Automatic unhooking device for steel reinforcement cage lifting device
By designing an automatic unhooking device for the steel reinforcement cage lifting tool in conjunction with laser sensors and pressure sensors and locking structure, the safety hazards and swaying problems of manual operation during the lifting process of the steel reinforcement cage were solved, realizing automatic unhooking and positioning guidance, thus improving lifting efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOHYDRO BUREAU 5
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-19
AI Technical Summary
The process of hoisting steel reinforcement cages requires manual hooking and unhooking, which poses safety hazards and has low hoisting efficiency. Traditional hooks lack positioning and guiding functions, which makes the steel reinforcement cages prone to swaying.
Design an automatic unhooking device for a rebar cage lifting tool. The device uses a laser sensor and a pressure sensor in conjunction with a locking structure to achieve automatic unhooking and positioning guidance of the lifting tool. The laser sensor detects the position of the rebar and controls the locking structure to lock or unlock, thus preventing swaying.
It achieves automatic unhooking of the lifting equipment after hoisting, eliminating the need for manual operation, thus improving safety and hoisting efficiency, and prevents the steel reinforcement cage from swaying through the positioning and guiding function.
Smart Images
Figure CN224377451U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hoisting tools technology, and more specifically, to an automatic unhooking device for a steel reinforcement cage hoist. Background Technology
[0002] Currently, the hoisting of steel reinforcement cages is carried out using the hooks of lifting devices. Therefore, manual hooking and unhooking are required before and after hoisting. This means that when working at height, operators need to climb above the components to unhook them, which poses a significant safety hazard. Furthermore, the timing of unhooking depends on manual judgment, which can easily lead to premature unhooking and deformation of the components. In addition, traditional hooks lack positioning and guiding functions, making the steel reinforcement cage prone to swaying during hoisting. Overall, the operation efficiency is low, affecting the construction progress.
[0003] In view of the above, this application is hereby submitted. Utility Model Content
[0004] The technical problem this utility model aims to solve is that the current method of hoisting steel reinforcement cages uses hooks, which requires manual hooking and unhooking, posing significant safety hazards, easily causing component damage, and resulting in low construction efficiency. The purpose is to provide an automatic unhooking device for steel reinforcement cage hoists, which can not only automatically unhook the hoisting device after hoisting without manual operation, but also has a positioning and guiding function to prevent the steel reinforcement cage from swaying during hoisting.
[0005] This utility model is achieved through the following technical solution:
[0006] An automatic unhooking device for a steel reinforcement cage lifting tool includes a lifting ring, and two vertical and parallel lifting plates are installed below the lifting ring. The lower ends of the two lifting plates form a strip-shaped opening, which is used for the steel reinforcement cage to extend between the two lifting plates.
[0007] A laser sensor is installed between the two suspended platforms. The laser sensor includes a laser emitter and a laser receiver, which are respectively installed on the opposite surfaces of the two suspended platforms.
[0008] A locking structure is provided above the laser sensor between the two hanging plates;
[0009] A pressure sensor is installed between the tops of the two suspended platforms;
[0010] The hoisting process begins as the hoisting platform moves downwards, allowing the steel reinforcement cage to enter through the opening. A laser sensor transmits a signal to the controller, which then drives a locking mechanism to secure the steel reinforcement cage between the two hoisting platforms. Once the hoisting is complete, the hoisting platform moves downwards and contacts a pressure sensor. The pressure sensor transmits a signal to the controller, which then drives the locking mechanism to open, allowing the steel reinforcement cage to exit the two hoisting platforms.
[0011] The automatic unhooking device of this utility model can not only automatically unhook the lifting equipment after the hoisting is completed without manual operation, but also has a positioning and guiding function to prevent the steel reinforcement cage from swaying during the hoisting process.
