CN103332360B - Support frame - Google Patents

Abstract

The invention discloses a support frame, which includes an upper support frame. The upper support frame includes a rectangular positioning part I, a wrapping part I, and a support part I. The wrapping part I is located at the outer edge of the positioning part I and is integrated with the positioning part I. , the adjacent wrapping parts I are separated, the supporting part I is located on the outside of the positioning part I and is integrated with the positioning part I, and on the opposite sides of the positioning part I, the supporting part I is located between the wrapping part I and the positioning part I In between, the wrapping part I and the supporting part I are separated, and on the other opposite sides of the positioning part I, the supporting part I is located on both sides of the wrapping part I, and the supporting part I here is a three-stage structure, its The length is greater than the length of the supporting part I between the wrapping part I and the positioning part I. The supporting frame of the invention has the advantages of simple structure, convenient production, obvious fixing effect, easy recycling and reuse, convenient stacking and transportation, and high supporting structure strength. It can be used for packing operation of high-end milk products, juice drinks and health supplements.

Description

a support frame

technical field

The invention relates to a support frame.

Background technique

High-end milk products are usually filled in aseptic paper packaging (referred to as aseptic bricks). Before packing, the aseptic bricks are placed in a three-by-four or three-by-five matrix arrangement, and then placed around the placed aseptic bricks Two positioning devices are installed, and the two positioning devices are distributed up and down. In the prior art, the positioning device is a foam board with a frame structure. As shown in FIG. 1 , a rectangular through hole is provided in the middle of the foam board 14, and an array of aseptic bricks arranged in a matrix is placed there. In order to make the foam boards 14 respectively located on the upper and lower parts of the aseptic bricks, an interlayer 15 is placed between the arranged aseptic bricks. As shown in Figure 2, the interlayer is rectangular as a whole, and right-angle gaps are provided at four right angles. The foam board is located at the gap, and the interlayer is embedded in the through hole of the foam board, thereby realizing the positioning of the distance between the two foam boards. The biggest advantage of this kind of packaging form is that it can strengthen the structure of the box body. In the lateral position of the box body, the aseptic brick is separated from the box body by a foam board, so that the aseptic brick is in the middle of the box body, and then plays a buffering role. At the same time, by opening a hollowed-out window area on the box body and covering it with a transparent plastic sheet to form a structure for displaying products, and increasing the distance between the box body and the aseptic bricks, the display effect of the window area can be enlarged. Here The distance between the box and the aseptic brick is formed by the foam board interval.

Foam board is a plastic product. Although it is light in texture, it is not easy to degrade and recycle. As an accessory in the product sales process, it only plays a packaging role. Once the package is opened, the foam board can no longer be used with the same function. pollute the environment. Foam boards are easy to break due to force, so it is not easy to store in the process of warehousing and logistics; and the stacked foam boards take up a lot of space, which is very obvious in the actual use process. As shown in Figure 3, foam boards must be stacked according to production requirements, so that the number of foam boards placed in a space per unit length has a great relationship with the thickness of foam boards. Generally, the thickness of foam boards is 1 to 1.5 cm. Board thickness greater than 1.5 cm.

Contents of the invention

The purpose of the present invention is to provide a support frame with a stable structure and convenient storage and transportation, which solves the technical problems of easy breakage and space occupation of the positioning device in the prior art.

In order to solve the above technical problems, the present invention adopts the following technical scheme: the support frame includes an upper support frame, and the upper support frame is a flat plate-shaped structure, including a positioning part I, a wrapping part I, and a supporting part I, and the positioning part I is rectangular, the wrapping part I is located on the outer edge of the positioning part I and is connected with the positioning part I, and the adjacent wrapping parts I are separated, and the supporting part I is located on the outside of the positioning part I and is connected to the positioning part I Connected as a whole, on opposite sides of the positioning part I, the supporting part I is located between the wrapping part I and the positioning part I, the wrapping part I and the supporting part I are separated, and the other part of the positioning part I is opposite The supporting part I is located on both sides of the wrapping part I, and the supporting part I here is a three-stage structure, and its length is longer than that of the supporting part I between the wrapping part I and the positioning part I.

