Loader gearbox double-speed-measuring structure

Abstract

The utility model discloses a loading machine gearbox double speed measurement structure which comprises a gearbox assembly, an output end rotating speed sensor, an output gear, an input gear and an input end rotating speed sensor. The input end and the output end of a shell of the gearbox assembly are each provided with a rotating speed sensor installation threaded hole. The output end rotating speed sensor is installed on an output end rotating speed sensor installation threaded hole of the gearbox shell. The input end rotation speed sensor is installed on an input end rotation speed sensor installation threaded hole of a gearbox shell so as to monitor the rotation speed of an output gear and an input gear of a gearbox in real time. And the output end rotating speed sensor and the input end rotating speed sensor are respectively connected with an ECU (Electronic Control Unit) signal line of the loader. The gearbox is simple and compact in structure, the speed of the output gear and the speed of the input gear are measured timely and reliably, and the problems that in the prior art, when the forward or backward speed does not reach zero, gear shifting operation is conducted, the comfort of a driver is seriously affected, and gearbox components are prone to being damaged are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to loader gearbox assembly technical field, concretely relates to loader gearbox double speed measurement structure. BACKGROUND

[0002] When the loader is in the short distance operation scene such as warehouse or small construction site and transfers material, it needs to frequently start and stop and change speed operation, such as carrying back and forth in two adjacent material stacking areas, the distance is short, the speed changes frequently, and the gear needs to be changed frequently, because the forward gear and the reverse gear are opposite movements, the impact brought by the frequent gear changing is larger, especially when the speed of forward or reverse does not reach 0 speed, the impact of gear changing is larger, on the one hand, the driver can feel obvious vibration in the cab, the vibration can make the operator's body shake, the hand is subjected to the reaction force of the steering wheel, and the comfort of the driver is seriously affected, on the other hand, from the overall state of the loader, the whole vehicle body will appear to shake, and the working device (such as the bucket) will also swing slightly, the continuous impact brought by the frequent gear changing will also make the transmission system of the loader emit abnormal sound, like "koudun" or "dada" sound, the sound prompts that the gearbox and the transmission component are bearing larger pressure, and long-term so it is easy to cause damage of the gearbox components, such as gear wear, clutch plate overconsumption and the like. In order to overcome the above defects, it is necessary to develop a loader gearbox double speed measurement structure to avoid gear changing operation when the speed of forward or reverse does not reach 0 speed. SUMMARY

[0003] The utility model discloses a kind of loader gearbox double speed measurement structures of simple structure, compact, to output gear and input gear speed measurement timely reliable, to solve the problem that the gear of prior art is changed when the speed of forward or reverse does not reach 0 speed, seriously affect the comfort of the driver and easily lead to damage of the gearbox components.

[0004] To achieve the above object, the utility model loader gearbox double speed measurement structure includes gearbox assembly 1, output end rotation speed sensor 2, output gear 3, input gear 4, input end rotation speed sensor 5;The shell of the gearbox assembly 1 is equipped with a rotation speed sensor mounting threaded hole at input end and output end respectively;The output end rotation speed sensor 2 is installed on the rotation speed sensor mounting threaded hole of the output end of gearbox shell;The input end rotation speed sensor 5 is installed on the rotation speed sensor mounting threaded hole of the input end of gearbox shell, to monitor the rotation speed of gearbox output gear 3 and input gear 4 in real time;The output end rotation speed sensor 2 and input end rotation speed sensor 5 are connected with the ECU signal line of loader respectively.

[0005] The sensing end of the output end speed sensor 2 is 0.8-1.3mm away from the top of the output gear teeth; the sensing end of the input end speed sensor 5 is 0.8-1.3mm away from the surface of the input gear teeth.

[0006] The ECU of the loader is of OC-800MD model and is supplied by Shandong Doctor Hydraulic Co., Ltd., and is commercially available and belongs to the prior art; the ECU can automatically adjust engine power, hydraulic system pressure and flow parameters according to different working modes such as loading, unloading, driving and real-time working conditions such as load size and road conditions, can receive signals from the speed sensor and send instructions to the shift mechanism after instant processing, and can realize optimal performance and 0-speed shifting functions.

