-mounted machine room elevator into a machine room-less elevator. The side-mounted machine room 11 does not need to be used any more, and many shaft 10 components of the side-mounted machine room elevator are retained, with low modification cost and short construction period.

[0035] See also Figure 1 The side-mounted machine room elevator before the transformation includes a traction machine 40, a car 20, a car top return rope pulley 21 arranged on the car 20, a car guide pulley 22, a counterweight 30, a counterweight return rope pulley 31 arranged on the counterweight 30, and a counterweight guide pulley 32.

[0036] It should be noted that, see Figure 1 The side machine room 11 is located above the front side of the shaft 10, wherein the front side of the shaft 10 refers to the side where the landing door is located. Furthermore, a short machine room 12 with very limited height space is also provided above the shaft 10 and the side machine room 11.

[0037] See also Figure 1The traction machine 40 is arranged in the side machine room 11, for example, a support frame 13 is installed in the side machine room 11, and the traction machine 40 is installed on the support frame 13. The car guide wheel 22 and the counterweight guide wheel 32 are both arranged in the low machine room 12. The car 20 and the counterweight 30 are both arranged in the hoistway 10, and the counterweight 30 is located at the rear side of the car 20, that is, the side machine room elevator before the transformation is a counterweight 30 rear-mounted structure. The traction machine 40 is driven and connected with a traction rope 42. After one end of the traction rope 42 passes around the car guide wheel 22 and the car top return rope wheel 21, it is installed in the low machine room 12 through the car rope head 23. After the other end of the traction rope 42 passes around the counterweight guide wheel 32 and the counterweight return rope wheel 31, it is installed in the low machine room 12 using the counterweight rope head 33. In this way, the car 20 and the counterweight 30 are driven to rise and fall in the hoistway 10 by the active rotation of the traction wheel 41.

[0038] Specifically, see Figure 2 The car top return rope pulley 21 is provided with a car top return rope pulley 21, which is arranged at the center position of the top of the car 20, and the car top return rope pulley 21 is arranged along the width direction of the car 20. The counterweight return rope pulley 31 is provided with a counterweight return rope pulley 31, which is arranged at the top of the counterweight 30.

[0039] With respect to the above-mentioned side-mounted machine room elevator, an embodiment of the present application provides a modification method of a side-mounted machine room elevator, comprising:

[0040] S100 , installing a support frame 13 on the upper portion of the hoistway 10 , wherein the support frame 13 is located above the counterweight 30 .

[0041] Specifically, the support frame 13 is fixed to the top of the counterweight guide rail 34. In this way, the counterweight guide rail 34 is used to bear the weight, and no civil construction is required to bear the weight, which can reduce the requirements for the structure of the hoistway 10.

[0042] S200 , installing the traction machine 40 and the top pulley 60 on the support frame 13 .

[0043] S300, a top hanging wheel 50 is arranged on the rear side of the car top return rope wheel 21.

[0044] It should be noted that the number of top hanging wheels 50 can be set according to the actual layout size of the hoistway 10, wherein the actual layout size of the hoistway 10 includes but is not limited to the projection distance between the car top return rope wheel 21 and the top pull-up wheel 60, the rope wheel diameter, etc. For example, the top hanging wheels 50 are provided with one, two, or more than three.

[0045] S400, changing the rope winding method according to the above-mentioned wheel train arrangement structure.

[0046] By adopting the above-mentioned modification method of the side-mounted machine room elevator, the side-mounted machine room elevator is transformed into a machine room-less elevator. The side machine room 11 does not need to be used any more, and many shaft 10 components of the side-mounted machine room elevator, such as rails, car frames and counterweights 30, can be retained. The modification cost is low and the construction period is short.

