Folding ladder and operation machine

Abstract

The utility model relates to the technical field of engineering machinery, and provides a folding ladder and an operation machine.The folding ladder comprises a fixing part, a sliding plate, a folding ladder body and a locking mechanism, and the fixing part is suitable for being installed at a target installation position; the first end of the sliding plate is slidably connected with the fixing part, and the sliding plate is arranged in the horizontal direction. The folding ladder body can be switched between a folding state and an unfolding state, the first end of the folding ladder body is rotationally connected with the second end of the sliding plate, and the folding ladder body is arranged in the horizontal direction relative to the rotating axis of the sliding plate so that the folding ladder body can rotate to the position below the plane where the sliding plate is located; the locking mechanism is suitable for acting with the second end of the folding ladder body so as to limit rotation of the folding ladder body relative to the sliding plate. By means of the arrangement, before the folding ladder body is unfolded, the folding ladder body can slide outwards by a certain distance relative to the fixing part, a certain distance is formed between the folding ladder body and the housing, and therefore the problem that the folding ladder body interferes with the housing is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a folding ladder and an operating machine. Background Art

[0002] With the development of diversified applications of operating machinery, the structure of operating machinery tends to be refined, humanized, and convenient for operation and maintenance. For example, taking a rotary drilling rig as an example, a rotary drilling rig is a large-scale construction machinery that takes soil and forms holes for cast-in-place piles. It is generally quite tall. In order to facilitate operators to get on and off the drilling rig for maintenance or to observe the working conditions, it is necessary to install an escalator on the vehicle body. In order to ensure the passability of the rotary drilling rig and the normal use of the walking platform, the escalator is generally set to be foldable. When the escalator is not needed during transfer and transportation, it needs to be folded and stored.

[0003] In the related art, a cover for protecting the power system is provided on the rotating platform of the rotary drilling rig, and a foldable escalator is arranged above the cover. Since the edge of the cover is provided with curved surfaces and other shapes, the foldable escalator is easy to interfere with the cover after being unfolded, causing the cover to deform or even damage the cover.

[0004] Therefore, how to solve the problem that the folding ladder easily interferes with the cover of the machine body when unfolded becomes an important technical problem to be solved by those skilled in the art. Utility Model Content

[0005] The utility model provides a folding ladder and an operating machine, which are used to solve the defect that the folding ladder is easy to interfere with a cover shell of a machine body when unfolding.

[0006] The utility model provides a folding ladder, comprising:

[0007] A fixing portion, adapted to be installed at a target installation location;

[0008] A sliding plate, a first end of which is slidably connected to the fixing portion, and the sliding plate is arranged in a horizontal direction relative to the fixing portion;

[0009] A folding ladder body, which can be switched between a folded state and an unfolded state, wherein a first end of the folding ladder body is rotatably connected to a second end of the sliding plate, and the folding ladder body is arranged in a horizontal direction relative to a rotation axis of the sliding plate so that the folding ladder body can be rotated below a plane where the sliding plate is located;

[0010] The locking mechanism is adapted to act with the second end of the folding ladder body to limit the rotation of the folding ladder body relative to the sliding plate.

[0011] According to a folding ladder provided by the utility model, the fixing part has a bottom plate and a pair of side plates distributed at intervals, and the side plates are provided with sliding grooves;

[0012] The sliding plate is arranged above the bottom plate, and the sliding plate is arranged between a pair of side plates. A connecting shaft is arranged at the first end of the sliding plate, and the axis of the connecting shaft is arranged in a horizontal direction and is perpendicular to the extension direction of the slide groove. The end of the connecting shaft is located in the slide groove, and the connecting shaft can slide along the slide groove.

[0013] According to a folding ladder provided by the utility model, a first limit block is arranged on the sliding plate, the first limit block is slidably connected to the sliding plate, the first limit block is arranged at an acute angle relative to the sliding direction of the sliding plate and the plane where the sliding plate is located, and the first limit block is suitable for abutting against the bottom plate when the sliding plate slides to the working position;

[0014] The connecting shaft is rotatable about its own axis relative to at least one of the fixing portion and the sliding plate.

