Intelligent forklift and matched tray thereof

Abstract

The intelligent forklift comprises a forklift body, a lifting mechanism, a positioning front fork and a tray, the lifting mechanism is installed at the front end of the forklift body, the positioning front fork comprises a front fork body, a telescopic positioning assembly and a driving part, and the front fork body is slidably connected with the lifting end of the lifting mechanism along the two sides, perpendicular to the lifting direction, of the lifting mechanism; the telescopic positioning assembly is installed on the loading face of the front fork body, and the telescopic direction of the telescopic positioning assembly faces the two sides of a vehicle body. The fixed end of the driving part is fixedly connected with the front fork body, and the driving end of the driving part is in transmission connection with the telescopic power input end of the telescopic positioning assembly so as to drive the telescopic end of the telescopic positioning assembly to protrude out of the front fork body and position a tray placed on the loading face of the front fork body. The telescopic positioning assembly is installed on the loading face of the front fork body, and the technical problem that positioning between a front fork and a tray of a traditional forklift is not firm is solved.

Description

Technical Field

[0001] The present invention relates to the field of transport machinery, and more particularly to an intelligent forklift and a matching pallet thereof. Background Art

[0002] In the prior art, forklifts are usually used to transport goods over short distances, and pallets are usually used in conjunction with the goods being transported to make them faster and more stable during transportation and lifting;

[0003] The front forks of traditional forklifts need to be manually adjusted in spacing, and are fixed to the pallet by static friction;

[0004] However, during use, the distance between the front forks needs to be manually adjusted before loading, and the pallet limited by static friction during transportation is prone to relative sliding with the front forks during braking or turning, posing a safety hazard.

[0005] Therefore, how to provide a new intelligent forklift whose front fork can automatically position the pallet while avoiding safety hazards such as rollover during braking and turning is an urgent problem that technicians in this field need to solve. Summary of the invention

[0006] In view of this, the present invention provides an intelligent forklift, aiming to solve the technical problem of the unreliable positioning between the front fork and the pallet of the above-mentioned traditional forklift.

[0007] An intelligent forklift, comprising: a body, a lifting mechanism, a positioning front fork and a pallet;

[0008] The lifting mechanism is installed at the front end of the vehicle body;

[0009] The positioning front fork includes a front fork body, a telescopic positioning assembly and a driving part. The front fork body is slidably connected to the lifting end of the lifting mechanism and along both sides thereof perpendicular to its lifting direction. The telescopic positioning assembly is installed on the loading surface of the front fork body, and its telescopic direction is toward the two sides of the vehicle body. The fixed end of the driving part is tightly connected to the front fork body, and the driving end of the driving part is transmission-connected to the telescopic power input end of the telescopic positioning assembly to drive the telescopic end of the telescopic positioning assembly to protrude outside the front fork body, so as to position the pallet placed on the loading surface of the front fork body.

[0010] Through the above technical scheme, the present invention solves the technical problem of unreliable positioning between the front fork and the pallet of a traditional forklift, by installing a telescopic positioning component on the loading surface of the front fork body, and the telescopic end of the telescopic positioning component protrudes outside the front fork body under the drive of the driving part, so as to position the pallet, thereby limiting the relative position between the positioning front fork and the pallet, and avoiding relative sliding between the positioning front fork and the pallet.

[0011] Preferably, the front fork body is L-shaped, comprising a connecting arm arranged along the height direction and a supporting arm arranged along the horizontal direction, the loading surface is the upper end surface of the supporting arm, the connecting arm and the lifting end of the lifting mechanism are slidably connected along the directions of both sides of the vehicle body, the bottom end of the connecting arm is fixedly connected to one end of the supporting arm, and the fixed end of the driving part is tightly connected to the supporting arm.