In the natural state, the upper support frame is a plate-shaped structure. When in use, the wrapping part is bent relative to the positioning part to form a three-dimensional shape; the support part I of the three-stage structure is bent to form a U-shaped structure, which can be used with a larger contact area. box contacts. At this time, the working area of the upper support frame is formed at the wrapping part, and this working area can directly provide the positioning function for the aseptic brick array after packing. The upper support frame can be made of corrugated paper, which is much more stable than the foam board in the prior art; and the support strength of the support frame in the three-dimensional state is obviously increased, so it is more stable after three-dimensional forming.

The support frame is a plate-shaped material, and its thickness is smaller than that of the foam board in the prior art. The number of the upper support frame that can be loaded in the unit storage height is six times that of the foam board. With the support of this feature, the upper support frame of the present invention has great convenience in storage and transportation. Based on the above, the material of the upper support frame itself is more stable than the foam board, so the convenience is obvious.

In order to enhance the support strength of the upper support frame, as a preference of the present invention, the support part I of the three-stage structure is located at the long side of the positioning part I.

In order to ensure that the wrapping part I does not interfere with the support part I during the bending action, so that the wrapping part I can be bent and deformed better, as a preference of the present invention, on opposite sides of the positioning part I, the The distance between the connection position of the supporting part I and the positioning part I and the center line of symmetry of the positioning part I is smaller than the distance between the connection position of the wrapping part I and the positioning part I and the center line of symmetry. side, the distance between the connection position of the support part I and the positioning part I and the center line of symmetry of the positioning part I is equal to the distance between the connection position of the wrapping part I and the positioning part I and the center line of symmetry, and the support part I and the wrapping part There is a linear incision between Ⅰ.

In order to ensure that the supporting part I and the wrapping part I do not interfere with each other when they are separated, as a preference of the present invention, one end of the linear cutout is located in the positioning part I.

As a preference of the present invention, the body of the upper support frame is corrugated cardboard, and the groove extension direction of the corrugated core paper interlayer of the body of the upper support frame is perpendicular to the extension direction of the long side of the positioning part I. The advantage of such a design is that the elastic strength and support strength of the body of the upper support frame at the long sides can be increased.

As a preference of the present invention, the support frame also includes a lower support frame, the lower support frame is a flat plate-shaped structure, including a positioning part II, a wrapping part II, and a supporting part II, and the positioning part II is in the shape of a rectangular ring, The wrapping part II is located at the inner edge of the positioning part II and is integrally connected with the positioning part II, the adjacent wrapping parts II are separated, and the support part II is located at the outer edge of the positioning part II and is connected with the positioning part II as a whole , the adjacent supporting parts II are separated, and the outer dimension of the positioning part I is the same as the inner dimension of the positioning part II.

In this technical solution, two support frames with different structures are used to fix the aseptic brick array. Both the upper support frame and the lower support frame are plate-shaped structures. After stacking, the stacking quantity in a unit space is significantly larger than that of foam boards; the stacked support frames will form a compact overall structure during transportation, which has The features of anti-compression and anti-vibration facilitate the transportation of the supporting frame.

The aseptic brick array is in the shape of a cuboid as a whole, and the plate-shaped upper support frame is installed on the top of the aseptic brick array, and then the wrapping part I is bent and wrapped on the top of the aseptic brick array, and part of the supporting part I continues to be flat with the positioning part I. In the plane, the remaining support part I is bent in a U shape, and can contact the packing box with a large contact area, so that the upper support frame forms a stable semi-enclosed three-dimensional structure. The plate-shaped lower support frame is wrapped around the aseptic brick array, the wrapping part II is close to the aseptic bricks, and the support part II is bent relative to the positioning part II, so that the lower support frame also forms a stable three-dimensional structure. In addition, the positioning part I and the positioning part II can be used as stable stress points in the process of combining the upper and lower support frames with the aseptic bricks. Therefore, the support frame is suitable for mechanized and fully automatic installation operations.

