Lifting tool for long shaft of pit type heat treatment furnace

Abstract

The utility model relates to a pit type heat treatment furnace long shaft lifting tool which comprises a first clamping arm, a second clamping arm, a buckling module and a self-locking module, the first clamping arm and the second clamping arm are rotationally connected through a lock pin to form a scissor type opening and closing structure, and the upper end of the first clamping arm is detachably connected with the upper end of the second clamping arm through the buckling module. The lower end of the first clamping arm is detachably connected with the lower end of the second clamping arm through a self-locking module, a first clamping cavity is formed in the bottom of the first clamping arm, a second clamping cavity is formed in the bottom of the second clamping arm, and the first clamping cavity and the second clamping cavity are oppositely arranged and are in butt joint to form a containing cavity when the first clamping arm and the second clamping arm are closed. The containing cavity is matched with a tool plate welded to the end of the long shaft piece. The long shaft clamping device has the advantages that when the long shaft is clamped, the long shaft does not need to be additionally reserved in length and perforated, material waste is reduced, clamping operation is simple, and the long shaft clamping device is suitable for long shafts with different diameters.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of heat treatment auxiliary equipment, and specifically relates to a long shaft lifting appliance tool of shaft type heat treatment furnace. BACKGROUND

[0002] Heat treatment refers to a metal heating process that changes the chemical composition and organization of the surface or interior of a workpiece through heating, holding and cooling under the action of solid state. In the heat treatment process, the workpiece needs to be suspended in the heating furnace by using a lifting appliance. When long shaft workpieces are heat treated, the deformation amount of the workpiece is small, so the workpieces such as thin lifting rods and rotors that have high coaxiality requirements are preferentially selected for shaft type furnaces during heat treatment.

[0003] The prior art with the publication number CN216662216U discloses a suspension tool of a shaft type heat treatment furnace, which comprises a first lifting appliance and at least two second lifting appliances. The top of the first lifting appliance is connected to the top of the inner cylinder of the shaft type heat treatment furnace, and the bottom of the first lifting appliance is provided with at least two fixing structures. The at least two second lifting appliances are respectively connected to the at least two fixing structures, and the two sides of the second lifting appliance are provided with hangers. The top of the workpiece to be treated is arranged between the two hangers and fixedly connected to the two hangers. Although the suspension tool effectively improves the work efficiency of single heat treatment of the shaft type heat treatment furnace and reduces energy consumption, the clamping process is relatively difficult, a certain length allowance needs to be reserved on the workpiece body, and a lifting hole needs to be processed in the reserved length part. After the heat treatment is completed, the reserved part is cut off, which causes great waste of workpiece materials, and the design of the lifting hole not only increases the workload but also is difficult to fix the workpiece body, thereby prolonging the overall heat treatment period. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the defects of the prior art and provides a long shaft lifting appliance tool of a shaft type heat treatment furnace. The long shaft workpiece does not need to be additionally reserved in length and holed before clamping, material waste is reduced and the heat treatment processing period is shortened, clamping operation is simple and suitable for long shaft workpieces of different diameters.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme.

[0006] The utility model provides a kind of well type heat treatment furnace long axis lifting appliance frock, including first clamping arm, second clamping arm, buckle module, self-locking module, first clamping arm and second clamping arm are connected by locking pin rotation and are formed into scissor type open-close structure, first clamping arm upper end is detachably connected with the upper end of second clamping arm by buckle module, first clamping arm lower end is detachably connected with the lower end of second clamping arm by self-locking module, first clamping arm bottom is equipped with first clamping cavity, second clamping arm bottom is equipped with second clamping cavity, first clamping cavity and second clamping cavity are oppositely arranged, first clamping cavity and second clamping cavity are docked to form containing cavity when first clamping arm and second clamping arm are closed, containing cavity is adapted with frock plate welded with the end of long shaft piece.

[0007] Further, the first clamping arm includes a first arm body, and the second clamping arm includes a second arm body, and the middle part of the first arm body and the middle part of the second arm body are rotationally connected by the locking pin.

