Elevator door anti-collision device

Abstract

The utility model provides an anti-collision device for an elevator door, which relates to the technical field of elevator accessories and comprises a base, an anti-collision unit, a lifting unit and a protection unit, the lifting unit is arranged in the base and positioned below the anti-collision unit, the lifting unit can be used for driving the anti-collision unit to ascend and descend in the base, and the protection unit is used for protecting the anti-collision unit. According to the anti-collision device for the elevator door, when the elevator landing door is closed, a fork arm of a forklift can be prevented from directly colliding with the elevator landing door through the lifted inner barrel and outer barrel, the safety performance of the elevator is improved, and through the arranged base plate, the safety of the elevator is improved. And the inner cylinder and the outer cylinder can be protected at the same time, so that the service life of the inner cylinder and the outer cylinder is prolonged, and the use effect is good.

Description

Technical Field

[0001] This utility model relates to the field of elevator accessories technology, specifically an elevator door anti-collision device. Background Technology

[0002] In factories, forklifts are often used to transfer goods via elevators. For forklifts that are manually controlled and not powered, if the forklift moves at a high speed, the operator may not be able to stop it in time. The forklift's forks may hit the elevator landing door, and when the lower end of the elevator landing door is hit, it may come out of the guide rail below the door, posing a significant safety hazard. Utility Model Content

[0003] The purpose of this utility model is to provide an elevator door anti-collision device, which aims to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: the elevator door anti-collision device includes:

[0005] A base, with an opening at its upper end;

[0006] An anti-collision unit is disposed inside the base and can extend from the upper opening of the base;

[0007] A lifting unit is installed inside the base and located below the anti-collision unit. The lifting unit can be used to raise and lower the anti-collision unit within the base.

[0008] A protective unit is disposed on the upper surface of the base, and the protective unit can be used to provide protection for the anti-collision unit.

[0009] Preferably, an annular limiting protrusion is provided on the inner side of the opening at the upper end of the base, and several grooves are uniformly provided on the upper surface of the base and on the side of the opening.

[0010] Preferably, the anti-collision unit includes an outer cylinder with openings at both the top and bottom. An inner cylinder is provided inside the outer cylinder with an opening at the bottom. Folded edges are provided at both the top and bottom of the outer cylinder and at the bottom of the inner cylinder. The folded edges at the bottom of the outer cylinder and the bottom of the inner cylinder face the same direction and both face outwards from the base. The folded edges at the top of the outer cylinder face opposite directions to the folded edges at the bottom of the outer cylinder.

[0011] Preferably, the lifting unit includes two fixed plates disposed within the base, a ball screw with positive and negative teeth disposed between the two fixed plates, a motor for driving the ball screw to rotate disposed on one side of each fixed plate, guide rods disposed between the two fixed plates and on both sides of the ball screw, and two slide blocks, the slide blocks being threadedly connected to the ball screw and slidably connected to the guide rods, connecting rods being rotatably connected to both sides of each of the two slide blocks, a fixed block disposed at the inner top of the inner cylinder, and the end of the connecting rod furthest from the slide block being rotatably connected to the fixed block.

[0012] Preferably, the protective unit includes a rubber pad, one end of which is fixed to the base, and an elastic band, one end of which is fixed to the bottom of the groove, and the other end of which is fixed to the lower surface of the pad.

[0013] The beneficial effects of this utility model are:

[0014] This type of elevator door anti-collision device can prevent the forklift forks from directly hitting the elevator door when the elevator landing door is closed by raising the inner and outer cylinders, thus improving the safety performance of the elevator. In addition, the pads can also protect the inner and outer cylinders at the same time, thereby increasing their service life. It has a good effect. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the internal structure of the base.

[0017] Figure 3 This is a side view with the anti-collision unit not raised.

[0018] Figure 4 This is a side view of the anti-collision unit after it has been raised.

[0019] Figure 5 This is a 3D view of the anti-collision unit after it has been raised.

[0020] Figure 6 This is a schematic diagram of the protective unit after it has been raised.

[0021] Figure 7 This is a schematic diagram showing the installation location of the anti-collision device.

[0022] In the diagram: 1. Base; 2. Limiting protrusion; 3. Pull rope; 4. Groove; 5. Outer cylinder; 6. Inner cylinder; 7. Folded edge; 8. Fixing plate; 9. Ball screw; 10. Motor; 11. Guide rod; 12. Slide; 13. Connecting rod; 14. Fixing block; 15. Pad; 16. Elastic band; 17. Elevator landing door; 18. Reinforcing plate. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0024] like Figure 1-7 As shown, an elevator door anti-collision device includes:

[0025] Base 1, with an opening at the top;

[0026] The anti-collision unit is located inside the base 1 and can extend from the upper opening of the base 1.

