Elevator for unstable platforms

Abstract

The application discloses an elevator for unstable platform, and relates to the technical field of elevators.The elevator comprises a shaft, a traction machine assembly, a car assembly and a traction steel wire rope; the shaft comprises a plurality of vertical car support steel beams; the car assembly comprises a car and a plurality of car guide shoe assemblies, the car guide shoe assemblies are arranged at the four corners of the upper and lower sides of the car, and are respectively in abutment with corresponding vertical car support steel beams; the car guide shoe assembly comprises a guide shoe base, a nylon wheel and a guide shoe limiter, the guide shoe limiter comprises a limiter base, a jack and a spring, the jack is slidingly arranged on the limiter base, the jack is fixedly connected with the guide shoe base at the end, and the spring is arranged between the guide shoe base and the limiter base; the guide rail and the guide rail support of the traditional elevator are cancelled, so that the force generated by the unstable movement of the platform directly acts on the shaft, and the stability of the elevator car operation is improved.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, and more specifically to an elevator designed for unstable platforms. Background Technology

[0002] Large unstable platforms can refer to large ships such as large ocean-going oil tankers, container ships, warships, and research vessels, or large offshore structures such as large oil drilling platforms and offshore ranches, or mobile structures such as ultra-large land-based mobile machinery that require personnel or cargo to move up and down.

[0003] When an elevator operates on a large, unstable platform (such as a ship), the platform's inherent unstable motion generates forces of uncertain direction and magnitude in a plane perpendicular to gravity. Prolonged operation under these conditions can cause deformation of the elevator's guide rails and supports, affecting the stability of the elevator car and potentially leading to serious safety accidents. Due to the unique nature of its motion, designing an elevator specifically for large, unstable platforms is essential to ensure the safety and stability of elevator operation.

[0004] Chinese Patent Publication No. 20181031860.9 discloses a marine elevator, which works by using a traveling cable tensioning device, a counterweight, and a traction mechanism to balance each other and counteract uncertain forces. Its advantages are its simple principle and low cost, but its disadvantage is that it requires significant changes to the traditional shaft structure. Summary of the Invention

[0005] To address the problem that existing elevators, when operating on large, unstable platforms, experience deformation of the elevator guide rails and supports under forces in different directions due to the platform's inherent instability, thereby jeopardizing elevator safety, this invention provides an elevator designed for unstable platforms. It eliminates the traditional elevator guide rails and supports, allowing the forces generated by the unstable movement of the car on the platform to act directly on the hoistway frame, thus improving the elevator's stability.

[0006] The present invention adopts the following technical solution: an elevator for unstable platforms, including a shaft, a traction machine assembly mounted on the top of the shaft, a car assembly disposed in the shaft, and traction steel wire ropes;

[0007] The hoistway includes several vertical car support steel beams;

[0008] The car assembly includes a car and several car guide shoe assemblies. The car guide shoe assemblies have an L-shaped structure and are located at the four corners of the upper and lower sides of the car, respectively abutting against the corresponding vertical car support steel beams.

[0009] This solution overcomes the problem of deformation in traditional elevator guide rails and supports under prolonged exposure to forces of uncertain magnitude and direction perpendicular to the plane of gravity, which can affect the stability of the elevator car. The solution improves the existing elevator shaft and car assembly to address this issue. The shaft includes four vertical car support beams, two vertical counterweight support beams, and several horizontal support beams. The car has a cubic structure, and the car guide shoe assemblies are fixedly installed at the four corners on the upper and lower sides of the car. The car guide shoe assemblies at the four corners of the car abut against the side walls of the four vertical car support beams, allowing the car assembly to slide up and down along these beams. The structure of the car guide shoe assembly and its distribution on the car ensure that the forces generated by unstable platform movement are directly applied to the hoistway, thereby improving the stability of the car during operation and extending the overall service life of the elevator. The diameter and quantity of the traction steel wire rope are determined by factors such as elevator load and operating speed, and its distribution is symmetrical along a central plane perpendicular to the main shaft axis. One end of the traction steel wire rope is connected to the transverse support steel beam at the top of the hoistway, passes downward through the car assembly, continues upward through the traction machine assembly of the main unit, passes downward through the counterweight frame, and finally winds upward, with the other end fixed to the transverse support steel beam at the top of the hoistway on the other side.

