A special-shaped crossbeam of a crane and a processing method thereof

Abstract

A special-shaped crossbeam for a crane and a processing method thereof can effectively reduce the volume of parts by separately arranging the connecting portion and the shaft end in the special-shaped crossbeam; in addition, the processing surface of the special-shaped crossbeam is changed by rotating a floating clamping device, thereby avoiding the defect of re-clamping of a traditional three-jaw chuck and effectively improving the processing efficiency of the special-shaped crossbeam; and the hydraulic chuck in the floating clamping device drives the upper jaw assembly to move downward, which can fix the special-shaped crossbeam together with the lower jaw assembly, and at the same time, through the deformation of the placement ring on the floating retaining frame, the clamping device can be made to correspond to the connecting portion of the special-shaped crossbeam, thereby improving the degree of fixation of the special-shaped crossbeam by the clamping device.

Description

Technical Field

[0001] The present invention relates to the technical field of processing special-shaped crossbeams of cranes, and in particular to a special-shaped crossbeam of cranes and a processing method thereof. Background Art

[0002] As is known, a crane is one of the common lifting equipment in the production field. The crane's picking device is used to grab objects. However, due to the shape of the objects to be grabbed, it is often necessary to improve the shape of the beam in the picking device, thereby changing the beam to a special-shaped beam.

[0003] In addition, the traditional processing of the beam involves fixing the blank part on the lathe with a three-jaw hydraulic chuck, and then rough-turning the cylindrical surface of one end, re-clamping it after unlathe, rough-turning the cylindrical surface of the other end, re-clamping it after unlathe, turning the lower end face, re-clamping it after unlathe, and turning the bearing chamber and inner hole of the upper end face. However, due to the small clamping space of the three-jaw chuck, when processing different parts of the beam, it is necessary to re-clamp it after unlathe. This results in more processing steps for the beam and low processing efficiency.

[0004] Therefore, in summary, the market currently needs a special-shaped beam that can meet the needs of grasping special objects, as well as a processing method with high processing efficiency. Summary of the Invention

[0005] In order to overcome the deficiencies in the background technology, the present invention discloses a special-shaped crossbeam of a crane and a processing method thereof.

[0006] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0007] A special-shaped crossbeam for a crane comprises a cylindrical connecting portion and two quadrangular prism-shaped shaft ends. The top end surface of the connecting portion is provided with a bearing chamber, and the bottom end surface of the connecting portion is provided with a through hole corresponding to the bearing chamber. The tails of the two shaft ends are fixed to the outer edge surface of the connecting portion, and the two shaft ends are arranged in a mirror image, and the heads of the two shaft ends are cylindrical ends.

[0008] The processing method of special-shaped beams is:

[0009] 1) Clamp the special-shaped beam blank part on the floating clamping device of the lathe;

[0010] 2) First, process the bottom end surface of the connection part and use a turning tool to machine half of the through hole;

[0011] 3) Then rotate the floating clamping device 90° along the horizontal plane;

[0012] 4) Use a turning tool to turn the head of one shaft end into a cylinder;

[0013] 5) Next, rotate the floating clamping device 90° along the horizontal plane;

[0014] 6) Process the top surface of the connection part and use a turning tool to machine out the bearing chamber and the other half of the through hole;

[0015] 7) Finally, rotate the floating clamping device 90° along the horizontal plane;

[0016] 8) Use a turning tool to machine the head cylinder of the other shaft end;

[0017] The floating clamping device includes a hydraulic chuck, an upper jaw assembly, a lower jaw assembly and a floating holder; the tail end of the hydraulic chuck is correspondingly connected to the clamping end of the lathe, and the head end of the hydraulic chuck is provided with a processing groove, in which an upper jaw assembly and a lower jaw assembly capable of cooperating to clamp the special-shaped crossbeam are provided, wherein the upper jaw assembly is located on the top surface of the processing groove, and the upper jaw assembly is correspondingly connected to the telescopic end of the hydraulic chuck for rotation, and the lower jaw assembly is correspondingly located on the bottom surface of the processing groove, and the lower jaw assembly is correspondingly connected to the hydraulic chuck through a rotating drive shaft, and a floating holder for placing the special-shaped crossbeam is provided on the top of the lower jaw assembly;

[0018] The floating retainer includes an annular base and a placement ring with a deformation function, wherein the annular base is installed on the top of the lower clamping claw assembly, the placement ring is installed on the top surface of the annular base, and the connecting portion of the special-shaped beam corresponds to and conflicts with the inner edge surface of the placement ring.