[0015] According to a folding ladder provided by the utility model, the fixing part comprises:

[0016] A box body, one end of which has an opening, and the sliding plate and the folding ladder body in the folded state can enter and exit the box body;

[0017] A cover plate is arranged at the opening, the cover plate is movably connected to the box body, and the cover plate can open or close the opening.

[0018] According to a folding ladder provided by the utility model, the cover plate is rotatably connected to the box body, and at least one of the box body and the cover plate is provided with a magnetic attraction member, and the magnetic attraction member is suitable for adsorbing and fixing the cover plate when the cover plate is opened.

[0019] According to a folding ladder provided by the utility model, the folding ladder body comprises:

[0020] a first ladder portion, a first end of which is rotatably connected to the sliding plate;

[0021] a second ladder portion, a first end of which is rotatably connected to the second end of the first ladder portion, wherein a rotation axis of the second ladder portion relative to the first ladder portion is parallel to a rotation axis of the first ladder portion relative to the sliding plate;

[0022] a fastener, adapted to fixedly connect the second end of the first ladder portion to the first end of the second ladder portion;

[0023] The locking mechanism is adapted to act on the second end of the second step portion to limit the rotation of the second step portion.

[0024] According to a folding ladder provided by the utility model, the first ladder portion can rotate between a first position and a second position. In the first position, the plane where the first ladder portion is located is parallel to the plane where the sliding plate is located. In the second position, the plane where the first ladder portion is located is arranged at an angle to the plane where the sliding plate is located.

[0025] A second limit block is disposed at the first end of the first ladder portion. When the first ladder portion rotates to the second position, the second limit block abuts against the lower surface of the sliding plate to limit the rotation of the first ladder portion.

[0026] According to a folding ladder provided by the utility model, the locking mechanism comprises:

[0027] A fixing member, disposed at the second end of the second ladder portion, the fixing member being rotatably connected to the second ladder portion;

[0028] The lock body is suitable for being arranged below the target installation position, and the lock body is detachably connected to the fixing member.

[0029] According to the folding ladder provided by the utility model, at least one of the upper surface of the fixing portion and the upper surface of the sliding plate is provided with an anti-slip structure.

[0030] The utility model also provides a working machine, comprising the above-mentioned folding ladder.

[0031] The folding ladder provided by the utility model includes a fixed part, a sliding plate, a folding ladder body and a locking mechanism. The fixed part is used to be installed at a target installation position. The first end of the sliding plate is slidably connected to the fixed part. The sliding direction of the sliding plate relative to the fixed part is arranged in a horizontal direction. By sliding the sliding plate relative to the fixed part, the folding ladder body can be moved closer to or away from the fixed part. The folding ladder body can be switched between a folded state and an unfolded state. The first end of the folding ladder body is rotatably connected to the second end of the sliding plate. The folding ladder body is arranged in a horizontal direction relative to the rotation axis of the sliding plate, so that the folding ladder body can be rotated to below the plane where the sliding plate is located. After the folding ladder body is rotated to below the plane where the sliding plate is located, the folding ladder body can be switched to the unfolded state for use by an operator. The locking mechanism is used to act with the second end of the folding ladder body to limit the rotation of the folding ladder body relative to the sliding plate, thereby ensuring the stable position of the folding ladder body. In this way, when the folding ladder provided by the utility model is set on a rotary drilling rig, before the folding ladder body is unfolded, the sliding plate can be slid outward by a certain distance, so that there is a certain distance between the first end of the folding ladder body and the operating machine, and there is also a certain distance between the entire folding ladder body and the side of the cover, thereby effectively avoiding the problem of interference between the folding ladder body and the cover when unfolded. Furthermore, the sliding plate can be slid out for use by the operator, effectively utilizing the distance between the fixed part and the folding ladder body, making it more convenient for the operator to work.

