CN217142388U

CN217142388U - Precise and rapid repairing device for main shaft hole of steel tube rolling mill

Info

Publication number: CN217142388U
Application number: CN202122873749.5U
Authority: CN
Inventors: 蔡水根; 钱航宇; 薛建军; 张少杰
Original assignee: Jiangyin Southern Stainless Steel Pipe Co ltd
Current assignee: Jiangyin Southern Stainless Steel Pipe Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-08-09
Anticipated expiration: 2031-11-22

Abstract

The utility model discloses a precise and rapid repairing device for a spindle hole of a steel tube rolling mill, which is characterized by comprising a first support and a second support, wherein the first support is provided with a reference plate matched with two end faces of the spindle hole, a base plate which is connected with the reference plate through a bolt is tightly attached to the reference plate, a supporting bottom plate is vertically arranged on the base plate, a feeding mechanism is arranged on the supporting bottom plate, and the feeding mechanism controls the horizontal moving direction of a reamer power mechanism; the reamer power mechanism drives the hinge rod. The original datum point, line and surface of the prosthesis are used as the installation datum of the boring processing equipment, the method is light and flexible, even the whole base is not required to be disassembled, the shaft hole can be repaired, the prosthesis is not damaged, and the method is stable and reliable, convenient to disassemble, assemble and move, wide in application range, capable of being adjusted at one time, high in processing precision and low in comprehensive cost.

Description

Precise and rapid repairing device for main shaft hole of steel tube rolling mill

Technical Field

The utility model relates to a large-scale bearing housing hole repair technology, especially a precise swift prosthetic devices in steel tube rolling mill spindle hole.

Background

The parts such as a large bearing seat like a spindle hole of a steel tube rolling mill have the problems of bearing looseness and the like caused by eccentric inner holes and small sizes due to abrasion of a shaft or a bearing part after long-term use, and the parts cannot be used if being directly scrapped and just repaired in time and cannot be used if not repaired in time. However, it is not easy to repair large pieces of several tons or more, and the existing large-scale boring equipment is a fixed equipment equipped in a manufacturing plant or a repair plant, and for an enterprise producing steel pipes or using such large-scale bearing seats, it basically does not have the condition for arranging such a boring machine, and if the whole bearing seat is removed and sent to the manufacturing plant for repair, the time is too long, and the workload is too large.

The existing inner hole boring machine has a similar basic structure, such as patent publication No. CN201565635U, and a numerical control elbow inner hole boring machine comprises a machine body, a boring head box, a boring bar, a rotary worktable, a clamp, a feeding box, a drag chain device and the like, and a honing device for machining inner holes of large parts by using the turning boring machine, such as patent publication No. CN204584940U, comprises: the method comprises the following steps of (1) turning a boring machine main shaft, turning a boring machine guide rail, and constructing on the turning and boring machine guide rail by utilizing the spatial position relationship of the turning and boring machine guide rail and the turning and boring machine main shaft: the honing device comprises a honing rod component, a honing head component, a transition connecting component and a traveling oil cylinder, and controls the honing rod to reciprocate through a hydraulic electric control system; the honing rod component consists of a honing rod body and an ejector rod arranged at the core part of the honing rod body, the honing head component consists of a main frame, a tension device and oilstones, and the transition connecting component consists of a connecting frame and a transition guide sleeve. Although these devices have their own work table as a reference point, the entire boring machine cannot be moved, and it requires a corresponding or larger type of boring machine to operate, and a repair task cannot be completed in a steel pipe mill workshop or a repair facility not having a corresponding type of boring machine. It is less desirable in modern industries where "time is efficiency" if the most primitive manual repairs are used.

Disclosure of Invention

The utility model aims at solving the above problem and providing a steel tube rolling mill spindle hole precision swift prosthetic devices, it uses the original datum point by prosthesis self as the benchmark, has pertinence, characteristics such as portability, mobility, precision height.

