Protection mechanism for elevator pit maintenance

Abstract

The utility model relates to the technical field of protection mechanisms, and discloses a protection mechanism for elevator pit maintenance, which comprises a mounting frame, a protection mechanism is arranged in the mounting frame, a lifting mechanism is arranged in the mounting frame, an elevator hoistway is fixedly connected outside the mounting frame, and the elevator hoistway is fixedly connected with the lifting mechanism. An elevator car is slidably connected to the interior of the elevator shaft, an elevator traction rope is fixedly connected to the top of the elevator car, the protection mechanism comprises a limiting assembly and a buffering assembly, the limiting assembly is arranged in the mounting frame, and the buffering assembly is arranged in the limiting assembly. The damping blocks between the buffer plate and the bottom plate and the first springs are used for damping and buffering at the same time, then the second springs are compressed through the connecting rods, the buffer effect is improved, the situation that the buffer plate cannot bear impact due to the fact that the elevator car rapidly falls on the surface of the buffer plate is prevented, part of impact of the elevator car can be absorbed, safety is improved, and safety accidents are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of protection mechanisms, in particular to a protection mechanism for elevator pit maintenance. Background Art

[0002] Elevators, as a means of transportation, travel between high floors and the ground, and are inherently dangerous. Therefore, they need to be inspected and maintained regularly to ensure their normal operation and the safety of passengers. During the inspection and trial operation of the elevator, protection mechanisms are needed to prevent the car from losing control and causing accidents such as hitting the top or squatting on the bottom, and to protect the safety of workers in the pit and on the top of the car.

[0003] According to the description of a protective mechanism for elevator pit maintenance disclosed on the patent website (authorization announcement number: CN220431958U), "The present application discloses a protective mechanism for elevator pit maintenance, which relates to the field of elevator equipment, including an elevator shaft, wherein an elevator car is arranged inside the elevator shaft. The present application is provided with a receiving groove, a protective plate and an oil cylinder, so that when the elevator pit needs to be inspected, the oil cylinders on both sides can be started to shrink the two groups of oil cylinders, thereby driving the connecting blocks and push rods on both sides to move downward, so that when the push rod moves to the inside of the groove, the protective plates on both sides can rotate relatively due to the action of gravity, until the two groups of protective plates rotate to abut against the inner bottom walls of the two groups of receiving grooves respectively. Due to the obstruction of the two groups of protective plates, it can play a protective role for the maintenance personnel during the elevator pit maintenance process. Since the oil cylinder is fixed inside the groove, the entire protective mechanism does not need to occupy space outside the elevator shaft, so there is no need to reserve space outside the elevator shaft during the architectural design, thereby improving the applicability of the entire protective mechanism."

[0004] In view of the above description, the applicant believes that there are the following problems:

[0005] During the use of the utility model, the device contracts through two sets of oil cylinders to cause the two protective plates to rotate relative to each other, and then the protective plates are pulled by traction cables. The elevator car is generally heavy. When an accident occurs and the elevator car falls and contacts the protective plates, the elevator car is heavy and falls quickly. Since the protective plates are only limited by the traction cables, the protective plates cannot withstand the impact of the elevator car, resulting in a safety accident. Therefore, it is necessary to improve a protective mechanism for elevator pit inspection to solve the above problem. Utility Model Content

[0006] The purpose of the utility model is to provide a protective mechanism for elevator pit maintenance to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a protective mechanism for elevator pit maintenance, comprising a mounting frame, a protective mechanism is arranged inside the mounting frame, a lifting mechanism is arranged inside the mounting frame, the outside of the mounting frame is fixedly connected to the elevator shaft, the inside of the elevator shaft is slidably connected to the elevator car, and the top of the elevator car is fixedly connected to the elevator traction rope.

[0008] The protection mechanism comprises a limit assembly and a buffer assembly. The limit assembly is arranged inside the installation frame, and the buffer assembly is arranged inside the limit assembly.

[0009] Preferably, the limit assembly includes a limit seat, the limit seat is fixedly connected to the inside of the installation frame, the limit seat is rotatably connected to a rotating plate inside, the front of the rotating plate is fixedly connected to a base plate, the top of the base plate is fixedly connected to a damping block, the top of the damping block is fixedly connected to a buffer plate, and a first spring is fixedly connected between the buffer plate and the base plate for limiting the base plate.

