A Forklift Wheel Hub Nut Tightening Device with Nut Auxiliary Positioning

Abstract

The present invention discloses a fork wheel hub nut tightening device with nut auxiliary positioning, which relates to the technical field of nut tightening devices. Its technical solution includes a device bracket. A double-axis transmission mechanism is fixedly connected to the top of the device bracket. An installation plate is fixedly connected to the bottom of the double-axis transmission mechanism. A propulsion mechanism is fixedly connected to the front end of the installation plate. A tightening mechanism is fixedly connected to the side of the propulsion mechanism away from the installation plate. In the present invention, the tightening mechanism is roughly positioned by the double-axis transmission mechanism first. Then, the telescopic mechanisms arranged at the upper and lower ends of the positioning ring are started. The clamping mechanism arranged at the front end is driven by the telescopic mechanisms to extend forward until the clamping mechanism moves to both ends of the forklift tire. Then, the clamping mechanism is started to clamp the tire, and thus the tightening mechanism arranged at the center of the positioning ring is positioned, so that the nut sleeves arranged in the tightening mechanism can correspond to the nuts on the hub one by one, greatly improving the efficiency of the tightening mechanism in positioning the nuts.

Description

Technical Field

[0001] The present invention relates to the technical field of nut tightening devices, and particularly to a forklift hub nut tightening device with nut auxiliary positioning. Background Art

[0002] With the rapid development of industrial automation, forklifts, as important logistics transportation tools, have received increasing attention for their safety and efficiency. During the tightening process of the hub nuts of forklifts, traditional manual operations often suffer from problems such as low efficiency, large errors, and high labor intensity, directly affecting the operation safety and reliability of forklifts. To solve these problems, a forklift hub nut tightening device with nut auxiliary positioning has emerged. This device combines modern mechanical design and automatic control technology, enabling precise positioning and uniform tightening of hub nuts. Through an automated program, the device can effectively reduce human errors, ensure that each nut is properly stressed, thereby improving the overall performance and service life of the forklift. In addition, the application of the device significantly reduces the labor intensity of operators and improves work efficiency, providing a new solution for the maintenance of forklifts.

[0003] After retrieval, the invention patent with Chinese patent number CN117773548A discloses a forklift hub nut tightening device with nut auxiliary positioning, including a device main body, a lifting mechanism, a working plate, a workbench, and a station plate. A ring-shaped support platform is provided on the station plate, and the support platform fits and supports the hub. Inside the support platform, there are a connecting shaft rod, a nut sleeve, a limiting sleeve, and a positioning shaft rod. At the center of the inner side of the support platform, there is also a rotary cylinder. The end of the rotating shaft of the rotary cylinder is provided with a rotating block, and multiple through holes are provided on the side wall of the rotating block. Brushes are arranged in the through holes, and the brushes contact the nut to perform position correction work on the nut. The nut is limited by a resilient limiting shaft rod, and the side wall surface of the nut is reciprocally swept by the brush to give the nut a rotational force, assisting the nut to quickly enter the nut sleeve, accelerating the process, and at the same time, it can also avoid the phenomenon that the special bolt and the nut cannot be aligned. While protecting the device, it can also solve the problem that the nut cannot accurately enter the limiting space. Compared with the prior art, the invention patent with Chinese patent number CN117773548A solves the problem that most of the existing workpiece fixing devices still prioritize thinking about the nut tightening work and have not considered the preparation work for the nut.

[0004] However, during the actual use of the above device, before the nut tightening machine performs the tightening work, it needs to continuously adjust its position to position several nuts on the forklift hub. However, this positioning process is generally slow and prone to deviation, thus affecting the nut tightening work. Therefore, a forklift hub nut tightening device with nut auxiliary positioning is proposed. Summary of the Invention

[0005] The object of the present invention is to solve the disadvantages in the prior art that before the nut tightening machine performs the tightening work, it is necessary to continuously adjust the position to position several nuts on the forklift hub, but this positioning process is generally slow and prone to deviation, thus affecting the nut tightening work, and to propose a nut tightening device for a forklift hub with nut auxiliary positioning.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A nut tightening device for a forklift hub with nut auxiliary positioning, including a device bracket, a double-axis transmission mechanism is fixedly connected to the top of the device bracket, an installation plate is fixedly connected to the bottom of the double-axis transmission mechanism, a propulsion mechanism is fixedly connected to the front end of the installation plate, a tightening mechanism is fixedly connected to the side of the propulsion mechanism away from the installation plate, and an auxiliary positioning mechanism is arranged around the tightening mechanism;