[0008] Further, the bottom of the first arm body is fixed with a first clamping body, the bottom of the second arm body is fixed with a second clamping body, the first clamping cavity is arranged on the first clamping body, and the second clamping cavity is arranged on the second clamping body.

[0009] Further, the buckle module includes a first frame plate, a second frame plate and a buckle plate, the first frame plate is fixedly sleeved on the first arm body, the second frame plate is fixedly sleeved on the second arm body, the opposite side of the first frame plate and the second frame plate is provided with a rectangular through groove, the buckle plate is rotationally connected with the first frame plate through a rotating shaft in the rectangular through groove of the first frame plate, and the other end of the buckle plate is provided with a protruding block matched with the rectangular through groove of the second frame plate.

[0010] Further, the self-locking module includes a sliding buckle, a sliding block and a spring, the first arm body is provided with a Chinese character-shaped through hole along the length direction of the locking pin, the sliding buckle is slidably arranged in the Chinese character-shaped through hole, the second arm body is provided with a rectangular blind hole opposite to the Chinese character-shaped through hole, the sliding block is slidably arranged in the rectangular blind hole, the spring is arranged in the rectangular blind hole and the two ends of the spring are respectively abutted with the sliding block and the bottom of the rectangular blind hole, the sliding block is abutted with the first clamping arm when the first clamping arm and the second clamping arm are unfolded, and the sliding block is inserted into the Chinese character-shaped through hole and is abutted with the sliding buckle when the first clamping arm and the second clamping arm are closed.

[0011] Further, the opposite side of the lower end of the first arm body and the second arm body is fixed with a limiting block matched with the second arm body.

[0012] Further, the top of the first arm body and the top of the second arm body are provided with lifting lugs, and the lifting lugs are provided with ear holes.

[0013] Further, the opposite side of the top of the first arm body and the top of the second arm body is provided with a hand hole.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model discloses a first clamping arm, second clamping arm, lock module, self locking module, first clamping cavity, second clamping cavity's setting, when clamping long shaft piece, can weld the tooling plate in advance at long shaft piece end, after unfolding first clamping arm and second clamping arm, place tooling plate in first clamping cavity and second clamping cavity, then close first clamping arm and second clamping arm, and tooling plate is clamped in the containing cavity, when first clamping arm and second clamping arm close, self locking module will automatically lock and fix first clamping arm lower end and second clamping arm lower end, then through lock module first clamping arm upper end and second clamping arm upper end lock fixed, finally long shaft piece is hung on the lifting tool tool, and the whole clamping process is simple and easy to operate, after clamping is completed, the lifting tool tool together with long shaft piece is placed in the shaft furnace and is treated to long shaft piece, after heat treatment is completed, through self locking module and lock module first clamping arm and second clamping arm are unlocked, then unfold first clamping arm and second clamping arm, and long shaft piece is taken down and cuts off tooling plate, and completes heat treatment processing.

[0016] 2. The utility model discloses through welding the tooling plate of containing cavity adaptation at the end of long shaft piece of different diameters, and then through the cooperation of tooling plate and lifting tool tool, the lifting tool tool is suitable for clamping long shaft piece of different diameters, and long shaft piece does not need to reserve length and open hole before clamping, and then material waste can be reduced and the processing period is shortened. ACCURACY OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the shaft heat treatment furnace long shaft lifting tool of the utility model;

[0018] Figure 2 It is the structure schematic diagram of first clamping arm in the utility model;

[0019] Figure 3 It is the structure schematic diagram of second clamping arm in the utility model;

[0020] Figure 4 It is the structure schematic diagram of self locking module in the utility model;

[0021] Figure 5 It is the structure schematic diagram of lock module in the utility model;

[0022] Figure 6 It is the structure schematic diagram of long shaft piece in the utility model;

[0023] Figure 7 It is the clamping schematic diagram of long shaft piece in the utility model;

[0024] Figure 8 It is the assembly schematic diagram of shaft heat treatment furnace long shaft lifting tool and shaft furnace in the utility model.

