Safety protection platform for elevator shaft installation

Abstract

The utility model relates to the technical field of safety protection platforms, and discloses a safety protection platform for elevator shaft installation, which comprises a limiting cross rod, side sliding grooves are respectively arranged at two ends of the limiting cross rod in a penetrating way, and a plurality of limiting blocks are fixedly connected with the inner wall of one end of each side sliding groove close to an opening. The limiting cross rod comprises an extension rod, a positioning bolt and a bearing column, square grooves are formed in the two sides of the top and the bottom of the extension rod, and the extension rod is connected into the side sliding grooves in a penetrating and sliding mode. A positioning bolt is rotated to enter a positioning hole in the outer end of an extension rod and further penetrate through the outer end of the extension rod to enter a wall to position the limiting cross rod, and the length of the limiting cross rod can be flexibly changed through sliding adjustment of the extension rod and the limiting cross rod and bolt fixing; and the device can be adapted to lateral openings of elevator hoistways with different widths.

Description

Technical Field

[0001] This utility model relates to the field of safety protection platform technology, and in particular to a safety protection platform for elevator shaft installation. Background Technology

[0002] Elevator shafts are vertically connected high-altitude work areas. Without safety platforms, workers could easily fall from the shaft opening or the middle of the shaft to the bottom floor due to missteps or operational errors, resulting in serious injury or death. Safety platforms, by constructing horizontal protective surfaces (such as steps or safety nets) within the shaft, form an "intermediate barrier." Even if a person falls accidentally, the platform will catch them, significantly reducing the fall height and the risk of injury. Safety platforms also provide installation personnel with a stable standing and operating space, facilitating high-altitude operations such as guide rail bracket installation, cable laying, and car assembly.

[0003] An existing telescopic combined protective platform device for elevator shafts (publication number: CN116498052A) has at least the following drawbacks: the lateral opening size of the elevator shaft varies, and the length of the fixed crossbeam is limited, making it impossible to adjust according to the lateral opening size of different elevator shafts. The lack of an effective crossbeam opening on the protective platform can easily cause commissioning personnel to lose reliable support points when climbing in the shaft, which can easily lead to a reduction in protective performance. Although the limiting main beam in this device is adjustable, after the supporting main beam is suspended in the elevator shaft, the installer needs to move to one side of the limiting main beam to adjust and fix it, which poses a certain safety hazard to the installer. If the limiting main beam is fixed in advance, it can easily lead to deviations in length, requiring repeated adjustments, which is time-consuming, labor-intensive, and cumbersome. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a safety protection platform for elevator shaft installation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A safety protection platform for elevator shaft installation includes a limiting crossbar. Side sliding grooves are respectively opened through both ends of the limiting crossbar. Several limiting blocks are fixedly connected to the inner wall of the side sliding groove near its opening. The limiting crossbar includes an extension rod, a positioning bolt, and supporting columns. Square grooves are opened on both the top and bottom sides of the extension rod, which is slidably connected within the side sliding grooves. Several limiting blocks are slidably connected within several of the square grooves. Several positioning holes are equidistantly opened through both the extension rod and the limiting crossbar. The extension rod and the limiting crossbar are fixedly connected by bolts through the positioning holes. The column of the positioning bolt is threadedly connected to the positioning hole at the outer end of the extension rod. Several supporting columns are integrally fixedly connected to one side of the limiting crossbar, and several corner brackets are provided on the side of the limiting crossbar near the supporting columns.

[0007] As a further embodiment of this utility model, a plurality of screws at one end of the corner brackets pass through the positioning holes on the limiting crossbar and are fixedly connected by nuts. A shaft column is fixedly connected to both sides of the corner brackets. A clamping plate is provided on the bottom side of the corner brackets. A plurality of springs are fixedly connected to one side of the clamping plate. The other end of the springs is fixedly connected to one side of the corner brackets. A rotating bolt is provided on the side of the corner brackets away from the springs.

