A vertical hanging tool for heat treatment of an inner step hole cylinder

Abstract

The utility model relates to a kind of vertical hanging tool of heat treatment of inner step hole cylinder, including hanging rod, hang cap installed on the small head end of hanging rod, the low support of auxiliary rod insertion, the high support of auxiliary rod insertion cooperatively installed hanging rod;Plugboard hole is opened in the small head end of hanging rod, and hanging rod is connected with hang cap by plugboard in plugboard hole;4 U-shaped notches are opened in the big head end of hanging rod according to cross symmetry direction, and 4 square pad irons are welded in the upper end surface of the big head end of hanging rod according to cross symmetry direction in the position between every adjacent two U-shaped notches;Low support of auxiliary rod insertion is welded and is composed of square low cushion block and circular arc step block, high support of auxiliary rod insertion is welded and is composed of square high cushion block and circular arc step block, and inner step hole cylinder product heat treatment process material cost can be reduced.

Description

Technical Field

[0001] This utility model belongs to the field of heat treatment process equipment technology, and specifically relates to a vertical hanging fixture for heat treatment of internal stepped hole cylinder products that reduces the material cost of heat treatment process. Background Technology

[0002] Currently, in the production of a type of internally stepped bore cylindrical product in a pit-type heat treatment furnace, the original heat treatment process design involved extending the process material by 410mm on the large-hole end of the product, and simultaneously drilling lifting holes in the process material to achieve vertical hanging for heat treatment. Figure 1 As shown, the 410mm length of the process material includes: a 210mm diameter lifting hole and a 200mm length of the upper load-bearing part of the lifting hole. The calculated weight of the process material reaches 1 ton, resulting in significant material waste. To reduce the production cost of heat treatment for the cylinder product, an improved design of the vertical lifting fixture is required. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a vertical hanging fixture for the heat treatment of internal stepped hole cylinder products that reduces the material cost of the heat treatment process.

[0004] The purpose of this utility model is achieved as follows: a vertical hanging fixture for heat treatment of an inner stepped bore cylinder, including a hanging rod, a hanging cap made of a ring and a U-shaped round steel welded together and installed on the small end of the hanging rod, a low support for the hanging rod and a high support for the hanging rod.

[0005] A plate hole is provided at the small end of the hanging rod, and the hanging rod is connected to the hanging cap through the plate inserted into the plate hole; four U-shaped notches are provided at the large end of the hanging rod in a cross-symmetrical direction, and four square pads are welded in a cross-symmetrical direction at the middle position of every two adjacent U-shaped notches on the upper surface of the large end of the hanging rod.

[0006] The low support bracket for the through-pole is composed of a square low pad and an arc-shaped step stop, with an arc radius of 400mm; the high support bracket for the through-pole is composed of a square high pad and an arc-shaped step stop, with an arc radius of 480mm.

[0007] During operation, first place the lower and higher auxiliary supports for the through-pole on the ground. The arc-shaped step on the lower auxiliary support should be opposite to the arc-shaped step on the higher auxiliary support, and their centerlines should be parallel. The distance between the arc-shaped steps of the lower and higher auxiliary supports is the length of the inner stepped hole cylinder product. Use an overhead crane and wire rope to lift the suspension rod horizontally. Align the small end of the suspension rod with the center of the large hole end of the inner stepped hole cylinder product and slowly push it into the inner hole. Continuously adjust the position of the wire rope until 2 / 3 of the length of the large end of the suspension rod is pushed into the inner hole. Remove the wire rope, and then use an overhead crane and wire rope to lift the inner stepped hole cylinder product horizontally again. Finally, place the small hole end of the inner stepped hole cylinder product... On the low support of the through-rod, the large-hole end of the inner stepped hole cylinder product is placed on the high support of the through-rod. During placement, the height difference between the two ends of the inner stepped hole cylinder causes the hanging rod pushed in from the large-hole end of the inner stepped hole cylinder product to slide down to the small-hole end of the inner stepped hole cylinder product, allowing the small end of the hanging rod to smoothly pass through the small-hole end of the inner stepped hole cylinder product. Then, the inner stepped hole cylinder product is lifted and laid flat using an overhead crane and wire rope. The small end of the hanging rod is then passed through the annular hole of the hanging cap. The hanging cap is fixed by inserting a plate into the plate hole. The hanging cap is then hung on the hanging cap using the overhead crane hook to erect the inner stepped hole cylinder product. The inner stepped hole cylinder product is fixed to the hanging rod by using the four square pads on the upper part of the large end of the hanging rod to lock at the diameter change of the inner stepped hole cylinder product's large and small holes, thus achieving vertical suspension.

