An elevator car bottom access platform with a folding guardrail

Abstract

The utility model discloses an elevator car bottom maintenance platform with folding protective fence, including the base fixed installation on the maintenance platform upper portion, the base upper end surface is firmly connected with first U type support seat, and the lateral inboard wall of first U type support seat is equipped with the axial positioning recess, and the recess is inlayed with first bearing seat, and first bearing seat is rotatably connected with the first rotating shaft extending to the outside of first U type support seat, and the radial circumference wall of first rotating shaft is fixed with the vertical support column, and the upper section lateral wall of support column is fixedly connected with the transverse extension second rotating shaft, and the both ends of second rotating shaft are respectively equipped with second bearing seat, and second bearing seat is inlayed in the axle joint cavity of second U type support seat inner wall preset, and the upper surface of second U type support seat is fixedly connected with the horizontal receiving plate, and the upper portion of base still is provided with drive mechanism, and drive mechanism drives first rotating shaft to rotate around its own axis, and the output of lifting mechanism is fixedly connected with the guardrail of height adjustable telescopic lifting mechanism.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, specifically to an elevator car bottom inspection platform with a folding guardrail. Background Technology

[0002] The elevator car bottom inspection platform is a special facility for maintenance personnel to maintain the car bottom components. It uses hydraulic jacks to support the car to form a stable working surface, and is equipped with an inspection table to place tools, improving the convenience of operation. Its fixed base and hydraulic rod can be used to adjust the support height, and rubber pads cushion and protect the car. The structural design ensures safety during maintenance and is a key device to ensure the normal operation of the car bottom components in elevator maintenance.

[0003] In the existing technology, the fixed guardrail used in the traditional elevator car bottom maintenance platform, although simple in structure, has drawbacks. On the one hand, because it cannot be folded, it still occupies a lot of space when not in use, which greatly affects the storage and transportation efficiency of the maintenance platform. On the other hand, the assembly and disassembly of the guardrail requires tools, which is cumbersome, time-consuming and labor-intensive. Moreover, the disassembled parts are easy to be lost or damaged, which increases maintenance costs and management difficulty. Utility Model Content

[0004] The purpose of this utility model is to provide an elevator car bottom maintenance platform with a foldable guardrail, so as to solve the problems mentioned in the background art that the fixed guardrail cannot be folded, takes up a lot of space when not in use, affecting storage and transportation efficiency, and requires tools and is cumbersome to assemble and disassemble.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an elevator car bottom inspection platform with a folding guardrail, comprising a base fixedly installed on the upper part of the inspection platform, a first U-shaped support fixedly connected to the upper end face of the base, an axial positioning groove provided on the inner side wall of the first U-shaped support, a first bearing seat embedded in the groove, a first rotating shaft rotatably connected to the first bearing seat extending to the outer side of the first U-shaped support, a vertical support column fixedly mounted on the radial peripheral wall of the first rotating shaft, a second rotating shaft extending laterally fixedly connected to the upper side wall of the support column, and two... Each end is equipped with a second bearing seat, which is embedded in a pre-set shaft connection cavity on the inner wall of the second U-shaped support. A horizontal receiving plate is fixed to the upper surface of the second U-shaped support. A drive mechanism is also provided on the upper part of the base. The drive mechanism drives the first rotating shaft to rotate around its own axis. A height-adjustable telescopic lifting mechanism is installed on the upper surface of the receiving plate. A guardrail is fixed to the output end of the lifting mechanism. By operating the drive mechanism, all support columns are synchronously controlled to rotate around the axis of the first rotating shaft. By operating the lifting mechanism, a height retraction action is performed, so that the guardrail is folded and stored.

[0006] According to the preferred embodiment of this technical solution, the driving mechanism includes a bearing frame disposed on the upper part of the base, a third bearing seat disposed on one inner wall of the bearing frame, a transmission shaft rotatably connected in the third bearing seat, the end of the transmission shaft extending to the other outer wall of the bearing frame and fixedly connected to a knob, a worm coaxially fixedly connected to the transmission shaft, a worm wheel fixedly connected to the outer wall of the first rotating shaft, and the worm and the worm wheel meshing and connected.