[0012] In use, the automatic unhooking device for the lifting device of this utility model is first connected to the sling of the crane via a lifting ring. Then, the crane moves the lifting device above the steel reinforcement cage and lowers it, allowing the pre-set sleeve of the steel reinforcement cage to enter through the opening at the bottom of the two hanging plates. The lifting device continues to be lowered. After the pre-set sleeve of the steel reinforcement cage moves to the position of the laser sensor, it blocks the laser emitted by the laser emitter, and the laser receiver cannot receive the laser signal. When the lifting device continues to be lowered until the pre-set sleeve of the steel reinforcement cage leaves the position of the laser sensor, the laser receiver receives the laser signal again, and the controller drives the locking structure to lock and fix the pre-set sleeve of the steel reinforcement cage between the two hanging plates. After completion, the crane is started to lift the steel reinforcement cage to the preset position and lower the lifting device. When the bottom of the steel reinforcement cage contacts the installation platform, the movement stops. At this time, the lifting device continues to be lowered until the pre-set sleeve of the steel reinforcement cage contacts the pressure sensor set on the top of the two hanging plates, thereby triggering the unlocking signal. The controller drives the locking structure to open, pulls up the lifting device, and the pre-set sleeve of the steel reinforcement cage disengages from the hanging plates, completing the automatic unhooking of the lifting device.
[0013] In addition, this application uses two parallel hanging plates to hoist the steel reinforcement cage. In this way, during the hoisting process, the two hanging plates can limit the movement of the pre-set sleeve and prevent the pre-set sleeve from swinging back and forth in the horizontal direction.
[0014] In one specific embodiment, both hanging plates are provided with coaxial lock holes. A hydraulic drive device is installed on the outer side of one of the hanging plates, and a locking rod coaxial with the lock hole is installed on the hydraulic drive device. The controller activates the hydraulic drive device to push the locking rod horizontally into the lock hole of the other hanging plate, forming a locking structure.
[0015] The locking structure of this invention employs a lock hole and lock rod structure. When the pre-set sleeve of the reinforcing steel cage moves above the lock hole, the lock rod, under the action of the hydraulic drive device, inserts into the lock holes of the two lifting plates, thereby locking the outlets of the two lifting plates. During hoisting, the lock rod contacts the pre-set sleeve of the reinforcing steel cage to provide an upward hoisting force. The hydraulic drive device can be a hydraulic rod.
[0016] In one specific embodiment, each hanging plate is provided with two parallel lock holes, and two lock rods are also provided.
[0017] This utility model improves hoisting stability by setting two locking rods side by side, increasing the contact points with the pre-set sleeve of the steel reinforcement cage.
[0018] In one specific embodiment, the laser sensor is installed on top of the keyhole, thus ensuring that the locking rod is locked only after the preset sleeve of the steel reinforcement cage has passed through the keyhole.
[0019] In one specific embodiment, guide plates are installed at the lower ends of both hanging plates, and the lower ends of the two guide plates are inclined outward in a direction that moves away from each other.
[0020] This utility model incorporates guide plates, with two guide plates forming a bottom-up structure. This allows the pre-set sleeve to quickly and accurately enter between the two guide plates during the lowering process of the lifting device.
[0021] In one specific embodiment, multiple support balance bars are arranged along the circumferential direction on the outside of the suspended platform. The upper end of the support balance bar is installed on the lifting ring, and the lower end is inclined to the outside away from the suspended platform.
[0022] This utility model is equipped with multiple support balance bars, which can play a role in balancing the stability of the lifting device during the hoisting process. When the lifting device is not in use, the support balance bars can be used as legs for placing the lifting device.
[0023] In one specific embodiment, the inner wall of the lock hole is covered with a rubber layer, and the inner diameter of the lock hole matches the outer diameter of the lock rod. By setting a wear-resistant rubber layer, wear between the lock hole and the lock rod can be avoided.
[0024] In one specific embodiment, a fixing block is provided around the locking rod and the hydraulic drive device, and the hydraulic drive device is fixedly mounted on the fixing block.
[0025] In one specific embodiment, the guide plate has an arc-shaped structure, which can prevent scratches on the surface of the preset sleeve during the swaying process of the lifting device being lowered.
