A heavy-load AGV chassis structure

Abstract

The utility model relates to a heavy-load transport AGV, and in particular to a heavy-load AGV chassis structure, comprising a chassis frame, a driving wheel assembly device, a steering wheel assembly, a motor driving device, and a pneumatic brake system. The chassis frame comprises a middle frame, a left frame, and a right frame. The driving wheel assembly device is fixedly arranged at the rear end of the middle frame. The motor driving device is arranged on the middle frame, and the output end is connected with the input end of the driving wheel assembly device. The pneumatic brake system is arranged on the middle frame and is connected and arranged to match the driving wheel assembly device. A group of steering wheel assemblies are arranged at the front end of the left frame, and a group of steering wheel assemblies are arranged at the front end of the right frame. The driving wheel assembly device comprises two groups of driving wheels, one group of driving wheels is located at the rear end of the left frame, and the other group of driving wheels is located at the rear end of the right frame. A battery compartment is arranged in the middle area of ​​the left frame and the right frame.

Description

Technical Field

[0001] The utility model relates to a heavy-load transport type AGV, in particular to a heavy-load AGV chassis structure. Background Art

[0002] The existing heavy-duty AGV chassis drive structure usually adopts two forms. One is that the chassis is composed of four or more steering wheels; the other is that the chassis adopts the traditional automobile axle structure. The first form uses a steering wheel structure under heavy load conditions, and the required steering wheel size is large, the motor power is high, and the price is usually high; the second form uses a traditional axle form, and the chassis cannot achieve multiple steering forms. Under heavy load conditions, the steering assist uses an electric cylinder or electric steering gear, and the cost is also high. In actual applications, if the use site allows, a low-cost heavy-duty AGV can be used to achieve production needs. Summary of the invention

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide a heavy-duty AGV chassis structure that reduces costs while meeting vehicle chassis performance requirements.

[0004] The technical solution adopted by the utility model is:

[0005] A heavy-load AGV chassis structure includes a chassis frame, a driving wheel assembly, a steering wheel assembly, a motor drive device, and a pneumatic brake system. The chassis frame includes a middle frame, a left frame, and a right frame. The driving wheel assembly device is fixedly arranged at the rear end of the middle frame. The motor drive device is arranged on the middle frame, and the output end is connected with the input end of the driving wheel assembly device. The pneumatic brake system is arranged on the middle frame and is connected and arranged to match the driving wheel assembly device. A group of steering wheel assemblies are arranged at the front end of the left frame, and a group of steering wheel assemblies are arranged at the front end of the right frame. The driving wheel assembly device includes two groups of driving wheels, one group of driving wheels is located at the rear end of the left frame, and the other group of driving wheels is located at the rear end of the right frame. A battery compartment is arranged in the middle area of ​​the left frame and the right frame.

[0006] The middle frame includes a crossbeam mounting support frame and a middle frame C-shaped longitudinal beam. The C-shaped openings of the two groups of middle frame C-shaped longitudinal beams are arranged facing each other, and a number of crossbeam mounting support frames are arranged between the two groups of middle frame C-shaped longitudinal beams; the crossbeam mounting support frame includes a crossbeam frame, and the upper and lower ends of the crossbeam frame are provided with crossbeam L-shaped connecting pieces, and the crossbeam L-shaped connecting pieces are sleeved in the middle frame C-shaped longitudinal beam; the middle frame C-shaped longitudinal beam is provided with a number of connecting holes that match the mounting hole crossbeam L-shaped connecting pieces.

[0007] A traction seat is also arranged at the end of the middle frame, and the traction seat is fixedly arranged on the end cross beam frame.

[0008] A first L-shaped connecting beam is arranged on the side of the left frame, the first L-shaped connecting beam is arranged on the side connected to the middle frame, and the first L-shaped connecting beam is fastened with screws to the C-shaped longitudinal beam of the middle frame; a second L-shaped connecting beam is arranged on the side of the right frame, the second L-shaped connecting beam is arranged on the side connected to the middle frame, and the second L-shaped connecting beam is fastened with screws to the C-shaped longitudinal beam of the middle frame.

