A clamping device and method for machining crane structural components

Abstract

This invention provides a clamping device for machining crane structural components, belonging to the field of crane structural component machining technology. It includes a first clamping member and a second clamping member, which are threadedly connected. The first clamping member is welded and fixed to a supporting member, and the crane structural component is placed between the first and second clamping members. This invention clamps the crane structural component using a clamping device and welds the supporting member to the clamping device, avoiding damage to the structural component caused by direct welding. The device provides reliable fixation and is reusable, improving machining efficiency.

Description

Technical Field

[0001] This invention belongs to the field of crane structural component machining technology, and particularly relates to a clamping device and method for machining crane structural components. Background Technology

[0002] With the continuous development of the crane industry, users are increasingly demanding higher quality standards in the manufacturing process of steel structural components. During machining, particularly boring and end-face machining, a larger cutting depth is required to improve production efficiency. Additionally, some components may lack sufficient rigidity, necessitating the use of structural steel to support weak points on the foundation.

[0003] Traditionally, during machining, supporting components are spot-welded to structural parts. However, welding high-strength steel has strict requirements. If preheating is not performed according to regulations and the correct welding method is not used, micro-cracks will develop in the material, which is unacceptable to the user. Adopting a cumbersome and strict high-strength steel welding control scheme will significantly increase production costs and slow down production schedules. Besides high-strength steel, spot welding of other materials also requires grinding and other work, and results in poor appearance. Summary of the Invention

[0004] To address the deficiencies or shortcomings in existing technologies, this invention provides a clamping device and method for machining crane structural components. By setting up a clamping device to clamp the crane structural components and welding the supporting components onto the clamping device, damage to the structural components caused by direct welding is avoided. The device is reliably fixed and reusable, thereby improving processing efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, embodiments of the present invention provide a clamping device for machining crane structural components, including a first clamping member and a second clamping member, the first clamping member and the second clamping member being threadedly connected, the first clamping member being welded and fixed to a support member, and the crane structural component being placed between the first clamping member and the second clamping member.

[0007] Furthermore, the first clamping member includes a first clamping part and a first connecting part, both of which are cylindrical structures. The diameter of the first clamping part is larger than the diameter of the first connecting part. The first connecting part is disposed on one side of the second connecting part and is coaxially disposed with the first clamping part.

[0008] Furthermore, the outer surface of the first connecting part is provided with a left-hand external thread, and a bolt hole is provided at the axis of the first connecting part.

[0009] Further, the bolt hole inner wall is provided with right-hand internal thread, and the anti-loosening bolt outer surface is provided with right-hand external thread matched with the bolt hole inner wall right-hand internal thread.

[0010] Further, the first clamping part is provided with a first internal hexagonal counterbore at one end away from the first connecting part.

[0011] Further, the second clamping part includes a second clamping part and a second connecting part, both of which are cylindrical structures, the second clamping part diameter is greater than the second connecting part diameter, the second clamping part is arranged on one side of the second connecting part, and the second clamping part and the second connecting part are coaxially arranged.

[0012] Further, the second connecting part is provided with a connecting hole at the axis, and the connecting hole diameter is the same as the first connecting part outer diameter.

[0013] Further, the connecting hole inner wall is provided with left-hand internal thread matched with the first connecting part left-hand external thread.

[0014] Further, the second clamping part is provided with a second internal hexagonal counterbore at one end away from the second connecting part, a through hole is arranged between the connecting hole and the second internal hexagonal counterbore, and the through hole diameter is greater than the anti-loosening bolt diameter.

[0015] In the second aspect, the embodiments of the present application provide a clamping method for crane structural part machining, using the crane structural part machining clamping device as described above, including the following steps:

[0016] First, insert the first connecting part into the connecting hole of the second connecting part, and make the first clamping part and the second clamping part threadedly connected through the left-hand external thread on the first connecting part and the left-hand internal thread on the second connecting part, place the crane structural part between the first clamping part and the second clamping part, use the internal hexagonal wrench to cooperate with the internal hexagonal counterbores on the first clamping part and the second clamping part, and tighten the first clamping part and the second clamping part, so as to clamp the crane structural part placed between the first clamping part and the second clamping part;

[0017] Then, after the anti-loosening washer is sleeved on the anti-loosening bolt, the anti-loosening bolt passes through the through hole on the second clamping part and is threadedly connected with the bolt hole on the first clamping part, so as to reliably prevent the first clamping part and the second clamping part from loosening;

[0018] Finally, the first clamping part is welded and connected with the support member of the machining equipment, and the machining equipment is used to bore and process the crane structural part.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] 1. The present invention clamps the crane structural components by setting a first clamping member and a second clamping member, and welds the supporting components to the first clamping member, which avoids damage to the structural components caused by direct welding, and the fixing is reliable and reusable, thereby improving processing efficiency.

