A platform elevator car bottom edge protection device

Abstract

The present invention discloses a platform elevator car bottom edge protection device, which relates to the technical field of elevator protection. It includes a safety touch plate, an elastic component, and a micro switch. The safety touch plate is arranged at the edge of the car bottom, the upper end of the elastic component is connected to the safety touch plate, the lower end of the elastic component is connected to the lower end of the car bottom, the micro switch is arranged below the safety touch plate, the micro switch is connected to the lower end of the car bottom, and the micro switch is electrically connected to the elevator main unit. The present invention can stop the elevator from running when a foreign object falls between the edge of the car bottom and the shaft wall, so as to protect the safety of passengers.

Description

Technical Field

[0001] The invention relates to the technical field of elevator protection, and in particular to a car bottom edge protection device for a platform type elevator. Background Art

[0002] In a platform elevator, since there is no wall around the elevator car bottom, there is a gap between the edge of the car bottom and the elevator shaft wall, so that foreign objects such as handbags and packaging boxes carried by passengers can easily fall between the edge of the car bottom and the shaft wall.

[0003] Foreign objects are stuck between the edge of the car bottom and the shaft wall. When the traction wire rope connected to the car bottom is reeled in by the elevator main unit, the car bottom is blocked by the foreign objects and cannot move up with the traction wire rope, making the traction wire rope between the car bottom and the elevator main unit easily pulled and damaged, or even broken, endangering the safety of passengers.

[0004] Therefore, how to stop the elevator from running when a foreign object falls between the edge of the car bottom and the shaft wall to protect the safety of passengers is a technical problem that needs to be solved urgently by technicians in this field. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention proposes a platform elevator car bottom edge protection device, which can stop the elevator from running when foreign objects fall between the edge of the car bottom and the shaft wall, thereby protecting the safety of passengers.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A platform elevator car bottom edge protection device comprises a safety touch plate, an elastic component and a micro switch. The safety touch plate is arranged at the edge of the car bottom, the upper end of the elastic component is connected to the safety touch plate, the lower end of the elastic component is connected to the lower end of the car bottom, the micro switch is arranged below the safety touch plate, the micro switch is connected to the lower end of the car bottom, and the micro switch is electrically connected to the elevator main unit.

[0008] Furthermore, the car platform includes a car platform panel and a lifting member, the lifting member includes a connecting bottom plate, a connecting vertical plate, a car rope head plate, a vertical beam connecting plate, and a vertical beam fixing plate, the connecting bottom plate is connected to one end of the car platform panel, the lower end of the connecting vertical plate is connected to the connecting bottom plate, the car rope head plate is connected to the upper end of the connecting vertical plate, the vertical beam connecting plate is arranged on a side of the connecting vertical plate away from the car platform panel, both ends of the connecting vertical plate are connected to the vertical beam connecting plate, and the vertical beam fixing plate is connected to a side of the vertical beam connecting plate away from the connecting vertical plate.

[0009] Furthermore, the lower end surface of the car floor panel is provided with car floor reinforcement ribs.

[0010] Furthermore, the elastic component includes a spring support plate and a spring. There are multiple spring supports, which are evenly distributed along the edge of the car bottom panel. The spring support plate is connected to the lower end of the car bottom reinforcement rib, the upper end of the spring is connected to the safety touch plate, and the lower end of the spring is connected to the spring support plate.

[0011] Furthermore, the spring support plate is provided with a sliding hole, a positioning rod is provided in the sliding hole, the positioning rod slides up and down in the sliding hole, and the upper end of the positioning rod is connected to the safety touch plate.

[0012] Furthermore, the lower end surface of the safety touch plate and the upper end surface of the spring support plate are both provided with a spring fixing ring, the spring is sleeved outside the spring fixing ring, and the positioning rod is gap-matched with the inner ring of the spring fixing ring.

[0013] Furthermore, vertical beam reinforcement ribs are provided between the connecting vertical plates and the vertical beam connecting plates.

[0014] Furthermore, a car rope end plate reinforcement rib is provided between the car rope end plate and the connecting bottom plate.

