CN113685534A - Shift handle, shift handle gear calibration method and working machine - Google Patents

Abstract

Embodiments of the present invention provide a shift handle, a method for calibrating a shift handle, and a working machine. The shift handle includes a shift lever, a main shaft and a flexible shaft, the main shaft is drive-connected with the flexible shaft, the main shaft is fixedly installed with a Hall element, and the shift lever is rotatably installed on the main shaft through a connecting piece , a magnetic piece is fixedly installed on the connecting piece. In the shift handle and working machine provided by the embodiment of the present invention, the magnetic member fixedly installed on the adapter rotates together with the shift lever, and the Hall element fixedly installed on the main shaft can detect the changing magnetic flux to output analog The current gear position can be determined according to the analog signal detected by the Hall element. Compared with the traditional method of detecting gear positions with multiple receiving sensors, the cost is low.

Description

Shift handle, shift handle gear calibration method and working machine

technical field

The invention relates to the technical field of working machines, in particular to a shift handle, a method for calibrating the gear position of the shift handle, and a working machine.

Background technique

At present, most of the common shifting mechanisms are flexible shaft shifting. The flexible shaft connects the rack and the machine, the gear and the rack are matched, the rack is engraved with a slot, and there are steel balls and springs under the rack. The cooperation of the rear slot of the rack realizes the shifting function.

When using the shift lever to shift gears, it is often necessary to display the gear position so that the driver can view the current gear position information. However, in most existing detection structures, a plurality of detection elements are correspondingly arranged according to the number of gear positions, and each detection element corresponds to one gear position, resulting in high detection cost and complicated arrangement of detection elements.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a shift handle, a method for calibrating a shift handle, and a working machine, which are used to solve the defects of complex structure and high cost of shifting handle detection gear in the prior art.

An embodiment of the present invention provides a shift handle, which includes a shift lever, a main shaft and a flexible shaft, the main shaft and the flexible shaft are drive-connected, the main shaft is fixedly installed with a Hall element, and the shift lever passes through a connecting piece It is rotatably mounted on the main shaft, and a magnetic piece is fixedly mounted on the connecting piece.

According to a shift handle provided by an embodiment of the present invention, the connecting member is a bolt, the magnetic member is mounted on a nut of the bolt, and the magnetic member is located at the center of the nut.

According to a shift handle provided by an embodiment of the present invention, the magnetic member is a magnetic steel.

A shift handle provided according to an embodiment of the present invention further includes a controller, the controller is connected to the Hall element, and the controller is used to control a starter relay to start when the shift handle is in neutral .

An embodiment of the present invention also provides a method for calibrating a gear shift handle, comprising:

Obtain the voltage signal detected by the Hall element, and determine the current gear position based on the voltage signal and the preset gear position information;

Wherein, the preset gear information includes an upper voltage limit and a lower voltage limit corresponding to each gear, and the shift handle is the above-mentioned shift handle.

According to a method for calibrating a shift handle gear position provided by an embodiment of the present invention, the lower voltage limit and the upper voltage limit are floated by 15% to 25% compared with the corresponding gear position voltage.

According to a method for calibrating a shift handle gear position provided by an embodiment of the present invention, the lower voltage limit and the upper voltage limit are floated by 20% compared with the corresponding gear position voltage.

According to a method for calibrating a shift handle gear position provided by an embodiment of the present invention, the absolute value of the relative error between the voltage signal and the upper voltage limit of the gear position in which the voltage signal is located is less than a preset percentage or the voltage signal and its position. In the case that the relative error of the lower voltage limit of the gear is less than a preset percentage, the lower voltage limit and the upper voltage limit are adjusted to be higher than the corresponding gear voltage floating percentage.

An embodiment of the present invention further provides a working machine, including the shift handle described in any one of the above.

A work machine provided according to an embodiment of the present invention further includes a communication module, where the communication module is configured to communicate with an external cloud platform.