[0047] In one embodiment, see Figure 1 and Figure 3 In step S200, the traction machine 40 is installed above the support frame 13, and the top pulley 60 is installed below the support frame 13. In step S300, the top hanging wheel 50 is installed between the top pulley 60 and the car top return rope wheel 21, so that the top hanging wheel 50 transfers the rope output from the car top return rope wheel 21 to the top pulley 60. In this arrangement, the top hanging wheel 50 transfers the rope output from the car top return rope wheel 21 to the top pulley 60, so that the traction machine 40 is subjected to downward force, and the downward-pull-type traction machine 40 is the mainstream arrangement mode. If the traction machine 40 needs to be replaced due to damage, aging, etc., it is easier to find a new traction machine 40 that can be replaced, reducing the difficulty of transformation.

[0048] It should be noted that the upper side of the support frame 13 refers to the side of the support frame 13 facing the top of the shaft 10 , and the lower side of the support frame 13 refers to the side of the support frame 13 facing the bottom pit of the shaft 10 .

[0049] Further, see Figure 3 , step S400 includes:

[0050] S410, retaining the position of the car top return rope pulley 21 on the car 20 and the position of the car rope head 23 on the short machine room 12 in the elevator with a side machine room.

[0051] S420, one end of the traction rope 42 driven by the traction machine 40 passes through the top pulling wheel 60, the top hanging wheel 50 and the car top return rope wheel 21 in sequence and is connected to the car rope head 23, and the other end passes through the counterweight return rope wheel 31 and is connected to the support frame 13 or the top of the shaft 10 through the counterweight rope head 33.

[0052] In this way, the traction rope 42 is rewound according to the arrangement structure of the wheel train to obtain a machine room-less elevator.

[0053] In one embodiment, see Figure 1 and Figure 3 , before step S300, further comprising:

[0054] The car guide wheel 22 and the counterweight guide wheel 32 in the short machine room 12 are removed.

[0055] It should be noted that the step of removing the car guide wheel 22 and the counterweight guide wheel 32 in the short machine room 12 may be performed before step S100, between steps S100 and S200, or between steps S200 and S300.

[0056] Further, see Figure 3 In step S300 , the top hanging wheel 50 is installed in the short machine room 12 .

[0057] In this way, the top hanging wheel 50 is installed in the low machine room 12, and the top hanging wheel 50 in the low machine room 12 will not affect the lifting and lowering operation of the car 20 in the hoistway 10, thereby ensuring the safe operation of the elevator.

[0058] The above-mentioned installation of the top hanging wheel 50 in the short machine room 12 is for the case where the height space at the top of the shaft 10 is small. If the height space at the top of the shaft 10 is large enough, the top hanging wheel 50 can also be installed at the top of the shaft 10 instead of in the short machine room 12, so that the short machine room 12 can be used for other purposes. Specifically, in step S300, the top hanging wheel 50 is installed at the top of the shaft 10; or, the top hanging wheel 50 is installed on the support frame 13.

[0059] It should be noted that, see Figure 3 If the traction machine 40 is installed above the support frame 13, the top pull-down wheel is installed below the support frame 13, and the top pull-up wheel 60 is located between the top hanging wheel 50 and the traction machine 40, the top hanging wheel 50 is installed above the support frame 13. On the contrary, if the traction machine 40 is installed below the support frame 13, the top pull-down wheel is installed above the support frame 13, and the traction machine 40 is located between the top hanging wheel 50 and the top pull-up wheel 60, the top hanging wheel 50 is installed below the support frame 13.

[0060] In one embodiment, see Figure 4 , the projection of the top pulley 60 and the traction machine 40 of the support frame 13 in the bottom pit of the hoistway 10 does not overlap with the projection of the car 20 in the bottom pit of the hoistway 10. In this arrangement, the top pulley 60 and the traction machine 40 will not affect the lifting and lowering operation of the car 20, thereby ensuring the safe operation of the elevator.

[0061] In one embodiment, in step S200, the traction machine 40 and the top pulley 60 are installed on the support frame 13 in a direction parallel to the width direction of the car 20. It is understandable that after the modification, the traction wheel 41 of the traction machine 40 and the top pulley 60 of the support frame 13 are arranged in a direction parallel to the width direction of the car 20. Compared with the inclined installation of the traction machine 40 and the top pulley 60, the traction machine 40 and the top pulley 60 are installed in parallel to the support frame 13 in this embodiment, so that the space behind the car 20 occupied by the traction machine 40 and the top pulley 60 is smaller.

