Double-layer lift car structure of elevator

Abstract

The utility model discloses a double-layer car structure of an elevator. Two groups of car units are movably connected with a main car frame up and down; the linkage mechanism is used for linking the two groups of car units to be close to or far away from each other in the vertical direction; the distance adjusting mechanism is arranged on the main car frame and used for driving one set of car units to move up and down relative to the main car frame. The distance adjusting mechanism comprises a case, a pair of meshing chains and a driving mechanism; the pair of meshing chains are provided with rigid sections which are meshed with each other and formed into a whole by moving in the advancing direction, and branch sections which are separated from each other by moving in the retreating direction; one of the head of the rigid section and the case is arranged on the main car frame, and the other one is arranged on the car unit; the driving mechanism is used for driving the pair of meshing chains to synchronously advance or retreat in the advancing and retreating direction. The distance between the two groups of lift car units can be adjusted, the lift car units can be installed in a narrow space, and good adaptability to impact and vibration of the lift car units in operation is achieved.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and in particular to a double-deck elevator car structure. Background Technology

[0002] With rapid economic development and the continuous improvement of people's living standards and quality of life, the demand for various types of elevators is also constantly increasing. Elevators are gradually becoming an indispensable means of transportation and have broad prospects. Traditional elevator systems typically consist of only one car and one counterweight, with the car and counterweight moving up and down within the shaft driven by a traction machine. However, with the continuous development of urban construction, elevator systems face the dual challenges of improving carrying efficiency and reducing the space occupied by the shaft. In high-rise buildings, especially in high-traffic commercial complexes, skyscrapers, or large office buildings, passenger waiting times are long. Using two cars operating simultaneously can save internal building space, significantly improve carrying efficiency, meet the needs of large numbers of people moving quickly up and down stairs, reduce waiting time, and provide convenient transportation services for passengers.

[0003] Due to factors such as the civil engineering design and specific construction of each building, the aforementioned double-decker elevators need to be able to adjust the distance between the upper and lower cars according to changes in floor height, allowing passengers to board and alight simultaneously, thereby improving elevator transportation efficiency. In existing technologies, linear drive mechanisms such as rack and pinion mechanisms, ball screw mechanisms, and hydraulic cylinders are used to drive the upper and lower cars closer together or further apart, thus adjusting the distance between the two cars. These linear drive mechanisms require a large installation space, making them difficult to arrange in confined spaces. Furthermore, because the car experiences vibration and impact during operation, these linear drive mechanisms suffer from poor impact and vibration resistance, resulting in a short service life. Utility Model Content

[0004] To address the aforementioned technical problems, the purpose of this utility model is to propose a double-layer car structure for an elevator, which can adjust the distance between the upper and lower car units and can be installed in a confined space. It also has good adaptability to the impact and vibration of the car units during operation, effectively meeting the requirement of strong adaptability in elevator operation.

[0005] The technical solution of this utility model is achieved as follows: a double-layer car structure for an elevator, including a main car frame, a car unit, a linkage mechanism, and a spacing adjustment mechanism;

[0006] The two sets of car units are arranged vertically at intervals and are both movably connected to the main car frame.

[0007] The linkage mechanism is mounted on the main car frame and is used to link the two sets of car units to move closer or further apart in the vertical direction.

[0008] The spacing adjustment mechanism is mounted on the main car frame and is used to drive one group of car units to move up and down relative to the main car frame.

[0009] The spacing adjustment mechanism includes a housing, a pair of meshing chains, and a drive mechanism;

[0010] A pair of said meshing chains have rigid segments that mesh with each other and form a single unit by moving in the direction of travel, and branch segments that separate from each other by moving in the direction of retreat.

[0011] The forked section is wound inside the chassis and moves in coordination with the chassis along the forward and backward direction of the meshing chain;

[0012] Of the rigid section head and the chassis, one is located on the main car frame and the other is located on the car unit.

