Rigid chain lift with hydraulic safety

Abstract

The utility model discloses a rigid chain lifting platform with hydraulic safety device relates to lifting platform technical field, including device seat, be provided with lifting platform on the device seat, be provided with scissor frame between device seat and upper lifting platform, the both sides of lifting platform downside all are provided with two extension support seat, and the same side two extension support seat sliding connection is connected, and the lower side of extension support seat is rotatably connected with hydraulic cylinder. The utility model discloses through the extension support seat and stud fixing structure of sliding connection, realizes the flexible adjustment of lifting platform support range, adapts different load demand, and four groups of symmetrical distribution hydraulic cylinder and lifting platform linkage, provides even lifting force, and provides initiative power source through rigid chain drive arrangement, and movable seat can vertically slide between fixed block, and movable seat plug -in column of hydraulic cylinder end and fixed block through -hole form multistage positioning mechanical locking, prevent platform from accidental falling because of power failure.

Description

Technical Field

[0001] This utility model relates to the field of lifting platform technology, and in particular to a rigid chain 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 rigid chain lifting platform is a lifting device driven by a rigid chain. It is typically used in applications requiring large loads or long lifting strokes. It converts rotary motion into vertical lifting motion through a combination of chain and gear systems, and is commonly found in industrial production lines, warehousing, and logistics.

[0003] Traditional rigid chain lifting platforms typically have fixed support range and load adjustment capabilities, making them inflexible for adapting to different sizes and load requirements. Furthermore, in traditional designs, they often fail to effectively prevent accidental platform falls in the event of power failure, posing safety hazards and potentially causing damage or personal injury. Therefore, this invention proposes a rigid chain lifting platform with a hydraulic safety device to address the problems mentioned in the background section. Utility Model Content

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

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

[0006] A rigid chain lifting platform with a hydraulic safety device includes a device base, a lifting platform above the device base, a scissor frame between the device base and the upper lifting platform, two extended support seats on the left and right sides of the lower side of the lifting platform, the two extended support seats on the same side are slidably connected, a hydraulic cylinder is rotatably connected to the lower side of the extended support seat, and movable seats are provided at the front and rear of the upper side of the device base. A slide is rotatably connected to the lower end of the hydraulic cylinder, and the slide slides left and right on the corresponding movable seat on the lower side.

[0007] Preferably, each of the four corners of the lower side of the lifting platform is fixed with a fixing block 2, and a stud 1 that penetrates the upper end of the extended support is fixed to the outside of the fixing block 2, and a nut that is tightly attached to the surface of the extended support is threaded onto the stud 1.

[0008] Preferably, the movable seat is provided with a fixing block on the lower left and right sides, which is fixed to the device base. The movable seat slides up and down between the two fixing blocks. The lower left and right sides of the movable seat are provided with inserts that slide inward and outward.

[0009] Preferably, the fixing block has several through holes with corresponding insertion posts, the outer end of the insertion post is threaded, and the outer end of the insertion post is threaded with a locking nut that is tightly attached to the outer surface of the fixing block.

[0010] Preferably, a second stud is fixed on the lower side of the slide block, a slot corresponding to the second stud is opened in the movable seat, and a nut tightly attached to the lower surface of the movable seat is threaded to the lower end of the second stud.

[0011] Preferably, the upper and lower parts of the scissor frame are rotatably connected to the lifting platform and the device base on one side, and pulleys are installed on the left and right sides of the other side of the upper and lower parts of the scissor frame, with several pulleys sliding on the lower side of the lifting platform and the device base respectively.

[0012] Preferably, a rigid chain drive device is fixedly installed at the center of the upper part of the device base, and a rigid chain is installed on the outside of the rigid chain drive device, with the upper end of the rigid chain connected to the upper lifting platform.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model achieves flexible adjustment of the support range of the lifting platform through the sliding connection of the extended support base and the stud fixing structure, adapting to the load requirements of different sizes. The rotational connection between the extended support base and the hydraulic cylinder, combined with the sliding mechanism of the slide and the movable seat, simplifies the installation process. At the same time, the connection stability is ensured by locking with nuts.