The above technical problem of the present invention can be solved by the following technical solutions: a precise and rapid repairing device for a spindle hole of a steel tube rolling mill is characterized by comprising a first support and a second support, wherein the first support is provided with a reference plate matched with two end faces of the spindle hole, a base plate in bolt connection with the reference plate is closely attached to the reference plate, a supporting bottom plate is vertically arranged on the base plate, a feeding mechanism is arranged on the supporting bottom plate, and the feeding mechanism controls the horizontal moving direction of a reamer power mechanism; the reamer power mechanism drives the hinge rod; the hinge rod comprises a cutter rod and an auxiliary rod extending out of the length of the cutter rod; and the second bracket is provided with a supporting core aligning mechanism matched with the auxiliary rod.

In the precise and rapid repairing device for the main shaft hole of the steel tube rolling mill, preferably, the reference plate is provided with a fixing hole matched with the existing flange screw hole on the end face of the main shaft hole.

In the precise and rapid repairing device for the spindle hole of the steel tube rolling mill, preferably, the reference plate is provided with a fixing hole matched with the auxiliary screw hole on the end face of the spindle hole.

In the foregoing precise and rapid repairing device for a main shaft hole of a steel tube rolling mill, preferably, the auxiliary screw hole is an equally divided circular hole with a center line of a standard main shaft hole as a circle center.

In the precise and rapid repairing device for the main shaft hole of the steel tube rolling mill, preferably, centering auxiliary lines which are centered with the central line of the main shaft hole are preset on two end faces of the main shaft hole, and the diameter of each centering auxiliary line is larger than the standard diameter of the main shaft hole and smaller than the diameter of an equant circular hole of an auxiliary screw hole.

In the precise and rapid repairing device for the spindle hole of the steel tube rolling mill, preferably, the first support is provided with an infrared centering instrument, and the second support is provided with a calibration point corresponding to the infrared centering instrument.

In the precise and rapid repairing device for the spindle hole of the steel tube rolling mill, preferably, the second support is provided with a reference plate matched with the end face of the spindle hole, and the reference plate structure is the same as that of the first support.

In the precise and rapid repairing device for the main shaft hole of the steel tube rolling mill, preferably, the support core aligning mechanism in the second support comprises an upper support wheel and a lower support wheel which are adjustable in the upper and lower directions, and the lower support wheel is provided with a concave arc section matched with the diameter of the auxiliary rod.

The worn large-scale bearing seat is generally filled in the worn part by means of repair welding, high-temperature spraying and the like, so that the size of an inner hole is smaller than that of a standard hole, and then the inner hole meets the requirement of the size tolerance of the standard hole by a material removing method. Because the bore has changed dimensions prior to the boring operation, the bore itself cannot be selected as a reference. The tolerance requirements of the bearing hole or the bearing bush hole not only comprise the center height, but also comprise various indexes such as roundness, coaxiality and the like.

According to the technical scheme, the bottom surface of the base where the spindle of the steel tube rolling mill is located is used as a horizontal reference, the horizontal reference can be preset, and alignment can be easily performed even if the base is not moved, namely the axis center height, namely the Y-direction precision.

Basically, all two end faces of the shaft seat hole are machined faces, including screw hole position lines on the end faces, and various components such as a flange plate, an end cover, a bearing pressing sleeve and the like need to be installed, and are molded with the same reference as the shaft hole during the shaft hole manufacturing process, so that the two end faces of the shaft seat hole are used as second reference positions and are used as installation reference and fixing positions of the repairing device.

