Pointed auxiliary arm of truck-mounted crane

Abstract

The utility model relates to a truck-mounted crane pointed-end fly jib which comprises a telescopic main jib, an installation fly jib is installed in the telescopic main jib through a pin shaft, the interior of the installation fly jib is of a hollow structure, a traction groove is formed in the top of the installation fly jib, and a pointed-end fly jib mechanism is rotationally arranged at one end of the installation fly jib. And the vertical warping assembly is arranged in the mounting auxiliary arm. The telescopic end of the first hydraulic cylinder stretches out and draws back to push and pull the connecting arm, the connecting arm moves rightwards to pull the two middle hole vertical seesaws to deflect and swing rightwards through the mounting shaft, so that a first auxiliary arm and a second auxiliary arm in the auxiliary arm piece are driven to tilt upwards, otherwise, the connecting arm moves leftwards to push the two middle hole vertical seesaws to deflect and swing leftwards, and the two middle hole vertical seesaws are driven to deflect and swing leftwards. The orientation of the auxiliary arm part can be quickly and easily adjusted in the working and using period, the auxiliary arm part does not need to be disassembled and assembled by wasting a large amount of time, the working efficiency can be improved, and the working time can be shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to a crane mechanical arm technical field especially a sharp head auxiliary arm of truck crane. BACKGROUND

[0002] The truck crane (also known as truck crane or mobile crane) is a kind of hoisting equipment installed on the chassis of automobile, with good mobility and flexibility, it is mainly used for hoisting and carrying heavy objects in construction site, warehouse, wharf and other places, mainly used for hoisting heavy objects, loading and unloading goods, conveying and carrying, supporting construction and emergency rescue, the mechanical arm (also known as arm or jib) of crane is one of the most important components of crane, it is responsible for supporting load and used for hoisting and moving heavy objects.

[0003] Through the retrieval, the sharp head auxiliary arm of truck crane with publication number CN212532090U includes sharp head auxiliary arm, sharp head end, installation end, lifting hook, connecting hole pin shaft, telescopic arm and mounting hole pin shaft.The utility model has the beneficial effects that the sharp head end of sharp head auxiliary arm is provided with connecting hole, and the sharp head auxiliary arm is fixedly connected with the lifting hook through connecting hole pin shaft passing through the connecting hole of sharp head end, the installation end of sharp head auxiliary arm is provided with mounting hole, and the sharp head auxiliary arm is fixedly connected with telescopic arm through mounting hole pin shaft passing through the mounting hole of installation end, two hook tips in symmetrical shape are arranged on the lifting hook, multiple heavy objects can be lifted simultaneously, the sharp head auxiliary arm is inserted in the front end of telescopic arm to extend the length of arm cylinder, the safety distance of lifting hook and arm cylinder is lengthened, the sharp head end of sharp head auxiliary arm can be installed in the front end of telescopic arm upwards or downwards, and the upwards or downwards is selected according to actual working condition, the space between arm head and obstacle is effectively increased, and the hoisting space can be reduced, and it is suitable for some special working conditions.

[0004] The orientation of the sharp head auxiliary arm in the disclosed patent can only be changed by disassembling and reassembling the sharp head auxiliary arm, which affects the working efficiency of the crane and prolongs the working time. UTILITY MODEL CONTENTS

[0005] In view of the technical problems in the prior art that the orientation of the sharp head auxiliary arm of truck crane can only be changed by disassembling and reassembling the sharp head auxiliary arm, which affects the working efficiency of the crane and prolongs the working time, the utility model provides a sharp head auxiliary arm of truck crane.

[0006] The technical scheme adopted by the utility model is as follows:

[0007] The telescopic main arm is internally provided with a mounting auxiliary arm through a pin shaft, the inside of the mounting auxiliary arm is a hollow structure, a traction groove is formed in the top of the mounting auxiliary arm, and a sharp head auxiliary arm mechanism is rotatably arranged at one end of the mounting auxiliary arm.

[0008] A vertical lifting assembly is arranged inside the mounting auxiliary arm, comprising a first hydraulic cylinder, two middle-hole vertical lifting arms, a mounting shaft and a connecting arm, the first hydraulic cylinder is fixed inside the mounting auxiliary arm, the connecting arm is slid inside the traction groove, the two ends of the connecting arm are fixed with the telescopic end of the first hydraulic cylinder and the mounting shaft respectively, the mounting shaft is slid between the two middle-hole vertical lifting arms, and one end of the two middle-hole vertical lifting arms is rotatable on the two sides of the mounting auxiliary arm.

