Gear shifting locking mechanism of gear box

Abstract

The utility model relates to the technical field of mechanical equipment, in particular to a gear box gear shifting locking mechanism which comprises a gear shifting rod assembly, a rotating shaft assembly, a shifting fork assembly, a gear shifting air cylinder, a gear locking rod assembly and a gear locking air cylinder. The gear shifting rod assembly is fixedly connected with the output end of the gear shifting air cylinder, a gear locking hole is formed in the upper portion of the gear shifting rod assembly, the gear locking rod assembly is connected with the output end of the gear locking air cylinder, and the gear locking rod assembly can be connected with the gear locking hole in a matched and inserted mode. The gear shifting rod assembly drives the rotating shaft assembly to rotate, then the shifting fork assembly is driven to rotate, the shifting fork assembly drives the gear shifting gear sleeve of the gear box to move, gear shifting is completed, the gear locking air cylinder drives the gear locking rod assembly to stretch into the gear locking hole in the gear shifting rod assembly, gear locking is conducted, and it is guaranteed that the gear box is not out of gear after gear shifting.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical equipment technical field especially relates to a gear box gear shifting locking mechanism. BACKGROUND

[0002] The gear shifting principle of prior art double gear box is through the ventilation of left and right cavity of gear shifting cylinder, makes gear shifting cylinder rod stretch out or retract, thereby drives gear shifting handle to rotate, realizes the high and low speed gear position switching of gear box, and after gear shifting is in place, carries out gear position locking through the self locking of gear shifting cylinder.

[0003] Therefore, it is necessary to propose an improvement to overcome the defects of the prior art. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a gear box gear shifting locking mechanism, guarantees that gear box does not shift after gear shifting, can normally run.

[0005] The technical scheme of the utility model is:

[0006] A gear box gear shifting locking mechanism, including gear shifting rod assembly, pivot assembly, shift fork assembly, gear shifting rod assembly and shift fork assembly are fixedly connected with the both ends of pivot assembly, still include gear shifting cylinder, lock the gear rod assembly and lock the cylinder, gear shifting rod assembly is fixedly connected with gear shifting cylinder output end, and gear shifting rod assembly top is provided with gear position locking hole, and lock the gear rod assembly is connected with lock the cylinder output end, and lock the gear rod assembly can be with gear position locking hole adaptation plug-in. Through gear shifting rod assembly drive pivot assembly rotation, in turn shift fork assembly drive gear box gear shifting gear sleeve movement, complete gear shifting, lock the cylinder drive lock the gear rod assembly and enter gear shifting rod assembly top gear position locking hole, carry out gear locking, guarantee that gear box does not shift after gear shifting.

[0007] As a preferred technical scheme, the gear position locking hole includes an idle gear locking hole, a low gear locking hole, and a high gear locking hole. The three gear locking holes correspond to locking the idle gear, the low gear, and the high gear, respectively.

[0008] As a preferred technical scheme, the gear shifting rod assembly bottom two sides are provided with low gear travel switch and high gear travel switch, respectively. After gear shifting, the gear shifting rod assembly triggers the low gear travel switch or the high gear travel switch, sending a gear shifting in-place signal.

[0009] As a preferred technical solution, a lock travel switch is provided on one side of the lock lever assembly. After the gear is locked, the lock lever assembly triggers the lock travel switch and sends a gear lock signal.

[0010] As a further preferred technical solution, the fork assembly includes a rotating arm frame, a pin shaft, a distance ring and a sliding bearing. The rotating arm frame is fixedly connected to the rotating shaft assembly. Pin shafts are passed through the two free ends of the rotating arm frame. A sliding bearing is provided at one end of the pin shaft away from the rotating arm frame. A distance ring is provided between the sliding bearing and the rotating arm frame.

[0011] As a preferred technical solution, the shift cylinder and the shift rod assembly are fixedly connected by bolts.

