Clamping tool for secondary quenching of conical ferrule

Abstract

The utility model belongs to the technical field of bearing clamping tools, and particularly relates to a conical ferrule secondary quenching clamping tool which comprises two driving connecting rods, two follow-up connecting rods and two pull-assisting springs, each driving connecting rod comprises a moving part and a clamping part, and the clamping parts of the two driving connecting rods are oppositely arranged. The bottom end of the clamping part is connected with a supporting plate used for supporting the conical ferrule from the bottom, the moving parts of the two driving connecting rods are hinged through a first hinge point, one ends of the two follow-up connecting rods are hinged to the moving parts of the two driving connecting rods through two second hinge points respectively, and the other ends of the two follow-up connecting rods are hinged through a third hinge point; an adjusting plate is fixed to the moving part of the driving connecting rod, a plurality of connecting holes are formed in the adjusting plate, pull-assisting springs are arranged on the two sides of the clamping tool respectively, and the bottom ends of the pull-assisting springs are connected to the connecting holes of the adjusting plate. The tension-assisting spring is added, an operator can pull the clamp open through the tension-assisting spring simply, and the problem that the operator is difficult to operate is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bearing clamping frock technical field, concretely relates to a kind of secondary quenching clamping frock of conical sleeve ring. BACKGROUND

[0002] In recent years, wind power bearing selection gradually begins to be inclined to conical bearing, and size is larger and larger, and effective wall thickness is thicker and thicker. The carburized steel first needs to be sent to the pit-type heating furnace for heating and heat preservation in the secondary quenching process, and then the sleeve ring and the shelf are taken out from the pit-type furnace by hoisting. Two operators need to pull apart the previous heavy fixture. Due to the heaviness of the fixture, the weight of a single fixture leg is 100 kg, and it is difficult for two operators to pull apart the fixture. Then the fixture clamps the carburized steel conical outer ring. The sleeve ring is placed on the quenching mold by the row of hoist. After the mold upper cover is pressed tightly, secondary quenching is carried out. The key point in the whole process is that the carburized steel conical outer ring is taken out from the heating furnace and then put into the quenching tank. The whole air cooling time is 5-7 minutes. Since the surface of the sleeve ring is exposed to air for too long, the surface temperature decreases, which cannot meet the process requirements, so that the surface hardness of the outer ring is lower than the process requirements. Due to the taper problem of the conical outer ring, the surface temperature loss of the thin part is 10-20℃ more than that of the thick part, so that the cooling effect of the two sides is different after quenching, and the expansion and contraction quality of the outer diameter of the two sides is inconsistent. SUMMARY

[0003] According to the defects of the above-mentioned prior art, the utility model aims to provide a secondary quenching clamping frock for conical sleeve ring, which optimizes the secondary quenching fixture for carburized steel to solve the problem of rapid transfer of large-scale conical sleeve ring secondary quenching.

[0004] To achieve the above-mentioned purpose, the utility model employs the technical scheme of a secondary quenching clamping frock for conical sleeve ring, which includes two driving links, two follow-up links and two pull-out springs. The driving link includes a moving part and a clamping part. The clamping parts of the two driving links are oppositely arranged, and the bottom end of the clamping part is connected with a support plate for supporting the conical sleeve ring from the bottom. The moving parts of the two driving links are hinged through a first hinge point. One end of each follow-up link is hinged with the moving part of each driving link through a second hinge point. The second hinge points are arranged on the end of the moving part of each driving link away from the clamping part. The other end of each follow-up link is hinged through a third hinge point. By changing the opening and closing angle of the moving part of each driving link, the distance between the two clamping parts is controlled. An adjusting plate is fixed on the moving part of the driving link. The adjusting plate is provided with a plurality of connecting holes. The two sides of the clamping frock are respectively provided with pull-out springs. The bottom end of the pull-out spring is connected with the connecting hole of the adjusting plate. The pulling force of the pull-out spring is adjusted through the connecting holes at different positions.

[0005] Further, the moving part, the part above the first hinge point is the upper moving part, the part below the first hinge point is the lower moving part, the adjusting plate is fixed on the lower moving part, and the plurality of connecting holes are arranged at intervals along the extension direction of the lower moving part.

[0006] Further, four connecting holes are arranged at intervals on the adjusting plate.

