Detachable heat treatment clamp for pit furnace

Abstract

The utility model relates to the field of pit furnace heat treatment clamps, and discloses a pit furnace detachable heat treatment clamp which comprises a pit furnace body, a supporting column is rotationally arranged in the pit furnace body, and a detachable containing frame assembly used for containing a casting and a detachable clamp assembly used for clamping and fixing the casting are arranged on the supporting column; according to the pit type furnace, the detachable containing frame assembly used for containing the casting and the detachable clamp assembly used for clamping and fixing the casting are arranged on the supporting columns in the pit type furnace body, a fixing ring in the detachable clamp assembly is fixed to the containing frame assembly, and a first half hoop and a second half hoop are fixed through a first fastening bolt; and when the castings of different types or specifications need to be replaced, the placing frame assembly and the detachable clamp assembly can be disassembled and combined, heat treatment can be conducted on the castings of multiple specifications or types at the same time, and the production efficiency of a multi-variety and small-batch production mode can be improved.

Description

Technical Field

[0001] The present application relates to the field of heat treatment fixtures for pit-type furnaces, and in particular to detachable heat treatment fixtures for pit-type furnaces. Background Art

[0002] Heat treatment of forging blanks is a crucial step in the metallurgical and mechanical manufacturing process. The purpose is to change or improve the internal structure of forgings to obtain the required mechanical, physical and chemical properties. A large part of forging blanks are cylindrical or rod-shaped. This is mainly because cylindrical and rod-shaped structures are widely used in mechanical equipment, automotive parts, building structures and various engineering applications, such as shafts, rods, pipes, beams and columns.

[0003] The deep well structure design of the pit furnace is particularly suitable for the heat treatment of shafts, rods and tubular castings. Therefore, the pit furnace is often used for heat treatment of shafts, rods and tubular castings.

[0004] When the existing pit-type furnace performs heat treatment on castings, castings of uniform specifications or models are placed on the placement rack in sequence, and after the castings are clamped and fixed by the heat treatment fixture, the placement rack is hoisted into the furnace of the pit-type furnace by special lifting equipment for heat treatment. The frame of the existing placement rack is generally fixed, and the heat treatment fixture on the placement rack is also relatively fixed on the placement rack. When it is necessary to replace castings of different types or specifications, it may be necessary to wait for the same type of workpieces to accumulate to a certain number before batch processing. This will have an adverse effect on the production efficiency of the multi-variety, small-batch production model. In order to solve the above problems, a detachable heat treatment fixture for a pit-type furnace is proposed.

[0005] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In order to solve the problem of heat treatment fixtures for pit-type furnaces, the present application provides a detachable heat treatment fixture for pit-type furnaces.

[0007] The detachable heat treatment fixture of the pit furnace provided in this application adopts the following technical solution:

[0008] A detachable heat treatment fixture for a pit-type furnace comprises a pit-type furnace body, a support column is rotatably arranged in the pit-type furnace body, and a detachable placement frame assembly for placing castings and a detachable fixture assembly for clamping and fixing the castings are arranged on the support column;

[0009] The detachable clamp assembly includes half hoop 1, half hoop 2, fastening bolt 1, fixing ring, and limiting column. Half hoop 1 and half hoop 2 are fixed by fastening bolt 1, the fixing ring is fixed on the placement frame assembly, and limiting columns are circumferentially arranged on the fixing ring. Half hoop 1 and half hoop 2 are also fixedly connected to the fixing ring.

[0010] Preferably, the placement rack assembly includes multiple placement racks, placement grooves, clamping blocks, and clamping grooves, the clamping blocks and clamping grooves are respectively arranged on both sides of the placement rack, the placement grooves are opened on the placement rack, the multiple placement racks are circumferentially arranged on the outside of the support column and the multiple placement racks are interlocked, and the fixing ring is fixed in the placement groove.

[0011] Preferably, the placement rack is further provided with a second fastening bolt, and a fixing groove is provided on the support column corresponding to the second fastening bolt, and the second fastening bolt is threadedly connected to the fixing groove.

[0012] Preferably, a rotating shaft is fixedly provided at the bottom of the support column, and the rotating shaft rotates at the bottom of the pit-type furnace body.

[0013] Preferably, a motor is fixedly arranged at the bottom of the pit-type furnace body, and the output end of the motor is fixedly connected to the rotating shaft.

[0014] Preferably, a support frame is fixedly arranged on the support column.

[0015] Preferably, a cleaning brush is fixed to the bottom of the support frame, and auxiliary wheels are circumferentially arranged on the support frame.