[0032] Furthermore, in the working machine provided by the present invention, since it is provided with the folding ladder as described above, it also has the various advantages as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 This is a schematic diagram of the structure of the folding ladder provided by the utility model when it is arranged on the cover Figure 1 (The folding ladder body is stored inside the box);

[0035] Figure 2 yes Figure 1 Enlarged view of the middle X;

[0036] Figure 3 This is a schematic diagram of the structure of the folding ladder provided by the utility model when it is arranged on the cover Figure 2 (The folding ladder body is in the unfolded state);

[0037] Figure 4 yes Figure 3 Enlarged view of Y in the middle;

[0038] Figure 5 This is a schematic diagram of the structure of the folding ladder provided by the utility model when it is in the unfolded state. Figure 1 (The fixing is not connected to the lock body);

[0039] Figure 6 This is a schematic diagram of the structure of the folding ladder provided by the utility model when it is in the unfolded state. Figure 2 (The fixing piece is connected to the lock body);

[0040] Figure 7 It is a structural schematic diagram of the folding ladder provided by the utility model in the case where part of the structure of the box body is hidden;

[0041] Figure 8 It is a structural schematic diagram of the folding ladder provided by the utility model when the folding ladder body is located outside the box body, the folding ladder body is in a folded state, and the plane where the first ladder part is located is arranged at an angle with the plane where the sliding plate is located;

[0042] Fig. 9 It is a structural schematic diagram of the folding ladder provided by the utility model when the folding ladder body is located outside the box body, the folding ladder body is in a folded state, and the plane where the first ladder part is located is parallel to the plane where the sliding plate is located;

[0043] Fig.10 It is a structural schematic diagram of the first ladder part provided by the utility model;

[0044] Fig.11 It is a structural schematic diagram of the second limit block provided by the utility model and the sliding plate acting on each other;

[0045] Fig.12 It is a structural schematic diagram of the fixing part provided by the utility model.

[0046] Reference numerals:

[0047] 1. Sliding plate; 2. Locking mechanism; 3. Bottom plate; 4. Side plate; 5. Slide groove; 6. Connecting shaft; 7. First limit block; 8. Box body; 9. Cover plate; 10. Magnetic element; 11. First ladder section; 12. Second ladder section; 13. Fastener; 14. Second limit block; 15. Fixing element; 16. Lock body; 17. Lock; 18. Cover shell; 19. Upper box body; 20. Lower box body. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0049] Combine the following Figures 1 to 12 The present invention describes a folding ladder.

[0050] like Figures 1 to 12 As shown, the folding ladder provided by the embodiment of the utility model includes a fixing portion, a sliding plate 1 , a folding ladder body and a locking mechanism 2 .

[0051] Specifically, the fixing part is used to be installed at a target installation position. For a rotary drilling rig, the fixing part can be fixedly installed above the cover 18 of the upper vehicle part thereof.

[0052] The sliding plate 1 is arranged in a horizontal direction relative to the fixed part, the first end of the sliding plate 1 is slidably connected to the fixed part, and the sliding direction of the sliding plate 1 relative to the fixed part is arranged in a horizontal direction. By sliding the sliding plate 1 relative to the fixed part, the folding ladder body can be moved closer to or away from the fixed part.

[0053] The folding ladder body can be switched between a folded state and an unfolded state. When the folding ladder body is switched to the folded state, it is convenient to store, which can reduce the space occupied, avoid affecting the passability of the rotary drilling rig, and ensure the normal use of the walking platform device of the rotary drilling rig. When the folding ladder body is switched to the unfolded state, it can be used for operators to climb.

[0054] The first end of the folding ladder body is rotatably connected to the second end of the sliding plate 1 , and the folding ladder body is arranged in a horizontal direction relative to the rotation axis of the sliding plate 1 , so that the folding ladder body can be rotated below the plane where the sliding plate 1 is located.

[0055] After the folding ladder body is rotated to below the plane where the sliding plate 1 is located, the folding ladder body can be switched to an unfolded state for use by operators.

[0056] The locking mechanism 2 is used to act with the second end of the folding ladder body to limit the rotation of the folding ladder body relative to the sliding plate 1, thereby ensuring the stability of the position of the folding ladder body and the climbing safety of the operators.