[0010] Preferably, the car guide shoe assembly includes two guide shoe seats vertically intersecting on the car, several nylon wheels rotatably mounted on the guide shoe seats, and two guide shoe limiters. Each guide shoe limiter includes a limiter base, a push rod, and a spring. The limiter base is fixedly mounted on the car, the push rod is slidably mounted on the limiter base, the end of the push rod is fixedly connected to the guide shoe seat, and the spring is disposed between the guide shoe seat and the limiter base. Each guide shoe seat has two rotating shafts, and a nylon wheel is mounted on the rotating shaft. When the car guide shoe assembly abuts against the side wall of the vertical car support steel beam, all four nylon wheels abut against the side wall simultaneously. The guide shoe limiter base is fixedly installed on the car, and the spring is sleeved on the outside of the top rod, which acts as a guide. Under the elastic force of the spring supported by the limiter base, the nylon wheels on the guide shoe seat are always pressed tightly against the side wall of the vertical beam. This guide shoe limiter structure makes the connection between the car and the vertical beam in the hoistway tighter, improving the stability of the elevator car operation.

[0011] Preferably, the traction machine assembly includes a support frame, a traction machine, several traction sheaves, and a traction machine extension shaft. The traction machine is mounted on the support frame, the traction machine extension shaft is mounted on the traction machine main shaft, and the traction sheaves are mounted on the traction machine extension shaft. There are two traction sheaves in total. Traction sheave support assemblies are fixed on the support frames on both sides of the traction machine. The traction sheave support assemblies and the traction sheaves thereon are rigidly fixed to the transverse support steel beam at the top of the shaft by welding or bolting. The traction machine extension shafts are installed on both sides of the traction machine main shaft and connected to the traction sheaves on both sides. The traction machine extension shafts connect the traction machine main shaft and the traction sheaves together by bolts or splines to prevent relative sliding.

[0012] Preferably, the car includes a top frame, a bottom frame, and a straight beam assembly disposed between the top frame and the bottom frame. A plurality of bottom wheel assemblies are provided on the underside of the bottom frame. The aforementioned bottom wheel assemblies are mounted on the bottom frame and symmetrically distributed along the center plane of the car. The aforementioned car guide shoe assemblies are respectively installed at the four corners of the top frame and the bottom frame, totaling eight.

[0013] The straight beam assembly includes a straight beam and a guard plate disposed on the straight beam. A hollow cavity is provided between the straight beam and the guard plate, and several guide wheels are provided at both ends of the hollow cavity. There are four straight beam assemblies in total, and eight guide wheels are installed at both ends of each straight beam assembly.

[0014] Preferably, the counterweight frame includes a counterweight frame assembly, a counterweight block, a plurality of counterweight guide shoe assemblies, and a plurality of counterweight wheel assemblies. The counterweight block is disposed within the counterweight frame assembly, the counterweight guide shoe assemblies are disposed on the two side walls of the counterweight frame assembly, and the counterweight wheel assemblies are disposed on the crossbeam of the counterweight frame assembly.

[0015] Preferably, the counterweight guide shoe assembly includes a U-shaped counterweight guide shoe shell, with a plurality of nylon wheels on the inner wall of the shell. The shell includes a counterweight guide shoe base and outer shells disposed on both sides of the base, with a pivot shaft between the outer shells. The nylon wheels are mounted on the pivot shaft. Two vertical counterweight support beams are provided within the shaft, and the counterweight guide shoe assembly is positioned between these beams and connected to them.

[0016] Preferably, the counterweight wheel assembly includes a counterweight wheel support and a counterweight wheel disposed within the counterweight wheel support frame.

[0017] Preferably, a plurality of connecting steel beams are provided between the vertical car support steel beam and the vertical counterweight support steel beam. This structure is used to increase the connection strength between the vertical car support steel beam and the vertical counterweight support steel beam.

[0018] Compared with the prior art, the beneficial effects of the present invention are: (1) Since the guide rail and guide rail support of the traditional elevator are eliminated, the force generated by the unstable movement of the car and the counterweight frame due to the platform will be directly applied to the hoistway; (2) Before entering the bottom wheel assembly, the traction steel wire rope passes through the limiting effect of the guide wheel and the straight beam assembly to prevent the steel wire rope from coming off the loop; (3) The bottom wheel assembly, traction wheel and counterweight wheel assembly are symmetrically distributed to balance the forces. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an elevator designed for an unstable platform.

[0020] Figure 2 This is a schematic diagram of an elevator traction machine section designed for an unstable platform.

