Telescopic guardrail for overhauling top of elevator car

Abstract

The utility model relates to the technical field of elevator car guardrails, and discloses a telescopic guardrail for elevator car top maintenance, which comprises a first fixed sidebar and a second fixed sidebar, a longitudinal mounting groove is formed in the second fixed sidebar, and a longitudinal sliding plate is slidably mounted on the upper inner wall of the longitudinal mounting groove. Longitudinal extension bars are fixedly mounted on the lower portions of the longitudinal sliding plates, transverse mounting grooves are formed in the two sides of the interior of the first fixed side bar, transverse sliding plates are slidably mounted on the upper inner walls of the transverse mounting grooves, transverse extension bars are fixedly mounted on the lower portions of the transverse sliding plates, and limiting rods are slidably mounted on the inner wall of the mounting frame. Pressing plates are fixedly installed on the outer sides of the lower portions of the limiting rods, springs are wound around the outer sides of the limiting rods, and limiting holes are formed in the upper surfaces of the longitudinal expansion fences and the upper surfaces of the transverse expansion fences. Therefore, the size of the guardrail can be adjusted according to different elevator models when the guardrail is installed, the practicability of the guardrail is improved, and the guardrail is convenient to use by workers.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator car guardrails, in particular to a telescopic guardrail for elevator car top maintenance. Background Technique

[0002] An elevator is a transportation device for vertically transporting pedestrians or goods. The elevator serves buildings with specified floors. The vertical lift elevator has a car that runs between at least two columns of vertical or inclined rigid guide rails with an inclination angle less than 15°, facilitating passengers to enter and exit or load and unload goods. The elevator car top, in addition to being the top cover of the car, also serves as a working platform for the personnel working on the elevator car top. The personnel working on the elevator car top mainly include installation, commissioning, inspection (factory inspection, supervision inspection and regular inspection), and maintenance personnel. There are various risks in the operation on the car top. In order to prevent accidents and protect the safety of personnel and property, guardrails are installed on the car top. In the existing publicly disclosed patents: An elevator car top guardrail (Publication No.: CN217417832U) "comprises a guardrail body and a rotating access railing; the bottom of the guardrail body is connected to the elevator car top, the guardrail body includes a guardrail opening provided on the front side, and one side of the rotating access railing is fixedly connected to the guardrail body and closes the guardrail opening; the rotating access railing includes a fixed rod, a rotating cross bar and a rotating vertical bar, the fixed rod is connected to the guardrail body, the top and bottom of the rotating cross bar are rotatably connected to the fixed rod, and the rotating vertical bar is arranged between and rotatably connected to the rotating cross bars. The utility model cooperates the rotating access railing with the guardrail body, rotates and opens and closes quickly, is convenient for the staff to enter and exit the elevator car top guardrail, and greatly improves the working efficiency of the staff", but there are still some problems in the use process. The structure of the guardrail is fixed and cannot be telescopically adjusted according to different elevator models, resulting in the problem of low practicability of the guardrail. Content of the Utility Model

[0003] (I) Technical Problems to be Solved

[0004] Aiming at the deficiencies of the prior art, the utility model provides a telescopic guardrail for elevator car top maintenance, which has the advantages of being able to adjust the size of the guardrail according to different elevator models when installing the guardrail, improving the practicability of the guardrail, and being convenient for the use of the staff, and solves the problems raised in the above background technique.

[0005] (II) Technical Solutions

[0006] To achieve the above object, the following technical solutions are provided: A telescopic guardrail for maintenance on the top of an elevator car, including a first fixed side rail and a second fixed side rail. A longitudinal installation groove is opened inside the second fixed side rail. A longitudinal sliding plate is slidably installed on the upper inner wall of the longitudinal installation groove. A longitudinal extension bar is fixedly installed at the lower part of the longitudinal sliding plate. Transverse installation grooves are opened on both sides inside the first fixed side rail. A transverse sliding plate is slidably installed on the upper inner wall of the transverse installation groove. A transverse extension bar is fixedly installed at the lower part of the transverse sliding plate. Mounting brackets are fixedly installed on the upper surfaces of both sides of the first fixed side rail and the upper part of the second fixed side rail. A limiting rod is slidably installed inside the inner wall of the mounting bracket. A pressing plate is fixedly installed on the outer side of the lower part of the limiting rod. A spring is wound around the outer side of the limiting rod. Limiting holes are opened on the upper surfaces of the longitudinal extension bar and the transverse extension bar.

