Top layer fixing part structure of machine-room-free elevator with high traction ratio and large load

Abstract

The invention relates to the related technical field of machine-room-less elevator top layer structures, and discloses a high-traction-ratio large-load machine-room-less elevator top layer fixing part structure which comprises a shaft top layer used for installing fixing parts, and a lift car side guide wheel assembly and a counterweight side assembly are oppositely arranged in the shaft top layer; the lift car side guide wheel assembly comprises a first bearing beam arranged on the top layer of the hoistway. The lift car side guide wheel assembly is arranged on the back face of the lift car guide rail, the traction machine base assembly is made to avoid the vertical projection of the lift car, the free vertical distance between the bottommost part of the shaft top and the highest part fixed to the top part of the lift car is reduced, the needed top layer space size is reduced, and cost is reduced; the direct pressure type drum brake traction machine is adopted to reduce the cost of the traction machine, meanwhile, the space utilization rate of a shaft is increased through space reconstruction, the space needed by a lift car side guide wheel assembly and a traction machine base assembly is reduced, and therefore the width size of the shaft is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field related to the top structure of a machine - room - less elevator, and in particular to a top fixing component structure for a machine - room - less elevator with a high traction ratio and large load capacity. Background Art

[0002] In the context of the accelerating urbanization process and the increasingly complex requirements of building functions, the efficient utilization of building space and technological innovation have become the core driving forces for the industry's development. The emergence of machine - room - less elevators solves the pain points of traditional machine - room elevators in building design, cost control, and sustainable development through space optimization, technological innovation, and function integration.

[0003] The core advantage of existing machine - room - less elevators lies in the extreme utilization of building space. It not only cancels the machine room to save building space but also needs to improve the utilization rate of the hoistway space itself. Especially for machine - room - less elevators with a high traction ratio and large load capacity, the utilization rate of the hoistway space itself is generally low, and the cost is high. The main factors affecting the utilization rate of the hoistway space lie in the layout and structural design of the top fixing components.

[0004] When meeting the requirements in TSG T7001 - 2023 A1.2.2.11.1, the utilization rate of the hoistway space should be improved through space reconstruction.

[0005] Most existing top fixing components of machine - room - less elevators require large hoistway width dimensions and top - floor height dimensions. In the case of the same car size, the hoistway width of the existing technology increases by 3% and the top - floor height increases by 31% compared with this solution. At the same time, the main machine base and the main machine are both arranged obliquely, which makes the installation of the main machine base difficult, the overall space utilization rate low, and the installation difficulty high. To solve such problems, a top fixing component structure for a machine - room - less elevator with a high traction ratio and large load capacity is proposed. Summary of the Invention

[0006] The present invention provides a top fixing component structure for a machine - room - less elevator with a high traction ratio and large load capacity, which solves the problems in the above - mentioned background art.

[0007] The present invention solves its technical problems by adopting the following technical solutions:

[0008] A top fixing component structure for a machine - room - less elevator with a high traction ratio and large load capacity includes a hoistway top floor for installing fixing components, and a car - side guide wheel assembly and a counterweight - side assembly are oppositely arranged in the hoistway top floor;

[0009] The car - side guide wheel assembly includes a first load - bearing beam arranged in the hoistway top floor. A plurality of guide - wheel mounting brackets are provided on the outer periphery of the load - bearing beam. The guide - wheel mounting brackets extend downward, and a guide - wheel sliding group is arranged inside the bottom. The guide - wheel sliding group is located below the load - bearing beam to reduce the required top - floor height dimension;

[0010] The outer side of the guide wheel sliding group is also provided with an anti-slip structure for preventing the guide wheel sliding group from slipping out of the wire rope groove;

[0011] The counterweight side assembly includes a second load-bearing beam arranged on the other side of the top floor of the hoistway relative to the first load-bearing beam, and the second load-bearing beam is provided with a traction machine base assembly, a counterweight side guide wheel assembly and a suspension device terminal assembly, and a vibration reduction structure for reducing vibration and noise is provided in the traction machine base assembly.

[0012] Preferably, the anti-slip structure comprises an anti-slip groove device installed on an open side of the guide wheel mounting bracket, and the anti-slip groove device is arranged in a groove shape on one side of the outer circumference of the guide wheel sliding group.

[0013] Preferably, a protective cover for protecting the guide wheel sliding group is also provided on the outer side of the guide wheel sliding group.

[0014] Preferably, the traction machine base assembly includes two lower mounting plates and an upper mounting plate which are sequentially installed from bottom to top and a traction machine unit arranged on the upper mounting plate, and the vibration reduction structure is arranged between the lower mounting plate and the upper mounting plate.

[0015] Preferably, the vibration reduction structure comprises four rubber springs which are respectively arranged at both ends of the two lower mounting plates, the four rubber springs are suspended flexible connection structures, and the force application points are distributed in a quadrilateral.

