Steam curing cushion frame capable of being freely adjusted according to temperature change

Abstract

The utility model discloses a steam-curing cushion frame capable of being freely adjusted according to temperature change, which relates to the technical field of steam-curing cushion frames and comprises a first cushion plate and a second cushion plate, the first cushion plate and the second cushion plate are oppositely arranged, and an adjusting rod, a first supporting structure and a second supporting structure are arranged between the first cushion plate and the second cushion plate. The two ends of the adjusting rod are used for being connected with the first base plate and the second base plate, the adjusting rod penetrates through the first supporting structure and the second supporting structure, the adjusting rod is a lead screw and is in threaded connection with the first supporting structure and the second supporting structure, the first supporting structure is welded to the first base plate, and a gap exists between the first supporting structure and the second base plate. The second supporting structure is welded to the second base plate, and a gap exists between the second supporting structure and the first base plate. The steam-curing base plate solves the problem that the service life of the steam-curing base plate is too short due to the fact that the deformation quantity of the steam-curing base plate is too large due to the fact that the temperature difference between the inside and the outside of the still kettle is too large.

Description

TECHNICAL FIELD

[0001] The utility model relates to a steam curing pad frame technical field, especially to a steam curing pad frame that can be freely adjusted according to temperature change. BACKGROUND

[0002] The existing steam curing pad frame is generally fixed structure, and lacks the adaptability to temperature change. In the high-temperature steam curing stage of the steam autoclave, the temperature will quickly rise to 195 DEG C, and then quickly drop back to room temperature. Because these pad frames cannot self-adapt to temperature change, the following several main shortcomings are caused.

[0003] Deformation caused by thermal expansion and cold shrinkage: at high temperature, the pad frame cannot adapt to the expansion of the material due to the lack of elasticity, which eventually leads to the deformation of the pad frame. This deformation not only affects its supporting ability in the steam curing process, but also may cause the production efficiency to decrease.

[0004] Increased physical damage: the fixed pad frame, when rapidly cooling, will cause the structural stress to increase due to the unrelieved shrinkage pressure, which increases the risk of physical damage, thereby affecting the service life and safety of the equipment.

[0005] High frequency of maintenance and replacement: due to the above factors, the existing steam curing pad frame is prone to damage, even breakage, which increases the frequency of maintenance and replacement, which not only increases the operating cost, but also interferes with the continuity of the production process.

[0006] Reduced production efficiency: due to the drawbacks of the existing pad frame, the stability and consistency of the overall steam curing process will be affected, thereby reducing the production efficiency and the quality of the final product. SUMMARY

[0007] The utility model discloses a steam curing pad frame that can be freely adjusted according to temperature change, which solves the problem of short service life of the steam curing pad plate caused by the large deformation of the steam curing pad plate due to the large temperature difference between the inside and outside of the steam autoclave.

[0008] To achieve the above-mentioned purpose, the utility model provides the following scheme:

[0009] The utility model provides a can adjust freely according to temperature change's steaming and curing pad frame, include: first pad and second pad, first pad with second pad opposite setting, first pad with second pad between being provided with adjusting lever, first support structure and second support structure, the both ends of adjusting lever all be used for with first pad and second pad connection, adjusting lever passes first support structure with second support structure, with adjusting lever respectively with first support structure and second support structure screw connection, first support structure with first pad connection, there is gap between first support structure with second pad, second support structure with second pad connection, there is gap between second support structure with first pad.

[0010] Preferably, the adjusting rod is at least two, at least two adjusting rods are arranged in parallel; the length direction of the adjusting rod is parallel to the first pad and the second pad respectively, and the adjusting rod is arranged vertically to the first support structure or the second support structure.

[0011] Preferentially, the first support structure and the second support structure are arranged alternately, and the first support structure and the second support structure are arranged in parallel.

