A walking device that converts sliding friction into rolling friction

Abstract

The present invention discloses a walking device that converts sliding friction into rolling friction, including a walking mechanism and a driving mechanism, wherein the walking mechanism includes a support, a roller, an eccentric shaft, a track, and a rotating rod, wherein the support is provided with a plurality of eccentric shafts, the eccentric shafts are provided with rollers, the rollers cooperate with the laid track, at least one end of the eccentric shaft is provided with a rotating rod, and the other end of the eccentric shaft is synchronously connected. The walking device effectively reduces the friction resistance during the movement process.

Description

Technical Field

[0001] The invention belongs to the field of tooling, and in particular relates to a walking device which converts sliding friction into rolling friction. Background Art

[0002] At present, the bearings are generally in surface-to-surface contact when moving on the track, mainly overcoming sliding friction resistance. The sliding friction coefficient of steel is 0.15, while the rolling friction coefficient of steel is 0.05. Taking a 600kg bearing as an example, the sliding friction is about 90kg friction force, while the rolling friction is about 30kg friction force. After the conversion, the friction resistance that needs to be overcome during movement can be effectively reduced, making it easier to achieve driving. Summary of the invention

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a walking device that converts sliding friction into rolling friction, and the walking device effectively reduces the friction resistance during the movement process.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a walking device that converts sliding friction into rolling friction, comprising a walking mechanism and a driving mechanism, wherein the walking mechanism comprises a support, a roller, an eccentric shaft, a track, and a rotating rod, wherein a plurality of eccentric shafts are passed through the support, and rollers are arranged on the eccentric shafts, and the rollers cooperate with the laid track, and a rotating rod is arranged at the end of at least one eccentric shaft, and the other end of the eccentric shaft is synchronously connected;

[0005] The driving mechanism includes a handwheel, a handwheel shaft, a driving gear, a transmission gear, a transmission sleeve, a transmission shaft, a driving shaft, a traveling gear and a rack. A driving shaft is arranged in the support, one end of the driving shaft is rotatably arranged in the support, and the other end is connected to the transmission sleeve by a key and to the transmission shaft by a thread. The driving shaft is passed through the transmission sleeve and is connected to the transmission sleeve by a key. The transmission sleeve is arranged in the mounting sleeve through a transmission bearing, and the mounting sleeve is passed through the support. A spring in a compressed state is provided between the transmission shaft and the transmission sleeve, a clamping screw is provided on the transmission shaft, a spring pin is provided on the clamping screw, a countersunk hole matching the spring pin is provided on the transmission shaft, a transmission gear is provided outside the transmission sleeve, the handwheel is connected to the support through the handwheel shaft, a driving gear is provided on the handwheel shaft, the driving gear is meshed with the transmission gear, a traveling gear is provided on the driving shaft, and a rack that can mesh with the traveling gear is provided on the track.

[0006] In the above technical solution, the eccentric shafts are synchronously connected via a connecting rod mechanism.

[0007] In the above technical solution, the eccentric shaft is connected to the support through a tapered roller bearing and an eccentric bearing pressure plate.

[0008] In the above technical solution, a deep groove ball bearing, a roller bearing pressure plate and a roller fixing nut are provided between the roller and the eccentric shaft.

[0009] In the above technical solution, a rotating rod fixing pin is provided between the support and the rotating rod.

[0010] In the above technical solution, a track pad and a track guide plate are provided on the track.

[0011] In the above technical solution, the drive shaft is connected to the support through a needle bearing and a drive sleeve.

[0012] In the above technical solution, a handle for easy pulling is provided on the transmission shaft.

[0013] In the above technical solution, one or more sets of meshing traveling gears and racks are provided on the driving shaft.

[0014] In the above technical solution, the travel gear is locked by a driving gear fixing nut.

[0015] The beneficial effects of the present invention are: it can realize the conversion of friction force and motion mechanism, reduce the running resistance, thereby reducing the input driving force, reducing wear and tear, and extending the service life of the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the omitted structure of the present invention.

[0017] Figure 2 for Figure 1 Schematic diagram of the middle roller and eccentric shaft.

[0018] Figure 3 for Figure 1 Medium AA view.

[0019] Figure 4 for Figure 1 Medium BB view.

[0020] Figure 5 for Figure 1 Schematic diagram of another state in .

[0021] Figure 6 for Figure 1 Rear view of.

