CN-121989674-A - Calibration accessory applied to power system of large-scale engineering vehicle

CN121989674ACN 121989674 ACN121989674 ACN 121989674ACN-121989674-A

Abstract

The application provides a calibration accessory applied to a power system of a large-scale industrial vehicle, which comprises a first connecting part, a second connecting part, a switching assembly and a control assembly, wherein the first connecting part is provided with a first end and a first installation part used for connecting a gearbox, the second connecting part is provided with a second end and a second installation part used for connecting an engine, the switching assembly is connected between the first end and the second end and used for adjusting the second connecting part to a target position relative to the first connecting part and locking the first connecting part by taking the first end as an adjusting reference, when the second connecting part is locked at the target position, the second connecting part is in a collinear state with the first connecting part, the interval between the first installation part and the second installation part is used for representing the interval distance between the engine and the gearbox, a bending included angle is formed between the second connecting part and the first connecting part, and the distance from the first installation part to the first end is equal to the distance from the second installation part to the first end, and the technical problems that the repeated adjustment is dependent on the repeated adjustment, the efficiency is low, the accuracy is difficult to guarantee the long-term in the assembling process are overcome.

Inventors

WANG XINYU
ZOU HAIBO
CAO WEIWEI
NI PENG
WANG XINXIN

Assignees

江西鑫通机械制造有限公司

Dates

Publication Date: 20260508
Application Date: 20260304

Claims (8)

1. A calibration accessory for use in a powertrain of a large industrial vehicle for determining a relative spatial position between an engine and a transmission, comprising: A first connecting member having a first mounting portion for connecting to the transmission case and a first end disposed opposite to the first mounting portion; A second connecting member having a second mounting portion for connecting the engine and a second end disposed opposite to the second mounting portion, and The switching component is connected between the first end and the second end and is used for adjusting the second connecting component to a target position relative to the first connecting piece by taking the first end as an adjusting reference and locking the second connecting component; Wherein, when the second connecting member is locked in the target position: The spacing between the first and second mounting portions is used to characterize the separation distance between the engine and the gearbox with the second and first connecting members in a collinear state; under the condition that a bending included angle is formed between the second connecting part and the first connecting part, the distance from the first mounting part to the first end is equal to the distance from the second mounting part to the first end.
2. The calibration attachment for use in a large industrial vehicle powertrain of claim 1, wherein the adapter assembly comprises: a third connecting member connected to the first end; A slider member coupled to the second end, the second connecting member rotatably coupled to the third connecting member through the slider member, and And the fastening component can be arranged between the sliding block component and the third connecting component in a penetrating way and is used for fixing the sliding block component to the third connecting component.
3. The calibration attachment for use in a large industrial vehicle powertrain of claim 2, wherein the number of third connecting members is two and oppositely disposed on either side of the first end; The third connecting member includes: A first connecting rod connected to the first end and extending in a direction perpendicular to the direction from the first mounting portion to the first end, the first connecting rod having a third end facing away from the first end, and And the third installation part is arranged at the third end and is used for being connected with the frame of the engineering vehicle through bolts.
4. A calibration attachment for use in a large industrial vehicle powertrain as claimed in claim 3, The number of the sliding block parts is two, and the sliding block parts and the two third connecting parts are arranged on the second ends in a one-to-one correspondence manner; the sliding block component is provided with a strip-shaped sliding groove; After the fastening part is removed, the sliding block part is sleeved on the corresponding first connecting rod through the strip-shaped sliding groove, so that the sliding block part can rotate on the corresponding first connecting rod and can be adjusted in a sliding mode, and a bending included angle and a distance between the second installation part and the first end are formed between the second connection part and the first connection part.
5. A calibration attachment for use in a large industrial vehicle powertrain as claimed in claim 4, The first connecting rod is of a cylindrical structure, and first jacks are circumferentially arranged on the radial side face of the first connecting rod; the sliding block part is provided with second jacks at two sides of the extending direction of the strip-shaped sliding groove; When the second connecting part is adjusted to the target position, the fastening part is jointly penetrated in the corresponding first jack and second jack in a threaded fit mode so as to lock the relative positions of the sliding block part and the first connecting rod.
6. The calibration attachment for use in a large industrial vehicle powertrain according to any one of claims 1-5, further comprising: and the fourth connecting part is arranged on the first connecting part and positioned between the first mounting part and the first end and is used for assisting in fixing the first connecting part.
7. The calibration attachment for use in a large industrial vehicle powertrain of claim 6, wherein the fourth connecting member comprises: A second connecting rod connected to the first connecting member and extending in a direction perpendicular to the direction from the first mounting portion to the first end, the second connecting rod having a fourth end facing away from the first connecting member, and And the fourth installation part is arranged at the fourth end and is used for being connected with the frame of the engineering vehicle through bolts.
8. A calibration attachment for use in a large industrial vehicle powertrain as claimed in claim 1, The cross sections of the first connecting part and the second connecting part are arc-shaped, so that a yielding space is formed at the same side of the first connecting part and the second connecting part respectively, and the yielding space is used for accommodating a transmission shaft between the engine and the gearbox.

