Fence door structure of construction hoist

Abstract

The utility model discloses a fence door mechanism of a construction hoist in the technical field of construction machinery. The device comprises a lifting platform, a fence door frame and a fence door, a driving motor is fixedly arranged on the fence door frame, a rack is vertically and fixedly arranged on the fence door, and a gear at the shaft end of the driving motor is matched with the rack, so that the fence door is vertically and movably connected to the fence door frame; a lifting table in-place sensor is further arranged and used for detecting whether the lifting table reaches the first layer or not, and the lifting table in-place sensor is electrically connected with the driving motor. A door closing limit switch and a door opening limit switch are further arranged on the fence door frame and used for controlling the movement stroke of the fence door relative to the fence door frame. A driving motor is additionally arranged on a fence door frame, a fence door is provided with a rack, a gear at the shaft end of the driving motor is matched with the rack to drive the fence door to be opened and closed, a lifting table in-place sensor is combined, the fence door is automatically opened after a lifting table is in place, and the problems that in the prior art, mechanical linkage fault points of the fence door and a feeding door are multiple, and the feeding door is large in load are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery, in particular to a fence door mechanism of a construction elevator. Background Art

[0002] In the construction of high-rise buildings, in order to provide safety protection for the areas around construction elevators, a fence door structure is generally set up on the first floor to isolate the working area from the non-working area and prevent unauthorized personnel from entering the dangerous area.

[0003] The fence door of the traditional construction elevator is manually opened and closed, and it needs to be manually pulled when opening and closing the door, which not only consumes the physical strength of the workers, but also has low work efficiency and poor safety. On this basis, the intelligent construction elevator appears in the prior art, which mechanically connects the feed door and the fence door to generate linkage, so that the opening and closing of the feed door can drive the opening and closing of the fence door.

[0004] Specifically, Chinese patents: CN216272614U and CN220502382U both disclose a structure in which a feed door and a fence door are linked, so that the opening and closing of the feed door can drive the opening and closing of the fence door. However, in practice, the mechanical linkage between the feed door and the fence door has many failure points and greatly increases the load on the feed door. Utility Model Content

[0005] In order to overcome the technical problems of mechanical linkage between fence door and feed door in existing construction elevators, multiple fault points and heavy load on the feed door, the utility model provides a fence door structure for a construction elevator.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] The construction elevator fence door structure includes a lifting platform, a fence door frame and a fence door. The lifting platform is arranged in the fence door frame, the fence door is movably connected to the fence door frame, a driving motor is fixed on the fence door frame, a rack is vertically fixed on the fence door, the gear at the end of the driving motor shaft and the rack cooperate with each other, so that the fence door is movably connected to the fence door frame up and down; a lifting platform in-position sensor is also provided for detecting whether the lifting platform has reached the first floor, and the lifting platform in-position sensor is electrically connected to the driving motor; a door limit switch and a door opening limit switch are also provided on the fence door frame for controlling the movement stroke of the fence door relative to the fence door frame.

[0008] In the present application, a driving motor is arranged on the fence door frame, a rack is arranged on the fence door, and the gear at the end of the driving motor shaft cooperates with the rack to realize the up and down movement of the fence door relative to the fence door frame, that is, the door opening and closing action. The lifting platform, that is, the cage or car in the fence door frame, is provided with a lifting platform in-position sensor, and the lifting platform in-position sensor is electrically connected to the driving motor, so that after the lifting platform reaches the first floor, the driving motor is operated, and the fence door moves upward relative to the fence door frame, thereby realizing automatic door opening. A closing limit switch and an opening limit switch are used to control the movement stroke of the fence door.

[0009] In some embodiments, it also includes a wire rope, a counterweight and a pulley. One end of the wire rope is connected to the fence gate, and the other end is connected to the counterweight through the pulley. When the wire rope passes through the pulley, the fence gate and the counterweight move in opposite directions.

[0010] In this embodiment, by setting a counterweight, the counterweight and the fence gate move in opposite directions to balance the load and ensure safer and more stable operation.

[0011] In some embodiments, a magnetic induction switch is fixedly set on the counterweight, and the movement of the fence door drives the movement of the counterweight, so that the magnetic induction switch on the counterweight cooperates with the closing limit switch and the opening limit switch on the fence door frame.

