Keel supporting frame and keel

Abstract

The utility model relates to the field of building materials, in particular to a keel supporting frame and a keel. The keel supporting frame comprises a supporting frame body, the supporting frame body is provided with a first plate body and a second plate body, and the first plate body and the second plate body are oppositely arranged. The supporting frame body is provided with a first end and a second end which are oppositely arranged in the length direction of the supporting frame body, and the first plate body and the second plate body are connected with a first limiting plate and a second limiting plate at the first ends respectively; the first limiting plate extends from the first plate body to the second plate body, and the second limiting plate extends from the second plate body to the first plate body; and a first gap is formed between the first limiting plate and the second limiting plate. By the adoption of the technical scheme, the limiting structure is directly formed through the limiting plate extending out of the supporting frame body, the fixing effect on internal battens is good, the manufacturing process is simple and convenient, material waste is little, additional structure arrangement is not needed, and good application and popularization value is achieved.

Description

Technical Field

[0001] The utility model relates to the field of building materials, and specifically, to a keel support frame and a keel. Background Art

[0002] With the advancement of the urbanization process, the demand for building construction has gradually increased, and keels are indispensable building materials in urban construction. As a new type of keel material, the steel-wood composite keel can effectively improve the strength of the keel and save the consumption of wood, and is widely welcomed by users.

[0003] For the existing steel-wood keels, the fixation between the internal wooden square and the external support frame is likely to become loose; currently, solutions for limiting from both ends of the support frame have been proposed, such as CN113202293A, CN220954211U, CN212201295U, CN217871320U, but the above solutions either require adding additional covers or result in more steel waste during the preparation of the external support frame, and all need to be improved.

[0004] In view of this, this application is proposed. Content of the Utility Model

[0005] The purpose of this application is to provide a keel support frame and a keel to solve at least one technical problem mentioned in the background art.

[0006] Specifically, in the first aspect of this application, a keel support frame is provided, including:

[0007] A support frame body, the support frame body has a first plate body and a second plate body arranged oppositely, and a third plate body and a fourth plate body arranged oppositely, the third plate body is respectively connected to the first plate body and the second plate body, and the fourth plate body is respectively connected to the first plate body and the second plate body;

[0008] The first plate body, the second plate body, the third plate body, and the fourth plate body form an inner cavity for placing a wooden square;

[0009] The support frame body has a first end and a second end arranged oppositely in its length direction, the first plate body and the second plate body are respectively connected to a first limiting plate and a second limiting plate at the first end; the third plate body and the fourth plate body are respectively connected to a third limiting plate and a fourth limiting plate at the second end;

[0010] The first limiting plate extends from the first plate body towards the second plate body, and the second limiting plate extends from the second plate body towards the first plate body; the third limiting plate extends from the third plate body towards the fourth plate body, and the fourth limiting plate extends from the fourth plate body towards the third plate body;

[0011] A first gap is formed between the first limiting plate and the second limiting plate; a second gap is formed between the third limiting plate and the fourth limiting plate.

[0012] With the above technical solution, the limiting structure is directly formed by the limiting plates extending from the self-supporting frame body, which has a good fixing effect on the internal wooden square, simple manufacturing process, less material waste, and no need for additional structure setting, and has good application and popularization value.

[0013] Preferably, the distances from the first gap to the first plate body and the second plate body are the same, and the width of the first gap does not exceed 1 / 4 of the first limiting plate and the second limiting plate.

[0014] Preferably, the distances from the second gap to the third plate body and the fourth plate body are the same, and the width of the second gap does not exceed 1 / 4 of the third limiting plate and the fourth limiting plate.

[0015] Preferably, at least one first through hole is provided on the first plate body, and at least one second through hole is provided on the second plate body; the first through hole and the second through hole are correspondingly arranged.

[0016] Preferably, at least one third through hole is provided on the third plate body, and at least one fourth through hole is provided on the fourth plate body; the third through hole and the fourth through hole are correspondingly arranged.

