Ultra-deep well type nitriding furnace cover guide structure

Abstract

The utility model provides an ultra-deep well type nitriding furnace cover guiding structure which comprises a guiding column, the end portion of a furnace cover is arranged on the outer side of the guiding column in a sleeved mode, the top end of the guiding column is connected with a transition piece, the top end of the transition piece is arranged in a circular truncated cone shape, and the cross section area of the top end of the transition piece is smaller than that of the bottom end of the transition piece. According to the utility model, the guide columns play a role in guiding the ascending and descending of the furnace cover, so that the problem that the furnace cover is easy to shake when being lifted is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of nitriding furnaces, and particularly relates to a guide structure for an ultra-deep well type nitriding furnace cover. Background Art

[0002] Nitriding furnace is a device with nitriding treatment, which has the characteristics of low treatment temperature, short treatment time, small deformation of workpiece, high fatigue limit and good wear resistance; soft nitriding is essentially low-temperature nitrocarburizing with nitriding as the main method. When nitrogen atoms of steel penetrate into the steel, a small amount of carbon atoms also penetrate into the steel. Compared with general gas nitriding, the treatment result is that the hardness of the infiltrated layer is lower than that of nitriding and the brittleness is smaller, so it is called soft nitriding.

[0003] However, the furnace cover of the nitriding furnace is generally transported by lifting. The method of lifting with ropes is prone to instability. The furnace cover suspended in the air after being lifted by ropes is prone to shaking, which poses a risk. Utility Model Content

[0004] The utility model provides an ultra-deep well type nitriding furnace cover guide structure, which solves the above problem.

[0005] The technical solution of the utility model is implemented as follows: an ultra-deep well nitriding furnace cover guide structure includes a guide column, the end of the furnace cover is sleeved on the outside of the guide column, the top end of the guide column is connected to a transition piece, the top end of the transition piece is truncated cone-shaped, and the cross-sectional area of ​​the top end of the transition piece is smaller than the cross-sectional area of ​​the bottom end of the transition piece.

[0006] The utility model guides the rise and fall of the furnace cover through the guide column, thereby solving the problem that the furnace cover is prone to shaking when it is lifted.

[0007] As a preferred embodiment, the transition piece includes a first transition connection portion, a second transition connection portion and a third transition connection portion which are integrally connected;

[0008] The first transition connection portion is arranged in a truncated cone shape, and the cross-sectional area of ​​the top end of the first transition connection portion is smaller than the cross-sectional area of ​​the bottom end of the first transition connection portion;

[0009] The second transition connection part is arranged at the bottom of the first transition connection part, the second transition connection part is arranged in a columnar shape, the cross-sectional area of ​​the second transition connection part is equal to the cross-sectional area of ​​the bottom end of the first filter connection part, and the bottom end of the second transition connection part is arranged with a chamfer;

[0010] The third transition connection portion is arranged at the bottom end of the second transition connection portion, the third transition connection portion is arranged in a columnar shape, the cross-sectional area of ​​the third transition connection portion is smaller than the cross-sectional area of ​​the second transition connection portion, and the bottom end of the third transition connection portion is arranged with a chamfer.

[0011] The utility model arranges the transition piece so that when the furnace cover is lowered from the top of the guide column, the transition piece can be more easily matched with the furnace cover so that the transition piece passes through the through opening.

[0012] As a preferred embodiment, the guide column includes an outer tube and an inner tube, the second transition connection portion is clamped on the top of the outer tube, and the third transition connection portion is clamped on the top of the inner tube.

[0013] As a preferred embodiment, a base is connected to the bottom of the guide column, the base is rectangular, and the guide column is arranged in the middle of the base.

[0014] As a preferred embodiment, the furnace cover and the guide column are connected by a connecting piece, a through hole which passes through from top to bottom is arranged in the middle of the connecting piece, and the guide column passes through the through hole.

