CN114803945A

CN114803945A - Safe anti-toppling forklift with adjustable wheelbase

Info

Publication number: CN114803945A
Application number: CN202210294537.8A
Authority: CN
Inventors: 陈贤鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-07-29

Abstract

The invention relates to a forklift, in particular to a safe anti-toppling forklift with an adjustable wheelbase. The technical problem is as follows: a safe anti-tipping forklift with an adjustable wheelbase without manually acting as a counter weight can prevent the forklift from tipping. The technical scheme of the invention is as follows: the utility model provides a safe wheelbase adjustable fork truck of preventing empting, is equipped with the driver's cabin in the middle of the automobile body top including automobile body, driver's cabin, controller, drive case, lifing arm and fork, and driver's cabin one side is equipped with the controller, is equipped with the drive case in the middle of the automobile body bottom, and automobile body one end is equipped with the lifing arm, and lifing arm one side symmetry slidingtype is equipped with the fork. Through can adjusting the position of drive wheel, thereby the area of contact who forms between the whole of messenger's automobile body and the ground is bigger can make this fork truck more stable, can not take place to topple over when can not be because of carrying heavier goods rebound.

Description

Safe anti-toppling forklift with adjustable wheelbase

Technical Field

The invention relates to a forklift, in particular to a safe anti-toppling forklift with an adjustable wheelbase.

Background

Fork truck is industry haulage vehicle, refer to the various wheeled haulage vehicle that load and unload, stack and short distance transport operation to finished pallet goods, when using fork truck to transport some heavier article, after the fork of fork truck upwards rises, because of the object is heavier, under the unchangeable condition of fork truck's atress central point, very easily make fork truck take place to empty this moment, when preventing this kind of situation at present, need the manual work to stand at the opposite side of fork truck, form the counter weight and just can avoid fork truck to empty, so comparatively consume the manpower, and for the staff, have certain danger.

Therefore, a safe anti-toppling forklift with an adjustable wheelbase, which can prevent the forklift from toppling without manually acting as a counter weight, needs to be designed.

Disclosure of Invention

In order to overcome when need preventing fork truck and toppling over, need the manual work stand at fork truck's opposite side, form the counter weight and just can avoid fork truck to topple over, so comparatively consume the manpower, and to the staff, have certain dangerous shortcoming, the technical problem is: the utility model provides a need not the artifical counter weight alright prevent fork truck's safe wheelbase adjustable fork truck of empting that acts as.

The technical scheme of the invention is as follows: the utility model provides a safe wheelbase adjustable fork truck of preventing empting, which comprises a carriage body, the driver's cabin, a controller, the drive case, the lifing arm, the fork, drive mechanism, actuating mechanism, lifting mechanism and anti-drop mechanism, be equipped with the driver's cabin in the middle of the automobile body top, driver's cabin one side is equipped with the controller, be equipped with the drive case in the middle of the automobile body bottom, automobile body one end is equipped with the lifing arm, lifing arm one side symmetry slidingtype is equipped with the fork, automobile body bottom one side is equipped with drive mechanism, be connected with actuating mechanism between drive mechanism and the automobile body, be equipped with lifting mechanism on the fork, be equipped with anti-drop mechanism on the fork, automobile body one side rotary type is equipped with the wheel, the drive case is connected with the power supply of automobile body, be equipped with first switch and second switch on the controller, the fork links to each other with the lift of automobile body.

Further, drive mechanism is equipped with the gear box including gear box, transmission shaft, integral key shaft, internal spline pipe and drive wheel bottom car body one side, and the gear box is in drive case one side, and the drive case can cooperate with the gear box, and the rotary type is equipped with the transmission shaft in the gear box, and the transmission shaft both sides all are equipped with the integral key shaft, and the integral key shaft is last all to be slided and is equipped with the internal spline pipe, and the both sides of internal spline pipe all are equipped with the drive wheel.

Further, actuating mechanism is including the mounting panel, the guide block, connecting plate and first electric putter, bottom of the vehicle body one side is equipped with the mounting panel, the mounting panel is in gear box one side, mounting panel bottom symmetry is equipped with the guide block, equal slidingtype is equipped with the connecting plate on the guide block, the connecting plate is connected with the equal rotary type of adjacent internal spline pipe, the guide way has all been opened to the connecting plate both sides, guide way and guide block slidingtype cooperation, mounting panel one side symmetry is equipped with first electric putter, first electric putter telescopic link all links to each other with adjacent connecting plate.