[0017] Preferably, a first fixing member is provided at one end of the first limiting plate away from the first plate body, and / or a second fixing member is provided at one end of the second limiting plate away from the second plate body.

[0018] Preferably, a third fixing member is connected to one end of the third limiting plate away from the third plate body, and / or a fourth fixing member is connected to one end of the fourth limiting plate away from the fourth plate body.

[0019] Preferably, the first fixing member includes a screw hole and a screw, and the length of the screw is greater than the thickness of the first plate body; and / or the second fixing member includes a screw hole and a screw, and the length of the screw is greater than the thickness of the second plate body.

[0020] Preferably, the third fixing member includes a screw hole and a screw, and the length of the screw is greater than the thickness of the third plate body; and / or the fourth fixing member includes a screw hole and a screw, and the length of the screw is greater than the thickness of the fourth plate body.

[0021] Preferably, the first fixing member is connected to the first limiting plate and is arranged at an angle, and more preferably, the two are perpendicular to each other; the second fixing member is connected to the second limiting plate and is arranged at an angle, and more preferably, the two are perpendicular to each other.

[0022] Preferably, the third fixing member is connected to the third limiting plate and is disposed at an angle, and more preferably, they are perpendicular to each other; the fourth fixing member is connected to the fourth limiting plate and is disposed at an angle, and more preferably, they are perpendicular to each other.

[0023] Preferably, the first limiting plate is serrated, and the length of its serrations is 1 / 2 of the first gap; the second limiting plate is serrated, and the length of its serrations is 1 / 2 of the first gap; the serrations of the first limiting plate and the second limiting plate are staggered.

[0024] Preferably, the third limiting plate is serrated, and the length of its serrations is 1 / 2 of the second gap; the fourth limiting plate is serrated, and the length of its serrations is 1 / 2 of the second gap; the serrations of the third limiting plate and the fourth limiting plate are staggered.

[0025] Preferably, the material of the keel support frame is zinc-aluminum-magnesium alloy.

[0026] Furthermore, in the second aspect of the present application, a keel is provided, including

[0027] the keel support frame as described in the first aspect of the present application,

[0028] a wooden square disposed inside the keel support frame and fixed or limited by the keel support frame.

[0029] Furthermore, in the third aspect of the present application, a method for preparing the keel as described in the second aspect of the present application is provided. The keel includes a keel support frame and a wooden square. The keel support frame is cut from a whole square pipe. The method includes the steps:

[0030] Design the cutting position of the square pipe. The square pipe has a head end and a tail end in its length direction;

[0031] Cut the square pipe according to the cutting position of the square pipe to obtain a plurality of keel support frame precursors connected end to end. The keel support frame precursors include a first limiting plate in the same plane as the first plate body, a second limiting plate in the same plane as the second plate body, a third limiting plate in the same plane as the third plate body, and a fourth limiting plate in the same plane as the fourth plate body;

[0032] Separate the plurality of keel support frame precursors, and place a wooden square with a suitable length into the inner cavity of each keel support frame precursor;

[0033] Bend the first limiting plate, the second limiting plate, the third limiting plate, and the fourth limiting plate of each keel support frame precursor to limit the internal wooden square;

[0034] Among them, in the step of cutting position of the designed square pipe, it includes: corresponding first cutting line and second cutting line are set on the first plate body and the second plate body, both of which extend from the third plate body to the fourth plate body and are located in the first plane; corresponding third cutting line and fourth cutting line are set on the third plate body and the fourth plate body, both of which extend from the first plate body to the second plate body and are located in the second plane; the first plane and the second plane are parallel to each other.

[0035] Preferably, the method further includes the steps:

[0036] Bend the first limiting plate and the second limiting plate by 90°, and connect them to each other. Cut along their connection line so that the first limiting plate and the second limiting plate form ends with sawteeth, and bend the ends to form the first fixing plate and the second fixing plate.