[0009] Preferably, the sharp auxiliary arm mechanism comprises an auxiliary arm member for lengthening the mechanical arm of the crane.

[0010] Preferably, the auxiliary arm member comprises a first auxiliary arm and a second auxiliary arm, one end of the second auxiliary arm is provided with a lifting hook, and one end of the two middle-hole vertical lifting arms is fixed to the two ends of the first auxiliary arm through a connecting shaft.

[0011] Preferably, the sharp auxiliary arm mechanism further comprises a telescopic member for changing the length of the first auxiliary arm and the second auxiliary arm.

[0012] Preferably, the telescopic member comprises a second hydraulic cylinder and two middle-hole traction plates, the second hydraulic cylinder is fixed inside the first auxiliary arm, the two middle-hole traction plates are fixed on the two sides of the first auxiliary arm respectively, a sliding column is slid between the interiors of the two middle-hole traction plates, the telescopic end of the second hydraulic cylinder is fixed to the exterior of the sliding column, two hollow push-pull columns are rotatable on the exterior of the sliding column, and two solid columns are rotatable in the interiors of the two hollow push-pull columns.

[0013] Preferably, two first vertical grooves are arranged on the exterior of the first auxiliary arm, two second vertical grooves are arranged on the exterior of the second auxiliary arm, one end of the two hollow push-pull columns and one end of the two solid columns are movably arranged in the interiors of the two first vertical grooves through sliding seats respectively, and the other end of the two hollow push-pull columns and the other end of the two solid columns are movably arranged in the interiors of the two second vertical grooves through sliding seats respectively.

[0014] Compared with the prior art, the first hydraulic cylinder telescopic end is telescopic to push and pull the connecting arm, the right movement of the connecting arm drives the two middle-hole vertical lifting plates to be right inclined and swing through the mounting shaft, thereby driving the first auxiliary arm and the second auxiliary arm in the auxiliary arm member to be upwardly lifted, on the contrary, the left movement of the connecting arm drives the two middle-hole vertical lifting plates to be left inclined and swing, thereby driving the first auxiliary arm and the second auxiliary arm in the auxiliary arm member to be downwardly dropped, the orientation of the auxiliary arm member can be quickly and easily adjusted during the working use, the auxiliary arm member does not need to be disassembled and assembled, which helps to improve the working efficiency and reduce the working time. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of a three-dimensional structure of the utility model;

[0016] Figure 2 is a partial sectional view of the utility model;

[0017] Figure 3 is a partial sectional view of the sharp head auxiliary arm mechanism in the utility model;

[0018] Figure 4 is Figure 3 enlarged schematic diagram of A part in the utility model.

[0019] In the figure, marked: 1, telescopic main arm; 2, installation auxiliary arm; 3, traction groove; 4, vertical and curved assembly; 41, first hydraulic cylinder; 42, middle hole vertical and curved arm; 43, mounting shaft; 44, connecting arm; 5, sharp head auxiliary arm mechanism; 51, first auxiliary arm; 52, second auxiliary arm; 53, lifting hook; 54, second hydraulic cylinder; 55, middle hole traction plate; 56, sliding column; 57, hollow push-pull column; 58, solid column; 59, first vertical groove; 510, second vertical groove. DETAILED DESCRIPTION

[0020] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "front", "upper", "lower", "left", "right", "vertical", "horizontal" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0021] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] The following will be combined with the drawings Figures 1-4 Further illustrate the utility model.

[0023] In order to solve the problems in the background art, the present application proposes the following technical scheme: a truck-mounted crane sharp head auxiliary arm.

[0024] In the specific technical solution, the telescopic main arm 1 is internally provided with the mounting auxiliary arm 2 through a pin shaft, the inside of the mounting auxiliary arm 2 is a hollow structure, and a mounting hole is formed in the mounting auxiliary arm 2, the pin shaft passes through the mounting hole to mount the mounting auxiliary arm 2 on the telescopic main arm 1, a traction groove 3 is formed at the top of the mounting auxiliary arm 2, the size of the traction groove 3 is matched with the size of the connecting arm 44, the traction groove 3 plays a certain guiding role on the connecting arm 44 to ensure the straight movement of the mounting shaft 43, and the mounting auxiliary arm 2 is rotatably provided with a pointed auxiliary arm mechanism 5 at one end.

