Electronic gear selecting and shifting mechanism of tractor gearbox

Abstract

The utility model provides an electronic gear selecting and shifting mechanism of a tractor gearbox. Relates to the technical field of gearboxes. The electronic gear selecting and shifting mechanism of the tractor gearbox comprises a gear shifting handle, an electric control box, an XY gear selecting and shifting mechanism and a gear shifting upper cover assembly, the XY gear selecting and shifting mechanism and the gear shifting upper cover assembly are used in cooperation, the gear shifting handle is electrically connected with the electric control box, the electric control box is electrically connected with the XY gear selecting and shifting mechanism, and the XY gear selecting and shifting mechanism is electrically connected with the gear shifting upper cover assembly. The gear shifting upper cover assembly comprises two cover plates, a hexagonal plug screw, an upper cover shell, a reverse gear signal switch, three steel balls, two interlocking blocks, an interlocking pin, three compression springs, a third-fourth gear shifting fork shaft, a third-fourth gear shifting fork, a first-second gear shifting fork shaft, a reverse gear shifting fork shaft, five elastic pins, two shifting blocks, a first-second gear shifting fork, a reverse gear shifting fork and a plug piece. The utility model has the advantages that the intelligent upgrading is realized with lower cost, and the operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to gearbox technical field especially relates to a tractor gearbox's electronic selection gear shifting mechanism. BACKGROUND

[0002] In recent years, the shift form of agricultural tractor presents the intelligent and automatic development trend unceasingly, in addition to traditional mechanical shift, power reversing and power shift, CVT stepless speed change and other emerging shift forms emerge as the times require.

[0003] However, in the technical reliability, stability, cost, maintenance difficulty increase and other aspects, it brings more challenges to manufacturers and users. The manufacturers need a relatively long cycle from the research and development of new technology, test verification, technical improvement, technical sedimentation to the stability of technology. The skill reserve and maintenance experience of the after-sales personnel of the manufacturers in the new field are obviously insufficient. Many users still choose traditional mechanical shift tractor when purchasing agricultural machinery from the stability and after-sales service. Therefore, the manufacturers still cannot cut off the traditional mechanical shift, and an interim solution is urgently needed.

[0004] Therefore, it is necessary to provide a new electronic selection gear shifting mechanism of tractor gearbox to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a kind of electronic selection gear shifting mechanism of tractor gearbox with lower cost to realize intelligent upgrading, and it is convenient to operate.

[0006] To solve the above technical problems, the electronic gear selecting and shifting mechanism of the tractor gearbox provided by the utility model comprises: a gear shifting handle, an electric control box, an XY gear selecting and shifting mechanism and a gear shifting upper cover assembly, wherein the gear shifting handle and the electric control box are electrically connected, the electric control box and the XY gear selecting and shifting mechanism are electrically connected, the gear shifting upper cover assembly comprises two cover plates, a hexagonal screw plug, an upper cover shell, a reverse gear signal switch, three steel balls, two interlocking blocks, an interlocking pin, three compression springs, a three-fourth gear shifting fork shaft, a three-fourth gear shifting fork, a first-second gear shifting fork shaft, a reverse gear shifting fork shaft, five elastic column pins, two shifting blocks, a first-second gear shifting fork, a reverse gear shifting fork and a plug piece, the XY gear selecting and shifting mechanism is installed on the upper cover shell through bolts, the two cover plates are fixedly installed at the two ends of the upper cover shell through bolts respectively, the hexagonal screw plug is threadedly installed in the process hole of the upper cover shell, the reverse gear signal switch is arranged on the upper cover shell, three shaft holes are formed in the upper cover shell, the three-fourth gear shifting fork shaft, the first-second gear shifting fork shaft and the reverse gear shifting fork shaft are respectively installed in the three shaft holes, and three inner cavities are formed in the upper cover shell, the three compression springs are respectively arranged in the three inner cavities, the three steel balls are respectively installed at the bottom ends of the three compression springs, the three-fourth gear shifting fork shaft, the first-second gear shifting fork shaft and the reverse gear shifting fork shaft are all provided with circular grooves, the three steel balls are respectively inserted into the three circular grooves, the interlocking block and the interlocking pin are used in cooperation, and interlocking is formed on the gear positions, the three-fourth gear shifting fork is installed on the three-fourth gear shifting fork shaft through an elastic column pin, one of the shifting blocks is installed on the three-fourth gear shifting fork shaft through an elastic column pin, the other shifting block is installed on the reverse gear shifting fork shaft through an elastic column pin, the first-second gear shifting fork is installed on the first-second gear shifting fork shaft through an elastic column pin, and the reverse gear shifting fork is installed on the reverse gear shifting fork shaft through an elastic column pin.

[0007] Preferably, a sink is formed in one side of the upper cover shell, and the plug piece is installed in the sink.

[0008] Preferably, the XY gear selecting and shifting mechanism comprises an X-axis gear shifting motor, a Y-axis gear shifting motor, an X-axis angle sensor and a Y-axis angle sensor.

