Crawling ladder

Abstract

The utility model provides a crawling ladder. The crawling ladder comprises transverse rods and a plurality of transverse rods, the ladder frame is composed of two oppositely-arranged side edge components, the side edge components are used for abutting against the wall face, the transverse rods are sequentially arranged in the extending direction of the side edge components at intervals, and each transverse rod is connected with the two side edge components; a connecting piece is arranged on the side, away from the wall surface, of the side edge component, the connecting piece is in sliding connection with the side edge component, a hook is arranged on the connecting piece, and one end of the hook is movably connected with the connecting piece; the hook slides along with the connecting piece so as to change the position of the hook on the side edge component, and the hook rotates around the connecting piece so as to change the angle of the hook on the side edge component. The crawling ladder is used for achieving the effect of improving the mounting efficiency of the crawling ladder.

Description

Technical Field

[0001] The present application relates to the technical field of construction tools, and in particular to a ladder. Background Art

[0002] The wind turbine tower in a wind turbine generator is composed of multiple tower sections and is an important component of the wind turbine. When performing internal installation, packaging, hoisting and disassembly of the tower, workers need to use ladders to climb. Especially when there are many tower sections, ladders are used more frequently. In addition, ladders are also needed to install hoists when hoisting each tower section.

[0003] There is no effective safety fixing measure between the existing ladder and the tower, which makes the ladder easy to slide. Workers are prone to fall due to the side tilt or sliding of the ladder during operation, which poses a serious safety hazard. The ladder in the prior art has poor fixation and is easy to tilt and slide, which leads to low efficiency of ladder mounting. Utility Model Content

[0004] An embodiment of the present application provides a ladder to improve the efficiency of ladder mounting.

[0005] The embodiments of the present application provide the following technical solutions to solve the above technical problems:

[0006] An embodiment of the present application provides a ladder, comprising: a cross bar and multiple cross bars, the ladder frame is composed of two oppositely arranged side members, the side members are used to abut against the wall, the multiple cross bars are arranged in sequence and at intervals along the extension direction of the side members, and each of the cross bars is respectively connected to two of the side members; a connecting piece is provided on the side of the side member away from the wall, the connecting piece is slidably connected to the side member, a hook is provided on the connecting piece, one end of the hook is movably connected to the connecting piece; the hook slides with the connecting piece to change the position of the hook on the side member, and the hook rotates around the connecting piece to change the angle of the hook on the side member.

[0007] Beneficial effects of the embodiments of the present application: The ladder provided by the embodiments of the present application is provided with a connecting piece that can slide along the side member away from the wall, and a hook is provided on the connecting piece, so that the hook can also slide along the side member and can pass over the abutment between the side member and the wall, so that the position of the hook can be adjusted as needed, and thus can adapt to the use requirements in different scenarios. By movably connecting one end of the hook with the connecting piece, the hook can rotate around the connecting piece, and thus can change the angle between the hook and the side member, so that the hook can be placed at the bottom of the ladder before loading, and can slide to the top of the ladder after the ladder abuts, and after rotating it, it is mounted at the target position, so that the fixity of the ladder is improved, and the ladder is prevented from tilting or sliding, thereby improving the mounting efficiency of the ladder.

[0008] In a possible implementation, the connecting member includes a hinge shaft and a slider, the hook is movably connected to the slider via the hinge shaft, and the hinge shaft is perpendicular to the extension direction of the side member to enable the hook to rotate around the slider.

[0009] In a possible implementation, a guide groove is provided on the side member, and the slider is slidably arranged in the guide groove, so that the slider slides on the side member through the guide groove, thereby enabling the hook to slide on the side member.

[0010] In a possible embodiment, a guide groove is provided on the outer side wall of the side member, and the slider includes a first side wall, a second side wall and a bottom plate, the first side wall and the second side wall are arranged opposite to each other, the first side wall and the second side wall are connected through the bottom plate, and the outer side wall of the bottom plate is provided with a hinge axis; wherein a fixed clamping plate is provided on the side of the second side wall away from the bottom plate, the first side wall is slidably matched with the guide groove, the bottom plate and the fixed clamping plate are slidably matched with the outer and inner side walls of the side member respectively, and the second side wall is slidably matched with the upper side wall of the side member.

