Novel electric flat transport vehicle

Abstract

The novel electric flat transport vehicle comprises a vehicle body and a track, the vehicle body comprises a carrying plate, a driving system and a guiding device, and the driving system and the guiding device are arranged below the carrying plate; the driving system comprises a driving motor connected to the bottom of the carrying plate and a reversing machine connected with the output end of the driving motor. Output shafts, rotating in the same direction, on the two sides of the reversing machine are connected with reduction gearboxes respectively, and the output ends of the two reduction gearboxes are connected with the driving wheels respectively; the two driving wheels are arranged in parallel and can roll and walk on the track; a follow-up wheel is arranged in front of the bottom of the carrying plate; a guide device is arranged on one side, close to the middle of the carrying plate, of the driving wheel and the follow-up wheel; a power supply mode of the flat transport vehicle is upgraded to a storage battery power supply mode, and a power supply cable is omitted. A direct-current driving motor is adopted, a control box is additionally arranged, torque is increased through a speed reducer, finally single-motor driving is upgraded, and running synchronism and stability of the transport vehicle are improved. A guide device is added to solve the problem of running jamming of the trolley.

Description

Technical Field

[0001] The present invention relates to round-trip transportation equipment for nuclear power on-site reactor buildings, and more particularly to a novel electric flatbed transport vehicle. Background Art

[0002] Current flatbed transporters are typically powered by cables installed on the vehicle's winch. Two 3KW three-phase AC motors drive the transporter, simultaneously dragging the power cables. This can lead to the towing cables being crushed and torn, causing the vehicle to lose power and trip the system. Current transporter operator controls are large and heavy, making them difficult to handle and place, and they lack remote control capabilities, limiting the safe distance the operator can maintain from the vehicle. When traditional transporters reach the track docking position, the lack of a guide device can cause the transporter to sometimes become stuck or deviate from the track, severely impacting work continuity and efficiency. The dual motors used in traditional flatbed transporters are out of sync, causing the wheel rims and tracks to become stuck and insufficient forward momentum. Summary of the Invention

[0003] In order to solve the above problems, the present invention proposes a new type of electric flatbed transport vehicle to solve the technical problems of traditional flatbed transport vehicles such as cables being easily crushed and torn when dragged, being easily stuck due to the lack of a guide device, and dual motors being out of sync.

[0004] In order to achieve the above-mentioned object, the present invention provides a novel electric flatbed transport vehicle, comprising a vehicle body and tracks, wherein the vehicle body comprises a carrying plate and a driving system and a guiding device arranged below the carrying plate.

[0005] The driving system includes a driving motor connected to the bottom of the carrier plate and a commutator connected to the output end of the driving motor.

[0006] The output shafts rotating in the same direction on both sides of the reversing machine are respectively connected to a reduction box, and the output ends of the two reduction boxes are respectively connected to driving wheels; the two driving wheels are arranged in parallel and can roll on the track.

[0007] A follower wheel is provided at the front of the bottom of the carrying plate, and the guide device is provided on one side of the driving wheel and the follower wheel close to the middle of the carrying plate.

[0008] The guide device includes a support frame, and three connection holes are respectively arranged at equal intervals on both sides of the top of the support frame. A fixed shaft is fixedly connected inside the connection hole, and the bottom end of the fixed shaft is rotatably connected to the guide wheel.

[0009] When the driving wheel is located on the track, the guide wheels are located on both sides of the track.

[0010] In the above-mentioned new electric flatbed transport vehicle, in a preferred embodiment, the guide wheel includes a needle-shaped roller and an outer ring, and the outer ring is rotatably connected to the fixed shaft through a plurality of needle-shaped rollers.

[0011] In the above-mentioned new electric flatbed transport vehicle, in a preferred embodiment, the needle-shaped roller is arranged between the outer ring and the fixed shaft through a retaining frame; a side plate is provided on the side of the guide wheel close to the fixed shaft, and a cover plate is provided on the other side.

[0012] The side plate and the outer ring, and the cover plate and the outer ring are sealed by sealing rings.

[0013] In the above-mentioned novel electric flatbed transport vehicle, in a preferred embodiment, the driving motor is powered by a battery pack, and a charging device is provided to charge the battery pack.

[0014] In the above-mentioned novel electric flatbed transport vehicle, in a preferred embodiment, a rotating shaft in a direction opposite to the rotation direction of the driving motor is extended from one end of the reversing machine away from the driving motor, and the rotating shaft is connected to the brake device.

