Keel fixing device

Abstract

The utility model discloses a keel fixing device which comprises a hoisting structure, a main keel fixing structure and a pair of auxiliary keel fixing structures, the hoisting structure is detachably connected with the main keel fixing structure through a connecting piece, and the auxiliary keel fixing structures are detachably connected with the main keel fixing structure through connecting parts. The main keel fixing structure comprises a mounting block and an adjusting piece, the mounting block is provided with a mounting notch for a main keel to penetrate through, and the adjusting piece comprises a pair of adjusting plates and a pair of main adjusting screw rods; the secondary keel fixing structure comprises a limiting block and a limiting piece, the limiting block is provided with a limiting notch used for allowing a secondary keel to penetrate through, and the limiting piece comprises a pair of limiting plates and a pair of secondary adjusting screw rods. The problems that main keels of different sizes cannot be adapted, secondary keel fixing devices need to be arranged according to the sizes of the main keels when the secondary keels are installed, and the installation process is complex exist.

Description

Technical Field

[0001] The utility model relates to the technical field of keel fixing, in particular to a keel fixing device. Background Art

[0002] The keel frame is a kind of building structural material used for supporting the shape and fixing the structure when the non-load-bearing ceiling is used. It is used as the skeleton and base material of the building decoration structure. Through the setting of the keel frame, it can facilitate the installation and fixing of the ceiling device components, and play a role in decoration and beautification. The keel frame includes the main keel and the secondary keel. The main keel needs to be fixed on the top of the wall, and the secondary keel needs to be fixed under the main keel. The main keel and the secondary keel cooperate to form the keel frame.

[0003] In the prior art, the main keel is usually fixed to the top of the wall by a hanger. One end of the hanger is nailed into the top of the wall by bolts, and the other end is fixed to a fixing structure sleeved on the main keel to complete the installation of the main keel. When hoisting the main keel, this fixing device has the problem of not being able to adapt to main keels of different sizes. At the same time, when installing the secondary keel, it is also necessary to set the secondary keel fixing device according to the size of the main keel, which complicates the installation process.

[0004] In the utility model with application number: 202220353194.3 and publication number CN217000439U, a ceiling keel fixing device is disclosed, including a block, a limiting component is installed inside the block, an outer wall of one side of the main keel is in contact with the inner surface of the square opening, the square opening is opened in the middle inner wall of the block, and the main keel and the middle inner wall of the block are both provided with square grooves. However, when hoisting the main keel, it still cannot adapt to main keels of different sizes and when installing the secondary keel, it is necessary to set the secondary keel fixing device according to the size of the main keel, and the installation process is complicated. Utility Model Content

[0005] Based on this, in order to address the above problems, the utility model proposes a keel fixing device, which solves the problem that the current keel fixing device cannot adapt to main keels of different sizes when in use and that the secondary keel fixing device needs to be set according to the size of the main keel when installing the secondary keel, resulting in a complicated installation process.

[0006] The technical solution of the utility model is:

[0007] A keel fixing device comprises a hoisting structure, a main keel fixing structure and a pair of secondary keel fixing structures, wherein the hoisting structure is detachably connected to the main keel fixing structure via a connecting piece, and the secondary keel fixing structure is detachably connected to the main keel fixing structure via a connecting portion;

[0008] The main keel fixing structure includes a mounting block and an adjusting member, the mounting block is provided with a mounting slot for the main keel to pass through, the adjusting member includes a pair of adjusting plates and a pair of main adjusting screws, the adjusting plates are arranged in the mounting slots, one end of the main adjusting screws passes through the mounting block and is rotatably connected to the adjusting plates, the main adjusting screws are threadedly connected to the mounting block, the main keel passes through the mounting slots and is adjusted by the adjusting member and fixed in the mounting block;

[0009] The secondary keel fixing structure includes a limit block and a limit piece. The limit block is provided with a limit slot for the secondary keel to pass through. The limit piece includes a pair of limit plates and a pair of secondary adjustment screws. The limit plate is arranged in the limit slot. One end of the secondary adjustment screw passes through the limit block and is rotatably connected to the limit plate. The secondary adjustment screw is threadedly connected to the limit block. The secondary keel passes through the limit slot and is limited by the limit piece and fixed in the limit block.

