Lead screw lift with hydraulic safety

Abstract

The utility model discloses a screw rod lifting platform with hydraulic safety device relates to lifting platform technical field, including lifting base and lifting platform, be provided with the scissors frame between lifting base and lower lifting platform, and the one side of scissors frame upper and lower portion is respectively connected with lifting platform and lifting base rotation, and the other side of scissors frame upper and lower portion all are connected with slide axle rotation, the utility model discloses the main lifting system is formed with screw rod through scissors frame, and hydraulic cylinder group is as independent support vice system, ensure when main system failure, and hydraulic cylinder can form triangle support immediately, prevent platform to fall, and hydraulic cylinder realizes quick switching through rotating block and adjusting seat, and need not tool to complete installation, and adjusting seat position is nimble, and adapts different specifications's hydraulic cylinder, and hydraulic system is as backup, is not influenced by motor or screw rod failure, ensures safety redundancy, dynamic adjustment support angle, and through the hydraulic cylinder of cross arrangement and enhance the anti -eccentric load capacity of platform.

Description

Technical Field

[0001] This utility model relates to the field of lifting platform technology, and in particular to a screw lifting platform with a hydraulic safety device. Background Technology

[0002] A lifting platform is a device used to achieve vertical lifting operations. It is widely used in various industries such as construction, logistics, and production lines. Its main function is to move objects or personnel from one height to another for handling, installation, maintenance, and other operations. A screw-driven lifting platform is a type of lifting platform that uses a screw (usually a ball screw or trapezoidal screw) to achieve lifting. It is mainly used for precision adjustment and lifting, and has wide applications in machinery, electronics, and laboratory fields.

[0003] Traditional screw jacks typically rely on mechanical screws and motor drives, but lack an independent safety redundancy system. When the motor or screw system fails, the platform may not receive timely support, posing a risk of collapse. Therefore, this invention proposes a screw jack with a hydraulic safety device to address the problems mentioned in the background section. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a screw lifting platform with a hydraulic safety device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A screw-driven lifting platform with a hydraulic safety device includes a lifting base and a lifting platform. A scissor frame is provided between the lifting base and the lower lifting platform. The upper and lower sides of the scissor frame are rotatably connected to the lifting platform and the lifting base, respectively, and the other sides of the upper and lower parts of the scissor frame are rotatably connected to sliding shafts. A connecting seat is rotatably connected to the center of the lower side of the lifting platform. Hydraulic cylinders are provided on both the left and right sides of the lower side of the connecting seat. A rotating block is rotatably connected to the lower end of the hydraulic cylinder. An adjusting seat is rotatably connected to the lower side of the rotating block. A corresponding sliding strip seat is fixed on the upper side of the lifting base. The two adjusting seats slide left and right on the sliding strip seats.

[0007] Preferably, a rotating block is rotatably connected to the lower side of the connecting seat on both the left and right sides, and a stud is fixed to the lower side of the rotating block. The upper end of the hydraulic cylinder has a through hole corresponding to the stud, and the lower end of the stud is threaded with a nut that is close to the surface of the hydraulic cylinder.

[0008] Preferably, a plurality of positioning teeth are provided on the left and right sides of the upper side of the slide block, and a positioning buckle corresponding to the positioning teeth is rotatably connected in both of the adjusting seats, and a torsion spring is provided at the junction of the positioning buckle.

[0009] Preferably, the lifting base and the lifting platform are provided with corresponding sliding grooves on the left and right sides, and the two ends of the upper and lower sliding shafts slide in the two sliding grooves respectively.

[0010] Preferably, a screw block is rotatably connected to the center of the lower sliding shaft, and a motor is fixedly installed on the upper part of the lifting base, with a screw rod threadedly connected to the screw block fixed to the motor output shaft.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. The scissor frame and screw of this utility model constitute the main lifting system, and the hydraulic cylinder group forms an independent support sub-system. When the main system fails, the hydraulic cylinder can immediately form a triangular support to prevent the platform from falling. The hydraulic cylinder and the connecting seat are fastened with studs and nuts to ensure the mechanical reliability of key connection points.

[0013] 2. The hydraulic cylinder of this utility model can be quickly connected to the adjusting seat through rotating block one and rotating block two, and can be installed without complicated tools. The design of the slide block seat and positioning tooth block allows the position of the adjusting seat to be flexibly adjusted, adapting to different specifications of hydraulic cylinders. The hydraulic system serves as an independent backup and is not affected by motor or screw failures, achieving true safety redundancy.

[0014] 3. The positioning buckle and torsion spring of this utility model cooperate to realize stepless positioning of the adjustment seat. The support angle can be dynamically adjusted according to the length of the hydraulic cylinder. The hydraulic cylinders arranged in a cross pattern on both sides form a symmetrical force structure, which enhances the platform's resistance to eccentric load. Attached Figure Description

[0015] Figure 1 This utility model provides a structural schematic diagram of a screw lifting platform with a hydraulic safety device. Figure 1 ;

[0016] Figure 2 This utility model provides a structural schematic diagram of a screw lifting platform with a hydraulic safety device. Figure 2 ;

[0017] Figure 3 This is a side view of a screw lifting platform with a hydraulic safety device proposed in this utility model.

[0018] Figure 4 This is a top sectional view of a screw lifting platform with a hydraulic safety device proposed in this utility model.

