Safety pedal for floor stopping of construction hoist

Abstract

The utility model discloses a safety pedal for building hoist parking, which comprises a car, a sliding door and a barrier plate, a driving unit for driving the car to move up and down is arranged at the top of the car, the sliding door is arranged on the front side of the car, the barrier plate is arranged at the lower end of a bottom plate of the car, and two connecting rods are arranged on the barrier plate. Two sliding grooves are formed in the bottom of the lift car, each connecting rod is provided with a sliding block matched with the corresponding sliding groove, the two connecting rods are arranged in a front-back staggered mode, a transmission assembly for driving the barrier plate to stretch out and draw back through movement of the car door is arranged on the side wall of the lift car, and an intercepting assembly for preventing materials from falling onto the barrier plate is arranged on the barrier plate. Through cooperation of the barrier plate and the transmission assembly, the barrier plate is driven to stretch out and draw back by means of power given by the sliding door, small materials are prevented from falling out from gaps, safety accidents are prevented, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of elevators, in particular to a safety pedal for stopping floors of construction elevators. Background Art

[0002] Construction elevators are generally called construction hoists. Construction elevators are generally composed of several parts such as a car, drive mechanism, standard sections, attached walls, chassis, fences, and electrical drive systems. They are manned and cargo construction machinery frequently used in construction. They can use the car to quickly and safely transport construction materials, tools, and equipment from the ground to high places on the construction site, and transport waste materials from high places to the ground, greatly improving construction efficiency.

[0003] In order to ensure the stability of the construction elevator operation, during the actual operation of the construction elevator, there is a certain gap between the construction elevator and the building. The distance of this gap usually depends on the design of the building and the specific conditions of the construction site. Generally speaking, the distance of the gap can be between a few centimeters and tens of centimeters; when transporting materials, temporary wooden boards are usually used as pedals to cover the gap between the construction elevator and the building to facilitate smooth entry and exit. However, the process may cause some smaller materials to fall from the gap, posing a safety hazard.

[0004] For this reason, a safety pedal for stopping a floor of a construction elevator is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a safety pedal for stopping floors of construction elevators in view of the above-mentioned problems. The utility model cooperates with the blocking plate and the transmission assembly, and uses the power provided by the sliding door to drive the blocking plate to extend and retract, so as to prevent some smaller materials from falling out of the gap, prevent safety accidents, and improve safety. In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is as follows:

[0006] According to one aspect of the utility model, a safety pedal for stopping a floor of a construction elevator is provided, comprising a car, a sliding door, and a blocking plate, wherein a driving unit for driving the car to move up and down is provided on the top of the car, a sliding door is provided on the front side of the car, a blocking plate is provided at the lower end of the car floor, two connecting rods are provided on the blocking plate, two slide grooves are provided at the bottom of the car, each of the connecting rods is provided with a slider that cooperates with the slide groove, and the two connecting rods are staggered front and back, a transmission component for driving the blocking plate to extend and retract through the movement of the car door is provided on the side wall of the car, and an interception component is provided on the blocking plate to prevent materials from falling onto the blocking plate.

[0007] Preferably, the transmission assembly includes a rack 1 respectively installed on both sides of the blocking plate, each of the rack 1 is meshed with a gear 1, each of the gear 1 is installed on the outer side of the car through a rotating shaft, a gear 2 is installed on the upper end of each rotating shaft, each of the car doors is provided with a groove, each of the grooves is provided with a rack 2, and each gear 2 is meshed with a corresponding rack 2.

[0008] Preferably, each rack bar 2 is divided into a toothed area and a toothless area, and the number of teeth of each rack bar 2 is the same as the number of teeth of each rack bar 1.

[0009] Preferably, the blocking plate is composed of a front plate and a rear plate, the rear plate is provided with a concave cavity, a plurality of springs are arranged in the concave cavity, and one end of the plurality of springs is commonly connected to the front plate.

[0010] Preferably, the intercepting component is arranged on the front plate, and the intercepting component includes an airbag and an air pump. A support plate is provided at the upper end of the front plate, an airbag is provided on the support plate, an air pump is provided at the lower end of the rear plate, and the airbag cooperates with the air pump, and the air pump is electrically connected to the driving unit of the car.

[0011] Preferably, the cross-section of the top of the airbag is arc-shaped.