[0019] Preferably, an anti-collision column is provided on the top surface of the lower clamping jaw assembly, and the anti-collision column is located at the center of the annular base.

[0020] Preferably, the top surface of the lower jaw assembly is set as a groove surface, and the vertical cross-section of the lower jaw assembly is an inverted trapezoid.

[0021] Preferably, both ends of the upper clamping jaw assembly and the lower clamping jaw assembly are provided with clamping blocks corresponding to the ends of the special-shaped crossbeam shafts.

[0022] Preferably, the end surface of the clamping block corresponding to the axial end of the special-shaped beam is provided with two wedge-shaped blocks, and the inclined surfaces of the two wedge-shaped blocks are arranged opposite to each other.

[0023] Due to the adoption of the above-mentioned technical solution, the present invention has the following beneficial effects:

[0024] The present invention discloses a special-shaped crossbeam for a crane and a processing method thereof, which can effectively reduce the volume of parts by separately arranging the connecting portion and the shaft end of the special-shaped crossbeam;

[0025] In addition, the processing surface of the special-shaped beam is changed by rotating the floating clamping device, avoiding the defect of re-clamping of the traditional three-jaw chuck and effectively improving the processing efficiency of the special-shaped beam;

[0026] By driving the upper jaw assembly downward through the hydraulic chuck in the floating clamping device, the special-shaped beam can be fixed together with the lower jaw assembly. At the same time, the deformation of the placement ring on the floating retaining frame can make the connection between the clamping device and the special-shaped beam correspondingly adapted, thereby improving the degree of fixation of the special-shaped beam by the clamping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A structural schematic diagram of the present invention;

[0028] Figure 2 It is a structural diagram of the floating clamping device.

[0029] In the figure: 1. Connecting part; 2. Shaft end; 3. Lathe; 4. Floating clamping device; 401. Hydraulic chuck; 4011. Processing groove; 402. Upper clamping jaw assembly; 403. Lower clamping jaw assembly; 4031. Groove surface; 404. Annular base; 405. Placement ring; 406. Anti-collision column; 407. Block; 408. Wedge block; 5. Turning tool. DETAILED DESCRIPTION

[0030] The technical solutions of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" and the like indicating directions or positional relationships, these are merely for the purpose of corresponding to the drawings of the present invention and for the convenience of describing the present invention. They do not indicate or imply that the devices or components referred to must have a specific direction.

[0031] Combined with attachment Figure 1-2 The special-shaped crossbeam and processing method of a crane:

[0032] The special-shaped crossbeam includes a cylindrical connecting portion 1 and two quadrangular prism-shaped shaft ends 2. The top end surface of the connecting portion 1 is provided with a bearing chamber, and the bottom end surface of the connecting portion 1 is provided with a through hole corresponding to the bearing chamber. The tails of the two shaft ends 2 are fixed on the outer edge surface of the connecting portion 1, and the two shaft ends 2 are mirror-imaged, and the heads of the two shaft ends 2 are cylindrical ends. By separating the connecting portion 1 and the shaft ends 2 in the special-shaped crossbeam, the volume of the parts can be effectively reduced.

[0033] The processing method of special-shaped beams is:

[0034] 1) Clamp the special-shaped beam blank part onto the floating clamping device 4 of the lathe 3;

[0035] 2) First, process the bottom end surface of the connecting part 1 and use the turning tool 5 to machine half of the through hole;

[0036] 3) Then rotate the floating clamping device 4 90° along the horizontal plane;

[0037] 4) Use turning tool 5 to turn the head of the shaft end 2 to form a cylinder;

[0038] 5) Next, the floating clamping device 4 is rotated 90° along the horizontal plane;

[0039] 6) Process the top surface of the connecting part 1 and use the turning tool 5 to process the bearing chamber and the other half of the through hole;

[0040] 7) Finally, rotate the floating clamping device 4 90° along the horizontal plane;