[0008] The auxiliary positioning mechanism includes a positioning ring surrounding the tightening mechanism, the positioning ring is fixedly connected to the installation plate, telescopic components are symmetrically arranged at the upper and lower ends of the positioning ring, and a clamping component is fixedly connected to the front end of the telescopic component. The clamping components arranged at the upper and lower ends can clamp the forklift tire to assist the tightening mechanism in positioning the nut position.

[0009] The above technical solution further includes:

[0010] The telescopic component includes telescopic shells symmetrically fixedly connected to the upper and lower ends of the positioning ring, a fourth motor is arranged inside the telescopic shell, and a control component is arranged at the output end of the fourth motor.

[0011] The control component includes a worm arranged at the output end of the fourth motor, the worm is rotatably connected to the telescopic shell, the worm is meshed with a worm gear, the worm gear is rotatably connected to the telescopic shell, a fifth gear is fixedly connected to the side of the worm gear away from the telescopic shell, the fifth gear is meshed with a transmission rack, the transmission rack is slidably connected to the telescopic shell, and a clamping shell is fixedly connected to the end of the transmission rack away from the telescopic shell.

[0012] The clamping mechanism includes a clamping shell fixedly connected to the transmission rack, a fifth gear is arranged inside the clamping shell, a sixth gear is arranged at the output end of the fifth gear, the sixth gear is meshed with a seventh gear, the seventh gear is rotatably connected to the clamping shell, the seventh gear is threadedly connected to a third lead screw, and a clamping piece is rotatably connected to the bottom of the third lead screw.

[0013] The propulsion mechanism includes a propulsion shell fixedly connected to the installation plate, a second motor is arranged inside the propulsion shell, and a propulsion component is arranged at the output end of the second motor.

[0014] The propulsion assembly includes a first gear provided at the output end of the second motor. The first gear is meshed with a second gear, and the second gear is threadedly connected to a second lead screw. The second lead screw is rotatably connected to a tightening housing on the side away from the mounting plate.

[0015] The tightening mechanism includes a tightening housing rotatably connected to the second lead screw. A third motor is provided on the side of the tightening housing close to the second lead screw, and a tightening assembly is provided at the output end of the third motor.

[0016] The tightening assembly includes a rotating shaft provided at the output end of the third motor. Three third gears are fixedly penetrated through the rotating shaft. Five fourth gears are meshed around the third gears, and a nut sleeve is fixedly penetrated through the fourth gears.

[0017] The dual-axis transmission mechanism includes a transmission housing fixedly connected to the top of the device bracket. A first motor is provided on the side wall of the transmission housing. A first lead screw is provided at the output end of the first motor. The first lead screw is threadedly connected to a transmission member. The front end of the transmission member is fixedly connected to an electric telescopic rod, and the bottom of the electric telescopic rod is fixedly connected to a mounting plate.

[0018] The present invention has the following beneficial effects:

[0019] In the present invention, before the device is used, it is necessary to first position the nuts on the forklift hub. First, the tightening mechanism is roughly positioned through the dual-axis transmission mechanism. Then, the telescopic mechanisms provided at the upper and lower ends of the positioning ring are started. The telescopic mechanisms drive the clamping mechanisms provided at the front ends to extend forward until the clamping mechanisms move to both ends of the forklift tire. Then, the clamping mechanisms are started to clamp the tire, and further position the tightening mechanism provided at the center of the positioning ring, so that the nut sleeves provided in the tightening mechanism can correspond to the nuts on the hub one by one, greatly improving the efficiency of positioning the nuts by the tightening mechanism.

