A double-ear plate structure welding and straightening device

Abstract

The utility model belongs to the field of welding technology especially relates to a follow -up welding straightening device for double lug plate structure. The device of the utility model, include: front part tight component, tail part anvil, tail part force relief component, tail part force relief component includes: bolt assembly, is used for adjusting the clearance between front part tight component and tail part anvil and carries out force relief, force relief movable arm is connected with tail part anvil and front part tight component slip, its upper wedge surface is opposite bolt assembly, and its upper arrangement has a rack, gear wrench is engaged with the rack on force relief movable wall. Through the use of front part tight component and tail part anvil tight the lug plate of both sides, through the force of front part tight component can carry out the control of the reverse deformation of lug plate, after welding, rotate gear wrench can make force relief movable arm slip, under the effect of wedge surface, eject bolt assembly from the clearance between tail part anvil and front part tight component, conveniently realized fast force relief, and can be reset automatically after use.

Description

Technical Field

[0001] This utility model belongs to the field of welding technology, and in particular relates to a welding-assisted straightening device for a double-ear plate structure. Background Technology

[0002] Due to the large angular deformation of the lug plates of the boom, stick, and turntable cylinders after welding, it is difficult to ensure the perpendicularity of the lug plates to the machined shaft holes. This results in a large flared gap between the lug plates and the cylinder end face during assembly, requiring flame straightening or grinding of the lug plates, which seriously reduces production efficiency.

[0003] Currently, the control method for welding deformation of the boom, stick, and rotary table cylinder lugs of excavators is welding process reinforcement. This involves using a section of solid square steel at the joint of structural components, with its left and right ends welded to the left and right lugs respectively, so that the left and right lugs are connected into a whole. This enhances the rigidity and restraint of the lug weld joint, thereby reducing the welding deformation of the lugs.

[0004] The above-mentioned welded tie rods have the following main disadvantages: 1. They cannot achieve anti-deformation control. When the welding shrinkage force is large or the ear plate stiffness is insufficient, the ear plate undergoes a certain degree of elastic bending deformation. After the tie rod is removed, the rebound is large, and the deformation control effect is poor. 2. The process of adding and removing tie rods involves welding, air gouging, and grinding, which is time-consuming and labor-intensive. 3. Due to the limited space inside the ear plate and the surface quality requirements, the tie rod can only be welded to the top of the ear plate. The force application point is far from the bottom of the ear plate, the lever arm is long, the restraint on the welded joint of the ear plate is low, and the deformation control effect is poor. 4. After a period of use, due to repeated welding and air gouging, the surface of the tie rod becomes uneven and contains more inclusions. The weld connection strength cannot be guaranteed, which often leads to cracking and low reliability of the tie rod. Summary of the Invention

[0005] To address the aforementioned problems in the existing technology, this utility model provides a welding straightening device for a double-ear plate structure, which can perform reverse deformation control, reduce welding deformation, and quickly release stress.

[0006] To achieve the above objectives, the technical solution provided in this application is as follows:

[0007] This utility model provides a welding-assisted straightening device for a double-ear plate structure, comprising:

[0008] The front clamping component is used to clamp and apply force to one side of the ear plate during the ear plate welding process to control deformation.

[0009] The tail top block is used to tighten the other ear plate during the ear plate welding process. It is movably connected to the front tightening component through a limiting component, which is used to guide the movement direction of the tail top block relative to the front tightening component.

[0010] Tail-end exhaust components include:

[0011] The pin assembly is slidably arranged between the tail top block and the front clamping component to adjust the gap between the front clamping component and the tail top block for force relief.

[0012] The stress relief boom is slidably connected to the tail top block and the front clamping component. Its wedge-shaped surface is opposite to the pin assembly. The sliding of the wedge-shaped surface can drive the pin assembly to slide. A rack is arranged on it. The front clamping component is provided with a sliding cavity for the stress relief boom to slide.

[0013] The gear wrench engages with the rack on the damping wall.

[0014] Optionally, the front clamping component and / or the tail top block are provided with sliding cavities;

[0015] The limiting component includes a guide rod, the end of which is engaged in and slidably connected to the sliding cavity; and / or, the limiting component includes an anti-torsion bolt, the head of which is slidably connected to the sliding cavity, and the shape of the sliding cavity matches the head of the anti-torsion bolt.

[0016] Optionally, a return spring is sleeved on the outer periphery of the limiting member. The return spring is arranged between the front clamping member and the tail top block. The return spring is used to increase the gap between the tail top block and the front clamping member after welding so that the pin assembly can be re-inserted.

[0017] Optionally, a mounting base is provided on the tail top block, and the gear wrench is rotatably connected to the mounting base via a rotating shaft.

