CN111170230A - Distance-adjusting and side-moving accessory realized by double motors - Google Patents

Distance-adjusting and side-moving accessory realized by double motors Download PDF

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Publication number
CN111170230A
CN111170230A CN202010136155.3A CN202010136155A CN111170230A CN 111170230 A CN111170230 A CN 111170230A CN 202010136155 A CN202010136155 A CN 202010136155A CN 111170230 A CN111170230 A CN 111170230A
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China
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port
hydraulic motor
valve
communicated
electromagnetic valve
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CN202010136155.3A
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CN111170230B (en
Inventor
王亮
宗晓兵
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Banyitong Science & Technology Developing Co ltd
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Banyitong Science & Technology Developing Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • B66F9/142—Movements of forks either individually or relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • B66F9/142—Movements of forks either individually or relative to each other
    • B66F9/143—Movements of forks relative to each other - symmetric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • B66F9/142—Movements of forks either individually or relative to each other
    • B66F9/144—Movements of forks relative to each other - independent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • B66F9/146—Side shift, i.e. both forks move together sideways relative to fork support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/22—Hydraulic devices or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

The invention discloses a distance adjusting and side shifting accessory realized by double motors, which comprises a fork frame, wherein driving sprockets are respectively arranged at the driving ends of a left hydraulic motor and a right hydraulic motor; the driving chain wheel and the driven chain wheel are provided with a transmission chain group, one end of a tensioning mechanism is hinged in the transmission chain group, the other end of the tensioning mechanism is hinged with a chain hanging plate, one end, far away from the tensioning mechanism, of the chain hanging plate is fixed on the transmission chain group, the tensioning mechanism and the chain hanging plate form a closed loop, and a left fork and a right fork are fixedly arranged on the chain hanging plate respectively; and the left hydraulic motor and the right hydraulic motor are driven by a hydraulic control system. The invention provides a distance adjusting and side shifting accessory realized by double motors, which can realize constant-speed stable stepless distance adjustment, has wider front side view, small front suspension distance, reliable side shifting of loaded goods, strong environmental adaptability and great popularization value.

Description

Distance-adjusting and side-moving accessory realized by double motors
Technical Field
The invention relates to the technical field of forklift mechanical equipment, in particular to an attachment capable of realizing distance adjustment and lateral movement by double motors.
Background
Fork truck wide application promotes and the container operation in the medium-sized cargo handling in harbour pier, open-air goods yard, all needs the operation personnel to use the manpower to carry out appropriate adjustment to the fork scope of opening and shutting under many operating modes to adapt to the transport of unidimensional goods, manpower is adjusted not only hard and efficiency is lower, seriously influences the transportation efficiency of goods. In order to save space as much as possible in places where goods such as wharfs or warehouses are concentrated, the positions of the goods need to be adjusted when the goods are stacked, and the placement efficiency of a forklift which does not have a side shifting function is low. In addition, the attachment structure that possesses side and roll adjustment function is comparatively complicated at present, divide into fork, side basically and move the front truck, side and move the rear truck, has led to fork truck front overhang apart from longer, and the dead weight is heavier, has reduced fork truck's bearing capacity, and the field of vision is relatively poor.
In the prior art, an integral hydraulic distance adjusting fork with the application number of '201720795036.2' comprises a distance adjusting frame arranged on a front lifting frame of the fork truck and two L-shaped forks capable of adjusting opening and closing distances on the distance adjusting frame, wherein a horizontally arranged guide rod is arranged on the distance adjusting frame, a cylindrical guide sleeve matched with the guide rod is fixed at the top of a vertical part of each fork, lubricating grease is coated on the inner ring of the guide sleeve and the guide rod, an upper hook and a lower clamping groove are respectively arranged at the upper part and the lower part of the rear side of the vertical part, distance adjusting oil cylinders in opposite horizontal directions are arranged at two sides of the distance adjusting frame, a horizontally transverse sliding rod is arranged at the lower side of each distance adjusting frame, the tail ends of output rods of the two distance adjusting oil cylinders are respectively hinged to the two upper hooks; the hydraulic distance-adjusting oil cylinder is used for directly driving the serial-eye type pallet fork to adjust the distance in an electrodeless way, so that the front suspension distance of the forklift is shortened, and the load capacity is greatly improved; the product structure is simpler, and frictional resistance is less, can furthest reduce the loss and accomplish energy conversion.