[0062] For easier understanding, see Figure 4 and Figure 6 , W is used to represent the width direction of the car 20.

[0063] In this embodiment, the traction sheave 41 and the top pulley 60 are arranged side by side in a direction parallel to the width direction of the car 20 .

[0064] Further, see Figure 2 and Figure 4 Before step S400, the method further includes: installing the counterweight return rope pulley 31 at an angle so that the wheel axis of the counterweight return rope pulley 31 is set at an angle to the direction of the counterweight guide rail gauge.

[0065] It can be understood that, in the side-mounted machine room elevator before the modification, the counterweight return rope pulley 31 is parallel to the guide rail gauge direction of the counterweight 30, while in the present embodiment, the counterweight return rope pulley 31 itself can be selected to be retained, and only the return rope pulley of the side machine room 11 is modified from the original parallel installation structure to an inclined installation structure, which can save the modification cost.

[0066] In this way, since the modified traction wheel 41 is arranged in a direction parallel to the width direction of the car 20, in this embodiment, the counterweight return rope pulley 31 is installed at an angle so that the traction rope 42 wound around the traction wheel 41 can be wound on the counterweight return rope pulley 31.

[0067] In one embodiment, see Figure 2 and Figure 4 , retain the position of the car top return rope pulley 21 on the car 20, that is, the car top return rope pulley 21 is arranged along the width direction of the car 20.

[0068] Further, in step S300, refer to Figure 2 and Figure 4 , the top hanging wheel 50 is arranged between the car top reverse rope wheel 21 and the top upper pulley 60 obliquely relative to the depth direction of the car 20. In this way, it is ensured that the traction rope 42 connects each wheel system.

[0069] The above embodiment retains the number and position of the car top return rope pulley 21, that is, there is one car top return rope pulley 21, which is installed at the center position of the top of the car 20 and is arranged along the width direction of the car 20.

[0070] In the second embodiment, refer to Figure 5 and Figure 6 , change the number and position of the car top anti-ropes 21.

[0071] See also Figure 1 and Figure 5 , before step S100, further comprising:

[0072] The low machine room 12 was demolished.

[0073] Before step S400, the method further includes:

[0074] See also Figure 6 A car top return rope pulley 21 is installed at both ends of the car 20 along its width direction. The two car top return rope pulleys 21 are arranged side by side along the width direction of the hoistway 10, and the projection of the rope outlet positions of the two car top return rope pulleys 21 on the bottom pit of the hoistway 10 does not overlap with the projection of the car 20 on the bottom pit of the hoistway 10.

[0075] It can be understood that the projection of the rope outlet positions of the two car top de-roping wheels 21 on the bottom pit of the hoistway 10 is located outside the projection of the car 20 on the bottom pit of the hoistway 10 .

[0076] In this way, the projections of the top hanging wheel 50 and the car rope end 23 on the bottom pit of the shaft 10 are both located outside the projection of the car 20 on the bottom pit of the shaft 10. In this way, the top hanging wheel 50 and the car rope end 23 can be directly installed on the top of the shaft 10. In this way, the modified elevator does not need to use a low machine room 12, reducing the occupation of civil engineering space.

[0077] If the center or center of gravity of the car 20 is occupied by the center of the guide rail of the car 20, the two car top return ropes are arranged tilted relative to the depth direction of the car 20 so that the combined force of lifting the car 20 coincides with the center or center of the car 20, which is conducive to the smooth operation of the car 20.

[0078] For easier understanding, see Figure 4 and Figure 6 , S is used to represent the depth direction of the car 20.

[0079] Of course, in other implementations, if the center or center of gravity of the car 20 is not occupied by the center of the guide rail of the car 20, the two car top return pulleys 21 can be perpendicular to the depth direction of the car 20.