[0015] As a preferred embodiment, the connecting member includes a first fixed connecting portion, a second fixed connecting portion and a third fixed connecting portion which are integrally connected;

[0016] The first fixed connection portion is fixedly connected to the furnace cover;

[0017] The second fixed connection part is vertically arranged between the first fixed connection part, and the longitudinal cross-sectional area of ​​the second fixed connection part close to the end of the first fixed connection part is larger than the longitudinal cross-sectional area of ​​the second fixed connection part away from the end of the first fixed connection part;

[0018] The third fixed connection part is arranged at the end of the second fixed connection part, the thickness of the third fixed connection part is greater than the thickness of the second fixed connection part, and the through hole is arranged to penetrate the third fixed connection part.

[0019] The furnace cover of the utility model is matched with the guide column through the connecting piece.

[0020] As a preferred embodiment, the passage space of the passage opening is smaller at the top and larger at the bottom.

[0021] The utility model is provided with a through-port shape, so that a connecting piece can be placed at the transition piece, and the furnace cover is limited when it is raised, lowered or rotated to prevent shaking.

[0022] After adopting the above technical solution, the beneficial effects of the utility model are:

[0023] The utility model guides the rise and fall of the furnace cover through the guide column, thereby solving the problem that the furnace cover is prone to shaking when it is lifted. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 is a structural schematic diagram of a transition piece;

[0027] Figure 3 It is a top view of the utility model.

[0028] In the figure, 1-guide column; 2-furnace cover; 3-transition piece; 4-connecting piece; 5-base; 10-outer cylinder; 11-inner cylinder; 30-first transition connection part; 31-second transition connection part; 32-third transition connection part; 40-first fixed connection part; 41-second fixed connection part; 42-third fixed connection part; 43-through port. DETAILED DESCRIPTION

[0029] 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 of 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.

[0030] according to Figures 1 to 3 As shown, an ultra-deep well type nitriding furnace cover guide structure includes a guide column 1, and the guide column 1 includes an outer cylinder 10 and an inner cylinder 11.

[0031] A transition piece 3 is connected to the top end of the guide column 1. The transition piece 3 includes a first transition connection portion 30, a second transition connection portion 31 and a third transition connection portion 32 which are integrally connected.

[0032] The first transition connection portion 30 is configured in a truncated cone shape, and the cross-sectional area of ​​the top end of the first transition connection portion 30 is smaller than the cross-sectional area of ​​the bottom end of the first transition connection portion 30;

[0033] The second transition connection part 31 is arranged at the bottom of the first transition connection part 30, and the second transition connection part 31 is arranged in a columnar shape, and the cross-sectional area of ​​the second transition connection part 31 is equal to the cross-sectional area of ​​the bottom end of the first filter connection part, and the bottom end of the second transition connection part 31 is arranged with a chamfer;

[0034] The third transition connection portion 32 is disposed at the bottom end of the second transition connection portion 31 . The third transition connection portion 32 is disposed in a columnar shape. The cross-sectional area of ​​the third transition connection portion 32 is smaller than the cross-sectional area of ​​the second transition connection portion 31 . The bottom end of the third transition connection portion 32 is chamfered.

[0035] The second transition connection part 31 is clamped on the top of the outer tube 10, and the third transition connection part 32 is clamped on the top of the inner tube 11. The utility model sets the transition piece 3, so that when the furnace cover 2 is lowered from the top of the guide column 1, the transition piece 3 can be more easily matched with the furnace cover 2, so that the transition piece 3 passes through the through opening 43. The bottom of the guide column 1 is connected with a base 5, which is rectangular, and the guide column 1 is set in the middle of the base 5.

