Turnover clamp for copper crucible

Abstract

The utility model provides a copper crucible overturning clamp which comprises a copper crucible clamping portion, a nut, a double-bearing clamp arm, a single-bearing clamp arm and a shaft pin, and the middle of the double-bearing clamp arm is rotationally connected with the middle of the single-bearing clamp arm through the shaft pin. The two copper crucible clamping parts are respectively mounted at the lower ends of the double-bearing clamp arm and the single-bearing clamp arm and are positioned through nuts; the copper crucible clamping part comprises an arc-shaped plate, a short shaft and a supporting plate; the arc-shaped plate is a conical arc surface matched with the outer wall of the copper crucible, and a round hole is formed in the center; the supporting plate is welded above the large diameter of the arc-shaped plate, and the upper end of the supporting plate can be in contact with the lower edge of an upper opening flange of the copper crucible during hoisting; one end of the short shaft is provided with threads, and the other end is welded in a central circular hole of the arc-shaped plate. The two clamp arms of the overturning clamp for the copper crucible are convenient to operate and flexible in rotation, the copper crucible can be lifted and overturned by a certain angle, and the overturning clamp for the copper crucible is suitable for overturning the copper crucible which has a high requirement on the smoothness of the side surface and is easy to generate plastic deformation of the material of the copper crucible.

Description

Technical Field

[0001] The utility model relates to a clamp technology, in particular to a copper crucible turning clamp. Background Art

[0002] At present, after vacuum melting of alloy, the copper crucible needs to be turned over to demold the alloy ingot. The outer wall of the copper crucible is smooth and has no hanging points. The current operation is to use a sling to lift and flip it. This has the following disadvantages: first, it has safety hazards. The copper crucible is easy to fall out during the flipping process, which may injure the operator; second, the copper crucible is expensive and difficult to repair after being bumped. Utility Model Content

[0003] The utility model aims to solve the problem that it is difficult to turn over the copper crucible when the copper crucible is turned over to demold the alloy ingot after vacuum melting, and to provide a copper crucible turning clamp. The clamp is easy to operate and flexible to rotate, and can lift and turn the copper crucible to a certain angle, and can effectively avoid the problem of accidental slipping of the copper crucible when it is turned over. The utility model is suitable for turning over copper crucibles that have high requirements for the smoothness of the side surface and the material itself is prone to plastic deformation.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a copper crucible flipping fixture, comprising a copper crucible clamping part, a nut, a double-bearing clamp arm, a single-bearing clamp arm and an axle pin, wherein the middle parts of the double-bearing clamp arm and the single-bearing clamp arm are rotatably connected by the axle pin; the copper crucible clamping parts are two, which are respectively installed at the lower ends of the double-bearing clamp arm and the single-bearing clamp arm, and are positioned by the nut;

[0005] The copper crucible clamping part includes an arc plate, a short shaft and a support plate; the arc plate is a conical arc surface that matches the outer wall of the copper crucible and has a circular hole in the center; the support plate is welded above the major diameter of the arc plate (the lower end of the support plate is fixed to the middle of the upper edge of the arc plate, and the length direction of the support plate is parallel to the height of the arc plate), and the upper end of the support plate can contact the lower edge of the upper flange of the copper crucible during hoisting; one end of the short shaft is provided with a thread (a thread that matches a nut), and the other end is welded in the central circular hole of the arc plate.

[0006] Furthermore, the main body of the copper crucible to be turned over is an inverted truncated cone, and an upper flange is arranged on the upper edge. The inner diameter of the upper opening of the copper crucible is larger than the inner diameter of the bottom, so as to facilitate demolding.

[0007] Furthermore, the central angle of the conical arc surface is 60-120°.

[0008] Furthermore, when the copper crucible clamping part lifts the copper crucible, the angle at which the minor axis is deflected downward is the same as the angle between the copper crucible generatrix and the axis, and the upper and lower end surfaces of the two arc-shaped plates are respectively on the same horizontal line.

[0009] Furthermore, the dual-bearing clamp arm and the single-bearing clamp arm main body are Z-shaped structures.

