Adjustable combined type pit furnace lifting appliance

Abstract

The utility model relates to the technical field of pit furnace lifting appliance devices, and particularly discloses an adjustable combined type pit furnace lifting appliance which comprises a lifting appliance frame, and a plurality of cross beams are arranged at the lower end of the lifting appliance frame in the radial direction; a plurality of limiting grooves are sequentially formed in the cross beam in the length direction of the cross beam, and at most one hanging ring is arranged in each limiting groove; the lifting ring comprises a clamping seat and a lifting lug used for hanging a workpiece, the clamping seat is movably arranged on the limiting groove, and the lifting lug is arranged at the lower end of the clamping seat. The overall stability of the lifting appliance is improved, it is guaranteed that the lifting appliance does not deform or crack in repeated hot and cold circulation, safety is high, the requirement for lifting of workpieces of different specifications and sizes is met, the application range of the lifting appliance is widened, the universality is high, the adjustable, movable and combinable lifting mode is achieved, the production cost of the lifting appliance is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft furnace hanging device, in particular to an adjustable combined shaft furnace hanging device. Background Art

[0002] The pit furnace is an equipment used for heat treatment such as normalizing, quenching, and tempering, and the pit furnace hoist is an indispensable loading and unloading body. During the heat treatment process, the hoist must be repeatedly heated and cooled in the furnace along with the workpiece (the temperature difference is 20℃-1000℃), which causes the hoist to be easily deformed or even cracked, affecting the stability of the workpiece hoisting, and even causing the workpiece to fall off and cause safety accidents. In addition, in the prior art, in order to ensure the safety of clamping, the structure of the pit furnace hoist used is generally more complex and bulky, and the operation is more cumbersome during clamping. In addition, due to the different structures of each workpiece, different hoists need to be replaced, resulting in a long auxiliary work time for heat treatment. And sometimes a hoist can only be used for one workpiece, the scope of application of the hoist is small, and the most easily damaged part of the hoist is the workpiece hanging place. When the hoist is deformed or cracked, the entire hoist can only be scrapped and discarded, resulting in a waste of production materials, high production costs of the hoist, and low efficiency of the entire heat treatment process.

[0003] Therefore, in order to solve the problems that the existing pit furnace hoist has low versatility, cumbersome operation, easy deformation and cracking affecting production safety, high production cost, long operation time and affecting heat treatment efficiency, it is now necessary to provide an adjustable combined pit furnace hoist. Utility Model Content

[0004] The utility model aims to provide an adjustable combined pit furnace hanger to solve the problems of the pit furnace hanger in the prior art, such as small application range, complex and bulky structure, cumbersome operation, high manufacturing cost and affected heat treatment efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model specifically provides an adjustable combined pit furnace hanger, including a hanger frame, a plurality of cross beams are radially arranged at the lower end of the hanger frame; a plurality of limit grooves are sequentially arranged on the cross beams along the length direction of the cross beams, and at most one lifting ring is arranged in each of the limit grooves; the lifting ring includes a clamping seat and a lifting ear for hanging a workpiece, the clamping seat is movably arranged on the limit groove, and the lifting ear is arranged at the lower end of the clamping seat.

[0007] The principles and advantages of this solution are:

[0008] Through the hanger frame and crossbeam, the stability of the hanger is improved, the risk of deformation and cracking is reduced, and the safety of lifting is ensured. At the same time, according to the actual size of the workpiece, the lifting method can be flexibly selected so that the hanger can meet the lifting of workpieces of various sizes, thereby improving the versatility of the hanger, meeting the lifting needs of various workpieces, and reducing the number of special hangers required. At the same time, the workpiece can also be hoisted in a combined manner, making the hoisting method more flexible, reducing repeated hoisting operations, improving the efficiency of heat treatment, and reducing repeated heating and cooling of the hanger, thereby extending the service life of the hanger. In addition, the detachable lifting ring is adopted to reduce the overall weight of the hanger, making the operation easier and faster, reducing the labor intensity of the operator, and when deformation occurs at the lifting ring, only the corresponding lifting ring can be replaced, reducing material waste, reducing production costs, and ensuring the stability and safety of the workpiece hanging. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall state and structure of an adjustable combined pit furnace hanger of the utility model;

[0010] Figure 2 It is a schematic diagram of the overall state of an adjustable combined pit furnace hanger of the utility model;

[0011] Figure 3 The utility model is a schematic diagram of a lifting ring structure of an adjustable combined pit furnace lifting device. DETAILED DESCRIPTION

[0012] The following is further described in detail through specific implementation methods:

[0013] The figure marks in the drawings of the specification include: hanger frame 1, cross beam 2, through hole 3, main beam 4, upper cross plate 5, lower cross plate 6, limit groove 7, lifting ring 8, block 9, clamping seat 10, lifting ear 11, open end 12, connecting plate 13, limit hole 14.