[0013] The drive mechanism is mounted on the chassis and arranged in a corresponding rigid section; the drive mechanism is connected to at least one set of meshing chains to drive a pair of meshing chains to move forward or backward synchronously in the forward and backward directions.

[0014] Furthermore, the linkage mechanism is located between the two car units and includes a hinge group and a connecting rod; the hinge group is X-shaped and includes two hinge rods that are arranged to cross each other and hinged to each other at the middle position; the hinge position of the two hinge rods of the hinge group is formed on the main car frame.

[0015] Each car unit and the hinge group are provided with two connecting rods; the first end of the two connecting rods is hinged to the two hinge rods of the hinge group, and the second end is hinged to the car unit on the corresponding side.

[0016] Furthermore, the chassis is provided with guide rails for each forked segment of the meshing chain; the guide rails have an extension path extending along the forward and backward direction of the meshing chain; the forked segments are slidably disposed on the guide rails.

[0017] Furthermore, the meshing chain includes several sets of alternately hinged inner and outer links; each outer and inner link includes two chain plates arranged side by side; each chain plate has a protrusion extending along the width direction of the chain plate; one side of the protrusion in the length direction of the chain plate has teeth, and a tooth groove is formed between adjacent teeth on the protrusion; when a pair of meshing chains are meshing, the protrusions on the outer links of the pair of meshing chains are arranged alternately and intermittently to form a clearance fit, and the teeth and tooth grooves on two adjacent protrusions mesh; and when a pair of meshing chains are meshing, the protrusions on the inner links of the pair of meshing chains are arranged alternately and intermittently to form a clearance fit, and the teeth and tooth grooves on two adjacent protrusions mesh.

[0018] Furthermore, the two chain plates of the inner link are located between the two chain plates of the outer link; the outer link also includes a pin connecting the beginning and end of the two chain plates; the inner link also includes a bushing connecting the beginning and end of the two chain plates; the bushing is sleeved with the adjacent pin.

[0019] Furthermore, the drive mechanism includes a sprocket and a driver for driving the sprocket to rotate; the sprocket is engaged with a meshing chain drive.

[0020] Furthermore, the main car frame includes a central beam; two sets of car units are arranged on the upper and lower sides of the central beam; and the spacing adjustment mechanism is disposed on the central beam.

[0021] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0022] 1. This utility model utilizes a linkage mechanism and a spacing adjustment mechanism. The linkage mechanism enables two sets of car units to move synchronously closer or further apart in the vertical direction. The spacing adjustment mechanism drives a pair of meshing chains forward and backward, thereby moving one set of car units vertically and adjusting the vertical distance between the two sets of car units. The meshing chains are housed in the chassis by winding, saving installation space and allowing installation in confined spaces, thus offering strong adaptability. The rigid segment formed by the meshing chains can withstand significant impact forces, and based on its structural characteristics, it exhibits good adaptability to vibrations and impacts of the car units during operation, effectively meeting the elevator's operational resilience requirements.

[0023] 2. This utility model, by machining protrusions on the chain plate and machining teeth and grooves on the protrusions, allows the inner and outer links of the meshing chains to alternately arrange their protrusions when a pair of meshing chains are engaged, with the corresponding teeth and grooves meshing with each other. This method makes the meshing chains more secure after engagement, less prone to separation, and the rigid segment formed by the meshing can withstand loads in both vertical and horizontal directions, exhibiting excellent impact and vibration resistance, and strong practicality. Attached Figure Description

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure in which the spacing adjustment mechanism is located below the car unit;

[0027] Figure 3 for Figure 1 A schematic diagram of the structure in which the spacing adjustment mechanism is located above the car unit;

[0028] Figure 4 This is a schematic diagram of the linkage mechanism of this utility model;

[0029] Figure 5 This is a schematic diagram of the spacing adjustment mechanism of this utility model;

[0030] Figure 6 for Figure 5 A schematic diagram of the meshing chain structure in the diagram;

[0031] Figure 7 This is a schematic diagram showing the connection between the outer and inner links of a meshing chain.

