Telescopic car roof guardrail

Abstract

The utility model discloses a telescopic car top guardrail which comprises a guardrail body formed by sequentially connecting a plurality of guardrail frames, the guardrail frames are distributed up and down in the height direction, mounting feet are arranged at the two ends of each guardrail frame, and sliding ways are formed on the inner sides of the mounting feet. The adjacent guardrail frames are nested inside and outside through the mounting feet and the slideways and are connected in a sliding manner; positioning holes are formed in the mounting feet at the two ends of each guardrail frame, and bolts are connected between the mounting feet of the adjacent guardrail frames in a buckled mode through the positioning holes. The guardrail frame at the bottom of the guardrail body is rotationally connected with a buckle plate through a first positioning screw, and the upper end of the buckle plate extends to the guardrail frame at the top of the guardrail body and is detachably connected with the guardrail frame through a second positioning screw. According to the utility model, the occupation of the top space of the elevator hoistway can be reduced.

Description

Technical Field

[0001] The utility model relates to a car top guardrail, in particular to a telescopic car top guardrail. Background Art

[0002] In order to ensure the safety of maintenance personnel when performing maintenance on the car top, car top guardrails are usually installed around the top of the elevator car to protect maintenance personnel and prevent them from slipping and falling from the top of the car. The existing car top guardrails are all fixed guardrail structures welded from pipes. After the guardrail structure is built, the top of the elevator shaft needs to leave a height space to accommodate the car top guardrail, thereby increasing the design height of the elevator shaft. If the height of the car top guardrail is shortened, its protective effect will be greatly reduced, making it difficult to meet the manufacturer's safety requirements.

[0003] Therefore, the existing car top guardrail will have the problem of occupying the top space of the elevator shaft. Utility Model Content

[0004] The purpose of the utility model is to provide a telescopic car top guardrail, which can reduce the occupation of the top space of the elevator shaft.

[0005] The technical solution of the utility model: a telescopic car roof guardrail, comprising a guardrail body formed by a plurality of guardrail frames connected in sequence, the plurality of guardrail frames being distributed up and down along the height direction, mounting feet being provided at both ends of each guardrail frame, a slide being formed on the inner side of the mounting feet, adjacent guardrail frames being nested and slidably connected via the mounting feet and the slide; positioning holes being provided on the mounting feet at both ends of each guardrail frame, the mounting feet of adjacent guardrail frames being buckled and connected with latches via the positioning holes; a buckle plate being rotatably connected to the guardrail frame at the bottom of the guardrail body via a first positioning screw, the upper end of the buckle plate extending to the guardrail frame at the top of the guardrail body and being detachably connected to the guardrail frame via a second positioning screw.

[0006] In the aforementioned retractable car roof guardrail, a long strip-shaped mounting hole is provided at the lower end of the gusset plate, and the end of the first positioning screw passes through the mounting hole and is threadedly connected to the guardrail frame; a U-shaped limiting groove is provided at the upper end of the gusset plate, and the end of the second positioning screw passes through the limiting groove and is threadedly connected to the guardrail frame, and the lower end of the limiting groove is connected to the outside through an opening.

[0007] In the aforementioned retractable car roof guardrail, the buckle plate on one side of the mounting hole extends outward and forms a trigger part, and a travel switch that cooperates with the trigger part is connected to the guardrail frame at the bottom of the guardrail body. When the limit groove on the upper end of the buckle plate is engaged with the second positioning screw, the travel switch and the trigger part are attached to each other and triggered.

[0008] In the aforementioned telescopic car roof guardrail, the guardrail frame is formed by splicing rectangular tubes, and the mounting feet of different guardrail frames are processed from rectangular tubes of different sizes.

[0009] In the aforementioned telescopic car roof guardrail, an observation port is provided on the mounting foot below the positioning hole, and when the bottom of the upper mounting foot is located at the observation port of the lower mounting foot, the positioning holes of the two mounting feet are connected to each other.

[0010] In the aforementioned retractable car roof guardrail, a slot is provided at the bottom of the mounting foot, and a spring sheet detachably connected to the inner wall of the mounting foot is provided on the inner side of the slot, and one end of the spring sheet passes through the slot and extends to the outside; when the spring sheet at the bottom of the upper mounting foot is buckled and connected to the observation port of the lower mounting foot, the positioning holes of the two mounting feet are connected to each other.

[0011] In the aforementioned telescopic car roof guardrail, the spring sheet is formed by bending a metal sheet, and the outer end of the metal sheet forms an inverted triangle for buckling and connecting the observation port.