[0022] Among them: 1. Support, 2. Rotating rod locking pin, 3. Rotating rod, 4. Track, 5. Track pad, 6. Roller, 7. Roller bearing pressure plate, 8. Roller deep groove ball bearing, 9. Roller locking nut, 10. Eccentric bearing pressure plate, 11. Tapered roller bearing, 12. Eccentric shaft, 13. Connecting rod A, 14. Connecting rod B, 15. Grooved roller, 16. Track guide plate, 17. Rack, 18. Mounting sleeve, 19. Flange, 20. Transmission gear, 21. Transmission sleeve, 22. Spring pin, 23. Clamping screw, 24. Handle, 25. Transmission shaft, 26. Spring, 27. Transmission gear locking nut, 28. Handwheel shaft, 29. Handwheel locking nut, 30. Handwheel, 31. Driving gear, 32. Transmission bearing, 33. Driving gear locking nut, 34. Traveling gear, 35. Driving shaft, 36. Needle roller bearing, 37. Driving shaft sleeve. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 6 A walking device for converting sliding friction into rolling friction is shown, comprising a walking mechanism and a driving mechanism, wherein the walking mechanism comprises a support 1, a roller 6, an eccentric shaft 12, a track 4, and a rotating rod 3, wherein the support 1 is provided with a plurality of eccentric shafts 12, the eccentric shafts 12 are provided with rollers 6, the rollers 6 cooperate with the laid track 4, at least one end of the eccentric shaft 12 is provided with a rotating rod 3, and the other end of the eccentric shaft 12 is synchronously connected;

[0025] The driving mechanism includes a handwheel 30, a handwheel shaft 28, a driving gear 31, a transmission gear 20, a transmission sleeve 21, a transmission shaft 25, a driving shaft 35, a walking gear 34 and a rack 17. A driving shaft 35 is arranged in the support 1. One end of the driving shaft 35 is rotatably arranged in the support 1, and the other end is connected to the transmission sleeve 21 through a key and connected to the transmission shaft 25 through a thread. The driving shaft 35 is inserted into the transmission sleeve 21 and is connected to the transmission sleeve 21 through a key. The transmission sleeve 21 is arranged in the installation sleeve 18 through a transmission bearing 32, and the installation sleeve 18 is inserted into the support 1. Inside the seat, a spring 26 in a compressed state is provided between the transmission shaft 25 and the transmission sleeve 21, a compression screw 23 is provided on the transmission shaft 25, a spring pin 22 is provided on the compression screw 23, a countersunk hole matching the spring pin 22 is provided on the transmission shaft 25, a transmission gear 20 is provided outside the transmission sleeve 21, the hand wheel 30 is connected to the support 1 through the hand wheel shaft 28, a driving gear 31 is provided on the hand wheel shaft 28, the driving gear 31 meshes with the transmission gear 20, a traveling gear 34 is provided on the driving shaft 35, and a rack 17 that can mesh with the traveling gear 34 is provided on the track 4. The transmission gear 20 is locked by the transmission gear fixing nut 27, and a flange 19 matching it is provided at the mounting sleeve 18.

[0026] Figure 2 In the figure, the eccentric state of the eccentric shaft is 2 mm horizontally.

[0027] The rotating rod 3 is rotated 90° and locked with the support. The eccentric state of the eccentric shaft is 2 mm vertically. The support is brought into contact with or out of contact with the track by rotating the rotating rod 3.

[0028] In the above technical solution, the eccentric shafts 12 are synchronously connected via a connecting rod mechanism, namely, connecting rod A and connecting rod B.

[0029] In the above technical solution, the eccentric shaft 12 is connected to the support 1 through the tapered roller bearing 11 and the eccentric bearing pressure plate 10.

[0030] In the above technical solution, a roller deep groove ball bearing 8, a roller bearing pressure plate 7 and a roller fixing nut 9 are provided between the roller 6 and the eccentric shaft.

[0031] In the above technical solution, a rotating rod fixing pin 2 is provided between the support 1 and the rotating rod 3. The rotating rod fixing pin 2 can lock the support 1 and the rotating rod 3.

[0032] In the above technical solution, a track pad 5 and a track guide plate 16 are provided on the track 4 .

[0033] In the above technical solution, the drive shaft 35 is connected to the support 1 through a needle bearing 36 and a drive sleeve 37 .

[0034] In the above technical solution, a handle 24 for easy pulling is provided on the transmission shaft 25 .

[0035] In the above technical solution, one or more sets of meshing traveling gears 34 and racks 17 are provided on the driving shaft 25 .

[0036] In the above technical solution, the travel gear 34 is locked by the driving gear locking nut 33 .

[0037] Since the roller 6 is provided on both sides, a grooved roller 15 with grooves is provided on one side to better control the movement direction of the entire device.

[0038] Figure 3 In the embodiment, the support 1 has been lifted. When the support 1 needs to be moved, the rotating rod 3 is rotated 90° counterclockwise and locked with the support 1 again, and the support 1 is lifted; the spring pin 22 is released, the handle 24 is pulled to specify the displacement, and then the spring pin 22 is locked with the transmission shaft 25. At this time, the travel gear 34 is meshed with the rack 17, which is attached. Figure 4The state shown. Turn the hand wheel 30, and the support 1 can move along the track. When the support 1 reaches the specified position, release the spring pin 22, push the handle 24 to specify the displacement, and then lock the spring pin 22 with the transmission shaft 25. At this time, the travel gear 34 has been separated from the rack 17. Rotate the rotating rod 3 90° clockwise and lock it with the support 1 again, and the support 1 will fit with the track 4, which is convenient for positioning the support 1. In this way, the movement adjustment of the support is completed.

[0039] The feasibility of the present invention is described below with related calculations. In the whole process, human resources are required to achieve:

[0040] 1. Rotate the rotating rod 3 90°, 2. Push or pull the handle 24 to specify the displacement, 3. Turn the hand wheel 30.

