CN-122010019-A - Quick-change connecting device of telescopic boom forklift

CN122010019ACN 122010019 ACN122010019 ACN 122010019ACN-122010019-A

Abstract

The invention discloses a quick-change connecting device of a telescopic arm forklift, which comprises a quick-change vertical plate, a rocker arm, a connecting rod arm, an anti-rotation component, a leveling oil cylinder, a first rotating shaft, a second rotating shaft and a third rotating shaft, wherein one end of the rocker arm is hinged with an arm frame of the telescopic arm through the first rotating shaft, the other end of the rocker arm is hinged with one end of the connecting rod arm through the second rotating shaft, the other end of the connecting rod arm is hinged with the quick-change vertical plate through the third rotating shaft to form a triple-link transmission structure, the anti-rotation component is limited in the middle of the rocker arm, the output end of the leveling oil cylinder is connected with the anti-rotation component, and the rocker arm is driven to rotate around the first rotating shaft through the telescopic driving of the leveling oil cylinder, so that the connecting rod arm and the quick-change vertical plate are driven to rotate around the third rotating shaft to adjust the inclination angle of an accessory on the quick-change vertical plate. The invention greatly improves the rotation angles of integral quick-change forward tilting and backward tilting, greatly improves the working rotation range of the accessories arranged on the quick-change structure, greatly improves the working condition of the whole vehicle and improves the performance of the whole vehicle.

Inventors

MA XIANGYANG
MENG YUAN
TIE XIAOCHUN
ZHANG HONGLIANG
YANG MENG
WANG WENQING
ZHANG XIAOKUI
WANG XIAOCHEN

Assignees

太原重工股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260212

Claims (7)

1. The quick-change connecting device of the telescopic boom forklift is mounted on a telescopic boom arm frame and is characterized by comprising a quick-change vertical plate, a rocker arm, a connecting rod arm, an anti-rotation component, a leveling cylinder, a first rotating shaft, a second rotating shaft and a third rotating shaft, wherein one end of the rocker arm is hinged with the telescopic boom arm frame through the first rotating shaft, the other end of the rocker arm is hinged with one end of the connecting rod arm through the second rotating shaft, the other end of the connecting rod arm is hinged with the quick-change vertical plate through the third rotating shaft to form a three-link transmission structure, the anti-rotation component is limited in the middle of the rocker arm, the leveling cylinder is mounted on the telescopic boom arm frame, the output end of the leveling cylinder is connected with the anti-rotation component, and the rocker arm is driven to rotate around the first rotating shaft through the expansion of the leveling cylinder, so that the connecting rod arm and the quick-change vertical plate are driven to rotate around the third rotating shaft to adjust the inclination angle of an accessory on the quick-change vertical plate; The anti-rotation assembly comprises a connecting shaft, a connecting plate, a limiting table and a clamp spring, wherein the connecting plate is welded at one end of the connecting shaft, the limiting table is welded at one side of the connecting plate, which is close to the connecting shaft, and is used for limiting the connecting shaft axially, and the clamp spring is arranged at the tail end of the connecting shaft and is used for limiting the connecting shaft radially.
2. The telescopic boom forklift quick-change connecting device according to claim 1, wherein the rocker arm is arranged in a C-shaped box type structure, a first connecting shaft hole and a second connecting shaft hole are formed in two ends of the rocker arm, copper sleeve oil channels are sleeved in the first connecting shaft hole and the second connecting shaft hole, and oil cups communicated with the copper sleeve oil channels are assembled on the copper sleeve oil channels.
3. The telescopic boom forklift quick change connection device of claim 2, wherein said first rotation shaft is hinged to said link arm through said first connection shaft hole, and said second rotation shaft is hinged to said link arm through said second connection shaft hole.
4. The quick-change connecting device of the telescopic forklift truck according to claim 1, wherein a mounting hole is formed in the middle of the rocker arm, a limiting hole is formed in one side, close to the mounting hole, of the rocker arm, the mounting hole is matched with the connecting shaft, the connecting shaft penetrates through the mounting hole to be radially limited through the clamping spring, the limiting hole is matched with the limiting table, and the limiting table is clamped into the limiting hole to axially limit the connecting shaft.
5. The quick-change connecting device of the telescopic boom forklift truck according to claim 1, wherein the connecting rod arm is of an integrally formed rigid structure, and two ends of the connecting rod arm are respectively provided with hinge holes matched with the second rotating shaft and the third rotating shaft.
6. The quick change connection device of a telescopic boom forklift of claim 1, wherein the first, second and third rotating shafts are each fitted with wear resistant bushings that are interference fit with corresponding hinge members to reduce kinematic wear.
7. The quick-change connecting device of the telescopic forklift truck according to claim 1, wherein the quick-change vertical plate is of a box structure, a plurality of connecting holes for adapting to accessories of different specifications are formed in the quick-change vertical plate, the aperture and the distribution of the connecting holes correspond to the connecting structure of commonly used operation accessories, and quick-change adaptation of multiple accessories is achieved.

