A hoist for ion nitriding furnaces

Abstract

The utility model discloses a kind of hoisting devices for ion nitriding furnace, comprising: lifting appliance, connecting piece, pin shaft type sensor, conical guide assembly and displacement sensor, lifting appliance is set on the motor protective cover above the top of furnace cover, connecting piece connects lifting appliance and furnace body, the end of connecting piece is unhooked;Pin shaft type sensor is connected with unhooked through lifting lug on furnace body;Conical guide assembly is set in furnace base;Displacement sensor is located at the top of conical guide assembly, and towards furnace body center.The utility model is through the cooperation of conical guide column and displacement sensor, can realize the perfect centering of furnace body and hearth, completely avoid the damage to furnace body and its furnace inner component;Through the combination of lifting appliance assembly and shaft pin type sensor, swinging in the hoisting process of furnace body can be prevented, eliminate the security risk brought by furnace body swing, can realize ion nitriding furnace each component synchronous fast, accurate, safe workpiece charging and discharging operation, improve the efficiency and safety of entire technological process.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat treatment equipment, specifically relating to a lifting device for an ion nitriding furnace. Background Technology

[0002] When loading and unloading an ion nitriding furnace, it is typically necessary to lift and remove the motor, furnace body, furnace cover, and all internal components. The conventional procedure involves operators frequently hooking hooks and using an overhead crane to separately lift and move the furnace cover aside; then, a lifting tool (such as a boom) is used to pass through the lifting lugs on the furnace body to lift it out. This step-by-step operation method has the following significant drawbacks:

[0003] (1) Poor alignment: It is difficult for the general hook to be accurately aligned with the furnace chamber. When the workpiece enters the furnace opening, it is easy to collide and scratch the heat insulation screen, sealing components and insulation components inside the furnace wall. This increases the probability of the furnace opening, sealing surface and the components inside the furnace being bumped, affecting the accuracy and service life of the equipment.

[0004] (2) The operation is complicated and inefficient: It requires two separate lifting operations, which is time-consuming and labor-intensive. The loading and unloading time is long, the labor intensity is high, and the production efficiency is affected.

[0005] (3) Safety hazards exist: When hoisting the furnace body and internal components, operators need to frequently hook and connect, which poses a risk of mechanical injury and falls from height. At the same time, heavy components may slip or collide during multiple hoisting processes due to inaccurate positioning.

[0006] (4) Space occupied: It requires the preparation and switching of two types of lifting tools, which increases the complexity of equipment management and storage. Utility Model Content

[0007] To address the aforementioned problems, embodiments of this utility model propose a lifting device for an ion nitriding furnace.

[0008] The present invention relates to a lifting device for an ion nitriding furnace, comprising: a lifting device, which is disposed above the motor protective cover on the top of the furnace cover; a connector, which connects the lifting device and the furnace body, the end of which is a shackle; a pin-type sensor, which passes through a lifting lug on the furnace body and is connected to the shackle; a conical guide assembly, which is disposed in the furnace base; and a displacement sensor, which is located at the top of the conical guide assembly and faces the center of the furnace body.

[0009] The lifting device includes two crossbeams arranged in a cross shape, with side lifting rings at both ends of the crossbeams, and the intersection of the two crossbeams is connected by a mounting frame.

[0010] The mounting frame includes a top plate at the top of the crossbeam, a bottom plate at the bottom of the crossbeam, and a side plate connecting the top plate and the bottom plate. The top plate, the bottom plate, and the side plate are fixedly connected, and a top hanging ring is installed on the top of the top plate, with stiffening plates installed on both sides of the top hanging ring.

[0011] The crossbeam is a telescopic crossbeam, and the inside of the telescopic crossbeam is an electric telescopic rod or a hydraulic rod.

[0012] The connector is a chain or a spring. One end of the connector is fixedly connected to the side lifting ring, and the other end is fixedly connected to a shackle. The shackle is connected to the lifting lug of the furnace body through a pin-type sensor.

[0013] The conical guide assembly includes an electric telescopic rod located in the furnace base and a conical guide column installed at the top of the electric telescopic rod. The conical guide column includes a conical head and a guide column. The guide column is fixedly connected to the electric telescopic rod. The conical head and the guide column are integrally formed. The upper diameter of the conical head is smaller than the lower diameter.

[0014] The circumference of the tapered guide column is all inclined, or the side facing the inside of the furnace body is inclined. There is a groove inside the furnace body for placing the electric telescopic rod.

[0015] The top surface of the conical guide column is provided with a buckle, and the displacement sensor is installed on the top surface of the conical guide column through the buckle. There are at least three sets of conical guide components and displacement sensors, and there can also be four sets. The three or four sets of conical guide components and displacement sensors are arranged in a ring around the furnace base.