[0014] Embodiment 1

[0015] This embodiment is basically as shown in the attached Figure 1 As shown: an adjustable combined pit furnace hoist is used for hoisting workpieces in pit furnace heat treatment production, realizing fast and safe clamping, ensuring that the hoist is not easy to deform and crack during heat treatment production, and can be used repeatedly, reducing production costs and improving the versatility of the hoist. Specifically, it includes a hoist frame 1 with an overall circular ring structure, that is, the hoist frame 1 is a circular ring structure, and the hoist frame 1 is made of heat-resistant steel with a diameter of 1200mm, so that it can be suitable for hoisting pit furnaces, meet the processing requirements of various pit furnaces, and prevent deformation and cracking.

[0016] A plurality of cross beams 2 are integrally casted with heat-resistant steel in the hanger frame 1, and the cross beams are arranged in a uniform circle in the hanger frame 1. In this embodiment, the cross beams 2 are arranged in a uniform circle on the hanger frame 1. In another embodiment, the cross beams 2 can be arranged in a number of 4, 6, 9, etc. according to the size of the workpiece to be hoisted, so as to improve the versatility and application range of the hanger. Among them, one end of the cross beam 2 is connected to the inner ring of the hanger frame 1, and the other end is connected to each other to form a through hole 3 located in the center of the hanger frame 1. The hanger frame can be hung on the hoisting equipment through the through hole 3, which is convenient for installation and disassembly.

[0017] In this embodiment, the crossbeam 2 includes a main beam 4 located vertically in the middle, and an upper cross plate 5 and a lower cross plate 6 are cast on the upper and lower sides of the main beam 4, respectively, so that the crossbeam 2 is vertically located in the middle of the upper cross plate 5 and the lower cross plate 6, forming an I-shaped structure as a whole, so as to improve the stability of the crossbeam 2, and simplify the structure to facilitate the fixing of the lifting ring 8, thereby reducing the overall weight of the sling. In this embodiment, the thickness of the main beam 4 is set to 20mm, the width of the upper cross plate 5 is set to 60mm, and the thickness is 40mm; the width of the lower cross plate 6 is 40mm, and the thickness is 20mm, so as to ensure the overall strength of the crossbeam 2, avoid deformation or cracking during the repeated heating and cooling of the workpiece, and improve the service life of the sling, so as to reduce the equipment replacement rate and reduce production costs.

[0018] Combined with Figure 2 As shown, a plurality of limiting grooves 7 are cast in sequence at the lower end of the cross beam 2 along the length direction of the cross beam 2. In this embodiment, the limiting grooves 7 are respectively located on both sides of the cross beam 2, which is convenient for limiting and fixing the installed lifting ring 8. In this embodiment, the limiting groove 7 includes a plurality of stoppers 9 arranged at intervals on both sides of the main beam 4, and the lower end of each stopper 9 is fixedly connected to the surface of the lower cross plate 6. In this embodiment, the width of the set stopper 9 is not greater than the width of the lower cross plate 6 located on both sides of the main beam 4, which is more convenient for the lifting and limiting of the lifting ring 8, and also reduces the overall weight of the sling and reduces the material cost.

[0019] At most one lifting ring 8 can be flexibly installed in each limiting groove 7. In this embodiment, the position of the lifting ring 8 can select the corresponding limiting groove 7 according to the size of the hoisted workpiece to meet the hoisting needs of workpieces of different sizes. At the same time, when multiple workpieces need to be hoisted, a combination of methods can be selected to hoist them simultaneously to increase the hoisting capacity, improve the hoisting versatility, and reduce production time.

