CN210737637U

CN210737637U - Connecting rod mechanism of loader

Info

Publication number: CN210737637U
Application number: CN201921104992.7U
Authority: CN
Inventors: 赵云峰; 钱珍宝; 花豪; 丁亮; 汪琰; 刘巧珍; 王海庭; 周良稷
Original assignee: Jiangsu Liugong Machinery Co Ltd
Current assignee: Liugong Changzhou Machinery Co Ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-06-12
Anticipated expiration: 2029-07-16

Abstract

The patent discloses a connecting rod mechanism of a loader, which is symmetrically arranged on two sides of a frame and comprises a rocker arm, a movable arm and a pull rod; the rocker arm is hinged with the frame at a point O and is hinged with the movable arm at a point A; the connecting point of the movable arm and the accessory tool is a point B; the pull rod is hinged with the frame at a point L and is hinged with the movable arm at a point K; the front of the frame is the working end of the whole machine and the end where the accessory tool is located. The points are sequentially a point B, a point L, a point K, a point O and a point A from bottom to top in the Y-axis direction; the points are sequentially an O point, an A point, a K point, an L point and a B point in the positive direction of the X axis. The link mechanism has compact structure, effectively improves the unloading height and the unloading distance, has excellent lifting track and fully exerts the positive effect of the pull rod.

Description

Connecting rod mechanism of loader

Technical Field

The utility model relates to a link mechanism, especially the link mechanism that the loader is used for lifting belongs to engineering machine tool technical field.

Background

The loader is an engineering machine with transshipment and transportation functions, the unloading height, the unloading distance and the digging force are all very important technical parameters for embodying the performance of the loader, the parameters have great relation with the mutual position relation of the hinge points of the working devices, and different unloading heights, unloading distances and digging forces can be caused by different point position relations and size proportions. The point-to-point relationship of the loader working device is described in patent nos. ZL201110131022.8, ZL201420680424.2, ZL201520467789.1 and ZL201620562983.2, but there are some or all of these or other disadvantages, such as difficulty in placing and manufacturing the telescopic cylinder, low stability, limited lifting of the unloading height and unloading distance, and failure to effectively exert the performance of the cylinder.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome the shortcoming that above-mentioned prior art exists and propose, it aims at providing a compact structure, when improving uninstallation height, uninstallation distance, can effectively exert the hydro-cylinder performance, lift the good link mechanism of orbit.

The technical scheme is as follows: a loader connecting rod mechanism is symmetrically arranged on two sides of a frame and comprises a rocker arm, a movable arm and a pull rod; the rocker arm is hinged with the frame at a point O and is hinged with the movable arm at a point A; the connecting point of the movable arm and the accessory tool is a point B; the pull rod is hinged with the frame at a point L and is hinged with the movable arm at a point K; the front of the frame is the working end of the whole machine and the end where the accessory tool is located. Setting the point O as an original point, setting the positive direction of the X axis from the point O to the front of the frame, and setting the vertical direction of the point O as a Y axis; the points are sequentially a point B, a point L, a point K, a point O and a point A from bottom to top in the Y-axis direction; the points are sequentially an O point, an A point, a K point, an L point and a B point in the positive direction of the X axis; let the reference length be N, the distance OA between the points O and A, the distance AK between the points A and K, the distance KL between the points K and L, and the distance OA between the points A and B, then 402N is equal to or less than 0A and equal to or less than 702N, 1010N is equal to or less than AK and equal to or less than 1097N, 1018N is equal to or less than KL and equal to or less than 1211N, and 2565N is equal to or less than AB and equal to or less than 2814N.

Preferably, in order to facilitate the layout of the link mechanism, the coordinates of the point L relative to the point O are 1588. ltoreq. Lx.ltoreq.1800 in the X-axis direction, and the coordinate Ly is-556. ltoreq. Ly.ltoreq-503 in the Y-axis direction.

Preferably, for compactness of the layout of the link mechanism, the position of the point B of the link mechanism at the lowest point is an initial position, and when the link mechanism is at the initial position, the vertical distance from the point K to the point AB is greater than or equal to 488mm and less than or equal to 660 mm.

Preferably, in order to facilitate the lifting by the moment generated by the tie rod, when the link mechanism is in the initial position, the angle between KL and the X axis is greater than or equal to 117.46 degrees and less than or equal to 180 degrees.