[0019] In the diagram: 1. Lifting base; 2. Lifting platform; 3. Scissor frame; 4. Slide rail; 5. Motor; 6. Screw; 7. Screw block; 8. Slide shaft; 9. Hydraulic cylinder; 10. Adjusting seat; 11. Connecting seat; 12. Rotating block one; 13. Screw stud; 14. Rotating block two; 15. Positioning buckle block; 16. Slide bar seat; 17. Positioning tooth block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4 A screw lifting platform with a hydraulic safety device includes a lifting base 1 and a lifting platform 2. A scissor frame 3 is provided between the lifting base 1 and the lower lifting platform 2. The upper and lower sides of the scissor frame 3 are rotatably connected to the lifting platform 2 and the lifting base 1, respectively. The other upper and lower sides of the scissor frame 3 are rotatably connected to a sliding shaft 8. A screw block 7 is rotatably connected to the center of the lower sliding shaft 8. A motor 5 is fixedly installed on the upper part of the lifting base 1. The output shaft of the motor 5 is fixed with a screw rod 6 that is threadedly connected to the screw block 7. Slide grooves 4 corresponding to the sliding shaft 8 are opened on the left and right sides of the lifting base 1 and the lifting platform 2. The two ends of the upper and lower sliding shafts 8 slide in the two slide grooves 4, respectively.

[0022] A connecting seat 11 is rotatably connected to the lower center of the lifting platform 2. A hydraulic cylinder 9 is provided on both the left and right sides of the lower side of the connecting seat 11. A rotating block 14 is rotatably connected to the lower end of the hydraulic cylinder 9. An adjusting seat 10 is rotatably connected to the lower side of the rotating block 14. A rotating block 12 is rotatably connected to both the left and right sides of the lower side of the connecting seat 11. A stud 13 is fixed to the lower side of the rotating block 12. A through hole corresponding to the stud 13 is opened at the upper end of the hydraulic cylinder 9. A nut tightly attached to the surface of the hydraulic cylinder 9 is threaded to the lower end of the stud 13. The assembly of the left and right hydraulic cylinders 9 on the lower side of the connecting seat 11 is carried out so that the stud 13 on the lower side of the two rotating blocks 12 passes through the corresponding through hole at the upper end of the hydraulic cylinder 9. Then, a nut is threaded to the lower end of the stud 13 and tightly attached to the surface of the hydraulic cylinder 9, realizing the installation and assembly of the upper end of the hydraulic cylinder 9 with the connecting seat 11.

[0023] The upper side of the lifting base 1 is fixed with a corresponding slide block 16 of the adjusting seat 10. The two adjusting seats 10 slide left and right on the slide block 16. Several positioning teeth 17 are provided on the upper left and right sides of the slide block 16. The two adjusting seats 10 are rotatably connected with positioning buckles 15 corresponding to the positioning teeth 17. A torsion spring is provided at the junction of the positioning buckle 15. According to the length specification of the hydraulic cylinder 9, the adjusting seat 10 connected to the lower end of the hydraulic cylinder 9 is reasonably adjusted to slide on the slide block 16. When the adjustment position is determined, the positioning buckle 15 is snapped into the position of the corresponding positioning teeth 17 by the spring force of the torsion spring, so as to fix the position of the left and right adjusting seats 10 on the upper side of the slide block 16. The structure of the two sides of the cross hydraulic cylinder 9 not only facilitates quick assembly, but also can be adapted to different specifications of lifting equipment. The triangular support structure can realize the stable support of the upper lifting platform 2, increase the support safety of the upper lifting platform 2, and avoid personnel injury due to accidental fall of the lifting platform 2.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A screw jack with a hydraulic safety device, comprising a lifting base (1) and a lifting platform (2), characterized in that, A scissor frame (3) is provided between the lifting base (1) and the lower lifting platform (2). The upper and lower sides of the scissor frame (3) are rotatably connected to the lifting platform (2) and the lifting base (1) respectively. The other side of the upper and lower parts of the scissor frame (3) is rotatably connected to a sliding shaft (8). A connecting seat (11) is rotatably connected to the center of the lower side of the lifting platform (2). A hydraulic cylinder (9) is provided on the left and right sides of the lower side of the connecting seat (11). A rotating block (14) is rotatably connected to the lower end of the hydraulic cylinder (9). An adjusting seat (10) is rotatably connected to the lower side of the rotating block (14). A corresponding sliding bar seat (16) of the adjusting seat (10) is fixed on the upper side of the lifting base (1). The two adjusting seats (10) slide left and right on the sliding bar seat (16).

2. The screw jack with hydraulic safety device according to claim 1, characterized in that, The lower side of the connecting seat (11) is rotatably connected to a rotating block (12) on both the left and right sides. A stud (13) is fixed on the lower side of the rotating block (12). The upper end of the hydraulic cylinder (9) is provided with a through hole corresponding to the stud (13), and the lower end of the stud (13) is threaded with a nut that is close to the surface of the hydraulic cylinder (9).

3. The screw jack with hydraulic safety device according to claim 1, characterized in that, The upper left and right sides of the slide block (16) are provided with a number of positioning teeth (17), and the two adjustment seats (10) are rotatably connected with positioning buckles (15) corresponding to the positioning teeth (17), and the positioning buckles (15) are provided with torsion springs at the junction of the positioning buckles (15).

4. The screw jack with hydraulic safety device according to claim 1, characterized in that, The lifting base (1) and the lifting platform (2) are provided with corresponding sliding grooves (4) for the sliding shafts (8) on both the left and right sides, and the two ends of the upper and lower sliding shafts (8) slide in the two sliding grooves (4) respectively.

5. The screw jack with hydraulic safety device according to claim 1, characterized in that, The lower sliding shaft (8) is rotatably connected to a screw block (7), and a motor (5) is fixedly installed on the upper part of the lifting base (1). The output shaft of the motor (5) is fixed with a screw rod (6) that is threadedly connected to the screw block (7).

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