[0007] Based on the preferred embodiment of this technical solution, the lifting mechanism includes a support plate 1 and a support plate 2 disposed on the upper part of the receiving plate. A fourth bearing seat is disposed on the surface of the support plate 1. A lead screw that passes through the support plate 2 is rotatably connected inside the fourth bearing seat. A knob 2 is disposed at the end of the lead screw. A drive seat that is connected to the guide mechanism is threadedly connected to the outer wall of the lead screw.

[0008] In a preferred embodiment of this technical solution, the guiding mechanism includes a slide rail arranged parallel to the lead screw, a slider slidably connected to the slide rail, a base provided at the upper end of the slider, and a support rod fixedly connected to the side end of the drive seat connected to the side end of the base. The support rod is connected to the guardrail through a transmission structure.

[0009] Based on the preferred embodiment of this technical solution, the transmission structure includes a hinge seat disposed on the upper part of the bearing plate, a hinge shaft disposed on the shaft contact surface of the hinge seat, and a scissor link disposed on the outer wall of the hinge shaft and the outer wall of the support rod. The scissor link is distributed along a direction perpendicular to the surface of the bearing plate, and the uppermost scissor link is connected to the lower end of the guardrail.

[0010] Based on the preferred embodiment of this technical solution, a warning light with a built-in power supply is installed at the upper end of the guardrail, and the warning lights are distributed along the long side of the guardrail.

[0011] Based on the preferred embodiment of this technical solution, the side end of the guardrail is integrally fixed with a protrusion, and a guide rod that is fixedly connected to the surface of the receiving plate is slidably connected inside the protrusion. The end of the guide rod is fixedly connected with a limit eave.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The folding design allows the guardrail to be completely stored when not in use, greatly reducing the space occupied and facilitating the storage and transportation of the maintenance platform. It is especially suitable for confined working environments or scenarios with frequent movement.

[0014] 2. The worm gear drive and screw lifting mechanism are controlled by a knob, and the guardrail can be unfolded, folded and height adjusted by a single person with manual operation, without the need for additional tools or complicated steps. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first structure of an elevator car bottom maintenance platform with foldable guardrail according to one embodiment of the present invention.

[0016] Figure 2 This is a second structural schematic diagram of one embodiment of an elevator car bottom maintenance platform with foldable guardrails according to the present invention.

[0017] Figure 3 This is a front view of the present utility model;

[0018] Figure 4 This is a schematic diagram of the drive mechanism of this utility model;

[0019] Figure 5 This is a schematic diagram of the lifting mechanism of this utility model.

