Folding ladder stand

Abstract

The utility model belongs to the field of well pool safety equipment, and discloses a folding ladder stand which comprises a step assembly and an adjusting assembly. The step assembly is installed on the inner wall of the well pool and comprises a supporting base and a step, the step can rotate between the unfolding position and the folding position, the supporting base is located below the step, the step is provided with a stopping face, the stopping face abuts against the supporting base in the unfolding position, and the stopping face is separated from the supporting base in the folding position; the adjusting piece is connected to the step, the limiting base is arranged at the position of the well mouth and comprises a first connecting part, and the adjusting piece can be selectively connected to the first connecting part. When a technician needs to enter the well pool, the adjusting piece is separated from the first connecting part and drives the step to rotate to the unfolding position, when goods with large size need to be placed into the well pool, the adjusting piece is connected to the first connecting part so as to drive the step to rotate to the folding position, the occupied space is small, and the adjusting process is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of well pool safety equipment, in particular to a folding ladder. Background Art

[0002] Pit shafts and pools in factories are equipped with fixed ladder structures for personnel to climb up and down. Some pit shafts and pools have small opening areas, and the presence of fixed ladders will hinder the entry and exit of equipment, so foldable ladder structures are often used.

[0003] In the prior art folding ladder structure, the pedals are arranged between two longitudinal beams fixed to the inner wall of the well, but the folding process is complicated and the operation efficiency is low. In addition, due to the presence of the longitudinal beams, too much internal space of the well is occupied, which brings inconvenience to the entry and exit of large-volume goods and equipment. Utility Model Content

[0004] The utility model aims to provide a folding ladder without a longitudinal beam design, which can greatly save the space in the well pool.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

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

[0007] Folding ladder, including:

[0008] A step assembly is installed on the inner wall of the well pool, comprising a support seat and a step, wherein the step can rotate between an extended position and a retracted position relative to the inner wall, the support seat is fixedly arranged below the step, and the step is provided with a stop surface, wherein in the extended position, the stop surface presses against the support seat, and in the retracted position, the stop surface is separated from the support seat;

[0009] The adjustment component includes an adjustment member and a limit seat, wherein the adjustment member is connected to the step, the limit seat is arranged at the wellhead, and the limit seat includes a first connecting portion. The adjustment member can be selectively connected to the first connecting portion to drive the step to rotate to the retracted position.

[0010] Preferably, the step assembly further comprises a transfer member, the transfer member is provided with a transfer cavity extending in a horizontal direction, the transfer cavity is provided with an opening, and the step part is rotatably inserted into the opening.

[0011] Preferably, the step assembly further comprises a fixing plate, wherein the fixing plate is connected to the inner wall, and the adapter and the support seat are both fixedly connected to the fixing plate.

[0012] Preferably, each of the step components comprises two support seats, which are respectively arranged at two ends of the adapter in the horizontal direction.

[0013] Preferably, the support seat comprises:

[0014] A positioning plate, fixedly connected to the inner wall;

[0015] A support plate is connected to the positioning plate, and the support plate can support the steps.

[0016] Preferably, the support seat further comprises a rib plate connected between the positioning plate and the support plate.

[0017] Preferably, the limit seat also includes a bearing rod and a second connecting part, the bearing rod is connected to the wellhead, the first connecting part and the second connecting part are arranged on the bearing rod at intervals in the vertical direction, the first connecting part is located above the second connecting part, and when the adjusting member is connected to the second connecting part, the step is in the expanded position.

[0018] Preferably, the first connecting portion is provided with a first bend and the second connecting portion is provided with a second bend; and / or the adjusting member is provided with a third bend.

[0019] Preferably, the adjustment assembly further comprises a traction rope, one end of which is connected to the adjustment member, and the other end of which is connected to the step.

[0020] Preferably, a plurality of the step assemblies are arranged at intervals along the vertical direction, and the steps corresponding to each of the step assemblies are connected to the adjusting member.