However, the method still has the obvious defects in the using process: 1. the fork of the device is mainly driven to move by the distance-adjusting oil cylinder, but the initial speed and the running speed of the oil cylinder are influenced by more factors, so that the oil cylinder is difficult to ensure to run stably all the time, and the stable and uniform stepless distance adjustment of the fork cannot be realized; 2. the oil cylinder for driving the fork in the device usually needs a larger inner diameter of the cylinder barrel, so the front suspension distance is larger, and the two staggered large-volume oil cylinders transversely block the sight, so the visual field is poorer, and the driving safety is not improved; 3. the synchronism that two forks removed among the above-mentioned device is relatively poor, this because hydro-cylinder one end has the pole chamber, and the other end is rodless chamber, because there is the difference of no pole at both ends, can lead to pressure difference to there is the problem of synchronism error, makes above-mentioned device can not be used for taking goods side to move, otherwise will lead to fork interval grow, goods to fall because the fork removes asynchronous, has the potential safety hazard, therefore its application scope is very restricted.
Disclosure of Invention
The invention aims to provide a distance adjusting and side shifting accessory realized by double motors so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a distance adjustment and side shifting attachment realized by double motors comprises a fork frame, wherein a left hydraulic motor and a right hydraulic motor are respectively installed in motor installation holes formed in the upper left side and the lower right side of the fork frame, the distances from the motor installation holes of the left hydraulic motor and the right hydraulic motor to the central plane of the fork frame are the same, and driving sprockets are respectively installed at the driving ends of the left hydraulic motor and the right hydraulic motor;
the fork frame is provided with rotating shafts at the upper right part and the lower left part respectively through bearings, the distances from the centers of the rotating shafts to the center plane of the fork frame are the same, and driven chain wheels are fixedly arranged on the rotating shafts respectively;
the driving chain wheel and the driven chain wheel are provided with a transmission chain group, one end of a tensioning mechanism is hinged in the transmission chain group, the other end of the tensioning mechanism is hinged with a chain hanging plate, one end, far away from the tensioning mechanism, of the chain hanging plate is fixed on the transmission chain group, the tensioning mechanism and the chain hanging plate form a closed loop, and a left fork and a right fork are fixedly arranged on the chain hanging plate respectively;
and the left hydraulic motor and the right hydraulic motor are driven by a hydraulic control system.
Preferably, straining device includes the adjusting collar, one end screw thread is provided with left-handed adjusting screw in the adjusting collar, left side connecting hole has been seted up on the left-handed adjusting screw, run through the chain group round pin axle that is provided with the driving chain group in the connecting hole of a left side for realize the articulated of straining device and driving chain group, other end screw thread is provided with dextrorotation adjusting screw in the adjusting collar, dextrorotation adjusting screw has last the right connecting hole of having seted up, it is provided with the connecting plate to hang articulated on the link joint, the fixed connecting axle that is provided with on the connecting plate, the connecting axle sets up in the connecting hole of a right side for realize straining device and hang the articulated of link.
Preferably, the right-handed adjusting screw is provided with a locking nut in a threaded manner, and the locking nut is tightly attached to the adjusting sleeve.
Preferably, the hydraulic control system comprises a pump station, a multi-way valve, a two-way overflow valve, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve and a sixth electromagnetic valve, wherein a port P and a port T of the multi-way valve are respectively communicated with a port P0 and a port T0 of the pump station, and a port A and a port B of the multi-way valve are respectively communicated with a port V1 and a port V2 of the two-way overflow valve;
the port P1 of the first electromagnetic valve and the port P2 of the second electromagnetic valve are communicated with a port C1 of the two-way overflow valve in parallel, and the port T1 of the first electromagnetic valve and the port T2 of the second electromagnetic valve are communicated with a port C2 of the two-way overflow valve in parallel;
the port A1 of the first electromagnetic valve is communicated with the port V3 of the left hydraulic motor, and the port B1 of the first electromagnetic valve is communicated with the port C3 of the left hydraulic motor;
the port A2 of the second electromagnetic valve is communicated with the port C4 of the right hydraulic motor, and the port B2 of the second electromagnetic valve is communicated with the port V4 of the right hydraulic motor;
the port M3 of the third electromagnetic valve is communicated with the port C4 of the right hydraulic motor, and the port M4 of the third electromagnetic valve is communicated with the port C3 of the left hydraulic motor;
the port M1 of the fourth electromagnetic valve is communicated with the port C4 of the right hydraulic motor, and the port M2 of the fourth electromagnetic valve is communicated with the port V3 of the left hydraulic motor;
an M5 port of the fifth electromagnetic valve is communicated with a V4 port of the right hydraulic motor, and an M6 port of the fifth electromagnetic valve is communicated with a C3 port of the left hydraulic motor;
and the port M7 of the sixth electromagnetic valve is communicated with the port V4 of the right hydraulic motor, and the port M8 of the sixth electromagnetic valve is communicated with the port V3 of the left hydraulic motor.
