CN108373093B - Foot guard device with adjustable height - Google Patents
Foot guard device with adjustable height Download PDFInfo
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- CN108373093B CN108373093B CN201810219058.3A CN201810219058A CN108373093B CN 108373093 B CN108373093 B CN 108373093B CN 201810219058 A CN201810219058 A CN 201810219058A CN 108373093 B CN108373093 B CN 108373093B
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- Prior art keywords
- pull rod
- reinforcing pull
- lock
- foot
- plate
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 54
- 230000005484 gravity Effects 0.000 claims abstract description 17
- 238000012423 maintenance Methods 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 32
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 230000004044 response Effects 0.000 claims description 6
- 238000005452 bending Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/30—Constructional features of doors or gates
- B66B13/301—Details of door sills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Types And Forms Of Lifts (AREA)
- Vehicle Step Arrangements And Article Storage (AREA)
- Elevator Door Apparatuses (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention discloses a foot guard device with adjustable height, which comprises: the foot guard device comprises a sill, at least two stages of foot guard plates which are arranged on the sill and can be slidably folded, and a locking device for keeping the foot guard plates in a folded state, wherein the foot guard plate device also comprises a reinforcing pull rod for keeping the foot guard plates in an unfolded state, one end of the reinforcing pull rod is connected with the foot guard plate at the lowest end along the gravity direction, and the other end of the reinforcing pull rod is connected with the bottom of a car or the sill. The foot guard device with adjustable height is suitable for shallow pits, can meet national standard requirements, and can reduce running and maintenance risks of the elevator under the working condition of the shallow pits to the greatest extent, so that the safety of the elevator is not different from that of the elevator under a conventional hoistway.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to a foot guard device with adjustable height.
Background
The GB7588-2003 safety regulations for elevator manufacture and installation require that each car sill be provided with a foot guard having a width equal to the overall net width of the entrance of the corresponding landing. The vertical part of the foot guard plate is downward extended to form an inclined plane, the included angle between the inclined plane and the horizontal plane is larger than 60 degrees, and the projection depth of the inclined plane on the horizontal plane is not smaller than 20mm. The height of the vertical portion of the toe guard should not be less than 0.75m.
The function of the foot guard is to avoid the possibility of personal injury when the car suddenly moves upwards at the flat landing position and the danger of enabling passengers outside the landing door to step into the clearance of the elevator shaft is generated between the car and the landing door sill.
In order to meet the national standard requirements, the pit depth of the elevator is never lower than 0.79m during normal elevator inspection. However, the depth of the elevator shaft in the building is limited by various factors, so that the pit depth requirement cannot be met, particularly, the elevator is additionally installed in an old community, a large number of pipelines are buried underground, the pipe moving process is complicated, and the pit cannot be deep dug to reach the depth of more than 0.79m.
Disclosure of Invention
The invention provides a foot guard device with adjustable height, which is applicable to shallow pits and meets national standard requirements.
A height-adjustable toe guard apparatus comprising: the foot guard device comprises a sill, at least two stages of foot guard plates which are arranged on the sill and can be slidably folded, and a locking device for keeping the foot guard plates in a folded state, wherein the foot guard plate device also comprises a reinforcing pull rod for keeping the foot guard plates in an unfolded state, one end of the reinforcing pull rod is connected with the foot guard plate at the lowest end along the gravity direction, and the other end of the reinforcing pull rod is connected with the bottom of a car or the sill.
The foot guard device provided by the invention has two states, when the elevator normally operates, the foot guard at each level is mutually slid and folded to a folding state, and the height of the foot guard is lower in the folding state, so that the foot guard device is suitable for the requirement of a shallow pit; when the elevator needs to be overhauled, the foot protection plates at all levels are unfolded, so that the height of the foot protection plates is not less than 0.75m, and the national standard requirement is met. In order to ensure that the strength of the foot guard device meets the national standard requirements, a reinforcing pull rod is specially arranged. When the foot protection plates at all levels are in an unfolding state, one end of the reinforcing pull rod is connected with the car bottom or the sill, and the other end of the reinforcing pull rod is propped against the foot protection plate at the lowest end in the gravity direction, so that the strength of the foot protection plate is enhanced.
