Lifting appliance for heat treatment of shaft forgings

Abstract

The utility model provides a lifting appliance for heat treatment of shaft forgings, and particularly relates to the field of heat treatment of shaft forgings. The lifting appliance comprises a lifting cap, a cross beam, a lifting rod, a first hanging plate and a second hanging plate, the two ends of the cross beam are provided with a first lifting lug and a second lifting lug respectively, one end of the lifting rod is detachably connected with the lifting cap, and the other end of the lifting rod is detachably connected with the cross beam; the first hanging plate is arranged on the first lifting lug in a sliding manner, and a first opening is formed in the first hanging plate; the second hanging plate and the first hanging plate are slidably arranged on the second lifting lug in parallel, and a second opening is formed in the second hanging plate; the distance between the first hanging plate and the second hanging plate is adjustable, so that the two axial ends of the flange are embedded into the first opening and the second opening correspondingly, and the flange is clamped between the first hanging plate and the second hanging plate. According to the lifting appliance for heat treatment of the shaft forge piece, a lifting chuck does not need to be additionally reserved at the shaft end of the hot shaft forge piece, and the quenching effect of the flange end of the shaft forge piece can be improved.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment of shaft forgings, and specifically to a lifting tool for heat treatment of shaft forgings. Background Technology

[0002] Large forgings are not only fundamental components of important industries, but also core components of some major equipment. They are widely used in wind power, petrochemicals, marine equipment, metallurgical machinery and equipment, and large shaft forgings play a vital role in industrial applications.

[0003] When heat treating large shaft forgings, conventional furnace loading methods typically include horizontal and vertical loading. For large shaft forgings with flanges at the ends and elongated U-shaped grooves on the shaft body, due to their special shape, the furnace heating and quenching cooling of the workpiece must be planned in advance during tempering heat treatment to ensure the quenching effect of the elongated U-shaped grooves on the shaft body, thereby meeting the mechanical properties of the workpiece. Conventional shaft forgings often adopt a vertical lifting heat treatment process along the axial direction of large shaft forgings. During the heat treatment process, additional lifting clamps are usually reserved at the shaft end. However, for the aforementioned shaft forgings, because of the flanges at the ends, reserving additional lifting clamps at the flange extension section not only increases the weight of the steel ingot, causing raw material and energy consumption, but also affects the quenching effect at the flange end. Utility Model Content

[0004] To achieve the above-mentioned objectives and other related objectives, and in view of the shortcomings of the prior art, this utility model provides a lifting tool for heat treatment of shaft forgings, so as to improve the heat treatment effect of shaft forgings with end flanges.

[0005] To achieve the above and other related objectives, this utility model provides a lifting device for heat treatment of shaft forgings. The shaft forging is equipped with a flange at its end. The lifting device includes a lifting cap, a crossbeam, a lifting rod, a first hanging plate, and a second hanging plate. The two ends of the shaft forging are respectively equipped with a first lifting lug and a second lifting lug. One end of the lifting rod is detachably connected to the lifting cap, and the other end is detachably connected to the crossbeam. The first hanging plate is slidably disposed on the first lifting lug and has a first opening. The second hanging plate is slidably disposed parallel to the first hanging plate on the second lifting lug and has a second opening. The distance between the first hanging plate and the second hanging plate is adjustable so that the two ends of the flange in the axial direction are respectively embedded in the first opening and the second opening, so that the flange is clamped between the first hanging plate and the second hanging plate.

[0006] In one example of this utility model, the lifting device further includes a pull rod, both ends of which are provided with stops. The pull rod passes through the first hanging plate and the second hanging plate in sequence. The stop at one end of the pull rod stops on the side of the first hanging plate away from the second hanging plate, and the stop at the other end of the pull rod stops on the side of the second hanging plate away from the first hanging plate.

[0007] In one example of this utility model, the hanging cap includes a hanging arm and a hanging plate. The hanging arm is fixedly connected to the hanging plate. The hanging plate is provided with a first through hole for the hanging rod to pass through. The crossbeam is provided with a second through hole for the hanging rod to pass through. The hanging rod passes through the second through hole and the first through hole in sequence. One end of the hanging rod is stopped at the top of the hanging plate by a limiting member, and the other end is stopped at the bottom of the crossbeam.

[0008] In one example of this utility model, the limiting member is a pin, and the end of the rod that passes through the first through hole is provided with a pin hole, and the pin is inserted into the pin hole.

