Height-variable buffer set for elevator

Abstract

The utility model relates to elevator buffer technical field, and disclose a kind of height variable buffer group for elevator, including elevator shaft bottom layer, the upper symmetry of elevator shaft bottom layer is equipped with multiple fixed support cylinder, the bottom end of fixed support cylinder is fixedly connected with bottom support seat, and the inside coaxial sliding of fixed support cylinder is inserted with lifting support cylinder;First limiting cylinder is set in the upper of lifting support cylinder.The utility model is convenient adjustment to the height of shock-absorbing component by adjusting component, so as to be conducive to the height of buffer group is adjusted without disassembling and replacing fixed support cylinder, lifting support cylinder, be conducive to the improvement of applicability;By shock-absorbing component, the reaction force in the process of elevator car drop buffering is gradually weakened, so as to prevent elevator car repeatedly rebounds under the influence of reaction force to cause secondary impact injury to passenger, be conducive to the improvement of the safety performance of elevator whole.

Description

Technical Field

[0001] This utility model relates to the field of elevator buffer technology, specifically a height-variable buffer group for elevators. Background Technology

[0002] An elevator is a permanent transportation device that serves several specific floors within a building. Its car moves on at least two rigid tracks that are perpendicular to the horizontal plane or have an angle of inclination of less than 15° to the vertical. Its main function is to transport passengers or goods. The elevator buffer is a key safety device installed at the bottom of the elevator shaft. It is the last physical protective barrier of the elevator system. Its main function is to absorb the impact kinetic energy of the car or counterweight in extreme situations such as wire rope breakage or insufficient traction, and to prevent the car from directly hitting the bottom or top of the shaft through deceleration and buffering.

[0003] When existing elevator height-adjustable buffer assemblies are in use, their main protective structure is generally based on buffer springs. However, when the elevator car falls with a large force, the buffer springs will rebound after being compressed by the impact force, generating a reaction force. At this time, due to the lack of a mechanism to weaken the spring reaction force, the staff in the elevator car may still suffer secondary impact injuries due to the spring reaction force. This reduces the safety performance of the elevator to a certain extent and is not conducive to the normal use of the elevator. Utility Model Content

[0004] The purpose of this invention is to provide a height-variable buffer assembly for elevators to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a height-variable buffer assembly for elevators, comprising: At the bottom of the elevator shaft, a plurality of fixed support cylinders are symmetrically arranged above the bottom of the elevator shaft. The bottom end of each fixed support cylinder is fixedly connected to a bottom support base, and a lifting support cylinder is slidably inserted coaxially inside the fixed support cylinder. The first limiting cylinder is set above the lifting support cylinder. The bottom end of the first limiting cylinder is fixedly connected to the top support seat, and the top support seat is connected to the lifting support cylinder by bolts. The second limiting cylinder is coaxially disposed inside the first limiting cylinder. A buffer block is fixedly connected to the top of the second limiting cylinder, and a support cylinder is fixedly connected to the top of the top support seat. The shock-absorbing component is installed on the outside of the support cylinder to reduce the reaction force of the elevator car falling. The fixed support cylinder is equipped with an adjustment component for adjusting the height of the shock-absorbing component.

[0006] Preferably, the adjusting component includes a first docking hole disposed inside the fixed support cylinder, and multiple first docking holes are provided. The lifting support cylinder has a second docking hole corresponding to the first docking hole. The second docking hole is provided with a height adjusting bolt. One end of the height adjusting bolt passes through to the outside of the first docking hole and is spirally connected to a height adjusting nut.

[0007] Preferably, the bottom end of the fixed support cylinder is symmetrically provided with multiple reinforcing plates, which are respectively connected to the fixed support cylinder and the bottom support base, and the bottom support base is symmetrically provided with multiple positioning holes inside.

[0008] Preferably, the bottom of the buffer block is fixedly connected to an external threaded post, and a main buffer spring is coaxially provided around the periphery of the external threaded post. The main buffer spring is located inside the support cylinder, and the bottom end of the external threaded post penetrates into the interior of the lifting support cylinder and is screwed with a fastening nut.

