CN118908014A - Full-surrounding elevator traction suspension structure - Google Patents

Abstract

The invention relates to the technical field of elevator traction and suspension structures, and discloses a full-surrounding elevator traction and suspension structure. The invention designs the upper beam and the lower beam of the elevator car frame as the rope returning beams through the arrangement of the fully-encircling elevator traction suspension structure, adopts a fully-wrapping mode of externally-encircling two lower beam rope returning wheels with wider span and continuously internally-encircling two upper beam rope returning wheels with narrower span, realizes fully-encircling traction suspension, forms a multi-point three-dimensional supporting structure, and simultaneously installs deflection guide wheels in the free space between the rope returning wheels to limit the shaking of the traction ropes, ensures the running stability of the elevator, ensures the stress of the elevator car to be more uniform through the fully-encircling traction suspension mode, and reduces the problem of concentrated stress in a single direction. The strength of the upper beam and the lower beam is fully utilized, so that the elevator can bear larger load, and the heavy load requirement is met.

Description

A full surround elevator traction suspension structure

Technical Field

The present invention relates to the technical field related to elevator traction suspension structure, in particular to a full surround elevator traction suspension structure.

Background Art

The traditional elevator car frame structure is divided into two types based on the form of traction suspension: top-hanging type and bottom-supporting type. The top-hanging type uses an upper beam return rope device, and the bottom-supporting type uses a lower beam return rope device. Both forms are limited to traction in one direction, and almost all of the car's own weight and load are carried on the return rope beam. For lightweight passenger or freight elevators, there is no big problem, but with the increase in elevator carrying capacity in industrial plants, especially in heavy industries, this design is not very reasonable; for the top-hanging type, it is necessary to design a more complex return rope upper beam with a higher traction ratio, or optimize the weight reduction of the car's own weight to increase the rated load, but it faces the problem of insufficient traction caused by the total mass lower beam, and there is a risk of slipping; for the bottom-supporting type, compared with the top-hanging type, the upper beam is caused by traction The point-like force is optimized into a linear force, which improves the stress state of the return rope lower beam and further utilizes the mechanical properties of the material. However, since the return rope lower beam can only enter and exit the traction rope from both ends, it is easy to form a wandering space between the two return rope wheels of the return rope lower beam. Especially at the moment of starting, the return rope beam swings along the wandering space, causing the car to impact the guide rails on both sides in the width direction. This is acceptable for cars of normal width, but for cars of large width, this impact is uncontrollable and difficult to accept. Practice has proved that for this structure in which the traction rope spans across the double wheels, as long as a limiting device or limiting breakpoint is added in the wandering space (generally above the load-bearing structure), the above problems can be effectively solved. In order to solve the above problems, a full-surround elevator traction suspension structure is proposed.

Summary of the invention

The present invention provides a full surround elevator traction suspension structure, which solves the problems in the above-mentioned background technology.

The present invention solves the technical problem by adopting the following technical solutions:

A full-surround elevator traction suspension structure includes a car frame structure composed of a gantry and a car floor, wherein a car section is formed in the car frame structure, and the car frame structure is located above the car section to form a load-bearing section;

The car section includes a first car bottom return rope pulley and a second car bottom return rope pulley arranged on the lower side of the car bottom plate of the gantry, and the top of the gantry is provided with a first car top return rope pulley and a second car top return rope pulley in the same plane as the first car bottom return rope pulley and the second car bottom return rope pulley;

One side of the first car platform return rope pulley and the second car platform return rope pulley is also provided with an adjustment member for changing the center of mass of the car system;

The load-bearing interval includes a deflection guide wheel, a car rope head and a traction wheel for providing power. A traction rope is tensioned in the groove of the traction wheel. The traction rope enters the traction wheel and sequentially passes through the first car bottom return rope wheel and the second car bottom return rope wheel, then extends to the deflection guide wheel, then enters the first car top return rope wheel and the second car top return rope wheel, and is finally fixed on the car rope head.

Preferably, the gantry also includes two rope return beams for installing two pairs of upper and lower rope return wheels, and the two rope return beams are spaced apart and distributed vertically and are integrally connected to the gantry.

Preferably, the adjustment member includes supporting lower beams located on both sides of the gantry, the supporting lower beams and the common lower beam form an adjustment space with adjustable spacing, and the gantry is a vertical beam frame extending downward into the adjustment space for fixation.

Preferably, a safety clamp for ensuring safe operation of the elevator car is provided below the supporting lower beam.