[0015] The present invention has the beneficial effects:

[0016] 1. When a foreign object falls between the wall of the elevator shaft and the edge of the car bottom, the safety touch plate at the edge of the car bottom is pressed down by the foreign object and moves downward, so that the safety touch plate touches the transmission element of the micro switch located below the safety touch plate, thereby stopping the operation of the elevator host, and thus stopping the elevator, thus avoiding the danger of the traction wire rope between the car bottom and the elevator host being pulled, damaged or even broken, and protecting the safety of passengers.

[0017] 2. The lifting structure of the present invention can effectively save pit space while meeting the overall strength of the car bottom. Because the car bottom of the existing backpack elevator is connected to the backpack frame beam through a 100-200mm thick bracket, the car bottom of the present invention is connected to the backpack frame beam through a lifting member, which reduces the thickness of the car bottom and saves pit space.

[0018] 3. By setting the car bottom reinforcement ribs, the supporting strength of the car bottom panel can be improved, thereby improving the strength of the car bottom.

[0019] 4. By providing a plurality of spring support plates evenly distributed along the edge of the car bottom panel, the stability of the spring assembly supporting the safety touch plate can be improved.

[0020] 5. By setting the positioning rod and the sliding hole, the safety touch plate can only move in the vertical direction, avoiding the shaking of the safety touch plate and improving the stability of the spring-supported safety touch plate.

[0021] 6. By setting a spring fixing ring, the upper end and the lower end of the spring can be sleeved outside the spring fixing ring, thereby increasing the contact area between the safety touch plate and the spring, and the contact area between the spring support plate and the spring, making the spring more reliable when installed on the safety touch plate and the spring support plate.

[0022] 7. By setting the vertical beam reinforcement ribs, the connection strength and stability between the vertical plate and the vertical beam connecting plate can be improved.

[0023] 8. By setting the car rope head plate reinforcement ribs, the car rope head plate reinforcement ribs can assist in supporting the car rope head plate, thereby improving the stability of the car rope head plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the car bottom;

[0025] Figure 2 It is a structural diagram of the car bottom panel and the car bottom reinforcement ribs installed together;

[0026] Figure 3 It is a structural schematic diagram of the lifting component;

[0027] Figure 4 This is a schematic diagram of the structure of the bottom edge protection device of a platform elevator. Figure 1 ;

[0028] Figure 5 This is a schematic diagram of the structure of the bottom edge protection device of a platform elevator. Figure 2 ;

[0029] Figure 6 yes Figure 5 A partial enlarged view of point A;

[0030] Figure 7 This is a schematic diagram of the use of the edge protection device of the platform elevator Figure 1 ;

[0031] Figure 8 This is a schematic diagram of the use of the edge protection device of the platform elevator Figure 2 ;

[0032] Fig. 9 It is a structural schematic diagram of an existing backpack elevator in which the car bottom is installed together with the backpack frame beam through a bracket;

[0033] Fig.10 It is the series circuit diagram of the micro switch and the elevator host.

[0034] Description of reference numerals:

[0035] 1-Car bottom panel,

[0036] 2-car bottom reinforcement ribs, 2-1-first car bottom reinforcement ribs, 2-2-second car bottom reinforcement ribs, 2-3-third car bottom reinforcement ribs,

[0037] 3-lifting member, 3-1-connecting bottom plate, 3-1-1-first connecting bottom plate, 3-1-2-second connecting bottom plate, 3-2-connecting vertical plate, 3-3-car rope head plate, 3-4-vertical beam connecting plate, 3-5-vertical beam fixing plate, 3-5-1-first vertical beam fixing plate, 3-5-2-second vertical beam fixing plate, 3-6-vertical beam reinforcement ribs, 3-7-car rope head plate reinforcement ribs,

[0038] 4-safety touch panel, 4-1-first safety touch panel, 4-2-second safety touch panel,

[0039] 5-elastic component, 5-1-spring support plate, 5-1-1-sliding hole, 5-2-spring, 5-3-spring fixing ring, 5-4-positioning rod,

[0040] 6-micro switch mounting plate, 6-1-folding edge,

[0041] 7- Micro switch,

[0042] 8-rope head rod, 9-backpack frame beam, 10-well wall, 11-foreign matter, 12-bracket. DETAILED DESCRIPTION

[0043] In order to better understand the present invention, the present invention is further described below in conjunction with the accompanying drawings. It is worth noting that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0044] Example:

[0045] A platform elevator car bottom edge protection device comprises a car bottom, a safety touch plate 4, an elastic component 5, and a micro switch 7.

