Electromagnetic clutch and walking mechanism

Abstract

The utility model discloses an electromagnetic clutch and a walking mechanism, the electromagnetic clutch comprises a walking motor, a push-pull type electromagnet, a driving bevel gear, a driven bevel gear and a spline housing, the spline housing is connected to the lower side of the push-pull type electromagnet, and an output shaft of the walking motor penetrates through the push-pull type electromagnet and then is connected with a spline gear in meshed connection with the spline housing; the upper end face of the driving bevel gear is connected with a spline shaft connected with the spline sleeve in a matched mode, one side of the driven bevel gear is connected with a connecting shaft, and the other side of the driven bevel gear is connected with the driving bevel gear in a meshed mode. The walking trolley comprises an underframe, front wheels and rear wheels, the underframe is connected to one end of the folding frame, the front wheels and the rear wheels are sequentially and rotatably connected to the lower side of the underframe, the walking motor is mounted on the upper side of the underframe, and the connecting shaft is connected to one end of each front wheel. The design is simple in structure, high in stability and long in service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially relates to a kind of electromagnetic clutch and walking mechanism. BACKGROUND

[0002] Electric vehicle is the development direction of today's traffic, transportation, handling tools, mainly through electric mode instead of manual push, pull and transport, when electric vehicle encounters some narrow environment, need to switch electric mode to manual mode to walk, therefore, electric vehicle often has electric and manual two driving modes, currently, part vehicle electric and push walk between switching more using automatic separation gearbox to realize, since automatic separation gearbox uses the combination of intermediate movable gear and fixed gear to realize power transmission, intermediate movable gear is stressed and is easy to produce skew, collapse when overload, there is a large failure rate, thus not suitable for large torque or high speed occasion, leading to low service life of vehicle. SUMMARY

[0003] The utility model aims at overcoming the defects and problems of poor stability and low service life in the prior art, and provides an electromagnetic clutch and walking mechanism with high stability and long service life.

[0004] To achieve the above object, the technical solution of the utility model is: an electromagnetic clutch, the electromagnetic clutch includes walking motor, push-pull electromagnet, driven bevel gear, driving bevel gear and spline sleeve, the spline sleeve is connected to the lower side of the push-pull electromagnet, the output shaft of the walking motor is connected with spline gear after passing through the push-pull electromagnet, the spline gear is engaged with the spline sleeve, the driving bevel gear is horizontally arranged and the upper end surface is connected with spline shaft, the spline sleeve is matched and connected to the outer circumferential surface of the spline shaft, the driven bevel gear is vertically arranged and one side is connected with connecting shaft, the other side of the driven bevel gear is engaged with the driving bevel gear.

[0005] The push-pull electromagnet is connected with the spline sleeve through a thrust bearing.

[0006] A walking mechanism includes folding frame, walking wheel, walking trolley and electromagnetic clutch, the walking wheel and walking trolley are respectively located at both ends of the folding frame, the walking wheel is rotatably connected to the folding frame, the walking trolley includes chassis, front wheel and rear wheel, the chassis is connected to one end of the folding frame, the front wheel and rear wheel are rotatably connected to the lower side of the chassis in sequence, the walking motor of the electromagnetic clutch is installed on the upper side of the chassis, and the connecting shaft of the electromagnetic clutch is coaxially connected to one end of the front wheel.

[0007] The folding frame comprises a main frame, a first frame and a second frame, one side of the main frame is connected with the walking trolley, the other side of the main frame is connected with one side of the first frame, the other side of the first frame is connected with one side of the second frame through a hinge, a locking assembly is connected between the first frame and the second frame, and the lower side of the second frame is rotationally connected with the walking wheel.

[0008] The other side of the main frame is connected with a threaded column, one side of the first frame is abutted to the other side of the main frame and is provided with a mounting hole for the threaded column to pass through, a wing nut is threadedly connected to the threaded column, and one end of the wing nut is abutted to the inner side wall of the first frame.

[0009] The locking assembly comprises two connecting columns, the two connecting columns are connected to the upper sides of the first frame and the second frame respectively, one of the connecting columns is rotationally connected with a rotating shaft, a rotating rod is sleeved on the outer periphery of the rotating shaft, one end of the rotating rod is threadedly connected with a wing nut after penetrating through the other connecting column, and one end of the wing nut on the rotating rod is abutted to the outer side of the other connecting column.

