CN210620143U

CN210620143U - Three-way stacking forklift

Info

Publication number: CN210620143U
Application number: CN201921631020.3U
Authority: CN
Inventors: 陈奎锋; 吕维林; 潘小军
Original assignee: Suzhou Pioneer Material Handling Equipment and Technology Co Ltd
Current assignee: Suzhou Pioneer Material Handling Equipment and Technology Co Ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-05-26
Anticipated expiration: 2029-09-27

Abstract

The utility model discloses a three-way stacking forklift, which comprises a forklift body and a fork head body, wherein the fork head body is provided with a fork, a side-shifting assembly and a rotating assembly, the fork is connected on the rotating assembly, and the rotating assembly is connected on the side-shifting assembly; the forklift body is provided with a first mounting assembly, and the fork head body is provided with a second mounting assembly; the first mounting assembly comprises an inner sliding frame, and an upper side moving sliding groove, a lower side moving sliding groove, a side moving belt and a side moving pressing plate are arranged on the inner sliding frame; the second mounting assembly comprises an upper side moving roller matched with the upper side moving chute, a lower side moving roller matched with the lower side moving chute and a side moving pressure wheel matched with the side moving pressure plate; the side shift assembly comprises a side shift shaft, a side shift execution wheel and a side shift motor; the side shift execution wheel is fixed on the side shift shaft and matched with the side shift belt. The utility model discloses a three-dimensional stack fork truck can reduce energy consumption, noise reduction, raise the efficiency of fork when the side is moved and is rotatory, improves fork truck's duration and control accuracy, and the operation is more stable.

Description

Three-way stacking forklift

Technical Field

The utility model relates to a fork truck technical field, concretely relates to three-dimensional stack fork truck.

Background

In recent years, with the rise of the logistics industry, a three-way stacking forklift is intensively researched by various large forklift host factories, the position of a forklift body in a stacking roadway is unchanged, and a fork head independently laterally moves and rotates to drive a pallet fork to stack or unstack. The existing mainstream three-way stacking forklift is provided with a hydraulic transmission fork head, the hydraulic transmission fork head drives a pallet fork to laterally move and rotate, and meanwhile, the hydraulic transmission fork head integrally lifts along a lifting track on a forklift body, so that three-way stacking is realized. The hydraulic transmission fork head relies on the hydraulic oil transmission power in the pipeline, need dispose the hydraulic pressure pipeline of overlength in order to match the lift, and this operating mode makes the energy consumption of hydraulic transmission fork head high, the noise is big, fork truck continuation of the journey ability is poor, and the sidesway can not accurate control with the rotational position, has the limitation to AGV's development. Meanwhile, the pallet fork bears a large load, so that the connection part of the fork head and the forklift bears large pressure, and therefore, a new mounting structure needs to be designed on the forklift to realize the connection of the fork head and the forklift so as to ensure that the fork head can realize stable and safe operation.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a reasonable in design can reduce energy consumption, noise reduction, the raising the efficiency of fork when the side is moved and is rotatory, improves fork truck's duration, and stability is good, and the high three-dimensional stack fork truck of security, it includes following technical scheme:

a three-way stacking forklift comprises a forklift body and a fork head body, wherein a pallet fork, a side shifting assembly and a rotating assembly are arranged on the fork head body, the pallet fork is connected to the rotating assembly, and the rotating assembly is connected to the side shifting assembly;

the forklift body is provided with a first mounting assembly, and the fork head body is provided with a second mounting assembly; the first mounting assembly comprises an inner sliding frame, and an upper side moving sliding groove, a lower side moving sliding groove, a side moving belt and a side moving pressing plate are arranged on the inner sliding frame; the second mounting assembly comprises an upper side moving roller matched with the upper side moving chute, a lower side moving roller matched with the lower side moving chute and a side moving pressure wheel matched with the side moving pressure plate;

