Linkage type heat treatment hoist
By designing a lifting ring with internal threads and partition blocks in heat treatment lifting, the problem of poor carburizing effect at the threads of the drill rod in the prior art is solved, and a more efficient and uniform carburizing effect is achieved, reducing production costs and improving safety.
Patent Information
- Application Number
- CN202421583241.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-05
AI Technical Summary
The threads of the existing heat-treated casing rings are not fully carburized, resulting in poor carburizing effect at the threads of the drill rod, which increases production costs and manpower and material consumption, and poses safety hazards.
A linked heat treatment lifting is adopted, including a lifting ring, and its inner wall is fixedly connected with bumps and partition blocks. The bumps are provided with internal threads on the outside, and the inner wall and the outer part of the lifting ring are provided with ventilation holes and through holes. Through the coordination of the internal threads and external threads, stable rotation of the drill rod and uniform circulation of carburized gas are achieved.
The circulation efficiency and uniformity of carburizing gas is improved, the carburizing effect at the threads of the drill rod is enhanced, the production cost is reduced, and the safety of the heat treatment process is improved.
Smart Images
Figure CN222948442U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat treatment, in particular to a link-type heat treatment hoisting. Background Art
[0002] During the heat treatment process of the drill rod, the drill rods (both ends are external threads) need to be hoisted in batches in the heat treatment furnace. One end of the external thread is screwed onto the heat treatment hanging plate, and the other end is vertically downward, screwed with a corresponding number of heat treatment casing rings, and then screwed with the same number of drill rods.
[0003] However, the threads of the existing heat-treated casing lifting ring are not fully carburized, resulting in no carburized layer on the threads. The carburizing effect of the drill rod threads after heat treatment is not good, and even fails to meet the working hardness requirements of the drill rod. For this, multiple heat treatments may be required to meet the carburizing requirements, but the heat treatment and labor costs increase, which consumes a lot of manpower and material resources in the factory during the processing, and there are some unsafe hidden dangers to the workers. For this reason, the technicians in this field have proposed a linked heat treatment hoist to solve the above problems. Utility Model Content
[0004] In order to make up for the above shortcomings, the utility model provides a link-type heat treatment lifting device, which aims to improve the problem that the threads of the existing heat treatment sleeve lifting ring are not fully carburized, resulting in no carburized layer on the threads, which leads to increased production costs.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a linked heat treatment hoisting, including a hoisting ring, the inner wall of the hoisting ring is fixedly connected with a protrusion, the outside of the protrusion is provided with an internal thread, the inner wall of the hoisting ring is provided with a plurality of ventilation holes, and the outside of the hoisting ring is provided with a plurality of through holes.
[0006] As a further description of the above technical solution:
[0007] A plurality of interlayer blocks are fixedly connected to the inner wall of the hanging ring.
[0008] As a further description of the above technical solution:
[0009] The outside of the protrusion is provided with an internal thread.
[0010] As a further description of the above technical solution:
[0011] The plurality of protrusions are symmetrically distributed.
[0012] As a further description of the above technical solution:
[0013] The plurality of vent holes are all arranged in an arc shape.
[0014] As a further description of the above technical solution:
[0015] The through holes are evenly distributed among the vent holes.
[0016] As a further description of the above technical solution:
[0017] The material of the hanging ring is stainless steel.
[0018] The utility model has the following beneficial effects:
[0019] 1. In the utility model, by rotating the drill rod, under the action of the internal thread, one end of the drill rod is screwed into one end of the lifting ring until the top of the drill rod contacts the interlayer block. At this time, under the cooperation of the internal thread and the external thread of the drill rod, one end of the other drill rod is screwed into the other end of the lifting ring, and then the top of the other drill rod contacts the surface of the interlayer block, thereby improving the circulation efficiency and uniformity of the carburizing gas, improving the carburizing effect at the thread of the drill rod, reducing production costs, and improving the safety of the heat treatment process. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A three-dimensional diagram of a linked heat treatment hoisting device proposed by the utility model;
[0021] Figure 2 This is a schematic diagram of a convex block structure for a linked heat treatment hoisting device proposed by the utility model;
[0022] Figure 3 The utility model provides a schematic diagram of the structure of a link-type heat treatment lifting interlayer block.
[0023] Legend:
[0024] 1. Lifting ring; 2. Through hole; 3. Internal thread; 4. Vent hole; 5. Interlayer block; 6. Bump. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] Reference Figure 1 , Figure 2 and Figure 3The utility model provides an embodiment: a linked heat treatment hoist, including a lifting ring 1, a protrusion 6 is fixedly connected to the inner wall of the lifting ring 1, an internal thread 3 is arranged on the outside of the protrusion 6, a plurality of vent holes 4 are opened on the inner wall of the lifting ring 1, and a plurality of through holes 2 are opened on the outside of the lifting ring 1.