[0010] Preferably, the hanging structure includes a mounting plate and a hanging rod, the hanging rod is arranged at the bottom of the mounting plate, one end of the hanging rod is fixedly connected to the mounting plate, and the other end is detachably connected to the main keel fixing structure through a connecting piece, and the mounting plate is nailed into the top of the wall by bolts.

[0011] Preferably, the connecting member includes a connecting block, a matching block and a pair of reinforcing ribs, the connecting block is arranged at the bottom of the hanger and fixedly connected to the bottom of the hanger, one end of the reinforcing rib is fixedly connected to the connecting block, and the other end is fixedly connected to the hanger, the matching block is arranged at the top of the mounting block and fixedly connected to the mounting block, the matching block is provided with a plug-in slot for inserting the connecting block, the connecting block can be inserted into the plug-in slot, and is fixedly connected to the plug-in slot by a detachable bolt.

[0012] Preferably, the connecting portion includes a pair of L-shaped fixing blocks, a mounting beam and a pair of inverted U-shaped limiting plates, the fixing blocks are cooperatively arranged at the bottom of the mounting blocks and fixedly connected to the mounting blocks, a through opening for the mounting beam to pass through is formed between the fixing blocks, the mounting beam passes through the through opening and is fixedly connected to the fixing blocks by fixing bolts, the limiting plates are sleeved at both ends of the mounting beam, and a through opening for accommodating the main keel to pass through is formed between the limiting plates and the mounting beam, after the main keel passes through the through opening, the top of the main keel contacts the inner side wall of the top of the limiting plate, the limiting plate and the mounting beam are fixedly connected to the mounting beam by fastening bolts, and the secondary keel fixing structure is respectively fixedly connected to the limiting plates sleeved at both ends of the mounting beam.

[0013] Preferably, the bottom of the limiting plate is fixedly connected to the top of the limiting block.

[0014] Preferably, a fitting layer for increasing friction is provided on the side of the adjustment plate in contact with the main keel, and the fitting layer is fixedly connected to the adjustment plate.

[0015] Preferably, the main adjusting screw is provided with a main adjusting knob for rotating the main adjusting screw, and the main adjusting knob is fixedly connected to one end of the main adjusting screw.

[0016] Preferably, striped protrusions for increasing friction are provided on the side of the limiting plate in contact with the secondary keel.

[0017] Preferably, a secondary adjusting screw is provided with a secondary adjusting knob for rotating the secondary adjusting screw, and the secondary adjusting knob is fixedly connected to one end of the secondary adjusting screw.

[0018] Preferably, a pair of main fixing nuts are provided on the outside of the mounting block, and the main fixing nuts are arranged at the threaded connection between the main adjusting screw and the mounting block, and the main fixing nuts are threadedly matched with the main adjusting screw and fixedly connected to the mounting block; a pair of secondary fixing nuts are provided on the outside of the limit block, and the secondary fixing nuts are arranged at the threaded connection between the secondary adjusting screw and the limit block, and the secondary fixing nuts are threadedly matched with the secondary adjusting screw and fixedly connected to the limit block.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] When in use, the hoisting structure is connected to the main keel fixing structure through a connecting piece, the hoisting structure is nailed into the top of the wall, the main keel is passed through the installation slot on the installation block, and the two main adjusting screws are rotated at the same time to make the adjusting plate rotatably connected to the main adjusting screw move in the installation slot on the installation block, so that the adjusting plate can press main keels of different sizes, thereby realizing the installation of main keels of different sizes, and the secondary keel fixing structure is detachably connected to the main keel fixing structure through a connecting part, so that the secondary keel fixing structure and the main keel fixing structure can be connected through the connecting part to form an integrated structure, and the secondary keel is passed through the limiting slot on the limiting block, and the two secondary adjusting screws are rotated at the same time to make the limiting plate rotatably connected to the secondary adjusting screw move in the limiting slot on the limiting block, thereby realizing the limiting plate pressing secondary keels of different sizes, thereby realizing the installation of secondary keels of different sizes, and solving the problem that the current keel fixing device cannot adapt to main keels of different sizes when in use, and the secondary keel fixing device needs to be set according to the size of the main keel when installing the secondary keel, and the installation process is complicated. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a keel fixing device described in an embodiment of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the hoisting structure described in the embodiment of the utility model;

