Elevator pit protection device

Abstract

This invention relates to the field of elevator maintenance technology. The invention discloses an elevator pit protection device, comprising a pit body and a ladder body located on one side of the pit body. Multiple ladder steps are welded onto the ladder body. Each ladder step is equipped with an anti-slip baffle and a protective pad. A rotating mechanism is provided on each anti-slip baffle and protective pad. Normally, the ladder steps, anti-slip baffle, and protective pad are folded together in a straight line, preventing oil from dripping down the elevator shaft and onto the ladder steps during elevator maintenance, thus preventing slippage. When entering the elevator pit for maintenance, the ladder steps, anti-slip baffle, and protective pad can be transformed into a Z-shape. The raised features on the anti-slip baffle and ladder steps prevent operators from slipping, while the protective pad prevents the operator's knees from directly colliding with the ladder steps.

Description

Technical Field

[0001] This invention relates to the field of elevator maintenance technology, and in particular to an elevator pit protection device. Background Technology

[0002] As a special type of equipment for transporting people and goods, elevators require regular maintenance to ensure their safety. The elevator pit is a safe space within the elevator shaft for workers and other personnel to carry out construction work, as well as a safe space for inspection and testing personnel to enter the pit for inspection and testing. Elevator workers and other related personnel usually enter the pit by climbing a pit ladder. The safety of the pit ladder directly affects the safety of elevator workers and inspection and testing personnel.

[0003] When an elevator is running, friction and wear occur between the internal mechanical parts. Oil is usually applied to the surface of the parts to reduce friction and wear. In the existing technology, when oil is applied to the surface of the parts located at the bottom of the elevator, the oil drips down the shaft and onto the ladder steps in the elevator pit. When elevator operators and other personnel enter the pit via the ladder, they are prone to slipping and falling. Since there is a lot of equipment inside the elevator pit, if a worker slips, it will cause personal injury.

[0004] Therefore, it is necessary to provide an elevator pit protection device to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide an elevator pit protection device to solve the problems mentioned in the background art, such as the fact that when oil is applied to the surface of the components at the bottom of the elevator, the oil drips down the shaft and onto the ladder steps in the elevator pit, making it easy for elevator operators and other personnel to slip and fall when entering the pit via the ladder. In addition, since there is a lot of equipment inside the elevator pit, if an operator slips, it will cause personal injury to the operator.

[0006] Based on the above ideas, the present invention provides the following technical solution: an elevator pit protection device, including a pit body and a ladder body located on one side of the pit body. The ladder body is welded with multiple ladder steps. Each ladder step is provided with an anti-slip baffle and a protective pad. A rotating mechanism is provided on each anti-slip baffle and the protective pad. The rotating mechanism drives the multiple anti-slip baffles and the protective pads to rotate simultaneously. The rotation directions of the anti-slip baffles and the protective pads are opposite, and the rotation angle of the protective pads is greater than the rotation angle of the anti-slip baffles.

[0007] The rotating mechanism includes two sets of transmission components, two sets of reciprocating components, and two sets of rotating components. The two sets of rotating components are respectively disposed on both sides of the reciprocating components and are respectively disposed within the anti-slip baffle and the protective pad. The transmission components are located above the reciprocating components and drive the reciprocating components to move back and forth. The reciprocating components move back and forth, thereby driving the two sets of rotating components to rotate, which in turn drives the anti-slip baffle and the protective pad to rotate.

[0008] As a further embodiment of the present invention: the transmission assembly includes two transmission motors, the transmission motors are fixedly connected to one side of the ladder body, the output end of the transmission motors is fixedly connected to a round rod, the round rod passes through the ladder body and is rotatably connected to the ladder body, and a second sprocket is fixedly connected to one end of the round rod on the outside of the round rod;

[0009] The second sprocket is engaged with a chain on its outer side, and the chain is engaged with a number of first sprockets corresponding to the number of ladder steps on its inner side.

