Hydraulic hoist lower anchor point double-lifting lug conversion device

Abstract

The utility model relates to hydraulic pressure hoist equipment technical field discloses a hydraulic hoist lower anchor point double lifting lug conversion device, including the support, the outside fixed connection of support has the lower anchor box, the inside detachable connection of lower anchor box has the lower anchor disc, the outside fixed connection of lower anchor disc has the strand, the outside fixed connection of support has the lug plate, the outside of lower anchor box is provided with the positioning mechanism, the outside fixed connection of lug plate has the anti -drop mechanism, the positioning mechanism includes the hole, the outside of hole is arranged outside lower anchor disc, the inside slide connection of lower anchor box has the limit component, in the utility model, through putting the fixed bolt into the slotted hole, rotates fixed bolt and makes bolt drive spring washer to move, then makes the connecting rod in fixed hole to slide, thereby realizes the limit block and connects the lower anchor disc and lower anchor box and fixes, accurately positions the relative position of both.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic lifting equipment technology, and in particular to a double lifting lug conversion device for the lower anchor point of a hydraulic lifter. Background Technology

[0002] In bridge segment assembly, vertical lifting of large equipment, and other projects, situations often arise where the spacing between the double lifting lugs is too small to be directly connected with double jacks. In such cases, a hydraulic lifter with a lower anchor point double lifting lug conversion device can be used. The reliable connection and load transfer of the double lifting lugs are suitable for the synchronous lifting of heavy components in space-constrained environments, the segmented hoisting of super high-rise structures, and other scenarios where double lifting lugs are required to work together to bear loads.

[0003] In some existing technologies, when the distance between the two lifting lugs is small, it is difficult to connect them separately with two jacks. Generally, a spreader beam is used as the connecting carrier between the steel strand and the equipment hoisting wire rope. In the hoisting of large equipment in the construction of large thermal power plants and nuclear power plants, such as generator stators and boiler drums, similar methods are often used. Traditional hydraulic lifters are mostly placed directly on top of the lifting support and usually perform vertical lifting operations.

[0004] However, in actual use, it is impossible to connect and fix the lower anchor plate and the lower anchor box, and it is difficult to accurately position their relative positions. This leads to positional deviations during installation, affecting the overall connection accuracy of the device. In the process of load transfer, inaccurate positioning causes uneven force distribution, reducing the stability and reliability of the device. To address the above problems, a double-lug conversion device for the lower anchor point of a hydraulic lifter is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a hydraulic lifter lower anchor point double lug conversion device, which aims to improve the problem that some existing lower anchor point double lug conversion devices cannot achieve accurate positioning.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A hydraulic lifter lower anchor point double lifting lug conversion device includes a bracket, a lower anchor box fixedly connected to the outside of the bracket, a lower anchor plate detachably connected inside the lower anchor box, a steel strand fixedly connected to the outside of the lower anchor plate, a lifting lug plate fixedly connected to the outside of the bracket, a positioning mechanism provided outside the lower anchor box, and an anti-falling mechanism fixedly connected to the outside of the lifting lug plate.

[0008] The positioning mechanism includes a hole, the outside of which is located on the outside of the lower anchor plate. A limit component is slidably connected inside the lower anchor box. Multiple limit blocks are detachably connected to the outside of the lower anchor box. The limit blocks have slotted holes on their outside. Multiple fixing bolts are threaded to the bottom of the lower anchor box. Spring washers are fixedly connected to the outside of the fixing bolts. Limit rods are fixedly connected to the outside of the fixing bolts. Multiple lifting lug plates are fixedly connected to the outside of the lifting lug plate. Multiple stiffening ribs are fixedly connected to the outside of the lifting lug plate.

[0009] As a further description of the above technical solution:

[0010] The limiting component includes a connecting rod, which is fixedly connected to the outside of the limiting block. The lower anchor plate has multiple fixing holes on its outside, and the connecting rod is slidably connected to the outside of the fixing holes.

[0011] As a further description of the above technical solution:

[0012] The anti-fall-off mechanism includes a slide groove, the outside of which is disposed on the outside of the lifting lug plate, and a plurality of sliders are slidably connected to the outside of the slide groove;

[0013] As a further description of the above technical solution:

[0014] The slider is externally fixedly connected to multiple support rods, and the support rods are externally fixedly connected to the outside of the bracket.