[0016] The lifting device further includes four lifting hydraulic rods, which are installed on the bottom of the outer casing of the overhead hoist or on the pulley casing above the overhead hoist hook via chains. Each lifting hydraulic rod is connected to a side lifting ring of the lifting device.

[0017] The piston end of the lifting hydraulic rod is connected to a hydraulic rod hook, and the hydraulic rod hook is connected to a side lifting ring.

[0018] The beneficial effects of this utility model are as follows: The lifting device specifically designed for ion nitriding furnaces, through the cooperation of conical guide columns and displacement sensors, can achieve perfect alignment between the furnace body and the furnace chamber, completely avoiding damage to the furnace body and its internal components; the combination of the lifting device assembly and the pin-type sensor can prevent swaying of the furnace body during lifting, eliminating the safety hazards caused by furnace body swaying, protecting operators, furnace mouth sealing surfaces and precision components, and extending the service life of the equipment; the work that originally required 2-3 people and took 10-20 minutes can be completed by 1 person in 1-2 minutes, significantly shortening the equipment start-up and shutdown time and increasing production efficiency by more than 50%; no need to change the lifting device, simplifying the operation process and reducing the skill requirements for operators; it can adapt to furnace body structures of various shapes and sizes, and is highly flexible. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the lifting device for an ion nitriding furnace according to this utility model.

[0020] Figure 2 This is a schematic diagram of the lifting device of this utility model. Figure 1 .

[0021] Figure 3 This is a schematic diagram of the lifting device of this utility model. Figure 2 .

[0022] Figure 4 This is a schematic diagram of the connection between the shackle and the pin-type sensor of this utility model.

[0023] Figure 5 This is a structural schematic diagram of the tapered guide assembly of this utility model.

[0024] Figure 6 This is a schematic diagram of the displacement sensor and buckle of this utility model.

[0025] Figure 7 This is a schematic diagram showing the position of the lifting hydraulic rod of this utility model.

[0026] Figure 8 yes Figure 7 Top view.

[0027] Figure 9 This is a schematic diagram of the present invention.

[0028] Figure label:

[0029] Lifting device 1; Horizontal beam 101; Side lifting ring 102; Mounting bracket 103; Top hanging ring 104; Rib plate 105; Telescopic horizontal beam 106; Connector 2; Displacement sensor 3; Buckle 301; Conical guide assembly 4; Conical head 401; Guide column 402; Electric telescopic rod 403; Furnace base 404; Furnace body 5; Lifting lug 501; Pin-type sensor 6; Shackle 601; Motor protective cover 7; Overhead crane hook 8; Lifting hydraulic rod 9; Hydraulic rod hook 901. Detailed Implementation

[0030] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] like Figures 1-9As shown, the lifting device for an ion nitriding furnace of this utility model includes: a lifting device 1, a connecting piece 2, a pin-type sensor 6, a conical guide assembly 4, and a displacement sensor 3. The lifting device 1 is set above the motor protective cover 7 on the top of the furnace cover, and the lifting device 1 can be placed on the motor protective cover 7.

[0032] The lifting device 1 includes two crossbeams 101 arranged in a cross shape. Each end of the crossbeams 101 is provided with a side lifting ring 102. The intersection of the two crossbeams 101 is connected by a mounting bracket 103. The two crossbeams 101 are fixedly connected at the intersection by welding.

[0033] Mounting bracket 103 includes a top plate at the top of crossbeam 101, a bottom plate at the bottom of crossbeam 101, and a side plate connecting the top plate and the bottom plate. The top plate, bottom plate, and side plate are fixedly connected. The top plate and bottom plate are located at the intersection of two crossbeams 101. The top plate, bottom plate, and side plate are fixedly connected by welding.

[0034] A top hanging ring 104 is installed on the top of the top plate, and stiffening plates 105 are installed on both sides of the top hanging ring 104. The top hanging ring 104 is used to connect with the overhead crane hook 8.

[0035] The crossbeam 101 is a telescopic crossbeam, with an internal electrically operated or hydraulically operated telescopic rod. This means that the crossbeam 101 can be replaced with a telescopic crossbeam to accommodate furnaces of different sizes.

[0036] The design of the cross beam 101 makes the four side lifting rings 102 four lifting points. Through the mechanical synchronous balance beam structure of the cross beam 101, it is ensured that the equipment remains horizontal during the lifting process, fundamentally eliminating swaying.

