CN210735899U - Folding car top guardrail - Google Patents
Folding car top guardrail Download PDFInfo
- Publication number
- CN210735899U CN210735899U CN201921919772.XU CN201921919772U CN210735899U CN 210735899 U CN210735899 U CN 210735899U CN 201921919772 U CN201921919772 U CN 201921919772U CN 210735899 U CN210735899 U CN 210735899U
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- connecting rod
- guardrail
- lower connecting
- nut
- upper connecting
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Abstract
The utility model relates to the field of elevators, in particular to a folding car roof guardrail, which comprises a lateral guardrail and a middle guardrail, wherein the lateral guardrail is symmetrically arranged at the two sides of the middle guardrail; the side guardrail comprises a bottom plate, a top plate, a first lower connecting rod, a second lower connecting rod, a third lower connecting rod, a first upper connecting rod, a second upper connecting rod, a third upper connecting rod and a horizontal connecting rod; the middle guardrail comprises a connecting plate, a middle support, a screw rod, a first nut, a second nut, a motor and a transmission mechanism. The utility model discloses a lower extreme of the first lower connecting rod of foldable sedan-chair top guardrail, second lower connecting rod and the length direction interval pin joint in the bottom plate of lower extreme along the bottom plate of third lower connecting rod, the length direction interval pin joint in the roof of roof is followed to the upper end of connecting rod on the upper end of first upper connecting rod, the second and the third, consequently the utility model discloses a sedan-chair top guardrail folding degree is big, can contract lower height during the elevator operation, can reduce well top layer height in order to reduce construction cost.
Description
Technical Field
The utility model relates to a there is the elevator field, specifically is a foldable sedan-chair top guardrail.
Background
In the elevator industry, a car roof refers to the top of an elevator car, the car roof is a main operation platform for installing and maintaining personnel, in order to ensure the safety of the operating personnel, in the national standard, when the horizontal free distance between the outer edge of a shaft wall and the outer edge of the car roof exceeds 0.30m, a guardrail is required to be installed on the car roof, and when the free distance between the outer edge of a guardrail handrail and the shaft wall is not more than 0.85m, the height of the handrail is not less than 0.70 m; when the free distance is greater than 0.85m, the armrest height is not less than 1.10 m. Under the standard requirement, a plurality of guardrails with the height not less than 1.10m are required to be arranged above the elevator car roof, and in order to reduce the construction cost, the height of the top layer of the shaft needs to be reduced, so that when the elevator runs to the top layer, the space of the top layer of the shaft is insufficient, and the running of the elevator is affected.
CN209210110U discloses an electrodynamic type sedan-chair top guardrail, including fixed guardrail, portable guardrail and electric telescopic handle, this electrodynamic type sedan-chair top guardrail has flexible function, but the electric telescopic handle of vertical setting has led to its flexible degree less, and the guardrail can not contract lower height when the elevator operation, still can influence construction cost.
CN209383213U discloses a novel foldable car top guardrail, including fixed guardrail, folding guardrail etc. because fixed guardrail and car top rigid connection, this car top guardrail still has the less problem of degree of contraction, in addition, this car top guardrail needs to be maintained personnel and manually expand on the car top, not only the operation is complicated, has the potential safety hazard moreover.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the not enough of above-mentioned prior art, provide a foldable sedan-chair top guardrail, folding degree is big, can contract lower height during the elevator operation, can reduce well top layer height in order to reduce construction cost, and easy operation is swift moreover, and the security is high.
