Forklift speed limiting device and forklift

Abstract

The utility model provides a forklift speed limiting device and a forklift. The forklift speed limiting device comprises a rotating speed sensor, a driving assembly and a throttle valve controller; the rotating speed sensor is arranged on an engine crankshaft of the forklift and used for measuring the first speed of the forklift. The driving assembly comprises a driving motor and a throttle valve control screw rod, the throttle valve control screw rod is connected with a throttle valve of the forklift, and the output end of the driving motor is connected with the throttle valve control screw rod and used for driving the throttle valve control screw rod to do telescopic motion; the throttle valve controller is electrically connected with the rotating speed sensor and the driving motor and used for controlling the driving motor to adjust the opening degree of the throttle valve when the first vehicle speed is larger than the preset speed so as to limit the speed of the forklift. By means of the method, potential safety hazards caused by overspeed of the forklift can be eliminated, and safe operation of the forklift is effectively guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of forklift safety assistance, and in particular to a forklift speed limiting device and a forklift. Background Art

[0002] In the aluminum electrolysis industry, in-plant motor vehicles are an important part of material transportation, and speeding directly affects the safety of production operations. In particular, drivers are prone to speeding when driving forklifts on a daily basis, which not only affects the normal operation and safety of the forklift, but also easily causes personal injury.

[0003] At present, although measures such as painting warning colors on the rims of forklifts have been taken to facilitate supervision and management, the phenomenon of speeding forklifts has not been completely eliminated. Utility Model Content

[0004] The present application provides a forklift speed limiting device and a forklift, which can eliminate the potential safety hazards caused by forklift speeding and effectively ensure the safe operation of the forklift.

[0005] In a first aspect, the present application provides a forklift speed limiting device, comprising:

[0006] A rotation speed sensor, disposed on a crankshaft of an engine of the forklift, for measuring a first vehicle speed of the forklift;

[0007] A drive assembly, comprising a drive motor and a throttle control screw, wherein the throttle control screw is connected to the throttle of the forklift, and an output end of the drive motor is connected to the throttle control screw for driving the throttle control screw to telescope; and

[0008] A throttle controller is electrically connected to the rotation speed sensor and the drive motor, and is used to control the drive motor to adjust the opening of the throttle to limit the speed of the forklift when the first vehicle speed is greater than a preset speed.

[0009] In the solution provided by the embodiment of the present application, the driving motor is connected to the throttle control screw, which can drive the throttle control screw to rotate and adjust the throttle opening. When the first speed of the forklift measured by the speed sensor is greater than the preset speed, the throttle controller can control the driving motor to reduce the throttle opening, thereby controlling the output of fuel to achieve the purpose of limiting the speed of the forklift. It can be seen that the solution of the present application can realize automatic forced speed limit for the forklift, eliminate the safety hazards caused by the forklift overspeeding, and effectively ensure the safe operation of the forklift.

[0010] In combination with the first aspect, in some possible implementations, the present invention further includes:

[0011] A position sensor, disposed near the throttle of the forklift, for detecting the opening of the throttle;

[0012] The throttle controller is electrically connected to the position sensor, and is used to control the drive motor according to the first vehicle speed and the opening of the throttle.

[0013] In combination with the first aspect and the above implementations, in some possible implementations, the present invention further includes:

[0014] A positioning module, disposed on the body of the forklift, for collecting the moving distance of the forklift and determining the second vehicle speed of the forklift according to the moving distance per unit time;

[0015] A control module is electrically connected to the speed sensor, the positioning module and the throttle controller, and is used to control the opening of the throttle through the throttle controller when the difference between the first vehicle speed and the second vehicle speed is less than a preset error value and the first vehicle speed and the second vehicle speed are both greater than a preset speed.

[0016] In combination with the first aspect and the above implementations, in some possible implementations, the present invention further includes:

[0017] An alarm device is arranged on the body of the forklift;

[0018] The control module is electrically connected to the alarm, and is used to control the alarm to sound an alarm when the difference between the first vehicle speed and the second vehicle speed is less than a preset error value and the first vehicle speed and the second vehicle speed are both greater than a preset speed.

[0019] In combination with the first aspect and the above implementations, in some possible implementations, the present invention further includes:

[0020] A display screen is arranged on the body of the forklift, and the display screen is electrically connected to the control module and is used for displaying the speed of the forklift in real time.

