Machining device for inner hole and plane of large port crane pull rod

Abstract

The utility model provides a large port crane pull rod inner hole and plane machining device which comprises at least one group of boring mills, at least two boring rods and at least one group of fixing supports, and a pull rod fixing device and at least one group of boring rod supports are installed on the fixing supports. The two ends of a pull rod to be machined are fixed to the corresponding pull rod fixing devices respectively, and the boring rod supports are located on the two sides of the ends of the pull rod to be machined. One end of each boring bar is connected with the corresponding boring machine, and the other end of each boring bar penetrates through the end of the pull rod to be machined, is arranged on the boring bar support in a penetrating mode and is used for inner hole machining of the pull rod to be machined. According to the utility model, the same group of boring machine and boring bar is adopted to process the lug plate inner hole and the heavy plate plane of the pull rod, and after the lug plate inner hole and the heavy plate plane at one end of the pull rod are processed, the slender pull rod does not need to be lifted to other processing stations in an operation area again, and the lug plate inner hole and the heavy plate plane of the pull rod at the other end can be processed at the original station.

Description

Technical Field

[0001] The utility model relates to the field of port cranes, in particular to a processing device for the inner hole and plane of a pull rod of a large port crane. Background Art

[0002] In the rod system of a large port crane, the rear rod connects the sea-side ladder frame and the rear beam and is fixed. Its structural form is generally a tube structure, a box beam structure, an H-shaped structure, or a single plate structure. The front rod connects the sea-side ladder frame and the front beam. To adapt to the pitch of the front beam, the front rod is hinged and foldable. Its structural form is generally a single plate structure or an H-shaped structure.

[0003] The tie rod of a large port crane is a very important component with a high risk of fracture. It is manufactured and inspected according to AWSD1.5 standard, and the welds in important parts are required to pass 100% UT+MT non-destructive testing.

[0004] Since the slenderness ratio of the front tie rod is greater than 60, the deadweight produces a certain amount of downward deflection, and the additional bending moment generated by the eccentric sleeve installed at the lower end of the front tie rod is required to make the tie rod arch upward. After the front and rear tie rods are loaded, the stress distribution ratio of the front and rear tie rods is measured to be 70:30 (±4%), and the error of the left and right tie rods is within 15%.

[0005] The manufacturing quality of the front and rear tie rods of the crane, the processing dimensional accuracy of the inner hole of the tie rod ear plate and the plane of the heavy plate are directly related to the accurate installation of the tie rod system pin and the front tie rod eccentric sleeve, and affect the correct distribution of the tie rod stress.

[0006] Therefore, under the principle of ensuring safety, construction efficiency and taking into account benefits, the utility model applicant has designed a processing device for the inner hole and plane of the pull rod of a large port crane, in order to overcome the above-mentioned technical problems. Utility Model Content

[0007] The technical problem to be solved by the utility model is to overcome the defects in the prior art that the manufacturing quality and processing size accuracy of the crane tie rod need to be further improved and optimized, and to provide a processing device for the inner hole and plane of the tie rod of a large port crane.

[0008] The utility model solves the above technical problems through the following technical solutions:

[0009] A processing device for the inner hole and plane of a tie rod of a large port crane, characterized in that the processing device comprises at least one boring machine, at least two boring bars and at least one fixed support, a tie rod fixing device and at least one boring bar bracket are installed on the fixed support, the two ends of the tie rod to be processed are respectively fixed on the corresponding tie rod fixing devices, and the boring bar brackets are located on both sides of the ends of the tie rod to be processed;

[0010] One end of the boring bar is connected to the corresponding boring machine, and the other end passes through the end of the draw rod to be processed and is inserted into the boring bar bracket for processing the inner hole of the draw rod to be processed.

[0011] According to one embodiment of the utility model, the tie rod fixing device includes a tie rod base fixing device and a tie rod upper fixing device, the tie rod base fixing device is installed on the fixed support, and is used to fix the bottom of the tie rod to be processed; the tie rod upper fixing device is installed on the boring bar bracket, and is used to fix the upper part of the tie rod to be processed.