[0015] As a further description of the above technical solution:

[0016] The slider is externally fixedly connected to multiple buffer rods, and buffer springs are sleeved on the outside of the buffer rods;

[0017] As a further description of the above technical solution:

[0018] The fixing bolt is externally fixedly connected to the outside of the limiting rod, and the limiting rod is externally slidably connected to the inside of the slotted hole;

[0019] As a further description of the above technical solution:

[0020] The slider is slidably connected to the outside of the groove, and the support rod is fixedly connected to the outside of the slider.

[0021] As a further description of the above technical solution:

[0022] The external lug plate is fixedly connected to the outside of the bracket, and the external lug plate is fixedly connected to the outside of the stiffening rib.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, by placing the fixing bolt into the slotted hole and rotating the fixing bolt, the bolt drives the spring washer to move, causing the limiting rod to slide in the slotted hole, and then causing the connecting rod to slide in the fixing hole. This achieves the connection and fixation of the lower anchor plate and the lower anchor box by the limiting block, accurately positioning the relative positions of the two, ensuring the anchoring accuracy of the hydraulic lifter, facilitating disassembly and assembly, making it easy to maintain and replace the device, dispersing local stress, and improving the overall safety of the device.

[0025] 2. In this utility model, the slider slides outside the groove, causing the slider to drive the buffer rod to move, which in turn causes the buffer spring to move, thereby preventing the lifting lug from falling off. In conjunction with the buffer spring, the impact energy is absorbed during braking, reducing the damage of vibration to the connecting parts. At the same time, the limiting structure restricts the displacement range, preventing the parts from falling off due to overload, and ensuring the safety and reliability of the lifting process. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a hydraulic lifter lower anchor point double lifting lug conversion device proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the steel strand structure of a double-lug conversion device for the lower anchor point of a hydraulic lifter proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the lifting lug plate of the double lifting lug conversion device for the lower anchor point of a hydraulic lifter proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the lower anchor plate of a hydraulic lifter lower anchor point double lifting lug conversion device proposed in this utility model;

[0030] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0031] Figure 6 for Figure 3 Enlarged view of point B in the middle.

[0032] Legend:

[0033] 1. Bracket; 2. Lower anchor box; 3. Lower anchor plate; 4. Steel strand; 5. Lifting lug plate; 6. Lifting lug plate; 7. Stiffening rib; 8. Hole; 9. Fixing hole; 10. Limiting block; 11. Connecting rod; 12. Slotted hole; 13. Fixing bolt; 14. Spring washer; 15. Limiting rod; 16. Slide groove; 17. Sliding block; 18. Support rod; 19. Buffer rod; 20. Buffer spring. Detailed Implementation

[0034] 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.

[0035] Reference Figure 1 , Figure 2 , Figure 5 This utility model provides an embodiment of a hydraulic lifter with a double-ear conversion device for the lower anchor point, including a bracket 1. A lower anchor box 2 is fixedly connected to the outside of the bracket 1. The lower anchor box 2 is a rectangular box with an open top. The walls of the box are thickened, and the inside forms a regular accommodating space for installing core components. A lower anchor plate 3 is detachably connected inside the lower anchor box 2. The lower anchor plate 3 is a circular metal plate with tapered enlarged holes evenly distributed on its surface in a specific circumferential array for threading steel strands 4, which facilitates the installation and fixing of steel strands 4. A steel strand 4 is fixedly connected to the outside of the lower anchor plate 3. The steel strand 4 is made of multiple strands of steel wire spirally twisted together and serves as a key load transfer component in the lifting operation. A lifting ear plate 5 is fixedly connected to the outside of the bracket 1. The lower anchor box 2 and the lifting ear are symmetrically distributed on both sides below the lifting point, and the lifting ear and the anchor point are distributed in an isosceles triangle.

