CN110803659A - Method and device for controlling tilting speed of forklift gantry - Google Patents
Method and device for controlling tilting speed of forklift gantry Download PDFInfo
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- CN110803659A CN110803659A CN201911005067.3A CN201911005067A CN110803659A CN 110803659 A CN110803659 A CN 110803659A CN 201911005067 A CN201911005067 A CN 201911005067A CN 110803659 A CN110803659 A CN 110803659A
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- forklift
- goods
- output signal
- speed
- operating handle
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Classifications
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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
- B66F9/16—Platforms; Forks; Other load supporting or gripping members inclinable relative to mast
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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
- B66F9/0755—Position control; Position detectors
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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
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
Abstract
The invention discloses a method and a device for controlling the tilting speed of a forklift gantry, wherein the method comprises the following steps: 1) acquiring weight information and lifting height information of the goods on the portal frame, judging whether the weight of the goods is greater than a first preset value or not and whether the lifting height of the goods is greater than a second preset value or not, if so, executing a step 2), and if not, executing a step 3); 2) setting the set range of the output signal of the forklift operation handle as A1; 3) setting the set range of the output signal of the forklift operation handle to be A2, wherein the maximum value of A2 is larger than the maximum value of A1; 4) and adjusting the inclination speed of the gantry according to the value of the actual output signal of the forklift operating handle. The invention can adjust the setting range of the output signal of the operating handle according to the weight of the goods and the lifting height, so that the inclination speed of the portal frame is lower when the portal frame is inclined at a heavy load and a high place, thereby avoiding the shaking, even tipping or falling of the goods caused by the overlarge inclination amplitude of the portal frame at the heavy load and the high place and ensuring safer operation.
Description
Technical Field
The invention relates to the technical field of inclination control of a forklift mast, in particular to a method and a device for controlling the inclination speed of the forklift mast.
Background
At present, in the forklift of the prior art, the rotation angular velocity ω of the mast is irrelevant to the weight and the lifting height of the goods, but the inclined linear velocity increases as the lifting height H of the mast to the goods increases, as shown in fig. 1, VH＝ω*H，VHFor the cargo's inclined linear velocity at H altitude, when the cargo is lifted from H altitude to H1 altitude, its inclined linear velocity VH1＝ω*H1＝VHH1/H, it is evident that the linear velocity V of the slope of the cargo at the height H1H1Is enlarged. Therefore, there are the following problems:
the higher the lifting of the portal frame is, the higher the inclination linear speed of the goods is, when the weight of the goods is larger and the lifting height of the portal frame is higher, if the forward and backward tilting operation amplitude is too large, the portal frame and the goods are easy to shake, so that the risk of tipping or falling is easy to occur, the property loss of the goods is brought, and the great personal safety hidden danger is brought to the working personnel;
the output signal of the forklift operation handle is not influenced by the height, the higher the lifting is, the lower the precision of the control of the inclined linear velocity is, because the same inclined linear velocity is reached, the higher the portal is, the smaller the opening degree of the operation handle is, and therefore, the more precise the operation of the operation handle by a worker is, and the working pressure of the worker is increased.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides a forklift gantry inclination speed control method and device capable of adjusting gantry inclination speed according to cargo weight and lifting height.
The technical scheme adopted by the invention for solving the technical problems is as follows: a forklift mast inclination speed control method comprises the following steps:
1) acquiring weight information and lifting height information of the goods on the portal frame, judging whether the weight of the goods is greater than a first preset value or not and whether the lifting height of the goods is greater than a second preset value or not, if so, executing a step 2), and if not, executing a step 3);
2) setting the set range of the output signal of the forklift operation handle as A1;
3) setting the set range of the output signal of the forklift operation handle to be A2, wherein the maximum value of A2 is larger than the maximum value of A1;
4) and adjusting the inclination speed of the gantry according to the value of the actual output signal of the forklift operating handle.