[0012] Preferentially, the first support structure and the second support structure are the same structure, and each of the first support structure and the second support structure comprises a first bottom plate, a first web, a second web, a first wing plate and a second wing plate; the first web and the second web are extended from the both ends of the first bottom plate to the same direction, and the first web and the second web are perpendicular to the first bottom plate; the first wing plate is extended from the end of the first web away from the first bottom plate to the first wing plate in the direction from the second web to the first web; the second wing plate is extended from the end of the second web away from the first bottom plate to the second wing plate in the direction from the first web to the second web; the first wing plate and the second wing plate are parallel to the first bottom plate; the first wing plate and the second wing plate of the first support structure are connected to the first pad, and the first bottom plate of the first support structure has a gap with the second pad; the first wing plate and the second wing plate of the second support structure are connected to the second pad, and the first bottom plate of the second support structure has a gap with the first pad.

[0013] Preferentially, the first support structure is provided with a first threaded hole, the second support structure is provided with a second threaded hole, and the adjusting rod is screw-connected to the first threaded hole and the second threaded hole respectively.

[0014] Preferably, two ends of the adjusting rod are connected with a fixing structure respectively, the fixing structure is U-shaped, the fixing structure comprises a first fixing part, a second fixing part and a third fixing part, the first fixing part and the second fixing part are oppositely arranged, the first fixing part is connected with the first backing plate, the second fixing part is connected with the second backing plate, one end of the adjusting rod passes through one of the third fixing parts and is limited by a limiting structure, the other end of the adjusting rod passes through the other third fixing part and is locked by a nut.

[0015] Preferably, a third supporting structure and a fourth supporting structure are further included, the third supporting structure and the fourth supporting structure are arranged in parallel, the third supporting structure and the fourth supporting structure are both located between the first backing plate and the second backing plate, the adjusting rod passes through the third supporting structure and the fourth supporting structure, and the adjusting rod is threadedly connected with the third supporting structure and the fourth supporting structure respectively, the third supporting structure is connected with the first backing plate, there is a gap between the third supporting structure and the second backing plate, the fourth supporting structure is connected with the second backing plate, and there is a gap between the second supporting structure and the fourth backing plate.

[0016] Preferably, the third supporting structure and the fourth supporting structure are the same in structure, and each of the third supporting structure and the fourth supporting structure comprises a second bottom plate, a third web plate, a fourth web plate, a third wing plate and a fourth wing plate, two ends of the second bottom plate extend the third web plate and the fourth web plate in the same direction, and the third web plate and the fourth web plate are both perpendicular to the second bottom plate, one end of the third web plate away from the second bottom plate extends the third wing plate in a direction from the third web plate to the fourth web plate, one end of the fourth web plate away from the second bottom plate extends the fourth wing plate in a direction from the fourth web plate to the third web plate, and the third wing plate and the fourth wing plate are both parallel to the second bottom plate; the third wing plate and the fourth wing plate of the third supporting structure are both connected with the first backing plate, and there is a gap between the second bottom plate of the third supporting structure and the second backing plate; the third wing plate and the fourth wing plate of the fourth supporting structure are both connected with the second backing plate, and there is a gap between the fourth supporting structure and the first backing plate.

[0017] Preferably, a third threaded hole is formed in the third supporting structure, a fourth threaded hole is formed in the fourth supporting structure, and the adjusting rod is threadedly connected with the third threaded hole and the fourth threaded hole respectively.

[0018] Preferably, a first reinforcing structure and a second reinforcing structure are further included, both of which are located on both sides of the first and second pads, and are arranged alternately on both sides of the first and second pads, the first reinforcing structure is used to connect with the first pad, and there is a gap between the first reinforcing structure and the second pad, the second reinforcing structure is used to connect with the second pad, and there is a gap between the second reinforcing structure and the first pad.

[0019] The utility model discloses the following technical effects are obtained relative to the prior art:

[0020] Self-adapting temperature change: the utility model discloses the telescopic first support structure and second support structure are driven by the adjusting rod, and then drive the telescopic first pad and second pad, so that the steaming and curing pad frame can adjust itself according to the rapid change of the temperature in the autoclave, ensure that proper shape and supporting force are maintained when high-temperature expansion and cooling shrinkage, and effectively avoid the deformation problem caused by the fixed structure.