Further, lifting mechanism is including the diaphragm, the square hole cover, square board, first spring, first inclined plane piece, the guide holder, the deflector, the second inclined plane board, second electric putter and first distance sensor, be connected with the diaphragm between the fork, diaphragm bottom one side is equipped with the guide holder, the guide holder bottom is equipped with second electric putter, the slidingtype is equipped with the deflector in the guide holder, deflector one end is equipped with the second inclined plane board, second inclined plane board links to each other with second electric putter's telescopic link, diaphragm one side symmetry is equipped with the square hole cover, all the slidingtype is equipped with square board in the square hole cover, all be connected with first spring between square board and the diaphragm, square board bottom all is equipped with first inclined plane piece, diaphragm bottom one side that is close to the square hole cover is equipped with first distance sensor.

Further, the anti-falling mechanism comprises a first piston cylinder, a contact plate, a second spring, a communication pipe, a second piston cylinder, a stop block, a pressure relief pipe, an electromagnetic valve, a third piston cylinder, a third spring and a second distance sensor, wherein all the fork cavities are provided with mounting grooves, one side in each mounting groove is provided with the first piston cylinder, all the first piston cylinders are provided with the contact plate in a sliding manner, the second springs are connected between the contact plate and the adjacent first piston cylinders, one side of each first piston cylinder is provided with the communication pipe, one side of each mounting groove, far away from the first piston cylinder, is provided with the second piston cylinder, all the stop blocks are arranged in each second piston cylinder in a sliding manner, one end of each communication pipe is connected to the adjacent second piston cylinder, one side of each second piston cylinder is provided with the pressure relief pipe, the electromagnetic valve is arranged on each pressure relief pipe, one side of each mounting groove is provided with the third piston cylinder, and all the third piston cylinders are provided with connecting rods in a sliding manner, all be connected with the third spring between connecting rod and the adjacent third piston cylinder, the third piston cylinder all links to each other with adjacent pressure release pipe one end, and fork bottom one side that is close to the second piston cylinder all is equipped with second distance sensor.

Further, still including observation mechanism, observation mechanism is including third distance sensor, the monitor, third electric putter, camera and transparent guard plate, the lifing arm middle part is equipped with third distance sensor, automobile body top one side rotary type is equipped with the monitor, one side of driver's cabin is equipped with third electric putter, third electric putter's telescopic link and monitor rotary type are connected, one side of one side fork all opens there is the fixed slot, fixed slot one side is equipped with the camera, the fixed slot one side of keeping away from the camera is equipped with transparent guard plate.

Further, including clean mechanism, clean mechanism is including guide arm, guide pin bushing, clean board, fourth spring, act as go-between and conduit, and the symmetry is equipped with the guide arm on the transparent guard plate, and guide arm one side all is slidingtype to be equipped with the guide pin bushing, is connected with the clean board between the guide pin bushing, is connected with the fourth spring between one side guide pin bushing and the adjacent guide arm, and one side fork one side is equipped with the conduit, is connected with between clean board and the one side connecting rod to act as go-between, acts as go-between and passes the conduit.

Further, still including laminating mechanism, laminating mechanism is including articulated shaft and cylinder, and open at first inclined plane piece middle part has the embedded groove, and the rotary type is equipped with the articulated shaft in the first inclined plane piece, and the articulated shaft rotates on the embedded groove, is equipped with the cylinder on the articulated shaft.

Furthermore, the warning device comprises a warning mechanism, the warning mechanism comprises a fourth distance sensor and a buzzer, the fourth distance sensor is arranged in the middle of the vehicle body, and the buzzer is arranged on the upper portion of one side of the vehicle body.

The control box is arranged in the middle of one side of the vehicle body and comprises a switching power supply and a control module, the switching power supply supplies power to the whole equipment, the switching power supply is connected with a power main switch through a circuit, and the switching power supply is electrically connected with the control module; the control module is connected with a DS1302 clock circuit and a 24C02 circuit; first switch, second switch, first distance sensor, second distance sensor, third distance sensor, bee calling organ and fourth distance sensor all pass through electric connection with control module, and first electric putter, second electric putter and third electric putter all pass through peripheral line with control module and are connected.

The beneficial effects are that:

1. through can adjusting the position of drive wheel, thereby the area of contact who forms between the whole of messenger's automobile body and the ground is bigger can make this fork truck more stable, can not take place to topple over when can not be because of carrying heavier goods rebound.

2. When the goods is on the fork, the dog rebound at this moment blocks the goods, alright avoid the fork stop when moving right, the goods roll off the fork under inertial effect.