[0021] Figure 3 This is a schematic diagram of an elevator car section designed for an unstable platform.

[0022] Figure 4 This is a schematic diagram of an elevator counterweight section designed for an unstable platform.

[0023] Figure 5 , 6 This is a schematic diagram of an elevator car guide shoe assembly for an unstable platform.

[0024] Figure 7 This is a schematic diagram of an elevator counterweight guide shoe assembly for an unstable platform.

[0025] In the diagram: Traction machine assembly 1, Traction machine 1.1, Traction sheave 1.2, Traction sheave support assembly 1.3, Traction machine extension shaft 1.4, Hoistway 2, Vertical car support steel beam 2.1, Vertical counterweight frame support steel beam 2.2, Horizontal support steel beam 2.3, Connecting steel beam 2.4, Car assembly 3, Car 3.1, Car top frame 3.2, Car bottom frame 3.3, Straight beam assembly 3.4, Car bottom wheel assembly 3.5, Guide wheel 3.6, Car guide shoe assembly 3.7, Car guide shoe outer shell 3. 7.1 Car guide shoe base 3.7.2 Nylon wheel one 3.7.3 Rotating shaft one 3.7.4 Guide shoe limiter 3.7.5 Limiter base 3.7.6 Top rod 3.7.7 Spring 3.7.8 Counterweight frame 4 Counterweight frame assembly 4.1 Counterweight block 4.2 Counterweight guide shoe assembly 4.3 Counterweight guide shoe shell 4.3.1 Counterweight guide shoe base 4.3.2 Nylon wheel two 4.3.3 Wheel axle two 4.3.4 Counterweight wheel assembly 4.4 Traction steel wire rope 5. Detailed Implementation

[0026] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0027] The technical solution of the invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0028] Example 1: An elevator for an unstable platform (see appendix) Figure 1-7 The main improvements to the existing elevators are as follows: traction machine assembly 1, hoistway 2, car assembly 3, counterweight frame 4, and traction steel wire rope 5.

[0029] The aforementioned traction machine assembly 1 is mounted on top of the hoistway 2 and includes a traction machine 1.1, a traction sheave 1.2, a traction sheave support assembly 1.3, and a traction machine extension shaft 1.4. The aforementioned hoistway 2 includes four vertical car support steel beams 2.1, two vertical counterweight frame support steel beams 2.2, and several horizontal support steel beams 2.3. The aforementioned car assembly 1 includes a car 3.1, a car top frame 3.2, a car bottom frame 3.3, a straight beam assembly 3.4, a car bottom wheel assembly 3.5, guide wheels 3.6, and a car guide shoe assembly 3.7. The aforementioned counterweight frame 4 includes a counterweight frame assembly 4.1, counterweight blocks 4.2, four counterweight guide shoe assemblies 4.3, and two counterweight sheave assemblies 4.4. The diameter and number of the aforementioned traction steel wire ropes 5 are determined by factors such as elevator load and operating speed, and their distribution is symmetrical along a central plane perpendicular to the main shaft axis.

[0030] The aforementioned traction machine 1.1 has extension shafts 1.4 mounted on both sides of its main shaft, extending to connect with the traction sheaves 1.2 on both sides. The aforementioned car bottom wheel assembly 3.5 is mounted on the car bottom frame 3.3 and symmetrically distributed along the car's center plane. The straight beam assembly is located between the car top frame and the car bottom frame. The straight beam assembly includes a straight beam and a guard plate mounted on the straight beam. A hollow cavity runs vertically through the straight beam and guard plate. Several guide wheels 3.6 are installed within the hollow cavity. There are four straight beam assemblies and eight guide wheels, respectively mounted at both ends of the hollow cavities within each straight beam and guard plate. The aforementioned car guide shoe assemblies 3.7 are mounted at the four corners of the car top frame 3.2 and the car bottom frame 3.3, totaling eight. The aforementioned car 3.1 rests on the car bottom frame 3.5. The aforementioned car guide shoe assembly 3.7 includes two guide shoe seats vertically intersecting on the car 3.1, a plurality of wheel axles 3.7.4, nylon wheels 3.7.3 mounted on the rotating shafts 3.7.4, and two guide shoe limiters 3.7.5. The guide shoe seat includes a car guide shoe housing 3.7.1 and a car guide shoe base 3.7.2 mounted inside the car guide shoe housing 3.7.1. The two rotating shafts 3.7.4 are rotatably mounted on the car guide shoe base 3.7.2. The aforementioned guide shoe limiter 3.7.5 includes a limiter base 3.7.6, a top rod 3.7.7, and a spring 3.7.8. When the car guide shoe assembly 3.7 abuts against the side wall of the vertical car support steel beam 2.1, all four nylon wheels 3.7.3 simultaneously abut against the side wall. The guide shoe limiter base 3.7.6 is fixedly installed on the car 3.1. The spring 3.7.8 is sleeved on the outside of the top rod 3.7.7, which serves as a guide. Under the elastic force of the spring 3.7.8, the top rod ensures that the nylon wheels 3.7.3 are always in close contact with the side wall of the vertical car support steel beam 2.1. This guide shoe limiter 3.7.5 structure allows for a tighter connection between the car 3.1 and the vertical car support steel beam 2.1 in the hoistway 2, improving the stability of the elevator car operation.