[0012] Compared with the prior art, the utility model has the following characteristics:

[0013] (1) The utility model defines the connection structure of the guardrail frame so that each guardrail frame can be interlocked and slidably connected through the installation feet. When the guardrail body is not in use, each guardrail frame can be in a retracted state and reduce the space occupied by the elevator shaft. When the guardrail body is in use, the maintenance personnel can manually pull out the guardrail frame and fix it in place, thereby achieving the protective effect of the guardrail body. On this basis, the structural cooperation of the positioning hole and the latch can ensure that the guardrail frames are fixed to each other after being extended. The cooperation of the buckle plate, the first positioning screw and the second positioning screw can limit the guardrail frame when it is in a retracted state, thereby preventing the guardrail frame from loosening and falling out, thereby improving the stability of the utility model.

[0014] (2) By optimizing the buckle plate connection structure, maintenance personnel only need to slightly adjust the first positioning screw and the second positioning screw to lock and unlock the buckle plate during operation, so there is no need to completely unscrew the screw, which is convenient for maintenance personnel to operate; on this basis, through the cooperation of the trigger part and the travel switch, the telescopic state of the guardrail frame can also be detected, that is, when the guardrail frame is in the extended state, the trigger part and the travel switch are separated from each other, and the travel switch alarms or stops the elevator, thereby effectively avoiding the normal lifting of the elevator car when the guardrail frame is in the extended state, resulting in the guardrail frame and the top of the elevator shaft colliding with each other, further improving the safety of the utility model;

[0015] (3) When the guardrail is extended, the observation port is set so that the maintenance personnel can judge whether the guardrail is fully extended by observing the height of the mounting feet, thereby facilitating the positioning of the guardrail. On this basis, the spring piece and the observation port cooperate with each other, so that the spring piece can automatically engage the observation port after the guardrail is fully extended, thereby prompting the maintenance personnel on the one hand and preventing the maintenance personnel from directly pulling out the guardrail on the other hand, that is, improving the use effect of the maintenance personnel;

[0016] Therefore, the utility model can reduce the occupation of the top space of the elevator shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the structure of Example 1 in a contracted state;

[0018] Figure 2 yes Figure 1 A-direction enlarged view;

[0019] Figure 3 is a schematic diagram of the structure of Embodiment 1 in the extended state;

[0020] Figure 4 is a schematic diagram of the structure of Example 2 in a contracted state;

[0021] Figure 5 It is a schematic diagram of the buckling of the spring piece and the observation port in Example 2.

[0022] The marks in the accompanying drawings are: 1-guardrail frame, 2-guardrail body, 3-mounting foot, 4-positioning hole, 5-latch, 6-first positioning screw, 7-buckle plate, 8-second positioning screw, 9-travel switch, 10-observation port, 11-spring, 701-mounting hole, 702-limiting groove, 703-opening, 704-trigger part. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0024] Embodiment 1. A telescopic car top guardrail is constructed as follows Figure 1-3As shown, it includes a guardrail body 2 formed by three guardrail frames 1 connected in sequence, the three guardrail frames 1 are distributed up and down along the height direction, and both ends of each guardrail frame 1 are provided with mounting feet 3, the inner side of the mounting feet 3 forms a slideway, and the adjacent guardrail frames 1 are nested and slidably connected through the mounting feet 3 and the slideway; positioning holes 4 are provided on the mounting feet 3 at both ends of each guardrail frame 1, and the mounting feet 3 of adjacent guardrail frames 1 are buckled and connected with pins 5 through the positioning holes 4; the guardrail frame 1 at the bottom of the guardrail body 2 is rotatably connected with a buckle plate 7 through a first positioning screw 6, and the upper end of the buckle plate 7 extends to the guardrail frame 1 at the top of the guardrail body 2 and is detachably connected to the guardrail frame 1 through a second positioning screw 8.

[0025] A box for placing a latch 5 is provided on the outer wall of the mounting foot 3 at the bottom of the guardrail body 2 .

[0026] The lower end of the buckle plate 7 is provided with a long strip of mounting hole 701, and the end of the first positioning screw 6 passes through the mounting hole 701 and is threadedly connected to the guardrail frame 1; the upper end of the buckle plate 7 is provided with a U-shaped limiting groove 702, and the end of the second positioning screw 8 passes through the limiting groove 702 and is threadedly connected to the guardrail frame 1, and the lower end of the limiting groove 702 is connected to the outside through the opening 703.

[0027] The guardrail frame 1 is provided with an installation opening for installing a travel switch 9 on a side close to the gusset plate 7 .