In the shift handle, the shift handle gear position calibration method and the working machine provided by the embodiments of the present invention, the magnetic member fixedly installed on the adapter rotates together with the shift lever, and the Hall element fixedly installed on the main shaft can The changing magnetic flux is detected to output an analog signal, and the current gear position can be determined according to the analog signal detected by the Hall element. Compared with the traditional method of detecting gear positions with multiple receiving sensors, the cost is low.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are For some embodiments of the present invention, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a schematic structural diagram of a shift handle provided by an embodiment of the present invention;

2 is a flowchart of a method for calibrating a shift handle gear position provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention.

Reference number:

1: shift lever; 2: main shaft; 3: flexible shaft; 4: Hall element; 5: connecting piece; 6: magnetic piece; 7: rack box.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The structure of the shift handle and the working machine according to the embodiment of the present invention will be described below with reference to FIG. 1 .

An embodiment of the present invention provides a shift handle, as shown in FIG. 1 , which includes a shift lever 1 , a main shaft 2 and a flexible shaft 3 . The main shaft 2 is connected with the flexible shaft 3 in a driving manner. The main shaft 2 is fixedly installed with a Hall element 4 .

During the shifting process of operating the shift lever 1, the adapter 5 and the shift lever 1 move together around the main shaft 2, and then pull the flexible shaft 3 to realize shifting. Among them, the magnetic member 6 is fixedly installed on the connecting member 5 and rotates with the rotation of the shift lever 1, and the Hall element 4 is fixedly installed on the main shaft 2. Therefore, with the rotation of the shift lever 1, the magnetic member 6 rotates accordingly. The magnetic flux of the Hall element is changed, thereby outputting a changed analog signal.

When the shift lever 1 is in different positions, the analog signals measured by the Hall element 4 are different, and the elongation of the flexible shaft 3 is different. That is, when the shift lever 1 is in different positions, the shift handle corresponds to different gears.

In the shift handle provided by the embodiment of the present invention, the magnetic member 6 fixedly installed on the adapter 5 rotates together with the shift lever 1, and the Hall element 4 fixedly installed on the main shaft 2 can detect the changing magnetic flux to The analog signal is output, and the current gear position can be determined according to the analog signal detected by the Hall element 4 , which has low cost compared with the traditional method of detecting gear positions with multiple receiving sensors.

Specifically, as shown in FIG. 1 , the connecting member 5 is a bolt, and the magnetic member 6 is installed on the nut of the bolt. In addition, the connecting member 5 can also be other intermediate structures for installing the shift lever 1 on the main shaft 2, as long as it can realize the connection between the shift lever 1 and the main shaft 2 and can move together with the shift lever 1 That's it. The magnetic element 6 is installed on the nut of the bolt. When it rotates with the shift lever 1 , the magnetic field of the magnetic element 6 changes, the magnetic flux detected by the Hall element 4 changes, and a changed analog signal is output.

Optionally, the magnetic member 5 is located in the center of the nut. With the rotation of the shift lever 1, the rotation of the magnetic member 6 causes the direction of the magnetic field to change. If the magnetic member 5 is installed beside the nut, when it rotates to a symmetrical position, the detected analog signal has a small degree of discrimination, which is easy to occur. confused. In contrast, in the shift handle provided by the embodiment of the present invention, the magnetic member 5 is installed in the center of the nut, which can effectively avoid confusion.

Specifically, the magnetic member 5 is a magnetic steel. Besides, the magnetic member 5 may also be a magnet, which is not specifically limited in the embodiment of the present invention.

Specifically, the connecting member 5 is provided with a groove, and the magnetic member 6 is fixedly installed in the groove by means of bonding or clamping.

As shown in FIG. 1 , the shift handle provided by the embodiment of the present invention further includes a rack case 7 , the main shaft 2 is connected to the input end of the rack case 7 , and the flexible shaft 3 is connected to the output end of the rack case 7 .