[0021] 2. The first clamping member and the second clamping member of the present invention are connected by left-hand thread, and the anti-loosening bolt and the bolt hole are connected by right-hand thread. The left-hand thread and the right-hand thread lock each other and lock together simultaneously, thereby ensuring the overall anti-loosening effect of the clamping device. Attached Figure Description

[0022] Figure 1 This is a structural diagram of the clamping device in Embodiment 1 of the present invention;

[0023] Figure 2 This is a structural diagram of the first clamping member in Embodiment 1 of the present invention;

[0024] Figure 3 This is a structural diagram of the second clamping member in Embodiment 1 of the present invention;

[0025] Figure 4 This is a diagram showing the connection relationship between the clamping device and the crane structural components in Embodiment 2 of the present invention;

[0026] Among them, 1. First clamping member; 2. Second clamping member; 3. Anti-loosening bolt; 4. First clamping part; 5. First connecting part; 6. Left-hand external thread; 7. Bolt hole; 8. First internal hexagon countersunk hole; 9. Second clamping part; 10. Second connecting part; 11. Connecting hole; 12. Left-hand internal thread; 13. Second internal hexagon countersunk hole; 14. Through hole; 15. Crane structural component; 16. Anti-loosening washer; 17. Support component; 18. Cutting tool. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Example 1

[0029] A typical embodiment of the present invention, such as Figure 1 As shown, a clamping device for machining crane structural components includes a first clamping member 1, a second clamping member 2, and an anti-loosening bolt 3. The first clamping member 1 and the second clamping member 2 are arranged opposite to each other. The crane structural component 15 is placed between the first clamping member 1 and the second clamping member 2, and the crane structural component 15 is clamped by the first clamping member 1 and the second clamping member 2. The anti-loosening bolt 3 is used to prevent the first clamping member 1 and the second clamping member 2 from loosening after clamping.

[0030] like Figure 2As shown in the drawings, the first clamping part 1 comprises a first clamping part 4 and a first connecting part 5, both of which are cylindrical structures, the diameter of the first clamping part 4 is larger than that of the first connecting part 5, the first clamping part 4 is arranged on one side of the first connecting part 5, and the first clamping part 4 and the first connecting part 5 are coaxially arranged, and the outer surface of the first connecting part 5 is provided with a left-handed external thread 6.

[0031] The axis of the first connecting part 5 is provided with a bolt hole 7, and the inner wall of the bolt hole 7 is provided with a right-handed internal thread.

[0032] The end of the first clamping part 4 away from the first connecting part 5 is provided with a first internal hexagonal counterbore 8.

[0033] As shown in the drawings, Figure 3 The second clamping part 2 comprises a second clamping part 9 and a second connecting part 10, both of which are cylindrical structures, the diameter of the second clamping part 9 is larger than that of the second connecting part 10, the second clamping part 9 is arranged on one side of the second connecting part 10, and the second clamping part 9 and the second connecting part 10 are coaxially arranged, the axis of the second connecting part 9 is provided with a connecting hole 11, the diameter of the connecting hole 11 is the same as the outer diameter of the first connecting part 5, the inner wall of the connecting hole 11 is provided with a left-handed internal thread 12, and the left-handed internal thread 12 is matched with the left-handed external thread 6 of the first connecting part 5.

[0034] The left-handed external thread 6 on the first connecting part 5 and the left-handed internal thread 12 on the connecting hole 11 are matched to realize the threaded connection between the first clamping part 1 and the second clamping part 2, the crane structural part 15 is placed between the first clamping part 1 and the second clamping part 2, and the first clamping part 1 and the second clamping part 2 are tightened to clamp the crane structural part 15, and at the same time, due to the threaded connection between the first clamping part 1 and the second clamping part 2, different sizes of crane structural parts 15 can be clamped.

[0035] In addition, the total thickness of the first clamping part 1 and the second clamping part 2 is less than the thickness of the crane structural part 15, and when the crane structural part 15 is clamped, it does not affect the machining of the end face of the crane structural part 15 by the tool on the machining equipment.

[0036] The end face of the second clamping part 9 away from the second connecting part 10 is provided with a second internal hexagonal counterbore 13, and a through hole 14 is arranged between the connecting hole 11 and the second internal hexagonal counterbore 13, the through hole 14 is arranged on the axis of the second clamping part 2, and the diameter of the through hole 14 is larger than that of the lock bolt 3.

[0037] The outer surface of the lock bolt 3 is provided with a right-handed external thread, which is matched with the right-handed internal thread on the inner wall of the bolt hole 7.

[0038] The first clamping part 1 and the second clamping part 2 are connected through left-hand threads, and the lock bolt 3 and the bolt hole 7 are connected through right-hand threads, the threads of the two are opposite in rotation direction, the left-hand threads and the right-hand threads are locked with each other, and the two are locked at the same time through cooperation, so that the anti-loosening effect of the whole clamping device is ensured.

