Telescopic lifting frame

Abstract

The utility model discloses a telescopic lifting frame which comprises a base and a lifting seat, a machine frame is arranged above the base, a pair of rotating shafts are arranged on the two sides of the machine frame, cams are fixed to the two ends of each rotating shaft, a plurality of vertical guide columns are arranged above the base, and the lifting seat is arranged on the base. The lifting seat is provided with a guide hole and is connected with the guide column in an up-down sliding mode, and the cam abuts against the bottom of the lifting seat. When the lifting seat needs to be adjusted, the rotating shafts are controlled to rotate through the driving mechanism, the rotating shafts rotate to drive the cams to rotate, the cams abut against the bottom of the base all the time, and the distance between the lifting seat and the base is changed due to the change of the radius of the cams. The lifting seat is driven to slide up and down along the guide columns, the cams are arranged to support the four corners of the lifting seat, the guide columns enable the lifting seat to slide and guide, the lifting seat is stable and high in stability during lifting, operation of workers is facilitated, and safety is high.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery, in particular to a telescopic lifting frame. Background Art

[0002] Construction machinery is a general term for mechanical equipment used in engineering construction and urban and rural construction. It includes excavators, earth-moving machinery, compaction machinery, engineering lifting machinery, pile-driving machinery, road machinery, concrete machinery, concrete products machinery, steel-grade prestressed machinery, decoration machinery, aerial work machinery and other machinery. In the construction of construction projects, vertical transportation often uses machinery such as building lifting frames, which generally refers to tools for vertically transporting construction workers or building materials and goods on construction sites, or for providing platforms for construction workers to construct walls.

[0003] At present, there are still some defects in the use of lifting platforms for construction on the market. During the lifting process, when the height is high, its stability is easily affected, which reduces its safety performance and increases the risk of safety accidents. It is not only inconvenient for the workers on the lifting platform to operate, but may also endanger their personal safety. Utility Model Content

[0004] The utility model aims to provide a telescopic lifting frame, which has stable lifting and lowering and strong stability, is convenient for staff to operate and has high safety.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a retractable lifting frame, including a base and a lifting seat, a frame is provided above the base, a pair of rotating shafts are provided on both sides of the frame, and cams are fixed at both ends of each rotating shaft, a plurality of vertical guide columns are provided above the base, the lifting seat is provided with guide holes and is slidably connected with the guide columns up and down, and the cam is in contact with the bottom of the lifting seat; and a driving mechanism for driving the pair of rotating shafts to rotate is also included.

[0006] By adopting the above technical scheme, the staff operates on the lifting seat. When the lifting seat needs to be adjusted, the driving mechanism is used to control the rotation of the rotating shaft. After the rotating shaft rotates, the cam is driven to rotate. The cam always keeps in contact with the bottom of the base. The radius of the cam changes, so that the distance between the lifting seat and the base changes, thereby driving the lifting seat to slide up and down along the guide column. Multiple cams are provided to support the four corners of the lifting seat, and multiple guide columns enable the lifting seat to slide and guide. Compared with the existing technology, the lifting seat is stable and stable when it is raised and lowered, which is convenient for the staff to operate and has high safety.

[0007] As a further optimization of the utility model, the driving mechanism includes a motor, a worm and a turbine arranged above the base, the worm is rotatably connected to the frame, the motor is a dual-axis motor, the output shaft of the motor is connected to the worm, and the turbine fixing sleeve is arranged on the rotating shaft and meshes with the worm.

[0008] By adopting the above technical solution, when the lifting seat needs to be adjusted, the motor is turned on, the motor drives the worm to rotate, the rotation of the worm drives the turbine to rotate, and thus drives the rotating shaft to rotate. The motor is a dual-axis motor that can drive a pair of rotating shafts to rotate synchronously, so that the four cams rotate synchronously to ensure stability.

[0009] As a further optimization of the utility model, a roller is provided at the bottom of the base, connecting seats are provided on both sides of the base, a hydraulic cylinder is provided above each connecting seat and a support seat is provided below each connecting seat, and the output end of the hydraulic rod is connected to the support seat.

[0010] By adopting the above technical solution, rollers are set to enable the base to move, which facilitates moving the lifting frame to the target construction area. When arriving, the output end of the hydraulic rod is controlled to extend, driving the support seat to move downward, thereby lifting the rollers and locking the base position.

[0011] As a further optimization of the utility model, a pad is provided at the bottom of the support seat, and an anti-slip groove is provided at the bottom of the pad.

[0012] By adopting the above technical solution, a pad is set to increase the friction between the support seat and the ground, further improving stability.

[0013] As a further optimization of the utility model, a ladder is provided on one side of the lifting seat.

[0014] By adopting the above technical solution, a ladder is provided to facilitate the staff to climb onto the lifting seat.

[0015] As a further optimization of the utility model, a fence is provided above the lifting seat.

[0016] By adopting the above technical solution, setting up a fence can further improve the safety of the staff at work.

[0017] The beneficial effects of the utility model are as follows: the staff operates on the lifting seat, and when the lifting seat needs to be adjusted, the driving mechanism is used to control the rotation of the rotating shaft, and the rotation of the rotating shaft drives the cam to rotate, and the cam always keeps abutment with the bottom of the base, and the radius of the cam changes so that the distance between the lifting seat and the base changes, thereby driving the lifting seat to slide up and down along the guide column, and multiple cams are provided to support the four corners of the lifting seat, and multiple guide columns enable the lifting seat to slide and guide. Compared with the prior art, the lifting seat is stable and stable when it is lifted and lowered, which is convenient for the staff to operate and has high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0020] Figure 3 It is a side structural schematic diagram of the utility model.