[0012] In this embodiment, the magnetic induction switch is arranged on the counterweight to cooperate with the door closing limit switch and the door opening limit switch to control the travel of the fence door. Obviously, the counterweight and the fence door are both movable parts. The magnetic induction switch can also be fixedly connected to the fence door in some other embodiments. Considering that materials and people enter and exit near the fence door, in order to avoid interference and accidental damage to the magnetic induction switch, the preferred magnetic induction switch is fixedly arranged on the counterweight.

[0013] In some embodiments, the mass of the fence gate and the mass of the counterweight are equal.

[0014] In this embodiment, the mass of the fence gate and the mass of the counterweight are equal to ensure that the system is always in a balanced and stable state, so that the drive motor only needs to overcome friction and a small amount of starting acceleration force to drive the fence gate, reducing the work required by the drive motor.

[0015] In some embodiments, the fence gate includes a rectangular tube structure, the extension direction of the rectangular tube structure is consistent with the extension direction of the rack, a strip-shaped gap is opened in the extension direction of the rectangular tube structure, the rack is fixedly connected to the inner wall of the rectangular tube, and the tooth surface is higher than the outer surface of the rectangular tube.

[0016] In this embodiment, the rack is fixed by using a rectangular tube structure. The rectangular tube has good rigidity, strength and torsion resistance, and can achieve better support and fixing effects.

[0017] In some embodiments, a guide wheel is fixedly arranged at the upper end of the fence door frame, and the rectangular tube structure moves up and down along the guide wheel groove.

[0018] In this embodiment, a guide wheel is fixedly arranged on the fence door frame. When the fence door moves up and down relative to the fence door frame, the rectangular tube structure moves up and down along the guide wheel groove, and the guide wheel plays a guiding role.

[0019] In some embodiments, an anti-pinch device is provided at the lower end of the fence gate.

[0020] In this embodiment, an anti-pinch device is provided at the lower end of the fence door to improve the safety of the fence door when it is closed. When the fence door is closed, once it senses that a person or object has passed, it stops closing or reverses to open. In practice, it includes contact anti-pinch devices and non-contact anti-pinch devices, which will not be described in detail here.

[0021] In some embodiments, the fence door is mounted on the fence door frame via rollers.

[0022] In this embodiment, the fence door and the fence door frame are connected by rollers, which further reduces the resistance to relative movement between the fence door and the fence door frame.

[0023] In some embodiments, a fence door lock is provided at the upper end of the fence door frame, and a pressure block is correspondingly provided on the lifting platform. When the lifting platform reaches the first floor, the pressure block abuts against the fence door lock to unlock it.

[0024] In this embodiment, by adding a fence door lock, the linkage and interlocking of the lifting platform and the fence door are further improved, thereby improving safety and preventing the fence door from moving when the lifting platform has not reached the first floor.

[0025] The beneficial effects of the utility model are:

[0026] 1. In the present application, a driving motor is added to the fence door frame, a rack is set on the fence door, and the gear on the end of the driving motor shaft cooperates with the rack to drive the fence door to open and close. Combined with the lifting platform in place sensor, the fence door is automatically opened after the lifting platform is in place, avoiding the problems of many failure points in the mechanical linkage of the fence door and the feed door and the heavy load on the feed door in the prior art.

[0027] 2. By setting a counterweight, the opening and closing of the fence door is safer and smoother, and the energy of the drive motor is saved; the fence door includes a rectangular tube structure, which is convenient for the connection and fixation of the rack on the one hand, and achieves a better supporting and fixing effect on the other hand; the fence door frame is provided with a guide wheel to provide a guiding effect for the opening and closing of the fence door; the fence door and the fence door frame are connected by rollers to reduce relative motion damping.

[0028] 3. An anti-pinch device is installed at the lower end of the fence door, and a fence door lock is installed at the upper end to improve the overall safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A front view of the construction elevator fence door structure provided by the utility model;

[0030] Figure 2 A side view of the construction elevator fence door structure provided by the utility model;

[0031] Figure 3 for Figure 2 A partial enlarged view of

[0032] Figure 4 A front view of a fence door frame in a fence door structure for a construction elevator provided by the utility model;

[0033] Figure 5 A side view of a fence door frame in a construction elevator fence door structure provided by the utility model;

[0034] Figure 6 for Figure 4 Schematic diagram of the counterweight guide rail structure observed from the middle A direction;

[0035] Figure 7 A front view of a fence door in a fence door structure for a construction elevator provided by the utility model;

[0036] Figure 8 for Figure 7 A partial schematic diagram of the middle B direction;

[0037] Fig. 9 for Figure 7 Schematic diagram of the cross section of CC

[0038] Fig.10 A front view of a counterweight in a construction elevator fence door structure provided by the utility model;

[0039] Fig.11 The utility model is a side view of the counterweight in the construction elevator fence door structure.