[0008] The structural design of four U-shaped notches and four square pads is to ensure that the quenching medium inside the cylinder can flow freely during quenching and cooling, thus ensuring the quenching and cooling effect.

[0009] The insertion plate hole is located 180mm from the end face at the small end of the hanging rod, with a length of 170mm and a width of 40mm.

[0010] The suspender cap is composed of a ring with an outer diameter of 400mm, an inner diameter of 170mm, and a thickness of 150mm, welded together with a U-shaped round steel with a diameter of 90mm. The insert plate has a length of 400mm, a width of 150mm, and a thickness of 35mm.

[0011] Compared with the prior art, the advantages of this utility model are:

[0012] By employing a specialized tooling design for vertically suspending internally stepped bore cylinders, the need for extending the main body of the internally stepped bore cylinder by 410mm at the large bore end is eliminated, along with the elimination of drilling holes in the main body. This results in a ton reduction in the production weight after heat treatment, significantly reducing material costs and waste. Simultaneously, fewer machining steps are implemented, effectively improving production efficiency and shortening the processing cycle. Furthermore, the structural design of four U-shaped notches and four square pads at the large end of the suspension rod allows for free flow of the quenching medium within the inner bore of the cylinder during quenching and cooling, ensuring effective quenching and cooling. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the original tooling assembly structure.

[0014] Figure 2 This is a schematic diagram of the tooling assembly structure of this utility model.

[0015] Figure 3 This is a front view of the hanging rod structure of this utility model.

[0016] Figure 4 This is a top view of the hanging rod structure of this utility model.

[0017] Figure 5 This is a schematic diagram illustrating the use of the pole-assisted low and high brackets of this utility model.

[0018] Figure 6 This is a front view of the rod-assisted low support structure of this utility model.

[0019] Figure 7 This is a left view of the rod-assisted low support structure of this utility model.

[0020] Figure 8 This is a front view of the pole-assisted high support structure of this utility model.

[0021] Figure 9 This is a left view of the pole-assisted high support structure of this utility model.

[0022] Figure 10 This is a front view of the cap structure of this utility model.

[0023] Figure 11 This is a left view of the cap structure of this utility model.

[0024] The following are labeled in the diagram: 1. Inner stepped cylindrical product; 2. Hanging rod; 3. Insert plate hole; 4. U-shaped notch; 5. Square pad; 6. Through rod auxiliary low support; 7. Through rod auxiliary high support; 8. Hanging cap; 9. Insert plate; 10. Lifting hole; 11. Upper load-bearing part of the lifting hole. Detailed Implementation

[0025] Example 1: A vertical hanging fixture for heat treatment of an internal stepped bore cylinder includes a hanging rod 2, a hanging cap 8 consisting of a ring and U-shaped round steel welded together and installed on the small end of the hanging rod 2, a low auxiliary support 6 for mounting the hanging rod 2, and a high auxiliary support 7 for mounting the hanging rod. An insertion plate hole 3 is provided at the small end of the hanging rod 2, and the hanging rod 2 is connected to the hanging cap 8 through an insertion plate 9 inserted into the insertion plate hole 3. Four U-shaped notches 4 are provided at the large end of the hanging rod 2 in a cross-symmetrical direction. Four square pads 5 are welded in a cross-symmetrical direction between every two adjacent U-shaped notches 4 on the upper surface of the large end of the hanging rod 2.

[0026] The low support bracket 6 for the through-pole is composed of a square low pad and an arc-shaped step stop, with an arc radius of 400mm; the high support bracket 7 for the through-pole is composed of a square high pad and an arc-shaped step stop, with an arc radius of 480mm.