[0041] 1. When the rotating rod 3 rotates, it is mainly to lift the support, that is, when the rotating rod 3 rotates counterclockwise, it is necessary to overcome the support gravity. It is known from experience that the required torque is the largest when the rotating rod 3 is horizontal. Assuming the total weight of the support m1 = 600kg, the horizontal eccentricity L1 = 2mm, and the effective length of the rotating rod 3 L2 = 160mm, then the maximum torque to be overcome is M2 = M1 = m1gL1 = 11.76N·m; the maximum force required for rotation That is, the rotational force needs to be greater than 73.5N.

[0042] 2. When pushing or pulling the handle 24, the friction force of the transmission shaft 25 and the drive shaft 35 is mainly overcome, and the friction force of the clearance fit between the other end of the drive shaft 35 and the needle bearing 36 can be ignored. Assuming the total length of the transmission shaft 25 and the drive shaft 35 L3 = 2000mm, the shaft diameter D1 = 40mm, the total weight of the accessories on the shaft (such as gears) m2 = 5kg, and the sliding friction coefficient μ1 = 0.1, then the weight of the shaft The friction force that needs to be overcome is f=μ1(m2+m3)g=36.2N, that is, the push-pull force needs to be greater than 36.2N.

[0043] 3. When the hand wheel starts to turn, it is necessary to provide a large enough torque to overcome the friction and inertia. At this time, the required torque is the largest. Set the total weight of the support m1 = 600kg, the pitch circle diameter of the running gear 34 D3 = 112mm, and the acceleration of the support when it starts to move a = 0.005m / s 2 , the transmission reduction ratio i of the driving gear 31 and the transmission gear 20 is 1.15, the sliding friction coefficient μ1 is 0.15, the rolling friction coefficient μ2 is 0.05, the total torque transmission efficiency η is 0.95, and the diameter of the hand wheel D2 is 200 mm. When the support and the track generate sliding friction, the maximum torque required for the travel gear 34 to move When the bearing and the track generate rolling friction, the maximum torque required for the travel gear 34 to move After the conversion, the driving torque is significantly reduced. When the bearing and the track produce rolling friction, the handwheel driving force Referring to the handwheel operating force specification in GB / T 12238-2008, the handwheel operating force cannot exceed 350N, so the calculated result is feasible.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A walking device that converts sliding friction into rolling friction, characterized in that: It includes a walking mechanism and a driving mechanism, wherein the walking mechanism includes a support, a roller, an eccentric shaft, a track, and a rotating rod. The support is provided with a plurality of eccentric shafts, and the eccentric shafts are provided with rollers, which cooperate with the laid track. A rotating rod is provided at the end of at least one eccentric shaft, and the other end of the eccentric shaft is synchronously connected; The driving mechanism comprises a handwheel, a handwheel shaft, a driving gear, a transmission gear, a transmission sleeve, a transmission shaft, a driving shaft, a traveling gear and a rack, a driving shaft is arranged in the support, and one end of the driving shaft is rotatably arranged in the support, and the other end is connected to the transmission sleeve by a key and connected to the transmission shaft by a thread. The driving shaft is penetrated in the transmission sleeve and is connected to the transmission sleeve by a key. The transmission sleeve is arranged in the mounting sleeve through a transmission bearing, and the mounting sleeve is penetrated in the support. A spring in a compressed state is provided between the transmission shaft and the transmission sleeve, a clamping screw is provided on the transmission shaft, a spring pin is provided on the clamping screw, and a countersunk hole matching the spring pin is provided on the transmission shaft. A transmission gear is provided outside the transmission sleeve, and the handwheel is connected to the support through the handwheel shaft, a driving gear is provided on the handwheel shaft, and the driving gear is meshed with the transmission gear, a traveling gear is provided on the driving shaft, and a rack that can mesh with the traveling gear is provided on the track. The eccentric shafts are synchronously connected through a connecting rod mechanism, and the eccentric shaft is connected to the support through a tapered roller bearing and an eccentric bearing pressure plate.

2. The walking device for converting sliding friction into rolling friction according to claim 1, characterized in that: A deep groove ball bearing, a roller bearing pressure plate and a roller fixing nut are arranged between the roller and the eccentric shaft.

3. The walking device for converting sliding friction into rolling friction according to claim 1, characterized in that: A rotating rod fixing pin is arranged between the support and the rotating rod.

4. The walking device for converting sliding friction into rolling friction according to claim 1, characterized in that: A track pad and a track guide plate are arranged on the track.

5. The walking device for converting sliding friction into rolling friction according to claim 1, characterized in that: The driving shaft is connected with the support through a needle bearing and a driving sleeve.

6. The walking device for converting sliding friction into rolling friction according to claim 1, characterized in that: The transmission shaft is provided with a handle which is convenient for pulling.

7. The walking device for converting sliding friction into rolling friction according to claim 1, characterized in that: The driving shaft is provided with one or more groups of meshing traveling gears and racks.

8. The walking device for converting sliding friction into rolling friction according to claim 1, characterized in that: The traveling gear is locked by a driving gear fixing nut.

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