[0012] Preferably, each of the rotating shafts is provided with a slot on one end close to gear 2, and each of the inner rings of gear 2 is provided with a block that cooperates with the slot, and each block can slide in the corresponding slot, and each of the gears 2 cooperates with the corresponding groove, that is, part of the gear 2 extends into the groove and is restricted by the groove.

[0013] Preferably, each of the clamping blocks is provided with elastic members for reducing buffering at both upper and lower ends, and the elastic members include rubber blocks or elastic blocks.

[0014] Preferably, a buffer pad is provided at the front end of the blocking plate, and the buffer pad is an elastic pad with a trapezoidal cross-section.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0016] 1. The utility model discloses a safety pedal for stopping a floor of a construction elevator. Through the cooperation of a blocking plate and a transmission assembly, the blocking plate is extended and retracted with the help of the power provided by a sliding door, so that some smaller materials are prevented from falling out from the gap, thereby preventing safety accidents and improving safety.

[0017] 2. The utility model discloses a safety pedal for stopping a floor of a construction elevator. Through the cooperation of an air pump and an air bag, when the pedal reaches the level of a building, the air bag expands to fill the gap and partially exceeds the gap. When the air bag expands, a certain elastic force will be generated, and fallen materials will be ejected, thereby preventing the materials from falling onto the blocking plate and being difficult to remove, thereby improving convenience and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a frontal stereogram of the utility model;

[0019] Figure 2 It is a rear perspective view of the utility model;

[0020] Figure 3 This utility model Figure 2 A magnified image of point A;

[0021] Figure 4 It is a side perspective view of the utility model;

[0022] Figure 5 This utility model Figure 4 The enlarged view of point B;

[0023] Figure 6 This utility model Figure 5 A partial cross-sectional view of the front view;

[0024] Figure 7 It is an exploded view of the gear 2 and the rotating shaft of the utility model;

[0025] In the accompanying drawings, 1, car; 2, car door; 201, rack 2; 202, gear 2; 3, blocking plate; 301, rack 1; 302, gear 1; 303, groove; 304, front plate; 305, rear plate; 306, cavity; 307, spring; 308, support plate; 309, airbag; 310, air pump; 4, connecting rod; 5, slide groove; 6, slider; 7, rotating shaft; 701, slot; 702, block; 703, elastic member; 8, buffer pad. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling readers to have a thorough understanding of one or more aspects of the utility model, and these aspects of the utility model can be realized even without these specific details.

[0027] See also Figures 1 to 7 The utility model provides a safety pedal for stopping a floor of a construction elevator, and the technical solution is as follows:

[0028] The utility model comprises a car 1, a sliding door and a blocking plate 3. A driving unit for driving the car 1 to move up and down is arranged on the top of the car 1, a sliding door is arranged on the front side of the car 1, a blocking plate 3 is arranged on the lower end of the bottom plate of the car 1, two connecting rods 4 are arranged on the blocking plate 3, two slide grooves 5 are opened at the bottom of the car 1, each connecting rod 4 is provided with a slider 6 matched with the slide groove 5, and the two connecting rods 4 are staggeredly arranged front and back, a transmission component for driving the blocking plate 3 to extend and retract through the movement of the car door 2 is arranged on the side wall of the car 1, an intercepting component for preventing materials from falling onto the blocking plate 3 is arranged on the blocking plate 3, and a buffer pad 8 is provided at the front end of the blocking plate 3, and the buffer pad 8 is an elastic pad with a trapezoidal cross section.

[0029] Construction workers can use the elevator car 1 to transport building materials, tools and equipment from the ground to a high place at the construction site, and transport waste materials from a high place to the ground. During the process, there is generally a gap of several centimeters or even tens of centimeters between the construction elevator and the building after it stops. Currently, temporary wooden boards are used as pedals, which have poor stability. When construction workers carry materials, the instability of the pedals can easily cause some smaller materials to fall into the gap, which may lead to safety accidents and pose a safety hazard.