[0011] In a possible implementation manner, a connection hole is formed on the hook, a latch is passed through the connection hole, and the latch passes through the hook to contact the guide groove.

[0012] In a possible embodiment, a plurality of locking holes are formed on the guide groove, and the latch corresponds to the locking holes. When the latch is inserted into the locking hole, the hook is locked; when the latch is not inserted into the locking hole, the latch can slide in the guide groove with the hook.

[0013] In a possible implementation, the latch is an arched column structure, one side of the latch is a semicircular cylindrical surface, and the other side of the latch is a plane, and the semicircular cylindrical surface is arranged opposite to the plane.

[0014] In a possible implementation, a bracket is provided on the hook, and a through hole is opened on the bracket, and the through hole corresponds to the connecting hole on the hook; one end of the pin passes through the through hole, and the other end of the pin passes through the connecting hole to limit the position of the hook.

[0015] In a possible implementation, the latch is provided with a fixing bolt cap and a support leg, the fixing bolt cap is provided at one end of the latch passing through the through hole, and the support leg is provided on the side of the latch; the top plate of the bracket is located between the fixing bolt cap and the support leg.

[0016] In a possible implementation, a compression spring is provided between the top plate and the support leg, and the compression spring is pressed against the support leg so that the latch has a tendency to extend inwardly into the guide groove.

[0017] In addition to the technical problems solved by the present application, the technical features that constitute the technical solution, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the ladder provided by the present application, other technical features included in the technical solution, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] Figure 1 Structural schematic diagram of the ladder provided for this application Figure 1 ;

[0020] Figure 2 Structural schematic diagram of the ladder provided for this application Figure 2 ;

[0021] Figure 3 Structural schematic diagram of the ladder provided for this application Figure 3 ;

[0022] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 5 A schematic diagram of the structure of the slider and hook in the ladder provided in this application;

[0024] Figure 6 This is a schematic diagram of the ladder provided in this application in the first usage scenario.

[0025] Description of reference numerals:

[0026] 1. Ladder frame; 2. Crossbar; 3. Articulated shaft; 4. Connector; 5. Locking hole; 6. Hook; 7. Latch; 8. Guide groove; 9. Connecting hole; 10. Fixed bolt cap; 11. Side member; 12. Bracket; 13. Support foot; 14. Through hole; 15. Compression spring; 16. Top plate; 17. Base; 20. Slider; 201. First side wall; 202. Second side wall; 203. Bottom plate; 204. Fixed card plate.

[0027] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0028] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0029] In the related art, in order to carry out internal installation, packaging, hoisting and disassembly of the tower, workers need to use ladders to climb. Especially when there are many tower sections, ladders are used more frequently. However, there are no effective safety fixing measures between the existing ladders and the tower, which makes the ladders easy to slide. Workers are prone to falling accidents due to the side tilt or sliding of the ladders during operation, which poses a serious safety hazard. In addition, the ladders in the prior art have poor fixation and are prone to side tilt and sliding, which leads to low efficiency of ladder mounting.

[0030] In view of this, the embodiment of the present application provides a connecting piece that can slide along the side member, and provides a hook on the connecting piece, so that the hook can also slide along the side member, so that the position of the hook can be adjusted as needed, and thus can adapt to the use requirements in different scenarios. In addition, by movably connecting one end of the hook with the connecting piece, the hook can rotate around the connecting piece, and thus the angle between the hook and the side member can be changed, so that the hook can be placed at the bottom of the ladder before mounting, and can slide to the top of the ladder after the ladder abuts, and after rotating it, it is mounted at the target position, so that the fixity of the ladder is improved, the ladder is prevented from tilting or sliding, and the mounting efficiency of the ladder is improved; at the same time, the center of gravity of the ladder is lowered before mounting, and the movement of the hook is not hindered.

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] Figure 1 Structural schematic diagram of the ladder provided for this application Figure 1 , Figure 2 Structural schematic diagram of the ladder provided for this application Figure 2 , Figure 3 Structural schematic diagram of the ladder provided for this application Figure 3 The following combination Figure 1-3 The structure of the ladder is described in detail.