[0040] Marked in the figure are, 1-counterweight, 2-wire rope, 3-pulley, 4-fence door frame, 5-fence door, 6-drive motor, 7-adjustable pull rod, 8-guide wheel, 9-fence door lock, 10-side support column, 11-pulley seat, 12-guide wheel seat, 13-motor mounting seat, 14-door closing limit switch, 15-door opening limit switch, 16-counterweight guide rail, 17-rectangular tube, 18-rack, 19-anti-pinch device, 20-shock absorber block, 21-roller, 22-screw, 23-nut, 24-lifting ear, 25-counterweight body, 26-magnetic induction switch. DETAILED DESCRIPTION

[0041] The utility model is further described below in conjunction with the accompanying drawings.

[0042] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0043] Combination Figure 1-Figure 11 As shown, the utility model provides a construction elevator fence door structure.

[0044] The construction elevator fence door structure includes a lifting platform, a fence door frame 4 and a fence door 5. The lifting platform is arranged in the fence door frame 4, and the fence door 5 is movably connected to the fence door frame 4. A driving motor 6 is fixed on the fence door frame 4, and a rack 18 is vertically fixed on the fence door 5. The gear at the shaft end of the driving motor 6 and the rack 18 cooperate with each other, so that the fence door 5 is movably connected to the fence door frame 4 up and down; a lifting platform in-position sensor is also provided for detecting whether the lifting platform has reached the first floor, and the lifting platform in-position sensor is electrically connected to the driving motor 6; a door limit switch 14 and a door opening limit switch 15 are also provided on the fence door frame 4 for controlling the movement stroke of the fence door 5 relative to the fence door frame 4.

[0045] In the present application, a drive motor 6 is provided on the fence door frame 4, a rack 18 is provided on the fence door 5, and the gear on the shaft end of the drive motor 6 cooperates with the rack 18 to realize the up and down movement of the fence door 5 relative to the fence door frame 4, that is, the door opening and closing action. The lifting platform, that is, the cage or car in the fence door frame 4, is provided with a lift in place sensor, and the lift in place sensor is electrically connected to the drive motor 6, so that after the lift reaches the first floor, the drive motor 6 is operated, and the fence door 5 moves upward relative to the fence door frame 4, thereby realizing automatic door opening. The door closing limit switch 14 and the door opening limit switch 15 are supplemented to control the movement stroke of the fence door 5.

[0046] like Figure 4 As shown, a pulley seat 11 is provided on the side supporting column 10 of the fence door frame 4 for fixing the pulley 3; a motor mounting seat 13 is provided on the side supporting column 10 of the fence door frame 4 for fixing the drive motor 6.

[0047] Furthermore, in this embodiment, an entry detection sensor is also provided. When it is detected that no one or object passes through the door, the control system is set to issue a command after a certain number of seconds to control the operation of the drive motor 6 to realize the automatic closing of the fence door 5.

[0048] When encountering an emergency or power outage, the motor switch can be turned on by the key to put the drive in a disengaged state, thereby manually opening and closing the fence door 5.

[0049] like Figure 1As shown, in this embodiment, it also includes a steel wire rope 2, a counterweight 1 and a pulley 3. One end of the steel wire rope 2 is connected to the fence gate 5, and the other end is connected to the counterweight 1 through the pulley 3. The fence gate 5 and the counterweight 1 move in opposite directions. By setting the counterweight 1, the counterweight 1 and the fence gate 5 move in opposite directions to balance the load and ensure safer and more stable operation. Specifically, in this embodiment, one end of the steel wire rope 2 is connected to the lower part of the fence gate 5, and the other end is connected to the counterweight 1.

[0050] Specifically, in a double-cage construction elevator, there are two cages, namely the aforementioned lifting platform, corresponding to two fence doors 5, each fence door 5 corresponds to two counterweights 1, and each fence door 5 corresponds to a drive motor 6.

