CN114635552A - Elevator shaft lifting construction protection operation platform - Google Patents

Abstract

The invention relates to the technical field of elevator shaft construction, in particular to a protective operation platform for elevator shaft lifting construction, comprising a protective platform that can be hung and lowered into the elevator shaft, a plurality of telescopic blocks that are movably plugged on the side of the protective platform, and a protective platform installed in the protective platform. The driving mechanism and the lifting mechanism installed on the upper surface of the protective platform; the driving mechanism is used to drive the telescopic block to extend out of the protective platform, so that the telescopic block is inserted into the reserved hole in the elevator shaft wall to support the protective platform; the lifting mechanism is used to support the staff to ascend or drop. The invention can support the reserved hole in the elevator shaft wall and adjust the construction height of workers.

Description

Elevator shaft lifting construction protection operation platform

technical field

The invention relates to the technical field of elevator shaft construction, in particular to an elevator shaft lifting construction protection operation platform.

Background technique

In the construction of elevator shafts, it is usually necessary to build an elevator shaft operation platform in the elevator shaft, which is convenient for workers to perform operations such as masonry and wiring in the elevator shaft on the platform.

At present, there are mainly two ways to build the elevator shaft operating platform: ① Set up a shelf from bottom to top as a protection and construction operation platform. This method has high construction cost, and with the increase of height, the potential safety hazard increases, and daily maintenance is inconvenient; ② Using the traditional finished elevator shaft operation platform, this method requires multiple customizations when the floor height is variable, which increases the cost, and the door frame needs to be placed on the platform to adjust the height during the construction of the elevator shaft inner mold, which is not convenient for construction.

SUMMARY OF THE INVENTION

In view of the above problems, the purpose of the present invention is to provide an elevator shaft lifting construction protection operation platform, which can be supported on a reserved hole in the elevator shaft wall and adjust the construction height of workers.

The above-mentioned technical purpose of the present invention is achieved through the following technical solutions:

Elevator shaft lifting construction protective operation platform, including a protective platform that can be hung and lowered into the elevator shaft, a plurality of telescopic blocks that are movably plugged into the side of the protective platform, a drive mechanism installed in the protective platform, and a lift installed on the upper surface of the protective platform mechanism; the driving mechanism is used to drive the telescopic block to extend out of the protective platform, so that the telescopic block is inserted into the reserved hole in the elevator shaft wall to support the protective platform; the lifting mechanism is used to support the staff to ascend or descend.

Preferably, the number of the telescopic blocks is set to four, and the four telescopic blocks are respectively movably plugged at four corners of the protective platform.

Preferably, the drive mechanism includes a biaxial stepping motor and two screw rods; both ends of the protective platform are provided with a chute extending along the length of the protective platform, and the middle of the upper surface of the protective platform is provided along the protective platform. The installation grooves extend in the width direction and communicate with the two chutes; the four telescopic blocks are respectively movably inserted into the four notches of the two chutes; the two screw rods are respectively arranged in the two chutes, and the wires The two ends of the rod are respectively connected with the corresponding telescopic blocks with positive and negative threads, and the middle part of the screw rod is coaxially fixedly connected with a worm wheel; the biaxial stepping motor is fixedly arranged in the installation groove, and the two output shafts of the biaxial stepping motor The ends of the two worms are coaxially and fixedly connected with worms, and the ends of the two worms away from the output shaft are respectively connected with the corresponding worm gears; the biaxial stepping motor drives the worms to rotate, and drives the screw through the transmission connection between the worm and the worm. Rotate, so that the two telescopic blocks at both ends of the screw rod move away from each other synchronously under the action of the reverse thread to extend out of the chute, or synchronously approach each other to retract the chute.

Preferably, a cover plate for opening and closing the installation slot is vertically rotatably connected to the slot of the installation slot.

Preferably, the output shaft of the biaxial stepping motor is coaxially and fixedly connected to the worm through a coupling.

Preferably, the worm is installed in the installation groove through a bearing seat.

