Road roller gearbox applying gear shifting booster

Abstract

The road roller gearbox comprises a gearbox body, a gear shifting arm, the gear shifting booster, a gear shifting fork and a gear shifting shaft assembly, the gear shifting arm is connected with the gear shifting device through an inhaul cable, the gear shifting arm is fixed to the gear shifting booster, the gear shifting arm is matched with a swing mechanism in the gear shifting booster, and the gear shifting booster is arranged on the gear shifting fork. A gear shifting fork is installed in the upper cover through a gear shifting fork shaft, and a gear shifting shaft assembly is installed in the top cover and connected with a gear shifting block through an involute spline. The gear shifting booster is a mechanism for assisting a driver in completing gear shifting and can help the driver to reduce gear shifting force, so that gear shifting is faster, more stable and more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of road roller gearboxes, in particular to a road roller gearbox using a gear shift booster. Background Art

[0002] The gearbox shift control system converts the driver's shifting intention into the extension or compression of the gear selection and shift cables through the handle, and converts the gear selection rocker arm and gear shift rocker arm connected to the cables into the driving angle and swing angle of the shift fork, thereby realizing the gear selection and shifting action. The shifting torque inside the gearbox is much larger than the gear selection torque, that is, the maximum driving force of the driver on the shift handle is the shifting force. Due to the characteristics of the engineering roller gearbox itself, it is very difficult to achieve the purpose of reducing the shifting force through optimized design.

[0003] In the current application field of roller gearboxes, mechanical roller gearboxes are used. This gearbox is a heavy-duty gearbox with a relatively large shifting torque. The operating characteristic of a roller is that the vehicle travels back and forth during construction, so gear shifting is frequent and the labor intensity of the driver is high. Utility Model Content

[0004] In order to solve the problems existing in the prior art in the above-mentioned background technology, the utility model matches and applies a gear shift booster on the mechanical gearbox of the road roller to reduce the gear shifting force. After adding the gear shift booster to the gearbox, it can assist the driver to complete the gear shifting of the gearbox. Since the assistance of the gear shift booster reduces the force required by the driver to drive the gearbox, the driver's gear shifting experience is significantly improved.

[0005] The utility model provides the following technical solutions:

[0006] A road roller gearbox using a shift booster comprises a gearbox, a shift arm, a shift booster, a shift fork and a shift shaft assembly, wherein the shift arm is connected to the shifter via a cable, the shift arm is fixed to the shift booster, the shift arm cooperates with a swing mechanism inside the shift booster, the shift fork is installed inside an upper cover via a shift fork shaft, and the shift shaft assembly is installed inside the top cover and connected to a shift dial head via an involute spline.

[0007] Preferably, the shift booster is mounted on the top cover by connecting the transition plate, the top cover is mounted on the upper cover by positioning pins and bolts, and the upper cover is located on the top of the gearbox.

[0008] Preferably, the shift arm is fixed to the spline shaft of the shift booster by a locking bolt.

[0009] Preferably, the shift fork is installed inside the upper cover via the shift fork shaft.

[0010] Preferably, a neutral signal switch, a gear selection arm and a gear selection shaft assembly are also mounted on the top cover.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model adopts matching and applying a shift booster on the mechanical gearbox of the road roller to reduce the shift force and improve the shift comfort. The shift booster is a mechanism for assisting the driver to complete the gear shift, which can help the driver reduce the shift force and make the gear shift faster, smoother and more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the installation structure of the gear shift booster in the utility model.

[0015] In the above drawings, 1-shift arm, 2-shift booster, 3-swing mechanism, 4-connecting transition plate, 5-shift shaft assembly, 6-top cover, 7-neutral signal switch, 8-shift arm, 9-shift shaft assembly, 10-shift dial head, 11-speed fork, 12-speed fork shaft, 13-top cover, 14-intake joint, 15-piston rod, 16-air pressure boost valve DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0017] like Figure 1-2 As shown, the utility model provides a roller gearbox using a shift booster, which belongs to the field of engineering machinery roller gearboxes, including a shift arm 1, a shift booster 2, a swing mechanism 3, a connecting transition plate 4, a shift shaft assembly 5, a top cover 6, a neutral signal switch 7, a shift arm 8, a shift shaft assembly 9, a shift dial head 10, a shift fork 11, a shift fork shaft 12, an upper cover 13, an air intake joint 14, a piston rod 15 and a pneumatic booster valve 16.