[0016] Preferably, the traction machine is a direct pressure drum brake traction machine.

[0017] Preferably, the suspension device termination device assembly includes a rope end combination, and the suspension device termination device also includes a car side termination installation device and a counterweight side termination installation device, and the force application points of the car side termination installation device and the counterweight side termination installation device are on both sides of the second load-bearing beam, so that the suspension device termination device assembly is better stressed.

[0018] The advantages and positive effects of the present invention are:

[0019] Improve the utilization rate of the top floor of the hoistway: arrange the car side guide wheel assembly on the back of the car guide rail, so that the traction machine base assembly avoids the vertical projection of the car, reduces the free vertical distance between the bottom part of the hoistway top and the highest part of the part fixed on the car top, and reduces the required top floor space size;

[0020] Reduce costs and improve the utilization of the hoistway plane: Use direct pressure drum brake traction machine to reduce the cost of the traction machine, and improve the utilization of the hoistway space through space reconstruction, reducing the space required for the car side guide wheel assembly and the traction machine base assembly, thereby reducing the width of the hoistway;

[0021] Reduce the manufacturing and installation difficulties: By reconstructing the space, solve the problems such as difficult manufacturing, installation and poor shock absorption effect caused by the inclined arrangement of the traction machine. Change the base of the traction machine with a conventional inclined arrangement into a base of the traction machine with a square arrangement, and turn it into a conventional manufacturing and installation method to reduce the manufacturing and installation difficulties.

[0022] Improve the stability and shock absorption effect of the traction machine: Adopt a floating rubber spring. Through the reasonable arrangement of the rubber spring, set the force application point of the traction machine within the geometric shape formed by the force application points of several rubber springs to improve the stability of the traction machine. The traction machine and the bearing beam are flexibly connected to improve the shock absorption effect. Brief Description of the Drawings

[0023] The present invention will be further described below with reference to the drawings and embodiments.

[0024] Figure 1 is a schematic structural diagram of the present invention;

[0025] Figure 2 is Figure 1 a specific structural schematic diagram of the traction machine base assembly in

[0026] Figure 3 is Figure 2 a schematic diagram of the distribution of the force application points of the shock absorption structure in

[0027] Figure 4 is a plan layout diagram of the hoistway of the present invention.

[0028] The reference signs in the drawings are described separately as follows:

[0029] 1. Top floor of the hoistway;

[0030] 2. Car side guide wheel assembly; 21. First bearing beam; 22. Guide wheel mounting bracket; 23. Guide wheel sliding group; 24. Anti-derailment device; 25. Protective cover;

[0031] 3. Counterweight side assembly; 31. Second bearing beam; 32. Suspension device end connection device assembly; 33. Counterweight side guide wheel assembly; 34. Traction machine base assembly; 341. Lower mounting plate; 3411. Rubber spring; 342. Upper mounting plate; 343. Direct pressure type drum brake traction machine. Detailed Description of the Invention

[0032] The present invention will now be further described in detail with reference to the drawings. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0033] The following further details the embodiments of the present invention with reference to the drawings:

[0034] Reference Figure 1 and Figure 2 as well as Figure 3 As shown, in the context of the accelerating urbanization process and the increasingly complex requirements for building functions, the efficient utilization of building space and technological innovation have become the core driving forces for the industry's development. The emergence of machine-roomless elevators has solved the pain points of traditional machine-room elevators in building design, cost control, and sustainable development through space optimization, technological innovation, and function integration.

[0035] The core advantage of existing machine-roomless elevators lies in the extreme utilization of building space. It is not only about eliminating the machine room to save building space but also about improving the utilization rate of the hoistway space itself. Especially for high-traction-ratio and large-load machine-roomless elevators, the utilization rate of the hoistway space itself is generally low, and the cost is high. The main factors affecting the utilization rate of the hoistway space are the layout and structural design of the top-floor fixed components.

[0036] When meeting the requirements in TSG T7001-2023 A1.2.2.11.1, the utilization rate of the hoistway space should be improved through space reconstruction.