[0051] In this embodiment, a magnetic induction switch 26 is fixedly arranged on the counterweight 1, and the movement of the fence door 5 drives the movement of the counterweight 1, so that the magnetic induction switch 26 on the counterweight 1 cooperates with the door closing limit switch 14 and the door opening limit switch 15 on the fence door frame 4. Here, the magnetic induction switch 26 is arranged on the counterweight 1 to cooperate with the door closing limit switch 14 and the door opening limit switch 15 to control the travel of the fence door 5. Obviously, the counterweight 1 and the fence door 5 are both movable parts, and the magnetic induction switch 26 can also be fixedly connected to the fence door 5 in some other embodiments. Considering that there are materials and people entering and exiting near the fence door 5, in order to avoid interference and accidental damage to the magnetic induction switch 26, the preferred magnetic induction switch 26 is fixedly arranged on the counterweight 1.

[0052] Combination Fig.10 and Fig.11 As shown, the counterweight 1 comprises a lifting eye 24 and a counterweight body 25, and the lifting eye 24 is used to connect the counterweight body 25 with the steel wire rope 2. Figure 4 and Figure 6 As shown, a counterweight guide rail 16 is provided on the side support column 10 of the fence door frame 4 for guiding the counterweight 1.

[0053] In this embodiment, the mass of the fence gate 5 is preferably equal to the mass of the counterweight 1 to ensure that the system is always in a balanced and stable state, so that the drive motor 6 only needs to overcome friction and a small amount of starting acceleration force to drive the fence gate 5 to move, reducing the work required by the drive motor 6.

[0054] In this embodiment, the fence gate 5 includes a rectangular tube 17 structure, the extension direction of the rectangular tube 17 structure is consistent with the extension direction of the rack 18, a strip-shaped gap is provided in the extension direction of the rectangular tube 17 structure, and the rack 18 is fixedly connected to the inner wall of the rectangular tube 17, and the tooth surface is higher than the rectangular tube 17. By using the rectangular tube 17 structure to fix the rack 18, the rectangular tube 17 has good rigidity, strength and torsion resistance, and can achieve better support and fixing effects.

[0055] Combination Figure 7-Figure 9As shown, the rack 18 is fixed to the fence door 5 through the rectangular tube 17. Specifically, the rectangular tube 17 is fixed to the fence door 5. Preferably, the rectangular tube 17 forms the door frame of the fence door 5. A notch is opened on the surface of the rectangular tube 17. The rack 18 is sunk into the rectangular tube 17. The tooth surface of the rack 18 emerges from the outer surface of the rectangular tube 17 to connect with the gear at the shaft end of the drive motor 6. Fig. 9 As shown, an attachment seat is welded on the back of the rack 18 , and a nut 23 is welded on the rack 18 , which is fixed to the back of the rectangular tube 17 by screws 22 .

[0056] like Figure 7 As shown, a shock-absorbing block 20 is also provided at the lower end of the fence door 5 for buffering, shock absorption and noise reduction when the fence door 5 is closed.

[0057] In this embodiment, the guide wheel 8 is fixedly arranged on the fence door frame 4. When the fence door 5 moves up and down relative to the fence door frame 4, the rectangular tube 17 structure moves up and down along the guide wheel groove, and the guide wheel 8 plays a guiding role. Figure 4 As shown, a guide wheel seat 12 is provided on the side support column 10 of the fence door frame 4 for fixing the guide wheel 8.

[0058] In this embodiment, an anti-pinch device 19 is provided at the lower end of the fence door 5 to improve the safety of the fence door 5 when it is closed. It is used when the fence door 5 is closed, and once it senses that a person or an object has passed, the closing action is stopped or reversed to open. In practice, it includes contact anti-pinch devices and non-contact anti-pinch devices. The contact anti-pinch device is generally provided with a pressure sensor. When the fence door 5 is closed and encounters resistance during the process, the pressure sensor is triggered; the non-contact anti-pinch device is generally based on infrared, electric field sensing and other technologies. By setting a sensor, it reacts in advance when a person or an object has not touched the fence door 5. There is no specific restriction on the specific setting of the anti-pinch device 19 here.

[0059] In this embodiment, the fence door 5 and the fence door frame 4 are connected by rollers 21, which further reduces the resistance to relative movement between the fence door 5 and the fence door frame 4. Figure 7 As shown, in this embodiment, the roller 21 is arranged at the lower end of the fence door 5, between the fence door 5 and the fence door frame 4.