[0021] Beneficial effects of the utility model:

[0022] The step assembly and the adjustment assembly cooperate with each other. When a technician needs to enter the well pool, the adjustment member is separated from the first connecting part, and the steps are driven to rotate to the expanded position, so that the stop surface is pressed against the support seat. The technician can gradually enter the well pool by stepping on the steps. When larger goods need to be placed in the well pool, the adjustment member is connected to the first connecting part to drive the steps to rotate to the retracted position. At this time, the stop surface is separated from the support seat, and there is no longitudinal beam design. The steps will not occupy too much internal space of the well pool in the retracted position, which facilitates the entry and exit of goods, and the adjustment process is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the folding ladder of the utility model when the steps are in the unfolded position;

[0024] Figure 2It is a structural schematic diagram of the folding ladder of the utility model when the steps are in the retracted position;

[0025] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0026] Figure 4 A top view of the ladder steps of the utility model when they are in the unfolded position;

[0027] Figure 5 A right side view of the ladder steps of the utility model when they are in the unfolded position;

[0028] Figure 6 A front view of the ladder steps of the present invention when they are in the stowed position.

[0029] In the figure:

[0030] 100, inner wall;

[0031] 1. Step assembly; 11. Support seat; 111. Positioning plate; 112. Support plate; 113. Rib plate; 12. Step; 121. Cross brace; 122. Connecting ring; 13. Adapter; 14. Fixing plate;

[0032] 2. Adjustment assembly; 21. Adjustment member; 211. Adjustment rod; 212. Third connection part; 213. Towing rope; 22. Limit seat; 221. First connection part; 222. Load-bearing rod; 223. Second connection part. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection 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 the present invention can be understood according to specific circumstances.

[0035] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0037] like Figure 1-Figure 6 As shown, the utility model provides a folding ladder for carrying technicians in and out of a well, and the folding ladder includes a step assembly 1 and an adjustment assembly 2. The step assembly 1 is installed on the inner wall 100 of the well, and includes a support seat 11 and a step 12. The support seat 11 is fixedly connected to the inner wall 100, and the step 12 is rotatably connected to the inner wall 100. The step 12 can rotate between an unfolded position and a retracted position relative to the inner wall 100. The support seat 11 is fixedly arranged below the step 12, and the step 12 is provided with a stop surface. In the unfolded position, the stop surface presses against the support seat 11, and in the retracted position, the stop surface is separated from the support seat 11. The adjustment assembly 2 includes an adjustment member 21 and a limit seat 22. The adjustment member 21 is connected to the step 12, and the limit seat 22 is arranged at the wellhead. The limit seat 22 includes a first connection portion 221, and the adjustment member 21 can be selectively connected to the first connection portion 221 to drive the step 12 to rotate to the retracted position.

[0038] The step assembly 1 and the adjustment assembly 2 cooperate with each other. When a technician needs to enter the well pool, the adjustment member 21 is separated from the first connecting part 221, and the step 12 is driven to rotate to the unfolded position, so that the stop surface is pressed against the support seat 11. The technician can gradually enter the well pool by stepping on the step 12. When a larger volume of goods needs to be placed in the well pool, the adjustment member 21 is connected to the first connecting part 221 to drive the step 12 to rotate to the retracted position. At this time, the stop surface is separated from the support seat 11, and there is no longitudinal beam design. The step 12 will not occupy too much internal space of the well pool in the retracted position, which is convenient for the entry and exit of goods, and the adjustment process is simple and convenient.

[0039] Specifically, a plurality of step assemblies 1 are arranged at intervals in the vertical direction, and the steps 12 corresponding to each step assembly 1 are connected to the adjustment member 21. The above arrangement can adaptively set the number and spacing of the step assemblies 1 according to the depth of the well pool and the function of the well pool.

[0040] In this embodiment, the step 12 is a rectangular frame structure formed by welding or bending round steel bars with a diameter of not less than 20 mm. A cross brace 121 is also provided on the step 12 to enhance the bearing capacity and rigidity of the step 12 .

[0041] In other embodiments, anti-skid structures such as anti-skid plates, anti-skid coatings or anti-skid stripes may be provided on the steps 12 to prevent technicians from falling during the climbing process.

[0042] Specifically, the step assembly 1 further includes an adapter 13, the adapter 13 is provided with an adapter cavity extending in the horizontal direction, the adapter cavity is provided with an opening, and the step 12 is partially rotated and plugged into the opening. With the above arrangement, the step 12 only needs to be rotated and plugged into the opening to form a rotating connection, which is convenient for installation and simple in structure. In this embodiment, the adapter 13 is a sleeve structure, which can be cylindrical or square, and its shape is not limited here.

[0043] In other embodiments, the adapter 13 may also be a structure such as a hinge or a hinge.