[0028] The guardrail frame 1 is formed by splicing rectangular tubes, and the mounting feet 3 of different guardrail frames 1 are processed from rectangular tubes of different sizes.

[0029] An observation port 10 is provided on the mounting foot 3 below the positioning hole 4. When the bottom of the upper mounting foot 3 is located at the observation port 10 of the lower mounting foot 3, the positioning holes 4 of the two mounting feet 3 are connected to each other.

[0030] When in use, the maintenance personnel first loosen the first positioning screw 6 and the second positioning screw 8, then lift the buckle plate 7 so that the opening 703 is flush with the second positioning screw 8 after lifting, and then rotate the buckle plate 7 so that the buckle plate 7 is separated from the second positioning screw 8 through the opening 703 after rotation, thereby unlocking the buckle plate 7.

[0031] After the gusset plate 7 is unlocked, the maintenance personnel lift the two upper guardrail frames 1 together and observe the extended position of the mounting feet 3 from the observation port 10. When the bottom surface of the mounting feet 3 rises to the middle position of the observation port 10, the positioning holes 4 of the two mounting feet 3 are aligned with each other, and then the maintenance personnel inserts the latch 5 into the positioning hole 4 to limit the guardrail frame 1 after extension, so that the guardrail frame 1 remains extended. After the guardrail frame 1 is extended, the maintenance personnel extends and limits the top guardrail frame 1 in the same way, thereby extending the guardrail body 2.

[0032] When the inspection is completed, the maintenance personnel can retract the guardrail body 2 in the same way and lock it with the buckle plate 7 after the guardrail body 2 is retracted, thereby ensuring the stability of the guardrail body 2 in the retracted state and preventing the guardrail frame 1 from loosening or sliding out in this state.

[0033] Embodiment 2. A telescopic car top guardrail is constructed as follows Figure 4-5 As shown, it includes a guardrail body 2 formed by three guardrail frames 1 connected in sequence, the three guardrail frames 1 are distributed up and down along the height direction, and both ends of each guardrail frame 1 are provided with mounting feet 3, the inner side of the mounting feet 3 forms a slideway, and the adjacent guardrail frames 1 are nested and slidably connected through the mounting feet 3 and the slideway; positioning holes 4 are provided on the mounting feet 3 at both ends of each guardrail frame 1, and the mounting feet 3 of adjacent guardrail frames 1 are buckled and connected with pins 5 through the positioning holes 4; the guardrail frame 1 at the bottom of the guardrail body 2 is rotatably connected with a buckle plate 7 through a first positioning screw 6, and the upper end of the buckle plate 7 extends to the guardrail frame 1 at the top of the guardrail body 2 and is detachably connected to the guardrail frame 1 through a second positioning screw 8.

[0034] A box for placing a latch 5 is provided on the outer wall of the mounting foot 3 at the bottom of the guardrail body 2 .

[0035] The lower end of the buckle plate 7 is provided with a long strip of mounting hole 701, and the end of the first positioning screw 6 passes through the mounting hole 701 and is threadedly connected to the guardrail frame 1; the upper end of the buckle plate 7 is provided with a U-shaped limiting groove 702, and the end of the second positioning screw 8 passes through the limiting groove 702 and is threadedly connected to the guardrail frame 1, and the lower end of the limiting groove 702 is connected to the outside through the opening 703.

[0036] The buckle plate 7 on one side of the mounting hole 701 extends outward to form a trigger portion 704, and a travel switch 9 cooperating with the trigger portion 704 is connected to the guardrail frame 1 at the bottom of the guardrail body 2. When the limit groove 702 at the upper end of the buckle plate 7 is engaged with the second positioning screw 8, the travel switch 9 and the trigger portion 704 are attached to each other and triggered.

[0037] The guardrail frame 1 is provided with an installation opening for installing a travel switch 9 on one side close to the gusset plate 7. The travel switch 9 is used to alarm or stop the elevator in a non-contact state.

[0038] The guardrail frame 1 is formed by splicing rectangular tubes, and the mounting feet 3 of different guardrail frames 1 are processed from rectangular tubes of different sizes.

[0039] An observation port 10 is provided on the mounting foot 3 below the positioning hole 4. When the bottom of the upper mounting foot 3 is located at the observation port 10 of the lower mounting foot 3, the positioning holes 4 of the two mounting feet 3 are connected to each other.

[0040] A card slot is provided at the bottom of the mounting foot 3, and a spring sheet 11 detachably connected to the inner wall of the mounting foot 3 is provided on the inner side of the card slot, and one end of the spring sheet 11 passes through the card slot and extends to the outside; when the spring sheet 11 at the bottom of the upper mounting foot 3 is buckled and connected to the observation port 10 of the lower mounting foot 3, the positioning holes 4 of the two mounting feet 3 are connected to each other.

