A metal casting heat treatment process hoisting and feeding device

Abstract

The utility model relates to metal casting processing technical field, concretely relates to a kind of metal casting heat treatment process hoisting and loading device, including bearing frame, connecting structure, workpiece support part and barycentre control unit, bearing frame is connected with hoisting equipment, connecting structure is set on bearing frame, the lower end of connecting structure is detachably connected with workpiece support part, barycentre control unit is assembled in bearing frame, and barycentre control unit can move along bearing frame to adjust device overall barycentre position. Through modular structure design, the stable hoisting and transfer of metal casting in heat treatment process are realized, especially for the problem that the hoisting inclination of special-shaped, heavy casting is easily caused by barycentre deviation, the safety and adaptability are improved by the structure design of adjustable barycentre, both solve the problem of poor adaptability of traditional hoisting device to special-shaped casting, and hoisting stability is improved by barycentre control, applicable to the scene of higher hoisting precision and safety requirement in metal casting heat treatment field.

Description

Technical Field

[0001] This utility model relates to the field of metal casting processing technology, specifically to a hoisting and loading device for metal casting heat treatment process. Background Technology

[0002] In the metal casting production process, heat treatment is a crucial step in ensuring the mechanical properties of castings, while the hoisting and loading device is the core equipment connecting the casting process and the heat treatment equipment. Its main function is to accurately transfer the metal castings to be processed (such as gears, valve bodies, flanges, etc.) from the storage station to the heat treatment furnace, or to automate the transfer of castings between multiple processes such as quenching and tempering, so as to reduce temperature fluctuations and workpiece damage caused by manual intervention.

[0003] Currently, the commonly used hoisting and loading devices in the industry are mainly divided into two categories: one is mechanical hoisting devices, which connect hooks through wire ropes, chains or rigid hangers, and use the lifting mechanism of cranes or gantry cranes to realize the lifting and translation of castings. The hooks and castings are mostly fixed by hooks, clamps or magnetic attraction; the other is semi-automatic hoisting systems, which integrate simple limit switches and limit devices, and can complete the loading action of fixed path within the preset track, but still require manual assistance to position the center of gravity of the casting.

[0004] In actual production, the hoisting and loading process of these devices has obvious limitations: For irregularly shaped castings (such as box-shaped parts with asymmetrical structures), traditional hoisting devices cannot adapt to the center of gravity of the workpiece, requiring manual adjustment of the workpiece's position in the hoisting device. During hoisting, skewing is prone to occur, leading to collisions between the casting and the furnace opening, surface scratches, and even the risk of the workpiece falling. For castings of different sizes or weights, it is necessary to manually change the hook or adjust the hoisting point. The device has poor versatility, and the changeover time is as long as 30-60 minutes, which seriously affects the production line cycle time. In addition, some devices lack real-time attitude monitoring. When the casting tilts at an angle of more than 5° due to hoisting imbalance, it cannot trigger an early warning or braking in time, further exacerbating the hidden dangers to process stability and production safety.

[0005] With the increasing demands for precision and performance in high-end equipment manufacturing, traditional hoisting and loading devices can no longer meet the production requirements of "high stability and high adaptability" in heat treatment processes. Therefore, developing a loading device that can automatically adapt to different casting centers of gravity, effectively prevent hoisting skew, and quickly switch hoisting specifications has become an urgent technical problem to be solved in the field of metal heat treatment. Utility Model Content

[0006] To address the aforementioned issues, a lifting and loading device for metal casting heat treatment processes is provided. Through modular structural design, it achieves stable lifting and transfer of metal castings during the heat treatment process. In particular, it addresses the problem of tilting during lifting of irregularly shaped and heavy castings due to center of gravity shift. The adjustable center of gravity structure design improves safety and adaptability, solving the problem that traditional lifting devices cannot adapt to the center of gravity position of the workpiece and require manual adjustment of the workpiece's position within the lifting device.

[0007] To address the existing technical problems, this utility model provides a lifting and loading device for heat treatment of metal castings, including a bearing frame, a connecting structure, a workpiece support, and a center of gravity adjustment unit. The bearing frame is connected to a lifting device, the connecting structure is disposed on the bearing frame, and the lower end of the connecting structure is detachably connected to the workpiece support. The center of gravity adjustment unit is assembled on the bearing frame and can move along the bearing frame to adjust the overall center of gravity position of the device.

[0008] Preferably, the load-bearing frame includes a balance beam frame, the balance beam frame is provided with a through hole, a number of limiting plates are arranged in an array in the through hole, a number of slots are provided at intervals on the limiting plates, and the center of gravity adjustment unit is disposed in the through hole.

