Welding equipment for machining eccentric seat of crane foundation arm

By designing a welding equipment for the eccentric seat of the crane foundation arm, the precise positioning and locking of the foundation arm and the eccentric seat is achieved by using the positioning support and the bidirectional adjustment screw, the problems of insufficient precision and large welding deformation in the prior art are solved, and the welding accuracy and production efficiency are improved.

CN222857093UActive Publication Date: 2025-05-13YANCHENG GUJIN MACHINERY CO LTD
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Patent Information

Application Number
CN202421770176.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-25
Publication Date
2025-05-13
Estimated Expiration
2034-07-25

AI Technical Summary

Technical Problem

The prior art is difficult to ensure the accuracy requirements of the eccentric seat of the crane foundation arm, resulting in problems such as skewed and inability to fold, and the welding deformation is large, affecting product quality and production efficiency.

Method used

A welding equipment for processing eccentric seat of the crane foundation arm is designed. The foundation arm is positioned and supported by the positioning support in the positioning frame, and the locking clamp is driven by the bidirectional adjustment screw to clamp the eccentric seat, ensuring the stability of the relative position during welding and improving welding accuracy.

Benefits of technology

Accurate positioning and locking of the foundation arm and eccentric seats is achieved, welding accuracy is ensured, machining allowance of bushing holes is reduced, and production efficiency and product quality are improved.

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Abstract

The utility model relates to the technical field of machining, in particular to welding equipment for machining an eccentric seat of a crane foundation jib, which comprises a mounting base, mounting towers are fixedly mounted on two sides of the top of the mounting base, a positioning body frame is movably mounted in the mounting towers, a plurality of positioning support seats are arranged on the inner side of the positioning body frame, and the positioning support seats are movably mounted on the mounting towers. A foundation arm is placed on the top of the positioning supporting seat, and a positioning tower located on the side face of the foundation arm is welded to the positioning body frame. According to the welding equipment for machining the eccentric seat of the crane foundation arm, the foundation arm is positioned and supported through the positioning supporting seat in the positioning body frame, the foundation arm is pressed tightly through cooperation of the two sets of quick manual clamps, then the two sets of locking clamping plates are driven by the two-way adjusting screw rod to move to clamp the eccentric seat, and the eccentric seat is pressed tightly through the quick manual clamps; the base arm and the eccentric seat are locked after being positioned, and the stability of the relative positions of the base arm and the eccentric seat during welding is guaranteed.
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Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to welding equipment for processing an eccentric seat of a crane foundation arm. Background Art

[0002] Truck mounted crane is a new type of high-efficiency lifting and transportation equipment that integrates lifting and transportation. It is increasingly used for its advantages of being fast, flexible, efficient, convenient, and combining loading, unloading and transportation. At present, various industries in China have higher and higher requirements for the functions of cranes, especially for truck mounted cranes that have both lifting and transportation functions. The eccentric seat of the knuckle boom truck mounted crane is the connecting structure between the basic arm and the turntable.

[0003] The eccentric seat has a complex shape and many welds. The reaming hole shape tolerance and dimensional accuracy requirements are very high. If the position accuracy of the eccentric seat is not enough, it will cause the boom to be skewed and the boom cannot be folded. The eccentric seat is a spatial dimension relative to the arm body. It is difficult to ensure its accuracy requirements by manual marking and assembly, and the welding deformation is large. In order to meet the processing conditions, the sleeve must be thickened to leave a large processing allowance for the sleeve hole. After welding, machining is performed to ensure dimensional accuracy. This will increase the processing volume and the sleeve wall thickness deviation. The product quality is unstable, the productivity is low, and the cost is high. It cannot meet the needs of modern and large-scale production. For this reason, we propose a welding equipment for the processing of the eccentric seat of the crane foundation arm to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a welding device for processing an eccentric seat of a crane base arm, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a welding device for processing the eccentric seat of a crane base arm, comprising a mounting base, mounting towers are fixedly installed on both sides of the top of the mounting base, and a positioning body frame is movably installed inside the mounting tower, a plurality of positioning supports are arranged on the inner side of the positioning body frame, and a base arm is placed on the top of the positioning support, a positioning tower located on the side of the base arm is welded on the positioning body frame, and a quick manual clamp is fixedly installed on the top of the positioning tower, a connecting frame is fixedly installed on the top of a group of mounting towers near the head of the base arm, and a two-way adjusting screw is movably installed inside the connecting frame, two groups of symmetrically distributed transmission arms are threadedly connected to the two-way adjusting screw, and locking clamps are fixedly connected to the ends of the transmission arms, and the two groups of locking clamps have eccentric seats clamped inside.