[0023] Figure 3It is a structural schematic diagram of the main keel fixing structure described in the embodiment of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the secondary keel fixing structure and the connecting part described in the embodiment of the utility model;

[0025] Figure 5 It is a schematic diagram of the installation structure of a keel fixing device described in an embodiment of the utility model;

[0026] Description of reference numerals:

[0027] 10-hoisting structure, 11-installation plate, 12-hanging rod, 20-main keel fixing structure, 21-installation block, 22-adjustment piece, 200-installation slot, 201-adjustment plate, 202-main adjustment screw, 203-fitting layer, 204-main adjustment knob, 205-main fixing nut, 30-secondary keel fixing structure, 31-limiting block, 32-limiting piece, 300-limiting slot, 301-limiting plate, 30 2-secondary adjusting screw, 303-striped protrusion, 304-secondary adjusting knob, 305-secondary fixing nut, 40-connecting piece, 41-connecting block, 42-matching block, 43-reinforcement rib, 44-removable bolt, 400-plug-in slot, 50-connecting part, 51-fixing block, 52-mounting beam, 53-limiting plate, 500-through port, 501-fixing bolt, 502-through port, 503-fastening bolt. DETAILED DESCRIPTION

[0028] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0029] Example:

[0030] like Figures 1 to 5 As shown, in order to solve the above problems, this embodiment discloses a keel fixing device, including a hoisting structure 10, a main keel fixing structure 20 and a pair of secondary keel fixing structures 30, wherein the hoisting structure 10 is detachably connected to the main keel fixing structure 20 via a connecting member 40, and the secondary keel fixing structure 30 is detachably connected to the main keel fixing structure 20 via a connecting portion 50;

[0031] The main keel fixing structure 20 includes a mounting block 21 and an adjusting member 22. The mounting block 21 is provided with a mounting slot 200 for the main keel to pass through. The adjusting member 22 includes a pair of adjusting plates 201 and a pair of main adjusting screws 202. The adjusting plate 201 is arranged in the mounting slot 200. One end of the main adjusting screw 202 passes through the mounting block 21 and is rotatably connected to the adjusting plate 201. The main adjusting screw 202 is threadedly connected to the mounting block 21. The main keel passes through the mounting slot 200 and is adjusted by the adjusting member 22 and fixed in the mounting block 21.

[0032] The secondary keel fixing structure 30 includes a limit block 31 and a limit member 32. The limit block 31 is provided with a limit slot 300 for the secondary keel to pass through. The limit member 32 includes a pair of limit plates 301 and a pair of secondary adjustment screws 302. The limit plate 301 is arranged in the limit slot 300. One end of the secondary adjustment screw 302 passes through the limit block 31 and is rotatably connected to the limit plate 301. The secondary adjustment screw 302 is threadedly connected to the limit block 31. The secondary keel passes through the limit slot 300 and is limited by the limit member 32 and is fixed in the limit block 31.