[0020] In the diagram: 1. Base; 2. First U-shaped support seat; 3. First bearing seat; 4. First rotating shaft; 5. Support column; 6. Second rotating shaft; 7. Second bearing seat; 8. Second U-shaped support seat; 9. Support plate; 10. Guardrail; 11. Bearing frame; 12. Third bearing seat; 13. Drive shaft; 14. Knob one; 15. Worm gear; 16. Worm wheel; 17. Support plate one; 18. Support plate two; 19. Fourth bearing seat; 20. Lead screw; 21. Knob two; 22. Drive seat; 23. Slide rail; 24. Slider; 25. Base; 26. Support rod; 27. Hinge seat; 28. Hinge shaft; 29. ​​Scissor linkage; 30. Warning light; 31. Protrusion; 32. Guide rod; 33. Limiting eaves. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-5This utility model provides an embodiment: an elevator car bottom maintenance platform with a folding guardrail, including a base 1 fixedly installed on the upper part of the maintenance platform, a first U-shaped support seat 2 fixedly connected to the upper end surface of the base 1, an axial positioning groove is provided on the inner side wall of the first U-shaped support seat 2, a first bearing seat 3 is embedded in the groove, a first rotating shaft 4 extending to the outer side of the first U-shaped support seat 2 is rotatably connected in the first bearing seat 3, a vertical support column 5 is fixedly installed on the radial peripheral wall of the first rotating shaft 4, a second rotating shaft 6 extending laterally is fixedly connected to the upper side wall of the support column 5, a second bearing seat 7 is installed at both ends of the second rotating shaft 6, the second bearing seat 7 is embedded in the shaft connection cavity preset in the inner wall of the second U-shaped support seat 8, a horizontal receiving plate 9 is fixedly connected to the upper surface of the second U-shaped support seat 8, a driving mechanism is also provided on the upper part of the base 1, the driving mechanism drives the first rotating shaft 4 to rotate around its own axis, a height-adjustable telescopic lifting mechanism is installed on the upper surface of the receiving plate 9, and a guardrail 10 is fixedly connected to the output end of the lifting mechanism;The drive mechanism synchronously controls all support columns 5 to rotate around the axis of the first rotating shaft 4. The lifting mechanism performs a height retraction action, causing the guardrail 10 to fold into a stowed state. The base 1 is fixed to the maintenance platform by welding or bolting, providing a stable installation foundation for the entire foldable guardrail 10. The first U-shaped support 2 is made of metal and is welded to the base 1. The first bearing seat 3 is a rolling bearing, providing rotational support for the first rotating shaft 4, ensuring that the first rotating shaft 4 can rotate smoothly and stably around its own axis. The first rotating shaft 4 is made of stainless steel. The support column 5 is a key component for rotation. Driven by a mechanism, it rotates, enabling its unfolding and folding. The support column 5 is made of metal, such as aluminum alloy or stainless steel, and is fixed to the first rotating shaft 4 by welding or bolting. The support column 5 is the main supporting component of the entire guardrail 10. The second rotating shaft 6 is made of the same metal as the first rotating shaft 4. Its function is to provide rotational support for the receiving plate 9, allowing it to move with the rotation of the support column 5. The second bearing seat 7 uses the same rolling bearing as the first bearing seat 3, providing rotational support for the second rotating shaft 6 and ensuring its stability. The second U-shaped support 8, made of the same metal as the first U-shaped support 2, is welded to the support plate 9 to ensure smooth and stable rotation. The support plate 9, made of sheet metal such as steel, provides an installation platform for the telescopic lifting mechanism. By operating the lifting mechanism to retract its height, the guardrail 10 can be lowered. Combined with the rotation of the support column 5, this allows the guardrail 10 to fold into a stowed state. When the guardrail 10 needs to be unfolded, the lifting mechanism is operated to raise it to a suitable height, providing safety for maintenance personnel. The guardrail 10 is made of metal such as stainless steel or aluminum. The alloy, fixed to the output end of the lifting mechanism by welding or bolting, serves as a safety barrier for maintenance personnel working on the elevator car bottom maintenance platform. The drive mechanism synchronously controls all support columns 5 to rotate around the first rotating shaft 4, enabling the support columns 5 to unfold and fold. The lifting mechanism performs a height retraction action, lowering the barrier 10 to a folded, stowed state for easy storage and transportation of the maintenance platform. When needed, the drive mechanism and lifting mechanism are reversed to unfold the support columns 5 and raise the barrier 10 to a suitable height, providing a safe working environment for maintenance personnel.

[0023] Please see Figure 2 and Figure 4A further embodiment of this solution is as follows: The drive mechanism includes a support frame 11 mounted on the upper part of the base 1. A third bearing seat 12 is provided on one inner wall of the support frame 11. A transmission shaft 13 is rotatably connected inside the third bearing seat 12. The end of the transmission shaft 13 extends to the outer wall of the other side of the support frame 11 and is fixedly connected to a knob 14. A worm gear 15 is coaxially fixedly connected to the transmission shaft 13. A worm wheel 16 is fixedly connected to the outer wall of the first rotating shaft 4. The worm gear 15 and the worm wheel 16 are meshed together. The support frame 11 is made of metal, such as stainless steel or carbon steel, and is fixed to the base 1 by welding or bolting. The third bearing seat 12 is a rolling bearing. The third bearing seat 12 provides rotational support for the transmission shaft 13, ensuring that the transmission shaft 13 can rotate smoothly and steadily. The transmission shaft 13 is made of stainless steel. The function of the transmission shaft 13 is to transmit the rotational motion of the knob 14. The worm gear 15 is passed to the worm wheel 16, which in turn drives the worm wheel 16 and the first rotating shaft 4 to rotate. The knob 14 is made of plastic or rubber and has anti-slip texture on its surface to facilitate the operator's rotation of the knob 14. By rotating the knob 14, the transmission shaft 13 can be rotated, thereby controlling the unfolding and folding action of the support column 5. The worm gear 15 is made of metal, such as stainless steel, and is fixed to the transmission shaft 13 by a key connection. The function of the worm gear 15 is to convert the rotational motion of the transmission shaft 13 into the rotational motion of the worm wheel 16. The worm wheel 16 is made of the same metal as the worm gear 15 and is fixed to the first rotating shaft 4 by a key connection. The worm gear 15 and the worm wheel 16 are meshed and connected. This worm gear 15 and worm wheel 16 transmission has a self-locking function, which can ensure that after the transmission shaft 13 stops rotating, the worm wheel 16 and the first rotating shaft 4 can remain in the current position, preventing the support column 5 from being accidentally unfolded or folded.