[0057] In this way, when the folding ladder provided by the embodiment of the utility model is set on a rotary drilling rig, the fixing part is fixedly set above the cover 18 located on the upper part, and the fixing part is adjacent to the edge position of the cover 18. Before unfolding the folding ladder body, the sliding plate 1 can be slid outward for a certain distance, so that there is a certain distance between the first end of the folding ladder body and the operating machine, and there is also a certain distance between the entire folding ladder body and the side of the cover 18, thereby effectively avoiding the problem of interference between the folding ladder body and the cover 18 when unfolding.

[0058] Furthermore, the sliding plate 1 can be slid out for use by operators, effectively utilizing the distance between the fixed portion and the folding ladder body, making it more convenient for operators to work.

[0059] In addition, when the folding ladder needs to be folded and stored, the folding ladder body is first switched to the folded state, and then the sliding plate 1 is slid inward a certain distance so that the folding ladder body in the folded state is located above the cover shell 18. This can reduce or avoid occupying the space on the side of the cover shell 18, avoid affecting the passability of the rotary drilling rig, and ensure the normal use of the walkway device of the rotary drilling rig.

[0060] In the embodiment of the utility model, the fixing part has a bottom plate 3 and a pair of side plates 4, the pair of side plates 4 are arranged oppositely and spaced apart. Slide grooves 5 are arranged on the side plates 4, and the extension directions of the slide grooves 5 on the pair of side plates 4 are parallel and arranged in the horizontal direction.

[0061] The sliding plate 1 is located above the bottom plate 3 and between a pair of side plates 4. The end of the sliding plate 1 away from the folding ladder body is the first end of the sliding plate 1. A connecting shaft 6 is provided at the first end of the sliding plate 1. The axis of the connecting shaft 6 is arranged in the horizontal direction and is perpendicular to the extension direction of the slide groove 5. The end of the connecting shaft 6 is located in the slide groove 5, and the connecting shaft 6 can slide along the slide groove 5, thereby realizing the sliding connection between the sliding plate 1 and the fixed part.

[0062] In some embodiments, only one connecting shaft 6 may be provided, and both ends of the connecting shaft 6 extend to both sides of the sliding plate 1 , respectively, so that both ends of the connecting shaft 6 are respectively located in a pair of sliding grooves 5 .

[0063] In some other embodiments, two connecting shafts 6 are provided, and the two connecting shafts 6 are respectively provided on the first side of the sliding plate 1 close to the side plate 4 , and the end of each connecting shaft 6 is correspondingly located in a sliding groove 5 .

[0064] The sliding plate 1 is slidably connected to the fixed part through the connecting shaft 6, and has a simple structure. Moreover, through the interaction between the sliding plate 1 and the bottom plate 3 and the interaction between the connecting shaft 6 and the slide groove 5, the sliding plate 1 can be restricted from rotating downward relative to the fixed part, ensuring that the sliding plate 1 slides smoothly.

[0065] In this embodiment, a first limit block 7 is provided on the sliding plate 1 , the first limit block 7 is slidably connected to the sliding plate 1 , and the first limit block 7 is provided at an acute angle relative to the sliding direction of the sliding plate 1 and the plane where the sliding plate 1 is located.

[0066] For the convenience of explanation, it is now stipulated that when the sliding plate 1 slides outward relative to the fixed part to the position where the folding ladder body is farthest from the fixed part, the position of the sliding plate 1 is regarded as the working position of the sliding plate 1; when the sliding plate 1 slides inward relative to the fixed part to the position where the folding ladder body is closest to the fixed part, the position of the sliding plate 1 is regarded as the storage position of the sliding plate 1.

[0067] The first limit block 7 is disposed adjacent to the first end of the sliding plate 1. When the first limit block 7 slides to the working position, the first limit block 7 is located exactly at the end of the bottom plate 3 close to the side of the folding ladder body.

