CN211283444U

CN211283444U - Hoisting accessory of big mass plug gauge

Info

Publication number: CN211283444U
Application number: CN201922106856.8U
Authority: CN
Inventors: 肖士喜; 周先宏; 贾甫; 江长娟
Original assignee: Taier Heavy Industry Co Ltd
Current assignee: Taier Heavy Industry Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-08-18
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a hoisting device of a large-mass plug gauge, which comprises an arch-shaped suspender, a positive and negative screw bolt, a special nut, a blocking sleeve component, a circular ring, a connecting block and a hanging ring; the arched suspender is divided into three parts, wherein the upper part is an inclined section, and the lower part is a horizontal section; the horizontal section of the arched suspender is a stepped shaft, a small-diameter section of the arched suspender is provided with a circular ring, and the circular ring is arranged in an arc-shaped ring groove of an inner hole of the plug gauge; the upper section of the inclined section of the arched suspender is a threaded section, a special nut is screwed on the threaded section through an axial threaded hole, the lower end of the positive and negative threaded stud is connected with a large threaded hole of the special nut, and the upper end of the positive and negative threaded stud is connected with a threaded hole of the connecting block; the screw thread direction of the two ends of the positive and negative tooth stud is opposite, and one end rotates leftwards and the other end rotates rightwards. The utility model discloses can realize six degrees of freedom adjustments such as three translation and three rotation of big quality plug gage lightly to make the method and the technique of plug gage inspection can use in heavy machine part hole class structure inspection.

Description

Hoisting accessory of big mass plug gauge

Technical Field

The utility model relates to a mechanical engineering field, in particular to hoist of heavy machinery big mass plug gauge.

Background

The plug gauge is a gauge for hole parts, is widely used in the mechanical industry, and has many forms, such as: conical plug gauges, thread plug gauges, comprehensive spline plug gauges and the like. In non-heavy machinery, it has advantages such as convenient operation is swift, inspection cost is low, comprehensive inspection is effectual, and circular cone plug gauge, screw thread plug gauge and comprehensive spline are irreplaceable or the simplest economic utensil of examining in some occasions. In light machines, these plug gauges can be conveniently used by simply equipping them with a handle, since they are not massive and can be flexibly checked for operation by the arm strength of a person under normal conditions. The heavy machinery is not the heavy machinery, the diameter of an inner hole of the heavy machinery is large, the hole depth is often hundreds of millimeters, taking a plug gauge with an involute inner spline with the hole diameter of 450mm and the hole depth to be detected of 400mm as an example, in order to ensure the necessary rigidity and the corresponding wall thickness of the plug gauge, even if a lightening hole is arranged, the mass of the plug gauge is between 250kg and 300kg, which cannot be born by the physical strength of people.

In particular, in many cases, on-line measurement is required during machining, and in on-line machining, the axis of the hole is often horizontal, so that it is more difficult to detect the plug gauge horizontally and insert the plug gauge into the hole of the heavy machinery. Because the plug gauge is large in mass, cannot be moved and held, the plug gauge has three difficulties: firstly, the plug gauge cannot keep the axis horizontal state; secondly, the plug gauge cannot rotate around the axis of the plug gauge, or the plug gauge is slid and rotated to adapt to the taper and the contact rate of the red lead powder detection taper hole, or the threads are screwed in and screwed out, or the center of the external spline tooth crest of the plug gauge is superposed with the central plane of the internal spline tooth groove of the workpiece to be detected; and thirdly, the universal gauge cannot extend into the hole of the workpiece to be detected and can keep long-time balance. No matter what kind of plug gauge is, no-go gauge or no-go gauge, it is necessary to overcome these three difficulties simultaneously in use, and it is also required to be able to adjust with high precision.

If the plug gauge is balanced in a counterweight mode, the total weight of the plug gauge and the counterweight is doubled, the axial length is doubled, the on-line measurement of the heavy plug gauge is inconvenient, the operation space of a machine tool is often insufficient, and the axial rotation is difficult to realize.

