Elevator of high structural strength

Abstract

An elevator of high structural strength. The elevator (10) comprises a car (100), which comprises a car body (1) and a plurality of car frames (2) connected to the car body (1), the car frames (2) being constructed to be vertical frames, the car frames (2) surrounding the car body (1), and there being a plurality of car frames (2); a plurality of guide rail groups (200), each of which comprises two guide rails (201) extending vertically and respectively arranged on two opposite sides of the car (100), the guide rail groups (200) corresponding to the car frames (2) on an one-to-one basis, and two opposite sides of each car frame (2) respectively being in sliding connections to the two guide rails (201) of the guide rail group (200) corresponding to the car frame (2); and a traction assembly (300), which is configured to drive the car (100) to slide along the guide rails (201). The car frames (2) are bearing structures for the car (100), and the self-weight and carrying weight of the car (100) are both transferred by the car frames (2). Since there are a plurality of car frames (2), the car frames (2) are arranged to correspond to the guide rail groups (200) on an one-to-one basis, each car frame (2) sliding along the guide rail group (200) corresponding thereto. The car (100) has high structural strength, and undergoes balanced stress.

Description

An elevator with high structural strength

[0001] This application claims priority to the Chinese patent application filed on February 22, 2024, with application number 202420338127.3 and invention name “A kind of elevator with high structural strength”, the contents of which should be understood as incorporated into this application by reference. Technical Field

[0002] The present application relates to the technical field of elevators, and more particularly, to an elevator with high structural strength. Background Art

[0003] Currently, machine-room-less freight elevators with a 4:1 traction ratio typically feature a single car frame, with floor beams installed at the front and rear ends of the car, connecting to a return pulley. This structure is only suitable for small-tonnage machine-room-less freight elevators. As the load increases, a single car frame becomes insufficiently strong.

[0004] At the same time, because the car frame is set in the middle of the car, when a car frame needs to be added, car frames are added at the front and rear ends of the car at the same time, resulting in three car frames on the car, which is a bloated structure. On the other hand, because the middle car frame is already matched with a set of guide rails, when adding another set of guide rails, either the guide rails are matched with the car frame at the front end of the car, the guide rails are matched with the car frame at the rear end of the car, or the two guide rails of the set of guide rails are matched with the two car frames at the front and rear ends of the car respectively, which actually weakens the force between the car and the guide rails. Summary of the Invention

[0005] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0006] The present invention provides an elevator with high structural strength, comprising:

[0007] A car, comprising a box body and a plurality of car frames connected to the box body, wherein the car frames are constructed as upright frames, surround the box body, and the number of the car frames is plural;

[0008] a plurality of guide rail groups, including two guide rails extending vertically and disposed on opposite sides of the car, the guide rail groups corresponding to the car frames one-to-one, and the opposite sides of each car frame being slidably connected to the two guide rails of the guide rail group corresponding to the car frame; and

[0009] The traction assembly is configured to drive the car to slide along the guide rail.

[0010] In an exemplary embodiment, the traction assembly includes a traction rope and a plurality of car movable pulley assemblies disposed below the box body;

[0011] The car movable pulley groups are arranged in a one-to-one correspondence with the car frames, the car frames are connected to the corresponding car movable pulley groups, and the pulling ropes pass around a plurality of car movable pulley groups to carry the car.

[0012] In an exemplary embodiment, the car further comprises a plurality of cross beams disposed below the box body, the cross beams being disposed in one-to-one correspondence with the car frame;

[0013] The crossbeam is arranged on one side of the car frame corresponding to it, and each of the car movable pulley groups is arranged between the corresponding car frame and the crossbeam corresponding to the car frame, and is connected to the crossbeam.

[0014] In an illustrative embodiment, the number of the car frame, the crossbeam and the car movable pulley set are two, and the two crossbeams are respectively arranged on the opposite sides of the two car frames.