[0033] When in use, the hanging structure 10 is connected to the main keel fixing structure 20 through the connecting piece 40, the hanging structure 10 is nailed into the top of the wall, the main keel is passed through the mounting slot 200 on the mounting block 21, and the two main adjusting screws 202 are rotated at the same time to make the adjusting plate 201 rotatably connected to the main adjusting screws 202 move in the mounting slot 200 on the mounting block 21, so that the adjusting plate 201 can press main keels of different sizes, thereby realizing the installation of main keels of different sizes, and the secondary keel fixing structure 30 is detachably connected to the main keel fixing structure 20 through the connecting part 50, so that the secondary keel fixing structure 30 and the main keel fixing structure 20 are connected. The fixing structure 20 can be connected through the connecting part 50 to form an integrated structure, and the secondary keel is passed through the limiting groove 300 on the limiting block 31. By rotating the two secondary adjusting screws 302 at the same time, the limiting plate 301 rotatably connected to the secondary adjusting screws 302 moves in the limiting groove 300 on the limiting block 31, so that the limiting plate 301 can press secondary keels of different sizes, thereby realizing the installation of secondary keels of different sizes, which solves the problem that the current keel fixing device cannot adapt to main keels of different sizes when in use and the secondary keel fixing device needs to be set according to the size of the main keel when installing the secondary keel, which makes the installation process complicated.

[0034] like Figure 2 As shown, in order to make the keel fixing device less likely to fall off after being nailed into the top of the wall, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that the hanging structure 10 includes a mounting plate 11 and a hanging rod 12, and the hanging rod 12 is arranged at the bottom of the mounting plate 11. One end of the hanging rod 12 is fixedly connected to the mounting plate 11, and the other end is detachably connected to the main keel fixing structure 20 through a connecting piece 40. The mounting plate 11 is nailed into the top of the wall by bolts.

[0035] When in use, the mounting plate 11 can be nailed into the top of the wall by means of a plurality of bolts, so that the weight of the keel is shared by the plurality of bolts, thereby making it difficult for the bolts to fall off from the top of the wall.

[0036] like Figures 2 to 4As shown, in order to better realize the detachable connection between the lifting structure 10 and the main keel fixing structure 20 while ensuring the strength of the connection, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that the connecting member 40 includes a connecting block 41, a matching block 42 and a pair of reinforcing ribs 43. The connecting block 41 is arranged at the bottom of the suspension rod 12 and is fixedly connected to the bottom of the suspension rod 12. One end of the reinforcing rib 43 is fixedly connected to the connecting block 41, and the other end is fixedly connected to the suspension rod 12. The matching block 42 is arranged on the top of the mounting block 21 and is fixedly connected to the mounting block 21. The matching block 42 is provided with a plug-in slot 400 for inserting the connecting block 41. The connecting block 41 can be inserted into the plug-in slot 400 and is fixedly connected to the plug-in slot 400 by a detachable bolt 44.

[0037] Preferably, the removable bolt 44 is a high-strength bolt assembly including a fastening screw, a fastening nut and two washers.

[0038] When in use, the connection block 41 is inserted into the insertion slot 400 , and then the fixed connection between the lifting structure 10 and the main keel fixing structure 20 is achieved through the high-strength detachable bolts 44 , and the reinforcing ribs 43 play a role in strengthening the connection between the connection block 41 and the suspension rod 12 .

[0039] Preferably, welding is used between the suspension rod 12 and the connection block 41 , and welding is used between the two ends of the reinforcement rib 43 and the suspension rod 12 and the connection block 41 .

