A flexible lifting device with variable pitch
By designing a flexible lifting device with variable pitch, and utilizing a slide table and lifting mechanism to achieve variable pitch adjustment and angle adjustment of the sling, the problems of large space occupation and high operational risks in the storage and transfer of wires and bars are solved, thereby improving transfer efficiency and the service life of the sling.
Patent Information
- Application Number
- CN202522699948.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-19
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-19
AI Technical Summary
Wires and bars occupy a lot of space, pose high operational risks, and are inefficient during storage and transportation. Conventional clamps have limited applicability and are available in many specifications, resulting in poor applicability.
The flexible lifting device with variable pitch includes components such as a long beam, a linear slide, a bidirectional linear slide, a lifting mechanism, and a rotating upper frame. Through the coordinated action of the slide and the lifting mechanism, the variable pitch and angle adjustment of the lifting belt can be achieved, reducing the positioning accuracy requirements and friction.
It improves the efficiency of wire and bar material transfer, reduces operational difficulty and wear on lifting equipment, and ensures the stability of gripping and the service life of the sling.
Smart Images
Figure CN224942215U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lifting and hoisting equipment technology, and in particular to a flexible hoisting tool with variable pitch. Background Technology
[0002] Wire and bar materials are common building materials. When storing wire and bar materials, special storage racks are required, which take up a lot of space and the stacking height is also very high. During the transportation process, manual hanging and releasing operations are risky and inefficient. In addition, there are many specifications of wire and bar materials. Although conventional clamps can replace manual hanging and releasing, their application range is limited and the specifications of wire and bar materials that can be transported are relatively few. Utility Model Content
[0003] The purpose of this invention is to provide a flexible lifting device with variable pitch. This device is simple and reliable to operate, quick to grab and release, and has low requirements for the accuracy of the device's control and positioning, which is conducive to improving production efficiency.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a flexible lifting device with variable pitch, comprising a long beam and a lifting strap, with linear slides at the top of both ends of the long beam, mounting frames fixedly connected to the sliding seats of the linear slides, a short beam fixedly connected to the top of the mounting frames, a bidirectional linear slide on the short beam, sliding frames fixedly connected to the sliding seats at both ends of the bidirectional linear slides, a vertical beam vertically slidably connected to the sliding frames, and a lifting mechanism for driving the lifting of the device; hanging ears are provided on both sides of the mounting frames, support rings are fixedly connected to the bottom of the vertical beam, one end of the lifting strap is hung on the hanging ear on one side, and the other end of the lifting strap passes through two support rings and is hung on the hanging ear on the other side.
[0005] Optionally, it also includes a rotating upper frame, the top of which is provided with a movable pulley block. The rotating upper frame is located above the long beam, and a slewing bearing is installed between the rotating upper frame and the long beam. A rotary motor is installed on the side of the slewing bearing.
[0006] Optionally, the lifting mechanism includes a drive motor, which is fixedly connected to the sliding frame. A drive gear is fixedly connected to the output end of the drive motor, and a rack is provided on one side of the vertical beam. The drive gear meshes with the rack.
[0007] Optionally, the mounting bracket is an inverted U-shaped structure.
[0008] Optionally, a roller is rotatably connected to the support ring.
[0009] The variable-pitch flexible lifting device of this invention has the following advantages: (1) The bidirectional linear slide moves the support ring outward to open the sling, making it easy to put the sling on both ends of the wire and bar. By synchronously retracting or extending the short beam through the linear slide, the sling is placed on both ends of the wire and bar. The gripping process requires low positioning accuracy of the lifting device, reduces the difficulty of operation, and avoids the problems of easy collision and bulky mechanical rigid clamping structure.
[0010] (2) The rotating upper frame can drive the long beam to rotate horizontally, which makes it easy to adjust the angle of the sling.
[0011] (3) The roller can reduce the friction between the support ring and the sling, reduce the wear of the support ring on the sling, and improve the service life of the sling. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model.
[0013] Figure 2 This is a top view of the present invention.
[0014] Figure 3 This is a schematic diagram of the connection between the short beam and the vertical beam. Detailed Implementation
[0015] The present invention will be further described below with reference to the accompanying drawings.
[0016] like Figures 1-3 As shown, a flexible lifting device with variable pitch includes a rotating upper frame 1, a long beam 2 and a lifting belt 3. A movable pulley group 4 is provided on the top of the rotating upper frame 1. The rotating upper frame 1 is located above the long beam 2. A slewing bearing 5 is installed between the rotating upper frame 1 and the long beam 2. A rotary motor 6 is installed on the side of the slewing bearing 5. The rotary motor 6 can drive the long beam 2 to rotate horizontally, which facilitates the adjustment of the angle.