The scheme adopts a double-position common positioning mode for two end faces of the shaft seat hole, and the single-head boring rod hardly meets the rigidity requirement due to the large diameter of the large shaft hole. The two-position positioning is achieved by the first support and the second support, and the precision in the X direction and the Z direction is achieved. The first support is used as a main part, and the second support is used as an auxiliary part. The first support is provided with reference plates which are fitted to both end faces of the spindle hole and are freely designed by an operator, so that any information related to bore hole restoration, such as reference standards of alignment lines, concentric lines, error restoration points, etc., can be made on the surface thereof. Starting from the reference plate, base plates are respectively arranged and are dynamic adjusting plates, X/Z direction data can be corrected, the supporting bottom plate is used for arranging a feeding mechanism, a reamer power mechanism is controlled by the feeding mechanism and completes X-direction feed along the horizontal moving direction, and Y-direction feed is completed by replacing the base plates.

The hinge rod is designed in structure and comprises a cutter bar and an auxiliary rod, wherein the cutter bar is used for mounting a boring cutter head, the auxiliary rod is matched with a core aligning mechanism supported by a second support, stable and reliable boring rod rigidity is formed, and the boring machining precision of the length of the whole hole is ensured. The core aligning support mechanism consists of two adjustable support wheels in the upper and lower directions to meet the requirement of auxiliary rods of different diameters, and the lower support wheel has one concave arc section matching the auxiliary rod for centering and limiting. When the feeding mechanism enables the boring cutter to move along the length direction of the shaft hole, the support provides a non-resistance, accurate center line and stable guiding service for the core mechanism.

Stabilize the setting of centering rod, any axle bed hole both ends face product all probably has the error, and this scheme is as portable, light boring processingequipment, and its stability is certainly unable to be compared with current large-scale boring machine, and stabilizes the centering rod and not only can adjust the precision of first support and the relative shaft hole standard position of second support, can regard as the midbody of first support and second support interconnect location moreover to strengthen overall unit's structural strength and stability greatly.

The datum plate of this scheme has high flexibility. According to the actual shaft seat product (base), when the end face of the main shaft hole is provided with the existing flange screw holes, the reference plate can be installed only by utilizing the screw holes. If the end face of the main shaft hole is a smooth surface and has no flange screw hole, auxiliary screw holes can be machined on the end face of the main shaft hole to position the reference plate, and the quality of the base cannot be influenced by the auxiliary screw holes.

According to the design idea of the scheme, the centering auxiliary lines which are centered with the center line of the spindle hole can be preset on the two end faces of the spindle hole, although the method belongs to the technology which is mastered by the conventional repair fitter, the preset arrangement brings great convenience to the future maintenance. The diameter of the centering auxiliary line is slightly larger than the standard diameter of the spindle hole, so that the centering auxiliary line can be used as a hole roundness repairing standard, and the centering auxiliary line has high practicability. Because the base size is great, conventional scale measuring accuracy receives the influence, and the preferred infrared ray centering appearance of this scheme is as each benchmark means of calibrating.

Compared with the prior art, the beneficial effects of the utility model are that: the original datum point, line and surface of the prosthesis are used as the installation datum of the boring processing equipment, the method is light and flexible, even the whole base is not required to be disassembled, the shaft hole can be repaired, the prosthesis is not damaged, and the method is stable and reliable, convenient to disassemble, assemble and move, wide in application range, capable of being adjusted at one time, high in processing precision and low in comprehensive cost.

Drawings

Fig. 1 is a schematic structural diagram of an application state of the present invention.

Fig. 2 is a schematic structural view of the repairing apparatus of the present invention.

Fig. 3 is a schematic structural diagram of a first bracket and a power mechanism of the present invention.

Fig. 4 is a left side view of fig. 3 (except for the feed mechanism).

Fig. 5 is a schematic view of a hinge rod structure of the present invention.

Fig. 6 is a schematic view of a second bracket structure of the present invention.

Fig. 7 is a right side view of fig. 6.