[0080] It should be noted that after changing the number and position of the car top return rope pulley 21, the position and setting direction of the top hanging wheel 50 and the top pulling wheel 60 are different, while the setting method of the traction machine 40 and the counterweight return rope pulley 31 is the same as that of the first embodiment.

[0081] In one embodiment, in step S200, the top pull wheel 60 is disposed in an inclined direction relative to the counterweight guide rail gauge direction.

[0082] Furthermore, step S300 includes: arranging the top hanging wheel 50 along the depth direction of the car 20, so that the projection of the top hanging wheel 50 on the bottom pit of the hoistway 10 does not overlap with the projection of the car 20 on the bottom pit of the hoistway 10. In this way, the winding of the traction rope 42 is convenient.

[0083] It should be noted that the traction machine 40, support frame 13 and other components in the side machine room 11 are no longer needed after the renovation. Based on the site conditions and the arrangement of the renovation construction, the components in the side machine room 11 may be removed or not.

[0084] The machine room-less motor of an embodiment of the present application, see Figure 4 and Figure 6 , including a hoistway 10, a sheave assembly, a traction machine 40 arranged in the hoistway 10, a car 20 and a counterweight 30. The counterweight 30 is located at the rear side of the car 20. A support frame 13 is provided at the upper part of the hoistway 10, and the support frame 13 is located above the counterweight 30. The sheave assembly includes a top hanging wheel 50, a top upper pulley 60 and a traction rope 42, and the top hanging wheel 50 and the traction machine 40 are installed on the support frame 13, or the top hanging wheel 50 is installed on one of the support frame 13, the top of the hoistway 10 or the short machine room 12. The traction machine 40 is drivingly connected to the traction rope 42, the top hanging wheel 50 and the top upper pulley 60 are both movably connected to the traction rope 42, and the car 20 and the counterweight 30 are both movably connected to the traction rope 42 and can be lifted and lowered in the hoistway 10.

[0085] In one embodiment, see Figure 3 and Figure 4 A car top return rope pulley 21 is provided, and a car top return rope pulley 21 is provided at the center position of the top of the car 20, and the car top return rope pulley 21 is provided along the width direction of the car 20.

[0086] Furthermore, the traction machine 40 is installed above the support frame 13, and the top pulley 60 is installed below the support frame 13, and the top pulley 60 is located between the traction machine 40 and the top hanging wheel 50. In this arrangement, the top hanging wheel 50 transfers the outgoing rope of the car top reverse rope wheel 21 to the top pulley 60, so that the force of the traction machine 40 is downward, and the downward-pull-type traction machine 40 is the mainstream arrangement mode. If the traction machine 40 needs to be replaced due to damage, aging, etc., it is easier to find a new traction machine 40 that can be replaced, reducing the difficulty of transformation.

[0087] Furthermore, the projection of the top pulley 60 and the traction machine 40 of the support frame 13 on the bottom pit of the hoistway 10 does not overlap with the projection of the car 20 on the bottom pit of the hoistway 10. In this arrangement, the top pulley 60 and the traction machine 40 will not affect the lifting and lowering operation of the car 20, thereby ensuring the safe operation of the elevator.

[0088] Furthermore, the traction machine 40 and the top pulley 60 are parallel to the width direction of the car 20. Compared with the manner in which the traction machine 40 and the top pulley 60 are installed obliquely, the traction machine 40 and the top pulley 60 are installed parallel to the support frame 13 in this embodiment, so that the space behind the car 20 occupied by the traction machine 40 and the top pulley 60 is smaller.

[0089] Furthermore, the wheel axis of the counterweight return rope pulley 31 is arranged at an angle with the guide rail gauge direction of the counterweight 30. Thus, since the modified traction machine 40 is parallel to the width direction of the car 20, in this embodiment, the counterweight return rope pulley 31 is installed at an angle so that the traction rope 42 wound around the traction wheel 41 can be wound around the counterweight return rope pulley 31.

[0090] In this embodiment, the top hanging wheel 50 is arranged between the car top return rope wheel 21 and the top pulling wheel 60 at an angle relative to the depth direction of the car 20 .

