A vertical support fixture for a continuous furnace

Abstract

This utility model relates to the field of heat treatment technology, specifically to a vertical support fixture for a continuous furnace, comprising: a base assembly and several support assemblies spaced apart on top of it; support column assemblies are detachably connected to the midpoint and four corners of adjacent support assemblies; each support assembly includes a load-bearing plate, with mounting tubes at the midpoint and four corners of the load-bearing plate; several insertion holes are formed in a rectangular array on the load-bearing plate, and limiting insert rods are inserted into each insertion hole. Through the cooperation between the support column assemblies and the load-bearing plate, the fixture can be multi-layered according to the number of workpieces. By inserting support column assemblies into the center and corners of the load-bearing plate, and utilizing the interlocking of arc-shaped limiting blocks and cross-shaped limiting insert parts, precise positioning and stable connection are achieved. The height and number of layers of the fixture can be quickly adjusted to meet the heat treatment requirements of different batches of shaft-type workpieces, not only facilitating loading and unloading but also reducing production costs.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology, and in particular to a vertical support fixture for a continuous furnace. Background Technology

[0002] As a core production line in modern heat treatment industry, continuous furnace lines can fully meet the production needs of large-volume, stable and efficient processes. When heat treating shaft parts, companies usually use a plug-in method for loading to ensure the quality of shaft products. Traditional shaft tooling mainly consists of a material tray, column, load-bearing plate and spacer. The load-bearing plate is in direct contact with the product parts, while the spacer is used to adjust the height of the load-bearing plate.

[0003] When assembling multi-layer load-bearing plates, the spacers must be assembled layer by layer in sequence. However, the columns of traditional shaft-type tooling are long and have an integral structure. This characteristic means that during the assembly of spacers and load-bearing plates, the lifting operation must be carried out one by one from the top of the column. This assembly method not only reduces the efficiency of tooling loading and unloading, but also, after experiencing multiple cycles of alternating hot and cold processes, the long columns are prone to deformation due to the accumulation of thermal stress, resulting in difficulties in subsequent fitting or removal, which in turn affects the stability of the equipment. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a vertical bearing fixture for a continuous furnace, which facilitates the improvement of the loading and unloading efficiency of the fixture, while also improving the deformation resistance of the column.

[0005] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: a vertical support fixture for a continuous furnace is provided, comprising: a chassis assembly and a plurality of support assemblies spaced apart on the chassis, wherein support column assemblies are detachably connected to the midpoint of two adjacent support assemblies and their four corners respectively.

[0006] The support component includes a load-bearing plate, and mounting tubes are respectively provided at the midpoint and four corners of the load-bearing plate. A plurality of insertion holes are provided in a rectangular array on the load-bearing plate, and limit rods are respectively inserted into the insertion holes.

[0007] The support column assembly includes a cross-shaped rib. One end of the cross-shaped rib is connected to a limiting disc, and the other end is connected to a limiting ring. A cross-shaped limiting insertion part is connected to the side of the limiting disc away from the cross-shaped rib. Four arc-shaped limiting blocks in a ring array are connected to the side of the limiting ring away from the cross-shaped rib. A limiting opening is formed between two adjacent arc-shaped limiting blocks. A clearance opening adapted to the inner diameter of the cross-shaped rib is provided at the end near the limiting ring. A cross-shaped limiting rib adapted to the clearance opening is connected to the end of the cross-shaped limiting insertion part away from the limiting disc.

[0008] When the arc-shaped limiting blocks are respectively inserted into the lower mounting tube, the side of the first cross-shaped limiting insertion part is respectively inserted into the corresponding upper limiting port, and the first cross-shaped limiting rib is inserted into the upper clearance port.

