A portable ladder

Abstract

The application relates to the technical field of crawling ladders, in particular to a portable crawling ladder which comprises a storage rack, the storage rack is arranged in a narrow working place, a storage groove is formed in the storage rack, two symmetrically-arranged guide rails are arranged on the lower inner wall of the storage groove, guide grooves are formed above the guide rails, a crawling ladder body is arranged in the two guide grooves, two supporting frames are arranged on the side walls of the crawling ladder body, and guide wheels are rotatably arranged on the lower end faces of the supporting frames. When the crawling ladder is needed to be used, the crawling ladder body is taken out from the storage groove and is obliquely arranged on the side wall of the storage rack, then the crawling ladder body is clamped through a fixing mechanism, the safety of workers when climbing to a high place is ensured, the crawling ladder does not need to be fixedly arranged, is suitable for narrow working places, does not occupy effective space, and is more convenient and easy to use.

Description

Technical Field

[0001] This invention relates to the field of ladder technology, and in particular to a portable ladder. Background Technology

[0002] Ladders are civil engineering equipment used to assist workers in moving up and down construction sites. They are like portable stairs, unfolding when needed and folding up when not in use for easy transport.

[0003] Ladders must be sturdy and robust in construction. They are widely used in various civil engineering and decoration projects. Their convenience and versatility have made them increasingly popular, so they are used in building construction.

[0004] In some relatively narrow workplaces where workers need to reach higher places, ladders are needed to climb up. However, due to space limitations, installing ladders is inconvenient. Fixed ladders can be installed, but they are used less frequently and take up valuable space.

[0005] Therefore, the present invention provides a portable climbing ladder to solve the above problems. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a portable ladder, including a storage rack. The storage rack is installed in a confined workspace. A storage slot is provided within the storage rack, and two symmetrically arranged guide rails are installed on the lower inner wall of the storage slot. A guide groove is provided above the guide rails, and the ladder body is housed within both guide grooves. Two supports are installed on the side walls of the ladder body, and guide wheels are rotatably mounted on the lower edge of the supports. The guide wheels are rotatably positioned within the guide grooves. A fixing mechanism is provided within the storage rack to secure the ladder body when it is removed or placed. When operating the ladder according to this embodiment, initially (i.e., when not in use), the ladder body is placed horizontally inside the storage slot of the storage rack. When needed, the ladder body is simply removed from the storage slot and placed diagonally against the side wall of the storage rack. The fixing mechanism then secures the ladder body, ensuring the safety of workers climbing to higher places. This design eliminates the need for a fixed installation of the ladder, is suitable for confined workspaces, does not occupy valuable space, and is more convenient and efficient to use.

[0007] In one embodiment of the present invention, the bottom of the support frame is provided with a rotating shaft adapted to the guide wheel, the guide wheel is located on the upper side of the ladder body, and the shape of the guide wheel is adapted to the shape of the guide groove. During operation, when the ladder body needs to be taken out, the worker pulls one end of the ladder body to move the support frame and guide wheel at its bottom within the guide groove. The same method is used when the ladder body is sent into the storage slot. This can speed up the removal and storage of the ladder body and save effort.

[0008] In one embodiment of the present invention, the fixing mechanism includes two rotating levers rotatably mounted below the support frame. The rotating levers are respectively located at both ends of the lower end face of the support frame. A slot is formed on the surface of the guide rail, the shape of which matches the shape of the rotating lever. A guide unit is provided below the storage rack to guide the inclined ladder body. During operation, when the ladder body is placed horizontally inside the storage slot, the rotating lever at one end will engage in the slot, thus ensuring the stability of the ladder body when not in use. When it needs to be removed, simply lift the ladder body gently to remove the rotating lever below from the slot, then pull the ladder body out and place it diagonally against the side wall of the storage rack. Simultaneously, the rotating lever on the other side will engage in the slot, ensuring the safety of workers climbing the ladder and preventing it from detaching from the storage rack.