In the figure: 1. the device comprises a repairing device, 101, a reamer power mechanism, 102, a first support, 103, a stable centering rod, 104, a reference plate, 105, a hinge rod, 1051, a cutter rod, 1052, a knife installing opening, 1053, an auxiliary rod, 106, a second support, 1061, a second reference plate, 1062, an upper supporting wheel, 1063, an upper wheel adjusting handle, 1064, a lower supporting wheel, 107, a buffer nail, 108, a supporting bottom plate, 109, a base plate, 110, a feeding mechanism, 111, an infrared centering instrument, 112, a cross adjusting hole and 2, a base.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

The precise and rapid repairing device for the spindle hole of the steel tube rolling mill has the general scheme that: the bottom surface of the base 2 where the main shaft of the steel tube rolling mill is located is taken as a horizontal reference, and referring to fig. 1, two end surfaces of a main shaft hole are taken as an installation reference and a fixing position of the repairing device 1. Thereby eliminating the need for large fixed boring equipment to bore the hole. The precision requirements such as roundness, concentricity and the like of the shaft hole are honored by the repairing device 1 through the existing reference of the base 2.

The repairing device 1 comprises a first bracket 102 and a second bracket 106, as shown in fig. 2 to 3, wherein the first bracket 102 and the second bracket 106 are both provided with datum plates 104 matched with two end faces of a spindle hole, and the two existing datum holes of the two end faces of the spindle hole are from two aspects: one is the most conventional axle seat structure, i.e. the existing flange screw holes on the end face of the main axle hole, and the reference plate 104 only needs to be provided with fixing holes matched with the flange screw holes. Secondly, the auxiliary screw holes are artificially arranged, the weight of the large-scale shaft seat is large, the area of the end face is large, and the auxiliary screw holes are arranged on the end face on the premise of not influencing the quality of main body equipment, so that the condition is only that the fixing holes matched with the auxiliary screw holes are arranged in the reference plate 104. (the reference plate of the second bracket 106 is the same as the reference hole of the first bracket 102.) the auxiliary screw holes are equant round holes with the center line of the standard main shaft hole as the center point, and because the center point of the shaft hole is necessarily positioned when the center holes are arranged, the spatial position of the center line can be obtained after the holes are formed, and a favorable reference object is provided for centering the hinge rod 105.

A base plate 109 is provided in close contact with the reference plate 104, the reference plate 104 is provided with screw holes for positioning the base plate 109, in addition to fixing holes for fitting the end faces of the main shaft holes, so that the base plate 109 can be bolted to the reference plate 104 and adjusted in the Y/Z direction, and these connecting holes in the base plate 109 are cross-shaped adjusting holes 112, as shown in fig. 4.

A supporting bottom plate 108 is arranged perpendicular to the base plate 109, a feeding mechanism 110 is arranged on the supporting bottom plate 108, and the feeding mechanism 110 can adopt a slide carriage of the common lathe in the prior art or can adopt a screw to be operated manually. The feeding mechanism 110 is provided with the reamer power mechanism 101, and the feeding mechanism 110 controls the horizontal moving direction of the reamer power mechanism 101. The reamer power mechanism 101 drives the hinge rod 105, the reamer power mechanism 101 comprises a motor and a reduction gearbox, and the rotating speed is generally set to be two fast and slow, the rotating speed of the fast gear is 100r/min, and the rotating speed of the slow gear is 50 r/min.

The hinge rod 105 is structured as shown in fig. 5, and includes a cutter bar 1051 and an auxiliary rod 1053 extending beyond the cutter bar 1051, wherein the cutter bar 1051 is provided with a cutter head (boring cutter) mounting opening, and the cutter head (boring cutter) is inserted and locked by a bolt, so that the extension length of the cutter head can be adjusted. The auxiliary lever 1053 is a polished rod.

In correspondence with the auxiliary rod 1053, the second carriage 106 is provided with a support centering mechanism cooperating with the auxiliary rod 1053, see fig. 6, 7, which comprises an upper support wheel 1062 adjustable in the up and down direction and a lower support wheel 1064, wherein the lower support wheel 1064 has a concave arc section cooperating with the diameter of the auxiliary rod 1053.