[0037] Connector 2 connects lifting device 1 and furnace body 5. The end of connector 2 is shackle 601. Connector 2 is a chain or spring. One end of connector 2 is fixedly connected to side lifting ring 102, and the other end is fixedly connected to shackle 601. Shackle 601 is connected to lifting lug 501 of furnace body 5 through pin-type sensor 6.

[0038] This application uses a pin-type sensor 6 to replace the original pin of the shackle. The pin-type sensor 6 passes through the lifting lug 501 on the furnace body 5 and is connected to the shackle 601; it is used to measure the force at that point. All four connecting parts 2 of the lifting device 1 are connected to the lifting lug 501 of the furnace body 5 through the shackle 601 and the pin-type sensor 6.

[0039] The lifting device further includes four lifting hydraulic rods 9, which are mounted on the bottom of the overhead hoist housing via chains or mounted on a pulley housing 801 above the overhead hoist hook 8 via horizontal plates 802 and vertical plates 803. Specifically, as... Figure 8 and Figure 9As shown, two horizontal plates 802 are fixedly connected to both sides of the pulley housing 801 by bolts. The two ends of the two horizontal plates 802 are respectively fixedly connected to the middle positions of two vertical plates 803. The two ends of the two vertical plates 803 are connected by two other connecting rods. A lifting hydraulic rod 9 is installed at the lower end of each vertical plate 803.

[0040] The lifting hydraulic rod 9 and the pin-type sensor 6 are both connected to the controller or PLC.

[0041] Each lifting hydraulic rod 9 is connected to a side lifting ring 102 of the lifting device 1. The piston end of the lifting hydraulic rod 9 is connected to a hydraulic rod hook 901, which is connected to the side lifting ring 102.

[0042] The operator operates the overhead crane so that the crane hook 8 passes through the top hanging ring 104. At the moment the furnace body 5 starts, the four pin-type sensors 6 measure the force at the four lifting lugs 501 respectively. The pin-type sensors 6 are connected to the controller or PLC. The controller calculates the force state of each pin-type sensor 6. If the force state is uneven, the lifting hydraulic rod 9 at the corresponding position is used for fine adjustment to actively suppress the swaying of the furnace body 5.

[0043] The pin-type sensor 6 directly replaces the original pin of the shackle 601. When subjected to force, the pin-type sensor 6 itself will produce a slight deformation, which is detected by the internal strain gauge and outputs a signal. It features direct measurement, high accuracy, no impact on the original structural strength, and convenient installation.

[0044] A conical guide assembly 4 is disposed in the furnace base 404; a displacement sensor 3 is located on top of the conical guide assembly 4 and faces the center of the furnace body. There are at least three sets of conical guide assemblies 4 and four sets of displacement sensors 3, and the three or four sets of conical guide assemblies 4 and displacement sensors 3 are arranged in a ring around the furnace base 404.

[0045] The conical guide assembly 4 includes an electric telescopic rod 403 located in the furnace base 404 and a conical guide column installed at the top of the electric telescopic rod 403. The conical guide column includes a conical head 401 and a guide column 402. The guide column 402 is fixedly connected to the electric telescopic rod 403. The conical head 401 and the guide column 402 are integrally formed, and the upper diameter of the conical head 401 is smaller than the lower diameter. Specifically, the circumference of the conical head 401 is either all inclined or only one side facing the interior of the furnace body 5 is inclined. The inclined surface helps the furnace body 5 to be positioned at the furnace opening when it descends and approaches the furnace mouth, thus aligning the furnace body 5 with the furnace chamber. The guide column 402 plays a guiding role, so that the furnace body 5 is lifted under the guidance of the guide column 402, allowing the entire furnace body to be lifted synchronously and smoothly away from the furnace base 404.

[0046] The furnace body 5 has a groove inside for placing the electric telescopic rod 403, which allows adjustment of the height of the conical guide column. This means the height of the conical guide column 402 can be adjusted according to actual needs. Alternatively, when the furnace body is lowered, the conical guide column 402 can be lowered to the furnace opening, allowing the furnace body 5 to be quickly placed on the furnace base 404 after centering. When the furnace body 5 is lifted, the conical guide column 402 can be raised, giving the furnace body 5 more time to move along the guide column 402 during lifting, resulting in a smoother movement of the entire furnace body 5.

[0047] A snap-fit ​​301 is provided on the top surface of the tapered guide column, and the displacement sensor 3 is installed on the top surface of the tapered guide column through the snap-fit ​​301. The displacement sensor 3 is connected to the controller and can detect the relative position between the guide column 402 and the outer wall of the furnace.

[0048] During the lifting process, the relative position between each guide column 402 and the furnace opening is monitored in real time by displacement sensor 3, and the data is transmitted to the controller for analysis. If the data is inconsistent, the position of the furnace body 5 needs to be adjusted according to the data until the data of each displacement sensor 3 tends to be consistent, thereby achieving the centering of the furnace body.