the side shift assembly comprises a side shift shaft, a side shift execution wheel and a side shift motor; the side shift execution wheel is fixed on the side shift shaft and matched with the side shift belt; the side shift shaft is connected with the case through a bearing, the middle section of the side shift shaft is connected with a side shift transmission mechanism, and the power input end of the side shift transmission mechanism is connected with the side shift motor;

the rotating assembly comprises a rotating shaft and a rotating motor; the rotating shaft is arranged parallel to the side shifting shaft and is connected with the case through a bearing; the near section of the rotating shaft is connected with a rotary transmission mechanism, and the power input end of the rotary transmission mechanism is connected with the rotating motor; the middle section of the rotating shaft is connected with the pallet fork; the far-end section of the rotating shaft is connected with a rotating mechanical limiting component, and the rotating mechanical limiting component supports and limits the rotating shaft when the rotating shaft stops rotating.

As a further improvement of the present invention, the rotating mechanical limiting component comprises a rotating disc and a top shaft, the rotating disc is assembled on a rotating shaft, and the rotating disc is symmetrically provided with two sets of limiting notches by taking the rotating shaft as a center; the apical axis supports on the foot rest of quick-witted case, and can remove along the direction of perpendicular to rotation axis, the tip of apical axis is equipped with mechanical stopper, the apical axis overcoat is equipped with the spring, quick-witted case foot rest is connected at the both ends of spring, spring application of force makes mechanical stopper screens in the apical axis be in the spacing breach when the rotation axis rotation stops.

As a further improvement of the utility model, the side is installed to the back seat of machine case and is moved mechanical stop part, the side move the both ends in area be equipped with the side moves mechanical stop part complex butt portion.

As a further improvement of the utility model, the side is moved the execution wheel and is the gear, the side is moved the area and is the rack, gear and rack toothing convert the rotation of gear into the rectilinear movement of gear along the rack to bear component force and moment of flexure on fork left and right sides direction and the fore-and-aft direction simultaneously.

As a further improvement of the utility model, the side is moved drive mechanism and is gear drive mechanism, and it moves output gear, transition gear one and transition gear two including the side, the side is moved output gear and is connected the side and move the motor, transition gear one through the bearing connect the machine case, and with the side is moved output gear meshing, transition gear two fix the side move the axle the middle section, and with the meshing of transition gear.

As a further improvement, the side moves the assembly and still includes the side and moves the monitor, the side moves the monitor and moves feedback gear and potentiometer one including the side, the side move the feedback gear pass through the bearing connect the machine case, and with the side moves the meshing of output gear, the potentiometer one is fixed on the side moves the feedback gear.

As a further improvement of the utility model, the side shift motor is provided with a first electromagnetic brake, which outputs power to the side shift output gear through a first speed reducer; the side shift motor is connected with a side shift controller which operates according to a side shift signal of the side shift controller.

As a further improvement of the utility model, rotary transmission is gear drive, and it includes rotating gear, duplicate gear and rotatory output gear, rotating gear fixes on the rotation axis, duplicate gear pass through the bearing connect quick-witted case, and its first tooth portion with rotating gear meshing, second tooth portion with rotatory output gear meshing, rotatory output gear connects the rotating electrical machines.

As a further improvement of the present invention, the rotary assembly further comprises a rotary monitor, and the rotary monitor comprises a second potentiometer fixed on the rotary shaft.

As a further improvement of the present invention, the rotating electrical machine is provided with a second electromagnetic brake, which outputs power to the rotating output gear through a second speed reducer; the rotating motor is connected with a rotating controller and operates according to a rotating signal of the rotating controller.

The utility model has the advantages that:

one of the two-way stacking forklift is provided with the electric fork head instead of the traditional hydraulic transmission fork head, so that the lateral movement and rotation functions of the fork are realized, the energy consumption of the fork during lateral movement and rotation can be reduced, the noise is reduced, the efficiency is improved, the cruising ability of the forklift is improved, the control precision is improved, and the structure and the circuit design are simpler; the control system provides a better control environment for the subsequent control of the AGV of the forklift, and reduces the difficulty of the structural design and the line design of the whole forklift.