[0024] Please see Figure 1 and Figure 5A further embodiment of this solution is as follows: The lifting mechanism includes a first support plate 17 and a second support plate 18 disposed on the upper part of the receiving plate 9. A fourth bearing seat 19 is disposed on the surface of the first support plate 17. A lead screw 20, which passes through the second support plate 18, is rotatably connected inside the fourth bearing seat 19. A second knob 21 is disposed at the end of the lead screw 20. A drive seat 22, which is connected to the guide mechanism, is threadedly connected to the outer wall of the lead screw 20. The first support plate 17 and the second support plate 18 are made of metal, such as stainless steel, and are fixed to the receiving plate 9 by welding or bolting. The fourth bearing seat 19 uses the same rolling bearing as the third bearing seat 12. The fourth bearing seat 19 provides rotational support for the lead screw 20, ensuring that the lead screw 20... The screw 20 can rotate smoothly and steadily. The outer wall of the screw 20 is threadedly connected to the drive seat 22, which is connected to the guide mechanism. When the knob 21 is rotated, the screw 20 rotates, and the rotational motion is converted into the linear motion of the drive seat 22 through the threaded transmission. The knob 21 uses the same material and structure as the knob 14, which makes it easy for the operator to rotate the knob 21 to control the movement of the drive seat 22, thereby realizing the height adjustment of the guardrail 10. The drive seat 22 is made of metal, such as aluminum alloy, and is connected to the guide mechanism by bolts. The function of the drive seat 22 is to convert the rotational motion of the screw 20 into its own linear motion and drive the guide mechanism and the guardrail 10 to adjust the height.

[0025] Please see Figure 1 and Figure 5 A further embodiment of this solution is as follows: The guiding mechanism includes a slide rail 23 parallel to the lead screw 20. A slider 24 is slidably connected to the slide rail 23. A base 25 is provided at the upper end of the slider 24. A support rod 26 fixed to the side end of the drive seat 22 is connected to the side end of the base 25. The support rod 26 is connected to the guardrail 10 through a transmission structure. The slide rail 23 is made of metal, such as stainless steel, and is fixed to the support plate 9 by bolts. The slide rail 23 provides a sliding track for the slider 24, restricting the slider 24 to only move linearly along the direction of the slide rail 23. The base 25 is made of metal, such as aluminum alloy, and is fixed to the slider 24 by welding or bolts. The base 25 provides an installation support platform for the support rod 26. The support rod 26 is made of metal, such as stainless steel. The support rod 26 is connected to the guardrail 10 through a transmission structure, transmitting the movement of the drive seat 22 to the guardrail 10, thereby realizing the height adjustment of the guardrail 10.

