Steel structure construction working ladder

Abstract

The utility model discloses a steel structure construction working ladder, which belongs to the technical field of working ladders and comprises a herringbone ladder, an anti-roll mechanism is arranged at the bottom of the herringbone ladder and used for preventing the herringbone ladder from roll, an anti-retraction mechanism is arranged in the middle of the herringbone ladder and used for preventing the herringbone ladder from being folded, and the anti-roll mechanism comprises a hinge seat arranged at the bottom of the herringbone ladder. Supporting rods are rotationally connected to the hinge seats, and supporting legs are rotationally arranged at the tail ends of the supporting rods. The herringbone ladder has the technical key points that as the side face of the herringbone ladder is provided with the anti-roll mechanism, after the herringbone ladder is unfolded, the supporting legs at the end parts of the supporting rods are in contact with the ground to play a role in roll-over resistance, so that the herringbone ladder is not easy to roll over in all directions in the use process, and the use safety is improved; besides, when the herringbone ladder is unfolded to the maximum extent, the anti-retraction mechanism can provide supporting force to resist folding of the ladder legs, and the situation that the ladder legs are automatically folded under the action of gravity and lose the reliable supporting effect is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of working ladders, in particular to a working ladder for steel structure construction. Background Technique

[0002] A working ladder is a device used for working at heights. According to its structure and uses, it can be divided into various types, including but not limited to step ladders, double-step ladders, footstools, straight ladders, platform ladders, extension ladders, trestle ladders, etc. Each type of ladder has its specific usage scenarios and advantages. A folding ladder is a commonly used type of ladder. Its design enables the ladder to form an inverted V-shaped structure when in use, thereby providing stable support. It is suitable for a variety of occasions, such as households, industries, construction, etc. It can be used for various tasks such as cleaning, maintenance, and decoration. It is a relatively common ladder in the process of steel structure construction.

[0003] When the ladder is in use, it can form an inverted V-shaped structure, thus providing stable support. However, when a worker is working at the top of the ladder, due to construction reasons, the top of the ladder is likely to be subjected to a lateral thrust. Since there is a lack of lateral support, the top of the ladder is likely to shift laterally, causing one end of the bottom of the ladder to lift up, and finally resulting in the ladder tipping over and the worker being injured. In addition, the limiting structure used for folding ladders is generally a flexible structure such as a rope, which is used to limit the maximum opening angle of the folding ladder. However, this flexible structure cannot provide a supporting force to resist the closing of the ladder legs. When one side of the ladder legs lifts up, it is likely to automatically close under the action of gravity and lose its reliable supporting effect, and finally may cause injury to personnel. Therefore, in view of the above problems, a working ladder for steel structure construction is proposed herein. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a working ladder for steel structure construction. An anti-rollover mechanism is provided on the side of the working ladder. After the folding ladder is opened, the flipping support rod is flipped to be in a horizontal state and its further rotation is restricted by a locking bolt to ensure that a stable supporting force can be provided. At this time, the supporting feet at the end of the support rod are in contact with the ground, playing a role in anti-rollover, so that the folding ladder is not likely to tip over in all directions during use, improving the safety of use. In addition, the anti-retraction mechanism can provide a supporting force to resist the closing of the ladder legs when the folding ladder is unfolded to the maximum amplitude, preventing it from automatically closing under the action of gravity and losing its reliable supporting effect, solving the technical problems in the prior art that the folding ladder is likely to tip over and cause injury to the worker due to the lack of lateral support and the top of the ladder shifting laterally during use, and that the limiting structure of the folding ladder is usually a flexible structure and cannot provide a supporting force to resist the closing of the ladder legs, and there is a possibility of losing its reliable supporting effect due to automatic closing during use.

[0005] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0006] A steel structure construction work ladder includes a stepladder, an anti-roll mechanism is provided at the bottom of the stepladder to prevent the stepladder from tilting, an anti-retraction mechanism is provided in the middle of the stepladder to prevent the stepladder from folding, the anti-roll mechanism includes a hinged seat provided at the bottom of the stepladder, a support rod is rotatably connected to the hinged seat, and a support foot is rotatably provided at the end of the support rod, wherein locking holes are provided on both the support rod and the stepladder, and locking bolts are inserted in the locking holes.