[0015] In the above-mentioned new electric flatbed transport vehicle, in a preferred embodiment, the braking device includes a rotating disk fixedly connected to the rotating shaft; a hinge shaft is provided above the rotating disk, one end of a semicircular arc plate is hinged on the hinge shaft, and the other end is connected to a handle; a brake pad is fixed to the inner wall of the arc plate.

[0016] In the above-mentioned new electric flatbed transport vehicle, in a preferred embodiment, a spring is provided below the handle, an iron block is provided near the end position, and an electromagnet is provided below the iron block.

[0017] When the electromagnet is energized, the iron block and the handle are sucked down, and the brake pad is separated from the rotating disk.

[0018] When the electromagnet is powered off, the spring pushes up the handle, and the brake pad is pressed against the rotating disk.

[0019] The above-mentioned novel electric flatbed transport vehicle preferably further includes a control box, the battery pack is electrically connected to the control box, and the control box is electrically connected to the drive motor.

[0020] In the above-mentioned novel electric flatbed transport vehicle, in a preferred embodiment, a travel switch is provided on the side of the handle, and the travel switch is electrically connected to the control box.

[0021] In the above-mentioned new electric flatbed transport vehicle, in a preferred embodiment, a first conical tooth connected to the output end of the drive motor is arranged inside the reversing machine, a second conical tooth is vertically meshed with the first conical tooth, and a third conical tooth is vertically meshed with the second conical tooth; both sides of the second conical tooth are respectively connected to the output shaft; and the third conical tooth is connected to the rotating shaft.

[0022] This invention upgrades the flatbed transporter's power supply to battery power, eliminating the power cable (reel) and adding a charging device. The three-phase AC motor is upgraded to a 48V DC traction motor, a control box is added, and torque is increased through a speed reducer. Ultimately, the system is upgraded to a single-motor drive, improving the transporter's synchronization and stability. A guide device is added to address the issue of the vehicle stalling during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the top structure of the present invention;

[0025] Figure 3 is a top view of the guide device of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the fixed shaft and guide wheel in the present invention;

[0027] Figure 5 is a schematic diagram of the guide wheel and track in the present invention;

[0028] Figure 6 yes Figure 2 A local enlarged view of point a in the middle;

[0029] Figure 7 It is a structural schematic diagram of the brake device in the open state in the present invention;

[0030] Figure 8 It is a structural schematic diagram of the brake device in the present invention in a tightened state;

[0031] Figure 9 It is a schematic diagram of the internal structure of the commutator in the present invention.

[0032] In the figure, 1, vehicle body, 2, track, 3, carrier plate, 4, drive motor, 5, commutator, 51, first conical gear, 52, second conical gear, 53, third conical gear, 6, output shaft, 7, reduction gear box, 8, drive wheel, 9, guide device, 91, support frame, 92, connecting hole, 93, fixed shaft, 94, needle roller, 95, outer ring, 96, retaining frame, 97, sealing ring, 98, side plate, 99, guide wheel, 10. Cover plate, 11. Battery pack, 12. Rotating shaft, 13. Braking device, 14. Rotating plate, 15. Articulated shaft, 16. Arc plate, 17. Handle, 18. Brake pad, 19. Spring, 20. Iron block, 21. Electromagnet, 22. Control box, 23. Travel switch, 24. Follower wheel, 25. Charging device, 26. Wireless remote control, 27. Wired hand operator, 28. Alarm buzzer, 29. Spare battery pack. DETAILED DESCRIPTION

[0033] like Figures 1 and 2 As shown, the present invention is a novel electric flatbed transport vehicle, comprising a vehicle body 1 and a track 2. The vehicle body 1 comprises a carrying plate 3 and a drive system and a guide device 9 disposed below the carrying plate 3. The drive system comprises a drive motor 4 connected to the bottom of the carrying plate 3 and a commutator 5 connected to the output end of the drive motor 4.

[0034] The output shafts 6 rotating in the same direction on both sides of the reversing machine 5 are respectively connected to a reduction box 7, and the output ends of the two reduction boxes 7 are respectively connected to the driving wheels 8; the two driving wheels 8 are arranged in parallel and can roll on the track 2.