[0006] Preferably, the number of the positioning supports is 4-6 groups, and the positioning supports are evenly distributed inside the positioning frame, and the shape of the positioning supports is compatible with the base arm.

[0007] Preferably, a locking knob is threadedly connected to a mounting tower on one side close to the base arm head, and a plurality of locking holes are provided on the circumference of a group of mounting towers close to the base arm head.

[0008] Preferably, the bidirectional adjustment screw is provided with threads on the outside thereof which cooperate with the two sets of transmission arms and rotate counter to each other, and one end of the transmission arm away from the locking clamp is clamped in the inside of the connecting frame.

[0009] Preferably, the shape of the locking clamp is adapted to the eccentric seat, and a quick manual clamp is fixedly mounted on the top of the locking clamp.

[0010] Preferably, a circular opening matching with the tail of the base arm is provided at one end of the positioning frame close to the tail of the base arm, and the cross-sectional area of ​​the circular opening is larger than the cross-sectional area of ​​the base arm.

[0011] The utility model provides a welding device for processing the eccentric seat of the crane foundation arm, which has the following

[0012] Beneficial effects:

[0013] 1. The welding equipment for processing the eccentric seat of the crane foundation arm positions and supports the foundation arm through the positioning support seat in the positioning frame, and presses the foundation arm through two sets of quick manual clamps, and then drives the two sets of locking clamps to move and clamp the eccentric seat through the two-way adjustment screw, and presses the eccentric seat through the quick manual clamp, so as to realize locking the foundation arm and the eccentric seat after positioning, ensure the stability of the relative position of the foundation arm and the eccentric seat during welding, ensure the welding accuracy, and at the same time, no large margin is required for the shaft sleeve hole, thereby improving production efficiency.

[0014] 2. The welding equipment for processing the eccentric seat of the crane base arm can release the restriction on the positioning frame by rotating the locking knob when welding after positioning the base arm and the eccentric seat. The positioning frame can be used to drive the base arm and the eccentric seat to rotate forward or reversely, exposing the welding position of the base arm and the eccentric seat, which is convenient for subsequent welding operations and further improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model after overall assembly;

[0016] Figure 2 It is a schematic structural diagram of the utility model as a whole viewed from the front;

[0017] Figure 3 This is a schematic diagram of the structure inside the positioning frame of the utility model;

[0018] Figure 4 It is a structural schematic diagram of one side of the connection frame of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the locking splint of the utility model.