As a preference of the present invention, the wrapping part II is trapezoidal, and a linear cut is provided between adjacent wrapping parts II. The structural design is mainly to increase the supporting strength of the wrapping part II.

As a preference of the present invention, one end of the cutout is located in the positioning portion II. One end of the cut is not at the connection position between wrapping part II and positioning part II, but goes deep into the inside of positioning part II. This design is to ensure that adjacent wrapping parts II do not interfere with each other during the bending action.

As a preference of the present invention, the positioning portion II is provided with right-angled notches at four corners of the outer edge. This design is to ensure that adjacent supporting parts II do not interfere with each other during the bending action.

As a preference of the present invention, the main body of the lower supporting frame is made of corrugated cardboard, and the extending direction of the groove of the wave-shaped core paper interlayer of the main body of the lower supporting frame is perpendicular to the extending direction of the long side of the positioning part II. The advantage of such a design is that the elastic strength and supporting strength of the body of the lower support frame at the long sides can be increased.

The invention adopts the above-mentioned technical scheme: the supporting frame has a simple structure, is convenient to produce, and can be produced from environmentally friendly materials; and the positioning and fixing effect is obvious when used. Compared with the positioning device in the prior art, the supporting frame has the advantages of easy recycling and reuse, convenient stacking and transportation, and high supporting structure strength. It can be used not only for packing high-end milk products, but also for fruit juice drinks and health supplements.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is the structure schematic diagram I of foam board fixed aseptic brick array in the prior art;

Fig. 2 is the structure schematic diagram II of foam board fixed aseptic brick array in the prior art;

Fig. 3 is a schematic diagram of the stacking state of foam boards in the storage and transportation process in the prior art;

Fig. 4 is the front view of the upper support frame of the first embodiment of a support frame of the present invention;

Fig. 5 is a schematic diagram of the use of the first embodiment of a support frame of the present invention;

Fig. 6 is a front view of a lower support frame of a second embodiment of a support frame of the present invention;

Fig. 7 is a view of the use state of the lower support frame of the second embodiment of the support frame of the present invention;

Fig. 8 is the use state diagram I of the second embodiment of a support frame of the present invention;

Fig. 9 is the use state diagram II of the second embodiment of a support frame of the present invention.

