A lifting and hoisting height restriction device for indoor construction

Abstract

This utility model relates to the field of lifting and hoisting height restriction technology, and discloses a lifting and hoisting height restriction device for indoor construction. It includes a fixed support, a movable support, and a hinged hydraulic rod. A drive unit is installed on the bottom side of the movable support, and its output end is connected to the lifting device via a cable. A fixed plate is provided at the end of the movable support, housing a support rod and an inclined pry bar. One end of the pry bar is equipped with a pressure sensor, and the other end has a semi-circular pressure ring and a cable groove. When the lifting device rises, the pressure sensor contacts the lifting device and sends a signal to the main control circuit board of the drive unit, controlling the stop of winding. If it does not stop in time, the pry bar is pressed and rotated, and the semi-circular pressure ring presses down, contacting and fixing the cable with the support rod to prevent excessive height. This device effectively solves the problem of the lack of an excessive height detection and control mechanism in the prior art, avoiding safety hazards associated with excessive height hoisting.

Description

Technical Field

[0001] This utility model relates to the field of lifting and hoisting height restriction technology, specifically a lifting and hoisting height restriction device for indoor construction. Background Technology

[0002] In indoor construction scenarios, lifting and hoisting operations are a very common and critical part, as they are responsible for the handling and installation of various building materials and equipment, and have a significant impact on construction efficiency and safety.

[0003] While existing lifting and hoisting devices can achieve basic lifting functions, they have significant shortcomings in preventing excessive lifting height. During lifting operations, the lack of an effective excessive height detection and control mechanism makes it difficult to stop the drive unit in time when the lifting equipment reaches a dangerous height, easily leading to excessive lifting height. Furthermore, even if the drive unit fails to stop in time in some cases, existing devices lack corresponding structures to further limit the lifting equipment's continued ascent, failing to avoid safety hazards caused by excessive lifting height. Therefore, those skilled in the art provide a lifting and hoisting height limiting device for indoor construction to solve the problems mentioned in the background art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a lifting and hoisting height limiting device for indoor construction, which solves the problem that during hoisting operations, there is a lack of effective height detection and control mechanisms, making it difficult to stop the drive unit in time when the hoisting equipment rises to a dangerous height, which easily leads to hoisting exceeding the height limit.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lifting and hoisting height restriction device for indoor construction, comprising a fixed bracket and a movable bracket, wherein the fixed bracket and the movable bracket are hinged together, a drive unit is installed on the bottom side of the movable bracket, the drive unit includes a main control circuit board, the output end of the drive unit is connected to a cable, the end of the cable away from the drive unit is connected to a lifting device, a fixed plate is provided on the side of the drive unit away from the hydraulic rod, a pulley frame is installed on the end of the movable bracket away from the hydraulic rod, a support rod is installed inside the fixed plate, a pry bar is provided on the upper side of the support rod, a wire groove is opened on the pry bar, a semi-circular pressure ring is installed on the end of the pry bar inside the fixed plate, a pressure sensor is installed on the bottom side of the end of the pry bar away from the semi-circular pressure ring, and positioning shafts are installed on both sides of the end of the pry bar adjacent to the semi-circular pressure ring.

[0006] Preferably, the fixed bracket and the movable bracket are rotatably connected by a hydraulic rod, which can be used to change the angle of the movable bracket, thereby achieving the effect of adjusting the hoisting height.

[0007] Preferably, the signal output terminal of the pressure sensor is connected to the main control circuit board in the drive unit. When the drive unit winds up the cable, the lifting device moves the object upward. As the lifting device moves upward, the top of the lifting device gradually approaches the pressure sensor at the end of the pry bar until the pressure sensor makes contact with the top of the lifting device. Then, the pressure sensor releases a signal to the main control circuit board in the drive unit, which controls the drive unit to stop the winding operation.

[0008] Preferably, the cable passes sequentially through the inside of the fixing plate and the wire groove on the pry bar, and the semi-circular pressure ring is positioned above the support rod.

[0009] Preferably, the pry bar is tilted and is rotatably engaged with the fixing plate via a positioning shaft. The drive unit winds up the cable, and the lifting device moves the item upward. As the lifting device moves upward, the top of the lifting device gradually approaches the pressure sensor at the end of the pry bar until the pressure sensor comes into contact with the top of the lifting device. Then, the pressure sensor releases a signal to the main control circuit board in the drive unit, which controls the drive unit to stop the winding operation.

