CN108275552B

CN108275552B - Foldable elevator toe guard suitable for shallow pit

Info

Publication number: CN108275552B
Application number: CN201810265121.7A
Authority: CN
Inventors: 倪斌; 申建国; 徐学良; 陈水平; 吴春华
Original assignee: Yida Express Elevator Co ltd
Current assignee: Yida Express Elevator Co ltd
Priority date: 2018-03-28
Filing date: 2018-03-28
Publication date: 2023-05-12
Anticipated expiration: 2038-03-28
Also published as: CN108275552A

Abstract

The invention discloses a foldable elevator foot guard suitable for a shallow pit, which comprises an upper foot guard and a lower foot guard which are mutually connected through a spring hinge, wherein two ends of the spring hinge are respectively connected with the upper foot guard and the lower foot guard through an upper U-shaped bend and a lower U-shaped bend, one side of the lower foot guard at the lower end of the lower U-shaped bend is provided with a lock shaft bracket, the lock shaft bracket is provided with a lock shaft, the bottom of the lock shaft is provided with a lock shaft fixing plate positioned at the outer side of the lock shaft bracket, the lock shaft is provided with a reset spring and a spring retainer ring positioned in the lock shaft bracket, the upper end of the lock shaft sequentially penetrates through the lower U-shaped bend and the upper U-shaped bend to be connected with a safety switch, one side of the lower foot guard is provided with a rotating shaft, one end of the rotating shaft is provided with a collision plate, and a collision seat is arranged below the rotating shaft and provided with a stop rod and a deflector rod. The invention can be suitable for the use of the elevator shallow pit and has the characteristics of high working stability and good safety.

Description

Foldable elevator toe guard suitable for shallow pit

Technical Field

The invention relates to a foot guard plate, in particular to a foldable elevator foot guard plate applicable to a shallow pit.

Background

The elevator toe guard is generally arranged below the hoistway door and the sill of the car door, passengers are prevented from entering the hoistway by mistake due to gaps between the car and the hoistway door sill, the length of the vertical height of the toe guard is an important factor for ensuring the safety of the passengers, and in GB7588-2003, the relevant clause prescribes that the vertical height of the toe guard should not be lower than 750mm, and the inclined plane height should not be lower than 35mm. However, many elevators are affected by the installation environment during the installation process, and particularly when an elevator is installed in an old building, the construction of the pit of the elevator is often limited, so that the foot guard plate of the bridge box is interfered with the pit after the bridge box is completely dropped, thereby causing design difficulty and increasing the cost of the elevator. Therefore, there is a need for a toe guard that can be adapted to an elevator shallow pit without changing the vertical height.

Disclosure of Invention

The invention aims to provide a foldable elevator toe guard suitable for a shallow pit. The elevator pit supporting device can be suitable for the use of elevator shallow pits and has the characteristics of high working stability and good safety.

The technical scheme of the invention is as follows: the utility model provides a collapsible elevator toe guard suitable for shallow pit, includes through last toe guard and lower toe guard of spring hinge interconnect, and lower toe guard one side is equipped with the pivot, and pivot one end is equipped with the striking board, is equipped with the collision seat below the striking board, is equipped with in the pivot with lower toe guard complex dead lever.

In the foldable elevator toe guard suitable for the shallow pit, two sides of the upper toe guard and the lower toe guard are respectively provided with a baffle, and the end parts of the baffles of the upper toe guard and the lower toe guard are mutually attached.

In the foldable elevator toe guard suitable for the shallow pit, the collision seat comprises a base, the lower end of the base is fixed in the elevator pit, and the upper end of the base is provided with rotatable rollers.

In the foldable elevator toe guard suitable for shallow pit, the upper toe guard and the lower toe guard are respectively connected through upper U-shaped bending and lower U-shaped bending at two ends of the spring hinge, a lock shaft support is arranged on one side of the lower toe guard at the lower end of the lower U-shaped bending, a lock shaft is arranged on the lock shaft support, a lock shaft fixing plate located at the outer side of the lock shaft support is arranged at the bottom of the lock shaft, a safety switch is connected to the upper end of the lock shaft through the lower U-shaped bending and the upper U-shaped bending in sequence, a deflector rod is arranged between the lock shaft support and the lock shaft fixing plate, and one end of the deflector rod is connected with a rotating shaft.