Among them, the rack box 7 adopts the existing transmission box structure, and its internal structure will not be repeated. The input end of the rack case 7 is connected with the main shaft 2 , and the output end of the rack case 7 is connected with the flexible shaft 3 .

On the basis of any of the above embodiments, the shift handle provided by the embodiment of the present invention further includes a controller, which is connected to the Hall element 4 , and is used to control the starting relay to start when the shift handle is in neutral.

The controller is connected to the Hall element 4 in communication, and the analog signal detected by the Hall element 4 is transmitted to the controller, and the controller judges the gear position of the shift handle according to this, and only controls the shift handle when the shift handle is in neutral. The start relay is activated to realize the neutral gear protection function.

Optionally, the controller is an integrated display and control machine, and the integrated display and control machine includes a processor and a display, the display is used to display the gear position signal, and the processor is used to determine the gear position of the working machine according to the measured value of the Hall element 4 .

The processor is the data processing center for processing the Hall element 4. During the processing, it compares with the calibration range corresponding to each gear to determine the current gear, and the display displays the current gear information. It can be understood that the processor and the display can also be separated, which is not specifically limited in this embodiment of the present invention.

An embodiment of the present invention also provides a method for calibrating a gear shift handle, comprising:

Step S210, acquiring the voltage signal detected by the Hall element 4;

Step S220, determining the current gear based on the voltage signal and the preset gear information.

Wherein, the preset gear position information includes the upper voltage limit and the lower voltage limit corresponding to each gear position, and the shift handle is the above-mentioned shift handle.

It should be noted that, during the rotation of the shift lever 1, the Hall element 4 outputs a continuous voltage signal as the shift lever 1 changes. That is, the position of the shift lever 1 is different, and the corresponding voltage signal is different. The gear position of each gear corresponding to the shift lever 1 corresponds to a certain gear voltage, but in actual use, due to the different operating habits of operators and the manufacturing errors of different shift handles, the adjustment When the gear is reached, it cannot accurately correspond to the set gear voltage. For this, the shift handle gear calibration method provided by the embodiment of the present invention adopts the method of interval calibration to set the upper voltage limit and lower voltage limit corresponding to each gear. , to avoid the problem of inaccurate display of gears caused by human operation and manufacturing errors.

Specifically, the voltage lower limit and the voltage upper limit are floated by 15%-25% compared to the corresponding gear voltage.

For example, if the gear voltage is 1V, and the upper and lower voltages fluctuate by 15%, the corresponding lower voltage limit and upper voltage limit are 0.85V and 1.15V, respectively. For another example, if the gear voltage is 1V, and the upper and lower voltages fluctuate by 20%, the corresponding lower voltage limit and upper voltage limit are 0.8V and 1.2V, respectively. For another example, if the gear voltage is 1V, and the upper and lower voltages are floating by 25%, the corresponding voltage lower limit and voltage upper limit are 0.75V and 1.25V, respectively.

Specifically, taking four gears as an example, if the voltage signal output by the Hall element 4 is 0.5±0.1V, the shift handle is in reverse gear; if the voltage signal output by the Hall element 4 is 1.7±0.34V, then The shift handle is in neutral; if the voltage signal output by the Hall element 4 is 3.2±0.64V, the shift handle is in the first gear; if the voltage signal output by the Hall element 4 is 4.5±0.9V, the shift handle is in the second gear block.

Optionally, the lower voltage limit and the upper voltage limit are floated by 20% compared to the corresponding gear voltage.

On the basis of any of the above embodiments, the absolute value of the relative error between the voltage signal and the upper voltage limit of the gear in which it is located is less than a preset percentage or the relative error between the voltage signal and the lower voltage limit of the gear in which it is located is less than a preset percentage In the case of , increase the voltage lower limit and voltage upper limit compared to the corresponding gear voltage floating percentage.