Preferably, the multiway valve is a manual three-position four-way valve, the first electromagnetic valve and the second electromagnetic valve are two-position four-way valves, and the third electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve are two-position two-way valves.
Preferably, the two-way relief valve serves as a relief valve for protecting the left hydraulic motor and the right hydraulic motor.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, double-motor chain transmission is arranged on the basis of the fork frame, and compared with the traditional oil cylinder driving, the starting speed and the running speed of the double-motor chain transmission can be kept stable, so that stable stepless distance adjustment is realized;
2. the side-shifting front frame and the side-shifting rear frame of the side shifter are different in structure from the side-shifting front frame and the side-shifting rear frame of the existing side shifter, the side-shifting front frame and the side-shifting rear frame are integrated, so that the front side view is wider, the radius of a driving chain wheel and a driven chain wheel can be larger or smaller, the normal operation of a pallet fork cannot be influenced, a gap is reserved between an upper group of transmission chain group and a lower group of transmission chain group, the volume of an oil cylinder is larger, the gap of the transmission chain group is far larger than the gap between the upper group of oil cylinder and the lower group of oil cylinder, in addition, the thickness of the chain wheel is far smaller than the cylinder;
3. the device can realize the side movement of the goods, wherein the left fork and the right fork are respectively driven by the left hydraulic motor and the right hydraulic motor, the synchronism of the motors is better, and the problem that the oil quantity difference exists because one end of a traditional series oil cylinder is provided with a rod cavity and the other end of the traditional series oil cylinder is provided with a rodless cavity, so that the operation is not synchronous can be solved, therefore, the two forks can synchronously operate and can reliably move to the side of the goods, on one hand, the forks can keep moving at a constant speed, thereby avoiding the collision of the goods caused by sudden acceleration or deceleration, on the other hand, because the forks operate stably, the distance between the two forks can be kept constant, and the problem that the goods fall or the distance between the forks is reduced and the clamping is unstable can be avoided;
4. the hydraulic control system can realize synchronous distance adjustment of the pallet fork distance under the no-load condition and integral lateral movement during loading, and can effectively improve the utilization rate of transportation and storage spaces such as warehouses and the like by being matched with a forklift for use; the two forks can move independently, the positioning is rapid, and the operation efficiency is improved;
5. the double-hydraulic oil cylinder structure in the prior art is limited by the stroke of the oil cylinder, and the range of distance adjustment and lateral movement is smaller, but the double-motor chain transmission structure adopts double-motor chain transmission, compared with the prior art, the double-hydraulic oil cylinder structure can effectively change the range of distance adjustment and lateral movement, and is suitable for carrying and stacking long materials.
The invention provides a distance adjusting and side shifting accessory realized by double motors, which can realize constant-speed stable stepless distance adjustment, has wider front side view, small front suspension distance, reliable side shifting of loaded goods, strong environmental adaptability and great popularization value.
Drawings
FIG. 1 is a schematic view of the left and right fork mounting structure of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1 according to the present invention;
FIG. 3 is a front view of the overall structure of the present invention;
FIG. 4 is a rear perspective view of the overall construction of the present invention;
FIG. 5 is a sectional view showing an installation structure of a hydraulic motor, a driving sprocket, and a driven sprocket according to the present invention;
FIG. 6 is a schematic exterior view of the tensioning mechanism of the present invention;
FIG. 7 is a schematic cross-sectional view of the tensioning mechanism of the present invention;
fig. 8 is a structural view of a hydraulic control system of the present invention.