[0009] In one embodiment of the present invention, a fixed baffle is installed on the side of the lower end face of the support frame near the rotating lever. The fixed baffle is used to limit the position of the rotating lever. During operation, when the ladder body is placed horizontally inside the storage slot, one end of the rotating lever is in a horizontal state, and the other end of the rotating lever is in an inclined state and locked in the slot. With the fixed baffle limiting the inclined rotating lever, the rotating lever can be stably locked in the slot. When the ladder body is placed at an incline, the rotating lever on the side near the ground can be used as a handrail, and the rotating lever on the other side will be stably locked in the slot under the action of the fixed baffle, ensuring its safety during use.

[0010] In one embodiment of the present invention, a rotating frame adapted to the rotating lever is provided below the support frame. One end of the guide rail is an open end and the other end is a closed end. This design makes it convenient for one end of the ladder body to abut against the closed end of the guide rail when the ladder body is laid horizontally.

[0011] In one embodiment of the present invention, the guiding unit includes a mounting frame rotatably mounted below the storage rack. A winding wheel is rotatably mounted inside the mounting frame. The outer surface of the winding wheel is connected to the output end of a motor. The motor is mounted inside the mounting frame. A support rod is mounted on the inner edge of the support frame. A winding shaft is mounted on the lower end face of the support rod. A connecting rope is sleeved on the outer surface of the winding wheel. The side of the connecting rope away from the winding wheel is connected to the winding shaft. During operation, when the ladder body needs to be removed, the ladder body is first gently lifted to allow the rotating locking rod below to disengage from the slot. Then, the motor is controlled to rotate the winding wheel. The winding wheel tightens the connecting rope on its outer surface, pulling the winding shaft and support rod. This causes the support rod to move the support frame closer to the winding wheel, exposing part of the ladder body. At this point, the worker only needs to press down on the ladder body to tilt it and stop the operation of the motor and the winding wheel. This facilitates the removal of the ladder body and avoids the problem of workers with less strength having difficulty removing it.

[0012] In one embodiment of the present invention, the first winding wheel and the winding shaft are designed to be far apart from each other, and the lower end face of the storage rack is provided with a rectangular groove that is adapted to the winding shaft and the support rod. During operation, when the first connecting rope pulls the winding shaft and the support rod to move, they will move in the rectangular groove, which makes it convenient to take out the ladder body and make it more convenient to use.

[0013] In one embodiment of the present invention, a second mounting frame is provided on the side of the storage rack away from the first mounting frame. A second winding wheel is rotatably mounted inside the second mounting frame. The surface of the second winding wheel is connected to the output end of the motor. A second connecting rope is wound on the outer surface of the second winding wheel. The side of the second connecting rope away from the second winding wheel is connected to the surface of the support rod. During operation, when the inclined ladder needs to be retracted, the motor is controlled to drive the second winding wheel to rotate. The second winding wheel drives the second connecting rope to tighten, causing the second connecting rope to move the support rod and the ladder body upward. Then, the worker can manually guide the ladder body to a horizontal position and use the second winding wheel to retract it. This allows for convenient operation by different workers and is quick and easy to use.

[0014] In one embodiment of the present invention, the second winding wheel and the first winding wheel are arranged on different sides, and the second connecting rope and the first connecting rope do not contact each other. This design facilitates the removal and replacement of the ladder body.

[0015] The technical solution of the present invention has the following advantages compared with the prior art:

[0016] The portable ladder of this invention uses a fixed baffle to limit the tilted rotating rod, allowing the rotating rod to be stably locked in the slot. When the ladder body is placed at an angle, the rotating rod on the side closest to the ground can be used as a handrail, while the rotating rod on the other side will be stably locked in the slot by the fixed baffle, ensuring its safety during use.