[0009] Preferably, four forward gear position buttons and a reverse gear button are arranged on the gear shifting handle.

[0010] Compared with the related art, the electronic gear selecting and shifting mechanism of the tractor gearbox has the following beneficial effects:

[0011] This utility model provides an electronic gear shifting mechanism for tractor gearboxes, which can be installed without damage on the basis of existing mechanical geared gearboxes. It involves minimal changes, little increase in cost, simple structure, high reliability, and can greatly improve the ease of operation. It provides manufacturers with a transitional technical solution, and can also improve the automation and intelligence level of traditional mechanical gear shifting agricultural machinery, enhance user experience, and save customers money. Attached Figure Description

[0012] Figure 1 This is a schematic diagram showing the electrical connection of the gear shift lever, the electronic control box, and the XY gear shifting mechanism in this utility model;

[0013] Figure 2 This is a schematic cross-sectional view of the assembly structure of the upper cover shell and the XY gear shifting mechanism in this utility model;

[0014] Figure 3 for Figure 2 The diagram shows a cross-sectional view of AA.

[0015] Figure 4 This is an assembly diagram of the third and fourth gear shift fork shaft, the first and second gear shift fork shaft, and the reverse gear shift fork shaft in this utility model;

[0016] Figure 5 This is a schematic diagram of the shift control direction in this utility model.

[0017] The following components are labeled in the diagram: 1. Cover plate; 2. Hexagonal screw plug; 3. Upper cover housing; 4. Reverse gear signal switch; 5. Steel ball; 6. Interlock block; 7. Interlock pin; 8. Compression spring; 9. Third and fourth gear shift fork shaft; 10. Third and fourth gear shift fork; 11. First and second gear shift fork shaft; 12. Reverse gear shift fork shaft; 13. Elastic pin; 14. Shift block; 15. First and second gear shift fork; 16. Reverse gear shift fork; 17. Plug; 18. XY gear selector mechanism; 19. Shift lever; 20. Electrical control box. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Please refer to the following: Figures 1-5 ,in, Figure 2 This is a schematic cross-sectional view of the assembly structure of the upper cover shell and the XY gear shifting mechanism in this utility model; Figure 3 for Figure 2 The diagram shows a cross-sectional view of AA. Figure 4 This is an assembly diagram of the third and fourth gear shift fork shaft, the first and second gear shift fork shaft, and the reverse gear shift fork shaft in this utility model; Figure 5The utility model discloses a gear shifting control direction schematic diagram. The electronic gear selecting and shifting mechanism of tractor gearbox includes: gear handle 19, electric control box 20, XY gear selecting and shifting mechanism 18 and gear shifting upper cover assembly, XY gear selecting and shifting mechanism 18 and gear shifting upper cover assembly cooperate and use, wherein, gear handle 19 and electric control box 20 are electrically connected, electric control box 20 and XY gear selecting and shifting mechanism 18 are electrically connected, and the XY gear selecting and shifting mechanism 18 including X axis gear shifting motor, Y axis gear shifting motor, X axis angle sensor and Y axis angle sensor is set, and four forward gear buttons and a reverse gear button are equipped on gear handle 19.

[0020] In the above manner, the action sequence of the X and Y axis gear shifting motors in the XY gear selecting and shifting mechanism 18, the gear selecting and shifting knob translation and rotation amount are controlled by the program calibrated in the electric control box 20, and the X and Y axis angle sensors detect whether the gear selecting and shifting is in place.

[0021] The control logic is as follows:

[0022]

[0023]

[0024] In the mode, the shift cover assembly is provided with two cover plates 1, a hexagonal plug 2, a cover shell 3, a reverse signal switch 4, three steel balls 5, two interlocking blocks 6, an interlocking pin 7, three compression springs 8, a three-fourth shift fork shaft 9, a three-fourth shift fork 10, a first-second shift fork shaft 11, a reverse shift fork shaft 12, five elastic column pins 13, two shift blocks 14, a first-second shift fork 15, a reverse shift fork 16 and a plug 17, the XY shift selecting mechanism 18 is mounted on the cover shell 3 through bolts, the two cover plates 1 are fixedly mounted on the two ends of the cover shell 3 through bolts respectively, the hexagonal plug 2 is threadedly mounted in the process hole of the cover shell 3, the reverse signal switch 4 is arranged on the cover shell 3, three shaft holes are formed in the cover shell 3, the three-fourth shift fork shaft 9, the first-second shift fork shaft 11 and the reverse shift fork shaft 12 are respectively mounted in the three shaft holes, and three inner cavities are formed in the cover shell 3, the three compression springs 8 are arranged in the three inner cavities respectively, the three steel balls 5 are mounted at the bottom ends of the three compression springs 8, the three-fourth shift fork shaft 9, the first-second shift fork shaft 11 and the reverse shift fork shaft 12 are all provided with circular grooves, the three steel balls 5 are inserted into the three circular grooves respectively, the interlocking block 6 and the interlocking pin 7 are used in cooperation, the gear positions are interlocked, the three-fourth shift fork 10 is mounted on the three-fourth shift fork shaft 9 through an elastic column pin 13, one of the shift blocks 14 is mounted on the three-fourth shift fork shaft 9 through an elastic column pin 13, the other shift block 14 is mounted on the reverse shift fork shaft 12 through an elastic column pin 13, the first-second shift fork 15 is mounted on the first-second shift fork shaft 11 through an elastic column pin 13, the reverse shift fork 16 is mounted on the reverse shift fork shaft 12 through an elastic column pin 13, and a sinking groove is formed in one side of the cover shell 3, and the plug 17 is mounted in the sinking groove.

