A lifting platform with stable lifting function

Abstract

The present invention discloses a lifting platform with a stable lifting function, including a main unit and a lifting unit, wherein the main unit includes a base, a bottom plate, a strip support plate, universal wheels, two sliders, two fixed blocks, a top plate, a slider and a fixed block, a groove one is arranged on the top of the base, a groove two is arranged at the middle position of the base below the groove one, strip grooves are arranged through the inside of the base on both sides of the groove two, the bottom plate is slidably arranged inside the groove one, a strip support plate is arranged at the bottom of the bottom plate above the strip groove, and the strip support plate extends into the inside of the strip groove, universal wheels are arranged at both ends of the bottom of the strip support plate, and a slide groove two is arranged at the middle position of the top of the bottom plate. The bottom and one end of the four scissor-type articulated frames of the present invention all move toward one side of the top plate and the bottom plate, and the four scissor-type articulated frames are always located at the four corner positions of the top plate and the bottom, thereby ensuring the stability of the lifting platform when it rises.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting platforms, and in particular to a lifting platform with a stable lifting function. Background Art

[0002] A lifting platform is a lifting machine that transports people or objects vertically. It also refers to equipment for vertical transportation in logistics systems such as factories and automatic warehouses. The lifting platform is often equipped with various flat conveying equipment as a connecting device for conveyor lines at different heights. It is generally driven by hydraulics, so it is called a hydraulic lifting platform. In addition to being used for transporting goods at different heights, it is widely used in high-altitude installation, maintenance and other operations. The free lifting characteristics of the lifting platform have been widely used in municipal maintenance, cargo transportation at docks and logistics centers, building decoration, etc. It can move freely after installing automobile chassis, battery car chassis, etc., and the working height space has also changed. It has the advantages of light weight, self-propelled, electric start, self-supporting legs, simple operation, large working surface, and the ability to cross obstacles for high-altitude operations, etc. 360-degree free rotation.

[0003] Most of the existing lifting platforms adopt a pair of scissor-type articulated frames and hydraulic telescopic rods to control the lifting of the lifting platform. When the lifting platform is working, the hydraulic telescopic rod is started to bring the bottom and top ends of the pair of scissor-type articulated frames closer together to realize the lifting of the lifting platform. When rising, the contact area between the scissor-type articulated frames and the base and top plate will affect the stability of the lifting. At the same time, universal wheels are configured at the bottom of the existing lifting platforms to facilitate the movement of the lifting platform, but the universal wheels need to be locked when the lifting platform rises. Summary of the invention

[0004] Technical issues to be solved

[0005] The object of the present invention is to provide a lifting platform with a stable lifting function to solve the problems raised in the above background technology.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] The lifting platform with stable lifting function comprises a main body unit and a lifting unit, the main body unit comprises a base, a bottom plate, a strip support plate, a universal wheel, a sliding block two, a fixed block two, a top plate, a sliding block one and a fixed block one, the top of the base is provided with a groove one, the middle position of the base below the groove one is provided with a groove two, the base inside the two sides of the groove two is provided with a strip groove through, the bottom plate is slidably arranged in the groove one, the bottom of the bottom plate above the strip groove is provided with a strip support plate, and the strip support plate extends into the strip groove, universal wheels are arranged at both ends of the bottom of the strip support plate, a sliding groove two is arranged at the middle position of the top of the bottom plate, sliding blocks two are slidably arranged at both ends of the sliding groove two, fixed blocks two are vertically arranged on both sides of the two ends of the top of the bottom plate, the top plate is arranged just above the sliding groove two, a sliding groove one is arranged at the middle position of the bottom of the top plate, sliding blocks one are slidably arranged at both ends of the sliding groove one, and fixed blocks one are arranged on both sides of both ends of the bottom of the top plate;