[0018] Optionally, it also includes a reset elastic ring, wherein the pin assembly includes several sets of pins, the outer walls of the several sets of pins form an annular ring, and the reset elastic ring is sleeved on the outside of the annular ring.

[0019] Optionally, it also includes a limiting bearing, which is symmetrically arranged on the front clamping member and the rear top block on both sides of the pin assembly, and the limiting bearing is slidably connected to the pin assembly.

[0020] Optionally, the tail top block is threaded with an adjusting bolt on the side opposite to the front clamping component. Rotating the adjusting bolt can adjust the overall length of the adjusting bolt and the tail top block.

[0021] Optionally, a rolling bearing is arranged on the side of the pin assembly facing the wedge-shaped surface.

[0022] Optionally, the front clamping component includes:

[0023] The pressure head is used to press the ear plate tightly, and it has a snap-fit ​​groove.

[0024] The pressure head connector has one end snapped into the snap-fit ​​groove by a hemispherical snap-fit, and a stroke limiting groove is provided on it;

[0025] The top flange has one end passing through the pressure head connector and slidingly connected to the stroke limiting groove via a locking block, and the other end being movably connected to the tail top block via a limiting member. The pin assembly is arranged between the top flange and the tail top block.

[0026] Tighten the nut to connect it to the threaded flange, and connect it to the pressure head connecting body via the connecting rod;

[0027] The force-applying component is used to drive the tightening nut to rotate along the top flange.

[0028] Optionally, the connecting rod and the pressure head connecting body are connected by a plane bearing.

[0029] Compared with the prior art, this application has at least the following beneficial effects:

[0030] This invention utilizes a front clamping component and a rear top block to clamp the ear plates on both sides. The front clamping component applies force to control the reverse deformation of the ear plates. After welding, the force relief boom can be slid by rotating the gear wrench. Under the action of the wedge surface, the pin assembly is pushed out from the gap between the rear top block and the front clamping component, thus conveniently achieving rapid force relief.

[0031] The movement direction of the front clamping component relative to the tail top block is guided and limited by the limiting component, ensuring that the front clamping component can apply force smoothly; through the cooperation of the return spring and the return elastic ring, the return spring increases the gap between the tail top block and the front clamping component after welding, and then the pin assembly can automatically insert into the gap under the action of the return elastic ring to achieve reset.

[0032] The overall length of the adjusting bolt and the tail top block can be adjusted by rotating the adjusting bolt. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of a welding-assisted straightening device for a double-ear plate structure according to an embodiment of the present utility model;

[0035] Figure 2 This is a schematic diagram illustrating the connection relationship between the tail top block and the tail relief component in an embodiment of this utility model;

[0036] Figure 3 This is a schematic diagram of the front clamping component in an embodiment of the present invention;

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Front clamping component; 11. Sliding cavity; 12. Pressure head; 13. Pressure head connector; 131. Stroke limiting groove; 14. Clamping flange; 15. Tightening nut; 16. Connecting rod; 17. Surface bearing; 18. Force-applying component; 2. Tail top block; 21. Adjusting bolt; 22. Mounting base; 23. Handle; 3. Tail force relief component; 31. Force relief boom; 32. Gear wrench; 4. Pin assembly; 41. Pin; 411. Rolling bearing; 42. Return spring ring; 43. Limit bearing; 5. Limiting component; 51. Return spring; 6. Ear plate. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0042] Example 1

[0043] like Figures 1-2 As shown, a welding-assisted straightening device for a double-ear plate structure includes:

[0044] The front clamping component 1 is used to clamp and apply force to one side of the return spring 51 during the welding process to control the deformation.

[0045] The tail top block 2 is used to tighten the other side of the return spring 51 during the welding process. It is movably connected to the front tightening component 1 through the limiting component 5. The limiting component 5 is used to guide the movement direction of the tail top block 2 relative to the front tightening component 1.

[0046] Tail-end exhaust component 3 includes:

[0047] The pin assembly 4 is slidably arranged between the tail top block 2 and the front clamping member 1, and is used to adjust the gap between the front clamping member 1 and the tail top block 2 to release force.

[0048] The stress relief boom 31 is slidably connected to the tail top block 2 and the front clamping component 1. Its wedge-shaped surface is opposite to the pin assembly 4. The pin assembly 4 can be driven to slide by its sliding. A rack is arranged on it. The front clamping component 1 has a sliding cavity 11 for the stress relief boom 31 to slide.

[0049] The gear wrench 32 engages with the rack on the pressure relief moving wall.