[0009] By adopting the above technical solution, the chassis assembly, support assembly, and support column assembly are a separate, detachable combined structure. This allows for flexible adjustment of the quantity and spacing according to actual needs, and also adapts to the assembly of load-bearing plates with different heights and number of layers. The mounting pipe provides a precise installation position for the support column assembly, and the midpoint and corner settings ensure the stability and balance of the load-bearing plate under load. Through the connection with the support column assembly, the weight on the load-bearing plate is evenly transferred to the structure below, ensuring the structural stability of the entire column during load-bearing. Furthermore, the insertion holes contain limiting rods that can position and limit shaft-like workpieces of different sizes, preventing movement, rolling, or collision during heat treatment, ensuring the machining accuracy and quality of the workpiece. The limiting plate prevents the support column assembly from being over-inserted when connected to the upper structure, serving a positioning function. The limiting ring... This component works in conjunction with the structure below to ensure a stable vertical connection of the support column assembly. It also provides support and a positioning reference for the installation of other components. The cross-shaped limiting connector, the arc-shaped limiting block, and the limiting opening work together to ensure precise connection and positioning between the support column assemblies and between the support column assembly and the load-bearing plate. The cross-shaped limiting connector, inserted into the corresponding upper limiting opening, prevents the support column assembly from rotating or shifting horizontally. The arc-shaped limiting block, inserted into the lower mounting tube, further enhances the stability and verticality of the connection. When the arc-shaped limiting block is inserted into the lower mounting tube, the cross-shaped limiting rib simultaneously inserts into the upper clearance opening. This nested structure increases the depth and tightness of the connection, further restricting the relative movement between components and effectively resisting deformation caused by thermal stress, ensuring the smooth insertion and removal of the subsequent load-bearing plate and spacer.

[0010] In a preferred embodiment, the present invention can be further configured as follows: the chassis assembly includes a material tray, the material tray has threaded holes at its midpoint and four corners, and each of the threaded holes is threaded with a column member. Each column member includes a limiting disc and a threaded rod connected to its bottom. The top of the limiting disc is connected to a cross-shaped limiting insertion part, and the top of the cross-shaped limiting insertion part is connected to a cross-shaped limiting rib. When the arc-shaped limiting blocks are inserted into the mounting tube below, the sides of the cross-shaped limiting insertion part are inserted into the corresponding limiting openings above, and the cross-shaped limiting rib is inserted into the clearance opening above.

[0011] By adopting the above technical solution, the threaded hole above the material tray provides a precise installation point for the column component. Through the threaded connection, the column component can be firmly fixed on the material tray, ensuring the stability of the entire chassis assembly structure. At the same time, the second cross-shaped limiting connector can be inserted into the corresponding limiting port above, and the second cross-shaped limiting rib can be inserted into the clearance port above. This nested structure can accurately determine the relative position between each component, ensuring the accurate installation of the column assembly in the vertical and horizontal directions, preventing misalignment, offset, and other problems. It also increases the contact area and connection depth between components, making the connection between each component tighter and stronger, and preventing the column component from rotating after connection. This ensures that the column maintains a fixed orientation during heat treatment, thereby ensuring the positioning accuracy and heat treatment quality of shaft-type workpieces. Furthermore, when the sides of the second cross-shaped limiting connector are respectively inserted into the corresponding limiting ports above, they can effectively restrict the movement of components in the horizontal and vertical directions, ensuring the structural stability of the column during heat treatment.

[0012] In a preferred embodiment, the present invention can be further configured as follows: the limiting insert includes a support plate and an insert rod connected to its bottom, the top of the support plate is connected to an insert rib one, the top of the insert rib one is connected to an insert rib two, the projection of the insert rib two falls into the projection of the insert rib one, and the bottom side of the insert rib one is respectively provided with limiting protrusions connected to the support plate.

[0013] By adopting the above technical solution, the plug-in rod cooperates with the plug-in hole of the load-bearing plate to realize the fixed installation of the limiting plug-in rod on the load-bearing plate, which facilitates the clamping operation of shaft workpieces by workers. Moreover, the first plug-in rod and the second plug-in rod form a multi-layer nested limiting structure, which can position and limit shaft workpieces of different sizes. The limiting protrusion can also prevent the shaft workpiece from directly contacting the support plate, thereby ensuring the positional stability of the shaft workpiece during the heat treatment process.

[0014] In a preferred embodiment, the present invention can be further configured such that the outer circumferential surface of the mounting tube is connected with a plurality of reinforcing ribs at intervals.

[0015] By adopting the above technical solution, the reinforcing ribs increase the rigidity of the pipe wall, making it less prone to denting, deformation or cracking when subjected to these external forces, thereby ensuring the integrity and normal function of the pipe.

[0016] In a preferred embodiment, the present invention can be further configured such that: at least one stress relief port is provided on each side of the load-bearing plate.

[0017] By adopting the above technical solution, the stress relief port provides space for thermal expansion and contraction of the load-bearing plate, allowing it to deform freely when the temperature changes, thereby avoiding problems such as cracking and deformation of the load-bearing plate caused by thermal stress concentration.

[0018] In a preferred embodiment, the present invention can be further configured such that: at least one stress relief port is provided on each side of the material tray.

[0019] By adopting the above technical solution, the material tray will expand and contract with the rapid rise and fall of the ambient temperature. The stress relief port 2 provides space for the material tray to expand and contract, allowing it to deform freely and avoiding cracking and deformation of the material tray due to thermal stress concentration.