[0041] The spring piece 11 is formed by bending a metal sheet, and the outer end of the metal sheet forms an inverted triangle for buckling and connecting with the observation port 10 .

[0042] Compared with Example 1, this embodiment limits the structure of the trigger part 704 and the travel switch 9, so that when the buckle plate 7 is in the unlocked state, it can trigger the travel switch 9 to alarm or stop the elevator, thereby preventing the maintenance personnel from forgetting to retract the guardrail body 2 after completing the maintenance, causing the guardrail body 2 to collide during the subsequent use of the elevator, thereby improving the operating stability of the elevator.

[0043] By setting the spring piece 11 on the mounting foot 3, the guardrail frame 1 can be immediately buckled at the observation port 10 and form a limit position after being extended to the full extent, that is, on the one hand, it reminds the maintenance personnel that the guardrail frame 1 has been extended to the full extent, and on the other hand, it prevents the guardrail frame 1 from directly detaching from the lower guardrail frame 1 after being over-extended, that is, it improves the convenience of operating the guardrail body 2. When the mounting foot 3 needs to be retracted, the spring piece 11 can be retracted inwardly, thereby ensuring the normal retraction of the mounting foot 3.

Claims

1. Telescopic car top guardrail, characterized by: The invention comprises a guardrail body (2) formed by connecting a plurality of guardrail frames (1) in sequence, wherein the plurality of guardrail frames (1) are distributed vertically in the vertical direction, and mounting feet (3) are provided at both ends of each guardrail frame (1), and a slideway is formed on the inner side of the mounting feet (3), and adjacent guardrail frames (1) are nested and slidably connected via the mounting feet (3) and the slideway; positioning holes (4) are provided on the mounting feet (3) at both ends of each guardrail frame (1), and a latch (5) is connected between the mounting feet (3) of adjacent guardrail frames (1) via the positioning holes (4); a buckle plate (7) is rotatably connected to the guardrail frame (1) at the bottom of the guardrail body (2) via a first positioning screw (6), and the upper end of the buckle plate (7) extends to the guardrail frame (1) at the top of the guardrail body (2) and is detachably connected to the guardrail frame (1) via a second positioning screw (8).

2. The telescopic car roof guardrail according to claim 1, characterized in that: The lower end of the buckle plate (7) is provided with a long strip-shaped mounting hole (701), and the end of the first positioning screw (6) passes through the mounting hole (701) and is threadedly connected to the guardrail frame (1); the upper end of the buckle plate (7) is provided with a U-shaped limiting groove (702), and the end of the second positioning screw (8) passes through the limiting groove (702) and is threadedly connected to the guardrail frame (1), and the lower end of the limiting groove (702) is connected to the outside through an opening (703).

3. The telescopic car roof guardrail according to claim 2, characterized in that: The buckle plate (7) on one side of the mounting hole (701) extends outward to form a trigger portion (704), and a travel switch (9) matching the trigger portion (704) is connected to the guardrail frame (1) at the bottom of the guardrail body (2). When the limit groove (702) at the upper end of the buckle plate (7) and the second positioning screw (8) are engaged with each other, the travel switch (9) and the trigger portion (704) are attached to each other and triggered.

4. The retractable car roof guardrail according to claim 1, characterized in that: The guardrail frame (1) is formed by splicing rectangular tubes, and the mounting feet (3) of different guardrail frames (1) are processed from rectangular tubes of different sizes.

5. The retractable car roof guardrail according to claim 1, characterized in that: An observation port (10) is provided on the mounting foot (3) below the positioning hole (4); when the bottom of the upper mounting foot (3) is located at the observation port (10) of the lower mounting foot (3), the positioning holes (4) of the two mounting feet (3) are connected to each other.

6. The telescopic car roof guardrail according to claim 5, characterized in that: A slot is provided at the bottom of the mounting foot (3), and a spring sheet (11) is provided inside the slot and is detachably connected to the inner wall of the mounting foot (3), and one end of the spring sheet (11) passes through the slot and extends to the outside; when the spring sheet (11) at the bottom of the upper mounting foot (3) is buckled and connected to the observation port (10) of the lower mounting foot (3), the positioning holes (4) of the two mounting feet (3) are connected to each other.

7. The telescopic car roof guardrail according to claim 6, characterized in that: The spring sheet (11) is formed by bending a metal sheet, and the outer end of the metal sheet forms an inverted triangle for buckling and connecting with the observation port (10).

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