[0046] like Figure 1 As shown, the car platform includes a car platform panel 1 and a lifting member 3.

[0047] like Figure 2As shown, the lower end surface of the car floor panel 1 is provided with a car floor reinforcement rib 2, and the car floor reinforcement rib 2 is made of C-shaped steel. The car floor reinforcement rib 2 includes a first car floor reinforcement rib 2-1, a second car floor reinforcement rib 2-2, and a third car floor reinforcement rib 2-3. The first car floor reinforcement rib 2-1 is arranged at the rear end of the car floor panel 1, and the first car floor reinforcement rib 2-1 is welded and fixed to the car floor panel 1. There are two second car floor reinforcement ribs 2-2, one of which is arranged at the left end of the car floor panel 1, and the other second car floor reinforcement rib 2-2 is arranged at the right end of the car floor panel 1, and the two second car floor reinforcement ribs 2-2 are welded and fixed to the car floor panel 1. There are three third car floor reinforcement ribs 2-3, and the three third car floor reinforcement ribs 2-3 are arranged side by side between the two second car floor reinforcement ribs 2-2, and the three third car floor reinforcement ribs 2-3 are welded and fixed to the car floor panel 1.

[0048] By providing the car floor reinforcing ribs 2 , on the one hand, the supporting strength of the car floor panel 1 can be improved, thereby improving the strength of the car floor; on the other hand, support can also be provided for the installation of the lifting member 3 .

[0049] like Figure 1 As shown, the lifting member 3 is arranged at the front end of the car bottom panel 1, as shown in FIG. Figure 3 As shown, the lifting member 3 includes a connecting bottom plate 3-1, a connecting vertical plate 3-2, a car rope head plate 3-3, a vertical beam connecting plate 3-4, and a vertical beam fixing plate 3-5.

[0050] like Figure 3 As shown, the connecting bottom plate 3-1 includes a first connecting bottom plate 3-1-1 and a second connecting bottom plate 3-1-2, two second connecting bottom plates 3-1-2 are provided, one of the second connecting bottom plates 3-1-2 is provided at the left end of the first connecting bottom plate 3-1-1, and the other second connecting bottom plate 3-1-2 is provided at the right end of the first connecting bottom plate 3-1-1, the first connecting bottom plate 3-1-1 and the two second connecting bottom plates 3-1-2 are integrally formed, the first connecting bottom plate 3-1-1 is welded and fixed to the front end of the third car floor reinforcement rib 2-3, and the second connecting bottom plate 3-1-2 is welded and fixed to the front end of the second car floor reinforcement rib 2-2. By providing the first connecting bottom plate 3-1-1 for supporting the connecting vertical plate 3-2, the contact area between the connecting vertical plate 3-2 and the third car floor reinforcement rib 2-3 can be increased, thereby improving the stability and reliability of the connecting vertical plate 3-2 installed on the third car floor reinforcement rib 2-3. By providing a second connecting bottom plate 3-1-2 for supporting the vertical beam connecting plate 3-4 and the vertical beam fixing plate 3-5, the contact area between the vertical beam connecting plate 3-4 and the vertical beam fixing plate 3-5 and the second car bottom reinforcement rib 2-2 can be increased, thereby improving the stability and reliability of the vertical beam connecting plate 3-4 and the vertical beam fixing plate 3-5 installed on the second car bottom reinforcement rib 2-2.

[0051] like Figure 3As shown, the lower end of the connecting vertical plate 3-2 is welded and fixed to the upper end surface of the first connecting bottom plate 3-1-1. The connecting vertical plate 3-2 is used to place the car rope head plate 3-3.

[0052] like Figure 3 As shown, the car rope head plate 3-3 is arranged horizontally, and the rear end of the car rope head plate 3-3 is welded and fixed to the upper end of the connecting vertical plate 3-2. Figure 7 As shown, the car rope end plate 3-3 is used to install the rope end rod 8, and the rope end rod 8 is used to install the traction wire rope. The traction wire rope is also called the elevator wire rope, which is used to pull the car bottom of the platform elevator to achieve lifting.

