Lurking jacking AGV based on three-wire structure

Abstract

The present invention discloses a latent lifting AGV based on a three-screw structure, including a vehicle body, the top of the vehicle body is movably connected to a secondary lifting platform, the inner cavity of the vehicle body is fixedly connected to a fixed rod, the top of the fixed rod is slidably connected to a first telescopic rod, the surface of the first telescopic rod is fixedly connected to a primary lifting platform, the inner cavity of the vehicle body is fixedly connected to a first motor, the first motor drives a primary screw drive assembly that drives the primary lifting platform to lift and lower through a gear set, and the present invention relates to the field of AGV technology. The latent lifting AGV based on a three-screw structure has multi-stage lifting, and the lifting mechanism is integrated in a small space, the lifting height is higher, and the vehicle body 1 is supported while being lifted, which enhances its stability when carrying objects and prevents objects from tilting.

Description

Technical Field

[0001] The present invention relates to the technical field of AGVs, in particular to a latent lifting AGV based on a three-screw structure. Background Art

[0002] Traditional movable heavy-load moving mechanisms mainly include: gantry cranes, cranes, forklifts, etc., which are widely used in factories, ports, construction sites, warehouses, etc., and can complete the transportation of large and heavy objects. The rise of AGV vehicles has been increasingly applied to the field of object transportation.

[0003] According to a latent lifting AGV trolley described in patent number CN113212597A, a signal controller transmits instructions to the first hydraulic cylinder, and the first hydraulic cylinder can drive the lifting vehicle plate to perform an upward displacement operation, thereby achieving the purpose of the AGV trolley automatically transporting objects. However, there are the following problems during use: the height is low when lifted, and the wheels on the bottom of the vehicle are prone to slipping and causing shaking, and when the transmission assembly is lifted, foreign impurities enter the interior of the trolley, which can easily cause damage to internal parts. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a latent lifting AGV based on a three-screw structure, which solves the above-mentioned problems.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a latent jacking AGV based on a three-screw structure, including a vehicle body, the top of the vehicle body is movably connected with a secondary lifting platform, the inner cavity of the vehicle body is fixedly connected with a fixed rod, the top of the fixed rod is slidably connected with a first telescopic rod, the surface of the first telescopic rod is fixedly connected with a primary lifting platform, the inner cavity of the vehicle body is fixedly connected with a first motor, the first motor drives a primary screw drive assembly that drives the primary lifting platform to rise and fall through a gear set, the top of the primary lifting platform is fixedly connected with a second motor, the second motor drives a secondary screw drive assembly that drives the secondary lifting platform to rise and fall through a gear set, the surface of the first telescopic rod is slidably connected with the second telescopic rod, the top of the primary screw drive assembly is slidably connected with a lifting cylinder, and the top of the lifting cylinder is fixedly connected to the bottom of the secondary lifting platform.

[0006] As a further solution of the present invention: the inner cavity of the vehicle body is rotatably connected to a transmission gear, and the surface of the lifting rod of the primary screw drive assembly is provided with tooth patterns that mesh with the surface of the transmission gear.

[0007] As a further solution of the present invention: the inner cavity of the vehicle body is fixedly connected to a fixing frame, the inner cavity of the fixing frame is slidably connected to a push rod, the surface of the push rod is provided with teeth meshing with the surface of the transmission gear, the bottom end of the push rod passes through and extends to the bottom of the vehicle body and is slidably connected to the inner cavity of the vehicle body, the bottom end of the push rod is fixedly connected to a top seat, and the inner cavity of the vehicle body is provided with a groove adapted to the surface of the top seat.

[0008] As a further solution of the present invention: two second motors are provided and are symmetrically distributed on both sides of the first-stage lifting platform; two fixing rods are provided and are symmetrically distributed on both sides of the first-stage lifting platform.

[0009] As a further solution of the present invention: two push rods are provided and are symmetrically distributed.

[0010] As a further solution of the present invention: a limit frame is sleeved on the surface of the secondary lifting platform, a protective ring is fixedly connected to the bottom of the limit frame, the protective ring is sleeved on the surface of the vehicle body and folded, and the protective ring is made of elastic material.