[0041] 8) Use turning tool 5 to machine the head cylinder of the other shaft end 2;

[0042] The processing surface of the special-shaped beam is changed by rotating the floating clamping device 4, which avoids the defect of re-clamping of the traditional three-jaw chuck and effectively improves the processing efficiency of the special-shaped beam;

[0043] The floating clamping device 4 includes a hydraulic chuck 401, an upper jaw assembly 402, a lower jaw assembly 403 and a floating holder 4; the tail end of the hydraulic chuck 401 is correspondingly connected to the clamping end of the lathe 3, and the head end of the hydraulic chuck 401 is provided with a processing groove 4011, which can not interfere with the rotation of the special-shaped beam, and the processing groove 4011 is provided with an upper jaw assembly 402 and a lower jaw assembly 403 that can cooperate to clamp the special-shaped beam, wherein the upper jaw assembly 402 is located on the top surface of the processing groove 4011, and the upper jaw assembly 402 is correspondingly connected to the telescopic end of the hydraulic chuck 401, that is, on the one hand, the telescopic end can drive the upper jaw assembly 402 to move up and down, and on the other hand, the upper jaw assembly 402 can also rotate along the telescopic end;

[0044] The lower clamping jaw assembly 403 is located at the bottom surface of the processing groove 4011, and the lower clamping jaw assembly 403 is connected to the hydraulic chuck 401 through a rotating drive shaft. The rotating drive shaft can drive the lower clamping jaw assembly 403 to rotate along the horizontal plane, thereby driving the special-shaped beam and the upper clamping jaw assembly 402 to rotate together, so as to achieve the purpose of changing the processing surface of the special-shaped beam. A floating holder for placing the special-shaped beam is provided on the top of the lower clamping jaw assembly 403. Since the diameter of the connecting portion 1 of the special-shaped beam is larger than the diameter of the two shaft ends 2, The diameter of the connecting portion 1 is such that the portion of the outer edge thereof not connected to the shaft end 2 is in a protruding state. The floating cage is capable of adapting to the protruding portion of the connecting portion 1 through its own deformation after the upper and lower clamping jaw assemblies 403 have completed clamping the special-shaped crossbeam, thereby avoiding hard friction between the connecting portion 1 of the special-shaped crossbeam and the upper and lower clamping jaw assemblies 403, thereby protecting the crossbeam. In addition, the deformation capability of the floating cage also enables the floating clamping device 4 to adapt to parts of various shapes, thereby improving the applicability of the device.

[0045] In addition, the top surface of the lower clamping jaw assembly 403 is provided with an anti-collision column 406, and the anti-collision column 406 is located at the center of the annular base 404. The anti-collision column 406 can support the bottom of the special-shaped beam when the special-shaped beam is in a clamped state, thereby preventing the special-shaped beam from falling into the annular base 404 and generating hard friction with the inner ring surface of the annular base 404, thereby further improving the protection effect of the special-shaped beam. In particular, the top surface of the lower clamping jaw assembly 403 is set as a groove surface 4031, and the vertical cross-section of the lower clamping jaw assembly 403 is an inverted trapezoid. The groove surface 4031 can facilitate the installation of the floating retainer and can avoid the special-shaped beam from being connected. The protruding part of the connecting portion 1; as needed, both ends of the upper clamping jaw assembly 402 and the lower clamping jaw assembly 403 are provided with clamping blocks 407 corresponding to the axial end 2 of the special-shaped beam, and the two axial ends 2 of the special-shaped beam can be clamped by the four clamping blocks 407, thereby achieving the clamping of the special-shaped beam as a whole; in addition, the end surface of the clamping block 407 corresponding to the axial end 2 of the special-shaped beam is provided with two wedge blocks 408, and the inclined surfaces of the two wedge blocks 408 are arranged opposite to each other, and the inclined surfaces of the two wedge blocks 408 are in conflict with the surface of the axial end 2 of the special-shaped beam, and the clamping of the axial end 2 of the special-shaped beam is completed by the joint cooperation of the clamping block 407 and the two wedge blocks 408;

[0046] The floating retaining frame includes an annular base 404 and a placement ring 405 with a deformation function, wherein the annular base 404 is installed on the top of the lower clamping jaw assembly 403, and the placement ring 405 is installed on the top surface of the annular base 404, and the connecting portion 1 of the special-shaped beam corresponds to and conflicts with the inner edge surface of the placement ring 405. In the process of the upper clamping jaw assembly 402 pressing down the special-shaped beam, the special-shaped beam will gradually sink into the placement ring 405, thereby generating extrusion between the special-shaped beam and the inner ring surface of the placement ring 405, so that the placement ring 405 also forms an encircling clamp for the special-shaped beam, thereby ensuring the stability of the special-shaped beam after being clamped.