[0021] In combination with the first aspect and the above implementation manner, in some possible implementation manners, the display screen includes:

[0022] A supervisory display screen and a self-checking display screen are both electrically connected to the control module, the supervisory display screen is arranged on the top of the forklift body, and the self-checking display screen is arranged beside the main instrument panel of the forklift cab;

[0023] Wherein, the size of the supervision display screen is larger than the size of the self-check display screen.

[0024] In combination with the first aspect and the above implementations, in some possible implementations, the speed sensor uses a Hall sensor or a photoelectric encoder, and / or

[0025] The display screen adopts an LED display screen or a liquid crystal display screen.

[0026] In combination with the first aspect and the above implementations, in some possible implementations, the position sensor uses a laser ranging sensor.

[0027] In combination with the first aspect and the above implementations, in some possible implementations, the alarm is an acoustic alarm and / or a light alarm.

[0028] In a second aspect, the present application further provides a forklift, comprising:

[0029] A forklift speed limiting device as described in any one of the first aspects above. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the embodiments below. The accompanying drawings are only for the purpose of illustrating the embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0031] Figure 1 It is a structural schematic diagram of a forklift speed limiting device provided in an embodiment of the present application.

[0032] The description of the reference numerals in the figures is as follows:

[0033] 0—throttle;

[0034] 1—Speed ​​sensor;

[0035] 2—driving assembly; 21—driving motor; 22—throttle control screw;

[0036] 3—Throttle controller;

[0037] 4—Position sensor. DETAILED DESCRIPTION

[0038] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0039] In the aluminum electrolysis industry, in-plant motor vehicles are an important part of material transportation, and speeding directly affects the safety of production operations. In particular, drivers are prone to speeding when driving forklifts on a daily basis, which not only affects the normal operation and safety of the forklift, but also easily causes personal injury.

[0040] At present, although measures such as painting warning colors on the rims of forklifts have been taken to facilitate supervision and management, the phenomenon of speeding forklifts has not been completely eliminated.

[0041] In order to solve the above technical problems, the embodiment of the present application provides a forklift speed limiting device and a forklift. Referring to the accompanying drawings of the specification, a forklift speed limiting device provided by the embodiment of the present application is first introduced in detail.

[0042] First, please refer to Figure 1 In the first aspect of the present application, a forklift speed limiting device is proposed, which includes a speed sensor 1, a drive assembly 2 and a throttle controller 3. The speed sensor 1 is arranged on the engine crankshaft of the forklift, and is used to measure the first vehicle speed of the forklift; the drive assembly 2 includes a drive motor 21 and a throttle control screw 22, the throttle control screw 22 is connected to the throttle 0 of the forklift, and the output end of the drive motor 21 is connected to the throttle control screw 22, and is used to drive the throttle control screw 22 to extend and retract; the throttle controller 3 is electrically connected to the speed sensor 1 and the drive motor 21, and is used to control the drive motor 21 to adjust the opening of the throttle 0 when the first vehicle speed is greater than the preset speed, so as to limit the speed of the forklift.

[0043] In the solution provided by the embodiment of the present application, the driving motor 21 is connected to the throttle control screw 22, which can drive the throttle control screw 22 to rotate and adjust the opening of the throttle 0. When the first speed of the forklift measured by the speed sensor 1 is greater than the preset speed, the throttle controller 3 can control the driving motor 21 to reduce the opening of the throttle 0, thereby controlling the output of fuel to achieve the purpose of limiting the speed of the forklift. It can be seen that the solution of the present application can realize automatic forced speed limit of the forklift, eliminate the safety hazards caused by the forklift overspeeding, and effectively ensure the safe operation of the forklift.

[0044] The following combination Figure 1 The specific structure of the forklift speed limiting device is introduced in detail.