Detailed ways

In the first embodiment of the present invention, as shown in Figures 4 and 5, the support frame includes an upper support frame 1, and the upper support frame 1 is die-cut from corrugated cardboard. Corrugated cardboard is formed by bonding face paper and wavy core paper interlayers. The wavy core paper interlayers are continuously bent to form grooves 3, and the directions between adjacent grooves 3 are opposite and the extension directions are parallel. After die-cutting and forming, the body of the upper support frame 1 is provided with a positioning part I4, a wrapping part I5 and a supporting part I6. Both the wrapping part I5 and the supporting part I6 are integrally connected with the positioning part I4, and the wrapping part I5 and the positioning part I4 are demarcated and distinguished by the crease line 7 . The positioning part I4 is a rectangular structure, the length of the long side is greater than the length of the wide side, and the extending direction of the long side is perpendicular to the extending direction of the groove 3 on the body, so the extending direction of the wide side is parallel to the extending direction of the groove 3 on the body . A notch is provided at each of the four corners of the positioning part I4. The wrapping part I5 is a rectangular structure, and the body of the upper support frame 1 is provided with four wrapping parts I5, and the wrapping parts I5 are respectively located at the outer edges of the positioning part I4, and the length of the wrapping part I5 located at the long side of the positioning part I4 is shorter than that of the positioning part I5. The edge length of the part I4 at the long side, the length of the wrapping part I5 located at the wide side of the positioning part I4 is equal to the edge length of the positioning part I4 at the wide side. Therefore, the four wrappings I5 are separated. The support part I6 is rectangular, and it is located outside the positioning part I4. There are two on the long side of the positioning part I4, one on the wide side of the positioning part I4; two on the long side of the positioning part I4. The supporting part I6 is symmetrically distributed and located at both ends of the long side of the positioning part I4 respectively. The supporting part I6 is a three-stage structure, and there are two parallel crease lines 7 on it, and its length is longer than that of the positioning part I4 on the wide side. The length of the supporting part I6 at the position, the supporting part I6 at the broad side of the positioning part I4 is located in the middle of the wide side. At the long side of the positioning part I4, the distance D1 from the connection position of the support part I6 and the positioning part I4 to the center line of the positioning part I4 is equal to the distance D1' from the connection position of the wrapping part I5 and the positioning part I4 to the center line; At the wide side of the positioning part I4, the distance D2 from the connection position of the support part I6 and the positioning part I4 to the center line of the positioning part I4 is smaller than the distance D2' from the connection position of the wrapping part I5 and the positioning part I4 to the center line. The two support parts I6 of the three-stage structure at the long side of the positioning part I4 are in a state of symmetry with respect to the center line of the positioning part I4. The supporting part I6 is located on both sides of the wrapping part I5. When the die-cutting is formed, the supporting part I6, the wrapping part I5 and the positioning part I4 are all on the same plane. There is a linear cut between the supporting part I6 and the wrapping part I5. Therefore, the supporting part I6 It is separated from the wrapping part I5, and one end of the linear cut is located in the positioning part I4. A through hole I8 is provided in the middle of the positioning part I4, and the through hole I8 is rectangular in shape, and the four corners are arc-shaped. The position of the long side of the through hole I8 corresponds to the position of the long side of the positioning part I4, the position of the wide side of the through hole I8 corresponds to the position of the wide side of the positioning part I4, and the through hole I8 makes the position of the positioning part I4 The width W1 of the body at the broad side is equal to the width W1' of the body at the long side.

The upper support frame 1 is a flat plate structure, which takes up less space and has a higher space utilization rate after being stacked. Storage movement is convenient. As shown in FIG. 5 , it needs to be bent along the crease line 7 of the upper support frame 1 during use. The crease lines 7 of the upper support frame 1 are all on the same side surface, therefore, the bending directions of the four wrapping parts I5 are the same during bending. During the bending process, the supporting part I6 is separated from the wrapping part I5, and an angle is formed between the supporting part I6 and the supporting part I6 of the wrapping part I5. The supporting part I6 at the long side of the positioning part I4 is bent into a U shape, and the bent supporting part I6 protrudes from the lower surface of the positioning part I4. After bending, the upper support frame 1 forms a semi-enclosed three-dimensional structure, and a working area for positioning and fixing objects is formed between the wrapping part I5 and the positioning part I4. At the wide side of the positioning part I4, since the crease line 7 between the wrapping part I5 and the positioning part I4 is far away from the connection position between the supporting part I6 and the positioning part I4, this ensures that the wrapping part I5 will not affect the supporting part when it is bent Ⅰ6 continues to maintain the original state, so that the two do not interfere with each other during the bending process, and the bending forming process can proceed smoothly.

The bent upper support frame 1 can be installed on the outside of the object. Here, the aseptic brick placed in a matrix is taken as an example. The aseptic bricks are arranged in a matrix, and the aseptic brick array is in the shape of a cuboid as a whole. The upper support frame 1 is covered on the aseptic brick array, and the wrapping part I5 is located around the aseptic brick array. The aseptic array is clamped by clamping the four wrapping parts I5, and finally the aseptic brick array is put into a box with a cuboid space. Inside the box. After packing, the wrapping part I5 is pressed against the inside of the packing box under the action of its own elasticity; the support part I6 faces the inner wall of the packing box, and the supporting part I6 is also pressed against the inside of the packing box under the action of its own elasticity; the positioning part I4 At the long side, due to the surface contact between the U-shaped bent support part I6 and the inner wall of the packaging box, the connection between the upper support frame 1 and the packaging box is closer. The contact area of the inner wall of the box is much larger than the contact area of the support portion I6 at the wide side of the positioning portion I4 and the inner wall of the packaging box. Due to the limitation of the working area formed by the wrapping part I5, the placement position of the aseptic brick array is limited.