And secondly, the designed lateral movement mechanical limiting part protects the electric fork head to fall off under extreme conditions, and the designed rotary mechanical limiting part can better lock the fork when the rotary shaft rotates to the limit positions on two sides, so that the fork is prevented from shaking in the stacking or unstacking process, and the operation stability and the safety and reliability of the electric fork head are improved.

Thirdly, through setting up first installation component on the fork truck body, set up second installation component on the jaw body, guarantee that the jaw body can be in smooth operation on the balladeur train including, realize the side and move the action, its connection structure is stable simultaneously, can decompose the gravity of jaw, avoids single part atress too much, can improve equipment life to improve the operating stability and the fail safe nature of jaw.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a three-way stacking forklift in an embodiment of the present invention;

FIG. 2 is a schematic structural view of the fork head body according to an embodiment of the present invention;

FIG. 3 is a schematic view of a portion of the structure of FIG. 2;

FIG. 4 is a schematic structural view of a second mounting assembly in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a rotating mechanical limiting component in an embodiment of the present invention.

The reference numbers in the figures illustrate: 2. a pallet fork; 8. a side shift motor; 10. a chassis; 14. a rotating electric machine; 16. a side shift output gear; 18. a first transition gear; 20. a second transition gear; 22. a side shift feedback gear; 24. a first potentiometer; 26. a first electromagnetic brake; 27. a second electromagnetic brake; 28. a first speed reducer; 30. a lateral movement controller; 32. a rotating gear; 34. a duplicate gear; 36. a rotary output gear; 38. a second potentiometer; 40. a second speed reducer; 42. a foot rest; 44. reinforcing the support plate; 46. a rotation controller; 48. a complete machine controller; 50. a fork mounting section; 52. a turntable; 54. a top shaft; 56. a limiting notch; 58. a mechanical stop block; 60. a spring; 100. a prong body; 110. moving the roller upwards; 120. the roller is moved at the lower side; 130. a side shift actuator wheel; 140. laterally moving the pressure wheel; 141. a reinforcing plate; 150. a lateral movement mechanical limiting component; 151. laterally moving a limiting block; 152. a base; 160. a side shift shaft; 200. an inner carriage; 210. an upper side sliding chute; 220. a lower side sliding chute; 230. laterally moving the belt; 240. laterally moving the pressing plate; 250. an abutment portion.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Examples

Referring to fig. 1 to 5, the three-way stacking forklift in the present embodiment includes a forklift body and a fork head body 100, the fork head body 100 is provided with a fork 2, a side shift assembly and a rotation assembly, the fork 2 is connected to a fork mounting portion 50 of the rotation assembly, and the rotation assembly is connected to the side shift assembly. The rotating assembly drives the pallet fork 2 to rotate, and the side shifting assembly drives the rotating assembly and the pallet fork 2 to move together laterally, wherein the side shifting is the side shifting towards the body of the three-way stacking forklift.

Specifically, referring to fig. 2 to 4, a first mounting assembly is arranged on the forklift body, and a second mounting assembly is arranged on the fork head body 100; the first mounting assembly comprises an inner sliding frame 200, the inner sliding frame 200 is assembled on a forklift body, and an upper side moving sliding groove 210, a lower side moving sliding groove 220, a side moving belt 230 and a side moving pressing plate 240 are arranged on the inner sliding frame 200; the second mounting assembly includes an upper moving roller 110 engaged with the upper moving chute 210, a lower moving roller 120 engaged with the lower moving chute 220, and a side moving pressure wheel 140 engaged with the side moving pressure plate 240.

