Symmetrically distributed elevator car frame structure with balanced stress

Abstract

The invention discloses a symmetrically-distributed elevator car frame structure with balanced stress. Belongs to the technical field of elevator car frame structures, can directly transfer lifting force to a guide shoe mounting position through symmetrically distributed bearing assemblies so as to remarkably improve the stress state of vertical beams, and comprises a frame composed of an upper beam, a lower beam, a left side vertical beam and a right side vertical beam. The upper beam and the lower beam are each of a distributed bearing structure. The upper beam is provided with a first middle main bearing beam located on the central axis and first side bearing beams symmetrically arranged on the two sides of the first middle main bearing beam. The lower beam is provided with a second middle main spandrel girder located on the central axis and second side spandrel girders symmetrically arranged on the two sides of the second middle main spandrel girder. The frame is provided with symmetrically-arranged bearing assemblies which are located at the ends of the first side bearing beam and the second side bearing beam correspondingly. Each bearing assembly comprises a suspension module fixed to the lower end of the first side bearing beam, a guide shoe installation module fixed to the upper end of the second side bearing beam and a bearing pull rod arranged between the suspension module and the guide shoe installation module, and the upper end and the lower end of the bearing pull rod are hinged to the suspension module and the guide shoe installation module respectively. The upper ends of the left vertical beam and the right vertical beam are fixedly connected with the first middle main bearing beam and the second middle main bearing beam respectively.

Description

Technical Field

[0001] This invention relates to the field of elevator car frame structure technology, specifically a symmetrical distributed elevator car frame structure with balanced forces. Background Technology

[0002] The elevator car frame is the core load-bearing component of the elevator car, and its structural design directly affects the elevator's load-bearing capacity, operational stability, safety, reliability, and service life. An ideal car frame structure should possess characteristics such as high rigidity, lightweight, balanced stress distribution, and ease of installation and maintenance. Traditional elevator car frames often adopt an integral rectangular frame structure composed of a top beam, a bottom beam, and two side vertical beams. The car body is fixed within this frame, and the tension of the hoisting wire rope typically acts on the middle or sides of the top beam, and is transmitted to the bottom beam and guide shoes through the top beam and vertical beams. In this structure, both the vertical load of the car (its own weight and the load) and the tension of the hoisting wire rope ultimately need to be transmitted downwards through the side vertical beams. This results in the vertical beams simultaneously bearing enormous combined compressive and bending stresses, making them prone to deformation, and the force flow path is long with low transmission efficiency. To meet strength and rigidity requirements, it is often necessary to increase the cross-sectional dimensions of the vertical beams or use high-strength materials, increasing manufacturing costs and the total weight of the car frame.

[0003] Therefore, it is urgent to develop a symmetrical distributed elevator car frame structure with balanced forces to solve the problems in the existing technology. Summary of the Invention

[0004] The purpose of this invention is to provide a symmetrically distributed elevator car frame structure with balanced force, which can directly transmit the lifting force to the guide shoe installation position through symmetrically distributed load-bearing components, thereby significantly improving the stress state of the vertical beams, and the structure is simple, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A symmetrical distributed elevator car frame structure with balanced forces is characterized in that it comprises a frame consisting of an upper beam, a lower beam, a left vertical beam, and a right vertical beam fixedly connected together; both the upper beam and the lower beam adopt a distributed load-bearing structure, and the upper beam includes a first central main load-bearing beam located on the central axis of the frame and a first side load-bearing beam symmetrically fixedly connected to both sides of the first central main load-bearing beam. The lower beam includes: a second central main load-bearing beam located on the central axis of the frame, and a second side load-bearing beam symmetrically and fixedly connected to both sides of the second central main load-bearing beam; The car frame structure also includes symmetrically arranged load-bearing components, which are respectively disposed at the ends of the first side load-bearing beam and the second side load-bearing beam. Each load-bearing component includes: A suspension module, which is fixedly connected to the lower end of the first side load-bearing beam; A guide shoe mounting module is fixedly connected to the upper end of the second side load-bearing beam; A load-bearing tie rod is provided between the suspension module and the guide shoe mounting module, and the upper and lower ends of the load-bearing tie rod are respectively hinged to the suspension module and the guide shoe mounting module; The upper ends of the left and right vertical beams are fixedly connected to the first central main load-bearing beam, and the lower ends of the left and right vertical beams are fixedly connected to the second central main load-bearing beam.

[0006] By adopting the above technical solution, the transmission paths of lifting force and car load are separated. The tension of the lifting wire rope is directly transmitted to the guide shoe mounting module and acts on the guide rail through the suspension module and load-bearing tie rod, forming an independent closed force flow. The two side beams mainly bear the vertical static load of the car, and their stress state is simplified, thereby improving the rigidity and stability of the overall structure.

