CN-224226614-U - Working bucket leveling mechanism of overhead working truck

CN224226614UCN 224226614 UCN224226614 UCN 224226614UCN-224226614-U

Abstract

The application relates to the technical field of leveling of working vehicles and discloses a working bucket leveling mechanism of an overhead working truck, which comprises a four-bar mechanism, wherein the four-bar mechanism is positioned between a chassis and a working bucket of the overhead working truck, the four-bar mechanism comprises a pair of mounting rods which are parallel to each other, the chassis and the working bucket of the overhead working truck are fixed with the four-bar mechanism through the mounting rods, a protective cover is arranged at an oil filling hole on the four-bar mechanism, the protective cover is in rotary fit with the four-bar mechanism, and a reset component is arranged between the protective cover and the four-bar mechanism. The application has the effect of reducing the possibility of dust adhering to the oil filling hole.

Inventors

ZHANG CHAO
GU YUN
CHEN CONG
ZHU LIAN

Assignees

无锡格润迈技术有限公司

Dates

Publication Date: 20260512
Application Date: 20250510

Claims (8)

1. The working bucket leveling mechanism of the overhead working truck is characterized by comprising a four-bar mechanism, wherein: The four-bar linkage mechanism is positioned between the chassis of the overhead working truck and the working bucket; The four-bar linkage mechanism comprises a pair of mounting bars which are parallel to each other; The chassis and the working bucket of the overhead working truck are fixed with the four-bar mechanism through a mounting rod; a protective cover is arranged at the oil injection hole on the four-bar mechanism; The protective cover is in running fit with the four-bar mechanism; and a reset component is arranged between the protective cover and the four-bar mechanism.
2. The aerial work vehicle work bucket leveling mechanism of claim 1, wherein: A first ring body is arranged at the oil filling hole; The protective cover is arranged on the first ring body; A protection space is formed among the four-bar linkage, the first ring body and the protection cover; The oil filling hole is positioned in the protection space.
3. The aerial work vehicle work bucket leveling mechanism of claim 2, wherein: A plugging groove is formed in the side wall of the first ring body; the protective cover is in plug-in connection with the plug-in groove.
4. A work car work bucket leveling mechanism in accordance with claim 3 wherein: The inserting groove divides the first ring body into a first clamping ring and a second clamping ring; The first clamping ring and the second clamping ring are respectively provided with a second ring body; the second ring body and the first ring body relatively move along the axial direction.
5. The aerial work vehicle work bucket leveling mechanism of claim 4, wherein: A positioning ring is arranged on one side of the second ring body, which is close to the inserting groove; the protective cover is provided with a positioning groove; the positioning ring is in plug-in fit with the positioning groove.
6. The aerial work vehicle work bucket leveling mechanism of claim 4, wherein: a first reset spring is arranged between the second ring body and the first clamping ring.
7. The aerial work vehicle work bucket leveling mechanism of claim 1, wherein: the reset assembly includes mount pad and second reset spring, wherein: The mounting seat is arranged on the four-bar mechanism; one end of the second reset spring is arranged on the mounting seat; The other end of the second reset spring is arranged on the protective cover.
8. The aerial work vehicle work bucket leveling mechanism of claim 7, wherein: The protective cover is provided with a deflector rod.

Description

Working bucket leveling mechanism of overhead working truck Technical Field The application relates to the technical field of leveling of working vehicles, in particular to a working bucket leveling mechanism of an overhead working truck. Background An overhead working truck is a special machine that can raise and lower personnel or equipment to a specific height for overhead working. The leveling mechanism plays an important role in maintaining the horizontal state of the operation platform under different operation environments. The leveling mechanism is generally mounted between and connected to the chassis of the overhead working truck and the work bucket. Currently, most overhead working vehicles employ a four bar linkage as a leveling mechanism. In order to ensure smooth operation of the four-bar linkage, an oil injection hole is generally arranged at the revolute pair part of the four-bar linkage. When a worker maintains the four-bar linkage mechanism, lubricating oil can be injected through the oil injection hole, so that friction and abrasion are reduced, and the normal operation of the mechanism is ensured. However, there is a problem in practical use that the oil filling hole is exposed to the outside for a long period of time, and dust in the air is easily attached to the surroundings thereof. When the oil is filled through the oil filling hole, the dust possibly enters the four-bar mechanism, so that the lubrication effect is affected, and the operation efficiency and the service life of the mechanism are reduced. Disclosure of utility model In order to reduce the possibility of dust adhesion at the oil filling hole, the application provides a working bucket leveling mechanism of an overhead working truck. The application provides a working bucket leveling mechanism of an overhead working truck, which adopts the following technical scheme: A working bucket leveling mechanism of an overhead working truck, comprising a four-bar linkage, wherein: The four-bar linkage mechanism is positioned between the chassis of the overhead working truck and the working bucket; The four-bar linkage mechanism comprises a pair of mounting bars which are parallel to each other; The chassis and the working bucket of the overhead working truck are fixed with the four-bar mechanism through a mounting rod; a protective cover is arranged at the oil injection hole on the four-bar mechanism; The protective cover is in running fit with the four-bar mechanism; and a reset component is arranged between the protective cover and the four-bar mechanism. Optionally, a first ring body is arranged at the oil filling hole; The protective cover is arranged on the first ring body; A protection space is formed among the four-bar linkage, the first ring body and the protection cover; The oil filling hole is positioned in the protection space. Optionally, a plugging groove is formed in the side wall of the first ring body; the protective cover is in plug-in connection with the plug-in groove. Optionally, the plugging groove divides the first ring body into a first clamping ring and a second clamping ring; The first clamping ring and the second clamping ring are respectively provided with a second ring body; the second ring body and the first ring body relatively move along the axial direction. Optionally, a positioning ring is arranged on one side of the second ring body, which is close to the inserting groove; the protective cover is provided with a positioning groove; the positioning ring is in plug-in fit with the positioning groove. Optionally, a first return spring is arranged between the second ring body and the first clamping ring. Optionally, the reset assembly includes a mount and a second reset spring, wherein: The mounting seat is arranged on the four-bar mechanism; one end of the second reset spring is arranged on the mounting seat; The other end of the second reset spring is arranged on the protective cover. Optionally, a deflector rod is arranged on the protective cover. In summary, the present application includes at least one of the following beneficial technical effects: 1. The parallelogram structure of the four-bar mechanism can automatically adjust the level of the working bucket, ensure the stability of the working bucket and improve the safety and the efficiency of the operation. The structure can keep the working hopper horizontal at different working positions, is suitable for various working conditions, and reduces potential safety hazards and inconvenient operation caused by inclination; 2. The protective cover at the oil filling hole is matched with the reset component, so that impurities such as dust can be effectively isolated, the influence of the impurities on lubrication and operation of the mechanism is reduced, and the service life of the mechanism is prolonged. The reset assembly can automatically reset the protective cover after oiling, so that the condition that an operator forgets to close the prote