[0012] Preferably, the lifting mechanism includes a gantry, a connecting frame and a lifting drive unit, the bottom end of the gantry is rotatably connected to the vehicle body and its rotation axis is parallel to the directions of both sides of the vehicle body; the connecting frame is arranged along the directions of both sides of the vehicle body and is located in front of the gantry, and the connecting frame is slidably connected to the gantry along its height direction; the fixed end of the lifting drive unit is tightly connected to the gantry, the driving end of the lifting drive unit is tightly connected to the connecting frame, and the connecting arm is slidably connected to the connecting frame along the directions of both sides of the vehicle body.

[0013] Preferably, it also includes a transverse driving unit, which is installed on the connecting frame; the connecting arm includes a connecting arm body and a transverse guiding unit, the bottom end of the connecting arm body is fixedly connected to the support arm, the transverse guiding unit is slidably connected to the connecting frame along the two sides of the vehicle body and is tightly connected to the upper end of the connecting arm body, and the driving end of the transverse driving unit is transmission-connected to the connecting arm body through a transmission unit to drive it to move along the two sides of the vehicle body.

[0014] Preferably, the connecting frame includes a support frame, a support strip, a transverse guide shaft and a sliding seat, the support frame is a door-shaped frame arranged along the two side directions of the vehicle body and located in front of the door frame, and the transverse driving unit is installed on the support frame; the two ends of the support strip are fastened to the bottom end of the support frame, and a plate surface of the support strip located in front of the vehicle body is in contact and abuts with a side of the connecting arm body away from the support arm; the transverse guide shaft is arranged along the two side directions of the vehicle body and fastened to the support frame, the transverse guiding unit is slidably connected to the transverse guide shaft, the sliding seat is fastened to the side of the support frame facing the door frame, and is slidably connected to the door frame along its height direction, and the lifting end of the lifting drive unit is fastened to the sliding seat.

[0015] Preferably, the transverse driving part is a servo motor, and the transmission part includes a bidirectional screw and a nut. The servo motor is installed on the support frame, and both ends of the bidirectional screw are rotatably connected to the support frame along the directions of both sides of the vehicle body, and one end thereof is transmission-connected to the power output end of the servo motor. The nut is fixed to the side of the connecting arm body away from the support arm and is spirally connected to the bidirectional screw in the horizontal direction. There are two positioning front forks, and the two positioning front forks are located at the center positions of the directions of both sides of the vehicle body in a mirror-symmetrical manner. The servo motor drives the bidirectional screw to rotate to drive the two positioning front forks to approach or move away at the same time.

[0016] Preferably, the telescopic positioning assembly includes a strip-shaped positioning support plate 1, a positioning support plate 2 and a transmission rod, the first end of the positioning support plate 1 is rotatably connected to the first end of the positioning support plate 2; the second end of the positioning support plate 1 is rotatably connected to the support arm through a rotating shaft 2; the transmission rod is arranged along the radial direction of the rotating shaft 2 and one end of the transmission rod is fixed to the second end of the positioning support plate 1, the driving end of the driving part is hinged to the other end of the transmission rod, the second end of the positioning support plate 2 is slidably and rotatably connected to the support arm along the front and rear directions of the vehicle body, the rotation of the positioning support plate 1 drives the rotating connection between the positioning support plate 1 and the positioning support plate 2 to bulge out from the side wall surface of the support arm, and the side wall surfaces of the protruding parts of the positioning support plate 1 and the positioning support plate 2 constitute a positioning surface; the tray has a positioning notch adapted to the positioning surface.

[0017] Preferably, it also includes a pressure sensor, which is installed on the upper surface of the positioning support plate 1 and the positioning support plate 2 to sense the pressure value of the pallet and the goods loaded thereon corresponding to its position.

[0018] Preferably, the tray includes: a top plate, a bottom plate and a positioning support block, the top plate and the bottom plate are arranged in parallel with a gap therebetween for inserting the support arm, the upper and lower ends of the positioning support block are respectively fixedly connected to the top plate and the bottom plate, and the side wall surface of the positioning support block is provided with a positioning groove which is arranged corresponding to the positioning surface of the telescopic positioning assembly and can be adaptably abutted.