[0010] Preferably, the limit seat is provided with a groove at a corresponding position of the rotating plate, and the rotating plate rotates inside the groove. Four damping blocks are provided, and the four damping blocks are symmetrically fixedly connected between the buffer plate and the bottom plate, and are buffered by the buffer plate.

[0011] Preferably, the buffer assembly includes a first connecting seat, the first connecting seat is fixedly connected to the bottom of the buffer plate, the top of the bottom plate is fixedly connected to a support block, the inside of the support block is fixedly connected to a limiting rod, the outside of the limiting rod is slidably connected to a second connecting seat, the inner side of the second connecting seat is fixedly connected to a second spring, and a connecting rod is rotatably connected between the second connecting seat and the first connecting seat for buffering the impact of the elevator car.

[0012] Preferably, the second connecting seat and the first connecting seat are respectively provided with grooves at corresponding positions of the connecting rod, and the connecting rod rotates inside the two grooves respectively, four second connecting seats are provided, two second springs are provided, and one second spring is fixedly connected between the two second connecting seats for limiting the second connecting seats.

[0013] Preferably, the lifting mechanism includes a slot plate, which is fixedly connected to the inside of the mounting frame, the inside of the slot plate is rotatably connected to a first roller, the inside of the slot plate is movably connected to a traction cable, the traction cable is fixedly connected to the top of the base plate, the end of the traction cable away from the base plate is fixedly connected to a positioning ball, the inside of the mounting frame is fixedly connected to a positioning block, the inside of the mounting frame is fixedly connected to a dual-axis motor, the output end of the dual-axis motor is fixedly connected to a transmission rod, the transmission rod is rotatably connected to the inside of the positioning block, the end of the transmission rod away from the dual-axis motor is fixedly connected to a second roller, and the second roller is rotatably connected to the inside of the slot plate for flipping the base plate.

[0014] Preferably, the slot plate is provided with a through hole at a corresponding position of the traction cable, and the traction cable passes through the through hole, the positioning ball is in contact with the slot plate, and the traction cable is arranged between the second roller and the first roller for driving the traction cable.

[0015] Compared with the prior art, the utility model provides a protective mechanism for elevator pit maintenance, which has the following beneficial effects:

[0016] 1. The elevator pit maintenance protection mechanism, during use, performs buffering by means of the damping block between the buffer plate and the bottom plate and the first spring at the same time, and then compresses the second spring through the connecting rod to increase the buffering effect, prevents the elevator car from falling quickly on the surface of the buffer plate so that the buffer plate cannot withstand the impact, and can absorb the impact of part of the elevator car, thereby improving safety and preventing safety accidents.

[0017] 2. The elevator pit maintenance protection mechanism, during use, drives the traction cable by rotating the second roller, and the bottom plate can be retracted and extended by the traction cable. When the protection mechanism is not in use, the protection mechanism can be folded up, which will not affect the normal use of the elevator car, saves space, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0019] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the protection mechanism structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the limit assembly of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the buffer component of the utility model;

[0023] Figure 5 This is a schematic diagram of the lifting mechanism structure of the utility model.

[0024] In the figure: 1. installation frame; 2. protection mechanism; 21. limit assembly; 211. limit seat; 212. rotating plate; 213. bottom plate; 214. damping block; 215. buffer plate; 216. first spring; 22. buffer assembly; 221. first connecting seat; 222. support block; 223. limit rod; 224. second connecting seat; 225. second spring; 226. connecting rod; 3. lifting mechanism; 31. slot plate; 32. first roller; 33. traction cable; 34. positioning ball; 35. positioning block; 36. dual-axis motor; 37. transmission rod; 38. second roller; 4. elevator shaft; 5. elevator car; 6. elevator traction rope. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Embodiment 1:

[0028] See also Figure 1-4 The utility model provides a technical solution: a protective mechanism for elevator pit maintenance, comprising a mounting frame 1, a protective mechanism 2 is arranged inside the mounting frame 1, a lifting mechanism 3 is arranged inside the mounting frame 1, an elevator shaft 4 is fixedly connected to the outside of the mounting frame 1, an elevator car 5 is slidably connected to the inside of the elevator shaft 4, and an elevator traction rope 6 is fixedly connected to the top of the elevator car 5.