[0021] The meaning of the numbers in the figure are: 1. Base; 11. Connecting seat; 2. Lifting seat; 21. Guide hole; 3. Frame; 31. Rotating shaft; 32. Motor; 33. Worm; 34. Turbine; 35. Cam; 4. Guide column; 5. Fence; 6. Roller; 7. Hydraulic cylinder; 8. Support seat; 81. Pad; 9. Ladder. DETAILED DESCRIPTION

[0022] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0023] See attached Figure 1-3 The embodiment disclosed in the utility model is further provided with: a telescopic lifting frame, comprising a base 1 and a lifting seat 2, a frame 3 is provided above the base 1, a pair of rotating shafts 31 are provided on both sides of the frame 3, and a cam 35 is fixed at both ends of each rotating shaft 31, a plurality of vertical guide columns 4 are provided above the base 1, the lifting seat 2 is provided with a guide hole 21 and is slidably connected with the guide column 4 up and down, and the cam 35 is in contact with the bottom of the lifting seat 2;

[0024] It also includes a driving mechanism for driving a pair of rotating shafts 31 to rotate. Specifically, the driving mechanism includes a motor 32, a worm 33 and a turbine 34 arranged above the base 1. The worm 33 is rotatably connected to the frame 3. The motor 32 is a double-shaft motor 32. The output shaft of the motor 32 is connected to the worm 33. The turbine 34 is fixedly sleeved on the rotating shaft 31 and meshes with the worm 33.

[0025] Furthermore, a ladder 9 is provided on one side of the lifting seat 2 .

[0026] Furthermore, a roller 6 is provided at the bottom of the base 1, and connecting seats 11 are provided on both sides of the base 1. A hydraulic cylinder 7 is provided above each connecting seat 11, and a supporting seat 8 is provided below each connecting seat 11. The output end of the hydraulic rod is connected to the supporting seat 8, and a pad 81 is provided at the bottom of the supporting seat 8, and an anti-slip groove is provided at the bottom of the pad 81;

[0027] The motor 32 and the hydraulic cylinder 7 in this embodiment are conventional equipment purchased on the market and known to those skilled in the art. They can be customized or selected according to actual needs. In this patent, we only use them and do not improve their structure and function. For those skilled in the art, their setting method, installation method and electrical connection method only need to be debugged and operated according to the requirements of their instruction manual, and will not be described in detail here. The motor 32 and the hydraulic cylinder 7 are provided with a control switch matched therewith. The installation position of the control switch is selected according to actual use needs to facilitate the operator to operate and control.

[0028] The principle of the utility model is as follows: the lifting frame is moved to the target construction area by the roller 6. When it arrives, the output end of the hydraulic rod is controlled to extend, driving the support seat 8 to move downward, thereby lifting the roller 6, locking the position of the base 1, and setting the pad 81 to increase the friction between the support seat 8 and the ground, thereby improving stability;

[0029] The staff can climb onto the lifting seat 2 through the ladder 9; the staff operates on the lifting seat 2, and when the lifting seat 2 needs to be adjusted, the motor 32 is turned on, and the motor 32 drives the worm 33 to rotate, and the rotation of the worm 33 drives the turbine 34 to rotate, thereby driving the rotating shaft 31 to rotate. The motor 32 is a dual-axis motor 32 that can drive a pair of rotating shafts 31 to rotate synchronously, so that the four cams 35 rotate synchronously to ensure stability;

[0030] After the rotating shaft 31 rotates, the cam 35 is driven to rotate. The cam 35 always keeps in contact with the bottom of the base 1. The radius of the cam 35 changes, so that the distance between the lifting seat 2 and the base 1 changes, thereby driving the lifting seat 2 to slide up and down along the guide column 4. A plurality of cams 35 are provided to support the four corners of the lifting seat 2. A plurality of guide columns 4 allow the lifting seat 2 to slide and be guided. Compared with the prior art, the lifting seat 2 is stable and stable when it is lifted and lowered, which is convenient for the staff to operate and has high safety.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A retractable lifting frame, characterized in that: The invention comprises a base (1) and a lifting seat (2), wherein a frame (3) is arranged above the base (1), a pair of rotating shafts (31) are arranged on both sides of the frame (3), and a cam (35) is fixed at both ends of each rotating shaft (31), a plurality of vertical guide columns (4) are arranged above the base (1), the lifting seat (2) is provided with a guide hole (21) and is slidably connected to the guide column (4) up and down, and the cam (35) is in contact with the bottom of the lifting seat (2); and a driving mechanism for driving the pair of rotating shafts (31) to rotate is also included.

2. A retractable lifting frame according to claim 1, characterized in that: The driving mechanism comprises a motor (32), a worm (33) and a turbine (34) arranged above the base (1); the worm (33) is rotatably connected to the frame (3); the output shaft of the motor (32) is connected to the worm (33); and the turbine (34) is fixedly sleeved on the rotating shaft (31) and meshed with the worm (33).

3. A retractable lifting frame according to claim 1 or 2, characterized in that: A roller (6) is provided at the bottom of the base (1), and connecting seats (11) are provided on both sides of the base (1). A hydraulic cylinder (7) is provided above each connecting seat (11) and a supporting seat (8) is provided below each connecting seat (11), and an output end of the hydraulic cylinder is connected to the supporting seat (8).

4. A retractable lifting frame according to claim 3, characterized in that: A pad (81) is provided at the bottom of the support seat (8), and an anti-slip groove is provided at the bottom of the pad (81).

5. A retractable lifting frame according to claim 1 or 2, characterized in that: A ladder (9) is provided on one side of the lifting seat (2).

6. A retractable lifting frame according to claim 1 or 2, characterized in that: A fence (5) is provided above the lifting seat (2).

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