[0012] As a preferred technical solution, bearings are installed at both ends of the rotating shaft assembly.

[0013] As a further preferred technical solution, the lock lever assembly is provided with a lock lever operating handle. When the lock cylinder is damaged, the lock lever operating handle can be used to manually lock the block.

[0014] As a further preferred technical solution, the shift lever assembly is provided with a shift lever operating handle. When the shift cylinder is damaged, the shift lever operating handle can be used to manually shift gears.

[0015] The beneficial effects of the utility model are as follows:

[0016] This utility model discloses a gearbox shift lock mechanism. After the shift is completed, the lock cylinder drives the lock lever assembly into the gear lock hole of the shift lever assembly, fixing the shift lever assembly and locking the shift. This ensures that the gearbox does not shift out of gear after the shift, thereby ensuring the normal operation of the gearbox. At the same time, a shift lever operating handle and a lock lever operating handle are provided. If the cylinder is damaged, manual shifting and manual locking can be achieved without affecting the normal operation of the gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the gearbox shift locking mechanism according to an embodiment of the present utility model;

[0018] Figure 2 This is a side view of the shift lock mechanism according to an embodiment of the present utility model;

[0019] Figure 3 For this utility model Figure 1 A magnified view of part I;

[0020] Figure 4 This is a schematic structural diagram of a locking rod assembly according to an embodiment of the present utility model;

[0021] Figure 5This is a schematic structural diagram of a shift lever assembly according to an embodiment of the present utility model;

[0022] Among them, 1. Shift fork assembly; 101. Rotating arm frame; 102. Pin shaft; 103. Distance ring; 104. Sliding bearing; 2. Lock cylinder; 3. Lock lever assembly; 301. Lock lever operating handle; 4. Shift lever assembly; 401. Neutral locking hole; 402. Low gear locking hole; 403. High gear locking hole; 404. Shift lever operating handle; 5. Rotating shaft assembly; 6. Shift cylinder; 7. Low gear travel switch; 8. High gear travel switch; 9. Lock travel switch. DETAILED DESCRIPTION

[0023] In order to make the technical means, technical features, purpose of the utility model and technical effects achieved by the utility model easier to understand, the utility model is further explained below with reference to specific illustrations.

[0024] like Figure 1 and Figure 2 As shown, a gearbox shift lock mechanism according to this embodiment includes a shift lever assembly 4, a shift cylinder 6, a rotating shaft assembly 5, a shift fork assembly 1, a lock lever assembly 3, and a lock cylinder 2. Both the shift cylinder 6 and the lock cylinder 2 are mounted on the gearbox housing bracket. A low-range travel switch 7 and a high-range travel switch 8 are located on either side of the bottom of the shift lever assembly 4. A lock travel switch 9 is located on one side of the lock lever assembly 3.

[0025] The shift lever assembly 4 and the shift fork assembly 1 are fixedly connected to the two ends of the shaft assembly 5. The shaft assembly 5 is installed with bearings at both ends to rotate with the shift lever assembly 4. The shift fork assembly 1 is fixed to the shift gear sleeve of the gear box, driving the gear sleeve to move and complete the shift. Figure 3 As shown, the fork assembly 1 includes a rotating arm frame 101, a pin shaft 102, a distance ring 103 and a sliding bearing 104. The rotating arm frame 101 is fixedly connected to the rotating shaft assembly 5. The pin shaft 102 is passed through the two free ends of the rotating arm frame 101. The sliding bearing 104 is provided at the end of the pin shaft 102 away from the rotating arm frame 101. A distance ring 103 is provided between the sliding bearing 104 and the rotating arm frame 101.

