CN213843110U - Clamp for magnetic powder inspection of shaft workpieces - Google Patents

Abstract

The utility model provides an axle type work piece magnetic particle inspection uses anchor clamps, it can solve current axle type work piece magnetic particle inspection and adopt the lifting rope method, need hoist and mount many times repeatedly, has the problem of inefficiency, complex operation, increase safe risk. The turntable is arranged above the base, and the turntable can horizontally rotate on the base; the large end bracket and the small end bracket are respectively and fixedly arranged on the turntable; four groups of bearings are arranged at the top of the large-end support and are respectively in rolling contact with the large-end outer circular surface of the shaft workpiece, wherein two groups of bearings are arranged below the large-end outer circular surface for supporting, and the other two groups of bearings are arranged at two sides of the large-end outer circular surface for limiting; two groups of bearings are arranged at the top of the small end support and are respectively in rolling contact with the small end outer circular surface of the shaft workpiece, and the axis of the shaft workpiece is horizontal when the shaft workpiece is placed on the large end support and the small end support.

Description

Clamp for magnetic powder inspection of shaft workpieces

Technical Field

The utility model relates to a frock field of detecting a flaw specifically is an axle type work piece anchor clamps for magnetic particle inspection.

Background

Fig. 1 is a shaft-like workpiece having a large end 1, a small end 2, and a shaft hole 3. At present, a rope-hanging method is generally adopted for magnetic particle inspection of such shaft workpieces, as shown in fig. 2, a rope 4 is passed through an axial hole 3 of a shaft workpiece 5, suspended on a travelling crane, moved to a proper position of a magnetic particle inspection device 6, a conductive copper bar 7 is passed through the axial hole 3, and magnetic particle inspection is performed under the combined action of a magnetic ring coil 8 and the conductive copper bar 7, and fig. 2 shows two guide rails of the magnetic particle inspection device 6 as 9.

The whole outer circular surface (including the large end outer circular surface 16 and the small end outer circular surface 17), the large end surface 19 and the small end surface 38 of the shaft workpiece, that is, all the surfaces around, need to be subjected to magnetic particle inspection, and only the part of the area facing the inspector (i.e., the area a indicated by the circle in fig. 2) can be subjected to magnetic particle inspection each time magnetic particle inspection is performed. The outer diameter of the workpiece reaches phi 400-phi 500mm, the workpiece is very heavy, the workpiece cannot be rotated when being suspended on a rope, in order to detect other areas, the workpiece can only be lifted away and placed in a safe area, then the workpiece is rotated to a new detection area, and then the workpiece is hoisted and detected again by the rope, so that all areas can be detected by repeatedly hoisting the workpiece for many times. According to the statistics of detection personnel, the shaft workpiece shown in the figure 2 is detected by a rope hoisting method, the cost is 2.5-3 hours, the efficiency is very low, a worker needs to repeatedly hoist the shaft workpiece ceaselessly, the operation is very complicated, and the safety risk is increased.

Disclosure of Invention

Adopt the lifting rope method to current axle type work piece magnetic particle inspection, need hoist repeatedly many times, have the technical problem of inefficiency, complex operation, increase safe risk, the utility model provides an axle type work piece magnetic particle inspection uses anchor clamps, it can be at level and two vertical direction random rotation different angles when magnetic particle inspection to realize 360 all-round carrying out magnetic particle inspection to axle type work pieces, need not to hoist repeatedly, efficient, convenient operation, reduction safe risk.

The technical scheme is as follows: the utility model provides an axle type work piece anchor clamps for magnetic particle inspection which characterized in that: the turntable comprises a base, a turntable, a large-end support and a small-end support, wherein the turntable is arranged above the base and can horizontally rotate on the base; the large end bracket and the small end bracket are respectively and fixedly arranged on the turntable; four groups of bearings are arranged at the top of the large-end support and are respectively in rolling contact with the large-end outer circular surface of the shaft workpiece, wherein two groups of bearings are arranged below the large-end outer circular surface for supporting, and the other two groups of bearings are arranged on two sides of the large-end outer circular surface for limiting; two groups of bearings are arranged at the top of the small end bracket and are respectively in rolling contact with the small end outer circular surface of the shaft workpiece; when the shaft workpiece is placed on the large-end support and the small-end support, the axis of the shaft workpiece is horizontal.

It is further characterized in that:

the shaft workpiece turning device is characterized by further comprising a safety stop block, wherein the safety stop block and the small-end support are respectively arranged on two sides of the large-end support, the safety stop block is close to the large-end support, the safety stop block is fixedly installed on the rotary table or simultaneously fixedly connected with the rotary table and the large-end support, and the safety stop block is used for limiting the large-end face of the shaft workpiece to prevent the shaft workpiece from turning on one side.