[0025] The vertical and drooping assembly 4 is arranged in the inside of the mounting auxiliary arm 2, and the vertical and drooping assembly 4 comprises a first hydraulic cylinder 41, two middle-hole vertical and drooping arms 42, a mounting shaft 43 and a connecting arm 44. Figure 2 As shown in the figure, the connecting arm 44 is L-shaped, the two ends of the connecting arm 44 are respectively fixed with the telescopic end of the first hydraulic cylinder 41 and the mounting shaft 43, the mounting shaft 43 is slidably arranged between the two middle-hole vertical and drooping arms 42, when the mounting shaft 43 is pushed and pulled by the connecting arm 44, the position in the two middle-hole vertical and drooping arms 42 will be changed and the two middle-hole vertical and drooping arms 42 will be driven to swing at a certain angle at the rotation point, and one end of each of the two middle-hole vertical and drooping arms 42 is rotatably arranged at the two sides of the mounting auxiliary arm 2.

[0026] The pointed auxiliary arm mechanism 5 comprises an auxiliary arm piece for lengthening the mechanical arm of the crane, the auxiliary arm piece comprises a first auxiliary arm 51 and a second auxiliary arm 52, one end of the second auxiliary arm 52 is provided with a lifting hook 53 for carrying, connecting and fixing the heavy object to be hoisted, the lifting hook 53 can firmly connect the heavy object to ensure that the heavy object will not fall off during hoisting, and one end of each of the two middle-hole vertical and drooping arms 42 is fixed to the two ends of the first auxiliary arm 51 through a connecting shaft, when the two middle-hole vertical and drooping arms 42 swing, the auxiliary arm piece is driven to swing to change the use angle of the auxiliary arm piece.

[0027] The pointed auxiliary arm mechanism 5 also includes a telescopic part, which is used to change the length of the first auxiliary arm 51 and the second auxiliary arm 52, thereby expanding the operating range of the crane. The telescopic part includes a second hydraulic cylinder 54 and two center-hole traction plates 55. The second hydraulic cylinder 54 is fixed to the inside of the first auxiliary arm 51, and the two center-hole traction plates 55 are respectively fixed to the two sides of the first auxiliary arm 51. A sliding column 56 slides between the insides of the two center-hole traction plates 55, and the telescopic end passes through and extends to the outside of the first auxiliary arm 51. The telescopic end of the second hydraulic cylinder 54 is fixed to the outside of the sliding column 56, which is used to push the sliding column 56 to slide inside the center-hole traction plate 55. Under the traction of the center-hole traction plate 55, the sliding trajectory of the sliding column 55 is restricted. 6 has two hollow push-pull columns 57 for external rotation, and solid columns 58 are rotated inside the two hollow push-pull columns 57. Two first vertical slots 59 are provided on the outside of the first auxiliary arm 51, and two second vertical slots 510 are provided on the outside of the second auxiliary arm 52. The two center-hole push-pull columns 57 are cross-arranged with the two solid columns 58, and one end of the two hollow push-pull columns 57 and one end of the two solid columns 58 are movably installed in the inside of the two first vertical slots 59 through sliding seats, and the other end of the two hollow push-pull columns 57 and the other end of the two solid columns 58 are movably installed in the inside of the two second vertical slots 510 through sliding seats, respectively. The first auxiliary arm 51 and the second auxiliary arm 52 are connected by the hollow push-pull columns 57 and the solid columns 58.

[0028] To enable those skilled in the art to fully understand the technical solution, this application provides the following overall overview:

[0029] When in use, if the angle of the auxiliary arm needs to be changed during operation, it is only necessary to control the extension and retraction of the telescopic end of the first hydraulic cylinder 41 to push and pull the connecting arm 44. Figure 2 To view the left and right sides of the drawing, the connecting arm 44 moves to the right, pulling the installation shaft 43 to the right. When moving, the installation shaft 43 will pull the two center-hole vertical rocker plates 42 to swing obliquely to the right, thereby driving the first auxiliary arm 51 and the second auxiliary arm 52 in the auxiliary arm part to tilt upward. Conversely, the installation shaft 43 moves to the left, pushing the two center-hole vertical rocker plates 42 to swing obliquely to the left, thereby driving the first auxiliary arm 51 and the second auxiliary arm 52 in the auxiliary arm part to hang down. During work, the direction of the auxiliary arm part can be quickly and easily adjusted without wasting a lot of time on disassembling and assembling the auxiliary arm part, which helps to improve work efficiency and reduce working time.