In a word, when the dimension tolerance and the form and position tolerance of a large-specification hole structure in the field of heavy machinery are inspected by using a taper plug gauge, a thread plug gauge and a comprehensive spline plug gauge, no convenient and reliable hoisting method and device can meet the requirement of the inspection device and cannot be used on line at present because the plug gauge is large in mass. Therefore, the plug gauge acceptance method is limited to be applied to the inspection of large-specification hole structures, and the special comprehensive inspection effects of the conical plug gauge, the thread plug gauge and the comprehensive spline plug gauge are lost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that a hoisting accessory of big mass plug gauge is provided. The hoisting device can conveniently realize six-freedom-degree adjustment of three translation, three rotation and the like of the large-mass plug gauge, the go gauge conveniently extends into a workpiece hole to keep balance when a workpiece is qualified, the no-go gauge cannot pass through the accurate fine-adjustment position, and the taper and the contact rate of the taper hole can be checked, so that the plug gauge inspection method and the plug gauge inspection technology can be applied to inspection of hole structures of heavy mechanical parts. And simultaneously, the utility model discloses hoisting accessory can also realize on-line measuring.

The utility model relates to a hoisting accessory of big mass plug gauge, it includes bow-shaped jib, positive and negative tooth double-screw bolt, special nut, spacer assembly, ring, connecting block, rings; the arched suspender is divided into three parts, wherein the upper part is an inclined section, the lower part is a horizontal section, the middle vertical section is connected with the upper part and the lower part, and the horizontal section is positioned below the inclined section; the horizontal section of the arched suspender is a stepped shaft, a ring is arranged on the left section of the arched suspender, the ring is arranged in an arc ring groove of an inner hole of the plug gauge, two ends of the ring are provided with a retaining sleeve assembly, a nut is screwed with the thread of the outer section of the left section of the horizontal section of the arched suspender, and the retaining sleeve assembly is tightly pressed on the end surface of the ring; the upper section of the inclined section of the arched suspender is a threaded section, a special nut is screwed on the threaded section through an axial threaded hole, a large threaded hole is arranged in the vertical direction of the special nut, threads are arranged at the position, corresponding to the large threaded hole of the special nut, of the lower part of the connecting block, the lower end of the positive and negative threaded stud is connected with the large threaded hole of the special nut, and the upper end of the positive and negative threaded stud is connected with the threaded hole of the connecting; the screw threads at two ends of the positive and negative screw studs are opposite in rotating direction, one end is left-handed and the other end is right-handed; the axial threaded hole and the large threaded hole of the special nut have the same rotating direction; the upper part of the connecting block is connected with the hanging ring.

Furthermore, the outer part of the circular ring is an arc surface, the inner hole of the plug gauge is provided with a corresponding arc ring groove, and the arc radius R on the arc surface of the circular ring₁Arc radius R of arc ring groove of plug gauge₂Equal or R₁Slightly smaller than R₂。

Further, when the circular ring is hooked into the circular-arc ring groove, the central section Q of the circular-arc ring groove coincides with the cross section P through which the gravity center of the plug gauge 9 passes.

Furthermore, the inner hole of the circular ring is a circular hole and is in clearance fit with the left section of the horizontal section of the arched suspender.

Further, the spacer sleeve assembly is composed of a plurality of spacer sleeves with different lengths.

Furthermore, an included angle between the axis of the large threaded hole and the axis of the axial threaded hole in the vertical direction of the special nut is gamma, an included angle between the axis of the inclined section of the arched suspender and the axis of the horizontal section of the arched suspender is beta, and the angle is gamma plus beta is 90 degrees; the axial lead L of the positive and negative tooth stud is coincident or nearly coincident with the central section Q of the circular arc ring groove.

