Locking fixture for a ship section straight ladder

Abstract

The present application relates to the technical fields of straight ladder locking, in particular to a locking and fixing device for ship section straight ladder, which comprises a straight ladder body and a gravity box, further comprising: two movable blocks movably connected on the top of the gravity box, the other end of the movable block is fixedly connected with a supporting plate, the top of one end of the supporting plate is hingedly connected with a supporting rod, the other end of the supporting rod is fixedly connected with a clamping block for clamping and fixing the straight ladder body; the present application can clamp and lock straight ladder bodies of different widths, thereby improving the applicability, and before locking, the inclination angle of the straight ladder body when placed can drive the supporting rod and the clamping block to deflect, so that the inclination angle of the clamping block and the straight ladder body is adapted, thereby facilitating the fixing, and the abutting plate can also be driven to contact the ground, thereby improving the stability of the gravity box when locking and fixing the straight ladder body, preventing it from moving randomly.

Description

Technical Field

[0001] This invention relates to the field of straight ladder locking technology, specifically a locking and fixing device for a segmented straight ladder on a ship. Background Technology

[0002] With the continuous development of the shipbuilding and steel structure industry, most shipyards now frequently need to erect straight ladders for workers to climb up and down the outer bottom plates of hull sections during the sectional construction process. To ensure the safety of construction workers, the upper end of the straight ladder is typically welded to the outer bottom plate of the hull section to prevent slippage or tipping and potential injury. Alternatively, iron chains can be installed on the straight ladder, with one end fixed to the ladder and the other end secured to the outer bottom plate of the hull section using clamps.

[0003] However, the above-described method has the following problems:

[0004] 1. Using welding to fix the straight ladder involves welding operations during both installation and dismantling, which is inconvenient for rapid installation and results in low efficiency. Furthermore, weld spatters remain after dismantling, causing unnecessary cleaning work.

[0005] 2. The method of fixing with iron chains cannot guarantee that the iron chains will always be taut during use, which will cause the ladder to sway when construction workers go up and down, posing a risk of the ladder falling off. Summary of the Invention

[0006] The purpose of this invention is to provide a locking and fixing device for a segmented straight ladder of a ship, so as to solve the problems existing in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a locking and fixing device for a segmented ship ladder, comprising a ladder body and a gravity box, and further comprising:

[0008] Movable blocks are connected to both sides of the top of the gravity box. A support plate is fixedly connected to the other end of the movable block. A support rod is hinged to the top of one end of the support plate. A clamping block for clamping and fixing the straight ladder body is fixedly connected to the other end of the support rod.

[0009] An adjustment structure located inside the support plate and used to drive the support rod to deflect at an angle.

[0010] A drive structure located at the middle position on the top of the gravity box and used to move the two movable blocks.

[0011] A first fixing plate and a second fixing plate are respectively fixed on the upper and lower sides of the left and right sides of the straight ladder body. The first fixing plate is rotatably connected to the inside of the first fixing plate. The surface of the first screw is threadedly connected to the fixing sleeve. The surface of the fixing sleeve is movably connected to the inside of the second fixing plate. The other end of the fixing sleeve extends to the lower part of the second fixing plate and is fixed with a stop plate.

[0012] A force-applying structure disposed on the surface of the gravity box and used to drive the two first screws to rotate.

[0013] Preferably, the drive structure includes a first motor located at the top center of the surface of the gravity box, a gear disk fixed to the output shaft of the first motor, and rack plates movably connected to both sides inside the gravity box. The front and rear rack plates are meshed with the front and rear sides of the gear disk on opposite sides, and one end of the rack plate is fixed to one side of the movable block.

[0014] Preferably, the adjustment structure includes a second motor disposed on the outside of the support plate, a second screw fixed to the output shaft of the second motor, a movable block threadedly connected to the surface of the second screw, and a connecting rod with both ends hinged between the movable block and the support rod, wherein the other end of the second screw is rotatably connected to the inner wall of the support plate.

[0015] Preferably, the force-applying structure includes a third motor mounted on the surface of the gravity box, a double-groove drive wheel fixed to the output shaft of the third motor, two driven wheels connected by a belt, a rotating rod fixed to one side of the driven wheels, a first bevel gear fixed to the other end of the rotating rod, and a second bevel gear fixed to the top of the first screw, wherein the bottom of the first bevel gear meshes with the other side of the second bevel gear.