[0007] With the above-mentioned structural form, since an anti-roll mechanism is provided on the side of the stepladder, when the stepladder is unfolded, the support rod is flipped to make it open in a horizontal state, and the locking bolt is used to restrict its further rotation to ensure that a stable supporting force can be provided. At this time, the supporting feet at the ends of the support rod are in contact with the ground, playing an anti-rollover role, making it difficult for the stepladder to roll over in all directions during use, thereby improving the safety of use; in addition, the anti-retraction mechanism can provide supporting force to resist the retraction of the ladder legs when the stepladder is unfolded to its maximum extent, thereby preventing it from automatically retracting under the action of gravity and losing its reliable supporting function.

[0008] In one possible implementation, the locking hole is a non-circular slot, the locking bolt is a U-shaped structure, and its cross-section is consistent with the shape and size of the locking hole. When in use, the two ends of the locking bolt are respectively inserted into the locking holes on the support rod and the stepladder.

[0009] With the above-mentioned structure, since the locking hole and the locking bolt both have non-circular cross-sections, when the locking bolt is inserted, it can prevent the support rod from rotating, so that the support rod can provide lateral support force.

[0010] In one possible implementation, a limit block is fixedly provided on the upper side of the end of the support rod to limit the rotation range of the support leg, and when the support leg contacts the limit block, the lower end surface of the end of the support leg is flush with the bottom of the stepladder.

[0011] Through the above-mentioned structural form, the maximum rotation angle of the supporting leg can be limited by the limit block. While not affecting the overall folding and shrinking characteristics, the force acting on the supporting leg can be transmitted to the support rod through the limit block, thereby playing a role of lateral support to prevent rollover.

[0012] In one possible implementation, the anti-retraction mechanism includes two hinged parts fixedly provided on the stepladder, a connecting rod is rotatably provided on the hinged parts, the ends of the two connecting rods are hinged through a connecting shaft, and a locking wheel is threadedly connected to the connecting shaft.

[0013] With the above structural form, the maximum opening angle of the folding ladder can be restricted by the connecting rod, enabling the folding ladder to meet normal usage requirements. At the same time, when the folding ladder is opened to the maximum extent, the locking wheel can be tightened so that the connecting rods cannot rotate relative to each other, thereby providing a supporting force to prevent the folding ladder from closing during use and improving safety during use.

[0014] In a possible implementation manner, a friction gasket is sleeved outside the connecting shaft. The friction gasket is located between the locking wheel and the connecting rod, and it is an elastic rubber ring structure with a rough surface.

[0015] With the above structural form, the frictional effect between the locking wheel and the connecting rod can be enhanced by the provided friction gasket, making it impossible for the connecting rods to rotate relative to each other easily, thereby providing sufficient frictional force to prevent the folding ladder from closing during use.

[0016] In a possible implementation manner, the folding ladder includes two sets of ladder legs. One set of ladder legs is fixedly provided with a hinge rod at the top, and the other set of ladder legs is fixedly provided with a hinge sleeve at the top. The two sets of ladder legs are rotationally connected by sleeving the hinge sleeve outside the hinge rod. In addition, pedals and a top plate are provided on the ladder legs.

[0017] With the above structural form, stable support can be provided by opening the ladder legs, while the pedals and the top plate serve as platforms for workers to operate.

[0018] In a possible implementation manner, anti-slip sleeves are sleeved at the bottom ends of the ladder legs. The anti-slip sleeves are made of hard and rough rubber, and their bottom ends are processed with rounded corners.

[0019] With the above structural form, the frictional force between the ladder legs and the ground can be increased, making the folding ladder more stable and safe during use and preventing it from sliding.

[0020] In a possible implementation manner, a storage groove is formed on the outer side of the ladder leg, which is used to accommodate the limiting block when the support rod is stored.