[0027] Furthermore, by rotating the drill rod, one end of the drill rod is screwed into one end of the lifting ring 1 through the internal thread 3 until the top of the drill rod contacts the interlayer block 5. At this time, one end of the other drill rod is screwed into the other end of the lifting ring 1 through the internal thread 3, so that the top of the other drill rod contacts the surface of the interlayer block 5. The carburizing gas is heated and activated in the furnace, enters the interior of the lifting ring 1 through the through hole 2 of the lifting ring 1, and fully contacts the threaded part of the drill rod, so that the threaded part of the drill rod can achieve more uniform and sufficient carburization, reducing the number of repeated heat treatments required due to insufficient carburization. The function of the interlayer block 5 is to avoid direct contact between the threaded ends of the drill rods, ensuring that the threaded ends of each drill rod can be carburized independently without interfering with each other, thereby improving the uniformity and efficiency of carburizing.
[0028] Reference Figure 2 and Figure 3 A plurality of interlayer blocks 5 are fixedly connected to the inner wall of the lifting ring 1 .
[0029] Furthermore, the interlayer block 5 is used to isolate the threaded ends of the two drill rods screwed on the same lifting ring 1, thereby avoiding direct contact between the threaded ends of the two drill rods, reducing damage that may be caused by contact during the heat treatment process, and ensuring that the threaded end of each drill rod can be carburized independently without interfering with each other.
[0030] Reference Figure 1 , Figure 2 and Figure 3 The outside of the protrusion 6 is provided with an internal thread 3.
[0031] Furthermore, the lifting ring 1 cooperates with the external thread of the drill rod through the internal thread 3, ensuring that the drill rod can be stably screwed on the lifting ring 1 during the heat treatment process, thereby improving the connection stability between the drill rod and the lifting ring 1, and helping to maintain the correct position of the drill rod during the heat treatment process, and helping to more effectively transfer the carburizing gas to the threaded area during the heat treatment process.
[0032] Reference Figure 2 and Figure 3 , the plurality of protrusions 6 are symmetrically distributed.
[0033] Furthermore, the symmetrical distribution of the bumps 6 helps to maintain the balance and stability of the lifting ring 1 during the heat treatment process, ensures the uniformity of the lifting ring 1 when bearing the weight of the drill rod and the forces generated during the heat treatment process, reduces the risk of deformation or damage due to uneven force, and at the same time, helps to improve the manufacturing accuracy and assembly efficiency of the lifting ring 1.
[0034] Reference Figure 1 , Figure 2 and Figure 3 , the multiple ventilation holes 4 are all arranged in an arc shape.
[0035] Furthermore, the arc-shaped design smoothes the connection between the internal thread 3 and the main body of the lifting ring 1, reduces stress concentration points, helps reduce internal stress caused by temperature changes during heat treatment, thereby improving the durability and reliability of the lifting ring 1, and also helps the carburizing gas flow inside the lifting ring 1, further improving the carburizing effect.
[0036] Reference Figure 1 , Figure 2 and Figure 3 , the through holes 2 are evenly distributed between the vent holes 4.
[0037] Furthermore, the through hole 2 provides a passage for the carburizing gas to enter the interior of the lifting ring 1, so that the carburizing gas can contact the threaded portion of the drill rod more directly and fully, thereby improving the efficiency and quality of carburizing, and helping to evenly distribute the gas inside the lifting ring 1, further improving the carburizing effect.
[0038] Reference Figure 1 , Figure 2 and Figure 3 , the material of the lifting ring 1 is stainless steel.
[0039] Furthermore, the stainless steel material enables the lifting ring 1 to have excellent corrosion resistance and high temperature stability, and can resist oxidation, corrosion and chemical erosion.
[0040] Working principle: by rotating the drill rod, one end of the drill rod is screwed into one end of the suspension ring 1 through the internal thread 3 until the top of the drill rod contacts the interlayer block 5. At this time, one end of the other drill rod is screwed into the other end of the suspension ring 1 through the internal thread 3, so that the top of the other drill rod contacts the surface of the interlayer block 5. The carburizing gas enters the interior of the suspension ring 1 through the through hole 2 and carburizes the threaded part of the drill rod, thereby improving the circulation efficiency and uniformity of the carburizing gas and realizing efficient carburization of the threaded part of the drill rod. This not only improves the performance of the drill rod, but also improves the safety and economy of heat treatment.
[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A linked heat treatment hoist, comprising a hoist ring (1), characterized in that: The inner wall of the lifting ring (1) is fixedly connected with a protrusion (6), the outside of the protrusion (6) is provided with an internal thread (3), the inner wall of the lifting ring (1) is provided with a plurality of vent holes (4), and the outside of the lifting ring (1) is provided with a plurality of through holes (2).
2. A linked heat treatment hoist according to claim 1, characterized in that: A plurality of interlayer blocks (5) are fixedly connected to the inner wall of the lifting ring (1).
3. A linked heat treatment hoist according to claim 1, characterized in that: The plurality of protrusions (6) are symmetrically distributed.
4. A linked heat treatment hoist according to claim 1, characterized in that: The plurality of vent holes (4) are all arranged in an arc shape.
5. The linked heat treatment hoist according to claim 2, characterized in that: The through holes (2) are evenly distributed between the vent holes (4).
6. The linked heat treatment hoist according to claim 1, characterized in that: The material of the hanging ring (1) is stainless steel.