3. The picture that the camera was shot is transmitted for the monitor, can know the road conditions always to when can avoiding sheltering from the sight by the goods, thereby it increases the degree of difficulty to freight to be unaware of the road conditions.

4. The transparent protection plate is cleaned through the cleaning plate moving backwards, so that excessive dust is avoided, and the shooting definition of the camera cannot be influenced.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of the transmission mechanism of the present invention.

Fig. 3 is a schematic perspective view of a first part of the present invention.

Fig. 4 is a schematic perspective view of the driving mechanism of the present invention.

Fig. 5 is a schematic perspective view of the lifting mechanism of the present invention.

Fig. 6 is a schematic perspective view of the anti-falling mechanism of the present invention.

Fig. 7 is a perspective view of a second part of the present invention.

Fig. 8 is a perspective view of the observation mechanism of the present invention.

Fig. 9 is a perspective view of a third part of the present invention.

Fig. 10 is a perspective view of the cleaning mechanism of the present invention.

Fig. 11 is a schematic perspective view of the attaching mechanism of the present invention.

FIG. 12 is a block circuit diagram of the present invention.

Fig. 13 is a schematic circuit diagram of the present invention.

In the reference symbols: 1_ vehicle body, 2_ cab, 3_ control box, 4_ controller, 5_ drive box, 6_ lift arm, 7_ fork, 8_ transmission mechanism, 81_ gear box, 82_ transmission shaft, 83_ spline shaft, 84_ internal spline tube, 85_ drive wheel, 9_ drive mechanism, 91_ mounting plate, 92_ guide block, 93_ connecting plate, 94_ guide groove, 95_ first electric push rod, 10_ lift mechanism, 101_ horizontal plate, 102_ square hole sleeve, 103_ square plate, 104_ first spring, 105_ first inclined plate block, 106_ guide seat, 107_ guide plate, 108_ second inclined plate, 109_ second electric push rod, 1010_ first distance sensor, 11_ anti-drop mechanism, 111_ mounting groove, contact plate 112_ first piston cylinder, 113_ second spring, 114_ second spring, 115_ communicating tube, 116_ second piston cylinder, 117_ stopper, 118_ pressure relief tube, 119_ electromagnetic valve, 1110_ third piston cylinder, 1111_ third spring, 1112_ second distance sensor, 12_ observation mechanism, 121_ third distance sensor, 122_ monitor, 123_ third electric putter, 124_ fixing groove, 125_ camera, 126_ transparent protection plate, 13_ cleaning mechanism, 131_ guide bar, 132_ guide sleeve, 133_ cleaning plate, 134_ fourth spring, 135_ stay wire, 136_ wire guide, 14_ attaching mechanism, 141_ inserting groove, 142_ hinge shaft, 143_ drum, 15_ warning mechanism, 151_ fourth distance sensor, 152_ buzzer.

Detailed Description

The invention is described in detail below with reference to the figures and the embodiments.

Example 1

A safe and anti-toppling forklift with an adjustable wheelbase is disclosed, as shown in figures 1-13, and comprises a forklift body 1, a cab 2, a controller 4, a driving box 5, a lifting arm 6, a fork 7, a transmission mechanism 8, a driving mechanism 9, a lifting mechanism 10 and an anti-falling mechanism 11, wherein the cab 2 is arranged in the middle of the top of the forklift body 1, the controller 4 is arranged at the lower part of the front side of the cab 2, the driving box 5 is arranged in the middle of the bottom of the forklift body 1, the lifting arm 6 is arranged at the right end of the forklift body 1 in a welding mode, the fork 7 is symmetrically arranged at the front and back of the lower side of the lifting arm 6, the transmission mechanism 8 which can facilitate the movement of the forklift body 1 is arranged at the right side of the bottom of the forklift body 1, the driving mechanism 9 is connected between the transmission mechanism 8 and the forklift body 1, the lifting mechanism 10 is arranged on the fork 7, the anti-falling mechanism 11 which can prevent the falling of goods is arranged on the fork 7, wheels are rotatably arranged at the left side of the forklift body 1, the driving box 5 is connected with a power source of the forklift body 1, the controller 4 is provided with a first switch and a second switch, and the fork 7 is connected with the lifter of the vehicle body 1.