[0020] In the present invention, the dual-axis transmission mechanism provided at the top of the device bracket can drive the tightening mechanism to move flexibly, thus effectively improving the preliminary positioning of the tightening mechanism. Moreover, after the positioning is completed, by starting the second motor in the propulsion mechanism, the tightening mechanism can also be driven to advance steadily, so as to sleeve the nut into the nut sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of a nut tightening device for a forklift hub with nut auxiliary positioning proposed by the present invention;

[0022] Figure 2 is a three-dimensional structural diagram of the present invention;

[0023] Figure 3 is a first structural diagram of the present invention;

[0024] Figure 4 This is the second structural schematic diagram of the present invention;

[0025] Figure 5 This is the third structural schematic diagram of the present invention;

[0026] Figure 6 This is the fourth structural schematic diagram of the present invention;

[0027] Figure 7 This is the fifth structural schematic diagram of the present invention;

[0028] Figure 8 This is the sixth structural schematic diagram of the present invention;

[0029] Figure 9 This is the seventh structural schematic diagram of the present invention.

[0030] In the figure: 1. Device bracket; 2. Transmission housing; 3. Electric telescopic rod; 4. Mounting plate; 5. Telescopic housing; 6. Positioning ring; 7. Clamping housing; 8. First motor; 9. First lead screw; 10. Transmission member; 11. Propelling housing; 12. Tightening housing; 13. Clamping member; 14. Second motor; 15. First gear; 16. Second gear; 17. Second lead screw; 18. Third motor; 19. Nut sleeve; 20. Third gear; 21. Fourth gear; 22. Rotating shaft; 23. Worm; 24. Worm gear; 25. Fifth gear; 26. Fourth motor; 27. Transmission rack; 28. Fifth motor; 29. Sixth gear; 30. Seventh gear; 31. Third lead screw. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0032] As Figures 1 - 9 shown, a nut tightening device for a forklift wheel hub with nut auxiliary positioning proposed by the present invention includes a device bracket 1. A double-shaft transmission mechanism is fixedly connected to the top of the device bracket 1. An installation plate 4 is fixedly connected to the bottom of the double-shaft transmission mechanism. A propulsion mechanism is fixedly connected to the front end of the installation plate 4. A tightening mechanism is fixedly connected to the side of the propulsion mechanism away from the installation plate 4. An auxiliary positioning mechanism is disposed around the tightening mechanism;

[0033] The auxiliary positioning mechanism includes a positioning ring 6 surrounding the tightening mechanism. The positioning ring 6 is fixedly connected to the mounting plate 4. Telescopic components are symmetrically arranged at the upper and lower ends of the positioning ring 6. The front ends of the telescopic components are also fixedly connected with clamping components. The clamping components arranged at the upper and lower ends can clamp the forklift tire to assist in positioning the position of the nut of the tightening mechanism.

[0034] The telescopic component includes telescopic shells 5 symmetrically and fixedly connected to the upper and lower ends of the positioning ring 6. A fourth motor 26 is arranged inside the telescopic shell 5, and a control component is arranged at the output end of the fourth motor 26.

[0035] The control component includes a worm 23 arranged at the output end of the fourth motor 26. The worm 23 is rotatably connected to the telescopic shell 5. The worm 23 is meshed with a worm gear 24. The worm gear 24 is rotatably connected to the telescopic shell 5. A fifth gear 25 is fixedly connected to the side of the worm gear 24 away from the telescopic shell 5. The fifth gear 25 is meshed with a transmission rack 27. The transmission rack 27 is slidably connected to the telescopic shell 5. One end of the transmission rack 27 away from the telescopic shell 5 is fixedly connected with a clamping shell 7.

[0036] The clamping mechanism includes a clamping shell 7 fixedly connected to the transmission rack 27. A fifth motor 28 is arranged inside the clamping shell 7. A sixth gear 29 is arranged at the output end of the fifth motor 28. The sixth gear 29 is meshed with a seventh gear 30. The seventh gear 30 is rotatably connected to the clamping shell 7. A third lead screw 31 is threadedly connected to the seventh gear 30. The bottom of the third lead screw 31 is rotatably connected to a clamping piece 13.

[0037] The tightening mechanism includes a tightening shell 12 rotatably connected to the second lead screw 17. A third motor 18 is arranged on the side of the tightening shell 12 close to the second lead screw 17. A tightening component is arranged at the output end of the third motor 18. The tightening component includes a rotating shaft 22 arranged at the output end of the third motor 18. Three third gears 20 are fixedly penetrated through the rotating shaft 22. Five fourth gears 21 are meshed around the third gears 20. A nut sleeve 19 is fixedly penetrated through the fourth gears 21.