[0009] In one example of this utility model, the hanging arm is an arched hanging arm.

[0010] In one example of this utility model, the suspension rod includes a first rod, a second rod, and a third rod connected in sequence. The first rod stops at the bottom of the crossbeam, the third rod extends out from the first through hole, the diameter of the first rod is larger than the diameter of the third rod, the second rod is tapered, the large end face of the second rod is fixedly connected to the first rod, and the small end face of the second rod is fixedly connected to the third rod.

[0011] In one example of this utility model, the first rod, the second rod, and the third rod are an integral structure.

[0012] In one example of this utility model, the hanging arm and the hanging plate are an integral structure.

[0013] The lifting device for heat treatment of shaft forgings provided by this utility model has a lifting cap and a crossbeam connected by a lifting rod. A first hanging plate is slidably mounted on a first lifting lug at one end of the crossbeam, and a second hanging plate is slidably mounted parallel to the first hanging plate on a second lifting lug at the other end of the crossbeam. The distance between the first and second hanging plates is adjustable to allow the two ends of the flange axially to be respectively inserted into the first and second openings, so that the flange is clamped between the first and second hanging plates. The lifting device for heat treatment of shaft forgings provided by this application can be used for vertical heat treatment of shaft forgings without the need for additional lifting clamps at the shaft end of the hot shaft forging. This not only reduces the weight of the steel ingot and the consumption of raw materials and energy, but also ensures the quenching effect of the shaft forging and reduces the deformation of the shaft forging during heat treatment. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram showing the fit between the lifting tool for heat treatment of the shaft forging of this utility model and the shaft forging in one embodiment;

[0016] Figure 2 This is a front view of one embodiment of the lifting tool for heat treatment of shaft forgings according to this utility model;

[0017] Figure 3 This is a top view of one embodiment of the lifting tool for heat treatment of shaft forgings according to the present invention;

[0018] Figure 4 This is a schematic diagram of a lifting tool for heat treatment of shaft forgings according to one embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram from another angle of one embodiment of the lifting tool for heat treatment of shaft forgings according to this utility model;

[0020] Figure 6 This is a schematic diagram of the tie rod in one embodiment of the lifting tool for heat treatment of shaft forgings according to this utility model.

[0021] Component designation explanation

[0022] 10. Shaft forging; 11. Flange; 100. Lifting cap; 110. Hanging arm; 120. Lifting plate; 121. First through hole; 200. Crossbeam; 210. First lifting lug; 211. First baffle; 220. Second lifting lug; 221. Second baffle; 230. Second through hole; 300. Lifting rod; 310. First rod; 320. Second rod; 330. Third rod; 400. First hanging plate; 410. First opening; 500. Second hanging plate; 510. Second opening; 600. Tie rod; 610. Stop block; 700. Limiting component. Detailed Implementation

[0023] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0024] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0025] Please see Figures 1 to 6 This utility model provides a lifting device for heat treatment of shaft forgings. The shaft forging 10 has a flange 11 at its end. The lifting device includes a lifting cap 100, a crossbeam 200, a lifting rod 300, a first hanging plate 400, and a second hanging plate 500. The lifting cap 100 and the crossbeam 200 are connected by the lifting rod 300. The first hanging plate 400 and the second hanging plate 500 are slidably disposed at both ends of the crossbeam 200. The distance between the first hanging plate 400 and the second hanging plate 500 is adjustable to clamp the flange 11 between the first hanging plate 400 and the second hanging plate 500. This lifting device for heat treatment of shaft forgings can be used for vertical heat treatment of shaft forgings 10 without requiring additional lifting clamps at the shaft end of the shaft forging 10. This not only reduces the weight of the steel ingot and decreases raw material and energy consumption but also ensures the quenching effect of the shaft forging 10 and reduces deformation during heat treatment.

[0026] Please see Figures 1 to 4 The lifting cap 100 provides a connection point for connecting a sling, chain, or hook to the shaft forging 10 to be lifted. In one embodiment, the lifting cap 100 includes a hanging arm 110 and a lifting plate 120, with the hanging arm 110 and the lifting plate 120 fixedly connected. Exemplarily, the hanging arm 110 and the lifting plate 120 are an integral structure, for example, formed integrally during forging. In this embodiment, the hanging arm 110 is an arched hanging arm. The arched design not only converts the vertically downward load force into a lateral force distributed along the arch, effectively dispersing the force and enhancing the load-bearing capacity and stability of the hanging arm 110, but also provides a larger contact area, reducing pressure on the connection point.