[0015] In an exemplary embodiment, the car further includes a plurality of connecting beams, and each two adjacent car frames are connected by the plurality of connecting beams.

[0016] In an illustrative embodiment, the car frame includes an upper beam located above the box body;

[0017] The plurality of connecting beams include a first connecting beam and a second connecting beam both perpendicular to the upper beam;

[0018] The first connecting beam is arranged on a side of the upper beam facing away from the box body, and its two ends are respectively connected to the upper beams of two adjacent car frames;

[0019] The second connecting beam is arranged on a side of the upper beam facing the box body, and both ends are respectively connected to the upper beams of two adjacent car frames.

[0020] In an exemplary embodiment, the car frame includes a side beam located on one side of the box body;

[0021] The plurality of connecting beams include a third connecting beam perpendicular to the side beams;

[0022] Both ends of the third connecting beam are respectively connected to the side beams of two adjacent car frames.

[0023] In an illustrative embodiment, the connecting beam is a channel steel.

[0024] In an exemplary embodiment, the pulling ratio of the elevator is set to 4:1.

[0025] In an exemplary embodiment, the elevator further comprises:

[0026] a main beam, disposed above the guide rail on one side of the car; and

[0027] a follower beam disposed above the guide rail on the other side of the car;

[0028] The pulling assembly further comprises:

[0029] a counterweight pulley assembly, arranged on the main beam;

[0030] a counterweight, disposed below the counterweight fixed pulley block;

[0031] Counterweight movable pulley block, connected to the counterweight

[0032] A traction machine is arranged on the main beam and is provided with a traction wheel;

[0033] A fixing device, arranged on the main beam;

[0034] a fixed pulley assembly for the car, arranged on the secondary beam; and

[0035] Among them, one end of the traction rope is connected to the fixing device, and the other end is passed around the heavy movable pulley group, the counterweight fixed pulley group, the traction wheel, a group of the car movable pulley group, the car fixed pulley group, and another group of the car movable pulley group and connected to the fixing device.

[0036] In the technical solution of the present application, the car frame is the load-bearing structure of the car, and the car's own weight and load are both transmitted by the car frame. Since the number of car frames is plural, the car frames and guide rail groups are arranged in a one-to-one correspondence, and each car frame slides along the guide rail group corresponding to it. This type of car structure has high strength and the car is subjected to balanced force.

[0037] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained through the structures particularly pointed out in the description and the drawings.

[0038] Summary of the Figures

[0039] The accompanying drawings are used to provide a further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0040] FIG1 is a schematic front view of an elevator according to an embodiment of the present application;

[0041] FIG2 is a perspective schematic diagram of an elevator in an embodiment of the present application;

[0042] FIG3 is a schematic front view of a car in an embodiment of the present application;

[0043] FIG4 is a perspective schematic diagram of a car in an embodiment of the present application;

[0044] FIG5 is a perspective diagram of a car in another perspective according to an embodiment of the present application;

[0045] FIG6 is a schematic diagram of a rope winding for a freight elevator in an embodiment of the present application.

[0046] Reference numerals: 10, elevator; 100, car; 1, box body; 11, top plate; 12, bottom plate; 13, side plate; 14, column; 2, Car frame; 21. Upper beam; 22. Lower beam; 23. Side beam; 3. Connecting beam; 31. First connecting beam; 32. Second connecting beam; 33. Third connecting beam; 34. Fourth connecting beam; 4. Cross beam; 200. Guide rail group; 201. Guide rail; 300. Traction assembly; 302. Car fixed pulley group; 3021. Car fixed pulley; 303. Fixing device; 304. Counterweight fixed pulley group; 3041. Counterweight fixed pulley; 305. Traction machine; 3051. Traction wheel; 306. Counterweight movable pulley group; 3061. Counterweight movable pulley; 307. Car movable pulley group; 3071. Car movable pulley; 308. Counterweight; 3081. Counterweight block; 3082. Counterweight frame; 309. Traction rope; 400. Main beam; 500. Slave beam.