[0016] Preferably, a slider is fixedly connected to the side of the rack plate near the inner wall of the gravity box, and the surface of the slider is slidably connected to the inner wall of the gravity box.

[0017] Preferably, limit grooves are provided on both sides of the inner cavity of the support plate, and limit blocks are fixedly connected to both sides of the movable block, with the surface of the limit block slidingly connected to the inside of the limit groove.

[0018] Preferably, the front and rear sides of the second fixing plate are movably connected to limit rods, and the bottom end of the limit rod is fixed to the top of the abutment plate.

[0019] Preferably, the bottom of the abutment is fixed with a plurality of anti-slip protrusions, and the anti-slip protrusions are arranged at equal intervals.

[0020] Preferably, the inner side of the card block is provided with a soft pad, and the soft pad is made of rubber.

[0021] Preferably, a limiting plate is fixedly connected to the front of both the left and right sides of the gravity box, and the interior of the limiting plate is rotatably connected to the surface of the rotating rod.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] This invention utilizes a locking block above the gravity box to move both sides of the straight ladder body, thus clamping and locking ladder bodies of different widths, thereby improving applicability. Before locking, the support rod and locking block can be angularly deflected according to the tilt angle of the straight ladder body, so that the locking block matches the tilt angle of the straight ladder body, facilitating its fixation. At the same time, the threaded connection between the first screw and the fixing sleeve can drive the abutment plate to contact the ground, thereby improving the stability of the gravity box when locking and fixing the straight ladder body and preventing it from moving arbitrarily. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the left-side stereoscopic structure of the present invention;

[0026] Figure 3 This is a bottom-view structural diagram of the present invention;

[0027] Figure 4 This is a partial top-view cross-sectional structural diagram of the present invention;

[0028] Figure 5 This is a partial structural diagram of the present invention;

[0029] Figure 6 This is a partial structural diagram of the present invention;

[0030] Figure 7 For the present invention Figure 3 A magnified view of a portion of point A in the middle.

[0031] In the diagram: 1. Straight ladder body; 2. Gravity box; 3. Movable block; 4. Support plate; 5. Drive structure; 51. First motor; 52. Gear disk; 53. Rack plate; 6. Slider; 7. Support rod; 8. Locking block; 9. Adjustment structure; 91. Second motor; 92. Second screw; 93. Moving block; 94. Connecting rod; 10. Limiting groove; 11. Limiting block; 12. First fixing plate; 13. Second fixing plate; 14. First screw; 15. Fixing sleeve; 16. Abutment plate; 17. Force application structure; 171. Third motor; 172. Double-groove driving wheel; 173. Driven wheel; 174. Rotating rod; 175. First bevel gear; 176. Second bevel gear; 18. Limiting rod; 19. Anti-slip ridge; 20. Soft pad; 21. Limiting plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1-7 A locking and fixing device for a segmented ship ladder includes a ladder body 1 and a gravity box 2. Movable blocks 3 are movably connected to both sides of the top of the gravity box 2. A support plate 4 is fixedly connected to the other end of the movable blocks 3. A support rod 7 is hinged to the top of one end of the support plate 4. A clamping block 8 for clamping and fixing the ladder body 1 is fixedly connected to the other end of the support rod 7. An adjustment structure 9 for driving the support rod 7 to deflect at an angle is provided inside the support plate 4. A driving structure 5 for moving the two movable blocks 3 is provided at the middle position of the top of the gravity box 2. A first fixing plate 12 and a second fixing plate 13 are fixed above and below the left and right sides of the ladder body 1, respectively. A first screw 14 is rotatably connected inside the first fixing plate 12. A fixing sleeve 15 is threadedly connected to the surface of the first screw 14. The surface of the fixing sleeve 15 is movably connected to the inside of the second fixing plate 13. The other end of the fixing sleeve 15 extends to the bottom of the second fixing plate 13 and is fixed with a stop plate 16. A force-applying structure 17 for driving the two first screws 14 to rotate is provided on the surface of the gravity box 2.

[0034] The drive structure 5 includes a first motor 51, a gear disk 52, and rack plates 53. The first motor 51 is located at the middle of the top surface of the gravity box 2. The output shaft of the first motor 51 extends into the interior of the gravity box 2 and is fixed to one side of the gear disk 52. There are two rack plates 53, and their two opposing sides are engaged with the front and rear sides of the gear disk 52. One end of the rack plate 53 is fixed to one side of the movable block 3. Thus, when it is necessary to move the movable block 3, the first motor 51 can be started, and the gear disk 52 can be rotated. At the same time, the two rack plates 53 can be moved to opposite sides, which facilitates the application of force to move the two movable blocks 3, so as to facilitate the subsequent fixing of the straight ladder body 1 of different widths.