Preferably, considering the unloading height, the unloading distance and the positive effect of the pull rod in combination, when the link mechanism is in the initial position, 0A =674mm, AK =1049mm, KL =1125mm, AB =2619mm, the coordinates of the point L with respect to the point O are (1778, -518), the perpendicular distance of the point K to the point AB is 619mm, and the angle of KL with the axis X is 179.76 °.

Preferably, considering the unloading height, the unloading distance and the positive effect of the pull rod, when the link mechanism is at the initial position, 0A =702mm, AK =1026mm, KL =1039mm, AB =2565mm, the coordinates of the L point relative to the O point are (1669, -528), the perpendicular distance of the K point to the AB is 660mm, and the angle of the KL to the X axis is 180 °.

Preferably, in order to further improve the application range of the link mechanism, the ratio of AK to OA is in the range of 1.46-2.65; the ratio of KL to OA is in the range of 1.48 to 2.93; the ratio of AB to OA is in the range of 3.65 to 6.95.

Has the advantages that: the link mechanism of this patent compact structure effectively improves uninstallation height, uninstallation distance, and the track of lifting is good, and the positive effect of pull rod obtains full play.

Drawings

FIG. 1 is a schematic structural diagram of a link mechanism according to the present patent;

FIG. 2 is a schematic diagram of a lifting trajectory of the link mechanism of this patent;

FIG. 3 is a schematic drawing of the pull rod performance of an embodiment of the present patent;

FIG. 4 is a schematic diagram illustrating the performance of a boom cylinder according to the embodiment of the present invention;

FIG. 5 is a schematic diagram of a lifting trajectory according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present patent more clear, the following detailed description of the present patent will be given with reference to the accompanying drawings and preferred embodiments, which are only for the purpose of illustrating the present patent and are not intended to limit the scope of the present patent.

As shown in fig. 1 and 2, a link mechanism of a loader is symmetrically arranged on two sides of a frame F, and comprises a rocker arm 1, a movable arm 2 and a pull rod 3; the rocker arm 1 is hinged with the frame 4 at a point O and is hinged with the movable arm 2 at a point A; the connecting point of the movable arm 2 and the accessory tool is a point B; the pull rod 3 is hinged with the frame 4 at a point L and is hinged with the movable arm 2 at a point K; the front of the frame 4 is the working end of the whole machine and the end where the accessory tool is located; and the hinged point of the movable arm oil cylinder and the frame 4 is an S point, and the hinged point of the movable arm oil cylinder and the movable arm 2 is an Q point. Setting the point O as the original point, setting the positive direction of the X axis from the point O to the front of the frame 4, and setting the vertical direction of the point O as the Y axis; the points are sequentially a point B, a point S, a point L, a point K, a point Q, a point O and a point A from bottom to top in the Y-axis direction; the points are sequentially an O point, an S point, an A point, a K point, a Q point, an L point and a B point in the positive direction of the X axis; let the reference length be N, the distance relationship among the points B, L, K, O and A is: 402N is not less than 0A not less than 702N, AK not less than 1010N not less than 1097N, KL not less than 1018N not less than 1211N, and AB not less than 2565N not less than 2814N. The coordinates of the L point relative to the O point are represented by Lx being more than or equal to 1588 and less than or equal to 1800 in the X-axis direction, and Ly being more than or equal to-556 and less than or equal to-503 in the Y-axis direction. When the link mechanism is at the initial position, the vertical distance from the point K to the point AB is greater than or equal to 488mm and less than or equal to 660 mm. When the link mechanism is at the initial position, the angle between the pull rod 3 in the KL direction and the positive direction of the X axis is more than or equal to 117.46 degrees and less than or equal to 180 degrees.