[0030] By providing a blocking plate 3 at the bottom of the car 1 and a transmission assembly on the side wall of the car 1 that drives the blocking plate 3 to extend and retract through the movement of the car door 2, when the car 1 stops at a floor and the sliding door is opened, the two connecting rods 4 slide in the corresponding slide grooves 5 through the sliders 6, and the blocking plate 3 is driven forward by the two connecting rods 4 until it contacts the surface of the building, so that the blocking plate 3 completely blocks the gap between the car 1 and the building, preventing some smaller materials from falling into the gap, preventing safety accidents, and improving safety; conversely, when the sliding door is closed, the blocking plate 3 is driven by the transmission assembly to extend and retract through the sliding grooves 5. The plate 3 retracts away from the building to prevent the blocking plate 3 from affecting the normal operation of the car 1; and if smaller objects fall onto the blocking plate 3, when the car 1 moves, the blocking plate 3 will easily retract the objects together and enter the bottom of the car 1, and the gap is small, making it difficult to grab them by hand. By providing an intercepting component on the blocking plate 3, the gap between the car 1 and the building is blocked when the blocking plate 3 is extended, and the depth of the intercepting component is slightly higher than the gap, so that the fallen objects cannot enter the gap and are intercepted and ejected by the intercepting component, thereby preventing the objects from falling onto the blocking plate 3 and being unable to be easily taken out.

[0031] Two connecting rods 4 are arranged to be staggered front and back in the extending direction of the blocking plate 3, and the center of gravity of the blocking plate 3 is as close to the center as possible. After a long period of contact with the building surface, the accumulation of impact force given by the building surface can easily cause the blocking plate 3 to deform, resulting in the center of gravity of the blocking plate 3 to shift, and then the blocking plate 3 will tilt. The above situation can be avoided by arranging the positions of the two connecting rods 4 to be staggered front and back.

[0032] The transmission assembly includes racks 301 respectively installed on both sides of the blocking plate 3, each rack 301 is meshed with a gear 302, each gear 302 is installed on the outer side of the car 1 through a rotating shaft 7, a gear 202 is installed on the upper end of each rotating shaft 7, a groove 303 is opened on each car door 2, each groove 303 is provided with a rack 201, and each gear 202 is meshed with the corresponding rack 201.

[0033] When the car 1 stops, the sliding door slowly opens to the left and right sides. During the process, each rack 201 on the car 1 drives the corresponding gear 202 to rotate, and each gear 202 drives the corresponding shaft 7 to rotate, and the corresponding gear 1 302 on the shaft 7 rotates coaxially with the gear 202, and each gear 1 302 is then transmitted to the meshing rack 1 301. The racks 1 301 on both sides of the blocking plate 3 are driven by the two gears 1 302 to extend toward the exit of the car 1 until the blocking plate 3 fits with the surface of the building. At this time, the gap between the construction elevator and the parking floor of the building is blocked to prevent smaller materials from falling through the gap to the outside and prevent safety accidents. When the sliding door is closed, the During the process, rack 201 drives gear 202 to rotate in the opposite direction, and then drives gear 1 302 to rotate in the opposite direction through shaft 7, and then gear 1 302 meshes with rack 1 301, and the two gears 1 302 drive the blocking plate 3 to retract back until the sliding door is closed. At this time, the blocking plate 3 is completely retracted into the bottom of the car 1 to avoid affecting the normal operation of the car 1; gear 1 302, gear 2 202, rack 1 301, and rack 2 201 are arranged to cooperate with the blocking plate 3, and the forward and backward movement of the blocking plate 3 is realized through the transmission between the gear and the rack without adding any external driving force. The force generated by the left and right lateral movement of the sliding door is used to drive the gear and rack to engage and transmit, so as to achieve the desired effect.

[0034] Each rack gear 201 is an incomplete rack gear, that is, each rack gear 201 is divided into a toothed area and a toothless area, and the number of teeth of each rack gear 201 is the same as the number of teeth of each rack gear 1 301 .

[0035] Gear 1 302 is connected to gear 2 202 through shaft 7, i.e., they are coaxially driven, and the transmission ratio between gear 1 302 and rack 1 301 is the same as the transmission ratio between gear 2 202 and rack 2 201, i.e., the distance moved by rack 2 201 is equal to the distance moved by rack 1 301, but each rack 2 201 is located on the sliding door, and the opening distance of the sliding door is too long compared to the gap. If the transmission distances of rack 1 301 and rack 2 201 are the same, it is easy for the blocking plate 3 to be pressed against the well wall while rack 2 201 and gear 2 202 are still meshed, which will hinder the opening of the sliding door and may cause a malfunction of the car 1. Each rack 2 201 is divided into a toothed area and a non-toothed area. When gear 2 202 is meshed with the toothed area of ​​rack 2 201, rack 2 201 can drive gear 2 2 02 rotates, when the toothless area of ​​rack 201 passes through gear 202, rack 201 does not mesh with gear 202 at this time, and gear 202 stops rotating. Because the number of teeth in the toothed area of ​​each rack 201 is the same as the number of teeth in each rack 1 301, the number of teeth in the toothed area of ​​rack 201 is set to a preset value. When the preset value is reached, the blocking plate 3 just touches the surface of the building, and the coaxial transmission of gear 1 302 and gear 202 drives rack 1 301 to move forward a distance matching the preset value, avoiding the above situation and ensuring the stability of the elevator operation; when the sliding door is slowly closed, the toothless area on rack 201 does not contact gear 202, and when it reaches the toothed area, it meshes with gear 202 again, and then the blocking block is retracted through the rotating shaft 7, gear 1 302, and rack 1 301.