The transmission mechanism 8 comprises a gear box 81, a transmission shaft 82, a spline shaft 83, an inner spline pipe 84 and a driving wheel 85, the gear box 81 is arranged on the right side of the bottom of the vehicle body 1, the gear box 81 is positioned on the right side of the driving box 5, the driving box 5 can be matched with the gear box 81, the transmission shaft 82 is arranged in the gear box 81 in a rotating mode, the spline shaft 83 is arranged on the front side and the rear side of the transmission shaft 82 in a welding mode, the inner spline pipe 84 is arranged on the spline shaft 83 in a sliding mode, and the driving wheel 85 is arranged on the outer side of the inner spline pipe 84.

Actuating mechanism 9 is including mounting panel 91, guide block 92, connecting plate 93 and first

electric putter

95, 1 bottom right side of automobile body is equipped with mounting panel 91 through the welded mode, mounting panel 91 is in gear box 81 right side, the symmetry is equipped with guide block 92 through the welded mode around mounting panel 91 bottom, all slidingtype is equipped with connecting plate 93 on the guide block 92, connecting plate 93 is connected with the equal rotary type of adjacent internal spline pipe 84, guide way 94 has all been opened to the connecting plate 93 left and right sides, guide way 94 and the sliding type cooperation of guide block 92, mounting panel 91 left side front and back symmetry is equipped with first electric putter 95, first electric putter 95 telescopic link all links to each other with adjacent connecting plate 93.

The lifting mechanism 10 comprises a transverse plate 101, a square hole sleeve 102, a square plate 103, a first spring 104, a first inclined plane block 105, a guide seat 106, a guide plate 107, a second inclined plane plate 108, a second electric push rod 109 and a first distance sensor 1010, be connected with diaphragm 101 between fork 7, diaphragm 101 bottom rear side is equipped with guide holder 106 through the welded mode, guide holder 106 bottom is equipped with second electric putter 109 through the welded mode, the slidingtype is equipped with deflector 107 in guide holder 106, deflector 107 front end is equipped with second inclined plane board 108, second inclined plane board 108 links to each other with second electric putter 109's telescopic link, diaphragm 101 front side bilateral symmetry is equipped with square hole cover 102, all slidingtype is equipped with square plate 103 in the square hole cover 102, all be connected with first spring 104 between square plate 103 and the diaphragm 101, square plate 103 bottom all is equipped with first inclined plane piece 105 through the welded mode, diaphragm 101 bottom front side is equipped with first distance sensor 1010.

The anti-falling mechanism 11 comprises a first piston cylinder 112, a contact plate 113, a second spring 114, a communication pipe 115, a second piston cylinder 116, a stop dog 117, a pressure relief pipe 118, a solenoid valve 119, a third piston cylinder 1110, a third spring 1111 and a second distance sensor 1112, wherein mounting grooves 111 are formed in the pallet fork 7, the first piston cylinder 112 is arranged on the left side in the mounting groove 111 in a welding mode, the contact plate 113 is arranged in the first piston cylinder 112 in a sliding mode, the second spring 114 is connected between the contact plate 113 and the adjacent first piston cylinder 112, the communication pipe 115 is arranged on the right side of the first piston cylinder 112, the second piston cylinder 116 is arranged on the right side in the mounting groove 111, the stop dog 117 is arranged in the second piston cylinder 116 in a sliding mode, the right end of the communication pipe 115 is connected to the adjacent second piston cylinder 116, the pressure relief pipe 118 is arranged on the rear side of the second piston cylinder 116, the solenoid valve 119 is arranged on the pressure relief pipe 118, the third piston cylinder 1110 is arranged on the rear side in the mounting groove 111, all slidingtype connecting rods that are equipped with in the third piston cylinder 1110, all be connected with third spring 1111 between connecting rod and the adjacent third piston cylinder 1110, third piston cylinder 1110 all links to each other with adjacent pressure release pipe 118 left end, and fork 7 bottom right side all is equipped with second distance sensor 1112.