[0021] Reduce physical damage: the utility model discloses the structural stress caused by thermal expansion and cold shrinkage is reduced significantly by the adjusting rod, reduces the physical damage of equipment, and improves the durability of the steaming and curing pad frame.

[0022] Prolong service life: since physical damage and stress concentration are effectively reduced, the steaming and curing pad frame of the utility model can withstand longer high-temperature use compared with the prior art, greatly improves its service life, and reduces the frequency and related cost of replacement and maintenance.

[0023] Improve production efficiency: by improving the reliability of the equipment and reducing the maintenance cost, the utility model will help to improve the stability of the whole steaming and curing process, ultimately improve the production efficiency and product quality, and help enterprises to maintain competitiveness in the fierce market.

[0024] Wide applicability: the utility model not only applies to the fiber cement industry, but also can play a role in other industries that need to withstand high temperature and temperature fluctuation, widen its application range, and increase the market value of the product.

[0025] The utility model improves the adaptability to temperature change, significantly reduces the problems caused by thermal expansion and cold shrinkage, thereby reducing physical damage, prolonging service life, improving production efficiency, and meeting the higher demands of modern industrial production on equipment stability and economy. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0027] Figure 1 The axial view of the steam curing pad frame which can be freely adjusted according to temperature change of the present application;

[0028] Figure 2 The plan view of the steam curing pad frame which can be freely adjusted according to temperature change of the present application;

[0029] Figure 3 The axial view of the steam curing pad frame which can be freely adjusted according to temperature change of the present application (remove the first pad plate, the second pad plate, the first reinforcing structure and the second reinforcing structure);

[0030] Figure 4 The side view of Figure 3 ;

[0031] Figure 5 The local enlarged view of A of Figure 3 ;

[0032] Figure 6 The local enlarged view of B of Figure 3 ;

[0033] Figure 7 The local enlarged view of C of Figure 3 ;

[0034] Figure 8 The local enlarged view of D of Figure 3 ;

[0035] Figure 9 The axial view of the first supporting structure of the present application;

[0036] Figure 10 The axial view of the third supporting structure of the present application;

[0037] Figure 11 The side view of the first supporting structure or the second supporting structure of the present application;

[0038] Figure 12 The side view of the third supporting structure or the fourth supporting structure of the present application;

[0039] Figure 13 The side view of the fixing structure of the present application;

[0040] In the figure: 1 - the first pad plate, 2 - the second pad plate, 3 - the adjusting rod, 4 - the first support structure, 5 - the second support structure, 6 - the first bottom plate, 7 - the first web plate, 8 - the second web plate, 9 - the first wing plate, 10 - the second wing plate, 11 - the first threaded hole, 12 - the fixed structure, 13 - the first fixed part, 14 - the second fixed part, 15 - the third fixed part, 16 - the limiting structure, 17 - the nut, 18 - the third support structure, 19 - the fourth support structure, 20 - the second bottom plate, 21 - the third web plate, 22 - the fourth web plate, 23 - the third wing plate, 24 - the fourth wing plate, 25 - the third threaded hole, 26 - the first reinforcing structure, 27 - the second reinforcing structure. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the utility model.

[0042] The utility model discloses a kind of steaming pad racks that can be freely adjusted according to temperature change, solve the problem that the steaming pad plate is too short because of the steaming pad plate deformation amount too large caused by temperature difference too large in steaming autoclave inside and outside, which leads to the service life of steaming pad plate.