[0036] The rack 201 is set as an incomplete rack, so that when the sliding door is not fully opened, the blocking plate 3 can already be against the surface of the building. When the sliding door is closed, the blocking plate 3 retracts after the sliding door is partially closed, thereby reducing the probability of objects falling into the gap and improving the stability of the car 1 during operation.

[0037] The blocking plate 3 is composed of a front plate 304 and a rear plate 305. The rear plate 305 is provided with a concave cavity 306. A plurality of springs 307 are arranged in the concave cavity 306, and one end of the plurality of springs 307 is connected to the front plate 304. Since the gap distance between the elevator and the building is not the same, if the length of the blocking plate 3 is a fixed value, the blocking plate 3 may be too short to completely fit the shaft wall, and materials may fall from the gap. Conversely, the blocking plate 3 may be too long, resulting in the blocking plate 3 being in close contact with the shaft wall while the gear 2 202 and the rack 2 201 are still in meshing state, thereby interfering with the opening of the sliding door, causing the gear 2 to be stuck. 306 is provided on the rear plate 305, and is connected to the front plate 304 through a plurality of springs 307. Then, the distance between the front plate 304 and the spring 307 will exceed the maximum value of the gap distance, and the blocking plate 3 will not be extended too short. When the front plate 304 is against the well wall, the force is unloaded by squeezing the spring 307, and the extra squeezing force acts on the spring 307, so that the gear 202 and the rack 201 will not interfere with each other, thereby preventing the gear 202 and the rack 201 from being damaged.

[0038] The interception component is arranged on the front plate 304, and the interception component includes an airbag 309 and an air pump 310. A support plate 308 is arranged on the upper end of the front plate 304, and an airbag 309 is arranged on the support plate 308. An air pump 310 is arranged at the lower end of the rear plate 305, and the airbag 309 cooperates with the air pump 310, and the air pump 310 is electrically connected to the driving unit of the car 1; there is a height difference between the top of the gap after the building is leveled and the blocking plate 3, and the material cannot be easily taken out if it falls on the blocking plate 3. When the blocking plate 3 is extended, the driving unit gives an electrical signal to the air pump 310, and the air pump 310 starts to blow air to the airbag 309 through the air pipe. The airbag 309 swells up under the action of the air pump 310. The airbag 309 is arranged with a large head and a small body, so that the airbag 309 can extend upward to block the gap. When the airbag 309 blocks the gap, the material cannot fall into the gap, thereby improving convenience.

[0039] The top cross-section of the airbag 309 is arc-shaped; and when the airbag 309 is filled with air, part of the airbag 309 will extend outside the gap. The part extending outside the gap is a protrusion, and the cross-section of the protrusion is arc-shaped. When material falls onto the airbag 309, the airbag 309 will generate a certain elastic force when it expands, and the material will be ejected.

[0040] Each rotating shaft 7 is provided with a slot 701 on one end close to the gear 202, and each gear 202 is provided with a block 702 that matches the slot 701 on the inner ring, and each block 702 can slide in the corresponding slot 701, and each gear 202 matches with the corresponding groove 303, that is, part of the gear 202 extends into the groove 303 and is restricted by the groove 303; the car 1 will vibrate up and down when the construction personnel enter and exit, and the rack 201 on the car door 2 may not be completely engaged with the gear 202, and may even be separated from the gear 202, thereby reducing the transmission efficiency or even failing to transmit. It is set that part of the gear 202 extends into the groove 303 The gear 202 is restricted by the groove 303, and the block 702 on the gear 202 cooperates with the groove 701 on the rotating shaft 7. When the car door 2 vibrates up and down, the gear 202 is restricted by the vertical direction of the groove 701, and the gear 202 moves up and down following the groove 303. During the process, the block 702 on the inner ring of the gear 202 slides in the corresponding groove 701, and then the entire gear 202 moves up and down following the car door 2, avoiding the situation that the gear 202 cannot mesh with the rack 201, reducing the situation where the gear 202 and the rack 201 are not fully meshed or disengaged, and improving the stability of the transmission between the gear 202 and the rack 201.