[0017] The portable ladder described in this invention uses a motor to drive a winding wheel to rotate. The winding wheel tightens the connecting rope on its outer surface, which in turn pulls the winding shaft and support rod to move. This causes the support rod to move the support frame closer to the winding wheel, exposing part of the ladder body. At this point, the worker only needs to press down on the ladder body to tilt it and stop the motor and winding wheel. This facilitates the removal of the ladder body and avoids the problem of workers with less strength having difficulty removing it.

[0018] The portable climbing ladder described in this invention uses a motor to drive a second winding wheel to rotate. The second winding wheel then tightens a second connecting rope, causing the connecting rope to lift the support rod and the climbing ladder body upwards. Afterwards, the worker can manually guide the climbing ladder body to a horizontal position and retract it using the second winding wheel. This design allows for convenient operation by different workers and is quick and easy to use. Attached Figure Description

[0019] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the support structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the guide rail structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the guide groove structure of the present invention;

[0024] Figure 5 In this invention Figure 4 Enlarged view of the structure at point A;

[0025] Figure 6 This is a schematic diagram of the support structure in this invention;

[0026] Figure 7 In this invention Figure 6 Enlarged view of the structure at point B;

[0027] Figure 8This is a schematic diagram of a portion of the winding wheel structure in this invention;

[0028] Figure 9 This is a schematic diagram of the two-part structure of the winding wheel in this invention.

[0029] Explanation of reference numerals in the accompanying drawings: 1. Storage rack; 2. Storage slot; 201. Guide rail; 3. Guide slot; 4. Ladder body; 401. Support frame; 5. Guide wheel; 6. Rotating lever; 7. Slot; 8. Fixed baffle; 9. Mounting frame one; 10. Winding wheel one; 11. Support rod; 12. Winding shaft; 13. Connecting rope one; 14. Rectangular slot; 15. Mounting frame two; 16. Winding wheel two; 17. Connecting rope two. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0031] Reference Figures 1 to 9 As shown in the embodiment of the present invention, a portable ladder includes a storage rack 1, which is set in a confined workspace. The storage rack 1 has a storage slot 2, and two symmetrically arranged guide rails 201 are installed on the lower inner wall of the storage slot 2. A guide groove 3 is provided above the guide rails 201. A ladder body 4 is arranged in both guide grooves 3. Two support frames 401 are installed on the two side walls of the ladder body 4. A guide wheel 5 is rotatably installed at the lower edge of the support frame 401. The guide wheel 5 is rotatably arranged in the guide groove 3. A fixing mechanism is provided in the storage rack 1 to lock the ladder body 4 when it is taken out and placed.

[0032] In some relatively narrow workplaces where workers need to reach higher places, ladders are required. However, due to space limitations, installing ladders is inconvenient. Fixed ladders can be installed, but they are used less frequently and take up valuable space.

[0033] Therefore, when operating the ladder according to this embodiment of the invention, initially, when not in use by the staff, the ladder body 4 is placed horizontally inside the storage slot 2 of the storage rack 1, as shown in the attached drawing. Figure 1 and Figure 2 As shown, when needed, simply remove the ladder body 4 from the storage slot 2 and place it diagonally against the side wall of the storage rack 1, referring to the attached diagram. Figure 3As shown, the ladder body 4 is then secured by a fixing mechanism, ensuring the safety of workers when climbing to higher places. This design eliminates the need for the ladder to be installed in a fixed manner, is suitable for narrow workplaces, does not occupy effective space, and is more convenient and easy to use.

[0034] The bottom of the support frame 401 is provided with a rotating shaft adapted to the guide wheel 5. The guide wheel 5 is located on the upper side of the ladder body 4, and the shape of the guide wheel 5 is adapted to the shape of the guide groove 3. During operation, when it is necessary to remove the ladder body 4, the worker pulls one end of the ladder body 4 to move the support frame 401 and the guide wheel 5 at its bottom within the guide groove 3. The same method is used when the ladder body 4 is sent into the storage slot 2. This can speed up the removal and storage of the ladder body 4 and save effort.