[0009] Two groups of second hanging seats are arranged on the upper end surface of the right frame, and two groups of first hanging seats are arranged on the upper end surface of the left frame. The first hanging seats and the second hanging seats are symmetrically arranged relative to the center line of the middle frame.

[0010] The driving wheel assembly device includes a swing frame, a gear box arranged at the bottom of the swing frame, a transmission arranged on the gear box, and driving wheels arranged on output shafts at both ends of the gear box. The swing frame includes a U-shaped mounting frame, a "J"-shaped bracket is arranged in the U-shaped mounting groove of the U-shaped mounting frame, shaft sleeves are arranged on the groove walls on both sides of the U-shaped mounting frame, a swing shaft is penetrated through the shaft sleeve, and the swing shaft rotates slightly left and right in the U-shaped mounting groove, the "J"-shaped bracket is fixed on the swing shaft, mounting plates are arranged at the bottom of both ends of the "J"-shaped bracket, and the gear box is fixed at the lower end of the mounting plate.

[0011] Beneficial effects of the utility model:

[0012] The utility model discloses a heavy-duty AGV chassis structure, in which the chassis frame is arranged as a split structure including a middle frame, a left frame, and a right frame. A driving wheel assembly device is arranged at the rear end of the middle frame, and a motor driving system 4 and a pneumatic brake system 5 are arranged in an effective order in the middle and front ends to ensure the center of gravity stability of the chassis frame. A steering wheel assembly is arranged at the front end of the left frame and the right frame to realize various steering forms of the AGV; driving wheels are placed at the rear end of the left frame and the right frame, and a battery compartment is arranged in the middle to ensure the endurance. The final output end of the motor driving system 4 is connected to the driving wheel assembly device, and the AGV is driven forward by a driving motor, saving driving costs. The components in the three frames of the chassis frame can be installed at the same time, and then assembled, which effectively improves the assembly efficiency and is convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the following is a preferred embodiment, and is accompanied by the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation to the utility model. For ordinary technicians in this field, other drawings can be obtained based on the following drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure;

[0015] Figure 2 for Figure 1 Bottom view of

[0016] Figure 3 It is a schematic diagram of the chassis frame structure;

[0017] Figure 4 It is a schematic diagram of the chassis frame connection structure;

[0018] Figure 5 It is a schematic diagram of the structure of the driving wheel assembly;

[0019] Figure 6 is a schematic diagram of a motor drive device;

[0020] Figure 7 Schematic diagram of the pneumatic brake system.

[0021] In the figure: 1-chassis frame, 101-middle frame, 1011-crossbeam frame, 1012-crossbeam L-shaped connector, 1013-middle frame C-shaped longitudinal beam, 1014-traction seat, 102-left frame, 1021-first battery compartment, 1022-first lifting seat, 1023-first L-shaped connecting beam, 103-right frame, 1031-second battery compartment, 1032-second lifting seat, 1033-second L-shaped connecting beam,

[0022] 2-driving wheel assembly, 201-swing frame, 2011-U-shaped mounting frame, 2012-"J" bracket, 2013-shaft sleeve, 2014-swing shaft, 2015-mounting plate, 202-gear box, 203-driving wheel, 204-transmission,

[0023] 3- Steering wheel set,

[0024] 4-motor drive device, 401-drive motor, 402-first transmission shaft, 403-gearbox, 404-second transmission shaft,

[0025] 5-Pneumatic brake system, 501-Intake air filter, 502-Electric air compressor, 503-Dryer and four-protection valve group, 504-Driving gas cylinder, 505-Solenoid valve group, 506-Air chamber assembly, 507-Parking gas cylinder, 508-Driving relay valve, 509-Parking relay valve. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0027] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0028] like Figure 1 , Figure 2 As shown, a heavy-duty AGV chassis structure includes a chassis frame 1, a driving wheel assembly 2, a steering wheel assembly 3, a motor driving device 4, and a pneumatic brake system 5. The driving wheel assembly 2 is arranged at the rear end of the chassis frame 1, the steering wheel assembly 3 is arranged at the front end of the chassis frame 1, and the motor driving device 4 and the pneumatic brake system 5 are arranged in the middle of the chassis frame 1. The motor driving system 4 and the pneumatic brake system 5 are matched with the driving wheel assembly.