[0010] Furthermore, the lower ends of the double-bearing clamp arm and the single-bearing clamp arm are provided with hollow tubes with stepped holes for installing the copper crucible clamping part, and the upper ends are provided with lifting circular holes for passing the lifting belt for lifting. During lifting, the lifting circular holes on the two arms (double-bearing clamp arm and single-bearing clamp arm) should be in parallel vertical directions.

[0011] Furthermore, when the hollow tube with stepped holes is welded to the main body of the clamp arm, the assembly angle (1-5°) of the short axis of the copper crucible clamping part should be ensured. A positioning sleeve is provided in the middle of the hollow tube with stepped holes during assembly, and bearings are assembled in the stepped holes on both sides of the hollow tube with stepped holes. During assembly, the short axis of the copper crucible clamping part passes through the bearing and the positioning sleeve, and then the spacer is installed and fixed in place by a nut. The short axis of the copper crucible clamping part should be installed with a spacer before assembly to prevent the copper crucible clamping part from rotating and scratching the bearing during operation.

[0012] Furthermore, the dual-bearing clamp arm and the single-bearing clamp arm are provided with reinforcing ribs at the inflection points close to the upper opening of the copper crucible, and the provision of the reinforcing ribs can ensure the tensile strength of the clamp arm. After welding, the reinforcing ribs should leave a certain safety distance from the upper edge of the copper crucible.

[0013] Furthermore, the connection between the dual-bearing fixture arm and the axle pin is formed by welding two iron plates with stepped circular holes relative to each other. The two iron plates serve as structural parts connecting the upper and lower parts of the fixture arm. During assembly, the bearings are assembled at the circular holes with larger diameters on the inner sides of the two iron plates. The connection between the single-bearing fixture arm and the axle pin is a round tube with multiple stepped holes. During installation, the bearing is assembled at the innermost part and then the bearing gland and positioning sleeve are installed. When the two fixture arms are connected by the axle pin, it is necessary to ensure that the arc-shaped plates of the copper crucible clamping part are in relative directions; when connecting, the axle pin is passed through the dual-bearing fixture arm bearing, the positioning sleeve, the single-bearing fixture arm, and the dual-bearing fixture arm bearing in sequence, and after passing through, the positioning pin is installed in the circular hole at the end of the axle pin for positioning.

[0014] Furthermore, sufficient space should be left after welding the two iron plates at the connection of the double-bearing clamp arm to ensure that the distance between the arc plates of the two copper crucible clamping parts is less than or equal to the clamping surface of the copper crucible when the two arms are transferred and clamped, and is greater than the diameter of the upper flange of the copper crucible when loosened.

[0015] The working principle of the copper crucible turning clamp of the utility model is as follows: when working, a sling is used to pass through the hoisting circular holes on the two clamp arms, the copper crucible turning clamp is hung on the crane hook, the crane is operated to move to the copper crucible, the lower ends of the two clamp arms are manually separated, and the two copper crucible clamping parts are placed on both sides of the copper crucible, the crane is lifted, and the two clamp arms are automatically clamped (the principle is the same as that of scissors, and pulling up the sling by the crane is like holding the upper ends of the scissors by hand), and after lifting the crane, the copper crucible is manually pushed upward to complete the turning and alloy ingot demolding work.

[0016] Compared with the prior art, the copper crucible turning fixture of the utility model has the following advantages:

[0017] 1) The copper crucible turning fixture of the utility model has a simple device composition and is easy to operate. The silicone plate is used to increase the friction force, eliminating the potential safety hazard of accidental slippage and injury to operators when using the sling;

[0018] 2) The copper crucible flipping fixture of the utility model is stable and reliable when flipping, which avoids the copper crucible from falling to the ground and reduces cost waste;

[0019] 3) Production practice has proved that the copper crucible turning fixture of the utility model has fully achieved the expected effect.