In the figure: 1 fork frame, 21 left hydraulic motor, 22 right hydraulic motor, 3 driving chain wheel, 4 rotating shafts, 5 driven chain wheels, 6 transmission chain sets, 61 chain set pin shafts, 7 tensioning mechanisms, 71 adjusting sleeves, 72 left-handed adjusting screws, 721 left connecting holes, 73 right-handed adjusting screws, 731 right connecting holes, 732 locking nuts, 8 chain hanging plates, 81 connecting plates, 82 connecting shafts, 91 left fork, 92 right fork, 10 hydraulic control system, 101 pump station, 102 multiway valve, 103 two-way overflow valve, 104 solenoid valve I, 105 solenoid valve II, 106 solenoid valve III, 107 solenoid valve IV, 108 solenoid valve V, and 109 solenoid valve VI.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides a technical solution:
a distance adjustment and side shifting attachment realized by double motors comprises a fork frame 1, wherein a left hydraulic motor 21 and a right hydraulic motor 22 are respectively installed in motor installation holes formed in the upper left side and the lower right side of the fork frame 1, the distances from the motor installation holes of the left hydraulic motor 21 and the right hydraulic motor 22 to the center plane of the fork frame 1 are the same, so that the left hydraulic motor 21 and the right hydraulic motor 22 are ensured to be symmetrical, and driving sprockets 3 are respectively installed at the driving ends of the left hydraulic motor 21 and the right hydraulic motor 22.
The fork arm carrier 1 is provided with a rotating shaft 4 at the upper right side and the lower left side respectively through bearings, the rotating shaft 4 can rotate in situ, the distance from the center of the rotating shaft 4 to the central plane of the fork arm carrier 1 is the same, and driven sprockets 5 are respectively fixedly arranged on the rotating shaft 4.
The driving chain wheel 3 and the driven chain wheel 5 are provided with a transmission chain group 6, one end of a tensioning mechanism 7 is hinged in the transmission chain group 6, the other end of the tensioning mechanism 7 is hinged with a hanging chain plate 8, one end, far away from the tensioning mechanism 7, of the hanging chain plate 8 is fixed on the transmission chain group 6, the tensioning mechanism 7 and the hanging chain plate 8 form a closed loop, the tensioning mechanism 7 enables chain transmission of the transmission chain group 6 to be more stable, abrasion is reduced, and a left fork 91 and a right fork 92 are fixedly arranged on the hanging chain plate 8 respectively and used for forking and transferring goods.
The left hydraulic motor 21 and the right hydraulic motor 22 are driven by the hydraulic control system 10.
Preferably, the tensioning mechanism 7 comprises an adjusting sleeve 71, a left-handed adjusting screw 72 is threadedly arranged at one end of the adjusting sleeve 71, the left-handed adjusting screw 72 can rotate in the adjusting sleeve 71 to adjust the overall length of the tensioning mechanism 7, a left connecting hole 721 is formed in the left-handed adjusting screw 72, a chain group pin 61 of the transmission chain group 6 is arranged in the left connecting hole 721 in a penetrating manner, the right-handed adjusting screw 73 can also rotate in the adjusting sleeve 71 to adjust the overall length of the tensioning mechanism 7, a right connecting hole 731 is formed in the right-handed adjusting screw 73, a connecting plate 81 is hinged to the hanging chain plate 8, a connecting shaft 82 is fixedly arranged on the connecting plate 81, and the connecting shaft 82 is arranged in the right connecting hole 731 and used for achieving the hinging of the tensioning mechanism 7 and the hanging chain plate 8.
Preferably, the right-handed adjusting screw 73 is provided with a locking nut 732 in a threaded manner, and the locking nut 732 is closely attached to the adjusting sleeve 71 and used for fixing and limiting the right-handed adjusting screw 73.