Preferably, a lower guide shoe for cooperating with the guide rail is also provided directly below the safety clamp.

Preferably, the adjusting member also includes a coupling vibration reduction mechanism arranged at the bottom of the upper and lower return rope beams, and the coupling vibration reduction mechanism includes a vibration reduction rubber arranged at the bottom of the return rope beam, and a coupling bridge for fixing and limiting the vibration reduction rubber is provided below the vibration reduction rubber.

Preferably, a safety structure for improving the traction ratio is also provided in the car section and the load-bearing section.

Preferably, one end of the car rope head is used to be fixed on the top of the elevator shaft, and the other end of the traction rope in the traction wheel is used to be connected to the elevator counterweight side.

The advantages and positive effects of the present invention are: the upper and lower beams of the elevator car frame are designed as return rope beams through the setting of the full-surround elevator traction suspension structure, and the full-wrapping method of winding two lower beam return rope wheels with a wider span and continuously winding two upper beam return rope wheels with a narrower span is adopted to realize the full-surround traction suspension and form a multi-point three-dimensional support structure. At the same time, a deflection guide wheel is installed in the walking space between the return rope wheels to limit the shaking of the traction rope and ensure the stability of the elevator operation. The full-surround traction suspension method makes the force of the elevator car more uniform and reduces the problem of force concentration in a single direction. The strength of the upper and lower beams is fully utilized to enable the elevator to carry a larger load and meet the heavy load requirements.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic structural diagram of the present invention;

FIG2 is a schematic diagram of a partial structure of FIG1 ;

FIG3 is an enlarged structural schematic diagram of A in FIG2 ;

FIG4 is a schematic diagram of the full surround elevator traction suspension structure in FIG1 ;

FIG5 is a second schematic diagram of the full surround elevator traction suspension structure in FIG1;

FIG6 is a third schematic diagram of the full surround elevator traction suspension structure in FIG1;

The symbols in the accompanying drawings are described as follows:

1. Car floor; 11. Car compartment; 111. Gantry; 12. Rope return beam; 121. Second car top rope return pulley; 122. First car top rope return pulley; 13. Deflection guide wheel; 131. Traction rope; 132. Load-bearing space; 14. Car rope head; 15. Traction wheel;

2. Adjusting part; 21. First car bottom return rope pulley; 211. Second car bottom return rope pulley; 22. Lower guide shoe; 23. Support lower beam; 24. Coupling vibration reduction mechanism; 25. Coupling bridge; 251. Vibration reduction rubber; 26. Safety clamp.

DETAILED DESCRIPTION

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

Referring to Figures 1, 2 and 3, the top-hanging type uses an upper beam return rope device, and the bottom-supporting type uses a lower beam return rope device. The top-hanging type needs to design a larger or more complex return rope upper beam, or optimize the weight reduction on the car's own weight to increase the rated load; the bottom-supporting type improves the stress state through the linear stress of the return rope lower beam, but there is a problem of wandering space formed when the two ends of the return rope lower beam enter and exit the traction rope 131. The top-hanging type needs to design a larger or more complex return rope upper beam, which increases the complexity and cost of the structure; although the bottom-supporting type improves the stress state, the wandering space problem of the return rope lower beam causes the car to impact the guide rails on both sides in the width direction, especially at the moment of starting. This impact is uncontrollable, which is particularly difficult for a large-width car. It is accepted that the existing elevator car frame structure has insufficient bearing capacity and system stability problems in heavy-load and large-width application scenarios, as well as force concentration and local stress concentration problems on the return rope beam 12. In order to solve the above problems, a full-surround elevator traction suspension structure is proposed. By designing the upper and lower beams of the elevator car frame as return rope beams 12, and adopting a full-wrapping method and installing a deflection guide wheel 13 in the walking space, the stability of the elevator operation is achieved. Specifically, a full-surround elevator traction suspension structure includes a car frame structure composed of a gantry 111 and a car bottom plate 1, a car section 11 is formed in the car frame structure, and the car frame structure is located above the car section 11 to form a load-bearing section;

The car compartment 11 includes a first car bottom return rope pulley 21 and a second car bottom return rope pulley 211 arranged on the gantry 111 at the lower side of the car bottom plate 1, and a first car top return rope pulley 122 and a second car top return rope pulley 121 arranged on the top of the gantry 111 in the same plane as the first car bottom return rope pulley 21 and the second car bottom return rope pulley 211;