[0037] Preferably, the method further includes the steps:

[0038] Bend the third limiting plate and the fourth limiting plate by 90°, and connect them to each other. Cut along their connection line so that the third limiting plate and the fourth limiting plate form ends with sawteeth, and bend the ends to form the third fixing plate and the fourth fixing plate.

[0039] In summary, the present application has the following beneficial effects:

[0040] 1. The keel support frame provided by the present application directly forms a limiting structure through the limiting plates extending from the support frame body, has a good fixing effect on the internal wooden square, has a simple manufacturing process, less material waste, and does not require the setting of additional structures, and has good application and popularization value.

[0041] 2. The keel support frame provided by the present application can further fix the internal wooden square through the fixing parts at the ends of the limiting plates, improve the fixing stability of the wooden square and the support frame, improve the product quality, and ensure the engineering construction effect.

[0042] 3. The keel support frame provided by the present application uses zinc-aluminum-magnesium alloy as the main material, which can reduce the weight of the frame body while ensuring the strength of the frame body, and reduce the transportation and construction difficulty.

[0043] 4. The method for preparing the keel provided by the present application, through the design of the cutting position, enables adjacent keel support frame precursors to be formed after one cutting, and the adjacent parts do not waste the base material, which reduces the loss of the base material while ensuring a simple process. Description of the Drawings

[0044] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0045] Figure 1 Schematic diagram of the first group of implementation manners of the keel support frame of the present application;

[0046] Figure 2 Schematic diagram of the second group of implementation manners of the keel support frame of the present application;

[0047] Figure 3 Schematic diagram of the third group of implementation manners of the keel support frame of the present application;

[0048] Figure 4 Schematic diagram of the fourth group of implementation manners of the keel support frame of the present application;

[0049] Figure 5 Schematic diagram of the fifth group of implementation manners of the keel support frame of the present application;

[0050] Figure 6 Schematic diagram of the sixth group of implementation manners of the keel support frame of the present application;

[0051] Figure 7 Schematic diagram of the keel preparation method in some embodiments of the present application;

[0052] Figure 8 Schematic diagram of the keel support frame precursor in some embodiments of the present application;

[0053] Figure 9 Schematic diagram of the preparation method of the fixing plate in some embodiments of the present application.

[0054] Explanation of the reference numerals

[0055] Through the above explanation of the reference numerals, combined with the embodiments of the present application, the technical solutions of the present application can be understood and illustrated more clearly.

[0056] 10. Support frame body; 11. Front body of the support frame; 110. First plate body; 111. First limiting plate; 113. First screw hole; 115. First cutting line; 120. Second plate body; 121. Second limiting plate; 123. Second screw hole; 124. Second fixing plate; 125. Second cutting line; 130. Third plate body; 131. Third limiting plate; 132. Third through hole; 133. Third screw hole; 134. Third fixing plate; 135. Third cutting line; 140. Fourth plate body; 141. Fourth limiting plate; 142. Fourth through hole; 143. Fourth screw hole; 144. Fourth fixing plate; 145. Fourth cutting line; 150. First end; 160. Second end; 200. First gap; 300. Second gap. Detailed implementation manners

[0057] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0058] The terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The singular forms "a", "the", and "said" used in the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0059] The present application will be described in detail below through embodiments.

[0060] For the existing steel-wood keel, the fixation between the internal wooden square and the external support frame is likely to become loose; currently, a solution for limiting from both ends of the support frame is proposed, such as Figure 1 the solution of additionally adding a cover body as shown, this solution has a relatively complex preparation process and will waste more base materials during preparation, and needs to be improved.