The side shift assembly comprises a side shift shaft 160, a side shift actuating wheel 130 and a side shift motor 8; the side shift actuating wheel 130 is fixed on the side shift shaft 160 and is matched with the side shift belt 230; the side shift shaft 160 is connected with the case 10 through a bearing, the middle section of the side shift shaft 160 is connected with a side shift transmission mechanism, and the power input end of the side shift transmission mechanism is connected with the side shift motor 8; the side shift transmission mechanism and the side shift motor 8 are both arranged in the case 10. The side shift transmission mechanism transmits the power output by the side shift motor 8 to the side shift shaft 160 to drive the side shift shaft 160 to rotate, and the cooperation of the side shift execution wheel 130 and the side shift belt 230 converts the rotation of the side shift shaft 160 into the linear movement of the side shift execution wheel 130 along the side shift belt 230, so that the pallet fork 2 and the rotating assembly are shifted together in a side direction.

A side shift mechanical stopper 150 is attached to the rear seat of the housing 10, and abutting portions 250 that engage with the side shift mechanical stopper 160 are provided at both ends of the side shift belt 230.

As shown in fig. 3-4, in this embodiment, the side shift mechanical limiting component 150 includes a base 152 and two sets of side shift limiting blocks 151 installed on two sides of the base 152, and the two sets of side shift limiting blocks 151 are respectively matched with the abutting portions 250 at two ends of the side shift belt 230, so as to protect the fork head body 100 from falling off under extreme conditions, and improve the safety and reliability of the operation of the fork head body 100.

The lateral movement executing wheel 130 is matched with the lateral movement belt 230 to drive the fork head body 100 to laterally move, the upper side moving roller 110 is matched with the upper side moving chute 210, the lower side moving roller 120 is matched with the lower side moving chute 220 to support the fork head body 100 in the horizontal direction, and the lateral movement pressing plate 240 and the lateral movement pressure wheel 140 are matched to support the fork head body 100 in the vertical direction.

In order to effectively ensure the stability of the jaw body 100, the jaw body 100 is prevented from rotating. In the present embodiment, the number of the upper moving rollers 110 is two, the two upper moving rollers 110 are arranged in parallel, the number of the lower moving rollers 120 is two, and the two lower moving rollers 120 are arranged in parallel.

In this embodiment, a side-shifting pressure wheel 140 is provided between the two sets of side-shifting actuation wheels 130. Since the side shift pressure wheel 140 bears a large pressure caused by the fork body 100, in order to ensure the safety and stability of the side shift pressure wheel 140, the second mounting assembly further includes a reinforcing plate 141, the reinforcing plate 141 is fixed on the fork body 100 by bolts, and the side shift pressure wheel 140 is assembled on the reinforcing plate 141.

After the fork body 100 and the forklift body are assembled through the mounting structure, the upper side moving roller 110 and the upper side moving chute 210 are abutted against one side inner wall close to the fork body, the lower side moving roller 120 and the lower side moving chute 220 are abutted against one side inner wall close to the forklift body, the stress directions of the two are opposite, the two are mutually matched to support the fork body 100 in the horizontal direction, the side moving pressing plate 240 is pressed by the side moving pressure wheel 140 downwards, and is matched with the side moving pressure wheel 140 to support the fork body 100 in the vertical direction. The pressure caused by too much fork body 100 loaded between the side shift execution wheel 130 and the side shift belt 230 is avoided, so that the damage of the parts is avoided, and the stability and the safety of the fork 100 during the side shift are ensured.