In the foldable elevator toe guard suitable for the shallow pit, the lock shaft is provided with the reset spring and the spring retainer ring which are positioned in the lock shaft bracket.

In the foldable elevator toe guard suitable for the shallow pit, the lock shaft is provided with the limiting step matched with the lock shaft bracket.

In the foldable elevator toe guard suitable for the shallow pit, the two sides of the rotating shaft are connected with the lower toe guard through the shaft sleeve, and the inner side of the shaft sleeve is provided with the pin shaft fixed on the rotating shaft.

The application method of the foldable elevator toe guard suitable for the shallow pit comprises the following steps: when the elevator foot guard plate runs to the elevator pit, the collision plate collides with the idler wheel and then drives the stop rod and the deflector rod to rotate; when the striking plate rotates, the shift lever drives the lock shaft fixing plate to descend, the lock shaft is separated from the safety switch, the upper U-shaped bending and the lower U-shaped bending in sequence in the descending process through the lock shaft fixing plate, and when the lock shaft is separated from the lower U-shaped bending, the stop lever is contacted with the lower U-shaped bending and drives the lower foot protection plate to rotate to a folding state along the spring hinge; when the elevator foot guard plate rises, the collision plate is separated from the roller, so that the lower foot guard plate returns to the unfolding state under the action of self gravity and the spring hinge, and the lock shaft passes through the lower U-shaped bend and the upper U-shaped bend again under the drive of the reset spring when the lower foot guard plate is unfolded and is connected with the safety switch; the safety switch detects the folding state of the lower foot guard plate in the working process of the elevator, and the stable work of the foot guard plate is ensured.

Compared with the prior art, the invention can lead the rotating shaft to drive the lower foot guard plate to rotate through the stop rod after rotating through the matching of the collision plate and the collision seat, so that the occupied height of the foot guard plate can be reduced by folding the lower foot guard plate when the invention approaches to the pit, and the foot guard plate can be stably placed in the shallow pit when the bridge carriage reaches to the low position; when the lift car leaves the pit, the lower foot guard plate can automatically return to a vertical state under the action of self gravity and a spring hinge, so that the vertical height of the foot guard plate reaches more than 750mm when the lift works, thereby effectively blocking and protecting passengers, having better safety and working stability, and having lower production cost without being finished by electronic equipment assistance in the folding and resetting processes; when the lower foot guard plate is in a vertical state, the upper foot guard plate and the lower foot guard plate can be limited and locked through the matching of the lock shaft and the U-shaped bending, so that the lower foot guard plate is always kept in a completely vertical state after being unfolded and can bear certain thrust, and the safety and the working stability of the invention are further improved; the lock shaft can be automatically separated from the upper U-shaped bending and the lower U-shaped bending after the rotating shaft rotates through the cooperation of the deflector rod and the lock shaft fixing plate, so that the lower foot guard plate can rotate to a designated angle along the spring hinge after the lift car descends in place, and the safety switch can also detect the folding state of the foot guard plate when the bridge car ascends and descends, so that workers can quickly find and repair the foot guard plate after the fault occurs, and the safety of the invention is improved. In addition, the stress intensity and deformation resistance of the upper foot guard plate and the lower foot guard plate can be enhanced through the baffles at the two sides of the foot guard plate, and the connecting pieces such as the lock shaft and the spring hinge can be protected when the foot guard plate is subjected to vibration or lateral force, so that the problem that the connecting pieces are bent or loosened due to overlarge vibration is avoided, and the safety of the foot guard plate is further improved; the limiting step can limit the lock shaft, so that the lock shaft fixing plate is prevented from being separated from the deflector rod due to axial rotation when the lock shaft is lifted, and the working stability of the invention is further improved; friction loss of the rotating shaft during rotation can be reduced through the cooperation of the shaft sleeve and the rotating shaft, and the axial position of the rotating shaft can be limited through the pin shaft on the inner side of the shaft sleeve, so that stable connection between the rotating shaft and the lower foot protection plate is ensured; and the idler wheel can be matched with the collision plate to rotate after being contacted with the collision plate, so that the damage or deformation of the surface of the collision plate caused by friction is avoided, and the service life of the collision plate is further prolonged. Therefore, the invention can keep the vertical height above 750mm when the bridge carriage is lifted, and can complete the shallow pit placement of the foot guard plate by folding the lower foot guard plate when the bridge carriage is lowered to the low position, so that the foot guard plate can simultaneously complete the protection of passengers and the applicability to the elevator shallow pit, and the invention has high working stability and good safety.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is an enlarged view at A of FIG. 1;