The structure of the upper support frame 1 is extremely stable in the three-dimensional state, the main reason is that the stress structure of the upper support frame 1 changes in the three-dimensional state, and the stability of the stress structure is improved. Simultaneously, the setting of the long side of the upper support frame 1 can also optimize the force-bearing structure. After the wrapping part of the upper support frame 1 is bent, the force bearing capacity of the surface of the positioning part is improved due to the support of the bent wrapping part. This is because The extension direction of the groove 3 of the wave-shaped core paper interlayer at the long side is perpendicular to the extension direction of the long side, and the positioning part itself can bear a large external force in a direction parallel to it, and the wrapping part is bent so that the wrapping part is in line with the long side. The positioning part can withstand a large external force in a non-parallel direction, and then the positioning part can withstand a large external force in a non-parallel direction, that is, a direction inclined to the positioning part or perpendicular to the positioning part; the wrapping part is positioned The function of the upper support frame 1 can withstand a relatively large external force in a direction perpendicular to or inclined to its surface. In this way, the positioning part and the wrapping part interact and complement each other, and finally the entire upper support frame 1 is structurally stable in a three-dimensional state. The upper support frame 1 in this embodiment not only plays the fixing role played by the foam board in the prior art during use, but also the stable three-dimensional structure makes the upper support frame 1 suitable for mechanized and fully automatic installation operations.

The second embodiment of the present invention differs from the first embodiment in that the support frame not only includes the upper support frame 1 but also the lower support frame 2 . As shown in Figures 6 and 7, the lower support frame 2 is also formed by die-cutting corrugated cardboard, and is in the shape of a cross as a whole. After die-cutting and forming, the body of the lower support frame 2 is provided with a positioning part II9, a wrapping part II11 and a supporting part II10. The positioning part II9, the wrapping part II11 and the supporting part II10 are connected as a whole and are all in the same plane, the wrapping part II11 and the positioning part II9 are divided by the crease line 7, and the support part II10 and the positioning part II9 Demarcated by the crease line 7. The positioning part II9 is in the shape of a rectangular ring, the outer edge is rectangular, and the inner edge is also rectangular; the width W3 of the body of the positioning part II9 at the wide side is greater than the width W3` of the body at the long side; the length and width of the inner side and the positioning part The overall length and width of I4 are the same, that is, the overall length of the long side of the positioning part I4 is equal to the length of the long side of the inner side of the positioning part II9, and the overall length of the wide side of the positioning part I4 is the same as the length of the inner side of the positioning part II9. are all equal in length. The length of the long side is greater than that of the wide side, and the extending direction of the long side is perpendicular to the extending direction of the groove on the body, so the extending direction of the wide side is parallel to the extending direction of the groove on the body. Each of the four corners of the positioning part II9 is provided with a right-angle notch, so that the length of each edge of the positioning part II9 is smaller than the overall size, that is, the length L1` of the outer edge of the positioning part II9 at the long side is smaller than that of the positioning part II9 as a whole The length L1 at the long side and the length W2' of the outer edge of the positioning portion II9 at the broad side are smaller than the length W2 at the broad side of the positioning portion II9 as a whole. The support part II10 is rectangular, it is located outside the positioning part II9 and connected with the positioning part II9 as a whole. The length of the support part II10 at the long side of the positioning part II9 is the same as the length L1' of the outer edge of the positioning part II9 at the long side, and the length of the support part II10 at the broad side of the positioning part II9 is the same as that of the positioning part II9 has the same length W2' of the outer edges at the broad sides. Therefore, adjacent support portions II10 are separated. The wrapping part II11 is located inside the positioning part II9 and connected with the positioning part II9 as a whole. The wrapping parts II11 are all trapezoidal, and the bottom corners of adjacent wrapping parts II11 are supplementary angles; and the body of the lower support frame 2 is provided with a linear cut 12 between adjacent wrapping parts II11, and the linear cut 12 extends to the positioning part II9, so that the adjacent wrapping portion II11 is separated.