[0007] The double-speed measuring structure of the transmission of the loader has the following technical features and beneficial effects by adding speed sensors at the input end and the output end of the transmission:

[0008] 1. Speed sensors are arranged at the input end and the output end of the transmission, and the two speed sensors are connected with the ECU signal line of the loader respectively, so that 0-speed shifting is realized, and the problem that the shifting operation seriously affects the comfort of the driver and easily causes damage to the transmission components when the speed of the forward or reverse movement does not reach 0-speed in the prior art is solved.

[0009] 2. The structure is simple and compact, and the operation is convenient and efficient. DETAILED DESCRIPTION

[0010] Figure 1 is a front view structural schematic diagram of the double-speed measuring structure of the transmission of the loader.

[0011] Figure 2 is Figure 1 a sectional view structural schematic diagram of A-A in the figure.

[0012] Figure 3 is Figure 1 a sectional view structural schematic diagram of B-B in the figure.

[0013] The double-speed measuring structure of the transmission of the loader has the following technical features and beneficial effects by adding speed sensors at the input end and the output end of the transmission: DETAILED DESCRIPTION

[0014] The specific embodiments of the double-speed measuring structure of the transmission of the loader will be further described in detail in combination with the drawings.

[0015] Figures 1-3The utility model discloses loader gearbox double speed measuring structure includes gearbox assembly 1, output end speed sensor 2, output gear 3, input gear 4, input end speed sensor 5, the casing of gearbox assembly 1 is equipped with a speed sensor mounting thread hole respectively at the input and the output, output end speed sensor 2 is installed on the speed sensor mounting thread hole of the output end of gearbox casing, and the inductive end of output end speed sensor 2 is 0.8~1.3mm from the tooth top of output gear, input end speed sensor 5 is installed on the speed sensor mounting thread hole of the input of gearbox casing, and the inductive end of input end speed sensor 5 is 0.8~1.3mm from the tooth surface of input gear, to monitor the speed of output gear 3 and input gear 4 in real time, output end speed sensor 2 and input end speed sensor 5 are connected with the ECU signal line of loader respectively.

[0016] The utility model discloses loader gearbox double speed measuring structure adds speed sensor at the input and the output of gearbox, can realize 0 speed shift to overcome shift impact: when the shift operation of going forward and going backward or going backward and going forward is carried out, whether the output gear speed is 0 is monitored to output end sensor, if the output gear speed is 0, output end sensor will send signal to the ECU of loader and realize shift, if the output gear speed is not 0, will be reduced to 0 after speed, and output end sensor will send signal to the ECU of loader and realize shift again. Input sensor is always linked with engine in the process of shift, makes engine always keep idle state in the process of going forward and going backward shift so that can directly drive after shift is completed.

Claims

1. A double speed measuring structure of a loader gearbox, comprising a gearbox assembly (1), an output gear (3) and an input gear (4); characterized in that: It also includes output end speed sensor (2) and input end speed sensor (5); the housing of the gearbox assembly (1) is provided with a speed sensor mounting threaded hole at the input end and the output end respectively; the output end speed sensor (2) is mounted on the speed sensor mounting threaded hole of the output end of the gearbox housing; the input end speed sensor (5) is mounted on the speed sensor mounting threaded hole of the input end of the gearbox housing, to monitor the speed of the gearbox output gear (3) and input gear (4) in real time; the output end speed sensor (2) and input end speed sensor (5) are connected with the ECU signal line of the loader respectively.

2. The loader transmission dual speed sensing structure of claim 1, wherein: The sensing end of the output end speed sensor (2) is 0.8-1.3mm away from the addendum of the output gear; the sensing end of the input end speed sensor (5) is 0.8-1.3mm away from the tooth surface of the input gear.

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