FIG. 3 is a cross-sectional view taken along the direction C of FIG. 2;

FIG. 4 is an enlarged view at B of FIG. 1;

FIG. 5 is a schematic view of the construction of the stop lever and the lever;

fig. 6 is an outline view of the present invention in a folded state.

Reference numerals: the novel safety hinge comprises a 1-spring hinge, a 2-upper foot guard, a 3-lower foot guard, a 4-lock shaft bracket, a 5-lock shaft, a 6-lock shaft fixing plate, a 7-return spring, an 8-spring retainer ring, a 9-safety switch, a 10-rotating shaft, an 11-collision plate, a 12-collision seat, a 13-stop rod, a 14-deflector rod, a 15-baffle plate, a 16-shaft sleeve, a 17-pin shaft, a 201-upper U-shaped bending, a 301-lower U-shaped bending, a 121-base, 122-rollers, 131-locking rings, 132-pressing plates and 501-limiting steps.

Detailed Description

The invention is further illustrated by the following examples, which are not intended to be limiting.

Examples: the utility model provides a collapsible elevator toe guard suitable for shallow pit, the structure is as shown in figure 1, includes through spring hinge 1 interconnect's last toe guard 2 and lower toe guard 3, goes up toe guard 2 top and elevator sill interconnect, and lower toe guard 3 one side is equipped with pivot 10, and pivot 10 one end is equipped with hits board 11, hits board 11 below and is equipped with collision seat 12, is equipped with on the pivot 10 with lower toe guard 3 complex dead lever 13.

The two sides of the upper foot guard plate 2 and the lower foot guard plate 3 are respectively provided with a baffle 15, and the end parts of the baffle 15 of the upper foot guard plate 2 and the end part of the baffle 15 of the lower foot guard plate 3 are mutually attached.

The crash seat 12 comprises a base 121, the lower end of the base 121 is fixed in the elevator pit, and a rotatable roller 122 is arranged at the upper end of the base 121.

The two ends of the spring hinge 1 are respectively connected with the upper foot guard plate 2 and the lower foot guard plate 3 through an upper U-shaped bending 201 and a lower U-shaped bending 301, a lock shaft support 4 is arranged on one side of the lower foot guard plate 3 at the lower end of the lower U-shaped bending 301, a lock shaft 5 is arranged on the lock shaft support 4, a lock shaft fixing plate 6 positioned on the outer side of the lock shaft support 4 is arranged at the bottom of the lock shaft 5, the upper end of the lock shaft 5 sequentially penetrates through the lower U-shaped bending 301 and the upper U-shaped bending 201 to be connected with a safety switch 9, a deflector rod 14 is arranged between the lock shaft support 4 and the lock shaft fixing plate 6, and one end of the deflector rod 14 is connected with a rotating shaft 10.

The lock shaft 5 is provided with a return spring 7 and a spring retainer 8 which are positioned in the lock shaft bracket 4.

The lock shaft 5 is provided with a limit step 501 matched with the lock shaft bracket 4.