[0044] Specifically, the step assembly 1 further includes a fixing plate 14, which is connected to the inner wall 100, and the adapter 13 and the support seat 11 are both fixedly connected to the fixing plate 14. The setting of the fixing plate 14 enables the adapter 13, the support seat 11 and the fixing plate 14 to form a whole, which facilitates the integrated installation of the step assembly 1.

[0045] In this embodiment, when the step 12 is in the retracted position, the step 12 can be abutted against the fixing plate 14 or the inner wall 100. The above-mentioned setting of the fixing plate 14. In other embodiments, the fixing plate 14 may not be provided, and the adapter 13 and the support seat 11 may be directly connected to the inner wall 100 by bolts or integrally cast.

[0046] Optionally, the fixing plate 14 can be cast inside the side wall of the well, and when the steps 12 are in the retracted position, the steps 12 can be close to the inner wall 100, saving the internal space of the well.

[0047] Optionally, the fixing plate 14 can also be screwed or glued to the inner wall 100 after the side wall of the well pool is cast. When the steps 12 are in the retracted position, the steps 12 can be abutted against the fixing plate 14, which is easy to install.

[0048] It is understandable that the shapes of the fixing plate 14 and the steps 12 can be adaptively adjusted according to the shape of the inner wall 100 of the well. When the inner wall 100 is curved, the fixing plate 14 and the steps 12 can also be adjusted to be curved so as to fit completely to the inner wall 100 to reduce the occupancy of the internal space of the well.

[0049] More specifically, each step assembly 1 includes two support seats 11, which are respectively arranged at the two ends of the adapter 13 in the horizontal direction. In the above arrangement, the two support seats 11 are respectively supported at the two ends of the step 12 in the horizontal direction, thereby improving the bearing capacity and stability of the step 12 when bearing loads. In other embodiments, the number of support seats 11 can also be adjusted to one or more than two according to the actual requirements of the bearing capacity.

[0050] Specifically, the support seat 11 includes a positioning plate 111 and a support plate 112. Among them, the positioning plate 111 is fixedly connected to the fixing plate 14 or the inner wall 100; the support plate 112 is connected to the positioning plate 111. With the above arrangement, the positioning plate 111 can increase the contact area between the support seat 11 and the fixing plate 14 or the inner wall 100, and the support plate 112 can transfer the load to the positioning plate 111, so that the support seat 11 is more stably connected to the fixing plate 14 or the inner wall 100 to support the step 12 and the technician standing on the step 12. In this embodiment, the positioning plate 111 and the support plate 112 are two wing plates of an L-shaped angle steel.

[0051] In other embodiments, the positioning plate 111 and the supporting plate 112 may also be formed by bending a whole metal plate, or by welding, screwing or gluing two metal plates.

[0052] More specifically, the support seat 11 further comprises a rib plate 113, which is connected between the positioning plate 111 and the support plate 112. The rib plate 113 is provided to improve the bearing capacity of the support seat 11 and facilitate the load transfer between the positioning plate 111 and the support plate 112.

[0053] Optionally, the limit seat 22 further includes a bearing rod 222 and a second connection portion 223, the bearing rod 222 is connected to the wellhead, the first connection portion 221 and the second connection portion 223 are arranged on the bearing rod 222 at intervals in the vertical direction, the first connection portion 221 is located above the second connection portion 223, and when the adjustment member 21 is connected to the second connection portion 223, the step 12 is in the unfolded position. With the above arrangement, when the adjustment member 21 is connected to the second connection portion 223, the bearing rod 222 can carry the adjustment member 21, so that the adjustment member 21 can act as a handrail, which is convenient for technicians to climb along the folding ladder.

[0054] More specifically, the first connection part 221 is provided with a first bend and the second connection part 223 is provided with a second bend; and / or, the adjusting member 21 is provided with a third bend. In the above arrangement, the first bend and the second bend are both upward bends, and the third bend can be a downward bend. When the first bend and the second bend are provided, the third bend may not be provided, and the third connection part 212 is only a straight rod extending in the horizontal direction, which can press against the first bend or the second bend; accordingly, when the adjusting member 21 is provided with the third bend, the first bend and the second bend may not be provided, and the first connection part 221 and the second connection part 223 are only straight rods extending in the horizontal direction, which can bear the third bend; the first bend, the second bend and the third bend may also be provided at the same time, so that the connection between the adjusting member 21 and the limiting seat 22 is more firm and reliable.