[0040] like Figure 3 to Figure 4 As shown, in order to better realize the connection between the secondary keel fixing structure 30 and the main keel fixing structure 20 and ensure the strength of the connection, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that the connecting portion 50 includes a pair of L-shaped fixing blocks 51, a mounting crossbeam 52 and a pair of inverted U-shaped limiting plates 53. The fixing blocks 51 are cooperatively arranged at the bottom of the mounting block 21 and are fixedly connected to the mounting block 21. A through hole 500 for the mounting crossbeam 52 to pass through is formed between the fixing blocks 51. The mounting crossbeam 52 is provided to pass through the fixing blocks 51. The beam 52 passes through the through opening 500 and is fixedly connected to the fixing block 51 by fixing bolts 501. The limiting plate 53 is sleeved on both ends of the mounting beam 52, and a passage opening 502 is formed between the limiting plate 53 and the mounting beam 52 to accommodate the passage of the main keel. After the main keel passes through the passage opening 502, the top of the main keel contacts the inner side wall of the top of the limiting plate 53. The limiting plate 53 is fixedly connected to the mounting beam 52 by fastening bolts 503. The secondary keel fixing structure 30 is respectively fixedly connected to the limiting plates 53 sleeved on both ends of the mounting beam 52.

[0041] Preferably, the bottom of the limiting plate 53 is fixedly connected to the top of the limiting block 31 .

[0042] When in use, the mounting beam 52 is passed through the through opening 500, and then the mounting beam 52 is fixedly connected to the fixing block 51 by the fixing bolts 501, and then the limiting plate 53 is sleeved on both ends of the mounting beam 52 and fixedly connected to the mounting beam 52 by tightening the bolts 503, and then the bottom of the limiting plate 53 is fixedly connected to the top of the limit block 31, thereby realizing the connection between the secondary keel fixing structure 30 and the main keel fixing structure 20, and an inverted U-shaped through-hole 502 is formed between the limiting plate 53 and the mounting beam 52 to accommodate the main keel. After the main keel passes through the through-hole 502, the top of the main keel contacts the inner side wall of the top of the limiting plate 53, so that the weight of the secondary keel is transferred to the main keel by the limiting plate 53, and the mounting beam 52 can also play a role in sharing a certain weight of the secondary keel.

[0043] Preferably, the fastening bolt member 503 includes at least four bolts.

[0044] In order to increase the friction between the main keel and the adjustment plate 201, and thereby better fix the main keel, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that a bonding layer 203 for increasing friction is provided on the side of the adjustment plate 201 that contacts the main keel, and the bonding layer 203 is fixedly connected to the adjustment plate 201.

[0045] Preferably, the bonding layer 203 may be made of a flexible rubber material, and irregular patterns may be arranged on the surface.

[0046] When in use, the fitting layer 203 made of the flexible rubber material can not only fit the side of the main keel better, but also can reduce the vibration of the main keel to a certain extent when the wall vibrates.

[0047] In order to facilitate the rotation of the main adjusting screw 202, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that the main adjusting screw 202 is provided with a main adjusting knob 204 for rotating the main adjusting screw 202. The main adjusting knob 204 is fixedly connected to one end of the main adjusting screw 202. When in use, the main adjusting knob 204 can be directly rotated by hand.

[0048] In order to increase the friction between the secondary keel and the limiting plate 301, and thus better fix the secondary keel, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that a striped protrusion 303 for increasing friction is provided on the side where the limiting plate 301 contacts the secondary keel.

[0049] Preferably, the striped protrusions 303 are made of flexible rubber material.

[0050] When in use, the striped protrusions 303 can not only increase the friction force, but also reduce a certain vibration.

[0051] like Figure 1 As shown, in order to facilitate the rotation of the secondary adjusting screw 302, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that the secondary adjusting screw 302 is provided with a secondary adjusting knob 304 for rotating the secondary adjusting screw 302, and the secondary adjusting knob 304 is fixedly connected to one end of the secondary adjusting screw 302. When in use, the secondary adjusting knob 304 can be directly rotated by hand.