[0045] The speed sensor 1 can adopt a variety of sensors such as magnetoelectric, capacitive, and variable reluctance. For example, the speed sensor 1 can adopt a Hall sensor or a photoelectric encoder, wherein the Hall sensor includes a permanent magnet and a Hall element. When the magnetic pole on the engine crankshaft passes through the sensor, the Hall element can detect the change in the magnetic field and generate a corresponding voltage change. The voltage change is proportional to the speed of the engine crankshaft, so the first vehicle speed can be obtained by measuring the voltage change. The photoelectric encoder can use a photoelectric converter to convert the position of an object into a digital signal and output it. Designers can flexibly select a suitable speed sensor according to actual needs, and the embodiments of the present application do not make specific restrictions on this. The speed sensor 1 is set on the engine crankshaft of the forklift, and can accurately measure the first vehicle speed of the forklift in real time.

[0046] See also Figure 1The driving assembly 2 includes a driving motor 21 and a throttle control screw 22. The throttle control screw 22 is connected to the throttle 0 of the forklift. The output end of the driving motor 21 is connected to the throttle control screw 22, which can drive the throttle control screw 22 to move telescopically to increase or decrease the opening of the throttle 0. When the driving motor 21 adopts a stepping motor, a higher adjustment accuracy can be obtained.

[0047] The throttle controller 3 can be integrated in the vehicle body controller or a separate module can be used. The throttle controller 3 can control the drive motor 21 according to whether the first vehicle speed is greater than the preset speed, and then adjust the opening of the throttle 0 to achieve automatic mandatory speed limit for the forklift. Among them, the preset speed can be obtained according to actual tests and corresponding regulations. For example, the preset speed can be 20km / h, 10km / h, 5km / h, etc., and this application does not make specific restrictions on this.

[0048] In order to reduce the influence of external interference and improve the stability of the forklift speed limit, in some embodiments of the present application, the forklift speed limit device may also include a position sensor 4, which is arranged near the throttle 0 of the forklift and is used to detect the opening of the throttle 0. There are many types of position sensors 4, for example, a laser rangefinder sensor can be used. The laser rangefinder uses a laser beam to measure the distance, and can accurately determine the position of the throttle 0 by measuring the time or intensity of the reflected laser beam. The throttle controller 3 is electrically connected to the position sensor 4, and is used to control the drive motor 21 according to the first vehicle speed and the opening of the throttle 0. The position sensor 4 sends the detected opening information of the throttle 0 to the throttle controller 3, and the throttle controller 3 can flexibly choose to continue to open or close the opening of the throttle 0 according to the opening size of the throttle 0, so as to achieve accurate control of the throttle 0.

[0049] In order to further improve the working accuracy and reliability of the forklift speed limiting device, in some embodiments of the present application, the forklift speed limiting device may also include a positioning module and a control module. Specifically, the positioning module is arranged on the forklift body, and is used to collect the moving distance of the forklift and determine the second speed of the forklift according to the moving distance per unit time; the control module is electrically connected to the speed sensor 1, the positioning module and the throttle controller 3. In this way, the control module can obtain the first speed collected by the speed sensor 1 and the second speed collected by the positioning module, and when the difference between the first speed and the second speed is less than the preset error value and the first speed and the second speed are both greater than the preset speed, the throttle controller 3 controls the opening of the throttle 0 to achieve accurate and reliable operation of the forklift speed limiting device. Among them, the positioning module can use a GPS module or a Beidou module, and the positioning module can collect and calculate the moving distance information of the forklift, that is, calculate the moving distance per unit time, so as to obtain the second speed of the forklift. The preset error value can be obtained according to actual tests, for example, the preset error value can be 2km / h, 1km / h, etc., and this application does not make specific restrictions on this.

[0050] In addition, in some embodiments of the present application, the forklift speed limiting device may further include an alarm, the alarm is arranged on the forklift body, and the control module is electrically connected to the alarm. Among them, the alarm may adopt an acoustic alarm, a light alarm or an acoustic and light alarm. It is understandable that by setting the control module, the alarm can be controlled to sound an alarm when the difference between the first vehicle speed and the second vehicle speed is less than a preset error value and the first vehicle speed and the second vehicle speed are both greater than a preset speed. The embodiment of the present application can automatically identify the speed information of the forklift so as to timely alarm and limit the speed when speeding, and can limit the speed of the forklift to a safe driving speed, effectively ensuring the safe driving of the forklift.