[0008] As a further embodiment of this utility model, the screw of the rotating bolt is threadedly connected to the vertical plate of the corner bracket, one end of the screw of the rotating bolt abuts against the clamping plate, the rotating bolt is located between several springs, a first beam and a second beam are provided on one side of the limiting crossbar, several corner brackets are inserted into the grooves at one end of the first beam and the second beam, and a slot is provided at the bottom of one end of the first beam and the second beam.

[0009] As a further embodiment of this utility model, the slot is rotatably sleeved on the shaft column, the structure of the second beam frame is the same as that of the first beam frame, and a sliding groove is provided through one end of the first beam frame away from the limiting crossbar. The first beam frame includes a sliding rod and a wall plate, the wall plate is fixedly connected to the tail end of the sliding rod and fits against the tail end of the first beam frame, and the sliding rod is slidably connected in the sliding groove.

[0010] As a further embodiment of this utility model, a first telescopic rod, several second telescopic rods, and a third telescopic rod are provided between the first beam frame and the second beam frame. The two ends of the first telescopic rod are respectively fixedly connected to the inner sides of the first beam frame and the second beam frame. A placement frame is fixedly connected to one side of the first telescopic rod. The bottom groove of the placement frame fits into the support column. The two ends of the third telescopic rod are respectively fixedly connected between the abutment plates of the first beam frame and the second beam frame.

[0011] As a further embodiment of this utility model, the two ends of a plurality of second telescopic rods are respectively fixedly connected to the inner sides of the first beam frame and the second beam frame. The second telescopic rods are located between the first telescopic rods and the third telescopic rods. A plurality of driving cylinders are provided between the first beam frame and the second beam frame. One end of the driving cylinder is fixedly connected to the outer side of the second telescopic rod, and the telescopic end of the driving cylinder is fixedly connected to one side of the third telescopic rod.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The side sliding grooves at both ends of the limiting crossbar provide a sliding track for the extension rod. The square grooves on the top and bottom sides of the extension rod cooperate with the limiting blocks in the side sliding grooves, so that the extension rod can only slide along the direction of the side sliding groove, ensuring the stability and guidance of the sliding. When the extension rod slides to the appropriate position, the positioning holes aligned with the extension rod and the limiting crossbar are fixed by bolts, realizing the adjustment of the overall length of the limiting crossbar. Rotating the positioning bolt into the positioning hole at the outer end of the extension rod further penetrates the outer end of the extension rod into the wall to position the limiting crossbar. Through the sliding adjustment of the extension rod and the limiting crossbar and the bolt fixing, the length of the limiting crossbar can be flexibly changed, which can adapt to the side openings of elevator shafts of different widths and improve the versatility of the protective platform.

[0014] 2. After the drive cylinder starts, it pushes the third telescopic rod through the extension and retraction of the telescopic end. Since the third telescopic rod is fixedly connected to the wall plate of the sliding rod, when the third telescopic rod is pushed by the extension and retraction end of the drive cylinder, it drives the sliding rod to move forward, causing the sliding rod to move out of the sliding groove and drive the wall plate to abut against the wall of the elevator shaft, stabilizing the first beam frame and the second beam frame, which facilitates the subsequent laying of the foot pedals. When the angle frame adjusts the distance between them according to the internal dimensions of the elevator shaft, it stretches the second beam frame, which drives the retraction rods of the first, second and third telescopic rods to stretch, extending the length between the first and second beam frames, which facilitates the balanced force on the foot pedals. This setting is conducive to quick installation by a single installer, saving time and effort, ensuring the personal safety of the installer, and the setting of multiple telescopic rods makes the platform support more stable and increases the load-bearing capacity of the platform. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a safety protection platform for elevator shaft installation proposed in this utility model;

[0016] Figure 2 This utility model provides a structural schematic diagram of a limiting crossbar for a safety protection platform installed in an elevator shaft.