A stable centering rod 103 spanning the spindle hole is further arranged between the first bracket 102 and the second bracket 106.

Centering auxiliary lines which are centered with the center line of the main shaft hole as the circle center are preset on two end faces of the main shaft hole, and the diameter of each centering auxiliary line is larger than the standard diameter of the main shaft hole and smaller than the diameter of an equant circular hole of the auxiliary screw hole. As a reference when calibrating the position of the centre line of the hinge rod 105. Meanwhile, the first bracket 102 is provided with an infrared ray centering instrument 111, and the second bracket 106 is provided with a calibration point corresponding to the infrared ray centering instrument. The infrared centering device 111 can obtain the position of the axis midpoint in the Y direction of the center height and can also correct the parallelism between the center line of the hinge rod 105 and the bottom surface.

In practical applications, the levelness of the hinge rod 105 is calibrated by using an infrared level gauge and then matching with the support to perform a core mechanism calibration operation. In addition, a far point buffer nail 107 is arranged on the first bracket 102 and the second bracket 106, and is specially used as an auxiliary supporting point under the condition that a bearing seat or other base shell is arranged on the two sides of the shaft hole.

The above embodiments are descriptions of the present invention, not limitations of the present invention, and any structure after simple transformation is all included in the protection scope of the present invention.

Claims

1. A precise and rapid repairing device for a spindle hole of a steel tube rolling mill is characterized by comprising a first support (102) and a second support (106), wherein the first support is provided with a reference plate (104) matched with two end faces of the spindle hole, a base plate (109) in bolted connection with the reference plate is tightly attached to the reference plate, a supporting bottom plate (108) is vertically arranged on the base plate, a feeding mechanism (110) is arranged on the supporting bottom plate, and the feeding mechanism controls the horizontal moving direction of a reamer power mechanism (101); the reamer power mechanism drives the hinge rod (105); the hinge rod comprises a cutter bar (1051) and an auxiliary rod (1053) extending out of the length of the cutter bar; and the second bracket is provided with a supporting core aligning mechanism matched with the auxiliary rod.

2. The precision quick repairing device for the main shaft hole of the steel tube rolling mill as claimed in claim 1, wherein the reference plate (104) is provided with a fixing hole matched with the existing flange screw hole on the end face of the main shaft hole.

3. The precision quick repairing device for the main shaft hole of the steel tube rolling mill as claimed in claim 1, wherein the reference plate (104) is provided with a fixing hole matched with the auxiliary screw hole on the end surface of the main shaft hole.

4. The precise and rapid repairing device for the main shaft hole of the steel tube rolling mill as claimed in claim 3, wherein the auxiliary screw hole is an equally divided circular hole with the center line of a standard main shaft hole as the center.

5. The apparatus of claim 4, wherein centering auxiliary lines centered on the center line of the spindle hole are pre-disposed on both end surfaces of the spindle hole, and the diameter of the centering auxiliary lines is larger than the standard diameter of the spindle hole and smaller than the diameter of the equant circular hole of the auxiliary screw hole.

6. The precise and rapid repairing device for the main shaft hole of the steel tube rolling mill as claimed in claim 1, wherein an infrared ray centering instrument (111) is arranged on the first support (102), and a calibration point corresponding to the infrared ray centering instrument is arranged in the second support (106).

7. The precise and rapid repairing device for the spindle hole of the steel tube rolling mill as claimed in claim 1, wherein the second support (106) is provided with a reference plate matched with the end face of the spindle hole, and the reference plate is the same in structure as the reference plate of the first support (102).

8. The precision quick repairing device for the spindle hole of the steel tube rolling mill as claimed in claim 1, wherein the supporting core aligning mechanism in the second bracket (106) comprises an upper supporting wheel (1062) and a lower supporting wheel (1064) which are adjustable in the up and down direction, and the lower supporting wheel is provided with a concave arc section which is matched with the diameter of the auxiliary rod (1053).