Preferably, an upper limit switch is arranged at the slot of the chute on the protective platform, and a lower limit switch is arranged on the inner wall of the chute between the telescopic block and the worm wheel; the upper limit switch and the lower limit switch are both connected to the double shaft The stepper motor is electrically connected.

Preferably, the lifting mechanism is a scissor hydraulic lift.

Preferably, hooks are provided at the four corners of the upper surface of the protective platform.

Owing to adopting the above-mentioned technical scheme, the present invention has the following beneficial effects:

The elevator shaft lifting construction protective operation platform provided by the present invention adopts a protective platform that can be hung and lowered into the elevator shaft and a plurality of telescopic blocks that are movably inserted on the side of the protective platform. The block is inserted into the reserved opening of the elevator shaft wall to support the protective platform, and the lifting mechanism arranged on the protective platform can support the staff to rise or fall to meet the requirements of the construction height; compared with the prior art, the present invention does not It is necessary to set up multiple shelves from the bottom to the top, which saves cost, has high safety, and is easy to maintain. At the same time, there is no need to place additional door frames to adjust the height, which is more convenient for construction and can be used for turnover.

Description of drawings

Fig. 1 is the overall schematic diagram of the present invention;

Fig. 2 is the front schematic view of the present invention;

Fig. 3 is the perspective view of the protection platform of the present invention;

Fig. 4 is the three-dimensional sectional view of the protection platform of the present invention;

Fig. 5 is the perspective view of the drive mechanism of the present invention;

Fig. 6 is the top view of the drive mechanism of the present invention;

FIG. 7 is a partial cross-sectional view of one of the preferred embodiments of the present invention.

In the drawings, 1, protective platform; 11, chute; 12, installation groove; 121, cover plate; 2, telescopic block; 31, dual-axis stepping motor; 32, screw; 33, worm gear; 34, worm; 4. Lifting mechanism; 5. Coupling; 6. Bearing seat; 7. Hook; 81. Upper limit switch; 82, Lower limit switch.

Detailed ways

The technical solutions of the patent of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" appear as The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, with a specific orientation. The orientation configuration and operation are therefore not to be construed as limitations of the present invention.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a Removable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediate medium, and it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

1-6, the elevator shaft lifting construction protection operation platform provided in this embodiment includes a protection platform 1, a plurality of telescopic blocks 2, a driving mechanism and a lifting mechanism 4; the protection platform 1 is square, and its size is slightly smaller than the elevator shaft The size of the wellhead is such that the protective platform 1 can be hung into the protective platform 1 in the elevator shaft; a plurality of telescopic blocks 2 are movably inserted on the side of the protective platform 1, and the driving mechanism is installed in the protective platform 1 to drive the telescopic blocks 2 to extend out of the protective platform. 1. Insert the telescopic block 2 into the reserved hole of the elevator shaft wall to support the protective platform 1; the lifting mechanism 4 is installed on the upper surface of the protective platform 1 to support the staff to ascend or descend.

In this embodiment, the number of the telescopic blocks 2 can be set to four, and the four telescopic blocks 2 are respectively movably plugged at the four corners of the protective platform 1 . Specifically, the driving mechanism includes a biaxial stepping motor 31 and two screw rods 32; the model of the biaxial stepping motor 31 is 57HZ80-22; The chute 11, the middle of the upper surface of the protective platform 1 is provided with a mounting groove 12 extending along the width direction of the protective platform 1 and connecting the two chutes 11; The two screw rods 32 are respectively arranged in the two chutes 11 through rotation, the two ends of the screw rod 32 are respectively connected with the corresponding telescopic blocks 2 forward and reverse threads, and the middle part of the screw rod 32 is coaxially fixedly connected with a worm wheel 33; The biaxial stepping motor 31 is fixedly arranged in the installation slot 12 , and the ends of the two output shafts of the biaxial stepping motor 31 are fixedly connected with worms 34 coaxially. The worm gear 33 is drive-connected. When in use, the biaxial stepping motor 31 drives the worm 34 to rotate, and drives the screw 32 to rotate through the transmission connection between the worm wheel 33 and the worm 34, so that the two telescopic blocks 2 at both ends of the screw 32 are synchronously away from each other under the action of the reverse thread. The protruding chute 11 is inserted into the reserved hole of the elevator shaft wall, thereby supporting the protective platform 1, or the two telescopic blocks 2 are synchronously approached to each other to retract the chute 11, so that the protective platform 1 loses the elevator shaft wall limit to lift or lower the protective platform 1.