[0007] As a further embodiment of the present invention: the suspension module includes: a vertical connecting plate fixedly connected to the first side load-bearing beam, and a suspension plate perpendicularly connected to the bottom of the vertical connecting plate and fixedly connected thereto, wherein the suspension plate is provided with a first hinge hole for connecting the load-bearing tie rod.

[0008] By adopting the above technical solution, reliable transmission of lifting force from the side of the upper beam to the load-bearing tie rod is achieved. The vertical connecting plate provides a rigid connection, and the suspension plate provides a hinge point for the load-bearing tie rod, resulting in a compact structure.

[0009] As a further embodiment of the present invention: the guide shoe mounting module is L-shaped, and the guide shoe mounting module is provided with a horizontal connecting part for connecting the load-bearing tie rod. The horizontal connecting part is fixedly connected to the guide shoe mounting module, and a second hinge hole is provided on the horizontal connecting part.

[0010] By adopting the above technical solution, the guide shoe installation function and force transmission function are integrated into one unit. The horizontal connection part is used to connect the load-bearing tie rod, so that the lifting force is directly converted into the clamping force of the guide shoe on the guide rail, thereby improving the responsiveness and rigidity of the guiding system.

[0011] As a further aspect of the present invention: the upper end of the load-bearing tie rod is hinged to the first hinge hole and the second hinge hole respectively through the first pin and the second pin, and the axes of the first pin and the second pin are both perpendicular to the running direction of the elevator car.

[0012] By adopting the above technical solution, the load-bearing tie rod can rotate slightly around the pin in the direction of operation. This hinged connection method allows the tie rod to bear only axial tensile force, avoiding additional bending moment, ensuring direct force transmission, and adapting to minor deformations during installation and operation.

[0013] As a further aspect of the present invention: the first central main load-bearing beam and the first side load-bearing beam, and the second central main load-bearing beam and the second side load-bearing beam, are all fixedly connected by multiple reinforcing ribs to form a high-rigidity truss structure.

[0014] By adopting the above technical solutions, the in-plane stiffness and torsional resistance of the upper and lower beams are enhanced. The reinforcing ribs create a stable truss between the central and side load-bearing beams, ensuring that the load is evenly transferred and distributed, preventing localized deformation.

[0015] As a further embodiment of the present invention: the left and right vertical beams are box-shaped structures with several transverse partitions inside.

[0016] By adopting the above technical solutions, the self-weight is reduced while ensuring sufficient bending and compressive stiffness of the upright beams. The box-shaped cross-section, combined with internal partitions, effectively improves the stability and load-bearing efficiency of the cross-section.

[0017] As a further aspect of the present invention: the load-bearing tie rod is an adjustable telescopic rod structure, and an adjusting sleeve with positive and negative threads is provided in the middle of the rod body.

[0018] By adopting the above technical solution, it is convenient to fine-tune the levelness of the car frame and the position of the guide shoes during installation. The length of the tie rod can be changed by rotating the adjusting sleeve, thereby adjusting the frame posture and ensuring that the load-bearing components are evenly stressed.

[0019] As a further aspect of the present invention: the number of load-bearing components is four sets, symmetrically arranged on the left and right sides of the car frame in the front-rear direction.

[0020] By adopting the above technical solution, the car frame achieves symmetrical force distribution in both the front-to-back and left-to-right directions. The four sets of load-bearing components form stable force transmission points at the four corners of the car, which can effectively balance the dynamic off-center load that may occur during operation and improve the smoothness of operation.

[0021] Compared with the prior art, the beneficial effects of the present invention are: it can directly transmit the lifting force to the guide shoe installation position through symmetrically distributed load-bearing components, thereby significantly improving the stress state of the upright beam, and the structure is simple.

[0022] Other features and advantages of the present invention will be disclosed in detail in the following detailed description and accompanying drawings. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of an overall structure in one embodiment of the present invention; Figure 2 yes Figure 1 Enlarged view of point A; Figure 3 yes Figure 1 Enlarged view of point B; Figure 4 This is a cross-sectional view in an embodiment of the present invention.

