CN211496534U - Toe guard device for lift car - Google Patents
Toe guard device for lift car Download PDFInfo
- Publication number
- CN211496534U CN211496534U CN201922009025.9U CN201922009025U CN211496534U CN 211496534 U CN211496534 U CN 211496534U CN 201922009025 U CN201922009025 U CN 201922009025U CN 211496534 U CN211496534 U CN 211496534U
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- Prior art keywords
- toe guard
- car
- movable
- sliding
- fixed
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Abstract
The utility model discloses a car toe guard device, including fixed toe guard and with fixed toe guard sliding connection's activity toe guard, activity toe guard bottom is equipped with first magnetic sheet, and the position that lies in activity toe guard below in the pit is equipped with the second magnetic sheet corresponding with first magnetic sheet, first magnetic sheet and second magnetic sheet homopolar relative setting. The utility model provides a car toe guard device, simple structure, intensity is high, can realize automatic flexible function, and flexible process slides smoothly, and difficult card is dun, is applicable to shallow pit elevator well.
Description
Technical Field
The utility model relates to an elevator technical field, concretely relates to car toe guard device.
Background
The elevator car toe guard is installed in the below of car sill for receive the injury of shearing force after preventing maintainer or passenger mistake to get into the well, the vertical height of car toe guard is the important factor of guaranteeing personnel's safety, requires in national standard GB7588-2003 that the vertical height of car toe guard is not less than 750 mm. The traditional car toe guard is generally fixed at the bottom of the car sill and is installed in a fixed and immovable manner. In practical use, especially when being applied to the additional installation of an elevator, the traditional car toe guard is easy to interfere with a pit after entering the pit. Because when installing the elevator additional to old building, the elevator pit depth is because of facilities such as ground bottom pipeline are limited, generally adopts shallow bottom pit shaft structure, consequently can't hold traditional car toe guard.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that prior art exists, the utility model provides a car toe guard device, simple structure, intensity is high, can realize automatic flexible function, and flexible process slides smoothly, and difficult card is dunked, is applicable to shallow pit elevator well.
The utility model discloses a following technical scheme realizes: the utility model provides a car toe guard device, including fixed toe guard and with fixed toe guard sliding connection's activity toe guard, activity toe guard bottom is equipped with first magnetic sheet, and the position that lies in activity toe guard below in the pit is equipped with the second magnetic sheet corresponding with first magnetic sheet, first magnetic sheet and second magnetic sheet homopolar relative setting.
In the process that the elevator car descends to a pit flat layer, a first magnetic plate arranged at the bottom of a movable toe guard is subjected to repulsive force of a second magnetic plate positioned in the pit, so that the movable toe guard is pushed to slide and ascend relative to a fixed toe guard, and the contraction of the car toe guard device is realized; in the process that the elevator car moves upwards from the flat layer of the pit, along with the increase of the distance between the two magnetic plates, the repulsive force between the two magnetic plates is gradually reduced, and under the action of gravity, the movable toe guard slides and descends relative to the fixed toe guard, so that the extension of the car toe guard device is realized.
Further, the method also comprises the following steps: the rack is fixedly arranged on two sides of the fixed toe guard or the movable toe guard, and the corresponding gear is rotatably arranged on the movable toe guard or the fixed toe guard; the gear is installed and rotates in step on same pivot, and the purpose that car toe guard device both sides set up three drive disk assembly of rack, gear and pivot is in order to keep the activity toe guard both sides to keep synchronous lift in the in-process that slides from top to bottom, avoids the activity toe guard to appear unbalance loading or card dead in the slip in-process.
Furthermore, shaft sleeves are fixed on two sides of the foot protection plate provided with the gears, the rotating shaft is rotatably arranged on the foot protection plate through the two shaft sleeves, stress on two sides of the rotating shaft is uniform, and synchronous rotation of two sides of the rotating shaft can be realized.