Further, the step 2) further comprises: setting the rotation speed of a pump motor of the forklift as n 1; the step 3) further comprises the following steps: setting the rotation speed of a pump motor of the forklift to be n2, wherein n2 is larger than n 1; and/or, further comprising the steps of:
and when the multi-way valve of the forklift is an electric control valve, the opening degree of the valve core of the multi-way valve is adjusted according to the output signal of the operating handle.
Further, a position sensor is adopted to acquire the lifting height of the goods on the door frame; installing a pressure sensor at the bottom of a multi-way valve or a lifting oil cylinder of the forklift, reading lifting pressure P of a lifting oil way of the forklift through the pressure sensor, wherein the lifting pressure P forms the weight information; combining the radius R of the lifting oil cylinder to convert the weight G of the goods forked by the portal frame, wherein G is k pi R2P, where k is a correction factor.
Further, the step 1) is preceded by the following steps: pressing an activation button to start the adjusting function of the output signal setting range of the forklift operation handle and/or the rotating speed of the pump motor; and/or, the step 4) is followed by the following steps: pressing an activation button to close the adjusting function of the output signal setting range of the forklift operation handle; when the adjusting function of the output signal setting range of the forklift operating handle and/or the rotating speed of the pump motor is started, the indicating module sends out an indicating signal.
Furthermore, the operating handle is an electric control handle or a mechanical handle with a position sensor, and the output signal is a current signal or a voltage signal.
The invention also provides a device for controlling the tilting speed of the forklift mast, which comprises a mast tilter, an operating handle and a controller of the forklift; further comprising:
the first sensor is used for acquiring the lifting height information of the goods on the door frame;
the second sensor is used for acquiring weight information of goods on the portal;
the output of the first sensor and the output of the second sensor are both connected to the controller, the controller judges whether the weight of the goods on the door frame is larger than a first preset value or not and whether the lifting height of the goods on the door frame is larger than a second preset value or not according to the information collected by the first sensor and the second sensor, if so, the set range of the output signal of the forklift operating handle is set as A1, otherwise, the set range of the output signal of the forklift operating handle is set as A2, and the maximum value of A2 is larger than the maximum value of A1; the controller adjusts the tilting speed of the gantry tilter according to the value of the actual output signal of the operating handle.
The forklift further comprises a pump motor of the forklift, the pump motor is connected with the controller, when the weight of the goods on the gantry is larger than a first preset value and the lifting height of the goods on the gantry is larger than a second preset value, the rotating speed of the pump motor is set to be n1, the weight of the goods on the gantry is not larger than the first preset value, and/or when the lifting height of the goods on the gantry is not larger than the second preset value, the rotating speed of the pump motor is set to be n2, and n2 is larger than n 1.
Further, the first sensor is a position sensor; the second sensor is a pressure sensor which is arranged at the bottom of a multi-way valve or a lifting oil cylinder of the forklift, and the lifting pressure P of a lifting oil way of the forklift is read through the pressure sensor and forms the weight information; the controller is combined with the radius R of the lifting oil cylinder to convert the weight G of the goods forked by the portal frame, wherein the G is k and pi R2P, where k is a correction factor.
The device further comprises an activation button which is electrically connected with the controller and is used for starting or closing the adjusting function of the controller on the output signal setting range of the operating handle and/or the rotating speed of the pump motor; the device also comprises an indicating module which is electrically connected with the controller and is used for indicating whether the controller is started or not for the output signal setting range of the operating handle and/or the adjusting function of the rotating speed of the pump motor.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can adjust the setting range of the output signal of the operating handle according to the weight of the goods and the lifting height, thereby adjusting the tilting speed of the portal frame, ensuring that the tilting speed (finger line speed) of the portal frame is smaller when the portal frame tilts at a heavy load and a high place, and the portal frame is not influenced under other working conditions, thereby avoiding the shaking, even tipping or falling of the goods caused by the overlarge tilting amplitude of the portal frame at the heavy load and the high place, ensuring that the operation is safer, and not influencing the working efficiency under other working conditions (such as tilting at a heavy load and a low place). In addition, the invention enables the staff to normally operate the operating handle, namely the inclination speed of the gantry can be reduced when the gantry is under the working conditions of heavy load and high inclination, and the inclination speed can be more finely adjusted in the same stroke of the operating handle, thereby reducing the working pressure of the staff.