If the voltage signal output by the Hall element 4 exceeds the upper voltage limit or the lower voltage limit, the corresponding gear operation cannot be performed after the gear adjustment is performed. Therefore, the lower voltage limit and the upper voltage limit need to be adjusted according to the usage.

Specifically, when the absolute value of the relative error between the voltage signal and the upper voltage limit of the gear in which it is located is less than a preset percentage or the relative error between the voltage signal and the lower voltage limit of the gear in which it is located is less than the preset percentage, it indicates that the The voltage signal output by the element 4 is close to the upper and lower limits of the preset gear information. At this time, the lower voltage limit and the voltage upper limit are increased compared with the corresponding gear voltage floating percentage, that is, the coverage interval of the preset gear information is expanded. Make sure that the detected voltage signal can still fall within the corresponding preset gear information.

The preset percentage is determined according to experience or historical data, and may be 5% or 4%. Taking 5% as the preset percentage, the gear voltage is 1V, and the corresponding voltage lower limit and voltage upper limit are 0.8V and 1.2V as an example, the voltage signal output by the Hall element 4 is 1.15V, which is 1.2V with the upper voltage limit. The relative error is (1.15-1.2)/1.15=-4.3%, and the corresponding absolute value is 4.3%, which is less than the preset percentage of 5%. At this time, adjust the upper and lower voltage limits to avoid the voltage signal cannot fall during use. into the interval corresponding to the preset gear information. Similarly, if the voltage signal output by the Hall element is 0.85, the relative error between it and the lower voltage limit is (0.83-0.8)/0.83=3.6%, which is less than the preset percentage of 5%. At this time, it is also necessary to adjust the corresponding gear information upper and lower voltage limits. For example, the floating percentage can be increased from 20% to 30%, and the corresponding upper and lower voltage limits are 0.7V and 1.3V, respectively, to ensure that the voltage signal detected during subsequent use can still fall within the corresponding gear range. .

The calibration method provided by the embodiment of the present invention adjusts the preset gear position information according to the actual situation of the current gear shift during use, so as to avoid gear adjustment failures.

In addition, the preset gear information can also be adjusted after the shift handle is used for a preset time. The preset time is manually set according to experience or determined according to the degree of use of the shift handle. The preset time is based on the time required for the cumulative use of the shift handle until the voltage signal output by the Hall element 4 cannot fall into the originally set preset gear information. After the shift handle is used for a long time, the gear voltage will shift. For this reason, the preset gear information is adjusted by self-learning after the shift handle is used for a preset time, so as to accurately identify the current gear.

As shown in FIG. 3 , on the basis of the foregoing embodiment, an embodiment of the present invention provides an electronic device, including: a processor (processor) 301, a memory (memory) 302, a communication interface (Communications Interface) 303 and a communication bus 304; of which,

The processor 301 , the memory 302 , and the communication interface 303 communicate with each other through the communication bus 304 . The memory 302 stores program instructions that can be executed by the processor 301, and the processor 301 is used to call the program instructions in the memory 302 to execute the methods provided by the above method embodiments, for example, including: obtaining a Hall element 4. The detected voltage signal; the current gear is determined based on the voltage signal and the preset gear information. Wherein, the preset gear position information includes the upper voltage limit and the lower voltage limit corresponding to each gear position, and the shift handle is the above-mentioned shift handle.

It should be noted that the electronic device in this embodiment may be a server, a PC, or other devices in specific implementation, as long as its structure includes the processor 301 and the communication interface 303 as shown in FIG. 3 . , a memory 302 and a communication bus 304, wherein the processor 301, the communication interface 303 and the memory 302 communicate with each other through the communication bus 304, and the processor 301 can call the logic instructions in the memory 302 to execute the above method. This embodiment does not limit the specific implementation form of the electronic device.

