Milling and drilling combined machining device for rotary trolley of large portal crane

Abstract

The utility model discloses a milling and drilling combined machining device for a rotary trolley of a large gantry crane, which comprises a base, a cross beam arranged at the top of the base through a rotary transmission mechanism, a vertical milling and drilling module slidably mounted on the side surface of the left end of the cross beam, a rotary turning module mounted at the lower part of the left end of the cross beam, and a horizontal milling and drilling module mounted at the lower part of the right end of the cross beam, the rotary transmission mechanism comprises a stand column, the stand column is installed on the base through a lifting mechanism, a rotary support is arranged at the top of the stand column and is a disc-shaped support, the rotary support is provided with a center shaft, a rotary support gear is arranged on the outer surface of the disc-shaped support, and the center of the cross beam is installed on the center shaft of the rotary support through a bearing. A rotary driving module is arranged in the center of the cross beam and is a rotary speed reducer, a rotary pinion is arranged on an output shaft of the rotary speed reducer, and the rotary pinion is meshed with the rotary supporting gear. The utility model has the advantages of composite function, wide application range, multiple purposes, high efficiency, good processing quality and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of machining equipment, and concretely relates to a turning-milling-drilling combined integrated machining machine designed for a large portal crane rotary table. BACKGROUND

[0002] With the increase of port construction scale, the port equipment capacity also increases synchronously, and the portal crane with super large lifting capacity gradually increases, especially the order quantity of 500-ton super large portal crane increases dramatically. The upper support ring of the portal crane has large manufacturing size (the maximum outer diameter is 19.56 meters) and total weight of 108 tons, and the product structure is complex and the manufacturing process is difficult. After overall welding, 3 layers of 278 Φ85 holes need to be vertically drilled on the 16273.4 circumference, the inner raceway needs to be turned on the Φ11280 raceway, and horizontal drilling is needed on the raceway. The common general machining equipment cannot complete the machining of such structural parts as the large portal crane, and special machine equipment needs to be designed and manufactured to meet the machining content of the structural parts and ensure the design precision of the product. At present, there is no turning-milling-drilling combined machining machine on the market that can machine the steel structure as a whole. SUMMARY

[0003] In order to meet the machining precision of the upper support ring of the super large portal crane, the utility model provides a large portal crane rotary table turning-milling-drilling combined machining device. This set of device can meet the machining of the portal crane with a tonnage greater than 500 tons and the machining of the portal crane with an upper support ring structure with a tonnage less than 500 tons. After installation and adjustment, the device can perform turning, milling and drilling functions, has the advantages of high overall machining quality, high machining efficiency and low machining cost, and has certain innovation, practicality and popularization value.

[0004] The utility model aims to achieve the following:

[0005] A large portal crane rotary table turning-milling-drilling combined machining device, comprising a base, a cross beam arranged on the top of the base through a rotary transmission mechanism, a vertical milling and drilling module slidingly installed on the left end side of the cross beam, a rotary turning module installed on the lower part of the left end of the cross beam, the cross beam being a hollow beam, a turning linear guide rail arranged on the bottom of the right end of the cross beam, the turning module being slidingly installed on the turning linear guide rail, a horizontal milling and drilling module installed on the lower part of the right end of the cross beam, the rotary transmission mechanism comprising a stand column, the stand column being installed on the base through a lifting mechanism, a rotary support arranged on the top of the stand column, the rotary support being a disc-shaped support, a central shaft arranged on the rotary support, a rotary support gear arranged on the outer surface of the disc-shaped support, the center of the cross beam being installed on the central shaft of the rotary support through a bearing, the center of the cross beam being provided with a rotary drive module, the rotary drive module being a rotary speed reducer, a rotary pinion gear arranged on the output shaft of the rotary speed reducer, the rotary pinion gear being engaged with the rotary support gear.

[0006] The lifting mechanism is a jack, the telescopic end of the jack is connected to the bottom of the stand, and the bottom of the jack is mounted on the base.

[0007] The stand is a cylindrical stand, and the jack is at least three, which are evenly distributed between the cylindrical stand and the base.

[0008] The milling and drilling linear guide and the milling and drilling rack are mounted on the left end side of the cross beam, the vertical milling and drilling module is mounted on the milling and drilling seat, the milling and drilling seat side is provided with a milling and drilling sliding block connected with the milling and drilling linear guide rail pair, the milling and drilling seat is provided with a sliding drive device, and the rotating shaft of the sliding drive device is provided with a sliding gear engaged with the milling and drilling rack.