[0017] Figure 3 A schematic diagram of the corner frame of a safety protection platform for elevator shaft installation proposed in this utility model;

[0018] Figure 4 A schematic diagram of the first beam frame of a safety protection platform for elevator shaft installation proposed in this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the first telescopic rod of a safety protection platform for elevator shaft installation proposed in this utility model.

[0020] In the diagram: 1. Limiting crossbar; 101. Side sliding groove; 102. Limiting block; 103. Extension rod; 104. Square groove; 105. Positioning hole; 106. Positioning bolt; 107. Support column; 2. Corner frame; 201. Shaft column; 202. Spring; 203. Clamping plate; 204. Rotating bolt; 3. First beam frame; 301. Slot; 302. Sliding groove; 303. Sliding rod; 304. Wall-holding plate; 4. First telescopic rod; 401. Placement frame; 5. Second telescopic rod; 6. Drive cylinder; 7. Third telescopic rod; 8. Second beam frame. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Reference Figures 1-5A safety protection platform for elevator shaft installation includes a limiting crossbar 1. Side sliding grooves 101 are respectively opened through both ends of the limiting crossbar 1. Several limiting blocks 102 are fixedly connected to the inner wall of the side sliding groove 101 near the opening. The limiting crossbar 1 includes an extension rod 103, a positioning bolt 106, and a receiving column 107. Square grooves 104 are opened on both the top and bottom sides of the extension rod 103. The extension rod 103 is slidably connected within the side sliding groove 101, and the several limiting blocks 102 are all slidably connected. Connected within several square slots 104, the extension rod 103 and the limiting crossbar 1 are provided with several positioning holes 105 at equal intervals. The extension rod 103 and the limiting crossbar 1 are fixedly connected by bolts through the positioning holes 105. The column of the positioning bolt 106 is threadedly connected to the positioning hole 105 at the outer end of the extension rod 103. Several supporting columns 107 are integrally fixedly connected to one side of the limiting crossbar 1. Several corner brackets 2 are provided on the side of the limiting crossbar 1 near the supporting columns 107.

[0025] In use, the side sliding grooves 101 at both ends of the limiting crossbar 1 provide a sliding track for the extension rod 103. The square grooves 104 on both sides of the top and bottom of the extension rod 103 cooperate with the limiting blocks 102 in the side sliding grooves 101, so that the extension rod 103 can only slide along the direction of the side sliding grooves 101, ensuring the stability and guidance of the sliding. When the extension rod 103 slides to the appropriate position, the positioning hole 105 aligned with the extension rod 103 on the limiting crossbar 1 is fixed by bolts, realizing the adjustment of the overall length of the limiting crossbar 1. The positioning bolt 106 is rotated into the positioning hole 105 at the outer end of the extension rod 103, further penetrating the outer end of the extension rod 103 into the wall, positioning the limiting crossbar 1. Through the sliding adjustment and bolt fixing of the extension rod 103 and the limiting crossbar 1, the length of the limiting crossbar 1 can be flexibly changed, which can adapt to the side openings of elevator shafts of different widths and improve the versatility of the protective platform.

[0026] In this embodiment, screws at one end of several corner brackets 2 pass through positioning holes 105 on the limiting crossbar 1 and are fixedly connected by nuts. Both sides of the corner brackets 2 are fixedly connected with shaft columns 201. A clamping plate 203 is provided on the bottom side of the corner brackets 2. Several springs 202 are fixedly connected to one side of the clamping plate 203. The other end of the springs 202 is fixedly connected to one side of the corner brackets 2. A rotating bolt 204 is provided on the side of the corner brackets 2 away from the springs 202.