[0035] The adjustment structure 9 includes a second motor 91, a second screw 92, a moving block 93, and a connecting rod 94. The second motor 91 is located on the outside of the support plate 4. The output shaft of the second motor 91 is fixed to one end of the second screw 92, and the other end of the second screw 92 is rotatably connected to the inner wall of the support plate 4. The surface of the second screw 92 is threadedly connected to the inside of the moving block 93. The two ends of the connecting rod 94 are hinged to the moving block 93 and the support rod 7, respectively. When the tilt angle of the straight ladder body 1 changes, the second motor 91 can be started, which drives the second screw 92 to rotate and simultaneously drives the moving block 93 to move, thereby applying force to the connecting rod 94 and causing the support rod 7 to deflect at an angle, so as to fix the straight ladder body 1 at different tilt angles.

[0036] The force-applying structure 17 includes a third motor 171, a double-grooved drive wheel 172, a driven wheel 173, a rotating rod 174, a first bevel gear 175, and a second bevel gear 176. The third motor 171 is mounted on the surface of the gravity box 2. The output shaft of the third motor 171 is fixed to one side of the double-grooved drive wheel 172. The left and right sides of the double-grooved drive wheel 172 are respectively connected to the two driven wheels 173 via belts. One end of the rotating rod 174 is fixed to one side of the driven wheel 173, and the other end of the rotating rod 174 is fixed to one side of the first bevel gear 175. The first bevel gear 175 is fixed to the other side of the second bevel gear 176. The second bevel gear 176 is fixed to the top of the first screw 14. When it is necessary to drive the two first screws 14 to rotate, the third motor 171 can be started and the double-groove drive wheel 172 can be driven to rotate. At the same time, the two driven wheels 173 are driven to rotate together through the belt, and the rotating rod 174 and the first bevel gear 175 are driven to rotate. Then the second bevel gear 176 is driven to rotate, so that the two first screws 14 can be rotated by force.

[0037] A slider 6 is fixedly connected to the side of the rack plate 53 near the inner wall of the gravity box 2. The surface of the slider 6 is slidably connected to the inner wall of the gravity box 2, which can provide auxiliary support for the rack plate 53 and maintain its stability when moving.

[0038] Limiting grooves 10 are provided on both sides of the inner cavity of the support plate 4, and limiting blocks 11 are fixedly connected to both sides of the moving block 93. The surface of the limiting block 11 is slidably connected to the inside of the limiting groove 10, so as to provide auxiliary limiting for the moving block 93 and facilitate its forward and backward movement.

[0039] The front and rear sides of the second fixed plate 13 are movably connected to limit rods 18. The bottom end of the limit rod 18 is fixed to the top of the abutment plate 16, which can assist in limiting the fixed sleeve 15 and facilitate its up and down movement.

[0040] The bottom of the abutment 16 is fixed with several anti-slip protrusions 19, and the anti-slip protrusions 19 are arranged at equal intervals. In this way, after the abutment 16 comes into contact with the ground, the friction between the abutment and the ground can be increased, thereby improving the fixing effect.

[0041] The inner side of the clamping block 8 is provided with a soft pad 20, which is made of rubber. This not only protects the surface of the clamped ladder body 1, but also increases the friction between the clamping block and the ladder body 1, thereby improving the clamping effect.

[0042] Limiting plates 21 are fixedly connected to the front of both sides of the gravity box 2. The interior of the limiting plates 21 is rotatably connected to the surface of the rotating rod 174, so as to provide auxiliary support for the rotating rod 174 and maintain its stability during rotation.