[0030] By controlling the second hydraulic cylinder 54 to push and pull the sliding column 56, the sliding column 56 slides under the restriction of the middle hole traction plate 55, and drives the two hollow push and pull columns 57 and the solid column 58 intersection rotating connection points to move, if the sliding column 56 moves to the position away from the first auxiliary arm 51, drives the hollow push and pull column 57 and the solid column 58 to gradually open, the intersection angle is larger, thereby pushing the second auxiliary arm 52 out, increase the length of the auxiliary arm part, on the contrary, if the sliding column 56 moves to the position close to the first auxiliary arm 51, drives the hollow push and pull column 57 and the solid column 58 to gradually fold, the intersection angle is smaller, thereby pulling the second auxiliary arm 52 into the first auxiliary arm 51, reduce the length of the auxiliary arm part.

[0031] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail, and the contents not described in detail in the specification belong to the prior art known to the person skilled in the art.

[0032] Although the embodiments of the utility model have been shown and described, the scope of the utility model is defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A truck-mounted crane pointed jib, characterized in that: include: A telescopic main arm (1), wherein a mounting auxiliary arm (2) is mounted inside the telescopic main arm (1) via a pin shaft, the interior of the mounting auxiliary arm (2) is a hollow structure, a traction groove (3) is provided on the top of the mounting auxiliary arm (2), and a pointed auxiliary arm mechanism (5) is rotatably provided at one end of the mounting auxiliary arm (2); A tilting assembly (4), wherein the tilting assembly (4) is arranged inside the mounting auxiliary arm (2), and the tilting assembly (4) comprises a first hydraulic cylinder (41), two center-hole tilting arms (42), a mounting shaft (43) and a connecting arm (44), wherein the first hydraulic cylinder (41) is fixed inside the mounting auxiliary arm (2), the connecting arm (44) slides inside the traction groove (3), the two ends of the connecting arm (44) are respectively fixed to the telescopic end of the first hydraulic cylinder (41) and the mounting shaft (43), the mounting shaft (43) slides between the insides of the two center-hole tilting arms (42), and one end of the two center-hole tilting arms (42) rotates on both sides of the mounting auxiliary arm (2).

2. The truck-mounted crane pointed jib according to claim 1, characterized in that: The pointed jib mechanism (5) comprises a jib component, and the jib component is used to lengthen the mechanical arm of the crane.

3. The truck-mounted crane pointed jib according to claim 2, characterized in that: The auxiliary arm member comprises a first auxiliary arm (51) and a second auxiliary arm (52), one end of the second auxiliary arm (52) is provided with a hook (53), and one end of the two central hole vertical arms (42) is respectively fixed to the two ends of the first auxiliary arm (51) through a connecting shaft.

4. The truck-mounted crane pointed jib according to claim 3, characterized in that: The pointed auxiliary arm mechanism (5) further comprises a telescopic member, which is used to change the length of the first auxiliary arm (51) and the second auxiliary arm (52).

5. The truck-mounted crane pointed jib according to claim 4, characterized in that: The telescopic member includes a second hydraulic cylinder (54) and two center-hole traction plates (55), wherein the second hydraulic cylinder (54) is fixed inside the first auxiliary arm (51), and the two center-hole traction plates (55) are respectively fixed on both sides of the first auxiliary arm (51), and a sliding column (56) slides between the insides of the two center-hole traction plates (55), and the telescopic end of the second hydraulic cylinder (54) is fixed to the outside of the sliding column (56), and the outside of the sliding column (56) is rotated with two hollow push-pull columns (57), and the insides of the two hollow push-pull columns (57) are both rotated with solid columns (58).

6. The truck-mounted crane pointed jib according to claim 5, characterized in that: Two first vertical slots (59) are provided on the outside of the first auxiliary arm (51), and two second vertical slots (510) are provided on the outside of the second auxiliary arm (52). One end of the two hollow push-pull columns (57) and one end of the two solid columns (58) are movably installed in the interior of the two first vertical slots (59) through sliding seats, and the other end of the two hollow push-pull columns (57) and the other end of the two solid columns (58) are movably installed in the interior of the two second vertical slots (510) through sliding seats.

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