[0053] like Figure 3 As shown, there are two vertical beam connection plates 3-4, one of which is welded and fixed to the left end of the vertical plate 3-2, and the other vertical beam connection plate 3-4 is welded and fixed to the right end of the vertical plate 3-2. The lower ends of the two vertical beam connection plates 3-4 are welded and fixed to the second connection bottom plate 3-1-2. Figure 7 As shown, the vertical beam connecting plates 3-4 are used to be connected to the backpack frame vertical beams 9 through fasteners, and the fasteners are bolts or screws. The backpack frame vertical beams 9 are used to slide up and down along the car guide rails.

[0054] like Figure 3 As shown, the vertical beam fixing plate 3-5 is arranged on the side of the vertical beam connecting plate 3-4 away from the connecting vertical plate 3-2. The vertical beam fixing plate 3-5 includes a first vertical beam fixing plate 3-5-1 and a second vertical beam fixing plate 3-5-2 arranged side by side. One side of the first vertical beam fixing plate 3-5-1 is welded and fixed to the end of the vertical beam connecting plate 3-4 away from the connecting vertical plate 3-2, and the lower end of the first vertical beam fixing plate 3-5-1 is welded and fixed to the end of the second connecting bottom plate 3-1-2 away from the first connecting bottom plate 3-1-1; one side of the second vertical beam fixing plate 3-5-2 is welded and fixed to the end of the vertical beam connecting plate 3-4 close to the connecting vertical plate 3-2, and the lower end of the second vertical beam fixing plate 3-5-2 is welded and fixed to the end of the second connecting bottom plate 3-1-2 close to the first connecting bottom plate 3-1-1. Figure 7 As shown, the vertical beam fixing plate 3-5 is also used to be connected to the backpack frame vertical beam 9 through fasteners.

[0055] like Fig. 9 As shown, the car floor of the existing backpack elevator is connected to the backpack frame beam 9 through a 100-200mm thick bracket 12, and the bracket 12 is arranged on the lower end surface of the car floor of the backpack elevator. The thickness of the car floor here refers to the total thickness of the car floor panel 1 and the bracket 12, while the car floor of this embodiment is connected to the backpack frame beam 9 through a lifting member 3. The thickness of the car floor of this embodiment refers to the total thickness of the car floor panel 1 and the car floor reinforcement rib 2. Therefore, compared with the thickness of the existing car floor, this embodiment can reduce the thickness of the car floor by setting the lifting member 3, thereby saving the space of the pit.

[0056] like Figure 3 As shown, a vertical beam reinforcement rib 3-6 is welded and fixed between the connecting vertical plate 3-2 and the vertical beam connecting plate 3-4. By providing the vertical beam reinforcement rib 3-6, the connection strength and stability of the connecting vertical plate 3-2 and the vertical beam connecting plate 3-4 can be improved.

[0057] like Figure 3 As shown, a car rope end plate reinforcement rib 3-7 is provided between the car rope end plate 3-3 and the first connecting bottom plate 3-1-1, the upper end of the car rope end plate reinforcement rib 3-7 is welded and fixed to the car rope end plate 3-3, the lower end of the car rope end plate reinforcement rib 3-7 is welded and fixed to the first connecting bottom plate 3-1-1, and one side of the car rope end plate reinforcement rib 3-7 is welded and fixed to the connecting vertical plate 3-2. By providing the car rope end plate reinforcement rib 3-7, the car rope end plate reinforcement rib 3-7 can assist in supporting the car rope end plate 3-3, thereby improving the stability of the car rope end plate 3-3.

[0058] like Figure 4 As shown, the safety touch panel 4 includes a first safety touch panel 4-1 and a second safety touch panel 4-2. The first safety touch panel 4-1 is arranged at the rear end of the car floor panel 1, and two second safety touch panels 4-2 are arranged, one of which is arranged at the left end of the car floor panel 1, and the other second safety touch panel 4-2 is arranged at the right end of the car floor panel 1.