[0019] Preferably, the number of the positioning support blocks is two, the two positioning support blocks are symmetrically arranged in the length direction of the bottom plate, the positioning notch is a V-shaped notch, and the V-shaped notch and the positioning surface are arranged correspondingly.

[0020] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a smart forklift having the following beneficial effects:

[0021] 1. The positioning surface of the telescopic positioning assembly is designed to be retractable relative to the support arm, and the telescopic positioning assembly will not cause interference during the insertion of the tray;

[0022] 2. The V-shaped positioning surface has a large tolerance for the relative position of the two positioning parties during the positioning process, and can also automatically correct the position of the pallet during the positioning process to achieve automatic positioning;

[0023] 3. The connecting arm body is connected to the bidirectional screw through a nut. When the bidirectional screw rotates, the two positioning forks move closer or farther away at the same time. The two positioning forks can simultaneously position the V-shaped notches on both sides of the pallet, thus realizing automatic positioning in the length and width directions of the pallet.

[0024] 4. Pressure sensors are installed on the upper surfaces of positioning support plate 1 and positioning support plate 2. After the pallet is positioned, the relative positions of the four pressure sensors and the relative positions of the forklift and the vehicle body are fixed. The center of gravity of the pallet and the cargo is calculated based on the values ​​fed back by the four pressure sensors, and then the center of gravity of the entire forklift after loading is recalculated. By controlling the acceleration of the brakes or the speed of turning during driving, safety hazards such as rollover can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional schematic diagram of an intelligent forklift provided by the present invention;

[0026] Figure 2 A three-dimensional schematic diagram of an intelligent forklift (with hidden pallet) provided by the present invention;

[0027] Figure 3 It is a schematic diagram of the assembly of the door frame, the connecting frame and the positioning front fork provided by the present invention;

[0028] Figure 4 It is a schematic diagram of assembling the connecting frame and the transverse driving part provided by the present invention;

[0029] Figure 5 An exploded schematic diagram of the positioning front fork provided by the present invention;

[0030] Figure 6 A three-dimensional schematic diagram of another viewing angle of the positioning front fork provided by the present invention;

[0031] Figure 7 A front view of a tray provided by the present invention;

[0032] Figure 8 for Figure 7 AA section view;

[0033] Fig. 9 A front view of the tray and the positioning front fork provided by the present invention when assembled;

[0034] Fig.10 for Fig. 9 BB cross-sectional view.

[0035] Among them: 1-body; 2-lifting mechanism; 3-positioning front fork; 4-tray; 21-gantry; 22-connecting frame; 31-front fork body; 32-telescopic positioning assembly; 33-driving unit; 34-pressure sensor; 41-top plate; 42-bottom plate; 43-positioning support block; 44-middle support block; 221-support frame; 222-support strip; 223-lateral guide shaft; 224-sliding seat; 311-connecting arm; 312-support arm; 321-positioning support plate one; 322-positioning support plate two; 323-transmission rod; 324-limiting nail; 351-servo motor; 361-bidirectional screw; 362-nut; 431-V-shaped notch; 3111-connecting arm body; 3112-lateral guide unit. DETAILED DESCRIPTION

[0036] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0037] See attached Figure 1-10 , the embodiment of the present invention discloses an intelligent forklift, comprising: a body 1, a lifting mechanism 2, a positioning front fork 3 and a pallet 4;

[0038] The lifting mechanism 2 is installed at the front end of the vehicle body 1;

[0039] The positioning front fork 3 includes a front fork body 31, a telescopic positioning assembly 32 and a driving part 33. The front fork body 31 is slidably connected to the lifting end of the lifting mechanism 2 and along both sides thereof perpendicular to its lifting direction. The telescopic positioning assembly 32 is installed on the loading surface of the front fork body 31, and its telescopic direction is toward the two sides of the vehicle body 1; the fixed end of the driving part 33 is tightly connected to the front fork body 31, and the driving end of the driving part 33 is transmission-connected to the telescopic power input end of the telescopic positioning assembly 32 to drive the telescopic end of the telescopic positioning assembly 32 to protrude outside the front fork body 31, so as to position the pallet 4 placed on the loading surface of the front fork body 31.