[0047] Details

[0048] To make the purpose, technical solutions and advantages of this application more clear, the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of this application can be combined with each other in any way.

[0049] As shown in Figures 1 and 2 , an elevator 10 according to an embodiment of the present application is provided. The elevator 10 may be a machine-room-less freight elevator. The elevator 10 includes a car 100 , a traction assembly 300 , and a plurality of guide rail assemblies 200 .

[0050] As shown in Figure 3, the car 100 includes a box body 1 and a plurality of car frames 2. The box body 1 can be constructed as a square box body 1. The box body 1 is configured to load cargo. The box body 1 includes a top plate 11, a bottom plate 12 and two side plates 13. The top plate 11 is arranged above the bottom plate 12, and the top plate 11 and the bottom plate 12 are parallel to each other. The top plate 11 and the bottom plate 12 can be arranged horizontally. The two side plates 13 are both perpendicular to the bottom plate 12. The two side plates 13 can be arranged vertically. The two side plates 13 are arranged between the top plate 11 and the bottom plate 12, and the two ends of one side plate 13 are respectively connected to one end of the top plate 11 and one end of the bottom plate 12, and the two ends of the other side plate 13 are respectively connected to the other end of the top plate 11 and the other end of the bottom plate 12.

[0051] As shown in Figures 4 and 5, the car frame 2 includes an upper beam 21, a lower beam 22, and two side beams 23. The upper beam 21, the lower beam 22, and the two side beams 23 are all constructed in a straight bar shape. The upper beam 21 and the lower beam 22 extend horizontally and are parallel to each other. The two side beams 23 extend vertically. The two ends of one side beam 23 are respectively connected to one end of the upper beam 21 and one end of the lower beam 22, and the two ends of the other side beam 23 are respectively connected to the other end of the upper beam 21 and the other end of the lower beam 22. The upper beam 21, the lower beam 22, and the two side beams 23 of the car frame 2 enclose an upright frame. The car frame 2 surrounds the car body 1. The lower beam 22 of the car frame 2 abuts against the surface of the bottom plate 12 facing away from the top plate 11 and is connected to the top plate 11. The two side beams 23 of the car frame 2 respectively abut the facing surfaces of the two side panels 13 and connect the two side panels 13. The upper beam 21 is located on the side of the top panel 11 facing away from the bottom panel 12. The connection between the bottom panel 12 and the lower beam 22, and between the side beams 23 and the side panels 13, can be welded, bolted, screwed, or riveted.

[0052] There are multiple car frames 2, and the number of car frames 2 is plural. The multiple car frames 2 are arranged in sequence from the front end to the rear end of the box body 1. There is an interval between two adjacent car frames 2.

[0053] Multiple guide rail assemblies 200 are provided, and the number of guide rail assemblies 200 is the same as the number of car frames 2. Each guide rail assembly 200 includes two guide rails 201. The guide rails 201 extend vertically and are disposed on opposite sides of the car 100. The guide rail assemblies 200 are disposed in a one-to-one correspondence with the car frames 2. The side beams 23 on opposite sides of each car frame 2 are slidably connected to the two guide rails 201 of the guide rail assembly 200 corresponding to that car frame 2. The side beams 23 facing away from the car body 1 are provided with grooves, and the guide rails 201 are inserted into these grooves, so that the side beams 23 can only slide along the guide rails 201.

[0054] As shown in FIG6 , the traction assembly 300 is connected to the car 100 . The traction assembly 300 is configured to drive the car 100 to slide along the guide rail 201 , thereby achieving the lifting and lowering of the car 100 .

[0055] The car frame 2 is the load-bearing structure of the car 100. The deadweight and load of the car 100 are transmitted by the car frame 2. Since there are plural car frames 2, the car frames 2 and the guide rail groups 200 are arranged in a one-to-one correspondence. Each car frame 2 slides along the guide rail group 200 corresponding to it. This type of car 100 has high structural strength and the car 100 is subjected to balanced force.