The above-mentioned rotating assembly includes rotating shaft 12 and rotating electrical machine 14; the rotating shaft 12 and the side shift shaft 160 are disposed in parallel and connected to the housing 10 through a bearing, a rotation transmission mechanism is connected to a proximal portion of the rotating shaft 12, a power input end of the rotation transmission mechanism is connected to the rotating electric machine 14, and both the rotation transmission mechanism and the rotating electric machine 14 are disposed in the housing 10; a fork mounting portion 50 is provided at a middle portion of the rotary shaft 12 to connect the fork 2. The rotation transmission mechanism transmits power output from the rotating motor 14 to the rotating shaft 12 to drive the rotating shaft 12 to rotate, thereby rotating the fork 2. The purpose of the rotation of the forks 2 is to change direction, usually to fork the load on one side to the opposite side, i.e. the target angle of rotation of the forks 2 is usually 180 °, and after rotation the cooperating side shifting and lifting of the stack or unstacking is stopped. In order to ensure that the pallet fork 2 does not shake during lateral movement or lifting after rotation stop, the electric fork head according to the embodiment further includes a mechanical rotation limiting member connected to a distal section of the rotating shaft 12, and the mechanical rotation limiting member supports and limits the rotating shaft 12 when the rotating shaft 12 stops rotating. Referring to fig. 5, in the technical solution of this embodiment, a preferred implementation scheme of the rotating mechanical limiting component is as follows:

the rotating mechanical limiting component comprises a rotating disc 52 and a top shaft 54, the rotating disc 52 is assembled on the rotating shaft 12, and two groups of limiting notches 56 are symmetrically arranged on the rotating disc 52 by taking the rotating shaft 12 as a center; the top shaft 54 is supported on the foot stool 42 of the housing 10 and can move in the direction perpendicular to the rotation axis 12, a mechanical stopper 58 is provided at the end of the top shaft 54, a spring 60 is sleeved outside the top shaft 54, the housing foot stool is connected to both ends of the spring 60, and the mechanical stopper 58 is locked in the stopper notch 56 by the spring 60 applying force to the top shaft 54 when the rotation axis 12 stops rotating. The top shaft 54 can stretch out and draw back along the direction facing the rotating disc 52 or being opposite to the rotating disc 52 under the action of the spring 60, in the technical scheme of the embodiment, when the rotating disc 52 rotates 180 degrees clockwise or anticlockwise along with the rotating shaft 12, one group of limiting notches 56 are opposite to the top shaft 54, the rotating shaft 12 stops after rotating 180 degrees, and the pallet fork 2 moves or/and lifts on the current position to complete stacking or unstacking. When the rotating shaft 12 stops rotating, the top shaft 54 moves towards the rotating disc 52 under the force of the spring 60, so that the mechanical limit block 58 is blocked in the limit notch 56, the pallet fork 2 is better locked, the pallet fork 2 is prevented from shaking in the stacking or unstacking process, and the operation stability and the safety and reliability of the electric fork head are improved.

The mechanical limiting block 58 is contacted with the disk edge of the rotating disk 52 when the rotating disk 52 rotates, and in order to reduce contact friction force, the mechanical limiting block 58 is in point contact with the disk edge of the rotating disk 52, and therefore the mechanical limiting block 58 is designed to be of a roller structure; meanwhile, the mechanical limiting block 58 of the roller structure is beneficial to quickly and smoothly separating from the limiting notch 56 when the turntable 52 rotates again after stopping.

As a preferred solution of this embodiment, the side shift executing wheel 130 is a gear, the side shift belt 230 is a rack, and the engagement of the gear and the rack converts the rotation of the gear into the linear movement of the gear along the rack and simultaneously receives the force components and the bending moment in the left-right direction and the front-back direction of the fork head body 100.

In other embodiments of this embodiment, the side shift actuating wheel 130 may also be a sprocket, and the side shift belt 230 may be a chain, and the sprocket and the chain cooperate with each other.

The moving precision of the meshing of the gear and the rack is better than that of the chain wheel and the matching.

Specifically, as shown in fig. 2 to 3, the side shift transmission mechanism is a gear transmission mechanism including a side shift output gear 16, a first transition gear 18 and a second transition gear 20, the side shift output gear 16 is connected to the side shift motor 8, the first transition gear 18 is connected to the housing 10 through a bearing and is engaged with the side shift output gear 16, and the second transition gear 20 is fixed to a middle section of the side shift shaft 160 and is engaged with the first transition gear 18. The side-shift motor 8 is provided with an electromagnetic brake I26 which outputs power to the side-shift output gear 16 through a speed reducer I28. The side-shift motor 8 outputs side-shift power to the side-shift output gear 16 after being decelerated by the first speed reducer 28, and transmits the power to the side-shift shaft 160 through the meshing transmission of the first transition gear 18 and the second transition gear 20.