[0009] Preferably, the center of gravity adjustment unit includes an adjusting rod and a counterweight. The adjusting rod is confined in a slot of a limiting plate, and a plurality of limiting blocks are spaced apart on the adjusting rod. The limiting blocks can confine the rod between two adjacent limiting plates, and two sets of counterweights are detachably connected to the two ends of the adjusting rod.

[0010] Preferably, the two sets of connection structures are symmetrically arranged at both ends of the balance beam. The connection structure includes a connecting plate, a sprocket, a chain, and a hook. The sprocket is rotatably connected to the connecting plate, and the connecting plate is detachably connected to the balance beam. The chain is connected to the sprocket, and the end of the chain is connected to a hook. The hook can be connected to the workpiece support part.

[0011] Preferably, the workpiece support portion includes horizontal ribs and vertical ribs, with a plurality of horizontal ribs spaced apart and a plurality of vertical ribs spaced apart and welded to the horizontal ribs to form a grid structure, and the hooks can be connected to the horizontal ribs or the vertical ribs.

[0012] Preferably, a hanging ring is provided on the top of the balance beam, and the balance beam is connected to the lifting equipment through the hanging ring.

[0013] Preferably, an attitude sensor is integrated on the balance beam, which can capture the instantaneous tilting attitude of the balance beam.

[0014] Preferably, the attitude sensor transmits data wirelessly to the PLC in the control cabinet.

[0015] The advantages of this utility model compared to the prior art are:

[0016] The modular structural design enables stable hoisting and transportation of metal castings during heat treatment. In particular, it addresses the problem of tilting during hoisting of irregularly shaped and heavy castings due to center of gravity shift. The adjustable center of gravity structure design enhances safety and adaptability. The combination of "universal load-bearing capacity + replaceable support + dynamic center of gravity adjustment" not only solves the problem of poor adaptability of traditional hoisting devices to irregularly shaped castings, but also improves hoisting stability through center of gravity adjustment. It is especially suitable for scenarios in the field of metal casting heat treatment where hoisting accuracy and safety requirements are high. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a hoisting and loading device for a heat treatment process of metal castings according to this utility model.

[0018] Figure 2 This is a schematic diagram of the split structure of a hoisting and loading device for heat treatment of metal castings according to this utility model.

[0019] Figure 3 This is a schematic diagram showing the connection structure and the supporting frame of a hoisting and loading device for heat treatment of metal castings according to this utility model.

[0020] Figure 4 This is a schematic diagram of the connection structure between the load-bearing frame and the center of gravity control unit of a hoisting and feeding device for heat treatment of metal castings according to this utility model.

[0021] Figure 5 This is a schematic diagram of the supporting frame structure of a hoisting and loading device for heat treatment of metal castings according to this utility model.

[0022] Figure 6 This is a schematic diagram of the center of gravity control unit of a hoisting and loading device for heat treatment of metal castings according to this utility model.

[0023] The following components are labeled in the diagram: load-bearing frame 1, balance beam 10, through hole 100, limiting plate 101, slot 102, hanging ring 103, connecting structure 2, connecting plate 20, sprocket 21, chain 22, hook 23, workpiece support 3, horizontal rib 30, vertical rib 31, center of gravity adjustment unit 4, adjusting rod 40, limiting block 400, and counterweight block 41. Detailed Implementation

[0024] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0025] like Figures 1-6 As shown, this utility model provides a lifting and loading device for heat treatment of metal castings, including a bearing frame 1, a connecting structure 2, a workpiece support part 3, and a center of gravity adjustment unit 4. The bearing frame 1 is connected to the lifting equipment, the connecting structure 2 is set on the bearing frame 1, and the lower end of the connecting structure 2 is detachably connected to the workpiece support part 3. The center of gravity adjustment unit 4 is assembled on the bearing frame 1, and the center of gravity adjustment unit 4 can move along the bearing frame 1 to adjust the overall center of gravity position of the device.