[0050] During use, the front clamping component 1 and the tail top block 2 are used to clamp the return springs 51 on both sides. The force applied by the front clamping component 1 can control the reverse deformation of the return springs 51. After welding, the force relief arm 31 can be slid by rotating the gear wrench 32. Under the action of the wedge surface, the pin assembly 4 is pushed out from the gap between the tail top block 2 and the front clamping component 1, which conveniently realizes rapid force relief.

[0051] Example 2

[0052] The difference between this embodiment and Embodiment 1 is that:

[0053] like Figure 2 and Figure 3 As shown, the front clamping component 1 and / or the tail top block 2 are provided with sliding cavities; the limiting component 5 includes a guide rod, the end of which is engaged in the sliding cavity and slidably connected to it; and / or, the limiting component 5 includes an anti-torsion bolt, the head of which is slidably connected to the sliding cavity, and the shape of the sliding cavity matches the head of the anti-torsion bolt. The anti-torsion bolt ensures that the front clamping component 1 and the tail top block 2 can only move along the direction of the anti-torsion bolt and cannot rotate, thus ensuring that the front clamping component 1 can apply force smoothly.

[0054] In this embodiment, a reset spring 51 is sleeved on the outer periphery of the limiting member 5. The reset spring 51 is arranged between the front clamping member 1 and the tail top block 2. Thus, the compressed reset spring 51, after welding, pushes the tail top block 2 and the front clamping member 1 to both sides under the action of elastic potential energy, thereby increasing the gap between the tail top block 2 and the front clamping member 1 so that the pin assembly 4 can be re-inserted.

[0055] It also includes a reset elastic ring 42. The pin assembly 4 includes several sets of pins 4, and the outer sidewalls of the several sets of pins 4 form an annular ring. The reset elastic ring 42 is sleeved on the outside of the annular ring. Through the cooperation of the reset spring 51 and the reset elastic ring 42, after the welding is completed, the reset spring 51 adjusts the gap between the tail top block 2 and the front clamping part 1. Then, under the action of the reset elastic ring 42, the pin assembly 4 can automatically insert into the gap to achieve reset, which is convenient for the next installation and use.

[0056] It also includes a limiting bearing 43, which is symmetrically arranged on the front clamping member 1 and the tail top block 2 on both sides of the pin assembly 4. The limiting bearing 43 is slidably connected to the pin assembly 4. The limiting bearing 43 is symmetrically distributed on both sides of the pin assembly 4 (pin 4) and can limit the opposite movement of the front clamping member 1 and the tail top block 2.

[0057] The tail top block 2 is threadedly connected to an adjusting bolt 21 on the side opposite to the front clamping component 1. Rotating the adjusting bolt 21 can adjust the overall length of the adjusting bolt 21 and the tail top block 2, making the device highly versatile and suitable for the straightening of return springs 51 with different pitches. To facilitate the movement of the device, a handle 23 is provided on the tail top block 2.

[0058] A rolling bearing 411 is arranged on the side of the pin assembly 4 facing the wedge-shaped surface.

[0059] The tail top block 2 is provided with a mounting base 22, and the gear wrench 32 is rotatably connected to the mounting base 22 via a rotating shaft. Rotating the gear wrench 32 will drive the pressure relief boom 31 to slide, thereby pushing out the pin, and the front clamping assembly and the tail top block 2 will move closer to each other to achieve pressure relief.

[0060] like Figure 3 As shown, in this embodiment, the front clamping component 1 includes:

[0061] The pressure head 12 is used to press the return spring 51, and a snap-fit ​​groove is provided on it;

[0062] The pressure head connector 13 has one end connected to the snap-fit ​​groove by a hemispherical snap-fit, and a stroke limiting groove 131 is provided on it;

[0063] The top flange 14 has one end passing through the pressure head connector 13 and slidingly connected to the stroke limiting groove 131 via a locking block, and the other end is movably connected to the tail top block 2 via a limiting member 5. The pin assembly 4 is arranged between the top flange 14 and the tail top block 2.

[0064] Tighten nut 15 to connect it to top flange 14 via thread, and connect it to pressure head connector 13 via connecting rod 16;

[0065] The force-applying component 18 is used to drive the tightening nut 15 to rotate along the tightening flange 14. The force-applying component 18 can be a wrench or other driving component that can drive the tightening nut 15 to rotate.