[0051] In addition, in some embodiments of the present application, the forklift speed limiting device may further include a display screen, which is disposed on the forklift body, and is electrically connected to the control module, and can display the speed of the forklift in real time. The display screen may be an LED display screen or a liquid crystal display screen. The safe speed may be displayed on the display screen in green font. When the forklift speed exceeds the preset speed, the overspeed may be displayed on the display screen in red font, thereby realizing the forklift speed limit alarm warning.

[0052] The display screen can be divided into two categories according to the installation position of the display screen, one is the supervisory display screen and the other is the self-test display screen. Both the supervisory display screen and the self-test display screen are electrically connected to the control module. Among them, the supervisory display screen is arranged on the top of the forklift body, and the self-test display screen is arranged beside the main instrument panel in the forklift cab. In this way, the driver in the forklift can give an overspeed reminder through the self-test display screen, and the outsiders can supervise through the supervisory display screen, so as to achieve the normal driving speed of the vehicle and ensure the safe operation of the vehicle. It is understandable that the size of the supervisory display screen can be set to be larger than the size of the self-test display screen, so that the outsiders can accurately and clearly understand whether the forklift is speeding.

[0053] Secondly, the second aspect of the present application further provides a forklift, which includes the forklift speed limiting device as described in any one of the first aspects above.

[0054] The forklift provided in the embodiment of the present application has all the beneficial effects of the forklift speed limiting device of the above embodiment, because it has the forklift speed limiting device of the above embodiment. The forklift speed limiting device has been described in detail above and will not be described again here.

[0055] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A forklift speed limiting device, characterized in that: include: A rotation speed sensor, disposed on a crankshaft of an engine of the forklift, for measuring a first vehicle speed of the forklift; A driving assembly, comprising a driving motor and a throttle control screw, wherein the throttle control screw is connected to the throttle of the forklift, and an output end of the driving motor is connected to the throttle control screw for driving the throttle control screw to telescope; as well as A throttle controller is electrically connected to the rotation speed sensor and the drive motor, and is used to control the drive motor to adjust the opening of the throttle to limit the speed of the forklift when the first vehicle speed is greater than a preset speed.

2. The forklift speed limiting device according to claim 1, characterized in that: Also includes: A position sensor, disposed near the throttle of the forklift, for detecting the opening of the throttle; The throttle controller is electrically connected to the position sensor, and is used to control the drive motor according to the first vehicle speed and the opening of the throttle.

3. The forklift speed limiting device according to claim 1, characterized in that: Also includes: A positioning module, disposed on the body of the forklift, for collecting the moving distance of the forklift and determining the second vehicle speed of the forklift according to the moving distance per unit time; A control module is electrically connected to the speed sensor, the positioning module and the throttle controller, and is used to control the opening of the throttle through the throttle controller when the difference between the first vehicle speed and the second vehicle speed is less than a preset error value and the first vehicle speed and the second vehicle speed are both greater than a preset speed.

4. The forklift speed limiting device according to claim 3, characterized in that: Also includes: An alarm device is arranged on the body of the forklift; The control module is electrically connected to the alarm, and is used to control the alarm to sound an alarm when the difference between the first vehicle speed and the second vehicle speed is less than a preset error value and the first vehicle speed and the second vehicle speed are both greater than a preset speed.

5. The forklift speed limiting device according to claim 4, characterized in that: Also includes: A display screen is arranged on the body of the forklift, and the display screen is electrically connected to the control module and is used for displaying the speed of the forklift in real time.

6. The forklift speed limiting device according to claim 5, characterized in that: The display screen comprises: A supervisory display screen and a self-checking display screen are both electrically connected to the control module, the supervisory display screen is arranged on the top of the forklift body, and the self-checking display screen is arranged beside the main instrument panel of the cab of the forklift; Wherein, the size of the supervision display screen is larger than the size of the self-check display screen.

7. The forklift speed limiting device according to claim 6, characterized in that: The speed sensor is a Hall sensor or a photoelectric encoder, and / or The display screen adopts an LED display screen or a liquid crystal display screen.

8. The forklift speed limiting device according to claim 2, characterized in that: The position sensor adopts a laser distance measuring sensor.

9. The forklift speed limiting device according to claim 4, characterized in that: The alarm is a sound alarm and / or a light alarm.

10. A forklift, characterized in that: include: A forklift speed limiting device as claimed in any one of claims 1 to 9.

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