[0012] According to an embodiment of the utility model, the processing device further comprises a plurality of rollers, and the rollers are installed at the lower part of the pull rod to be processed and are used to support the pull rod to be processed.

[0013] According to an embodiment of the utility model, the processing device further comprises a plane processing tool row, and the plane processing tool row is installed on the boring bar and is located on the end side of the draw rod to be processed, and is used for processing the plane.

[0014] According to one embodiment of the utility model, the plane machining tool row includes a tool holder, a base, a tool, a slide and a screw, the base is fixed on the tool holder, the screw is installed in the base, the slide is slidably connected to the outer surface of the base, the tool is installed on the slide, and the tool faces the end side of the pull rod to be processed.

[0015] According to an embodiment of the utility model, a rotating tooth portion is provided at the top end of the screw rod, and a protrusion is provided on the inner side of the upper fixing device of the pull rod, and the rotating tooth portion is moved by the protrusion, thereby causing the screw rod to rotate.

[0016] According to an embodiment of the utility model, the tool holder includes two parts, an upper part and a lower part, which are clamped on the corresponding boring bar.

[0017] According to an embodiment of the utility model, the boring machine is located on the side of the fixed support.

[0018] The positive and progressive effects of the utility model are:

[0019] The utility model of the processing device for the inner hole and plane of the pull rod of a large port crane has the following advantages:

[0020] 1. Use the same set of boring machines and boring bars to process the inner hole of the ear plate and the plane of the heavy plate of the tie rod. After processing the inner hole of the ear plate and the plane of the heavy plate at one end of the tie rod, there is no need to lift the slender tie rod to other processing stations in the work area again. The inner hole of the ear plate and the plane of the heavy plate of the tie rod at the other end can be processed at the original station.

[0021] 2. The boring bar can be equipped with one tool for machining the inner hole of the tie rod ear plate, or two tools can be equipped for finishing the inner hole of the double ear plate of the tie rod at the same time. The plane machining tool row is clamped on the boring bar, and the maximum machining diameter range of the tool row can reach φ1000mm, which effectively meets the verticality requirements of the heavy plate plane and the inner hole of the tie rod processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always represent the same features, wherein:

[0023] Figure 1 It is a stereoscopic diagram of a device for processing the inner hole and plane of a pull rod of a large port crane according to the utility model.

[0024] Figure 2 The utility model is a schematic diagram of inner hole processing in a device for processing inner holes and planes of a pull rod of a large port crane.

[0025] Figure 3 It is a schematic diagram of the heavy plate plane processing in the device for processing the inner hole and plane of the pull rod of a large port crane of the utility model.

[0026] Figure 4 The utility model is a schematic structural diagram of positioning one end portion of a tie rod in a device for processing the inner hole and plane of a tie rod of a large port crane.

[0027] Figure 5 The utility model is a schematic structural diagram of positioning the other end of the tie rod in the processing device for the inner hole and plane of the tie rod of a large port crane.

[0028] Figure 6 The utility model is a schematic diagram of the structure of the plane processing cutter row in the processing device for the inner hole and plane of the pull rod of a large port crane.

[0029] Figure 7 The utility model is a processing flow chart of the processing device for processing the inner hole and plane of the pull rod of a large port crane.

[0030] Figure 8 It is a schematic diagram of a rod processing line and an inspection line in a device for processing inner holes and planes of a rod of a large port crane according to the utility model.

[0031] Fig. 9 It is a front view of the arrangement of the processing device for the inner hole and plane of the pull rod of a large port crane according to the utility model.

[0032] Fig.10 The utility model is a top view of the arrangement of the processing device for the inner hole and the plane of the pull rod of a large port crane.

[0033] Fig.11This is a front view of the installation of the fastening device in the processing device of the inner hole and plane of the pull rod of a large port crane according to the utility model.

[0034] Fig.12 The utility model is a top view of the installation of the fastening device in the processing device of the inner hole and plane of the pull rod of the large port crane.

[0035] Fig.13 This is a device for processing the inner hole and plane of a pull rod of a large port crane according to the utility model, and a front view of the pull rod being moved along the longitudinal center line direction of the roller.