The utility model discloses the technical problem that will solve adopts following technical scheme to realize: a foldable car top guardrail comprises side guardrails and a middle guardrail, wherein the side guardrails are symmetrically arranged on two sides of the middle guardrail; the side guardrail comprises a bottom plate, a top plate, a first lower connecting rod, a second lower connecting rod, a third lower connecting rod, a first upper connecting rod, a second upper connecting rod, a third upper connecting rod and a horizontal connecting rod, the first lower connecting rod, the second lower connecting rod, the third lower connecting rod, the first upper connecting rod, the second upper connecting rod and the third upper connecting rod are equal in length, the lower ends of the first lower connecting rod, the second lower connecting rod and the third lower connecting rod are pivoted on the bottom plate at intervals along the length direction of the bottom plate, the upper end of the first upper connecting rod, the upper end of the second upper connecting rod and the upper end of the third upper connecting rod are pivoted on the top plate at intervals along the length direction of the top plate, the upper end of the first lower connecting rod is pivoted with the lower end of the first upper connecting rod, the upper end of the second lower connecting rod and the lower end of the second upper connecting rod are pivoted at the same point of the horizontal connecting rod, the upper end of the third lower connecting rod and the lower end of the third upper connecting rod are pivoted at the same point of the horizontal connecting rod; middle guardrail includes connecting plate, middle support, lead screw, first nut, second nut, motor and drive mechanism, the both ends of connecting plate respectively with two roof fixed connection, the lead screw is equipped with two and the symmetry is installed on middle support, the screw thread of first nut and second nut revolves to opposite and all with lead screw thread fit, the upper end pin joint of first nut and first connecting rod down, the upper end pin joint of second nut and second connecting rod down, the motor is installed on middle support, the motor passes through drive mechanism and two screw connections.
The technical proposal of the utility model is also that: the device also comprises a proximity switch, wherein the proximity switch is arranged on the middle bracket, and the probe of the proximity switch is vertically downward. By adopting the technical scheme, the proximity switch is connected into the car top maintenance circuit, and along with the downward movement of the middle support, the elevator can be switched to the running state after the proximity switch is triggered, so that the car top guardrail is prevented from colliding with the top of the shaft due to the fact that the car top guardrail is not folded when the elevator runs.
The technical proposal of the utility model is also that: the transmission mechanism is a chain transmission mechanism, the chain transmission mechanism comprises a driving chain wheel, a driven chain wheel and a chain, the driving chain wheel is connected with the motor, and the driven chain wheel is connected with the lead screw.
The technical proposal of the utility model is also that: the third lower connecting rods are arranged at intervals along the length direction of the bottom plate.
The technical proposal of the utility model is also that: one end and the middle part of the screw rod are respectively connected with the middle bracket through bearings. By adopting the technical scheme, the support rigidity of the screw rod to the middle support can be improved.
The working principle of the folding car top guardrail of the embodiment is as follows: before maintenance personnel enter the car top area, the motor is controlled to rotate forwards through a switch at an inlet, the motor drives lead screws on two sides to rotate synchronously through a transmission mechanism, the lead screws drive a first nut and a second nut to move reversely, so that a first lower connecting rod, a second lower connecting rod, a first upper connecting rod and a second upper connecting rod swing, and meanwhile, a horizontal connecting rod drives a third lower connecting rod and a third upper connecting rod to swing, and finally, the first lower connecting rod, the second lower connecting rod, the third lower connecting rod, the first upper connecting rod, the second upper connecting rod and the third upper connecting rod are in a vertical state, so that a car top support is unfolded. After maintenance is finished, the maintenance personnel quit the car top area, and the switch at the inlet controls the motor to rotate reversely, so that the car top support is recovered to the shrinkage state.
Compared with the prior art, the utility model discloses foldable sedan-chair top guardrail's beneficial effect does: (1) because the lower extreme of first lower connecting rod, the lower extreme of second lower connecting rod and the lower extreme of third lower connecting rod are pin-jointed in the bottom plate along the length direction interval of bottom plate, and the upper end of first upper connecting rod, the upper end of second upper connecting rod and the upper end of third upper connecting rod are pin-jointed in the roof along the length direction interval of roof, consequently the utility model discloses a folding degree of sedan-chair top guardrail is big, can contract to lower height during the elevator operation, can reduce well top layer height in order to reduce construction cost; (2) the motor drives the screw rods on the two sides to synchronously rotate so as to drive the car top guardrail to integrally extend, the operation is simple and rapid, and the maintenance personnel can extend the guardrail outside the car top area, so that potential safety hazards are eliminated; (3) the side guardrail forms netted guardrail after stretching, and the security performance is high.
Drawings
Fig. 1 is a perspective view of an extended state of a folding ceiling guardrail in an embodiment.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Figure 3 is a front view of the extended state of the folding ceiling guardrail of the embodiment.
Fig. 4 is a perspective view of the folding ceiling guardrail in the embodiment in a retracted state.
Figure 5 is a front view of the collapsed car top guardrail of the embodiment.