[0007] Further, the top ends of the two pull assisting springs are connected to the second hinge points on the same side respectively.

[0008] Further, the moving part and the clamping part are integrally formed.

[0009] Further, the clamping part is vertically arranged, the moving part and the clamping part form an obtuse angle, and the reinforcing rib plate is arranged at the joint of the moving part and the clamping part.

[0010] Further, the two driving links are symmetrically arranged along the line connecting the first hinge point and the third hinge point, the two driven links are symmetrically arranged along the line connecting the first hinge point and the third hinge point, the two driving links and the two driven links are hingedly connected through the first hinge point, the two second hinge points and the third hinge point to form a scissors structure, and the length of the driving link is greater than that of the driven link.

[0011] Further, the third hinge point is connected with a lifting ring for lifting.

[0012] The clamping tool of the utility model has the advantages that the clamping tool of the utility model is provided with pull assisting springs, and the operator can simply pull the clamping tool apart through the pull assisting springs, thereby solving the problem of difficult operation and saving operation time. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a clamping tool structure schematic view of the utility model;

[0014] Figure 2 It is Figure 1 It is an enlarged view of A in the middle;

[0015] In the drawing: 1, driving link, 101, moving part, 102, clamping part, 2, driven link, 3, pull assisting spring, 4, supporting plate, 5, first hinge point, 6, second hinge point, 7, third hinge point, 8, adjusting plate, 9, connecting hole, 10, reinforcing rib plate. DETAILED DESCRIPTION

[0016] For the above purposes, features and advantages of the present application to be more apparent and understandable, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different manners other than those described herein, and those skilled in the art can make similar improvements without departing from the scope of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0017] Referring to the accompanying drawings Figures 1-2 A conical sleeve secondary quenching clamping tool, comprising two driving links 1, two following links 2 and two pull assisting springs 3, the driving link 1 comprises a moving part 101 and a clamping part 102, the clamping parts 102 of the two driving links are oppositely arranged, a support plate 4 for supporting the conical sleeve from the bottom is connected to the bottom end of the clamping part 102, the moving parts of the two driving links 1 are hinged through a first hinge point 5, one end of the two following links 2 is hinged with the moving parts of the two driving links 1 through two second hinge points 6 respectively, the two second hinge points 6 are arranged on the ends of the moving parts of the two driving links away from the clamping parts respectively, the other end of the two following links 2 is hinged through a third hinge point 7, the two driving links 1 and the two following links 2 are hinged to form a scissor structure through the first hinge point 5, the two second hinge points 6 and the third hinge point 7, the distance between the two clamping parts 102 is controlled by changing the opening and closing angle of the moving parts 101 of the two driving links; the moving part of the driving link 1 is fixed with an adjusting plate 8, four connecting holes 9 are arranged on the adjusting plate 8, the pull assisting springs 3 are arranged on the two sides of the clamping tool respectively, the bottom end of the pull assisting spring 3 is connected to the connecting hole 9 of the adjusting plate, the tension of the pull assisting spring 3 is adjusted by connecting the bottom end of the pull assisting spring 3 to different connecting holes, and the top end of the pull assisting spring 3 is connected to the same side second hinge point 5.

[0018] Further, the moving part 101, the upper part of the first hinge point 5 is an upper moving part, and the lower part of the first hinge point is a lower moving part, the adjusting plate 8 is fixed on the lower moving part, and the four connecting holes 9 are arranged at intervals along the extension direction of the lower moving part. The tension of the pull assisting spring is changed by connecting the bottom end of the pull assisting spring 3 to different connecting holes, so as to adjust the tension, and the specific arrangement position of the adjusting plate, the interval distance of the adjacent connecting holes is designed according to the specific sleeve weight and the elasticity of the pull assisting spring in the processing site.

[0019] Further, in order to ensure the strength and stability of the clamp, the moving part 101 and the clamping part 102 are integrally formed. The clamping part is vertically arranged, the height of the clamping part is greater than the height of the conical sleeve, the moving part and the clamping part form an obtuse angle, and a reinforcing rib plate 10 is arranged at the joint of the moving part 101 and the clamping part 102.