[0010] As a further aspect of the present invention: the reciprocating assembly includes a number of reciprocating screws corresponding to the number of first sprockets, the reciprocating screws passing through the ladder body and rotatably connected thereto, and two movable sliders connected to the outside of the reciprocating screws via a nut pair, the two movable sliders moving in opposite directions;

[0011] The movable slider is fixedly connected to a telescopic rod on the side near the ladder body, and the telescopic rod is fixedly connected to one side of the ladder body.

[0012] As a further aspect of the present invention: the rotating assembly includes a transmission rack, and a transmission gear is meshed with the top of the transmission rack;

[0013] The anti-slip baffle and the protective pad are both fixedly connected to a rotating rod. Two movable sliders pass through both ends of the rotating rod and are rotatably connected to them. Both ends of the rotating rod are fixedly connected to a transmission gear.

[0014] The transmission rack is fixedly connected to the side of the ladder body near the protective pad.

[0015] As a further aspect of the present invention: two strip grooves are provided on one side of the ladder body, and the chain is disposed in the strip grooves.

[0016] As a further aspect of the present invention: a building wall is fixedly connected to the top of the pit body, and a pull rope is installed on the side of the building wall near the ladder body.

[0017] As a further aspect of the present invention, the protective pad is made of a soft material.

[0018] As a further aspect of the present invention: the number of teeth on the transmission rack near the protective pad is greater than the number of teeth on the transmission rack near the anti-slip baffle.

[0019] As a further aspect of the present invention, the ladder body is fixed to the bottom side of the pit body near the bottom end by bolts.

[0020] Compared with the prior art, the beneficial effects of the present invention are that, under normal conditions, the ladder steps, anti-slip baffles, and protective pads are folded together in a straight line, which can prevent oil from dripping down the elevator shaft onto the surface of the ladder steps during elevator equipment maintenance, thus preventing the ladder steps from slipping. When entering the elevator pit for maintenance work, the ladder steps, anti-slip baffles, and protective pads can be transformed into a Z-shape. The protrusions on the anti-slip baffles and ladder steps can prevent the operator's feet from slipping, and the protective pads can prevent the operator's knees from directly colliding with the ladder steps.

[0021] Compared with the prior art, the beneficial effect of the present invention is that the rotating mechanism can lock the Z-shaped shape of the ladder steps, anti-slip baffles and protective pads, preventing the ladder from being unstable when the operator walks in the Z-shaped shape. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the ladder step structure of the present invention;

[0025] Figure 3 This is the present invention. Figure 2 Enlarged view of the A-section structure;

[0026] Figure 4 This is a schematic diagram of the protective pad structure of the present invention;

[0027] Figure 5 This is the present invention. Figure 4 Enlarged view of the structure of section B;

[0028] Figure 6 This is a schematic diagram of the anti-slip baffle structure of the present invention;

[0029] Figure 7 This is the present invention. Figure 6 Enlarged view of the C-section structure;

[0030] Figure 8 This is the present invention. Figure 6 Enlarged view of the structure of part D;

[0031] Figure 9This is a schematic diagram of the reciprocating lead screw structure of the present invention;

[0032] Figure 10 This is a schematic diagram of the transmission gear structure of the present invention.

[0033] In the diagram: 1. Ladder body; 2. Ladder steps; 3. Anti-slip baffle; 4. Protective pad; 5. Rotating rod; 6. Transmission gear; 7. Transmission rack; 8. Reciprocating screw; 9. Moving slider; 10. First sprocket; 11. Chain; 12. Transmission motor; 13. Round rod; 14. Second sprocket; 15. Telescopic rod; 16. Building wall; 17. Pit body; 18. Pull rope; 19. Strip groove. Detailed Implementation

[0034] like Figures 1 to 2 As shown, an elevator pit protection device includes a pit body 17 and a ladder body 1 located on one side inside the pit body 17. Multiple ladder steps 2 are welded on the ladder body 1. Anti-slip baffles 3 and protective pads 4 are provided on each ladder step 2. A rotating mechanism is provided on each anti-slip baffle 3 and protective pad 4. The rotating mechanism drives the multiple anti-slip baffles 3 and protective pads 4 to rotate simultaneously.