[0031] The aforementioned counterweight guide shoe assembly 4.3 includes a counterweight guide shoe housing with a "U"-shaped structure. The counterweight guide shoe housing includes a counterweight guide shoe base 4.3.2, counterweight guide shoe outer shells 4.3.1 disposed on both sides of the counterweight guide shoe base 4.3.2, a second nylon wheel 4.3.3, and a second wheel axle 4.3.4. A second wheel axle 4.3.4 is provided between the two counterweight guide shoe outer shells 4.3.1, and the second nylon wheel 4.3.3 is mounted on the second wheel axle 4.3.4. Two vertical counterweight frame support steel beams 2.2 are provided within the shaft 2, and the counterweight guide shoe assembly 4.3 is disposed between the two vertical counterweight frame support steel beams 2.2 and connected via the counterweight guide shoe assembly 4.3.

[0032] The aforementioned wire rope 5 is connected at one end to the transverse support steel beam 2.3 at the top of the hoistway 2, passes downward through the guide wheel 3.6 on the car top frame 3.2, continues downward through the space inside the straight beam assembly 3.4, passes downward through the guide wheel 3.6 on the car bottom frame 3.3, passes two car bottom wheels 3.5, then passes the guide wheel 3.6 on the other side of the car 3.1, the hollow cavity inside the straight beam assembly 3.4, continues upward through the traction wheel 1.2 of the main unit, passes downward through the counterweight wheel assembly 4.4, and finally winds upward, with the other end fixed to the transverse support steel beam 2.3 at the top of the hoistway 2 on the other side.

[0033] The traction machine 1.1, traction sheave support assembly 1.3, and traction sheave 1.2 in the aforementioned traction machine assembly 1 are rigidly fixed to the transverse support steel beam 2.3 at the top of the shaft 2 by welding or bolting. The aforementioned traction machine extension shaft 1.4 connects the main shaft of the traction machine 1.1 to the traction sheave 1.2 by bolts or splines, ensuring no relative slippage.

[0034] The aforementioned car guide shoe assembly 3.7 has an L-shaped structure and is distributed at the four corners of the car top frame 3.2 and car bottom frame 3.3, respectively supported on the four vertical car support steel beams 2.1 of the hoistway 2, allowing the car assembly 3 to slide up and down along the vertical car support steel beams 2.1; the aforementioned counterweight guide shoe assembly 4.3 has a gripping structure, with four counterweight guide shoe assemblies 4.3 symmetrically distributed on the upper and lower parts of the counterweight frame 4, and the counterweight guide shoe assemblies 4.3 at both ends of the counterweight frame 4 respectively clamp two vertical counterweight frame support steel beams 2.2, allowing the counterweight frame 4 to slide up and down along the vertical counterweight frame support steel beams 2.2; the aforementioned four vertical car support steel beams 2.1 and vertical counterweight frame support steel beams 2.2 are rigidly connected together by several transverse support steel beams 2.3, using welding or bolt fixing or other methods.

[0035] The aforementioned car top frame 3.2, car bottom frame 3.3, and straight beam assembly 3.4 are rigidly connected together by welding or bolts to form a stable, rigid whole. Their dimensions are determined based on the car body 3.1.

[0036] The car guide shoe shell 3.7.1 and the counterweight guide shoe shell 4.3.1 mentioned above are made of sheet metal bending and are rigidly fixed to the car top frame 3.2, car bottom frame 3.3 and counterweight frame assembly 4.1 by means of bolts or welding.