[0033] like Figure 1-3 As shown, the ladder includes a ladder frame 1 and a plurality of cross bars 2. The ladder frame 1 is composed of two oppositely arranged side members 11, the side members 11 are used to abut against the wall, and the plurality of cross bars 2 are arranged in sequence along the extending direction of the side members 11. Each cross bar 2 is connected to two side members 11 respectively; a connecting member 4 is provided on the side of the side member 11 away from the wall, the connecting member 4 is slidably connected to the side member 11, a hook 6 is provided on the connecting member 4, and one end of the hook 6 is movably connected to the connecting member 4; the hook 6 slides with the connecting member 4 to change the position of the hook 6 on the side member 11, and the hook 6 rotates around the connecting member 4 to change the angle of the hook 6 on the side member 11.

[0034] That is to say, through the above design, the position and angle of the hook 6 can be flexibly adjusted according to actual needs when using the ladder, thereby realizing a variety of different usage scenarios. Through the above design, the hook 6 on the ladder can adapt to different mounting heights, and can adaptably adjust its position on the side member 11 according to different mounting heights. For example, when the ladder needs to be fixed at a certain position, the operator can adjust the position of the hook 6 by sliding the connector 4 so that it is aligned with the fixed point. At the same time, by rotating the hook 6, it can be ensured that the hook 6 can be firmly hung on the fixed point, providing a more stable support, thereby improving the mounting efficiency of the ladder. In addition, this design also facilitates the storage and transportation of the ladder. Since the hook 6 can slide and rotate, the operator can adjust the hook 6 to a position that does not occupy additional space, thereby making the ladder more compact and convenient for storage and carrying. In addition, when the hook 6 is not turned over, the hook 6 is in an outward-turned state on the side member 11, so that the hook 6 can move outside the ladder. In this state, the movement of the hook 6 is not easily restricted by the space under the ladder and the obstruction of the objects under the ladder. In this state, the hook 6 is located on the side of the side member 11 away from the wall, so that the hook 6 can pass over the abutment between the side member 11 and the wall, thereby completing the loading of the ladder. Before loading the ladder, the hook 6 can be located at the bottom of the ladder, thereby lowering the center of gravity of the ladder and avoiding the situation where the center of gravity is unstable due to the large eccentric load moment at the top of the ladder during the loading process.

[0035] Optionally, in order to further enhance the stability and safety of the ladder, the side members 11 and the crossbar 2 can be made of high-strength materials, such as aluminum alloy or steel. At the same time, the connector 4 and the hook 6 can be made of wear-resistant and corrosion-resistant materials, such as stainless steel or high-strength plastic, to extend the service life of the ladder.

[0036] In a possible implementation, the connecting member 4 includes a hinge shaft 3 and a slider 20 , and the hook 6 is movably connected to the slider 20 via the hinge shaft 3 . The hinge shaft 3 is perpendicular to the extension direction of the side member 11 to enable the hook 6 to rotate around the slider 20 .

[0037] That is, the hook 6 can be rotated around the slider 20 through the hinge shaft 3, so as to flexibly adjust the angle of the hook 6 relative to the side member 11. The hinge shaft 3 is perpendicular to the extension direction of the side member 11, so that the rotation of the hook 6 can be limited within a plane, which increases the operational flexibility and stability of the hook 6.

[0038] In the specific implementation process, when the operator needs to adjust the position of the hook 6, the slider 20 can be slid along the extension direction of the side member 11 to position the hook 6 at the desired position. Subsequently, by rotating the hook 6, the hook 6 can form an optimal contact angle with the target fixed point, ensuring that the hook 6 can be firmly hung on the fixed point to provide reliable support. Through the combined design of the slider 20 and the hinge shaft 3, the adjustment process of the hook 6 is smoother and more accurate, reducing the possibility of misoperation, thereby improving the convenience of using the ladder and enhancing the stability of the ladder.

[0039] In a possible implementation, a guide groove 8 is provided on the side member 11 , and the slider 20 is slidably disposed in the guide groove 8 , so that the slider 20 slides on the side member 11 through the guide groove 8 , thereby realizing the sliding of the hook 6 on the side member 11 .

[0040] Figure 5 The schematic diagram of the structure of the slider and hook in the ladder provided in this application is shown below. Figure 5 The structure of the slider 20 will be described in detail.