The logic instructions in the memory 302 may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

Further, an embodiment of the present invention discloses a computer program product, the computer program product includes a computer program stored on a non-transitory computer-readable storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer During execution, the computer can execute the methods provided by the above method embodiments, for example, including: acquiring the voltage signal detected by the Hall element 4; and determining the current gear position based on the voltage signal and preset gear position information. Wherein, the preset gear position information includes the upper voltage limit and the lower voltage limit corresponding to each gear position, and the shift handle is the above-mentioned shift handle.

On the basis of the foregoing embodiments, embodiments of the present invention further provide a non-transitory computer-readable storage medium on which a computer program is stored, and the computer program is implemented when executed by a processor to execute the transmission provided by the foregoing embodiments. The method, for example, includes: acquiring a voltage signal detected by the Hall element 4; and determining a current gear position based on the voltage signal and preset gear position information. Wherein, the preset gear position information includes the upper voltage limit and the lower voltage limit corresponding to each gear position, and the shift handle is the above-mentioned shift handle.

In addition, an embodiment of the present invention also provides a working machine, the working machine includes the above shift handle. The working machine can detect the analog signal voltage corresponding to the current gear by using the above-mentioned shift handle, the Hall element 4 fixedly mounted on the main shaft 2 and the magnetic element 5 mounted on the connector 3 cooperate with each other, without the need for The current gear information can be determined by setting the sensors with the same number of gears, the structure is simple, and the cost is low.

In addition to this, the work machine is also equipped with a communication module, which is used to communicate with an external cloud platform.

Through the communication module, the operation machine sends the relevant information such as the use time and frequency of each gear to the external cloud platform, and the external cloud platform collects a large amount of information of the operation machine, and determines the use status of the operation machine through statistical analysis.

Specifically, the working machine may be mechanical equipment such as an excavator, a road roller, and a crane, which is not specifically limited in the embodiment of the present invention.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A shift handle, characterized in that it comprises a shift lever, a main shaft and a flexible shaft, the main shaft is connected with the flexible shaft in a transmission, the main shaft is fixedly installed with a Hall element, and the shift lever is connected by connecting The connecting piece is rotatably mounted on the main shaft, and a magnetic piece is fixedly mounted on the connecting piece. 2 . The shift handle according to claim 1 , wherein the connecting member is a bolt, the magnetic member is mounted on the nut of the bolt, and the magnetic member is located in the center of the nut. 3 . 3 . The shift handle according to claim 1 , wherein the magnetic member is a magnetic steel. 4 . 4 . The shift handle according to claim 1 , further comprising a controller, the controller is connected with the Hall element, and the controller is used for when the shift handle is in neutral gear. 5 . Controls the start of the relay to start. 5. A method for calibrating a gear shift handle, comprising: Obtain the voltage signal detected by the Hall element, and determine the current gear position based on the voltage signal and the preset gear position information; Wherein, the preset gear information includes an upper voltage limit and a lower voltage limit corresponding to each gear, and the shift handle is the shift handle according to any one of claims 1-4. 6 . The method for calibrating a gear shift handle according to claim 5 , wherein the lower voltage limit and the upper voltage limit are floated by 15% to 25% compared to the corresponding gear voltage. 7 . 7 . The method for calibrating a gear shift handle according to claim 6 , wherein the lower voltage limit and the upper voltage limit are floated by 20% compared to the corresponding gear voltage. 8 . 8 . The method for calibrating a gear shift handle according to claim 5 , wherein the absolute value of the relative error between the voltage signal and the upper voltage limit of the gear in which it is located is less than a preset percentage or the voltage. 9 . In the case where the relative error between the signal and the lower voltage limit of the gear in which it is located is less than a preset percentage, the lower voltage limit and the upper voltage limit are increased compared to the voltage floating percentage of the corresponding gear. 9. A working machine, characterized in that it comprises the shift handle according to any one of claims 1-4. 10 . The work machine according to claim 9 , further comprising a communication module configured to communicate with an external cloud platform. 11 .

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