Preferably, a lock hole is formed in the foot guard plate located at the lowermost end along the gravity direction, and the locking device comprises:
a rotary lock core fixed on the sill;
a telescopic pin slidably mounted on the sill;
the lock release transmission piece is connected between the telescopic pin and the rotary lock cylinder;
and the elastic piece drives the telescopic pin to enter the lock hole. The elastic piece pushes the telescopic pin to enter the lock hole by means of self elasticity, the foot protection plates at all levels are kept in a folded state, when unlocking is needed, the lock core is rotated by toggling the key, the telescopic pin is driven to retract by the release lock transmission piece to be separated from the lock hole, and the foot protection plates at all levels are unfolded by means of self gravity.
Preferably, the two adjacent stages of foot protection plates are matched through sliding guide parts arranged on two opposite sides, and the foot protection plate at the lower end along the gravity direction in the two adjacent stages of foot protection plates is provided with a linkage piece for driving the upper end foot protection plate to enter a folding state.
The two adjacent stages of the foot protection plates can slide relatively along the vertical direction so as to realize folding and unfolding, the sliding guide part plays a role in guiding the sliding of the two adjacent stages of the foot protection plates, and the sliding guide part can take various forms, such as mutually matched sliding rails, or mutually matched sliding rails, rollers and the like.
Preferably, the sill is provided with a mounting seat, the telescopic pin is arranged in the mounting seat in a sliding manner, the mounting seat is provided with a strip-shaped guide hole, the telescopic pin is connected with a lock plate extending out of the guide hole along the radial direction, and the lock release transmission piece is connected with the telescopic pin through the lock plate.
The guide hole extends along the moving direction of the telescopic pin, and the joint part of the lock plate and the telescopic pin is positioned in the guide hole and reciprocates in the guide hole. The lock release transmission piece directly or indirectly acts with the lock plate to retract the telescopic pin into the mounting seat through the lock plate, and is separated from the lock hole.
Preferably, one end of the lock release transmission member penetrates through the lock plate, and a reset spring is pressed between the end and the lock plate.
The reset spring is a pressure spring, two ends of the reset spring respectively act on the end part of the release lock transmission piece and the lock plate, the movement of the release lock transmission piece indirectly acts on the lock plate through the reset spring, namely, the lock plate is not rigidly connected with the release lock transmission piece, and when the telescopic pin is reset under the action of the elastic piece, the lock plate can realize the quick reset of the telescopic pin by compressing the reset spring.
Preferably, the lock release transmission member is a transmission rod or a pull rope, a guide plate is arranged on the sill, and a limit guide hole for the lock release transmission member to pass through is formed in the guide plate.
The limiting guide hole is used for limiting the position of the lock release transmission piece and preventing the lock release transmission piece from interfering with other parts.
Preferably, the two lock holes are arranged on two opposite sides of the foot guard plate at the lowest end along the gravity direction, the two telescopic pins are respectively matched with the lock holes at the corresponding sides, and the two telescopic pins are connected to the same rotary lock cylinder through the matched release transmission parts.
The rotation of the same rotary lock cylinder can drive the two unlocking transmission members to move in position at the same time, and each unlocking transmission member drives the corresponding telescopic pin to move.
Preferably, a rotating seat is arranged on the car bottom or the sill, one end of the reinforcing pull rod is hinged with the connected foot protection plate, and the other end of the reinforcing pull rod is slidably positioned and penetrated on the rotating seat.
In the folding and unfolding process of the foot protection plates, the reinforcing pull rod slides in the rotating seat along with the rotation of one end hinged with the foot protection plate, and drives the rotating seat to swing so as to adapt to the change of the positions of the foot protection plates.
Preferably, the reinforcing pull rod has an extending state suitable for the extending of the leg plates of each stage, a positioning groove is arranged on the side wall of the reinforcing pull rod, a sliding pin is arranged on the rotating seat, and a spring for driving the sliding pin to be clamped into the positioning groove to keep the reinforcing pull rod in the extending state.