[0027] Please see Figures 2 to 5 In one embodiment, a first lifting lug 210 and a second lifting lug 220 are respectively provided at both ends of the crossbeam 200. A first hanging plate 400 is slidably disposed on the first lifting lug 210, and a first opening 410 is provided on the first hanging plate 400. A second hanging plate 500 is slidably disposed parallel to the second lifting lug 220, and a second opening 510 is provided on the second hanging plate 500. The distance between the first hanging plate 400 and the second hanging plate 500 is adjustable so that the two ends of the flange 11 in the axial direction are respectively embedded in the first opening 410 and the second opening 510, so that the flange 11 is clamped between the first hanging plate 400 and the second hanging plate 500. In this embodiment, a first baffle 211 is provided at the end of the first lifting lug 210 opposite to the second lifting lug 220 to prevent the first hanging plate 400 from falling off the first lifting lug 210; a second baffle 221 is provided at the end of the second lifting lug 220 opposite to the first lifting lug 210 to prevent the second hanging plate 500 from falling off the second lifting lug 220.

[0028] Please see Figures 4 to 6 In one embodiment, to prevent the first hanging plate 400 and the second hanging plate 500 from moving axially along the crossbeam 200 during lifting, thus avoiding the fall of the shaft forging 10, the lifting device also includes a tie rod 600. Both ends of the tie rod 600 are provided with stops 610. The tie rod 600 passes sequentially through the first hanging plate 400 and the second hanging plate 500. One end of the tie rod 600 is stopped by a stop 610 on the side of the first hanging plate 400 opposite to the second hanging plate 500, and the other end of the tie rod 600 is stopped by a stop 610 on the side of the second hanging plate 500 opposite to the first hanging plate 400. Furthermore, the opposite sides of the first hanging plate 400 and the second hanging plate 500 respectively fit against the sides of the crossbeam 200, enhancing the stability of the first hanging plate 400 and the second hanging plate 500, ensuring the stability of the shaft forging 10, and improving the quenching effect of the shaft forging 10.

[0029] Please see Figure 1 Figure 4 and Figure 5In one embodiment, one end of the boom 300 is detachably connected to the cap 100, and the other end of the boom 300 is detachably connected to the crossbeam 200. The hanging plate 120 has a first through hole 121 for the boom 300 to pass through, and the crossbeam 200 has a second through hole 230 for the boom 300 to pass through. The boom 300 passes through the second through hole 230 and the first through hole 121 in sequence. One end of the boom 300 is stopped at the top of the hanging plate 120 by a limiting member 700, and the other end of the boom 300 is stopped at the bottom of the crossbeam 200. For example, the end of the boom 300 passing through the first through hole 121 has a pin hole, and the limiting member 700 is a pin. The pin is inserted into the pin hole to achieve the detachable connection between the boom 300 and the cap 100. In this embodiment, the lifting rod 300 includes a first rod 310, a second rod 320, and a third rod 330 connected in sequence. The end of the first rod 310 facing away from the third rod 330 is stopped at the bottom of the crossbeam 200. The third rod 330 extends from the second through hole 230, and the end of the third rod 330 facing away from the first rod 310 extends from the first through hole 121. The diameter of the first rod 310 is larger than the diameter of the third rod 330. The second rod 320 is tapered, with its large end face fixedly connected to the first rod 310 and its small end face fixedly connected to the third rod 330. By setting the lifting rod 300 to the above shape, the strength requirements of the lifting device can be met, while the volume of the lifting cap 100 of the lifting rod 300 can be reduced, thus reducing the overall weight of the lifting device and facilitating operation. In this embodiment, the first rod 310, the second rod 320, and the third rod 330 are an integral structure.

[0030] When using the lifting device in this application, the lifting cap 100, crossbeam 200, lifting rod 300, first hanging plate 400 and second hanging plate 500 are first assembled. The shaft forging 10 to be processed is placed in the vertical material well. Then, the assembled tooling is lifted by the lifting device. The distance between the first hanging plate 400 and the second hanging plate 500 is adjusted. The axial ends of the flange 11 are respectively inserted into the first opening 410 and the second opening 510. The tie rod 600 is passed through the first hanging plate 400 and the second hanging plate 500 in sequence. The stops 610 at both ends of the tie rod 600 are respectively stopped on the outside of the first hanging plate 400 and the second hanging plate 500 on both sides to fix the first hanging plate 400 and the second hanging plate 500 and prevent the first hanging plate 400 and the second hanging plate 500 from moving along the axial direction of the crossbeam 200 during the lifting process, so as to ensure the stability of the shaft forging 10 during the lifting process.