[0049] In practical use, during lifting operations, the overhead crane hook 8 hooks onto the top hanging ring 104 of the lifting device 1, raising the guide column 402. Displacement sensors 3 monitor the relative position between the guide column 402 and the outer wall of the furnace. Based on the data from the displacement sensors 3, when the data from different sensors 3 are inconsistent, the controller controls the overhead crane hook 8 to adjust the relative position of the furnace body, achieving furnace alignment. During the formal lifting of the furnace body, four pin-type sensors 6 measure the force at each of the four lifting lugs 501 and transmit the data to the controller or PLC. The controller or PLC calculates the force state of each pin-type sensor 6. If the force state is uneven, fine-tuning is performed through the corresponding lifting hydraulic rod 9 to actively suppress furnace body swaying. During continued lifting, the furnace body 5 moves along the guide column 402, allowing the entire furnace body 5 to be synchronously and smoothly lifted off the furnace base 404. After the furnace body 5 is lifted, the lifting device 1 is placed on the motor protective cover, and the four connecting parts 2 remain installed on the lifting lugs 501 of the furnace body and are not removed. During furnace loading, the furnace body can be lifted directly, thus enabling the motor, furnace body, furnace cover, and internal components to be lifted synchronously and in one go. This achieves integrated, rapid, and inherently safe furnace loading and unloading operations, significantly improving production efficiency and reducing operational and safety risks.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A lifting device for an ion nitriding furnace, characterized in that, include: The lifting device is positioned above the motor protective cover on the top of the furnace cover; A connector that connects the lifting device and the furnace body, with a shackle at the end of the connector; A pin-type sensor, wherein the pin-type sensor passes through a lifting lug on the furnace body and is connected to a shackle; A tapered guide assembly, wherein the tapered guide assembly is disposed in the furnace base; A displacement sensor is located at the top of the tapered guide assembly and faces the center of the furnace body.

2. The lifting device for an ion nitriding furnace according to claim 1, characterized in that, The lifting device includes two crossbeams arranged in a cross shape, with side lifting rings at both ends of the crossbeams, and the intersection of the two crossbeams is connected by a mounting frame.

3. The lifting device for an ion nitriding furnace according to claim 2, characterized in that, The mounting frame includes a top plate at the top of the crossbeam, a bottom plate at the bottom of the crossbeam, and a side plate connecting the top plate and the bottom plate. The top plate, the bottom plate, and the side plate are fixedly connected, and a top hanging ring is installed on the top of the top plate, with stiffening plates installed on both sides of the top hanging ring.

4. The lifting device for an ion nitriding furnace according to claim 2, characterized in that, The crossbeam is a telescopic crossbeam, and the inside of the telescopic crossbeam is an electric telescopic rod or a hydraulic rod.

5. The lifting device for an ion nitriding furnace according to claim 2, characterized in that, The connector is a chain or a spring. One end of the connector is fixedly connected to the side lifting ring, and the other end is fixedly connected to a shackle. The shackle is connected to the lifting lug of the furnace body through a pin-type sensor.

6. The lifting device for an ion nitriding furnace according to claim 1, characterized in that, The conical guide assembly includes an electric telescopic rod located in the furnace base and a conical guide column installed at the top of the electric telescopic rod. The conical guide column includes a conical head and a guide column. The guide column is fixedly connected to the electric telescopic rod. The conical head and the guide column are integrally formed. The upper diameter of the conical head is smaller than the lower diameter.

7. The lifting device for an ion nitriding furnace according to claim 6, characterized in that, The circumference of the tapered guide column is all inclined, or the side facing the inside of the furnace body is inclined. There is a groove inside the furnace body for placing the electric telescopic rod.

8. The lifting device for an ion nitriding furnace according to claim 6, characterized in that, The top surface of the conical guide column is provided with a buckle, and the displacement sensor is installed on the top surface of the conical guide column through the buckle. There are at least three sets of conical guide components and displacement sensors, and the three sets of conical guide components and displacement sensors are arranged in a ring around the furnace base.

9. The lifting device for an ion nitriding furnace according to claim 1, characterized in that, The lifting device further includes four lifting hydraulic rods, which are mounted on the pulley housing above the crane hook via chains. Each lifting hydraulic rod is connected to a side lifting ring of the lifting device.

10. The lifting device for an ion nitriding furnace according to claim 9, characterized in that, The piston end of the lifting hydraulic rod is connected to a hydraulic rod hook, and the hydraulic rod hook is connected to a side lifting ring.

Images