Fig. 6 is a perspective view of the middle guard rail (hidden link plate) in the embodiment.
In the figure: 1. the device comprises a first lower connecting rod, a second lower connecting rod, a third lower connecting rod, a first upper connecting rod, a second upper connecting rod, a third upper connecting rod, a connecting plate, a bottom plate, a top plate, a horizontal connecting rod, a connecting plate, a middle support, a screw rod, a first nut, a second nut, a motor, a second nut, a proximity switch, a driving chain wheel, a driven chain wheel, a.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the following further describes the embodiments of the present invention with reference to the attached drawings.
As shown in fig. 1 to 6, a folding type car top guardrail comprises side guardrails and a middle guardrail, wherein the side guardrails are symmetrically arranged at two sides of the middle guardrail.
The side barrier comprises a base plate 7, a top plate 8, a first lower link 1, a second lower link 2, a third lower link 3, a first upper link 4, a second upper link 5, a third upper link 6 and a horizontal link 9. The first lower link 1, the second lower link 2, the third lower link 3, the first upper link 4, the second upper link 5 and the third upper link 6 are equal in length. The lower ends of the first lower link 1, the second lower link 2 and the third lower link 3 are pivotally connected to the base plate 7 at intervals along the length direction of the base plate 7. The upper ends of the first upper link 4, the second upper link 5 and the third upper link 6 are pivotally connected to the top plate 8 at intervals in the longitudinal direction of the top plate 8. The upper end of the first lower connecting rod 1 is pivoted with the lower end of the first upper connecting rod 4, and the upper end of the second lower connecting rod 2 and the lower end of the second upper connecting rod 5 are pivoted at the same point of the horizontal connecting rod 9. Three third lower connecting rods 3 are arranged at intervals along the length direction of the bottom plate 7, and three third upper connecting rods 6 corresponding to the three third lower connecting rods are arranged at intervals along the length direction of the top plate 8. The upper end of the third lower connecting rod 3 and the lower end of the third upper connecting rod 6 are pivoted at the same point of the horizontal connecting rod 9.
The middle guardrail comprises a connecting plate 10, a middle bracket 11, a screw rod 12, a first nut 13, a second nut 14, a motor 15, a transmission mechanism and a proximity switch 16. Two ends of the connecting plate 10 are respectively fixedly connected with the two top plates 8. The screw rods 12 are provided with two screw rods and symmetrically installed on the middle support 11, and specifically, one end and the middle part of the screw rod 12 are respectively connected with the middle support 11 through bearings 20. The screw thread turning directions of the first nut 13 and the second nut 14 are opposite and are in threaded fit with the screw rod 12, the first nut 13 is pivoted with the upper end of the first lower connecting rod 1, and the second nut 14 is pivoted with the upper end of the second lower connecting rod 2. The motor 15 is mounted on the middle bracket 11, the motor 15 is connected with the two lead screws 12 through a transmission mechanism, specifically, the transmission mechanism of the embodiment is a chain transmission mechanism, the chain transmission mechanism includes a driving sprocket 17, a driven sprocket 18 and a chain 19, the driving sprocket 17 is connected with the motor 15, and the driven sprocket 18 is connected with the lead screws 12). The proximity switch 16 is provided on the intermediate bracket 11 with its probe vertically downward.
An emergency power supply can be arranged on the car top to provide electric energy for the motor 15 and prevent the motor 15 from being started.