[0056] In addition, when it is necessary to increase the load capacity to modify the car 100, it is only necessary to add a car frame 2 in the middle of the box body 1 of the car 100 and add a set of guide rail groups 200 that cooperate with it. Since the added car frame 2 is located in the middle of the box body 1, it will not cause unbalanced force and weaken the force.

[0057] In an exemplary embodiment, as shown in FIG6 , the traction assembly 300 includes a plurality of car movable pulley assemblies 307 and a traction rope 309. The plurality of car movable pulley assemblies 307 are disposed below the housing 1. Each car movable pulley assembly 307 includes a plurality of car movable pulleys 3071. The car movable pulleys 3071 are rotatable about their axles. The axles of the car movable pulleys 3071 are disposed horizontally and perpendicular to the lower beam 22 of the car frame 2. Each car movable pulley assembly 307 corresponds to a car frame 2, which is connected to the axle of each car movable pulley 3071 of its corresponding car movable pulley assembly 307.

[0058] The pulling rope 309 can be a steel cable. The pulling rope 309 passes around the multiple car movable pulleys 3071 of the car movable pulley group 307. After the pulling rope 309 is tightened, it can support the car 100. The pulling rope 309 pulls the car 100 up and down.

[0059] The pulling rope 309 lifts the car 100, and the weight and load of the car 100 are transferred to the pulling rope 309 by the car frame 2 and the car movable pulley group 307. Since there are plural car frames 2, and the car frames 2 and the car movable pulley groups 307 are arranged in a one-to-one correspondence, the load of the box body 1 can be more evenly distributed to each car frame 2 and each car movable pulley group 307, and the force on the car 100 is more uniform and reasonable.

[0060] In an exemplary embodiment, the car 100 further includes a plurality of crossbeams 4. The crossbeams 4 extend in the same direction as the lower beam 22 of the car frame 2. The crossbeams 4 are disposed below the car body 1 and are connected to the car body 1. The crossbeams 4 and the car body 1 may be welded, bolted, or riveted.

[0061] The number of crossbeams 4 is the same as the number of car frames 2, and the crossbeams 4 correspond one to one with the car frames 2. Each crossbeam 4 is disposed on one side of the lower beam 22 of the corresponding car frame 2 and is spaced apart from the lower beam 22. The movable car pulley 3071 of each movable car pulley assembly 307 is disposed between the lower beam 22 of the car frame 2 corresponding to the movable car pulley assembly 307 and the corresponding crossbeam 4 of the car frame 2. One end of the axle of the movable car pulley 3071 is connected to the lower beam 22 of the car frame 2, and the other end is connected to the crossbeam 4.

[0062] The crossbeam 4 is arranged at the bottom of the box body 1 and is connected to the box body 1, which can increase the structural strength of the car 100. At the same time, the car movable pulley group 307 is fixed on the crossbeam 4 and the car frame 2. The crossbeam 4 and the car frame 2 share the force applied by the car movable pulley group 307 to the car 100, and the force applied to the car 100 is more reasonable.

[0063] In an exemplary embodiment, as shown in FIG5 , there are two crossbeams 4, two movable car pulley blocks 307, and two car frames 2. One crossbeam 4 is disposed on the side of the first lower beam 22 of the car frame 2 facing away from the second lower beam 22 of the car frame 2, and the other crossbeam 4 is disposed on the side of the second lower beam 22 of the car frame 2 facing away from the first lower beam 22 of the car frame 2. The distance between the car frame 2 near the front end of the car body 1 and the front end of the car body 1 is the same as the distance between the car frame 2 near the rear end of the car body 1 and the rear end of the car body 1.

[0064] The two cross beams 4 are respectively arranged on the opposite sides of the lower beams 22 of the two car frames 2. The two cross beams 4 are symmetrically arranged on the outsides of the two car frames 2, so that the force on the car 100 is more balanced and reasonable.