[0020] In summary, this utility model includes at least one of the following beneficial technical effects of a vertical support fixture for a continuous furnace:

[0021] 1. The cooperation between the support column assembly and the load-bearing plate allows the tooling to be built in multiple layers according to the number of workpieces. By inserting the support column assembly into the center and corners of the load-bearing plate, and using the interlocking of the arc-shaped limiting block and the cross-shaped limiting insertion part, precise positioning and stable connection can be achieved. The height and number of layers of the tooling can be quickly adjusted to meet the heat treatment requirements of different batches of shaft workpieces. It is not only convenient to load and unload, but also reduces production costs.

[0022] 2. The support column assembly is inserted into the load-bearing plate to form an assembly structure in the form of combined length, which shortens the overall length of the column. Moreover, after repeated hot and cold cycles during the production process, the new type of column is more resistant to deformation, thus solving the problem of the load-bearing plate being unable to be fitted due to column deformation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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, wherein:

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the load-bearing plate of this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the support column assembly of this utility model;

[0027] Figure 4 This is a schematic diagram of the material tray of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the column component of this utility model;

[0029] Figure 6This is a structural schematic diagram of the limiting insert of this utility model.

[0030] In the diagram: 10. Chassis assembly; 20. Support assembly; 30. Support column assembly;

[0031] 11. Material tray; 12. Threaded hole; 13. Column component; 14. Stress relief port two;

[0032] 21. Load-bearing plate; 22. Mounting pipe; 23. Insertion hole; 24. Limiting rod; 25. Reinforcing rib; 26. Stress relief port one;

[0033] 31. Cross-shaped rib; 32. Limiting disc one; 33. Limiting ring; 34. Cross-shaped limiting connector one; 35. Arc-shaped limiting block; 36. Limiting opening; 37. Relief opening; 38. Cross-shaped limiting rib one;

[0034] 131. Limiting disc two; 132. Threaded rod; 133. Cross-shaped limiting connector two; 134. Cross-shaped limiting rib two;

[0035] 241. Support plate; 242. Connecting rod; 243. Connecting rib one; 244. Connecting rib two; 245. Limiting protrusion. Detailed Implementation

[0036] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0037] It should be noted that these figures are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0038] Reference Figure 1-6This utility model discloses a vertical support fixture for a continuous furnace, comprising: a base assembly 10 and a plurality of support assemblies 20 spaced above it; support column assemblies 30 are detachably connected to the midpoint and four corners of adjacent support assemblies 20; each support assembly 20 includes a load-bearing plate 21, with mounting tubes 22 at the midpoint and four corners; a plurality of insertion holes 23 are rectangularly arranged on the load-bearing plate 21, with limiting inserts 24 inserted into each insertion hole 23; a plurality of reinforcing ribs 25 are spaced apart on the outer surface of the mounting tubes 22; and at least one stress relief port 26 is provided on the side of each load-bearing plate 21; each support column assembly 30 includes a cross rib 31, with one end of the cross rib 31 connected to a limiting plate 30. 2. The other end is connected to a limiting ring 33. The side of the limiting disc 32 away from the cross rib 31 is connected to a cross limiting insertion part 34. The side of the limiting ring 33 away from the cross rib 31 is connected to four arc-shaped limiting blocks 35 in a ring array. A limiting opening 36 is formed between two adjacent arc-shaped limiting blocks 35. The end of the cross rib 31 near the limiting ring 33 is provided with a relief opening 37 that matches its inner diameter. The end of the cross limiting insertion part 34 away from the limiting disc 32 is connected to a cross limiting rib 38 that matches the relief opening 37. When the arc-shaped limiting blocks 35 are respectively inserted into the mounting tube 22 below, the side of the cross limiting insertion part 34 is respectively inserted into the corresponding upper limiting opening 36, and the cross limiting rib 38 is inserted into the upper relief opening 37.