2. The invention can adjust the rotating speed of the pump motor of the forklift according to the weight of goods and the lifting height, so that the rotating speed of the pump motor of the forklift is reduced when the gantry is under heavy load and at a high position, thereby reducing hydraulic overflow and reducing energy consumption (in the prior art, the rotating speed of the pump motor of the forklift cannot be correspondingly reduced according to the load and the height, so that the energy loss is large when the forklift is inclined at the high position under heavy load, and the invention is not environment-friendly).
3. The arrangement of the activation button enables a worker to freely select activation and deactivation of the adjustment function of the operation handle and/or the pump motor to adapt to different working conditions. The setting of indication module makes the staff can in time master the state that operating handle and/or pump motor were located to avoid the maloperation.
4. The position sensor and the pressure sensor are adopted to detect corresponding information, and the device has the characteristics of simplicity and convenience in installation, rapidness and accuracy in data acquisition and the like.
The invention is further explained in detail with the accompanying drawings and the embodiments; however, the method and the device for controlling the tilting speed of the forklift mast are not limited to the embodiment.
Drawings
FIG. 1 is a schematic diagram of the relationship between linear speed of gantry tilt and the angular speed of gantry tilt and gantry lift height;
FIG. 2 is a schematic flow diagram of the process of the present invention;
fig. 3 is a schematic block diagram of the tilt speed control apparatus of the forklift mast of the present invention.
Detailed Description
In an embodiment, please refer to fig. 2, the method for controlling the tilting speed of the forklift mast according to the present invention, wherein the tilting speed and the following tilting speeds are linear speeds, and the method comprises the following steps:
1) acquiring weight information and lifting height information of the goods on the portal frame, judging whether the weight of the goods is greater than a first preset value or not and whether the lifting height of the goods is greater than a second preset value or not, if so, executing a step 2), and if not, executing a step 3);
2) setting the set range of the output signal of the forklift operation handle as A1;
3) setting the set range of the output signal of the forklift operation handle to be A2, wherein the maximum value of A2 is larger than the maximum value of A1;
4) and adjusting the inclination speed of the gantry according to the value of the actual output signal of the forklift operating handle.
In this embodiment, the step 2) further includes: setting the rotation speed of a pump motor of the forklift as n 1; the step 3) further comprises the following steps: the rotation speed of the pump motor of the forklift is set to be n2, and n2 is larger than n 1. In other embodiments, the invention further comprises the steps of: and when the multi-way valve of the forklift is an electric control valve, the opening degree of the valve core of the multi-way valve is adjusted according to the output signal of the operating handle.
In the embodiment, in the step 1), a position sensor is adopted to acquire the lifting height of the goods on the gantry; a pressure sensor is arranged at the bottom of a multi-way valve or a lifting oil cylinder of the forklift, the lifting pressure P of a lifting oil way of the forklift is read through the pressure sensor, and the lifting pressure P is formedThe weight information; combining the radius R of the lifting oil cylinder to convert the weight G of the goods forked by the portal frame, wherein G is k pi R2P, where k is a correction factor.
In this embodiment, before the step 1), the following steps are further included: and pressing an activation button to start the adjusting functions of the output signal setting range of the forklift operation handle and the rotating speed of the pump motor. In addition, the step 4) may be followed by the following steps: and pressing an activation button to close the adjusting function of the output signal setting range of the forklift operation handle. When the adjusting function of the output signal setting range of the forklift operating handle and the rotating speed of the pump motor is started, the indicating module sends out an indicating signal.