[0065] In an exemplary embodiment, each car movable pulley assembly 307 includes two car movable pulleys 3071. The two car movable pulleys 3071 are respectively arranged on opposite sides of the car body 1. The two car movable pulleys 3071 are respectively arranged on opposite sides of the car body 1 to prevent the traction rope 309 from interfering with the car 100, thereby preventing the traction rope 309 from rubbing against the sides of the car 100.

[0066] In an exemplary embodiment, the car 100 further includes a plurality of connecting beams 3. The connecting beams 3 are configured as straight bars. The connecting beams 3 are perpendicular to the upper beam 21 and the side beams 23. The plurality of connecting beams 3 connects every two adjacent car frames 2 together.

[0067] Multiple connecting beams 3 connect two adjacent car frames 2 together, which can improve the structural strength of the car frame 2, improve the synchronization of multiple car frames 2 during operation, increase the stability of the car 100 during operation, and improve the structural strength of the car 100.

[0068] In an exemplary embodiment, the connecting beam 3 is a channel steel. Channel steel has high structural strength, strong bending moment resistance, and low cost. Using channel steel to connect the car frames 2 together can further enhance the structural strength of the car 100.

[0069] In an exemplary embodiment, as shown in Figure 4 , the plurality of connecting beams 3 include a first connecting beam 31 and a second connecting beam 32. Multiple first connecting beams 31 are provided, each disposed on the side of the upper beam 21 facing away from the elevator car body 1 , and arranged sequentially along the extension direction of the upper beam 21. The ends of the first connecting beam 31 are respectively connected to the upper beams 21 of two adjacent car frames 2. The ends of the first connecting beam 31 can be screwed, riveted, or welded to the upper beam 21.

[0070] Multiple second connecting beams 32 are provided. Each of the second connecting beams 32 is disposed on the side of the upper beam 21 facing the elevator car body 1 and is arranged sequentially along the extension direction of the upper beam 21. The ends of the second connecting beams 32 are respectively connected to the upper beams 21 of two adjacent car frames 2. The ends of the second connecting beams 32 can be screwed, riveted, or welded to the upper beams 21.

[0071] In this way, two adjacent upper beams 21 are connected together by multiple first connecting beams 31 and multiple second connecting beams 32. The connection between the two upper beams 21 is very strong, which improves the structural strength of the top of multiple car frames 2 and makes the car 100 more stable during operation.

[0072] In an exemplary embodiment, as shown in FIG5 , the plurality of connecting beams 3 further includes a third connecting beam 33. The third connecting beam 33 is perpendicular to the side beams 23 of the car frame 2. The third connecting beam 33 is disposed between two adjacent side beams 23 located on the same side of the car body 1, and the ends of the third connecting beam 33 are respectively connected to the two adjacent side beams 23. The ends of the third connecting beam 33 may be screwed, riveted, or welded to the side beams 23.

[0073] In this way, the third connecting beam 33 can connect two adjacent side beams 23 together. The connection between the two side beams 23 is very strong, which enhances the structural strength of the side portions of the multiple car frames 2 and makes the car 100 more stable during operation.

[0074] In one exemplary embodiment, a plurality of columns 14 are provided on the outer side of the housing 1. The columns 14 are arranged vertically. The plurality of columns 14 are respectively provided on the outer sides of the side panels 13 of the housing 1. The columns 14 are connected to the side panels 13 of the housing 1. The columns 14 can enhance the structural strength of the housing 1. The columns 14 can be provided at opposite ends of the side panels 13 of the housing 1.

[0075] The multiple connecting beams 3 also include a fourth connecting beam 34. The fourth connecting beam 34 is perpendicular to the side beams 23 and the columns 14. The fourth connecting beam 34 is connected to the tops of all the columns 14 on the same side of the box body 1. The fourth connecting beam 34 is also connected to all the upper beams 21. The fourth connecting beam 34 and the columns 14, and the fourth connecting beam 34 and the upper beam 21 can be connected by screws, rivets, or welding.