[0027] In use, the screw at one end of the corner bracket 2 passes through the positioning hole 105 on the limiting crossbar 1 and is tightened with a nut to connect the corner bracket 2 and the limiting crossbar 1. The shaft columns 201 on both sides of the corner bracket 2 are used for subsequent connection with the first beam frame 3 and the second beam frame 8. After the corner bracket 2 is fixedly connected to the limiting crossbar 1, the corner bracket 2 is stuck at the edge of the elevator shaft opening on the ground. The installer manually rotates the rotating bolt 204, the screw of the rotating bolt 204 is screwed into the vertical plate of the corner bracket 2 and pushes the clamping plate 203. The clamping plate 203 moves forward and stretches the spring 202, so that the clamping plate 203 abuts against the edge of the elevator shaft opening on the ground, fixing the limiting crossbar 1 in place, preventing the limiting crossbar 1 from shaking and displacing, and improving the stability of the protective platform.

[0028] In this embodiment, the screw of the rotating bolt 204 is threadedly connected to the vertical plate of the corner bracket 2. One end of the screw of the rotating bolt 204 abuts against the clamping plate 203. The rotating bolt 204 is located between several springs 202. A first beam frame 3 and a second beam frame 8 are provided on one side of the limiting crossbar 1. Several corner brackets 2 are inserted into the grooves at one end of the first beam frame 3 and the second beam frame 8. A slot 301 is provided at the bottom of one end of the first beam frame 3 and the second beam frame 8.

[0029] In use, the slots 301 at one end of the first beam frame 3 and the second beam frame 8 are fitted onto the shaft columns 201 on both sides of the corner frame 2, realizing the rotatable connection between the first beam frame 3, the second beam frame 8 and the corner frame 2. This allows the first beam frame 3 and the second beam frame 8 to rotate around the shaft column 201 and adjust their angles. The rotatable connection design between the slots 301 and the shaft column 201 allows the first beam frame 3 and the second beam frame 8 to flexibly adjust their angles to adapt to the complex spatial structure of the elevator shaft and different installation requirements. The sliding rod 303 and the sliding groove 302 work together to adjust the length of the first beam frame 3, further enhancing the adaptability of the protective platform to different shaft sizes and improving the flexibility and convenience of platform installation.

[0030] In this embodiment, the slot 301 is rotated and sleeved on the shaft column 201. The structure of the second beam frame 8 is the same as that of the first beam frame 3. The end of the first beam frame 3 away from the limiting crossbar 1 is provided with a sliding groove 302. The first beam frame 3 includes a sliding rod 303 and a wall abutment plate 304. The wall abutment plate 304 is fixedly connected to the tail end of the sliding rod 303 and fits against the tail end of the first beam frame 3. The sliding rod 303 is slidably connected in the sliding groove 302.

[0031] In use, the sliding groove 302 at the end of the first beam frame 3 away from the limiting crossbar 1 is used to accommodate the sliding rod 303. The sliding rod 303 slides in the sliding groove 302, which drives the wall abutment plate 304 to move and abut against the wall of the elevator shaft, thus fixing the position of the first beam frame 3 and the second beam frame 8. Adjusting the length of the first beam frame 3 can adapt to different installation spaces and shaft sizes.

[0032] In this embodiment, a first telescopic rod 4, several second telescopic rods 5 and a third telescopic rod 7 are provided between the first beam frame 3 and the second beam frame 8. The two ends of the first telescopic rod 4 are respectively fixedly connected to the inner sides of the first beam frame 3 and the second beam frame 8. A placement frame 401 is fixedly connected to one side of the first telescopic rod 4. The bottom groove of the placement frame 401 fits against the support column 107. The two ends of the third telescopic rod 7 are respectively fixedly connected between the wall plates 304 of the first beam frame 3 and the second beam frame 8.

[0033] In use, the slots 301 of the first beam frame 3 and the second beam frame 8 rotate around the axis column 201 of the corner frame 2. The rotation of the first beam frame 3 and the second beam frame 8 drives the first telescopic rod 4, the second telescopic rod 5 and the third telescopic rod 7 into the elevator shaft. At the same time, the placement bracket 401 on one side of the first telescopic rod 4 is located on the top of the receiving column 107, which limits the first beam frame 3 and the second beam frame 8 to prevent the first beam frame 3 and the second beam frame 8 from falling after rotation and affecting subsequent installation.