In this embodiment, the operating handle is specifically an electric control handle, but is not limited thereto, and in other embodiments, the operating handle is a mechanical handle with a position sensor. The output signal is a current signal or a voltage signal and is a signal corresponding to the inclination speed of the gantry, namely the change of the output signal can cause the change of the inclination speed of the gantry, and the larger the value of the output signal is, the larger the inclination speed of the gantry is, the smaller the value of the output signal is, the smaller the inclination speed of the gantry is, and the prior art is adopted, so that the relationship between the current signal and the voltage signal is not further explained.
The invention discloses a method for controlling the tilting speed of a forklift mast, which has the overall method flow as shown in figure 1 and comprises the following steps:
s1, pressing an activation button, and starting the adjusting functions of the output signal setting range of the forklift operation handle and the rotating speed of the pump motor;
s2, collecting weight information and lifting height information of goods on the gantry;
s3, judging whether the weight of the goods is larger than a first preset value or not and whether the lifting height of the goods is larger than a second preset value or not, if so, executing a step S4, otherwise, executing a step S5;
s4, setting the set range of the output signal of the forklift operation handle to be A1, and setting the rotating speed of the pump motor to be n 1;
and S5, setting the set range of the output signal of the forklift operation handle as A2, and setting the rotating speed of the pump motor as n2, wherein the maximum value of A2 is larger than the maximum value of A1, and n2 is larger than n 1.
And S6, adjusting the tilting speed of the door frame according to the value of the actual output signal of the forklift operation handle.
According to the method for controlling the tilting speed of the forklift mast, when the mast is under the working conditions of heavy load and high altitude, the set range of the output signal of the operating handle is smaller than that of other working conditions (such as no-load high-altitude working condition, heavy-load low-altitude working condition and the like), so that when a worker normally operates the operating handle, for example, the operating handle is still pulled to the position where the mast is positioned under the working conditions of heavy load and high altitude, obviously, the value of the actual output signal of the operating handle is reduced, and therefore, the tilting speed of the mast is correspondingly reduced, so that the situation that goods shake, even overturn or fall due to overlarge tilting amplitude of the mast under the heavy load and high altitude is avoided, and the operation is safer. Under other operating modes, the output signal of operating handle's settlement scope is great, therefore, when the staff normally operated operating handle, operating handle actual output signal's value has become big, therefore, the tilting speed of portal has also correspondingly become big, from the work efficiency that does not influence under other operating modes.
According to the invention, the inclination speed of the gantry can be reduced when the gantry is under heavy load and high inclination working conditions by normal operation of the operating handle by a worker, so that the worker is prevented from adopting different or greatly-different operations on the operating handle aiming at different working conditions, namely, the worker can move the operating handle to the same or approximately the same position for different working conditions of the gantry, thereby reducing the working pressure of the worker.
Referring to fig. 3, the device for controlling the tilting speed of the forklift mast according to the present invention comprises a mast tilter 1, an operating handle 2 and a controller 3 of the forklift mast, wherein the mast tilter 1 is an actuator for controlling the tilting of the mast, and may be a tilting cylinder or the like. The invention also includes:
the first sensor is used for acquiring the lifting height information of the goods on the door frame;
the second sensor is used for acquiring weight information of goods on the portal;
the outputs of the first sensor and the second sensor are both connected to the controller 3, the controller 3 judges whether the weight of the goods on the door frame is larger than a first preset value and the lifting height of the goods on the door frame is larger than a second preset value according to the information collected by the first sensor and the second sensor, if so, the set range of the output signal of the forklift operating handle 2 is set as A1, otherwise, the set range of the output signal of the forklift operating handle 2 is set as A2, and the maximum value of A2 is larger than the maximum value of A1; the controller 3 adjusts the tilting speed of the mast tilter 1 according to the value of the actual output signal of the operating handle 2.