[0026] Modular structural design enables stable hoisting and transportation of metal castings during heat treatment, especially addressing the issue of tilting during hoisting of irregularly shaped and heavy castings due to center of gravity shift. An adjustable center of gravity design enhances safety and adaptability. The load-bearing frame 1, as the main load-bearing structure, must possess high strength and rigidity. It is typically formed by welding or bolting together structural steel (such as I-beams or rectangular steel pipes) and can be designed as a single beam, double beam, or truss structure to accommodate castings of different weights. The connecting structure 2 is the intermediate connecting part between the load-bearing frame 1 and the workpiece support 3. It can be designed in various forms according to the hoisting requirements of the casting: for example, for small and medium-sized castings, rigid lifting rods (with threads or pins at both ends) can be used; for large castings or castings requiring fine-tuning of angles, chains 22 and wire ropes with turnbuckles (for easy length adjustment) can be used; for irregular castings, further... Multiple sets of detachable branch connection structures 2 can be designed to achieve multi-point hoisting; the workpiece support part 3 is a component that directly contacts the metal casting, and its structure can match the shape characteristics of the casting. In order to adapt to the heat treatment process, the surface of the support part can be treated with wear-resistant and high-temperature resistant treatment (such as spraying ceramic coating) to avoid the casting being scratched or deformed due to high temperature during hoisting; the center of gravity adjustment unit 4 is used to dynamically balance the hoisting center of gravity. When the center of gravity of the casting shifts due to the asymmetry of its shape, the offset can be offset by moving the position of the center of gravity adjustment unit 4, so that the total center of gravity of the entire device is kept on the same vertical line as the hoisting point of the lifting equipment, thereby avoiding hoisting tilt.

[0027] The lifting equipment drives the entire device to rise and fall through the support frame 1. The connecting structure 2 connects the workpiece support part 3 to the support frame 1. After the workpiece support part 3 fixes the casting, the operator (or automatic control system) adjusts the overall center of gravity by moving the center of gravity adjustment unit 4 according to the center of gravity position of the casting to ensure that the device remains horizontal and stable during the hoisting process, and finally realizes the safe transfer of the casting between heat treatment processes (such as from the material rack to the heating furnace, from the quenching pool to the cooling zone).

[0028] The load-bearing frame 1 includes a balance beam 10, on which a through hole 100 is provided. Several sets of limiting plates 101 are arranged in an array within the through hole 100. Several slots 102 are spaced apart on each limiting plate 101. A center-of-gravity adjustment unit 4 is disposed within the through hole 100. Figures 4-5 As shown, the center of gravity adjustment unit 4 is set in the through hole 100 and moves to realize the adjustment of the center of gravity of the supporting frame 1 and even the entire hoisting and loading device. The structure of multiple sets of limiting plates 101 and multiple slots 102 on each set of limiting plates 101 can use the center of gravity adjustment unit 4 to move in the front, back and left and right directions, thereby adjusting the center of gravity of the hoisting and loading device in multiple dimensions.

[0029] The center of gravity adjustment unit 4 includes an adjusting rod 40 and counterweights 41. The adjusting rod 40 is confined in the slot 102 of the limiting plate 101. Several limiting blocks 400 are spaced apart on the adjusting rod 40, and the limiting blocks 400 can confine between two adjacent limiting plates 101. Two sets of counterweights 41 are detachably connected to both ends of the adjusting rod 40. Figure 6 As shown, the adjusting rod 40 can be confined in the slot 102, and a limiting block 400 is provided on the adjusting rod 40 so that the adjusting rod 40 can be limited when it moves on the limiting plate 101. The weight of the counterweight 41 is adjustable, for example, it is composed of multiple metal discs, and the weight of the counterweight 41 can be adjusted by adding or removing metal discs.

[0030] Two sets of connecting structures 2 are symmetrically arranged at both ends of the balance beam frame 10. Each connecting structure 2 includes a connecting plate 20, a sprocket 21, a chain 22, and a hook 23. The sprocket 21 is rotatably connected to the connecting plate 20, and the connecting plate 20 is detachably connected to the balance beam frame 10. The chain 22 is connected to the sprocket 21, and the end of the chain 22 is connected to the hook 23. The hook 23 can connect to the workpiece support part 3. Figures 1-3 As shown, the connecting plate 20 can be a steel component. The connecting plate 20 is bolted to the end sprocket 21 of the balance beam frame 10, which can drive the chain 22 to make fine adjustments to its length, thereby further improving adaptability. At the same time, the four sets of hooks 23 on the two sets of connecting structures 2 can connect to the four positions of the workpiece support part 3. By changing the connection point between the hook 23 and the workpiece support part 3, the load-bearing stability of the workpiece support part 3 can be further increased.

[0031] The workpiece support part 3 includes horizontal ribs 30 and vertical ribs 31. A plurality of horizontal ribs 30 are spaced apart, and a plurality of vertical ribs 31 are spaced apart and welded to the horizontal ribs 30 to form a grid structure. Hooks 23 can be connected to either the horizontal ribs 30 or the vertical ribs 31. Figures 1-2 As shown, the workpiece support 3 is composed of several horizontal ribs 30 and vertical ribs 31. This structure is simple and easy to connect with the hook 23. Both the horizontal ribs 30 and the vertical ribs 31 are steel bars, which are readily available in construction site environments. When it is necessary to increase the bearing area of ​​the workpiece support 3, more steel bars can be cut and welded into the original workpiece support 3. This is convenient to operate and the materials are readily available, making it more suitable for construction site environments.