In order to increase the unloading height and the unloading distance and exert the positive effect of the pull rod 3, in the first embodiment, when the link mechanism is in the initial position, 0A =674mm, AK =1049mm, KL =1125mm, AB =2619mm, the coordinates of the point L relative to the point O are (1778, -518), the perpendicular distance from the point K to the point AB is 619mm, and the angle of the pull rod 3 in the KL direction and the positive direction of the X axis is 179.76 °. Second embodiment, when the link mechanism is at the initial position, 0A =702mm, AK =1026mm, KL =1039mm, AB =2565mm, the L point is (1669, -528) in relation to the O point, the K point is 660mm from the AB perpendicular, and the angle of the lever 3 in the KL direction from the positive direction of the X axis is 180 °. As shown in fig. 1, 3, 4 and 5, the mechanical property and the lifting track of the link mechanism are very good, the setting of the position of the O point can provide a large enough arm of force for the boom cylinder, and the pull rod 3 provides a resistance moment below a certain height and then provides a lifting moment. The ordinate in fig. 3 and 4 shows the effect of the force value generated at the point B by the boom cylinder and the tie rod E. The line No.1 in fig. 3, 4 and 5 represents the correlation performance of the first embodiment, and the line No.4 represents the correlation performance of the second embodiment.

Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that the embodiments may be modified or changed without departing from the spirit of the present invention, and still fall within the scope of the present invention.

Claims

1. A connecting rod mechanism of a loader is symmetrically arranged on two sides of a frame (4) and comprises a rocker arm (1), a movable arm (2) and a pull rod (3); the rocker arm (1) is hinged with the frame (4) at a point O and is hinged with the movable arm (2) at a point A; the connecting point of the movable arm (2) and the accessory tool is a point B; the pull rod (3) is hinged with the frame (4) at a point L and is hinged with the movable arm (2) at a point K; the method is characterized in that: the point O is taken as an original point, the forward direction from the point O to the front of the frame (4) is the positive direction of an X axis, and the vertical direction of the point O is a Y axis; the points are sequentially a point B, a point L, a point K, a point O and a point A from bottom to top in the Y-axis direction; the points are sequentially an O point, an A point, a K point, an L point and a B point in the positive direction of the X axis; the reference length is N, 402N is not less than 0A not more than 702N, AK not less than 1010N is not less than 1097N, 1018N is not less than KL not more than 1211N, and AB not less than 2565N is not less than 2814N.

2. The loader linkage as set forth in claim 1, wherein: the coordinates of the L point relative to the O point are represented by Lx which is more than or equal to 1588 and less than or equal to 1800 in the X-axis direction and Ly which is more than or equal to 556 and less than or equal to 503 in the Y-axis direction.

3. The loader linkage according to claim 2, wherein: when the link mechanism is at the initial position, the vertical distance from the point K to the point AB is greater than or equal to 488mm and less than or equal to 660 mm.

4. The loader linkage according to claim 3, wherein: when the connecting rod mechanism is at the initial position, the angle between the KL and the X axis is more than or equal to 117.46 degrees and less than or equal to 180 degrees.

5. The loader linkage according to claim 4, wherein: when the link mechanism is at the initial position, 0A =674mm, AK =1049mm, KL =1125mm, AB =2619mm, the coordinates of the point L with respect to the point O are (1778, -518), the perpendicular distance of the point K to the point AB is 619mm, and the angle of KL to the axis X is 179.76 °.

6. The loader linkage according to claim 4, wherein: 0A =702mm, AK =1026mm, KL =1039mm, AB =2565mm, the L point having coordinates (1669, -528) relative to the O point, the K point having a perpendicular distance to the AB of 660mm, the KL being at an angle of 180 ° to the X axis when the linkage is in the initial position.

7. A connecting rod mechanism of a loader is symmetrically arranged on two sides of a frame (4) and comprises a rocker arm (1), a movable arm (2) and a pull rod (3); the rocker arm (1) is hinged with the frame (4) at a point O and is hinged with the movable arm (2) at a point A; the connecting point of the movable arm (2) and the accessory tool is a point B; the pull rod (3) is hinged with the frame (4) at a point L and is hinged with the movable arm (2) at a point K; the method is characterized in that: the point O is taken as an original point, the forward direction from the point O to the front of the frame (4) is the positive direction of an X axis, and the vertical direction of the point O is a Y axis; the points are sequentially a point B, a point L, a point K, a point O and a point A from bottom to top in the Y-axis direction; the points are sequentially an O point, an A point, a K point, an L point and a B point in the positive direction of the X axis; the ratio of AK to OA is in the range of 1.46 to 2.65; the ratio of KL to OA is in the range of 1.48 to 2.93; the ratio of AB to OA is in the range of 3.65 to 6.95.