[0026] Please see Figure 2A further embodiment of this solution is as follows: The transmission structure includes a hinge seat 27 disposed on the upper part of the support plate 9. The hinge seat 27 has a hinge shaft 28 disposed on its shaft contact surface. The outer wall of the hinge shaft 28 and the outer wall of the support rod 26 are provided with scissor rods 29. The scissor rods 29 are distributed along a direction perpendicular to the surface of the support plate 9. The uppermost scissor rod 29 is connected to the lower end of the guardrail 10. The hinge seat 27 is made of metal, such as stainless steel, and is fixed to the support plate 9 by welding or bolting. The hinge shaft 28 disposed on the shaft contact surface of the hinge seat 27 provides a hinge point for the scissor rods 29. When the drive seat 22 moves, the support rod 26 drives the scissor rods 29 to perform telescopic movement, thereby realizing the height adjustment of the guardrail 10. The design of the scissor rods 29 can ensure the stability of the guardrail 10 during the lifting process. At the same time, its structure is compact, which facilitates a large lifting stroke in a limited space.

[0027] Please see Figure 1 A further solution based on this embodiment is as follows: a warning light 30 with a built-in power supply is provided at the upper end of the guardrail 10. The warning light 30 is distributed along the long side of the guardrail 10. The warning light 30 adopts LED warning light 30. When the maintenance platform is in use, the warning light 30 lights up to serve as a warning and remind the surrounding personnel to pay attention to the existence of the maintenance platform. The built-in power supply is a rechargeable battery, which can ensure that the warning light 30 can work stably for a long time, and at the same time facilitates charging and maintenance.

[0028] Please see Figure 1 A further embodiment of this solution is as follows: A protrusion 31 is integrally fixed to the side end of the guardrail 10. A guide rod 32, which is fixed to the surface of the receiving plate 9, is slidably connected inside the protrusion 31. A limiting eave 33 is fixed to the end of the guide rod 32. The guide rod 32 is made of metal, such as stainless steel, and is fixed to the receiving plate 9 by welding or bolting. The guide rod 32 provides guidance for the lifting and lowering of the guardrail 10, ensuring that the guardrail 10 can maintain a stable direction during the lifting and lowering process and preventing the guardrail 10 from deviating. The protrusion 31 is made of the same metal as the guardrail 10 and is connected to the guardrail 10 by casting or machining. The guide rod 32 is slidably connected inside the protrusion 31, so that the guardrail 10 can move up and down along the guide rod 32. The limiting eave 33 limits the lifting and lowering height of the guardrail 10 and ensures the safety of the lifting and lowering of the guardrail 10.

[0029] Working principle: When the elevator car bottom maintenance platform is not in use and needs to be stored or transported, first operate the lifting mechanism and rotate knob 21. The lead screw 20 in the fourth bearing seat 19 on the support plate 17 will rotate accordingly. Through the threaded transmission, the drive seat 22, which is threaded to the lead screw 20, will move linearly along the guide mechanism. In the guide mechanism, the slider 24 on the slide rail 23 will slide, driving the base 25 and the scissor rod 29 connected to the drive seat 22 through the support rod 26 to move. The extension and retraction of the scissor rod 29 will lower the guardrail 10. At the same time, operate the drive mechanism and rotate knob 14. The transmission shaft 13 supported by the third bearing seat 12 in the bearing frame 11 will drive the worm gear 15 to rotate. The worm wheel 16 meshing with the worm gear 15 will drive the first rotating shaft 4 to rotate. The support column 5 on the first rotating shaft 4 will rotate around the axis, realizing the folding of the support column 5. With the lowering of the guardrail 10, the guardrail 10 will be folded and stored, saving space and facilitating storage and transportation.

[0030] When the maintenance platform is put into use, the reverse operation of the drive mechanism and lifting mechanism is performed. Rotating knob 14 causes the first rotating shaft 4 to drive the support column 5 to unfold through the transmission of worm gear 15 and worm wheel 16. Rotating knob 21 causes the lead screw 20 to rotate, causing the drive seat 22 to drive the scissor linkage 29 to extend and retract, raising the guardrail 10 to a suitable height. At this time, the LED warning light 30 at the top of the guardrail 10 lights up to remind the surrounding personnel to pay attention. The side protrusion 31 of the guardrail 10 slides along the guide rod 32, and the limiting eaves 33 limit its height, providing a safe and stable working environment for maintenance personnel.