[0040] In order to further optimize the above technical solution, the front fork body 31 is L-shaped, which includes a connecting arm 311 arranged along the height direction and a supporting arm 312 arranged along the horizontal direction. The loading surface is the upper end surface of the supporting arm. The connecting arm 311 and the lifting end of the lifting mechanism 2 are slidingly connected along the directions of both sides of the vehicle body 1. The bottom end of the connecting arm 311 is fixedly connected to one end of the supporting arm 312, and the fixed end of the driving part 33 is fastened to the supporting arm 312.

[0041] In order to further optimize the above technical solution, the lifting mechanism 2 includes a gantry 21, a connecting frame 22 and a lifting drive unit. The bottom end of the gantry 21 is rotatably connected to the vehicle body 1 and its rotation axis is parallel to the two side directions of the vehicle body 1; the connecting frame 22 is arranged along the two side directions of the vehicle body 1 and is located in front of the gantry 21, and the connecting frame 22 is slidably connected to the gantry 21 along its height direction; the fixed end of the lifting drive unit is tightly connected to the gantry 21, the driving end of the lifting drive unit is tightly connected to the connecting frame 22, and the connecting arm 311 is slidably connected to the connecting frame 22 along the two side directions of the vehicle body 1.

[0042] In order to further optimize the above technical solution, it also includes a transverse driving unit, which is installed on the connecting frame 22; the connecting arm 311 includes a connecting arm main body 3111 and a transverse guiding unit 3112, the bottom end of the connecting arm main body 3111 is fixedly connected to the support arm 312, the transverse guiding unit 3112 is slidably connected to the connecting frame 22 along the two sides of the vehicle body 1 and is tightly connected to the upper end of the connecting arm main body 3111, and the driving end of the transverse driving unit is connected to the connecting arm main body 3111 through a transmission unit to drive it to move along the two sides of the vehicle body 1.

[0043] In order to further optimize the above technical scheme, the connecting frame 22 includes a support frame 221, a support strip 222, a transverse guide shaft 223 and a sliding seat 224. The support frame 221 is a door-shaped frame arranged along the two sides of the vehicle body 1 and located in front of the door frame 21, and the transverse driving unit is installed on the support frame 221; the two ends of the support strip 222 are fastened to the bottom end of the support frame 221, and a plate surface of the support strip 222 located in front of the vehicle body 1 contacts and abuts against a side of the connecting arm body 3111 away from the support arm 312; the transverse guide shaft 223 is arranged along the two sides of the vehicle body 1 and fastened to the support frame 221, the transverse guide part 3112 is slidably connected to the transverse guide shaft 223, the sliding seat 224 is fastened to the side of the support frame 221 facing the door frame 21, and is slidably connected to the door frame 21 along its height direction, and the lifting end of the lifting drive unit is fastened to the sliding seat 224.

[0044] In order to further optimize the above technical solution, the transverse driving part is a servo motor 351, and the transmission part includes a bidirectional screw 361 and a nut 362. The servo motor 351 is installed on the support frame 221, and the two ends of the bidirectional screw 361 are rotatably connected to the support frame 221 along the two sides of the vehicle body 1, and one end thereof is transmission-connected to the power output end of the servo motor 351. The nut 362 is fixed to the side of the connecting arm body 3111 away from the support arm 312 and is spirally connected to the bidirectional screw 361 along the horizontal direction. There are two positioning front forks 3, and the two positioning front forks 3 are located at the center position of the two sides of the vehicle body 1 in a mirror-symmetrical manner. The servo motor 351 drives the bidirectional screw 361 to rotate to drive the two positioning front forks 3 to approach or move away at the same time.