Description

Quick-change connecting device of telescopic boom forklift Technical Field The invention belongs to the technical field of forklifts, and particularly relates to a quick-change connecting device of a telescopic boom forklift. Background As shown in fig. 1, the attachment connection structure of the conventional telescopic boom forklift adopts a single-shaft connection design, a quick-change component is directly and fixedly connected to a telescopic boom frame through a fixed shaft 100, is connected with a leveling cylinder through a cylinder connection shaft 200, is connected with an attachment through an attachment connection shaft 300, and controls the rotation angle of the attachment only by means of unidirectional expansion and contraction of the leveling cylinder. The structure has the defects that firstly, the front and rear rotation angle range of the accessory is narrow due to a single connection mode, the oil cylinder can only stretch unidirectionally and cannot meet the requirement of various inclination angles of complex operation scenes, secondly, the structure is simple in design, a special limiting anti-rotation component is lacked, axial rotation and radial movement are easy to occur in the operation process, the stability is poor, potential safety hazards exist, thirdly, a quick-change component adopts a welding shaft type, only the accessory with single specification can be adapted, the universality is extremely low, the expansion of the operation function of a forklift is limited, the market diversified application requirements cannot be met, fourthly, the hinge part is lacked in effective lubrication structure and wear-resistant design, the movement wear is serious, the service life is short, and the maintenance cost is high. Therefore, there is a need for a quick-change coupling device that expands the range of tilt angle adjustment, improves the fit of the accessory, enhances structural stability, and reduces wear. Disclosure of Invention In order to at least partially solve the technical problems in the prior art, the invention provides a quick-change connecting device of a telescopic boom forklift. The quick-change connecting device of the telescopic boom forklift comprises a quick-change vertical plate, a rocker arm, a connecting rod arm, an anti-rotation component, a leveling cylinder, a first rotating shaft, a second rotating shaft and a third rotating shaft, wherein one end of the rocker arm is hinged with the telescopic boom arm frame through the first rotating shaft, the other end of the rocker arm is hinged with one end of the connecting rod arm through the second rotating shaft, the other end of the connecting rod arm is hinged with the quick-change vertical plate through the third rotating shaft to form a three-link transmission structure, the anti-rotation component is limited in the middle of the rocker arm, the leveling cylinder is arranged on the telescopic boom arm frame, the output end of the leveling cylinder is connected with the anti-rotation component, the rocker arm is driven to rotate around the first rotating shaft through the expansion of the leveling cylinder, and then the connecting rod arm and the quick-change vertical plate are driven to rotate around the third rotating shaft, and the inclination angle of an accessory on the quick-change vertical plate is adjusted The anti-rotation assembly comprises a connecting shaft, a connecting plate, a limiting table and a clamp spring, wherein the connecting plate is welded at one end of the connecting shaft, the limiting table is welded at one side of the connecting plate, which is close to the connecting shaft, and is used for limiting the connecting shaft axially, and the clamp spring is arranged at the tail end of the connecting shaft and is used for limiting the connecting shaft radially. Further, in the quick-change connecting device of the telescopic forklift truck, the rocker is in a C-shaped box type structure, a first connecting shaft hole and a second connecting shaft hole are formed in two ends of the rocker, the first connecting shaft hole and the second connecting shaft hole are sleeved with copper bush oil channels, and an oil cup communicated with the copper bush oil channels is arranged on the copper bush oil channels. Further, in the quick-change connecting device for the telescopic arm forklift, the first rotating shaft penetrates through the first connecting shaft hole to be hinged with the connecting rod arm, and the second rotating shaft penetrates through the second connecting shaft hole to be hinged with the connecting rod arm. Further, in the quick-change connecting device for the telescopic forklift, the mounting hole is formed in the middle of the rocker arm, the limiting hole is formed in one side, close to the mounting hole, of the rocker arm, the mounting hole is matched with the connecting shaft, the connecting shaft penetrates through the mounting hole and is radially limited by the cl