[0061] To solve the technical problems existing in the existing steel-wood keels in the background art, the inventive concept of this application is to provide a keel support frame, including: a support frame body, the support frame body having a first plate body and a second plate body arranged oppositely, and a third plate body and a fourth plate body arranged oppositely, the third plate body being connected to the first plate body and the second plate body respectively, and the fourth plate body being connected to the first plate body and the second plate body respectively. The first plate body, the second plate body, the third plate body, and the fourth plate body form an inner cavity for placing wooden squares. The support frame body has a first end and a second end arranged oppositely in its length direction, and the first plate body and the second plate body are respectively connected to a first limiting plate and a second limiting plate at the first end. The third plate body and the fourth plate body are respectively connected to a third limiting plate and a fourth limiting plate at the second end. The first limiting plate extends from the first plate body towards the second plate body, and the second limiting plate extends from the second plate body towards the first plate body. The third limiting plate extends from the third plate body towards the fourth plate body, and the fourth limiting plate extends from the fourth plate body towards the third plate body. A first gap is formed between the first limiting plate and the second limiting plate; a second gap is formed between the third limiting plate and the fourth limiting plate.

[0062] According to this inventive concept, through the limiting plates extending from the support frame body, a limiting structure is directly formed, which has a good fixing effect on the internal wooden squares, and has a simple manufacturing process, less material waste, and does not require the setting of additional structures, having good application and promotion value.

[0063] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the specification drawings and specific implementation manners.

[0064] Based on the inventive concept of this application, in some preferred embodiments of this application, a keel support frame is provided. Refer to Figure 1 - Figure 2 , including:

[0065] A support frame body 10, the support frame body having a first plate body 110 and a second plate body 120 arranged oppositely, and a third plate body 130 and a fourth plate body 140 arranged oppositely, the third plate body 130 being connected to the first plate body 110 and the second plate body 120 respectively, and the fourth plate body 140 being connected to the first plate body 110 and the second plate body 120 respectively.

[0066] Wherein, the first plate body 110, the second plate body 120, the third plate body 130, and the fourth plate body 140 form an inner cavity for placing wooden squares.

[0067] In the specific implementation process, the first plate body 110, the second plate body 120, the third plate body 130, and the fourth plate body 140 enclose a rectangle and form a rectangular inner cavity. In some preferred implementation manners, the support frame body 10 is made of zinc-aluminum-magnesium alloy material, which can reduce the weight of the frame body while ensuring the strength of the frame body, and reduce the transportation and construction difficulties.

[0068] The support frame body 10 has a first end 150 and a second end 160 arranged oppositely in its length direction. The first plate body 110 and the second plate body 120 are respectively connected to a first limiting plate 111 and a second limiting plate 121 at the first end 150. The third plate body 130 and the fourth plate body 140 are respectively connected to a third limiting plate 131 and a fourth limiting plate 141 at the second end 160.

[0069] The first limiting plate 111 extends from the first plate body 110 towards the second plate body 120, and the second limiting plate 121 extends from the second plate body 120 towards the first plate body 110. The third limiting plate 131 extends from the third plate body 130 towards the fourth plate body 140, and the fourth limiting plate 141 extends from the fourth plate body 140 towards the third plate body 130.

[0070] A first gap 200 is formed between the first limiting plate 111 and the second limiting plate 121; a second gap 300 is formed between the third limiting plate 131 and the fourth limiting plate 141.

[0071] Adopting the above technical solution, the limiting structure is directly formed by the limiting plates extending from the support frame body, and the fixing effect on the internal wooden square is good. Moreover, the manufacturing process is simple, the material waste is less, and no additional structure needs to be set, which has good application and popularization value. Further, by setting gaps between the limiting plates, drainage at the ends can be realized after the internal wooden square gets wet or absorbs water, avoiding the corruption of the internal wooden square and ensuring the stable quality of the keel.

[0072] In some preferred implementation manners, the distances from the first gap 200 to the first plate body 110 and the second plate body 120 are the same, and the distances from the second gap 300 to the third plate body 130 and the fourth plate body 140 are the same, which is convenient for product preparation.