[0076] The fourth connecting beam 34 connects the columns 14 and all the upper beams 21 located on the same side of the box body 1, which can further strengthen the structural strength of the box body 1 and the car frame 2 and improve the stability of the car 100 during operation.

[0077] In an exemplary embodiment, as shown in FIG2 , the elevator 10 further includes a main beam 400 and a secondary beam 500. The main beam 400 and the secondary beam 500 may be fixed to a building. The main beam 400 may be positioned above the guide rail 201 on one side of the car 100, and the secondary beam 500 may be positioned above the guide rail 201 on the other side of the car 100. The main beam 400 and the secondary beam 500 may be parallel to each other.

[0078] The traction assembly 300 also includes a counterweight fixed pulley assembly 304, a counterweight 308, a traction machine 305, a fixing device 303, a counterweight movable pulley assembly 306, and a car fixed pulley assembly 302. The counterweight fixed pulley assembly 304 is mounted on the main beam 400 and includes a counterweight fixed pulley 3041. The axle of the counterweight fixed pulley 3041 is horizontally disposed. The counterweight fixed pulley 3041 is rotatable about its axle.

[0079] The counterweight 308 is disposed below the counterweight fixed pulley assembly 304. The counterweight 308 includes a counterweight frame 3082 and a counterweight block 3081. Multiple counterweight blocks 3081 are provided, each of which is disposed within the counterweight frame 3082. The counterweight blocks 3081 can be configured in a plate shape, with multiple counterweight blocks 3081 stacked one on top of the other.

[0080] The counterweight movable pulley assembly 306 is provided with two counterweight movable pulleys 3061, both of which are arranged at the top of the counterweight frame 3082. The axles of the counterweight movable pulleys 3061 are arranged horizontally and parallel to the axles of the counterweight fixed pulley 3041. The counterweight movable pulleys 3061 can rotate around their own axles.

[0081] The traction machine 305 is arranged on the main beam 400. The traction machine 305 is located on one side of the counterweight fixed pulley group 304. The traction machine 305 is provided with a traction wheel 3051. The axis of the traction wheel 3051 is arranged horizontally, and the wheel axle of the traction wheel 3051 is perpendicular to the wheel axle of the counterweight fixed pulley 3041.

[0082] The fixing device 303 can be a rope end plate. The fixing device 303 is fixed to the main beam 400. The fixing device 303 and the main beam 400 can be welded, bolted or riveted. The fixing device 303 is configured to fix the opposite ends of the towing rope 309.

[0083] The car fixed pulley assembly 302 is arranged on the secondary beam 500. The car fixed pulley assembly 302 includes a plurality of car fixed pulleys 3021. Two car fixed pulleys 3021 can be provided. The two car fixed pulleys 3021 are spaced apart. The car fixed pulleys 3021 can rotate around their axles.

[0084] One end of the pulling rope 309 is connected to the fixing device 303, and the other end passes through the counterweight movable pulley group 306, the counterweight fixed pulley group 304, the pulling wheel 3051, a group of car movable pulley groups 307, the car fixed pulley group 302, and another group of car movable pulley groups 307 and is connected to the fixing device 303.

[0085] In this embodiment, as shown in Figure 6, one end of the pulling rope 309 is connected to the fixing device 303, and the other end thereof first passes around a counterweight movable pulley 3061, then passes around a counterweight fixed pulley 3041, then passes around another counterweight movable pulley 3061, then passes around the pulling wheel 3051, then passes around the two car movable pulleys 3071 of the first set of car movable pulleys 307, then passes around the two car fixed pulleys 3021, then passes around the two car movable pulleys 3071 of the second set of car movable pulleys 307, and finally is connected to the fixing device 303.

[0086] Therefore, the traction ratio of the elevator 10 is 4:1, and the traction assembly 300 has a simple and compact structure and a high load-bearing capacity.