[0016] In summary, compared with the related art, the utility model has the following beneficial effects:

[0017] A detachable placement rack assembly for placing castings and a detachable clamp assembly for clamping and fixing the castings are provided on the supporting columns in the shaft-type furnace body; a fixing ring in the detachable clamp assembly is fixed on the placement rack assembly; a half clamp one and a half clamp two are fixed by a pair of tightening bolts, thereby clamping and fixing the castings; when castings of different types or specifications need to be replaced, the placement rack assembly and the detachable clamp assembly can be disassembled and combined; castings of multiple specifications or types can be heat treated at the same time; compared with related technologies, heat treatment of castings of multiple specifications or types at the same time is beneficial to improving the production efficiency of a multi-variety, small-batch production model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the application;

[0019] Figure 2 is a schematic diagram of a side cross-sectional structure of an embodiment of the application;

[0020] Figure 3 It is an exploded schematic diagram of the internal structure of a pit-type furnace according to an embodiment of the application;

[0021] Figure 4 It is an exploded schematic diagram of the clamp assembly of the embodiment of the application.

[0022] Explanation of the reference numerals: 1. shaft furnace body; 2. support column; 3. placement rack; 4. placement slot; 5. lifting ring; 6. detachable clamp assembly; 61. half clamp one; 62. half clamp two; 63. fastening bolt one; 64. fixing ring; 65. limiting column; 7. fixing slot; 8. fastening bolt two; 9. clamping block; 10. clamping slot; 11. support rack; 12. cleaning brush; 13. auxiliary wheel; 14. rotating shaft; 15. motor. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-4 This application is described in further detail.

[0024] The present application embodiment discloses a detachable heat treatment fixture for a pit furnace. Figure 1-4 , a detachable heat treatment fixture for a pit-type furnace, comprising a pit-type furnace body 1, a support column 2 rotatably arranged in the pit-type furnace body 1, a detachable placement frame assembly for placing castings and a detachable fixture assembly 6 for clamping and fixing the castings are arranged on the support column 2;

[0025] The detachable clamp assembly 6 includes a half hoop 1 61, a half hoop 2 62, a fastening bolt 1 63, a fixing ring 64, and a limiting column 65. The half hoop 1 61 and the half hoop 2 62 are fixed by the fastening bolt 1 63. The fixing ring 64 is fixed on the placement frame assembly. The limiting column 65 is circumferentially arranged on the fixing ring 64. The half hoop 1 61 and the half hoop 2 62 are also fixedly connected to the fixing ring 64.

[0026] It should be noted that the pit furnace body 1 adopts the RJ-90-9 pit furnace;

[0027] It should be further explained that the bottom of the half hoop 1 61 and the half hoop 2 62 is provided with a limiting groove corresponding to the limiting column 65, and the limiting column 65 is arranged in the limiting groove to realize the fixation of the half hoop 1 61 and the half hoop 2 62 with the fixing ring 64, and the support column 2 is provided with a lifting ring 5 for lifting;

[0028] By adopting the above technical solution, the fixing ring 64 can be fixed to the placement rack assembly by means of threads, and the half clamp 1 61 and the half clamp 2 62 are threadedly fixed by means of the fastening bolt 1 63 to clamp the casting. When castings of different types or specifications need to be replaced, the placement rack assembly and the detachable clamp assembly 6 can be disassembled and assembled, and castings of multiple specifications or types can be heat treated at the same time.

[0029] Reference Figure 2-3The placement rack assembly includes a plurality of placement racks 3, placement slots 4, a clamping block 9, and a clamping slot 10. The clamping block 9 and the clamping slot 10 are respectively arranged on both sides of the placement rack 3. The placement slot 4 is opened on the placement rack 3. The plurality of placement racks 3 are circumferentially arranged outside the support column 2 and the plurality of placement racks 3 are interlocked with each other. The fixing ring 64 is fixed in the placement slot 4.

[0030] It should be noted that the fixing ring 64 is threadedly fixed in the placement groove 4, and the multiple placement racks 3 are interlocked through the engagement of the clamping block 9 and the clamping groove 10;

[0031] By adopting the above technical solution, the engagement of the clamping block 9 and the clamping slot 10 can make the splicing and assembly of the placement rack 3 more stable, play a certain supporting role, and facilitate the disassembly of the placement rack 3.

[0032] Reference Figure 2-3 , the placement frame 3 is also provided with a second fastening bolt 8, and the support column 2 is provided with a fixing groove 7 corresponding to the second fastening bolt 8, and the second fastening bolt 8 is threadedly connected to the fixing groove 7;

[0033] It should be noted that the second fastening bolt 8 is threadedly fixed to the placement rack 3, and a through hole corresponding to the second fastening bolt 8 is opened on the placement rack 3;

[0034] By adopting the above technical solution, the placement rack 3 is fixed on the support column 2 by fastening bolts 8.

[0035] Reference Figure 2 A rotating shaft 14 is fixedly arranged at the bottom of the support column 2, and the rotating shaft 14 rotates at the bottom of the pit-type furnace body 1;

[0036] By adopting the above technical solution, the rotating shaft 14 facilitates the support column 2 to rotate in the shaft furnace body 1.

[0037] Reference Figure 2 A motor 15 is fixedly arranged at the bottom of the pit furnace body 1, and the output end of the motor 15 is fixedly connected to the rotating shaft 14;

[0038] It will be understood by those skilled in the art that the output end of the motor 15 is the end of the rotor thereon;

[0039] By adopting the above technical solution, the motor 15 is used to drive the rotating shaft 14 to rotate in the pit furnace body 1.