[0032] The components are as follows: 1. Main car frame; 11. Upper beam; 12. Middle beam; 13. Lower beam; 2. Car unit; 3. Linkage mechanism; 31. Hinge assembly; 32. Hinge rod; 33. Connecting rod; 4. Spacing adjustment mechanism; 5. Chassis; 51. Guide rail; 6. Meshing chain; 61. Rigid section; 62. Forked section; 63. Outer link; 64. Inner link; 65. Chain plate; 66. Protrusion; 661. Tooth; 662. Tooth groove; 67. Pin; 68. Sleeve; 7. Sprocket. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0034] like Figure 1-7 The diagram illustrates a double-deck elevator car structure according to this embodiment. This double-deck car structure is installed in the elevator shaft and moves vertically within the shaft. The double-deck car structure includes a main car frame 1, car units 2, a linkage mechanism 3, and a spacing adjustment mechanism 4. The main car frame 1 is arranged in the elevator shaft and can move vertically within it. Four sets of slide rails are installed on the main car frame 1. Two sets of car units 2 are arranged vertically at intervals and are slidably connected to the main car frame 1 via the four sets of slide rails. In this embodiment, the main car frame 1 is a skeleton structure, including an upper beam 11, a lower beam 13, and an intermediate beam 12 arranged between the upper beam 11 and the lower beam 13. One set of car units 2 is arranged between the upper beam 11 and the intermediate beam 12, while the other set of car units 2 is arranged between the lower beam 13 and the intermediate beam 12, thus placing the two sets of car units 2 on the upper and lower sides of the intermediate beam 12.

[0035] The aforementioned linkage mechanism 3 is installed on the main car frame 1. This linkage mechanism 3 is used to link the two sets of car units 2 to move closer or further apart in the vertical direction. Through the linkage of this linkage mechanism 3, when one set of car units 2 moves up and down, the other set of car units 2 moves in the opposite direction, thereby changing the vertical distance between the two sets of car units 2. Specifically, the linkage mechanism 3 in this embodiment includes a hinge group 31 and connecting rods 33. The hinge group 31 is X-shaped and includes two hinge rods 32 that are arranged crosswise and hinged to each other at the middle position. The hinge position of the two hinge rods 32 of the hinge group 31 is formed on the middle beam 12 of the main car frame 1. Two connecting rods 33 are respectively provided between each set of car units 2 and the hinge group 31. The two connecting rods 33 are arranged opposite each other, with the first end of the connecting rod 33 hinged to the two hinge rods 32 of the hinge group 31, and the second end hinged to the car unit 2 on the corresponding side. With the above structural design, when one set of car units 2 moves up and down, the hinge group 31 and the connecting rod 33 extend and retract as a whole, so as to drive the other set to move in the opposite direction.

[0036] The aforementioned pitch adjustment mechanism 4 is mounted on the main car frame 1 and is used to drive one set of car units 2 to move up and down relative to the main car frame 1. The pitch adjustment mechanism 4 includes a housing 5, a pair of meshing chains 6, and a drive mechanism. The meshing chains 6 have a designed length, with a portion housed in the housing 5 and another portion exposed and vertically arranged. The pair of meshing chains 6 have a rigid section 61 that meshes with each other and forms a single unit by moving in the forward direction, and a forked section 62 that separates from each other by moving in the backward direction. The rigid section 61 extends in the vertical direction, and the forked sections 62 of the two meshing chains 6 extend in opposite directions. Receiving spaces are arranged on opposite sides of the housing 5. The forked sections 62 are wound around the receiving spaces and cooperate with the housing 5 in moving along the forward and backward directions of the meshing chains 6. With the above structural design, when the meshing chain 6 moves forward, the forked end 62 of the meshing chain 6 moves out of the receiving space; when the meshing chain 6 moves backward, the forked end of the meshing chain 6 enters the receiving space. Of the aforementioned rigid section 61 and the chassis 5, one is fixed to the main car frame 1, and the other is fixed to the car unit 2. With the above structural design, when the meshing chain 6 moves forward and backward, it can drive one set of car units 2 to move up and down.