[0036] The lower anchor box 2 is provided with a positioning mechanism on its exterior, and the lifting lug 5 is fixedly connected with an anti-dropping mechanism on its exterior. The positioning mechanism includes holes 8, which are regularly circular and evenly distributed along the outer edge of the lower anchor plate 3, corresponding to the internal structure of the lower anchor box 2. The holes 8 are located on the exterior of the lower anchor plate 3. The interior of the lower anchor box 2 is slidably connected with a limit component. The exterior of the lower anchor box 2 is detachably connected with multiple limit blocks 10. The exterior of the limit blocks 10 is provided with slotted holes 12. The bottom of the lower anchor box 2 is threadedly connected with multiple fixing bolts 13. Each fixing bolt 13 has a spring washer 14 fitted under its nut. The pre-tightening force generated by the elastic deformation of the spring washer 14 effectively prevents the bolts from loosening in a vibration environment. The exterior of the fixing bolts 13 is fixedly connected with spring washers 14. The exterior of the fixing bolts 13 is fixedly connected with limit rods 15. The limit rods 15 extend to the lower anchor plate 3 and cooperate with the limit groove reserved in the lower anchor plate 3 to limit the displacement of the lower anchor plate 3 in the vertical direction.

[0037] The external fixed connection of the lifting lug plate 5 is provided with multiple lifting lug plates 6, and the external fixed connection of the lifting lug plate 5 is provided with multiple stiffening ribs 7. The stiffening ribs 7 are set perpendicular to the lifting lug plate 5 to further improve the structural stability of the lifting lug plate 5 under heavy load conditions. The limiting component includes a connecting rod 11, which can slide flexibly in the fixing hole 9. When the limiting block 10 is fixed by bolts, the connecting rod 11 is embedded in the fixing hole 9 to achieve precise positioning and stable fixation of the lower anchor plate 3. The external fixed connection of the connecting rod 11 is on the outside of the limiting block 10. The lower anchor plate 3 has multiple fixing holes 9 on its outside, and the external sliding connection of the connecting rod 11 is on the outside of the fixing holes 9.

[0038] Reference Figure 3 , Figure 4 , Figure 6 The anti-fall-off mechanism includes a slide groove 16, which is long and longitudinally arranged along the outer edge of the lifting lug plate 5. Its cross-section is U-shaped, forming a track structure with raised sides and a recessed middle, providing sliding guidance for the slider 17. The outside of the slide groove 16 is set outside the lifting lug plate 5. Multiple sliders 17 are slidably connected to the outside of the slide groove 16. The sliders 17 are rectangular block structures that are adapted to the cross-sectional shape of the slide groove 16 and can slide closely against the inner wall of the track. Multiple support rods 18 are fixedly connected to the outside of the sliders 17. The support rods 18 are cylindrical, with one end firmly connected to the sliders 17 by welding, and the other end extending to the bracket 1 and fixed to a specific connection point of the bracket 1 by bolts, forming a stable triangular support system, enhancing the stability of the sliders 17 during the sliding process and preventing lateral displacement. The support rods 18 are fixedly connected to the outside of the bracket 1, and multiple buffer rods 19 are fixedly connected to the outside of the sliders 17.

[0039] A buffer spring 20 is fitted around the buffer rod 19. One end of the buffer spring 20 is tightly pressed against the side wall of the slider 17, and the other end is fixed to the pre-set limiting protrusion on the outside of the lifting lug plate 5. When the device is subjected to impact or vibration during hoisting, the buffer rod 19 can slide along the axial direction, causing the buffer spring 20 to compress or extend. The impact force is absorbed by the elastic deformation of the spring, preventing the connecting parts from loosening and falling off due to excessive instantaneous force. The fixing bolt 13 is externally fixedly connected to the outside of the limiting rod 15. The limiting rod 15 is externally slidably connected to the inside of the slotted hole 12. The slider 17 is externally slidably connected to the outside of the slide groove 16. The support rod 18 is externally fixedly connected to the outside of the slider 17. The lifting lug plate 5 is externally fixedly connected to the outside of the bracket 1. The lifting lug plate 5 is externally fixedly connected to the outside of the stiffening rib 7.