[0027] Specifically: The small end of the hanging rod 2 has a 170mm long * 40mm wide insertion hole 3 at a position 180mm from the end face. The hanging cap 8 is composed of a ring with an outer diameter of 400mm * inner diameter of 170mm * thickness of 150mm welded to a U-shaped round steel with a diameter of 90mm. The hanging rod 2 and the hanging cap 8 are connected by an insertion plate 9 with a length of 400mm * width of 150mm * thickness of 35mm. The large end of the hanging rod 2 has four U-shaped notches 4 arranged in a cross-symmetrical direction. Four square pads 5 are welded in a cross-symmetrical direction between every two adjacent U-shaped notches 4 on the upper surface of the large end of the hanging rod 2. The structural design of the four U-shaped notches 4 and the four square pads 5 is to allow the quenching medium inside the cylinder to flow freely during quenching and cooling, ensuring the quenching and cooling effect. The low support bracket 6 for the through-pole is composed of a square low pad and a circular arc step stop, with a circular arc radius of 400mm; the high support bracket 7 for the through-pole is composed of a square high pad and a circular arc step stop, with a circular arc radius of 480mm.

[0028] First, place the lower support bracket 6 and the upper support bracket 7 of the through-pole auxiliary bracket on the ground. The arc step on the lower support bracket 6 should be opposite to the arc step on the upper support bracket 7, and their center lines should be parallel. The distance between the arc steps of the lower support bracket 6 and the upper support bracket 7 is the length of the inner stepped hole cylinder product 1. Use a crane and wire rope to lift the hanging rod 2 horizontally. Align the small end of the hanging rod 2 with the center of the large hole end of the inner stepped hole cylinder product 1, and slowly push it into the inner hole of the inner stepped hole cylinder product 1. Then, by continuously adjusting the position of the wire rope, push 2 / 3 of the length of the large end of the hanging rod 2 into the inner hole of the inner stepped hole cylinder product 1. Remove the wire rope, and then use a crane and wire rope to lift the inner stepped hole cylinder product 1 horizontally again. Place the small hole end of the inner stepped hole cylinder product 1 on the lower support bracket 6, and the large hole end of the inner stepped hole cylinder product 1 on the upper support bracket 7. During placement, the height difference between the two ends of the inner stepped bore cylinder causes the hanging rod 2, pushed in from the large hole end of the inner stepped bore cylinder product 1, to slide down to the small hole end of the inner stepped bore cylinder product 1. This allows the small end of the hanging rod 2 to smoothly pass through the small hole end of the inner stepped bore cylinder product 1. Then, the inner stepped bore cylinder product 1 is lifted and laid flat using a crane and wire rope. The small end of the hanging rod 2 is then passed through the annular hole of the hanging cap 8. The hanging cap 8 is fixed by inserting the insert plate 9 into the insert plate hole 3. The inner stepped bore cylinder product 1 is then erected by hanging the hanging cap 8 with the crane hook. The inner stepped bore cylinder product 1 is fixed to the hanging rod by using the four square pads 5 at the upper part of the large end of the hanging rod 2 to lock at the diameter change of the inner stepped bore cylinder product 1. This achieves vertical hanging. At the same time, the structural design of the four U-shaped notches 4 and the four square pads 5 allows the quenching medium inside the inner bore of the cylinder to flow freely during quenching and cooling, ensuring the quenching and cooling effect.

[0029] By employing a specialized tooling design for vertically suspending internally stepped bore cylinders, the need for extending the main body of the internally stepped bore cylinder by 410mm at the large bore end is eliminated, along with the elimination of drilling holes in the main body. This results in a ton reduction in the production weight after heat treatment, significantly reducing material costs and waste. Simultaneously, fewer machining steps are implemented, effectively improving production efficiency and shortening the processing cycle. Furthermore, the structural design of four U-shaped notches and four square pads at the large end of the suspension rod allows for free flow of the quenching medium within the inner bore of the cylinder during quenching and cooling, ensuring effective quenching and cooling.