[0025] The working principle of the electronic shift selecting mechanism of the tractor gearbox is as follows:

[0026] The agricultural machine operator operates the shift handle 19 in the cab, selects the shift button, and then steps on the clutch pedal, and the electric control box 20 issues a logical action instruction signal to the two motors of the XY shift selecting mechanism 18 after detecting the clutch pedal signal, so that the shift selecting and shifting shift knobs of the XY shift selecting mechanism 18 are translated or rotated, and the translation and rotation amount are controlled by the program calibrated in the electric control box 20, and the X and Y axis angle sensors detect whether the shift selecting and shifting is in place.

[0027] The shift selecting and shifting shift knobs drive the shift blocks 14 on the three-fourth shift fork shaft 9, the first-second shift fork shaft 11 and the reverse shift fork shaft 12, and push the three-fourth shift fork 10, the first-second shift fork 15 and the reverse shift fork 16 to the designated shift position, and the compression springs 8 and the steel balls 5 are positioned into the circular grooves on the shift fork shafts, so as to complete the gear self-locking, and thus the gear position is replaced.

[0028] Compared with the related art, the electronic gear selecting and shifting mechanism of the tractor gearbox has the following beneficial effects:

[0029] The electronic gear selecting and shifting mechanism of the tractor gearbox can be installed on the basis of the existing mechanical gear type gearbox without damage, has small variation, low cost increase, simple structure, high reliability, and can greatly improve the operation convenience, provides a transitional technical solution for manufacturers, improves the automation and intelligent level of traditional mechanical gear shifting by one level, improves the user experience, and saves the customer spending.

[0030] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion using the utility model specification and drawing contents, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. An electronic selection gear shifting mechanism of tractor gearbox, comprising a gear shifting handle, an electric control box, an XY selection gear shifting mechanism and a gear shifting upper cover assembly, the XY selection gear shifting mechanism and the gear shifting upper cover assembly are used in cooperation, wherein, The shift handle and the electric control box are electrically connected, and the electric control box and the XY selection shift mechanism are electrically connected, characterized in that the shift upper cover assembly comprises two cover plates, a hexagonal plug, an upper cover shell, a reverse signal switch, three steel balls, two interlocking blocks, an interlocking pin, three compression springs, a three-fourth shift fork shaft, a three-fourth shift fork, a first-second shift fork shaft, a reverse shift fork shaft, five elastic column pins, two shift blocks, a first-second shift fork, a reverse shift fork and a plug piece, the XY selection shift mechanism is installed on the upper cover shell through bolts, the two cover plates are fixedly installed at both ends of the upper cover shell through bolts, the hexagonal plug is threadedly installed in the process hole of the upper cover shell, the reverse signal switch is arranged on the upper cover shell, three shaft holes are formed in the upper cover shell, the three-fourth shift fork shaft, the first-second shift fork shaft and the reverse shift fork shaft are respectively installed in the three shaft holes, and three inner cavities are formed in the upper cover shell, the three compression springs are arranged in the three inner cavities respectively, the three steel balls are respectively installed at the bottom ends of the three compression springs, the three-fourth shift fork shaft, the first-second shift fork shaft and the reverse shift fork shaft are all provided with circular grooves, the three steel balls are respectively inserted into the three circular grooves, the interlocking block and the interlocking pin are used in cooperation to form interlocking for gear positions, the three-fourth shift fork is installed on the three-fourth shift fork shaft through an elastic column pin, one of the shift blocks is installed on the three-fourth shift fork shaft through an elastic column pin, the other shift block is installed on the reverse shift fork shaft through an elastic column pin, the first-second shift fork is installed on the first-second shift fork shaft through an elastic column pin, and the reverse shift fork is installed on the reverse shift fork shaft through an elastic column pin.

2. The electronic selection gearshift mechanism for a tractor gearbox according to claim 1, characterized in that, A sink is formed in one side of the upper cover shell, and the plug piece is installed in the sink.

3. The electronic selection gear shifting mechanism of a tractor gearbox as claimed in claim 1 wherein, The XY selection shift mechanism comprises an X-axis shift motor, a Y-axis shift motor, an X-axis angle sensor and a Y-axis angle sensor.

4. The electronic selection gear shifting mechanism of a tractor gearbox as claimed in claim 1 wherein, Four forward gear buttons and a reverse gear button are arranged on the shift handle.

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