In this embodiment, the first sensor is a position sensor 4, which is mounted on the gantry; the second sensor is a pressure sensor 5, the pressure sensor 5 is arranged at the bottom of a multi-way valve or a lifting oil cylinder of the forklift, the lifting pressure P of a lifting oil way of the forklift is read through the pressure sensor 5, and the lifting pressure P forms the weight information; the controller 3 is combined with the radius R of the lifting oil cylinder to convert the weight G of the goods forked by the portal frame, wherein G is k pi R2P, where k is a correction factor.
In this embodiment, the present invention further includes a pump motor 6 of the forklift, the pump motor 6 is connected to the controller 3, and the controller 3 sets the rotation speed of the pump motor 6 to n1 when the weight of the cargo on the gantry is greater than a first preset value and the lifting height of the cargo on the gantry is greater than a second preset value, and sets the rotation speed of the pump motor 6 to n2 and n2 to be greater than n1 when the weight of the cargo on the gantry is not greater than the first preset value and/or the lifting height of the cargo on the gantry is not greater than the second preset value, for example, n2 is n and n1 is 0.7n, where n is a positive number.
In this embodiment, the present invention further includes an activation button 7, where the activation button 7 may be disposed on an operation panel of a forklift cab, and the activation button 7 is electrically connected to the controller 3, and is configured to turn on or off a function of adjusting a setting range of an output signal of the operation handle 2 and a rotation speed of the pump motor 6 by the controller 3. The invention also comprises an indicating module 8, wherein the indicating module 8 is electrically connected with the controller 3 and is used for indicating whether the adjusting function of the controller 3 on the output signal setting range of the operating handle 2 and the rotating speed of the pump motor 6 is started or not. The indicating module 8 can be any one or more of an indicating lamp, a loudspeaker and a display screen.
In this embodiment, the operating handle 2 is specifically an electric control handle, but is not limited thereto, and in other embodiments, the operating handle is a mechanical handle with a position sensor. The output signal is a current signal or a voltage signal and is a signal corresponding to the inclination speed of the gantry, namely the change of the output signal can cause the change of the inclination speed of the gantry, and the larger the value of the output signal is, the larger the inclination speed of the gantry is, the smaller the value of the output signal is, and the smaller the inclination speed of the gantry is.
When the forklift mast inclination speed control device works, the activation button 7 is pressed down first, and the adjusting functions of the controller 3 for the output signal setting range of the forklift operating handle 2 and the rotating speed of the pump motor 6 are started. Then, the weight information and the lifting height information of the goods on the gantry are respectively collected through the pressure sensor 5 and the position sensor 4, the collected information is sent to the controller 3, and the controller 3 sends the weight information and the lifting height information to the gantry according to a formula G ═ k ═ pi R2And converting the weight of the goods lifted by the portal frame by P, judging whether the weight of the goods is greater than a first preset value or not, and judging whether the lifting height of the goods is greater than a second preset value or not, if so, setting the set range of the output signal of the forklift operating handle 2 to be A1 by the controller 3, and setting the rotating speed of the pump motor 6 to be n1, otherwise, setting the set range of the output signal of the forklift operating handle 2 to be A2 by the controller 3, and setting the rotating speed of the pump motor 6 to be n2, wherein the maximum value of A2 is greater than the maximum value of A1, and n2 is greater than n 1. Finally, the controller 3 adjusts the tilting speed of the mast recliner 1 according to the value of the actual output signal of the operating handle 2, thereby adjusting the tilting speed of the mast. The value of the actual output signal of the operating handle 2 is generated by the operator manipulating the operating handle 2.
The invention relates to a forklift mast inclination speed control device, which adjusts the set range of an output signal of an operating handle 2 according to the weight of goods and the lifting height, and the actual output signal value of the operating handle 2 is smaller than that of the prior art when the mast is under the working conditions of heavy load and high altitude, so that the inclination speed (finger line speed) of the mast is smaller when the mast is inclined under the heavy load and high altitude, and the mast is not influenced under other working conditions, thereby avoiding the shaking, even tipping or falling of the goods caused by the overlarge inclination amplitude of the mast under the heavy load and high altitude, ensuring safer operation and not influencing the working efficiency under other working conditions. In addition, the invention enables the staff to normally operate the operating handle 2, namely the inclination speed of the gantry can be reduced when the gantry is under the working conditions of heavy load and high inclination, and the inclination speed can be more finely adjusted in the same stroke of the operating handle, thereby reducing the working pressure of the staff.