An adjusting member 2 for changing the center of mass of the car system is also provided on one side of the first car bottom return rope pulley 21 and the second car bottom return rope pulley 211;

The load-bearing area includes a deflection guide wheel 13, a car rope head 14 and a traction wheel 15, wherein a traction rope 131 is tensioned in the traction wheel 15, and the traction rope 131 enters from the traction wheel 15, passes through the first car bottom return rope wheel 21 and the second car bottom return rope wheel 211 in a circular manner, and then extends to the deflection guide wheel 13, and then enters the first car top return rope wheel 122 and the second car top return rope wheel 121, and is finally fixed on the car rope head 14; by setting the full-surrounding elevator traction suspension structure, The upper and lower beams of the elevator car frame are designed as return rope beams 12, which are fully wrapped by two lower beam return rope wheels with a wider span and two upper beam return rope wheels with a narrower span, to achieve full-surround traction suspension and form a multi-point three-dimensional support structure. At the same time, a deflection guide wheel 13 is installed in the walking space between the return rope wheels to limit the shaking of the traction rope 131, ensure the stability of the elevator operation, and make the force of the elevator car more uniform through the full-surround traction suspension method, reducing the problem of force concentration in a single direction. Make full use of the strength of the upper and lower beams, so that the elevator can carry a larger load and meet the heavy load requirements.

As shown in FIG4 , it should be noted that the above-mentioned full-surrounding type refers to a method in which the traction rope 131 enters from the traction wheel 15, sequentially surrounds and passes through the first car bottom return rope wheel 21 and the second car bottom return rope wheel 211, and then extends to the deflection guide wheel 13, then enters the first car top return rope wheel 122 and the second car top return rope wheel 121, and is finally fixed on the car rope head 14; and one end of the car rope head 14 is used to be fixed on the top of the elevator shaft, and the other end of the traction rope 131 in the traction wheel 15 is used to connect with the elevator counterweight side; the above-mentioned full-surrounding structure setting can achieve a more uniform force on the elevator car and can carry a larger load. The design of multi-point three-dimensional suspension support and limited walking space improves the stability and safety of elevator operation, and reasonable force distribution and material utilization reduce local stress concentration and extend the service life of the car frame.

Furthermore, a safety structure for improving the traction ratio is provided in the car section 11 and the load-bearing section, and the above-mentioned safety structure is specifically manifested as follows: a traction ratio 4:1 suspension structure is used in FIG4, and in order to ensure that the strength of the entire suspension structure can adapt to traction machines with different parameters, in this embodiment, after a pair of bearing return rope pulleys are installed in the load-bearing space 132, it will become a 6:1 suspension structure. As shown in FIG5, on the basis of the 6:1 suspension structure, a return rope pulley is added to the upper beam of the car frame to arrange it into an 8:1 suspension structure, thereby being able to adapt to traction machines with different parameters.

It should be noted that the above-mentioned changes to the traction ratio of the suspension structure do not involve changes to other structures, and only some structures are added to adjust the traction ratio.

It should also be noted that the full-surround elevator traction suspension structure not only improves the elevator's load-bearing capacity and operating stability, but also extends the service life of the car frame through optimized design and material utilization. It is particularly suitable for heavy-load and large-width elevator application scenarios. This innovative design provides modern industry and warehousing industries with safer and more efficient vertical transportation solutions.

In addition, in order to ensure the stability of the above-mentioned car system, in this embodiment, one side of the first car bottom return rope pulley 21 and the second car bottom return rope pulley 211 is also provided with an adjusting member 2 for changing the center of mass of the car system; the center of mass of the car system can be adjusted by setting the adjusting member 2.

In addition, in order to adjust the counterweight, the length of the lower beam return rope pulley axle and the distance between the return rope lower beam and the common lower beam can be appropriately adjusted to change the center of mass of the car system, achieve a suitable balance state, and reduce the friction of the car guide shoe on the guide rail.

Specifically, the structure of the above-mentioned adjusting member 2 is as follows: the adjusting member 2 also includes a coupling vibration reduction mechanism 24 arranged at the bottom of the two return rope beams 12, the coupling vibration reduction mechanism 24 includes a vibration reduction rubber 251 arranged at the bottom of the return rope beam 12, and a coupling bridge 25 for fixing and limiting the vibration reduction rubber 251 is provided below the vibration reduction rubber 251; by setting the coupling vibration reduction mechanism 24, the entire elevator system can have a better vibration reduction effect during movement.