[0011] As a further solution of the present invention: the bottom of the protective ring is fixedly connected with a mounting plate, the surface of the mounting plate is provided with a contact step surface abutting against the surface of the vehicle body, four mounting plates are provided, and all are fixed on the four sides of the vehicle body by mounting bolts, and the four mounting plates are assembled to form a rectangle.

[0012] As a further solution of the present invention: when the secondary lifting platform is raised to the highest point, the protective ring is stretched to the limit.

[0013] When in use, the first-level lifting platform is raised, the first motor is started to drive the first-level screw drive assembly to move, and the first-level lifting platform is raised. When the first-level lifting platform is raised, the first telescopic rod is driven to slide upward on the surface of the fixed rod, and the second-level lifting platform is raised at this time. After the first-level screw drive assembly is raised to the top, the second motor is started to drive the second-level screw drive assembly to move, and the second-level lifting platform is raised. At this time, the second-level lifting platform drives the second telescopic rod to slide on the top of the first telescopic rod, and drives the lifting cylinder to move upward on the top of the first-level screw drive assembly and rise to the limit. At this time, the first telescopic rod and the second telescopic rod are completely unfolded, and the lifting cylinder is completely unfolded. When the first-level lifting platform is raised, the first-level screw drive assembly drives the transmission gear to rotate, drives the top rod to move downward in the fixed frame, drives the top seat to move downward, abuts against the ground, lifts the vehicle body for support, and prevents the wheels from sliding. When the first-level lifting platform and the second-level lifting platform move, the protective ring is driven to rise. The protective ring protects the inside of the vehicle body and can be stretched according to the lifting of the vehicle body. When the protective ring needs to be disassembled, the mounting bolts are removed. At this time, the four mounting plates are separated, and the limit frame is lifted to remove the protective ring.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention integrates the lifting mechanism in a small space with multiple stages of lifting, and the lifting height is higher. The vehicle body is supported while being lifted, which enhances the stability of the vehicle when carrying objects and prevents objects from tilting.

[0016] 2. In the present invention, the protective ring protects the interior of the vehicle body and can be stretched as the vehicle body is lifted. When the protective ring needs to be disassembled, the mounting bolts are removed. At this time, the four mounting plates are separated, and the limit frame is lifted to remove the protective ring to prevent impurities from entering the interior of the vehicle and causing damage to parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural cross-sectional view of the present invention;

[0018] Figure 2 For the present invention Figure 1 A partial enlarged view of the middle A;

[0019] Figure 3 For the present invention Figure 1 A partial enlarged view of point B in the middle;

[0020] Figure 4 It is a structural schematic diagram of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the mounting plate of the present invention;

[0022] Figure 6 It is a schematic structural diagram of the limit frame of the present invention.

[0023] In the figure: 1. vehicle body; 2. limit frame; 3. protective ring; 5. first motor; 6. primary screw drive assembly; 7. primary lifting platform; 8. second motor; 9. secondary screw drive assembly; 10. lifting cylinder; 11. fixing rod; 12. first telescopic rod; 13. second telescopic rod; 14. transmission gear; 15. fixing frame; 16. top rod; 17. top seat; 18. groove; 19. mounting plate; 20. mounting bolt; 21. contact step surface; 22. secondary lifting platform. DETAILED DESCRIPTION