[0038] In this embodiment, the forklift wheel is transported by a conveying device and vertically moved to the front end of the device. Then, through the dual-axis transmission mechanism arranged in the device, the tightening mechanism can be preliminarily positioned. After the preliminary positioning is completed, the fourth motor 26 arranged in the telescopic housing 5 is started. The rotation of the fourth motor 26 can drive the worm 23 to rotate. The rotation of the worm 23 can drive the worm wheel 24 and the fifth gear 25 fixedly connected to the worm wheel 24 to rotate. The rotation of the fifth gear 25 can drive the meshing-connected transmission rack 27 to move. The movement of the transmission rack 27 can drive the clamping mechanism arranged at the front end to gradually approach the forklift tire. When the clamping mechanism moves to the upper and lower ends of the tire, the fifth motor 28 in the clamping housing 7 is started. The rotation of the fifth motor 28 can drive the sixth gear 29 to rotate. The rotation of the sixth gear 29 can drive the seventh gear 30 to rotate. The rotation of the seventh gear 30 can drive the third lead screw 31 to move, and then drive the clamping members 13 on the upper and lower sides to move inward, thereby clamping the tire, making the tightening mechanism located at the middle position of the clamping mechanism coincide with the circle of the tire, so as to assist the tightening mechanism to position the nut on the wheel hub;

[0039] After the positioning is completed, the propulsion mechanism drives the tightening mechanism to approach the wheel, so that the nut sleeve 19 sleeves the nut. Then, the third motor 18 is started. The rotation of the third motor 18 can drive the rotating shaft 22 to rotate. The rotation of the rotating shaft 22 can drive the three third gears 20 to rotate. The rotation of the third gears 20 can drive the five fourth gears 21 meshingly connected around to rotate. The rotation of the fourth gears 21 can drive the fixedly connected nut sleeve 19 to rotate, thereby tightening the nut. Embodiment

[0040] As Figures 1 - 9 shown, the propulsion mechanism includes a propulsion housing 11 fixedly connected to the mounting plate 4. A second motor 14 is arranged inside the propulsion housing 11. A propulsion assembly is arranged at the output end of the second motor 14. The propulsion assembly includes a first gear 15 arranged at the output end of the second motor 14. The first gear 15 is meshingly connected with a second gear 16. The second gear 16 is threadedly connected with a second lead screw 17. The second lead screw 17 is rotatably connected to a tightening housing 12 on the side away from the mounting plate 4;

[0041] The dual-axis transmission mechanism includes a transmission housing 2 fixedly connected to the top of the device bracket 1. A first motor 8 is arranged on the side wall of the transmission housing 2. A first lead screw 9 is arranged at the output end of the first motor 8. The first lead screw 9 is threadedly connected with a transmission member 10. The front end of the transmission member 10 is fixedly connected with an electric telescopic rod 3. The bottom of the electric telescopic rod 3 is fixedly connected with a mounting plate 4.

