Motion chassis lifting mechanism for operation platform

Abstract

The utility model discloses a motion chassis lifting mechanism for a work platform, which relates to the technical field of lifting mechanisms and comprises a bottom plate and a screw rod, a top plate is movably arranged at the upper end of the bottom plate, a first sliding block and a second sliding block are in threaded connection with the outer side of the screw rod, and telescopic rods are symmetrically and rotatably connected to the side surface of the second sliding block. A connecting piece is installed at the displaceable position of the telescopic rod, one end of the telescopic rod is rotationally connected with a fixed rod, and the bottom end of the fixed rod is fixedly connected with a supporting leg; the connecting piece comprises a first patch, a second patch and a second screw rod, the first patch and the second patch are correspondingly attached to the movable side face of the telescopic rod, fixing holes are formed in the two sides of the first patch and the two sides of the second patch correspondingly, and the second screw rod penetrates through the fixing holes and is in threaded connection with a first nut. The problems that the stretching length of a rod piece of the scissor lift is correspondingly increased, bending and torsion stress of the rod piece is increased, the stability of the structure is reduced, and the shaking phenomenon is prone to occurring are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting mechanisms, in particular to a moving chassis lifting mechanism for an operating platform. Background Art

[0002] The commonly used lifting mechanism for the working platform is the scissor lift, which is a mechanical device that achieves lifting through a scissor structure. It consists of two or more cross-stacked metal scissor arms, and the extension and retraction of the scissor arms are controlled by hydraulic or electric devices to achieve the lifting of the platform. The scissor lift has the characteristics of simple structure, good stability, and large lifting height. It is widely used in industries such as industry, logistics, and construction to lift personnel, equipment, or objects to a certain height for operation.

[0003] As the height of the scissors lift increases, the extension length of the rods of the scissors lift will increase accordingly, increasing the bending and torsional stresses of the rods, causing the stability of the structure to decrease and making it prone to shaking. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a lifting mechanism for a moving chassis for a work platform, which solves the problem that as the height of the scissor lift increases, the extension length of the rod of the scissor lift increases accordingly, increasing the bending and torsional stress of the rod, resulting in a decrease in the stability of the structure and prone to shaking.

[0005] To achieve the above purpose, the utility model proposes a lifting mechanism of a moving chassis for a working platform, comprising: a bottom plate, a screw rod, a top plate movably arranged on the upper end of the bottom plate, a first slider and a second slider being threadedly connected to the outer side of the screw rod, a telescopic rod being symmetrically rotatably connected to the side of the second slider, a connecting piece being installed at a position where the telescopic rod can be displaced, one end of the telescopic rod being rotatably connected to a fixed rod, and a supporting foot being fixedly connected to the bottom end of the fixed rod;

[0006] The connecting piece includes a first patch, a second patch, and a second screw. The first patch and the second patch correspond to the movable sides of the telescopic rod. Fixing holes are provided on both sides of the first patch and the second patch. The second screw passes through the fixing hole and is threadedly connected with a first nut. The first screw is provided at the rotational connection between the telescopic rod and the fixed rod. The first screw passes through the telescopic rod and the fixed rod and is threadedly connected with the second nut.

[0007] As a further solution of the utility model: a plurality of fixed plates are fixedly connected to the upper end surface of the base plate and are displaced at one end, a connecting strip is fixedly connected to the upper end of the fixed plate, and a screw rod is rotationally connected to the lower end surface of the connecting strip and is located in the middle, and the other end of the screw rod is rotationally connected to the base plate.

[0008] As a further solution of the utility model: a plurality of fixed plates are fixedly connected to the side surfaces with a horizontal plate, a motor is fixedly connected to the lower end of the horizontal plate, a first gear is fixedly connected to the motor output shaft, a second gear is fixedly connected to the outer side of the screw rod and close to the bottom end, and a chain is connected between the second gear and the first gear.

[0009] As a further solution of the utility model: the second sliding block is located below the first sliding block, and the upper end surface of the first sliding block is fixedly connected to the lower end surface of the top plate.

[0010] As a further solution of the utility model: one end of the telescopic rod away from the second sliding block is rotatably connected to the fixed rod.

[0011] As a further solution of the utility model: the upper end surface of the bottom plate and the position close to the front end are rotatably connected with the first fixed column and the second fixed column, the top end of the first fixed column is slidably connected to the top plate, the top end of the second fixed column is rotatably connected to the top plate, and the first fixed column and the second fixed column are staggered.

[0012] As a further solution of the utility model: the third fixed column and the fourth fixed column are rotatably connected to the upper end surface of the bottom plate and near the rear end, the top end of the fourth fixed column is slidably connected to the top plate, the top end of the third fixed column is rotatably connected to the top plate, and the third fixed column and the fourth fixed column are staggered.