Furthermore, the hoisting device also comprises a pin and a hand-held rod; a unthreaded hole is formed in the protruding block at the bottom of the connecting block, a small threaded hole is formed in the special nut in the vertical direction, the lower end of the pin is connected with the small threaded hole of the special nut, and the upper end of the pin is matched with the unthreaded hole; the hand holding rod passes through a transverse hole of the special nut from front to back; the distance between the center of the unthreaded hole and the center of the screw hole of the connecting block is equal to the distance between the center of the small screw hole and the center of the large screw hole of the special nut; the screwing directions of the small threaded hole and the large threaded hole of the special nut are the same.

Further, get upThe lifting device also comprises a detection auxiliary mechanism, wherein the detection auxiliary mechanism comprises a bolt, a screw, a deflector rod and a handle; the shifting rod is connected with the plug gauge through two bolts and tightly pressed on the end face of the plug gauge, the two screws are positioned on the outer side of the bolts, the screws are screwed with the threaded holes of the shifting rod, and the bottom of the shifting rod is pressed on the end face of a workpiece; the handle is connected with the deflector rod through threads, and the center of the handle is connected with the axial lead O of the plug gauge₁And (4) overlapping.

Before hoisting: firstly, determining the size of each blocking sleeve in a blocking sleeve assembly according to the position of an inner arc groove of the plug gauge and the length size of the plug gauge, fixing the axial position of a circular ring through the blocking sleeve, a nut and a shaft shoulder of a horizontal section of an arched suspender, hooking an outer arc of the circular ring in the arc groove of the plug gauge, and simultaneously ensuring that a proper axial space d is formed between the arched suspender and the outer end surface of the plug gauge after the plug gauge is hung; then, adjusting the special nut to ensure that the axial lead L of the stud with the positive and negative teeth is coincident or nearly coincident with the central section Q of the circular ring; then a hook on the crane is put through the hanging ring.

When hoisting: the circular ring is hooked on the circular arc ring groove of the plug gauge, the plug gauge is lifted by the crane through the lifting ring, the plug gauge is plugged into a workpiece to be detected, and therefore the on-line detection of the large-size inner cone, the large-size inner thread and the large-size inner spline in the machining process of the heavy machinery is achieved.

During inspection, in the process of hoisting and placing the large-mass plug gauge into an inner hole of a workpiece to be inspected, coordinates of the plug gauge and X, Y coordinates of the workpiece to be inspected are consistent by controlling the position of a crane and assisting in pushing and pulling, and a crane is controlled to roughly adjust and coordinate with fine adjustment of a positive and negative stud to make the Z coordinates of the height consistent; the axial direction of the plug gauge is consistent with the axial direction of the workpiece to be detected by controlling the coordinates of the plug gauge rotating around the X axis and the Z axis through the handle, and the coordinates of the plug gauge rotating around the Y axis are consistent with the circumferential angle of the workpiece to be detected by rotating the plug gauge through the deflector rod or the plug gauge rotating around the Y axis is used for detecting the taper and the contact rate of the taper.

Therefore, the utility model discloses the hoisting accessory of big quality feeler gauge can realize six degree of freedom adjustments such as three translation and three rotation of big quality feeler gauge portably, leads to the rule and conveniently stretches into the downthehole keep balanced of work piece when the work piece is qualified, and the no-go gage also can not pass through in accurate position of fine tuning, still can carry out the tapering and the contact rate inspection of taper hole to make the method and the technique of feeler gauge inspection can use in heavy machine part hole class structure inspection. And simultaneously, the utility model discloses hoisting accessory can also realize on-line measuring. Therefore, in the heavy machinery field, the utility model discloses the hoisting accessory of big mass plug gauge can realize the initiative and measure, makes jumbo size inner cone, internal thread, rectangle or involute internal spline obtain on-line inspection and control to improve the product percent of pass, reduce the inspection cost, reduce the operation degree of difficulty.

Drawings

The invention will be further explained with reference to the drawings and the detailed description below:

fig. 1 is a front view of the lifting device of the present invention;

fig. 2 is a right side view of the lifting device of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is an enlarged schematic view at K in fig. 1.