[0009] Preferably, the shock absorption assembly includes a relief groove disposed inside the support cylinder, and multiple relief grooves are provided. A wedge block is slidably connected inside the relief groove. A groove is formed on one side of the wedge block. A secondary buffer spring is disposed inside the groove. The secondary buffer spring is connected to the wedge block and the support cylinder respectively. A wedge ring seat corresponding to the wedge block is provided on the periphery of the support cylinder. The wedge ring seat is fixedly installed on the inner wall of the second limiting cylinder. The bottom of the wedge ring seat is in contact with the wedge block.

[0010] Preferably, a plurality of sliders are symmetrically installed on the outer side of the second limiting cylinder, and a groove corresponding to the slider is formed on the inner wall of the first limiting cylinder, with the slider located inside the groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention allows for convenient height adjustment of the shock-absorbing components through an adjustable assembly. This facilitates height adjustment of the buffer group without disassembling or replacing the fixed support cylinder or the lifting support cylinder, thus improving applicability. By gradually weakening the reaction force during the elevator car's descent through the shock-absorbing components, it prevents the elevator car from repeatedly rebounding under the influence of the reaction force, thus preventing secondary impact injuries to passengers and improving the overall safety performance of the elevator. Attached Figure Description

[0012] Figure 1 A schematic diagram of the main structure of the elevator height-variable buffer assembly provided by this utility model; Figure 2 This is a schematic diagram of the internal structure of the fixed support cylinder provided by this utility model; Figure 3 A schematic diagram of the internal structure of the first limiting cylinder provided by this utility model; Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 A schematic diagram of the adjustment component structure provided by this utility model; Figure 6 A schematic diagram of the internal structure of the support cylinder provided by this utility model.

[0013] In the diagram: 1. Elevator shaft bottom; 2. Fixed support cylinder; 3. Lifting support cylinder; 4. Adjustment assembly; 41. First docking hole; 42. Second docking hole; 43. Height adjustment bolt; 44. Height adjustment nut; 5. Bottom support seat; 6. Positioning hole; 7. First limiting cylinder; 8. Top support seat; 9. Second limiting cylinder; 10. Buffer block; 11. Support cylinder; 12. Vibration damping assembly; 121. Relief groove; 122. Wedge block; 123. Groove; 124. Secondary buffer spring; 125. Wedge ring seat; 13. External threaded column; 14. Fastening nut; 15. Main buffer spring; 16. Slider; 17. Slide groove; 18. Reinforcing plate. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-6As shown, a height-variable buffer assembly for elevators includes an elevator shaft bottom layer 1, a plurality of fixed support cylinders 2 symmetrically arranged above the elevator shaft bottom layer 1, a bottom support seat 5 fixedly connected to the bottom end of the fixed support cylinder 2, and a lifting support cylinder 3 coaxially slidably inserted inside the fixed support cylinder 2; a first limiting cylinder 7 is arranged above the lifting support cylinder 3, a top support seat 8 is fixedly connected to the bottom end of the first limiting cylinder 7, and the top support seat 8 is connected to the lifting support cylinder 3 by bolts; a second limiting cylinder 9 is coaxially arranged inside the first limiting cylinder 7, a buffer block 10 is fixedly connected to the top end of the second limiting cylinder 9, and a support cylinder 11 is fixedly connected to the top end of the top support seat 8; The shock absorber 12 is installed on the outside of the support cylinder 11 to weaken the reaction force of the elevator car falling. By installing the shock absorber 12, the reaction force can be gradually weakened during the process of the elevator car falling and buffering, so as to prevent the elevator car from repeatedly rebounding under the influence of the reaction force and causing secondary impact injury to passengers, which is conducive to improving the overall safety performance of the elevator. The fixed support cylinder 2 is equipped with an adjustment component 4 for adjusting the height of the shock absorber 12. By setting the adjustment component 4, the staff can easily adjust the height of the shock absorber 12 according to the actual situation, which is conducive to improving the applicability of the buffer group.