[0037] The aforementioned drive mechanism is mounted on the housing 5 and is arranged corresponding to the rigid section 61. This drive mechanism is connected to at least one set of meshing chains 6 to drive a pair of meshing chains 6 to move forward or backward synchronously in the forward and backward directions. The drive mechanism includes a sprocket 7 and a driver for rotating the sprocket 7. The driver is a motor, and the sprocket 7 is driven by the meshing chains 6. This drive mechanism between the sprocket 7 and the meshing chains 6 is common knowledge. The forward or backward speed and stroke of the meshing chains 6 are controlled by the forward and reverse rotation of the sprocket 7.

[0038] The aforementioned meshing chain 6 includes several sets of alternately hinged inner and outer links 63. Both the outer links 63 and the inner links include two chain plates 65 arranged side-by-side. A protrusion 66 extending along the width direction of the chain plate 65 (i.e., the thickness direction of the meshing chain 6) is formed on the chain plate 65. The protrusion 66 has a designed shape and size according to its actual function. Teeth 661 are machined on one side of the protrusion 66 in the length direction of the chain plate 65, and tooth grooves 662 are formed between adjacent teeth 661 on the protrusion 66. When a pair of meshing chains 6 are engaged, the protrusions 66 on the outer links 63 of the pair of meshing chains 6 are arranged alternately and at intervals to form a clearance fit, and the teeth 661 and tooth grooves 662 on adjacent protrusions 66 mesh with each other. When a pair of meshing chains 6 are engaged, the protrusions 66 on the inner links of the pair of meshing chains 6 are arranged alternately and at intervals to form a clearance fit, and the teeth 661 and tooth grooves 662 on adjacent protrusions 66 mesh with each other. The two chain plates 65 of the aforementioned inner link are located between the two chain plates 65 of the outer link 63. The outer link 63 also includes a pin 67 connecting the beginning and end ends of the two chain plates 65. The inner link also includes a bushing connecting the beginning and end ends of the two chain plates 65. The bushing is fitted with the adjacent pin 67.

[0039] In this embodiment, guide rails 51 are machined in the housing space of the chassis 5 corresponding to the forked segments 62 of each set of meshing chains 6. The guide rails 51 have an extension path extending along the forward and backward direction of the meshing chains 6. The forked segments 62 are slidably mounted on the guide rails 51 via bushings. Through the guiding engagement of the guide rails 51, the meshing chains 6 can enter and exit the chassis 5 in an orderly manner during forward and backward movement.

[0040] like Figure 1 , 2 As shown in Figures 3 and 4, the spacing adjustment mechanism 4 in this embodiment can be installed in different positions to meet space requirements. Figure 1 In the middle section, the chassis 5 is arranged on the intermediate beam 12, and the head of the rigid section 61 is fixed to the upper car unit 2. Figure 2 In the middle, the chassis 5 is fixed to the lower beam 13, and the head of the rigid section 61 is fixed to the lower car unit 2. Figure 3In the middle, the chassis 5 is fixed on the upper beam 11, and the head of the rigid section 61 is fixed to the upper car unit 2.

[0041] In practical use, the linkage mechanism 3 drives two sets of car units 2 to move synchronously closer or further apart in the vertical direction. The rotation of the sprocket 7 drives a pair of meshing chains 6 to move synchronously forward and backward. After meshing, these meshing chains 6 form a rigid section 61, which can withstand both large vertical and horizontal loads. Pushing and pulling this rigid section 61 drives one set of car units 2 to move up and down, thereby adjusting the vertical distance between the two sets of car units 2. When the pair of meshing chains 6 mesh, the protrusions 66 on the inner and outer links 63 of the meshing chains 6 are arranged alternately, and the teeth 661 and tooth grooves 662 at corresponding positions mesh with each other. This method makes the pair of meshing chains 6 more secure after meshing, less prone to separation, and the rigid section 61 formed by meshing can withstand loads in both the vertical and horizontal directions, exhibiting excellent impact and vibration resistance. The aforementioned meshing chains 6 are housed in the housing 5 by winding, thus saving installation space and enabling installation in confined spaces, demonstrating strong adaptability. The rigid segment 61 formed by the pair of meshing chains 6 during meshing can withstand significant impact forces, and based on its own structural characteristics, it has good adaptability to vibrations and impacts of the car unit 2 during operation, effectively meeting the elevator's strong operational resilience requirements.