[0041] In a possible embodiment, a guide groove 8 is opened on the outer wall of the side member 11, and the slider 20 includes a first side wall 201, a second side wall 202 and a bottom plate 203. The first side wall 201 and the second side wall 202 are arranged opposite to each other, and the first side wall 201 and the second side wall 202 are connected through the bottom plate 203, and the outer wall of the bottom plate 203 is provided with a hinge shaft 3; wherein, a fixed clamping plate 204 is provided on the side of the second side wall 202 away from the bottom plate 203, the first side wall 201 is slidably matched with the guide groove 8, the bottom plate 203 and the fixed clamping plate 204 are slidably matched with the outer and inner side walls of the side member 11 respectively, and the second side wall 202 is slidably matched with the upper side wall of the side member 11.

[0042] In this embodiment, the outer wall of the side member 11 refers to the outer surface of the side member 11, which is slidably matched with the bottom plate 203, the inner wall of the side member 11 refers to the inner surface of the side member 11, which is opposite to the outer wall and is slidably matched with the fixed clamping plate 204, and the upper side wall of the side member 11 refers to the left side or right side of the guide groove 8 and is slidably matched with the second side wall 202. The slider 20 is constrained on the side member 11 by the first side wall 201, the second side wall 202, the bottom plate 203 and the fixed clamping plate 204, and can slide along the length extension direction thereof, wherein the guide groove 8 can also play a role in limiting the slider 20 to prevent it from detaching from the side member 11. Moreover, this structure does not affect the slider 20 crossing the abutting position of the side member 11 and the wall, and at the same time, the structure of the side member 11 is simple, which is convenient for extrusion molding; at the same time, due to the change in the cross-sectional structure of the side member 11, the bending resistance is improved.

[0043] In a possible implementation, a base 17 is disposed at one end of the side member 11 , and the base 17 is detachably connected to the side member 11 .

[0044] In a possible implementation manner, the upper end and the lower end of the base 17 are of different lengths, and a serrated anti-slip pad is disposed between the upper end and the lower end of the base 17 .

[0045] Figure 4 for Figure 3 The enlarged structural diagram of A in the middle is shown below. Figure 4 The structure of the ladder is further described.

[0046] In a possible implementation, Figure 4 As shown, a connecting hole 9 is formed on the hook 6 , a latch 7 is passed through the connecting hole 9 , and the latch 7 passes through the hook 6 and contacts the guide groove 8 .

[0047] In a possible implementation, the guide slot 8 is provided with a plurality of locking holes 5, and the spacing between the plurality of locking holes 5 can be evenly arranged, gradually increasing or decreasing along the extension direction of the side member 11; the latch 7 corresponds to the locking hole 5, and when the latch 7 is inserted into the locking hole 5, the hook 6 is locked; when the latch 7 is not inserted into the locking hole 5, the latch 7 can slide in the guide slot 8 along with the hook 6. That is, the latch 7 can be constrained by the guide slot 8.

[0048] That is to say, the hook 6 can be locked on the side member 11 through the latch 7. Before mounting the ladder, the hook 6 can slide on the side member 11. At this time, the hook 6 is in an unturned state, and the latch 7 cannot be adapted to the locking hole 5, so that the latch 7 passing through the hook 6 can slide in the guide groove 8 with the hook 6. When mounting the ladder, the latch 7 is first withdrawn from the guide groove 8, and the hook 6 can be flipped relative to the side member 11, thereby driving the latch 7 to flip. At this time, the latch 7 and the locking hole 5 can cooperate with each other, so that when the latch 7 slides to the nearest locking hole 5, the latch 7 can be inserted into the locking hole 5, thereby fixing the hook 6 on the side member 11. The design of the spacing of the above-mentioned locking holes 5 allows the operator to make fine adjustments when necessary. The position of the hook 6 can be finely adjusted through the locking holes 5 with smaller spacing, so that the hook 6 can form the best contact with the target fixed point, thereby improving the accuracy of mounting.

[0049] In a possible implementation, the latch 7 is an asymmetric structure, specifically, the latch 7 is an arched column structure, one side of the latch 7 is a semicircular cylindrical surface, the other side of the latch 7 is a plane, and the semicircular cylindrical surface is arranged opposite to the plane. The arch can be a semicircle, that is, the cross-sectional shape of the latch 7 can be a semicircle.