[0020] Further, the two active connecting rods 1 are symmetrically arranged along the line connecting the first hinge point 5 and the third hinge point 7, the two passive connecting rods 2 are symmetrically arranged along the line connecting the first hinge point 1 and the third hinge point 7, and the length of the active connecting rod 1 is greater than the length of the passive connecting rod 2. The first hinge point 5, the two second hinge points 6, and the third hinge point 7 are all hinged through a pin shaft, and the active connecting rod 1 and the passive connecting rod 2 are provided with corresponding pin holes.

[0021] Further, the third hinge point 7 is connected with a lifting ring for lifting.

[0022] The optimized secondary quenching clamp tool for carburized steel adds a pull assisting spring, and the operator only needs to pull the clamp through the pull assisting spring, which solves the operation difficulty and time problem of the operator, and the structure of the quenching clamp is strengthened, the width of the clamp is widened, and the transverse plate is shortened, and the weight of the 2-ton ring or mold is realized through calculation; at the same time, the weight of the tool itself is reduced, the air cooling operation time of the carburized steel conical outer ring is shortened to 2-3 minutes, the problem of inconsistent product outer diameter size on the upper and lower surfaces is further solved, the problem of inconsistent bearing surface hardness is solved, and the optimized carburized steel clamp tool solves the problems of the taper of the large carburized steel conical ring after quenching and tempering and the problem of uneven hardening layer after machining after several years of production practice.

[0023] Through the use of two quenching clamp tools, 10 large carburized steel conical outer rings (diameter 2000mm) are respectively subjected to quenching and tempering size verification, and under the same quenching process, the size changes are as follows:

[0024] Table I, quenching size of conical ring processed by unoptimized carburized steel secondary quenching clamp tool

[0025] Outer ring number Margin of outer diameter distance of narrow end face after quenching from finished size / mm Margin of outer diameter distance of wide end face after quenching from finished size / mm Margin of lathe outer diameter size before quenching from finished size / mm 1# 1.0-1.3 2.4-2.6 2.5 2# 1.2-1.4 2.3-2.67 2.5 3# 1.04-1.5 2.2-2.7 2.5 4# 1.3-1.7 2.7-3.0 2.5 5# 1.3-1.6 2.24-2.80 2.5 6# 1.56-1.90 2.7-2.93 2.5 7# 1.02-1.15 2.8-3.2 2.5 8# 1.09-1.26 2.7-2.90 2.5 9# 1.34-1.53 2.5-2.80 2.5 10# 1.4-1.8 2.9-3.4 2.5

[0026] Table II, quenching size of conical ring processed by quenching clamp mold of the embodiment

[0027] Outer ring number Margin of outer diameter distance of narrow end face after quenching from finished size / mm Margin of outer diameter distance of wide end face after quenching from finished size / mm Margin of lathe outer diameter size before quenching from finished size / mm 1# 3.22-3.43 3.10-3.23 2.5 2# 3.15-3.15 3.18-3.29 2.5 3# 3.07-3.13 3.01-3.13 2.5 4# 3.34-3.46 3.20-3.50 2.5 5# 3.12-3.21 3.04-3.10 2.5 6# 3.10-3.24 3.05-3.12 2.5 7# 3.10-3.16 3.35-3.38 2.5 8# 3.02-3.20 3.10-3.21 2.5 9# 2.98-3.21 3.14-3.23 2.5 10# 3.16-3.32 3.12-3.23 2.5

[0028] By using two fixtures, the second quenching and tempering size verification of 10 conical outer rings with a diameter of 2000mm is carried out, taking the No.1 piece of each test as an example, the allowance of the outer diameter of the sleeve ring before quenching is 2.5mm, the original fixture is used to clamp and transfer the sleeve ring, the allowance of the narrow end surface outer diameter of the No.1 piece after quenching is 1.0-1.3mm, that is, the shrinkage is-1.5~-1.2mm, the range value end points are the size changes of the high point and the low point at different circumferential positions, the allowance of the wide end surface outer diameter of the No.1 piece after quenching is 2.4-2.6mm, that is, the shrinkage is-0.1~0.1mm; the fixture of the embodiment is used to clamp and transfer the sleeve ring, the allowance of the narrow end surface outer diameter of the No.1 piece after quenching is 3.22-3.43mm, that is, the shrinkage is 0.72~0.93mm, the allowance of the wide end surface outer diameter of the No.1 piece after quenching is 3.10-3.23mm, that is, the shrinkage is 0.6~0.73mm.