[0010] The upper side of the main frame is provided with a handrail sleeve, the upper end of the handrail sleeve is inserted with a handrail support, and the upper side of the handrail support is transversely connected with a handrail.

[0011] The walking trolley is provided with a control assembly, the control assembly comprises an encoder, a power supply and an industrial computer, the encoder is connected to one end of the front wheel, the power supply is installed on the upper side of the bottom frame and connected with the walking motor and the industrial computer, and the industrial computer is connected with the walking motor and the encoder.

[0012] One end of the folding frame is connected with a rotating seat, the rotating seat is in an inverted U shape, two side walls of the rotating seat are connected with an axle, and the walking wheel is sleeved on the outer periphery of the axle.

[0013] The bottom frame is sequentially provided with two mounting seats on the lower side, the mounting seats are in an inverted U shape, the front wheel and the rear wheel are rotationally connected to the inner sides of the two mounting seats respectively, and the front wheel and the rear wheel are connected with rims at two ends.

[0014] Compared with the prior art, the folding frame has the advantages that:

[0015] 1. In the electromagnetic clutch, by setting the spline gear, spline sleeve and spline shaft, the spline gear and spline sleeve are connected together by sliding after clearance fit, and the electromagnetic clutch formed by the push-pull electromagnet and the walking motor in series can make the movable core and the push rod of the push-pull electromagnet move to generate thrust to drive the spline sleeve to move down and combine with the spline shaft at the upper end of the driving bevel gear when the walking motor is powered, so that the torque on the output shaft of the walking motor is transmitted to the driving bevel gear through the spline gear, spline sleeve and spline shaft to realize forced torque transmission, and the power output by the walking motor is forced to be transmitted to the connecting shaft, and the wheels can be driven to walk through the connection of the connecting shaft and the wheels, and the push-pull electromagnet is also powered off at the same time when the walking motor is powered off, at this time, the movable core and the push rod are automatically reset under the action of the return spring to drive the spline sleeve to move up and separate from the spline shaft, and the torque output by the walking motor to the spline sleeve is disconnected with the spline shaft on the driving bevel gear, so that the power output by the walking motor is separated from the wheels, the overall structure is simple, the response time is shorter, and the performance is more reliable. Therefore, the utility model has the advantages of simple structure, high stability and long service life.

[0016] 2. In the electromagnetic clutch, the push-pull electromagnet only moves up and down, and the spline sleeve moves up and down with the electromagnet and also rotates with the spline gear, the thrust bearing is arranged between the push-pull electromagnet and the spline sleeve to fix the upper end surface of the thrust bearing and the movable end of the push-pull electromagnet to ensure that they can only move up and down, and the lower end surface of the thrust bearing moves up and down with the push-pull electromagnet and also rotates with the spline sleeve to ensure that the spline sleeve can rotate freely during up and down movement, so that the spline sleeve and the spline shaft can be smoothly separated and combined. Therefore, the utility model has the advantages of high reliability and stable working process.

[0017] 3. In the walking mechanism, the electromagnetic clutch is used, the electric manual automatic separation double drive mode is adopted, the automatic mode and the manual mode of the vehicle walking can be freely switched, so that the on-site situation can be freely selected, the folding frame is connected by three frames, the type of the folding frame can be selected according to the width of the actual walking track, so as to adapt to different scenes and working conditions, meanwhile, the second frame and the first frame are connected by hinges, the angle between the first frame and the second frame can be adjusted, so as to be suitable for different environments, and the angle is locked by the locking assembly after adjustment, so that the walking process is more stable. Therefore, the utility model has the advantages of high stability and convenient use.

[0018] 4, The utility model discloses a walking mechanism, through setting up encoder, walking motor can although automatic detection rotating speed, and can with motor's mechanical movement conversion electric signal, through computer or other processing unit carries out calculation to obtain motor's rotating speed and steering, but in the driving process, clutch, gear clearance, wheel skid etc. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structural diagram of electromagnetic clutch in the utility model.

[0020] Figure 2 It is the structural diagram of spline sleeve, spline shaft and spline gear in the utility model.

[0021] Figure 3 It is the structural diagram of walking mechanism in the utility model.

[0022] Figure 4 It is the structural diagram of walking trolley in the utility model.

[0023] Figure 5 It is the structural diagram of folding frame under one visual angle in the utility model.

[0024] Figure 6 It is the structural diagram of folding frame under another visual angle in the utility model.