[0050] The inner wall of the locking hole 5 corresponding to the latch 7 also has an asymmetric geometric shape, which is adapted to each other, and includes a semicircular cylinder and a plane. The semicircular cylinder occupies a part of the inner wall of the locking hole 5 and forms the arc portion of the locking hole 5. The plane is opposite to the semicircular cylinder, forming a straight line portion of the locking hole 5. When the latch 7 is not flipped, one side of the semicircular cylinder of the latch 7 faces the plane side of the locking hole 5, so that the latch 7 will not be inserted into the locking hole 5 when sliding in the guide groove 8. When the hook 6 flips, the latch 7 also flips therewith, and one side of the semicircular cylinder of the latch 7 faces the semicircular cylinder side of the locking hole 5, so that the latch 7 can be smoothly inserted into the locking hole 5. Through the structural design of the above-mentioned latch 7, different insertion depths can be maintained according to the state of the latch 7. That is, in one working state, the latch 7 is inserted into the guide slot 8 and constrained by the guide slot 8. In this constrained state, the rotation constraint of the hook 6 is realized, so that the hook 6 is kept outward; in another working state, when the hook 6 is turned over, the semicircular cylindrical surface of the latch 7 can face the semicircular cylindrical surface of the locking hole 5, thereby ensuring that the latch 7 can be smoothly inserted into the locking hole 5, thereby realizing the stable locking of the hook 6 and enhancing the stability and safety of the ladder. Of course, in this way, when the latch 7 is not fully aligned with the locking hole 5, when the hook 6 is rotated, the latch 7 can easily capture the guide slot 8 in the circumferential direction and be constrained in the guide slot 8. Then the latch 7 is slid along the guide slot 8 to be inserted into the corresponding locking hole 5. In particular, when the latch 7 is compressed by the compression spring 15, it can be automatically inserted into the locking hole 5. This method can reduce the difficulty of alignment and operation in the entire operation process and can respond to the operation quickly.

[0051] In a possible embodiment, a bracket 12 is provided on the hook 6, and a through hole 14 is provided on the bracket 12, and the through hole 14 corresponds to the connection hole 9 on the hook 6; one end of the latch 7 passes through the through hole 14, and the other end of the latch 7 passes through the connection hole 9 to limit the position of the hook 6. In other words, by providing the bracket 12 on the hook 6 and providing the through hole 14 on the bracket 12, so that the through hole 14 corresponds to the connection hole 9 on the hook 6, the latch 7 can be firmly positioned and the position of the hook 6 can be limited, thereby forming a double fixation. In this way, the position of the hook 6 can be effectively limited to prevent it from accidentally sliding or falling off during use, thereby improving the overall stability and safety of the ladder.

[0052] In a possible implementation, the bolt 7 is provided with a fixing bolt cap 10 and a support leg 13, the fixing bolt cap 10 is provided at one end of the bolt 7 passing through the through hole 14, and the support leg 13 is provided on the side of the bolt 7; the top plate 16 of the bracket 12 is located between the fixing bolt cap 10 and the support leg 13. In other words, the fixing bolt cap 10 can limit the length of the bolt 7 entering the through hole 14. At the same time, the support leg 13 can limit the length of the bolt 7 passing through the through hole 14. Through the design of the fixing bolt cap 10 and the support leg 13, a double limit can be formed, which effectively prevents the bolt 7 from accidentally falling off during use.

[0053] In a possible implementation, specifically, a compression spring 15 is provided between the top plate 16 and the support leg 13, and the compression spring 15 is pressed against the support leg 13 so that the latch 7 has a tendency to extend inwardly into the guide slot 8. In other words, the compression spring 15 always has a tendency to drive the latch 7 to insert into the locking hole 5. And the compression spring 15 can automatically reset the latch 7 to the initial position after the latch 7 is pulled out or adjusted. The above design reduces the number of steps for the user to manually adjust the position of the latch 7, thereby improving the convenience and efficiency of the operation.