[0024] The figures are labeled as follows: 1. Upper beam; 11. First central main load-bearing beam; 12. First side load-bearing beam; 2. Lower beam; 21. Second central main load-bearing beam; 22. Second side load-bearing beam; 3. Left side vertical beam; 31. Horizontal partition; 4. Right side vertical beam; 5. Suspension module; 51. Vertical connecting plate; 52. Suspension plate; 53. First hinge hole; 6. Guide shoe mounting module; 61. Horizontal connection part; 62. Second hinge hole; 7. Load-bearing tie rod; 71. First pin; 72. Second pin; 73. Adjusting sleeve; 8. Reinforcing rib plate. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In this embodiment of the invention, a symmetrical distributed elevator car frame structure with force balance is described below. Figures 1 to 3 As shown, the feature is that it includes: a frame consisting of an upper beam 1, a lower beam 2, a left vertical beam 3, and a right vertical beam 4 fixedly connected; both the upper beam 1 and the lower beam 2 adopt a distributed load-bearing structure, and the upper beam 1 includes: a first central main load-bearing beam 11 located on the central axis of the frame, and a first side load-bearing beam 12 symmetrically fixedly connected to both sides of the first central main load-bearing beam 11. The lower beam 2 includes: a second central main load-bearing beam 21 located on the central axis of the frame, and a second side load-bearing beam 22 symmetrically and fixedly connected to both sides of the second central main load-bearing beam 21; The car frame structure also includes symmetrically arranged load-bearing components, which are respectively located at the ends of the first side load-bearing beam 12 and the second side load-bearing beam 22. The load-bearing components include: Suspension module 5 is fixedly connected to the lower end of the first side load-bearing beam 12; Guide shoe mounting module 6 is fixedly connected to the upper end of the second side load-bearing beam 22; The load-bearing tie rod 7 is located between the suspension module 5 and the guide shoe mounting module 6, and its upper and lower ends are respectively hinged to the suspension module 5 and the guide shoe mounting module 6. The upper ends of the left vertical beam 3 and the right vertical beam 4 are fixedly connected to the first central main load-bearing beam 11, and the lower ends of the left vertical beam 3 and the right vertical beam 4 are fixedly connected to the second central main load-bearing beam 21.

[0027] By adopting the above technical solution, the transmission paths of lifting force and car load are separated. The tension of the lifting wire rope is directly transmitted to the guide shoe mounting module 6 through the suspension module 5 and the load-bearing tie rod 7, and acts on the guide rail, forming an independent closed force flow. The two side beams mainly bear the vertical static load of the car, and their stress state is simplified, thereby improving the rigidity and stability of the overall structure.

[0028] In this embodiment, the suspension module 5 includes: a vertical connecting plate 51 fixedly connected to the first side load-bearing beam 12, and a suspension plate 52 vertically and fixedly connected to the bottom of the vertical connecting plate 51. The suspension plate 52 is provided with a first hinge hole 53 for connecting the load-bearing tie rod 7.

[0029] By adopting the above technical solution, the lifting force is reliably transmitted from the side of the upper beam 1 to the load-bearing tie rod 7. The vertical connecting plate 51 provides a rigid connection, and the suspension plate 52 provides a hinge point for the load-bearing tie rod 7, resulting in a compact structure.

[0030] In this embodiment, the guide shoe mounting module 6 is L-shaped and has a horizontal connecting part 61 for connecting the load-bearing tie rod 7. The horizontal connecting part 61 is fixedly connected to the guide shoe mounting module 6 and has a second hinge hole 62.

[0031] By adopting the above technical solution, the guide shoe installation function and force transmission function are integrated into one. The horizontal connecting part 61 is used to connect the load-bearing tie rod 7, so that the lifting force is directly converted into the clamping force of the guide shoe on the guide rail, thereby improving the responsiveness and rigidity of the guiding system.

[0032] In this embodiment, the upper end of the load-bearing tie rod 7 is hinged to the first hinge hole 53 and the second hinge hole 62 through the first pin 71 and the second pin 72 respectively. The axes of the first pin 71 and the second pin 72 are both perpendicular to the running direction of the elevator car.

[0033] By adopting the above technical solution, the load-bearing tie rod 7 can rotate slightly around the pin in the running direction. This hinged connection method allows the tie rod to bear only axial tensile force, avoiding additional bending moment, ensuring direct force transmission, and adapting to minor deformations during installation and operation.

[0034] In this embodiment, the first central main load-bearing beam 11 and the first side load-bearing beam 12, and the second central main load-bearing beam 21 and the second side load-bearing beam 22 are all fixedly connected by multiple reinforcing ribs 8, forming a high-rigidity truss structure.

[0035] By adopting the above technical solution, the in-plane stiffness and torsional resistance of the upper beam 1 and the lower beam 2 are enhanced. The reinforcing ribs 8 form a stable truss between the middle and side load-bearing beams, ensuring that the load can be evenly transferred and distributed, and preventing local deformation.