[0043] To make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0044] As Figures 1 to 13As shown, the embodiment provides a steam curing pad frame which can be freely adjusted according to temperature changes, comprising: a first pad plate 1 and a second pad plate 2, the first pad plate 1 and the second pad plate 2 are both steel plates, the first pad plate 1 and the second pad plate 2 are arranged opposite and parallel, an adjusting rod 3, a first support structure 4 and a second support structure 5 are arranged between the first pad plate 1 and the second pad plate 2, both ends of the adjusting rod 3 are used for connecting with the first pad plate 1 and the second pad plate 2, the adjusting rod 3 passes through the first support structure 4 and the second support structure 5, the adjusting rod 3 is a lead screw, the adjusting rod 3 is threadedly connected with the first support structure 4 and the second support structure 5 respectively, the first support structure 4 is welded with the first pad plate 1, there is a gap between the first support structure 4 and the second pad plate 2, the second support structure 5 is welded with the second pad plate 2, and there is a gap between the second support structure 5 and the first pad plate 1. The embodiment can adapt to the rapid change of the temperature in the autoclave through the adjusting rod 3, the first support structure 4 and the second support structure 5, so that the steam curing pad frame can freely stretch and shrink when expanding at high temperature, and can adjust the shrinkage when cooling, thereby achieving the purposes of reducing physical damage, prolonging service life and improving production efficiency.

[0045] Specifically, in the embodiment, the adjusting rod 3 is at least two, and the at least two adjusting rods 3 are arranged in parallel; the adjusting rod 3 is parallel to the length direction of the first pad plate 1 and the second pad plate 2 respectively, and the adjusting rod 3 is arranged perpendicularly to the first support structure 4 or the second support structure 5.

[0046] In the embodiment, the first support structure 4 and the second support structure 5 are arranged alternately and in parallel.

[0047] In the embodiment, the first support structure 4 and the second support structure 5 are the same in structure, and both the first support structure 4 and the second support structure 5 comprise a first bottom plate 6, a first web plate 7, a second web plate 8, a first wing plate 9 and a second wing plate 10, both ends of the first bottom plate 6 extend the first web plate 7 and the second web plate 8 in the same direction, and both the first web plate 7 and the second web plate 8 are perpendicular to the first bottom plate 6, one end of the first web plate 7 away from the first bottom plate 6 extends the first wing plate 9 in the direction from the second web plate 8 to the first web plate 7, one end of the second web plate 8 away from the first bottom plate 6 extends the second wing plate 10 in the direction from the first web plate 7 to the second web plate 8, and both the first wing plate 9 and the second wing plate 10 are parallel to the first bottom plate 6; the first wing plate 9 and the second wing plate 10 of the first support structure 4 are welded with the first pad plate 1, and there is a gap between the first bottom plate 6 of the first support structure 4 and the second pad plate 2; the first wing plate 9 and the second wing plate 10 of the second support structure 5 are welded with the second pad plate 2, and there is a gap between the first bottom plate 6 of the second support structure 5 and the first pad plate 1. The first support structure 4 and the second support structure 5 can be fixed with the first pad plate 1 and the second pad plate 2 respectively.

[0048] In the embodiment, the first web 7 and the second web 8 of the first support structure 4 are provided with first threaded holes 11, the first web 7 and the second web 8 of the second support structure 5 are provided with second threaded holes, and the adjusting rod 3 is respectively screwed with the first threaded holes 11 and the second threaded holes.

[0049] In the embodiment, the two ends of the adjusting rod 3 are respectively connected with a fixing structure 12, the fixing structure 12 is in a U shape, the opening of the fixing structure 12 is outwardly arranged, the fixing structure 12 comprises a first fixing part 13, a second fixing part 14 and a third fixing part 15, the first fixing part 13 and the second fixing part 14 are oppositely arranged, the first fixing part 13 is welded with the first pad 1, the second fixing part 14 is welded with the second pad 2, one end of the adjusting rod 3 passes through one third fixing part 15 and is limited by a limiting structure 16, the other end of the adjusting rod 3 passes through another third fixing part 15 and is locked by a nut 17. The fixing structure 12 provides a hoisting point for the steam curing pad frame and supports the adjusting rod 3.