[0035] The rotating mechanism includes two sets of transmission components, two sets of reciprocating components, and two sets of rotating components. The two sets of rotating components are respectively located on both sides of the reciprocating components and are respectively located inside the anti-slip baffle 3 and the protective pad 4. The transmission components are located above the reciprocating components.

[0036] In specific operation, when entering the elevator pit for maintenance work, the transmission component drives the reciprocating component to move back and forth. This reciprocating movement of the reciprocating component, in turn, drives the two sets of rotating components to rotate, which in turn drives the anti-slip baffle 3 and the protective pad 4 to rotate. The anti-slip baffle 3 and the protective pad 4 rotate in opposite directions, and the rotation angle of the protective pad 4 is greater than that of the anti-slip baffle 3. Figure 9 and Figure 10 As shown, under normal conditions, the ladder step 2, anti-slip baffle 3, and protective pad 4 form a straight line, which prevents oil from dripping down the elevator shaft onto the surface of the ladder step 2 during elevator equipment maintenance, thus preventing the ladder step 2 from slipping. When entering the elevator pit for maintenance work, the shape of the ladder step 2, anti-slip baffle 3, and protective pad 4 can be changed to a Z-shape. At the same time, the Z-shape of the ladder step 2, anti-slip baffle 3, and protective pad 4 can be locked by a rotating mechanism to prevent the ladder from being unstable when the operator walks. The protrusions on the anti-slip baffle 3 and ladder step 2 can prevent the operator's feet from slipping, and the protective pad 4 can prevent the operator's knees from directly colliding with the ladder step 2.

[0037] like Figures 2 to 10As shown, the transmission assembly includes two transmission motors 12, which are fixedly connected to one side of the ladder body 1. A round rod 13 is fixedly connected to the output end of the transmission motor 12. The round rod 13 passes through the ladder body 1 and is rotatably connected to the ladder body 1. A second sprocket 14 is fixedly connected to one end of the round rod 13. A chain 11 is meshed with the outer side of the second sprocket 14. A number of first sprockets 10 corresponding to the number of ladder steps 2 are meshed with the inner side of the chain 11.

[0038] The reciprocating assembly includes a number of reciprocating screws 8 corresponding to the number of first sprockets 10. The reciprocating screws 8 pass through the ladder body 1 and are rotatably connected to it. Two movable sliders 9 are connected to the outside of the reciprocating screws 8 through a nut pair. The two movable sliders 9 move in opposite directions. A telescopic rod 15 is fixedly connected to the side of the movable slider 9 near the ladder body 1. The telescopic rod 15 is fixedly connected to the side of the ladder body 1.

[0039] The rotating assembly includes a transmission rack 7, with a transmission gear 6 meshing at the top of the transmission rack 7; a rotating rod 5 is fixedly connected inside both the anti-slip baffle 3 and the protective pad 4, with two movable sliders 9 passing through both ends of the rotating rod 5 and rotatably connected to them, and both ends of the rotating rod 5 are fixedly connected to the transmission gear 6; the transmission rack 7 is fixedly connected to the side of the ladder body 1 near the protective pad 4.