[0008] The lifting unit includes a rotating rod, a gear, a rack, a hydraulic telescopic rod and a scissor-type articulated frame, a rotating rod is arranged between the two fixed blocks at both ends of the base plate through a bearing, both ends of the rotating rod pass through the fixed block two and extend to one side of the fixed block two and are fixedly connected with a gear, a rack is arranged on one side wall of the groove on one side of the gear, the rack and the rotating rod are meshed with each other, a hydraulic telescopic rod is vertically arranged at both ends inside the groove two, the output end of the hydraulic telescopic rod is fixedly connected to the bottom of the base plate, and a scissor-type articulated frame is arranged at the four corner positions between the top plate and the base plate, one end of the top of the scissor-type articulated frame is hinged to the corresponding fixed block one, and the other end of the top of the scissor-type articulated frame is hinged to the corresponding end of the slider one, one end of the bottom of the scissor-type articulated frame is welded to the side wall of the rotating rod between the two fixed blocks two, and the other end of the top of the scissor-type articulated frame is hinged to the corresponding end of the slider two.

[0009] Preferably, rubber pads are provided at the four corners of the bottom of the base.

[0010] Preferably, the interiors of the second slide groove and the first slide groove are both provided with slide rails for the sliding block 2 and the first slide groove to slide.

[0011] Preferably, the thickness of the gear is 5-10 cm.

[0012] Preferably, anti-slip stripes are provided on the top of the top plate. Beneficial Effects

[0013] The present invention arranges scissor-type articulated frames at four corner positions between the top plate and the bottom plate, one end of the top of the scissor-type articulated frames is articulated to a corresponding fixed block one, and the other end of the top of the scissor-type articulated frames is articulated to a corresponding slider one end, one end of the bottom of the scissor-type articulated frames is welded to a side wall of a rotating rod between two fixed blocks two, and the other end of the top of the scissor-type articulated frames is articulated to a corresponding slider two end. When in use, one end of the bottom and top of the four scissor-type articulated frames moves toward one side of the top plate and the bottom plate, and the four scissor-type articulated frames are always located at the four corner positions of the top plate and the bottom, thereby ensuring the stability of the lifting platform when it rises.

[0014] The present invention is provided with a strip support plate at the bottom of the bottom plate above the strip groove, and the strip support plate extends into the strip groove, and universal wheels are provided at both ends of the bottom of the strip support plate, and a rotating rod is provided between two fixed blocks 2 at both ends of the bottom plate through a bearing, and both ends of the rotating rod pass through the fixed block 2 and extend to one side of the fixed block 2 to be fixedly connected to a gear, a rack is provided on one side wall of the groove on one side of the gear, and the rack and the rotating rod are meshed with each other, and hydraulic telescopic rods are vertically provided at both ends inside the groove 2, and the output end of the hydraulic telescopic rod is fixedly connected to the bottom of the bottom plate. When used, when the bottom plate is located at the bottom end of the groove 1, the length of the telescopic rod is the shortest, the scissor-type articulated frame is in a folded state, and the height of the lifting platform is the lowest. At this time, the strip support plate at the bottom of the bottom plate passes through the strip groove, and the four universal wheels are in contact with the ground, that is, initially, the universal wheels are in contact with the ground. This is convenient for the movement of the lifting platform. When the lifting platform rises, it is only necessary to control the output end of the hydraulic telescopic rod to rise, so that the bottom plate moves upward in the groove one. When the bottom plate moves upward, the rack on one side wall of the gear groove engages, thereby causing the gear to rotate. The rotation of the gear will cause the rotating rod to rotate. Since one end of the bottom of the scissors-type articulated frame is welded to the side wall of the rotating rod between the two fixed blocks two, the angle of one end of the bottom of the scissors-type articulated frame is changed when the rod is turned, thereby causing the scissors-type articulated frame to extend and drive the top plate to rise. At the same time, when the bottom plate rises and moves upward in the groove one, the strip support at the bottom of the bottom plate enters the strip groove of the base, thereby causing the universal wheel at the bottom of the strip support to enter the strip groove. At this time, the base contacts the ground to prevent movement when the lifting platform rises, thereby ensuring the stability of the lifting platform when it rises. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the first state of the present invention;

[0016] Figure 2 It is a schematic diagram of the structure of the second state of the present invention;

[0017] Figure 3 for Figure 1 Schematic diagram of the AA surface structure.