Claims

1. A vertical hanging fixture for heat treatment of an inner stepped bore cylinder, comprising a hanging rod (2), a hanging cap (8) consisting of a ring and a U-shaped round steel welded together and installed on the small end of the hanging rod (2), a low support bracket (6) for mounting the hanging rod (2), and a high support bracket (7) for mounting the hanging rod (2), characterized in that: A plate hole (3) is provided at the small end of the hanging rod (2). The hanging rod (2) is connected to the hanging cap (8) through the plate (9) inserted into the plate hole (3). Four U-shaped notches (4) are provided at the large end of the hanging rod (2) in a cross-symmetrical direction. Four square pads (5) are welded in a cross-symmetrical direction at the middle position of every two adjacent U-shaped notches (4) on the upper surface of the large end of the hanging rod (2). The low support bracket (6) for the through rod is composed of a square low pad and a circular arc step block welded together, and the radius of the arc is 400mm; the high support bracket (7) for the through rod is composed of a square high pad and a circular arc step block welded together, and the radius of the arc is 480mm.

2. The heat treatment vertical hanging fixture for an internally stepped bore cylinder according to claim 1, characterized in that: During operation, first place the lower support (6) and the upper support (7) of the rod-through auxiliary on the ground. The arc step on the lower support (6) should be opposite to the arc step on the upper support (7) and the center lines should be parallel. The distance between the arc step of the lower support (6) and the arc step of the upper support (7) is the length of the inner stepped hole cylinder product (1). Use a crane and wire rope to lift the hanging rod (2) horizontally. Align the small end of the hanging rod (2) with the center of the large hole end of the inner stepped hole cylinder product (1) and slowly push it into the inner hole of the inner stepped hole cylinder product (1). Then, by continuously adjusting the position of the wire rope, push 2 / 3 of the length of the large end of the hanging rod (2) into the inner hole of the inner stepped hole cylinder product (1). Remove the wire rope, and after lifting the inner stepped hole cylinder product (1) horizontally with a crane and wire rope, place the small hole end of the inner stepped hole cylinder product (1) on the lower support (6). On the support (6), the large end of the inner stepped hole cylinder product (1) is placed on the auxiliary support (7) for the through rod. During the placement process, the height difference between the two ends of the inner stepped hole cylinder causes the hanging rod (2) pushed in from the large end of the inner stepped hole cylinder product (1) to slide down to the small end of the inner stepped hole cylinder product (1), so that the small end of the hanging rod (2) can smoothly pass through the small end of the inner stepped hole cylinder product (1). Then, the inner stepped hole cylinder product (1) is lifted by a crane and a wire rope. Lift it flat, pass the small end of the hanging rod (2) through the circular hole of the hanging cap (8), insert the insert plate (9) into the insert plate hole (3) to fix the hanging cap (8), and then use the crane hook to hang the hanging cap (8) to erect the inner stepped hole cylinder product (1). Use the four square pads (5) on the upper part of the large end of the hanging rod (2) to lock the inner stepped hole cylinder product (1) at the diameter change of the large and small holes, and fix the inner stepped hole cylinder product on the hanging rod to achieve vertical hanging.

3. The vertical hanging fixture for heat treatment of an internally stepped bore cylinder according to claim 1, characterized in that... The feature is that the structural design of the four U-shaped notches (4) and the four square pads (5) is to ensure that the quenching medium in the inner hole of the cylinder can flow freely during quenching and cooling, so as to ensure the quenching and cooling effect.

4. The heat treatment vertical hanging fixture for an internally stepped bore cylinder according to claim 1, characterized in that... The feature is that the insertion plate hole (3) is opened at a position 180mm away from the end face of the small end of the hanging rod (2), with a length of 170mm and a width of 40mm.

5. The heat treatment vertical hanging fixture for an internally stepped bore cylinder according to claim 1, characterized in that... The feature is that the suspender cap (8) is composed of a ring with an outer diameter of 400mm, an inner diameter of 170mm, and a thickness of 150mm, welded with a U-shaped round steel with a diameter of 90mm, and the insert plate (9) has a length of 400mm, a width of 150mm, and a thickness of 35mm.

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