[0017] Linear slides 7 are installed at the top of both ends of the long beam 2. The driving mechanism of the linear slides 7 adopts a servo geared motor 8. Mounting brackets 9 are fixedly connected to the sliding frame 14 of the linear slides 7. The mounting brackets 9 have an inverted U-shaped structure. A short beam 10 is fixedly connected to the top of the mounting brackets 9. Lugs 11 are provided on both sides of the mounting brackets 9. The linear slides 7 on both sides can synchronously drive the two mounting brackets 9 to move closer or further away. A bidirectional linear slide 12 is installed on the short beam 10. The driving mechanism of the bidirectional linear slide 12 adopts a servo motor and a planetary reducer 13. The planetary reducer 13 is equipped with dual output shafts. Sliding brackets 14 are fixedly connected to the sliding frame 14 at both ends of the bidirectional linear slide 12. The bidirectional linear slide 12 can drive the two sliding frames 14 to move closer or further away synchronously. A vertical beam 15 is vertically slidably connected to the sliding frame 14. The sliding frame 14 is also equipped with a lifting mechanism for driving the vertical beam to move up and down. The lifting mechanism includes a drive motor, which is fixedly connected to the sliding frame 14. A drive gear 16 is fixedly connected to the output end of the drive motor. A rack 17 is provided on one side of the vertical beam 15. The drive gear 16 meshes with the rack 17. The drive motor can drive the vertical beam 15 to move vertically on the sliding frame 14.
[0018] A support ring 18 is fixedly connected to the bottom of the vertical beam 15. A roller 19 is rotatably connected to the support ring 18. One end of the sling 3 is hung on a hanging ear 11 on one side, and the other end of the sling 3 passes through two support rings 18 and is hung on a hanging ear 11 on the other side. The sling 3 is in contact with the roller 19.
[0019] When hoisting wires and bars, the linear slide 7 first moves the two short beams 10 to the outermost end of the long beam 2, and then the bidirectional linear slide 12 moves the two sliding frames 14 to the outermost end of the short beams 10. At the same time, the lifting mechanism drives the vertical beam 15 to move downward, causing the support ring 18 to move outward and downward, thereby expanding and fixing the surrounding space of the sling 3. During the expansion process, the roller 19 of the sling 3 rolls along the sling 3, reducing the friction between the support ring 18 and the sling 3, reducing the wear on the sling 3, and extending the service life of the sling 3. When the sling 3 descends to the height of the wire and bar, the short beams 10 at both ends move inward synchronously, allowing the sling 3 to pass through the ends of the wire and bar. Then, the vertical beam 15 moves inward and upward, retracting to the mounting frame 9, causing the support ring 18 to disengage from the sling 3 and not bear the load. Finally, the lifting device lifts up, hoisting the wire and bar. Under the weight of the wire and bar, the sling 3 is taut, preventing the wire and bar from falling off. It has high stability, low requirements for the positioning accuracy of the lifting device during the gripping process, reduced operation difficulty, and avoids the problems of easy collision and bulkiness of mechanical rigid clamping structures.
[0020] The embodiments described above are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the protection scope of this utility model.
Claims
1. A flexible lifting device with variable pitch, characterized in that: The device includes a long beam and a sling. Linear slides are installed at the top of both ends of the long beam. Mounting frames are fixedly connected to the sliding seats of the linear slides. Short beams are fixedly connected to the top of the mounting frames. Bi-directional linear slides are installed on the short beams. Sliding frames are fixedly connected to the sliding seats at both ends of the bi-directional linear slides. Vertical beams are vertically slidably connected to the sliding frames. A lifting mechanism for driving the lifting of multiple beams is also installed on the sliding frames. Hanging lugs are installed on both sides of the mounting frames. Support rings are fixedly connected to the bottom of the vertical beams. One end of the sling is hung on one of the hanging lugs, and the other end of the sling passes through two support rings and is hung on the other hanging lug.
2. The variable-pitch flexible lifting device as described in claim 1, characterized in that: It also includes a rotating upper frame, with a movable pulley block at the top of the rotating upper frame. The rotating upper frame is located above the long beam, and a slewing bearing is installed between the rotating upper frame and the long beam. A rotary motor is installed on the side of the slewing bearing.
3. The variable-pitch flexible lifting device as described in claim 1, characterized in that: The lifting mechanism includes a drive motor, which is fixedly connected to the sliding frame. A drive gear is fixedly connected to the output end of the drive motor. A rack is provided on one side of the vertical beam, and the drive gear meshes with the rack.
4. The variable-pitch flexible lifting device as described in claim 1, characterized in that: The mounting bracket has an inverted U-shaped structure.
5. The variable-pitch flexible lifting device as described in claim 1, characterized in that: Rollers are rotatably connected to the support ring.