[0024] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0025] See also Figure 1-6The present invention provides a technical solution: a latent lifting AGV based on a three-screw structure, comprising a vehicle body 1, a secondary lifting platform 22 is movably connected to the top of the vehicle body 1, a fixed rod 11 is fixedly connected to the inner cavity of the vehicle body 1, a first telescopic rod 12 is slidably connected to the top of the fixed rod 11, a primary lifting platform 7 is fixedly connected to the surface of the first telescopic rod 12, a first motor 5 is fixedly connected to the inner cavity of the vehicle body 1, the first motor 5 drives a primary screw driving component 6 that drives the primary lifting platform 7 to rise and fall through a gear set, a second motor 8 is fixedly connected to the top of the primary lifting platform 7, and the second motor 8 drives a secondary screw driving component 9 that drives the secondary lifting platform 22 to rise and fall through a gear set, The surface of the first telescopic rod 12 is slidably connected to the second telescopic rod 13, the top of the first-level screw drive assembly 6 is slidably connected to the lifting cylinder 10, the top of the lifting cylinder 10 is fixedly connected to the bottom of the second-level lifting platform 22, the inner cavity of the vehicle body 1 is rotatably connected to the transmission gear 14, the surface of the lifting rod of the first-level screw drive assembly 6 is provided with a tooth pattern that meshes with the surface of the transmission gear 14, the inner cavity of the vehicle body 1 is fixedly connected to the fixing frame 15, the inner cavity of the fixing frame 15 is slidably connected to the push rod 16, the surface of the push rod 16 is provided with a tooth pattern that meshes with the surface of the transmission gear 14, the bottom end of the push rod 16 penetrates and extends to the bottom of the vehicle body 1 and is slidably connected to the inner cavity of the vehicle body 1, and the bottom of the push rod 16 The end is fixedly connected with a top seat 17, and the inner cavity of the car body 1 is provided with a groove 18 adapted to the surface of the top seat 17. When in use, the first-level lifting platform 7 is raised, the first motor 5 is started to drive the first-level screw driving assembly 6 to move, and the first-level lifting platform 7 is raised. When the first-level lifting platform 7 is raised, the first telescopic rod 12 is driven to slide upward on the surface of the fixed rod 11, and the second-level lifting platform 22 is driven to rise. After the first-level screw driving assembly 6 is raised to the top, the second motor 8 is started to drive the second-level screw driving assembly 9 to move, and the second-level lifting platform 22 is raised. At this time, the second-level lifting platform 22 drives the second telescopic rod 13 to slide on the top of the first telescopic rod 12, and The lifting cylinder 10 is driven to move upward at the top of the first-level screw drive assembly 6 and raised to the limit. At this time, the first telescopic rod 12 and the second telescopic rod 13 are completely unfolded, and the lifting cylinder 10 is completely unfolded. When the first-level lifting platform 7 is raised, the first-level screw drive assembly 6 drives the transmission gear 14 to rotate, drives the top rod 16 to move downward in the fixed frame 15, drives the top seat 17 to move downward, abuts against the ground, lifts up the vehicle body 1 for support, prevents the wheels from sliding, and multi-stage lifting integrates the lifting mechanism in a small space, the lifting height is higher, and supports the vehicle body 1 while lifting, enhances its stability when transporting objects, and does not cause the object to tilt.

[0026] Two second motors 8 are provided and symmetrically distributed on both sides of the first-level lifting platform 7 . Two fixing rods 11 are provided and symmetrically distributed on both sides of the first-level lifting platform 7 .

[0027] Two push rods 16 are provided and are symmetrically distributed.

[0028] The surface of the secondary lifting platform 22 is provided with a limit frame 2, and the bottom of the limit frame 2 is fixedly connected with a protective ring 3. The protective ring 3 is provided on the surface of the vehicle body 1 and is folded. The protective ring 3 is made of elastic material. The protective ring 3 protects the inside of the vehicle body 1 and can be stretched according to the lifting of the vehicle body 1. When the protective ring 3 needs to be disassembled, the mounting bolts 20 are removed. At this time, the four mounting plates 19 are separated, and the limit frame 2 is lifted to remove the protective ring 3.

[0029] The bottom of the protective ring 3 is fixedly connected to a mounting plate 19, and the surface of the mounting plate 19 is provided with a contact step surface 21 that abuts against the surface of the vehicle body 1. There are four mounting plates 19, and they are all fixed on the four sides of the vehicle body 1 by mounting bolts 20. The four mounting plates 19 are assembled to form a rectangle. The protective ring 3 can be quickly disassembled through the assembled mounting plates 19 when maintenance is required without affecting normal work.

[0030] When the secondary lifting platform 22 is raised to the highest point, the protection ring 3 is stretched to the limit.

