CN216072590U - Automatic flexible sedan-chair top guardrail device - Google Patents
Automatic flexible sedan-chair top guardrail device Download PDFInfo
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- CN216072590U CN216072590U CN202121580651.4U CN202121580651U CN216072590U CN 216072590 U CN216072590 U CN 216072590U CN 202121580651 U CN202121580651 U CN 202121580651U CN 216072590 U CN216072590 U CN 216072590U
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- guardrail
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- safety switch
- car top
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Abstract
The utility model discloses an automatic telescopic car top guardrail device, which comprises fixed guardrails (1) positioned on three sides of a car top and movable guardrails (2) positioned above the fixed guardrails (1), wherein an electric push rod (3) is also fixedly arranged on the car top, a fixed section of the electric push rod (3) is connected with the fixed guardrails (1), and a movable rod of the electric push rod (3) is connected with the movable guardrails (2); the fixed guardrail (1) is provided with a first safety switch (41) and a second safety switch (42), and the movable guardrail (2) is provided with a switch beating plate (43) corresponding to the first safety switch (41) and a collision bow (44) corresponding to the second safety switch (42). The utility model has the characteristics of simple structure, automatic control operation, safety and reliability.
Description
Technical Field
The utility model relates to a car top guardrail, in particular to an automatic telescopic car top guardrail device.
Background
The car top guardrail is used for protecting the periphery of the elevator car top, and is mainly used for ensuring the safety of maintenance or other operations of workers on the elevator car top and avoiding the workers from falling accidentally, so that the car top guardrail needs to be lifted to a safe height during elevator maintenance so as to better protect the workers; and when the elevator normally operates, in order to guarantee the effective utilization of the elevator well, the car top guardrail is prevented from interfering the top of the well, and the car top guardrail needs to be reduced. The telescopic sedan-chair top guardrail that generally has adopted the connection locking mode of buckle usually, and the structure is complicated, needs artifical manual operation to operate, because sedan-chair top guardrail radical is more, and manual adjustment one by one is handled not only relatively more troublesome, wastes time and energy, but also has certain danger. Therefore, the existing telescopic car top guardrail has the problems of complex structure, time and labor waste and low safety.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an automatic telescopic car top guardrail device. The utility model has the characteristics of simple structure, automatic control operation, safety and reliability.
The technical scheme of the utility model is as follows: an automatic telescopic car top guardrail device comprises fixed guardrails positioned on three sides of a car top and movable guardrails positioned above the fixed guardrails, wherein an electric push rod is fixedly arranged on the car top, a fixed section of the electric push rod is connected with the fixed guardrails, and a movable rod of the electric push rod is connected with the movable guardrails; the fixed guardrail is provided with a first safety switch and a second safety switch, the movable guardrail is provided with a switch beating plate corresponding to the first safety switch and a collision bow corresponding to the second safety switch, when the movable guardrail reaches the lowest position, the switch beating plate triggers the first safety switch, and when the movable guardrail reaches the highest position, the collision bow is separated from the second safety switch.
In the automatic telescopic car top guardrail device, the fixed guardrail comprises the side cross beam and the rear cross beam, the side cross beam is connected with the fixed section of the electric push rod, the movable guardrail comprises the side handrail and the rear handrail, the side handrail is connected with the movable rod of the electric push rod, the two ends of the rear cross beam and the two ends of the rear handrail are respectively provided with the connecting elongated slot, the connecting elongated slots are internally provided with the connecting bolts, the rear cross beam is connected with the side cross beam through the connecting bolts, and the rear handrail is connected with the side handrail through the connecting bolts.
In the automatic telescopic car top guardrail device, the side handrails are provided with the notches, the notches are connected with the avoidance rods through the bending plates, and the side handrails, the bending plates and the avoidance rods form U-shaped avoidance grooves.
In the automatic flexible sedan-chair top guardrail device, hit the bow and include the vertical board of being connected with movable guardrail, the lower extreme of vertical board is equipped with the hang plate that leans out, and when vertical board and second safety switch position correspond, vertical board and second safety switch contact, when the hang plate corresponds with the second safety switch position, the hang plate is contactless with second safety switch.