[0039] Embodiment two

[0040] The embodiment discloses a clamping method for crane structural part machining, and utilizes the clamping device for crane structural part machining as described in embodiment one, and comprises the following steps:

[0041] First, the first connecting part 5 is inserted into the connecting hole 11 of the second connecting part 10, the left-hand external threads 6 on the first connecting part 5 and the left-hand internal threads 12 on the second connecting part 10 are cooperated with each other, the first clamping part 1 and the second clamping part 2 are threadedly connected, the crane structural part 15 is placed between the first clamping part 4 and the second clamping part 9, the internal hexagonal socket on the first clamping part 4 and the second clamping part 9 is cooperated with a hexagonal wrench, the first clamping part 1 and the second clamping part 2 are tightened, and the crane structural part 15 placed between the first clamping part 1 and the second clamping part 2 is clamped.

[0042] After the lock bolt 3 is sleeved with the lock washer 16, the lock bolt 3 is passed through the through hole 14 on the second clamping part 2 and is threadedly connected with the bolt hole 7 on the first clamping part 1, so that the first clamping part 1 and the second clamping part 2 are reliably prevented from loosening.

[0043] When the crane structural part 15 is machined and bored and end face machined, the supporting member 17 can be welded on the first clamping part 1, the first clamping part 1 and the second clamping part 2 are clamped, and the cutter 18 is used to bore and machine the end face of the crane structural part 15, so that the influence of welding on the crane structural part 15 is avoided, the machining efficiency is improved, and the supporting member 17 can be recycled.

[0044] The above merely describes the preferred embodiments of the present application and is not used to limit the present application, and various changes and modifications can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A clamping device for machining of a crane structural member, characterized in that The first clamping part and the second clamping part are threadedly connected, the first clamping part is fixedly welded to the supporting member, the crane structure member is placed between the first clamping part and the second clamping part, the first clamping part and the second clamping part are cylindrical structures with different diameters, and the first clamping part and the second clamping part are connected through left-handed threads, the lock bolt is connected to the bolt hole through right-handed threads, and the threads of the lock bolt and the bolt hole are opposite in rotation direction; The first clamping part comprises a first clamping portion and a first connecting portion, a bolt hole is arranged at the axis of the first connecting portion, and a left-handed external thread is arranged on the outer surface of the first connecting portion; The lock bolt is arranged on the inner wall of the bolt hole, a right-handed internal thread is arranged on the inner wall of the bolt hole, and a right-handed external thread is arranged on the outer surface of the lock bolt and matched with the right-handed internal thread on the inner wall of the bolt hole; The second clamping part comprises a second clamping portion and a second connecting portion, a connecting hole is arranged at the axis of the second connecting portion, a left-handed internal thread is arranged on the inner wall of the connecting hole, and the left-handed internal thread is matched with the left-handed external thread of the first connecting portion; A first internal hexagonal counterbore is arranged at the end of the first clamping portion away from the first connecting portion, a second internal hexagonal counterbore is arranged on the end face of the second clamping portion away from the second connecting portion, a through hole is arranged between the connecting hole and the second internal hexagonal counterbore, and the diameter of the through hole is greater than the diameter of the lock bolt.

2. A clamping device for machining of a crane structure member according to claim 1, characterized in that The second clamping portion and the second connecting portion are cylindrical structures, the diameter of the first clamping portion is greater than the diameter of the first connecting portion, the first connecting portion is arranged on one side of the second connecting portion, and the first connecting portion is coaxially arranged with the first clamping portion.

3. A clamping device for machining a crane structural member as claimed in claim 1, characterized in that The second clamping portion and the second connecting portion are cylindrical structures, the diameter of the second clamping portion is greater than the diameter of the second connecting portion, the second clamping portion is arranged on one side of the second connecting portion, and the second clamping portion is coaxially arranged with the second connecting portion.

4. A clamping device for machining a crane structural member as defined in claim 1, characterized in that The diameter of the connecting hole is the same as the outer diameter of the first connecting portion.

5. A method of clamping a crane structural member for machining, using a crane structural member clamping device according to any one of claims 1 to 4, characterized in that The method comprises the following steps: First, the first connecting portion is inserted into the connecting hole of the second connecting portion, the first clamping part and the second clamping part are threadedly connected through the cooperation of the left-handed external thread on the first connecting portion and the left-handed internal thread on the second connecting portion, the crane structure member is placed between the first clamping portion and the second clamping portion, the internal hexagonal counterbores on the first clamping portion and the second clamping portion are matched with an internal hexagonal wrench, the first clamping part and the second clamping part are tightened, and the crane structure member placed between the first clamping portion and the second clamping portion is clamped; Then, the lock bolt is sleeved with a lock washer, passes through the through hole on the second clamping part, and is threadedly connected to the bolt hole on the first clamping part, so as to prevent the first clamping part and the second clamping part from loosening; Finally, the first clamping part is welded to the supporting member of the machining equipment, and the machining equipment is used to bore and process the cross section of the crane structure member.

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