[0020] As attached Figure 3As shown, the lifting ring 8 includes a clamping seat 10 and a lifting ear 11 for hanging the workpiece. The lifting ring 8 is movably buckled on the corresponding limiting groove 7 through the clamping seat 10, and the lifting ear 11 is arranged at the middle position of the lower end of the clamping seat 10. In this embodiment, the clamping seat 10 is a C-shaped structure including an open end 12, wherein the opening width of the open end 12 is greater than the thickness of the main beam 4 and less than the width of the lower cross plate 6, so that the lifting ring 8 can directly pass through the main beam 4 through the open end 12 and be buckled on the upper cross plate 5, and at the same time, the position is limited by the stopper 9 to ensure the stability of the lifting ring 8 and prevent the workpiece from moving during the lifting process to affect the heat treatment effect of the workpiece. In this embodiment, the width of the clamping seat 10 is set to be smaller than the width of the limiting groove 7 to ensure that the lifting ring 8 can be installed in the limiting groove 7 and at the same time ensure the stability of the lifting ring 8.

[0021] In this embodiment, the lifting ear 11 includes a connecting plate 13 with an overall square structure. The connecting plate 13 is located in the middle position of the bottom of the clamping seat 10. A limiting hole 14 for hanging is opened on the connecting plate 13. In this embodiment, the diameter of the limiting hole 14 is set to 35 mm so as to meet the hanging needs of various workpieces. At the same time, the strength of the end of the lifting ear 11 is strengthened to avoid deformation and cracking that may cause the workpiece to fall off, thereby ensuring the stability of the lifting. At the same time, the limiting hole 14 structure is simpler, which is convenient for installation and operation, reduces the difficulty of operation, and improves the efficiency of lifting operation.

[0022] The specific implementation process is as follows:

[0023] As attached Figure 1 To Attachment Figure 3 As shown, when it is necessary to hoist a workpiece, the size and structure of the workpiece to be hoisted are first determined. In this embodiment, each crossbeam 2 hangs a large-size workpiece of φ200mm, and the number of required lifting rings 8 is determined to be one for each crossbeam 2, and the position of the corresponding limit groove 7 of the lifting ring 8 is determined. Then, the open end of the lifting ring 8 is directed toward the main beam 4, so that the lifting ear 11 is facing downward, and the clamping seat 10 is operated to make the main beam 4 pass through the open end 12 of the clamping seat 10 and move the clamping seat 10 on the upper part of the main beam 4. When the lifting ring 8 reaches the position above the corresponding limit groove 7, the lifting ring 8 is lowered so that it is buckled in the limit groove 7, thereby completing the installation of the lifting ring 8. Then, according to the determined position and number of the lifting ring 8, the remaining lifting rings 8 are installed on the corresponding limit groove 7 in sequence. Finally, through the reserved lifting hole of the hook and the end of the workpiece or by tying the end of the workpiece with steel wire, the lifting hook is correspondingly hung in the limit hole 14 of the lifting ear 11 in sequence to complete the lifting of the workpiece.

[0024] In this embodiment, the adjustable combined pit furnace hanger is integrally cast with heat-resistant steel to improve the overall stability of the hanger, ensure that the hanger does not deform or crack during repeated hot and cold cycles, and has high safety. According to actual use, 4-9 beams can be evenly distributed on its surface to meet the hanging of workpieces of different specifications and sizes, expand the scope of application of the hanger, and the number of beams can be flexibly set according to the hanging requirements. The design structure is simple, light in weight, and reduces production costs. It is easy to operate and has high versatility. At the same time, the corresponding number of lifting rings can be selected according to the size of the workpiece to be hung to meet the hanging requirements of different workpiece sizes, and an adjustable, movable, and combinable hanging method is realized to ensure that parts of various specifications can be heat treated, which makes clamping simpler and improves the efficiency of heat treatment processing. The replacement of the lifting ring part can be achieved through the movable lifting ring. Even if the lifting ring is damaged, it will not affect the entire hanger, avoiding the waste of overall materials, thereby reducing the production cost of the hanger.