[0040] Working principle: The hole 8 corresponds to the internal structure of the lower anchor box 2. The connecting rod 11 of the limiting component is embedded in the fixing hole 9 of the lower anchor plate 3, so that the limiting block 10 is connected to the lower anchor box 2 by bolts. The limiting rod 15 slides inside the slotted hole 12. Then, the fixing bolt 13 with spring washer 14 is tightened through the bottom of the lower anchor box 2. The lower anchor plate 3 is constrained in the vertical direction by the limiting rod 15 and the limiting groove, and accurately positioned in the horizontal direction by the connecting rod 11 and the fixing hole 9. Thus, the limiting block 10 connects and fixes the lower anchor plate 3 and the lower anchor box 2, accurately positioning their relative positions.

[0041] The slide groove 16 is longitudinally arranged along the outer side of the lifting lug plate 5, so that the slider 17 slides against the inner wall of the slide groove 16. The slider 17 drives the outer buffer rod 19 to move, and then the buffer rod 19 drives the outer buffer spring 20 to slide. One end of the spring abuts against the side wall of the slider 17, and the other end is fixed to the limiting boss of the lifting lug plate 5. It is linked with the bracket 1 through the support rod 18. When there is an impact or vibration, the buffer rod 19 slides axially to compress or extend the buffer spring 20, which helps to ensure the stability of the device.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic lifter lower anchor point double lug conversion device, comprising a bracket (1), characterized in that: The bracket (1) is fixedly connected to the outside of a lower anchor box (2), and the lower anchor box (2) is detachably connected to a lower anchor plate (3). The lower anchor plate (3) is fixedly connected to the outside of a steel strand (4). The bracket (1) is fixedly connected to the outside of a lifting lug plate (5). The lower anchor box (2) is provided with a positioning mechanism. The lifting lug plate (5) is fixedly connected to the outside of a non-detachment mechanism. The positioning mechanism includes a hole (8), the outside of which is located outside the lower anchor plate (3). A limit assembly is slidably connected inside the lower anchor box (2). Multiple limit blocks (10) are detachably connected to the outside of the lower anchor box (2). A slotted hole (12) is opened on the outside of the limit block (10). Multiple fixing bolts (13) are threadedly connected to the bottom of the lower anchor box (2). A spring washer (14) is fixedly connected to the outside of the fixing bolt (13). A limit rod (15) is fixedly connected to the outside of the fixing bolt (13). Multiple lifting lugs (6) are fixedly connected to the outside of the lifting lug plate (5). Multiple stiffening ribs (7) are fixedly connected to the outside of the lifting lug plate (5).

2. The hydraulic lifter lower anchor point double lug conversion device according to claim 1, characterized in that: The limiting component includes a connecting rod (11), which is fixedly connected to the outside of the limiting block (10). The lower anchor plate (3) has multiple fixing holes (9) on its outside, and the connecting rod (11) is slidably connected to the outside of the fixing holes (9).

3. The hydraulic lifter lower anchor point double lug conversion device according to claim 2, characterized in that: The anti-fall mechanism includes a slide groove (16), the outside of which is disposed on the outside of the lifting lug plate (5), and a plurality of sliders (17) are slidably connected to the outside of the slide groove (16).

4. A hydraulic lifter lower anchor point double lug conversion device according to claim 3, characterized in that: The slider (17) is externally fixedly connected to a plurality of support rods (18), and the support rods (18) are externally fixedly connected to the outside of the bracket (1).

5. A hydraulic lifter lower anchor point double lug conversion device according to claim 4, characterized in that: The slider (17) is fixedly connected to a plurality of buffer rods (19), and a buffer spring (20) is sleeved on the outside of the buffer rods (19).

6. The hydraulic lifter lower anchor point double lug conversion device according to claim 1, characterized in that: The fixing bolt (13) is externally fixedly connected to the outside of the limiting rod (15), and the limiting rod (15) is externally slidably connected to the inside of the slotted hole (12).

7. A hydraulic lifter lower anchor point double lifting lug conversion device according to claim 4, characterized in that: The slider (17) is slidably connected to the outside of the groove (16), and the support rod (18) is fixedly connected to the outside of the slider (17).

8. A hydraulic lifter lower anchor point double lug conversion device according to claim 1, characterized in that: The external of the lifting lug (5) is fixedly connected to the outside of the bracket (1), and the external of the lifting lug (5) is fixedly connected to the outside of the stiffening rib (7).

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