When goods need to be transported, the forklift can be used, a power supply main switch can be pressed down to enable the forklift to be in a power-on state, a driver can sit in a cab 2, a power source of a vehicle body 1 controls a driving box 5 to work so as to drive a transmission shaft 82 to rotate, the transmission shaft 82 rotates to drive a spline shaft 83 and an internal spline pipe 84 to rotate so as to drive a driving wheel 85 to rotate, the vehicle body 1 and the upper part of the vehicle body can be moved, when a fork 7 moves to the left side of the goods, the fork 7 can continue to move rightwards, the goods can be located on the fork 7, at the moment, a contact plate 113 can move downwards, a second spring 114 is compressed, hydraulic oil in a first piston cylinder 112 flows into a second piston cylinder 116 through a communication pipe 115 to enable a stop block 117 to move upwards, and the stop block 117 can be stopped at the right side of the goods, then, the vehicle body 1 can be moved continuously, after the vehicle body is moved to a goods placing point, at the moment, under the action of the stop block 117, the fork 7 can be prevented from stopping moving rightwards, goods can slide out of the fork 7 under the action of inertia, then, the goods can be pushed away from the fork 7 towards the front side or the back side, at the moment, the contact plate 113 is not stressed any more, so that the goods can move upwards and reset under the action of the second spring 114, further, hydraulic oil can flow back into the second piston cylinder 116 through the communication pipe 115, the stop block 117 moves downwards and resets under the action of gravity, when the goods need to be placed on a goods shelf, so that no space can push the goods to move forwards and backwards, a driver can firstly move the fork 7 upwards for a certain distance, so that components on the fork 7 move along with the movement, after the distance between the first distance sensor 1010 and the ground reaches a preset value, a signal is sent out, the control module receives the signal, so that the second electric push rod 109 is in a starting state, then the second switch can be pressed, the second switch sends a signal, the control module receives the signal to control the telescopic rod of the second electric push rod 109 to extend for one second and then stop working, so as to drive the second inclined plane plate 108 and the guide plate 107 to move forwards, the second inclined plane plate 108 moves forwards to drive the first inclined plane block 105 and the square plate 103 to move downwards, the first spring 104 is compressed, at this time, the fork 7 can be controlled to move downwards, at this time, the position of the first inclined plane block 105 is lower than the height of the fork 7, at this time, under the action of the first inclined plane block 105, the lifting arm 6 can move upwards in the fork 7, so as to tilt the right side of the vehicle body 1 upwards, the driving wheel 85 is separated from the ground, the driver can press the first switch, the first switch sends a signal, the control module receives the signal to control the telescopic rod of the first electric push rod 95 to extend for one second and then stop working, the connecting plate 93 and the inner spline tube 84 move outwards, the inner spline tube 84 moves outwards to drive the driving wheel 85 to move outwards, so that the contact area formed between the whole body of the vehicle body 1 and the ground is larger, the second switch can be pressed again after the adjustment is finished, the second switch sends a signal, the control module receives the signal to control the telescopic rod of the second electric push rod 109 to shorten for one second and then stop working, so that the second inclined plate 108 and the guide plate 107 move backwards, the square plate 103 and the first inclined plate 105 move upwards and reset under the action of the first spring 104, the lifting arm 6 and the fork 7 can be reset to the state before the position of the driving wheel 85 is adjusted, a driver can control the fork 7 to move upwards to the height of a goods shelf, therefore, the contact area formed between the vehicle body 1 and the ground is larger, when goods move upwards, the vehicle body 1 cannot topple over, and the distance between the second distance sensor 1112 detects that the distance between the ground reaches a preset value, the second distance sensor 1112 sends a signal, so that the control module receives the signal to control the opening of the electromagnetic valve 119, and therefore, the contact plate 113 cannot move upwards under the stress state, so that the hydraulic oil in the second piston cylinder 116 can flow into the third piston cylinder 1110 through the pressure relief pipe 118, the connecting rod in the third piston cylinder 1110 moves leftwards, the third spring 1111 is stretched, so that the stop dog 117 moves downwards under the action of gravity and no longer blocks the goods, a worker can unload the goods, at the moment, the contact plate 113 is not stressed any more, so that the contact plate moves upwards under the action of the second spring 114 for resetting, so that the hydraulic oil can flow back into the second piston cylinder 116 through the pressure relief pipe 118 and the connecting pipe 115, the connecting rod moves rightwards for resetting under the action of the third spring 1111, and then the fork 7 can move downwards for resetting, after the first distance sensor 1010 detects that the distance between the contact plate and the ground reaches an initial value, therefore, a signal is sent, the control module receives the signal to enable the second electric push rod 109 to be in a closed state, the second distance sensor 1112 detects that the distance between the second distance sensor and the ground reaches an initial value, the second distance sensor 1112 sends the signal, the control module receives the signal to control the electromagnetic valve 119 to be closed, and after the goods are conveyed, the power master switch is pressed again to enable the forklift to be powered off.

Still including observation mechanism 12, observation mechanism 12 is including third distance sensor 121, monitor 122, third electric putter 123, camera 125 and transparent guard plate 126, the 6 middle parts of lifing arm are equipped with

third distance sensor

121, 1 top right side of automobile body is equipped with monitor 122 through the pivot rotary type, the right front side lower part of driver's cabin 2 is equipped with third electric putter 123, the telescopic link of third electric putter 123 is connected with monitor 122 rotary type, fixed slot 124 has all been opened on the right side of front side fork 7, fixed slot 124 left side is equipped with camera 125, the right side that camera 125 was kept away from to fixed slot 124 is equipped with transparent guard plate 126.