When the foot protection plates at all levels are in the unfolding state, the sliding pins are clamped into the positioning grooves so as to limit the sliding of the reinforcing pull rods relative to the rotating seats, and the support foot protection plates are in the unfolding state. The foot guard plate has enough strength to meet national standard requirements, and simultaneously, the tail end foot guard plate can be limited to slide downwards to be separated from the travel so as to separate and fall. The pin plates at all levels are protected to be tightly connected with each other, and the safety is ensured.
Preferably, the rotating seat sequentially comprises a head part, a positioning step part and a rod part, wherein the rod part is cylindrical, and a through hole for penetrating the reinforcing pull rod is formed in the head part along the radial direction of the rod part; a connecting hole communicated with the through hole is axially formed at one end of the head part far away from the rod part along the rod part and used for connecting the sliding pin; the car bottom or the sill is provided with a connecting piece connected with the rotating seat, and the connecting piece is provided with a mounting hole matched with the rod part.
Preferably, the outer wall of the rod part is sequentially provided with a smooth surface and a threaded surface from one end close to the positioning step part to the other end, the width of the smooth surface is not smaller than the depth of the mounting hole on the connecting piece, and an open pin hole is formed in the side wall of one end, far away from the positioning step part, of the rod part.
Preferably, one end of the reinforcing pull rod penetrating out of the rotating seat is connected with a limiting piece. So as to prevent the reinforcing pull rod from accidentally sliding out of the rotating seat in the process of sliding in the rotating seat. The limiting piece can be a bayonet lock and the like.
Preferably, the reinforcing pull rod and the rotating seats penetrating through the reinforcing pull rod are provided with two sets, the reinforcing pull rod and the rotating seats are oppositely arranged on two sides of the foot protection plate, a reset connecting piece is connected between the sliding pins on the two rotating seats, the sliding pins at two ends can be pulled to move relatively, and the reinforcing pull rod moves out of the positioning groove, so that the reinforcing pull rod can recover sliding in the sliding seats.
When the foot guard plate is required to be converted into a folding state from an unfolding state, the reset connecting piece is directly pulled to drive the sliding pins at the two ends to move relatively, so that the foot guard plate is moved out of the positioning grooves of the reinforcing pull rods, the limitation of the reinforcing pull rods is relieved, and the foot guard plate can be folded. The reset connecting piece can take various forms such as a connecting rod, a rope and the like.
Preferably, an overhaul response switch which is matched with each other to detect whether the foot guard plate is in a folded state or not is arranged between the sill and the foot guard plate at the lowest end along the gravity direction; an anti-collision limiting device which is matched with each other is arranged between the bottom of the foot guard plate at the lowest end along the gravity direction and the pit.
If the foot protection plates at all levels are not folded in place, the maintenance response switch is not triggered, and the operation of the elevator is stopped. The anti-collision limiting device is used for preventing the foot protection plate at the lowest end from being impacted into the pit in the gravity direction.
The foot guard device with adjustable height is suitable for shallow pits, can meet national standard requirements, and can reduce running and maintenance risks of the elevator under the working condition of the shallow pits to the greatest extent, so that the safety of the elevator is not different from that of the elevator under a conventional hoistway.
Drawings
FIG. 1 is a schematic view of a height-adjustable toe guard apparatus of the present invention in an expanded state;
FIG. 2a is a side view of the height adjustable toe guard apparatus of the present invention in an expanded state;
FIG. 2b is an enlarged view of portion A of FIG. 2 a;
FIG. 3 is a schematic view of the height-adjustable toe guard apparatus of the present invention in a folded state;
fig. 4 is an enlarged view of a portion B in fig. 3;
FIG. 5 is a side view of the height adjustable toe guard apparatus of the present invention in a folded condition;
FIG. 6a is an exploded view of a locking device in a height adjustable toe guard apparatus of the present invention;
FIG. 6b is an enlarged view of portion C of FIG. 6 a;
FIG. 7 is a schematic view (omitted) of the height-adjustable toe guard apparatus of the present invention in a folded state;
fig. 8 is an enlarged view of a portion D in fig. 7;
FIGS. 9 a-9 c are three views of an assembled mounting block, telescoping pin and lock plate of the height adjustable toe guard apparatus of the present invention;
FIG. 9d is a perspective view of the assembled mounting base, telescoping pin and lock plate of the height adjustable toe guard apparatus of the present invention;
FIG. 10a is a schematic view of a pull rod of the height adjustable toe guard apparatus of the present invention;
FIG. 10b is a side view of a tie rod in the height adjustable toe guard apparatus of the present invention;
FIGS. 11 a-11 c are three views of a swivel mount in a height adjustable toe guard apparatus of the present invention;
FIG. 11d is a perspective view of a swivel mount in a height adjustable toe guard apparatus of the present invention;
fig. 12 is a rear view of the height-adjustable toe guard apparatus of the present invention in an expanded state.