In the car top guardrail device capable of automatically stretching and retracting, the electric push rod is connected with a direct current power supply in the car top maintenance box.
In the automatic flexible sedan-chair top guardrail device, be equipped with the stiffener between movable guardrail and the fixed guardrail, movable guardrail's bottom is equipped with the fluting that supplies the stiffener to hide, is equipped with the shock pad in the fluting, and the upper end of stiffener is rotated with movable guardrail through the pivot that has the torsional spring and is connected, and the lower extreme of stiffener is equipped with the elasticity fixture block, and fixed guardrail's top is equipped with the mount pad of U-shaped, and the U type groove of mount pad supplies the stiffener embedding, and the side of mount pad is equipped with the draw-in groove with elasticity fixture block cooperation joint.
Compared with the prior art, the movable guardrail is automatically lifted and lowered through the electric push rod, the protection requirements of an overhaul state and a normal state are met, the direct-current power supply in the car top overhaul box is adopted to supply power to the electric push rod, an additional power supply device is not required to be added, the safety voltage is adopted, the whole device is simple in structure, automatically controls operation, is safe and reliable, can meet the requirement of a short top station of an elevator, and is particularly suitable for being additionally provided with the elevator in an old building; in addition, set up first safety switch and second safety switch on the sedan-chair top guardrail and trigger spacingly, improve the lift security of sedan-chair top guardrail, and first safety switch and second safety switch's the form of triggering can not cause great injury to first safety switch and second safety switch, guarantee first safety switch and second safety switch's life.
Therefore, the utility model has the characteristics of simple structure, automatic control operation, safety and reliability.
Drawings
FIG. 1 is a schematic structural view of the present invention in a maintenance operating state;
FIG. 2 is an enlarged view of a portion of the structure at A in FIG. 1;
FIG. 3 is a schematic structural view of the present invention in a normal operation state;
FIG. 4 is a schematic view showing a connection structure of the reinforcing bar in the maintenance operation state;
fig. 5 is an enlarged view of a portion of the structure at B in fig. 4.
The labels in the figures are: 1. fixing the guard bar; 11. a side cross member; 12. a rear cross member; 2. a movable guardrail; 21. a side arm rest; 22. a rear armrest; 23. a long connecting groove; 24. a connecting bolt; 25. a bending plate; 26. an avoidance rod; 27. an avoidance groove; 28. grooving; 281. a shock pad; 3. an electric push rod; 41. a first safety switch; 42. a second safety switch; 43. a switch beating plate; 44. knocking the bow; 441. a vertical plate; 442. an inclined plate; 5. a reinforcing bar; 51. an elastic clamping block; 6. a mounting seat; 61. a clamping groove.
Detailed Description
The utility model is further illustrated by the following figures and examples, which are not to be construed as limiting the utility model.
Example (b):
as shown in fig. 1-3, an automatic telescopic car top guard device comprises fixed guardrails 1 positioned on three sides of a car top and movable guardrails 2 positioned above the fixed guardrails 1, wherein an electric push rod 3 is fixedly installed on the car top, a fixed section of the electric push rod 3 is connected with the fixed guardrails 1, and a movable rod of the electric push rod 3 is connected with the movable guardrails 2; the fixed guardrail 1 is provided with a first safety switch 41 and a second safety switch 42, the movable guardrail 2 is provided with a switch beating plate 43 corresponding to the first safety switch 41 and a collision bow 44 corresponding to the second safety switch 42, when the movable guardrail 2 reaches the lowest position, the switch beating plate 43 triggers the first safety switch 41, and when the movable guardrail 2 reaches the highest position, the collision bow 44 is separated from the second safety switch 42.
The fixed guardrail 1 comprises a side beam 11 and a rear beam 12, the side beam 11 is connected with a fixed section of the electric push rod 3, the movable guardrail 2 comprises a side handrail 21 and a rear handrail 22, the side handrail 21 is connected with a movable rod of the electric push rod 3, two ends of the rear beam 12 and the rear handrail 22 are respectively provided with a connecting elongated slot 23, a connecting bolt 24 is arranged in the connecting elongated slot 23, the rear beam 12 is connected with the side beam 11 through the connecting bolt 24, and the rear handrail 22 is connected with the side handrail 21 through the connecting bolt 24. Fixed guardrail 1 and movable guardrail 2 are detachable structure, can carry out the adjustment of position and size, and application scope is wide, the maintenance of being convenient for is changed.