[0009] The sliding drive device is a speed reducer.

[0010] The base is provided with a plurality of support strips around the bottom of the base for adjusting the support ring on the workpiece.

[0011] The rotary speed reducer is provided with an encoder, the encoder is connected with the industrial computer, and the vertical milling and drilling module, the rotary turning module and the rotary turning module are connected with the industrial computer.

[0012] The rotary turning module includes a first hanger, a turning tool holder is arranged on the left side of the first hanger, a turning linear guide and a turning rack are arranged in the turning cross beam, a turning sliding groove is arranged on the bottom of the cross beam corresponding to the turning linear guide, the first hanger top extends into the cross beam through the turning sliding groove and is fixedly connected with a sliding plate box, a guide rail groove is arranged on the bottom of the sliding plate box, the guide rail groove and the turning linear guide constitute a turning linear guide pair, a turning speed reducer motor is mounted on the side surface of the sliding plate box, a turning sliding gear is mounted on the output shaft of the turning speed reducer motor, and the turning sliding gear and the turning rack are engaged with each other.

[0013] The large gantry crane rotary table car milling and drilling composite machining device further includes a second hanger, the second hanger is composed of an H-shaped steel and a steel plate, the horizontal milling and drilling module is mounted on the platform of the second hanger, a vertical frame is mounted on the bottom of the cross beam, a screw rod is vertically mounted in the center of the vertical frame, a dovetail groove hard rail is mounted on the top of the platform, the dovetail groove hard rail and the vertical frame constitute a horizontal milling and drilling guide pair, a screw rod hole is arranged on the dovetail hard rail, a screw rod and a screw rod hole screw pair are connected, and the top of the screw rod is connected with the output shaft of the speed reducer.

[0014] The horizontal milling and drilling module comprises a milling and drilling power head, and a drill bit of the milling and drilling power head is installed on the milling and drilling power head.

[0015] Compared with the prior art, the utility model has the following technical effects:

[0016] 1、 The utility model discloses novel design, and the turning, milling and drilling are integrated, and the utility model has multiple functions, compact structure, convenient installation and easy production.

[0017] 2、 The device is assembled in modules, and each module can be separately installed and used, or can be assembled together and processed in separate periods, so that the operation efficiency is high, the quality is stable and accurate.

[0018] 3、 Because large workpieces (diameter 19 meters, weight 108 tons) are very difficult to transfer and process, the device can be placed in the middle and upper part of the workpiece to meet various processing requirements.

[0019] 4、 The T-shaped rotary structure of the intermediate column support + upper horizontal beam makes the rotation speed stable and accurate through the large reduction ratio of the motor encoder, the drilling division is uniform and consistent, the turning speed is infinitely adjustable, the torque is large, and the machining surface precision is high.

[0020] 5、 The vertical milling and drilling module assembled on the side of the beam can vertically drill and plane mill, and the milling and drilling linear guide and milling and drilling rack installed on the side can adapt to the circumferential drilling of different rotary diameters.

[0021] 6、 The rotary turning module is assembled on the left end lower part of the beam through the turning linear guide and turning rack installed in the beam, and can turn different rotary diameter raceways.

[0022] 7、 The horizontal milling and drilling module is assembled on the right end lower part of the beam, which can horizontally drill and vertically mill.

[0023] The utility model can meet the requirements of more than 500-ton super large tonnage gantry machine products and less than 500-ton gantry crane products with upper support ring structure, and can perform turning, milling and drilling after one-time installation and adjustment, has the advantages of high overall machining quality, high machining efficiency and low machining cost, and has certain innovation, practicality and popularization value.

[0024] The utility model has the advantages of composite function, wide application range, multiple functions, high efficiency, good machining quality, considerable economic benefits, reduced transfer of large equipment and solved problems of general large machining equipment. DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model.

[0026] Figure 2 Figure 1 is a schematic diagram of the connection between the beam and the column of the utility model.

[0027] Figure 3 Figure 2 is a schematic diagram of the connection between the vertical milling and drilling module and the beam of the utility model.

[0028] Figure 4 Figure 3 is a schematic diagram of the rotary turning module of the utility model.

[0029] Figure 5 Figure 4 is a schematic diagram of the connection between the rotary turning module and the beam of the utility model.

[0030] Figure 6 Figure 5 is a schematic diagram of the connection between the horizontal milling and drilling module and the beam of the utility model.

[0031] Figure 7 Figure 6 is a reference diagram of the use state of the utility model.