It is worth mentioning that the above-mentioned special terms need to be explained, specifically: Deflection guide wheel 13: a guide wheel with a certain degree of rotation freedom relative to the vertical direction, used to limit the shaking of the traction rope 131 during starting and stopping, and ensure the smooth operation of the elevator.

The moving space refers to the range of movement of the traction rope 131 on the return rope beam 12. Too large a moving space may cause the car and the traction rope 131 to shake, affecting the stability of the elevator.

Coupling vibration reduction assembly: a component used to absorb vibration and impact during elevator operation, and to coordinate damping through the coupling bridge 25 to reduce noise and vibration transmission.

Furthermore, there are also lower guide shoes 22 and safety clamps 26 to ensure the structure required during the operation of the entire elevator system, which will not be described in detail here.

It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive, and therefore the present invention is not limited to the embodiments described in the specific implementation manners. Any other implementation manners derived by those skilled in the art based on the technical solutions of the present invention also fall within the scope of protection of the present invention.

Claims (8)

1. The utility model provides a full surrounding elevator tows suspension structure, includes sedan-chair frame structure that portal frame (111) and sedan-chair bottom plate (1) are constituteed, its characterized in that: a car section (11) is formed in the car frame structure, and a bearing section is formed above the car section (11) by the car frame structure;

The elevator car section (11) comprises a first elevator car bottom return rope pulley (21) and a second elevator car bottom return rope pulley (211) which are arranged on the lower side of the elevator car bottom plate (1) of the gantry frame (111), and a first elevator car top return rope pulley (122) and a second elevator car top return rope pulley (121) which are positioned in the same plane with the first elevator car bottom return rope pulley (21) and the second elevator car bottom return rope pulley (211) are arranged on the top of the gantry frame (111);

one side of the first car bottom rope return wheel (21) and one side of the second car bottom rope return wheel (211) are also provided with an adjusting piece (2) for changing the mass center of the car system;

The elevator car is characterized in that the bearing section comprises a deflection guide wheel (13), a car rope head (14) and a traction wheel (15) for providing power, wherein a traction rope (131) is tensioned in a groove of the traction wheel (15), the traction rope (131) enters the first car bottom rope return wheel (21) and the second car bottom rope return wheel (211) which sequentially pass through in a surrounding mode from the traction wheel (15) and then extends into the deflection guide wheel (13), and then enters the first car top rope return wheel (122) and the second car top rope return wheel (121) to be finally fixedly arranged on the car rope head (14).

2. The full-wrap elevator traction suspension structure of claim 1 wherein: the portal frame (111) is internally provided with two rope returning beams (12) for installing upper and lower pairs of rope returning wheels, and the two rope returning beams (12) are distributed at intervals up and down and are integrally connected with the portal frame (111).

3. The full-wrap elevator traction suspension structure of claim 1 wherein: the adjusting piece (2) comprises supporting lower beams (23) and a shared lower beam which are respectively arranged on two sides of the portal frame (111), an adjusting space with adjustable space is formed between the supporting lower beams (23) and the shared lower beam, and the portal frame (111) is vertically provided with a beam frame which extends downwards into the adjusting space to be fixed.

4. A fully encircling elevator traction suspension structure according to claim 3, characterized in that: and a safety clamp (26) for ensuring the running safety of the elevator car is arranged below the supporting lower beam (23).

5. The full wrap elevator traction suspension of claim 4 wherein: and a lower guide shoe (22) which is used for being matched with the guide rail is also arranged under the safety tongs (26).

6. The full-wrap elevator traction suspension structure of claim 2, wherein: the adjusting piece (2) further comprises a coupling vibration reduction mechanism (24) arranged at the bottoms of the upper rope returning beam (12) and the lower rope returning beam, the coupling vibration reduction mechanism (24) comprises vibration reduction rubber (251) arranged at the bottoms of the rope returning beams (12), and a coupling bridge (25) used for fixing and limiting the vibration reduction rubber (251) is arranged below the vibration reduction rubber (251).

7. The full-wrap elevator traction suspension structure of claim 1 wherein: and safety structures for improving traction ratio are further arranged in the car section (11) and the bearing section.

8. The full-wrap elevator traction suspension structure of claim 1 wherein: one end of the car rope head (14) is used for being fixed at the top of an elevator shaft, and the other end of the traction rope (131) in the traction sheave (15) is used for being connected with the counterweight side of the elevator.