[0029] like Figure 3 , Figure 4 As shown, the chassis frame 1 includes a middle frame 101, a left frame 102, and a right frame 103. The middle frame 101 includes a crossbeam mounting support frame and a middle frame C-shaped longitudinal beam 1013. The C-shaped openings of two groups of middle frame C-shaped longitudinal beams 1013 are arranged facing each other, and a plurality of crossbeam mounting support frames are arranged between the middle frame C-shaped longitudinal beams 1013 to form a middle frame structure. The crossbeam mounting support frame includes a crossbeam frame 1011. The upper and lower ends of the crossbeam frame 1011 are provided with crossbeam L-shaped connectors 1012, and the crossbeam L-shaped connectors 1012 are sleeved in the middle frame C-shaped longitudinal beam 1013. The middle frame C-shaped longitudinal beam 1013 is provided with a plurality of connection holes matching the crossbeam L-shaped connectors 1012, and the crossbeam mounting support frame can adjust its installation position and installation quantity on the middle frame C-shaped longitudinal beam 1013. The number of beam mounting support frames can be set based on the stability and load-bearing capacity of the frame structure and the arrangement of other components to be installed. The middle frame of this embodiment is provided with seven groups of beam mounting support frames, which are used to effectively arrange and install the driving wheel assembly device 2, the motor drive device 4, and the pneumatic brake system 5. The end of the middle frame 101 is also provided with a traction seat 1014, which is fixedly arranged on the end beam frame 1011 and is used to tow and move the chassis frame 1.

[0030] like Figure 3 , Figure 4As shown, a left frame 102 is arranged on the left side of the middle frame 101, and a first L-shaped connecting beam 1023 is arranged on the side of the left frame 102. The first L-shaped connecting beam 1023 is arranged on the side connected to the middle frame 101, and the first L-shaped connecting beam 1023 is screwed and connected to the C-shaped longitudinal beam 1013 of the middle frame. Two groups of first hanging seats 1022 are arranged on the upper end surface of the left frame 102 for hanging and installation. A right frame 103 is arranged on the right side of the middle frame 101, and a second L-shaped connecting beam 1033 is arranged on the side of the right frame 103. The second L-shaped connecting beam 1033 is arranged on the side connected to the middle frame 101, and the second L-shaped connecting beam 1033 is screwed and connected to the C-shaped longitudinal beam 1013 of the middle frame. Two groups of second hanging seats 1032 are arranged on the upper end surface of the right frame 103 for hanging and installation. The first hoisting seat 1022 and the second hoisting seat 1032 are symmetrically arranged relative to the center line of the middle frame 101 to ensure the stability of the chassis frame 1 during the hoisting process.

[0031] like Figure 1 As shown, a steering wheel group 3 is arranged at the front end area of ​​the left frame 102, a driving wheel group 203 is arranged at the rear end area, and a first battery compartment 1021 is arranged at the middle area; a steering wheel group 3 is arranged at the front end area of ​​the right frame 103, a driving wheel group 203 is arranged at the rear end area, and a second battery compartment 1031 is arranged at the middle area.