According to the requirement, a notch can be arranged on the side handrail 21, the notch is connected with an avoidance rod 26 through the bending plate 25, and a U-shaped avoidance groove 27 is formed among the side handrail 21, the bending plate 25 and the avoidance rod 26 to avoid the steel wire rope and the rope clamp.
The striking bow 44 includes a vertical plate 441 connected to the movable fence 2, a lower end of the vertical plate 441 is provided with an inclined plate 442 inclined outward, the vertical plate 441 is in contact with the second safety switch 42 when the vertical plate 441 corresponds to the second safety switch 42, and the inclined plate 442 is not in contact with the second safety switch 42 when the inclined plate 442 corresponds to the second safety switch 42.
And the electric push rod 3 is connected with a direct-current power supply in the car top maintenance box. Direct current power supply in the sedan-chair top service box is the power supply of electric putter 3, need not to increase extra power supply unit, adopts safe voltage, guarantees safety, and electric putter 3 self has terminal protection switch and thermal protection switch, forms redundant protection to whole system.
As shown in fig. 4-5, a reinforcing rod 5 is disposed between the movable guardrail 2 and the fixed guardrail 1, a slot 28 for hiding the reinforcing rod 5 is disposed at the bottom of the movable guardrail 2, a shock pad 281 is disposed in the slot 28, the upper end of the reinforcing rod 5 is rotatably connected to the movable guardrail 2 through a rotating shaft with a torsion spring, the torsion spring is sleeved on the rotating shaft, one end of the torsion spring is fixed to the rotating shaft, and the other end of the torsion spring is fixed to the movable guardrail 2. The lower extreme of stiffener 5 is equipped with elasticity fixture block 51, and the top of fixed guardrail 1 is equipped with the mount pad 6 of U-shaped, and the U type groove of mount pad 6 supplies the embedding of stiffener 5, and the side of mount pad 6 is equipped with the draw-in groove 61 with elasticity fixture block 51 cooperation joint.
The working principle is as follows:
(1) when the elevator enters a maintenance state, the electric push rod 3 is started, the movable rod of the electric push rod 3 drives the movable guardrail 2 to integrally move upwards, the switch beating plate 43 is separated from the contact with the first safety switch 41 in the upward process of the movable guardrail 2, the first safety switch 41 resets, and the impact bow 44 is always in contact with the second safety switch 42 to continuously trigger the second safety switch 42; when the movable guardrail 2 reaches the highest position (height required by national standard), the impact bow 44 is separated from the second safety switch 42, the second safety switch 42 is reset, the maintenance operation loop is switched on, the normal operation loop of the elevator is switched off, and the elevator can be maintained and operated and cannot be normally operated; at this moment, the reinforcing rod 5 rotates downwards by taking the rotating shaft as a rotating center, so that the lower end of the reinforcing rod 5 is embedded into the mounting seat 6 and is connected and fixed with the clamping groove 61 through the elastic clamping block 51, the protection density of the car top guardrail is increased, and the protection strength of the car top guardrail is improved.
(2) When the elevator returns to a normal state, the elastic fixture block 51 on the reinforcing rod 5 is pressed first, the reinforcing rod 5 automatically returns to the groove 28 under the action of the torsion spring, and noise and vibration are reduced under the protection action of the shock pad 281; then starting the electric push rod 3, driving the movable guardrail 2 to integrally move downwards by the movable rod of the electric push rod 3, wherein in the downward process of the movable guardrail 2, the impact bow 44 is always in contact with the second safety switch 42 to continuously trigger the second safety switch 42, when the movable guardrail 2 reaches the minimum required height, the switch striking plate 43 is in contact with the first safety switch 41 to trigger the first safety switch 41, the normal operation loop is switched on, the maintenance operation loop is switched off, and the elevator can normally operate and cannot be maintained.
(3) When the movable guardrail is in the up-and-down moving process, the elevator can not be overhauled and can not be normally used.
The present invention is not described in detail in the prior art and is not specifically described herein.