[0052] like Figure 3 to Figure 4 As shown, in order to facilitate better fixing of the adjustment plate 201 and the limiting plate 301, thereby achieving better fixing of the main keel and the secondary keel, this embodiment is modified on the basis of the above embodiment, and the difference from the above embodiment is that a pair of main fixing nuts 205 are provided on the outside of the mounting block 21, and the main fixing nuts 205 are arranged at the threaded connection between the main adjusting screw 202 and the mounting block 21, and the main fixing nuts 205 are threadedly matched with the main adjusting screw 202 and fixedly connected to the mounting block 21; a pair of secondary fixing nuts 305 are provided on the outside of the limiting block 31, and the secondary fixing nuts 305 are arranged at the threaded connection between the secondary adjusting screw 302 and the limiting block 31, and the secondary fixing nuts 305 are threadedly matched with the secondary adjusting screw 302 and fixedly connected to the limiting block 31. When in use, the main fixing nuts 205 can cooperate with the mounting block 21 to better fix the main adjusting screw 202, and the secondary fixing nuts 305 can cooperate with the limiting block 31 to better fix the secondary adjusting screw 302.

[0053] like Figure 5 As shown, the keel fixing devices need to be used in combination to combine the main keel with the secondary keel to form a keel frame.

[0054] Working principle of this utility model:

[0055] When in use, the hanging structure 10 is connected to the main keel fixing structure 20 through the connecting piece 40, the hanging structure 10 is nailed into the top of the wall, the main keel is passed through the installation slot 200 on the installation block 21, and the two main adjusting screws 202 are rotated at the same time to make the adjusting plate 201 rotatably connected with the main adjusting screws 202 move in the installation slot 200 on the installation block 21, so that the adjusting plate 201 can press the main keels of different sizes, thereby realizing the installation of main keels of different sizes, and the secondary keel fixing structure 30 is connected to the main keel. The keel fixing structure 20 is detachably connected via the connecting portion 50, so that the secondary keel fixing structure 30 and the main keel fixing structure 20 can be connected via the connecting portion 50 to form an integrated structure, and the secondary keel is passed through the limiting slot 300 on the limiting block 31, and the two secondary adjusting screws 302 are rotated at the same time, so that the limiting plate 301 rotatably connected to the secondary adjusting screws 302 moves in the limiting slot 300 on the limiting block 31, thereby realizing the limiting plate 301 pressing secondary keels of different sizes, thereby realizing the installation of secondary keels of different sizes.

[0056] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A keel fixing device, characterized in that: The invention comprises a hoisting structure (10), a main keel fixing structure (20) and a pair of secondary keel fixing structures (30), wherein the hoisting structure (10) and the main keel fixing structure (20) are detachably connected via a connecting piece (40), and the secondary keel fixing structure (30) and the main keel fixing structure (20) are detachably connected via a connecting portion (50); The main keel fixing structure (20) comprises a mounting block (21) and an adjusting member (22); the mounting block (21) is provided with a mounting slot (200) for the main keel to pass through; the adjusting member (22) comprises a pair of adjusting plates (201) and a pair of main adjusting screws (202); the adjusting plates (201) are arranged in the mounting slot (200); one end of the main adjusting screw (202) passes through the mounting block (21) and is rotatably connected to the adjusting plate (201); the main adjusting screw (202) is threadedly connected to the mounting block (21); the main keel passes through the mounting slot (200) and is adjusted by the adjusting member (22) and is fixed in the mounting block (21); The secondary keel fixing structure (30) comprises a limiting block (31) and a limiting member (32); the limiting block (31) is provided with a limiting slot (300) for the secondary keel to pass through; the limiting member (32) comprises a pair of limiting plates (301) and a pair of secondary adjustment screws (302); the limiting plate (301) is arranged in the limiting slot (300); one end of the secondary adjustment screw (302) passes through the limiting block (31) and is rotatably connected to the limiting plate (301); the secondary adjustment screw (302) is threadedly connected to the limiting block (31); the secondary keel passes through the limiting slot (300) and is limited by the limiting member (32) and is fixed in the limiting block (31).