The bearing is a polyurethane forming bearing.

The big end bracket and the small end bracket are both austenitic stainless steel brackets.

The turntable is rotationally connected with the base through a thrust bearing; the base includes basic mounting bracket and rigid coupling in the bearing frame at basic mounting bracket top, the carousel include carousel base plate and rigid coupling in bearing housing on the carousel base plate bottom surface, the rigid coupling has hoisting screw on the carousel base plate, thrust bearing install in the bearing housing, thrust bearing's outer lane with the inner chamber tight fit of bearing housing, the inner circle with the bearing frame tight fit.

The field font frame construction that the basis mounting bracket formed for splicing by the channel-section steel, the rigid coupling has the baffle respectively on two opposite flanks of basis mounting bracket, the face of baffle is on a parallel with the terminal surface of axle type work piece, the lower extreme of baffle extends the basis mounting bracket, the distance between two baffles equals the width of two guide rails of magnetic particle inspection equipment.

It still includes horizontal locking subassembly, horizontal locking subassembly includes screw thread screw frame, through-hole screw frame and lower part locking screw, screw thread screw frame and through-hole screw frame rigid coupling respectively are in on the basis mounting bracket, lower part locking screw level sets up, the cooperation of lower part locking screw passes behind the through-hole screw frame on the through-hole with screw hole screw-thread fit on the screw thread screw frame, the tip of lower part locking screw can push up tightly the outer disc of bearing housing.

The shaft type workpiece clamping device further comprises a vertical stopping assembly, wherein the vertical stopping assembly comprises an upper stopping screw rod, the upper stopping screw rod is horizontally arranged, the upper stopping screw rod is installed on the small end support in a threaded fit mode, the end portion of the upper stopping screw rod is brazed in a stacked mode, and the end portion of the upper stopping screw rod can be tightly propped against the back face of the large end of the shaft type workpiece.

The utility model discloses a bearing installation structure, including bearing, tip support, bearing installation axle, big end support, tip support, bearing installation epaxial install the bearing just the both sides of bearing are spacing by circlip respectively, the tip support all includes two mounting panels that are parallel to each other and the interval sets up, and the both ends of bearing installation axle pass two respectively perpendicularly the mounting panel is in through big packing ring and set screw rigid coupling on the mounting panel, be equipped with four on the big end support the bearing installation axle, be equipped with two on the tip support the bearing installation axle, install on the bearing installation axle the bearing just the both sides of bearing are spacing respectively.

And a reinforcing plate is fixedly connected between the two parallel mounting plates.

The utility model has the advantages that:

the utility model discloses a shaft class work piece anchor clamps for magnetic particle inspection, it is equipped with the carousel, main tributary frame and tip support, the outer disc of the main tributary of axle type work piece and four groups of bearing rolling contact on the main tributary frame, the outer disc of tip and two groups of bearing rolling contact on the tip support, six groups of bearings not only realize the bearing and the circling spacing of shaft type work piece, effectively grip the work piece, and shaft type work piece can also realize 360 rotations of vertical direction on the bearing, main tributary frame and tip support are all fixed mounting on the carousel, thus the carousel can drive shaft type work piece to realize 360 rotations of horizontal direction, thus the work piece only needs once clamping when magnetic particle inspection, can accomplish the magnetic particle inspection work of all outer surfaces of whole work piece, need not to hoist and mount many times repeatedly, convenient operation, safety risk is reduced, only need 1~1.5 hours to accomplish magnetic particle inspection, the efficiency is greatly improved.

Drawings

FIG. 1 is a front view of a shaft workpiece;

FIG. 2 is a schematic view of magnetic particle inspection of shaft workpieces by a conventional lifting rope method;

FIG. 3 is a front view of the present invention;

FIG. 4 is a left side view of FIG. 3;

fig. 5 is a front view of the base of the present invention;

FIG. 6 is a top view of FIG. 5 (lower stop screw not shown);

fig. 7 is a front view of the turntable of the present invention;

FIG. 8 is a top view of FIG. 7 (the lifting screw not shown);

fig. 9 is a schematic diagram of magnetic powder inspection of a clamp for shaft workpieces.