[0007] Preferably, the outer side of the pressing plate is slidably connected to the inner wall of the mounting bracket. The upper end of the spring is connected to the inner wall of the mounting bracket, and the lower end of the spring is connected to the upper part of the pressing plate.

[0008] Preferably, the outer side of the longitudinal extension bar is slidably connected to the inner wall of the longitudinal installation groove, and the outer side of the transverse extension bar is slidably connected to the inner wall of the transverse installation groove.

[0009] Preferably, clamping plates are fixedly installed on the upper parts of both sides of the transverse extension bar. A first bolt is threadedly installed on the surface of the clamping plate. A first threaded hole corresponding to the first bolt is opened on the upper surface of the second fixed side rail.

[0010] Preferably, second bolts are threadedly installed on the inner walls of both sides of the transverse extension bar. Corresponding second threaded holes are opened on the outer side of the second fixed side rail.

[0011] Preferably, first side plates are fixedly installed on the outer sides of the second fixed side rail and the front end of the longitudinal extension bar. A third bolt is threadedly installed on the surface of the first side plate.

[0012] Preferably, a second side plate is fixedly installed on the outer side of the first fixed side rail. A fourth bolt is threadedly installed on the inner and outer surfaces of the second side plate.

[0013] Preferably, a placement frame is fixedly installed inside the first fixed side rail.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present utility model provides a telescopic guardrail for maintenance on the top of an elevator car, having the following beneficial effects:

[0016] 1. The retractable guardrail for maintenance on the top of the elevator car, through the settings of the first fixed side rail, the second fixed side rail, the longitudinal installation groove, the longitudinal sliding plate, the longitudinal extension bar, the transverse installation groove, the transverse sliding plate, the transverse extension bar, the mounting bracket, the limit rod, the pressing plate, the spring, and the limit hole, can adjust the size of the guardrail according to different elevator models when installing the guardrail, improving the practicability of the guardrail and facilitating the use of the staff.

[0017] 2. The retractable guardrail for maintenance on the top of the elevator car, through the settings of the clamping plate, the first bolt, the second bolt, the first side plate, the third bolt, the second side plate, and the fourth bolt, can facilitate the installation and disassembly of the guardrail. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the main structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the back structure of the present utility model;

[0020] Figure 3 is the present utility model Figure 1 the enlarged schematic diagram of area A in.

[0021] In the figure: 1. The first fixed side rail; 2. The second fixed side rail; 3. The longitudinal installation groove; 4. The longitudinal sliding plate; 5. The longitudinal extension bar; 6. The transverse installation groove; 7. The transverse sliding plate; 8. The transverse extension bar; 9. The mounting bracket; 10. The limit rod; 11. The pressing plate; 12. The spring; 13. The limit hole; 14. The clamping plate; 15. The first bolt; 16. The second bolt; 17. The first side plate; 18. The third bolt; 19. The second side plate; 20. The fourth bolt; 21. The placement frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments. Obviously, the described embodiments are only a part of the embodiments, rather than all the embodiments. Based on the embodiments herein, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection.