[0036] Fig.14 This is a device for processing the inner hole and plane of a pull rod of a large port crane according to the utility model, and a top view of the pull rod moving along the longitudinal center line direction of the roller.

[0037] [Reference Signs]

[0038] Boring machine 10

[0039] Boring rod 20

[0040] Fixed support 30

[0041] Boring bar holder 40

[0042] Rod to be processed 50

[0043] Ear plate 51

[0044] Ear plate inner hole 52

[0045] Tie rod base fixing device 60

[0046] Tie rod upper fixing device 70

[0047] Roller 80

[0048] Surface machining tool row 100

[0049] Tool holder 110

[0050] Base 120

[0051] Tool 130

[0052] Slide 140

[0053] Screw 150 DETAILED DESCRIPTION

[0054] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0055] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.Preferred embodiments of the present invention will now be described in detail, examples of which are shown in the accompanying drawings.Where possible, the same reference numerals will be used throughout the drawings to represent the same or similar parts.

[0056] In addition, although the terms used in the present invention are selected from well-known and commonly used terms, some terms mentioned in the specification of the present invention may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article.

[0057] Furthermore, it is required that the present invention be understood not only by the actual terms used but also by the meanings contained in each term.

[0058] like Figures 1 to 6 As shown, the utility model discloses a processing device for the inner hole and plane of a tie rod of a large port crane, which comprises at least one boring machine 10, at least two boring bars 20 and at least one fixed support 30. A tie rod fixing device and at least one boring bar bracket 40 are installed on the fixed support 30, and the two ends of the tie rod 50 to be processed are respectively fixed on the corresponding tie rod fixing devices, and the boring bar bracket 40 is located on both sides of the ends of the tie rod 50 to be processed.

[0059] One end of the boring bar 20 is connected to the corresponding boring machine 10 , and the other end passes through the end of the drawbar 50 to be processed and is arranged on the boring bar bracket 40 for processing the inner hole of the drawbar 50 to be processed. The boring machine 10 is located at the side of the fixed support 30 .

[0060] Preferably, the tie rod fixing device includes a tie rod base fixing device 60 and a tie rod upper fixing device 70, and the tie rod base fixing device 60 is installed on the fixing support 30 to fix the bottom of the tie rod 50 to be processed. At the same time, the tie rod upper fixing device 70 is installed on the boring bar bracket 40 to fix the upper part of the tie rod 50 to be processed.

[0061] Furthermore, the processing device also includes a plurality of rollers 80 , which are installed at the lower part of the tie rod 50 to be processed to support the tie rod 50 to be processed.

[0062] Furthermore, if Figure 6 As shown, the processing device further includes a plane processing tool row 100, which is installed on the boring bar 20 and located on the end side of the drawbar 50 to be processed for processing the plane.

[0063] The plane machining tool row 100 includes a tool holder 110, a base 120, a tool 130, a slide 140 and a screw 150. The base 120 is fixed on the tool holder 110, the screw 150 is installed in the base 120, the slide 140 is slidably connected to the outer surface of the base 120, and the tool 130 is installed on the slide 140, and the tool 130 faces the end side of the pull rod 50 to be machined.

[0064] A rotating tooth portion 151 is provided at the top of the screw rod 150, and a protrusion (not shown) is provided on the inner side of the upper fixing device 70 of the pull rod, and the rotating tooth portion 151 is moved by the protrusion, so that the screw rod 150 rotates. Preferably, the tool holder 110 includes upper and lower parts, which are clamped on the corresponding boring bar 20.

[0065] like Figures 7 to 12 As shown, for the processing device of the utility model for the inner hole and plane of the pull rod of a large port crane, the processing method thereof includes the following steps:

[0066] Step S 1 , production and completion inspection of the pull rods to be processed.

[0067] Preferably, the step S 1 The straightness of the rod to be processed is less than or equal to 2 mm, and the twist of the rod is less than or equal to 2.5 mm. The rod to be processed is preferably an H-shaped rod.