[0025] Figure 7 It is the structural diagram of main frame in the utility model.

[0026] Figure 8 It is the structural diagram of first frame and second frame in the utility model.

[0027] Figure 9 It is the structural diagram of second frame, rotating seat and walking wheel in the utility model.

[0028] In the diagram: 1. Folding frame; 11. Main frame; 12. First frame; 13. Second frame; 14. Hinge; 15. Locking assembly; 151. Connecting column; 152. Rotating shaft; 153. Mounting hole; 16. Threaded column; 17. Wing nut; 18. Rotating seat; 19. Wheel axle; 110. Traveling wheel; 2. Electromagnetic clutch; 31. Traveling motor; 32. Push-pull electromagnet; 33. Driving bevel gear; 34. Driven bevel gear; 35. Spline sleeve; 36. Spline gear; 37. Spline shaft; 38. Connecting shaft; 4. Traveling trolley; 41. Base frame; 42. Front wheel; 43. Rear wheel; 44. Mounting seat; 45. Wheel rim; 5. Handrail sleeve; 6. Handrail bracket; 7. Handrail; 8. Control assembly; 81. Encoder; 82. Power supply; 83. Industrial computer. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1:

[0031] See Figures 1 to 2 An electromagnetic clutch 3 includes a travel motor 31, a push-pull electromagnet 32, a driving bevel gear 33, a driven bevel gear 34, and a spline sleeve 35. The spline sleeve 35 is connected to the lower side of the push-pull electromagnet 32. The output shaft of the travel motor 31 passes through the push-pull electromagnet 32 ​​and is connected to a spline gear 36. The spline gear 36 meshes with the spline sleeve 35. The driving bevel gear 33 is horizontally arranged and its upper end is connected to a spline shaft 37. The spline sleeve 35 is fitted to the outer circumferential surface of the spline shaft 37. The driven bevel gear 34 is vertically arranged and its side is connected to a connecting shaft 38. The other side of the driven bevel gear 34 meshes with the driving bevel gear 33. A thrust bearing is connected between the push-pull electromagnet 32 ​​and the spline sleeve 35.

[0032] In this embodiment, the walking motor 31 is a servo motor. A push-pull electromagnet 32 ​​is sleeved on the outside of the output shaft of the servo motor. The lower end of the push-pull electromagnet 32 ​​is connected to the top surface of the thrust bearing. The bottom surface of the thrust bearing after passing through the output shaft of the servo motor is connected to the spline sleeve 35. A limit switch is installed in the initial position of the spline sleeve 35. The limit switch is connected to a green indicator light or a buzzer alarm device.

[0033] Power is transmitted to the spline gear 36 through the walking motor 31, the spline gear 36 is connected with the spline sleeve 35, and the power is disconnected normally. When the walking motor 31 is powered, the push-pull electromagnet 32 is synchronously powered, at this time the movable iron core and the push rod of the push-pull electromagnet 32 move to generate a pushing force to drive the spline sleeve 35 to move downward to make the inner tooth ring engage with the spline shaft 37, at this time the torque can be transmitted to the driving bevel gear 33, and the power is transmitted to the connecting shaft 37 through the driving bevel gear 34. The spline sleeve 35 can rotate with the lower end surface of the thrust bearing between the push-pull electromagnet 32 and the spline sleeve 35, which ensures that the spline sleeve 35 can rotate freely during the downward movement to avoid jamming. The upper end surface of the thrust bearing is connected and fixed with the push-pull electromagnet 32 to ensure that the push-pull electromagnet 32 can only move up and down while not rotating with the shaft or the spline sleeve 35. When the walking motor 31 is powered off, the push-pull electromagnet 32 is powered off, at this time the spline sleeve 35 is automatically reset under the action of the spring force, and touches the travel switch when reset to the initial position, at this time the green indicator light is on, indicating that the electromagnetic clutch 3 is disconnected completely.

[0034] Embodiment 2:

[0035] Referring to Figure 3 and Figure 4 A walking mechanism, comprising a folding frame 1, a walking wheel 2, a walking trolley 4 and the electromagnetic clutch 3 described in embodiment 1, the walking wheel 2 and the walking trolley 4 are respectively located at both ends of the folding frame 1, the walking wheel 2 is rotatably connected to the folding frame 1, the walking trolley 4 comprises a chassis 41, a front wheel 42 and a rear wheel 43, the chassis 41 is connected to one end of the folding frame 1, the front wheel 42 and the rear wheel 43 are sequentially rotatably connected to the lower side of the chassis 41, the walking motor 31 of the electromagnetic clutch 3 is installed on the upper side of the chassis 41, and the connecting shaft 38 of the electromagnetic clutch 3 is coaxially connected to one end of the front wheel 42.