[0035] A follower wheel 24 is provided at the front bottom of the carrying plate 3 , and the guide device 9 is provided on one side of the driving wheel 8 and the follower wheel 24 close to the middle of the carrying plate 3 .

[0036] like Figures 3 and 4 As shown, the guide device 9 includes a support frame 91, and three connection holes 92 are set at equal intervals on both sides of the top of the support frame 91. A fixed shaft 93 is fixedly connected inside the connection hole 92, and the bottom end of the fixed shaft 93 is rotatably connected to the guide wheel 99.

[0037] like Figure 4 As shown, the guide wheel 99 includes needle rollers 94 and an outer ring 95. The outer ring 95 is rotatably connected to the fixed shaft 93 via multiple needle rollers 94. The needle rollers 94 are disposed between the outer ring 95 and the fixed shaft 93 via a retainer 96. A side plate 98 is provided on the side of the guide wheel 99 closest to the fixed shaft 93, and a cover plate 10 is provided on the other side. Seals 97 are provided between the side plate 98 and the outer ring 95, and between the cover plate 10 and the outer ring 95.

[0038] like Figure 5 As shown, when the driving wheel 8 is located on the track 2 , the guide wheels 99 are located on both sides of the track 2 .

[0039] like Figure 2 、 Figure 6 As shown, a rotating shaft 12 with a rotation direction opposite to that of the driving motor 4 extends from one end of the commutator 5 away from the driving motor 4 , and the rotating shaft 12 is connected to a brake device 13 .

[0040] like Figures 6 to 8 As shown, in one embodiment, the brake device 13 includes a rotating disk 14 fixedly connected to the rotating shaft 12; a hinge shaft 15 is provided above the rotating disk 14, and a semicircular arc plate 16 is hinged at one end to the hinge shaft 15 and connected to a handle 17 at the other end; a brake pad 18 is fixed to the inner wall of the arc plate 16. A spring 19 is provided below the handle 17, and an iron block 20 is provided near the end. An electromagnet 21 is provided below the iron block 20.

[0041] like Figure 7 As shown, when the electromagnet 21 is energized, the iron block 20 and the handle 17 are sucked down, and the brake pad 18 is separated from the rotating disk 14; Figure 8 As shown, when the electromagnet 21 is powered off, the spring 19 lifts the handle 17 and the brake pad 18 is pressed against the rotating disk 14 .

[0042] like Figures 1 and 2 As shown, the drive motor 4 is powered by a battery pack 11, and a charging device 25 is provided to charge the battery pack 11. At the same time, the new electric flatbed transport vehicle of the present invention further includes a control box 22, the battery pack 11 is electrically connected to the control box 22, and the control box 22 is electrically connected to the drive motor 4.

[0043] like Figure 6 As shown, a travel switch 23 is provided on the side of the handle 17 , and the travel switch 23 is electrically connected to the control box 22 .

[0044] like Figure 9 As shown, the commutator 5 is internally provided with a first conical tooth 51 connected to the output end of the drive motor 4, the second conical tooth 52 is vertically meshed with the first conical tooth 51, and the third conical tooth 53 is vertically meshed with the second conical tooth 52; the two sides of the second conical tooth 52 are respectively connected to the output shaft 6; the third conical tooth 53 is connected to the rotating shaft 12.

[0045] In another embodiment, the flatbed transport vehicle is mainly composed of a drive system, a battery pack 11, guide wheels 99, a wireless remote control 26 and a wired hand operator 27, two sets of alarm buzzers 28 (alarm lights and buzzers, arranged in front and back of the vehicle body), a guide device 9, an electrical control system (control box 22), cables, bridge auxiliary parts, etc.

[0046] The present invention replaces the driving motor of the flatbed transport vehicle from the original 380VAC three-phase AC motor to a 48V DC driven traction motor, which has a low voltage (safe voltage) and high torque.

[0047] At the same time, a new mounting bracket is designed, and the drive motor 4, the reduction gear box 7, and the brake device 13 are assembled and connected to the drive wheel 8 of the transport vehicle, and then the speed is controlled by the control box 22.

[0048] The present invention adopts a drive motor 4 with a motor power of 8KW; at the same time, the output torque of the reduction box 7 is increased, so that it has higher acceleration performance and climbing ability (passing performance), and solves the jamming problem caused by the deviation of the vehicle body due to the original dual motor asynchrony.