[0037] Most existing top-floor fixed components of machine-roomless elevators require large hoistway width dimensions and top-floor height dimensions. In the case of the same car size, the existing technology increases the hoistway width by 3% and the top-floor height by 31% compared with this solution. At the same time, both the main machine base and the main machine are arranged obliquely, with high installation difficulty of the main machine base, low overall space utilization rate, and high installation difficulty. To solve such problems, a top-floor fixed component structure for high-traction-ratio and large-load machine-roomless elevators is proposed; it includes a hoistway top floor 1 for installing fixed components, and a car-side guide wheel assembly 2 and a counterweight-side assembly 3 are oppositely arranged in the hoistway top floor 1;

[0038] The car-side guide wheel assembly 2 includes a first load-bearing beam 21 arranged in the hoistway top floor 1, and a number of guide wheel mounting brackets 22 are provided on the outer periphery of the load-bearing beam. The guide wheel mounting brackets 22 extend downward, and a guide wheel sliding group 23 is arranged inside the bottom, and the guide wheel sliding group 23 is located below the load-bearing beam to reduce the required top-floor height dimension;

[0039] An anti-detachment structure for preventing the steel wire rope from slipping out of the guide wheel sliding group 23 is further arranged on the outer side of the guide wheel sliding group 23;

[0040] The counterweight side assembly 3 includes a second load-bearing beam 31 provided on the other side of the top floor 1 of the hoistway relative to the first load-bearing beam 21. A traction machine base assembly 34, a counterweight side guide wheel assembly 33, and a suspension device end connection device assembly 32 are provided on the second load-bearing beam 31. A vibration damping structure for reducing vibration and noise is provided inside the traction machine base assembly 34; Improve the utilization rate of the top floor 1 of the hoistway: Arrange the car side guide wheel assembly 2 on the back of the car guide rail, avoid the vertical projection of the traction machine base assembly 34 and the car, reduce the free vertical distance between the lowest component at the top of the hoistway and the highest part of the component fixed on the car top, and reduce the required top floor space size;

[0041] Reduce costs and improve the utilization rate of the hoistway plan: Use a direct pressure drum brake traction machine 343 to reduce the cost of the traction machine. At the same time, improve the utilization rate of the hoistway space through space reconstruction, reduce the required space for the car side guide wheel assembly 2 and the traction machine base assembly 34, and thus reduce the width size of the hoistway;

[0042] Reduce the manufacturing and installation difficulties: Solve the problems of difficult manufacturing, installation, and poor shock absorption effect caused by the inclined arrangement of the traction machine through space reconstruction. Change the traction machine base with a conventional inclined arrangement to a traction machine base with a square arrangement, and become a conventional manufacturing and installation method to reduce the manufacturing and installation difficulties;

[0043] Improve the stability and shock absorption effect of the traction machine: Adopt a floating rubber spring 3411. Through the reasonable arrangement of the rubber spring 3411, set the force application point of the traction machine within the geometric shape formed by the force application points of several rubber springs 3411 to improve the stability of the traction machine. The traction machine and the load-bearing beam are flexibly connected to improve the shock absorption effect.

[0044] It should be noted that the drawbacks and deficiencies of the prior art are reflected in the following aspects: For the car-side guide wheel assembly 2, a double-bearing steel beam is adopted, which increases the space required for the car-side guide wheels. If the width space is to be reduced, the top space required in accordance with the requirements of TSG T7001-2023 A1.2.2.11.1 needs to be increased. Conversely, if the top space is reduced, the well width space will become larger. The prior art only selects a relatively moderate method between the two, which will not cause both the top space and the well width space requirements to be too large, but it cannot make the space be utilized to the extreme. In addition, the cost of the entire car-side guide wheel assembly 2 is relatively high; secondly, for the traction machine base assembly 34, the traction machine base structure has rubber springs 3411 added between two steel plate brackets, and bolts are used to penetrate and connect the main machine, the upper and lower steel plates, and the rubber springs 3411. The connection between the traction machine and the load-bearing beam is similar to a rigid connection, resulting in a poor vibration reduction effect. At the same time, the external dimensions of the lower mounting plate are relatively large, and the cost of the traction machine base is relatively high; in addition, for the structure where the traction machine base and the traction wheel are synchronously inclined, it is difficult to position the traction machine base, and the installation process difficulty increases. If the installation positioning difficulty is to be solved, the manufacturing process difficulty will also increase; while for the structure where the traction machine base and the traction wheel are synchronously arranged in parallel, the well width space will increase, and at the same time, the cost of the disc brake traction machine is much higher than that of the direct-pressure drum brake traction machine 343.

[0045] Furthermore, the car-side guide wheel assembly 2 is changed from a double-bearing beam to a single-bearing beam and is arranged on the back of the car guide rail, reducing the width dimension and the top height dimension. The key to the structure of the car-side guide wheel assembly 2 is to arrange a number of stable and reliable guide wheels on the single-bearing beam by adopting the design concept similar to that of a directional caster wheel structure.

[0046] In addition, adopting the direct-pressure drum brake traction machine 343 is the key to cost savings. By arranging the traction machine obliquely and reconstructing the structure, the space utilization rate is higher than that of the disc traction machine.