[0035] The fixing mechanism includes a rotating locking rod 6 rotatably installed below the support frame 401. Two rotating locking rods 6 are provided and are respectively located at both ends of the lower end face of the support frame 401. The surface of the guide rail 201 is provided with a slot 7. The shape of the slot 7 is adapted to the shape of the rotating locking rod 6. A guide unit is provided below the storage rack 1. The guide unit is used to guide the inclined ladder body 4.

[0036] During operation, when the ladder body 4 is placed horizontally inside the storage slot 2, the rotating lever 6 at one end will engage in the slot 7, as shown in the attached diagram. Figure 5 As shown, this ensures the stability of the ladder body 4 when not in use. When it needs to be removed, simply lift the ladder body 4 gently to release the rotating lever 6 at the bottom from the slot 7. Then pull the ladder body 4 out and place it diagonally against the side wall of the storage rack 1. At the same time, the rotating lever 6 on the other side will be locked into the slot 7. (Refer to the attached diagram.) Figure 6 and Figure 7 As shown, this ensures the safety of staff when climbing the ladder and prevents them from falling off one side of the storage rack 1.

[0037] A fixed baffle 8 is installed on the lower end face of the support frame 401 near the rotating lever 6. The fixed baffle 8 is used to limit the position of the rotating lever 6. During operation, when the ladder body 4 is placed horizontally inside the storage slot 2, one end of the rotating lever 6 is in a horizontal state, and the other end of the rotating lever 6 is in an inclined state and locked in the slot 7. With the fixed baffle 8 limiting the inclined rotating lever 6, the rotating lever 6 can be stably locked in the slot 7. When the ladder body 4 is placed at an incline, the rotating lever 6 on the side closer to the ground can be used as a handrail, and the rotating lever 6 on the other side will be stably locked in the slot 7 under the action of the fixed baffle 8, ensuring its safety during use.

[0038] Below the support frame 401 is a rotating frame adapted to the rotating lever 6. One end of the guide rail 201 is an open end and the other end is a closed end. This design makes it convenient for the ladder body 4 to be laid horizontally in the future, so that one end of the ladder body 4 will abut against the closed end of the guide rail 201.

[0039] The guiding unit includes a mounting frame 9 rotatably mounted below the storage rack 1. A winding wheel 10 is rotatably mounted inside the mounting frame 9. The outer surface of the winding wheel 10 is connected to the motor output end. The motor is mounted inside the mounting frame 9. A support rod 11 is mounted on the inner edge of the support frame 401. A winding shaft 12 is mounted on the lower end face of the support rod 11. A connecting rope 13 is sleeved on the outer surface of the winding wheel 10. The side of the connecting rope 13 away from the winding wheel 10 is connected to the winding shaft 12. During operation, when it is necessary to remove the ladder body 4, first gently lift the ladder body 4 to allow it to... The rotating lever 6 below is removed from the slot 7. Then, the control motor drives the winding wheel 10 to rotate. The winding wheel 10 will cause the connecting rope 13 on its outer surface to tighten. The connecting rope 13 pulls the winding shaft 12 and the support rod 11 to move. This causes the support rod 11 to move the support frame 401 to the side closer to the winding wheel 10. After that, part of the ladder body 4 will be exposed. At this time, the staff only needs to press down on the ladder body 4 to make it tilt, and stop the operation of the motor and the winding wheel 10. This makes it easy to remove the ladder body 4 and avoids the problem of some staff with less strength having difficulty removing it.

[0040] The winding wheel 10 and the winding shaft 12 are designed to be far apart from each other, and the lower end face of the storage rack 1 is provided with a rectangular groove 14 that is adapted to the winding shaft 12 and the support rod 11.

[0041] When in operation, when the connecting rope 13 pulls the winding shaft 12 and the support rod 11 to move, it will move within the rectangular groove 14, which makes it easy to remove the ladder body 4 and makes it more convenient to use.