The invention can also adjust the rotating speed of the pump motor 6 of the forklift according to the weight of the goods and the lifting height, so that the rotating speed of the pump motor 6 of the forklift is reduced when the gantry is under heavy load and at a high position, thereby solving the problems that in the prior art, the rotating speed of the pump motor of the forklift cannot be correspondingly reduced according to the size of the load and the height, so that the energy loss is large when the forklift inclines at the high position with heavy load, and the environment is not protected.
The above embodiments are only used to further illustrate the method and apparatus for controlling the tilting speed of the forklift mast according to the present invention, but the present invention is not limited to the embodiments, and any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention fall within the scope of the technical solution of the present invention.
Claims (10)
1. A method for controlling the tilting speed of a forklift gantry is characterized by comprising the following steps: the method comprises the following steps:
1) acquiring weight information and lifting height information of the goods on the portal frame, judging whether the weight of the goods is greater than a first preset value or not and whether the lifting height of the goods is greater than a second preset value or not, if so, executing a step 2), and if not, executing a step 3);
2) setting the set range of the output signal of the forklift operation handle as A1;
3) setting the set range of the output signal of the forklift operation handle to be A2, wherein the maximum value of A2 is larger than the maximum value of A1;
4) and adjusting the inclination speed of the gantry according to the value of the actual output signal of the forklift operating handle.
2. The method of controlling the tilt speed of a forklift mast according to claim 1, wherein: the step 2) further comprises the following steps: setting the rotation speed of a pump motor of the forklift as n 1; the step 3) further comprises the following steps: setting the rotation speed of a pump motor of the forklift to be n2, wherein n2 is larger than n 1; and/or, further comprising the steps of:
and when the multi-way valve of the forklift is an electric control valve, the opening degree of the valve core of the multi-way valve is adjusted according to the output signal of the operating handle.
3. The method of controlling the tilt speed of a forklift mast according to claim 1, wherein: acquiring the lifting height of the goods on the portal frame by adopting a position sensor; installing a pressure sensor at the bottom of a multi-way valve or a lifting oil cylinder of the forklift, reading lifting pressure P of a lifting oil way of the forklift through the pressure sensor, wherein the lifting pressure P forms the weight information; combining the radius R of the lifting oil cylinder to convert the weight G of the goods forked by the portal frame, wherein G is k pi R2P, where k is a correction factor.
4. The method of controlling the tilt speed of a forklift mast according to claim 2, wherein: the step 1) is also preceded by the following steps: pressing an activation button to start the adjusting function of the output signal setting range of the forklift operation handle and/or the rotating speed of the pump motor; and/or, the step 4) is followed by the following steps: pressing an activation button to close the adjusting function of the output signal setting range of the forklift operation handle; when the adjusting function of the output signal setting range of the forklift operating handle and/or the rotating speed of the pump motor is started, the indicating module sends out an indicating signal.
5. The method of controlling the tilt speed of a forklift mast according to claim 1, wherein: the operating handle is an electric control handle or a mechanical handle with a position sensor, and the output signal is a current signal or a voltage signal.
6. A forklift mast inclination speed control device comprises a forklift mast inclinator, an operating handle and a controller; the method is characterized in that: further comprising:
the first sensor is used for acquiring the lifting height information of the goods on the door frame;
the second sensor is used for acquiring weight information of goods on the portal;
the controller judges whether the weight of the goods on the door frame is larger than a first preset value and the lifting height of the goods on the door frame is larger than a second preset value according to the information collected by the first sensor and the second sensor, if so, the set range of the output signal of the operating handle is set as A1, otherwise, the set range of the output signal of the operating handle is set as A2, and the maximum value of A2 is larger than the maximum value of A1; the controller adjusts the tilting speed of the gantry tilter according to the value of the actual output signal of the operating handle.