In the figure: 1a, a first-stage foot guard; 1b, a middle foot guard plate; 1c, final-stage foot protection plates; 2. a trigger plate; 3. a rotating seat; 3a, a pull rod slide hole; 3b, spring pin connecting holes; 3c, opening pin holes; 3d, head; 3e, a rod part; 3f, a smooth surface; 3g, a thread surface; 3h, positioning the step part; 4. a sliding pin; 5. reinforcing the pull rod; 5a, a pull rod substrate; 5b, a pull rod body; 5c, a hinge hole; 5d, limiting pin holes; 5e, positioning grooves; 6. triggering a roller; 7. a limit switch; 8. a sill support; 9. a bending plate; 9a, a lock hole; 10. a slide rail; 11. a telescopic pin; 12. a lock plate; 13. releasing the lock transmission piece; 14. a mounting base; 15. a striking plate; 16. rotating the lock cylinder; 17. a guide plate; 18. limiting the guide hole; 19. a guide hole; 20. a return spring; 21. a linkage member; 22. a bending plate; 23. resetting the connecting piece; 24. a fixed bracket; 25. and (5) hinging the bolt.
Detailed Description
The height-adjustable toe guard apparatus of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 7, a height-adjustable toe guard apparatus includes: the three-stage foot protection plates are installed at the bottom of the sill bracket 8 and are folded in a sliding manner, and the locking devices are used for keeping the foot protection plates at all stages in a folded state.
As shown in fig. 1, the three-stage toe guard includes: the bottom of the final-stage foot guard plate 1c is provided with a linkage piece 21 for driving the middle foot guard plate 1b to enter a folded state.
The two opposite sides of each stage of foot guard plate are provided with sliding guide parts, the sliding guide parts are mutually matched sliding rails 10, and the sliding of the adjacent two stages of foot guard plates is limited by the sliding rails 10.
The three-stage foot guard has an unfolded state as shown in fig. 1 and a folded state (i.e., a folded state) as shown in fig. 3, and the locking device maintains the three-stage foot guard in the folded state.
As shown in fig. 6a, 6b, 7 and 8, a bending plate 9 with the top extending out of the top end of the final-stage toe guard 1c is fixed on the final-stage toe guard 1c, the bending plate 9 is bent towards the direction away from the side surface of the final-stage toe guard 1c, the bending angle is 11 degrees (i.e. the angle a in fig. 8 is 11 degrees), and a locking hole 9a is formed in the position where the bending plate 9 extends out of the final-stage toe guard 1 c.
As shown in fig. 6a, 6b, 7 and 8, the locking device includes: a manual lock fixed to the sill bracket 8 and having a rotary lock cylinder 16, a telescopic pin 11 slidably mounted to the sill bracket 8, a lock release transmission 13 connected between the telescopic pin 11 and the rotary lock cylinder 16, and an elastic member (not shown) driving the telescopic pin 11 into the lock hole 9a.
As shown in fig. 8 and 9 a-9 d, the bottom of the sill support 8 is provided with a mounting seat 14, the telescopic pin 11 is slidably matched in the mounting seat 14, an elastic piece is positioned in the mounting seat 14, one end of the elastic piece abuts against the mounting seat 14, the other end of the elastic piece is connected with the telescopic pin 11, and the elastic piece pushes the telescopic pin 11 to extend out of the mounting seat 14.
