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CN-224230714-U - Novel heat-resistant tray for pit furnace

CN224230714UCN 224230714 UCN224230714 UCN 224230714UCN-224230714-U

Abstract

The utility model relates to the field of heat treatment trays, in particular to a novel heat-resistant tray for a pit furnace, which comprises a sleeving structure and a bracket structure connected to the outer side of the sleeving structure, wherein the bracket structure comprises a plurality of main ribs in an annular array, a plurality of auxiliary ribs are respectively connected between two adjacent main ribs, the auxiliary ribs are arranged at intervals along the radial direction of the sleeving structure and sequentially increase in length, the auxiliary ribs along the circumferential direction of the sleeving structure are respectively staggered, and a plurality of inner grooves with equal wall thickness are respectively arranged at intervals on two sides of the main ribs. The main ribs and the auxiliary ribs are uniformly distributed and cooperate, so that the bearing capacity and the structural stability of the tray are further enhanced, the deformation and damage risk of the tray under the high-temperature and heavy-load conditions are reduced, the S-shaped auxiliary ribs are arranged at intervals along the radial direction of the sleeving structure, the lengths of the auxiliary ribs are sequentially increased, the supporting strength of the outer edge can be gradually enhanced by adapting to the radius of the tray, the stress concentration of the outer edge caused by centrifugal force is compensated, and the deformation or fracture of a high Wen Xiatuo tray is prevented.

Inventors

  • XU QINGCHUN
  • XU ZICHUN

Assignees

  • 江苏金鼎冶化机械制造有限公司

Dates

Publication Date
20260512
Application Date
20250515

Claims (5)

  1. 1. The novel heat-resistant tray for the pit furnace is characterized by comprising a sleeving structure (10) and a bracket arm structure (20) connected to the outer side of the sleeving structure, wherein the bracket arm structure (20) comprises a plurality of main ribs (21) in an annular array, a plurality of auxiliary ribs (22) are respectively connected between two adjacent main ribs (21), the auxiliary ribs (22) are arranged at intervals along the radial direction of the sleeving structure (10) and sequentially increase in length, the auxiliary ribs (22) along the circumferential direction of the sleeving structure (10) are respectively staggered, a plurality of inner grooves (23) with equal wall thickness are respectively arranged at intervals on two sides of the main ribs (21), the inner grooves (23) are respectively positioned between two adjacent auxiliary ribs (22), and the corresponding inner grooves (23) are correspondingly arranged at the end parts of the auxiliary ribs (22) distributed along the circumferential direction of the sleeving structure (10).
  2. 2. The novel heat-resistant tray for pit furnace according to claim 1, wherein the sleeving structure (10) comprises a sleeving main body (11) with an internal spline structure, a plurality of connecting ribs (12) are annularly arranged on the outer side of the sleeving main body (11), the novel heat-resistant tray further comprises a connecting plate (13), the outer side of the connecting plate (13) is connected with a main rib (21), the inner side of the connecting plate is connected with the connecting ribs (12), a plurality of plate holes (14) are annularly arranged on the connecting plate (13), and the plate holes (14) are respectively close to the outer side of the connecting plate (13).
  3. 3. The novel heat-resistant tray for pit furnace according to claim 1, wherein a plurality of reinforcing ribs (24) are respectively arranged at intervals and symmetrically on opposite sides of the main ribs (21), and the reinforcing ribs (24) are respectively arranged close to the sleeving structure (10) and are respectively connected with the corresponding auxiliary ribs (22).
  4. 4. A novel heat-resistant tray for shaft furnace according to claim 1, wherein the auxiliary ribs (22) are provided with at least two stress release holes (25) at intervals.
  5. 5. A new heat resistant tray for shaft furnace according to claim 1, characterized in that the cross section of the secondary ribs (22) is S-shaped, respectively.

Description

Novel heat-resistant tray for pit furnace Technical Field The utility model relates to the field of heat treatment trays, in particular to a novel heat-resistant tray for a pit furnace. Background The pit furnace is novel industrial heating equipment adopting vertical structural design, is widely applied to a plurality of industrial fields such as metal heat treatment, ceramic sintering, powder metallurgy and the like, has the core advantages that efficient heating is realized through a vertical hearth structure, and is particularly suitable for processing long-shaft parts and batch workpieces. However, the tray and workpiece bearing tool matched with the traditional pit furnace have obvious technical defects, the main tray structure in the market at present adopts a split type welding process or realizes modularized connection through bolts, when the design is used for a long time in a high-temperature environment, materials are easy to generate fatigue damage due to repeated thermal cycling, so that the structure is irreversibly deformed, and especially in the application scene of the composite material with unmatched thermal expansion coefficients, local thermal stress concentration can cause structural distortion and even cracking, and the service life of the tray is seriously influenced. Disclosure of utility model The utility model mainly solves the technical problem of providing a novel heat-resistant tray for a pit furnace, which is convenient for reducing the fatigue damage of the tray, simultaneously reduces the risks of deformation, distortion and cracking of the tray, and prolongs the service life of the tray. In order to solve the technical problems, the novel heat-resistant tray for the pit furnace comprises a sleeving structure and a bracket structure connected to the outer side of the sleeving structure, wherein the bracket structure comprises a plurality of main ribs in an annular array, a plurality of auxiliary ribs are respectively connected between two adjacent main ribs, the auxiliary ribs are arranged at intervals along the radial direction of the sleeving structure and sequentially increase in length, the auxiliary ribs along the circumferential direction of the sleeving structure are respectively staggered, a plurality of inner grooves with equal wall thickness are respectively arranged at intervals on two sides of the main ribs, the inner grooves are respectively positioned between two adjacent auxiliary ribs, and the corresponding inner grooves are correspondingly arranged with the end parts of the auxiliary ribs distributed along the circumferential direction of the sleeving structure. Through adopting above-mentioned technical scheme, the suit structure is used for assembling with pit furnace center pin, ensure tray overall stability, simultaneously provide the installation basis for the bracket arm structure, the main muscle provides radial and circumferential main holding power, disperse work piece weight, and its even atress structure avoids local overload, annular overall arrangement adaptation pit furnace cylindrical cavity, the space utilization is promoted, the auxiliary muscle progressively strengthens outer fringe holding strength along with the tray increase, with the outer fringe stress concentration that the compensation centrifugal force leads to, prevent high Wen Xiatuo dish deformation or fracture, the crisscross thermal stress resonance effect that the arrangement produced of auxiliary muscle circumference can break, further improve structure torsional rigidity and bear the weight of the effect, and disperse the local stress that thermal expansion uneven led to, reduce the fracture risk, the internal groove of waiting wall thickness then keeps structural strength when alleviateing the dead weight, avoid appearing the uneven phenomenon of cooling shrinkage simultaneously, internal groove and auxiliary muscle tip correspond still can strengthen the joint shear resistance, prevent the connection inefficacy that high temperature creep leads to, reduce welding or bolt fastening demand. The utility model can be further configured in a preferred example that the sleeve structure comprises a sleeve main body with an internal spline structure, wherein a plurality of connecting ribs are annularly arranged on the outer side of the sleeve main body, the sleeve structure further comprises a connecting plate, the outer side of the connecting plate is connected with the main ribs, the inner side of the connecting plate is connected with the connecting ribs, a plurality of plate holes are annularly arranged on the connecting plate, and the plate holes are respectively arranged close to the outer side of the connecting plate. Through adopting above-mentioned technical scheme, suit main part internal spline structure and pit furnace center pin precision fit realize axial positioning to prevent that the tray from rotating, the stationarity when improving its use, connecting rib annu