[0054] Optionally, the elastic strength of the compression spring 15 can make a certain friction force exist between the latch 7 and the guide slot 8, and the gravity of the latch 7 in the guide slot 8 can be offset by the action of the above friction force, so that the latch 7 can be intermittent during the sliding process, or a certain height can be guaranteed, and both of the above states can be broken under the action of external force. In other words, the latch 7 can be located at a certain position in the guide slot 8, and the compression spring 15 is in a compressed state, so that the latch 7 has a tendency to be inserted into the locking hole 5. Due to the elastic strength of the compression spring 15, friction force is generated between the latch 7 and the guide slot 8, and the above friction force is sufficient to offset the gravity of the latch 7. When there is no external force, the friction force can keep the latch 7 at a certain height in the guide slot 8 and will not slide down due to gravity. When the latch 7 is pushed by hand, the latch 7 can slide in the guide slot 8, but due to the existence of friction, the latch 7 can stay at certain positions intermittently during the sliding process. In the specific implementation process, in the initial state, the hook 6 is in an unturned state, and the semicircular side of the latch 7 faces the flat side of the locking hole 5. At this time, the latch 7 slides in the guide groove 8 and will not be inserted into the locking hole 5. The compression spring 15 is in a natural state, and the fixed bolt cap 10 and the support leg 13 of the latch 7 respectively limit the sliding range of the latch 7 to ensure that the latch 7 will not fall off. At this time, the operator can adjust the position of the hook 6 on the side member 11 by sliding the connecting member 4. Since the semicircular side of the latch 7 does not match the flat side of the locking hole 5, the latch 7 can slide freely in the guide groove 8 with the hook 6 without being stuck in the locking hole 5. When the hook 6 moves to the target position, the user can apply external force to flip the hook 6 around the hinge shaft 3. As the hook 6 flips, the latch 7 also flips, so that the semicircular side of the latch 7 faces the circular side of the locking hole 5. At this time, since the semicircular side of the latch 7 matches the semicircular side of the locking hole 5, and since the compression spring 15 always has the tendency to drive the latch 7 to insert into the locking hole 5, when the latch 7 moves to the nearest locking hole 5, the latch 7 can be smoothly inserted into the locking hole 5 under the push of the compression spring 15. At this time, the fixing bolt cap 10 and the support leg 13 of the latch 7 are respectively located on both sides of the top plate 16 of the bracket 12, forming a double limit to ensure that the latch 7 is firmly held in the locking hole 5. When the position of the hook 6 needs to be adjusted, the operator can pull out the latch 7 to disengage the latch 7 from the locking hole 5. After the latch 7 is pulled out or adjusted, the compression spring 15 can automatically reset the latch 7 to the initial position, ready for the next operation.

[0055] Several usage scenarios of the ladder provided in this application are introduced below.

[0056] The first usage scenario is that the ladder is higher than the corresponding wall. Figure 6 This is a schematic diagram of the ladder provided in this application in the first usage scenario. Figure 6As shown, before mounting the ladder, the hook 6 can be located at a lower position or a higher position of the entire ladder. At this time, the hook 6 is not located at the top of the ladder, thereby preventing the top of the ladder from being too heavy and causing the entire ladder to tilt and slide, so that the ladder can be leaned against the wall end. Then, the operator can push the hook 6 to the top of the wall end and pass over the abutment between the ladder and the wall. The hook 6 is then flipped over by the hinge shaft 3, and the latch 7 is pulled to slide the hook 6 downward until the latch 7 reaches the target locking hole 5, and the latch 7 is released to insert it into the locking hole 5, thereby fixing the hook 6 at the target position and completing the mounting of the ladder. In addition, the hook 6 can also be moved to the top of the ladder by a traction rope. At this time, the hook 6 is in an unflipped state and will not interfere with other components during the ascending process.

[0057] The second usage scenario is that the ladder is lower than or far lower than the corresponding wall. In low-risk usage scenarios such as non-curved walls, you can choose not to use the hook 6. Alternatively, the hook 6 can be in an unflipped state. At this time, the hook 6 can be used as a handrail facing outward.

[0058] The third usage scenario is that there is a pipe rack on the corresponding wall. In the case where there is a pipe rack on the corresponding wall, the hook 6 can be in a flipped state and fixed to the bottom of the ladder, so that the hook 6 can be hooked on the pipe rack, thereby fixing the bottom of the ladder.