[0045] In order to further optimize the above technical scheme, the telescopic positioning assembly 32 includes a strip-shaped positioning support plate 1 321, a positioning support plate 2 322 and a transmission rod 323. The first end of the positioning support plate 1 321 is rotatably connected to the first end of the positioning support plate 2 322; the second end of the positioning support plate 1 321 is rotatably connected to the support arm 312 through the rotating shaft 2; the transmission rod 323 is arranged along the radial direction of the rotating shaft 2 and one end of the transmission rod 323 is fixed to the second end of the positioning support plate 1 321, the driving end of the driving part 33 is hinged to the other end of the transmission rod 323, the second end of the positioning support plate 2 322 is slidable and rotatably connected to the support arm 312 along the front and rear directions of the vehicle body 1, the positioning support plate 1 321 rotates to drive the rotation connection between the positioning support plate 1 321 and the positioning support plate 2 322 to bulge out from the side wall surface of the support arm 312, and the side wall surfaces of the protruding parts of the positioning support plate 1 321 and the positioning support plate 2 322 constitute the positioning surface; the tray 4 has a positioning notch adapted to the positioning surface.

[0046] Specifically, the upper surface of the support arm 312 is provided with a mounting sink facing the outside of the vehicle body 1, a truncated cone is arranged on the side of the positioning support plate 321 facing the mounting sink corresponding to the rotating axis 2, a circular sink corresponding to the truncated cone is provided on the upper surface of the mounting sink, the second end of the positioning support plate 321 is rotatably connected to the circular sink of the mounting sink through the truncated cone, a through avoidance hole is provided between the side wall of the circular sink and the inner wall of the support arm 312, the first end of the transmission rod 323 is fixed to the truncated cone, and the second end of the transmission rod 323 passes through the avoidance hole and is hinged to the driving end of the driving part 33.

[0047] More specifically, the driving part is a hydraulic rod 1, the fixed end of the hydraulic rod 1 is hinged to the inner wall of the support arm 312, and the telescopic end of the hydraulic rod 1 is hinged to the second end of the transmission rod 323. As a result, the spatial layout is more compact and the impact on the stroke of the positioning front fork 3 is reduced.

[0048] More specifically, the telescopic positioning assembly 32 also includes a limiting nail 324, which includes a coaxially arranged nail cap and nail body. The second end of the positioning support plate 321 is provided with a mounting hole coaxially arranged with the circular table, and a nail cap sinker coaxial with the mounting hole is also provided on its upper surface. The nail body of the limiting nail 324 passes through the mounting hole and is fastened to the lower surface of the circular sinker. The nail cap is located in the nail cap sinker to limit the positioning support plate 321 along the height direction of the vehicle body 1.

[0049] Specifically, the second positioning support plate 322 is a Z-shaped strip, and the upper surface of the first end of the second positioning support plate 322 contacts the lower surface of the first end of the first positioning support plate 1 321. The first end of the second positioning support plate 322 is provided with a mounting hole 2 along the rotation axis of the positioning support plate 1 321, and the lower surface of the first end of the second positioning support plate 322 is provided with a nail cap sinker 2 coaxial with the mounting hole 2. The nail body of the limiting nail 324 passes through the mounting hole 2 and is fastened to the lower surface of the first end of the positioning support plate 1 321. The first end of the second positioning support plate 322 is rotatably connected to the first end of the positioning support plate 1 321 through the limiting nail 324, and the nail cap is located in the nail cap sinker 2 to limit the support plate 2 322 along the height direction of the vehicle body 1.

[0050] Specifically, an elongated hole is provided on the upper surface of the mounting platform along the front-rear direction of the vehicle body 1, and an elongated platform is provided on the lower surface of the support arm 312 corresponding to the elongated hole. The nail body of the limiting nail 324 passes through the elongated hole and is fastened to the lower surface of the second end of the positioning support plate 322. The second end of the positioning support plate 322 is rotatably and slidably connected to the elongated hole of the support arm 312 through the limiting nail 324, and the nail cap is located in the elongated platform to limit the second end of the support plate 322 along the height direction of the vehicle body 1.