Detailed Description

Example 1

The utility model relates to a hoisting accessory of a large-mass plug gauge, which comprises an arch-shaped suspender 8, a positive and negative tooth stud 5, a special nut 6, a nut 10, a spacer assembly 11, a ring 12, a connecting block 2 and a hanging ring 1; the arched suspender 8 is divided into three parts, the upper part is an inclined section, the lower part is a horizontal section, the middle vertical section is connected with the upper part and the lower part, and the horizontal section is positioned below the inclined section; the horizontal section of the arched suspender 8 is a stepped shaft, a ring 12 is arranged on the left section of the arched suspender, the ring 12 is arranged in an arc ring groove 15 of an inner hole of the plug gauge 9, two ends of the ring are provided with a retaining sleeve assembly 11, a nut 10 is screwed with the thread of the outer section of the left section of the horizontal section of the arched suspender 8, and the retaining sleeve assembly 11 is tightly pressed on the end surface of the ring 12; the upper section of the inclined section of the arched suspender 8 is a threaded section, the special nut 6 is screwed on the threaded section through an axial threaded hole, a large threaded hole is arranged in the vertical direction of the special nut 6, threads are arranged at the position of the lower part of the connecting block 2 corresponding to the large threaded hole of the special nut 6, the lower end of the stud 5 with positive and negative teeth is connected with the large threaded hole of the special nut 6, and the upper end of the stud is connected with the threaded hole of the connecting block 2; the screw thread rotating directions of two ends of the positive and negative screw stud 5 are opposite, one end rotates left and the other end rotates right; the axial threaded hole and the large threaded hole of the special nut 6 have the same rotating direction; the upper part of the connecting block 2 is connected with the hanging ring 1.

In the hoisting and using process, the circular ring 12 is always in the circular-arc ring groove 15 of the inner hole of the plug gauge 9, the connection of the circular ring and the plug gauge is guaranteed, and meanwhile, the nut has the axial blocking effect on the plug gauge, so that the plug gauge is prevented from sliding off.

Example 2

The utility model discloses in the lifting device: the outer part of the circular ring 12 is a circular arc surface, the inner hole of the plug gauge 9 is provided with a corresponding circular arc ring groove 15, and the circular arc radius R on the circular arc surface of the circular ring 12₁The radius R of the circular arc with the circular arc ring groove 15 of the plug gauge 9₂Equal or R₁Slightly smaller than R₂。

Arc radius R of ring 12₁Is equal to or slightly smaller than the arc radius R of the arc ring groove 15₂The lifting appliance can be ensured to be always in the circular arc ring groove of the plug gauge, so that the lifting appliance cannot be separated from the plug gauge, and the safe use of the plug gauge in the inspection process is ensured.

Example 3

The utility model discloses in the lifting device: the inner hole of the circular ring 12 is a circular hole and is in clearance fit with the left section of the horizontal section of the arched suspender 8.

The circular ring 12 is in clearance fit with the arched suspender 8, can roll around a circular shaft at the horizontal section of the arched suspender 8, has small rolling resistance, and realizes that the plug gauge rolls around the self axis O₁And (4) scrolling.

Example 4

The utility model discloses in the lifting device: when the circular ring 12 is hooked into the circular-arc ring groove 15, the central section Q of the circular-arc ring groove 15 is superposed with the cross section P through which the gravity center of the plug gauge 9 passes.

In this way it is ensured that the plug gauge is automatically and horizontally lifted when the arc outside the ring 12 is inside the arc of the arc ring groove 15. The gravity center of the plug gauge 9 refers to the gravity center of the whole plug gauge direct connection piece.

Example 5

The utility model discloses in the lifting device: the spacer assembly 11 is composed of a plurality of spacers having different lengths.