[0073] In some preferred implementation manners, the distances from the first gap 200 to the first plate body 110 and the second plate body 120 are different, and the distances from the second gap 300 to the third plate body 130 and the fourth plate body 140 are different, which is convenient for identifying the direction of the product in specific situations and facilitating placement and storage.

[0074] In some preferred embodiments, the width of the first gap 200 does not exceed 1 / 4 of the first limiting plate and the second limiting plate, and the width of the second gap does not exceed 1 / 4 of the third limiting plate and the fourth limiting plate, so as to ensure the mechanical strength of the limiting plates.

[0075] In some preferred embodiments, the first plate body 110 is provided with at least one first through hole, and the second plate body 120 is provided with at least one second through hole; the first through hole and the second through hole are correspondingly arranged.

[0076] In some preferred embodiments, the third plate body 130 is provided with at least one third through hole 132, and the fourth plate body 140 is provided with at least one fourth through hole 142; the third through hole 132 and the fourth through hole 142 are correspondingly arranged.

[0077] By adopting the above technical solution, arranging through holes on the plate body can reduce the overall weight of the keel, and at the same time can improve the ventilation of the internal wooden square, ensuring the dryness and stability of the internal wooden square.

[0078] In some preferred embodiments, a first fixing member is provided at one end of the first limiting plate 111 away from the first plate body 110, and / or a second fixing member is provided at one end of the second limiting plate 121 away from the second plate body 120.

[0079] In some preferred embodiments, a third fixing member is connected to one end of the third limiting plate 131 away from the third plate body 130, and / or a fourth fixing member is connected to one end of the fourth limiting plate 141 away from the fourth plate body 140.

[0080] By adopting the above technical solution, fixing members are provided at the ends of the limiting plates to improve the limiting ability of the internal wooden square and ensure the overall stability of the keel. Specifically, the end is the edge of the limiting plate or a position close to the edge, usually the distance from the edge does not exceed 2 cm.

[0081] In some preferred embodiments, as Figure 3 shown, the first fixing member includes a first screw hole

[0082] 113 and a first screw (not shown in the figure), and the length of the first screw is greater than the thickness of the first plate body 110; and / or the second fixing member includes a second screw hole 123 and a second screw (not shown in the figure), and the length of the second screw is greater than the thickness of the second plate body 120.

[0083] In some preferred embodiments, as Figure 4As shown, the third fixing member includes a third screw hole 133 and a third screw (not shown in the figure), and the length of the third screw is greater than the thickness of the third plate body 130; and / or, the fourth fixing member includes a screw hole 143 and a fourth screw (not shown in the figure), and the length of the fourth screw is greater than the thickness of the fourth plate body 140.

[0084] In some preferred embodiments, as Figure 5 - Figure 6 shown, the first fixing member includes a first fixing plate (not shown in the figure) and is connected to the first limiting plate 111, and is arranged at an angle. More preferably, the two are perpendicular to each other; the second fixing member includes a second fixing plate 124 and is connected to the second limiting plate 121, and is arranged at an angle. More preferably, the two are perpendicular to each other.

[0085] In some preferred embodiments, as Figure 5 - Figure 6 shown, the third fixing member includes a third fixing plate 134 and is connected to the third limiting plate 131, and is arranged at an angle. More preferably, the two are perpendicular to each other; the fourth fixing member includes a fourth fixing plate 144 and is connected to the fourth limiting plate 141, and is arranged at an angle. More preferably, the two are perpendicular to each other.

[0086] In some preferred embodiments, the first fixing plate is serrated, and the serration length is 1 / 2 of the first gap. The second fixing plate 124 is serrated, and the serration length is 1 / 2 of the first gap; the serrations of the first fixing plate and the second fixing plate are staggered.

[0087] In some preferred embodiments, the third fixing plate 134 is serrated, and the serration length is 1 / 2 of the second gap. The fourth fixing plate 144 is serrated, and the serration length is 1 / 2 of the second gap; the serrations of the third fixing plate 134 and the fourth fixing plate 144 are staggered.