On the basis of the above embodiment, a cover plate 121 can be vertically rotatably connected to the notch of the installation groove 12. When the biaxial stepping motor 31 is running, the cover plate 121 is covered to close the installation groove 12 to prevent the biaxial stepping motor 31 from stepping. The motor 31 is affected by falling objects; the cover 121 is opened when maintenance is required, which is convenient to use.

Further, the output shaft of the biaxial stepping motor 31 can be set to be coaxially and fixedly connected to the worm 34 through the coupling 5, and the coupling 5 firmly couples the output shaft of the biaxial stepping motor 31 and the worm 34 to rotate together. , and transmit the motion and torque to the worm 34, which can also prevent the worm 34 from bearing excessive load, and play the role of overload protection.

Among them, the worm 34 can also be installed in the installation groove 12 through the bearing seat 6, and the bearing in the bearing seat 6 is sleeved on the worm 34, which can reduce the friction coefficient during the rotation of the worm 34 and ensure its rotation accuracy.

In a specific embodiment, the lifting mechanism 4 can be set as a hydraulic scissor lift. The hydraulic scissor lift is a commonly used special equipment for high-altitude work. , its power is to push the scissors to unfold and fold through the expansion and contraction of the oil cylinder. Its scissor mechanical structure makes the lifting platform have high stability, wide working platform and high bearing capacity, so that the aerial work range is larger, and it is suitable for multiple people to work at the same time.

As a preferred embodiment, arc-shaped hooks 7 can be welded on the four corners of the upper surface of the protective platform 1, so that when the hoisting device lifts the protective platform 1 through the four hooks 7, the protective platform 1 is stressed more evenly, Move more smoothly.

Referring to FIG. 7 , in another preferred embodiment, an upper limit switch 81 is provided on the protective platform 1 at the notch of the chute 11 , and a lower limit switch is provided on the inner wall of the chute 11 between the telescopic block 2 and the worm wheel 33 82; both the upper limit switch 81 and the lower limit switch 82 are electrically connected to the biaxial stepping motor 31, and when the telescopic block 2 moves between the upper limit switch 81 and the lower limit switch 82, the biaxial stepping motor 31 works normally; when When the telescopic block 2 extends to touch the upper limit switch 81 or retracts to touch the lower limit switch 82 , both the upper limit switch 81 and the lower limit switch 82 can disconnect the circuit of the dual-axis stepping motor 31 to prevent telescopic The block 2 is overextended and disengaged from the chute 11 or retracted overly and disengaged from the threaded portion of the lead screw 32 . It should be noted that, the upper limit switch 81 and the lower limit switch 82 are preferably single-wheel roller limit switches whose model is LX19-121.

Working process and principle of the present invention:

First, use the hanging device to lift the protective platform 1, move the protective platform 1 down into the elevator shaft, and make the four telescopic blocks 2 align with the four reserved holes on both sides of the elevator shaft wall, and then use the dual-axis stepping motor 31 The switch makes the output shaft of the biaxial stepping motor 31 rotate in the forward direction to drive the worm 34 to rotate, and the worm 34 rotates through the transmission connection with the worm wheel 33 to drive the screw 32 to rotate. Positive and negative screw connection, so that the two telescopic blocks 2 at both ends of the screw rod 32 can rotate synchronously away from each other and extend out of the chute 11 to be inserted into the reserved hole in the elevator shaft wall, thereby supporting the protective platform 1; the protective platform 1 After the support is stabilized, the worker stands on the lifting mechanism 4 to adjust the construction height to a suitable height through the lifting mechanism 4 to carry out construction.