[0068] When the sliding plate 1 slides from the storage position to the working position, the first limit block 7 and the sliding plate 1 are both located above the bottom plate 3 of the fixed portion, and the plane where the sliding plate 1 is located is arranged in the horizontal direction. When the sliding plate 1 slides to the working position, the first limit block 7 is no longer supported by the bottom plate 3. Under the action of its own gravity, the first limit block 7 slides downward relative to the sliding plate 1 until the first limit block 7 slides to the lowest position. When the sliding plate 1 is in the working position and the first limit block 7 slides to the lowest position, the first limit block 7 abuts against the bottom plate 3. Through the interaction between the first limit block 7 and the bottom plate 3, the sliding plate 1 can be restricted from sliding to the storage position, thereby ensuring the stability of the sliding plate 1 in the working position and improving the safety of the folding ladder.

[0069] The connecting shaft 6 can rotate around its own axis relative to at least one of the fixed part and the sliding plate 1. Specifically, the connecting shaft 6 can be fixedly connected to the sliding part, and at the same time, the connecting shaft 6 can rotate in the sliding groove 5; or, the connecting shaft 6 can be rotationally connected to the sliding plate 1, and there is no limitation on the rotational coordination between the connecting shaft 6 and the sliding groove 5.

[0070] When it is necessary to slide the sliding plate 1 from the working position to the storage position, an upward force can be applied to the second end of the sliding plate 1, so that the sliding plate 1 rotates upward relative to the fixed part around the connecting shaft 6, and the first limit block 7 moves synchronously with the sliding plate 1 until the height of the lower end of the first limit block 7 is greater than the height of the upper surface of the bottom plate 3. At this time, a force is applied to the sliding plate 1 to slide the sliding plate 1 to the storage position. After the sliding plate 1 slides a certain distance to the storage position, the sliding plate 1 is rotated downward relative to the fixed part around the connecting shaft 6 until the first limit block 7 and the sliding plate 1 are placed on the bottom plate 3 of the fixed part, and then the sliding plate 1 is pushed to the storage position.

[0071] In the embodiment of the utility model, the fixing part includes a box body 8 and a cover plate 9 .

[0072] The box body 8 has a receiving cavity inside and an opening at one end. When the box body 8 is fixed to the target installation position, the opening direction of the box body 8 is set in the horizontal direction. The sliding plate 1 and the folding ladder body in the folded state can enter and exit the box body 8 through the opening.

[0073] The cover plate 9 is arranged at the opening, and the cover plate 9 is movably connected to the box body 8, so that the cover plate 9 can selectively open or close the opening. When the folding ladder body in the folded state is located in the box body 8, the cover plate 9 is used to close the opening of the box body 8, and the cover plate 9 can prevent the folding ladder body from sliding outward during transportation.

[0074] In this embodiment, the cover plate 9 is rotatably connected to the box body 8. Specifically, the cover plate 9 and the box body 8 can be connected via a hinge.

[0075] The cover plate 9 can be arranged in a vertical direction or in a horizontal direction relative to the rotation axis of the box body 8, which is not limited here.

[0076] If a handrail is provided above the box body 8, the cover plate 9 can be arranged in a vertical direction relative to the rotation axis of the box body 8. If no handrail or other parts are provided above the box body 8, the direction of the cover plate 9 relative to the rotation axis of the box body 8 is not limited, as long as the cover plate 9 can smoothly open or close the opening.

[0077] A lock 17 is provided on the box body 8 or the cover plate 9. When the cover plate 9 is rotated to a position where the opening is closed, the lock 17 can be used to connect the cover plate 9 and the box body 8 together to prevent the cover plate 9 from being opened due to accidental force.

[0078] It should be noted that the lock 17 for connecting the box body 8 and the cover plate 9 is a mature prior art for those skilled in the art, so the structure of the lock 17 is not specifically limited here.