The two sides of the rotating shaft 10 are connected with the lower foot protection plates 3 through shaft sleeves 16, the outer rings of the shaft sleeves 16 are fixedly connected with the lower foot protection plates 3, the inner rings of the shaft sleeves 16 are rotatably connected with the rotating shaft 10, and pin shafts 17 fixed on the rotating shaft 10 are arranged on the inner sides of the shaft sleeves 16.

The application method of the foldable elevator toe guard suitable for the shallow pit comprises the following steps: when the elevator foot guard plate runs to the elevator pit, the collision plate 11 collides with the roller 122 and then drives the stop rod 13 and the deflector rod 14 to rotate; when the striking plate 11 rotates, the deflector rod 14 firstly drives the lock shaft fixing plate 6 to descend, and the lock shaft 5 is separated from the safety switch 9, the upper U-shaped bending 201 and the lower U-shaped bending 301 in sequence in the descending process through the lock shaft fixing plate 6, and when the lock shaft 5 is separated from the lower U-shaped bending 301, the stop rod 13 is contacted with the lower U-shaped bending 301 and drives the lower foot guard plate 3 to rotate to a folding state along the spring hinge 1; when the elevator toe guard rises, the striking plate 11 is separated from the roller 122, so that the lower toe guard 3 returns to the unfolding state under the action of self gravity and the spring hinge 1, and when the lower toe guard 3 is unfolded, the lock shaft 5 passes through the lower U-shaped bend 301 and the upper U-shaped bend 201 again under the drive of the reset spring 7 and is connected with the safety switch 9; the safety switch 9 detects the folding state of the lower foot guard plate in the working process of the elevator, and ensures the stable work of the foot guard plate.

The working principle of the invention is as follows: the elevator is in an unfolding state in the lifting process of the elevator, and the vertical height of the foot guard plate is not lower than 750mm through the vertical connection of the upper foot guard plate 2 and the lower foot guard plate 3, so that national standard regulations in GB7588-2003 are met and passengers are effectively protected; the invention can keep the upper foot guard 2 and the lower foot guard 3 in a completely vertical state by sequentially passing through the lock shaft 5 of the lower U-shaped bend 301 and the upper U-shaped bend 201 when being unfolded, and plays a limiting role on the upper foot guard 2 and the lower foot guard 3, so that the lower foot guard is prevented from being folded after being collided by passengers, thereby playing a protection role; the stress intensity of the upper foot guard plate 2 and the lower foot guard plate 3 can be improved through the baffle plates 15 on the two sides of the foot guard plate, so that the deformation of the foot guard plate when the foot guard plate is subjected to external force is reduced, and the safety and the service life of the foot guard plate are improved; the pin shafts 17 on two sides of the rotating shaft can play a limiting role on the rotating shaft, so that the rotating shaft 10 is prevented from being separated from the lower foot protection plate 3 due to vibration of the bridge box; in the lifting process of the car, the safety switch 9 judges whether the lower foot guard plate 3 is in a unfolding state or not through detecting the connection relation with the lock shaft 5, so that the protection effect of the foot guard plate on passengers is ensured.

When the elevator bridge box descends to approach the pit, the striking plate 11 at one end of the rotating shaft 10 contacts with the roller 122 and drives the rotating shaft 10 to rotate to a certain angle under the action of the roller 122; when the rotating shaft 10 rotates, the shift lever 14 drives the lock shaft 5 to descend through the lock shaft fixing plate 6, and the lock shaft 5 can be kept in a vertical state in the lifting process through the U-shaped lock shaft support 4, so that the problem of inclination or clamping stagnation is prevented. The lock shaft 5 is separated from the safety switch 9, the upper U-shaped bending 201 and the lower U-shaped bending 301 in sequence after descending, so that the upper foot guard 2 and the lower foot guard 3 are unlocked, the lock shaft 5 can be prevented from rotating axially through the limiting step 501 in the lifting process, and the lock shaft 5 is prevented from being separated from the deflector rod 14 after rotating, so that the lock shaft fixing plate 6 is prevented from being separated from the deflector rod 14. When the lock shaft 5 is separated from the lower U-shaped bending 301, the stop rod 13 rotates to a position contacting the lower U-shaped bending 301, and the lower foot guard plate 3 is driven to rotate along the spring hinge 1 under the subsequent rotation action of the rotating shaft 10, so that the lower foot guard plate is folded. When the collision plate 11 rotates to a vertical state, the lower foot protection plate 3 and the upper foot protection plate 2 form 90-degree bending under the drive of the stop rod 13, so that the elevator can be stably placed in the elevator pit; when the car descends to the low position, the safety switch 9 judges whether the lower toe guard 3 is in a folded state by detecting the connection relation with the lock shaft 5, so that a worker can detect the working state of the toe guard and find and repair the toe guard at the first time after the failure.