[0039] The inner side of the load-bearing plate 21 is grid-like, and the insertion hole 23 is opened at the intersection of the grid on the inner side of the load-bearing plate 21. The end side of the cross-shaped limiting rib 38 is beveled to improve the insertion efficiency of the cross-shaped limiting rib 38 and the clearance port 37. The two adjacent load-bearing plates 21 provide a precise installation position for the support column assembly 30 through the installation tube 22, so that the arc-shaped limiting block 35 is inserted into the installation tube 22, realizing the vertical positioning between the support assemblies 20. At the same time, the cooperation between the cross-shaped limiting insertion part 34 and the limiting port 36, as well as the cooperation between the cross-shaped limiting rib 38 and the clearance port 37, further ensures the precise positioning of the adjacent support assemblies 20 in the horizontal and vertical directions, and supports the load-bearing plate 21 under the support and limitation of the limiting ring 33 and the limiting plate 32. The limiting mechanism allows for detachable connections between components, facilitating assembly and disassembly of the entire fixture. During production, components can be quickly replaced or adjusted according to different needs, improving efficiency and flexibility. Furthermore, the limiting insert 24 can be flexibly adjusted and inserted according to the specifications and quantity of shaft-type workpieces, evenly bearing their load. This ensures uniform stress distribution during heat treatment, preventing deformation due to excessive local stress. Simultaneously, the stress relief port 26 effectively releases thermal stress from temperature changes and mechanical stress from the weight of the workpiece and external forces on the load-bearing plate 21 during heat treatment, preventing stress concentration that could lead to cracking or deformation of the load-bearing plate 21 and ensuring its structural integrity and stability.

[0040] The chassis assembly 10 includes a material tray 11. Threaded holes 12 are provided at the midpoint and four corners of the material tray 11. Column members 13 are threaded into the threaded holes 12. At least one stress relief port 14 is provided on the side of the material tray 11. The column member 13 includes a limiting plate 131 and a threaded rod 132 connected to its bottom. A cross-shaped limiting insertion part 133 is connected to the top of the limiting plate 132. A cross-shaped limiting rib 134 is connected to the top of the cross-shaped limiting insertion part 133. When the arc-shaped limiting blocks 35 are inserted into the mounting tube 22 below, the sides of the cross-shaped limiting insertion part 133 are inserted into the corresponding limiting ports 36 above, and the cross-shaped limiting rib 134 is inserted into the clearance port 37 above.

[0041] The inner side of the material tray 11 is also grid-like, with through holes at the intersections of the grid to release bottom stress. The end of the cross-shaped limiting rib 134 is beveled so that it can be inserted into the relief port 37. The threaded hole 12 on the material tray 11 and the threaded rod 132 cooperate with each other and bear the weight transmitted from the top support plate 21 and shaft workpieces through the limiting plate 131. The cross-shaped limiting insertion part 133 is limited and inserted into the corresponding upper limiting port 36 to play a limiting role. At the same time, the cross-shaped limiting rib 134 and the relief port 37 work together to achieve precise positioning and connection between the chassis assembly 10 and the upper support assembly 20. It also allows the operator to complete the assembly and debugging of the tooling in a short time, reducing the production preparation time.

[0042] The limiting insertion rod 24 includes a support plate 241 and an insertion rod 242 connected to its bottom. The top of the support plate 241 is connected to an insertion rib 1 243, and the top of the insertion rib 1 243 is connected to an insertion rib 244. The projection of the insertion rib 244 falls within the projection of the insertion rib 1 243. The bottom side of the insertion rib 1 243 is provided with limiting protrusions 245 that are connected to the support plate 241.

[0043] The end side of the second insertion rib 244 and the connection part of the first insertion rib 243 are both chamfered to improve the efficiency of inserting shaft workpieces. At the same time, the two are integrally cast. When the workpiece is placed on the support plate 241, the weight of the workpiece can be evenly distributed on the support plate 241. Under the action of the limiting protrusion 245, the workpiece is prevented from directly contacting the support plate 241, preventing indentations or deformation on the workpiece surface due to excessive local stress. Furthermore, by selecting different positions of the insertion holes 23, the layout of the limiting insertion rod 24 on the load-bearing plate 21 can be flexibly adjusted to meet the support requirements of shaft workpieces of different lengths, diameters and shapes. In addition, the stepped structure formed by the first insertion rib 243 and the second insertion rib 244 can not only restrict the movement of the workpiece in the axial direction, but also adapt to shaft workpieces of different sizes, thereby improving the heat treatment quality of shaft workpieces.