[0059] It should be noted that: in this application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0060] In addition, in this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A ladder, characterized in that: The ladder frame (1) comprises a ladder frame (1) and a plurality of cross bars (2), wherein the ladder frame (1) is composed of two side members (11) arranged opposite to each other, the side members (11) being used to abut against a wall surface, the plurality of cross bars (2) being arranged in sequence and spaced apart along the extension direction of the side members (11), and each of the cross bars (2) being connected to two of the side members (11) respectively; A connecting member (4) is provided on the side of the side member (11) away from the wall, the connecting member (4) is slidably connected to the side member (11), a hook (6) is provided on the connecting member (4), and one end of the hook (6) is movably connected to the connecting member (4); The hook (6) slides with the connecting member (4) to change the position of the hook (6) on the side member (11), and the hook (6) rotates around the connecting member (4) to change the angle of the hook (6) on the side member (11).

2. The ladder according to claim 1, characterized in that: The connecting member (4) comprises a hinge shaft (3) and a slider (20), the hook (6) being movably connected to the slider (20) via the hinge shaft (3), and the hinge shaft (3) being perpendicular to the extension direction of the side member (11) so as to enable the hook (6) to rotate around the slider (20).

3. The ladder according to claim 2, characterized in that: The side member (11) is provided with a guide groove (8), and the slider (20) is slidably arranged in the guide groove (8), so that the slider (20) slides on the side member (11) through the guide groove (8), thereby realizing the sliding of the hook (6) on the side member (11).

4. The ladder according to claim 3, characterized in that: A guide groove (8) is provided on the outer side wall of the side member (11); the slider (20) comprises a first side wall (201), a second side wall (202) and a bottom plate (203); the first side wall (201) and the second side wall (202) are arranged opposite to each other; the first side wall (201) and the second side wall (202) are connected via the bottom plate (203); and a hinge shaft (3) is provided on the outer side wall of the bottom plate (203); A fixed clamping plate (204) is provided on a side of the second side wall (202) away from the bottom plate (203); the first side wall (201) is slidably engaged with the guide groove (8); the bottom plate (203) and the fixed clamping plate (204) are slidably engaged with the outer and inner side walls of the side member (11) respectively; and the second side wall (202) is slidably engaged with the upper side wall of the side member (11).

5. The ladder according to claim 4, characterized in that: The hook (6) is provided with a connection hole (9), the connection hole (9) is provided with a latch (7), and the latch (7) passes through the hook (6) and contacts the guide groove (8).

6. The ladder according to claim 5, characterized in that: The guide groove (8) is provided with a plurality of locking holes (5), the latch pin (7) corresponds to the locking hole (5), and when the latch pin (7) is inserted into the locking hole (5), the hook (6) is locked; When the latch pin (7) is not inserted into the locking hole (5), the latch pin (7) can slide in the guide groove (8) along with the hook (6).

7. The ladder according to claim 6, characterized in that: The latch pin (7) is a bow-shaped column structure, one side of the latch pin (7) is a semicircular cylindrical surface, the other side of the latch pin (7) is a plane, and the semicircular cylindrical surface is arranged opposite to the plane.

8. The ladder according to claim 7, characterized in that: The hook (6) is provided with a bracket (12), the bracket (12) is provided with a through hole (14), and the through hole (14) corresponds to the connection hole (9) on the hook (6); One end of the latch pin (7) passes through the through hole (14), and the other end of the latch pin (7) passes through the connecting hole (9), so as to limit the position of the hook (6).

9. The ladder according to claim 8, characterized in that: The latch pin (7) is provided with a fixing bolt cap (10) and a support leg (13), wherein the fixing bolt cap (10) is provided at one end of the latch pin (7) passing through the through hole (14), and the support leg (13) is provided on a side of the latch pin (7); The top plate (16) of the bracket (12) is located between the fixing bolt cap (10) and the support foot (13).

10. The ladder according to claim 9, characterized in that: A compression spring (15) is provided between the top plate (16) and the support foot (13), and the compression spring (15) is pressed against the support foot (13) so that the latch pin (7) has a tendency to extend inwardly into the guide groove (8).

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