[0021] With the above structural form, when the support rod and the support foot are retracted, the limiting block can be accommodated in the storage groove, allowing the support rod to fit closely to the ladder leg, ensuring that the folding ladder does not occupy too much space when not in use.

[0022] In summary, the present utility model has the following beneficial technical effects:

[0023] Since the side of the folding ladder is provided with an anti-rollover mechanism, when the folding ladder is opened, the turning support rod is turned to make it open and in a horizontal state, and the locking bolt is used to limit its continuous rotation to ensure that a stable supporting force can be provided. At this time, the supporting feet at the ends of the support rod contact the ground, playing a role in preventing rollover, so that the folding ladder is not prone to rollover in all directions during use, improving the safety of use;

[0024] In addition, a connecting rod can be used to limit the maximum opening angle of the folding ladder, so that the folding ladder can meet the normal use requirements. At the same time, when the folding ladder is opened to the maximum extent, the locking wheel can be tightened so that the connecting rods cannot rotate relative to each other, and then a supporting force can be provided to prevent the folding ladder from closing during use, improving the safety during use;

[0025] And when the folding ladder is not in use, the support rod and the supporting feet can be retracted to ensure that too much space will not be occupied. Specifically, the limiting block is accommodated in the storage groove, and the support rod is attached to the ladder leg. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0027] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 is a schematic diagram of the structure of the anti-rollover mechanism of the present invention;

[0029] Figure 3 is a schematic diagram of the structure of the anti-retraction mechanism of the present invention;

[0030] Figure 4 is a schematic diagram of the retracted state of the anti-rollover mechanism of the present invention;

[0031] Figure 5 is a schematic diagram of the structure of the folding ladder of the present invention.

[0032] In the figure: 1, folding ladder; 11, ladder leg; 111, storage groove; 12, hinge rod; 13, hinge sleeve; 14, pedal; 15, top plate; 16, anti-slip sleeve; 2, anti-rollover mechanism; 21, hinge seat; 22, support rod; 23, supporting foot; 24, locking hole; 25, locking bolt; 26, limiting block; 3, anti-retraction mechanism; 31, hinge member; 32, connecting rod; 33, connecting shaft; 34, locking wheel; 35, friction gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The technical solution in the embodiments of the present application to solve the problems in the above-mentioned background technology is generally as follows:

[0034] As Figure 1 - Figure 2 shown, a working ladder for steel structure construction provided in this embodiment includes a folding ladder 1, and an anti-rollover mechanism 2 is provided at its bottom to prevent the folding ladder 1 from rolling over. The anti-rollover mechanism 2 includes a hinge seat 21 provided at the bottom of the folding ladder 1. A support rod 22 is rotatably connected to the hinge seat 21, and a support foot 23 is rotatably provided at the end of the support rod 22. Among them, locking holes 24 are formed in both the support rod 22 and the folding ladder 1, and a locking bolt 25 is inserted into the locking holes 24. Through the above structural form, since the anti-rollover mechanism 2 is provided on the side of the folding ladder 1, when the folding ladder 1 is opened, the support rod 22 is flipped to open and be in a horizontal state, and the locking bolt 25 is used to restrict its further rotation to ensure that a stable supporting force can be provided. At this time, the support foot 23 at the end of the support rod 22 contacts the ground, playing a role in resisting rollover, so that the folding ladder 1 is not prone to rollover in all directions during use, improving the safety of use.

[0035] Among them, the locking hole 24 is a non-circular groove hole, and the locking bolt 25 is a U-shaped structure, and its cross-section is consistent with the shape of the locking hole 24 and the dimensions match. When in use, the two ends of the locking bolt 25 are respectively inserted into the locking holes 24 on the support rod 22 and the folding ladder 1. Through the above structural form, since both the locking hole 24 and the locking bolt 25 are non-circular cross-section structures, when the locking bolt 25 is inserted, it can play a role in hindering the rotation of the support rod 22, enabling the support rod 22 to provide lateral supporting force.