[0010] Compared with the prior art, this utility model provides a lifting and hoisting height restriction device for indoor construction, which has the following beneficial effects:

[0011] Through its design, this lifting and hoisting device, consisting of a fixed support, a movable support, a drive unit, cables, and a lifting device, ensures the basic functions of hoisting operations. A pry bar is rotatably engaged within the fixed plate, with a pressure sensor at one end. When the lifting device moves upwards and comes into contact with the pressure sensor, the sensor releases a signal to the drive unit's main control circuit board, causing the drive unit to stop rewinding, effectively preventing excessive hoisting height. If the drive unit does not stop in time, one end of the pry bar continues to be pressed upwards, while the end with the semi-circular pressure ring moves downwards, pressing the cable downwards to contact the support rod, thus securing the cable and further avoiding safety hazards caused by excessive hoisting height. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a lifting and hoisting height restriction device for indoor construction provided in an embodiment of this application.

[0013] Figure 2 This is a schematic diagram of the pry bar structure in a lifting and hoisting height restriction device for indoor construction provided in an embodiment of this application.

[0014] Figure 3 This is a partial structural cross-sectional view of a lifting and hoisting height restriction device for indoor construction provided in an embodiment of this application.

[0015] In the diagram: 1. Fixed bracket; 2. Movable bracket; 3. Hydraulic rod; 4. Drive unit; 5. Cable; 6. Lifting device; 7. Fixing plate; 701. Support rod; 8. Pulley frame; 9. Pry bar; 901. Cable tray; 10. Pressure sensor; 11. Semi-circular pressure ring; 12. Positioning shaft. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] This utility model provides a technical solution: a lifting and hoisting height restriction device for indoor construction. Please refer to [link / reference]. Figure 1 , Figure 2 and Figure 3 The system includes a fixed bracket 1 and a movable bracket 2. The fixed bracket 1 and the movable bracket 2 are hinged together. A drive unit 4 is installed on the bottom side of the movable bracket 2. The drive unit 4 contains a main control circuit board. The output end of the drive unit 4 is connected to a cable 5. The end of the cable 5 away from the drive unit 4 is connected to a lifting device 6. A fixed plate 7 is provided on the side of the drive unit 4 away from the hydraulic rod 3. A pulley frame 8 is installed on the end of the movable bracket 2 away from the hydraulic rod 3. A support rod 701 is installed inside the fixed plate 7. A pry bar 9 is provided on the upper side of the support rod 701. A wire groove 901 is opened on the pry bar 9. A semi-circular pressure ring 11 is installed on the end of the pry bar 9 inside the fixed plate 7. A pressure sensor 10 is installed on the bottom side of the end of the pry bar 9 away from the semi-circular pressure ring 11. Positioning shafts 12 are installed on both sides of the end of the pry bar 9 adjacent to the semi-circular pressure ring 11.

[0018] Please see Figure 1 , Figure 2 and Figure 3A hydraulic rod 3 is rotatably connected to the inner side of the fixed bracket 1 and the movable bracket 2. This hydraulic rod 3 allows for adjustment of the angle of the movable bracket 2, thereby adjusting the hoisting height. The signal output terminal of the pressure sensor 10 is connected to the main control circuit board within the drive unit 4. The drive unit 4 retracts the cable 5, causing the lifting device 6 to lift the object upwards. As the lifting device 6 rises, its top gradually approaches the pressure sensor 10 at the end of the pry bar 9. Once the pressure sensor 10 makes contact with the top of the lifting device 6, it releases a signal to the main control circuit board within the drive unit 4, which then controls the drive. Unit 4 stops winding. Cable 5 passes through the inside of the fixing plate 7 and the wire groove 901 on the pry bar 9 in sequence. The semi-circular pressure ring 11 is set above the support rod 701. The pry bar 9 is set at an angle and is rotated and locked to the fixing plate 7 through the positioning shaft 12. The drive unit 4 winds up the cable 5. The lifting device 6 moves the item upward. As the lifting device 6 moves upward, the top of the lifting device 6 gradually approaches the pressure sensor 10 at the end of the pry bar 9 until the pressure sensor 10 is pressed and contacted with the top of the lifting device 6. The pressure sensor 10 releases a signal to the main control circuit board in the drive unit 4, and the main control circuit board controls the drive unit 4 to stop winding.

[0019] The working principle of this device is as follows: This lifting and hoisting device is composed of a fixed support 1 and a movable support 2 hinged together. A hydraulic rod 3 is connected to one side of the hinge part between the fixed support 1 and the movable support 2. The angle of the movable support 2 can be changed through the hydraulic rod 3, thereby achieving the effect of adjusting the hoisting height.