Reference numerals:

1-big end; 2-small end; 3-shaft hole; 4-a rope; 5-shaft workpieces; 6-magnetic powder inspection equipment; 7-conductive copper rods; 8-magnetic loop coil; 9-a guide rail;

11-a base; 12-a turntable; 13-big end support; 14-a small end support; 15-a bearing; 16-big end outer circle surface; 17-small end outer circle surface; 18-safety stops; 19-big end face; 20-a thrust bearing; 21-a base mounting frame; 22-a bearing seat; 23-a turntable substrate; 24-a bearing sleeve; 25-hoisting screws; 26-a baffle; 27-a threaded screw rack; 28-through hole screw frame; 29-lower stop screw; 30-upper stop screw; 31-big end back; 32-a mounting plate; 33-a reinforcement plate; 34-bearing mounting shaft; 35-large washer; 36-a set screw; 37-circlip; 38-small end face.

Detailed Description

Referring to fig. 1 to 9, the clamp for magnetic particle inspection of shaft workpieces of the present invention includes a base 11, a turntable 12, a big end bracket 13 and a small end bracket 14, wherein the turntable 12 is disposed above the base 11, and the turntable 12 can horizontally rotate on the base 11; the large-end bracket 13 and the small-end bracket 14 are respectively fixedly arranged on the rotary table 12, and the large-end bracket 13 and the small-end bracket 14 are all austenitic stainless steel brackets, so that magnetic interference generated during magnetic powder inspection can be avoided; four groups of bearings 15 are arranged at the top of the large-end support 13, the four groups of bearings 15 are respectively in rolling contact with the large-end outer circular surface 16 of the shaft workpiece, two groups of bearings 15 are arranged below the large-end outer circular surface 16 for supporting, and the other two groups of bearings 15 are arranged at two sides of the large-end outer circular surface 16 for limiting; two groups of bearings 15 are arranged at the top of the small end support 14, the two groups of bearings 15 are respectively in rolling contact with the small end outer circular surface 17 of the shaft workpiece, and the axis of the shaft workpiece is horizontal when the shaft workpiece is placed on the large end support 13 and the small end support 14. The six groups of bearings 15 are all polyurethane forming bearings, so that the surfaces of the workpieces can be protected from being scratched when the bearings are in contact with the shaft workpieces, and magnetic interference generated during magnetic powder inspection can be avoided.

See fig. 3 and fig. 4, the utility model discloses an axle type work piece anchor clamps for magnetic particle inspection still includes safety stop 18, safety stop 18 and tip support 14 set up respectively in the both sides of main aspects support 13, and safety stop 18 is close to main aspects support 13, safety stop 18 fixed mounting on carousel 12, or simultaneously with carousel 12 and main aspects support 13 fixed connection, so can strengthen the rigidity, guarantee the clamping safety, safety stop 18 is used for spacing the main aspects terminal surface 19 to axle type work piece and prevents that axle type work piece from turning on one's side. Through setting up safety stop, can play limiting displacement when hoist and mount work piece to prevent that the work piece from turning on one's side.

In this embodiment, see fig. 3 to 9, the turntable 12 and the base 11 are rotatably connected through a thrust bearing 20, and a large-diameter thrust bearing is preferably used, so that the bearing capacity is high, and the horizontal rotation stability can be ensured. The specific mounting structure of thrust bearing is as follows, base 11 includes basic mounting bracket 21 and welds the bearing frame 22 at basic mounting bracket 21 top, carousel 12 includes carousel base plate 23 and welds the bearing housing 24 on carousel base plate 23 bottom surface, the rigid coupling has hoisting screw 25 on the carousel base plate 23, be convenient for be used for the integral hoisting of anchor clamps, thrust bearing 20 installs in bearing housing 24, thrust bearing 20's outer lane and bearing housing 24's inner chamber tight fit, when guaranteeing that the carousel receives thrust, can drive thrust bearing's outer lane and rotate together, thrust bearing 20's inner circle and bearing frame 22 tight fit, thrust bearing's inner circle is motionless when guaranteeing to rotate, make horizontal rotation keep steadily. Wherein, the field font frame construction that base 11's basic mounting bracket 21 was formed by 5# channel-section steel concatenation welding, baffle 26 has been welded respectively on two opposite flanks of basic mounting bracket 21, baffle 26's face is on a parallel with the terminal surface of axle type work piece, basic mounting bracket 21 extends out to the lower extreme of baffle 26, distance between two baffles 26 equals the width of two guide rails 9 of magnetic particle inspection equipment 6, through setting up the baffle, can guarantee that anchor clamps can span on magnetic particle inspection equipment's guide rail steadily, as shown in fig. 9, realize the quick installation between this anchor clamps and the magnetic particle inspection equipment. In addition, the base 11 and the turntable 12 of the clamp are both of a welding structure, so that the material is saved, and the cost is low.