[0068] The straightness of the tie rod should reach the best state after correction, and the straightness is strictly prohibited to exceed 2mm. Control the twist of the tie rod, and it is not allowed to exceed 2.5mm after the tie rod is completed and corrected. The flatness of the web of the front tie rod is f≤2mm / m, the flatness of the upper and lower wing plates and ear plates is f≤1mm / m, and the flatness of the ear plate of the rear tie rod is f≤1mm / m.

[0069] The opening deviation of the ear plate: △B≤1 / 250B (B is the inner opening size of the ear plate required by the drawing). The maximum allowable deviation of the center-to-center size of the ear plate holes at both ends of the tie rod is within the design allowable range, as shown in Table 1 below.

[0070] Step S 2 , marking the ear plate 51 and the plane processing position of the pull rod to be processed.

[0071] like Figure 8 As shown, check and adjust the tie rod to make it horizontal, and mark the tie rod processing dimension line and inspection line.

[0072] Step S 3 , arrange processing equipment and tooling parts.

[0073] like Fig. 9 and Fig.10As shown, two boring machines A and B of the same model are used as the same set of tie rod processing equipment. The horizontal height C of the boring bars, the center height C of the boring bar bracket, the horizontal center line height C of the roller, and the parallelism D of the two boring bars of the two boring machines A and B are measured and adjusted.

[0074] Measure and adjust the 90° verticality of the two boring bars, the rollers and the longitudinal center lines of the boring bar brackets so that the layout of the processing equipment and tooling meets the requirements before the pull rod processing, and fix the horizontal and vertical positions of the boring machines A, B and the boring bar brackets and rollers.

[0075] Step S 4 , position the pull rod to be processed and install the fastening device.

[0076] like Fig.11 and Fig.12 As shown, the rod 50 to be processed is placed horizontally on the roller, and the horizontal center height and verticality of the rod to be processed are adjusted so that the center of the processing line of the ear plate hole at one end of the rod 50 to be processed coincides with the center of the boring bar 20, and the upper fixture 70 and the bottom fixture 60 of the rod to be processed are installed. After the boring bar is clamped with the tool, the boring bar is moved to align the tool, and the horizontal height and verticality of the rod ear plate are finely adjusted. After the concentricity requirements of the double ear plate rod hole processing line center and the boring bar center of the H-shaped rod are met, the upper device and the bottom fixture of the rod ear plate are tightened.

[0077] Step S 5 , process the inner hole 52 of the ear plate at the first end of the pull rod to be processed and the plane of the heavy plate.

[0078] According to the inner hole processing line of the tie rod ear plate, a boring tool is used to rough-process the inner hole of the ear plate at one end of the tie rod. After checking that the position and diameter of the inner hole are correct, two boring tools can be used to fine-process the inner hole of the ear plate. The inner hole of the ear plate at one end of the tie rod can be fine-processed to meet the design size tolerance requirements.

[0079] After the inner hole of the ear plate at one end of the tie rod is processed, a special plane processing cutter row is installed on the boring bar. The maximum processing diameter range of the cutter row can reach φ1000mm. The plane of the tie rod heavy plate is processed to the design size requirements, such as Figure 4 and Figure 5 shown.

[0080] Step S 6 , the pull rod to be processed moves along the longitudinal center line direction of the roller.

[0081] Step S 7 , process the inner hole of the ear plate at the second end of the pull rod to be processed and the plane of the heavy plate.

[0082] After the inner hole at one end of the tie rod ear plate and the plane of the heavy plate are processed, there is no need to lift the slender tie rod again to other processing stations in the operation area. Turn the roller to make the tie rod move horizontally along the longitudinal center line of the roller. Fig.13 and Fig.14 shown.

[0083] Press step S 4 Locate the center of the ear plate hole at the other end of the tie rod to the center of the boring bar and follow step S 5 Process the inner hole of the ear plate and the plane of the heavy plate at the other end of the tie rod to the design dimensional tolerance requirements. After completion, check the tolerance of the inner hole of the tie rod and the plane of the heavy plate of the tie rod to meet the dimensional tolerance requirements of the drawing.