[0018] Figure numerals: 1-base, 2-gear, 3-slide groove 1, 4-slider 1, 5-top plate, 51-fixed block 1, 6-scissor-type articulated frame, 7-slider 2, 8-rotating rod, 9-rack, 10-strip support plate, 11-groove 1, 12-groove 2, 13-slide groove 2, 14-bottom plate, 15-hydraulic telescopic rod, 16-universal wheel, 17-strip groove, 18-fixed block 2. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] Example, such as Figure 1-3 The lifting platform with stable lifting function shown in the figure comprises a main unit and a lifting unit, the main unit comprises a base 1, a bottom plate 14, a strip support plate 10, a universal wheel 16, a slider 27, a fixed block 218, a top plate 5, a slider 14 and a fixed block 151, rubber pads are arranged at the four corner positions of the bottom of the base 1, a groove 11 is arranged at the top of the base 1, a groove 2 12 is arranged at the middle position of the base 1 below the groove 11, strip grooves 17 are arranged through the inside of the base 1 on both sides of the groove 2 12, the bottom plate 14 is slidably arranged in the groove 11, a strip support plate 10 is arranged at the bottom of the bottom plate 14 above the strip groove 17, and the strip support plate 10 is arranged at the bottom of the bottom plate 14 above the strip groove 17. The plate 10 extends to the inside of the strip groove 17, and universal wheels 16 are provided at both ends of the bottom of the strip support plate 10. A slide groove 13 is provided at the middle position of the top of the bottom plate 14, and sliders 7 are slidably provided at both ends of the slide groove 13. Fixed blocks 18 are vertically provided on both sides of both ends of the top of the bottom plate 14. The top plate 5 is arranged directly above the slide groove 13, and anti-skid stripes are provided on the top of the top plate 5. A slide groove 3 is provided at the middle position of the bottom of the top plate 5, and sliders 4 are slidably provided at both ends of the slide groove 3. Fixed blocks 51 are provided on both sides of both ends of the bottom of the top plate 5. Slide rails for the sliders 7 and the slide groove 3 to slide are provided inside the slide groove 13 and the slide groove 13.

[0021] The lifting unit includes a rotating rod 8, a gear 2, a rack 9, a hydraulic telescopic rod 15 and a scissor-type articulated frame 6. The rotating rod 8 is arranged between the two fixed blocks 18 at both ends of the bottom plate 14 through a bearing. Both ends of the rotating rod 8 pass through the fixed block 18 and extend to one side of the fixed block 18 to be fixedly connected with a gear 2. The thickness of the gear 2 is 10 cm. The side wall of the groove 11 on one side of the gear 2 is provided with a rack 9, and the rack 9 is meshed with the rotating rod 8. Both ends of the groove 12 are vertically provided with hydraulic Telescopic rod 15, the output end of the hydraulic telescopic rod 15 is fixedly connected to the bottom of the base plate 14, and scissor-type articulated frames 6 are arranged at the four corner positions between the top plate 5 and the base plate 14. One end of the top of the scissor-type articulated frame 6 is hinged to the corresponding fixed block 51, and the other end of the top of the scissor-type articulated frame 6 is hinged to one end of the corresponding slider 4, one end of the bottom of the scissor-type articulated frame 6 is welded to the side wall of the rotating rod 8 between the two fixed blocks 2 18, and the other end of the top of the scissor-type articulated frame 6 is hinged to one end of the corresponding slider 2 7.