Preferably, the hydraulic control system 10 includes a pump station 101, a multi-way valve 102, a two-way overflow valve 103, a first solenoid valve 104, a second solenoid valve 105, a third solenoid valve 106, a fourth solenoid valve 107, a fifth solenoid valve 108 and a sixth solenoid valve 109, wherein a port P and a port T of the multi-way valve 102 are respectively communicated with a port P0 and a port T0 of the pump station 101, and a port a and a port B of the multi-way valve 102 are respectively communicated with a port V1 and a port V2 of the two-way overflow valve 103;
the P1 port of the first electromagnetic valve 104 and the P2 port of the second electromagnetic valve 105 are communicated with the C1 port of the two-way overflow valve 103 in parallel, and the T1 port of the first electromagnetic valve 104 and the T2 port of the second electromagnetic valve 105 are communicated with the C2 port of the two-way overflow valve 103 in parallel;
the port A1 of the first electromagnetic valve 104 is communicated with the port V3 of the left hydraulic motor 21, and the port B1 of the first electromagnetic valve 104 is communicated with the port C3 of the left hydraulic motor 21;
the port A2 of the second electromagnetic valve 105 is communicated with the port C4 of the right hydraulic motor 22, and the port B2 of the second electromagnetic valve 105 is communicated with the port V4 of the right hydraulic motor 22;
the port M3 of the electromagnetic valve III 106 is communicated with the port C4 of the right hydraulic motor 22, and the port M4 of the electromagnetic valve III 106 is communicated with the port C3 of the left hydraulic motor 21;
the port M1 of the solenoid valve IV 107 is communicated with the port C4 of the right hydraulic motor 22, and the port M2 of the solenoid valve IV 107 is communicated with the port V3 of the left hydraulic motor 21;
the port M5 of the solenoid valve five 108 is communicated with the port V4 of the right hydraulic motor 22, and the port M6 of the solenoid valve five 108 is communicated with the port C3 of the left hydraulic motor 21;
the port M7 of the solenoid valve six 109 communicates with the port V4 of the right hydraulic motor 22, and the port M8 of the solenoid valve six 109 communicates with the port V3 of the left hydraulic motor 21.
Preferably, the multiway valve 102 is a manual three-position four-way valve, the first solenoid valve 104 and the second solenoid valve 105 are two-position four-way valves, and the third solenoid valve 106, the fourth solenoid valve 107, the fifth solenoid valve 108 and the sixth solenoid valve 109 are two-position two-way valves.
Preferably, the two-way relief valve 103 serves as a relief valve for protecting the left hydraulic motor 21 and the right hydraulic motor 22, and has functions of pressure stabilization, system unloading, and safety protection.
The first embodiment is as follows: when the left fork 91 needs to be moved independently, the first electromagnetic valve 104, the second electromagnetic valve 105, the fourth electromagnetic valve 107 and the fifth electromagnetic valve 108 are powered on, the third electromagnetic valve 106 and the sixth electromagnetic valve 109 are not powered on, the multi-way valve 102 acts to control hydraulic oil to flow into the left hydraulic motor 21, the left hydraulic motor 21 rotates to drive the driving chain wheel 3 at the corresponding position to rotate, so that the driving chain set 6 operates, the driven chain wheel 5 rotates along with the operation, and the driving chain set 6 drives the left fork 91 to move through the chain hanging plate 8.
Example two: when the right fork 92 needs to be moved independently, the first electromagnetic valve 104, the second electromagnetic valve 105, the third electromagnetic valve 106 and the sixth electromagnetic valve 109 are not powered, the fourth electromagnetic valve 107 and the fifth electromagnetic valve 108 are powered, the multi-way valve 102 acts to control hydraulic oil to flow into the right hydraulic motor 22, the right hydraulic motor 22 rotates to drive the driving sprocket 3 at the corresponding position to rotate, so that the driving chain set 6 operates, the driven sprocket 5 rotates along with the driving chain set 6, and the driving chain set 6 drives the right fork 92 to move through the chain hanging plate 8.
Example three: when the synchronous distance adjustment of the forks is needed, the first electromagnetic valve 104, the second electromagnetic valve 105, the third electromagnetic valve 106, the fourth electromagnetic valve 107, the fifth electromagnetic valve 108 and the sixth electromagnetic valve 109 are not powered, the multi-way valve 102 acts to control hydraulic oil to synchronously flow into the left hydraulic motor 21 and the right hydraulic motor 22, the left hydraulic motor 21 and the right hydraulic motor 22 synchronously rotate forwards and backwards, so that the two groups of driving sprockets 3 drive the transmission chain group 6 to synchronously rotate forwards and backwards, and the left fork 91 and the right fork 92 synchronously move forwards and backwards, and the synchronous distance adjustment is realized.