[0020] In summary, the double-bearing clamp arm and the single-bearing clamp arm of the copper crucible flipping clamp of the utility model are easy to operate and flexible to rotate, and can realize the copper crucible to be lifted and flipped at a certain angle. It is suitable for flipping copper crucibles with high requirements for the smoothness of the opposite side surface and the material itself is prone to plastic deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the front view of the new copper crucible flip fixture assembly;

[0022] Figure 2 This is the left view of the new copper crucible turning fixture assembly;

[0023] Figure 3 This is a top view of the new copper crucible flip fixture assembly;

[0024] Figure 4 It is a schematic diagram of the copper crucible structure;

[0025] Figure 5 This is the front view of the copper crucible clamping part;

[0026] Figure 6 It is the left view of the copper crucible clamping part;

[0027] Figure 7 It is a top view of the copper crucible clamping part;

[0028] Figure 8 It is the front view of the double bearing fixture arm;

[0029] Fig. 9 It is the left side view of the double bearing fixture arm;

[0030] Fig.10 It is the right side view of the double bearing fixture arm;

[0031] Fig.11 This is the front view of the single bearing fixture arm;

[0032] Fig.12 It is the left side view of the single bearing fixture arm;

[0033] Fig.13 It is the right side view of the single bearing fixture arm;

[0034] Fig.14 Schematic diagram of the shaft pin structure;

[0035] Fig.15 It is a schematic diagram of the bearing cover structure. DETAILED DESCRIPTION

[0036] The present invention is further described below with reference to the embodiments:

[0037] Example 1

[0038] This embodiment discloses a novel copper crucible turning fixture, such as Figure 1-15 As shown, the main body of the copper crucible 1 to be turned over is an inverted truncated cone, with an upper flange on the upper edge. The inner diameter of the upper opening of the copper crucible 1 is larger than the inner diameter of the bottom, which is convenient for demolding. In this embodiment, the inner diameter of the upper opening of the copper crucible is 322.5 mm, the inner diameter of the bottom is 288 mm, the overall height is 416 mm, the flange diameter is 540 mm, and the flange thickness is 30 mm.

[0039] The copper crucible flipping fixture comprises a copper crucible clamping part 2, a nut 3, a double-bearing clamp arm 4, a single-bearing clamp arm 5 and an axle pin 6. There are two copper crucible clamping parts 2, which are respectively mounted on the double-bearing clamp arm 4 and the single-bearing clamp arm 5 and positioned by the nut 3; the double-bearing clamp arm 4 and the single-bearing clamp arm 5 are provided with a hollow tube with a stepped hole for mounting the copper crucible clamping part 2 at the lower part, and a round hole is provided at the upper part for passing a sling for hoisting; the double-bearing clamp arm 4 and the single-bearing clamp arm 5 are assembled at the connection through the axle pin 6.

[0040] The copper crucible clamping part is composed of an arc plate 21, a short shaft 22, and a support plate 23, and a silicone plate is pasted on the inner arc surface of the arc plate 21 after welding. The arc plate 21 is a conical arc surface with a circular hole in the center, and the conical arc surface is completely consistent with the arc surface of the copper crucible hoisting point. The support plate 23 is welded above the large diameter of the arc plate 21, and contacts the lower edge of the flange on the upper edge of the copper crucible during hoisting. One end of the short shaft 22 is threaded, and the other end passes through and just fills the central circular hole of the arc plate, and a certain angle is maintained for welding. In this embodiment, the arc surface angle of the arc plate is 90°, the width is 100mm, the thickness is 10mm, the chord length at the large diameter of the inner side of the arc plate is 276mm, and the chord length at the small diameter is 276mm; the short shaft diameter is 45mm, the length is 210mm, the thread is M42, and the length of the threaded part is 45mm; the support plate 23 is 50mm wide and 100mm high.

[0041] When the copper crucible clamping part 2 is lifting the copper crucible 1, the angle of the axis of the short axis 22 deflecting downward is the same as the angle between the copper crucible generatrix and the axis, and the two side end surfaces of the two arc plates are respectively on the same horizontal line. In this embodiment, the angle of the axis of the short axis 22 deflecting downward is 2°.