The spacer sleeve assembly 11 functions as: firstly, the movable special nut is matched and adjusted with a plurality of retaining sleeves with different lengths, so that the axial lead L of the stud with the positive and negative teeth is superposed or close to the central section Q of the superposed circular arc ring groove 15, and the plug gauge is ensured to be horizontally lifted; 2. the number of the stop sleeves is increased or decreased to be suitable for the length of the plug gauge, and the positions of the long and short parts are adjusted to ensure that the arc-shaped hanging rod and the workpiece 18 still have a proper space dimension d when the plug gauge is detected to the deepest limit, so that the arc-shaped hanging rod 8 cannot touch the workpiece 18 to be detected.

Example 6

The utility model discloses in the lifting device: the included angle between the axis of the large threaded hole and the axis of the axial threaded hole in the vertical direction of the special nut 6 is gamma, the included angle between the axis of the inclined section of the arched suspender 8 and the axis of the horizontal section is beta, and the angle is gamma plus beta is 90 degrees; the axial lead L of the positive and negative tooth stud 5 is coincident or nearly coincident with the central section Q of the circular arc ring groove 15.

When in hoisting, the horizontal section of the arch-shaped suspender 8 keeps two conditions of the horizontal axis: γ + β is 90 °; the axial lead L of the positive and negative tooth stud 5 is coincident or nearly coincident with the central section Q of the circular arc ring groove 15. The special nut 6 is rotated to move along the thread section on the inclined section of the arch-shaped suspension rod 8, the positive and negative tooth stud 5 connected with the large threaded hole of the special nut 6 is driven to move, and the axial lead L of the positive and negative tooth stud 5 can be coincided with or close to coincided with the central section Q of the circular arc ring groove 15.

When the axial lead L of the positive and negative tooth stud 5 is superposed with the central section Q of the circular arc ring groove 15, the axial lead of the horizontal section of the arched suspender is horizontal, and when the arched suspender is lifted, the center of the circular arc groove is on the gravity center of the plug gauge 9, so that the axial lead L of the positive and negative tooth stud 5 is extended and then passes through the gravity center of the plug gauge 9, and the lower section of the arched suspender is horizontal.

When the axial lead L of the positive and negative tooth stud 5 is approximately coincident with the central section Q of the circular arc ring groove 15, the axis of the horizontal section of the arch-shaped suspender is approximately horizontal, when in hoisting, the plug gauge can freely rotate because the plug gauge is supported on the outer circular arc of the circular ring through the circular arc ring groove, and the axial lead of the plug gauge is still automatically kept horizontal because the central section Q of the circular arc ring groove 15 is coincident with the cross section P of the gravity center of the plug gauge.

Example 7

The lifting device of the utility model also comprises a pin 4 and a hand holding rod 7; a unthreaded hole 3 is formed in a protruding block at the bottom of the connecting block 2, a small threaded hole is formed in the special nut 6 in the vertical direction, the lower end of the pin 4 is connected with the small threaded hole of the special nut 6, and the upper end of the pin is matched with the unthreaded hole 3; the hand holding rod 7 passes through a transverse hole of the special nut 65 from front to back; the distance between the center of the unthreaded hole 3 and the center of the screw hole of the connecting block 2 is equal to the distance between the center of the small screw hole and the center of the large screw hole of the special nut 6; the screwing directions of the small threaded hole and the large threaded hole of the special nut 6 are the same.

The pin 4 connects the connecting block 2 with the special nut 6, when the wrench pulls the positive and negative tooth stud 5, the connecting block 2 is kept against rotation under the action of the pin 4, which is convenient for Z coordinate adjustment; meanwhile, the opposite torque of the wrench is applied to the handrail 7, so that the plug gauge is prevented from rotating around the Z axis due to the torque of the wrench.