[0020] A drive unit 4 is installed on the bottom side of the movable support 2. The output end of the drive unit 4 is connected to a cable 5. The drive unit 4 can retract and extend the cable 5. A fixing plate 7 is provided on the side of the drive unit 4 away from the hydraulic rod 3. The cable 5 passes through the middle cavity of the fixing plate 7 and overlaps with the pulley frame 8 at the end of the movable support 2. A lifting device 6 is connected to the end of the cable 5 below the pulley frame 8, which ensures the basic function of lifting operation.

[0021] A support rod 701 is longitudinally installed inside the fixed plate 7. A pry bar 9 is provided on the upper side of the support rod 701. The pry bar 9 is inclined and has a wire groove 901 inside for the cable 5 to pass through. A semi-circular pressure ring 11 is installed at the end of the pry bar 9 inside the fixed plate 7. The semi-circular pressure ring 11 is located above the support rod 701, and the cable 5 is located between the support rod 701 and the semi-circular pressure ring 11 inside the fixed plate 7. Positioning shafts 12 are provided on both sides of the end of the pry bar 9 adjacent to the semi-circular pressure ring 11 and are rotatably engaged with the fixed plate 7. A pressure sensor 10 is installed on the lower side of the end of the pry bar 9 facing the lifting device 6. When the drive unit 4, cable 5 and lifting device 6 work together to lift the item, as the drive unit 4 winds up the cable 5, the lifting device 6 moves the item upward. As the lifting device 6 moves upward, the top of the lifting device 6 gradually approaches the pressure sensor 10 at the end of the pry bar 9 until the pressure sensor 10 is pressed and contacts the top of the lifting device 6. Then, the pressure sensor 10 releases a signal to the main control circuit board in the drive unit 4, which controls the drive unit 4 to stop the winding operation.

[0022] If the drive unit 4 fails to stop working in time, as the lifting device 6 continues to move upward, the lifting device 6 will press down on the pry bar 9. Since one end of the pry bar 9 is rotated and locked to the fixing plate 7 through the positioning shaft 12, it is in the shape of a pry bar 9. As the end of the pry bar 9 facing the lifting device 6 is pressed up, the end of the pry bar 9 with the semi-circular pressure ring 11 moves down. As the semi-circular pressure ring 11 moves down, the cable 5 is squeezed downward by the semi-circular pressure ring 11 and contacts the support rod 701, thereby achieving the effect of squeezing and fixing the cable 5 and avoiding excessive lifting height.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] In this document, unless otherwise expressly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lifting and hoisting height restriction device for indoor construction, comprising a fixed support (1) and a movable support (2), wherein the fixed support (1) and the movable support (2) are hinged together, characterized in that: A drive unit (4) is installed on the bottom side of the movable bracket (2). The drive unit (4) includes a main control circuit board. The output end of the drive unit (4) is connected to a cable (5). The end of the cable (5) away from the drive unit (4) is connected to a lifting device (6). A fixing plate (7) is provided on the side of the drive unit (4) away from the hydraulic rod (3). A pulley frame (8) is installed on the end of the movable bracket (2) away from the hydraulic rod (3). A support rod (701) is installed in the fixing plate (7). A pry bar (9) is provided on the upper side of the support rod (701). A wire groove (901) is opened on the pry bar (9). A semi-circular pressure ring (11) is installed on the end of the pry bar (9) inside the fixing plate (7). A pressure sensor (10) is installed on the bottom side of the end of the pry bar (9) away from the semi-circular pressure ring (11). Positioning shafts (12) are installed on both sides of the end of the pry bar (9) adjacent to the semi-circular pressure ring (11).

2. The lifting and hoisting height restriction device for indoor construction according to claim 1, characterized in that: The fixed bracket (1) and the movable bracket (2) are rotatably connected by a hydraulic rod (3).

3. The lifting and hoisting height restriction device for indoor construction according to claim 1, characterized in that: The cable (5) passes through the inside of the fixing plate (7) and the cable groove (901) on the pry bar (9) in sequence.

4. The lifting and hoisting height restriction device for indoor construction according to claim 1, characterized in that: The semi-circular pressure ring (11) is positioned above the support rod (701).

5. A lifting and hoisting height restriction device for indoor construction according to claim 1, characterized in that: The pry bar (9) is inclined and is rotatably engaged with the fixing plate (7) through the positioning shaft (12).

6. The lifting and hoisting height restriction device for indoor construction according to claim 1, characterized in that: The signal output terminal of the pressure sensor (10) is connected to the main control circuit board in the drive unit (4).

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