CN219358547U - Rear axle shaft-penetrating positioning tool of rotary drill - Google Patents

Abstract

The utility model discloses a rear axle penetrating positioning tool of a rotary drill, which comprises a supporting seat and a shaft sleeve; the shaft penetrating positioning tool is respectively arranged at the front end and the tail end of the rear shaft workpiece, the circular shaft can be supported at a designated height in an auxiliary mode, the radial welding deformation is limited by means of the dead weight of the long shaft and the rigidity constraint of the positioning tool, and meanwhile the circular shaft can be rotated circumferentially to realize the welding operation at different positions. The supporting seat is formed by welding a bottom plate, a vertical plate, a rib plate and lifting lugs; the shaft sleeve is arranged in two symmetrically distributed vertical plate unthreaded holes of the supporting seat, and the shaft penetrating limits radial deformation and can avoid collision and scratch of the circular shaft. The technical problems that the rear shaft of the conventional rotary drill is large in welding deformation and difficult to continuously overturn and weld are solved, and meanwhile, auxiliary supporting effects are achieved on working procedures such as inspection, splice welding and machining of shaft workpieces.

Description

Rear axle shaft-penetrating positioning tool of rotary drill

Technical Field

The utility model relates to a rear axle penetrating shaft positioning tool of a rotary drill, and belongs to the technical field of engineering machinery manufacturing.

Background

The rotary drill is used as main drilling equipment for large-scale surface mine exploitation, and has the characteristics of large drilling aperture and high perforation efficiency. The upper cart is of a long box type welding structure, is arranged on a welding type rear axle and a cross beam, and is connected with two side walking crawler beams through the rear axle and the cross beam. When the whole machine is assembled, the welded rear axle needs to penetrate into the axle sleeves of the crawler beams at two sides at the same time, so that the requirement on the coaxiality after welding is high. If the coaxiality of the rear axle cannot be ensured, the whole machine cannot be assembled or the crawler beams on two sides are in a horn mouth.

In order to ensure the coaxiality of the rear axle after welding, the following two modes can be generally adopted: firstly, reserving process allowance for the round shaft, and integrally processing the rear shaft assembly after welding. But the rear axle component is in an eccentric structure (the weight is up to 2 tons, the length is about 4.8 m), and a large eccentric bending moment exists in the rotation process of the workpiece, so that the coaxiality is difficult to ensure by a whole turning mode after welding. Secondly, a rigid constraint force is applied to the rear axle through a special tool so as to control the welding deformation within a tolerance range, and the method is more applicable. In addition, the rear axle is in the inspection machining precision of factory and when survey hardness index, welding work piece, face milling after welding and drilling, all need frock location and auxiliary stay work piece.

Therefore, the shaft penetrating positioning tool which is simple and convenient to operate, safe and reliable is urgently needed to lighten the labor intensity of workers, ensure the coaxiality of the welded shaft on the premise of processing without welding, and play a supporting role in the inspection, the splicing, the welding and the processing procedures of the shaft.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, provides a rear shaft penetrating positioning tool for a rotary drill, and solves the technical problems that the deformation of a rear shaft is large after welding and no auxiliary supporting point exists after overturning in the prior art.

The utility model is realized according to the following technical scheme:

the utility model discloses a rear axle penetrating shaft positioning tool of a rotary drill, which comprises the following components:

the supporting seat is used for supporting the circular shaft at a preset height in an auxiliary manner;

the shaft sleeve is installed in the supporting seat, the round shaft penetrates into the shaft sleeve, the round shaft is limited in the axial direction, and the round shaft can be overturned in the shaft sleeve.

In some embodiments, the supporting seat mainly comprises a bottom plate, two vertical plates which are positioned on the bottom plate and are symmetrically distributed, and two rib plates which are positioned between the two vertical plates and are symmetrically distributed.

In some embodiments, a lifting lug is disposed between the tops of the two risers.

In some embodiments, the upper portion of the riser is provided with a circular hole for mounting the bushing.

In some embodiments, the center of the shaft sleeve is provided with a through hole, and the upper end of the shaft sleeve is provided with a T-shaped step.

In some embodiments, square notches are formed at two ends of the T-shaped step of the shaft sleeve, and the radial movement of the shaft sleeve can be limited after the square notches are matched with the stop blocks.

In some embodiments, the stop block is in a strip shape and is consistent with the length of the square notch on the side surface of the shaft sleeve, and the stop block is arranged on the supporting seat at the square notch on the two sides of the shaft sleeve.