[0040] Reference Figure 2-3 , a support frame 11 is fixedly arranged on the support column 2;

[0041] It should be noted that the support frame 11 is located at the outer bottom of the support column 2;

[0042] By adopting the above technical solution, the support frame 11 plays a supporting role in the placement or rotation of the support column 2 in the pit-type furnace body 1.

[0043] Reference Figure 2-3 A cleaning brush 12 is fixed to the bottom of the support frame 11, and auxiliary wheels 13 are arranged circumferentially on the support frame 11;

[0044] It should be noted that a through opening is opened on the circumferential direction of the support frame 11, and the auxiliary wheel 13 is rotatably arranged in the through opening opened on the circumferential direction of the support frame 11, and the ground of the cleaning brush 12 is in contact with the inner ground of the pit-type furnace body 1;

[0045] By adopting the above technical solution, the cleaning brush 12 can clean the bottom of the pit-type furnace body 1, which can prevent the waste slag generated during heat treatment from accumulating at the bottom of the pit-type furnace body 1, and facilitate the subsequent cleaning of the waste slag. The auxiliary wheel 13 can reduce the rotation resistance of the support frame 11.

[0046] The implementation principle of the detachable heat treatment fixture of the pit furnace in the embodiment of the present application is as follows: before heat treatment of the casting, the placement frame 3 is fixed on the support column 2 by the fastening bolt 2 8, and the fixing ring 64 is fixed in the placement groove 4, and the half hoop 1 61 and the half hoop 2 62 are fixed on the fixing ring 64 in turn, and the casting is placed between the half hoop 1 61 and the half hoop 2 62, and the half hoop 1 61 and the half hoop 2 62 are fastened and fixed by the fastening bolt 1 63, so as to clamp and fix the casting, and the casting is fixed by passing through the lifting ring 5 through the special lifting equipment. The casting is hoisted into the furnace of the pit-type furnace body 1, and the pit-type furnace body 1 is started to start heat treatment. At the same time, the motor 15 is driven to drive the support frame 11 and the support column 2 to rotate together, so that the casting can be heated more evenly and the effect of heat treatment is improved. When it is necessary to replace castings of different types or specifications, the fastening bolts 8 can be removed to replace the corresponding placement frame 3. At the same time, the half clamp 1 61 and the half clamp 2 62 on the fixing ring 64 can be replaced and reassembled, so that castings of multiple specifications or types can be heat treated at the same time.

[0047] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0048] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0049] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A detachable heat treatment fixture for a pit-type furnace, comprising a pit-type furnace body (1), characterized in that: A support column (2) is rotatably arranged in the shaft furnace body (1), and a detachable placement frame assembly for placing castings and a detachable clamp assembly (6) for clamping and fixing the castings are provided on the support column (2); The detachable clamp assembly (6) comprises a half clamp (61), a half clamp (62), a fastening bolt (63), a fixing ring (64), and a limiting column (65); the half clamp (61) and the half clamp (62) are fixed by the fastening bolt (63); the fixing ring (64) is fixed on the placement frame assembly; the limiting column (65) is circumferentially arranged on the fixing ring (64); and the half clamp (61) and the half clamp (62) are also fixedly connected to the fixing ring (64).

2. The detachable heat treatment fixture for a pit furnace according to claim 1 is characterized in that: The placement rack assembly comprises a plurality of placement racks (3), placement slots (4), a clamping block (9), and a clamping slot (10); the clamping block (9) and the clamping slot (10) are respectively arranged on both sides of the placement rack (3); the placement slot (4) is opened on the placement rack (3); the plurality of placement racks (3) are circumferentially arranged outside the support column (2) and the plurality of placement racks (3) are interlocked; and the fixing ring (64) is fixed in the placement slot (4).

3. The detachable heat treatment fixture for a pit furnace according to claim 2 is characterized in that: The placement frame (3) is also provided with a second fastening bolt (8), and the support column (2) is provided with a fixing groove (7) corresponding to the second fastening bolt (8), and the second fastening bolt (8) is threadedly connected to the fixing groove (7).

4. The detachable heat treatment fixture for a pit furnace according to claim 1 is characterized in that: A rotating shaft (14) is fixedly arranged at the bottom of the support column (2), and the rotating shaft (14) rotates at the bottom of the pit-type furnace body (1).

5. The detachable heat treatment fixture for a pit furnace according to claim 4 is characterized in that: A motor (15) is fixedly arranged at the bottom of the pit-type furnace body (1), and an output end of the motor (15) is fixedly connected to the rotating shaft (14).

6. The detachable heat treatment fixture for a pit furnace according to claim 1, characterized in that: A support frame (11) is fixedly arranged on the support column (2).

7. The detachable heat treatment fixture for a pit furnace according to claim 6, characterized in that: A cleaning brush (12) is fixed to the bottom of the support frame (11), and auxiliary wheels (13) are circumferentially arranged on the support frame (11).

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