[0032] Figure 8 Figure 7 is an effect diagram of the use of the utility model. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model.

[0034] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0035] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not indicative or suggestive of the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0036] In the utility model, unless another definite provision and limitation, the terms "mount", "connect", "connect", "fix" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be directly connected, also can be indirectly connected through intermediate medium, can be two element internal communication or two element mutual action relation. For ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0037] The specific implementation method of the utility model is described below. Figures 1-8

[0038] A large portal crane rotary table car milling and drilling composite machining device, as shown in Figure 1 And Figure 6 As shown, it comprises a base 5, a cross beam 3 is arranged on the top of the base 5 through a rotary transmission mechanism 4, a vertical milling and drilling module 1 is slidably installed on the left end side of the cross beam 3, a rotary turning module 2 is installed on the left end lower part of the cross beam, the cross beam is a hollow beam, a turning linear guide rail is arranged on the right end bottom of the cross beam, a turning module is slidably installed on the turning linear guide rail, a horizontal milling and drilling module 6 is installed on the right end lower part of the cross beam, the rotary transmission mechanism 4 comprises a stand column 16, the stand column is installed on the base 5 through a lifting mechanism 17, a rotary support 23 is arranged on the top of the stand column, the rotary support is a disc-shaped support, a central shaft is arranged on the rotary support, a rotary support gear is arranged on the outer surface of the disc-shaped support, the center of the cross beam is installed on the central shaft of the rotary support through a bearing, the center of the cross beam is provided with a rotary drive module, the rotary drive module is a rotary speed reducer, a rotary pinion is arranged on the output shaft of the rotary speed reducer, the rotary pinion is engaged with the rotary support gear, the cross beam 3 is driven by the rotary drive module 4 to generate rotary power and rotate around the base.

[0039] The base of the utility model is placed on the bottom surface that can bear certain pressure, the cylindrical stand column is placed in the middle of the base, four jacks are evenly distributed around to align the rotary center of the cross beam with the coaxial center of the workpiece to be machined (upper support), the rotary bearing is assembled between the cylindrical stand column and the cross beam, the rotation of the cross beam is completed by the meshing of the pinion and the gear of the rotary bearing;Two groups of planetary reducers 4 are installed on both sides of the cross beam, a motor and its encoder 3 are installed on the upper part of the reducer 4, the operation of the motor and data collection and feedback are controlled, a hydraulic brake 2 is installed in the middle to accurately stop and brake the rotation of the cross beam.

[0040] The large portal crane rotary table car milling and drilling composite machining device, the lifting mechanism is a jack, the telescopic end of the jack is connected with the bottom of the stand column, and the bottom of the jack is installed on the base. The stand column is a cylindrical stand column, and the jack is at least three, and is evenly distributed between the cylindrical stand column and the base.

[0041] ​The large gantry crane turntable milling and drilling composite machining device described in this utility model, such as Figure 2 As shown, a milling and drilling linear guide 15 and a milling and drilling rack 14 are installed on the left side of the crossbeam. The vertical milling and drilling module 1 is installed on the milling and drilling base 13. A milling and drilling slider 12 connected to the guide rail pair of the milling and drilling linear guide is provided on the side of the milling and drilling base 13. A sliding drive device is provided inside the milling and drilling base. A sliding gear that meshes with the milling and drilling rack is installed on the rotating shaft of the sliding drive device. The sliding drive device described in this utility model uses a reducer. By adjustment, the sliding gear in the vertical milling and drilling module meshes with the milling and drilling rack on the side of the crossbeam, completing the radial feed adjustment of the Φ85 inner circumferential hole in the upper part of the upper support ring 1, so that the center of the milling (boring) cutter or drill bit meets the rotation center positioning of the hole machining on the drawing. The vertical feed of the vertical milling module completes the drilling and the milling depth adjustment; the circumferential drilling indexing movement and milling rotary feed are completed by the rotation of the crossbeam.

[0042] The large gantry crane turntable milling and drilling composite machining device described in this utility model, such as Figure 7 As shown, support bars 10 are arranged radially around the bottom of the base to level the annular raceway 11 at the bottom of the support ring 1 on the workpiece, ensuring the stability of the workpiece during processing.

[0043] The large gantry crane turntable milling and drilling composite machining device of this utility model is equipped with an encoder 21 and a brake 19 on the rotary reducer. Both the encoder and the brake are connected to the industrial control computer. The vertical milling and drilling module, the rotary turning module, and the rotary turning module are all connected to the industrial control computer for convenient automatic control.