Referring to fig. 2, the rotation transmission mechanism is a gear transmission mechanism including a rotation gear 32, a dual gear 34, and a rotation output gear 36, the rotation gear 32 is fixed to the rotation shaft 12, the dual gear 34 is coupled to the housing 10 via a bearing, a first tooth portion thereof is engaged with the rotation gear 32, a second tooth portion thereof is engaged with the rotation output gear 36, and the rotation output gear 36 is coupled to the rotation motor 14. The rotating electric machine 14 is provided with a second electromagnetic brake 27, which outputs power to the rotation output gear 36 through a second reduction gear 40. The rotating electric machine 14 outputs the rotating power to the rotation output gear 36 after being decelerated by the second decelerator 40, and transmits the power to the rotating shaft 12 through the meshing transmission of the duplex gear 34 and the rotating gear 32 in sequence.

In the technical scheme of the embodiment, the lateral shifting motor and the rotating motor are respectively driven, and the lateral shifting power and the rotating power are transmitted to the lateral shifting shaft 160 and the rotating shaft 12 through the lateral shifting gear transmission mechanism and the rotating gear transmission mechanism, so that the lateral shifting and the rotating of the pallet fork 2 are realized, compared with the traditional hydraulic transmission fork, the current of the fork head in working can be saved, compared with the hydraulic transmission fork, at least 50% of energy consumption is saved, the cruising ability of the forklift during working when the battery capacity with the same configuration is increased, the warehouse storage efficiency is improved, the use cost of the forklift is reduced, and the noise of the fork head in working is reduced, due to the absence of hydraulic internal leakage, the position of the pallet fork can be controlled more accurately, a better control environment is provided for the control of a subsequent forklift AGV, the structural design of the whole forklift is reduced, and the difficulty of line design is reduced.

In the electric fork head of the embodiment, the side shift and the rotation action of the fork 2 are independent respectively, namely the fork can be rotated independently, moved independently, or moved laterally and rotated simultaneously, based on which, the side shift motor 8 is connected with a side shift controller 30 which operates according to the side shift signal of the side shift controller 30; the rotary electric machine 14 is connected to a rotation controller 46, and operates in response to a rotation signal from the rotation controller 46. The side shift motor 8 and the rotary motor 14 are controlled to rotate by the side shift controller 30 and the rotary controller 46 independently of each other. Of course, the overall controller 48 may be designed, and the overall controller 48 generates commands to control the lateral movement controller 30 and the rotation controller 46.

In order to more precisely control the position accuracy of the side shift and rotation, the side shift assembly further comprises a side shift monitor, the side shift monitor comprises a side shift feedback gear 22 and a potentiometer-24, the side shift feedback gear 22 is connected with the case 10 through a bearing and meshed with the side shift output gear 16, and the potentiometer-24 is fixed on the side shift feedback gear 22. The rotary assembly further includes a rotary monitor including a second potentiometer 38 secured to the rotary shaft 12. The lateral moving position and the rotating angle are fed back in real time through the first potentiometer 24 and the second potentiometer 38, the lateral moving and rotating position accuracy is controlled more accurately, a better control environment is provided for the control of a follow-up forklift AGV, and the difficulty of the structural design and the line design of the whole forklift is reduced.

The case 10 is supported on a foot stand 42, one end of the side shift shaft 160 is connected with the case 10 through a bearing, and the other end is connected with the foot stand 42 through a bearing; the part of the rotating shaft 12 extending out of the case 10 is positioned in a steering avoiding space at the side of the foot stool 42; the foot stool 42 is provided with a reinforcing support plate 44. The supporting strength and the carrying capacity of the fork head are improved.