Furthermore, the rotating shaft and the gear are in key connection, so that the gear is prevented from freely rotating, and synchronous rotation of the gear and the rotating shaft is realized.
Furthermore, sliding sleeves are arranged on two sides of the fixed toe guard, sliding grooves extending along the length direction of the sliding sleeves are formed in the sliding sleeves, and sliding blocks matched with the sliding grooves are arranged on two sides of the movable toe guard so that the movable toe guard can slide up and down in a telescopic mode relative to the fixed toe guard.
Furthermore, the sliding sleeve is provided with positioning grooves which are arranged along the length direction of the sliding sleeve and are provided with end sockets at two ends, the tops of two sides of the movable foot protection plate are fixedly provided with stop rods, and the end parts of the stop rods are clamped into the positioning grooves and slide along with the up-and-down sliding of the movable foot protection plate so as to keep the expansion state of the movable foot protection plate and limit the excessive contraction of the movable foot protection plate.
Furthermore, fixed toeguard both sides and activity toeguard both sides all are equipped with the board of bending, sliding sleeve and slider set up respectively on corresponding toeguard board of bending, can reduce the deformation of car toeguard device both sides when receiving external force.
Furthermore, the sliding groove is a dovetail groove or a T-shaped groove, so that the sliding block can be ensured to slide smoothly in the sliding groove, and is not easy to derail and strong in stability.
Furthermore, a safety detection switch for detecting whether the movable toe guard is in an unfolded state or not is arranged at the bottom of one side of the fixed toe guard.
The utility model provides a car toe guard device has following beneficial effect: the automatic stretching of car toe guard device can be realized when elevator car discrepancy pit flat bed, need not electrical equipment, and is with low costs, and stability is good, not only accords with the basic requirement of elevator car toe guard, has still satisfied the shallow pit requirement, avoids striking the pit and causes the damage to car toe guard device.
Drawings
Fig. 1 is a schematic structural view of the car toe guard device of the present invention when deployed;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is an enlarged view of FIG. 1 at B;
fig. 4 is a schematic structural view of the car toe guard device of the present invention when retracted;
FIG. 5 is an enlarged view at C of FIG. 4;
FIG. 6 is an enlarged view of FIG. 4 at D;
fig. 7 is a schematic view of a part of the structure of the car toe guard device when the stop rod and the safety detection switch contact arm act (the sliding sleeve and the rack structure are omitted).
In the figure: 1. fixing a toe guard; 1a, bending a plate; 2. a movable toe guard; 2a, bending a plate; 3. a rotating shaft; 4. a first magnetic plate; 5. a second magnetic plate; 6. a sliding sleeve; 6a, a chute; 6b, positioning grooves; 7. a safety detection switch; 7a, a safety detection switch contact arm; 8. a rack; 9. a slider; 10. a stopper rod; 11. a gear; 12. and a shaft sleeve.
Detailed Description
The following further describes a specific embodiment of the car toe guard device of the present invention with reference to the accompanying drawings.
As shown in fig. 1-6, a car toe guard device comprises a fixed toe guard 1 and a movable toe guard 2 slidably connected with the fixed toe guard 1, wherein a first magnetic plate 4 is arranged at the bottom of the movable toe guard 2, a second magnetic plate 5 corresponding to the first magnetic plate 4 is arranged in a pit below the movable toe guard 2, the first magnetic plate 4 and the second magnetic plate 5 are arranged in a homopolar and opposite manner, and the movable toe guard 2 can slide and lift relative to the fixed toe guard 1 under the action of magnetic force with homopolar repulsion.
As shown in fig. 2, 3, 5 and 6, fixed toe guard 1 both sides and activity toe guard 2 both sides in this embodiment all are equipped with the board of bending, can reduce the deformation of car toe guard device both sides when receiving external force, and fixed toe guard 1 cover is established in the activity toe guard 2 outside, and the inner wall of fixed toe guard two bending board 1a is fixed with rectangular form sliding sleeve 6, is equipped with in the sliding sleeve 6 along the spout 6a of its length direction extension, and sliding sleeve 6 passes through the mounting hole in the spout 6a and is connected fixedly with fixed toe guard bending board 1 a.