[0087] In the description of this application, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "relative", "four corners", "periphery", ""mouth"-shaped structure", etc., indicating the orientation or position relationship, are based on the orientation or position 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 structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0088] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "assembly" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection. The terms "installation", "connection", and "fixed connection" can refer to direct connection, indirect connection through an intermediate medium, or internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0089] Although the embodiments disclosed in this application are as described above, the contents described are merely embodiments adopted to facilitate understanding of this application and are not intended to limit this application. Any person skilled in the art to which this application belongs may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application shall still be defined by the attached claims.

Claims

1. An elevator with high structural strength, wherein: include: A car, comprising a box body and a plurality of car frames connected to the box body, wherein the car frames are constructed as upright frames, surround the box body, and the number of the car frames is plural; a plurality of guide rail groups, including two guide rails extending vertically and disposed on opposite sides of the car, the guide rail groups corresponding to the car frames one-to-one, and the opposite sides of each car frame being slidably connected to the two guide rails of the guide rail group corresponding to the car frame; and The traction assembly is configured to drive the car to slide along the guide rail.

2. The elevator according to claim 1, wherein The pulling assembly includes a pulling rope and a plurality of car movable pulley groups arranged below the box body; The car movable pulley groups are arranged in a one-to-one correspondence with the car frames, the car frames are connected to the corresponding car movable pulley groups, and the pulling ropes pass around a plurality of car movable pulley groups to carry the car.

3. The elevator according to claim 2, wherein: The car further comprises a plurality of cross beams arranged below the box body, the cross beams being arranged in one-to-one correspondence with the car frame; The crossbeam is arranged on one side of the car frame corresponding to it, and each of the car movable pulley groups is arranged between the car frame corresponding to it and the crossbeam corresponding to the car frame, and is connected to the crossbeam.

4. The elevator according to claim 3, wherein: The number of the car frame, the cross beam and the car movable pulley group is two, and the two cross beams are respectively arranged on the opposite sides of the two car frames.

5. The elevator according to any one of claims 1 to 4, wherein: The car further comprises a plurality of connecting beams, and every two adjacent car frames are connected by the plurality of connecting beams.

6. The elevator according to claim 5, wherein: The car frame includes an upper beam located above the box body; The plurality of connecting beams include a first connecting beam and a second connecting beam both perpendicular to the upper beam; The first connecting beam is arranged on a side of the upper beam facing away from the box body, and its two ends are respectively connected to the upper beams of two adjacent car frames; The second connecting beam is arranged on a side of the upper beam facing the box body, and both ends are respectively connected to the upper beams of two adjacent car frames.

7. The elevator according to claim 5, wherein: The car frame includes a side beam located on one side of the box body; The plurality of connecting beams include a third connecting beam perpendicular to the side beams; Both ends of the third connecting beam are respectively connected to the side beams of two adjacent car frames.

8. The elevator according to claim 5, wherein: The connecting beam is a channel steel.

9. The elevator according to any one of claims 2 to 4, wherein: The pulling ratio of the elevator is set to 4:

1.

10. The elevator according to claim 9, wherein: The elevator further comprises: a main beam, disposed above the guide rail on one side of the car; and a follower beam disposed above the guide rail on the other side of the car; The pulling assembly further comprises: a counterweight pulley assembly, arranged on the main beam; a counterweight, disposed below the counterweight fixed pulley block; a counterweight movable pulley block connected to the counterweight; A traction machine is arranged on the main beam and is provided with a traction wheel; A fixing device, arranged on the main beam; a fixed pulley assembly for the car, arranged on the secondary beam; and Among them, one end of the traction rope is connected to the fixing device, and the other end is passed around the heavy movable pulley group, the counterweight fixed pulley group, the traction wheel, a group of the car movable pulley group, the car fixed pulley group, and another group of the car movable pulley group and connected to the fixing device.

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