[0036] A control assembly 8 is installed on the walking trolley 4, the control assembly 8 comprises an encoder 81, a power supply 82 and an industrial computer 83, the encoder 81 is connected to one end of the front wheel 42, the power supply 82 is installed on the upper side of the chassis 41 and connected with the walking motor 31 and the industrial computer 83, and the industrial computer 83 is connected with the walking motor 31 and the encoder 81.

[0037] In this embodiment, the upper end of the push-pull electromagnet 32 is fixed on the chassis 41, the middle part of the connecting shaft 38 is connected with the front wheel 42 through a key, and the end of the connecting shaft 38 is placed with the encoder 81. Since the walking motor 31 can detect the input rotation angle, but cannot detect the wheel rotation speed when the power is disconnected, the encoder 81 needs to be installed on the wheel connecting shaft 38 to detect the wheel rotation angle to calculate the driving distance when the vehicle needs to be pushed by hand. In work, the difference between the two rotation angles can also be used to feedback the combination of parts and the gear clearance.

[0038] Embodiment 3:

[0039] The basic content is equivalent to Embodiment 2, except that:

[0040] Referring to Figures 5 to 8 , the folding frame 1 comprises a main frame 11, a first frame 12, and a second frame 13, one side of the main frame 11 is connected with the walking trolley 4, the other side of the main frame 11 is connected with one side of the first frame 12, the other side of the first frame 12 is connected with one side of the second frame 13 through a hinge 14, a locking assembly 15 is connected between the first frame 12 and the second frame 13, and the lower side of the second frame 13 is rotationally connected with the walking wheel 2.

[0041] The other side of the main frame 11 is connected with a threaded column 17, one side of the first frame 12 abuts against the other side of the main frame 11 and is provided with a mounting hole 16 for the threaded column 17 to pass through, a wing nut 18 is threadedly connected on the threaded column 17, and one end of the wing nut 18 abuts against the inner side wall of the first frame 12.

[0042] The locking assembly 15 comprises two connecting columns 151, the two connecting columns 151 are respectively connected to the upper sides of the first frame 12 and the second frame 13, one of the connecting columns 151 is rotationally connected with a rotating shaft 152, a rotating rod 153 is sleeved on the outer periphery of the rotating shaft 152, one end of the rotating rod 153 is threadedly connected with a wing nut 18 after penetrating through the other connecting column 151, and one end of the wing nut 18 on the rotating rod 153 abuts against the outer side of the other connecting column 151.

[0043] In this embodiment, the walking mechanism can also be applied to a track, when the track width changes, the first frame 12 and the second frame 13 of other specifications and lengths can be replaced as a whole to adapt to the new track width, and the storage space and disassembly speed can be reduced by quickly folding the first frame 12 and the second frame 13 during transportation.

[0044] Embodiment 4:

[0045] The basic content is equivalent to Embodiment 2, except that:

[0046] Referring to Figure 4 and Figure 9 , one end of the folding frame 1 is connected with a rotating seat 19, the rotating seat 19 is in an inverted U shape, a wheel shaft 110 is connected between the two side walls of the rotating seat 19, and the walking wheel 2 is sleeved on the outer periphery of the wheel shaft 110.

[0047] Two mounting seats 44 are sequentially mounted on the lower side of the chassis 41, the mounting seats 44 are inverted U-shaped, the front wheels 42 and the rear wheels 43 are respectively rotationally connected to the inner sides of the two mounting seats 44, and the two ends of the front wheels 42 and the rear wheels 43 are all connected with the rims 45.

[0048] In this embodiment, the walking mechanism can also be applied to tracks, the distance between the two rims 45 is the width of the track, the front wheels 42 and the rear wheels 43 can rotate on the upper side of a track, the two rims 45 limit the front wheels 42 and the rear wheels 43, and the walking wheels 2 are rollingly connected on the upper side of another track.