[0026] In one specific embodiment, the guide plate has a structure that is larger at the top and smaller at the bottom, and the length of the guide plate gradually decreases from top to bottom, thereby reducing the weight of the guide plate.
[0027] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0028] 1. The automatic unhooking device for the rebar cage lifting tool provided in this utility model embodiment can not only achieve automatic unhooking of the lifting tool after the lifting is completed without manual operation, but also has a positioning and guiding function to prevent the rebar cage from swaying during the lifting process;
[0029] 2. The present invention provides an automatic unhooking device for a steel reinforcement cage lifting tool. The locking structure adopts a lock hole and lock rod structure. When the preset sleeve of the steel reinforcement cage moves to the top of the lock hole, the lock rod is inserted into the lock hole of the two lifting plates under the action of the hydraulic drive device, thereby locking the outlet of the two lifting plates. When lifting, the lock rod contacts the preset sleeve of the steel reinforcement cage to provide an upward lifting force.
[0030] 3. The present invention provides an automatic unhooking device for a steel reinforcement cage lifting device. By setting guide plates, the two guide plates form a structure with the lower part larger than the upper part. In this way, during the lowering process of the lifting device, the pre-set sleeve can be quickly and accurately entered between the two guide plates through the guide plates. Attached Figure Description
[0031] To more clearly illustrate the technical solutions of the exemplary embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1 A schematic diagram of the automatic unhooking device for lifting gear provided in an embodiment of this utility model;
[0033] Figure 2 This is a side view of the hanging platform structure provided in an embodiment of the present utility model;
[0034] Figure 3 A schematic diagram of the automatic unhooking device for lifting equipment provided in an embodiment of this utility model.
[0035] The attached diagram shows the markings and corresponding component names:
[0036] 1-Lifting ring, 2-Lifting plate, 3-Laser sensor, 4-Pressure sensor, 5-Lock hole, 6-Lock rod, 7-Hydraulic drive device, 8-Guide plate, 9-Support balance bar, 10-Fixing block. Detailed Implementation
[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.
[0038] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other embodiments, well-known structures are not specifically described in order to avoid obscuring the present invention.
[0039] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0040] In the description of this utility model, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.
[0041] Example 1
[0042] like Figures 1-3 As shown in the figure, an automatic unhooking device for a steel reinforcement cage lifting tool provided in this embodiment of the present utility model includes a lifting ring 1. Two vertical and parallel lifting plates 2 are installed below the lifting ring 1. The lower ends of the two lifting plates 2 form a strip-shaped opening, which is used for the steel reinforcement cage to extend into the space between the two lifting plates 2.
[0043] A laser sensor 3 is provided between the two hanging plates 2. The laser sensor 3 includes a laser emitter and a laser receiver, which are respectively installed on the opposite surfaces of the two hanging plates 2.
[0044] A locking structure is provided above the laser sensor 3 between the two hanging plates 2;
[0045] A pressure sensor 4 is installed between the tops of the two hanging plates 2;
[0046] The hoisting begins, and the hoisting plate 2 moves downward to allow the steel reinforcement cage to enter through the opening. The laser sensor transmits a signal to the controller, which drives the locking structure to fix the steel reinforcement cage between the two hoisting plates 2. Once the hoisting is complete, the hoisting plate 2 moves downward and contacts the pressure sensor 4. The pressure sensor 4 transmits a signal to the controller, which drives the locking structure to open, and the steel reinforcement cage exits from the two hoisting plates 2.
[0047] The automatic unhooking device of this utility model can not only automatically unhook the lifting equipment after the hoisting is completed without manual operation, but also has a positioning and guiding function to prevent the steel reinforcement cage from swaying during the hoisting process.