[0032] like Figure 5 As shown, the driving wheel assembly device 2 includes a swing frame 201, a gear box 202 arranged at the bottom of the swing frame 201, a transmission 204 arranged on the gear box 202, and a driving wheel 203 arranged on the output shafts at both ends of the gear box 202. The swing frame 201 is fixedly arranged at the rear end of the middle frame 101, and the swing frame 201 includes a U-shaped mounting frame 2011, and a "Ji"-shaped bracket 2012 is arranged in the U-shaped mounting groove of the U-shaped mounting frame 2011, and a shaft sleeve 2013 is arranged on the groove walls on both sides of the U-shaped mounting frame 2011. A swing shaft 2014 is penetrated in the shaft sleeve 2013, and the swing shaft 2014 can be slightly rotated left and right in the U-shaped mounting groove. The "Ji"-shaped bracket 2012 is fixedly arranged on the swing shaft 2014, and a mounting plate 2015 is arranged at the bottom of both ends of the "Ji"-shaped bracket 2012, and the gear box 202 is fixedly arranged at the lower end of the mounting plate 2015.

[0033] like Figure 6 , Figure 2As shown, the motor drive device 4 includes a drive motor 401, a first transmission shaft 402, a gearbox 403, and a second transmission shaft 404. The first transmission shaft 402 is arranged at the output shaft end of the drive motor 401, and the other end of the first transmission shaft 402 is connected to the input shaft end of the gearbox 403. The second transmission shaft 404 is arranged at the output shaft end of the gearbox 403, and the other end of the second transmission shaft 404 is connected to the input end of the transmission 204, and the transmission 204 is arranged on the gearbox 202. The drive motor 401 and the gearbox 403 are fixedly arranged on the middle frame 101.

[0034] like Figure 7 As shown, the pneumatic brake system includes an air intake air filter 501, an electric air compressor 502, a dryer and a four-protection valve group 503, a driving gas cylinder 504, a solenoid valve group 505, an air chamber assembly 506, a parking gas cylinder 507, a driving relay valve 508, and a parking relay valve 509. The output end of the air intake filter 501 is connected to the input end of the electric air compressor 502, the output end of the electric air compressor 502 is connected to the input end of the dryer and the four-protection valve group 503, the output end of the dryer and the four-protection valve group 503 is connected to the input end of the driving gas cylinder 504 and the parking gas cylinder 507, the output end of the driving gas cylinder 504 and the parking gas cylinder 507 is connected to the input end of the electromagnetic valve group 505, the driving relay valve 508 and the parking relay valve 509 are connected to the control port, the output port of the driving relay valve 508 and the parking relay valve 509 is connected to the input port of the air chamber assembly 506, and the output assembly of the air chamber assembly 506 is connected to the brake assembly provided on the driving wheel assembly device 2. When driving, the various components cooperate with each other to control the stop of the AGV. The air source and filter assembly 501, the electric air compressor 502, the four-protection valve assembly 503, the driving gas cylinder 504, the solenoid valve assembly 505, and the parking gas cylinder 507 are fixedly arranged on the middle frame 101, and the air chamber assembly 506 is fixedly arranged on the driving wheel assembly device 2.

[0035] A heavy-duty AGV chassis structure of this embodiment, whose chassis frame 1 includes a middle frame 101, a left frame 102, and a right frame 103. During installation and assembly, the three parts of the frame can be modularized and assembled simultaneously: the driving wheel assembly device 2 is arranged at the rear end of the middle frame 101, and the components of the motor driving device 4 and the pneumatic brake system 5 are effectively arranged and arranged at the front end and middle area of ​​the middle frame 101 to ensure the center of gravity stability of the chassis frame. The corresponding steering wheel assembly 3 and other accessories are arranged in the left frame 102 and the right frame 103. After the corresponding accessories are installed in the middle frame 101, the left frame 102, and the right frame 103, the left frame 102 and the right frame 103 are locked and fixed on both sides of the middle frame 101 to ensure efficient assembly.