[0079] In the present embodiment, a magnetic component 10 is provided on at least one of the box body 8 and the cover plate 9. The magnetic component 10 can be provided only on the outer surface of the box body 8, and the cover plate 9 can be provided with a material that can be adsorbed by the magnetic component 10. The magnetic component 10 can also be provided only on the outer surface of the cover plate 9, and the box body 8 can be provided with a material that can be adsorbed by the magnetic component 10. The magnetic component 10 can also be provided on both the outer surface of the box body 8 and the outer surface of the cover plate 9.

[0080] When the box body 8 is opened, the box body 8 and the cover plate 9 have a magnetic attraction, and the cover plate 9 can be rotated to contact the magnetic attraction member 10, so that the magnetic attraction member 10 can adsorb and fix the cover plate 9. Through the interaction between the cover plate 9 and the magnetic attraction member 10, the position of the cover plate 9 is stabilized.

[0081] Specifically, the magnetic attraction member 10 may be, but is not limited to, a permanent magnet, and the cover plate 9 may be made of a material that can be attracted by the permanent magnet, for example, the cover plate 9 may be made of an iron member.

[0082] like Fig.12 As shown, the box body 8 includes an upper box body 19 and a lower box body 20, the slide groove 5 is arranged on the lower box body 20, the sliding plate 1 is slidably connected to the lower box body 20, the upper box body 19 and the lower box body 20 are buckled together, and the cover plate 9 is connected to the upper box body 19.

[0083] In the embodiment of the utility model, the folding ladder body includes a first ladder portion 11 , a second ladder portion 12 and a fastener 13 .

[0084] The first step 11 and the second step 12 each have at least one pedal. Figure 5 .

[0085] The first end of the first step portion 11 is rotatably connected to the second end of the sliding plate 1, and the first end of the second step portion 12 is rotatably connected to the second end of the first step portion 11. The rotation axis of the second step portion 12 relative to the first step portion 11 is parallel to the rotation axis of the first step portion 11 relative to the sliding plate 1, and both are in the horizontal direction and perpendicular to the opening direction of the box body 8.

[0086] When the second step portion 12 rotates relative to the first step portion 11 Figure 8 and Fig. 9 When the second ladder section 12 is rotated relative to the first ladder section 11 to Figures 5 to 7 When the folding ladder is in the position shown, it is considered that the folding ladder body is in the unfolded state.

[0087] The fastener 13 can selectively fix the second end of the first ladder portion 11 with the first end of the second ladder portion 12, and the locking mechanism 2 is used to interact with the second end of the second ladder portion 12 to limit the rotation of the second ladder portion 12. Specifically, the fastener 13 is used to fix the second end of the first ladder portion 11 with the first end of the second ladder portion 12 when the folding ladder body is in the unfolded state, so as to ensure that the relative position of the first ladder portion 11 and the second ladder portion 12 is stable.

[0088] In a specific embodiment, the first end of the first ladder portion 11 and the second end of the sliding plate 1 can be hinged together by a pin, and the first end of the second ladder portion 12 and the second end of the first ladder portion 11 can be hinged together. A connecting hole is provided at the first end of the second ladder portion 12 and the second end of the first ladder portion 11. When the folding ladder body is in the unfolded state, the connecting hole at the second end of the first ladder portion 11 is directly opposite to the connecting hole at the first end of the second ladder portion 12. The fastener 13 can be a pin or a bolt, and the fastener 13 can be inserted into the connecting hole of the first ladder portion 11 and the second ladder portion 12.

[0089] In this embodiment, the first ladder portion 11 can rotate between a first position and a second position. In the first position, the plane where the first ladder portion 11 is located is parallel to the plane where the sliding plate 1 is located, and it can enter and exit the box body 8 along the opening direction of the box body 8. In the second position, the plane where the first ladder portion 11 is located is set at an angle to the plane where the sliding plate 1 is located. At this time, the first ladder portion 11 is set at an angle relative to the ground, which can facilitate operators to climb.

[0090] A second limit block 14 is provided at the first end of the first step portion 11. When the first step portion 11 rotates to the second position, the second limit block 14 abuts against the lower surface of the sliding plate 1. By utilizing the interaction between the second limit block 14 and the lower surface of the sliding plate 1, the first step portion 11 can be limited from rotating in a direction away from the first position. That is to say, the provision of the second limit block 14 can limit the maximum rotation angle of the first step portion 11 relative to the sliding plate 1.