[0025] Embodiment 2

[0026] Different from the first embodiment, in this embodiment, when the size of the workpiece to be hoisted meets the requirements of combined hoisting, a combined hoisting method can be selected, such as hanging four small workpieces of φ90mm on each beam 2, or multiple small workpieces of different sizes. In this embodiment, the hanging of multiple workpieces of different sizes is used as an example. For example, if the size of workpiece one is φ90mm and the size of workpiece two is φ60mm, the two workpieces can be hoisted in combination at the same time to improve the efficiency of the hoisting equipment, and the heat treatment process can be carried out at the same time to shorten the process time and improve production efficiency. The specific operation process is as follows:

[0027] First, determine the corresponding hanging positions of the two workpieces. In this embodiment, the larger workpiece 1 can be hung on the outside of the smaller workpiece 2 to form a combined hanging, while keeping the hanging stable. Determine the hanging position according to the determined combined hanging method, so as to determine the number of lifting rings 8 required for workpiece 1 and workpiece 2 respectively. For example, two workpieces 1 and two workpieces 2 are hung on each crossbeam 2, and the number of lifting rings 8 on each crossbeam 2 is determined to be 4, and each lifting ring 8 corresponds to the installation of a position of a limit groove 7. Then, according to the determined positions of the lifting ring 8 and the limit groove 7, the lifting ring 8 is clamped on the corresponding limit groove 7 according to the steps in the first embodiment. Then, the smaller workpiece 2 is first hung on the two rings of lifting rings 8 located on the inner circle with the help of the lifting hook, and then the workpiece 1 is hung on the two rings of lifting rings 8 located on the outer circle with the help of the lifting hook, so as to complete the combined hanging of multiple workpieces of different sizes, so as to shorten the auxiliary operation time, heat treat multiple workpieces at the same time, and improve the heat treatment efficiency.

[0028] In this embodiment, combined lifting can be carried out according to the different sizes of the workpieces, the loading capacity of the lifting equipment can be increased, the intermediate process of constantly replacing the lifting equipment can be reduced, one-time lifting heat treatment can be achieved, the auxiliary working time of the heat treatment can be effectively shortened, and the overall lifting efficiency can be improved. At the same time, lifting can also reduce the number of repeated hot and cold treatments of the lifting equipment, effectively increase the service life of the lifting equipment, reduce the chance of damage to the lifting equipment, avoid material waste, and reduce production costs.

[0029] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An adjustable combined pit furnace hanger, characterized in that: It includes a hanger frame, at the lower end of which a plurality of crossbeams are radially arranged; on the crossbeams a plurality of limit grooves are arranged in sequence along the length direction of the crossbeams, and at most one lifting ring is arranged in each of the limit grooves; the lifting ring includes a clamping seat and a lifting ear for hanging a workpiece, the clamping seat is movably arranged on the limit groove, and the lifting ear is arranged at the lower end of the clamping seat.

2. The adjustable combined pit furnace hanger according to claim 1, characterized in that: The crossbeam comprises a main beam, and an upper cross plate and a lower cross plate are respectively arranged on the upper and lower sides of the main beam to make the crossbeam into an I-shaped structure; the thickness of the main beam is 20-60mm; the width of the upper cross plate is 50-160mm, and the thickness is 30-60mm; the width of the lower cross plate is 30-50mm, and the thickness is 15-35mm.

3. The adjustable combined pit furnace hanger according to claim 2, characterized in that: The limiting grooves are arranged on both sides of the cross beam; the limiting grooves include a plurality of stoppers arranged at intervals on the lower cross plate.

4. The adjustable combined pit furnace hanger according to claim 2, characterized in that: The clamping seat is a C-shaped structure including an open end, and the opening width of the open end is greater than the thickness of the main beam and smaller than the width of the lower cross plate.

5. The adjustable combined pit furnace hanger according to claim 1, characterized in that: The width of the clamping seat is smaller than the width of the limiting groove.

6. The adjustable combined pit furnace hanger according to claim 1, characterized in that: The hanger frame is a circular ring structure, and the cross beams are arranged in 4-9 pieces and are evenly arranged in the hanger frame.

7. The adjustable combined pit furnace hanger according to claim 1, characterized in that: A through hole for hanging is arranged in the middle of the hanger frame.

8. The adjustable combined pit furnace hanger according to claim 1, characterized in that: The hanger frame and the crossbeam are integrally formed of heat-resistant steel.

9. The adjustable combined pit furnace hanger according to claim 1, characterized in that: The lifting ear comprises a connecting plate, and the connecting plate is arranged in the middle of the bottom of the clamping seat; a limiting hole for hanging is arranged on the connecting plate; the diameter of the limiting hole is 35-60mm.

10. The adjustable combined pit furnace hanger according to claim 3, characterized in that: The width of the stopper is not greater than the width of one side of the lower transverse plate.

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