[0047] It should also be noted that the traction machine base assembly 34 includes two lower mounting plates 341 and an upper mounting plate 342 that are sequentially installed from bottom to top, and a traction machine unit arranged on the upper mounting plate 342. The vibration reduction structure is arranged between the lower mounting plate 341 and the upper mounting plate 342; the vibration reduction structure is reconstructed, and the rubber plate that rigidly connects the main machine and the load-bearing beam is changed to a suspended rubber spring 3411 with a flexible connection. Through the reasonable arrangement of the force application points of the rubber spring 3411, the stability, reliability, and vibration reduction performance of the traction machine are improved.

[0048] Furthermore, reconstructing the obliquely arranged traction machine base assembly 34 and changing the oblique arrangement to a conventional square arrangement is the key to reducing the manufacturing and installation difficulty.

[0049] It is worth mentioning that the vibration damping structure includes four rubber springs 3411 respectively arranged at both ends of the two lower mounting plates 341. The four rubber springs 3411 are of a suspended flexible connection structure, and the force application points are distributed in a quadrilateral shape.

[0050] Additionally, the suspension device end connection device assembly 32 includes a rope end assembly. The suspension device end connection device further includes a car side end connection installation device and a counterweight side end connection installation device. The force application points of the car side end connection installation device and the counterweight side end connection installation device are on both sides of the second load-bearing beam 31, so that the force on the suspension device end connection device assembly 32 is better.

[0051] A strengthening structural member is further provided at the bottom of the entire car side guide wheel assembly 2 to strengthen and stabilize the structure of the bottom of the entire car side guide wheel assembly 2.

[0052] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific embodiments. Any other embodiments obtained by those skilled in the art according to the technical solutions of the present invention also fall within the scope of protection of the present invention.

Claims

1. A structure of a top-fixing component for a high-traction-ratio and large-load machine-roomless elevator, characterized in that: It includes a hoistway top floor (1) for installing fixed components, and a car-side guide wheel assembly (2) and a counterweight-side assembly (3) are oppositely arranged in the hoistway top floor (1). The car-side guide wheel assembly (2) includes a first load-bearing beam (21) arranged in the hoistway top floor (1). A number of guide wheel mounting brackets (22) are arranged on the outer periphery of the load-bearing beam. The guide wheel mounting brackets (22) extend downward, and a guide wheel sliding group (23) is arranged inside the bottom. The guide wheel sliding group (23) is located below the load-bearing beam to reduce the required top floor height dimension. An anti-derailment structure for preventing the steel wire rope from derailing from the guide wheel sliding group (23) is also arranged on the outer side of the guide wheel sliding group (23). The counterweight-side assembly (3) includes a second load-bearing beam (31) arranged on the other side of the hoistway top floor (1) opposite to the first load-bearing beam (21). A traction machine base assembly (34), a counterweight-side guide wheel assembly (33), and a suspension device end connection device assembly (32) are arranged on the second load-bearing beam (31). A vibration damping structure for reducing vibration and noise is arranged inside the traction machine base assembly (34).

2. The structure of the top floor fixing component of a high traction ratio and large load inorganic room elevator according to claim 1, characterized in that: The anti-derailment structure includes an anti-derailment groove device (24) installed on the open side of the guide wheel mounting bracket (22). The anti-derailment groove device (24) is arranged in a groove shape on the outer periphery side of the guide wheel sliding group (23).

3. The structure of the top floor fixing component of a high traction ratio and large load non-machine room elevator according to claim 2, characterized in that: A protective cover (25) for protecting the guide wheel sliding group (23) is also arranged on the outer side of the guide wheel sliding group (23).

4. The structural component for fixing the top floor of a high traction ratio and large load non-machine room elevator according to claim 1, characterized in that: The traction machine base assembly (34) includes two lower mounting plates (341) and an upper mounting plate (342) sequentially installed from bottom to top, and a traction machine unit arranged on the upper mounting plate (342). The vibration damping structure is arranged between the lower mounting plate (341) and the upper mounting plate (342).

5. The structure of the top floor fixing component of a high traction ratio and large load non-machine room elevator according to claim 4, characterized in that: The vibration damping structure includes four rubber springs (3411) respectively arranged at both ends of the two lower mounting plates (341). The four rubber springs (3411) are of a floating flexible connection structure, and the force application points are distributed in a quadrilateral shape.

6. The structure of the top floor fixing component of a high traction ratio and large load inorganic room elevator according to claim 1, characterized in that: The traction machine unit is a direct-pressure drum brake traction machine (343).

7. The structure of the top floor fixing component of a high traction ratio and large load capacity machine-roomless elevator according to claim 1, characterized in that: The suspension device end connection device assembly (32) includes a rope socket assembly. The suspension device end connection device also includes a car-side end connection installation device and a counterweight-side end connection installation device. The force application points of the car-side end connection installation device and the counterweight-side end connection installation device are on both sides of the second load-bearing beam (31), so that the force of the suspension device end connection device assembly (32) is better.

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