[0016] Adjustment component 4 includes multiple first docking holes 41 disposed inside the fixed support cylinder 2. The lifting support cylinder 3 has second docking holes 42 corresponding to the first docking holes 41 inside. An adjusting bolt 43 is disposed inside the second docking hole 42, with one end of the adjusting bolt 43 extending through to the outside of the first docking hole 41 and screwed onto an adjusting nut 44. Figure 2 , Figure 4 As shown, by setting the first docking hole 41 and the second docking hole 42, and with the help of the height adjustment bolt 43 and the height adjustment nut 44, the height of the shock absorber assembly 12 can be easily adjusted by the staff. This is beneficial to adjusting the height of the buffer group without disassembling and replacing the fixed support cylinder 2 and the lifting support cylinder 3, which helps to improve applicability.

[0017] The bottom end of the fixed support cylinder 2 is symmetrically provided with multiple reinforcing plates 18. The reinforcing plates 18 are respectively connected to the fixed support cylinder 2 and the bottom support base 5. The bottom support base 5 is symmetrically provided with multiple positioning holes 6 inside, such as... Figure 1 , Figure 2 and Figure 4 As shown, by setting the reinforcing plate 18, the support strength of the fixed support cylinder 2 can be enhanced, and by using the positioning hole 6 and fasteners such as bolts, the connection and fixation between the fixed support cylinder 2 and the bottom layer 1 of the elevator shaft can be realized.

[0018] A threaded post 13 is fixedly connected to the bottom of the buffer block 10. A main buffer spring 15 is coaxially arranged around the outer periphery of the threaded post 13. The main buffer spring 15 is located inside the support cylinder 11. The bottom end of the threaded post 13 penetrates into the interior of the lifting support cylinder 3 and is screwed with a fastening nut 14. Figure 3 , Figure 4 As shown, when the elevator car falls due to an accident, the elevator car will first come into contact with the buffer block 10. Then, the buffer block 10 will drive the external threaded column 13 to slide inside the support cylinder 11. At the same time, the main buffer spring 15 will be compressed, thereby achieving the initial buffering of the elevator car's downward force.

[0019] The shock absorption assembly 12 includes a relief groove 121 disposed inside the support cylinder 11. Multiple relief grooves 121 are provided. A wedge block 122 is slidably connected inside the relief groove 121. A groove 123 is formed on one side of the wedge block 122. A secondary buffer spring 124 is disposed inside the groove 123. The secondary buffer spring 124 is connected to both the wedge block 122 and the support cylinder 11. A wedge ring seat 125 corresponding to the wedge block 122 is provided on the periphery of the support cylinder 11. The wedge ring seat 125 is fixedly installed on the inner wall of the second limiting cylinder 9. The bottom of the wedge ring seat 125 contacts the wedge block 122. Figure 3 , Figure 4 and Figure 6 As shown, during the process of the buffer block 10 driving the second limiting cylinder 9 to move downward, the wedge-shaped ring seat 125 on the inner wall of the second limiting cylinder 9 needs to overcome the elastic potential energy of the auxiliary buffer spring 124 to drive the wedge block 122 into the recess groove 121. The multiple sets of wedge blocks 122 and auxiliary buffer springs 124 arranged along the falling path of the wedge-shaped ring seat 125 will gradually weaken the reaction force during the elevator car's falling buffer process. This can prevent the elevator car from repeatedly rebounding under the influence of the reaction force and causing secondary impact injuries to passengers, which is conducive to improving the overall safety performance of the elevator.

[0020] Multiple sliders 16 are symmetrically installed on the outer side of the second limiting cylinder 9. A groove 17 corresponding to the slider 16 is formed on the inner wall of the first limiting cylinder 7. The slider 16 is located inside the groove 17. Figure 3 , Figure 4 As shown, by setting the slide groove 17 and the slider 16, the second limiting cylinder 9 can remain smooth during the lifting and lowering displacement process, which is conducive to improving the working stability of the shock absorption component 12.