Referring to fig. 1 and 3 to 5, the clamp for magnetic particle inspection of shaft workpieces of the present invention further includes a horizontal locking assembly and a vertical locking assembly, the horizontal locking assembly includes a threaded screw frame 27, a through-hole screw frame 28 and a lower locking screw 29, the threaded screw frame 27 and the through-hole screw frame 28 are respectively welded on the base mounting frame 21, the lower locking screw 29 is horizontally disposed, the lower locking screw 29 is matched with a threaded hole on the threaded screw frame 27 after passing through a through-hole on the through-hole screw frame 28, and an end of the lower locking screw 29 can tightly support an outer circumferential surface of the bearing sleeve 24; the vertical stop assembly comprises an upper stop screw 30, the upper stop screw 30 is horizontally arranged, the upper stop screw 30 is installed on the small end support 14 in a threaded fit mode, the end portion of the upper stop screw 30 is brazed in a stacked mode, and the end portion of the upper stop screw 30 can be tightly pressed against the large end back face 31 of the shaft workpiece. By the design, when the workpiece rotates horizontally to a position, the workpiece can be limited by the lower stop screw, so that the workpiece is prevented from rotating horizontally when magnetic powder inspection is performed; after the workpiece is vertically rotated to the position, the workpiece can be limited through the upper stop screw, and the workpiece is prevented from rotating in the vertical direction when magnetic powder inspection is carried out, so that the magnetic powder inspection is more convenient. The end of the upper stop screw is brazed in a pile to prevent the workpiece from being crushed.

Referring to fig. 3, the large-end bracket 13 and the small-end bracket 14 both include two parallel mounting plates 32 arranged at intervals, and a reinforcing plate 33 is further fixedly connected between the two parallel mounting plates 32 to prevent the bracket from being deformed by opening; the two ends of the bearing mounting shaft 34 respectively vertically penetrate through the two mounting plates 32 and are fixedly connected to the mounting plates 32 through the large gaskets 35 and the fixing screws 36, the large-end support 13 is provided with four bearing mounting shafts 34, the small-end support 14 is provided with two bearing mounting shafts 34, and the bearing mounting shafts 34 are provided with bearings 15, and the two sides of the bearings 15 are respectively limited by elastic check rings 37. By the design, the large-end support and the small-end support are simple in structure and convenient to install.

Adopt below the concrete description the utility model discloses the process that the anchor clamps carry out magnetic particle inspection to axle type work piece:

step one, the clamp of the utility model is hoisted on the magnetic particle inspection equipment 6, when in installation, the foundation installation rack 21 on the base 11 is placed on the guide rails 9 of the magnetic particle inspection equipment 6, and the baffles 26 at the two sides are clamped outside the two guide rails 9, so that the clamp can stably straddle the guide rails 9 of the magnetic particle inspection equipment 6;

secondly, hoisting the shaft-type workpiece 5 onto a clamp to replace the previous clamping of the workpiece by using a rope 4, preliminarily determining the mounting position of the workpiece by enabling the large end surface 19 of the shaft-type workpiece to be close to a safety stop 18 on the clamp, descending the workpiece, ensuring that the large end 1 of the shaft-type workpiece is placed on four groups of bearings 15 of a large end support 13, and ensuring that the small end 2 of the shaft-type workpiece is placed on two groups of bearings 15 of a small end support 14;

thirdly, the conductive copper rod 7 penetrates through the shaft workpiece, and magnetic powder inspection work is carried out on the outer circular surface of the shaft workpiece under the combined action of the magnetic ring type coil 8 and the conductive copper rod 7;

step four, only the part of the area facing the detection personnel can be subjected to magnetic particle inspection, after the detection is finished, the shaft workpiece is pushed up and down to rotate in the vertical direction, the shaft workpiece is rotated to a new area, and the magnetic particle inspection is continued until the detection of the whole outer circular surface is finished;

and step five, taking down the conductive copper rod 7, pushing the shaft workpiece left and right to enable the shaft workpiece to rotate in the horizontal direction, detecting the large end face 19 of the shaft workpiece, rotating the shaft workpiece in the vertical direction for the area of the large end face 19 blocked by the safety stop block 18, exposing the area for detection, rotating the shaft workpiece in the horizontal direction after the large end face 19 is detected, and detecting the small end face 38 of the shaft workpiece, wherein all the faces of the shaft workpiece are detected.