The outer walls of the two bending plates 2a of the movable foot protection plate are respectively provided with a strip-shaped rack 8, and the side surface of the rack 8 opposite to the sliding groove 6a is fixedly provided with a sliding block 9 matched with the sliding groove 6a so as to realize the smooth sliding of the movable foot protection plate 2. The sliding sleeve 6 and the sliding block 9 can also enhance the side strength of the fixed toe guard 1 and the movable toe guard 2, and effectively prevent the side surfaces of the two toe guards from deforming due to external impact. The sliding groove 6a in the embodiment is a dovetail groove, so that the sliding block 9 can be ensured to slide smoothly in the sliding groove 6a, the sliding block is not easy to derail, the stability is high, and a T-shaped groove can be adopted.
The bottom of the sliding sleeve 6 on two sides of the fixed toe guard 1 is provided with the shaft sleeves 12, the rotating shaft 3 is rotatably arranged on the fixed toe guard 1 through the two shaft sleeves 12, the two ends of the rotating shaft 3 are respectively provided with the gears 11 meshed with the racks 8, the rotating shaft 3 and the gears 11 are connected in a key mode, the gears 11 are prevented from freely rotating, and the gears 11 and the rotating shaft 3 can synchronously rotate. The two sides of the car toe guard device are provided with the rack 8, the gear 11 and the rotating shaft 3, so that the two sides of the movable toe guard 2 can be kept to synchronously lift in the process of sliding up and down, and the movable toe guard 2 is prevented from being unbalanced or blocked in the sliding process. When the movable toe guard 2 slides up and down relative to the fixed toe guard 1, the racks 8 fixed on the two sides of the movable toe guard 2 move up and down to drive the two gears 11 and the rotating shaft 3 to rotate synchronously, so that the two racks 8 are driven to move up and down synchronously to realize the synchronous up and down sliding of the two sides of the movable toe guard 2.
The sliding sleeve 6 is provided with positioning grooves 6b which are arranged along the length direction of the sliding sleeve and are provided with end sockets at two ends, the tops of the two bending plates 2a of the movable foot protection plate are fixedly provided with stop rods 10, the stop rods 10 penetrate through the bending plates 2a of the movable foot protection plate and the rack 8, and the end parts of the stop rods are clamped into the positioning grooves 6b to slide along with the up-and-down sliding of the movable foot protection plate 2.
As shown in fig. 3 and 7, a safety detection switch 7 for detecting whether the car toe guard device is in an unfolded state is provided at the bottom of the bent plate 1a on the side of the fixed toe guard, and a contact arm 7a of the safety detection switch extends into the positioning groove 6b, and when the movable toe guard 2 is completely unfolded relative to the fixed toe guard 1, the operation is triggered by the end of the stopper rod 10.
The positioning groove 6b and the stop rod 10 are arranged to keep the movable toe guard 2 in the unfolded state and limit the movable toe guard 2 from being excessively contracted, and provide space and an action mechanism for triggering the safety detection switch 7.