[0091] In the embodiment of the utility model, when the folding ladder body is in the unfolded state, the locking mechanism 2 is used to limit the rotation of the folding ladder body, and when the second end of the folding ladder body is at a certain height from the ground, the stability of the folding ladder can still be ensured.

[0092] In this embodiment, the locking mechanism 2 includes a fixing member 15 and a lock body 16 .

[0093] The fixing member 15 is disposed at the second end of the second step portion 12, the fixing member 15 is rotatably connected to the second step portion 12, and the rotation axis of the fixing member 15 relative to the second step portion 12 is parallel to the plane where the second step portion 12 is located. The fixing member 15 can be rotated to a position at an angle to the plane where the second step portion 12 is located, and can also be rotated to a position in contact with the plane where the second step portion 12 is located.

[0094] The lock body 16 is used to be disposed below the target installation position, and specifically, can be disposed at the lower end of the side surface of the cover shell 18 .

[0095] The lock body 16 can be detachably connected to the fixing member 15. When the lock body 16 is connected to the fixing member 15, the lock body 16 can limit the displacement of the fixing member 15, thereby limiting the rotation of the folding ladder body relative to the sliding plate 1; when the lock body 16 is disconnected from the fixing member 15, the fixing member 15 can rotate with the folding ladder body relative to the sliding plate 1.

[0096] Specifically, the fixing member 15 can be configured as a rod-shaped structure, referred to as a fixing rod. The lock body 16 includes a fixing seat and a locking tongue. The fixing seat is used to be fixedly installed at the target installation position. A U-shaped groove is provided on the fixing seat, and the fixing rod can enter the U-shaped groove. The locking tongue is rotatably connected to the fixing seat. When the locking tongue rotates relative to the fixing seat, the locking tongue can move closer to or away from the U-shaped groove. A damping element is provided between the locking tongue and the fixing seat so that the locking tongue can be stabilized in a corresponding position without being subjected to external force.

[0097] After the fixing rod is placed in the U-shaped groove, force is applied to the lock tongue to rotate the lock tongue until the lock tongue closes the open end of the U-shaped groove, and the lock tongue can limit the fixing rod from coming out of the U-shaped groove, thereby limiting the displacement of the fixing rod. When the folding ladder body needs to be rotated relative to the sliding plate 1, force is applied to the lock tongue to rotate the lock tongue in the opposite direction until the lock tongue is away from the opening of the U-shaped groove, thereby allowing the fixing rod to move out of the U-shaped groove.

[0098] In the embodiment of the utility model, at least one of the upper surface of the fixing portion and the upper surface of the sliding plate 1 is provided with an anti-slip structure. Specifically, the anti-slip structure can be provided in the form of an anti-slip protrusion.

[0099] In a specific embodiment, anti-slip protrusions are provided on the upper surface of the fixing portion and the upper surface of the sliding plate 1 .

[0100] In summary, the folding ladder provided by the embodiment of the utility model does not need to be disassembled in the scene of the transfer and transportation of the rotary drilling rig, and does not occupy the width of the rotary drilling rig after being stored, which improves the transportability and customer satisfaction. In addition, the fixing part is only fixedly connected to one part, which releases the internal stress of the assembly and improves the reliability and convenience of the product. The setting of the sliding plate 1 can make the folding ladder body span a distance, avoid interference with the modeling curved surface on the cover shell 18, and allow the modeling surface of the cover shell 18 to have more appearance options. At the same time, the sliding plate 1 is provided with anti-slip protrusions for people to step on.

[0101] On the other hand, the embodiment of the utility model further provides a working machine, including the folding ladder provided in any of the above embodiments. It has all the advantages of the above folding ladder, which will not be repeated here. The derivation process of the beneficial effects of the working machine in the embodiment of the utility model is generally similar to the derivation process of the beneficial effects of the above folding ladder, so it will not be repeated here.