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

[0014] By setting a second slider, a telescopic rod, and a fixed rod, when the second slider moves up and down, the telescopic rod can be freely extended and retracted. When the height of the top plate from the ground meets the requirements, the first patch and the second patch are correspondingly fitted to the movable side of the telescopic rod, the second screw rod is passed through the fixing hole and threadedly connected with the first nut at the rear, so that the telescopic rod cannot be freely extended and retracted, and the first screw rod is passed through the telescopic rod and the fixed rod and threadedly connected with the second nut at the rear, so that the telescopic rod and the fixed rod cannot rotate. By fixing the telescopic rod and the fixed rod, the fixed rod is connected to the support foot, and the support foot is used to support the ground, thereby increasing the stability of the entire structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of another viewing angle of the utility model;

[0017] Figure 3 This is an enlarged view of part A of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the second sliding block of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the connecting piece of the utility model.

[0020] In the figure: 1, bottom plate; 2, first fixed column; 3, second fixed column; 4, third fixed column; 5, fourth fixed column; 6, top plate; 7, fixed plate; 8, cross plate; 9, motor; 10, chain; 11, first gear; 12, second gear; 13, screw rod; 14, first slider; 15, second slider; 16, telescopic rod; 17, fixed rod; 18, first screw rod; 19, connecting piece; 1901, first patch; 1902, second patch; 1903, fixing hole; 1904, second screw rod; 1905, first nut; 20, supporting foot; 21, connecting strip. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-4 As shown, a moving chassis lifting mechanism for a working platform comprises: a bottom plate 1, and a top plate 6 is movably provided on the upper end of the bottom plate 1.

[0023] like Figure 2 As shown, a plurality of fixed plates 7 are fixedly connected to the upper end surface of the base plate 1 and are displaced at one end. A connecting strip 21 is fixedly connected to the upper end of the fixed plate 7. A screw rod 13 is rotatably connected to the lower end surface of the connecting strip 21 and is located in the middle. The other end of the screw rod 13 is rotatably connected to the base plate 1.

[0024] like Figure 2 , 3 As shown, a plurality of fixed plates 7 are fixedly connected to the side surfaces with a transverse plate 8, a motor 9 is fixedly connected to the lower end of the transverse plate 8, a first gear 11 is fixedly connected to the output shaft of the motor 9, a second gear 12 is fixedly connected to the outer side of the screw rod 13 and near the bottom end, and a chain 10 is connected between the second gear 12 and the first gear 11.

[0025] like Figure 1 , 2 As shown, the outer side of the screw rod 13 is threadedly connected to a first slider 14 and a second slider 15 . The second slider 15 is located below the first slider 14 . The upper end surface of the first slider 14 is fixedly connected to the lower end surface of the top plate 6 .

[0026] The motor 9 is started, and the output shaft of the motor 9 drives the first gear 11 to rotate. The first gear 11 drives the second gear 12 and the screw rod 13 to rotate through the chain 10, so that the first slider 14 and the second slider 15 can move up and down in the vertical direction.

[0027] like Figure 1 As shown, the upper end surface of the base plate 1 and the position near the front end are rotatably connected with the first fixing column 2 and the second fixing column 3, the top end of the first fixing column 2 is slidably connected to the top plate 6, the top end of the second fixing column 3 is rotatably connected to the top plate 6, and the first fixing column 2 and the second fixing column 3 are alternately arranged.

[0028] The upper end surface of the base plate 1 and the position near the rear end are rotatably connected with the third fixing column 4 and the fourth fixing column 5. The top end of the fourth fixing column 5 is slidably connected to the top plate 6. The top end of the third fixing column 4 is rotatably connected to the top plate 6. The third fixing column 4 and the fourth fixing column 5 are staggered.

[0029] When the first slider 14 moves downward, the first slider 14 drives the top plate 6 to move downward together, thereby realizing the descending function of the lifting mechanism. The first slider 14 drives the top plate 6 to move upward together, thereby realizing the ascending function of the lifting mechanism.

[0030] like Figure 4 As shown, the side of the second slider 15 is symmetrically connected to the telescopic rod 16, and a connecting piece 19 is installed at the displacement position of the telescopic rod 16. The end of the telescopic rod 16 away from the second slider 15 is rotatably connected to the fixed rod 17, and the bottom end of the fixed rod 17 is fixedly connected to the supporting foot 20.

[0031] like Figure 5 As shown, the connecting member 19 includes a first patch 1901, a second patch 1902, and a second screw 1904. The first patch 1901 and the second patch 1902 correspond to the movable sides of the telescopic rod 16. Both sides of the first patch 1901 and the second patch 1902 are provided with fixing holes 1903. The second screw 1904 passes through the fixing hole 1903 and is threadedly connected with a first nut 1905.

[0032] like Figure 4 As shown, a first screw rod 18 is provided at the rotation connection between the telescopic rod 16 and the fixed rod 17 . The first screw rod 18 passes through the telescopic rod 16 and the fixed rod 17 and is threadedly connected with a second nut.