When the elevator car ascends to separate the collision plate 11 from the roller 122, the lower foot protection plate 3 automatically returns to the unfolding position under the action of gravity and the spring hinge 1; the lock shaft 5 passes through the lower U-shaped bend 301 and the upper U-shaped bend 201 again under the action of the return spring 7 and the spring retainer ring 8 and contacts the safety switch 9; the lock shaft 5 drives the lock shaft fixing plate 6 in the resetting process to enable the lock shaft fixing plate 6 and the lock shaft bracket 4 to be in a pressing state on the deflector rod 14 again, and the deflector rod 14 causes the rotation of the rotating shaft 10 after pressing to enable the stop rod 13 and the collision plate 11 to return to a natural state. According to the invention, the lower foot protection plate 3 can be folded and reset automatically without electric equipment through the cooperation of the connecting pieces, and the connecting pieces can be restored to a natural state after the lift car is lifted, so that the production cost is low and the working stability is good.

Claims

1. Foldable elevator toe guard suitable for shallow pit, its characterized in that: the anti-collision device comprises an upper foot protection plate (2) and a lower foot protection plate (3) which are connected with each other through a spring hinge (1), wherein a rotating shaft (10) is arranged on one side of the lower foot protection plate (3), a collision plate (11) is arranged at one end of the rotating shaft (10), a collision seat (12) is arranged below the collision plate (11), and a stop rod (13) matched with the lower foot protection plate (3) is arranged on the rotating shaft (10);

baffle plates (15) are arranged on two sides of the upper foot guard plate (2) and the lower foot guard plate (3), and the end parts of the baffle plates (15) of the upper foot guard plate (2) and the lower foot guard plate (3) are mutually attached;

the spring hinge (1) both ends are respectively through last U-shaped bend (201) and lower U-shaped bend (301) connection upper guard plate (2) and lower guard plate (3), lower guard plate (3) one side of lower U-shaped bend (301) lower extreme is equipped with lock axle support (4), be equipped with lock axle (5) on lock axle support (4), lock axle (5) bottom is equipped with lock axle fixed plate (6) that are located lock axle support (4) outside, lock axle (5) upper end is passed down U-shaped bend (301) and is connected with safety switch (9) with last U-shaped bend (201) in proper order, be equipped with driving lever (14) between lock axle support (4) and lock axle fixed plate (6), pivot (10) are connected to driving lever (14) one end.

2. A collapsible elevator toe guard for a shallow pit according to claim 1, wherein: the collision seat (12) comprises a base (121), the lower end of the base (121) is fixed in the elevator pit, and a rotatable roller (122) is arranged at the upper end of the base (121).

3. A collapsible elevator toe guard for a shallow pit according to claim 1, wherein: the lock shaft (5) is provided with a return spring (7) and a spring retainer ring (8) which are positioned in the lock shaft bracket (4).

4. A collapsible elevator toe guard for a shallow pit according to claim 1, wherein: the lock shaft (5) is provided with a limiting step (501) matched with the lock shaft bracket (4).

5. A collapsible elevator toe guard for a shallow pit according to claim 1, wherein: two sides of the rotating shaft (10) are connected with the lower foot protection plate (3) through shaft sleeves (16), and pin shafts (17) fixed on the rotating shaft (10) are arranged on the inner sides of the shaft sleeves (16).