[0088] In some preferred embodiments, referring to Figure 5 , if the minimum height of the third through hole and the fourth through hole is set as h1, then the width of the first gap 200 is less than h1. Further, if the closest distance between the third through hole and the fourth through hole and the first end 150 is set as a; then the length of at least one of the first fixing plate and the second fixing plate is greater than a.

[0089] By adopting the above technical solution, when the fixing plate is embedded into the wooden square, the embedding depth of the fixing plate can be observed through the through hole, which is convenient for the user to verify the fixing effect on the wooden square and improves the installation efficiency.

[0090] Similarly, the minimum height of the first through hole and the second through hole can be set as h2, and the width of the second gap 300 is less than h2. Further, let the closest distance between the first through hole and the second through hole to the second end 160 be b; then the length of at least one of the third fixing plate and the fourth fixing plate is greater than b.

[0091] In some other embodiments of the present application, a keel is provided, including:

[0092] The keel support frame 10 as described in the above embodiment,

[0093] A wooden square arranged inside the keel support frame 10 and fixed or limited by the keel support frame 10.

[0094] In some other embodiments of the present application, a preparation method of the keel as described in the above embodiment is provided. The keel includes a keel support frame 10 and a wooden square. The keel support frame 10 is cut from a whole square tube. The method includes the steps:

[0095] S100, designing the cutting position of the square tube. The square tube has a head end and a tail end in its length direction;

[0096] S300, referring to Figure 7 - Figure 8 , cutting the square tube according to the cutting position of the square tube to obtain a plurality of keel support frame precursors 11 connected end to end. The keel support frame precursors 11 include a first limiting plate 111 in the same plane as the first plate body 110, a second limiting plate 121 in the same plane as the second plate body 120, a third limiting plate 131 in the same plane as the third plate body 130, and a fourth limiting plate 141 in the same plane as the fourth plate body 140;

[0097] S500, separating the plurality of keel support frame precursors, and placing wooden squares with appropriate lengths into the inner cavities of each keel support frame precursor;

[0098] S700, bending the first limiting plate 111, the second limiting plate 121, the third limiting plate 131, and the fourth limiting plate 141 of each keel support frame precursor to limit the internal wooden square;

[0099] Among them, in the step of designing the cutting position of the square tube, it includes: setting corresponding first cutting lines 115 and second cutting lines 125 on the first plate body 110 and the second plate body 120. Both extend from the third plate body to the fourth plate body and are located in the first plane; corresponding third cutting lines 135 and fourth cutting lines 145 are set on the third plate body 130 and the fourth plate body 140. Both extend from the first plate body to the second plate body and are located in the second plane; the first plane and the second plane are parallel to each other.

[0100] With the above technical solution, through the design of the cutting position, the adjacent front bodies of the keel support frames can be formed after one cutting, and the adjacent parts will not waste the base material. While ensuring the simplicity of the process, the loss of the base material is reduced.

[0101] In some preferred embodiments, the method further includes the steps of:

[0102] Referring to Figure 9 , bend the first limiting plate 111 and the second limiting plate 121 by 90°, and connect them to each other. Cut along their joint line to make the first limiting plate 111 and the second limiting plate 121 form ends with serrations. Bend this end (at the dotted line shown in the figure) to form the first fixing plate and the second fixing plate 124.

[0103] Similarly, the method further includes the steps of:

[0104] Bend the third limiting plate and the fourth limiting plate by 90°, and connect them to each other. Cut along their joint line to make the third limiting plate and the fourth limiting plate form ends with serrations. Bend this end to form the third fixing plate and the fourth fixing plate.

[0105] With the above technical solution, when preparing the fixing plates, the production of two fixing plates can be completed through one process, with a simple process and saving of the base material.

[0106] In summary, a keel support frame, a keel and a preparation method thereof provided by the present application directly form a limiting structure through the limiting plates extending from the support frame body, have a good fixing effect on the internal wooden square, have a simple production process, less material waste, and do not require the setting of additional structures, and have good application and popularization value.