[0033] When the second slider 15 moves up and down, the telescopic rod 16 is free to extend and retract. When the height of the top plate 6 from the ground meets the requirement, the motor 9 is turned off, the second slider 15 stops sliding, the first patch 1901 and the second patch 1902 are correspondingly fitted to the movable side of the telescopic rod 16, the second screw 1904 is passed through the fixing hole 1903 and is threadedly connected to the first nut 1905 at the rear, so that the telescopic rod 16 cannot be freely extended and retracted, the first screw 18 is passed through the telescopic rod 16 and the fixed rod 17 and is threadedly connected to the second nut at the rear, so that the telescopic rod 16 and the fixed rod 17 cannot rotate.

[0034] Working principle:

[0035] When the second slider 15 moves up and down, the telescopic rod 16 is free to extend and retract. When the height of the top plate 6 from the ground meets the requirement, the motor 9 is turned off, the second slider 15 stops sliding, the first patch 1901 and the second patch 1902 are correspondingly fitted to the movable side of the telescopic rod 16, the second screw 1904 is passed through the fixing hole 1903 and is threadedly connected to the first nut 1905 at the rear, so that the telescopic rod 16 cannot be freely extended and retracted, the first screw 18 is passed through the telescopic rod 16 and the fixed rod 17 and is threadedly connected to the second nut at the rear, so that the telescopic rod 16 and the fixed rod 17 cannot rotate.

[0036] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. A moving chassis lifting mechanism for a working platform, characterized in that: include: A bottom plate (1) and a screw rod (13); a top plate (6) is movably arranged on the upper end of the bottom plate (1); a first slider (14) and a second slider (15) are threadedly connected to the outer side of the screw rod (13); a telescopic rod (16) is symmetrically rotatably connected to the side of the second slider (15); a connecting piece (19) is installed at a position where the telescopic rod (16) can be displaced; one end of the telescopic rod (16) is rotatably connected to a fixed rod (17); and a supporting foot (20) is fixedly connected to the bottom end of the fixed rod (17); The connecting member (19) comprises a first patch (1901), a second patch (1902), and a second screw (1904); the first patch (1901) and the second patch (1902) are correspondingly attached to the movable side of the telescopic rod (16); fixing holes (1903) are provided on both sides of the first patch (1901) and the second patch (1902); the second screw (1904) passes through the fixing hole (1903) and is threadedly connected to a first nut (1905); a first screw (18) is provided at the rotation connection between the telescopic rod (16) and the fixed rod (17); the first screw (18) passes through the telescopic rod (16) and the fixed rod (17) and is threadedly connected to a second nut.

2. The movable chassis lifting mechanism for a working platform according to claim 1, characterized in that: A plurality of fixing plates (7) are fixedly connected to the upper end surface of the bottom plate (1) and are located at one end of the displacement position. A connecting strip (21) is fixedly connected to the upper end of the fixing plate (7). A screw rod (13) is rotatably connected to the lower end surface of the connecting strip (21) and is located at the middle position. The other end of the screw rod (13) is rotatably connected to the bottom plate (1).

3. The movable chassis lifting mechanism for a working platform according to claim 2, characterized in that: The side surfaces of the plurality of fixed plates (7) are fixedly connected to a transverse plate (8), the lower end of the transverse plate (8) is fixedly connected to a motor (9), the output shaft of the motor (9) is fixedly connected to a first gear (11), the outer side of the screw rod (13) and a position close to the bottom end is fixedly connected to a second gear (12), and a chain (10) is connected between the second gear (12) and the first gear (11).

4. The movable chassis lifting mechanism for a working platform according to claim 1, characterized in that: The second sliding block (15) is located below the first sliding block (14), and the upper end surface of the first sliding block (14) is fixedly connected to the lower end surface of the top plate (6).

5. The movable chassis lifting mechanism for a working platform according to claim 1, characterized in that: One end of the telescopic rod (16) away from the second sliding block (15) is rotatably connected to the fixing rod (17).

6. The movable chassis lifting mechanism for a working platform according to claim 1, characterized in that: A first fixing column (2) and a second fixing column (3) are rotatably connected at the upper end surface of the bottom plate (1) and near the front end; the top end of the first fixing column (2) is slidably connected to the top plate (6); the top end of the second fixing column (3) is rotatably connected to the top plate (6); and the first fixing column (2) and the second fixing column (3) are alternately arranged.

7. The movable chassis lifting mechanism for a working platform according to claim 1, characterized in that: A third fixing column (4) and a fourth fixing column (5) are rotatably connected to the upper end surface of the bottom plate (1) and near the rear end; the top end of the fourth fixing column (5) is slidably connected to the top plate (6); the top end of the third fixing column (4) is rotatably connected to the top plate (6); and the third fixing column (4) and the fourth fixing column (5) are arranged alternately.

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