[0025] In the figure: 1, the first clamping arm; 11, the first arm body; 12, the buckle plate; 13, the first lock pin hole; 14, the middle-shaped through hole; 15, the first clamping body; 151, the first clamping cavity; 16, the limiting block; 17, the first frame plate; 18, the hand hole; 19, the lifting lug; 191, the ear hole; 2, the second clamping arm; 21, the second arm body; 22, the second frame plate; 23, the second lock pin hole; 24, the rectangular blind hole; 25, the second clamping body; 251, the second clamping cavity; 26, the rectangular through slot; 3, the lock pin; 4, the self-locking module; 41, the sliding buckle; 42, the sliding block; 43, the spring; 5, the long shaft piece; 51, the tool plate; 6, the shaft furnace. DETAILED DESCRIPTION

[0026] The utility model will be further described below in combination with the drawings, but the protection scope of the utility model is not limited to the following.

[0027] As Figures 1-3 shown, a long shaft hoist tool of shaft heat treatment furnace, including first clamping arm 1, second clamping arm 2, buckle locking module, self-locking module 4, first clamping arm 1 and second clamping arm 2 are connected through the lock pin 3 and are connected to form the scissors type open-close structure, the first clamping arm 1 upper end is detachably connected with the second clamping arm 2 upper end through the buckle locking module, the first clamping arm 1 lower end is detachably connected with the second clamping arm 2 lower end through the self-locking module 4, the first clamping arm 1 bottom is equipped with the first clamping cavity 151, the second clamping arm 2 bottom is equipped with the second clamping cavity 251, the first clamping cavity 151 and the second clamping cavity 251 are oppositely arranged, the first clamping cavity 151 and the second clamping cavity 251 are docked to form the containing cavity when the first clamping arm 1 and the second clamping arm 2 are closed, and the containing cavity is adapted with the tool plate 51 welded at the end of the long shaft piece 5.

[0028] As Figures 6-8 shown, when clamping the long shaft piece 5, the tool plate 51 is welded at the end of the long shaft piece 5 in advance, the first clamping arm 1 and the second clamping arm 2 are rotated, the first clamping arm 1 and the second clamping arm 2 are unfolded, then the tool plate 51 is placed in the first clamping cavity 151 and the second clamping cavity 251, then the first clamping arm 1 and the second clamping arm 2 are rotated, the first clamping arm 1 and the second clamping arm 2 are closed and folded, the tool plate 51 is clamped in the containing cavity, when the first clamping arm 1 and the second clamping arm 2 are closed, the self-locking module 4 will automatically lock and fix the lower end of the first clamping arm 1 and the lower end of the second clamping arm 2, then the upper end of the first clamping arm 1 and the upper end of the second clamping arm 2 are locked and fixed through the buckle locking module, finally the long shaft piece 5 is hung on the hoist tool, then the hoist tool together with the long shaft piece 5 can be placed in the shaft furnace 6 to heat treat the long shaft piece 5, after heat treatment, the first clamping arm 1 and the second clamping arm 2 are unlocked through the self-locking module 4 and the buckle locking module, then the first clamping arm 1 and the second clamping arm 2 are rotated and unfolded, the long shaft piece 5 is taken down and the tool plate 51 is cut off, and the processing is completed.

[0029] For different diameters of the long shaft 5, the tool plate 51 matched with the accommodating cavity can be welded at the end of the long shaft 5, and then through the cooperation of the tool plate 51 and the lifting tool, the lifting tool is suitable for clamping the long shaft 5 with different diameters. After the heat treatment is completed, the tool plate 51 is cut off, so that the long shaft 5 does not need to be additionally reserved in length and holed before clamping, thereby reducing material waste and shortening the processing cycle.

[0030] As shown in Figure 2 , Figure 3 , the first clamping arm 1 comprises a first arm body 11, and the second clamping arm 2 comprises a second arm body 21. The first arm body 11 and the second arm body 21 are rotationally connected through a lock pin 3. The first arm body 11 is provided with a first lock pin hole 13 matched with the lock pin 3 at the middle part, and the second arm body 21 is provided with a second lock pin hole 23 matched with the lock pin 3 at the middle part. The first clamping arm 1 is fixed with a first clamping body 15 at the bottom, and the second clamping arm 2 is fixed with a second clamping body 25 at the bottom. A first clamping cavity 151 is arranged on the first clamping body 15, and a second clamping cavity 251 is arranged on the second clamping body 25.