[0042] A second mounting frame 15 is provided on the side of the storage rack 1 away from the mounting frame 9. A second winding wheel 16 is rotatably mounted inside the second mounting frame 15. The surface of the second winding wheel 16 is connected to the output end of the motor. A second connecting rope 17 is wound around the outer surface of the second winding wheel 16. The side of the second connecting rope 17 away from the second winding wheel 16 is connected to the surface of the support rod 11. During operation, when it is necessary to retract the inclined ladder, the motor is controlled to drive the second winding wheel 16 to rotate. The second winding wheel 16 drives the second connecting rope 17 to tighten, so that the second connecting rope 17 drives the support rod 11 and the ladder body 4 to move upward. Then, the operator holds the ladder body 4 to the horizontal and uses the second winding wheel 16 to retract it. This makes it convenient for different operators to operate and is quick and easy to use.

[0043] The second winding wheel 16 and the first winding wheel 10 are arranged on different sides. The second connecting rope 17 does not contact the first connecting rope 13. The storage rack 1 is arc-shaped on the side near the ladder body 4. This design facilitates the removal and return of the ladder body 4.

[0044] In some narrow workplaces where workers need to reach higher places, ladders are needed. However, due to space limitations, installing ladders is inconvenient. Fixed ladders can be installed, but they are used less frequently and take up valuable space.

[0045] Therefore, when operating the ladder according to this embodiment of the invention, initially, when not in use by the staff, the ladder body 4 is placed horizontally inside the storage slot 2 of the storage rack 1, as shown in the attached drawing. Figure 1 and Figure 2 As shown, when needed, simply remove the ladder body 4 from the storage slot 2 and place it diagonally against the side wall of the storage rack 1, referring to the attached diagram. Figure 3 As shown, the ladder body 4 is then secured by a fixing mechanism, ensuring the safety of workers when climbing to higher places. This design eliminates the need for a fixed installation of the ladder, making it suitable for narrow workplaces and saving valuable space, thus making it more convenient and efficient to use. When the ladder body 4 needs to be removed, the worker pulls one end of the ladder body 4, causing the support frame 401 and guide wheel 5 at the bottom to move within the guide groove 3. The same process is repeated when the ladder body 4 is inserted into the storage groove 2. This speeds up the removal and storage of the ladder body 4, saving effort.

[0046] When the ladder body 4 is placed horizontally inside the storage slot 2, the rotating lever 6 at one end will engage in the slot 7, as shown in the attached diagram. Figure 5 As shown, this ensures the stability of the ladder body 4 when not in use. When it needs to be removed, simply lift the ladder body 4 gently to release the rotating lever 6 at the bottom from the slot 7. Then pull the ladder body 4 out and place it diagonally against the side wall of the storage rack 1. At the same time, the rotating lever 6 on the other side will be locked into the slot 7. (Refer to the attached diagram.) Figure 6 and Figure 7As shown, this ensures the safety of workers climbing the ladder and prevents them from falling off the storage rack 1. When the ladder body 4 is placed horizontally inside the storage slot 2, one end of the rotating lever 6 is horizontal, while the other end is tilted and locked in the slot 7. The fixed baffle 8 limits the tilted rotating lever 6, ensuring it remains securely locked in the slot 7. When the ladder body 4 is tilted, the rotating lever 6 on the side closest to the ground can act as a handrail, while the other rotating lever 6 is securely locked in the slot 7 by the fixed baffle 8, ensuring safety during use. When it is necessary to move the ladder body 4... When removing the ladder body 4, first gently lift it up so that the rotating locking rod 6 below it can be removed from the slot 7. Then, control the motor to drive the winding wheel 10 to rotate. The winding wheel 10 will cause the connecting rope 13 on its outer surface to tighten. The connecting rope 13 pulls the winding shaft 12 and the support rod 11 to move. This causes the support rod 11 to drive the support frame 401 to move closer to the winding wheel 10. After that, part of the ladder body 4 will be exposed. At this time, the staff only needs to press down on the ladder body 4 to make it tilt, and stop the operation of the motor and the winding wheel 10. This makes it easier to remove the ladder body 4 and avoids the problem of some staff with less strength having difficulty removing it.