[0015] 2. The four sets of hydraulic cylinders of this utility model are symmetrically distributed. They are linked with the lifting platform through the extended support base to provide uniform lifting force. The rigid chain drive device serves as the active power source. The hydraulic cylinder ends are mechanically locked through the multi-stage positioning of the movable seat insert and the through hole of the fixed block. Even if the power fails, it can prevent the platform from falling accidentally.

[0016] 3. The movable seat of this utility model has a vertical sliding fit between the fixed blocks and a multi-hole positioning of the insert post, which allows the installation height of the hydraulic cylinder to be flexibly adjusted according to the working conditions. The bidirectional sliding structure of the slide and the movable seat not only compensates for the angular displacement when the hydraulic cylinder extends and retracts, but also achieves secondary fastening through the stud and two nuts. Attached Figure Description

[0017] Figure 1 This utility model presents a structural schematic diagram of a rigid chain lifting platform with a hydraulic safety device. Figure 1 ;

[0018] Figure 2 This utility model presents a structural schematic diagram of a rigid chain lifting platform with a hydraulic safety device. Figure 2 ;

[0019] Figure 3This is a front structural diagram of a rigid chain lifting platform with a hydraulic safety device proposed in this utility model.

[0020] Figure 4 This is a side view of a rigid chain lifting platform with a hydraulic safety device proposed in this utility model.

[0021] In the diagram: 1. Device base; 2. Lifting platform; 3. Extended support base; 4. Hydraulic cylinder; 5. Fixed block one; 6. Movable seat; 7. Rigid chain; 8. Scissor frame; 9. Fixed block two; 10. Stud one; 11. Stud two; 12. Slide; 13. Insert post; 14. Through hole. Detailed Implementation

[0022] 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.

[0023] Reference Figure 1-4 A rigid chain lifting platform with a hydraulic safety device includes a device base 1, a lifting platform 2 is provided above the device base 1, a scissor frame 8 is provided between the device base 1 and the upper lifting platform 2, the upper and lower parts of the scissor frame 8 are rotatably connected to the lifting platform 2 and the device base 1 on one side, and pulleys are installed on the left and right sides of the upper and lower parts of the scissor frame 8. Several pulleys slide on the lower side of the lifting platform 2 and the device base 1 respectively. A rigid chain drive device is fixedly installed at the center of the upper part of the device base 1, and a rigid chain 7 is installed outside the rigid chain drive device. The upper end of the rigid chain 7 is connected to the upper lifting platform 2.

[0024] Two extended support seats 3 are provided on the left and right sides of the lower side of the lifting platform 2. The two extended support seats 3 on the same side are slidably connected. Fixed blocks 2 9 are fixed at the four corners of the lower side of the lifting platform 2. A stud 10 that penetrates the upper end of the extended support seat 3 is fixed on the outside of the fixed block 2 9. A nut that is tightly attached to the surface of the extended support seat 3 is threaded on the stud 10. The two extended support seats 3 can be slidably adjusted according to the size of the lifting platform 2. The hydraulic cylinders 4 on both sides are assembled with the lifting platform 2 through the upper extended support seat 3. The upper ends of the two extended support seats 3 are through holes that pass through the corresponding stud 10. The corresponding nuts are threaded on the stud 10 to realize the installation and fixation of the lower extended support seat 3 structure of the lifting platform 2.

[0025] A hydraulic cylinder 4 is rotatably connected to the lower side of the extended support base 3. Movable seats 6 are provided on the front and rear sides of the upper side of the device base 1. A slide 12 is rotatably connected to the lower end of the hydraulic cylinder 4, and the slide 12 slides left and right on the corresponding movable seat 6 on the lower side. A stud 11 is fixed on the lower side of the slide 12. A slot corresponding to the stud 11 is opened in the movable seat 6, and a nut that is tightly attached to the lower surface of the movable seat 6 is threaded to the lower end of the stud 11. According to the installation of the two extended support bases 3 on the lower side, the slide 12 connected to the lower end slides on the corresponding movable seat 6. After the upper extended support base 3 structure is installed, the corresponding nut is threaded to the stud 11 at the lower end of the slide 12, so that the nut is tightly attached to the lower side of the movable seat 6, thereby achieving the purpose of fixing the lower part of the hydraulic cylinder 4.