[0042] In this embodiment, during use, the first motor 8 provided on the side wall of the transmission housing 2 is started to drive the first lead screw 9 to rotate. The rotation of the first lead screw 9 drives the threaded connection of the transmission member 10 to move left and right, and the movement of the transmission member 10 drives the electric telescopic rod 3 fixedly connected to the front end to also move. The electric telescopic rod 3 can also be telescoped up and down. By driving the electric telescopic rod 3 that can be telescoped up and down to move left and right, the tightening mechanism provided at the bottom can achieve flexible movement on the two axes, thereby effectively improving the positioning speed of the tightening mechanism and the working efficiency of the device. After the tightening mechanism completes positioning, the second motor 14 in the propulsion housing 11 is started to drive the first gear 15 to rotate. The rotation of the first gear 15 drives the second gear 16 to also rotate. The rotation of the second gear 16 drives the second lead screw 17 connected by threads to move forward, thereby driving the tightening mechanism to move steadily towards the wheel and fitting the nut on the hub into the nut sleeve 19.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A forklift wheel hub nut tightening device with nut auxiliary positioning, comprising a device bracket (1), characterized in that: The top of the device bracket (1) is fixedly connected to a double-axis transmission mechanism, the bottom of the double-axis transmission mechanism is fixedly connected to a mounting plate (4), the front end of the mounting plate (4) is fixedly connected to a propulsion mechanism, the propulsion mechanism is fixedly connected to a tightening mechanism on a side away from the mounting plate (4), and an auxiliary positioning mechanism is arranged around the outer periphery of the tightening mechanism; The auxiliary positioning mechanism comprises a positioning ring (6) surrounding the outer periphery of the tightening mechanism, the positioning ring (6) being fixedly connected to the mounting plate (4), the positioning ring (6) being symmetrically provided with telescopic components at the upper and lower ends, the front end of the telescopic components being fixedly connected with a clamping component, the clamping components provided at the upper and lower ends can clamp the forklift tire, and the auxiliary tightening mechanism can locate the nut position; The telescopic assembly comprises a telescopic housing (5) symmetrically fixedly connected to the upper and lower ends of a positioning ring (6); a fourth motor (26) is arranged inside the telescopic housing (5); and a control assembly is arranged at the output end of the fourth motor (26); The control assembly comprises a worm (23) arranged at the output end of the fourth motor (26), the worm (23) being rotationally connected to the telescopic housing (5), the worm (23) being meshingly connected to a worm wheel (24), the worm wheel (24) being rotationally connected to the telescopic housing (5), a fifth gear (25) being fixedly connected to the side of the worm wheel (24) away from the telescopic housing (5), the fifth gear (25) being meshingly connected to a transmission rack (27), the transmission rack (27) being slidably connected to the telescopic housing (5), and a clamping assembly being fixedly connected to the end of the transmission rack (27) away from the telescopic housing (5); The clamping assembly comprises a clamping housing (7) fixedly connected to a transmission rack (27); a fifth motor (28) is arranged inside the clamping housing (7); a sixth gear (29) is arranged at an output end of the fifth motor (28); the sixth gear (29) is meshingly connected to a seventh gear (30); the seventh gear (30) is rotationally connected to the clamping housing (7); the seventh gear (30) is threadedly connected to a third screw rod (31); and the bottom of the third screw rod (31) is rotationally connected to a clamping member (13); The tightening mechanism comprises a tightening housing (12) rotatably connected to the second screw rod (17); a third motor (18) is arranged on a side of the tightening housing (12) close to the second screw rod (17); and a tightening assembly is arranged at an output end of the third motor (18); The tightening assembly comprises a rotating shaft (22) arranged at the output end of the third motor (18), three third gears (20) being fixedly passed through the rotating shaft (22), five fourth gears (21) being meshingly connected around the third gears (20), and a nut sleeve (19) being fixedly passed through the interior of the fourth gears (21).

2. A forklift wheel hub nut tightening device with nut auxiliary positioning according to claim 1, characterized in that: The propulsion mechanism comprises a propulsion housing (11) fixedly connected to the mounting plate (4), a second motor (14) being arranged inside the propulsion housing (11), and a propulsion assembly being arranged at an output end of the second motor (14).

3. The forklift wheel hub nut tightening device with nut auxiliary positioning according to claim 2, characterized in that: The propulsion assembly comprises a first gear (15) arranged at the output end of the second motor (14), the first gear (15) being meshingly connected to a second gear (16), the second gear (16) being threadedly connected to a second screw rod (17), and the second screw rod (17) being rotatably connected to a tightening mechanism at a side away from the mounting plate (4).

4. The forklift wheel hub nut tightening device with nut auxiliary positioning according to claim 1, characterized in that: The dual-axis transmission mechanism comprises a transmission housing (2) fixedly connected to the top of a device bracket (1), a first motor (8) being arranged at a side wall of the transmission housing (2), a first screw rod (9) being arranged at an output end of the first motor (8), a transmission member (10) being threadedly connected to the first screw rod (9), a front end of the transmission member (10) being fixedly connected to an electric telescopic rod (3), and a mounting plate (4) being fixedly connected to the bottom of the electric telescopic rod (3).

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