[0029] It is concluded that by changing the structure of the quenching fixture, the air cooling time of the sleeve ring is shortened by 3-4 minutes, the size difference between the narrow end surface and the wide end surface is 0.1-0.5mm, the surface hardness of the sleeve ring meets the process requirement of 59-60HRC by optimizing the quenching fixture and shortening the air cooling time, so as to ensure the consistency of the hardness of the two sides of the outer diameter.

[0030] It should be noted that the part not described in the utility model is prior art.

[0031] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting or implying that the indicated device or element must have a particular orientation, structure and operation, so it cannot be understood as limiting the utility model.

[0032] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0033] In the utility model, unless another definite provision and limitation, the term "mount", "link", "connect", "fix" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation.For the ordinary skill in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0034] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can be that first and second features directly contact, or first and second features indirectly contact by intermediate medium.Moreover, first feature "over", "above" and "on" second feature can be that first feature is directly above or obliquely above second feature, or just indicates that the horizontal height of first feature is higher than that of second feature.First feature "under", "below" and "under" second feature can be that first feature is directly below or obliquely below second feature, or just indicates that the horizontal height of first feature is less than that of second feature.

[0035] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as "connected" to another element, it can be directly connected to the other element, or intervening elements can also be present. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0036] The above-mentioned is only the best embodiment of the utility model. Obviously, the utility model is not limited to the above-mentioned embodiment, and there are many variations. All variations that can be directly derived or thought of by the ordinary skill in the art from the disclosed content of the utility model should be considered as the protection scope of the utility model.

Claims

1. A secondary quench collet tooling for a conical bushing, characterized by: The device comprises two active links, two follow-up links and two auxiliary tension springs, the active link comprises a moving part and a clamping part, the clamping parts of the two active links are oppositely arranged, the bottom ends of the clamping parts are connected with support plates for supporting the conical sleeve ring from the bottom, the moving parts of the two active links are hingedly connected through a first hinge point, one ends of the two follow-up links are hingedly connected with the moving parts of the two active links through two second hinge points, the two second hinge points are arranged on the moving parts of the two active links away from the clamping parts, the other ends of the two follow-up links are hingedly connected through a third hinge point, the distance between the two clamping parts is controlled by changing the opening and closing angle of the moving parts of the two active links, the moving part of the active link is fixed with an adjusting plate, the adjusting plate is provided with a plurality of connecting holes, the two sides of the clamping tool are respectively provided with the auxiliary tension springs, the bottom ends of the auxiliary tension springs are connected with the connecting holes of the adjusting plate, and the tension of the auxiliary tension springs is adjusted through the connecting holes in different positions.

2. The secondary quenching clamping tool for a conical sleeve ring according to claim 1, characterized in that: The moving part is divided into an upper moving part above the first hinge point and a lower moving part below the first hinge point, the adjusting plate is fixed on the lower moving part, and the plurality of connecting holes are arranged at intervals along the extension direction of the lower moving part.

3. The secondary quenching clamping tool for a conical sleeve according to claim 1 or 2, characterized in that: The adjusting plate is provided with four connecting holes at intervals.

4. The secondary quenching clamping tool for a conical sleeve according to claim 1 or 2, characterized in that: The top ends of the two auxiliary tension springs are respectively connected with the second hinge points on the same side.

5. The secondary quench collet assembly of claim 1, wherein: The moving part and the clamping part are integrally formed.

6. The secondary quench collet assembly of claim 1, wherein: The clamping part is vertically arranged, the moving part and the clamping part form an obtuse angle, and a reinforcing rib plate is arranged at the joint of the moving part and the clamping part.

7. The secondary quench collet assembly of claim 1, wherein: The two active links are symmetrically arranged along the line connecting the first hinge point and the third hinge point, the two follow-up links are symmetrically arranged along the line connecting the first hinge point and the third hinge point, the two active links and the two follow-up links are hingedly connected through the first hinge point, the two second hinge points and the third hinge point to form a scissor structure, and the length of the active link is greater than that of the follow-up link.

8. The secondary quench collet assembly of claim 1, wherein: A lifting ring for lifting is connected above the third hinge point.

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