[0040] In specific operation, during maintenance, the maintenance personnel can drive the round rod 13 to rotate via the transmission motor 12. The rotation of the round rod 13 drives the second sprocket 14 to rotate. Through the cooperation of the chain 11 and the first sprocket 10, the reciprocating screw 8 is driven to rotate. The rotation of the reciprocating screw 8 causes the two movable sliders 9 located on the outside of the reciprocating screw 8 to move in a direction away from each other. Since the reciprocating screw 8 has two threaded grooves on the outside, the pitch of the screw on the side closer to the protective pad 4 is greater than the pitch of the screw on the side closer to the anti-slip baffle 3. Therefore, the moving distance of the movable slider 9 on the side closer to the protective pad 4 is greater than the moving distance of the movable slider 9 on the side closer to the anti-slip baffle 3. The movement of the movable sliders 9 drives the two rotating rods 5 to move simultaneously. At the same time, the movement of the two rotating rods 5 drives the anti-slip baffle 3 and the protective pad 4 located on the outside of the two rotating rods 5 to move together, and the movement directions of the anti-slip baffle 3 and the protective pad 4 are opposite.

[0041] Meanwhile, two transmission gears 6 are symmetrically installed on the outer side of each rotating rod 5. The movement of the two rotating rods 5 in opposite directions can also drive the two transmission gears 6 located on the outer side of each rotating rod 5 to move simultaneously. When the transmission gear 6 moves above the transmission rack 7, it rotates under the meshing force of the transmission rack 7. The rotation of the transmission gear 6 drives the two rotating rods 5 moving in opposite directions to rotate in opposite directions, thereby causing the anti-slip baffle 3 and protective pad 4 located on the outer side of the rotating rod 5 to rotate in opposite directions. Since the number of teeth on the transmission rack 7 near the protective pad 4 is greater than the number of teeth on the transmission rack 7 near the anti-slip baffle 3, the anti-slip baffle 3 rotates 90 degrees clockwise, while the protective pad 4 rotates 270 degrees counterclockwise. At the same time, the angles of the anti-slip baffle 3 and the protective pad 4 are locked, and the anti-slip baffle... Both the anti-slip baffle 3 and the protective pad 4 are perpendicular to the ladder step 2. This allows the anti-slip baffle 3 to hold the toes of the maintenance personnel when they step on the surface of the ladder step 2, preventing them from falling in that direction. The protective pad 4, which is perpendicular to the ladder step 2, prevents the knees of the maintenance personnel from directly contacting the hard ladder step 2 when they bend their knees while climbing up or down the ladder. At this time, the upper surface of the ladder step 2 is completely exposed, and there are protrusions on the upper surface of the ladder step 2. This prevents the maintenance personnel from slipping when they step on the upper surface of the ladder step 2. The anti-slip baffle 3 located above the ladder step 2 can also block the toes of the maintenance personnel, preventing them from slipping and falling during maintenance. Since the protective pad 4 is made of soft material, it can also prevent the knees of the maintenance personnel from directly colliding with the ladder step 2 when climbing up or down the ladder body 1.

[0042] After maintenance is completed, the maintenance personnel can exit the elevator pit and drive the second sprocket 14 to rotate via the drive motor 12. Following the same principle, the rotation of the second sprocket 14 drives the reciprocating screw 8 to rotate. The rotation of the reciprocating screw 8 then drives the two movable sliders 9 located outside the reciprocating screw 8 to move closer to each other. This causes the anti-slip baffle 3 and protective pad 4 to rotate in opposite directions, thus covering the upper surface of the ladder step 2 and resetting it. This protects the upper surface of the ladder step 2, preventing the oil used during elevator and elevator rail maintenance from dripping down the elevator shaft onto the upper surface of the ladder step 2, causing slippage. This could easily lead to a fall for maintenance personnel entering the elevator pit along the ladder body 1, creating a safety hazard.

[0043] like Figure 4 As shown, two strip grooves 19 are opened on one side of the ladder body 1, and the chain 11 is set in the strip groove 19. In specific operation, a space can be reserved for the chain 11 so that the chain 11 can drive multiple first sprockets 10 to rotate at the same time, thereby changing the steps of multiple ladders from a straight line to a Z-shape.