[0044] The large gantry crane turntable milling and drilling composite machining device described in this utility model, such as Figure 3 and Figure 4 As shown, the rotary turning module includes a first hanger 25, a tool holder 24 is provided on the left side of the first hanger, a turning linear guide 26 and a turning rack 28 are installed inside the turning crossbeam, a turning groove is provided at the bottom of the crossbeam corresponding to the turning linear guide, the top of the first hanger extends into the crossbeam through the turning groove and is fixedly connected to the slide box 27, a guide groove is provided at the bottom of the slide box, the guide groove and the turning linear guide form a turning linear guide pair, a turning reducer motor 29 is installed on the side of the slide box, a turning sliding gear 30 is installed on the output shaft of the turning reducer motor, and the turning sliding gear meshes with the turning rack.

[0045] The large gantry crane turntable milling and drilling composite machining device described in this utility model, such as Figure 5As shown, the second hanger 32 is composed of a platform welded by H-shaped steel and steel plates, the horizontal milling and drilling module is installed on the platform of the second hanger 32, a vertical frame is installed at the bottom of the cross beam, a vertical frame is vertically installed at the center of the vertical frame, a dovetail groove hard rail is installed at the top of the platform, the vertical frame and the dovetail groove hard rail constitute a horizontal milling and drilling guide rail pair, a screw hole is arranged at the two ends of the dovetail groove hard rail, a screw rod and a screw nut form a screw rod pair connection, and the top of the screw rod is connected with the output shaft of the speed reducer. The platform is fed up and down by rotating the screw rod, so that the position of the drill bit on the power head and the rolling surface to be drilled are aligned, the horizontal feed is completed by the hand wheel on the milling and drilling power head, and the drilling is completed. The milling feed function is the same as the drilling, a milling cutter needs to be replaced for the drill bit, and the milling in the other direction can be completed by manual or electric milling.

[0046] The large portal crane rotary table car milling and drilling composite machining device, as shown in the drawings, Figure 5 As shown, the horizontal milling and drilling module comprises a milling and drilling power head 33, and a drill bit 31 of the milling and drilling power head is installed on the milling and drilling power head.

[0047] The vertical milling and drilling module, the rotary turning module and the horizontal milling and drilling module of the utility model are prior art, are installed on the cross beam of the utility model, rotation power of the cross beam is driven through the rotary drive module, so that the corresponding vertical milling and drilling module, rotary turning module or horizontal milling and drilling module is rotated to the corresponding position on the support ring of the super large portal crane to be machined, and corresponding operation is carried out.

[0048] Although the utility model is a turning, milling and drilling all-in-one machine designed for a super large portal crane rotary table, it can be used for turning, milling and drilling of other large ring-shaped workpieces.

[0049] Advantages of the utility model are as follows:

[0050] 1. The utility model is novel in design, integrates turning, milling and drilling, is high in function, compact in structure, convenient to install and easy to manufacture.

[0051] 2. The device is assembled in modules, each module can be separately installed and used, or can be assembled together and processed in separate periods, and is high in operation efficiency, stable and accurate in quality.

[0052] 3. Since it is very difficult to transport and process large workpieces (19 meters in diameter and 108 tons in weight), the device can be placed in the middle and upper part of the workpiece to meet the processing requirements.

[0053] 4. The T-shaped rotary structure of the middle vertical column support and the upper horizontal cross beam is used, rotation speed is stable and accurate through a large reduction ratio and a motor encoder, drilling division is uniform and consistent, and the turning speed is infinitely adjustable, and the device is high in torque and surface processing precision.

[0054] 5. The vertical milling and drilling module mounted on the side of the crossbeam can perform both vertical drilling and planar milling. The milling and drilling linear guide and milling and drilling rack mounted on the side can adapt to circumferential drilling with different rotation diameters.

[0055] 6. The first turning hanger at the lower left end of the crossbeam is equipped with a rotary turning module. Through the turning linear guide and turning rack installed inside the crossbeam, it is possible to turn raceways with different turning diameters.

[0056] 7. A horizontal milling and drilling module is installed at the lower right end of the crossbeam, which can perform both horizontal drilling and vertical milling.

[0057] This utility model can meet the needs of both ultra-large tonnage gantry cranes (greater than 500 tons) and gantry cranes with an upper support ring structure (less than 500 tons). After one installation and adjustment, it can perform three machining functions: turning, milling, and drilling. It has the advantages of excellent overall processing quality, high processing efficiency, and low processing cost, and has certain innovativeness, practicality, and promotional value.