Claims (10)

1. The utility model provides an axle type work piece anchor clamps for magnetic particle inspection which characterized in that: the turntable comprises a base, a turntable, a large-end support and a small-end support, wherein the turntable is arranged above the base and can horizontally rotate on the base; the large end bracket and the small end bracket are respectively and fixedly arranged on the turntable; four groups of bearings are arranged at the top of the large-end support and are respectively in rolling contact with the large-end outer circular surface of the shaft workpiece, wherein two groups of bearings are arranged below the large-end outer circular surface for supporting, and the other two groups of bearings are arranged on two sides of the large-end outer circular surface for limiting; two groups of bearings are arranged at the top of the small end bracket and are respectively in rolling contact with the small end outer circular surface of the shaft workpiece; when the shaft workpiece is placed on the large-end support and the small-end support, the axis of the shaft workpiece is horizontal.

2. The clamp for magnetic powder inspection of shaft workpieces according to claim 1, characterized in that: the shaft workpiece turning device is characterized by further comprising a safety stop block, wherein the safety stop block and the small-end support are respectively arranged on two sides of the large-end support, the safety stop block is close to the large-end support, the safety stop block is fixedly installed on the rotary table or simultaneously fixedly connected with the rotary table and the large-end support, and the safety stop block is used for limiting the large-end face of the shaft workpiece to prevent the shaft workpiece from turning on one side.

3. The clamp for magnetic powder inspection of shaft workpieces according to claim 1, characterized in that: the bearing is a polyurethane forming bearing.

4. The clamp for magnetic powder inspection of shaft workpieces according to claim 1, characterized in that: the big end bracket and the small end bracket are both austenitic stainless steel brackets.

5. The clamp for magnetic powder inspection of shaft workpieces according to claim 1, characterized in that: the turntable is rotationally connected with the base through a thrust bearing; the base includes basic mounting bracket and rigid coupling in the bearing frame at basic mounting bracket top, the carousel include carousel base plate and rigid coupling in bearing housing on the carousel base plate bottom surface, the rigid coupling has hoisting screw on the carousel base plate, thrust bearing install in the bearing housing, thrust bearing's outer lane with the inner chamber tight fit of bearing housing, the inner circle with the bearing frame tight fit.

6. The clamp for magnetic particle inspection of shaft workpieces according to claim 5, characterized in that: the field font frame construction that the basis mounting bracket formed for splicing by the channel-section steel, the rigid coupling has the baffle respectively on two opposite flanks of basis mounting bracket, the face of baffle is on a parallel with the terminal surface of axle type work piece, the lower extreme of baffle extends the basis mounting bracket, the distance between two baffles equals the width of two guide rails of magnetic particle inspection equipment.

7. The clamp for magnetic particle inspection of shaft workpieces according to claim 5, characterized in that: it still includes horizontal locking subassembly, horizontal locking subassembly includes screw thread screw frame, through-hole screw frame and lower part locking screw, screw thread screw frame and through-hole screw frame rigid coupling respectively are in on the basis mounting bracket, lower part locking screw level sets up, the cooperation of lower part locking screw passes behind the through-hole screw frame on the through-hole with screw hole screw-thread fit on the screw thread screw frame, the tip of lower part locking screw can push up tightly the outer disc of bearing housing.

8. The clamp for magnetic powder inspection of shaft workpieces according to claim 1, characterized in that: the shaft type workpiece clamping device further comprises a vertical stopping assembly, wherein the vertical stopping assembly comprises an upper stopping screw rod, the upper stopping screw rod is horizontally arranged, the upper stopping screw rod is installed on the small end support in a threaded fit mode, the end portion of the upper stopping screw rod is brazed in a stacked mode, and the end portion of the upper stopping screw rod can be tightly propped against the back face of the large end of the shaft type workpiece.

9. The clamp for magnetic powder inspection of shaft workpieces according to claim 1, characterized in that: the utility model discloses a bearing installation structure, including bearing, tip support, bearing installation axle, big end support, tip support, bearing installation epaxial install the bearing just the both sides of bearing are spacing by circlip respectively, the tip support all includes two mounting panels that are parallel to each other and the interval sets up, and the both ends of bearing installation axle pass two respectively perpendicularly the mounting panel is in through big packing ring and set screw rigid coupling on the mounting panel, be equipped with four on the big end support the bearing installation axle, be equipped with two on the tip support the bearing installation axle, install on the bearing installation axle the bearing just the both sides of bearing are spacing respectively.

10. The clamp for magnetic particle inspection of shaft workpieces according to claim 9, characterized in that: and a reinforcing plate is fixedly connected between the two parallel mounting plates.

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