The support frame has a flat structure, and after being stacked, it occupies less space and has a high space utilization rate. The stacked support frame is relatively compact as a whole, and has strong compression and earthquake resistance characteristics, making the support frame convenient for storage and movement. When in use, it needs to be bent along the crease line 7 of the lower support frame 2 . The crease lines 7 of the lower support frame 2 are all on the surface of the same side, therefore, the bending directions of the four wrapping parts II11 and the four supporting parts II10 are the same. During the bending process of the lower support frame 2, the wrapping part II11 and the support part II10 are bent in the same direction to form a ring-shaped three-dimensional structure, and a through hole II13 is formed between the wrapping parts II11. The outer dimension of the through hole II13 is the same as that of the positioning part I4 of the same dimensions. The adjacent wrapping parts II11 are affected by the linear cutout 12 during the bending process, and the adjacent wrapping parts II11 will not interfere with each other; and because the straight cutouts 12 extend into the positioning part II9, it can fully ensure the relative The positioning part II9 will not be torn when the adjacent wrapping part II11 is bent.

As shown in Figures 8 and 9, the bent support frame can be installed on the outside of the object. Here, the aseptic brick placed in a matrix is taken as an example. The aseptic bricks are arranged in a matrix, and the aseptic brick array is in the shape of a cuboid as a whole, and its peripheral size is consistent with that of the through hole II13. First, place 2 sets of lower support frames around the aseptic brick array, and the wrapping part II11 is closely attached to the aseptic brick array under the elasticity of its own material, so that the surrounding of the aseptic brick array is tight by the lower support frame 2. Tight fix. Then the upper support frame 1 is placed on the top of the aseptic brick array, because the positioning part I4 is supported by the aseptic brick array, so it is on the top of the aseptic brick array. The wrapping part I5 is located around the aseptic brick array, and the aseptic array is clamped by clamping the four wrapping parts I5, and finally the aseptic brick array is put into a packing box with a cuboid space. After packing, the supporting part I6 faces the inner wall of the packing box, the wrapping part I5 is pressed against the inside of the packing box under its own elasticity, and the supporting part II10 is also pressed against the inside of the packing box under its own elasticity.

The structure of the upper support frame 1 and the lower support frame 2 is extremely stable in the three-dimensional state, the main reason is that the force-bearing structure of the support frame changes in the three-dimensional state, and the stability of the force-bearing structure is improved. At the same time, the arrangement of the long sides of the upper support frame 1 and the lower support frame 2 can also optimize the force-bearing structure. After the wrapping part I5 of the upper support frame 1 is bent, the surface force capacity of the positioning part I4 is due to the bent wrapping part I5 This is because the extension direction of the groove of the wave-shaped core paper interlayer at the long side is perpendicular to the extension direction of the long side, and the positioning part I4 itself can withstand a large external force in a direction parallel to it, and the wrapping part I5 is bent, so that the wrapping part I5 can withstand a large external force in a direction non-parallel to the positioning part I4, and then promote the positioning part I4 in a non-parallel direction to it, that is, inclined to the positioning part I4 or perpendicular to the positioning part I4 The direction of the package can bear a large external force; the wrapping part I5 is affected by the positioning part I4, and can withstand a large external force in a direction perpendicular to or inclined to its surface, so that the interaction between the positioning part I4 and the wrapping part I5, Complementary to each other, finally the whole upper support frame 1 is structurally stable in a three-dimensional state. In the same way, after the wrapping part II11 and the supporting part II10 at the long side of the lower support frame 2 are bent, the interaction between the wrapping part II11 and the positioning part II9 as well as between the supporting part II10 and the positioning part II9 and the mutual complementarity are formed. relation.