Claims

1. A heavy-duty AGV chassis structure, comprising a chassis frame (1), a driving wheel assembly (2), a steering wheel assembly (3), a motor driving device (4), and a pneumatic brake system (5), characterized in that: The chassis frame (1) comprises a middle frame (101), a left frame (102), and a right frame (103); the driving wheel assembly device (2) is fixedly arranged at the rear end of the middle frame (101); the motor driving device (4) is arranged on the middle frame (101), and the output end is connected to the input end of the driving wheel assembly device (2); the pneumatic brake system (5) is arranged on the middle frame (101), and is matched and connected with the driving wheel assembly device (2); a group of steering wheel assemblies (3) are arranged at the front end of the left frame (102), and a group of steering wheel assemblies (3) are arranged at the front end of the right frame (103); the driving wheel assembly device (2) comprises two groups of driving wheels (203), one group of driving wheels (203) is located at the rear end of the left frame (102), and the other group of driving wheels (203) is located at the rear end of the right frame (103); and a battery compartment is arranged in the middle area of ​​the left frame (102) and the right frame (103); The middle frame (101) comprises a crossbeam mounting support frame and a middle frame C-shaped longitudinal beam (1013); the C-shaped openings of two groups of middle frame C-shaped longitudinal beams (1013) are arranged facing each other, and a plurality of crossbeam mounting support frames are arranged between the two groups of middle frame C-shaped longitudinal beams (1013); the crossbeam mounting support frame comprises a crossbeam frame (1011); the crossbeam frame (1011) is provided with a crossbeam L-shaped connecting piece (1012) at the upper and lower ends, and the crossbeam L-shaped connecting piece (1012) is sleeved in the middle frame C-shaped longitudinal beam (1013); and the middle frame C-shaped longitudinal beam (1013) is provided with a plurality of connecting holes matching the mounting hole crossbeam L-shaped connecting piece (1012).

2. A heavy-duty AGV chassis structure according to claim 1, characterized in that: A traction seat (1014) is also provided at the end of the middle frame (101), and the traction seat (1014) is fixedly arranged on the end crossbeam frame (1011).

3. The heavy-duty AGV chassis structure according to claim 1, characterized in that: The left frame (102) is provided with a first L-shaped connecting beam (1023) on the side, the first L-shaped connecting beam (1023) is provided on the side connected to the middle frame (101), and the first L-shaped connecting beam (1023) is screw-fastened to the middle frame C-shaped longitudinal beam (1013); the right frame (103) is provided with a second L-shaped connecting beam (1033) on the side, the second L-shaped connecting beam (1033) is provided on the side connected to the middle frame (101), and the second L-shaped connecting beam (1033) is screw-fastened to the middle frame C-shaped longitudinal beam (1013).

4. The heavy-duty AGV chassis structure according to claim 1, characterized in that: The upper end surface of the right frame (103) is provided with two groups of second lifting seats (1032), and the upper end surface of the left frame (102) is provided with two groups of first lifting seats (1022), and the first lifting seats (1022) and the second lifting seats (1032) are symmetrically arranged relative to the midline of the middle frame (101).

5. The heavy-duty AGV chassis structure according to claim 1, characterized in that: The driving wheel assembly device (2) comprises a swing frame (201), a gear box (202) arranged at the bottom of the swing frame (201), a transmission (204) arranged on the gear box (202), and driving wheels (203) arranged on output shafts at both ends of the gear box 202. The swing frame (201) comprises a U-shaped mounting frame (2011), a "J"-shaped bracket (2012) is arranged in a U-shaped mounting groove of the U-shaped mounting frame (2011), and the U-shaped mounting frame (2011) is provided with a U-shaped mounting groove. A shaft sleeve (2013) is arranged on the groove walls on both sides of the shaft sleeve (2011), a swing shaft (2014) is arranged through the shaft sleeve (2013), the swing shaft (2014) slightly rotates left and right in the U-shaped installation groove, the "J"-shaped bracket (2012) is fixedly arranged on the swing shaft (2014), the bottom of both ends of the "J"-shaped bracket (2012) is provided with a mounting plate (2015), and the lower end of the mounting plate (2015) is fixedly arranged with a gear box (202).

Images