[0037] The aforementioned guide wheel 3.6 is tangent to the bottom wheel assembly 3.5 and is rigidly fixed to the car top frame 3.2 and the car bottom frame 3.3, respectively. The aforementioned counterweight guide shoe assembly 4.3 is rigidly fixed to the counterweight frame assembly 4.1 by welding or bolts.

[0038] Several connecting steel beams 2.4 are provided between the aforementioned vertical car support steel beam 2.1 and the vertical counterweight support steel beam 2.2.

[0039] The beneficial effect of this invention is that, since the guide rails and guide rail supports of the traditional elevator are eliminated, the force generated by the unstable movement of the car 3 and the counterweight 4 due to the platform will directly act on the hoistway 2.

[0040] Before entering the car bottom wheel assembly 3.5, the traction wire rope 5 passes through the guide wheel 3.6 and the straight beam assembly 3.4 to limit it and prevent it from coming off the loop.

[0041] The car bottom wheel assembly 3.5, traction sheave 1.2, and counterweight wheel assembly 4.4 are symmetrically distributed to balance the forces.

[0042] By combining the above solutions, we can improve the stability and safety of elevators operating on unstable platforms.

[0043] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications may be made without departing from the technical solutions described in the claims.

Claims

1. An elevator designed for an unstable platform, comprising a shaft, a traction machine assembly mounted on top of the shaft, a car assembly disposed within the shaft, a counterweight frame, and traction wire ropes, characterized in that, The hoistway includes several vertical car support steel beams; The car assembly includes a car and several car guide shoe assemblies. The car guide shoe assembly includes two guide shoe seats that are vertically intersected on the car and two guide shoe limiters. The car guide shoe assembly has an L-shaped structure and is located at the four corners of the upper and lower sides of the car, and respectively abuts against the side wall of the vertical car support steel beam. The guide shoe limiter includes a limiter base, a top rod, and a spring. The limiter base is fixedly mounted on the car, the top rod is slidably mounted on the limiter base, the end of the top rod is fixedly connected to the guide shoe seat, and the spring is disposed between the guide shoe seat and the limiter base. The car includes a car top frame and a car bottom frame. A straight beam assembly is disposed between the car top frame and the car bottom frame. The straight beam assembly includes a straight beam and a guard plate disposed on the straight beam. A hollow cavity is provided between the straight beam and the guard plate. The counterweight frame includes a counterweight frame assembly and counterweight blocks. The counterweight blocks are disposed inside the counterweight frame assembly, and the counterweight guide shoe assemblies are disposed on the two side walls of the counterweight frame assembly.

2. An elevator for an unstable platform according to claim 1, characterized in that, The car guide shoe assembly includes two guide shoe seats that are vertically intersecting on the car, several nylon wheels that are rotatably mounted on the guide shoe seats, and two guide shoe limiters.

3. An elevator for an unstable platform according to claim 1 or 2, characterized in that, The traction machine assembly includes a support frame, a traction machine, several traction wheels, and a traction machine extension shaft. The traction machine is mounted on the support frame, the traction machine extension shaft is mounted on the main shaft of the traction machine, and the traction wheels are mounted on the traction machine extension shaft.

4. An elevator for an unstable platform according to claim 3, characterized in that, The car includes a car top frame, a car bottom frame, and a straight beam assembly disposed between the car top frame and the car bottom frame. Several car bottom wheel assemblies are provided on the lower side of the car bottom frame.

5. An elevator for an unstable platform according to claim 4, characterized in that, The hollow cavity is equipped with several guide wheels.

6. An elevator for an unstable platform according to claim 1, 2, 4, or 5, characterized in that, The counterweight frame includes a counterweight frame assembly, a counterweight block, several counterweight guide shoe assemblies, and several counterweight wheel assemblies, with the counterweight wheel assemblies disposed on the upper side wall of the counterweight frame assembly.

7. An elevator for an unstable platform according to claim 6, characterized in that, The counterweight guide shoe assembly includes a counterweight guide shoe housing with a "U" shaped structure, and a plurality of nylon wheels are provided on the inner wall of the counterweight guide shoe housing.

8. An elevator for an unstable platform according to claim 6, characterized in that, The counterweight wheel assembly includes a counterweight wheel support and a counterweight wheel disposed within the counterweight wheel support.

9. An elevator for an unstable platform according to claim 1, 2, 4, 5, 7, or 8, characterized in that, Several connecting steel beams are provided between the vertical car support steel beam and the vertical counterweight support steel beam.

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