[0059] like Figure 6 As shown, the elastic component 5 includes a spring support plate 5-1 and a spring 5-2. Figure 5 As shown, there are multiple spring support plates 5-1, and the multiple spring support plates 5-1 are evenly distributed on the edge of the car bottom panel 1, thereby improving the stability of the spring assembly 5 supporting the safety touch plate 4. Figure 6 As shown, the spring support plate 5-1 is welded and fixed to the lower end surface of the car bottom reinforcement rib 2. The upper end of the spring 5-2 is welded and fixed to the safety touch plate 4, and the lower end of the spring 5-2 is welded and fixed to the spring support plate 5-1.

[0060] like Figure 6As shown, the elastic component 5 also includes a spring fixing ring 5-3 and a positioning rod 5-4. The lower end surface of the safety touch plate 4 and the upper end surface of the spring support plate 5-1 are both provided with a spring fixing ring 5-3. The spring fixing ring 5-3 provided on the lower end surface of the safety touch plate 4 is welded and fixed to the safety touch plate 4, and the spring fixing ring 5-3 provided on the upper end surface of the spring support plate 5-1 is welded and fixed to the spring support plate 5-1. The upper end and the lower end of the spring 5-2 are both sleeved outside the spring fixing ring 5-3. By providing the spring fixing ring 5-3, the upper end and the lower end of the spring 5-2 can be sleeved outside the spring fixing ring 5-3, thereby increasing the contact area between the safety touch plate 4 and the spring 5-2, and the contact area between the spring support plate 5-1 and the spring 5-2, so that the spring 5-2 is more reliable when installed on the safety touch plate 4 and the spring support plate 5-1.

[0061] like Figure 6 As shown, the spring support plate 5-1 is provided with a sliding hole 5-1-1, and the positioning rod 5-4 is arranged in the sliding hole 5-1-1. The positioning rod 5-4 is clearance-matched with the inner ring of the spring fixing ring 5-3 arranged on the lower end surface of the safety touch plate 4, the inner ring of the spring fixing ring 5-3 arranged on the upper end surface of the spring support plate 5-1, and the sliding hole 5-1-1 from top to bottom. The positioning rod 5-4 slides up and down in the sliding hole 5-1-1 and the inner ring of the spring fixing ring 5-3. The upper end of the positioning rod 5-4 is welded and fixed to the lower end surface of the spring support plate 4. By providing the positioning rod 5-4 and the sliding hole 5-1-1, the stability of the spring 5-2 supporting the safety touch plate 4 can be improved, so that the safety touch plate 4 can only move in the vertical direction. If the positioning rod 5-4 and the sliding hole 5-1-1 are not provided, the safety touch plate 4 is prone to shaking and unstable.

[0062] like Figure 6 As shown, the micro switch mounting plate 6 is arranged below the safety touch plate 4, the micro switch mounting plate 6 is arranged horizontally, one end of the micro switch mounting plate 6 is bent downward to form a folded edge 6-1, and the folded edge 6-1 is welded and fixed to the car bottom reinforcement rib 2. In this embodiment, six micro switch mounting plates 6 are provided, and these six micro switch mounting plates 6 are evenly distributed below the safety touch plate 4. One micro switch mounting plate 6 is used to install one micro switch 7. In this embodiment, a micro switch 7 of model RZ-15GQ-B3 is used.

[0063] like Fig.10 As shown, the six micro switches 7 in this embodiment are all connected in series with the elevator main engine. The elevator main engine pulls the car bottom panel 1 by winding the traction wire rope to achieve the lifting of the elevator.

[0064] like Figure 8As shown in the figure, when a foreign object 11 falls into the gap between the hoistway wall 10 of the elevator shaft and the safety touch plate 4, since the safety touch plate 4 is connected to the spring support plate 5-1 through the spring 5-2, the foreign object 11 will press the safety touch plate 4 to move downward. Since the micro switch 7 is arranged below the safety touch plate 4, the safety touch plate 4 pressed down by the foreign object 11 will touch the transmission element of the micro switch 7. In this embodiment, since the model of the micro switch 7 is RZ-15GQ-B3, the transmission element of the micro switch 7 of the RZ-15GQ-B3 model The safety touch plate 4 pressed down by the foreign object 11 will touch the push pin of the safety touch plate 7 of model RZ-15GQ-B3, and the push pin will move the action reed inside the microswitch 7, which was originally in contact with the normally closed contact, to the normally open contact, thereby changing the series circuit between the microswitch 7 and the elevator host from the on state to the off state, stopping the elevator host from running, and also stopping the elevator, thereby avoiding the dangerous situation mentioned in the prior art. Therefore, the car bottom edge protection device of a platform elevator in this embodiment plays a protective role and protects the safety of passengers.