[0042] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A double-layer car structure for an elevator, comprising a main car frame, a car unit, a linkage mechanism, and a spacing adjustment mechanism; characterized in that: The two sets of car units are arranged vertically at intervals and are both movably connected to the main car frame. The linkage mechanism is mounted on the main car frame and is used to link the two sets of car units to move closer or further apart in the vertical direction. The spacing adjustment mechanism is mounted on the main car frame and is used to drive one group of car units to move up and down relative to the main car frame. The spacing adjustment mechanism includes a housing, a pair of meshing chains, and a drive mechanism; A pair of said meshing chains have rigid segments that mesh with each other and form a single unit by moving in the direction of travel, and branch segments that separate from each other by moving in the direction of retreat. The forked section is wound inside the chassis and moves in coordination with the chassis along the forward and backward direction of the meshing chain; Of the rigid section head and the chassis, one is located on the main car frame and the other is located on the car unit. The drive mechanism is mounted on the chassis and arranged corresponding to the rigid section; the drive mechanism is connected to at least one set of meshing chains to drive a pair of meshing chains to move forward or backward synchronously in the forward and backward directions. The meshing chain includes several sets of alternately hinged inner and outer links; each outer and inner link includes two chain plates arranged side by side; each chain plate has a protrusion extending along the width direction of the chain plate; one side of the protrusion in the length direction of the chain plate has teeth, and a tooth groove is formed between adjacent teeth on the protrusion; when a pair of meshing chains are meshing, the protrusions on the outer links of the pair of meshing chains are arranged alternately and intermittently to form a clearance fit, and the teeth and tooth grooves on two adjacent protrusions mesh; and when a pair of meshing chains are meshing, the protrusions on the inner links of the pair of meshing chains are arranged alternately and intermittently to form a clearance fit, and the teeth and tooth grooves on two adjacent protrusions mesh.

2. The double-deck elevator car structure according to claim 1, characterized in that: The linkage mechanism is located between two car units and includes a hinge group and connecting rods; the hinge group is X-shaped and includes two hinge rods that are arranged to cross each other and hinged to each other at the middle position; the hinge position of the two hinge rods of the hinge group is formed on the main car frame; Each car unit and the hinge group are provided with two connecting rods; the first end of the two connecting rods is hinged to the two hinge rods of the hinge group, and the second end is hinged to the car unit on the corresponding side.

3. The double-deck elevator car structure according to claim 1, characterized in that: The chassis is equipped with guide rails for each forked segment of the meshing chain; the guide rails have an extension path extending along the forward and backward direction of the meshing chain; the forked segments are slidably mounted on the guide rails.

4. The double-deck elevator car structure according to claim 1, characterized in that: The two chain plates of the inner link are located between the two chain plates of the outer link; the outer link also includes a pin connecting the beginning and end of the two chain plates; the inner link also includes a bushing connecting the beginning and end of the two chain plates; the bushing is sleeved with the adjacent pin.

5. The double-deck elevator car structure according to claim 1, characterized in that: The drive mechanism includes a sprocket and a driver for driving the sprocket to rotate; the sprocket is engaged with a meshing chain drive.

6. The double-deck elevator car structure according to claim 1, characterized in that: The main car frame includes a middle beam; two sets of car units are arranged on the upper and lower sides of the middle beam; the spacing adjustment mechanism is disposed on the middle beam.

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