[0060] In this embodiment, a fence door lock 9 is provided at the upper end of the fence door frame 4, and a pressure block is provided corresponding to the lifting platform. When the lifting platform reaches the first floor, the pressure block abuts against the fence door lock 9 to unlock. By adding the fence door lock 9, the linkage interlocking of the lifting platform and the fence door 5 is further improved, and the safety is improved to prevent the fence door 5 from moving when the lifting platform has not reached the first floor. The lifting platform is provided with a pressure block and the fence door lock 9 on the fence door frame 4 are linked together, which is a prior art and will not be described in detail here. For details, please refer to the Chinese utility model patent with announcement number: CN203411212U.

[0061] like Figure 2As shown, in this embodiment, an adjustable tie rod 7 is further provided between the fence door frame 4 and the middle column of the construction elevator. Conventionally, the lifting platform moves up and down along the middle column, and the adjustable tie rod 7 is used to adjust the distance between the fence door frame 4 and the lifting platform. Specifically, the adjustable tie rod 7 is a double-headed screw, one end of which is left-handed and the other end is right-handed, which cooperates with the screw holes of the sleeves at both ends. By rotating the double-headed screw, the length of the adjustable tie rod 7 can be changed, thereby adjusting the position of the fence door frame 4.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A construction elevator fence door structure, comprising a lifting platform, a fence door frame (4) and a fence door (5), wherein the lifting platform is arranged in the fence door frame (4), and the fence door (5) is movably connected to the fence door frame (4 ... and wherein the lifting platform is arranged in the fence door frame (4), and the fence door (5) is movably connected to the fence door frame (4), and wherein the lifting platform is arranged in the fence door frame (4), and the fence door (5) is movably connected to the fence door frame (4), and wherein the lifting platform is arranged in the fence door frame (4), and the fence door ( A driving motor (6) is fixedly provided on the fence door frame (4), a rack (18) is vertically fixedly provided on the fence door (5), and the gear at the shaft end of the driving motor (6) and the rack (18) cooperate with each other, so that the fence door (5) is movably connected to the fence door frame (4) in an up-and-down manner; A lifting platform arrival sensor is also provided to detect whether the lifting platform has reached the first floor, and the lifting platform arrival sensor is electrically connected to a driving motor (6); The fence door frame (4) is also provided with a door limit switch (14) and a door opening limit switch (15) for controlling the movement stroke of the fence door (5) relative to the fence door frame (4).

2. The construction elevator fence door structure as claimed in claim 1, characterized in that: The invention also comprises a steel wire rope (2), a counterweight (1) and a pulley (3); one end of the steel wire rope (2) is connected to the fence gate (5), and the other end is connected to the counterweight (1) through the pulley (3); the fence gate (5) and the counterweight (1) move in opposite directions.

3. The construction elevator fence door structure as claimed in claim 2, characterized in that: A magnetic induction switch (26) is fixedly arranged on the counterweight (1), and the movement of the fence door (5) drives the counterweight (1) to move, so that the magnetic induction switch (26) on the counterweight (1) cooperates with the door closing limit switch (14) and the door opening limit switch (15) on the fence door frame (4).

4. The construction elevator fence door structure as claimed in claim 2, characterized in that: The mass of the fence gate (5) is equal to the mass of the counterweight (1).

5. The construction elevator fence door structure as claimed in claim 1, characterized in that: The fence gate (5) comprises a rectangular tube (17) structure. The extending direction of the rectangular tube (17) is consistent with the extending direction of the rack (18). A strip-shaped notch is provided in the extending direction of the rectangular tube (17). The rack (18) is fixedly connected to the inner wall of the rectangular tube (17), and the tooth surface is higher than the outer surface of the rectangular tube (17).

6. The construction elevator fence door structure as claimed in claim 5, characterized in that: A guide wheel (8) is fixedly arranged on the upper end of the fence door frame (4), and the rectangular tube (17) structure moves up and down along the guide wheel groove.

7. The construction elevator fence door structure as claimed in claim 1, characterized in that: An anti-pinch device (19) is arranged at the lower end of the fence door (5).

8. The construction elevator fence door structure as claimed in claim 1, characterized in that: The fence door (5) is installed on the fence door frame (4) via a roller (21).

9. The construction elevator fence door structure according to any one of claims 1 to 8, characterized in that: A fence door lock (9) is arranged at the upper end of the fence door frame (4), and a pressure block is correspondingly arranged on the lifting platform. When the lifting platform reaches the first floor, the pressure block abuts against the fence door lock (9) to realize unlocking.

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