[0027] The lifting unit is installed inside the base 1 and is located below the anti-collision unit. The lifting unit can be used to raise and lower the anti-collision unit within the base 1.

[0028] The protective unit is located on the upper surface of the base 1 and can be used to provide protection for the anti-collision unit.

[0029] Furthermore, an annular limiting protrusion 2 is provided on the inner side of the opening at the upper end of the base 1, and several grooves 4 are evenly provided on the upper surface of the base 1 and on the side of the opening.

[0030] The base 1 is welded from a steel plate and a frame. The steel plate is 2mm thick. When installing the anti-collision device, an installation groove needs to be dug in front of the elevator landing door 17. The anti-collision device is installed in the installation groove and the base 1 can be fixed to the ground by bolt connection.

[0031] Furthermore, the anti-collision unit includes an outer cylinder 5, which has openings at both the top and bottom. An inner cylinder 6 is provided inside the outer cylinder 5, which has an opening at the bottom. Folded edges 7 are provided at both the top and bottom of the outer cylinder 5 and at the bottom of the inner cylinder 6. The folded edges 7 at the bottom of the outer cylinder 5 and the folded edges 7 at the bottom of the inner cylinder 6 have the same orientation and both face outwards from the base 1. The folded edges 7 at the top of the outer cylinder 5 and the folded edges 7 at the bottom of the outer cylinder 5 have opposite orientations.

[0032] The outer cylinder 5, inner cylinder 6, and the flanges 7 on the outer cylinder 5 and inner cylinder 6 are all made of steel plate with a thickness of 2mm. The width of the flange 7 is equal to the width of the limiting protrusion 2, which is 3mm. The flange 7 at the lower end of the outer cylinder 5 can abut against the limiting protrusion 2, and the flange 7 at the lower end of the inner cylinder 6 can abut against the flange 7 at the upper end of the outer cylinder 5. Thus, when the inner cylinder 6 is moved upward by controlling the lifting unit, the inner cylinder 6 can abut against the flange 7 at the upper end of the outer cylinder 5 through the flange 7 at the lower end, thereby driving the outer cylinder 5 to move upward. When the flange 7 at the lower end of the outer cylinder 5 abuts against the limiting protrusion 2, it can prevent the outer cylinder 5 from completely coming out of the base 1, thereby ensuring that the outer cylinder 5 can be retracted into the base 1.

[0033] Several through holes can be opened at a fixed distance on the folded edge 7 at the lower end of the inner cylinder 6. Then, through the elastic pull rope 3, one end of the pull rope 3 is fixedly connected to the upper folded edge 7 of the outer cylinder 5. The other end of the pull rope 3 passes through the through hole and is fixedly connected to the inner bottom of the base 1. The pull rope 3 is always in a stretched state. When the inner cylinder 6 moves downward, the outer cylinder 5 can follow the inner cylinder 6 downward under the action of the pull rope 3, thus preventing the outer cylinder 5 from not following the inner cylinder 6 downward.

[0034] Meanwhile, reinforcing plates 18 are provided at intervals inside the inner cylinder 6 and on both sides of the lifting unit to improve the inner cylinder 6's resistance to deformation.

[0035] Furthermore, the lifting unit includes two fixed plates 8 disposed within the base 1, a ball screw 9 with positive and negative teeth disposed between the two fixed plates 8, a motor 10 for driving the ball screw 9 to rotate disposed on one side of the fixed plate 8, guide rods 11 disposed between the two fixed plates 8 and on both sides of the ball screw 9, and also includes two slides 12, the slides 12 being threadedly connected to the ball screw 9 and slidably connected to the guide rods 11, connecting rods 13 being rotatably connected to both sides of the two slides 12, a fixing block 14 disposed at the inner top of the inner cylinder 6, and the end of the connecting rod 13 away from the slide 12 being rotatably connected to the fixing block 14.

[0036] When controlling the inner cylinder 6 and outer cylinder 5 to move upward, the motor 10 is started first. The motor 10 drives the ball screw 9 to rotate. The two slides 12 are threadedly connected to the ball screw 9. At the same time, the slides 12 are slidably connected to the guide rod 11, so that the two slides 12 can move closer or further apart. The two slides 12 move at the same speed. When the two slides 12 move closer together, they can push the inner cylinder 6 upward through the connecting rod 13 and the fixing block 14. When the inner cylinder 6 moves upward, it can drive the outer cylinder 5 upward through the folded edge 7 at the bottom of the inner cylinder 6. When the folded edge 7 at the bottom of the outer cylinder 5 abuts against the limiting protrusion 2, the motor 10 stops. At this time, the outer cylinder 5 and the inner cylinder 6 extend upward from the inside of the base 1. The inner cylinder 6 and the outer cylinder 5 can block the forklift fork arm to prevent the forklift fork arm from directly hitting the elevator landing door 17.