[0049] The control box 22 is supplied with the drive motor 4 (from the same manufacturer). Its functions include: the battery pack 11 directly powers the control box 22, which controls the operation and speed of the drive motor 4, as well as its starting, stopping, and braking functions. The drive motor 4 receives speed commands from a wireless remote control 26 or a wired handheld operator 27, which are used to control and adjust the speed, provide protection, and display signals.

[0050] A brake device 13 is added to the commutator 5 connected to the output end of the drive motor 4, such as Figures 5 and 6 As shown, the brake is in a locked state in its normal state (power off). Power is applied to release the brake; when power is removed, the brake automatically returns to the locked state. The brake device 13 can be manually unlocked. The manual unlocking lever, or handle 17, is self-resetting. Release of the handle automatically resets the brake to lock. A travel switch 23 has been added to detect whether the handle 17 of the brake device 13 has been reset. The signal from the travel switch 13 is transmitted to the control box 22. If the control box 22 detects that the electromagnet 21 is de-energized but the handle 17 is in the released position (indicating that the handle 17 is manually released), it disables power to the transport vehicle, preventing accidents during manual turning.

[0051] A manual cranking handle is installed behind the brake device 13. In the event of an unexpected power outage, the operator can manually release the brake using handle 17. The operator then manually cranks the transport vehicle by turning the cranking handle. During normal operation, the manual cranking handle must be removed (and stored in the wireless remote control box) to prevent it from rotating with the motor.

[0052] The reversing machine 5 adopts the form of two horizontal and two vertical axes. The horizontal axis is connected to the reduction box 7 through the output shaft 6 (the horizontal axes rotate in the same direction), and the vertical axis is connected to the drive motor 4 and the brake device 13 (the vertical axes rotate in opposite directions).

[0053] The flatbed transport vehicle is powered by a battery pack 11. In order to ensure the continuous working capability of the transport vehicle, a backup battery pack 29 is provided.

[0054] At the same time, a battery power display device is provided on the control box 22 of the transport vehicle. When the battery power is less than a certain value, the alarm buzzer 28 sounds an alarm to remind the operator to charge or replace the battery.

[0055] Each battery pack adopts a split structure, that is, one battery pack is divided into two battery pack boxes, which are connected to each other through quick-plug connectors. The length of each split battery pack box does not exceed 1m, which is convenient for fork loading when replacing the battery pack later and prevents rollover due to excessive length.

[0056] In order to ensure the stability of the transport vehicle on the track 2 and avoid deviation, a guide device 9 is specially designed.

[0057] The guide wheel 99 is installed on the guide device 9. When the guide wheel 99 contacts the track 2, the guide wheel 99 can rotate to reduce the friction caused by the deflection of the side wall of the track 2 during the operation of the transport vehicle, thereby improving the transportation efficiency. The guide wheel 99 is easy to disassemble and assemble, and is suitable for occasions with large radial loads. Its structure is shown in Figure 4 At the same time, the guide device 9 also ensures that the transport vehicle can run in a straight line. Figure 5 As shown, the guide wheel 99 of the guide device 9 is designed to maintain a spacing of 5 mm from the track 2, and the linear deviation of the transport vehicle is controlled within the range of ±5 mm to extend the service life of the guide wheel device.

[0058] The present invention transforms the existing wired operating box into a storage box for the wireless remote control 26. The box is used to store the wireless remote control 26, allowing the operator to take it out as needed. At the same time, the storage box is a sealed box body, which plays a role in protecting the wireless remote control 26. The wireless handheld operator 26 is connected to the control box 22 via wireless signals to control the emergency stop, start, forward and reverse movements of the flatbed transport vehicle, as well as speed adjustment.

[0059] The wired hand operator 27 is connected to the control box 22 via a cable, and the cables are placed in the box (5m cable) and can be taken out as needed. This prevents the wireless remote controller 26 from failing to control the flatbed transporter.

[0060] The present invention upgrades the flatbed transport vehicle's power supply mode to battery power, eliminates the power supply cable (the cable is only used in emergencies), adds a charging device 25, and adds a backup power supply (48VDC). In the event of a failure of the battery pack 11 or the charging device 25, the backup power supply can be used to power the transport vehicle, and a cable of a corresponding length is provided to ensure that the transport vehicle can continue to operate. The three-phase AC motor is upgraded to a 48V DC drive traction motor, a motor controller (control box 22) is added, and torque is increased through the reduction gear 7. Finally, a single motor drive is upgraded to improve the synchronization and stability of the transport vehicle's operation; the wired control box is upgraded to a wired hand operator 27 that is convenient for personnel to operate, and a wireless remote control 26 is added; and a guide device 9 is added to solve the problem of the vehicle's operation being stuck.