[0026] The movable seat 6 has fixed blocks 5 on its lower left and right sides, which are fixed to the device base 1. The movable seat 6 slides up and down between the two fixed blocks 5. The lower left and right sides of the movable seat 6 have sliding inserts 13. The fixed blocks 5 have several through holes 14 corresponding to the inserts 13. The outer end of the inserts 13 is threaded and connected to a locking nut that fits tightly against the outer surface of the fixed blocks 5. According to the size of the hydraulic cylinder 4, the height of the movable seat 6 between the two fixed blocks 5 is adjusted. The inserts 13 on the lower left and right sides of the movable seat 6 are passed through the corresponding through holes 14 of the fixed blocks 5. Then, the corresponding nuts are threaded to the outer ends of the inserts 13 to fix the height of the movable seat 6 between the two fixed blocks 5. The four corner hydraulic cylinders 4 can play a safety role for the device and prevent the upper lifting platform 2 from falling accidentally.

[0027] 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 rigid chain lifting platform with a hydraulic safety device, comprising a device base (1), characterized in that, A lifting platform (2) is provided above the device base (1). A scissor frame (8) is provided between the device base (1) and the upper lifting platform (2). Two extended support seats (3) are provided on the left and right sides of the lower side of the lifting platform (2). The two extended support seats (3) on the same side are slidably connected. A hydraulic cylinder (4) is rotatably connected to the lower side of the extended support seat (3). Movable seats (6) are provided on the front and back sides of the upper side of the device base (1). A slide seat (12) is rotatably connected to the lower end of the hydraulic cylinder (4), and the slide seat (12) slides left and right on the corresponding movable seat (6) on the lower side.

2. The rigid chain lifting platform with hydraulic safety device according to claim 1, characterized in that, The lifting platform (2) has four fixed blocks (9) at its lower corners. The outer side of the fixed blocks (9) is fixed with a stud (10) that penetrates the upper end of the extended support base (3). The stud (10) is threaded with a nut that is close to the surface of the extended support base (3).

3. The rigid chain lifting platform with hydraulic safety device according to claim 1, characterized in that, The movable seat (6) is provided with a fixing block (5) fixed on the device seat (1) on both the left and right lower sides. The movable seat (6) slides up and down between the two fixing blocks (5). The movable seat (6) is provided with an insert (13) that slides inward and outward on the left and right lower parts.

4. The rigid chain lifting platform with hydraulic safety device according to claim 3, characterized in that, The fixing block (5) has several through holes (14) corresponding to the insert (13). The outer end of the insert (13) is threaded, and the outer end of the insert (13) is threaded with a locking nut that is close to the outer surface of the fixing block (5).

5. The rigid chain lifting platform with hydraulic safety device according to claim 1, characterized in that, The slide (12) is fixed with a stud (11) on the lower side. The movable seat (6) has a slot corresponding to the stud (11), and the lower end of the stud (11) is threaded with a nut that is close to the lower surface of the movable seat (6).

6. The rigid chain lifting platform with hydraulic safety device according to claim 1, characterized in that, The upper and lower parts of the scissor frame (8) are rotatably connected to the lifting platform (2) and the device base (1) on one side, and pulleys are installed on the other side of the upper and lower parts of the scissor frame (8). Several pulleys slide on the lower side of the lifting platform (2) and the device base (1) respectively.

7. The rigid chain lifting platform with hydraulic safety device according to claim 1, characterized in that, A rigid chain drive device is fixedly installed at the center of the upper part of the device base (1), and a rigid chain (7) is installed outside the rigid chain drive device. The upper end of the rigid chain (7) is connected to the upper lifting platform (2).

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