Multi-gear control mechanism and light road roller

Abstract

The invention discloses a multi-gear control mechanism and a light road roller. The control mechanism comprises a control platform, a transmission shaft connected to the lower portion of the control platform, a flexible shaft support and an operation handle connected to the end of the transmission shaft; a gear shifting piece and a flexible shaft shifting piece for controlling the flow of a plunger pump are arranged on the transmission shaft; a step plate is connected to the flexible shaft support, a middle-position groove is formed in the step plate, first-stage steps and second-stage steps are arranged on the two sides of the middle-position groove, and the first-stage steps are located between the second-stage steps and the middle-position groove; and the operation handle enables the gear shifting piece to be located in the middle-position groove or the first-stage steps or the second-stage steps through the transmission shaft, when the gear shifting piece is located in the middle-position groove, the flexible shaft shifting piece enables the flow of the plunger pump to be zero, and when the gear shifting piece moves from the first-stage steps to the second-stage steps, the flexible shaft shifting piece enables the flow of the plunger pump to be gradually increased. According to the multi-gear control mechanism and the light road roller, the vehicle speed can be conveniently controlled, and sudden increase of the vehicle speed caused by misoperation of the handle can be prevented.

Description

technical field [0001] The invention relates to the technical field of road rollers, in particular to a multi-gear operating mechanism and a light road roller. Background technique [0002] The full hydraulic road roller realizes the stepless adjustment of the walking speed by changing the flow rate of the plunger pump. The technical route is to use the operating handle to control the stretching of the flexible shaft rope. The flexible shaft rope is connected to the flow crank arm on the plunger pump. Proportional to walking speed. The construction speed of the road roller is generally 3~5km / h, and a higher speed is required when the site is moved by itself. The medium and large tonnage road rollers generally use the plunger pump to match the variable motor to achieve multi-speed control; for light road rollers, the variable motor can be selected There are fewer components and high cost. Generally, a plunger pump is used to match a fixed-quantity motor. As a result, the veh...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-gear control mechanism and a light road roller to solve the problem of using a plunger pump to match a fixed-quantity motor in the prior art, resulting in a vehicle speed that can only The stepless adjustment between minimum and maximum is not conducive to the needs of construction work, and at the same time there is a safety hazard that the speed of the vehicle will change suddenly due to misoperation of the handle

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