[0031] The lifting device for heat treatment of shaft forgings provided by this utility model has a lifting cap and a crossbeam connected by a lifting rod. A first hanging plate is slidably mounted on a first lifting lug at one end of the crossbeam, and a second hanging plate is slidably mounted parallel to the first hanging plate on a second lifting lug at the other end of the crossbeam. The distance between the first and second hanging plates is adjustable so that the two ends of the flange along the axial direction are respectively inserted into the first and second openings, so that the flange is clamped between the first and second hanging plates. The lifting device for heat treatment of shaft forgings provided by this application can be used for vertical heat treatment of shaft forgings, and there is no need to reserve additional lifting clamps at the shaft end of the hot shaft forging. This not only reduces the weight of the steel ingot and reduces the consumption of raw materials and energy, but also ensures the quenching effect of the shaft forging and reduces the deformation of the shaft forging during heat treatment. Therefore, this utility model effectively overcomes some practical problems in the prior art and has high utilization value and significance.

[0032] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A lifting tool for heat treatment of a shaft forging, wherein the end of the shaft forging (10) is provided with a flange (11), characterized in that, The lifting gear includes: Hanging cap (100); A crossbeam (200) is provided with a first lifting lug (210) and a second lifting lug (220) at both ends, and a lifting rod (300) is detachably connected at one end to the lifting cap (100) and detachably connected at the other end to the crossbeam (200); The first hanging plate (400) is slidably disposed on the first lifting lug (210), and the first hanging plate (400) is provided with a first opening (410); The second hanging plate (500) is slidably disposed on the second lifting lug (220) parallel to the first hanging plate (400), and the second hanging plate (500) is provided with a second opening (510); The distance between the first mounting plate (400) and the second mounting plate (500) is adjustable so that the two ends of the flange (11) in the axial direction are respectively embedded in the first opening (410) and the second opening (510), so that the flange (11) is clamped between the first mounting plate (400) and the second mounting plate (500).

2. The lifting tool for heat treatment of shaft forgings according to claim 1, characterized in that, The lifting device also includes a pull rod (600), with stops (610) provided at both ends of the pull rod (600). The pull rod (600) passes through the first hanging plate (400) and the second hanging plate (500) in sequence. The stop (610) at one end of the pull rod (600) stops on the side of the first hanging plate (400) away from the second hanging plate (500), and the stop (610) at the other end stops on the side of the second hanging plate (500) away from the first hanging plate (400).

3. The lifting tool for heat treatment of shaft forgings according to claim 1, characterized in that, The hanging cap (100) includes a hanging arm (110) and a hanging plate (120). The hanging arm (110) is fixedly connected to the hanging plate (120). The hanging plate (120) is provided with a first through hole (121) for the hanging rod (300) to pass through. The crossbeam (200) is provided with a second through hole (230) for the hanging rod (300) to pass through. The hanging rod (300) passes through the second through hole (230) and the first through hole (121) in sequence. One end of the hanging rod (300) is stopped at the top of the hanging plate (120) by a limiting member (700), and the other end is stopped at the bottom of the crossbeam (200).

4. The lifting tool for heat treatment of shaft forgings according to claim 3, characterized in that, The limiting member (700) is a pin, and the end of the rod (300) that passes through the first through hole (121) is provided with a pin hole, and the pin is inserted into the pin hole.

5. The lifting tool for heat treatment of shaft forgings according to claim 3, characterized in that, The hanging arm (110) is an arched hanging arm (110).

6. The lifting tool for heat treatment of shaft forgings according to claim 3, characterized in that, The boom (300) includes a first member (310), a second member (320), and a third member (330) connected in sequence. The first member (310) stops at the bottom of the crossbeam (200). The third member (330) extends out from the first through hole (121). The diameter of the first member (310) is larger than the diameter of the third member (330). The second member (320) is tapered. The large end face of the second member (320) is fixedly connected to the first member (310), and the small end face of the second member (320) is fixedly connected to the third member (330).

7. The lifting tool for heat treatment of shaft forgings according to claim 6, characterized in that, The first rod (310), the second rod (320) and the third rod (330) are an integral structure.

8. The lifting tool for heat treatment of shaft forgings according to claim 3, characterized in that, The hanging arm (110) and the hanging plate (120) are an integral structure.

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