The bottom of the mounting seat 14 is provided with a strip-shaped guide hole 19, the telescopic pin 11 is connected with a lock plate 12 which radially extends out of the guide hole 19, the plate plane of the lock plate 12 is perpendicular to the extending direction of the guide hole 19, and the connecting part of the telescopic pin 11 and the lock plate 12 is positioned in the guide hole 19 and moves along the direction shown by an arrow in fig. 8.
The lock release transmission member 13 is connected with the telescopic pin 11 through the lock plate 12, as shown in fig. 8, one end of the lock release transmission member 13 penetrates through the lock plate 12, and a return spring 20 is pressed between the end and the lock plate 12.
As shown in fig. 6a, the lock release transmission member 13 is a transmission rod or a pull rope, a guide plate 17 is arranged on the sill bracket 8, and a limit guide hole 18 for the lock release transmission member 13 to pass through is arranged on the guide plate 17.
The two lock holes 9a are respectively positioned at two opposite sides of the final-stage foot guard plate 1c, two telescopic pins 11 are respectively matched with the lock holes 9a at the corresponding sides, as shown in fig. 6a, the two telescopic pins 11 are connected to the same rotary lock cylinder 16 through respective matched release transmission pieces 13, and the rotation direction of the rotary lock cylinder 16 is shown by an arrow in fig. 6 a.
The rotating lock cylinder 16 is a triangular lock cylinder, and the folding state of the foot protection plates at all levels can be unlocked only by pulling the rotating lock cylinder 16 through a key.
As shown in fig. 1, 3 and 4, a reinforcing pull rod 5 is further provided, a rotating seat 3 is provided on the car bottom bracket or sill bracket 8, one end of the reinforcing pull rod 5 is hinged with the final-stage toe guard 1c, and the other end is slidably arranged on the rotating seat 3 in a penetrating manner.
As shown in fig. 11a to 11d, the rotating seat 3 sequentially includes a head 3d, a positioning step portion 3h and a rod portion 3e, the rod portion 3e is cylindrical, a smooth surface 3f and a threaded surface 3g are sequentially arranged on the outer wall of the rod portion 3e from one end close to the positioning step portion 3h to the other end, the smooth surface 3f is used for rotating, and the threaded surface 3g is used for being connected and fixed with a nut. The side wall of one end of the rod part 3e far away from the head part 3e is provided with a cotter pin hole 3c in a penetrating way for inserting a cotter pin. The head part 3e is provided with a pull rod sliding hole 3a along the radial direction of the rod part 3e in a penetrating way for penetrating the reinforcing pull rod 5; a spring pin connecting hole 3b communicating with the pull rod slide hole 3a is axially provided along the rod portion 3e at one end of the head portion 3d away from the rod portion 3 e. The head 3e may be any shape, in this embodiment, the head 3e is hexahedral, the rod 3e and the spring pin connecting hole 3b are located at the middle of two opposite end surfaces of the head 3e, and the pull rod sliding hole 3a penetrates through the middle of any two opposite end surfaces of the remaining four end surfaces. The head portion 3e and the rod portion 3e may be of a split structure or may be integrally formed.
As shown in fig. 1, 10a and 10b, the reinforcing pull rod 5 has an extended state adapted to the expansion of each stage of the leg shield, and the reinforcing pull rod 5 includes a pull rod base plate 5a and a pull rod body 5b, which are connected and fixed to each other, and may be in a split structure or integrally formed. A hinge hole 5c is arranged on the pull rod base plate 5a and is used for being hinged with the side wall of the last-stage foot guard plate 1 c; a positioning groove 5e is formed in the side wall of one end, far away from the pull rod base plate 5a, of the pull rod body 5b, a sliding pin 4 is connected to the spring pin connecting hole 3b of the rotating seat 3, and a spring (not shown in the figure) for driving the sliding pin 4 to be clamped into the positioning groove 5e and keeping the reinforcing pull rod 5 in an extended state is arranged. And a limiting pin hole 5d is further formed in the side wall, between the end part of the pull rod body 5b, which is far away from the pull rod substrate 5a, and the positioning groove 5e, and is used for connecting a limiting piece.