[0034] In this embodiment, the two ends of several second telescopic rods 5 are respectively fixedly connected to the inner sides of the first beam frame 3 and the second beam frame 8. The second telescopic rods 5 are located between the first telescopic rods 4 and the third telescopic rods 7. Several driving cylinders 6 are provided between the first beam frame 3 and the second beam frame 8. One end of the driving cylinder 6 is fixedly connected to the outer side of the second telescopic rod 5, and the telescopic end of the driving cylinder 6 is fixedly connected to one side of the third telescopic rod 7.

[0035] In use, after the drive cylinder 6 is started, it pushes the third telescopic rod 7 through the extension and retraction of the telescopic end. Since the third telescopic rod 7 is fixedly connected to the wall plate 304 of the slide rod 303, when the third telescopic rod 7 is pushed by the extension and retraction end of the drive cylinder 6, it drives the slide rod 303 to move forward, so that the slide rod 303 moves out of the sliding groove 302 and drives the wall plate 304 to abut against the wall of the elevator shaft, which stabilizes the first beam frame 3 and the second beam frame 8, making it easier to lay the foot pedals. When the angle frame 2 adjusts the distance between them according to the internal dimensions of the elevator shaft, it stretches the second beam frame 8, which drives the retracted rods of the first telescopic rod 4, the second telescopic rod 5 and the third telescopic rod 7 to stretch, extending the length between the first beam frame 3 and the second beam frame 8, making it easier for the foot pedals to bear the force evenly. Moreover, the setting of multiple telescopic rods makes the platform support more stable and increases the load-bearing capacity of the platform.

[0036] From the above description, it can be seen that the above-described embodiments of this utility model achieve the following technical effects: the side sliding grooves 101 at both ends of the limiting crossbar 1 provide a sliding track for the extension rod 103; the square grooves 104 on both sides of the top and bottom of the extension rod 103 cooperate with the limiting blocks 102 in the side sliding grooves 101, so that the extension rod 103 can only slide along the direction of the side sliding grooves 101, ensuring the stability and guidance of the sliding; when the extension rod 103 slides to a suitable position, the positioning holes 105 aligned with the limiting crossbar 1 are fixed by bolts, thereby adjusting the overall length of the limiting crossbar 1; the positioning bolt 106 is rotated into the positioning hole 105 at the outer end of the extension rod 103, further penetrating the outer end of the extension rod 103 into the wall, positioning the limiting crossbar 1; through the sliding adjustment and bolt fixing of the extension rod 103 and the limiting crossbar 1, the length of the limiting crossbar 1 can be flexibly changed, which can adapt to the side openings of elevator shafts of different widths. To improve the versatility of the protective platform, after the drive cylinder 6 is started, it pushes the third telescopic rod 7 through the telescopic end. Since the third telescopic rod 7 is fixedly connected to the wall plate 304 of the slide rod 303, when the third telescopic rod 7 is pushed by the telescopic end of the drive cylinder 6, it drives the slide rod 303 to move forward, so that the slide rod 303 moves out of the sliding groove 302 and drives the wall plate 304 to abut against the wall of the elevator shaft, stabilizing the first beam frame 3 and the second beam frame 8, which facilitates the subsequent laying of foot pedals. When the angle frame 2 adjusts the distance between them according to the internal dimensions of the elevator shaft, it stretches the second beam frame 8, which drives the retracted rods of the first telescopic rod 4, the second telescopic rod 5 and the third telescopic rod 7 to stretch, extending the length between the first beam frame 3 and the second beam frame 8, which facilitates the balanced force on the foot pedals. This setting is conducive to the quick installation by a single installer, saving time and effort, ensuring the personal safety of the installer, and the setting of multiple telescopic rods makes the platform support more stable and increases the load-bearing capacity of the platform.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A safety protection platform for elevator shaft installation, comprising a limiting crossbar (1), characterized in that, The limiting crossbar (1) has side sliding grooves (101) extending through both ends. Several limiting blocks (102) are fixedly connected to the inner wall of the side sliding groove (101) near the opening. The limiting crossbar (1) includes an extension rod (103), a positioning bolt (106), and a receiving column (107). Square grooves (104) are provided on both the top and bottom sides of the extension rod (103). The extension rod (103) is slidably connected through the side sliding groove (101), and the several limiting blocks (102) are slidably connected within the several square grooves (104). The extension rod (103) and the limiting crossbar (1) are provided with several positioning holes (105) at equal intervals. The extension rod (103) and the limiting crossbar (1) are fixedly connected by bolts through the positioning holes (105). The column of the positioning bolt (106) is threadedly connected to the positioning hole (105) at the outer end of the extension rod (103). Several supporting columns (107) are integrally fixedly connected to one side of the limiting crossbar (1). Several corner brackets (2) are provided on the side of the limiting crossbar (1) near the supporting columns (107).