[0020] In the figure: 1. Mounting base; 2. Mounting tower; 3. Positioning frame; 4. Locking knob; 5. Positioning support; 6. Basic arm; 7. Eccentric seat; 8. Positioning tower; 9. Connecting frame; 10. Two-way adjustment screw; 11. Transmission arm; 12. Locking clamp; 13. Quick manual clamp; 14. Locking hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figure 1 , 2 3. The utility model provides a technical solution: a welding device for processing the eccentric seat of the foundation arm of a crane, comprising a mounting base 1, mounting towers 2 are fixedly installed on both sides of the top of the mounting base 1, and a positioning frame 3 is movably installed inside the mounting tower 2, and the restriction on the positioning frame 3 is released by rotating the locking knob 4, and the foundation arm 6 and the eccentric seat 7 can be driven by the positioning frame 3 to rotate forward or reversely, so that the welding position of the foundation arm 6 and the eccentric seat 7 is exposed, which is convenient for subsequent welding operations, and a plurality of positioning supports 5 are arranged on the inner side of the positioning frame 3, and the foundation arm 6 is placed on the top of the positioning supports 5, and a positioning tower 8 located on the side of the foundation arm 6 is welded on the positioning frame 3, and a quick manual clamp 13 is fixedly installed on the top of the positioning tower 8, and the quick manual clamp 13 on the top of the positioning tower 8 is pulled to clamp the foundation arm 6 again, further ensuring the foundation To ensure the stability of the arm 6 during welding, a connecting frame 9 is fixedly installed on the top of a group of mounting towers 2 near the head of the base arm 6, and a two-way adjusting screw 10 is movably installed inside the connecting frame 9. Two groups of symmetrically distributed transmission arms 11 are threadedly connected on the two-way adjusting screw 10. Rotating the two-way adjusting screw 10 can drive the two groups of transmission arms 11 to move, thereby adjusting the position of the locking clamping plate 12, which is convenient for clamping the eccentric seat 7. The ends of the transmission arms 11 are fixedly connected with locking clamping plates 12. The eccentric seat 7 is clamped inside the two groups of locking clamping plates 12. The base arm 6 is positioned and supported by the positioning support 5, and the two groups of locking clamping plates 12 are driven by the two-way adjusting screw 10 to move and clamp the eccentric seat 7, so that the base arm 6 and the eccentric seat 7 are locked after positioning, thereby ensuring the stability of the relative position of the base arm 6 and the eccentric seat 7 during welding, and ensuring the welding accuracy.

[0023] See also Figure 2 , 3, 4. The number of positioning supports 5 is 4-6 groups, and the positioning supports 5 are evenly distributed inside the positioning frame 3. The shape of the positioning supports 5 is compatible with the base arm 6. The base arm 6 can be stably supported by the cooperation of several positioning supports 5 to ensure the stability of the base arm 6 during welding. A locking knob 4 is threadedly connected to the mounting tower 2 on the side close to the head of the base arm 6. The tightness of the positioning frame 3 can be adjusted by rotating the locking knob 4, so that the welding angle of the base arm 6 and the eccentric seat 7 can be adjusted through the positioning frame 3. A group of locking holes 14 are opened on the side of the mounting tower 2 close to the head of the base arm 6. By tightening the locking knob 4 in any locking hole 14, the position of the positioning frame 3 can be locked to ensure the stability of the base arm 6 and the eccentric seat 7 during welding.

[0024] See also Figure 4 , 5 The outer side of the two-way adjusting screw 10 is provided with threads that cooperate with the two sets of transmission arms 11 and rotate counterclockwise to each other, ensuring that rotating the two-way adjusting screw 10 can drive the two sets of transmission arms 11 to move synchronously inward or outward, realizing the synchronous adjustment of the two sets of locking clamps 12, and the end of the transmission arm 11 away from the locking clamp 12 is clamped in the interior of the connecting frame 9, which limits the position of the transmission arm 11 and ensures that the transmission arm 11 can only move along the axial direction of the two-way adjusting screw 10 to prevent the transmission arm 11 from rotating. The shape of the locking clamp 12 is adapted to the eccentric seat 7 to ensure that the two sets of locking clamps 12 can cooperate to stably clamp the eccentric seat 7, and a quick manual clamp 13 is fixedly installed on the top of the locking clamp 12. After the locking clamp 12 clamps the eccentric seat 7, the quick manual clamp 13 on the top of the locking clamp 12 is pulled to clamp the eccentric seat 7 again, further ensuring the stability of the eccentric seat 7 during welding.

[0025] A circular opening matching with the positioning frame 3 is provided at one end of the positioning frame 3 close to the tail of the base arm 6. The base arm 6 can be pushed into the interior of the positioning frame 3 along the opening of the positioning frame 3, which is convenient for loading and unloading the base arm 6. The cross-sectional area of ​​the circular opening is larger than the cross-sectional area of ​​the base arm 6, ensuring that the base arm 6 can be smoothly pushed into the interior of the positioning frame 3 and avoiding interference of the positioning frame 3 with the base arm 6.