2. A keel fixing device according to claim 1, characterized in that: The hanging structure (10) comprises a mounting plate (11) and a hanging rod (12); the hanging rod (12) is arranged at the bottom of the mounting plate (11); one end of the hanging rod (12) is fixedly connected to the mounting plate (11); the other end of the hanging rod (12) is detachably connected to the main keel fixing structure (20) via a connecting piece (40); and the mounting plate (11) is nailed into the top of the wall via bolts.

3. A keel fixing device according to claim 2, characterized in that: The connecting member (40) includes a connecting block (41), a matching block (42) and a pair of reinforcing ribs (43); the connecting block (41) is arranged at the bottom of the suspension rod (12) and is fixedly connected to the bottom of the suspension rod (12); one end of the reinforcing rib (43) is fixedly connected to the connecting block (41) and the other end is fixedly connected to the suspension rod (12); the matching block (42) is arranged at the top of the mounting block (21) and is fixedly connected to the mounting block (21); a plug-in slot (400) for inserting the connecting block (41) is provided on the matching block (42); the connecting block (41) can be inserted into the plug-in slot (400) and is fixedly connected to the plug-in slot (400) by a detachable bolt (44).

4. A keel fixing device according to claim 2 or 3, characterized in that: The connecting portion (50) comprises a pair of L-shaped fixing blocks (51), a mounting crossbeam (52) and a pair of inverted U-shaped limiting plates (53); the fixing blocks (51) are arranged at the bottom of the mounting block (21) and are fixedly connected to the mounting block (21); a through hole (500) for the mounting crossbeam (52) to pass through is formed between the fixing blocks (51); the mounting crossbeam (52) passes through the through hole (500) and is fixedly connected to the fixing block (51) by a fixing bolt (501); the limiting plates (53) are ) are sleeved on both ends of the mounting crossbeam (52), and a passage opening (502) for accommodating the passage of the main keel is formed between the limiting plate (53) and the mounting crossbeam (52). After the main keel passes through the passage opening (502), the top of the main keel contacts the inner side wall of the top of the limiting plate (53). The limiting plate (53) and the mounting crossbeam (52) are fixedly connected to the mounting crossbeam (52) by fastening bolts (503). The secondary keel fixing structure (30) is respectively fixedly connected to the limiting plates (53) sleeved on both ends of the mounting crossbeam (52).

5. A keel fixing device according to claim 4, characterized in that: The bottom of the limiting plate (53) is fixedly connected to the top of the limiting block (31).

6. A keel fixing device according to claim 1, characterized in that: A fitting layer (203) for increasing friction is provided on the side of the adjustment plate (201) in contact with the main keel, and the fitting layer (203) is fixedly connected to the adjustment plate (201).

7. A keel fixing device according to claim 1, characterized in that: The main adjusting screw (202) is provided with a main adjusting knob (204) for rotating the main adjusting screw (202), and the main adjusting knob (204) is fixedly connected to one end of the main adjusting screw (202).

8. A keel fixing device according to claim 1, characterized in that: The side of the limiting plate (301) in contact with the secondary keel is provided with a striped protrusion (303) for increasing friction.

9. A keel fixing device according to claim 1, characterized in that: The secondary adjusting screw (302) is provided with a secondary adjusting knob (304) for rotating the secondary adjusting screw (302), and the secondary adjusting knob (304) is fixedly connected to one end of the secondary adjusting screw (302).

10. A keel fixing device according to claim 1, characterized in that: A pair of main fixing nuts (205) are provided on the outside of the mounting block (21), and the main fixing nuts (205) are arranged at the threaded connection between the main adjusting screw (202) and the mounting block (21). The main fixing nuts (205) are threadedly matched with the main adjusting screw (202) and are fixedly connected to the mounting block (21); a pair of secondary fixing nuts (305) are provided on the outside of the limiting block (31), and the secondary fixing nuts (305) are arranged at the threaded connection between the secondary adjusting screw (302) and the limiting block (31). The secondary fixing nuts (305) are threadedly matched with the secondary adjusting screw (302) and are fixedly connected to the limiting block (31).

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