7. The forklift mast tilt speed control device of claim 6, wherein: the forklift truck further comprises a pump motor of the forklift truck, the pump motor is connected with the controller, when the weight of the goods on the gantry is larger than a first preset value and the lifting height of the goods on the gantry is larger than a second preset value, the rotating speed of the pump motor is set to be n1, the weight of the goods on the gantry is not larger than the first preset value, and/or when the lifting height of the goods on the gantry is not larger than the second preset value, the rotating speed of the pump motor is set to be n2, and n2 is larger than n 1.
8. The forklift mast tilt speed control device of claim 6, wherein: the first sensor is a position sensor; the second sensor is a pressure sensor which is arranged at the bottom of a multi-way valve or a lifting oil cylinder of the forklift, and the lifting pressure P of a lifting oil way of the forklift is read through the pressure sensor and forms the weight information; the controller is combined with the radius R of the lifting oil cylinder to convert the weight G of the goods forked by the portal frame, wherein the G is k and pi R2P, where k is a correction factor.
9. The forklift mast tilt speed control device of claim 7, wherein: the device also comprises an activation button which is electrically connected with the controller and is used for starting or closing the adjusting function of the controller on the output signal setting range of the operating handle and/or the rotating speed of the pump motor; the device also comprises an indicating module which is electrically connected with the controller and is used for indicating whether the controller is started or not for the output signal setting range of the operating handle and/or the adjusting function of the rotating speed of the pump motor.
10. The forklift mast tilt speed control device of claim 6, wherein: the operating handle is an electric control handle or a mechanical handle with a position sensor, and the output signal is a current signal or a voltage signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911005067.3A CN110803659A (en) | 2019-10-22 | 2019-10-22 | Method and device for controlling tilting speed of forklift gantry |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911005067.3A CN110803659A (en) | 2019-10-22 | 2019-10-22 | Method and device for controlling tilting speed of forklift gantry |
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| CN110803659A true CN110803659A (en) | 2020-02-18 |
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| CN201911005067.3A Pending CN110803659A (en) | 2019-10-22 | 2019-10-22 | Method and device for controlling tilting speed of forklift gantry |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112856774A (en) * | 2021-02-01 | 2021-05-28 | 青岛海尔空调器有限总公司 | Method and device for controlling air conditioner guide plate and air conditioner |
| CN113200482A (en) * | 2021-05-08 | 2021-08-03 | 杭叉集团股份有限公司 | Forklift auxiliary loading and unloading control method and system |
| CN114105035A (en) * | 2021-12-31 | 2022-03-01 | 湖南雅居乐家居有限公司 | Intelligent lifting system and method |
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| JPH05229792A (en) * | 1992-02-18 | 1993-09-07 | Toyota Autom Loom Works Ltd | Hydraulic controller for tilt cylinder in forklift |
| JPH0761792A (en) * | 1993-08-27 | 1995-03-07 | Mitsubishi Heavy Ind Ltd | Tilt control device for forklift |
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| CN203095540U (en) * | 2013-02-03 | 2013-07-31 | 浙江尤恩叉车股份有限公司 | Scissor forklift portal-frame inclinator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112856774A (en) * | 2021-02-01 | 2021-05-28 | 青岛海尔空调器有限总公司 | Method and device for controlling air conditioner guide plate and air conditioner |
| CN113200482A (en) * | 2021-05-08 | 2021-08-03 | 杭叉集团股份有限公司 | Forklift auxiliary loading and unloading control method and system |
| CN114105035A (en) * | 2021-12-31 | 2022-03-01 | 湖南雅居乐家居有限公司 | Intelligent lifting system and method |
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Application publication date: 20200218 |
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