Claims (6)
1. The utility model provides an automatic flexible sedan-chair top guardrail device which characterized in that: the safety protection device comprises fixed guardrails (1) positioned on three sides of a car top and movable guardrails (2) positioned above the fixed guardrails (1), wherein electric push rods (3) are fixedly arranged on the car top, fixed sections of the electric push rods (3) are connected with the fixed guardrails (1), and movable rods of the electric push rods (3) are connected with the movable guardrails (2); the safety protection device is characterized in that a first safety switch (41) and a second safety switch (42) are arranged on the fixed guardrail (1), a switch striking plate (43) corresponding to the first safety switch (41) and a striking bow (44) corresponding to the second safety switch (42) are arranged on the movable guardrail (2), when the movable guardrail (2) reaches the lowest position, the switch striking plate (43) triggers the first safety switch (41), and when the movable guardrail (2) reaches the highest position, the striking bow (44) is separated from the second safety switch (42).
2. The automatic telescoping car top guardrail apparatus of claim 1 wherein: fixed guardrail (1) is including side crossbeam (11) and rear frame member (12), side crossbeam (11) are connected with the canned paragraph of electric putter (3), movable guardrail (2) are including side handrail (21) and back handrail (22), side handrail (21) are connected with the movable rod of electric putter (3), the both ends of rear frame member (12) and back handrail (22) all are equipped with connects elongated slot (23), be equipped with connecting bolt (24) in connecting elongated slot (23), rear frame member (12) are connected with side crossbeam (11) through connecting bolt (24), back handrail (22) are connected with side handrail (21) through connecting bolt (24).
3. The automatic telescoping car top guardrail apparatus of claim 2 wherein: be equipped with the breach on side handrail (21), breach department is connected with through bent plate (25) and dodges pole (26), and side handrail (21), bent plate (25) and dodge and form U-shaped groove (27) of dodging between pole (26).
4. The automatic telescoping car top guardrail apparatus of claim 1 wherein: the collision bow (44) comprises a vertical plate (441) connected with the movable guardrail (2), the lower end of the vertical plate (441) is provided with an inclined plate (442) inclining outwards, when the vertical plate (441) corresponds to the second safety switch (42), the vertical plate (441) contacts with the second safety switch (42), and when the inclined plate (442) corresponds to the second safety switch (42), the inclined plate (442) does not contact with the second safety switch (42).
5. The automatic telescoping car top guardrail apparatus of claim 1 wherein: and the electric push rod (3) is connected with a direct current power supply in the car top maintenance box.
6. The automatic telescoping car top guardrail apparatus of claim 1 wherein: be equipped with between movable guardrail (2) and fixed guardrail (1) stiffener (5), the bottom of movable guardrail (2) is equipped with fluting (28) that supplies stiffener (5) to hide, be equipped with shock pad (281) in fluting (28), the upper end of stiffener (5) is rotated with movable guardrail (2) through the pivot that has the torsional spring and is connected, the lower extreme of stiffener (5) is equipped with elasticity fixture block (51), the top of fixed guardrail (1) is equipped with mount pad (6) of U-shaped, the U type groove of mount pad (6) supplies stiffener (5) embedding, the side of mount pad (6) is equipped with draw-in groove (61) with elasticity fixture block (51) cooperation joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121580651.4U CN216072590U (en) | 2021-07-13 | 2021-07-13 | Automatic flexible sedan-chair top guardrail device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121580651.4U CN216072590U (en) | 2021-07-13 | 2021-07-13 | Automatic flexible sedan-chair top guardrail device |
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| Publication Number | Publication Date |
|---|---|
| CN216072590U true CN216072590U (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121580651.4U Active CN216072590U (en) | 2021-07-13 | 2021-07-13 | Automatic flexible sedan-chair top guardrail device |
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| CN (1) | CN216072590U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113415688A (en) * | 2021-07-13 | 2021-09-21 | 怡达快速电梯有限公司 | Automatic telescopic car roof guardrail |
-
2021
- 2021-07-13 CN CN202121580651.4U patent/CN216072590U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113415688A (en) * | 2021-07-13 | 2021-09-21 | 怡达快速电梯有限公司 | Automatic telescopic car roof guardrail |
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