As shown in fig. 12, the reinforcing pull rod 5 and the rotating seat 3 are arranged at two opposite sides of the foot protection plate. A fixing bracket 24 for mounting the rotation seat 3 is connected below the sill bracket 8. In order to realize the rotation of the rotating seat 3, the bottom of the fixed bracket 24 is connected with L-shaped bending plates 22 at two sides of the foot guard, the bending plates 22 are provided with a vertical surface and a horizontal surface, the horizontal surface is fixedly connected with the fixed bracket 24, the vertical surface is provided with a through hole matched with the rod part 3e, the rod part 3e of the rotating seat 3 is inserted into the through hole, the head part 3e is clamped at one side of the vertical surface through a positioning step part 3h, the part of the rod part 3e penetrating through the through hole on the vertical surface belongs to a smooth surface 3f, and the length of the smooth surface 3f is not less than the wall thickness of the vertical surface, namely the depth of the through hole; the screw surface 3g is located at a portion of the rod portion 3e penetrating the vertical surface, and the rotating seat 3 is mounted on the bending plate 22 by connecting a nut to the screw surface 3g at the other side of the vertical surface. In order to facilitate the rotation of the rotary seat 3, the nut cannot be screwed, and therefore, a cotter hole 3c is provided in the end side wall of the rod portion 3e remote from the head portion 3e for inserting a cotter pin to prevent the loosening of the nut from causing the rotary seat 3 to fall off from the bending plate 22. The tie rod base plate 5a of the reinforcing tie rod 5 is hinged with the corresponding side wall of the final-stage toe guard plate 1c through a hinge bolt 25 inserted into the hinge hole 5c, and the hinge bolt 25 is a half-thread bolt in the embodiment; the pull rod body 5b is arranged in the pull rod sliding hole 3a of the rotating seat 3 on the corresponding side in a sliding way; the sliding pin 4 and the spring are made into a spring pin with external threads, the spring pin is screwed into a spring pin connecting hole 3b with internal threads and is connected and fixed, one end of the sliding pin 4 is abutted against the reinforcing pull rod 5, and the spring is in a compressed state at the moment; a bayonet lock is inserted into the limit pin hole 5d to prevent the reinforcing pull rod 5 from accidentally sliding out of the rotating seat 3. A return link 23 is connected between the two sliding pins 4 on both sides of the toe guard, which return link 23 is a return cord in this embodiment.
As shown in fig. 4 and 12, when the leg plates at each stage are in a folded state, the pull rod base plate 5a is kept horizontal, and as the leg plates at each stage are unfolded, the reinforcing pull rod 5 slides relative to the rotating seat 3 until the positioning groove 5e on the reinforcing pull rod 5 just moves to a position corresponding to the sliding pin 4, the spring drives the sliding pin 4 to be clamped into the positioning groove, the reinforcing pull rod 5 does not slide relative to the rotating seat 3 any more, and the function of propping against the leg plates at the last stage 1c is achieved. When the locking of the sliding pin 4 and the positioning groove is required to be released, the reset connecting piece 23 is pulled downwards, so that the sliding pin 4 at two ends can be pulled to move relatively, and is moved out of the positioning groove, the reinforcing pull rod 5 is enabled to resume sliding, the sliding pin 4 is enabled to resume a state of abutting on the reinforcing pull rod 5, and then the foot guard can be manually folded to a folded state.
As shown in fig. 1, 2a, 2b, 3, 4 and 5, an overhaul response switch for detecting whether the toe guard is in a folded state is arranged between the sill bracket 8 and the toe guard 1c, and the overhaul response switch includes: a trigger plate 2 arranged at the bottom of the sill bracket 8, and a trigger roller 6 arranged at the side of the final-stage toe guard 1 c. When the trigger plate 2 contacts the trigger roller 6, the toe guard is folded into place. If the foot protection plates of all levels are not folded in place, namely the maintenance response switch is not triggered, the elevator is forced to enter a maintenance state.