[0048] In use, the automatic unhooking device for the lifting device of this utility model is first connected to the sling of the crane via a lifting ring. Then, the crane moves the lifting device above the steel reinforcement cage and lowers it, allowing the pre-set sleeve of the steel reinforcement cage to enter through the opening at the bottom of the two hanging plates. The lifting device continues to be lowered. After the pre-set sleeve of the steel reinforcement cage moves to the position of the laser sensor, it blocks the laser emitted by the laser emitter, and the laser receiver cannot receive the laser signal. When the lifting device continues to be lowered until the pre-set sleeve of the steel reinforcement cage leaves the position of the laser sensor, the laser receiver receives the laser signal again, and the controller drives the locking structure to lock and fix the pre-set sleeve of the steel reinforcement cage between the two hanging plates. After completion, the crane is started to lift the steel reinforcement cage to the preset position and lower the lifting device. When the bottom of the steel reinforcement cage contacts the installation platform, the movement stops. At this time, the lifting device continues to be lowered until the pre-set sleeve of the steel reinforcement cage contacts the pressure sensor set on the top of the two hanging plates, thereby triggering the unlocking signal. The controller drives the locking structure to open, pulls up the lifting device, and the pre-set sleeve of the steel reinforcement cage disengages from the hanging plates, completing the automatic unhooking of the lifting device.
[0049] In addition, this application uses two parallel hanging plates to hoist the steel reinforcement cage. In this way, during the hoisting process, the two hanging plates can limit the movement of the pre-set sleeve and prevent the pre-set sleeve from swinging back and forth in the horizontal direction.
[0050] In one specific embodiment, both hanging plates 2 are provided with coaxial locking holes 5. A hydraulic drive device 7 is installed on the outer side of one of the hanging plates 2. A locking rod 6 coaxial with the locking hole 5 is installed on the hydraulic drive device 7. The controller activates the hydraulic drive device 7 to push the locking rod 6 horizontally into the locking hole 5 of the other hanging plate 2, forming a locking structure.
[0051] The locking structure of this invention employs a lock hole and lock rod structure. When the pre-set sleeve of the reinforcing steel cage moves above the lock hole, the lock rod, under the action of the hydraulic drive device, inserts into the lock holes of the two lifting plates, thereby locking the outlets of the two lifting plates. During hoisting, the lock rod contacts the pre-set sleeve of the reinforcing steel cage to provide an upward hoisting force. The hydraulic drive device can be a hydraulic rod.
[0052] In one specific embodiment, each hanging plate 2 is provided with two parallel locking holes 5, and two locking rods 6 are also provided.
[0053] This utility model improves hoisting stability by setting two locking rods side by side, increasing the contact points with the pre-set sleeve of the steel reinforcement cage.
[0054] In one specific embodiment, the laser sensor is installed on the top of the lock hole 5, thus ensuring that the locking rod is locked only after the preset sleeve of the steel reinforcement cage passes through the lock hole.
[0055] In one specific embodiment, guide plates 8 are installed at the lower ends of both hanging plates 2, and the lower ends of the two guide plates 8 are inclined outward in a direction that moves away from each other.
[0056] This utility model incorporates guide plates, with two guide plates forming a bottom-up structure. This allows the pre-set sleeve to quickly and accurately enter between the two guide plates during the lowering process of the lifting device.
[0057] In one specific embodiment, multiple support balance bars 9 are arranged along the circumferential direction on the outside of the hanging plate 2. The upper end of the support balance bar 9 is installed on the hanging ring 1, and the lower end is inclined to the outside away from the hanging plate 2.
[0058] This utility model is equipped with multiple support balance bars, which can play a role in balancing the stability of the lifting device during the hoisting process. When the lifting device is not in use, the support balance bars can be used as legs for placing the lifting device.
[0059] In one specific embodiment, the inner wall of the lock hole 5 is covered with a rubber layer, and the inner diameter of the lock hole 5 matches the outer diameter of the lock rod 6. By setting a wear-resistant rubber layer, wear between the lock hole and the lock rod can be avoided.
[0060] In one specific embodiment, a fixing block 10 is provided around the locking rod 6 and the hydraulic drive device 7, and the hydraulic drive device 7 is fixedly installed on the fixing block 10.