[0050] The embodiment further comprises a third support structure 18 and a fourth support structure 19, the third support structure 18 and the fourth support structure 19 are arranged in parallel, the third support structure 18 and the fourth support structure 19 are both located between the first pad 1 and the second pad 2, the adjusting rod 3 passes through the third support structure 18 and the fourth support structure 19, and the adjusting rod 3 is respectively screwed with the third support structure 18 and the fourth support structure 19, the third support structure 18 is connected with the first pad 1, there is a gap between the third support structure 18 and the second pad 2, the fourth support structure 19 is connected with the second pad 2, and there is a gap between the fourth support structure 19 and the first pad 1.

[0051] In the embodiment, the third support structure 18 and the fourth support structure 19 are identical in structure, and each of the third support structure 18 and the fourth support structure 19 comprises a second bottom plate 20, a third web plate 21, a fourth web plate 22, a third wing plate 23 and a fourth wing plate 24. The two ends of the second bottom plate 20 extend in the same direction to the third web plate 21 and the fourth web plate 22, and the third web plate 21 and the fourth web plate 22 are perpendicular to the second bottom plate 20. The end of the third web plate 21 away from the second bottom plate 20 extends in the direction from the third web plate 21 to the fourth web plate 22 to the third wing plate 23, and the end of the fourth web plate 22 away from the second bottom plate 20 extends in the direction from the fourth web plate 22 to the third web plate 21 to the fourth wing plate 24. The third wing plate 23 and the fourth wing plate 24 are parallel to the second bottom plate 20, and there is a gap between the third wing plate 23 and the fourth wing plate 24. The third wing plate 23 and the fourth wing plate 24 of the third support structure 18 are connected with the first pad plate 1, and there is a gap between the second bottom plate 20 of the third support structure 18 and the second pad plate 2. The third wing plate 23 and the fourth wing plate 24 of the fourth support structure 19 are connected with the second pad plate 2, and there is a gap between the second bottom plate 20 of the fourth support structure 19 and the first pad plate 1. When thermal expansion and contraction or extrusion occurs, the third support structure 18 and the fourth support structure 19 can absorb deformation, reducing the influence of temperature change and extrusion on the first pad plate 1 and the second pad plate 2.

[0052] In the embodiment, the third web plate 21 and the fourth web plate 22 of the third support structure 18 are provided with third threaded holes 25, and the third web plate 21 and the fourth web plate 22 of the fourth support structure 19 are provided with fourth threaded holes. The adjusting rod 3 is threadedly connected with the third threaded holes 25 and the fourth threaded holes respectively.

[0053] In the embodiment, the third support structure 18 and the fourth support structure 19 are alternately arranged, and each of the third support structure 18 and the fourth support structure 19 is arranged in parallel with the first support structure 4.

[0054] In the embodiment, the first support structure 4 and the third support structure 18 are alternately arranged, and the second support structure 5 and the fourth support structure 19 are alternately arranged. For example, between the first pad plate 1 and the second pad plate 2, the first support structure 4, the second support structure 5, the third support structure 18 and the fourth support structure 19 can be arranged in the following manner: first support structure 4-second support structure 5-third support structure 18-fourth support structure 19 structure-first support structure 4-second support structure 5-third support structure 18-fourth support structure 19 structure ···

[0055] In the embodiment, the first support structure 4 and the second support structure 5 are in the shape of Ω, and the third support structure 18 and the fourth support structure 19 are in the shape of C, so that the overall structural strength is high, the first base plate 1 and the second base plate 2 can be effectively supported, and the influence on the first base plate 1 and the second base plate 2 can be reduced when the temperature changes and external force is applied.

[0056] The embodiment also includes a first reinforcing structure 26 and a second reinforcing structure 27, the first reinforcing structure 26 and the second reinforcing structure 27 are angle steels, the first reinforcing structure 26 and the second reinforcing structure 27 are located on both sides of the first base plate 1 and the second base plate 2, and on both sides of the first base plate 1 and the second base plate 2, the first reinforcing structure 26 and the second reinforcing structure 27 are alternately arranged, the first reinforcing structure 26 is used for welding with the first base plate 1, there is a gap between the first reinforcing structure 26 and the second base plate 2, the second reinforcing structure 27 is used for welding with the second base plate 2, and there is a gap between the second reinforcing structure 27 and the first base plate 1.