Example 8

The lifting device of the utility model also comprises a detection auxiliary mechanism, the detection auxiliary mechanism comprises a bolt 14, a screw 16, a shift lever 17 and a handle 19; the shifting rod 17 is connected with the plug gauge 9 through two bolts 14 and is tightly pressed on the end face of the plug gauge 9, the two screws 16 are positioned at the outer side of the bolts 14, the screws 16 are screwed with the threaded holes of the shifting rod 17, and the bottom of the screws is pressed on the end face of the workpiece 18; the handle 19 is connected with the deflector rod 17 through a screw thread, and the center of the handle is connected with the axial lead O of the plug gauge 9₁And (4) overlapping.

The detection auxiliary mechanism has the following functions: the bolt 14 connects the shift lever 17 with the plug gauge 18 to form a whole body, which is convenient for adjustment; the screw 16 can push out the plug gauge when the plug gauge is not easy to take out; when the plug gauge detects the inner hole of a workpiece, the adjustment of multiple degrees of freedom can be carried out through the adjustment of the deflector rod 17 and the handle 19.

Before hoisting: firstly, determining the size of each retaining sleeve in a retaining sleeve assembly 11 according to the position of an inner arc groove of a plug gauge 9 and the length size of the plug gauge, fixing the axial position of a circular ring 12 through the retaining sleeve, a nut 10 and a shaft shoulder of the horizontal section of an arched suspender 8, hooking the outer arc of the circular ring in the arc groove of the plug gauge, and simultaneously ensuring that a proper axial space d is formed between the arched suspender and the outer end surface of the plug gauge after the plug gauge is hung; then, the special nut 6 is adjusted to ensure that the axial lead L of the stud 5 with positive and negative teeth is coincident or nearly coincident with the central section Q of the circular ring 2; then a hook on the crane is put through the hanging ring 1.

When hoisting: the circular ring 12 is hooked on the circular arc ring groove 15 of the plug gauge, the plug gauge is lifted by a crane through the lifting ring, and the plug gauge 9 is plugged into a workpiece 18 to be detected, so that the online detection of the large-size inner cone, the large-size inner thread and the large-size inner spline of the heavy machinery in the machining process is realized.

During the machining process of the plug gauge 9, the central section Q of the circular-arc ring groove 15 of the plug gauge is ensured to coincide with the cross section P through which the gravity center of the plug gauge 9 passes. The screwing length of the two ends of the positive and negative tooth stud 5, the special nut and the connecting block is more than 10 teeth, and the screwing length is adjusted within a half circle or 1mm to ensure the safety.

During inspection, in the process of hoisting and placing the large-mass plug gauge 9 into an inner hole of a workpiece 18 to be inspected, coordinates of the plug gauge and X, Y coordinates of the workpiece to be inspected are consistent by controlling the position of a crane and assisting in pushing and pulling, and a crane is controlled to roughly adjust and coordinate with fine adjustment of the positive and negative threaded studs 5 to make the Z coordinates of the height consistent; the handle 19 is used for controlling the coordinates of the plug gauge rotating around the X axis and the Z axis to ensure that the axial directions of the plug gauge and the workpiece to be detected are consistent, and the deflector rod 17 is used for rotating the plug gauge to ensure that the coordinates of the plug gauge rotating around the Y axis are consistent with the circumferential angle of the workpiece to be detected or the plug gauge rotating around the Y axis to detect the taper and the contact rate of the plug gauge.