[0036] In addition, a limiting block 26 for restricting the rotation range of the support foot 23 is fixedly provided on the upper side of the end of the support rod 22. When the support foot 23 contacts the limiting block 26, the lower end surface of the end of the support foot 23 is flush with the bottommost part of the folding ladder 1. Through the above structural form, the maximum rotation angle of the support foot 23 can be restricted by the limiting block 26. While not affecting the overall folding and retracting characteristics, the acting force received by the support foot 23 can be transmitted to the support rod 22 through the limiting block 26, thereby playing a role in lateral support to prevent rollover.

[0037] As Figure 1 , Figure 3 shown, an anti-retraction mechanism 3 is provided in the middle of the folding ladder 1 to prevent the folding ladder 1 from retracting. The anti-retraction mechanism 3 can provide a supporting force to resist the retraction of the ladder legs 11 when the folding ladder 1 is unfolded to the maximum extent, avoiding its automatic retraction under the action of gravity and losing the reliable supporting effect.

[0038] Specifically, the anti-retraction mechanism 3 includes two hinge members 31 fixedly arranged on the folding ladder 1. A connecting rod 32 is rotatably arranged on the hinge member 31. The ends of the two connecting rods 32 are hinged through a connecting shaft 33, and a locking wheel 34 is threadedly connected to the connecting shaft 33. Through the above structural form, the maximum opening angle of the folding ladder 1 can be limited by the connecting rod 32, so that the folding ladder 1 can meet the normal use requirements. At the same time, when the folding ladder 1 is opened to the maximum extent, the locking wheel 34 can be tightened, so that the connecting rods 32 cannot rotate relative to each other, thereby providing a supporting force to prevent the folding ladder 1 from retracting during use and improving the safety during use.

[0039] Wherein, a friction gasket 35 is sleeved outside the connecting shaft 33. The friction gasket 35 is located between the locking wheel 34 and the connecting rod 32, and it is an elastic rubber ring structure with a rough surface. Through the above structural form, the friction between the locking wheel 34 and the connecting rod 32 can be enhanced by the provided friction gasket 35, so that the connecting rods 32 cannot rotate relative to each other easily, thereby providing sufficient friction to prevent the folding ladder 1 from retracting during use.

[0040] As Figure 5 shown, the folding ladder 1 includes two groups of ladder legs 11. One group of ladder legs 11 is fixedly provided with a hinge rod 12 at the top, and the other group of ladder legs 11 is fixedly provided with a hinge sleeve 13 at the top. The two groups of ladder legs 11 are rotationally connected by the hinge sleeve 13 sleeving outside the hinge rod 12. In addition, a pedal 14 and a top plate 15 are provided on the ladder legs 11. Through the above structural form, stable support can be provided by opening the ladder legs 11, and the pedal 14 and the top plate 15 serve as platforms for workers to operate.

[0041] As Figure 2 shown, anti-slip sleeves 16 are sleeved at the bottom ends of the ladder legs 11. The anti-slip sleeves 16 are made of hard and rough rubber structures, and their bottom ends are processed with rounded corners. Through the above structural form, the friction between the ladder legs 11 and the ground can be increased, so that the folding ladder 1 is more stable and safe during use and will not slip.

[0042] In addition, a storage groove 111 is opened on the outer side of the ladder leg 11, which is used to accommodate the limit block 26 when the support rod 22 is stored. Through the above structural form, when the support rod 22 and the support foot 23 are retracted, the limit block 26 can be accommodated in the storage groove 111 to make the support rod 22 fit the ladder leg 11, ensuring that the folding ladder 1 does not occupy too much space when not in use.

[0043] The working principle and working process of the present utility model:

[0044] Since the anti - roll mechanism 2 is provided on the side of the folding ladder 1, after the folding ladder 1 is opened, the turning support rod 22 is turned over to be in a horizontal state and its further rotation is restricted by the locking bolt 25 to ensure that a stable supporting force can be provided. At this time, the supporting feet 23 at the ends of the support rods 22 are in contact with the ground, playing a role in preventing rollover, so that the folding ladder 1 is not prone to rollover in all directions during use, improving the safety of use.