[0043] Working principle: When in use, first place the ladder body 1 in the desired position, then move the gravity box 2 to the bottom of the ladder body 1. Next, according to the tilt angle of the ladder body 1, the support rod 7 can be forcefully applied through the adjustment structure 9, causing the support rod 7 to drive the locking block 8 to deflect at an angle until the locking block 8 matches the tilt angle of the ladder body 1. Then, the drive structure 5 can drive the two movable blocks 3 on the left and right to move to opposite sides, and drive the support plate 4 to move together. As the two locking blocks 8 move to opposite sides, they can be locked onto the surface of the ladder body 1 for clamping and fixing. After clamping the ladder body 1, the force application structure 17 can drive the two first screws 14 on the left and right to rotate, and at the same time drive the fixing sleeve 15 to move downward, and drive the abutment plate 16 to move together, so that the abutment plate 16 contacts the ground, thereby fixing the position of the gravity box 2 and preventing it from moving randomly when locking the ladder body 1.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A locking and fixing device for a segmented straight ladder on a ship, comprising a ladder body (1) and a gravity box (2), characterized in that, Also includes: Movable blocks (3) are connected to both sides of the top of the gravity box (2). A support plate (4) is fixedly connected to the other end of the movable block (3). A support rod (7) is hinged to the top of one end of the support plate (4). A clamping block (8) for clamping and fixing the straight ladder body (1) is fixedly connected to the other end of the support rod (7). An adjustment structure (9) is set inside the support plate (4) and is used to drive the support rod (7) to deflect at an angle. The adjustment structure (9) includes a second motor (91) set outside the support plate (4), a second screw (92) fixed to the output shaft of the second motor (91), a moving block (93) threaded to the surface of the second screw (92), and a connecting rod (94) with both ends hinged between the moving block (93) and the support rod (7). The other end of the second screw (92) is rotatably connected to the inner wall of the support plate (4). A drive structure (5) is set at the middle position on the top of the gravity box (2) and is used to drive the two movable blocks (3) to move. The drive structure (5) includes a first motor (51) set at the middle position on the top of the surface of the gravity box (2), a gear disk (52) fixed to the output shaft of the first motor (51), and a rack plate (53) movably connected to both sides inside the gravity box (2). The front and rear rack plates (53) are meshed with the front and rear sides of the gear disk (52) on opposite sides. One end of the rack plate (53) is fixed to one side of the movable block (3). A first fixing plate (12) and a second fixing plate (13) are respectively fixed on the upper and lower sides of the left and right sides of the straight ladder body (1). The first fixing plate (12) is rotatably connected to a first screw (14). The surface of the first screw (14) is threadedly connected to a fixing sleeve (15). The surface of the fixing sleeve (15) is movably connected to the interior of the second fixing plate (13). The other end of the fixing sleeve (15) extends to the lower part of the second fixing plate (13) and is fixed with a stop plate (16). A force-applying structure (17) is provided on the surface of the gravity box (2) and is used to drive the two first screws (14) to rotate. The force-applying structure (17) includes a third motor (171) provided on the surface of the gravity box (2), a double-groove drive wheel (172) fixed to the output shaft of the third motor (171), two driven wheels (173) connected by belt transmission respectively, a rotating rod (174) fixed to one side of the driven wheel (173), a first bevel gear (175) fixed to the other end of the rotating rod (174), and a second bevel gear (176) fixed to the top of the first screw (14). The bottom of the first bevel gear (175) meshes with the other side of the second bevel gear (176).

2. The locking and fixing device for a segmented straight ladder of a ship according to claim 1, characterized in that: A slider (6) is fixedly connected to the side of the rack plate (53) near the inner wall of the gravity box (2), and the surface of the slider (6) is slidably connected to the inner wall of the gravity box (2).

3. The locking and fixing device for a segmented straight ladder of a ship according to claim 1, characterized in that: Limiting grooves (10) are provided on both sides of the inner cavity of the support plate (4), and limiting blocks (11) are fixedly connected to both sides of the moving block (93). The surface of the limiting block (11) is slidably connected to the inside of the limiting groove (10).

4. The locking and fixing device for a segmented straight ladder of a ship according to claim 1, characterized in that: The front and rear sides of the second fixing plate (13) are movably connected to limit rods (18), and the bottom end of the limit rods (18) is fixed to the top of the abutment plate (16).

5. The locking and fixing device for a segmented straight ladder of a ship according to claim 1, characterized in that: The bottom of the abutment (16) is fixed with several anti-slip ridges (19), and the anti-slip ridges (19) are arranged at equal intervals.

6. The locking and fixing device for a segmented straight ladder of a ship according to claim 1, characterized in that: The inner side of the card block (8) is provided with a soft pad (20), and the soft pad (20) is made of rubber.

7. The locking and fixing device for a segmented straight ladder of a ship according to claim 1, characterized in that: Limiting plates (21) are fixedly connected to the front of both the left and right sides of the gravity box (2), and the interior of the limiting plates (21) is rotatably connected to the surface of the rotating rod (174).

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