[0084] Step S 8 , completion inspection of the pull rod to be processed after processing.

[0085]

[0086] Table 1: Tie rod production and completion inspection parameter table

[0087] In summary, the processing device for the inner hole and plane of the pull rod of a large port crane of the utility model has the following advantages:

[0088] 1. Use the same set of boring machines and boring bars to process the inner hole of the ear plate and the plane of the heavy plate of the tie rod. After processing the inner hole of the ear plate and the plane of the heavy plate at one end of the tie rod, there is no need to lift the slender tie rod to other processing stations in the work area again. The inner hole of the ear plate and the plane of the heavy plate of the tie rod at the other end can be processed at the original station.

[0089] 2. The boring bar can be equipped with one tool for machining the inner hole of the tie rod ear plate, or two tools can be equipped for finishing the inner hole of the double ear plate of the tie rod at the same time. The plane machining tool row is clamped on the boring bar, and the maximum machining diameter range of the tool row can reach φ1000mm, which effectively meets the verticality requirements of the heavy plate plane and the inner hole of the tie rod processing.

[0090] For those skilled in the art, the above utility model disclosure is only used as an example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary implementation of the present application.

[0091] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0092] Similarly, it should be noted that in order to simplify the description of the disclosure of this application and thus help understand one or more utility model embodiments, in the above description of the embodiments of this application, multiple features are sometimes combined into one embodiment, drawing or description thereof. However, this disclosure method does not mean that the features required by the object of this application are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

[0093] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications fall within the protection scope of the present invention.

Claims

1. A processing device for the inner hole and plane of a large port crane tie rod, characterized in that: The processing device comprises at least one boring machine, at least two boring bars and at least one fixed support, the fixed support is equipped with a tie rod fixing device and at least one boring bar bracket, the two ends of the tie rod to be processed are respectively fixed on the corresponding tie rod fixing devices, and the boring bar bracket is located on both sides of the ends of the tie rod to be processed; One end of the boring bar is connected to the corresponding boring machine, and the other end passes through the end of the draw rod to be processed and is inserted into the boring bar bracket for processing the inner hole of the draw rod to be processed.

2. The processing device for the inner hole and plane of the pull rod of a large port crane according to claim 1, characterized in that: The tie rod fixing device includes a tie rod base fixing device and a tie rod upper fixing device. The tie rod base fixing device is installed on the fixed support and is used to fix the bottom of the tie rod to be processed; the tie rod upper fixing device is installed on the boring bar bracket and is used to fix the upper part of the tie rod to be processed.

3. The processing device for the inner hole and plane of the pull rod of a large port crane according to claim 1, characterized in that: The processing device also includes a plurality of rollers, which are installed at the lower part of the pull rod to be processed and are used to support the pull rod to be processed.

4. The processing device for the inner hole and plane of the pull rod of a large port crane as claimed in claim 2, characterized in that: The processing device also includes a plane processing tool row, which is installed on the boring bar and is located on the end side of the drawbar to be processed and is used for processing the plane.

5. The processing device for the inner hole and plane of the pull rod of a large port crane according to claim 4, characterized in that: The plane machining tool row includes a tool holder, a base, a tool, a slide and a screw, the base is fixed on the tool holder, the screw is installed in the base, the slide is slidably connected to the outer surface of the base, the tool is installed on the slide, and the tool faces the end side of the pull rod to be processed.

6. The processing device for the inner hole and plane of the pull rod of a large port crane as claimed in claim 5, characterized in that: The top end of the screw rod is provided with a rotating tooth portion, and the inner side of the upper fixing device of the pull rod is provided with a protrusion, and the rotating tooth portion is moved by the protrusion, so that the screw rod is rotated.

7. The processing device for the inner hole and plane of the pull rod of a large port crane according to claim 6, characterized in that: The tool holder comprises an upper and a lower part, which are clamped on the corresponding boring bar.

8. The processing device for the inner hole and plane of the pull rod of a large port crane according to claim 1, characterized in that: The boring machine is located on the side of the fixed support.

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