[0047] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

Claims

1. A special-shaped crossbeam for a crane, characterized by: The invention comprises a cylindrical connecting portion (1) and two quadrangular prism-shaped shaft ends (2), wherein the top end surface of the connecting portion (1) is provided with a bearing chamber, and the bottom end surface of the connecting portion (1) is provided with a through hole corresponding to and communicating with the bearing chamber, and the tails of the two shaft ends (2) are fixedly located on the outer edge surface of the connecting portion (1), and the two shaft ends (2) are mirror-imaged, and the heads of the two shaft ends (2) are cylindrical ends; The processing method of the special-shaped crossbeam of the crane is: 1) Clamp the special-shaped beam blank part onto the floating clamping device (4) of the lathe (3); 2) First, process the bottom end surface of the connecting portion (1) and use a turning tool (5) to machine out half of the through hole; 3) Then rotate the floating clamping device (4) 90° along the horizontal plane; 4) Use a turning tool (5) to machine a cylinder from the head of one of the shaft ends (2); 5) Next, rotate the floating clamping device (4) 90° along the horizontal plane; 6) Process the top surface of the connecting part (1) and use the turning tool (5) to process the bearing chamber and the other half of the through hole; 7) Finally, rotate the floating clamping device (4) 90° along the horizontal plane; 8) Using a turning tool (5), a head cylinder is machined out of the other shaft end (2); The floating clamping device (4) comprises a hydraulic chuck (401), an upper clamping jaw assembly (402), a lower clamping jaw assembly (403) and a floating retaining frame; the tail end of the hydraulic chuck (401) is correspondingly connected to the clamping end of the lathe (3); the head end of the hydraulic chuck (401) is provided with a processing groove (4011), and the processing groove (4011) is provided with an upper clamping jaw assembly (402) and a lower clamping jaw assembly (403) capable of cooperating to clamp the special-shaped crossbeam. The upper middle jaw assembly (402) is located on the top surface of the processing groove (4011), and the upper jaw assembly (402) is correspondingly connected to the telescopic end of the hydraulic chuck (401), the lower jaw assembly (403) is correspondingly located on the bottom surface of the processing groove (4011), and the lower jaw assembly (403) is correspondingly connected to the hydraulic chuck (401) through a rotating drive shaft, and a floating retainer for placing a special-shaped crossbeam is provided on the top of the lower jaw assembly (403); The floating retainer comprises an annular base (404) and a placement ring (405) with a deformation function, wherein the annular base (404) is installed on the top of the lower claw assembly (403), the placement ring (405) is installed on the top surface of the annular base (404), and the connecting portion (1) of the special-shaped beam is in contact with the inner edge surface of the placement ring (405).

2. The special-shaped crossbeam of a crane according to claim 1, characterized in that: An anti-collision column (406) is provided on the top surface of the lower clamping claw assembly (403), and the anti-collision column (406) is located at the center of the annular base (404).

3. The special-shaped crossbeam of a crane according to claim 1, characterized in that: The top surface of the lower clamping jaw assembly (403) is set as a groove surface (4031), and the vertical cross-section of the lower clamping jaw assembly (403) is an inverted trapezoid.

4. The special-shaped crossbeam of a crane according to claim 1, characterized in that: Both ends of the upper clamping claw assembly (402) and the lower clamping claw assembly (403) are provided with clamping blocks (407) corresponding to the axial ends (2) of the special-shaped crossbeam.

5. The special-shaped crossbeam of a crane according to claim 4, characterized in that: The end surface of the clamping block (407) corresponding to the axial end (2) of the special-shaped beam is provided with two wedge-shaped blocks (408), and the inclined surfaces of the two wedge-shaped blocks (408) are arranged opposite to each other.

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