The working principle of the car toe guard device of the utility model is that the car toe guard device is in a fully expanded state when the elevator car normally moves up and down so as to protect the personal safety of maintainers and passengers; in the process that the elevator car descends to the flat floor of the pit, the movable toe guard 2 slides and ascends relative to the fixed toe guard 1 under the action of repulsion force until the toe guard device of the elevator car is completely folded; in the process of ascending and running of the elevator car from the pit flat layer, the movable toe guard 2 slides and descends relative to the fixed toe guard 1 under the action of gravity until the car toe guard device is completely unfolded. As shown in fig. 1-6:
when the elevator descends and the car toe guard device enters a pit, repulsive force is generated between a first magnetic plate 4 positioned at the bottom of the fixed toe guard 1 and a second magnetic plate 5 oppositely arranged in the pit, the repulsive force between the two magnetic plates is increased along with the descending of the elevator car, the movable toe guard 2 slides and ascends under the action of the repulsive force, the racks 8 fixed on the two sides of the movable toe guard 2 also move upwards to drive the two gears 11 meshed with the racks 8 and the rotating shaft 3 to synchronously rotate, and the sliding blocks 9 on the two sides of the movable toe guard 2 synchronously slide and ascend in the sliding grooves 6a of the fixed toe guard 1. Meanwhile, the stop rods 10 positioned at the tops of the two sides of the movable toe guard 2 slide upwards in the positioning grooves 6b along with the rising of the movable toe guard 2, the end parts of the stop rods 10 are separated from the contact arms 7a of the safety detection switch in the sliding process, at the moment, the elevator enters a pit running mode, and the elevator can still go downwards. The movable toe guard 2 slides and rises relative to the fixed toe guard 1 until the elevator car reaches the pit flat floor and stops descending, the stop rod 10 slides to the upper end socket of the positioning groove 6b to prevent the movable toe guard 2 from excessively contracting, the movable toe guard 2 rises to be overlapped with the fixed toe guard 1, at the moment, the car toe guard device completely contracts, and the height of the whole car toe guard device is the shortest. The movable toe guard 2 can maintain a contracted state with respect to the fixed toe guard 1 without descending due to the continuous action of the pit repulsive force.
When the elevator car starts to move upwards from the flat layer of the pit, the repulsive force between the second magnetic plate 5 positioned in the pit and the first magnetic plate 4 on the movable toe guard gradually decreases along with the increase of the distance between the second magnetic plate and the first magnetic plate, the movable toe guard 2 slides and descends relative to the fixed toe guard 1 under the action of gravity, the racks 8 fixed on the two sides of the movable toe guard 2 also move downwards to drive the two gears 11 meshed with the racks 8 and the rotating shaft 3 to synchronously rotate, and the sliding blocks 9 on the two sides of the movable toe guard 2 synchronously slide and descend in the sliding grooves 6a of the fixed toe guard 1. Meanwhile, the stop rods 10 positioned at the tops of the two sides of the movable toe guard 2 slide downwards in the positioning grooves 6b along with the descending of the movable toe guard 2 until the end parts of the stop rods 10 act with the contact arms 7a of the safety detection switch to connect an elevator safety loop, and at the moment, the elevator enters a normal operation mode and can normally run up and down. At the moment, the stop rod 10 slides to the lower end socket of the positioning groove 6b, the car toe guard device is completely unfolded, and the height of the whole car toe guard device is longest. The elevator continues to move upwards, the end part of the stop rod 10 is clamped at the bottom of the positioning groove 6b, and meanwhile, the movable toe guard 2 is hung at the bottom of the fixed toe guard 1 under the action of gravity, so that the fully unfolded state of the cage toe guard device is maintained.
When the maintenance personnel enters the pit for maintenance when the elevator breaks down, once the elevator accidentally goes downwards to cause the condition that the car toe guard device touches the maintenance personnel, the movable toe guard 2 is jacked up immediately because a certain reaction force is given by the personnel to the movable toe guard 2, meanwhile, the end part of the stop rod 10 is separated from the contact arm 7a of the safety detection switch, the safety loop is disconnected, and the elevator enters a maintenance mode and cannot run up and down. Therefore the utility model discloses car toe guard device can effectively prevent further deepening of incident, reduces the injury to the maintainer.
In addition, rack fixed mounting is on fixed toe guard, and corresponding gear revolve installs do on movable toe guard the utility model discloses another embodiment of car toe guard device, activity toe guard both sides top is fixed with the axle sleeve in this embodiment, passes through the diaxon cover with gear synchronous pivoted pivot and rotates and install on movable toe guard to guarantee that movable toe guard keeps both sides synchronous movement when gliding under the magnetic force effect, avoid appearing unbalance loading or card dead in the slip in-process.