The upper support frame 1 and the lower support frame 2 in this embodiment not only play the fixing role played by the foam board in the prior art during use, but also the stable three-dimensional structure makes the support frame suitable for mechanized and fully automatic installation operations . During the installation of the support frame, it can be found that the positioning part I4 and the positioning part II9 are fixed in the same direction relative to the aseptic brick array, which provides a stable force point for mechanized automatic installation, and is convenient for mechanical devices to grab or absorb , while other parts can rely on other objects to guide them to bend and deform during the chain movement process.

According to actual use requirements, the number of supporting parts I at the long side of the positioning part I of the upper support frame in the above embodiment may be three. In addition to using corrugated paper to produce support frames, other flat paper boards can also be used to produce support frames, which can also meet the requirements of bending and forming.

According to actual use needs, on the basis of the first embodiment, the same upper support frame can be installed at the bottom of the aseptic brick array in the case of no window, so that the aseptic brick array can be fixed up and down.

Claims (10)

1. a bracing frame, it is characterized in that: this bracing frame comprises upper support frame (1), described upper support frame (1) is flat platy structure, comprise location division I (4), parcel I (5), support portion I (6), described location division I (4) is rectangular, described parcel I (5) is positioned at the outer ledge of location division I (4) and is connected as a single entity with location division I (4), between adjacent parcel I (5) separately, described support portion I (6) is positioned at the outside of location division I (4) and is connected as a single entity with location division I (4), in the both sides that location division I (4) place is relative, support portion I (6) is positioned between parcel I (5) and location division I (4), separate between described parcel I (5) and support portion I (6), in location division I (4), another locates relative both sides, support portion I (6) is positioned at the both sides of parcel I (5), and the support portion I (6) at this place is three stage structure, its length is greater than the length of the support portion I (6) be positioned between parcel I (5) and location division I (4).

2. bracing frame according to claim 1, is characterized in that: the support portion I (6) of described three stage structure is positioned at the long edge position of location division I (4).

3. bracing frame according to claim 1, it is characterized in that: in the both sides that location division I (4) place is relative, the connection location of described support portion I (6) and location division I (4) is less than the distance of connection location to this symmetrical center line of parcel I (5) and location division I (4) to the distance of the symmetrical center line of location division I (4), in location division I (4), another locates relative both sides, the connection location of described support portion I (6) and location division I (4) equals the distance of connection location to this symmetrical center line of parcel I (5) and location division I (4) to the distance of the symmetrical center line of location division I (4), and be provided with linear pattern otch between support portion I (6) and parcel I (5).

4. bracing frame according to claim 3, is characterized in that: described linear pattern otch one end is positioned at location division I (4).

5. bracing frame according to claim 1, it is characterized in that: the body of described upper support frame (1) is corrugated board, groove (3) bearing of trend of the waveform core paper interlayer of the body of described upper support frame (1) is perpendicular to the bearing of trend on the long limit of described location division I (4).

6. bracing frame according to claim 1, it is characterized in that: this bracing frame also comprises lower support frame (2), described lower support frame (2) is flat platy structure, comprise location division II (9), parcel II (11), support portion II (10), the rectangular ring-type in described location division II (9), described parcel II (11) is positioned at the inside edge of location division II (9) and is connected as a single entity with location division II (9), between adjacent parcel II (11) separately, described support portion II (10) is positioned at the outer ledge of location division II (9) and is connected as a single entity with location division II (9), between adjacent supports portion II (10) separately, the outside dimension of described location division I (4) is identical with the inside dimensions of location division II (9).

7. bracing frame according to claim 6, is characterized in that: described parcel II (11), in trapezoidal, is provided with linear pattern otch (12) between adjacent parcel II (11).

8. bracing frame according to claim 7, is characterized in that: described otch one end is positioned at location division II (9).

9. bracing frame according to claim 6, is characterized in that: rectangular breach is established at four edges of outer ledge in described location division II (9).

10. bracing frame according to claim 6, it is characterized in that: the body of described lower support frame (2) is all corrugated board, groove (3) bearing of trend of the waveform core paper interlayer of the body of described lower support frame (2) is perpendicular to the bearing of trend on the long limit of described location division II (9).