[0032] A hanging ring 103 is installed at the top of the balance beam 10, and the balance beam 10 is connected to the lifting equipment through the hanging ring 103. The hanging lug is the core component for transmitting lifting force, and it needs to be mechanically verified according to the maximum load capacity to ensure that it does not deform or break during the lifting process.

[0033] An integrated attitude sensor is installed on the balance beam 10, which can capture the instantaneous tilt attitude of the balance beam 10. The attitude sensor transmits the data wirelessly to the PLC in the control cabinet. The attitude sensor integration includes a three-axis accelerometer and a gyroscope (low-cost modules such as MPU6050) to collect tilt angle and acceleration change data in real time during the hoisting process. The sensor sampling frequency is no less than 10 Hz to ensure the capture of instantaneous tilt states. A safe tilt threshold, such as 3°-5°, can be preset for the three-axis accelerometer, taking into account the characteristics of the metal casting, such as center of gravity height and shape symmetry. When the three-axis accelerometer detects a tilt angle exceeding the threshold in any direction, a warning signal is triggered. The attitude sensor integration transmits the data wirelessly, such as via Bluetooth or LoRa, to the PLC or microcontroller in the control cabinet, which can display the current tilt angle and warning level in real time on the operation panel screen to assist operators in making judgments.

[0034] It should be noted that vibration damping pads are added at the installation point of the attitude sensor integration to filter vibration noise during hoisting, and redundant verification is used for data transmission to avoid misjudgment caused by signal interference.

[0035] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A hoisting and loading device for heat treatment of metal castings, characterized in that, The device includes a support frame (1), a connecting structure (2), a workpiece support (3), and a center of gravity adjustment unit (4). The support frame (1) is connected to the lifting equipment. The connecting structure (2) is disposed on the support frame (1). The lower end of the connecting structure (2) is detachably connected to the workpiece support (3). The center of gravity adjustment unit (4) is assembled on the support frame (1) and can move along the support frame (1) to adjust the overall center of gravity position of the device.

2. The hoisting and loading device for heat treatment of metal castings according to claim 1, characterized in that, The load-bearing frame (1) includes a balance beam frame (10), a through hole (100) is provided on the balance beam frame (10), a number of limiting plates (101) are arranged in an array in the through hole (100), a number of slots (102) are provided at intervals on the limiting plates (101), and the center of gravity adjustment unit (4) is disposed in the through hole (100).

3. The hoisting and loading device for heat treatment of metal castings according to claim 2, characterized in that, The center of gravity control unit (4) includes an adjusting rod (40) and a counterweight (41). The adjusting rod (40) is confined in the slot (102) of the limiting plate (101). Several limiting blocks (400) are spaced apart on the adjusting rod (40). The limiting blocks (400) can be confined between two adjacent limiting plates (101). Two sets of counterweights (41) are detachably connected to both ends of the adjusting rod (40).

4. The hoisting and loading device for heat treatment of metal castings according to claim 2, characterized in that, Two sets of the connection structures (2) are symmetrically arranged at both ends of the balance beam (10). The connection structure (2) includes a connection plate (20), a sprocket (21), a chain (22), and a hook (23). The sprocket (21) is rotatably connected to the connection plate (20). The connection plate (20) is detachably connected to the balance beam (10). The chain (22) is connected to the sprocket (21). The end of the chain (22) is connected to the hook (23). The hook (23) can be connected to the workpiece support part (3).

5. A hoisting and loading device for heat treatment of metal castings according to claim 4, characterized in that, The workpiece support part (3) includes horizontal ribs (30) and vertical ribs (31). A number of horizontal ribs (30) are spaced apart, and a number of vertical ribs (31) are spaced apart and welded to the horizontal ribs (30) to form a grid structure. The hook (23) can be connected to the horizontal ribs (30) or the vertical ribs (31).

6. A hoisting and loading device for heat treatment of metal castings according to claim 2, characterized in that, The top of the balance beam (10) is provided with a hanging ring (103), and the balance beam (10) is connected to the lifting equipment through the hanging ring (103).

7. A hoisting and loading device for heat treatment of metal castings according to claim 2, characterized in that, An attitude sensor is integrated on the balance beam (10), which can capture the instantaneous tilting attitude of the balance beam (10).

8. A hoisting and loading device for heat treatment of metal castings according to claim 7, characterized in that, The attitude sensor transmits data wirelessly to the PLC in the control cabinet.

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