[0107] It should be noted that for those of ordinary skill in the art, the technical features in the above embodiments can be freely combined, and the formed technical solutions also belong to the embodiments disclosed in the present application.

[0108] Furthermore, on the premise of not departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A keel support frame, characterized in that: include: A support frame body, the support frame body having a first plate body and a second plate body that are arranged opposite to each other, and a third plate body and a fourth plate body that are arranged opposite to each other, the third plate body is connected to the first plate body and the second plate body respectively, and the fourth plate body is connected to the first plate body and the second plate body respectively; The first plate body, the second plate body, the third plate body and the fourth plate body form an inner cavity for placing wood blocks; The support frame body has a first end and a second end that are arranged opposite to each other in the length direction, and the first plate body and the second plate body are respectively connected to the first limit plate and the second limit plate at the first end; the third plate body and the fourth plate body are respectively connected to the third limit plate and the fourth limit plate at the second end; The first limiting plate extends from the first plate body to the second plate body, and the second limiting plate extends from the second plate body to the first plate body; the third limiting plate extends from the third plate body to the fourth plate body, and the fourth limiting plate extends from the fourth plate body to the third plate body; A first gap is formed between the first limiting plate and the second limiting plate; a second gap is formed between the third limiting plate and the fourth limiting plate.

2. The keel support frame according to claim 1, characterized in that: The first gap is at the same distance from the first plate body and the second plate body, and the width of the first gap does not exceed 1 / 4 of the first limiting plate and the second limiting plate; The distance between the second gap and the third plate body and the fourth plate body is the same, and the width of the second gap does not exceed 1 / 4 of the width of the third limiting plate and the fourth limiting plate.

3. The keel support frame according to claim 1, characterized in that: The first plate body is provided with at least one first through hole, and the second plate body is provided with at least one second through hole; the first through hole and the second through hole are provided correspondingly.

4. The keel support frame according to claim 1, characterized in that: A first fixing member is disposed at one end of the first limiting plate away from the first plate body, and a second fixing member is disposed at one end of the second limiting plate away from the second plate body; and / or, One end of the third limiting plate away from the third plate body is connected to a third fixing member, and / or one end of the fourth limiting plate away from the fourth plate body is connected to a fourth fixing member.

5. The keel support frame according to claim 4, characterized in that: The first fixing member includes a screw hole and a screw, and the length of the screw is greater than the thickness of the first plate; the second fixing member includes a screw hole and a screw, and the length of the screw is greater than the thickness of the second plate; and / or, The third fixing member includes a screw hole and a screw, and the length of the screw is greater than the thickness of the third plate; and / or the fourth fixing member includes a screw hole and a screw, and the length of the screw is greater than the thickness of the fourth plate.

6. The keel support frame according to claim 4, characterized in that: The first fixing member is connected to the first limiting plate and is arranged at an angle; the second fixing member is connected to the second limiting plate and is arranged at an angle; and / or, The third fixing member is connected to the third limiting plate and is arranged at an angle; the fourth fixing member is connected to the fourth limiting plate and is arranged at an angle.

7. The keel support frame according to claim 6, characterized in that: The first limiting plate is sawtooth-shaped, and the second limiting plate is sawtooth-shaped; the sawteeth of the first limiting plate and the second limiting plate are arranged in a staggered manner.

8. The keel support frame according to claim 7, characterized in that: The sawtooth length of the first limiting plate is 1 / 2 of the first gap; the sawtooth length of the second limiting plate is 1 / 2 of the first gap.

9. The keel support frame according to any one of claims 1 to 8, characterized in that: The keel support frame is made of zinc-aluminum-magnesium alloy.

10. A keel, characterized in that: include, The keel support frame according to any one of claims 1 to 9, A wooden plank arranged inside the keel support frame and fixed or limited by the keel support frame.

Images