[0066] In use, the double reset spring 51 structure of the present invention is placed between the two reset springs 51 using a welding-in-place straightening device, such as... Figure 1As shown, first rotate the adjusting bolt 21 to bring both sides of the device close to the return spring 51. Then, the force-applying component 18 drives the tightening nut 15 to rotate. Because the tightening flange 14 cannot rotate under the action of the limiting component 5, the tightening nut 15 can rotate along the thread on the surface of the tightening flange 14. By moving the tightening nut 15 towards the pressure head 12, the connecting rod 16 pushes the pressure head connecting body 13 to the left, thereby causing the locking block on the tightening flange 14 to move to the right within the stroke limiting groove 131, increasing the overall length of the front tightening component 1, thus achieving the tightening of the return spring 51 and ensuring the verticality of the return spring 51. In this application, the pressure head 12 can rotate at a certain angle to avoid indentations on the surface of the return spring 51. The length of the limiting groove determines the magnitude of the correction; the longer the length, the greater the maximum correction.

[0067] In one feasible embodiment, the connecting rod 16 is connected to the pressure head connecting body 13 by a plane bearing 17, so that the right end of the bearing rotates with the tightening nut 15, while the bearing and the pressure head connecting body 13 do not need to rotate, thus converting the sliding friction into the rolling friction inside the plane bearing 17, which greatly reduces the frictional resistance.

[0068] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0069] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A welding-assisted straightening device for a double-ear plate structure, characterized in that, include: The front clamping component is used to clamp and apply force to one side of the ear plate during the ear plate welding process to control deformation. The tail top block is used to tighten the other ear plate during the ear plate welding process. It is movably connected to the front tightening component through a limiting component, which is used to guide the movement direction of the tail top block relative to the front tightening component. Tail-end exhaust components include: The pin assembly is slidably arranged between the tail top block and the front clamping component to adjust the gap between the front clamping component and the tail top block for force relief. The stress relief boom is slidably connected to the tail top block and the front clamping component. Its wedge-shaped surface is opposite to the pin assembly. The sliding of the wedge-shaped surface can drive the pin assembly to slide. A rack is arranged on it. The front clamping component is provided with a sliding cavity for the stress relief boom to slide. The gear wrench engages with the rack on the damping wall.

2. The welding-assisted straightening device for a double-ear plate structure according to claim 1, characterized in that, The front clamping component and / or the tail top block are provided with sliding cavities; The limiting component includes a guide rod, the end of which is engaged in and slidably connected to the sliding cavity; and / or, the limiting component includes an anti-torsion bolt, the head of which is slidably connected to the sliding cavity, and the shape of the sliding cavity matches the head of the anti-torsion bolt.

3. The welding-assisted straightening device for a double-ear plate structure according to claim 1, characterized in that, A reset spring is sleeved on the outer periphery of the limiting member. The reset spring is arranged between the front clamping member and the tail top block. The reset spring is used to increase the gap between the tail top block and the front clamping member after welding so that the pin assembly can be re-inserted.

4. The welding-assisted straightening device for a double-ear plate structure according to claim 1, characterized in that, A mounting base is provided on the tail top block, and the gear wrench is rotatably connected to the mounting base via a rotating shaft.

5. The welding-assisted straightening device for a double-ear plate structure according to claim 1, characterized in that, It also includes a reset elastic ring. The pin assembly includes several sets of pins, and the outer walls of the several sets of pins form an annular ring. The reset elastic ring is sleeved on the outside of the annular ring.

6. The welding-assisted straightening device for a double-ear plate structure according to claim 1, characterized in that, It also includes a limiting bearing, which is symmetrically arranged on the front clamping component and the tail top block on both sides of the pin assembly, and the limiting bearing is slidably connected to the pin assembly.

7. The welding-assisted straightening device for a double-ear plate structure according to claim 1, characterized in that, The tail top block is threaded with an adjusting bolt on the side opposite to the front clamping component. Rotating the adjusting bolt can adjust the overall length of the adjusting bolt and the tail top block.

8. The welding-assisted straightening device for a double-ear plate structure according to claim 1, characterized in that, A rolling bearing is arranged on the side of the pin assembly facing the wedge-shaped surface.

9. The welding-assisted straightening device for a double-ear plate structure according to claim 1, characterized in that, The front clamping component includes: The pressure head is used to press the ear plate tightly, and it has a snap-fit ​​groove. The pressure head connector has one end snapped into the snap-fit ​​groove by a hemispherical snap-fit, and a stroke limiting groove is provided on it; The top flange has one end passing through the pressure head connector and slidingly connected to the stroke limiting groove via a locking block, and the other end being movably connected to the tail top block via a limiting member. The pin assembly is arranged between the top flange and the tail top block. Tighten the nut to connect it to the threaded flange, and connect it to the pressure head connecting body via the connecting rod; The force-applying component is used to drive the tightening nut to rotate along the top flange.

10. The welding-assisted straightening device for a double-ear plate structure according to claim 9, characterized in that, The connecting rod and the pressure head connecting body are connected by a plane bearing.

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