[0031] 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. An elevator car bottom inspection platform with a folding guardrail, comprising a base (1) fixedly installed on the upper part of the inspection platform; characterized in that: A first U-shaped support seat (2) is fixedly connected to the upper end face of the base (1). An axial positioning groove is provided on the inner side wall of the first U-shaped support seat (2). A first bearing seat (3) is embedded in the groove. A first rotating shaft (4) extending to the outside of the first U-shaped support seat (2) is rotatably connected in the first bearing seat (3). A vertical support column (5) is fixedly installed on the radial peripheral wall of the first rotating shaft (4). A second rotating shaft (6) extending laterally is fixedly connected to the upper side wall of the support column (5). A second bearing seat (7) is installed at both ends of the second rotating shaft (6). The second bearing seat (7) is embedded in the shaft connection cavity preset in the inner wall of the second U-shaped support seat (8). A horizontal receiving plate (9) is fixedly connected to the upper surface of the second U-shaped support seat (8). A driving mechanism is also provided on the upper part of the base (1). The driving mechanism drives the first rotating shaft (4) to rotate around its own axis. A height-adjustable telescopic lifting mechanism is installed on the upper surface of the receiving plate (9). A guardrail (10) is fixedly connected to the output end of the lifting mechanism. By operating the drive mechanism, all support columns (5) are synchronously controlled to rotate around the first rotating shaft (4) axis, and the height retraction action is performed by operating the lifting mechanism, so that the guardrail (10) is folded and stored.

2. The elevator car bottom maintenance platform with folding guardrail according to claim 1, characterized in that: The drive mechanism includes a support frame (11) set on the upper part of the base (1). A third bearing seat (12) is provided on the inner wall of one side of the support frame (11). A drive shaft (13) is rotatably connected inside the third bearing seat (12). The end of the drive shaft (13) extends to the outer wall of the other side of the support frame (11) and is fixedly connected to a knob (14). A worm (15) is coaxially fixed to the drive shaft (13). A worm wheel (16) is fixedly connected to the outer wall of the first rotating shaft (4). The worm (15) and the worm wheel (16) are meshed and connected.

3. The elevator car bottom maintenance platform with folding guardrail according to claim 2, characterized in that: The lifting mechanism includes a support plate 1 (17) and a support plate 2 (18) set on the upper part of the receiving plate (9). A fourth bearing seat (19) is provided on the surface of the support plate 1 (17). A screw rod (20) that passes through the support plate 2 (18) is rotatably connected inside the fourth bearing seat (19). A knob 2 (21) is provided at the end of the screw rod (20). A drive seat (22) that is connected to the guide mechanism is threaded on the outer wall of the screw rod (20).

4. The elevator car bottom maintenance platform with folding guardrail according to claim 3, characterized in that: The guiding mechanism includes a slide rail (23) arranged parallel to the lead screw (20), a slider (24) slidably connected on the slide rail (23), a base (25) provided at the upper end of the slider (24), a support rod (26) fixedly connected to the side end of the base (25) and the support rod (26) is connected to the side end of the drive seat (22) through a transmission structure.

5. An elevator car bottom maintenance platform with a folding guardrail according to claim 4, characterized in that: The transmission structure includes a hinge seat (27) set on the upper part of the support plate (9). The hinge seat (27) has a hinge shaft (28) on its shaft contact surface. The outer wall of the hinge shaft (28) and the outer wall of the support rod (26) are provided with scissor rods (29). The scissor rods (29) are distributed along a direction perpendicular to the surface of the support plate (9). The uppermost scissor rod (29) is connected to the lower end of the guardrail (10).

6. An elevator car bottom maintenance platform with a folding guardrail according to claim 5, characterized in that: The upper end of the guardrail (10) is equipped with a warning light (30) with a built-in power supply, and the warning light (30) is distributed along the long side of the guardrail (10).

7. An elevator car bottom maintenance platform with a folding guardrail according to claim 6, characterized in that: The side end of the guardrail (10) is integrally fixed with a protrusion (31), and a guide rod (32) that is fixed to the surface of the receiving plate (9) is slidably connected inside the protrusion (31). The end of the guide rod (32) is fixed with a limit eave (33).

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