[0023] Embodiment 1:

[0024] Please refer to Figures 1-3, A telescopic guardrail for maintenance on the top of an elevator car, comprising a first fixed side rail 1, a second fixed side rail 2. A longitudinal installation groove 3 is formed inside the second fixed side rail 2. A longitudinal sliding plate 4 is slidably installed on the upper inner wall of the longitudinal installation groove 3. A longitudinal extension bar 5 is fixedly installed at the lower part of the longitudinal sliding plate 4. Transverse installation grooves 6 are formed on both sides inside the first fixed side rail 1. A transverse sliding plate 7 is slidably installed on the upper inner wall of the transverse installation groove 6. A transverse extension bar 8 is fixedly installed at the lower part of the transverse sliding plate 7. Mounting brackets 9 are fixedly installed on the upper surfaces of both sides of the first fixed side rail 1 and the upper part of the second fixed side rail 2. A limiting rod 10 is slidably installed inside the inner wall of the mounting bracket 9. A pressing plate 11 is fixedly installed on the outer side of the lower part of the limiting rod 10. A spring 12 is wound around the outer side of the limiting rod 10. Limiting holes 13 are formed on the upper surfaces of the longitudinal extension bar 5 and the transverse extension bar 8.

[0025] Preferably, the outer side of the pressing plate 11 is slidably connected to the inner wall of the mounting bracket 9. The upper end of the spring 12 is connected to the inner wall of the mounting bracket 9, and the lower end of the spring 12 is connected to the upper part of the pressing plate 11.

[0026] Preferably, the outer side of the longitudinal extension bar 5 is slidably connected to the inner wall of the longitudinal installation groove 3, and the outer side of the transverse extension bar 8 is slidably connected to the inner wall of the transverse installation groove 6.

[0027] Specifically, the first fixed side rail 1 and the second fixed side rail 2 form a concave-shaped guardrail. The transverse extension bar 8 and the longitudinal extension bar 5 are installed inside the first fixed side rail 1 and the second fixed side rail 2. Then, the longitudinal extension bar 5 can be telescoped to adapt to the lengths of different elevators, and the transverse extension bar 8 can be telescoped at both ends to adapt to the widths of different elevators. A handle is installed at the upper end of the limiting rod 10. By pulling the handle, the limiting rod 10 can be pulled upward. The limiting rod 10 drives the pressing plate 11 to move upward, squeezing the spring 12. The limiting rod 10 leaves the limiting hole 13, so that the transverse extension bar 8 or the longitudinal extension bar 5 loses its restriction and can be adjusted accordingly.

[0028] Working principle: During installation, first manually adjust the transverse extension bars 8 on both sides of the first fixed side rail 1. Pull the limiting rod 10 upward. The limiting rod 10 leaves the limiting hole 13, and the pressing plate 11 will squeeze the spring 12. Then pull the transverse extension bar 8 to move outward. The two transverse extension bars 8 on both sides move synchronously by the same distance. After adjusting to the appropriate position, release the limiting rod 10. The spring 12 will quickly recover, and the pressing plate 11 will drive the limiting rod 10 to be installed into the limiting hole 13 to restrict the transverse extension plate. Similarly, perform the same operation as above to adjust the length of the longitudinal extension bar 5, so as to adjust the size of the guardrail according to different elevator models during the installation of the guardrail, improve the practicability of the guardrail, and facilitate the use of the staff.

[0029] Embodiment 2:

[0030] Please refer to Figures 1-3 , on the upper parts of both sides of the horizontally expandable bar 8, clamping plates 14 are fixedly installed, and a first bolt 15 is threadedly installed on the surface of the clamping plate 14. A first threaded hole corresponding to the first bolt 15 is opened on the upper surface of the second fixed side bar 2.

[0031] Preferably, second bolts 16 are threadedly installed on the inner walls of both sides of the horizontally expandable bar 8, and corresponding second threaded holes are opened on the outer side of the second fixed side bar 2.

[0032] Preferably, first side plates 17 are fixedly installed on the outer sides of the second fixed side bar 2 and the front end of the longitudinally expandable bar 5, and a third bolt 18 is threadedly installed on the surface of the first side plate 17.

[0033] Preferably, a second side plate 19 is fixedly installed on the outer side of the first fixed side bar 1, and a fourth bolt 20 is threadedly installed on the surface of the second side plate 19.

[0034] Preferably, a placement frame 21 is fixedly installed inside the first fixed side bar 1.

[0035] Specifically, the setting of the placement frame 21 facilitates placing some operating tools during work.