[0057] The structures in the embodiment are all steel structures. When the embodiment enters the autoclave steaming stage, the temperature in the autoclave will change from room temperature to 195 degrees and then to room temperature within 12 hours. The large change in temperature will cause thermal expansion and contraction of objects. When the temperature is high, the adjusting rod 3 is elongated, which drives the first support structure 4, the second support structure 5, the third support structure 18 and the fourth support structure 19 to expand, and then drives the first base plate 1 and the second base plate 2 to expand. When the temperature decreases, the adjusting rod 3 contracts, which also drives the first support structure 4, the second support structure 5, the third support structure 18 and the fourth support structure 19 to contract, and then drives the first base plate 1 and the second base plate 2 to contract. That is, the adjusting rod 3 can release the expansion amount at high temperature, and also release the amount during the cooling and contraction process through the adjustment of the adjusting rod 3, so as to reduce the physical damage to the steaming pad frame and prolong the service life. Moreover, if there is a curved part on the surface of the first base plate 1 and the second base plate 2, the first base plate 1 and the second base plate 2 can be separated after the adjusting rod 3 is removed, which facilitates the repair of the curved part of the first base plate 1 or the second base plate 2.

[0058] The unique telescopic structure formed by the adjusting rod 3, the first support structure 4, the second support structure 5, the third support structure 18 and the fourth support structure 19 can automatically adapt to temperature changes, effectively solve the problem of thermal expansion and cold contraction of materials in high-temperature environments, and ensure the stability of the steaming process. The adjusting rod 3 is used to accurately control the telescopic range of the steaming pad frame, allowing flexible adjustment during thermal expansion and cooling contraction, thereby reducing physical damage caused by temperature changes. By reducing the impact of temperature changes on the steaming pad frame, the service life is significantly extended, the frequency of maintenance and replacement is reduced, and operating costs are reduced. The present embodiment is not limited to the fiber cement industry and is also applicable to other industrial scenarios that require high temperature and temperature fluctuations, increasing market application value. By improving the reliability and stability of the equipment, the entire steaming process is optimized, ultimately improving production efficiency and product quality, allowing the equipment to operate continuously and stably in high-temperature conditions. The selection of materials and structures in the design of the present embodiment takes into account the fatigue resistance under long-term high-temperature use, making it more suitable for long-term industrial applications. The overall design of the present embodiment takes into account the mechanical properties in high-temperature environments, ensuring that the steaming pad frame has good load-bearing capacity and stability in high-temperature and variable working environments.

[0059] The principles and implementation methods of the present application are described in the specific examples in the present application, and the above examples are only used to help understand the method and core idea of the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there will be changes in specific implementation methods and application scope. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A steaming pad frame which can be freely adjusted according to temperature changes, characterized in that: The utility model relates to a kind of adjustable support structure, including: First backing plate and second backing plate, the first backing plate and the second backing plate are oppositely arranged, adjusting rod, first support structure and second support structure are arranged between the first backing plate and the second backing plate, both ends of the adjusting rod are used to be connected with the first backing plate and the second backing plate, the adjusting rod passes through the first support structure and the second support structure, and the adjusting rod is respectively screwed with the first support structure and the second support structure, the first support structure is connected with the first backing plate, there is gap between the first support structure and the second backing plate, the second support structure is connected with the second backing plate, there is gap between the second support structure and the first backing plate.

2. The steaming pad rack according to claim 1, wherein: The adjusting rod is at least two, at least two adjusting rods are arranged in parallel;The adjusting rod is parallel with the length direction of the first backing plate and the second backing plate respectively, and the adjusting rod is arranged vertically with the first support structure or the second support structure.