[0031] As shown in Figure 1 , Figure 5 , the buckle module comprises a first frame plate 17, a second frame plate 22 and a buckle plate 12. The first frame plate 17 is fixedly sleeved on the first arm body 11, and the second frame plate 22 is fixedly sleeved on the second arm body 21. The first frame plate 17 and the second frame plate 22 are both provided with a rectangular through slot 26 on the side opposite to each other. The buckle plate 12 is rotationally connected with the first frame plate 17 through a rotating shaft in the rectangular through slot 26 on the first frame plate 17 at one end, and is provided with a protruding block matched with the rectangular through slot 26 on the second frame plate 22 at the other end. After the first clamping arm 1 and the second clamping arm 2 are rotated and closed, the protruding block is matched with the rectangular through slot 26 on the second frame plate 22 by rotating the buckle plate 12, so as to lock and fix the upper end of the first clamping arm 1 and the upper end of the second clamping arm 2. The protruding block is separated from the rectangular through slot 26 on the second frame plate 22 by rotating the buckle plate 12, so as to unlock the upper end of the first clamping arm 1 and the upper end of the second clamping arm 2.

[0032] As shown in Figure 1 , Figure 4As shown, the self-locking module 4 includes a sliding buckle 41, a sliding block 42, and a spring 43. A middle-shaped through hole 14 is arranged on the first arm body 11 along the length direction of the locking pin 3, the sliding buckle 41 is slidingly arranged in the middle-shaped through hole 14, a rectangular blind hole 24 opposite to the middle-shaped through hole 14 is arranged on the second arm body 21, the sliding block 42 is slidingly arranged in the rectangular blind hole 24, and the spring 43 is arranged in the rectangular blind hole 24 and the two ends of the spring 43 respectively abut against the sliding block 42 and the bottom of the rectangular blind hole 24. When the first clamping arm 1 and the second clamping arm 2 are unfolded, the first arm body 11 abuts against the sliding block 42, the sliding block 42 is retracted in the rectangular blind hole 24, and the spring 43 is in a compressed state. When the first clamping arm 1 and the second clamping arm 2 are rotated and closed to the rectangular blind hole 24 and the middle-shaped through hole 14 are connected, the spring 43 is elongated and pushes the sliding block 42 to slide out of the rectangular blind hole 24, so that the sliding block 42 is inserted into the middle-shaped through hole 14 and abuts against the sliding buckle 41, thereby locking and fixing the lower ends of the first clamping arm 1 and the second clamping arm 2, so that the first clamping arm 1 and the second clamping arm 2 cannot be rotated and unfolded. When the first clamping arm 1 and the second clamping arm 2 need to be unfolded, the sliding buckle 41 is pressed to push the sliding block 42 to slide into the rectangular blind hole 24, and the first clamping arm 1 and the second clamping arm 2 can be rotated after the sliding block 42 is separated from the middle-shaped through hole 14.

[0033] As shown in Figure 1 , Figure 2 , the lower end of the first arm body 11 opposite to the second arm body 21 is fixed with a limiting block 16 abutting against the second arm body 21. When the first clamping arm 1 and the second clamping arm 2 are unfolded to abut against the limiting block 16, the first clamping arm 1 and the second clamping arm 2 cannot be continuously rotated, so that the sliding block 42 always abuts against the first clamping arm 1, thereby preventing the sliding block 42 from being separated from the rectangular blind hole 24 due to an excessively large unfolding angle.

[0034] As shown in Figures 1-3 , the top of the first arm body 11 and the top of the second arm body 21 are both fixed with an ear 19, and an ear hole 191 is arranged on the ear 19, so that the lifting tool can be lifted. The top of the first arm body 11 and the top of the second arm body 21 are both provided with a hand hole 18, so that the first clamping arm 1 and the second clamping arm 2 can be manually held.

[0035] The long shaft lifting tool of the shaft type heat treatment furnace can clamp long shaft pieces 5 with different diameters, the clamping operation is simple, and the long shaft piece 5 does not need to be pre-arranged with a length and a hole before clamping, so that the material is saved and the heat treatment processing period is shortened.