[0026] In summary, when the welding equipment for processing the eccentric seat of the crane foundation arm is used, the foundation arm 6 is pushed into the interior of the positioning frame 3 along the opening at one end of the positioning frame 3, and the head of the foundation arm 6 is close to the side of the positioning frame 3 away from the opening, and the foundation arm 6 is supported by a plurality of positioning supports 5 on the inner side of the positioning frame 3, the quick manual clamps 13 on the two groups of positioning towers 8 are pulled to press the foundation arm 6, the eccentric seat 7 is placed between the two groups of locking clamps 12, and the two-way adjustment screw 10 is rotated to drive the two groups of transmission arms 11 and the locking clamps 12 to move inward synchronously. , clamp the eccentric seat 7 to achieve the positioning of the eccentric seat 7. After the locking clamp 12 is clamped, pull the quick manual clamp 13 on the top of the locking clamp 12 to move and press the eccentric seat 7 to achieve the positioning and locking of the base arm 6 and the eccentric seat 7. Rotate the locking knob 4 to release the restriction on the positioning frame 3. Drive the base arm 6 and the eccentric seat 7 to rotate through the positioning frame 3 to expose the connection between the base arm 6 and the eccentric seat 7. Then rotate the locking knob 4 again to lock the positioning frame 3, and then the connection between the base arm 6 and the eccentric seat 7 can be welded.

[0027] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for processing an eccentric seat of a crane foundation arm, comprising a mounting base (1), characterized in that: The mounting towers (2) are fixedly mounted on both sides of the top of the mounting base (1), and a positioning frame (3) is movably mounted inside the mounting towers (2). A plurality of positioning supports (5) are arranged inside the positioning frame (3), and a base arm (6) is placed on the top of the positioning support (5). A positioning tower (8) located on the side of the base arm (6) is welded to the positioning frame (3), and a quick manual clamp (13) is fixedly mounted on the top of the positioning tower (8). A connecting frame (9) is fixedly mounted on the top of a group of mounting towers (2) near the head of the base arm (6), and a bidirectional adjustment screw (10) is movably mounted inside the connecting frame (9). Two groups of symmetrically distributed transmission arms (11) are threadedly connected to the bidirectional adjustment screws (10), and the ends of the transmission arms (11) are fixedly connected with locking clamps (12), and the two groups of locking clamps (12) have eccentric seats (7) clamped inside.

2. The welding equipment for processing the eccentric seat of the crane foundation arm according to claim 1 is characterized by: The number of the positioning supports (5) is 4-6 groups, and the positioning supports (5) are evenly distributed inside the positioning frame (3), and the shape of the positioning supports (5) is compatible with the base arm (6).

3. The welding equipment for processing the eccentric seat of the crane base arm according to claim 1 is characterized by: A locking knob (4) is threadedly connected to a mounting tower (2) on one side close to the head of the base arm (6), and a plurality of locking holes (14) are provided on the circumference of a group of mounting towers (2) close to the head of the base arm (6).

4. The welding equipment for processing the eccentric seat of the crane foundation arm according to claim 1 is characterized by: The bidirectional adjustment screw (10) is provided with threads on the outside thereof which cooperate with the two sets of transmission arms (11) and rotate in opposite directions to each other. One end of the transmission arm (11) away from the locking clamping plate (12) is clamped inside the connection frame (9).

5. The welding equipment for processing the eccentric seat of the crane foundation arm according to claim 1 is characterized in that: The shape of the locking clamp (12) is compatible with the eccentric seat (7), and a quick manual clamp (13) is fixedly installed on the top of the locking clamp (12).

6. The welding equipment for processing the eccentric seat of the crane foundation arm according to claim 1 is characterized by: A circular opening matching with the base arm (6) is provided at one end of the positioning frame (3) close to the tail of the base arm (6), and the cross-sectional area of ​​the circular opening is larger than the cross-sectional area of ​​the base arm (6).