[0029] The protection mechanism 2 includes a limit assembly 21 and a buffer assembly 22 . The limit assembly 21 is arranged inside the installation frame 1 , and the buffer assembly 22 is arranged inside the limit assembly 21 .

[0030] Furthermore, the limit assembly 21 includes a limit seat 211, which is fixedly connected to the inside of the installation frame 1. The limit seat 211 is internally rotatably connected to a rotating plate 212, the front of the rotating plate 212 is fixedly connected to a base plate 213, the top of the base plate 213 is fixedly connected to a damping block 214, the top of the damping block 214 is fixedly connected to a buffer plate 215, and a first spring 216 is fixedly connected between the buffer plate 215 and the base plate 213 for limiting the base plate 213.

[0031] Furthermore, the limiting seat 211 is provided with a groove at a corresponding position of the rotating plate 212, and the rotating plate 212 rotates inside the groove. Four damping blocks 214 are provided, and the four damping blocks 214 are symmetrically fixedly connected between the buffer plate 215 and the bottom plate 213, and are buffered by the buffer plate 215.

[0032] Furthermore, the buffer assembly 22 includes a first connecting seat 221, the first connecting seat 221 is fixedly connected to the bottom of the buffer plate 215, the top of the bottom plate 213 is fixedly connected to a support block 222, the inside of the support block 222 is fixedly connected to a limiting rod 223, the outside of the limiting rod 223 is slidably connected to a second connecting seat 224, the inner side of the second connecting seat 224 is fixedly connected to a second spring 225, and a connecting rod 226 is rotatably connected between the second connecting seat 224 and the first connecting seat 221 for buffering the impact of the elevator car 5.

[0033] Furthermore, the second connecting seat 224 and the first connecting seat 221 are respectively provided with grooves at corresponding positions of the connecting rod 226, and the connecting rod 226 rotates inside the two grooves respectively. Four second connecting seats 224 are provided, and two second springs 225 are provided, and one second spring 225 is fixedly connected between the two second connecting seats 224 for limiting the second connecting seat 224.

[0034] Embodiment 2:

[0035] See also Figure 5, and combined with Example 1, it is further obtained that the lifting mechanism 3 includes a slot plate 31, the slot plate 31 is fixedly connected to the inside of the installation frame 1, the inside of the slot plate 31 is rotatably connected to the first roller 32, the inside of the slot plate 31 is movably connected to the traction cable 33, the traction cable 33 is fixedly connected to the top of the bottom plate 213, the end of the traction cable 33 away from the bottom plate 213 is fixedly connected to the positioning ball 34, the inside of the installation frame 1 is fixedly connected to the positioning block 35, the inside of the installation frame 1 is fixedly connected to the dual-axis motor 36, the output end of the dual-axis motor 36 is fixedly connected to the transmission rod 37, the transmission rod 37 is rotatably connected to the inside of the positioning block 35, the end of the transmission rod 37 away from the dual-axis motor 36 is fixedly connected to the second roller 38, the second roller 38 is rotatably connected to the inside of the slot plate 31, and is used to flip the bottom plate 213.

[0036] Furthermore, the slot plate 31 has a through hole at a corresponding position of the traction cable 33 , and the traction cable 33 passes through the through hole, the positioning ball 34 contacts the slot plate 31 , and the traction cable 33 is arranged between the second roller 38 and the first roller 32 for driving the traction cable 33 .