When the goods to be carried are high, the third distance sensor 121 detects that the distance between the third distance sensor 121 and the goods reaches a preset value, so that the third distance sensor 121 sends a signal, the control module receives the signal to control the telescopic rod of the third electric push rod 123 to extend for one second and stop working, so as to drive the monitor 122 to rotate to the right, at this time, the picture shot by the camera 125 is transmitted to the monitor 122, the driver can watch the picture on the monitor 122 in the cab 2, so as to know the road condition and carry out transportation work on the goods, thus avoiding the situation that the road condition is unknown and difficulty in goods transportation is increased when the line of sight is blocked by the goods, when the goods are taken down, the distance between the third distance sensor 121 and the goods reaches an initial value, so that the third distance sensor 121 sends a signal, the control module receives the signal to control the telescopic rod of the third electric push rod 123 to stop working after being shortened for one second, thereby causing the monitor 122 to be reset by rotating to the left.

The cleaning device comprises a cleaning mechanism 13, the cleaning mechanism 13 comprises guide rods 131, guide sleeves 132, a cleaning plate 133, a fourth spring 134, pull wires 135 and a guide pipe 136, the guide rods 131 are symmetrically arranged on the transparent protection plate 126 in the left-right direction, the guide sleeves 132 are arranged on the front sides of the guide rods 131 in a sliding mode, the cleaning plate 133 is connected between the guide sleeves 132 in a welding mode, the fourth spring 134 is connected between the guide sleeve 132 on the left side and the adjacent guide rod 131, the guide pipe 136 is arranged on the right side of the front-side fork 7, the pull wires 135 are connected between the cleaning plate 133 and the connecting rod on the front side, and the pull wires 135 penetrate through the guide pipe 136.

The connecting rod moves pulling wire 135 to the left, thereby drive cleaning plate 133 through pulling wire 135 and move backward, cleaning plate 133 moves backward and drives guide pin bushing 132 and move backward, fourth spring 134 is compressed, cleaning plate 133 alright clean transparent protection plate 126 of wiping, avoid having too much dust, thereby can not influence the shooting definition of camera 125, the connecting rod moves right and loosens pulling wire 135, cleaning plate 133 and guide pin bushing 132 move forward and reset under the effect of fourth spring 134, pulling wire 135 is also pulled and reset this moment.

Still including laminating mechanism 14, laminating mechanism 14 is including articulated shaft 142 and cylinder 143, and open at first inclined plane piece 105 middle part has embedded groove 141, and first inclined plane piece 105 internal rotation formula is equipped with articulated shaft 142, and articulated shaft 142 rotates on embedded groove 141, is equipped with cylinder 143 on the articulated shaft 142.

The second inclined plane plate 108 contacts with the roller 143 when moving forward, so that both the roller 143 and the hinge shaft 142 can rotate, and the roller 143 and the hinge shaft 142 move downward, so that the first inclined plane block 105 moves downward, and thus the first inclined plane block 105 is prevented from directly contacting with the second inclined plane plate 108, the loss of the first inclined plane block 105 and the second inclined plane plate 108 is reduced, and the operation is smoother.

The vehicle body warning device further comprises a warning mechanism 15, wherein the warning mechanism 15 comprises a fourth distance sensor 151 and a buzzer 152, the fourth distance sensor 151 is arranged in the middle of the vehicle body 1, and the buzzer 152 is arranged on the upper portion of the front side of the vehicle body 1.

In the process of moving the vehicle body 1, when the fourth distance sensor 151 detects that the distance between the vehicle body 1 and the goods or the person beside the vehicle body 1 reaches a preset value, the fourth distance sensor 151 sends out a signal, the control module receives the signal to control the buzzer 152 to sound, so the driver can be prompted, thereby the driver can be cautiously driven, when the fourth distance sensor 151 detects that the distance between the vehicle body 1 and the goods or the person beside the vehicle body 1 reaches a preset value, the fourth distance sensor 151 sends out a signal, and the control module receives the signal to control the buzzer 152 not to sound any more.