In some embodiments, the other end of the sleeve opposite the T-shaped step is provided with an annular gap for mounting a limiting member to limit axial movement of the sleeve on the support.

In some embodiments, the stop member is a collar with an opening for snapping into the annular gap.

The utility model has the beneficial effects that:

the utility model provides a rear axle penetrating positioning tool of a rotary drill, which has the advantages of convenient storage, small occupied space, simple structure, low manufacturing cost, quick and convenient disassembly and assembly, high connecting rigidity, safety and reliability, can effectively lighten the labor intensity of workers, control the welding deformation of a rear axle, and plays an auxiliary supporting role in inspection, splicing, welding and processing procedures.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort.

In the drawings:

FIG. 1 is a front view of a positioning tool for rear axle penetration of a rotary drill;

FIG. 2 is a rear face structure diagram of a rear shaft penetration positioning tool of the rotary drill;

FIG. 3 is a block diagram of a support base according to the present utility model;

fig. 4 is a view showing a structure of a sleeve according to the present utility model (a is a perspective view, and b is a sectional view);

FIG. 5 is a block diagram of the present utility model;

FIG. 6 is a block diagram of the present utility model;

FIG. 7 is a use effect diagram of the rear axle through axle positioning tool of the rotary drill of the utility model;

fig. 8 is a clamping cross-sectional view of the rear axle through axle positioning tool of the rotary drill.

The attached drawings are identified: 10. the device comprises a supporting seat, 20, a shaft sleeve, 30 stop blocks, 40, a check ring, 50 and a rear shaft; 101. the lifting device comprises a bottom plate, 102, vertical plates, 103, rib plates, 104 and lifting lugs.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Description of the embodiments

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, 2 and 8, a rear axle threading positioning tool of a rotary drill comprises a supporting seat 10 and a shaft sleeve 20; the supporting seat 10 is used for supporting the circular shaft at a preset height in an auxiliary manner; the shaft sleeve 20 is installed in the supporting seat 10, the round shaft penetrates into the shaft sleeve 20, the round shaft is limited in the axial direction, and the round shaft can be overturned in the shaft sleeve 20. The shaft penetrating positioning tool is respectively arranged at the head end and the tail end of the rear shaft workpiece, the circular shaft can be supported at a designated height in an auxiliary mode, the radial welding deformation is limited by means of the dead weight of the long shaft and the rigidity constraint of the positioning tool, and the circular shaft can be rotated circumferentially to realize the welding operation at different positions. The technical problems that the rear shaft of the conventional rotary drill is large in welding deformation and difficult to continuously overturn and weld are solved, and meanwhile, auxiliary supporting effects are achieved on working procedures such as inspection, splice welding and machining of shaft workpieces.

A preferred embodiment of the above embodiment with respect to the support base is given below:

as shown in fig. 3, the supporting seat 10 mainly comprises a bottom plate 101, two vertical plates 102 which are positioned on the bottom plate 101 and are symmetrically distributed, and two rib plates 103 which are positioned between the two vertical plates 102 and are symmetrically distributed. The upper part of the vertical plate 102 is provided with a round hole for installing the shaft sleeve.

The further scheme is as follows: lifting lugs 104 are arranged between the tops of the two vertical plates 102, so that the whole tool lifting is realized.

A preferred embodiment of the above embodiment with respect to the sleeve is given below:

as shown in fig. 4, a through hole is formed in the center of the shaft sleeve 20, and is used for penetrating into two ends of the shaft part, and the upper end of the shaft sleeve 20 is provided with a T-shaped step. Square notches are formed at two ends of the T-shaped step of the shaft sleeve 20, and the radial movement of the shaft sleeve 20 can be limited after the square notches are matched with the stop block 30.

The further scheme is as follows: as shown in fig. 5, the stop block 30 is in a strip shape, and the length of the stop block is consistent with that of the square notch on the side surface of the shaft sleeve 20, and the stop block 30 is arranged on the support seat 10 at the square notch on two sides of the shaft sleeve 20.

The further scheme is as follows: as shown in fig. 6, the other end opposite to the T-shaped step of the sleeve 20 is provided with an annular gap for mounting a retainer ring 40 for limiting axial movement of the sleeve 20 on the support base 10.