[0037] In actual operation, when the device is used, the dual-axis motor 36 drives the transmission rod 37, the transmission rod 37 rotates inside the positioning block 35, the transmission rod 37 drives the second roller 38, the second roller 38 drives the traction cable 33 through friction, the traction cable 33 is guided by the first roller 32, the first roller 32 releases the positioning ball 34 to limit the traction cable 33, when the traction cable 33 is released, the bottom plate 213 drives the rotating plate 212, the rotating plate 212 rotates inside the groove of the limiting seat 211, and the bottom plate 213 is released and rotated 90 degrees to be parallel to the limiting seat 211 The limit seat 211 limits the bottom plate 213. When the elevator car 5 falls and contacts the buffer plate 215, the buffer plate 215 descends to compress the damping block 214 and the first spring 216. At the same time, the buffer plate 215 drives the first connecting seat 221. The first connecting seat 221 pushes the connecting rod 226. The connecting rod 226 pushes the second connecting seat 224. The second connecting seat 224 slides outside the limit rod 223 while compressing the second spring 225, thereby buffering the buffer plate 215. The elevator car 5 slides inside the elevator shaft 4, and the elevator traction rope 6 pulls the elevator car 5.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A protective mechanism for elevator pit maintenance, comprising a mounting frame (1), characterized in that: A protection mechanism (2) is arranged inside the installation frame (1), a lifting mechanism (3) is arranged inside the installation frame (1), the outside of the installation frame (1) is fixedly connected to an elevator shaft (4), the inside of the elevator shaft (4) is slidably connected to an elevator car (5), and the top of the elevator car (5) is fixedly connected to an elevator traction rope (6); The protection mechanism (2) comprises a limit assembly (21) and a buffer assembly (22); the limit assembly (21) is arranged inside the installation frame (1), and the buffer assembly (22) is arranged inside the limit assembly (21); The limiting assembly (21) comprises a limiting seat (211), the limiting seat (211) is fixedly connected to the inside of the installation frame (1), a rotating plate (212) is rotatably connected to the inside of the limiting seat (211), a bottom plate (213) is fixedly connected to the front of the rotating plate (212), a damping block (214) is fixedly connected to the top of the bottom plate (213), a buffer plate (215) is fixedly connected to the top of the damping block (214), and a first spring (216) is fixedly connected between the buffer plate (215) and the bottom plate (213); The buffer assembly (22) comprises a first connecting seat (221), the first connecting seat (221) is fixedly connected to the bottom of the buffer plate (215), the top of the bottom plate (213) is fixedly connected to a supporting block (222), the interior of the supporting block (222) is fixedly connected to a limiting rod (223), the exterior of the limiting rod (223) is slidably connected to a second connecting seat (224), the inner side of the second connecting seat (224) is fixedly connected to a second spring (225), and a connecting rod (226) is rotatably connected between the second connecting seat (224) and the first connecting seat (221); The lifting mechanism (3) comprises a slot plate (31), the slot plate (31) being fixedly connected to the interior of the installation frame (1), the slot plate (31) being rotatably connected to a first roller (32), the slot plate (31) being movably connected to a traction cable (33), the traction cable (33) being fixedly connected to the top of a bottom plate (213), the end of the traction cable (33) away from the bottom plate (213) being fixedly connected to a positioning ball (34), the interior of the installation frame (1) being fixedly connected to a positioning block (35), the interior of the installation frame (1) being fixedly connected to a dual-axis motor (36), the output end of the dual-axis motor (36) being fixedly connected to a transmission rod (37), the transmission rod (37) being rotatably connected to the interior of the positioning block (35), the end of the transmission rod (37) away from the dual-axis motor (36) being fixedly connected to a second roller (38), the second roller (38) being rotatably connected to the interior of the slot plate (31).

2. The elevator pit maintenance protection mechanism according to claim 1, characterized in that: The limiting seat (211) is provided with a groove at a corresponding position of the rotating plate (212), and the rotating plate (212) rotates inside the groove. Four damping blocks (214) are provided, and the four damping blocks (214) are symmetrically fixedly connected between the buffer plate (215) and the bottom plate (213).

3. The elevator pit maintenance protection mechanism according to claim 1, characterized in that: The second connecting seat (224) and the first connecting seat (221) are respectively provided with grooves at corresponding positions of the connecting rod (226), and the connecting rod (226) rotates inside the two grooves respectively. Four second connecting seats (224) are provided, and two second springs (225) are provided, and one second spring (225) is fixedly connected between two second connecting seats (224).

4. The elevator pit maintenance protection mechanism according to claim 1, characterized in that: The slot plate (31) is provided with a through hole at a position corresponding to the traction steel cable (33), and the traction steel cable (33) passes through the through hole. The positioning ball (34) is in contact with the slot plate (31), and the traction steel cable (33) is arranged between the second roller (38) and the first roller (32).

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