[0042] The main body of the double-bearing clamp arm 4 and the single-bearing clamp arm 5 is a Z-shaped structure, with a hollow tube with stepped holes on both sides welded on one end for assembling the copper crucible clamping part; and an iron plate with round holes welded on the other end for serving as a lifting point. The assembly angle of the axle pin of the copper crucible clamping part should be ensured when the hollow tube with stepped holes is welded to the clamp arm. A positioning sleeve is provided in the middle of the hollow tube with stepped holes during assembly, and bearings are assembled in the stepped holes on both sides. The short shaft 22 of the copper crucible clamping part 2 passes through the bearing and the positioning sleeve during assembly, and then is fixed in place by a nut after installing a spacer. The short shaft 22 of the copper crucible clamping part 2 should be installed with a spacer before assembly to prevent the copper crucible clamping part from rotating and scratching the bearing during operation. In this embodiment, the hollow tube has an outer diameter of 120 mm, an inner diameter of 88 mm, a length of 152 mm, a step diameter of 100 mm, and a step depth of 25 mm; the diameter of the hoisting hole is 50 mm; the Z-shaped structure is mainly made of 70 mm*50 mm square tube; when the iron plate with the hoisting hole is in a vertical position, the middle part of the Z-shaped structure and the iron plate of the hoisting hole have an angle of 125°, and the middle part of the Z-shaped structure and the other side have an angle of 123°, and the axis of the hollow tube is 2° below the horizontal direction; the inner diameter of the positioning sleeve is 45 mm, the outer diameter is 57 mm, and the height is 102 mm; the spacer is 45 mm, the outer diameter is 56 mm, and the height is 3 mm; the nut is M42; the bearing model is 6309.

[0043] In order to ensure the tensile strength of the clamp arm, a reinforcing rib plate is provided at the inflection point of the Z-shaped structure close to the upper opening of the copper crucible. After welding, the reinforcing rib plate should leave a certain safety distance from the upper edge of the copper crucible. In this embodiment, the vertical distance between the reinforcing rib and the upper edge of the crucible is 3.5 mm.

[0044] The connection between the double-bearing clamp arm and the single-bearing clamp arm is assembled by an axle pin. The two sides of the connection of the double-bearing clamp arm are welded with iron plates with stepped circular holes. The two iron plates are used as structural parts to connect the upper and lower parts of the clamp arm. When assembling, the bearings are assembled at the circular holes with larger diameters on the inner sides of the two iron plates. The connection of the single-bearing clamp arm is a round tube with multiple stepped holes. When installing, the bearing is assembled in the innermost part and then the bearing gland and positioning sleeve are installed. When the two clamp arms are connected, it is necessary to ensure that the arc-shaped plates of the copper crucible clamping part are in relative directions; when connecting, the axle pin is passed through the double-bearing clamp arm bearing, the positioning sleeve, the single-bearing clamp arm, and the double-bearing clamp arm bearing in sequence, and after passing through, the positioning pin is installed in the circular hole at the end of the axle pin for positioning. In this embodiment, the diameter of the axle pin head is 60mm, the thickness is 10mm, the diameter of the shaft part is 30mm, the length is 118mm, and there is a pin hole with a diameter of 8mm 10mm away from the end. The outer diameter of the stepped circular hole is 64mm, the depth is 3mm, the middle diameter is 72mm, the depth is 19mm, and there is a 2mm deep groove on the outside, the groove width is 112mm. The single bearing fixture arm is a round tube with multiple stepped holes at the connection. The outer diameter of the round tube is 100mm, the first step hole inside has a diameter of 31mm and a depth of 15mm, the second step hole has a diameter of 72mm and a depth of 27mm, and the third step hole has a diameter of 84mm and a depth of 8mm. The bearing model is 6306; the diameter of the middle through hole of the bearing gland is 64mm, the outside is stepped, the large circle diameter is 84mm, the small circle diameter is 72mm, and the thickness is 8mm. The inner diameter of the positioning sleeve is 30mm, the outer diameter is 38mm, and the height is 18mm.

[0045] Sufficient space should be left after welding the iron plates on both sides of the connection of the dual-bearing clamp arm to ensure that the distance between the arc-shaped plates of the two copper crucible clamping parts is less than or equal to the copper crucible clamping surface when the two arms are clamped after transfer, and is larger than the diameter of the upper flange of the copper crucible when loosened. In this embodiment, the dual-bearing clamp arm is an iron plate with stepped circular holes on both sides of the connection, the iron plate is 220mm long and the main body is 100mm wide, occupying 40mm on both sides when welded.