2. The safety protection platform for elevator shaft installation according to claim 1, characterized in that, A number of screws at one end of the corner brackets (2) pass through the positioning holes (105) on the limiting crossbar (1) and are fixedly connected by nuts. A shaft column (201) is fixedly connected to both sides of the corner brackets (2). A clamping plate (203) is provided on the bottom side of the corner brackets (2). A number of springs (202) are fixedly connected to one side of the clamping plate (203). The other end of the spring (202) is fixedly connected to one side of the corner brackets (2). A rotating bolt (204) is provided on the side of the corner brackets (2) away from the springs (202).

3. A safety protection platform for elevator shaft installation according to claim 2, characterized in that, The screw of the rotating bolt (204) is threaded through and connected to the vertical plate of the corner bracket (2). One end of the screw of the rotating bolt (204) abuts against the clamping plate (203). The rotating bolt (204) is located between several springs (202). A first beam frame (3) and a second beam frame (8) are provided on one side of the limiting crossbar (1). Several corner brackets (2) are inserted into the grooves at one end of the first beam frame (3) and the second beam frame (8). A slot (301) is provided at the bottom of one end of the first beam frame (3) and the second beam frame (8).

4. A safety protection platform for elevator shaft installation according to claim 3, characterized in that, The slot (301) is rotated and fitted on the shaft column (201). The structure of the second beam frame (8) is the same as that of the first beam frame (3). The first beam frame (3) has a sliding groove (302) through one end away from the limiting crossbar (1). The first beam frame (3) includes a sliding rod (303) and a wall abutment plate (304). The wall abutment plate (304) is fixedly connected to the tail end of the sliding rod (303) and fits against the tail end of the first beam frame (3). The sliding rod (303) is slidably connected in the sliding groove (302).

5. A safety protection platform for elevator shaft installation according to claim 4, characterized in that, A first telescopic rod (4), several second telescopic rods (5) and a third telescopic rod (7) are provided between the first beam frame (3) and the second beam frame (8). The two ends of the first telescopic rod (4) are fixedly connected to the inner sides of the first beam frame (3) and the second beam frame (8), and a placement frame (401) is fixedly connected to one side of the first telescopic rod (4). The bottom groove of the placement frame (401) fits against the support column (107). The two ends of the third telescopic rod (7) are fixedly connected between the wall plates (304) of the first beam frame (3) and the second beam frame (8).

6. A safety protection platform for elevator shaft installation according to claim 5, characterized in that, Several second telescopic rods (5) are fixedly connected at both ends to the inner sides of the first beam frame (3) and the second beam frame (8). The second telescopic rods (5) are located between the first telescopic rod (4) and the third telescopic rod (7). Several driving cylinders (6) are provided between the first beam frame (3) and the second beam frame (8). One end of the driving cylinder (6) is fixedly connected to the outside of the second telescopic rod (5), and the telescopic end of the driving cylinder (6) is fixedly connected to one side of the third telescopic rod (7).

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