The working principle of the folding car top guardrail of the embodiment is as follows: before a maintenance worker enters a car top area, a switch at an entrance controls a motor 15 to rotate forward, the motor 15 drives screw rods 12 at two sides to rotate synchronously through a transmission mechanism, the screw rods 12 drive a first nut 13 and a second nut 14 to move reversely, so that a first lower connecting rod 1, a second lower connecting rod 2, a first upper connecting rod 4 and a second upper connecting rod 5 swing, and meanwhile, a horizontal connecting rod 9 drives a third lower connecting rod 3 and a third upper connecting rod 6 to swing, as shown in fig. 1 and 3, finally, the first lower connecting rod 1, the second lower connecting rod 2, the third lower connecting rod 3, the first upper connecting rod 4, the second upper connecting rod 5 and the third upper connecting rod 6 are all in a vertical state, so that a car top support is unfolded. After maintenance is finished, maintenance personnel quit the car top area, the switch control motor 15 at the inlet is used for controlling reverse rotation, so that the car top support is recovered to a contraction state (as shown in figures 4 and 5), and along with downward movement of the middle support 11, when the proximity switch 16 is triggered, the elevator can be switched to a running state, and when the elevator runs, the car top guardrail is prevented from colliding with the top of a hoistway due to non-folding.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (5)
1. The utility model provides a foldable sedan-chair top guardrail which characterized in that: the guardrail comprises side guardrails and a middle guardrail, wherein the side guardrails are symmetrically arranged on two sides of the middle guardrail; the side guardrail comprises a bottom plate (7), a top plate (8), a first lower connecting rod (1), a second lower connecting rod (2), a third lower connecting rod (3), a first upper connecting rod (4), a second upper connecting rod (5), a third upper connecting rod (6) and a horizontal connecting rod (9), wherein the lengths of the first lower connecting rod (1), the second lower connecting rod (2), the third lower connecting rod (3), the first upper connecting rod (4), the second upper connecting rod (5) and the third upper connecting rod (6) are equal, the lower ends of the first lower connecting rod (1), the second lower connecting rod (2) and the third lower connecting rod (3) are pivoted to the bottom plate (7) at intervals along the length direction of the bottom plate (7), the upper ends of the first upper connecting rod (4), the second upper connecting rod (5) and the third upper connecting rod (6) are pivoted to the top plate (8) at intervals along the length direction of the top plate (8), the upper end of the first lower connecting rod (1) is pivoted with the lower end of the first upper connecting rod (4), the upper end of the second lower connecting rod (2) and the lower end of the second upper connecting rod (5) are pivoted at the same point of the horizontal connecting rod (9), and the upper end of the third lower connecting rod (3) and the lower end of the third upper connecting rod (6) are pivoted at the same point of the horizontal connecting rod (9); middle guardrail includes connecting plate (10), middle support (11), lead screw (12), first nut (13), second nut (14), motor (15) and drive mechanism, the both ends of connecting plate (10) respectively with two roof (8) fixed connection, lead screw (12) are equipped with two and the symmetry is installed on middle support (11), the screw thread of first nut (13) and second nut (14) revolves to opposite and all with lead screw (12) screw-thread fit, the upper end pin joint of first nut (13) and first lower connecting rod (1), the upper end pin joint of second nut (14) and second lower connecting rod (2), motor (15) are installed on middle support (11), motor (15) are connected with two lead screws (12) through drive mechanism.
2. The folding ceiling guardrail of claim 1 further comprising: the device also comprises a proximity switch (16), wherein the proximity switch (16) is arranged on the middle bracket (11) and the probe of the proximity switch is vertically downward.
3. The folding ceiling guardrail of claim 1 or 2 wherein: the transmission mechanism is a chain transmission mechanism, the chain transmission mechanism comprises a driving chain wheel (17), a driven chain wheel (18) and a chain (19), the driving chain wheel (17) is connected with a motor (15), and the driven chain wheel (18) is connected with a lead screw (12).
4. The folding ceiling guardrail of claim 1 or 2 wherein: the third lower connecting rods (3) are arranged at intervals along the length direction of the bottom plate (7).
5. The folding ceiling guardrail of claim 1 or 2 wherein: one end and the middle part of the screw rod (12) are respectively connected with the middle bracket (11) through a bearing (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921919772.XU CN210735899U (en) | 2019-11-08 | 2019-11-08 | Folding car top guardrail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921919772.XU CN210735899U (en) | 2019-11-08 | 2019-11-08 | Folding car top guardrail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210735899U true CN210735899U (en) | 2020-06-12 |
Family
ID=70988369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921919772.XU Expired - Fee Related CN210735899U (en) | 2019-11-08 | 2019-11-08 | Folding car top guardrail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210735899U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431222A (en) * | 2020-10-26 | 2021-03-02 | 温州华睿建设有限公司 | Municipal underground pipe gallery |
-
2019
- 2019-11-08 CN CN201921919772.XU patent/CN210735899U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431222A (en) * | 2020-10-26 | 2021-03-02 | 温州华睿建设有限公司 | Municipal underground pipe gallery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20200612 Termination date: 20201108 |