[0036] In this embodiment, the left vertical beam 3 and the right vertical beam 4 are box-shaped structures with several transverse partitions 31 inside.

[0037] By adopting the above technical solutions, the self-weight is reduced while ensuring sufficient bending and compressive stiffness of the upright beams. The box-shaped cross-section, combined with internal partitions, effectively improves the stability and load-bearing efficiency of the cross-section.

[0038] In this embodiment, the load-bearing tie rod 7 is an adjustable telescopic rod structure, and an adjusting sleeve 73 with positive and negative threads is provided in the middle of the rod body.

[0039] By adopting the above technical solution, it is convenient to fine-tune the levelness of the car frame and the position of the guide shoes during installation. The length of the tie rod can be changed by rotating the adjusting sleeve 73, thereby adjusting the frame posture and ensuring that the load-bearing components are evenly stressed.

[0040] In this embodiment, there are four sets of load-bearing components, which are symmetrically arranged on the left and right sides of the car frame in the front-rear direction.

[0041] By adopting the above technical solution, the car frame achieves symmetrical force distribution in both the front-to-back and left-to-right directions. The four sets of load-bearing components form stable force transmission points at the four corners of the car, which can effectively balance the dynamic off-center load that may occur during operation and improve the smoothness of operation.

[0042] This invention provides a symmetrically distributed elevator car frame structure with balanced force, which can directly transmit the lifting force to the guide shoe installation position through symmetrically distributed load-bearing components, thereby significantly improving the stress state of the vertical beam. It also has a simple structure and high reliability.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A symmetrical distributed elevator car frame structure under force balance, characterized in that, include: A frame consisting of a fixed connection of an upper beam, a lower beam, a left vertical beam, and a right vertical beam; Both the upper beam and the lower beam adopt a distributed load-bearing structure. The upper beam includes: a first central main load-bearing beam located on the central axis of the frame, and a first side load-bearing beam symmetrically and fixedly connected to both sides of the first central main load-bearing beam. The lower beam includes: a second central main load-bearing beam located on the central axis of the frame, and a second side load-bearing beam symmetrically and fixedly connected to both sides of the second central main load-bearing beam; The car frame structure also includes symmetrically arranged load-bearing components, which are respectively disposed at the ends of the first side load-bearing beam and the second side load-bearing beam. Each load-bearing component includes: A suspension module, which is fixedly connected to the lower end of the first side load-bearing beam; A guide shoe mounting module is fixedly connected to the upper end of the second side load-bearing beam; A load-bearing tie rod is provided between the suspension module and the guide shoe mounting module, and the upper and lower ends of the load-bearing tie rod are respectively hinged to the suspension module and the guide shoe mounting module; The upper ends of the left and right vertical beams are fixedly connected to the first central main load-bearing beam, and the lower ends of the left and right vertical beams are fixedly connected to the second central main load-bearing beam.

2. The symmetrical distributed elevator car frame structure with force balance according to claim 1, characterized in that, The suspension module includes: a vertical connecting plate fixedly connected to the first side load-bearing beam, and a suspension plate vertically and fixedly connected to the bottom of the vertical connecting plate. The suspension plate has a first hinge hole for connecting the load-bearing tie rod.

3. The symmetrically distributed elevator car frame structure with force balance according to claim 2, characterized in that, The guide shoe mounting module is L-shaped and has a horizontal connecting part for connecting the load-bearing tie rod. The horizontal connecting part is fixedly connected to the guide shoe mounting module and has a second hinge hole.

4. The symmetrical distributed elevator car frame structure with force balance according to claim 3, characterized in that, The upper end of the load-bearing tie rod is hinged to the first hinge hole and the second hinge hole through the first pin and the second pin respectively. The axes of the first pin and the second pin are both perpendicular to the running direction of the elevator car.

5. A symmetrically distributed elevator car frame structure with force balance according to claim 1, characterized in that, The first central main load-bearing beam and the first side load-bearing beam, as well as the second central main load-bearing beam and the second side load-bearing beam, are fixedly connected by multiple reinforcing ribs to form a high-rigidity truss structure.

6. The symmetrical distributed elevator car frame structure with force balance according to claim 1, characterized in that, The left and right vertical beams are box-shaped structures with several transverse partitions inside.

7. A symmetrically distributed elevator car frame structure with force balance according to any one of claims 1-6, characterized in that, The load-bearing tie rod is an adjustable telescopic rod structure, and an adjusting sleeve with positive and negative threads is provided in the middle of the rod body.

8. A symmetrically distributed elevator car frame structure with force balance according to claim 1, characterized in that, The number of load-bearing components is four sets, symmetrically arranged on the left and right sides of the car frame in the front-rear direction.

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