[0036] Working principle: The clamping plates 14 at both ends of the horizontally expandable bar 8 are correspondingly clamped on the second fixed side bars 2 on both sides and fixed by the first bolts 15. At the same time, multiple second bolts 16 are used for fixing below, so that the horizontally expandable bar 8 and the second fixed side bar 2 are connected. Then, the first fixed side bar 1 and the second fixed side bar 2 are fixedly installed on the upper part of the elevator car top through the third bolts 18 and the fourth bolts 20. When disassembling, only the third bolts 18 and the fourth bolts 20 need to be disassembled, and disassembling the first bolts 15 and the second bolts 16 can separate the first fixed side bar 1 and the second fixed side bar 2, thus achieving convenient installation and disassembly of the protective railing.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits, and the scope is defined by the appended claims and their equivalents.

Claims

1. A telescopic guardrail for maintenance on the top of an elevator car, comprising a first fixed side rail (1) and a second fixed side rail (2), characterized in that: A longitudinal installation groove (3) is provided inside the second fixed side bar (2). A longitudinal sliding plate (4) is slidably installed on the upper inner wall of the longitudinal installation groove (3). A longitudinal extension bar (5) is fixedly installed at the lower part of the longitudinal sliding plate (4). Transverse installation grooves (6) are provided on both sides inside the first fixed side bar (1). A transverse sliding plate (7) is slidably installed on the upper inner wall of the transverse installation groove (6). A transverse extension bar (8) is fixedly installed at the lower part of the transverse sliding plate (7). Mounting brackets (9) are fixedly installed on the upper surfaces of both sides of the first fixed side bar (1) and on the upper part of the second fixed side bar (2). A limiting rod (10) is slidably installed inside the inner wall of the mounting bracket (9). A pressing plate (11) is fixedly installed on the outer side of the lower part of the limiting rod (10). A spring (12) is wound around the outer side of the limiting rod (10). Limiting holes (13) are provided on the upper surfaces of the longitudinal extension bar (5) and the transverse extension bar (8).

2. The telescopic guardrail for maintenance at the top of an elevator car according to claim 1, wherein: The outer side of the pressing plate (11) is slidably connected to the inner wall of the mounting bracket (9). The upper end of the spring (12) is connected to the inner wall of the mounting bracket (9). The lower end of the spring (12) is connected to the upper part of the pressing plate (11).

3. The retractable guardrail for maintenance on the top of an elevator car according to claim 1, characterized in that: The outer side of the longitudinal extension bar (5) is slidably connected to the inner wall of the longitudinal installation groove (3). The outer side of the transverse extension bar (8) is slidably connected to the inner wall of the transverse installation groove (6).

4. A telescopic guardrail for maintenance on the top of an elevator car according to claim 1, characterized in that: Clamping plates (14) are fixedly installed on the upper parts of both sides of the transverse extension bar (8). A first bolt (15) is threadedly installed on the surface of the clamping plate (14). A first threaded hole corresponding to the first bolt (15) is provided on the upper surface of the second fixed side bar (2).

5. The retractable guardrail for elevator car top maintenance according to claim 1, wherein: Second bolts (16) are threadedly installed on the inner walls of both sides of the transverse extension bar (8). Corresponding second threaded holes are provided on the outer side of the second fixed side bar (2).

6. The telescopic guardrail for maintenance on the top of an elevator car according to claim 1, characterized in that: First side plates (17) are fixedly installed on the outer sides of the outer side of the second fixed side bar (2) and the front end of the longitudinal extension bar (5). Third bolts (18) are threadedly installed on the surfaces of the first side plates (17).

7. A telescopic guardrail for maintenance on the top of an elevator car according to claim 1, characterized in that: A second side plate (19) is fixedly installed on the outer side of the first fixed side bar (1). Fourth bolts (20) are threadedly installed on the front and back surfaces of the second side plate (19).

8. The telescopic guardrail for maintenance on the top of an elevator car according to claim 1, characterized in that: A placement frame (21) is fixedly installed inside the first fixed side bar (1).

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