[0061] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A novel electric flatbed transport vehicle, comprising a vehicle body (1) and a track (2), characterized in that: The vehicle body (1) includes a carrier plate (3) and a drive system and a guide device (9) arranged below the carrier plate (3); The driving system includes a driving motor (4) connected to the bottom of the carrier plate (3), and a commutator (5) connected to the output end of the driving motor (4); The output shafts (6) rotating in the same direction on both sides of the reversing machine (5) are respectively connected to a reduction box (7), and the output ends of the two reduction boxes (7) are respectively connected to driving wheels (8); the two driving wheels (8) are arranged in parallel and can roll on the track (2); A follower wheel (24) is provided at the front of the bottom of the carrier plate (3), and the guide device (9) is provided on one side of the driving wheel (8) and the follower wheel (24) close to the middle of the carrier plate (3); The guide device (9) includes a support frame (91), three connection holes (92) are respectively arranged at equal intervals on both sides of the top of the support frame (91), a fixed shaft (93) is fixedly connected inside the connection hole (92), and the bottom end of the fixed shaft (93) is rotatably connected to the guide wheel (99); When the driving wheel (8) is located on the track (2), the guide wheels (99) are located on both sides of the track (2).

2. The new electric flatbed transport vehicle according to claim 1 is characterized in that: The guide wheel (99) includes a needle roller (94) and an outer ring (95), and the outer ring (95) is rotatably connected to the fixed shaft (93) through a plurality of needle rollers (94).

3. The new electric flatbed transport vehicle according to claim 2 is characterized in that: The needle roller (94) is arranged between the outer ring (95) and the fixed shaft (93) through a retainer (96); a side plate (98) is provided on one side of the guide wheel (99) close to the fixed shaft (93), and a cover plate (10) is provided on the other side; The side plate (98) and the outer ring (95) as well as the cover plate (10) and the outer ring (95) are sealed by a sealing ring (97).

4. The new electric flatbed transport vehicle according to claim 1 is characterized in that: The driving motor (4) is powered by a battery pack (11), and a charging device (25) is provided for charging the battery pack (11).

5. The new electric flatbed transport vehicle according to claim 4 is characterized in that: A rotating shaft (12) extending from one end of the commutator (5) away from the drive motor (4) rotates in a direction opposite to that of the drive motor (4), and the rotating shaft (12) is connected to a brake device (13).

6. The new electric flatbed transport vehicle according to claim 5, characterized in that: The holding brake device (13) includes a rotating disk (14) fixedly connected to the rotating shaft (12); a hinge shaft (15) is arranged above the rotating disk (14); one end of a semicircular arc plate (16) is hinged on the hinge shaft (15), and the other end is connected to a handle (17); a brake pad (18) is fixed to the inner wall of the arc plate (16).

7. The new electric flatbed transport vehicle according to claim 6, characterized in that: A spring (19) is provided below the handle (17), an iron block (20) is provided near the end, and an electromagnet (21) is provided below the iron block (20); When the electromagnet (21) is energized, the iron block (20) and the handle (17) are sucked down, and the brake pad (18) is separated from the rotating disk (14); When the electromagnet (21) is powered off, the spring (19) lifts the handle (17) and the brake pad (18) is pressed against the rotating disk (14).

8. The new electric flatbed transport vehicle according to claim 7, characterized in that: It also includes a control box (22), the battery pack (11) is electrically connected to the control box (22), and the control box (22) is electrically connected to the drive motor (4).

9. The new electric flatbed transport vehicle according to claim 8, characterized in that: A travel switch (23) is provided on the side of the handle (17), and the travel switch (23) is electrically connected to the control box (22).

10. The new electric flatbed transport vehicle according to claim 5, characterized in that: A first conical tooth (51) connected to the output end of the drive motor (4) is provided inside the commutator (5); a second conical tooth (52) is vertically meshed with the first conical tooth (51); and a third conical tooth (53) is vertically meshed with the second conical tooth (52); both sides of the second conical tooth (52) are respectively connected to the output shaft (6); and the third conical tooth (53) is connected to the rotating shaft (12).

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