[0091] In addition, a car rope head 23 and a counterweight rope head 33 are respectively provided at both ends of the traction rope 42. The car rope head 23 is installed on the short machine room 12 or the top of the hoistway 10, and the projection of the car rope head 23 on the bottom pit of the hoistway 10 coincides with the projection of the car 20 on the bottom pit of the hoistway 10. The counterweight rope head 33 is installed on the support frame 13 or the top of the hoistway 10.

[0092] In another embodiment, see Figure 5 and Figure 6, there are two return rope pulleys 21 on the car top. Specifically, a car top return rope pulley 21 is installed at each end of the car 20 along the width direction thereof, and the two car top return rope pulleys 21 are arranged side by side along the width direction of the car 20, and the projection of the rope outlet positions of the two car top return rope pulleys 21 on the bottom pit of the hoistway 10 does not overlap with the projection of the car 20 on the bottom pit of the hoistway 10. In this way, the projections of the top hanging wheel 50 and the car rope head 23 on the bottom pit of the hoistway 10 are both located outside the projection of the car 20 on the bottom pit of the hoistway 10, so that the top hanging wheel 50 and the car rope head 23 can be directly installed on the top of the hoistway 10, so that the modified elevator does not need to use a short machine room 12, reducing the occupation of civil engineering space.

[0093] If the center or center of gravity of the car 20 is occupied by the center of the guide rail of the car 20, the two car top return ropes are arranged tilted relative to the depth direction of the car 20 so that the combined force of lifting the car 20 coincides with the center or center of the car 20, which is conducive to the smooth operation of the car 20.

[0094] Of course, in other implementations, if the center or center of gravity of the car 20 is not occupied by the center of the guide rail of the car 20, the two car top return pulleys 21 can be perpendicular to the depth direction of the car 20.

[0095] Further, see Figure 5 and Figure 6 The traction machine 40 is installed above the support frame 13, and the top pulley 60 is installed below the support frame 13, and the top pulley 60 is located between the traction machine 40 and the top hanging wheel 50. In this arrangement, the top hanging wheel 50 transfers the outgoing rope of the car top reverse rope wheel 21 to the top pulley 60, so that the force of the traction machine 40 is downward, and the downward-pull-type traction machine 40 is the mainstream arrangement mode. If the traction machine 40 needs to be replaced due to damage, aging, etc., it is easier to find a new traction machine 40 that can be replaced, reducing the difficulty of transformation.

[0096] Further, see Figure 6 , the projections of the traction machine 40, the top pull pulley 60 and the top hanging pulley 50 in the bottom pit of the hoistway 10 do not overlap with the projection of the car 20 in the bottom pit of the hoistway 10. In this arrangement, the traction machine 40, the top pull pulley 60 and the top hanging pulley 50 will not affect the lifting and lowering operation of the car 20, thereby ensuring the safe operation of the elevator.

[0097] In this embodiment, refer to Figure 6 The traction sheave 41 is arranged in a direction parallel to the width of the car 20, the top hanging sheave 50 is arranged in a direction parallel to the depth of the car 20, the top pulley 60 is arranged obliquely relative to the traction sheave 41 and the top hanging sheave 50, and the counterweight return rope sheave 31 is arranged obliquely relative to the counterweight guide rail gauge direction. In this way, the traction rope 42 can be wound around each wheel system.

[0098] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0099] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0100] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0101] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0102] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, 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 implementation method.

[0103] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0104] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A method for modifying a side-mounted machine room elevator, characterized in that: include: Installing a support frame in the hoistway, wherein the support frame is located above the counterweight; Installing a traction machine and a top pulley on the support frame; Install the top hanging wheel behind the car top anti-rope wheel Change the rope winding method according to the gear train layout structure.

2. The modification method of the side-mounted machine room elevator according to claim 1, characterized in that: In the step of installing the traction machine and the top pulley on the support frame, the traction machine is installed above the support frame, and the top pulley is installed below the support frame; In the step of arranging a top hanging wheel at the rear side of the car top return rope wheel, the top hanging wheel is installed between the top upper pulley and the car top return rope wheel so that the top hanging wheel transfers the rope output from the car top return rope wheel to the top upper pulley.