The electric fork head replaces the traditional hydraulic transmission fork head to realize the lateral movement and the rotation of the fork, can reduce the energy consumption of the fork during the lateral movement and the rotation, reduce the noise, improve the efficiency, improve the cruising ability of the fork truck, improve the control precision, and has simpler structure and circuit design and more stable operation; the control system provides a better control environment for the subsequent control of the AGV of the forklift, and reduces the difficulty of the structural design and the line design of the whole forklift.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. A three-way stacking forklift, its characterized in that: the forklift comprises a forklift body and a fork head body, wherein a fork, a side shifting assembly and a rotating assembly are arranged on the fork head body, the fork is connected to the rotating assembly, and the rotating assembly is connected to the side shifting assembly;

2. A three-way stacking forklift as recited in claim 1, wherein: the rotary mechanical limiting component comprises a rotary table and a top shaft, the rotary table is assembled on a rotary shaft, and two groups of limiting notches are symmetrically arranged on the rotary table by taking the rotary shaft as a center; the apical axis supports on the foot rest of quick-witted case, and can remove along the direction of perpendicular to rotation axis, the tip of apical axis is equipped with mechanical stopper, the apical axis overcoat is equipped with the spring, quick-witted case foot rest is connected at the both ends of spring, spring application of force makes mechanical stopper screens in the apical axis be in the spacing breach when the rotation axis rotation stops.

3. A three-way stacking forklift as recited in claim 1, wherein: the rear seat of the case is provided with a lateral movement mechanical limiting component, and two ends of the lateral movement belt are provided with abutting parts matched with the lateral movement mechanical limiting component.

4. A three-way stacking forklift as recited in claim 1, wherein: the lateral movement executing wheel is a gear, the lateral movement belt is a rack, the gear is meshed with the rack to convert the rotation of the gear into the linear movement of the gear along the rack, and the component force and the bending moment in the left-right direction and the front-back direction of the fork head are simultaneously borne.

5. A three-way stacking forklift as recited in claim 1, wherein: the side shift transmission mechanism is a gear transmission mechanism and comprises a side shift output gear, a first transition gear and a second transition gear, the side shift output gear is connected with a side shift motor, the first transition gear is connected with the case through a bearing and meshed with the side shift output gear, and the second transition gear is fixed in the middle section of the side shift shaft and meshed with the first transition gear.

6. A three-way stacking forklift as recited in claim 5, wherein: the side shift assembly further comprises a side shift monitor, the side shift monitor comprises a side shift feedback gear and a first potentiometer, the side shift feedback gear is connected with the case through a bearing and meshed with the side shift output gear, and the first potentiometer is fixed on the side shift feedback gear.

7. A three-way stacking forklift as recited in claim 5, wherein: the side shifting motor is provided with a first electromagnetic brake which outputs power to the side shifting output gear through a first speed reducer; the side shift motor is connected with a side shift controller which operates according to a side shift signal of the side shift controller.

8. A three-way stacking forklift as recited in claim 1, wherein: the rotary transmission mechanism is a gear transmission mechanism and comprises a rotary gear, a duplicate gear and a rotary output gear, the rotary gear is fixed on the rotary shaft, the duplicate gear is connected with the case through a bearing, a first tooth part of the duplicate gear is meshed with the rotary gear, a second tooth part of the duplicate gear is meshed with the rotary output gear, and the rotary output gear is connected with a rotary motor.

9. A three-way stacking forklift as recited in claim 8, wherein: the rotating assembly further comprises a rotating monitor, and the rotating monitor comprises a second potentiometer fixed on the rotating shaft.

10. A three-way stacking forklift as recited in claim 8, wherein: the rotating motor is provided with a second electromagnetic brake which outputs power to the rotating output gear through a second speed reducer; the rotating motor is connected with a rotating controller and operates according to a rotating signal of the rotating controller.