The vehicle body 1 is characterized by further comprising a control box 3, the control box 3 is arranged in the middle of the front side of the vehicle body 1, the control box 3 comprises a switching power supply and a control module, the switching power supply supplies power for the whole device, a power main switch is connected to the switching power supply through a circuit, and the switching power supply is electrically connected with the control module; the control module is connected with a DS1302 clock circuit and a 24C02 circuit; the first switch, the second switch, the first distance sensor 1010, the second distance sensor 1112, the third distance sensor 121, the buzzer 152 and the fourth distance sensor 151 are electrically connected with the control module, and the first electric push rod 95, the second electric push rod 109 and the third electric push rod 123 are connected with the control module through peripheral circuits.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A safe and anti-toppling forklift with an adjustable wheelbase is characterized by comprising a forklift body (1), a cab (2), a controller (4), a driving box (5), a lifting arm (6), a fork (7), a transmission mechanism (8), a driving mechanism (9), a lifting mechanism (10) and an anti-falling mechanism (11), wherein the cab (2) is arranged in the middle of the top of the forklift body (1), the controller (4) is arranged on one side of the cab (2), the driving box (5) is arranged in the middle of the bottom of the forklift body (1), the lifting arm (6) is arranged at one end of the forklift body (1), the fork (7) is symmetrically and slidably arranged on one side of the lifting arm (6), the transmission mechanism (8) is arranged on one side of the bottom of the forklift body (1), the driving mechanism (9) is connected between the transmission mechanism (8) and the forklift body (1), the lifting mechanism (10) is arranged on the fork (7), and the anti-falling mechanism (11) is arranged on the fork (7), the rotary type of automobile body (1) one side is equipped with the wheel, and drive box (5) are connected with the power supply of automobile body (1), are equipped with first switch and second switch on controller (4), and fork (7) link to each other with the lift of automobile body (1).

2. The safe and anti-toppling forklift with the adjustable wheelbase is characterized in that the transmission mechanism (8) comprises a gear box (81), a transmission shaft (82), a spline shaft (83), an internal spline pipe (84) and driving wheels (85), the gear box (81) is arranged on one side of the bottom of the forklift body (1), the gear box (81) is arranged on one side of the driving box (5), the driving box (5) can be matched with the gear box (81), the transmission shaft (82) is rotatably arranged in the gear box (81), the spline shaft (83) is arranged on each of two sides of the transmission shaft (82), the internal spline pipe (84) is slidably arranged on each spline shaft (83), and the driving wheels (85) are arranged on each of two sides of the internal spline pipe (84).

3. A safe tipping-proof truck with adjustable wheelbase according to claim 2, characterized in that the drive mechanism (9) comprises a mounting plate (91), a guide block (92), connecting plate (93) and first electric putter (95), automobile body (1) bottom one side is equipped with mounting panel (91), mounting panel (91) are in gear box (81) one side, mounting panel (91) bottom symmetry is equipped with guide block (92), all slidingtype is equipped with connecting plate (93) on guide block (92), connecting plate (93) are connected with the equal rotary type of adjacent internal spline pipe (84), guide way (94) have all been opened to connecting plate (93) both sides, guide way (94) and guide block (92) slidingtype cooperation, mounting panel (91) one side symmetry is equipped with first electric putter (95), first electric putter (95) telescopic link all links to each other with adjacent connecting plate (93).

4. The safe and anti-toppling forklift with the adjustable wheelbase according to claim 3, characterized in that the lifting mechanism (10) comprises a transverse plate (101), a square hole sleeve (102), a square plate (103), a first spring (104), a first inclined plane block (105), a guide seat (106), a guide plate (107), a second inclined plane plate (108), a second electric push rod (109) and a first distance sensor (1010), the transverse plate (101) is connected between the forks (7), the guide seat (106) is arranged on one side of the bottom of the transverse plate (101), the second electric push rod (109) is arranged on the bottom of the guide seat (106), the guide plate (107) is arranged in the guide seat (106) in a sliding manner, the second inclined plane plate (108) is arranged at one end of the guide plate (107), the second inclined plane plate (108) is connected with a telescopic rod of the second electric push rod (109), the square hole sleeve (102) is symmetrically arranged on one side of the transverse plate (101), square board (103) all are equipped with in square hole cover (102) slidingtype, all are connected with first spring (104) between square board (103) and diaphragm (101), and square board (103) bottom all is equipped with first sloping piece (105), and diaphragm (101) bottom one side that is close to square hole cover (102) is equipped with first distance sensor (1010).