[0036] The furnace cover 2 and the guide column 1 are connected by a connecting member 4, and a through hole 43 is provided in the middle of the connecting member 4, and the guide column 1 passes through the through hole 43. The connecting member 4 includes a first fixed connecting portion 40, a second fixed connecting portion 41 and a third fixed connecting portion 42 which are integrally connected;

[0037] The first fixed connection portion 40 is fixedly connected to the furnace cover 2;

[0038] The second fixed connection part 41 is vertically arranged between the first fixed connection part 40, and the longitudinal cross-sectional area of ​​the end of the second fixed connection part 41 close to the first fixed connection part 40 is larger than the longitudinal cross-sectional area of ​​the end of the second fixed connection part 41 away from the first fixed connection part 40;

[0039] The third fixed connection portion 42 is disposed at an end of the second fixed connection portion 41 . The thickness of the third fixed connection portion 42 is greater than that of the second fixed connection portion 41 . The through hole 43 penetrates the third fixed connection portion 42 .

[0040] The furnace cover 2 of the utility model is matched with the guide column 1 through the connecting piece 4. The through space of the through opening 43 is set to be small at the top and large at the bottom. The shape of the through opening 43 of the utility model can be placed in the transition piece 3 to limit the furnace cover 2 when it rises, falls or rotates to prevent shaking.

[0041] In the description of the present utility model, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. 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. An ultra-deep well nitriding furnace cover guide structure, characterized in that: It comprises a guide column, the end of the furnace cover is sleeved on the outer side of the guide column, the top end of the guide column is connected with a transition piece, the top end of the transition piece is truncated cone-shaped, and the cross-sectional area of ​​the top end of the transition piece is smaller than the cross-sectional area of ​​the bottom end of the transition piece.

2. The ultra-deep well type nitriding furnace cover guide structure according to claim 1 is characterized in that: The transition piece includes a first transition connection portion, a second transition connection portion and a third transition connection portion which are integrally connected; The first transition connection portion is arranged in a truncated cone shape, and the cross-sectional area of ​​the top end of the first transition connection portion is smaller than the cross-sectional area of ​​the bottom end of the first transition connection portion; The second transition connection part is arranged at the bottom of the first transition connection part, the second transition connection part is arranged in a columnar shape, the cross-sectional area of ​​the second transition connection part is equal to the cross-sectional area of ​​the bottom end of the first filter connection part, and the bottom end of the second transition connection part is arranged with a chamfer; The third transition connection part is arranged at the bottom end of the second transition connection part, the third transition connection part is arranged in a columnar shape, the cross-sectional area of ​​the third transition connection part is smaller than the cross-sectional area of ​​the second transition connection part, and the bottom end of the third transition connection part is arranged with a chamfer.

3. The ultra-deep well type nitriding furnace cover guide structure according to claim 2 is characterized in that: The guide column comprises an outer tube and an inner tube, the second transition connection portion is clamped on the top of the outer tube, and the third transition connection portion is clamped on the top of the inner tube.

4. The ultra-deep well type nitriding furnace cover guide structure according to claim 3 is characterized in that: The bottom of the guide column is connected with a base, the base is arranged in a rectangular shape, and the guide column is arranged in the middle of the base.

5. The ultra-deep well type nitriding furnace cover guide structure according to claim 4 is characterized in that: The furnace cover and the guide column are connected by a connecting piece, a through hole which passes through from top to bottom is arranged in the middle of the connecting piece, and the guide column passes through the through hole.

6. The ultra-deep well type nitriding furnace cover guide structure according to claim 5, characterized in that: The connecting member comprises a first fixed connecting portion, a second fixed connecting portion and a third fixed connecting portion which are integrally connected; The first fixed connection portion is fixedly connected to the furnace cover; The second fixed connection part is vertically arranged between the first fixed connection part, and the longitudinal cross-sectional area of ​​the second fixed connection part close to the end of the first fixed connection part is larger than the longitudinal cross-sectional area of ​​the second fixed connection part away from the end of the first fixed connection part; The third fixed connection part is arranged at the end of the second fixed connection part, the thickness of the third fixed connection part is greater than the thickness of the second fixed connection part, and the through hole is arranged to penetrate the third fixed connection part.

7. The ultra-deep well type nitriding furnace cover guide structure according to claim 6, characterized in that: The passage space of the passage opening is arranged to be small at the top and large at the bottom.

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