[0046] The hoisting circular holes provided on the upper parts of the double-bearing clamp arm and the single-bearing clamp arm should be welded in such a way as to ensure that the hoisting circular holes on the two arms are in parallel vertical directions during hoisting.

[0047] The working principle of the copper crucible flipping clamp of this embodiment is as follows: when working, use a sling to pass through the hoisting circular holes on the two clamp arms, hang the copper crucible flipping clamp on the crane hook, operate the crane to move to the copper crucible, manually separate the lower ends of the two clamp arms, and place the two copper crucible clamping parts 2 on both sides of the copper crucible 1, lift the crane, and the two clamp arms will automatically clamp. After lifting the crane, manually push the copper crucible upward to complete the flipping and alloy ingot demolding work.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A copper crucible turning fixture, characterized in that: The copper crucible clamping part (2) comprises a copper crucible clamping part (2), a nut (3), a double-bearing clamping arm (4), a single-bearing clamping arm (5) and an axle pin (6); the middle parts of the double-bearing clamping arm (4) and the single-bearing clamping arm (5) are rotatably connected via the axle pin (6); the copper crucible clamping part (2) is in two parts, which are respectively mounted on the lower ends of the double-bearing clamping arm (4) and the single-bearing clamping arm (5), and are positioned via the nut (3); The copper crucible clamping part (2) comprises an arc plate (21), a short shaft (22) and a support plate (23); the arc plate (21) is a conical arc surface matched with the outer wall of the copper crucible (1), and has a circular hole in the center; the support plate (23) is welded above the large diameter of the arc plate (21), and the upper end of the support plate (23) can contact the lower edge of the upper flange of the copper crucible (1) during hoisting; one end of the short shaft (22) is provided with a thread, and the other end is welded in the central circular hole of the arc plate.

2. The copper crucible turning fixture according to claim 1, characterized in that: The main body of the copper crucible (1) to be turned over is an inverted truncated cone, with an upper flange provided on the upper edge, and the inner diameter of the upper opening of the copper crucible (1) is larger than the inner diameter of the bottom.

3. The copper crucible turning fixture according to claim 1, characterized in that: The central angle of the conical arc surface is 60-120°.

4. The copper crucible turning fixture according to claim 1, characterized in that: When the copper crucible clamping part (2) lifts the copper crucible (1), the angle at which the axis of the short axis (22) deflects downward is the same as the angle between the copper crucible generatrix and the axis, and both side end surfaces of the two arc-shaped plates (21) are respectively located on the same horizontal line.

5. The copper crucible turning fixture according to claim 1, characterized in that: The main bodies of the double-bearing clamp arm (4) and the single-bearing clamp arm (5) are Z-shaped structures.

6. The copper crucible turning fixture according to claim 1, characterized in that: The lower ends of the dual-bearing clamp arm (4) and the single-bearing clamp arm (5) are provided with hollow tubes with stepped holes for mounting the copper crucible clamping part (2), and the upper ends are provided with hoisting circular holes.

7. The copper crucible turning fixture according to claim 6, characterized in that: A positioning sleeve is arranged in the middle of the hollow tube with the stepped hole during assembly, and bearings are assembled in the stepped holes on both sides of the hollow tube with the stepped hole.

8. The copper crucible turning fixture according to claim 1, characterized in that: The dual-bearing clamp arm (4) and the single-bearing clamp arm (5) are provided with reinforcing rib plates at the inflection points close to the upper opening of the copper crucible (1).

9. The copper crucible turning fixture according to claim 1, characterized in that: The connection between the double-bearing clamp arm (4) and the shaft pin (6) is formed by welding two iron plates with stepped circular holes relative to each other; the connection between the single-bearing clamp arm (5) and the shaft pin (6) is formed by a round tube with multiple stepped holes.

10. The copper crucible turning fixture according to claim 1, characterized in that: After welding, the two iron plates at the connection of the double-bearing clamp arm (4) should have sufficient space to ensure that the distance between the arc-shaped plates (21) of the two copper crucible clamping parts (2) is less than or equal to the clamping surface of the copper crucible (1) when the two arms are coupled and clamped, and is greater than the diameter of the upper flange of the copper crucible (1) when the two arms are loosened.

Images