After the construction is completed, the hanging device is used to connect the protective platform 1 again, and then the output shaft of the double-axis stepping motor 31 is rotated in the opposite direction through the switch of the double-axis stepping motor 31, so that the two telescopic blocks 2 are synchronously approached and retracted. The chute 11, so that the protective platform 1 loses the restriction of the elevator shaft wall, and finally the protective platform 1 can be lifted out through the hanging device.

Although the present invention has been described in detail above with general description and specific embodiments, some modifications or improvements can be made on the basis of the present invention, which will be obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention fall within the scope of the claimed protection of the present invention.

Claims (9)

1. The elevator shaft lifting construction protection operation platform is characterized in that: it comprises a protective platform (1) that can be hung and lowered into the elevator shaft, a plurality of telescopic blocks (2) that are movably inserted on the side of the protective platform (1), and installed in the elevator shaft. A driving mechanism in the protective platform (1) and a lifting mechanism (4) installed on the upper surface of the protective platform (1); the driving mechanism is used to drive the telescopic block (2) to extend out of the protective platform (1) to make the telescopic block (2) ) is inserted into the reserved opening of the elevator shaft wall to support the protective platform (1); the lifting mechanism (4) is used to support the staff to ascend or descend. 2. The elevator shaft lifting construction protection operation platform according to claim 1, characterized in that: the number of the telescopic blocks (2) is set to four, and the four telescopic blocks (2) are respectively movably inserted in the protection at the four corners of the platform (1). 3. The elevator shaft lifting construction protection operation platform according to claim 2, characterized in that: the drive mechanism comprises a biaxial stepping motor (31) and two screw rods (32); the protection platform (1) Both ends are provided with a chute (11) extending along the length direction of the protective platform (1), and the middle of the upper surface of the protective platform (1) is provided with two chutes (11) extending along the width direction of the protective platform (1) and communicating with the two chutes (11) The four said telescopic blocks (2) are respectively movably inserted into the four notches of the two chutes (11); the two said screw rods (32) are respectively arranged in the two chutes In (11), the two ends of the screw rod (32) are respectively connected with the corresponding telescopic blocks (2) with positive and reverse threads, and the middle part of the screw rod (32) is coaxially and fixedly connected with a worm gear (33); the biaxial stepping The motor (31) is fixedly arranged in the installation groove (12), the ends of the two output shafts of the biaxial stepping motor (31) are coaxially and fixedly connected with worms (34), and the two worms (34) are far away from One end of the output shaft is respectively connected with the corresponding worm gear (33) in a drive; the biaxial stepping motor (31) drives the worm (34) to rotate, and drives the screw (32) through the drive connection between the worm gear (33) and the worm (34). ) rotates so that the two telescopic blocks (2) at both ends of the screw rod (32) move away from each other synchronously under the action of the reverse thread to extend out of the chute (11), or approach each other synchronously to retract the chute (11). 4. The elevator shaft lifting construction protection operation platform according to claim 3, characterized in that: a cover plate ( 121). 5. The elevator shaft lifting construction protection operation platform according to claim 4, characterized in that: the output shaft of the biaxial stepping motor (31) is coaxially and fixedly connected to the worm (34) through the coupling (5) . 6 . The elevator shaft lifting construction protection operation platform according to claim 5 , wherein the worm ( 34 ) is installed in the installation groove ( 12 ) through the bearing seat ( 6 ). 7 . 7. The elevator shaft lifting construction protection operation platform according to claim 6, wherein the protection platform (1) is provided with an upper limit switch (81) at the slot of the chute (11), and the chute (11) is provided with an upper limit switch (81). 11) The inner wall is provided with a lower limit switch (82) between the telescopic block (2) and the worm gear (33); the upper limit switch (81) and the lower limit switch (82) are both connected to the biaxial stepping motor (31) electrical connection. 8 . The elevator shaft lifting construction protection operation platform according to claim 1 , wherein the lifting mechanism ( 4 ) is a scissor hydraulic lift. 9 . 9 . The elevator shaft lifting construction protection operation platform according to claim 1 , wherein hooks ( 7 ) are provided at the four corners of the upper surface of the protection platform ( 1 ). 10 .

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