[0041] Each clamping block 702 is provided with elastic members 703 for reducing buffering at both upper and lower ends, and the elastic members 703 include rubber blocks or elastic blocks.

[0042] When the gear 202 moves up and down following the car 1, the block 702 is subjected to a rigid impact, which is prone to cracks or even damage. Elastic parts 703 for reducing buffering are provided at the upper and lower ends of each block 702. The elastic part 703 includes a rubber block or an elastic block. When the gear 202 moves up and down following the car 1, a certain impact force is offset by the buffering of the elastic part 703, thereby reducing the probability of damage to the block 702 and avoiding the probability of reduced transmission efficiency between the gear 202 and the rack 2 201.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A safety pedal for stopping a floor of a construction elevator, characterized in that: include: A car (1), a sliding door and a blocking plate (3), wherein a driving unit for driving the car (1) to move up and down is provided on the top of the car (1), a sliding door is provided on the front side of the car (1), a blocking plate (3) is provided at the lower end of the bottom plate of the car (1), two connecting rods (4) are provided on the blocking plate (3), two sliding grooves (5) are provided at the bottom of the car (1), each of the connecting rods (4) is provided with a slider (6) that cooperates with the sliding groove (5), and the two connecting rods (4) are arranged in a staggered manner front to back, a transmission component for driving the blocking plate (3) to extend and retract through the movement of the car door (2) is provided on the side wall of the car (1), and an interception component for preventing materials from falling onto the blocking plate (3) is provided on the blocking plate (3).

2. A safety pedal for stopping a floor of a construction elevator according to claim 1, characterized in that: The transmission assembly comprises racks 1 (301) respectively mounted on both sides of the blocking plate (3), each of the racks 1 (301) being meshed with a gear 1 (302), each of the gears 1 (302) being mounted on the outer side of the car (1) via a rotating shaft (7), a gear 2 (202) being mounted on the upper end of each rotating shaft (7), each of the car doors (2) being provided with a groove (303), each of the grooves (303) being provided with a rack 2 (201), and each gear 2 (202) being meshed with a corresponding rack 2 (201).

3. A safety pedal for stopping a floor of a construction elevator according to claim 2, characterized in that: Each rack gear 2 (201) is divided into a toothed area and a toothless area, and the number of teeth of each rack gear 2 (201) is the same as the number of teeth of each rack gear 1 (301).

4. A safety pedal for stopping a floor of a construction elevator according to claim 1, characterized in that: The blocking plate (3) is composed of a front plate (304) and a rear plate (305); a concave cavity (306) is provided on the rear plate (305); a plurality of springs (307) are provided in the concave cavity (306); and one end of the plurality of springs (307) is commonly connected to the front plate (304).

5. A safety pedal for stopping a floor of a construction elevator according to claim 4, characterized in that: The interception assembly is arranged on the front plate (304), and the interception assembly comprises an air bag (309) and an air pump (310); a support plate (308) is arranged on the upper end of the front plate (304), and the air bag (309) is arranged on the support plate (308); an air pump (310) is arranged on the lower end of the rear plate (305), and the air bag (309) cooperates with the air pump (310), and the air pump (310) is electrically connected to the driving unit of the car (1).

6. A safety pedal for stopping a floor of a construction elevator according to claim 5, characterized in that: The cross section of the top of the airbag (309) is in the shape of an arc.

7. A safety pedal for stopping a floor of a construction elevator according to claim 2, characterized in that: Each of the rotating shafts (7) is provided with a slot (701) on one end close to the second gear (202), and each of the inner rings of the second gear (202) is provided with a block (702) that matches the slot (701), and each block (702) can slide in the corresponding slot (701), and each of the second gears (202) matches with the corresponding groove (303), that is, a portion of the second gear (202) extends into the groove (303) and is restricted by the groove (303).

8. A safety pedal for stopping a floor of a construction elevator according to claim 7, characterized in that: Each of the clamping blocks (702) is provided with elastic members (703) for reducing buffering at both upper and lower ends, and the elastic members (703) include rubber blocks or elastic blocks.

9. A safety pedal for stopping a floor of a construction elevator according to claim 1, characterized in that: A buffer pad (8) is provided at the front end of the blocking plate (3), and the buffer pad (8) is an elastic pad with a trapezoidal cross section.

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