As shown in fig. 1, an anti-collision limiting device which is matched with each other is arranged between the bottom of the last-stage foot guard plate 1c and the pit. The limit switch 7 is installed in the pit, the bottom of last stage toe guard 1c buckles and forms the striking board 15 that aligns with limit switch 7 in the direction of height, and limit switch 7 and striking board 15 constitute anticollision stop device, when the incomplete folding toe guard will touch the ground, strike board 15 triggers limit switch 7, prevents the elevator and descends, prevents that last stage toe guard 1c from directly striking the pit ground and making the toe guard device damage.
When the elevator normally operates, the elastic piece pushes the telescopic pin 11 to enter the lock hole 9a by means of self elasticity, the foot protection plates at all levels are kept in a folded state, when unlocking is needed, the lock core 16 is rotated by stirring through a key, the telescopic pin 11 is driven to retract by the lock release transmission piece 13 so as to be separated from the lock hole 9a, and the foot protection plates at all levels are unfolded by means of self gravity.
Modifications and variations of the above embodiments will be apparent to those skilled in the art in light of the above teachings. Therefore, the invention is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the invention should be also included in the scope of the claims of the invention. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present invention in any way.
Claims (7)
1. A height-adjustable toe guard apparatus comprising: the foot protection device is characterized by also comprising a reinforcing pull rod for keeping the foot protection plate in an unfolding state, wherein one end of the reinforcing pull rod is connected with the foot protection plate at the bottommost end along the gravity direction, and the other end of the reinforcing pull rod is connected with the car bottom or the sill;
a rotating seat is arranged on the car bottom or the sill, one end of the reinforcing pull rod is hinged with the connected foot protection plate, and the other end of the reinforcing pull rod is slidably positioned and penetrated on the rotating seat;
the reinforcing pull rod is in an extending state suitable for the expansion of the foot protection plates at all levels, a positioning groove is formed in the side wall of the reinforcing pull rod, a sliding pin is arranged on the rotating seat, and a spring for driving the sliding pin to be clamped into the positioning groove to keep the reinforcing pull rod in the extending state;
be equipped with the lockhole on the toe guard that is located the lower extreme along the gravity direction, locking means includes:
a rotary lock core fixed on the sill;
a telescopic pin slidably mounted on the sill;
the lock release transmission piece is connected between the telescopic pin and the rotary lock cylinder;
and the elastic piece drives the telescopic pin to enter the lock hole.
2. The foot guard device with adjustable height as claimed in claim 1, wherein the reinforcing pull rod and the rotating seat penetrating through the reinforcing pull rod are provided with two sets of rotating seats, the two sets of rotating seats are oppositely arranged at two sides of the foot guard, a reset connecting piece is connected between sliding pins on the two rotating seats, the sliding pins at two ends can be pulled to move relatively, and the reinforcing pull rod moves out of the positioning groove, so that the reinforcing pull rod can restore to slide in the rotating seats.
3. The height-adjustable toe guard apparatus as claimed in claim 1, wherein the toe guard at the lower end in the direction of gravity is provided with a link member for driving the upper toe guard to a folded state in the adjacent two-stage toe guard in cooperation with each other by sliding guide members provided at opposite sides.
4. The foot guard device with adjustable height as claimed in claim 1, wherein the sill is provided with a mounting seat, the telescopic pin is slidably disposed in the mounting seat, the mounting seat is provided with a strip-shaped guide hole, the telescopic pin is connected with a lock plate extending out of the guide hole along the radial direction, the lock release transmission member is connected with the telescopic pin through the lock plate, one end of the lock release transmission member penetrates through the lock plate, and a return spring is pressed between the end and the lock plate.
5. The height-adjustable toe guard apparatus as claimed in claim 1 or 4, wherein the lock release transmission member is a transmission rod or a pull rope, a guide plate is provided on the sill, and a limit guide hole through which the lock release transmission member passes is provided on the guide plate.
6. The height-adjustable toe guard device as claimed in claim 1 or 4, wherein the number of the locking holes is two, the two telescopic pins are located on two opposite sides of the toe guard in the gravity direction, the two telescopic pins are respectively matched with the locking holes on the corresponding sides, and the two telescopic pins are connected to the same rotary lock cylinder through the respective matched release transmission pieces.