[0018] The shift booster 2 is installed on the top cover 6 by connecting the transition plate 4. The top cover 6 is installed on the upper cover 13 by locating pins and bolts. The upper cover 13 is located on the top of the gearbox. The shift arm 1 is fixed to the spline shaft of the shift booster 2 by locking bolts. The shift fork 11 is installed in the upper cover 13 through the shift fork shaft 12. The shift shaft assembly 5 is installed inside the top cover 6 and connected to the shift dial head 10 through an involute spline.

[0019] A neutral signal switch 7, a gear selection arm 8 and a gear selection shaft assembly 9 are also mounted on the top cover 6. The neutral signal switch 7 can disconnect the start circuit when the vehicle forgets to shift gears, so as to prevent accidents from occurring during the operation of the starter. The gear selection arm 8 and the gear selection shaft assembly 9 can rotate the gear selection shaft 9 through the gear selection arm 8 to select the gear position.

[0020] The shift booster 2 is connected to the vehicle-mounted air source pipeline on the press through the air inlet joint 14 to access the air source. When the driver changes gears, he drives the handle on the shifter, and the shift arm 1 swings through the cable. While the shift arm 1 swings, it drives the swing mechanism 3 to open the air pressure booster valve 16 on the shift booster 2. The air pressure assist enters the cylinder and promotes the shift shaft assembly 5 to rotate through the piston rod. At this time, the shift head 10 installed on the shift shaft assembly 5 will drive the shift fork 11 to move. After moving into place, the air pressure booster valve 16 is closed and the action stops, thereby realizing the meshing of the gears inside the gearbox to complete the gear shifting action of the gearbox.

[0021] In the current application field of roller gearbox, a mechanical roller gearbox is used. This gearbox is a heavy-duty gearbox with a relatively large shifting torque. The operating characteristic of a roller is that the vehicle travels back and forth during construction, so the gear shifting is frequent and the labor intensity of the driver is high. After adding a gear shift booster to the gearbox, it can assist the driver in completing the gear shifting of the gearbox. Since the assistance of the gear shift booster reduces the force required by the driver to drive the gearbox, the driver's gear shifting experience is significantly improved. The installation structure of the gear shift booster in the utility model is simple, easy to operate, and can reduce production costs.

Claims

1. A road roller gearbox using a gear shift booster, characterized in that: The invention comprises a gearbox, a shift arm (1), a shift booster (2), a shift fork (11) and a shift shaft assembly (5), wherein the shift arm (1) is connected to the shifter via a cable, the shift arm (1) is fixed on the shift booster (2), the shift arm (1) cooperates with a swing mechanism inside the shift booster, the shift fork (11) is installed inside an upper cover (13) via a shift fork shaft (12), and the shift shaft assembly (5) is installed inside a top cover (6) and connected to a shift dial head via an involute spline.

2. A road roller gearbox using a shift booster according to claim 1, characterized in that: The gear shift booster (2) is mounted on the top cover (6) by connecting the transition plate (4), and the top cover (6) is mounted on the upper cover (13) by means of positioning pins and bolts. The upper cover (13) is located on the top of the gearbox.

3. The roller gearbox using a gear shift booster according to claim 1, characterized in that: The shift arm (1) is fixed on the spline shaft of the shift booster (2) by means of a locking bolt.

4. A road roller gearbox using a shift booster according to claim 1, characterized in that: The speed change fork (11) is installed inside the upper cover (13) via the speed change fork shaft (12).

5. The roller gearbox using a shift booster according to claim 1, characterized in that: A neutral signal switch (7), a gear selection arm (8) and a gear selection shaft assembly (9) are also arranged on the top cover (6).

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