3. The modification method of the side-mounted machine room elevator according to claim 2, characterized in that: The step of changing the rope winding method according to the above-mentioned gear train arrangement structure includes: The position of the car top anti-roping wheel in the car and the position of the car rope head in the low machine room of the elevator with side machine room are retained; One end of the traction rope connected to the traction machine drive passes through the top pulling wheel, the top hanging wheel and the car top return rope wheel in sequence and is connected to the car rope head, and the other end passes through the counterweight return rope wheel and is connected to the support frame or the top of the shaft through the counterweight rope head.

4. The modification method of the side-mounted machine room elevator according to claim 1, characterized in that: Before the step of arranging a top hanging wheel at the rear side of the car top reverse rope wheel, the method further comprises: Remove the car guide wheels and counterweight guide wheels in the low machine room; In the step of arranging a top hanging wheel on the rear side of the car top return rope wheel, the top hanging wheel is installed in the short machine room.

5. The modification method of the side-mounted machine room elevator according to claim 1, characterized in that: The step of arranging a top hanging wheel on the rear side of the car top return rope wheel also includes: The top hanging wheel is installed on the top of the hoistway; or, the top hanging wheel is installed on the support frame.

6. The modification method of a side-mounted machine room elevator according to claim 1, characterized in that: The projections of the top pulling wheel and the traction machine of the support frame on the bottom pit of the shaft do not overlap with the projection of the car on the bottom pit of the shaft.

7. The modification method of a side-mounted machine room elevator according to claim 1, characterized in that: In the step of installing the traction machine and the top pulley on the support frame, the traction machine and the top pulley are installed on the support frame in a direction parallel to the width direction of the car; Before the step of changing the rope winding method according to the above wheel train arrangement structure, the method further includes: obliquely installing the counterweight return rope wheel so that the wheel axis of the counterweight return rope wheel is arranged at an angle with the direction of the counterweight guide rail gauge; In the step of installing the top hanging wheel on the rear side of the car top return rope wheel, the top hanging wheel is arranged between the car top return rope wheel and the top upper pulley at an angle relative to the depth direction of the car.

8. The modification method of a side-mounted machine room elevator according to claim 1, characterized in that: Before the step of installing the support frame in the hoistway, wherein the support frame is located above the counterweight, the method further comprises: Demolish the low machine room; Before the step of changing the rope winding method according to the above-mentioned gear train arrangement structure, the method further includes: A car top return rope pulley is installed at both ends of the car along its width direction, and the two car top return rope pulleys are arranged side by side along the width direction of the shaft, and the projection of the rope outlet positions of the two car top return rope pulleys on the bottom pit of the shaft does not overlap with the projection of the car on the bottom pit of the shaft.

9. The modification method of a side-mounted machine room elevator according to claim 8, characterized in that: In the step of installing the traction machine and the top pulley on the support frame, the top pulley is arranged in an inclined direction relative to the direction of the counterweight guide rail gauge; The step of setting a top hanging wheel on the rear side of the car top return rope wheel also includes: setting the top hanging wheel between the car top return rope wheel and the top pulling wheel along the depth direction of the car, and the projection of the top hanging wheel on the shaft pit does not overlap with the projection of the car on the shaft pit.

10. A machine room-less elevator, characterized in that: It includes a hoistway, a sheave assembly, a traction machine arranged in the hoistway, a car and a counterweight, the counterweight is located at the rear side of the car, a support frame is installed in the hoistway, the support frame is located above the counterweight, the sheave assembly includes a top hanging wheel, a top upper pulley and a traction rope, the top hanging wheel and the traction machine are installed on the support frame, or the top hanging wheel is installed on the support frame, the top of the hoistway or a low machine room, the traction machine drive is connected to the traction rope, the top hanging wheel and the top upper pulley are movably connected to the traction rope, the car and the counterweight are movably connected to the traction rope and can be lifted and lowered in the hoistway.

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