Example four: when the fork is required to synchronously move laterally, the first electromagnetic valve 104, the second electromagnetic valve 105, the third electromagnetic valve 106, the fourth electromagnetic valve 107 and the sixth electromagnetic valve 109 are electrified, and the five electromagnetic valves 108 are not electrified, the multi-way valve 102 acts to control the hydraulic oil to synchronously flow into the left hydraulic motor 21 and the right hydraulic motor 22, the left hydraulic motor 21 and the right hydraulic motor 22 synchronously rotate, so that the two groups of driving chain wheels 3 drive the transmission chain group 6 to synchronously rotate, so that the left fork 91 and the right fork 92 move synchronously to realize lateral movement, on one hand, the left fork 91 and the right fork 92 can keep moving at a constant speed so as to avoid collision of the inside of the goods caused by sudden acceleration or deceleration, on the other hand, because left fork 91 and right fork 92 operation are stable, the interval of left fork 91 and right fork 92 can remain unchanged, has just also avoided the interval grow between the fork to lead to the goods to fall or the interval diminishes the unstable problem of centre gripping.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A double motor enabled distance adjustment and side shifting accessory comprising a fork carriage (1), characterized in that: a left hydraulic motor (21) and a right hydraulic motor (22) are respectively installed in motor installation holes formed in the upper left part and the lower right part of the fork frame (1), the distances from the motor installation holes of the left hydraulic motor (21) and the right hydraulic motor (22) to the central plane of the fork frame (1) are the same, and driving sprockets (3) are respectively installed at the driving ends of the left hydraulic motor (21) and the right hydraulic motor (22);
the fork frame (1) is respectively provided with a rotating shaft (4) at the upper right part and the lower left part in a bearing mode, the distance from the center of the rotating shaft (4) to the central plane of the fork frame (1) is the same, and driven chain wheels (5) are respectively fixedly arranged on the rotating shaft (4);
a transmission chain group (6) is arranged on the driving chain wheel (3) and the driven chain wheel (5), one end of a tensioning mechanism (7) is hinged in the transmission chain group (6), the other end of the tensioning mechanism (7) is hinged with a hanging chain plate (8), one end, far away from the tensioning mechanism (7), of the hanging chain plate (8) is fixed on the transmission chain group (6), the tensioning mechanism (7) and the hanging chain plate (8) form a closed loop, and a left fork (91) and a right fork (92) are fixedly arranged on the hanging chain plate (8) respectively;
the left hydraulic motor (21) and the right hydraulic motor (22) are driven by a hydraulic control system (10).
2. The dual motor enabled pitch and side shift accessory of claim 1, wherein: straining device (7) is including adjusting sleeve (71), one end screw thread is provided with levogyration adjusting screw (72) in adjusting sleeve (71), levogyration adjusting screw (72) have been seted up left connecting hole (721), run through chain group round pin axle (61) that are provided with drive chain group (6) in left connecting hole (721) for realize the articulated of straining device (7) and drive chain group (6), another end screw thread is provided with dextrorotation adjusting screw (73) in adjusting sleeve (71), dextrorotation adjusting screw (73) have been seted up right connecting hole (731), it is provided with connecting plate (81) to articulate on link joint (8), fixed connecting axle (82) that is provided with on connecting plate (81), connecting axle (82) set up in right connecting hole (731), be used for realizing straining device (7) and hang the articulated of link joint (8).
3. A dual motor enabled pitch and side shift accessory as claimed in claim 2, wherein: the right-handed adjusting screw rod (73) is provided with a locking nut (732) in a threaded manner, and the locking nut (732) is tightly attached to the adjusting sleeve (71).