As shown in fig. 7a, the two ends of the circular shaft are respectively bound by using a hanging belt, so that one end of the rear shaft 50 slowly penetrates into the positioning tool first, then the other end of the rear shaft 50 slowly penetrates into the positioning tool on the other side after the position binding is moved, and the two sides of the positioning tool are slowly placed on the working platform after reaching the designated position. The diameter tolerance and coaxiality of the circular shaft in the length direction are accurately measured by using the measuring tool, and the surface hardness of the circular shaft is measured by using a Brinell hardness tester, so that the technical index of the drawing is met. As shown in fig. 7b and 7c, after the rear axle 50 is fixed at the positioning tools at two ends, the splicing point mounting seat, the rib plate and the reinforcing rib workpiece are welded by using the traveling crane to assist in rotating the rear axle 50 to a designated position, such as filling the fillet weld in the transverse welding position welding mounting seat and welding the rib plate overlaying fillet weld in the flat welding position. The welding process mainly relies on the gravity of rear axle 50 itself to make location frock fixed on the platform, and then location frock applys rigid constraint to big circular shaft both ends, effectively reduces the welding deflection in order to guarantee the axiality requirement after the welding. After the rear axle 50 is welded and inspected to be qualified, the rear axle 50 and the positioning tool can be transported to a machining center, for example, after the position of the figure is fixed, the surface milling and drilling procedures are carried out on the mounting seat.

In conclusion, through the rear axle penetrating positioning tool of the rotary drill, two ends of the rear axle penetrate into circular holes of the positioning tool, and rigid constraint force is applied to the rear axle, so that welding deformation is effectively reduced, and the requirement on post-welding coaxiality is met. Meanwhile, the positioning tool can assist in supporting the circular shaft and the rear shaft assembly, is convenient for inspection and detection, splicing, welding and machining operations of workpieces in the whole process flow, and particularly can freely rotate in the eccentric structure, so that the welding requirements of the workpieces at different welding positions are met. The positioning tool has the advantages of low manufacturing cost, convenience and quickness in use and convenience in maintenance, and can effectively reduce the labor intensity of workers and ensure the requirement on the coaxiality of the rear axle assembly after welding.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features contained in other embodiments, but not others, combinations of features of different embodiments are equally meant to be within the scope of the utility model and form different embodiments. For example, in the above embodiments, those skilled in the art can use the above embodiments in combination according to known technical solutions and technical problems to be solved by the present application.

The foregoing description is only illustrative of the preferred embodiment of the present utility model, and is not to be construed as limiting the utility model, but is to be construed as limiting the utility model to any simple modification, equivalent variation and variation of the above embodiments according to the technical matter of the present utility model without departing from the scope of the utility model.

Claims (9)

1. A locating fixture for rear axle penetration of a rotary drill, which is characterized by comprising:

the supporting seat is used for supporting the circular shaft at a preset height in an auxiliary manner;

the shaft sleeve is installed in the supporting seat, the round shaft penetrates into the shaft sleeve, the round shaft is limited in the axial direction, and the round shaft can be overturned in the shaft sleeve.

2. The rear axle through axle positioning tool of a rotary drill machine according to claim 1, wherein:

the supporting seat mainly comprises a bottom plate, two vertical plates which are positioned on the bottom plate and are symmetrically distributed, and two rib plates which are positioned between the two vertical plates and are symmetrically distributed.

3. The rear axle through axle positioning tool of a rotary drill machine according to claim 2, wherein:

lifting lugs are arranged between the tops of the two vertical plates.

4. The rear axle through axle positioning tool of a rotary drill machine according to claim 2, wherein:

the upper part of the vertical plate is provided with a round hole for installing the shaft sleeve.

5. The rear axle through axle positioning tool of a rotary drill machine according to claim 1, wherein:

the center of the shaft sleeve is provided with a through hole, and the upper end of the shaft sleeve is provided with a T-shaped step.

6. The rear axle through axle positioning tool of a rotary drill machine according to claim 5, wherein:

the two ends of the T-shaped step of the shaft sleeve are provided with square notches, and the square notches can limit the radial movement of the shaft sleeve after being matched with the stop block.

7. The rear axle through axle positioning tool of a rotary drill machine of claim 6, wherein:

the stop block is long and is consistent with the length of the square notch on the side face of the shaft sleeve, and the stop block is arranged on the supporting seat at the square notch on the two sides of the shaft sleeve.

8. The rear axle through axle positioning tool of a rotary drill machine according to claim 5, wherein:

the other end opposite to the T-shaped step of the shaft sleeve is provided with an annular gap for installing a limiting part to limit the shaft sleeve from axially moving on the supporting seat.

9. The rear axle through axle positioning tool of a rotary drill machine of claim 8, wherein:

the limiting component is a retainer ring with an opening and is used for being clamped in the annular notch.