[0044] The implementation principle of this embodiment is as follows: During use, align the threaded rod 132 of the column member 13 with the threaded holes 12 at the center point and four corners of the material tray 11, and install it to ensure a firm installation. Then, pick up the first load-bearing tray 21, align its mounting tube 22 with the cross-shaped limiting insertion part 133 at the top of the column member 13 on the chassis assembly 10, and slowly lower the load-bearing tray 21 so that the mounting tube 22 fits onto the cross-shaped limiting insertion part 133. Select appropriate positions at the center and four corners of the load-bearing tray 21 to insert the support column assembly 30. Insert the arc-shaped limiting block 35 of the support column assembly 30 into the corresponding mounting tube 22 below the load-bearing tray 21, and adjust the position of the support column assembly 30 so that the limiting opening 36 between the arc-shaped limiting blocks 35 and the cross-shaped limiting insertion part 133 engage with each other to achieve initial limiting. Then, according to the required heat treatment of the shaft workpiece... Depending on the size and type of the workpiece, select different insertion holes 23 on the load-bearing plate 21, insert the insertion rod 242 of the limiting insertion rod 24 into the selected insertion hole 23, and then put the shaft workpiece on the limiting insertion rod 24, so that the workpiece is placed on the support plate 241. Then pick up the second load-bearing plate 21, align its mounting tube 22 with the cross limiting insertion part 34 on the top of the already installed support column assembly 30, and slowly lower the load-bearing plate 21 so that the mounting tube 22 is successively fitted onto the corresponding cross limiting insertion part 34. Check the connection between the support column assembly 30 and the load-bearing plate 21 again to ensure that the arc-shaped limiting block 35 and the cross limiting insertion part 34 fit well. If multiple workpieces need to be processed, continue to repeat the above assembly steps of the support column assembly 30 and the load-bearing plate 21 according to the number of workpieces, and build the tooling structure layer by layer to meet different production needs.

[0045] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A vertical support fixture for a continuous furnace, characterized in that, include: The chassis assembly (10) and a number of support assemblies (20) spaced above it, with support column assemblies (30) detachably connected to the midpoint and four corners of two adjacent support assemblies (20); The support component (20) includes a load-bearing plate (21), and the load-bearing plate (21) is provided with mounting tubes (22) at its midpoint and four corners. The load-bearing plate (21) has a rectangular array of several insertion holes (23), and limit plugs (24) are inserted into the insertion holes (23). The support column assembly (30) includes a cross rib (31). One end of the cross rib (31) is connected to a limiting disc (32), and the other end is connected to a limiting ring (33). The side of the limiting disc (32) away from the cross rib (31) is connected to a cross-shaped limiting insertion part (34). The side of the limiting ring (33) away from the cross rib (31) is connected to four arc-shaped limiting blocks (35) arranged in a ring. A limiting opening (36) is formed between two adjacent arc-shaped limiting blocks (35). The end of the cross rib (31) near the limiting ring (33) has a clearance opening (37) that matches its inner diameter. The end of the cross-shaped limiting insertion part (34) away from the limiting disc (32) is connected to a cross-shaped limiting rib (38) that matches the clearance opening (37). When the arc-shaped limiting blocks (35) are respectively inserted into the mounting tube (22) below, the side of the cross-shaped limiting insertion part (34) is respectively inserted into the corresponding limiting port (36) above, and the cross-shaped limiting rib (38) is inserted into the clearance port (37) above.

2. The vertical support fixture for a continuous furnace according to claim 1, characterized in that, The chassis assembly (10) includes a material tray (11), with threaded holes (12) at the midpoint and four corners of the material tray (11). Column members (13) are threaded into the threaded holes (12). The column member (13) includes a limiting plate (131) and a threaded rod (132) connected to its bottom. A cross-shaped limiting insertion part (133) is connected to the top of the limiting plate (132). A cross-shaped limiting rib (134) is connected to the top of the cross-shaped limiting insertion part (133). When the arc-shaped limiting blocks (35) are inserted into the mounting tube (22) below, the sides of the cross-shaped limiting insertion part (133) are inserted into the corresponding limiting openings (36) above, and the cross-shaped limiting rib (134) is inserted into the clearance opening (37) above.

3. The vertical support fixture for a continuous furnace according to claim 1, characterized in that, The limiting insert (24) includes a support plate (241) and an insert rod (242) connected to its bottom. The top of the support plate (241) is connected to an insert rib one (243), and the top of the insert rib one (243) is connected to an insert rib two (244). The projection of the insert rib two (244) falls within the projection of the insert rib one (243). The bottom side of the insert rib one (243) is provided with limiting protrusions (245) connected to the support plate (241).

4. The vertical support fixture for a continuous furnace according to claim 1, characterized in that, The outer surface of the mounting tube (22) is connected with several reinforcing ribs (25) at intervals.

5. The vertical support fixture for a continuous furnace according to claim 1, characterized in that, The side of the load-bearing plate (21) is provided with at least one stress relief port (26).

6. The vertical support fixture for a continuous furnace according to claim 2, characterized in that, The material tray (11) has at least one stress relief port (14) on its side.

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