Description

Calibration accessory applied to power system of large-scale engineering vehicle Technical Field The application relates to the technical field of large-scale engineering vehicles, in particular to a calibration accessory applied to a power system of a large-scale engineering vehicle. Background In the power system layout of large-scale industrial vehicles (such as mining dump trucks, heavy loaders and the like), in order to maximize the utilization of limited chassis space and meet the requirement of the compactness of the whole vehicle, a design scheme of relatively inclining an engine and a gearbox is often adopted. Specifically, the output end of the engine and the input end of the gearbox are not arranged on the same axis, but are arranged at a certain included angle, and are connected through a straight rod transmission shaft, and the two ends of the transmission shaft are respectively provided with a cross shaft universal joint so as to realize power transmission. However, due to the inherent kinematic characteristics of the cross-shaft universal joint, under the condition that an included angle exists between the input shaft and the output shaft, the output angular speed of the cross-shaft universal joint can show periodic fluctuation, namely when an inclined angle exists between the output end of the engine and the input end of the gearbox, even if the input end rotates at a uniform speed, the angular speed of the output end is not constant, and thus the phenomenon of non-uniform speed in the power transmission process is caused. The non-constant speed transmission not only can cause vibration and noise of a transmission system, but also can reduce the overall transmission efficiency, exacerbate the abrasion of parts and influence the running stability and reliability of the whole vehicle. To overcome the technical problems associated with the above-described differential speed transmission, the prior art generally employs a double-universal-joint constant-speed arrangement strategy. Specifically, two cross shaft universal joints are arranged on a transmission path between an engine output end and a gearbox input end, and through accurately adjusting the relative positions of the engine and the gearbox in a three-dimensional space, deflection angles corresponding to the two universal joints are equal, and fork joints at two ends of a middle transmission shaft are in the same plane. Under this condition, the angular velocity fluctuation generated by the former universal joint can be completely counteracted by the latter universal joint, so that the equiangular velocity transmission between the input shaft and the output shaft is realized. The method can effectively solve the problem of inconsistent angular velocity caused by single universal joint inclination arrangement in theory, remarkably improves the stability and efficiency of a transmission system, and is applied to part of high-end engineering vehicles. However, while the above-described double-universal joint constant velocity arrangement is theoretically possible, significant technical hurdles are still faced in practical engineering applications. Because the inclination angles of the engine and the gearbox are required to be strictly matched with the installation positions of the engine and the gearbox in space, a technical means capable of directly and accurately locking the target installation position of the engine or the gearbox according to the preset inclination angle is not available at present. In engineering practice, it is often necessary to try different combinations of relative positions continuously by means of repeated trial and error, measurement and fine adjustment until the double universal joint constant velocity condition is satisfied. The process is time-consuming and labor-consuming, severely restricts the whole vehicle assembly efficiency, is highly dependent on the assembly precision and the experience of operators, and is difficult to realize standardized and automatic production. Therefore, a technical solution capable of quickly and accurately determining the relative installation position of an engine and a gearbox based on a given inclination angle is needed to solve the problems of inconvenient arrangement and low efficiency existing in the current large-scale industrial vehicle power system layout. Disclosure of Invention The embodiment of the application provides a calibration accessory applied to a power system of a large-scale industrial vehicle, which solves the problem of non-constant speed transmission caused by oblique arrangement of an engine and a gearbox in the prior art, and solves the technical problems that repeated trial adjustment is relied on in the assembly process, the efficiency is low, the precision is difficult to ensure and the like are long in time, and the technical scheme is as follows: The embodiment of the application provides a calibration accessory applied to a power system of a l