[0036] Finally, although the above description has shown and described the embodiments of the present application, it is understood to those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A long shaft lifting fixture for a pit-type heat treatment furnace, characterized in that: It includes a first clamping arm (1), a second clamping arm (2), a locking module, and a self-locking module (4). The first clamping arm (1) and the second clamping arm (2) are rotatably connected by a locking pin (3) to form a scissor-type opening and closing structure. The upper end of the first clamping arm (1) is detachably connected to the upper end of the second clamping arm (2) through the locking module. The lower end of the first clamping arm (1) is detachably connected to the lower end of the second clamping arm (2) through the self-locking module (4). The bottom of the first clamping arm (1) is provided with a first clamping cavity (151), and the bottom of the second clamping arm (2) is provided with a second clamping cavity (251). The first clamping cavity (151) and the second clamping cavity (251) are arranged opposite to each other. When the first clamping arm (1) and the second clamping arm (2) are closed, the first clamping cavity (151) and the second clamping cavity (251) are connected to form a receiving cavity. The receiving cavity is adapted to the tooling plate (51) welded to the end of the long shaft (5).

2. The long shaft lifting fixture for a pit-type heat treatment furnace according to claim 1, characterized in that: The first clamping arm (1) includes a first arm body (11), and the second clamping arm (2) includes a second arm body (21). The middle part of the first arm body (11) and the middle part of the second arm body (21) are rotatably connected by a locking pin (3).

3. The long shaft lifting fixture for a pit-type heat treatment furnace according to claim 2, characterized in that: The bottom of the first arm body (11) is fixed with a first clamping body (15), and the bottom of the second arm body (21) is fixed with a second clamping body (25). The first clamping cavity (151) is located on the first clamping body (15), and the second clamping cavity (251) is located on the second clamping body (25).

4. The long shaft lifting fixture for a pit-type heat treatment furnace according to claim 2, characterized in that: The locking module includes a first frame plate (17), a second frame plate (22), and a buckle plate (12). The first frame plate (17) is fixedly sleeved on the first arm body (11), and the second frame plate (22) is fixedly sleeved on the second arm body (21). The first frame plate (17) and the second frame plate (22) are provided with rectangular through slots (26) on opposite sides. One end of the buckle plate (12) is rotatably connected to the first frame plate (17) through a pivot in the rectangular through slot (26) on the first frame plate (17). The other end of the buckle plate (12) is provided with a protrusion that engages with the rectangular through slot (26) on the second frame plate (22).

5. The long shaft lifting fixture for a pit-type heat treatment furnace according to claim 2, characterized in that: The self-locking module (4) includes a sliding buckle (41), a slider (42), and a spring (43). The first arm (11) has a Chinese character-shaped through hole (14) along the length of the locking pin (3). The sliding buckle (41) is slidably disposed in the Chinese character-shaped through hole (14). The second arm (21) has a rectangular blind hole (24) opposite to the Chinese character-shaped through hole (14). The slider (42) is slidably disposed in the rectangular blind hole (24). The spring (43) is disposed in the rectangular blind hole (24) and the two ends of the spring (43) abut against the bottom of the slider (42) and the rectangular blind hole (24) respectively. When the first clamping arm (1) and the second clamping arm (2) are unfolded, the slider (42) abuts against the first clamping arm (1). When the first clamping arm (1) and the second clamping arm (2) are closed, the slider (42) is inserted into the Chinese character-shaped through hole (14) and abuts against the sliding buckle (41).

6. The long shaft lifting fixture for a pit-type heat treatment furnace according to claim 3, characterized in that: A limiting block (16) is fixed on the side of the lower end of the first arm body (11) opposite to the second arm body (21) to engage with the second arm body (21).

7. The long shaft lifting fixture for a pit-type heat treatment furnace according to claim 2, characterized in that: The top of the first arm (11) and the top of the second arm (21) are both provided with lugs (19), and the lugs (19) are provided with ear holes (191).

8. The long shaft lifting fixture for a pit-type heat treatment furnace according to claim 2, characterized in that: Hand-held holes (18) are provided on the top of the first arm (11) and the opposite side of the top of the second arm (21).

Images