That is to say: when the large-mass plug gauge 9 is hoisted by the arch-shaped suspension rod 8 and is successfully put into an inner hole of a workpiece 18 for detection, the problems of six-degree-of-freedom adjustment of the plug gauge in X, Y, Z, rotation around an X axis, rotation around a Y axis and rotation around a Z axis must be solved: firstly, the X-direction and Y-direction coordinates (horizontal direction) are adjusted mainly by controlling a crane and are adjusted secondarily by manpower, so that the axial lead O of the plug gauge is ensured₁The coordinate of the axis of the structure to be detected of the workpiece 18 to be detected is consistent with the X-direction coordinate of the axis of the structure to be detected; the Y direction can enter through the plug gauge 9 or the shift lever 17, and the plug gauge can be pulled out by overcoming the axial friction force by using the screw 16; secondly, Z-direction coordinates (height direction) are adjusted to be main through a crane, and the positive and negative tooth studs 5 are adjusted to be auxiliary: manually controlling the crane to roughly adjust the upper and lower positions of the plug gauge, wherein the error is within 1 mm; then, the positive and negative threaded stud 5 is adjusted, and the positive and negative threads are arranged at the two ends of the positive and negative threaded studThe patterns can be accurately adjusted to the required height, and the patterns can be adjusted only within a half circle or 1mm, so that the safety problem is avoided when the patterns are excessively adjusted; when in adjustment, the flat part in the middle of the stud 5 with the positive and negative teeth is pulled by an open-ended wrench, and the reverse torque of the wrench is applied by holding the holding rod 7 by hands, so that the plug gauge is prevented from rotating around the Z axis abnormally caused by the torque of the wrench; meanwhile, when the wrench is used for turning the positive and negative screw studs 5, the connecting block 2 is kept against rotation under the action of the pin 4, so that the Z coordinate can be conveniently and finely adjusted; thirdly, the coordinate rotating around the X axis is automatically balanced by the coincidence of the central section Q of the circular arc ring groove 15 and the cross section P passing through the gravity center of the plug gauge 9, and a small F3 force can be applied through the handle 19 in the detection process to carry out necessary timely adjustment; and fourthly, adjusting the coordinate rotating around the Y axis through a driving lever 17 and a bolt 14, respectively applying force F1 and F2 to two ends b and c of the driving lever during adjustment to generate a moment M1+ M2, and enabling the circular ring 12 to roll under the action of the moment, so that the coordinate rotating around the Y axis of the plug gauge 9 is consistent with the structure to be detected of the workpiece to be detected, for example, the tooth crest central plane of the plug gauge is aligned with the tooth socket central plane of the workpiece to be detected. If the plug gauge is a taper plug gauge, the method can be used for repeatedly rotating the Y axis and coating red lead powder on the conical surface of the plug gauge to finish the inspection of the taper of the conical hole and the contact rate of the conical hole; fifthly, the coordinate rotating around the Z axis can be controlled by a deflector rod 17 or a handle 19, so that the axial lead of the plug gauge is consistent with the axial lead of the structure to be detected of the workpiece 18 to be detected.

From the foregoing, the utility model discloses six degree of freedom adjustments such as three translation and three rotation that big quality feeler gauge can be realized lightly to hoisting accessory of big quality feeler gauge, leads to the rule and conveniently stretches into the downthehole keep balance of work piece when the work piece is qualified, and the no-go gage also can not pass through in accurate position of fine tuning, still can carry out the tapering and the contact rate inspection of taper hole to make the method and the technique of feeler gauge inspection can use in heavy machine part hole class structure inspection, and realize on-line measuring.

The utility model discloses hoisting accessory of big mass plug gauge's advantage is: the large-mass plug gauge can be horizontally applied to the machining process in the field of heavy machinery, active measurement is realized, and large-size inner conical, inner threaded, rectangular or involute inner splines are subjected to online inspection and control, so that the product percent of pass is improved, the inspection cost is reduced, and the operation difficulty is reduced.