[0021] Working principle: First, the fixed support cylinder 2 and the bottom of the elevator shaft 1 can be connected and fixed by using the positioning hole 6 and fasteners such as bolts. Then, the height of the shock absorption component 12 can be easily adjusted by the adjustment component 4. This allows for adjustment of the height of the buffer group without disassembling or replacing the fixed support cylinder 2 and the lifting support cylinder 3, which improves applicability. When the elevator car falls due to an accident, the buffer block 10 drives the external threaded column 13 to slide inside the support cylinder 11, while the main buffer spring 15 is compressed, thus achieving initial buffering of the elevator car's falling force. Then, the shock absorption component 12 gradually weakens the reaction force during the elevator car's falling process, which can prevent the elevator car from repeatedly rebounding under the influence of the reaction force and causing secondary impact injuries to passengers, thus improving the overall safety performance of the elevator.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A height-variable buffer assembly for elevators, characterized in that, include: The bottom of the elevator shaft (1) is symmetrically provided with multiple fixed support cylinders (2) above the bottom of the elevator shaft (1). The bottom end of the fixed support cylinder (2) is fixedly connected to a bottom support seat (5). The inside of the fixed support cylinder (2) is coaxially slidably inserted with a lifting support cylinder (3). The first limiting cylinder (7) is set above the lifting support cylinder (3). The bottom end of the first limiting cylinder (7) is fixedly connected to the top support seat (8). The top support seat (8) is connected to the lifting support cylinder (3) by bolts. The second limiting cylinder (9) is coaxially disposed inside the first limiting cylinder (7). A buffer block (10) is fixedly connected to the top of the second limiting cylinder (9), and a support cylinder (11) is fixedly connected to the top of the top support seat (8). The shock-absorbing component (12) is set on the outside of the support cylinder (11) to weaken the reaction force of the elevator car falling. The fixed support cylinder (2) is provided with an adjustment component (4) for adjusting the height of the shock-absorbing component (12).

2. The elevator height-variable buffer assembly according to claim 1, characterized in that: The adjustment component (4) includes a first docking hole (41) provided inside the fixed support cylinder (2). Multiple first docking holes (41) are provided. The lifting support cylinder (3) has a second docking hole (42) corresponding to the first docking hole (41) inside. The second docking hole (42) is provided with a height adjustment bolt (43) inside. One end of the height adjustment bolt (43) extends through to the outside of the first docking hole (41) and is spirally connected with a height adjustment nut (44).

3. The elevator height-variable buffer assembly according to claim 1, characterized in that: The bottom end of the fixed support cylinder (2) is symmetrically provided with multiple reinforcing plates (18), which are connected to the fixed support cylinder (2) and the bottom support base (5) respectively. The bottom support base (5) is symmetrically provided with multiple positioning holes (6).

4. The elevator height-variable buffer assembly according to claim 1, characterized in that: The bottom of the buffer block (10) is fixedly connected to an external threaded column (13), and a main buffer spring (15) is coaxially provided on the periphery of the external threaded column (13). The main buffer spring (15) is located inside the support cylinder (11), and the bottom end of the external threaded column (13) penetrates into the lifting support cylinder (3) and is screwed with a fastening nut (14).

5. The height-variable bumper set for an elevator according to claim 1, characterized in that: The shock absorption assembly (12) includes a relief groove (121) disposed inside the support cylinder (11). Multiple relief grooves (121) are provided. A wedge block (122) is slidably connected inside the relief groove (121). A groove (123) is provided on one side of the wedge block (122). A secondary buffer spring (124) is provided inside the groove (123). The secondary buffer spring (124) is connected to the wedge block (122) and the support cylinder (11) respectively. A wedge ring seat (125) corresponding to the wedge block (122) is provided on the periphery of the support cylinder (11). The wedge ring seat (125) is fixedly installed on the inner wall of the second limiting cylinder (9). The bottom of the wedge ring seat (125) is in contact with the wedge block (122).

6. The height-variable bumper set for an elevator according to claim 1, characterized in that: The outer side of the second limiting cylinder (9) is symmetrically provided with a plurality of sliding blocks (16), and the inner wall of the first limiting cylinder (7) is provided with sliding grooves (17) corresponding to the sliding blocks (16), and the sliding blocks (16) are located in the sliding grooves (17).

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