The utility model discloses car toe guard device produces the repulsion force through relative between first magnetic sheet and the second magnetic sheet that sets up and realizes automatic flexible function, need not electrical equipment, and is with low costs. The synchronous lifting of the two sides of the movable toe guard is realized by additionally arranging the rack, the gear and the rotating shaft at the two sides of the car toe guard device, the movable toe guard is prevented from being unbalanced or blocked in the sliding process, and the running stability is improved. The car toe guard device conforms to the regulation of the height of the toe guard in the national standard GB7588-2003 when being completely unfolded, can be placed in a shallow pit when being completely folded, avoids interference with the shallow pit, and is high in safety.
Appropriate changes and modifications to the embodiments described above will become apparent to those skilled in the art from the disclosure and teachings of the foregoing description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (9)
1. The utility model provides a car toe guard device, including fixed toe guard and with fixed toe guard sliding connection's activity toe guard, its characterized in that, activity toe guard bottom is equipped with first magnetic sheet, is located the position of activity toe guard below in the pit and is equipped with the second magnetic sheet corresponding with first magnetic sheet, first magnetic sheet and second magnetic sheet homopolar relative setting.
2. The car toe guard device of claim 1, further comprising: the rack is fixedly arranged on two sides of the fixed toe guard or the movable toe guard, and the corresponding gear is rotatably arranged on the movable toe guard or the fixed toe guard; the gears are arranged on the same rotating shaft to rotate synchronously.
3. The car toe guard device according to claim 2, wherein shaft sleeves are fixed to both sides of the toe guard on which the gear is mounted, and the rotating shaft is rotatably mounted on the toe guard through the two shaft sleeves.
4. The car toe guard device of claim 2, wherein the shaft is keyed to the gear.
5. The car toe guard device of claim 1, wherein sliding sleeves are provided on both sides of the fixed toe guard, sliding grooves extending in a longitudinal direction of the sliding sleeves are provided in the sliding sleeves, and sliding blocks which are engaged with the sliding grooves are provided on both sides of the movable toe guard.
6. The car toe guard device according to claim 5, wherein the sliding sleeve is provided with positioning grooves which are arranged along the length direction of the sliding sleeve and are provided with end sockets at two ends, the tops of two sides of the movable toe guard are fixedly provided with stop rods, and the end parts of the stop rods are clamped into the positioning grooves and slide along with the up-and-down sliding of the movable toe guard.
7. A car toe guard device as claimed in claim 5, wherein the fixed toe guard is provided with a bent plate on both sides thereof and the movable toe guard is provided with a bent plate on both sides thereof, and the sliding sleeve and the sliding block are respectively provided on the corresponding bent plates of the toe guard.
8. A car toe guard arrangement as claimed in claim 5, wherein the runner is a dovetail or T-slot.
9. The car toe guard device according to claim 1, wherein a safety detection switch for detecting whether the movable toe guard is in the extended state is provided at a bottom portion of one side of the fixed toe guard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922009025.9U CN211496534U (en) | 2019-11-19 | 2019-11-19 | Toe guard device for lift car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922009025.9U CN211496534U (en) | 2019-11-19 | 2019-11-19 | Toe guard device for lift car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211496534U true CN211496534U (en) | 2020-09-15 |
Family
ID=72410309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922009025.9U Expired - Fee Related CN211496534U (en) | 2019-11-19 | 2019-11-19 | Toe guard device for lift car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211496534U (en) |
-
2019
- 2019-11-19 CN CN201922009025.9U patent/CN211496534U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210514 Address after: Room 305-w, 3rd floor, No.11 Lane 1888, Caoyang Road, Putuo District, Shanghai 200333 Patentee 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 Patentee before: ZHEJIANG XIZI HEAVY INDUSTRY MACHINERY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200915 Termination date: 20211119 |