Claims

1. The utility model provides a hoisting accessory of big mass plug gauge, characterized by: the device comprises an arched suspender (8), a positive and negative tooth stud (5), a special nut (6), a nut (10), a blocking sleeve component (11), a circular ring (12), a connecting block (2) and a hanging ring (1); the arched suspender (8) is divided into three parts, the upper part is an inclined section, the lower part is a horizontal section, the middle vertical section is connected with the upper part and the lower part, and the horizontal section is positioned below the inclined section; the horizontal section of the arched suspender (8) is a stepped shaft, a ring (12) is arranged on the left section of the arched suspender, the ring (12) is arranged in an arc ring groove (15) of an inner hole of the plug gauge (9), two ends of the ring are provided with a retaining sleeve assembly (11), a nut (10) is screwed with the thread of the outer section of the left section of the horizontal section of the arched suspender (8), and the retaining sleeve assembly (11) is tightly pressed on the end surface of the ring (12); the upper section of the inclined section of the arched suspender (8) is a threaded section, the special nut (6) is screwed on the threaded section through an axial threaded hole, a large threaded hole is arranged in the vertical direction of the special nut (6), threads are arranged at the corresponding position of the lower part of the connecting block (2) and the large threaded hole of the special nut (6), the lower end of the stud (5) with positive and negative teeth is connected with the large threaded hole of the special nut (6), and the upper end of the stud is connected with the threaded hole of the connecting block (2); the screw thread rotating directions of two ends of the positive and negative screw studs (5) are opposite, and one end rotates leftwards and the other end rotates rightwards; the axial threaded hole and the large threaded hole of the special nut (6) have the same rotating direction; the upper part of the connecting block (2) is connected with the hanging ring (1).

2. A lifting device as claimed in claim 1, wherein: the outer part of the circular ring (12) is an arc surface, the inner hole of the plug gauge (9) is provided with a corresponding arc ring groove (15), and the arc radius R on the arc surface of the circular ring (12)₁The radius R of the arc ring groove (15) of the plug gauge (9)₂Equal or R₁Slightly smaller than R₂。

3. The lifting device of claim 2, wherein: when the circular ring (12) is hooked into the circular-arc ring groove (15), the central section Q of the circular-arc ring groove (15) is superposed with the cross section P through which the gravity center of the plug gauge (9) passes.

4. A lifting device as claimed in claim 1, wherein: the inner hole of the circular ring (12) is a circular hole and is in clearance fit with the left section of the horizontal section of the arched suspender (8).

5. A lifting device as claimed in claim 1, wherein: the spacer sleeve assembly (11) is composed of a plurality of spacer sleeves with different lengths.

6. A lifting device as claimed in claim 1, wherein: an included angle between the axis of the large threaded hole and the axis of the axial threaded hole in the vertical direction of the special nut (6) is gamma, an included angle between the axis of the inclined section of the arched suspender (8) and the axis of the horizontal section is beta, and the angle is gamma plus beta is 90 degrees; the axial lead L of the positive and negative tooth stud (5) is coincident or nearly coincident with the central section Q of the circular arc ring groove (15).

7. A lifting device as claimed in claim 1, wherein: the lifting device also comprises a pin (4) and a hand-held holding rod (7); a unthreaded hole (3) is formed in a protruding block at the bottom of the connecting block (2), a small threaded hole is formed in the vertical direction of the special nut (6), the lower end of the pin (4) is connected with the small threaded hole of the special nut (6), and the upper end of the pin is matched with the unthreaded hole (3); the hand-held rod (7) passes through the transverse hole of the special nut (6) from front to back; the distance between the center of the unthreaded hole (3) and the center of the screw hole of the connecting block (2) is equal to the distance between the center of the small screw hole and the center of the large screw hole of the special nut (6); the screwing directions of the small threaded hole and the large threaded hole of the special nut (6) are the same.

8. A lifting device as claimed in claim 1, wherein: the hoisting device also comprises a detection auxiliary mechanism, and the detection auxiliary mechanism comprises a bolt (14), a screw (16), a deflector rod (17) and a handle (19); the shifting rod (17) is connected with the plug gauge (9) through two bolts (14) and is tightly pressed on the end surface of the plug gauge (9), the two screws (16) are positioned at the outer side of the bolts (14), the screws (16) are screwed with the threaded holes of the shifting rod (17), and the bottom of the screws is pressed on the end surface of a workpiece (18); the handle (19) is connected with the deflector rod (17) through a thread, and the center of the handle is connected with the axial lead O of the plug gauge (9)₁And (4) overlapping.