[0022] Working principle: When the bottom plate 13 is at the bottom of the groove 11, the length of the telescopic rod is the shortest, and the scissor-type articulated frame 6 is in a folded state, that is, the height of the lifting platform is the lowest. At this time, the strip support plate 10 at the bottom of the bottom plate 13 passes through the strip groove 17, and the four universal wheels 16 are in contact with the ground. That is, at the beginning, the universal wheels 16 are in contact with the ground (such as Figure 1 ) is convenient for the lifting platform to move. When the lifting platform rises, it is only necessary to control the output end of the hydraulic telescopic rod 15 to rise, so that the bottom plate 14 moves upward inside the groove 11. When the bottom plate 14 moves upward, the gear 2 is engaged with the rack 9 on the side wall of the groove 11, thereby rotating the gear 2, and the rotation of the gear 2 causes the rotating rod 8 to rotate. Since one end of the bottom of the scissor-type articulated frame 6 is welded to the side wall of the rotating rod 8 between the two fixed blocks 18, the angle of one end of the bottom of the scissor-type articulated frame 6 is changed when the rod 8 is rotated, thereby causing the scissor-type articulated frame 6 to extend and drive the top plate 5 upward. When the top plate 5 rises, and the scissor-type articulated frames 6 extend to drive the top plate 5 to rise, since the bottom and one end of the top of the four scissor-type articulated frames 6 move toward the top plate 5 and the bottom plate 14, the four scissor-type articulated frames 6 are always located at the four corners of the top plate 5 and the bottom plate 14, ensuring the stability of the lifting platform when it rises. At the same time, when the bottom plate 14 rises and moves upward inside the groove 11, the strip support block 10 at the bottom of the bottom plate 14 enters the strip groove 17 of the base 1, so that the universal wheel 16 at the bottom of the strip support block 10 enters the strip groove 17. At this time, the base 1 is in contact with the ground (such as Figure 2 ), to prevent the lift from moving when it is rising, and to ensure the stability of the lift when it is rising.

[0023] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A lifting platform with stable lifting function, characterized in that: The lifting unit comprises a main unit and a lifting unit, wherein the main unit comprises a base, a bottom plate, a strip support plate, a universal wheel, a slider 2, a fixed block 2, a top plate, a slider 1 and a fixed block 1, a groove 1 is arranged on the top of the base, a groove 2 is arranged at the middle position of the base below the groove 1, strip grooves are arranged through the inside of the base on both sides of the groove 2, the bottom plate is slidably arranged inside the groove 1, a strip support plate is arranged at the bottom of the bottom plate above the strip groove, and the strip support plate extends into the inside of the strip groove, universal wheels are arranged at both ends of the bottom of the strip support plate, a slide groove 2 is arranged at the middle position of the top of the bottom plate, slide groove 2 is slidably arranged at both ends of the slide groove 2, fixed blocks 2 are vertically arranged on both sides of both ends of the top of the bottom plate, the top plate is arranged directly above the slide groove 2, a slide groove 1 is arranged at the middle position of the bottom of the top plate, slide groove 1 is slidably arranged at both ends of the inside of the slide groove 1, and fixed blocks 1 are arranged on both sides of both ends of the bottom of the top plate; The lifting unit includes a rotating rod, a gear, a rack, a hydraulic telescopic rod and a scissor-type articulated frame. A rotating rod is arranged between two fixed blocks 2 at both ends of the bottom plate through a bearing. Both ends of the rotating rod penetrate the fixed block 2 and extend to one side of the fixed block 2 and are fixedly connected with a gear. A rack is arranged on one side wall of a groove on one side of the gear. The rack and the gear are meshed with each other. Hydraulic telescopic rods are vertically arranged at both ends of the groove 2. The output end of the hydraulic telescopic rod is fixedly connected to the bottom of the bottom plate. Scissor-type articulated frames are arranged at four corner positions between the top plate and the bottom plate. One end of the top of the scissor-type articulated frame is hinged to the corresponding fixed block 1, and the other end of the top of the scissor-type articulated frame is hinged to the corresponding slider 1 end. One end of the bottom of the scissor-type articulated frame is welded to the side wall of the rotating rod between the two fixed blocks 2, and the other end of the bottom of the scissor-type articulated frame is hinged to one end of the corresponding slider 2. There are rubber pads at the four corners of the bottom of the base; there are anti-slip stripes on the top of the top plate.

2. A lifting platform with stable lifting function according to claim 1, characterized in that: The thickness of the gear is 5-10cm.

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