[0044] like Figure 1 As shown, a building wall 16 is fixedly connected to the top of the pit body 17. A pull rope 18 is installed on the side of the building wall 16 near the ladder body 1. The bottom side of the ladder body 1 is fixed to it with bolts. In specific operation, the bottom of the ladder body 1 is fixed with bolts to prevent the ladder body 1 from sliding when maintenance personnel climb on it. The pull rope 18 set on the side of the building wall 16 allows the workers to pull the rope 18 and move towards the ladder body 1.

Claims

1. An elevator pit protection device, characterized in that: The system includes a pit body (17) and a ladder body (1) located on one side inside the pit body (17). The system is characterized in that: multiple ladder steps (2) are welded on the ladder body (1), and each ladder step (2) is provided with an anti-slip baffle (3) and a protective pad (4). A rotating mechanism is provided on the anti-slip baffle (3) and the protective pad (4). The rotating mechanism drives the multiple anti-slip baffles (3) and the protective pad (4) to rotate simultaneously. The rotation directions of the anti-slip baffles (3) and the protective pad (4) are opposite, and the rotation angle of the protective pad (4) is greater than the rotation angle of the anti-slip baffles (3). The rotating mechanism includes two sets of transmission components, two sets of reciprocating components, and two sets of rotating components. The two sets of rotating components are respectively arranged on both sides of the reciprocating components and are respectively arranged in the anti-slip baffle (3) and the protective pad (4). The transmission components are located above the reciprocating components. The transmission components drive the reciprocating components to move back and forth. The reciprocating components move back and forth, thereby driving the two sets of rotating components to rotate, and then driving the anti-slip baffle (3) and the protective pad (4) to rotate. The transmission assembly includes two transmission motors (12), which are fixedly connected to one side of the ladder body (1). A round rod (13) is fixedly connected to the output end of the transmission motor (12). The round rod (13) passes through the ladder body (1) and is rotatably connected to the ladder body (1). A second sprocket (14) is fixedly connected to one end of the round rod (13). The second sprocket (14) is connected to a chain (11) on its outer side, and the chain (11) is connected to a first sprocket (10) in number corresponding to the number of ladder steps (2) on its inner side. The reciprocating assembly includes a number of reciprocating screws (8) corresponding to the number of the first sprockets (10). The reciprocating screws (8) pass through the ladder body (1) and are rotatably connected to it. Two movable sliders (9) are connected to the outside of the reciprocating screws (8) through a nut pair. The two movable sliders (9) move in opposite directions. The movable slider (9) is fixedly connected to a telescopic rod (15) on the side near the ladder body (1), and the telescopic rod (15) is fixedly connected to one side of the ladder body (1). The rotating assembly includes a transmission rack (7), and a transmission gear (6) is meshed with the top of the transmission rack (7). The anti-slip baffle (3) and the protective pad (4) are both fixedly connected with rotating rods (5). The two ends of the rotating rod (5) pass through two movable sliders (9) and are rotatably connected to them. The two ends of the rotating rod (5) are fixedly connected to the transmission gear (6). Both ends of the anti-slip baffle (3) and the protective pad (4) are provided with transmission racks (7), and the transmission racks (7) are fixedly connected to the ladder body (1); The number of teeth on the transmission rack (7) on the side closer to the protective pad (4) is greater than the number of teeth on the transmission rack (7) on the side closer to the anti-slip baffle (3).

2. The elevator pit protection device according to claim 1, characterized in that: Two strip grooves (19) are provided on one side of the ladder body (1), and the chain (11) is set in the strip grooves (19).

3. The elevator pit protection device according to claim 2, characterized in that: The top of the pit body (17) is fixedly connected to a building wall (16), and a pull rope (18) is installed on the side of the building wall (16) near the ladder body (1).

4. The elevator pit protection device according to claim 3, characterized in that: The protective pad (4) is made of soft material.

5. The elevator pit protection device according to claim 4, characterized in that: The ladder body (1) is fixed to the bottom side of the pit body (17) by bolts.

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