4. The dual motor enabled pitch and side shift accessory of claim 1, wherein: the hydraulic control system (10) comprises a pump station (101), a multi-way valve (102), a two-way overflow valve (103), a first electromagnetic valve (104), a second electromagnetic valve (105), a third electromagnetic valve (106), a fourth electromagnetic valve (107), a fifth electromagnetic valve (108) and a sixth electromagnetic valve (109), wherein a port P and a port T of the multi-way valve (102) are respectively communicated with a port P0 and a port T0 of the pump station (101), and a port A and a port B of the multi-way valve (102) are respectively communicated with a port V1 and a port V2 of the two-way overflow valve (103);
the P1 port of the first electromagnetic valve (104) and the P2 port of the second electromagnetic valve (105) are communicated with the C1 port of the two-way overflow valve (103) in parallel, and the T1 port of the first electromagnetic valve (104) and the T2 port of the second electromagnetic valve (105) are communicated with the C2 port of the two-way overflow valve (103) in parallel;
the port A1 of the first electromagnetic valve (104) is communicated with the port V3 of the left hydraulic motor (21), and the port B1 of the first electromagnetic valve (104) is communicated with the port C3 of the left hydraulic motor (21);
the port A2 of the second solenoid valve (105) is communicated with the port C4 of the right hydraulic motor (22), and the port B2 of the second solenoid valve (105) is communicated with the port V4 of the right hydraulic motor (22);
the port M3 of the solenoid valve III (106) is communicated with the port C4 of the right hydraulic motor (22), and the port M4 of the solenoid valve III (106) is communicated with the port C3 of the left hydraulic motor (21);
the port M1 of the solenoid valve IV (107) is communicated with the port C4 of the right hydraulic motor (22), and the port M2 of the solenoid valve IV (107) is communicated with the port V3 of the left hydraulic motor (21);
the port M5 of the solenoid valve five (108) is communicated with the port V4 of the right hydraulic motor (22), and the port M6 of the solenoid valve five (108) is communicated with the port C3 of the left hydraulic motor (21);
and the port M7 of the solenoid valve six (109) is communicated with the port V4 of the right hydraulic motor (22), and the port M8 of the solenoid valve six (109) is communicated with the port V3 of the left hydraulic motor (21).
5. The dual motor enabled pitch and side shift accessory of claim 4, wherein: the multi-way valve (102) is a manual three-position four-way valve, the first solenoid valve (104) and the second solenoid valve (105) are two-position four-way valves, and the third solenoid valve (106), the fourth solenoid valve (107), the fifth solenoid valve (108) and the sixth solenoid valve (109) are two-position two-way valves.
6. The dual motor enabled pitch and side shift accessory of claim 4, wherein: the two-way relief valve (103) serves as a safety valve for protecting the left hydraulic motor (21) and the right hydraulic motor (22).
CN202010136155.3A 2020-03-02 2020-03-02 Pitch-adjusting and side-shifting accessory realized by double motors Active CN111170230B (en)

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CN202010136155.3A CN111170230B (en) 2020-03-02 2020-03-02 Pitch-adjusting and side-shifting accessory realized by double motors

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Application Number Priority Date Filing Date Title
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CN111170230B CN111170230B (en) 2024-09-20

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105752890A (en) * 2016-05-05 2016-07-13 朱红蔚 Wide-range lateral-movement carriage mechanism for fork of forklift truck
CN106660768A (en) * 2014-05-14 2017-05-10 卡普有限两合公司 Add-on device to be attached to a lifting vehicle, and method for actuating said add-on device
CN107892253A (en) * 2017-11-27 2018-04-10 杭叉集团股份有限公司 Fork truck three-dimensional piler
JP2018082646A (en) * 2016-11-22 2018-05-31 三陽機器株式会社 Mobile carriage
CN211847039U (en) * 2020-03-02 2020-11-03 合肥搬易通科技发展有限公司 Distance-adjusting and side-moving accessory realized by double motors

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106660768A (en) * 2014-05-14 2017-05-10 卡普有限两合公司 Add-on device to be attached to a lifting vehicle, and method for actuating said add-on device
CN105752890A (en) * 2016-05-05 2016-07-13 朱红蔚 Wide-range lateral-movement carriage mechanism for fork of forklift truck
JP2018082646A (en) * 2016-11-22 2018-05-31 三陽機器株式会社 Mobile carriage
CN107892253A (en) * 2017-11-27 2018-04-10 杭叉集团股份有限公司 Fork truck three-dimensional piler
CN211847039U (en) * 2020-03-02 2020-11-03 合肥搬易通科技发展有限公司 Distance-adjusting and side-moving accessory realized by double motors

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