[0055] In this embodiment, the adjusting member 21 includes an adjusting rod 211 and a third connecting portion 212 . The third connecting portion 212 is disposed on the adjusting rod 211 . The third connecting portion 212 can be selectively connected to the first connecting portion 221 or the second connecting portion 223 .

[0056] Optionally, the third bend may be disposed on the third connecting portion 212 .

[0057] In this embodiment, the limit seat 22 is arranged at the wellhead, and the adjustment rod 211 can partially extend out of the wellhead, so that the technician can use the adjustment rod 211 outside the well to switch the step 12 between the deployed position and the retracted position.

[0058] Specifically, the adjusting member 21 further includes a traction rope 213, one end of which is connected to the adjusting rod 211, and the other end is connected to the step 12. The setting of the traction rope 213 can realize flexible connection, ensure the connection strength, reduce the dead weight, and will not occupy too much space inside the well pool.

[0059] More specifically, a connecting ring 122 is further provided on the step 12, one end of the traction rope 213 is passed through the connecting ring 122 and tied to the step 12, and the other end is tied to the adjustment rod 211. The setting of the connecting ring 122 can prevent the end of the traction rope 213 tied to the step 12 from sliding along the step 12, thereby affecting the normal use of the corresponding step 12.

[0060] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A folding ladder, characterized in that: include: A step assembly (1) is installed on the inner wall (100) of a well, comprising a support seat (11) and a step (12), wherein the step (12) can rotate between an extended position and a retracted position relative to the inner wall (100), the support seat (11) is fixedly arranged below the step (12), and the step (12) is provided with a stop surface, wherein in the extended position, the stop surface presses against the support seat (11), and in the retracted position, the stop surface is separated from the support seat (11); The adjusting assembly (2) comprises an adjusting member (21) and a limiting seat (22), wherein the adjusting member (21) is connected to the step (12), the limiting seat (22) is arranged at the wellhead, and the limiting seat (22) comprises a first connecting portion (221), and the adjusting member (21) can be selectively connected to the first connecting portion (221) to drive the step (12) to rotate to the retracted position.

2. The folding ladder according to claim 1, characterized in that: The step assembly (1) further comprises a transfer member (13), wherein the transfer member (13) is provided with a transfer cavity extending in a horizontal direction, wherein the transfer cavity is provided with an opening, and the step (12) is partially rotatably inserted into the opening.

3. The folding ladder according to claim 2, characterized in that: The step assembly (1) further comprises a fixing plate (14), wherein the fixing plate (14) is connected to the inner wall (100), and the adapter (13) and the support seat (11) are both fixedly connected to the fixing plate (14).

4. The folding ladder according to claim 2, characterized in that: Each of the step components (1) comprises two support seats (11) which are respectively arranged at two ends of the adapter (13) in the horizontal direction.

5. The folding ladder according to claim 1, characterized in that: The support base (11) comprises: A positioning plate (111) fixedly connected to the inner wall (100); A support plate (112) is connected to the positioning plate (111), and the support plate (112) is capable of supporting the steps (12).

6. The folding ladder according to claim 5, characterized in that: The support seat (11) further comprises a rib plate (113), wherein the rib plate (113) is connected between the positioning plate (111) and the support plate (112).

7. The folding ladder according to claim 1, characterized in that: The limiting seat (22) also includes a bearing rod (222) and a second connecting portion (223), the bearing rod (222) being connected to the wellhead, the first connecting portion (221) and the second connecting portion (223) being arranged on the bearing rod (222) at intervals in the vertical direction, the first connecting portion (221) being located above the second connecting portion (223), and when the adjusting member (21) is connected to the second connecting portion (223), the step (12) is in the expanded position.

8. The folding ladder according to claim 7, characterized in that: The first connecting portion (221) is provided with a first bend and the second connecting portion (223) is provided with a second bend; and / or the adjusting member (21) is provided with a third bend.

9. The folding ladder according to claim 1, characterized in that: The adjustment assembly (2) further comprises a traction rope (213), one end of the traction rope (213) being connected to the adjustment member (21) and the other end of the traction rope (213) being connected to the step (12).

10. The folding ladder according to any one of claims 1 to 9, characterized in that: A plurality of the step assemblies (1) are arranged at intervals along the vertical direction, and the steps (12) corresponding to each of the step assemblies (1) are connected to the adjusting member (21).

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