[0037] When the forklift needs to enter the motor 10, the output end of the motor 10 is controlled to rotate in the opposite direction, and the two slides 12 move away from each other. At this time, both the inner cylinder 6 and the outer cylinder 5 move downward, and neither the inner cylinder 6 nor the outer cylinder 5 will affect the forklift's entry into the elevator.

[0038] The starting and reversing of motor 10 are related to the elevator control system. When the elevator landing door 17 opens, motor 10 starts simultaneously, controlling the inner cylinder 6 and outer cylinder 5 to retract into the base 1. The retraction speed of the inner cylinder 6 and outer cylinder 5 is slightly faster than the opening speed of the elevator landing door 17. When the elevator landing door 17 closes, the output end of motor 10 rotates in the reverse direction, controlling the inner cylinder 6 and outer cylinder 5 to rise out from the base 1. Similarly, the rising speed of the inner cylinder 6 and outer cylinder 5 is also slightly faster than the closing speed of the elevator landing door 17. When the elevator landing door 17 is fully open or fully closed, motor 10 is also in a stopped state.

[0039] Meanwhile, since the inner cylinder 6 and the outer cylinder 5 move from bottom to top, accidents such as people being pinched are almost impossible, resulting in high safety.

[0040] Furthermore, the protective unit includes a rubber pad 15, one end of which is fixed to the base 1, and an elastic band 16, one end of which is fixed to the bottom of the groove 4, and the other end of which is fixed to the lower surface of the pad 15.

[0041] The surface of the pad 15 has a pattern. When the inner cylinder 6 and the outer cylinder 5 are raised, the pad 15 will also rise, and its surface will bend. At the same time, the elastic band 16 will be further stretched. The state of the pad 15 after it is fully bent is as shown in the instruction manual. Figure 4 and appendix Figure 6 As shown, the pad 15 can prevent the forklift fork arm from directly impacting the inner cylinder 6 or the outer cylinder 5, thereby improving the service life of the inner cylinder 6 and the outer cylinder 5. When the inner cylinder 6 and the outer cylinder 5 are completely retracted into the base 1, the pad 15 can be laid back on the upper surface of the base 1 under the action of the elastic band 16, which can prevent the forklift and other vehicles from directly pressing on the base 1 and the inner cylinder 6, thus protecting the base 1 and the inner cylinder 6. The pad 15 is 10mm thick, and one end of the pad 15 can be fixed to the base 1 with bolts.

[0042] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

Claims

1. An elevator door anti-collision device, characterized in that, include: A base, with an opening at its upper end; An anti-collision unit is disposed inside the base and can extend from the upper opening of the base; A lifting unit is installed inside the base and located below the anti-collision unit. The lifting unit can be used to raise and lower the anti-collision unit within the base. A protective unit is disposed on the upper surface of the base, and the protective unit can be used to provide protection for the anti-collision unit.

2. The elevator door anti-collision device according to claim 1, characterized in that, An annular limiting protrusion is provided on the inner side of the opening at the upper end of the base, and several grooves are evenly provided on the upper surface of the base and on the side of the opening.

3. The elevator door anti-collision device according to claim 2, characterized in that, The anti-collision unit includes an outer cylinder with openings at both the top and bottom. An inner cylinder is provided inside the outer cylinder with an opening at the bottom. Folded edges are provided at both the top and bottom of the outer cylinder and at the bottom of the inner cylinder. The folded edges at the bottom of the outer cylinder and the bottom of the inner cylinder face the same direction and both face outwards from the base. The folded edges at the top of the outer cylinder face opposite directions to the folded edges at the bottom of the outer cylinder.

4. The elevator door anti-collision device according to claim 3, characterized in that, The lifting unit includes two fixed plates disposed within the base, with a ball screw having positive and negative teeth disposed between the two fixed plates. A motor for driving the ball screw to rotate is disposed on one side of each fixed plate. Guide rods are disposed between the two fixed plates and on both sides of the ball screw. The unit also includes two slides, which are threadedly connected to the ball screw and slidably connected to the guide rods. Connecting rods are rotatably connected to both sides of each slide. A fixed block is disposed at the top of the inner cylinder. The end of the connecting rod furthest from the slide is rotatably connected to the fixed block.

5. The elevator door anti-collision device according to claim 4, characterized in that, The protective unit includes a rubber pad, one end of which is fixed to the base, and an elastic band, one end of which is fixed to the bottom of the groove, and the other end of which is fixed to the lower surface of the pad.

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