[0047] When the inclined ladder needs to be retracted, the control motor drives the winding wheel 16 to rotate, and the winding wheel 16 drives the connecting rope 17 to tighten, so that the connecting rope 17 drives the support rod 11 and the ladder body 4 to move upward. Then, the staff can hold the ladder body 4 to the horizontal and use the winding wheel 16 to retract it. This makes it convenient for different staff to operate and is quick and easy to use.

[0048] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A portable ladder stand, characterized by: The storage rack (1) is set in a small work area. The storage rack (1) has a storage slot (2) inside. The storage slot (2) has two symmetrically arranged guide rails (201) installed on the inner wall of the lower part of the slot. The guide rails (201) have a guide slot (3) above them. The two guide slots (3) are shared by a ladder body (4). The two side walls of the ladder body (4) are equipped with two supports (401). The lower edge of the support (401) is rotatably equipped with a guide wheel (5). The guide wheel (5) is rotatably set in the guide slot (3). The storage rack (1) is equipped with a fixing mechanism to lock the ladder body (4) when it is taken out and placed. The fixing mechanism includes a rotating clamp (6) rotatably installed below the support frame (401). Two rotating clamps (6) are provided and are respectively located at both ends of the lower end face of the support frame (401). The surface of the guide rail (201) is provided with a groove (7). The shape of the groove (7) is adapted to the shape of the rotating clamp (6). A guide unit is provided below the storage rack (1). The guide unit is used to guide the inclined ladder body (4). The guiding unit includes a mounting frame (9) rotatably mounted below the storage rack (1). A winding wheel (10) is rotatably mounted inside the mounting frame (9). The outer surface of the winding wheel (10) is connected to the output end of the motor. The motor is installed inside the mounting frame (9). A support rod (11) is installed at the inner edge of the support frame (401). A winding shaft (12) is installed on the lower end face of the support rod (11). A connecting rope (13) is sleeved on the outer surface of the winding wheel (10). The side of the connecting rope (13) away from the winding wheel (10) is connected to the winding shaft (12). A second mounting frame (15) is provided on the side of the storage rack (1) away from the first mounting frame (9). A second winding wheel (16) is rotatably installed inside the second mounting frame (15). The surface of the second winding wheel (16) is connected to the output end of the motor. A second connecting rope (17) is wound on the outer surface of the second winding wheel (16). The side of the second connecting rope (17) away from the second winding wheel (16) is connected to the surface of the support rod (11).

2. A portable ladder according to claim 1, wherein: The bottom of the support frame (401) is provided with a rotating shaft that is compatible with the guide wheel (5). The guide wheel (5) is located on the upper side of the ladder body (4). The shape of the guide wheel (5) is compatible with the shape of the guide groove (3).

3. A portable ladder according to claim 2, wherein: A fixed baffle (8) is installed on the lower end face of the support (401) near the rotating lever (6), and the fixed baffle (8) is used to limit the position of the rotating lever (6).

4. A portable climbing ladder according to claim 3, characterized in that: Below the support frame (401) is a rotating frame adapted to the rotating lever (6), and one end of the guide rail (201) is an open end and the other end is a closed end.

5. A portable climbing ladder according to claim 4, characterized in that: The winding wheel (10) and the winding shaft (12) are designed to be far apart from each other, and the lower end face of the storage rack (1) is provided with a rectangular groove (14) that is adapted to the winding shaft (12) and the support rod (11).

6. A portable climbing ladder according to claim 5, characterized in that: The second winding wheel (16) and the first winding wheel (10) are arranged on different sides, and the second connecting rope (17) and the first connecting rope (13) do not contact each other.

7. A portable climbing ladder according to claim 6, characterized in that: The storage rack (1) is arc-shaped on the side near the ladder body (4).

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