[0102] In the embodiment of the present utility model, the type of the working machine is not limited, for example, the working machine can be a rotary drilling rig, an excavator, a crane, etc. In other words, as long as the working machine can use the folding ladder in the embodiment of the present utility model.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A folding ladder, characterized in that: include: A fixing portion, adapted to be installed at a target installation location; A sliding plate, a first end of which is slidably connected to the fixing portion, and the sliding plate is arranged in a horizontal direction relative to the fixing portion; A folding ladder body, which can be switched between a folded state and an unfolded state, wherein a first end of the folding ladder body is rotatably connected to a second end of the sliding plate, and the folding ladder body is arranged in a horizontal direction relative to a rotation axis of the sliding plate so that the folding ladder body can be rotated below a plane where the sliding plate is located; The locking mechanism is adapted to act with the second end of the folding ladder body to limit the rotation of the folding ladder body relative to the sliding plate.

2. The folding ladder according to claim 1, characterized in that: The fixing part comprises a bottom plate and a pair of side plates which are spaced apart from each other, and the side plates are provided with sliding grooves; The sliding plate is arranged above the bottom plate, and the sliding plate is arranged between a pair of side plates. A connecting shaft is arranged at the first end of the sliding plate, and the axis of the connecting shaft is arranged in a horizontal direction and is perpendicular to the extension direction of the slide groove. The end of the connecting shaft is located in the slide groove, and the connecting shaft can slide along the slide groove.

3. The folding ladder according to claim 2, characterized in that: The sliding plate is provided with a first limit block, the first limit block is slidably connected to the sliding plate, the first limit block is arranged at an acute angle relative to the sliding direction of the sliding plate and the plane where the sliding plate is located, and the first limit block is suitable for abutting against the bottom plate when the sliding plate slides to the working position; The connecting shaft is rotatable about its own axis relative to at least one of the fixing portion and the sliding plate.

4. The folding ladder according to claim 1, characterized in that: The fixing portion comprises: A box body, one end of which has an opening, and the sliding plate and the folding ladder body in the folded state can enter and exit the box body; A cover plate is arranged at the opening, the cover plate is movably connected to the box body, and the cover plate can open or close the opening.

5. The folding ladder according to claim 4, characterized in that: The cover plate is rotatably connected to the box body, and at least one of the box body and the cover plate is provided with a magnetic attraction member, and the magnetic attraction member is suitable for adsorbing and fixing the cover plate when the cover plate is opened.

6. The folding ladder according to claim 1, characterized in that: The folding ladder body comprises: a first ladder portion, a first end of which is rotatably connected to the sliding plate; a second ladder portion, a first end of which is rotatably connected to the second end of the first ladder portion, wherein a rotation axis of the second ladder portion relative to the first ladder portion is parallel to a rotation axis of the first ladder portion relative to the sliding plate; a fastener, adapted to fixedly connect the second end of the first ladder portion to the first end of the second ladder portion; The locking mechanism is adapted to act on the second end of the second step portion to limit the rotation of the second step portion.

7. The folding ladder according to claim 6, characterized in that: The first step portion can rotate between a first position and a second position. In the first position, the plane where the first step portion is located is parallel to the plane where the sliding plate is located. In the second position, the plane where the first step portion is located is arranged at an angle to the plane where the sliding plate is located. A second limit block is disposed at the first end of the first ladder portion. When the first ladder portion rotates to the second position, the second limit block abuts against the lower surface of the sliding plate to limit the rotation of the first ladder portion.

8. The folding ladder according to claim 6, characterized in that: The locking mechanism comprises: A fixing member, disposed at the second end of the second ladder portion, the fixing member being rotatably connected to the second ladder portion; The lock body is suitable for being arranged below the target installation position, and the lock body is detachably connected to the fixing member.

9. The folding ladder according to claim 1, characterized in that: At least one of an upper surface of the fixing portion and an upper surface of the sliding plate is provided with an anti-slip structure.

10. A working machine, characterized in that: It comprises a folding ladder as claimed in any one of claims 1 to 9.

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