7. The height-adjustable toe guard apparatus as claimed in claim 1, wherein a maintenance response switch for detecting whether the toe guard is in a folded state is provided between the sill and the toe guard at the lowermost end in the gravity direction in cooperation with each other; an anti-collision limiting device which is matched with each other is arranged between the bottom of the foot guard plate at the lowest end along the gravity direction and the pit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721499484 | 2017-11-09 | ||
| CN2017214994844 | 2017-11-09 |
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| CN108373093A CN108373093A (en) | 2018-08-07 |
| CN108373093B true CN108373093B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820361225.3U Active CN208150738U (en) | 2017-11-09 | 2018-03-16 | A kind of height-adjustable foot protecting plate device |
| CN201810219058.3A Active CN108373093B (en) | 2017-11-09 | 2018-03-16 | Foot guard device with adjustable height |
| CN201820398059.4U Active CN208150757U (en) | 2017-11-09 | 2018-03-23 | A kind of foot protecting plate device of reinforcing |
| CN201810243195.0A Active CN108394799B (en) | 2017-11-09 | 2018-03-23 | Reinforced foot guard device |
| CN201821598254.8U Active CN209835376U (en) | 2017-11-09 | 2018-09-28 | Height-adjustable foot protection plate device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820361225.3U Active CN208150738U (en) | 2017-11-09 | 2018-03-16 | A kind of height-adjustable foot protecting plate device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820398059.4U Active CN208150757U (en) | 2017-11-09 | 2018-03-23 | A kind of foot protecting plate device of reinforcing |
| CN201810243195.0A Active CN108394799B (en) | 2017-11-09 | 2018-03-23 | Reinforced foot guard device |
| CN201821598254.8U Active CN209835376U (en) | 2017-11-09 | 2018-09-28 | Height-adjustable foot protection plate device |
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| CN (5) | CN208150738U (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208150738U (en) * | 2017-11-09 | 2018-11-27 | 浙江西子重工机械有限公司 | A kind of height-adjustable foot protecting plate device |
| CN109368463A (en) * | 2018-11-27 | 2019-02-22 | 苏州新达电扶梯部件有限公司 | A kind of three folding toeguard of elevator car bottom |
| CN110498325B (en) * | 2019-08-23 | 2024-06-21 | 三洋电梯(珠海)有限公司 | Telescopic foot protection plate |
| CN110680122B (en) * | 2019-10-11 | 2020-09-29 | 林云飞 | Device capable of automatically sliding out to display printing and dyeing cloth |
| CN115123900B (en) * | 2022-06-07 | 2023-11-24 | 沃捷电梯(江苏)有限公司 | Intelligent foldable car foot protection plate |
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- 2018-03-23 CN CN201820398059.4U patent/CN208150757U/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108373093A (en) | 2018-08-07 |
| CN209835376U (en) | 2019-12-24 |
| CN208150738U (en) | 2018-11-27 |
| CN108394799A (en) | 2018-08-14 |
| CN108394799B (en) | 2023-11-21 |
| CN208150757U (en) | 2018-11-27 |
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Effective date of registration: 20210507 Address after: Room 305-w, 3rd floor, 11 Lane 1888, Caoyang Road, Putuo District, Shanghai 200062 Applicant after: Xin Xi'ao Elevator Group Co.,Ltd. Address before: No.46, Qichao Road, Chang'an Town (Nongfa District), Haining City, Jiaxing City, Zhejiang Province Applicant before: ZHEJIANG XIZI HEAVY INDUSTRY MACHINERY Co.,Ltd. |
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Effective date of registration: 20240118 Address after: No. 1181, Bin'an Road, Binjiang District, Hangzhou City, Zhejiang Province Applicant after: HANGZHOU OPTIMAX TECHNOLOGY Co.,Ltd. Address before: Room 305-w, 3rd floor, 11 Lane 1888, Caoyang Road, Putuo District, Shanghai 200062 Applicant before: Xin Xi'ao Elevator Group Co.,Ltd. |
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