[0058] This utility model has the advantages of multiple functions, wide application range, multi-purpose, high efficiency, good processing quality, etc., and has considerable economic benefits. It reduces the transfer of large equipment and solves the problem that general large processing equipment cannot process.

[0059] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A combined milling and drilling machining device for a large gantry crane turntable, comprising a base (5), characterized in that: The crossbeam (3) is set on the top of the base (5) through the rotary transmission mechanism (4). The vertical milling module (1) is slidably installed on the left side of the crossbeam (3). A rotary turning module (2) is installed at the lower left end of the crossbeam. The crossbeam is a hollow beam. A turning linear guide is set at the bottom right end of the crossbeam. The upper part of the turning module is slidably installed on the turning linear guide. A horizontal milling module (6) is installed at the lower right end of the crossbeam. The rotary transmission mechanism (4) includes a column (16). The column is installed on the base (5) through the lifting mechanism (17). A rotary support (23) is set at the top of the column. The rotary support is a disc-shaped support. The rotary support has a central shaft. A rotary support gear is set on the outer surface of the disc-shaped support. The center of the crossbeam is installed on the central shaft of the rotary support through a bearing. A rotary drive module is set at the center of the crossbeam. A rotary pinion is set on the output shaft of the rotary drive module. The rotary pinion meshes with the rotary support gear.

2. The large gantry crane turntable milling and drilling composite machining device according to claim 1, characterized in that: The lifting mechanism is a jack, with the telescopic end of the jack connected to the bottom of the column, and the bottom of the jack installed on the base.

3. The large gantry crane turntable milling and drilling composite machining device according to claim 1, characterized in that: The column is a cylindrical column, and there are at least three jacks, evenly distributed between the cylindrical column and the base.

4. The large gantry crane turntable milling and drilling composite machining device according to claim 1, characterized in that: A milling drill linear guide (15) and a milling drill rack (14) are installed on the left side of the crossbeam. The vertical milling drill module (1) is installed on the milling drill seat (13). The side of the milling drill seat (13) is provided with a milling drill slider connected to the guide rail pair of the milling drill linear guide. A sliding drive device is provided inside the milling drill seat. A sliding gear that meshes with the milling drill rack is installed on the rotating shaft of the sliding drive device.

5. The large gantry crane turntable milling and drilling composite machining device according to claim 4, characterized in that: The sliding drive device is a speed reducer.

6. The large gantry crane turntable milling and drilling composite machining device according to claim 1, characterized in that: Support bars (10) are arranged radially around the bottom of the base to level the support ring on the workpiece.

7. The large gantry crane turntable milling and drilling composite machining device according to claim 1, characterized in that: The rotary drive module is equipped with an encoder (21), which is connected to the industrial control computer. The vertical milling and drilling module, the rotary turning module, and the rotary turning module are all connected to the industrial control computer.

8. The large gantry crane turntable milling and drilling composite machining device according to claim 1, characterized in that: The rotary turning module includes a first hanger (25), a tool holder (24) is provided on the left side of the first hanger, a turning linear guide (26) and a turning rack (28) are installed inside the turning crossbeam, a turning groove is provided at the bottom of the crossbeam corresponding to the turning linear guide, the top of the first hanger extends into the crossbeam through the turning groove and is fixedly connected to the slide box (27), a guide groove is provided at the bottom of the slide box, the guide groove and the turning linear guide form a turning linear guide pair, a turning reducer motor (29) is installed on the side of the slide box, a turning sliding gear (30) is installed on the output shaft of the turning reducer motor, and the turning sliding gear meshes with the turning rack.

9. The large gantry crane turntable milling and drilling composite machining device according to claim 1, characterized in that: It also includes a second hanger (32), which is a platform welded from H-beams and steel plates. The horizontal milling and drilling module is installed on the platform of the second hanger (32). A vertical frame is installed at the bottom of the crossbeam, and a screw rod is vertically installed at the center of the vertical frame. A dovetail groove hard rail is installed at the top of the platform. The dovetail groove hard rail and the vertical frame form a horizontal milling and drilling guide pair. Screw holes are provided at both ends of the dovetail hard rail. The screw rod and the screw rod nut form a screw rod pair connection. The top of the screw rod is connected to the output shaft of the reducer.

10. The large gantry crane turntable milling and drilling composite machining device according to claim 9, characterized in that: The horizontal milling module includes a milling power head (33), and the drill bit (31) of the milling power head is mounted on the milling power head.

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