[0051] More specifically, the upper surfaces of the positioning support plate 1 321 and the positioning support plate 2 322 are flush with the upper surface of the support arm 312. In the retracted state of the telescopic positioning assembly 32, the side walls of the positioning support plate 1 321 and the positioning support plate 2 322 located on the outside of the vehicle body 1 are flush with the side walls of the support arm 312. Therefore, the retracted state of the telescopic positioning assembly 32 will not affect the insertion of the tray.

[0052] In order to further optimize the above technical solution, a pressure sensor 34 is also included. The pressure sensor 34 is installed on the upper surface of the positioning support plate 1 321 and the positioning support plate 2 322 to sense the pressure value of the pallet 4 corresponding to its position and the goods loaded therein.

[0053] In order to further optimize the above technical solution, the tray 4 includes: a top plate 41, a bottom plate 42 and a positioning support block 43. The top plate 41 and the bottom plate 42 are arranged in parallel, and there is a gap between them for inserting the support arm 312. The upper and lower ends of the positioning support block 43 are respectively fixedly connected to the top plate 41 and the bottom plate 42, and the side wall surface of the positioning support block 43 is provided with a positioning groove which is arranged corresponding to the positioning surface of the telescopic positioning assembly 32 and can be adaptably abutted.

[0054] Specifically, the tray 4 further comprises a middle support block 44, which is located at the center of the bottom plate 42 along the length direction and is arranged symmetrically along the center of the bottom plate 42 in the width direction, and the upper and lower ends of the middle support block are respectively fixedly connected to the support strip (222) and the bottom plate (42), thereby enhancing the stability of the tray 4.

[0055] In order to further optimize the above technical solution, the number of positioning support blocks 43 is two, and the two positioning support blocks 43 are symmetrically arranged in the length direction of the bottom plate 42. The positioning notch is a V-shaped notch 431, and the V-shaped notch 431 and the positioning surface are arranged correspondingly.

[0056] Specifically, it also includes a hydraulic rod 2, a hydraulic station, a controller and an operation panel. The fixed end of the hydraulic rod 2 is hinged to the vehicle body 1, and its driving end is hinged to the door frame 21. The hydraulic station, the controller and the operation panel are all installed on the vehicle body (1). The hydraulic station is connected to the hydraulic rod 2 through a pipeline. The controller is connected to the drive system of the vehicle body 1, the control module of the hydraulic station, the operation panel, the control module of the lifting drive unit, the control module of the drive unit 33, the servo motor 351 and the pressure sensor 34 through electrical signals.

[0057] The specific principles and usage methods of the intelligent forklift and its matching pallet provided in this embodiment are as follows:

[0058] 1. The control module of the control controller controls the driving unit 33 to drive the telescopic positioning assembly 32 to retract to be flush with the outer wall surface of the support arm 312;

[0059] 2. The control controller controls the servo motor 351 to drive the bidirectional screw 361 to rotate, and the distance between the two positioning front forks 3 is adjusted to correspond to the insertion opening of the tray 4;

[0060] 3. The control module of the hydraulic station is controlled by the control controller to adjust the angle of the gantry 21 by telescoping the second hydraulic rod, and adjust the upper end surface of the support arm 312 until it is parallel to the top plate 41 of the tray 4;

[0061] 4. The control module of the lifting drive unit is controlled by the operation controller to adjust the height of the connecting frame 22 and adjust the support arm 312 to be located between the top plate 41 and the bottom plate 42;

[0062] 5. The controller controls the driving system to allow the support arm 312 to enter the interior of the tray 4;

[0063] 6. The control module of the control controller controls the driving unit 33 to drive the telescopic positioning assembly 32 to fully extend;