[0031] When in use, the first-level lifting platform 7 is raised, the first motor 5 is started to drive the first-level screw drive assembly 6 to move, and the first-level lifting platform 7 is raised. When the first-level lifting platform 7 is raised, the first telescopic rod 12 is driven to slide upward on the surface of the fixed rod 11, and the second-level lifting platform 22 is raised at this time. After the first-level screw drive assembly 6 is raised to the top, the second motor 8 is started to drive the second-level screw drive assembly 9 to move, and the second-level lifting platform 22 is raised. At this time, the second-level lifting platform 22 drives the second telescopic rod 13 to slide on the top of the first telescopic rod 12, and drives the lifting cylinder 10 to move upward on the top of the first-level screw drive assembly 6, and rises to the limit. At this time, the first telescopic rod 1 2 and the second telescopic rod 13 are fully unfolded, and the lifting cylinder 10 is fully unfolded. When the first-level lifting platform 7 is raised, the first-level screw driving assembly 6 drives the transmission gear 14 to rotate, drives the top rod 16 to move downward in the fixing frame 15, drives the top seat 17 to move downward, abuts against the ground, lifts up the vehicle body 1 for support, and prevents the wheels from sliding. When the first-level lifting platform 7 and the second-level lifting platform 22 move, the protective ring 3 is driven to rise. The protective ring 3 protects the inside of the vehicle body 1 and can be stretched according to the lifting of the vehicle body 1. When the protective ring 3 needs to be disassembled, the mounting bolts 20 are removed. At this time, the four mounting plates 19 are separated, and the limit frame 2 is lifted to remove the protective ring 3.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A latent lifting AGV based on a three-screw structure, comprising a vehicle body (1), the top of the vehicle body (1) being movably connected to a secondary lifting platform (22), characterized in that: The inner cavity of the vehicle body (1) is fixedly connected to a fixed rod (11), the top end of the fixed rod (11) is slidably connected to a first telescopic rod (12), the surface of the first telescopic rod (12) is fixedly connected to a first-level lifting platform (7), the inner cavity of the vehicle body (1) is fixedly connected to a first motor (5), the first motor (5) drives a first-level screw drive assembly (6) through a gear set to drive the first-level lifting platform (7) to move up and down, the top of the first-level lifting platform (7) is fixedly connected to a second motor (8), the second motor (8) drives a second-level screw drive assembly (9) through a gear set to drive the second-level lifting platform (22) to move up and down, the surface of the first telescopic rod (12) is slidably connected to a second telescopic rod (13), the top end of the first-level screw drive assembly (6) is slidably connected to a lifting cylinder (10), the top end of the lifting cylinder (10) is fixedly connected to the bottom of the second-level lifting platform (22); The inner cavity of the vehicle body (1) is fixedly connected to a fixing frame (15), the inner cavity of the fixing frame (15) is slidably connected to a push rod (16), the surface of the push rod (16) is provided with tooth patterns that mesh with the surface of the transmission gear (14), the bottom end of the push rod (16) penetrates and extends to the bottom of the vehicle body (1) and is slidably connected to the inner cavity of the vehicle body (1), the bottom end of the push rod (16) is fixedly connected to a top seat (17), and the inner cavity of the vehicle body (1) is provided with a groove (18) that matches the surface of the top seat (17); Two push rods (16) are provided and are symmetrically distributed.

2. The three-wire structure-based latent lifting AGV according to claim 1 is characterized in that: The inner cavity of the vehicle body (1) is rotatably connected to a transmission gear (14), and the surface of the lifting rod of the primary screw drive assembly (6) is provided with tooth patterns that mesh with the surface of the transmission gear (14).

3. The three-wire structure-based latent lifting AGV according to claim 1 is characterized in that: Two second motors (8) are provided and are symmetrically distributed on both sides of the first-stage lifting platform (7); two fixing rods (11) are provided and are symmetrically distributed on both sides of the first-stage lifting platform (7).

4. The three-wire structure-based latent lifting AGV according to claim 1 is characterized in that: The surface of the secondary lifting platform (22) is sleeved with a limit frame (2), the bottom of the limit frame (2) is fixedly connected with a protective ring (3), the protective ring (3) is sleeved on the surface of the vehicle body (1) and is folded, and the protective ring (3) is made of elastic material.

5. The three-screw structure-based latent lifting AGV according to claim 4 is characterized in that: The bottom of the protective ring (3) is fixedly connected to a mounting plate (19), the surface of the mounting plate (19) is provided with a contact step surface (21) that abuts against the surface of the vehicle body (1), four mounting plates (19) are provided, and all are fixed to the four sides of the vehicle body (1) by mounting bolts (20), and the four mounting plates (19) are assembled to form a rectangle.

6. The three-screw structure-based latent lifting AGV according to claim 4 is characterized in that: When the secondary lifting platform (22) is raised to the highest position, the protective ring (3) is stretched to the limit.

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