Claims

1. An electromagnetic clutch, characterized in that: The electromagnetic clutch (3) includes a walking motor (31), a push-pull electromagnet (32), a driving bevel gear (33), a driven bevel gear (34), and a spline sleeve (35). The spline sleeve (35) is connected to the lower side of the push-pull electromagnet (32). The output shaft of the walking motor (31) passes through the push-pull electromagnet (32) and is connected to a spline gear (36). The spline gear (36) meshes with the spline sleeve (35). The driving bevel gear (33) is horizontally arranged and its upper end is connected to a spline shaft (37). The spline sleeve (35) is fitted to the outer circumferential surface of the spline shaft (37). The driven bevel gear (34) is vertically arranged and its side is connected to a connecting shaft (38). The other side of the driven bevel gear (34) meshes with the driving bevel gear (33).

2. An electromagnetic clutch according to claim 1, characterized in that: A thrust bearing is connected between the push-pull electromagnet (32) and the spline sleeve (35).

3. A walking mechanism, characterized in that: The device includes a folding frame (1), wheels (2), a trolley (4), and an electromagnetic clutch (3) as described in claim 1 or 2. The wheels (2) and the trolley (4) are located at both ends of the folding frame (1). The wheels (2) are rotatably connected to the folding frame (1). The trolley (4) includes a base frame (41), a front wheel (42), and a rear wheel (43). The base frame (41) is connected to one end of the folding frame (1). The front wheel (42) and the rear wheel (43) are rotatably connected to the lower side of the base frame (41) in sequence. The motor (31) of the electromagnetic clutch (3) is mounted on the upper side of the base frame (41). The connecting shaft (38) of the electromagnetic clutch (3) is coaxially connected to one end of the front wheel (42).

4. A walking mechanism according to claim 3, characterized in that: The folding frame (1) includes a main frame (11), a first frame (12), and a second frame (13). One side of the main frame (11) is connected to the traveling trolley (4), and the other side of the main frame (11) is connected to one side of the first frame (12). The other side of the first frame (12) and one side of the second frame (13) are connected to each other by a hinge (14). A locking assembly (15) is connected between the first frame (12) and the second frame (13). The traveling wheel (2) is rotatably connected to the lower side of the second frame (13).

5. A walking mechanism according to claim 4, characterized in that: A threaded post (17) is connected to the other side of the main frame (11). One side of the first frame (12) abuts against the other side of the main frame (11) and has an installation hole (16) for the threaded post (17) to pass through. A wing nut (18) is threaded onto the threaded post (17), and one end of the wing nut (18) abuts against the inner wall of the first frame (12).

6. A walking mechanism according to claim 4, characterized in that: The locking assembly (15) includes two connecting posts (151), which are respectively connected to the upper side of the first frame (12) and the second frame (13). A rotating shaft (152) is rotatably connected to one of the connecting posts (151). A rotating rod (153) is sleeved on the outer circumference of the rotating shaft (152). One end of the rotating rod (153) passes through the other connecting post (151) and is threaded with a wing nut (18). One end of the wing nut (18) on the rotating rod (153) abuts against the outside of the other connecting post (151).

7. A walking mechanism according to claim 4, characterized in that: An armrest cover (5) is installed on the upper side of the main frame (11), and an armrest bracket (6) is inserted into the upper end of the armrest cover (5). An armrest (7) is horizontally connected to the upper side of the armrest bracket (6).

8. A walking mechanism according to claim 3, characterized in that: The walking trolley (4) is equipped with a control component (8), which includes an encoder (81), a power supply (82), and an industrial computer (83). The encoder (81) is connected to one end of the front wheel (42). The power supply (82) is installed on the upper side of the base frame (41) and connected to the walking motor (31) and the industrial computer (83). The industrial computer (83) is connected to the walking motor (31) and the encoder (81).

9. A walking mechanism according to claim 3, characterized in that: One end of the folding frame (1) is connected to a rotating seat (19), which is inverted U-shaped. A wheel axle (110) is connected between the two side walls of the rotating seat (19), and the walking wheel (2) is fitted on the outer circumference of the wheel axle (110).

10. A walking mechanism according to claim 3, characterized in that: Two mounting seats (44) are installed sequentially on the lower side of the base frame (41). The mounting seats (44) are inverted U-shaped. The front wheel (42) and the rear wheel (43) are rotatably connected to the inner side of the two mounting seats (44). Both ends of the front wheel (42) and the rear wheel (43) are connected to wheel flanges (45).

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