3. The steaming pad rack capable of being freely adjusted according to temperature changes according to claim 1, wherein: The first support structure and the second support structure are alternately arranged, and the first support structure and the second support structure are arranged in parallel.

4. The steaming pad frame capable of freely adjusting according to temperature changes according to claim 1, wherein: The first support structure and the second support structure are the same structure, and the first support structure and the second support structure each include a first bottom plate, a first web, a second web, a first wing plate and a second wing plate, both ends of the first bottom plate extend out of the first web and the second web in the same direction, and the first web and the second web are perpendicular to the first bottom plate, one end of the first web away from the first bottom plate extends out of the first wing plate in the direction from the second web to the first web, one end of the second web away from the first bottom plate extends out of the second wing plate in the direction from the first web to the second web, and the first wing plate and the second wing plate are parallel to the first bottom plate. The first wing plate and the second wing plate of the first support structure are connected with the first backing plate, and there is gap between the first bottom plate of the first support structure and the second backing plate. The first wing plate and the second wing plate of the second support structure are connected with the second backing plate, and there is gap between the first bottom plate of the second support structure and the first backing plate.

5. The steaming pad rack according to claim 1, wherein: First threaded hole is formed on the first support structure, second threaded hole is formed on the second support structure, and the adjusting rod is screwed with the first threaded hole and the second threaded hole respectively.

6. The steaming pad rack according to claim 1, wherein: Both ends of the adjusting rod are connected with a fixed structure respectively, the fixed structure is U-shaped, the fixed structure includes a first fixed part, a second fixed part and a third fixed part, the first fixed part and the second fixed part are oppositely arranged, the first fixed part is connected with the first backing plate, the second fixed part is connected with the second backing plate, one end of the adjusting rod passes through one of the third fixed parts and is limited by limiting structure, and the other end of the adjusting rod passes through the other third fixed part and is locked by nut.

7. The steaming pad rack according to claim 1, wherein: It also includes a third support structure and a fourth support structure, which are arranged in parallel and located between the first pad and the second pad. The adjusting rod passes through the third support structure and the fourth support structure, and is threadedly connected to the third support structure and the fourth support structure respectively. The third support structure is connected to the first pad and there is a gap between the third support structure and the second pad. The fourth support structure is connected to the second pad and there is a gap between the fourth support structure and the first pad.

8. The steaming pad rack capable of being freely adjusted according to temperature changes according to claim 7, wherein: The third and fourth support structures are identical in structure, each including a second base plate, a third web plate, a fourth web plate, a third wing plate, and a fourth wing plate. The third and fourth web plates extend from both ends of the second base plate in the same direction, and are perpendicular to the second base plate. The third wing plate extends from the end of the third web plate away from the second base plate in a direction from the third web plate to the fourth web plate, and the fourth wing plate extends from the end of the fourth web plate away from the second base plate in a direction from the fourth web plate to the third web plate. Both the third and fourth wing plates are parallel to the second base plate. The third and fourth wing plates of the third support structure are connected to the first pad plate, and a gap exists between the second base plate and the second pad plate of the third support structure. Both the third wing plate and the fourth wing plate of the fourth support structure are connected to the second pad plate, and there is a gap between the second bottom plate of the fourth support structure and the first pad plate.

9. The steaming pad rack according to claim 7, wherein: The third support structure has a third threaded hole, and the fourth support structure has a fourth threaded hole. The adjusting rod is threadedly connected to the third threaded hole and the fourth threaded hole, respectively.

10. The steaming pad rack freely adjustable according to temperature change according to claim 1, wherein: It also includes a first reinforcing structure and a second reinforcing structure, both of which are located on both sides of the first pad and the second pad, and are alternately arranged on both sides of the first pad and the second pad. The first reinforcing structure is used to connect with the first pad, and there is a gap between the first reinforcing structure and the second pad. The second reinforcing structure is used to connect with the second pad, and there is a gap between the second reinforcing structure and the first pad.

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