[0061] In one specific embodiment, the guide plate 8 has an arc-shaped structure, which can prevent scratches on the surface of the preset sleeve during the swaying process of the lifting device being lowered.
[0062] In one specific embodiment, the guide plate 8 has a structure that is larger at the top and smaller at the bottom, and the length of the guide plate 8 gradually decreases from top to bottom, thereby reducing the weight of the guide plate.
[0063] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. An automatic unhooking device for a steel reinforcement cage lifting tool, characterized in that, Includes a lifting ring (1), below which are two vertical and parallel hanging plates (2), the lower ends of the two hanging plates (2) form a strip opening, the opening is used for the steel reinforcement skeleton to extend between the two hanging plates (2); A laser sensor (3) is provided between the two hanging plates (2). The laser sensor (3) includes a laser emitter and a laser receiver, which are respectively installed on the opposite surfaces of the two hanging plates (2). A locking structure is provided above the laser sensor (3) between the two hanging plates (2); A pressure sensor (4) is installed between the tops of the two hanging plates (2); When hoisting begins, the hoisting plate (2) moves downward to allow the steel reinforcement skeleton to enter through the opening. The laser sensor transmits a signal to the controller, and the controller drives the locking structure to fix the steel reinforcement skeleton between the two hoisting plates (2). When hoisting is completed, the hoisting plate (2) moves downward to contact the pressure sensor (4). The pressure sensor (4) transmits a signal to the controller, and the controller drives the locking structure to open, and the steel reinforcement skeleton exits from the two hoisting plates (2).
2. The automatic unhooking device for a steel reinforcement cage lifting tool according to claim 1, characterized in that, Both hanging plates (2) have coaxial lock holes (5). A hydraulic drive device (7) is installed on the outside of one of the hanging plates (2). A locking rod (6) coaxial with the lock hole (5) is installed on the hydraulic drive device (7). The controller starts the hydraulic drive device (7) so that the locking rod (6) is pushed horizontally from the lock hole (5) of one hanging plate (2) into the lock hole (5) of the other hanging plate (2) to form a locking structure.
3. The automatic unhooking device for a steel reinforcement cage lifting tool according to claim 2, characterized in that, Each hanging plate (2) is provided with two parallel lock holes (5), and the lock rod (6) is also provided with two.
4. The automatic unhooking device for a steel reinforcement cage lifting tool according to claim 2, characterized in that, The laser sensor is mounted on top of the keyhole (5).
5. The automatic unhooking device for a steel reinforcement cage lifting tool according to claim 1, characterized in that, Guide plates (8) are installed at the lower ends of both hanging plates (2), and the lower ends of the two guide plates (8) are inclined outward in a direction away from each other.
6. The automatic unhooking device for a steel reinforcement cage lifting tool according to claim 1, characterized in that, Multiple support balance bars (9) are provided on the outside of the hanging plate (2) along the circumferential direction. The upper end of the support balance bar (9) is installed on the hanging ring (1), and the lower end is inclined to the outside away from the hanging plate (2).
7. The automatic unhooking device for a steel reinforcement cage lifting tool according to claim 2, characterized in that, The inner wall of the lock hole (5) is covered with a rubber layer, and the inner diameter of the lock hole (5) matches the outer diameter of the lock rod (6).
8. The automatic unhooking device for a steel reinforcement cage lifting tool according to claim 2, characterized in that, The locking rod (6) and the hydraulic drive device (7) are surrounded by fixing blocks (10), and the hydraulic drive device (7) is fixedly installed on the fixing blocks (10).
9. The automatic unhooking device for a steel reinforcement cage lifting tool according to claim 5, characterized in that, The guide plate (8) has an arc-shaped structure.
10. The automatic unhooking device for a steel reinforcement cage lifting tool according to claim 9, characterized in that, The guide plate (8) has a structure that is larger at the top and smaller at the bottom, and the length of the guide plate (8) gradually decreases from top to bottom.