[0045] In addition, the maximum opening angle of the folding ladder 1 can be restricted by the connecting rod 32, so that the folding ladder 1 can meet the normal use requirements. At the same time, when the folding ladder 1 is opened to the maximum extent, the locking wheel 34 can be tightened so that the connecting rods 32 cannot rotate relative to each other, and then a supporting force can be provided to prevent the folding ladder 1 from closing during use, improving the safety during use.

[0046] And when the folding ladder 1 is not in use, the space occupied can be ensured not to be excessive by contracting the support rods 22 and the supporting feet 23. Specifically, the limiting block 26 is accommodated in the receiving groove 111 and the support rods 22 are attached to the ladder legs 11.

[0047] Finally, it should be noted that: Obviously, the above - mentioned embodiments are only examples for clearly explaining the present utility model, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present utility model.

Claims

1. A steel structure construction working ladder, characterized in that, Including: An A-frame ladder (1) with an anti-tipping mechanism (2) provided at its bottom to prevent the A-frame ladder (1) from tipping over, and an anti-retraction mechanism (3) provided in the middle of the A-frame ladder (1) to prevent the A-frame ladder (1) from folding up; The anti-tipping mechanism (2) includes a hinge seat (21) provided at the bottom of the A-frame ladder (1), a support rod (22) is rotatably connected to the hinge seat (21), and a support foot (23) is rotatably provided at the end of the support rod (22); Wherein, locking holes (24) are formed in both the support rod (22) and the A-frame ladder (1), and a locking bolt (25) is inserted into the locking holes (24).

2. The steel structure construction working ladder according to claim 1, characterized in that: The locking holes (24) are non-circular groove holes, the locking bolt (25) is of a U-shaped structure, and its cross-section is consistent with the shape of the locking holes (24) and the dimensions match. When in use, the two ends of the locking bolt (25) are respectively inserted into the locking holes (24) on the support rod (22) and the A-frame ladder (1).

3. A steel structure construction working ladder according to claim 1, characterized in that: A limiting block (26) for restricting the rotation range of the support foot (23) is fixedly provided on the upper side of the end of the support rod (22), and when the support foot (23) contacts the limiting block (26), the lower end surface of the end of the support foot (23) is flush with the bottommost part of the A-frame ladder (1).

4. A steel structure construction working ladder according to claim 1, characterized in that: The anti-retraction mechanism (3) includes two hinge members (31) fixedly provided on the A-frame ladder (1), a connecting rod (32) is rotatably provided on the hinge members (31), the ends of the two connecting rods (32) are hinged by a connecting shaft (33), and a locking wheel (34) is threadedly connected to the connecting shaft (33).

5. The steel structure construction working ladder according to claim 4, characterized in that: A friction gasket (35) is sleeved outside the connecting shaft (33), the friction gasket (35) is located between the locking wheel (34) and the connecting rod (32), and it is of an elastic rubber ring structure with a rough surface.

6. The work ladder for steel structure construction according to claim 1, wherein: The A-frame ladder (1) includes two groups of ladder legs (11), an articulated rod (12) is fixedly provided at the top of one group of ladder legs (11), an articulated sleeve (13) is fixedly provided at the top of the other group of ladder legs (11), and the two groups of ladder legs (11) are rotatably connected by sleeving the articulated sleeve (13) outside the articulated rod (12). In addition, pedals (14) and top plates (15) are provided on the ladder legs (11).

7. A steel structure construction working ladder according to claim 6, characterized in that: Anti-slip sleeves (16) are sleeved at the bottom ends of the ladder legs (11), the anti-slip sleeves (16) are made of hard and rough rubber, and their bottom ends are processed with rounded corners.

8. The working ladder for steel structure construction according to claim 6, wherein: A storage groove (111) is formed on the outer side of the ladder leg (11) for accommodating the limiting block (26) when the support rod (22) is stored.

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