[0026] like Figure 4 and Figure 5As shown, the shift lever assembly 4 is fixedly connected to the output end of the shift cylinder 6 via bolts. A gear locking hole is provided above the shift lever assembly 4. The gear locking holes include a neutral locking hole 401, a low gear locking hole 402, and a high gear locking hole 403, corresponding to locking the neutral, low gear, and high gear positions, respectively. The lock lever assembly 3 is connected to the output end of the lock cylinder 2 and can be adapted to plug into the gear locking holes. The lock lever assembly 3 and the shift lever assembly 4 are respectively provided with a lock lever operating handle 301 and a shift lever operating handle 404. If the lock cylinder 2 is damaged, the lock lever operating handle 301 can be used to manually lock the gear; if the shift cylinder 6 is damaged, the shift lever operating handle 404 can be used to manually shift gears.

[0027] Working Principle: When engaging low gear, the shift cylinder 6 is operated to extend its cylinder rod, driving the shift lever assembly 4 and the rotating shaft assembly 5 to rotate clockwise, thereby driving the shift fork assembly 1 to move rightward, and the gear sleeve engages low gear. After the gear is shifted into place, the shift lever assembly 4 triggers the low gear travel switch 7, which sends a shift-in-place signal to prompt the operator. Then, the lock cylinder 2 is operated to extend its cylinder rod and the lock lever assembly 3 into the low gear locking hole 402, fixing the shift lever assembly 4 to lock the gear. The lock lever assembly 3 triggers the lock travel switch 9, which sends a gear lock signal to prompt the operator to lock the gear. When shifting again, the lock cylinder 2 is first operated to retract its cylinder rod and the lock lever assembly 3 to unlock the gear, and then the shift operation is carried out again.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. In other words, any equivalent changes and modifications made within the scope of the present invention's patent application should fall within the technical scope of the present invention.

Claims

1. A gearbox shift locking mechanism, comprising a shift lever assembly (4), a rotating shaft assembly (5), and a shift fork assembly (1), wherein the shift lever assembly (4) and the shift fork assembly (1) are fixedly connected to both ends of the rotating shaft assembly (5), respectively, and characterized in that: The invention also includes a shift cylinder (6), a locking lever assembly (3) and a locking cylinder (2), wherein the shift lever assembly (4) is fixedly connected to the output end of the shift cylinder (6), a gear locking hole is provided above the shift lever assembly (4), the locking lever assembly (3) is connected to the output end of the locking cylinder (2), and the locking lever assembly (3) can be adapted and plugged into the gear locking hole.

2. A gearbox shift locking mechanism according to claim 1, characterized in that: The gear locking holes include a neutral gear locking hole (401), a low gear locking hole (402) and a high gear locking hole (403).

3. The gearbox shift locking mechanism according to claim 2, characterized in that: A low gear travel switch (7) and a high gear travel switch (8) are respectively provided on both sides of the bottom of the shift lever assembly (4).

4. The gearbox shift locking mechanism according to claim 1, characterized in that: A locking travel switch (9) is provided on one side of the locking lever assembly (3).

5. The gearbox shift locking mechanism according to claim 1, characterized in that: The shift fork assembly (1) comprises a rotating arm frame (101), a pin shaft (102), a distance ring (103) and a sliding bearing (104); the rotating arm frame (101) is fixedly connected to the rotating shaft assembly (5); the pin shafts (102) are passed through the two free ends of the rotating arm frame (101); a sliding bearing (104) is provided at one end of the pin shaft (102) away from the rotating arm frame (101); and a distance ring (103) is provided between the sliding bearing (104) and the rotating arm frame (101).

6. The gearbox shift locking mechanism according to claim 1, characterized in that: The shift cylinder (6) is fixedly connected to the shift rod assembly (4) via bolts.

7. The gearbox shift locking mechanism according to claim 1, characterized in that: Bearings are installed at both ends of the rotating shaft assembly (5).

8. A gearbox shift locking mechanism according to any one of claims 1 to 7, characterized in that: The locking lever assembly (3) is provided with a locking lever operating handle (301).

9. The gearbox shift locking mechanism according to claim 8, characterized in that: The shift lever assembly (4) is provided with a shift lever operating handle (404).

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