[0064] 7. The control controller controls the servo motor 351 to drive the bidirectional screw 361 to rotate until the positioning surface contacts and cooperates with the V-shaped notch 431;

[0065] 8. The control module of the lifting drive unit is controlled by the operation controller to raise the height of the connecting frame 22 until the bottom plate 42 is completely off the ground;

[0066] 9. The controller calculates the center of gravity of the pallet 4 and the loaded goods based on the signal fed back by the pressure sensor 34, and then recalculates the center of gravity of the entire forklift after loading. Combined with the operating status of the drive system, the controller calculates the safe range of braking acceleration and turning speed during driving, and feeds back to the driver through the control panel.

[0067] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent forklift, characterized in that: include: A vehicle body (1), a lifting mechanism (2), a positioning front fork (3) and a pallet (4); The lifting mechanism (2) is installed at the front end of the vehicle body (1); The positioning front fork (3) comprises a front fork body (31), a telescopic positioning assembly (32) and a driving part (33); the front fork body (31) is slidably connected to the lifting end of the lifting mechanism (2) and along both sides thereof perpendicular to its lifting direction; the telescopic positioning assembly (32) is mounted on the loading surface of the front fork body (31), and its telescopic direction faces the directions of both sides of the vehicle body (1); the fixed end of the driving part (33) is tightly connected to the front fork body (31); the driving end of the driving part (33) is transmission-connected to the telescopic power input end of the telescopic positioning assembly (32), so as to drive the telescopic end of the telescopic positioning assembly (32) to protrude outside the front fork body (31), so as to position the pallet (4) placed on the loading surface of the front fork body (31).

2. The intelligent forklift according to claim 1, characterized in that: The front fork body (31) is L-shaped, and comprises a connecting arm (311) arranged in the height direction and a supporting arm (312) arranged in the horizontal direction; the loading surface is the upper end surface of the supporting arm; the connecting arm (311) and the lifting end of the lifting mechanism (2) are slidably connected along the two sides of the vehicle body (1); the bottom end of the connecting arm (311) is fixedly connected to one end of the supporting arm (312); and the fixed end of the driving part (33) is tightly connected to the supporting arm (312).

3. The intelligent forklift according to claim 2, characterized in that: The lifting mechanism (2) comprises a gantry (21), a connecting frame (22) and a lifting drive unit, wherein the bottom end of the gantry (21) is rotatably connected to the vehicle body (1) and its rotation axis is parallel to the directions on both sides of the vehicle body (1); the connecting frame (22) is arranged along the directions on both sides of the vehicle body (1) and is located in front of the gantry (21); the connecting frame (22) is slidably connected to the gantry (21) along their height direction; the fixed end of the lifting drive unit is tightly connected to the gantry (21), the driving end of the lifting drive unit is tightly connected to the connecting frame (22), and the connecting arm (311) is slidably connected to the connecting frame (22) along the directions on both sides of the vehicle body (1).

4. The intelligent forklift according to claim 3, characterized in that: It also includes a transverse driving unit, which is installed on the connecting frame (22); the connecting arm (311) includes a connecting arm body (3111) and a transverse guiding unit (3112), the bottom end of the connecting arm body (3111) is fixedly connected to the support arm (312), the transverse guiding unit (3112) is slidably connected to the connecting frame (22) along the two sides of the vehicle body (1) and is tightly connected to the upper end of the connecting arm body (3111), and the driving end of the transverse driving unit is connected to the connecting arm body (3111) through a transmission unit to drive it to move along the two sides of the vehicle body (1).