[0065] When the foreign object 11 that has fallen into the gap between the hoistway wall 10 of the elevator shaft and the safety touch plate 4 is taken out, the safety touch plate 4 moves upward under the elastic force of the spring 5-2, thereby separating the safety touch plate 4 from the microswitch 7. The microswitch 7 is no longer subjected to the downward pressure of the safety touch plate 4, so that the action reed inside the microswitch 7 contacts the normally closed contact again, and the series circuit between the microswitch 7 and the elevator host changes from the disconnected state to the conductive state again, so that the elevator host can operate normally, and thus the elevator can operate normally.

[0066] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A platform elevator car bottom edge protection device, characterized in that: It includes a safety touch plate, an elastic component, and a micro switch. The safety touch plate is arranged at the edge of the car bottom, and the micro switch is arranged below the safety touch plate. The micro switch is electrically connected to the elevator host. The car platform comprises a car platform panel and a lifting member, the lifting member is arranged at the front end of the car platform panel, the safety touch plate comprises a first safety touch plate and a second safety touch plate, the first safety touch plate is arranged at the rear end of the car platform panel, and two second safety touch plates are provided, one second safety touch plate is arranged at the left end of the car platform panel, and the other second safety touch plate is arranged at the right end of the car platform panel; The lower end surface of the car bottom panel is provided with a car bottom reinforcement rib; The elastic component includes a spring support plate and a spring. A plurality of spring support plates are provided. The plurality of spring support plates are evenly distributed along the edge of the car bottom panel. The spring support plate is connected to the lower end of the car bottom reinforcement rib. The upper end of the spring is connected to the safety touch plate. The lower end of the spring is connected to the spring support plate. The micro switch is installed on a micro switch mounting plate, the micro switch mounting plate is arranged below the safety touch plate, the micro switch mounting plate is arranged horizontally, one end of the micro switch mounting plate is bent downward to form a folded edge, and the folded edge is welded and fixed to the car bottom reinforcement rib.

2. The platform elevator car bottom edge protection device according to claim 1, characterized in that: The lifting member includes a connecting bottom plate, a connecting vertical plate, a car rope head plate, a vertical beam connecting plate, and a vertical beam fixing plate. The connecting bottom plate is connected to the front end of the car bottom panel, the lower end of the connecting vertical plate is connected to the connecting bottom plate, the car rope head plate is connected to the upper end of the connecting vertical plate, the vertical beam connecting plate is arranged on the side of the connecting vertical plate away from the car bottom panel, both ends of the connecting vertical plate are connected to the vertical beam connecting plate, and the vertical beam fixing plate is connected to the side of the vertical beam connecting plate away from the connecting vertical plate.

3. The platform elevator car bottom edge protection device according to claim 1, characterized in that: The spring support plate is provided with a sliding hole, a positioning rod is provided in the sliding hole, the positioning rod slides up and down in the sliding hole, and the upper end of the positioning rod is connected with the safety touch plate.

4. The platform elevator car bottom edge protection device according to claim 3, characterized in that: The lower end surface of the safety touch plate and the upper end surface of the spring support plate are both provided with a spring fixing ring, the spring is sleeved outside the spring fixing ring, and the positioning rod is clearance-matched with the inner ring of the spring fixing ring.

5. The platform elevator car bottom edge protection device according to claim 2, characterized in that: Vertical beam reinforcement ribs are arranged between the connecting vertical plates and the vertical beam connecting plates.

6. The platform elevator car bottom edge protection device according to claim 2, characterized in that: A car rope end plate reinforcement rib is arranged between the car rope end plate and the connecting bottom plate.

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