5. The safe and toppling-proof forklift with the adjustable wheelbase according to claim 4, is characterized in that the anti-toppling-proof mechanism (11) comprises a first piston cylinder (112), a contact plate (113), a second spring (114), a communicating pipe (115), a second piston cylinder (116), a stop block (117), a pressure relief pipe (118), an electromagnetic valve (119), a third piston cylinder (1110), a third spring (1111) and a second distance sensor (1112), wherein mounting grooves (111) are formed in the pallet fork (7), the first piston cylinders (112) are arranged on one sides in the mounting grooves (111), the contact plates (113) are arranged in the first piston cylinders (112) in a sliding manner, the second springs (114) are connected between the contact plates (113) and the adjacent first piston cylinders (112), the communicating pipes (115) are arranged on one sides of the first piston cylinders (112), the second piston cylinders (116) are arranged on the sides, far away from the first piston cylinders (112), in the mounting grooves (111), all slidingtype is equipped with dog (117) in second piston cylinder (116), the one end of communicating pipe (115) is all connected on adjacent second piston cylinder (116), second piston cylinder (116) one side all is equipped with pressure release pipe (118), all be equipped with solenoid valve (119) on pressure release pipe (118), one side all is equipped with third piston cylinder (1110) in mounting groove (111), all slidingtype is equipped with the connecting rod in third piston cylinder (1110), all be connected with third spring (1111) between connecting rod and adjacent third piston cylinder (1110), third piston cylinder (1110) all link to each other with adjacent pressure release pipe (118) one end, fork (7) bottom one side that is close to second piston cylinder (116) all is equipped with second distance sensor (1112).

6. The safe anti-toppling forklift with the adjustable wheelbase according to claim 5 is characterized by further comprising an observation mechanism (12), wherein the observation mechanism (12) comprises a third distance sensor (121), a monitor (122), a third electric push rod (123), a camera (125) and a transparent protection plate (126), the third distance sensor (121) is arranged in the middle of the lifting arm (6), the monitor (122) is rotatably arranged on one side of the top of the forklift body (1), the third electric push rod (123) is arranged on one side of the cab (2), a telescopic rod of the third electric push rod (123) is rotatably connected with the monitor (122), fixing grooves (124) are formed in one side of the fork (7) on one side, the camera (125) is arranged on one side of the fixing grooves (124), and the transparent protection plate (126) is arranged on one side, far away from the camera (125), of the fixing grooves (124).

7. The safe anti-toppling forklift with the adjustable wheelbase is characterized by further comprising a cleaning mechanism (13), wherein the cleaning mechanism (13) comprises guide rods (131), guide sleeves (132), cleaning plates (133), fourth springs (134), pull wires (135) and wire guide pipes (136), the guide rods (131) are symmetrically arranged on the transparent protection plate (126), the guide sleeves (132) are arranged on one sides of the guide rods (131) in a sliding mode, the cleaning plates (133) are connected between the guide sleeves (132), the fourth springs (134) are connected between the guide sleeves (132) on one side and the adjacent guide rods (131), the wire guide pipes (136) are arranged on one side of the pallet fork (7), the pull wires (135) are connected between the cleaning plates (133) and connecting rods on one side, and the pull wires (135) penetrate through the wire guide pipes (136).

8. The safe and toppling-proof forklift with the adjustable wheelbase as claimed in claim 7, further comprising a joint mechanism (14), wherein the joint mechanism (14) comprises a hinge shaft (142) and a roller (143), the middle part of the first slope piece (105) is provided with an embedded groove (141), the first slope piece (105) is rotatably provided with the hinge shaft (142), the hinge shaft (142) rotates on the embedded groove (141), and the roller (143) is arranged on the hinge shaft (142).

9. The safe anti-toppling forklift with the adjustable wheelbase as claimed in claim 8, further comprising a warning mechanism (15), wherein the warning mechanism (15) comprises a fourth distance sensor (151) and a buzzer (152), the fourth distance sensor (151) is arranged in the middle of the forklift body (1), and the buzzer (152) is arranged on the upper portion of one side of the forklift body (1).

10. The safe and anti-toppling forklift with the adjustable wheelbase as claimed in claim 9, further comprising a control box (3), wherein the control box (3) is arranged in the middle of one side of the forklift body (1), the control box (3) comprises a switching power supply and a control module, the switching power supply supplies power to the whole forklift, the switching power supply is connected with a power main switch through a circuit, and the switching power supply is electrically connected with the control module; the control module is connected with a DS1302 clock circuit and a 24C02 circuit; the first switch, the second switch, the first distance sensor (1010), the second distance sensor (1112), the third distance sensor (121), the buzzer (152) and the fourth distance sensor (151) are electrically connected with the control module, and the first electric push rod (95), the second electric push rod (109) and the third electric push rod (123) are connected with the control module through peripheral circuits.