5. The intelligent forklift according to claim 4, characterized in that: The connecting frame (22) comprises a supporting frame (221), a supporting strip (222), a transverse guide shaft (223) and a sliding seat (224); the supporting frame (221) is a door-shaped frame arranged along the two sides of the vehicle body (1) and located in front of the door frame (21); the transverse movement driving unit is installed on the supporting frame (221); the two ends of the supporting strip (222) are fastened to the bottom end of the supporting frame (221); a plate surface of the supporting strip (222) located in front of the vehicle body (1) is connected to the connecting arm body (3 111) is in contact with and abuts against a side away from the support arm (312); the transverse guide shaft (223) is arranged along the two sides of the vehicle body (1) and is firmly connected to the support frame (221); the transverse guide portion (3112) is slidably connected to the transverse guide shaft (223); the sliding seat (224) is firmly connected to a side of the support frame (221) facing the door frame (21) and is slidably connected to the door frame (21) along its height direction; the lifting end of the lifting drive portion is firmly connected to the sliding seat (224).

6. The intelligent forklift according to claim 5, characterized in that: The transverse driving part is a servo motor (351), and the transmission part includes a bidirectional screw (361) and a nut (362). The servo motor (351) is installed on the support frame (221), and the two ends of the bidirectional screw (361) are rotationally connected with the support frame (221) along the two sides of the vehicle body (1), and one end thereof is transmission-connected with the power output end of the servo motor (351). The nut (362) is fixed on the side of the connecting arm body (3111) away from the support arm (312) and is spirally connected with the bidirectional screw (361) along the horizontal direction. The number of the positioning front forks (3) is two, and the two positioning front forks (3) are located at the center position of the two sides of the vehicle body (1) in a mirror-symmetrical manner. The servo motor (351) drives the bidirectional screw (361) to rotate to drive the two positioning front forks (3) to approach or move away at the same time.

7. The intelligent forklift according to any one of claims 2 to 6, characterized in that: The telescopic positioning assembly (32) comprises a strip-shaped positioning support plate 1 (321), a positioning support plate 2 (322) and a transmission rod (323); the first end of the positioning support plate 1 (321) is rotatably connected to the first end of the positioning support plate 2 (322); the second end of the positioning support plate 1 (321) is rotatably connected to the support arm (312) via a rotating shaft 2; the transmission rod (323) is arranged along the radial direction of the rotating shaft 2 and one end of the transmission rod (323) is fixed to the second end of the positioning support plate 1 (321); the driving end of the driving part (33) is connected to the transmission rod (323). The other end of the movable rod (323) is hinged, and the second end of the positioning support plate 2 (322) is connected to the support arm (312) in a sliding and rotational manner along the front-rear direction of the vehicle body (1). The positioning support plate 1 (321) rotates to drive the rotational connection between the positioning support plate 1 (321) and the positioning support plate 2 (322) to protrude from the side wall surface of the support arm (312), and the side wall surfaces of the protruding parts of the positioning support plate 1 (321) and the positioning support plate 2 (322) constitute a positioning surface; and the tray (4) has a positioning notch adapted to the positioning surface.

8. The intelligent forklift according to claim 7, characterized in that: It also includes a pressure sensor (34), which is installed on the upper surface of the positioning support plate 1 (321) and the positioning support plate 2 (322) to sense the pressure value of the pallet (4) and the goods loaded thereon corresponding to its position.

9. The intelligent forklift according to claim 7, characterized in that: The tray (4) comprises: a top plate (41), a bottom plate (42) and a positioning support block (43); the top plate (41) and the bottom plate (42) are arranged in parallel and have a gap therebetween for inserting the support arm (312); the upper and lower ends of the positioning support block (43) are respectively fixedly connected to the top plate (41) and the bottom plate (42); the side wall surface of the positioning support block (43) is provided with a positioning notch which is arranged corresponding to and can be adapted to abut against the positioning surface of the telescopic positioning assembly (32).

10. The intelligent forklift according to claim 9, characterized in that: The number of the positioning support blocks (43) is two, and the two positioning support blocks (43) are symmetrically arranged in the length direction of the bottom plate (42); the positioning notch is a V-shaped notch (431), and the V-shaped notch (431) and the positioning surface are arranged correspondingly.

Images